1. A construction method for quickly tamping a foundation by hydraulic pressure is characterized by comprising the following steps:

s1, measuring and setting line, calibrating by using a level meter, setting a tamping point and tamping parameters, and positioning hydraulic equipment, wherein the tamping parameters comprise the weight of a hydraulic hammer, the bottom surface diameter R0 of the hydraulic hammer and the drop distance L;

step S2, tamping, aligning the hydraulic hammer to a tamping point for tamping according to a set tamping point, comparing the actual feedback pressure F of the hydraulic hammer with a preset feedback pressure to determine whether the diameter of the bottom surface of the hydraulic hammer needs to be adjusted or not by the control unit in the tamping process, comparing the feedback pressure difference value delta F with a standard feedback pressure difference value to determine the diameter adjusting quantity of the bottom surface of the hydraulic hammer, controlling the starting of a plurality of motors according to the diameter adjusting quantity of the bottom surface of the hydraulic hammer, and controlling the running time of the plurality of motors according to the hardness of the ground bottom surface to adjust tamping parameters;

step S3, leveling, namely leveling the rammed pit by a bulldozer;

step S4, full tamping, namely loosening the soil and tamping the surface layer of the field by using a hydraulic hammer;

in step S2, when the control unit controls the plurality of motors according to the adjustment Rz of the bottom surface diameter of the hydraulic hammer, N motors are provided, where N is greater than or equal to 3,

if Rz is R1, the control unit controls K motors to be started simultaneously, so that the motors control the screw rod nut mechanism to enable the pushing plate to push the air pressure tank to enable air pressure to enter the hydraulic support rod, the hydraulic support rod enters the hydraulic hammer after passing through the variable point dropping device to inflate the hydraulic hammer to adjust the diameter of the bottom surface of the hydraulic hammer, and K is INT ([ (1/5). times.N ]);

if Rz is R2, the control unit controls K motors to be started simultaneously, so that the motors control the screw rod nut mechanism to enable the pushing plate to push the air pressure tank to enable air pressure to enter the hydraulic support rod, the hydraulic support rod enters the hydraulic hammer after passing through the variable point dropping device to inflate the hydraulic hammer to adjust the diameter of the bottom surface of the hydraulic hammer, and K is INT ([ (1/4). times.N ]);

if Rz is R3, the control unit controls K motors to be started simultaneously, so that the motors control the screw rod nut mechanism to enable the pushing plate to push the air pressure tank to enable air pressure to enter the hydraulic support rod, the hydraulic support rod enters the hydraulic hammer after passing through the variable point dropping device to inflate the hydraulic hammer to adjust the diameter of the bottom surface of the hydraulic hammer, and K is INT ([ (1/3). times.N ]);

if Rz is R4, the control unit controls K motors to be started simultaneously, so that the motors control the screw rod nut mechanism to enable the pushing plate to push the air pressure tank to enable air pressure to enter the hydraulic support rod, the hydraulic support rod enters the hydraulic hammer after passing through the variable point dropping device to inflate the hydraulic hammer to adjust the diameter of the bottom surface of the hydraulic hammer, and K is INT ([ (1/2). times.N ]);

wherein Ri represents the ith standard adjustment quantity of the diameter, and i is set to be 1,2,3 and 4.

2. The method for quickly compacting a ground using hydraulic pressure according to claim 1, wherein in step S2, when the control unit controls the plurality of motors according to the adjustment amount Rz of the bottom surface diameter of the hydraulic hammer, the hardness of the ground base surface is measured by the hardness measuring instrument, the control unit sets the measured hardness of the ground base surface to D and controls the operation time of the plurality of motors according to the hardness D of the ground base surface;

the control unit is provided with preset ground base surface hardness and motor running time and comprises a first preset ground base surface hardness D1, a second preset ground base surface hardness D2, a third preset ground base surface hardness D3 and a fourth preset ground base surface hardness D4, wherein D1 is more than D2 and more than D3 and more than D4;

the motor running times comprise a first motor running time T1, a second motor running time T2, a third motor running time T3 and a fourth motor running time T4, and the running times are different from each other;

when Rz is R1, judging whether the ground base surface hardness D is larger than a first preset ground base surface hardness D1, if D is larger than D1, starting K motors by the control unit, and stopping after T1 time;

when Rz is R2, judging whether the ground base surface hardness D is larger than a second preset ground base surface hardness D2, if D is larger than D2, starting K motors by the control unit, and stopping after T2 time;

when Rz is R3, judging whether the ground base surface hardness D is larger than a third preset ground base surface hardness D3, if D is larger than D3, starting K motors by the control unit, and stopping after T3 time;

and when Rz is R4, judging whether the ground base surface hardness D is more than a fourth preset ground base surface hardness D4, if D is more than D4, starting the K motors by the control unit, and stopping the K motors after T4 time.

3. The method of claim 2, wherein in step S2, when the control unit controls the operation time of the motors according to the hardness D of the ground surface, if Rz is Ri, and D is Dj, the control unit starts K motors to operate for 0.7 × Tj, and then stops, and sets i to 1,2,3,4, j to 1,2,3, 4.

4. The method for quickly tamping a foundation under hydraulic pressure according to claim 3, wherein in step S2, when tamping is performed, the control unit obtains the feedback pressure of the hydraulic hammer and sets the feedback pressure as an actual feedback pressure F, when the setting is completed, the control unit compares the actual feedback pressure F with a preset feedback pressure to determine whether the diameter of the bottom surface of the hydraulic hammer needs to be adjusted, when the control unit determines that the diameter of the bottom surface of the hydraulic hammer does not need to be adjusted, the measuring instrument is used for measuring the tamping descent depth, and when the control unit determines that the diameter of the bottom surface of the hydraulic hammer needs to be adjusted, the control unit determines the adjustment amount of the diameter of the bottom surface of the hydraulic hammer by combining the difference of the feedback pressures;

wherein the control unit is provided with preset feedback pressures, including a first preset feedback pressure F1 and a second preset feedback pressure F2, wherein F1 < F2;

if F is less than F1, the control unit judges that the diameter of the bottom surface of the hydraulic hammer needs to be adjusted;

if F1 is not less than F < F2, the control unit judges that the diameter of the bottom surface of the hydraulic hammer does not need to be adjusted;

if F > F2, the control unit determines that the diameter of the bottom surface of the hydraulic hammer needs to be adjusted.

5. The construction method for quickly tamping a foundation hydraulically according to claim 4, wherein when the control unit determines that the diameter of the bottom surface of the hydraulic hammer needs to be adjusted, the control unit calculates a feedback pressure difference AF, and when the calculation is completed, the control unit compares the feedback pressure difference AF with a preset feedback pressure difference to determine the diameter adjustment amount of the bottom surface of the hydraulic hammer;

the control unit is further provided with a preset feedback pressure difference value and a diameter standard regulating quantity, wherein the preset feedback pressure difference value comprises a first preset feedback pressure difference value delta F1, a second preset feedback pressure difference value delta F2 and a third preset feedback pressure difference value delta F3, and delta F1 is smaller than delta F2 and smaller than delta F3; the diameter standard regulating quantity comprises a diameter first standard regulating quantity R1, a diameter second standard regulating quantity R2, a diameter third standard regulating quantity R3 and a diameter fourth standard regulating quantity R4, wherein R1 < R2 < R3 < R4;

if DeltaF is less than DeltaF 1, the control unit judges that the diameter adjustment amount of the bottom surface of the hydraulic hammer is R1;

if the delta F is not less than delta F1 and not more than delta F2, the control unit judges that the diameter adjustment quantity of the bottom surface of the hydraulic hammer is R2;

if the delta F is not less than delta F2 and not more than delta F3, the control unit judges that the diameter adjustment quantity of the bottom surface of the hydraulic hammer is R3;

if the delta F is equal to or larger than the delta F3, the control unit judges that the diameter adjusting quantity of the bottom surface of the hydraulic hammer is R4.

6. The construction method for quickly tamping a foundation with hydraulic pressure according to claim 5, wherein the control unit controls the first regulator to regulate the diameter of the bottom surface of the hydraulic hammer when the control unit determines that the regulated amount of the diameter of the bottom surface of the hydraulic hammer is Ri, the control unit calculates the regulated diameter R ' of the bottom surface of the hydraulic hammer, if F is less than F1, R ' is set to R0-Ri, if F is greater than F2, R ' is set to R0+ Ri, wherein R0 represents the diameter of the bottom surface of the hydraulic hammer, and i is set to 1,2,3,4 by the hydraulic equipment setting.

7. The construction method for quickly tamping a foundation hydraulically according to claim 5, wherein when the control unit determines that the diameter of the bottom surface of the hydraulic hammer needs to be adjusted, the control unit calculates the feedback pressure difference Δ F according to the following formula:

Δ F ═ F1-F, or Δ F ═ F-F2;

wherein F denotes an actual feedback pressure of the hydraulic hammer, F1 denotes a first preset feedback pressure, F2 denotes a second preset feedback pressure, and when F < F1, Δ F is F1-F, and when F > F2, Δ F is F-F2.

8. The construction method for quickly tamping a foundation using hydraulic pressure according to claim 4, wherein when the control unit determines that the diameter of the bottom surface of the hydraulic hammer does not need to be adjusted, the tamping descent depth H is compared with a preset tamping descent depth H0 pre-stored in the control unit to determine whether the weight of the hydraulic hammer needs to be adjusted, the tamping descent depth difference Δ H is compared with a preset tamping descent depth difference to determine a weight adjustment parameter, when the weight adjustment parameter is determined, the drop distance L is compared with a standard drop distance to determine a hydraulic hammer weight adjustment amount Δ M, the actual feedback pressure F of the hydraulic machine is directly read from a hydraulic device, the tamping descent depth H is measured by using a measuring instrument, the control unit sets the measured tamping descent depth H to H, when the setting is completed, the control unit compares the tamping descent depth H with a preset tamping descent depth H0 to determine whether the weight of the hydraulic hammer needs to be adjusted, when the control unit determines that the weight of the hydraulic hammer does not need to be adjusted, the step S3 is carried out, and when the control unit determines that the weight of the hydraulic hammer needs to be adjusted, the weight adjusting quantity is determined by combining the weight adjusting parameter and the falling distance;

if H is less than H0, the central control unit judges that the weight of the hydraulic hammer needs to be adjusted;

and if H is larger than or equal to H0, the central control unit judges that the weight of the hydraulic hammer does not need to be adjusted.

9. The construction method for quickly tamping a foundation by using hydraulic pressure according to claim 8, wherein when the control unit determines that the weight of the hydraulic hammer needs to be adjusted, the control unit calculates the difference Δ H of the tamping descent depth, and the calculation formula is as follows:

△H＝(H0-H)×ζ；

wherein H0 represents a preset tamping descending depth, H represents a tamping descending depth, ζ represents a tamping descending depth adjustment parameter, and ζ represents H0 × 70%, ζ is 2, H0 × 70% or more and H0 × 80%, ζ is 3, H0 × 80% or more and H0 × 90%, ζ is 4, and H0 × 90% or more and ζ is 5;

when the calculation is finished, the control unit compares the difference value delta H of the tamping descending depth with a preset difference value of the tamping descending depth to determine a weight adjusting parameter;

the control unit is further provided with a preset tamping descent depth difference value and a weight adjusting parameter, wherein the preset tamping descent depth difference value comprises a first preset tamping descent depth difference value delta H1, a second preset tamping descent depth difference value delta H2 and a third preset tamping descent depth difference value delta H3, and delta H1 is smaller than delta H2 and smaller than delta H3; the weight adjustment parameters include a weight adjustment first parameter σ 1, a weight adjustment second parameter σ 2, a weight adjustment third parameter σ 3, and a weight adjustment fourth parameter σ 4, where σ 1+ σ 2+ σ 3+ σ 4 is 1;

if Δ H < [ delta ] H1, the control unit determines that the weight adjustment parameter is σ 1;

if Δ H1 ≦ Δ H2, the control unit determines that the weight adjustment parameter is σ 2;

if Δ H2 ≦ Δ H3, the control unit determines that the weight adjustment parameter is σ 3;

if Δ H ≧ Δ H3, the control unit determines the weight adjustment parameter as σ 4.

10. The construction method for quickly tamping a foundation by using hydraulic pressure according to claim 9, wherein when the control unit determines that the weight adjustment parameter is σ i, i is set to be 1,2,3,4, the control unit obtains a drop distance L, when the obtaining is completed, the control unit compares the drop distance L with a standard drop distance to determine a weight adjustment amount Δ M of the hydraulic hammer, and when the control unit determines that the weight adjustment amount Δ M of the hydraulic hammer, the control unit controls the second regulator to increase the weight of the hydraulic hammer, and the adjustment amount is Δ M;

the control unit is further provided with standard drop distances including a first standard drop distance L1, a second standard drop distance L2 and a third standard drop distance L3, wherein L1 is more than L2 and more than L3;

if L < L1, the control unit calculates a weight adjustment amount Δ M of the hydraulic hammer, setting Δ M to lx [ L/(L1-L) ] × σ 1;

if L1 ≦ L < L2, the control unit calculates a hydraulic hammer weight adjustment amount Δ M, setting Δ M × [ (L2-L)/(L-L1) ] × σ 2;

if L2 ≦ L < L3, the control unit calculates a hydraulic hammer weight adjustment amount Δ M, setting Δ M × [ (L3-L)/(L-L2) ] × σ 3;

if L is equal to or greater than L3, the control unit calculates a weight adjustment amount Δ M of the hydraulic hammer, and sets Δ M to [ (L-L3)/L3] × σ 4.

Background

The tamping technology of the hydraulic rapid foundation tamping method is formed in 90 years of the 20 th century, advanced equipment which can move rapidly and tamp rapidly in preparation of war is developed by the United kingdom department of defense and BSP company, the advanced equipment is converted into civil use after 1995, in the early 2003, rapid hydraulic tamping equipment which is self-developed by China is born in Taian Shandong, is mainly used for road reinforcing operation, is blank in the aspect of house construction, feels that the vibration of a dynamic tamping process is large in the long-term foundation treatment process, needs to be constructed in a certain range away from a building, has long construction period and no time span of layering and rolling, and has high requirement on the characteristic water content of soil, so that a process between the two is urgently needed to effectively reinforce the foundation, and the hydraulic rapid foundation tamping construction method is provided.

With the continuous development of infrastructure construction, the scale of foundation treatment engineering is continuously enlarged, and engineering machinery is increasingly developed towards intellectualization and electromechanical integration. The high-speed hydraulic tamper is widely applied to working blind areas of large-scale tamping machines such as earth and rockfill corners, bridge abutment backfill areas and the like and various foundation compaction projects such as parking lots, airports, highways and the like with good maneuverability, controllability and safety, and meets the single-point or continuous compaction requirements on tamping operation surfaces.

At present, some construction methods for quickly tamping a foundation by using hydraulic pressure exist, but the tamping parameters in the tamping process cannot be accurately adjusted through the feedback pressure of a hydraulic hammer, the tamping descending depth and the falling distance, so that the tamping parameters need to be checked, and the time cost and the economic cost are high.

Disclosure of Invention

Therefore, the invention provides a construction method for quickly tamping a foundation by using hydraulic pressure, which can effectively solve the technical problem that in the prior art, the tamping parameters in the tamping process cannot be accurately adjusted by the pressure feedback, the tamping descending depth and the falling distance of a hydraulic hammer, so that the time cost and the economic cost are saved.

In order to achieve the purpose, the invention provides a construction method for quickly tamping a foundation by using hydraulic pressure, which comprises the following steps:

s1, measuring and setting line, calibrating by using a level meter, setting a tamping point and tamping parameters, and positioning hydraulic equipment, wherein the tamping parameters comprise the weight of a hydraulic hammer, the bottom surface diameter R0 of the hydraulic hammer and the drop distance L;

step S2, tamping, aligning the hydraulic hammer to a tamping point for tamping according to a set tamping point, comparing the actual feedback pressure F of the hydraulic hammer with a preset feedback pressure to determine whether the diameter of the bottom surface of the hydraulic hammer needs to be adjusted or not by the control unit in the tamping process, comparing the feedback pressure difference value delta F with a standard feedback pressure difference value to determine the diameter adjusting quantity of the bottom surface of the hydraulic hammer, controlling the starting of a plurality of motors according to the diameter adjusting quantity of the bottom surface of the hydraulic hammer, and controlling the running time of the plurality of motors according to the hardness of the ground bottom surface to adjust tamping parameters;

step S3, leveling, namely leveling the rammed pit by a bulldozer;

step S4, full tamping, namely loosening the soil and tamping the surface layer of the field by using a hydraulic hammer;

in step S2, when the control unit controls the plurality of motors according to the adjustment Rz of the bottom surface diameter of the hydraulic hammer, N motors are provided, where N is greater than or equal to 3,

if Rz is R1, the control unit controls K motors to be started simultaneously, so that the motors control the screw rod nut mechanism to enable the pushing plate to push the air pressure tank to enable air pressure to enter the hydraulic support rod, the hydraulic support rod enters the hydraulic hammer after passing through the variable point dropping device to inflate the hydraulic hammer to adjust the diameter of the bottom surface of the hydraulic hammer, and K is INT ([ (1/5). times.N ]);

if Rz is R2, the control unit controls K motors to be started simultaneously, so that the motors control the screw rod nut mechanism to enable the pushing plate to push the air pressure tank to enable air pressure to enter the hydraulic support rod, the hydraulic support rod enters the hydraulic hammer after passing through the variable point dropping device to inflate the hydraulic hammer to adjust the diameter of the bottom surface of the hydraulic hammer, and K is INT ([ (1/4). times.N ]);

if Rz is R3, the control unit controls K motors to be started simultaneously, so that the motors control the screw rod nut mechanism to enable the pushing plate to push the air pressure tank to enable air pressure to enter the hydraulic support rod, the hydraulic support rod enters the hydraulic hammer after passing through the variable point dropping device to inflate the hydraulic hammer to adjust the diameter of the bottom surface of the hydraulic hammer, and K is INT ([ (1/3). times.N ]);

if Rz is R4, the control unit controls K motors to be started simultaneously, so that the motors control the screw rod nut mechanism to enable the pushing plate to push the air pressure tank to enable air pressure to enter the hydraulic support rod, the hydraulic support rod enters the hydraulic hammer after passing through the variable point dropping device to inflate the hydraulic hammer to adjust the diameter of the bottom surface of the hydraulic hammer, and K is INT ([ (1/2). times.N ]);

wherein Ri represents the ith standard adjustment quantity of the diameter, and i is set to be 1,2,3 and 4.

Further, in the step S2, when the control unit controls the plurality of motors according to the adjustment value Rz of the bottom surface diameter of the hydraulic hammer, the control unit measures the hardness of the ground base surface by using the hardness measuring instrument, sets the measured hardness of the ground base surface to D, and controls the operation time of the plurality of motors according to the hardness D of the ground base surface;

the control unit is provided with preset ground base surface hardness and motor running time and comprises a first preset ground base surface hardness D1, a second preset ground base surface hardness D2, a third preset ground base surface hardness D3 and a fourth preset ground base surface hardness D4, wherein D1 is more than D2 and more than D3 and more than D4;

the motor running times comprise a first motor running time T1, a second motor running time T2, a third motor running time T3 and a fourth motor running time T4, and the running times are different from each other;

when Rz is R1, judging whether the ground base surface hardness D is larger than a first preset ground base surface hardness D1, if D is larger than D1, starting K motors by the control unit, and stopping after T1 time;

when Rz is R2, judging whether the ground base surface hardness D is larger than a second preset ground base surface hardness D2, if D is larger than D2, starting K motors by the control unit, and stopping after T2 time;

when Rz is R3, judging whether the ground base surface hardness D is larger than a third preset ground base surface hardness D3, if D is larger than D3, starting K motors by the control unit, and stopping after T3 time;

and when Rz is R4, judging whether the ground base surface hardness D is more than a fourth preset ground base surface hardness D4, if D is more than D4, starting the K motors by the control unit, and stopping the K motors after T4 time.

In step S2, when the control unit controls the operation times of the plurality of motors according to the surface hardness D of the ground, if D is equal to or less than Dj when Rz is equal to Ri, the control unit starts the K motors to operate for 0.7 × Tj and stops, and i is set to 1,2,3,4, and j is set to 1,2,3, 4.

Further, in step S2, in the ramming, the control unit obtains the feedback pressure of the hydraulic hammer and sets the feedback pressure as an actual feedback pressure F, when the setting is completed, the control unit compares the actual feedback pressure F with a preset feedback pressure to determine whether the diameter of the bottom surface of the hydraulic hammer needs to be adjusted, when the control unit determines that the diameter of the bottom surface of the hydraulic hammer does not need to be adjusted, the measuring instrument is used to measure the ramming descent depth, and when the control unit determines that the diameter of the bottom surface of the hydraulic hammer needs to be adjusted, the control unit determines the adjustment amount of the diameter of the bottom surface of the hydraulic hammer by combining the difference of the feedback pressures;

wherein the control unit is provided with preset feedback pressures, including a first preset feedback pressure F1 and a second preset feedback pressure F2, wherein F1 < F2;

if F is less than F1, the control unit judges that the diameter of the bottom surface of the hydraulic hammer needs to be adjusted;

if F1 is not less than F < F2, the control unit judges that the diameter of the bottom surface of the hydraulic hammer does not need to be adjusted;

if F > F2, the control unit determines that the diameter of the bottom surface of the hydraulic hammer needs to be adjusted.

When the control unit judges that the diameter of the bottom surface of the hydraulic hammer needs to be adjusted, the control unit calculates a feedback pressure difference value delta F, and when the calculation is completed, the control unit compares the feedback pressure difference value delta F with a preset feedback pressure difference value to determine the diameter adjusting quantity of the bottom surface of the hydraulic hammer;

the control unit is further provided with a preset feedback pressure difference value and a diameter standard regulating quantity, wherein the preset feedback pressure difference value comprises a first preset feedback pressure difference value delta F1, a second preset feedback pressure difference value delta F2 and a third preset feedback pressure difference value delta F3, and delta F1 is smaller than delta F2 and smaller than delta F3; the diameter standard regulating quantity comprises a diameter first standard regulating quantity R1, a diameter second standard regulating quantity R2, a diameter third standard regulating quantity R3 and a diameter fourth standard regulating quantity R4, wherein R1 < R2 < R3 < R4;

if DeltaF is less than DeltaF 1, the control unit judges that the diameter adjustment amount of the bottom surface of the hydraulic hammer is R1;

if the delta F is not less than delta F1 and not more than delta F2, the control unit judges that the diameter adjustment quantity of the bottom surface of the hydraulic hammer is R2;

if the delta F is not less than delta F2 and not more than delta F3, the control unit judges that the diameter adjustment quantity of the bottom surface of the hydraulic hammer is R3;

if the delta F is equal to or larger than the delta F3, the control unit judges that the diameter adjusting quantity of the bottom surface of the hydraulic hammer is R4.

Further, when the control unit determines that the diameter adjustment amount of the bottom surface of the hydraulic hammer is Ri, the control unit controls the first adjustor to adjust the diameter of the bottom surface of the hydraulic hammer, calculates the adjusted diameter R ' of the bottom surface of the hydraulic hammer, sets R ' to R0-Ri if F < F1, sets R ' to R0+ Ri if F > F2, wherein R0 represents the diameter of the bottom surface of the hydraulic hammer, and sets i to 1,2,3,4 according to the setting of the hydraulic equipment.

Further, when the control unit judges that the diameter of the bottom surface of the hydraulic hammer needs to be adjusted, the control unit calculates a feedback pressure difference value delta F, and the calculation formula is as follows:

Δ F ═ F1-F, or Δ F ═ F-F2;

wherein F denotes an actual feedback pressure of the hydraulic hammer, F1 denotes a first preset feedback pressure, F2 denotes a second preset feedback pressure, and when F < F1, Δ F is F1-F, and when F > F2, Δ F is F-F2.

Further, when the control unit judges that the diameter of the bottom surface of the hydraulic hammer is not required to be adjusted, the tamping descending depth H is compared with a preset tamping descending depth H0 prestored in the control unit to determine whether the weight of the hydraulic hammer is required to be adjusted, the tamping descending depth difference Delta H is compared with a preset tamping descending depth difference to determine a weight adjusting parameter, when the weight adjusting parameter is determined, the drop distance L is compared with a standard drop distance to determine a hydraulic hammer weight adjusting quantity Delta M, the actual feedback pressure F of the hydraulic machine is directly read from hydraulic equipment, the tamping descending depth H is measured by a measuring instrument, the control unit sets the measured tamping descending depth to H, when the setting is completed, the control unit compares the tamping descending depth H with a preset tamping descending depth H0 to determine whether the weight of the hydraulic hammer is required to be adjusted, and when the control unit determines that the weight of the hydraulic hammer is not required to be adjusted, entering step S3, when the control unit determines that the weight of the hydraulic hammer needs to be adjusted, determining the weight adjustment amount by combining the weight adjustment parameter and the drop distance;

if H is less than H0, the central control unit judges that the weight of the hydraulic hammer needs to be adjusted;

and if H is larger than or equal to H0, the central control unit judges that the weight of the hydraulic hammer does not need to be adjusted.

Further, when the control unit judges that the weight of the hydraulic hammer needs to be adjusted, the control unit calculates a difference value delta H of the tamping descent depth, and the calculation formula is as follows:

△H＝(H0-H)×ζ；

wherein H0 represents a preset tamping descending depth, H represents a tamping descending depth, ζ represents a tamping descending depth adjustment parameter, and ζ represents H0 × 70%, ζ is 2, H0 × 70% or more and H0 × 80%, ζ is 3, H0 × 80% or more and H0 × 90%, ζ is 4, and H0 × 90% or more and ζ is 5;

when the calculation is finished, the control unit compares the difference value delta H of the tamping descending depth with a preset difference value of the tamping descending depth to determine a weight adjusting parameter;

the control unit is further provided with a preset tamping descent depth difference value and a weight adjusting parameter, wherein the preset tamping descent depth difference value comprises a first preset tamping descent depth difference value delta H1, a second preset tamping descent depth difference value delta H2 and a third preset tamping descent depth difference value delta H3, and delta H1 is smaller than delta H2 and smaller than delta H3; the weight adjustment parameters include a weight adjustment first parameter σ 1, a weight adjustment second parameter σ 2, a weight adjustment third parameter σ 3, and a weight adjustment fourth parameter σ 4, where σ 1+ σ 2+ σ 3+ σ 4 is 1;

if Δ H < [ delta ] H1, the control unit determines that the weight adjustment parameter is σ 1;

if Δ H1 ≦ Δ H2, the control unit determines that the weight adjustment parameter is σ 2;

if Δ H2 ≦ Δ H3, the control unit determines that the weight adjustment parameter is σ 3;

if Δ H ≧ Δ H3, the control unit determines the weight adjustment parameter as σ 4.

Further, when the control unit determines that the weight adjusting parameter is sigma i, setting i to be 1,2,3 and 4, acquiring a drop distance L by the control unit, comparing the drop distance L with a standard drop distance to determine a hydraulic hammer weight adjusting amount delta M when the acquisition is completed, and controlling a second adjustor to increase the weight of the hydraulic hammer when the control unit determines that the hydraulic hammer weight adjusting amount is delta M, wherein the adjusting amount is delta M;

the control unit is further provided with standard drop distances including a first standard drop distance L1, a second standard drop distance L2 and a third standard drop distance L3, wherein L1 is more than L2 and more than L3;

if L < L1, the control unit calculates a weight adjustment amount Δ M of the hydraulic hammer, setting Δ M to lx [ L/(L1-L) ] × σ 1;

if L1 ≦ L < L2, the control unit calculates a hydraulic hammer weight adjustment amount Δ M, setting Δ M × [ (L2-L)/(L-L1) ] × σ 2;

if L2 ≦ L < L3, the control unit calculates a hydraulic hammer weight adjustment amount Δ M, setting Δ M × [ (L3-L)/(L-L2) ] × σ 3;

if L is equal to or greater than L3, the control unit calculates a weight adjustment amount Δ M of the hydraulic hammer, and sets Δ M to [ (L-L3)/L3] × σ 4.

Compared with the prior art, the construction method has the beneficial effects that the construction method comprises the steps of measuring and setting line, tamping, filling and full tamping and the like, wherein in the tamping process, whether the diameter of the bottom surface of the hydraulic hammer needs to be adjusted or not is determined by comparing the actual feedback pressure of the hydraulic hammer with the preset feedback pressure, the feedback pressure difference value is compared with the standard feedback pressure difference value to determine the diameter adjusting quantity of the bottom surface of the hydraulic hammer and adjust the diameter adjusting quantity through the first adjuster, when the first adjuster adjusts the diameter of the bottom surface of the hydraulic hammer, the starting of a plurality of motors is controlled according to the determined diameter adjusting quantity of the bottom surface of the hydraulic hammer, the running time of the plurality of motors is controlled according to the hardness of the bottom surface, when the determination is completed, the control unit controls the plurality of motors to be started simultaneously, and the started motors control the screw nut mechanism so that the pushing plate pushes the air pressure tank to enable the air pressure to enter the hydraulic support rod, hydraulic pressure branch gets into the hydraulic hammer behind the device through the variable point and aerifys in order to adjust hydraulic hammer bottom surface diameter to can carry out the accuracy to the hydraulic hammer through control starter motor quantity and motor operating duration and aerify, and then can carry out the accuracy to the tamping parameter and adjust, effectively saved time cost and economic cost.

Particularly, the weight adjusting parameter is determined by comparing the difference value delta H of the tamping descending depth with the preset difference value of the tamping descending depth, so that the tamping parameter in the tamping process can be accurately adjusted through the pressure feedback, the tamping descending depth and the falling distance of the hydraulic hammer, the tamping process can be completed in one step, the tamping in-place inspection is not needed, and the time cost and the economic cost are effectively saved.

Particularly, the invention compares the drop distance L with the standard drop distance to determine the weight adjustment quantity delta M of the hydraulic hammer, so that the tamping parameters in the tamping process can be accurately adjusted through the feedback pressure of the hydraulic hammer, the tamping descending depth and the drop distance, and further the tamping process can be completed in one step without tamping in-place inspection, thereby effectively saving the time cost and the economic cost.

Furthermore, the method compares the actual feedback pressure F of the hydraulic hammer with the preset feedback pressure to determine whether the diameter of the bottom surface of the hydraulic hammer needs to be adjusted or not, compares the feedback pressure difference value delta F with the standard feedback pressure difference value to determine the diameter adjustment quantity of the bottom surface of the hydraulic hammer, controls the starting of the motors according to the diameter adjustment quantity of the bottom surface of the hydraulic hammer, and controls the running time of the motors according to the hardness of the ground base surface to adjust the tamping parameters, so that the hydraulic hammer can be accurately inflated by controlling the number of the starting motors and the running time of the motors, the tamping parameters can be accurately adjusted, and the time cost and the economic cost are effectively saved.

Furthermore, the running time of the motors is determined by combining the diameter adjustment quantity of the hydraulic hammer and the hardness D of the ground base surface, so that the hydraulic hammer can be accurately inflated by controlling the number of the starting motors and the running time of the motors, the tamping parameters can be accurately adjusted, and the time cost and the economic cost are effectively saved.

Further, the invention compares the actual feedback pressure F of the hydraulic hammer with the preset feedback pressure to determine whether the diameter of the bottom surface of the hydraulic hammer needs to be adjusted or not, compares the feedback pressure difference Delta F with the standard feedback pressure difference to determine the diameter adjustment amount of the bottom surface of the hydraulic hammer and adjusts the diameter adjustment amount through a first adjuster, compares the tamping descent depth H with the preset tamping descent depth H0 stored in the control unit in advance to determine whether the weight of the hydraulic hammer needs to be adjusted or not, compares the tamping descent depth difference Delta H with the preset tamping descent depth difference to determine the weight adjustment parameter, compares the drop distance L with the standard drop distance to determine the weight adjustment amount Delta M of the hydraulic hammer when the weight adjustment parameter is determined, compares the hardness D of the ground base surface with the preset hardness of the ground base surface to determine the weight of the hydraulic hammer when the hydraulic hammer is fully tamped, thereby enabling the pressure feedback pressure F through the hydraulic hammer to determine the weight adjustment amount Delta M, The tamping parameters in the tamping process are accurately adjusted by the tamping descending depth and the tamping distance, so that the tamping can be completed in one step in the tamping process without tamping in-place inspection, and the time cost and the economic cost are effectively saved.

Furthermore, the method and the device determine whether the diameter of the bottom surface of the hydraulic hammer needs to be adjusted or not by comparing the actual feedback pressure F with the preset feedback pressure, so that the tamping parameters in the tamping process can be accurately adjusted through the feedback pressure of the hydraulic hammer, the tamping descending depth and the falling distance, the tamping process can be completed in one step, the tamping in-place inspection is not needed, and the time cost and the economic cost are effectively saved.

Furthermore, the diameter adjusting quantity of the bottom surface of the hydraulic hammer is determined by comparing the feedback pressure difference value delta F with the preset feedback pressure difference value, so that the tamping parameters in the tamping process can be accurately adjusted through the feedback pressure of the hydraulic hammer, the tamping descending depth and the falling distance, the tamping process can be further completed, the tamping in-place inspection is not needed, and the time cost and the economic cost are effectively saved.

Furthermore, the invention compares the tamping descending depth H with the preset tamping descending depth H0 to determine whether the weight of the hydraulic hammer needs to be adjusted, so that the tamping parameters in the tamping process can be accurately adjusted through the feedback pressure, the tamping descending depth and the falling distance of the hydraulic hammer, and further the tamping process can be completed in one step without in-place tamping inspection, thereby effectively saving the time cost and the economic cost.

Drawings

FIG. 1 is a schematic structural diagram of a construction apparatus for quickly tamping a foundation by using hydraulic pressure according to an embodiment of the present invention;

FIG. 2 is a block diagram showing a construction apparatus for quickly tamping a foundation by using hydraulic pressure according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a first adjuster of a construction apparatus for quickly tamping a foundation using hydraulic pressure according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a construction method for quickly tamping a foundation by using hydraulic pressure according to an embodiment of the present invention;

the notation in the figure is: 1. a hydraulic device; 11. a hydraulic hammer; 12. a variable drop device; 13. a hoisting device; 131. a display screen; 132. a first regulator; 133. a second regulator; 134. a control unit; 135. a motor; 136. a feed screw nut mechanism; 137. a push plate; 138. an air pressure tank; 139. a hydraulic strut; 2. a measuring instrument; 3. and (5) a hardness detector.

Detailed Description

In order that the objects and advantages of the invention will be more clearly understood, the invention is further described below with reference to examples; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and do not limit the scope of the present invention.

It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1,2,3 and 4, fig. 1 is a schematic structural diagram of a construction apparatus for quickly compacting a foundation by using hydraulic pressure according to an embodiment of the present invention, fig. 2 is a block diagram of a hoisting apparatus of a construction apparatus for quickly compacting a foundation by using hydraulic pressure according to an embodiment of the present invention, fig. 3 is a schematic structural diagram of a first regulator of a construction apparatus for quickly compacting a foundation by using hydraulic pressure according to an embodiment of the present invention, fig. 4 is a schematic structural diagram of a construction method for quickly compacting a foundation by using hydraulic pressure according to an embodiment of the present invention, and the construction apparatus for quickly compacting a foundation by using hydraulic pressure according to the present embodiment includes:

the hydraulic equipment 1 is provided with a hydraulic hammer 11, a variable point dropping device 12 and a hoisting device 13, wherein the variable point dropping device 12 is connected to the top end of the hoisting device 13, the hydraulic hammer 11 is hung below the variable point dropping device 12, the hydraulic hammer 11 is used for tamping a foundation, the variable point dropping device 12 is used for matching the hydraulic hammer 11 to work when the foundation is tamped, and the hoisting device 13 is used for controlling the hydraulic hammer 11 according to a set tamping point and tamping parameters;

a measuring instrument 2 connected to the hydraulic apparatus 1 for measuring a tamping descent depth;

a hardness detector 3 connected to the hydraulic apparatus 1 for detecting the hardness of the ground surface;

referring to fig. 2, the lifting device 13 is provided with a display screen 131, a first regulator 132, a second regulator 133 and a control unit 134, the control unit 134 is respectively connected with the display screen 131, the first regulator 132 and the second regulator 133, the display screen 131 is used for reading the actual feedback pressure of the hydraulic hammer 11, the first regulator 132 is used for regulating the diameter of the bottom surface of the hydraulic hammer, the second regulator 133 is used for regulating the weight of the hydraulic hammer, and the control unit 134 is used for controlling the parameter regulation process of the lifting device 13.

Referring to fig. 3, the first regulator 132 includes a motor 135, a lead screw nut mechanism 136, a push plate 137, an air pressure tank 138 and a hydraulic support bar 139, the lead screw nut mechanism 136 is connected below the motor 135, the push plate 137 is connected below the lead screw nut mechanism 136, the air pressure tank 138 is connected below the push plate 137, the hydraulic support bar 139 is connected below the air pressure tank 138, when the first regulator 132 regulates, the motor 135 controls the lead screw nut mechanism 136 to make the push plate 137 push the air pressure tank 138 to make the air pressure enter the hydraulic support bar 139, and the hydraulic support bar 139 enters the hydraulic hammer 11 through the variable point dropping device 12 to inflate the hydraulic hammer to regulate the bottom diameter of the hydraulic hammer;

the first regulator 132 further includes a battery (not shown) connected to the motor 135 for providing power to the motor 135.

In this embodiment, the measuring instrument 2 is a construction depth measuring instrument 2, and the measurement is more accurate compared with the common measuring instrument 2. A PLC control board is provided in the control unit 134. The adjustment process and the adjustment principle of the second adjuster 133 are the same as those of the first adjuster 132, and thus, detailed description thereof is omitted.

S1, measuring and setting line, calibrating by using a level meter, setting a tamping point and tamping parameters, and positioning the hydraulic equipment 1, wherein the tamping parameters comprise the weight of a hydraulic hammer, the bottom surface diameter R0 of the hydraulic hammer and the drop distance L;

step S2, tamping, namely, tamping the hydraulic hammer 11 to a tamping point according to a set tamping point, wherein when tamping is carried out, the control unit 134 compares the actual feedback pressure F of the hydraulic hammer 11 with a preset feedback pressure to determine whether the diameter of the bottom surface of the hydraulic hammer needs to be adjusted, compares the feedback pressure difference value delta F with a standard feedback pressure difference value to determine the diameter adjusting quantity of the bottom surface of the hydraulic hammer, controls the starting of the motors 135 according to the diameter adjusting quantity of the bottom surface of the hydraulic hammer, and controls the running time of the motors 135 according to the hardness of the ground bottom surface to adjust tamping parameters;

step S3, leveling, namely leveling the rammed pit by a bulldozer;

step S4, full tamping, namely loosening the soil and tamping the surface layer of the field by using a hydraulic hammer 11;

in step S2, when the control unit 134 controls the plurality of motors 135 according to the adjustment value Rz of the bottom surface diameter of the hydraulic hammer, N motors 135 are provided, where N is equal to or greater than 3,

if Rz is R1, the control unit 134 controls K motors 135 to be started simultaneously, so that the motors 135 control the lead screw and nut mechanisms 136, the push plates 137 push the air pressure tanks 138, the air pressure enters the hydraulic struts 139, the hydraulic struts 139 pass through the variable point dropping device 12 and then enter the hydraulic hammer 11 to inflate the hydraulic hammer, and the diameter of the bottom surface of the hydraulic hammer is adjusted, and K is INT ([ (1/5) × N ]);

if Rz is R2, the control unit 134 controls K motors 135 to be started simultaneously, so that the motors 135 control the lead screw and nut mechanisms 136, the push plates 137 push the air pressure tanks 138, the air pressure enters the hydraulic struts 139, the hydraulic struts 139 pass through the variable point dropping device 12 and then enter the hydraulic hammer 11 to inflate the hydraulic hammer, and the diameter of the bottom surface of the hydraulic hammer is adjusted, and K is INT ([ (1/4) × N ]);

if Rz is R3, the control unit 134 controls K motors 135 to be started simultaneously, so that the motors 135 control the lead screw and nut mechanisms 136, the push plates 137 push the air pressure tanks 138, the air pressure enters the hydraulic struts 139, the hydraulic struts 139 pass through the variable point dropping device 12 and then enter the hydraulic hammer 11 to inflate the hydraulic hammer, and the diameter of the bottom surface of the hydraulic hammer is adjusted, and K is INT ([ (1/3) × N ]);

if Rz is R4, the control unit 134 controls K motors 135 to be started simultaneously, so that the motors 135 control the lead screw and nut mechanisms 136, the push plates 137 push the air pressure tanks 138, the air pressure enters the hydraulic struts 139, the hydraulic struts 139 pass through the variable point dropping device 12 and then enter the hydraulic hammer 11 to inflate the hydraulic hammer, and the diameter of the bottom surface of the hydraulic hammer is adjusted, and K is INT ([ (1/2) × N ]);

wherein Ri represents the ith standard adjustment quantity of the diameter, and i is set to be 1,2,3 and 4.

In this embodiment, INT () represents rounding.

Specifically, the invention compares the actual feedback pressure F of the hydraulic hammer 11 with the preset feedback pressure to determine whether the diameter of the bottom surface of the hydraulic hammer needs to be adjusted, compares the feedback pressure difference value delta F with the standard feedback pressure difference value to determine the diameter adjustment quantity of the bottom surface of the hydraulic hammer, controls the starting of the motors 135 according to the diameter adjustment quantity of the bottom surface of the hydraulic hammer, and controls the running time of the motors 135 according to the hardness of the ground bottom surface to adjust the tamping parameters, so that the hydraulic hammer 11 can be accurately inflated by controlling the number of the starting motors 135 and the running time of the motors 135, the tamping parameters can be accurately adjusted, and the time cost and the economic cost are effectively saved.

Specifically, in the step S2, when the control unit 134 controls the motors 135 according to the adjustment value Rz of the bottom surface diameter of the hydraulic hammer, the hardness of the ground surface is measured by the hardness measuring instrument 2, and the control unit 134 sets the measured hardness of the ground surface to D and controls the operation time of the motors 135 according to the hardness D of the ground surface;

the control unit 134 is provided with preset ground base surface hardness and motor 135 running time, and comprises a first preset ground base surface hardness D1, a second preset ground base surface hardness D2, a third preset ground base surface hardness D3 and a fourth preset ground base surface hardness D4, wherein D1 < D2 < D3 < D4;

the motor 135 operation times include a first operation time T1 of the motor 135, a second operation time T2 of the motor 135, a third operation time T3 of the motor 135 and a fourth operation time T4 of the motor 135, which are different from each other;

when Rz is equal to R1, determining whether the ground base hardness D is greater than a first preset ground base hardness D1, if D > D1, the control unit 134 starts the K motors 135 to operate for T1 time and then stops;

when Rz is R2, determining whether the ground base hardness D is greater than a second preset ground base hardness D2, if D > D2, the control unit 134 starts the K motors 135 to operate for T2 time and then stops;

when Rz is equal to R3, determining whether the ground base hardness D is greater than a third preset ground base hardness D3, if D > D3, the control unit 134 starts the K motors 135 to operate for T3 time and then stops;

when Rz is R4, it is determined whether the floor surface hardness D is greater than the fourth preset floor surface hardness D4, and if D > D4, the control unit 134 starts the K motors 135 to operate for T4 time and then stops.

Specifically, the running time of the motors 135 is determined by combining the diameter adjustment amount of the hydraulic hammer and the hardness D of the ground base surface, so that the hydraulic hammer 11 can be accurately inflated by controlling the number of the starting motors 135 and the running time of the motors 135, the tamping parameters can be accurately adjusted, and the time cost and the economic cost are effectively saved.

Specifically, when the control unit 134 controls the operation time of the plurality of motors 135 according to the floor surface hardness D, if D is equal to or less than Dj when Rz is equal to Ri, the control unit 134 starts the K motors 135 to operate for 0.7 × Tj and then stops, and i is set to 1,2,3,4, j is set to 1,2,3, 4.

Specifically, in the step S2, in the ramming process, the control unit 134 obtains the feedback pressure of the hydraulic hammer 11 and sets the feedback pressure as an actual feedback pressure F, when the setting is completed, the control unit 134 compares the actual feedback pressure F with a preset feedback pressure to determine whether the bottom diameter of the hydraulic hammer needs to be adjusted, when the control unit 134 determines that the bottom diameter of the hydraulic hammer does not need to be adjusted, the measuring instrument 2 is used to measure the ramming descent depth, and when the control unit 134 determines that the bottom diameter of the hydraulic hammer needs to be adjusted, the control unit 134 determines the adjustment amount of the bottom diameter of the hydraulic hammer by combining the feedback pressure difference;

wherein the control unit 134 is provided with preset feedback pressures, including a first preset feedback pressure F1 and a second preset feedback pressure F2, wherein F1 < F2;

if F is less than F1, the control unit 134 judges that the diameter of the bottom surface of the hydraulic hammer needs to be adjusted;

if F1 is not less than F < F2, the control unit 134 judges that the diameter of the bottom surface of the hydraulic hammer does not need to be adjusted;

if F > F2, the control unit 134 determines that the diameter of the bottom surface of the hammer needs to be adjusted.

In the embodiment, the pressure feedback is too small, which indicates that the pressure is not enough and the stressed area needs to be adjusted small, and the pressure feedback is too large, which indicates that the pressure is too large, so that the compacted foundation is not uniform, and the stressed area needs to be adjusted large.

Specifically, the method and the device determine whether the diameter of the bottom surface of the hydraulic hammer needs to be adjusted or not by comparing the actual feedback pressure F with the preset feedback pressure, so that the tamping parameters in the tamping process can be accurately adjusted through the feedback pressure of the hydraulic hammer, the tamping descending depth and the falling distance, the tamping process can be completed in one step, the tamping in-place inspection is not needed, and the time cost and the economic cost are effectively saved.

Specifically, when the control unit 134 determines that the diameter of the bottom surface of the hydraulic hammer needs to be adjusted, the control unit 134 calculates a feedback pressure difference Δ F, and when the calculation is completed, the control unit 134 compares the feedback pressure difference Δ F with a preset feedback pressure difference to determine the diameter adjustment amount of the bottom surface of the hydraulic hammer;

wherein the control unit 134 is further provided with a preset feedback pressure difference value and a diameter standard adjustment amount, the preset feedback pressure difference value comprises a first preset feedback pressure difference value deltaF 1, a second preset feedback pressure difference value deltaF 2 and a third preset feedback pressure difference value deltaF 3, wherein deltaF 1 is smaller than deltaF 2 is smaller than deltaF 3; the diameter standard regulating quantity comprises a diameter first standard regulating quantity R1, a diameter second standard regulating quantity R2, a diameter third standard regulating quantity R3 and a diameter fourth standard regulating quantity R4, wherein R1 < R2 < R3 < R4;

if DeltaF is less than DeltaF 1, the control unit 134 judges that the diameter adjustment amount of the bottom surface of the hydraulic hammer is R1;

if the delta F is not less than delta F1 and not more than delta F2, the control unit 134 judges that the diameter adjustment amount of the bottom surface of the hydraulic hammer is R2;

if the delta F is not less than delta F2 and not more than delta F3, the control unit 134 judges that the diameter adjustment amount of the bottom surface of the hydraulic hammer is R3;

if Δ F ≧ Δ F3, the control unit 134 determines the amount of diameter adjustment of the bottom face of the hydraulic hammer to be R4.

Specifically, the diameter adjusting quantity of the bottom surface of the hydraulic hammer is determined by comparing the feedback pressure difference value delta F with the preset feedback pressure difference value, so that the tamping parameters in the tamping process can be accurately adjusted through the feedback pressure of the hydraulic hammer, the tamping descending depth and the falling distance, the tamping process can be completed in one step, the tamping in-place inspection is not needed, and the time cost and the economic cost are effectively saved.

Specifically, when the control unit 134 determines that the adjustment amount of the diameter of the bottom surface of the hydraulic hammer is Ri, the control unit 134 controls the first adjuster 132 to adjust the diameter of the bottom surface of the hydraulic hammer, and the control unit 134 calculates the adjusted diameter R ' of the bottom surface of the hydraulic hammer, sets R ' to R0-Ri if F < F1, sets R ' to R0+ Ri if F > F2, where R0 represents the diameter of the bottom surface of the hydraulic hammer, and sets i to 1,2,3,4 by the hydraulic apparatus 1.

Specifically, when the control unit 134 determines that the bottom surface diameter of the hydraulic hammer needs to be adjusted, the control unit 134 calculates the feedback pressure difference Δ F by the following calculation formula:

Δ F ═ F1-F, or Δ F ═ F-F2;

where F denotes an actual feedback pressure of the hydraulic hammer 11, F1 denotes a first preset feedback pressure, F2 denotes a second preset feedback pressure, and Δ F is F1-F when F < F1, and F is F-F2 when F > F2.

Specifically, when the control unit 134 determines that the diameter of the bottom surface of the hydraulic hammer does not need to be adjusted, the tamping descent depth H is compared with a preset tamping descent depth H0 prestored in the control unit 134 to determine whether the weight of the hydraulic hammer needs to be adjusted, the tamping descent depth difference Δ H is compared with a preset tamping descent depth difference to determine a weight adjustment parameter, when the weight adjustment parameter is determined, the drop distance L is compared with a standard drop distance to determine the weight adjustment quantity Δ M of the hydraulic hammer, the actual feedback pressure F of the hydraulic machine is directly read from the hydraulic device 1, the tamping descent depth H is measured by the measuring instrument 2, the control unit 134 sets the measured tamping descent depth H to H, when the setting is completed, the control unit 134 compares the tamping descent depth H with the preset tamping descent depth H0 to determine whether the weight of the hydraulic hammer needs to be adjusted, when the control unit 134 determines that the weight of the hydraulic hammer does not need to be adjusted, the process proceeds to step S3, and when the control unit 134 determines that the weight of the hydraulic hammer needs to be adjusted, the control unit determines the weight adjustment amount by combining the weight adjustment parameter and the drop distance;

if H is less than H0, the central control unit judges that the weight of the hydraulic hammer needs to be adjusted;

and if H is larger than or equal to H0, the central control unit judges that the weight of the hydraulic hammer does not need to be adjusted.

Specifically, the invention compares the tamping descending depth H with the preset tamping descending depth H0 to determine whether the weight of the hydraulic hammer needs to be adjusted, so that the tamping parameters in the tamping process can be accurately adjusted through the feedback pressure, the tamping descending depth and the falling distance of the hydraulic hammer, and further the tamping process can be completed in one step without in-place tamping inspection, thereby effectively saving time cost and economic cost.

Specifically, when the control unit 134 determines that the weight of the hydraulic hammer needs to be adjusted, the control unit 134 calculates the difference Δ H of the tamping descent depth, and the calculation formula is as follows:

△H＝(H0-H)×ζ；

wherein H0 represents a preset tamping descending depth, H represents a tamping descending depth, ζ represents a tamping descending depth adjustment parameter, and ζ represents H0 × 70%, ζ is 2, H0 × 70% or more and H0 × 80%, ζ is 3, H0 × 80% or more and H0 × 90%, ζ is 4, and H0 × 90% or more and ζ is 5;

when the calculation is completed, the control unit 134 compares the difference Δ H in the tamping descent depth with a preset difference in the tamping descent depth to determine a weight adjustment parameter;

wherein the control unit 134 is further provided with a preset tamping descent depth difference value and a weight adjustment parameter, the preset tamping descent depth difference value comprises a first preset tamping descent depth difference value Δ H1, a second preset tamping descent depth difference value Δ H2 and a third preset tamping descent depth difference value Δ H3, wherein Δ H1 is less than Δ H2 is less than Δ H3; the weight adjustment parameters include a weight adjustment first parameter σ 1, a weight adjustment second parameter σ 2, a weight adjustment third parameter σ 3, and a weight adjustment fourth parameter σ 4, where σ 1+ σ 2+ σ 3+ σ 4 is 1;

if Δ H <. Δ H1, the control unit 134 determines that the weight adjustment parameter is σ 1;

if Δ H1 ≦ Δ H2, the control unit 134 determines the weight adjustment parameter as σ 2;

if Δ H2 ≦ Δ H3, the control unit 134 determines the weight adjustment parameter as σ 3;

if Δ H ≧ Δ H3, the control unit 134 determines the weight adjustment parameter as σ 4.

Specifically, the weight adjusting parameter is determined by comparing the difference value delta H of the tamping descending depth with the preset difference value of the tamping descending depth, so that the tamping parameter in the tamping process can be accurately adjusted through the pressure feedback, the tamping descending depth and the falling distance of the hydraulic hammer, the tamping process can be completed in one step, the tamping in-place inspection is not needed, and the time cost and the economic cost are effectively saved.

Specifically, when the control unit 134 determines that the weight adjustment parameter is σ i, setting i to 1,2,3,4, the control unit 134 obtains the drop distance L, when the obtaining is completed, the control unit 134 compares the drop distance L with the standard drop distance to determine the hydraulic hammer weight adjustment amount Δ M, and when the control unit 134 determines that the hydraulic hammer weight adjustment amount is Δ M, the control unit 133 controls the second adjuster 133 to increase the weight of the hydraulic hammer 11 by the adjustment amount Δ M;

wherein the control unit 134 is further provided with a standard drop distance, including a first standard drop distance L1, a second standard drop distance L2 and a third standard drop distance L3, wherein L1 < L2 < L3;

if L < L1, the control unit 134 calculates a weight adjustment amount Δ M of the hydraulic hammer, setting Δ M to lx [ L/(L1-L) ] × σ 1;

if L1 ≦ L < L2, the control unit 134 calculates a hydraulic hammer weight adjustment amount Δ M, setting Δ M × [ (L2-L)/(L-L1) ] × σ 2;

if L2 ≦ L < L3, the control unit 134 calculates a hydraulic hammer weight adjustment amount Δ M, setting Δ M × [ (L3-L)/(L-L2) ] × σ 3;

if L is equal to or greater than L3, the control unit 134 calculates a weight adjustment amount Δ M of the hydraulic hammer, and sets Δ M to [ (L-L3)/L3] × σ 4.

Specifically, the weight adjustment quantity delta M of the hydraulic hammer is determined by comparing the drop distance L with the standard drop distance, so that the tamping parameters in the tamping process can be accurately adjusted through the feedback pressure of the hydraulic hammer, the tamping descending depth and the drop distance, the tamping process can be completed in one step, the tamping in-place inspection is not needed, and the time cost and the economic cost are effectively saved.

Specifically, when the control unit 134 determines that the weight of the hydraulic hammer needs to be adjusted, the control unit 134 calculates the difference Δ H of the tamping descent depth, and the calculation formula is as follows:

△H＝(H0-H)×ζ；

wherein H0 denotes a preset tamping descending depth, H denotes a tamping descending depth, ζ denotes a tamping descending depth adjustment parameter, and ζ denotes an H0 × 70% or higher, ζ is 2, H0 × 70% or higher, H0 × 80% or higher, ζ is 3, H0 × 80% or higher, H0 × 90% or higher, ζ is 4, or H0 × 90% or higher, and ζ is 5.

Specifically, the difference value delta H of the compaction descent depth is determined through a preset formula, and the setting of the adjustment parameters of the compaction descent depth aims at improving the accuracy of calculation.

So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.