1. A lime soil filling construction method is characterized in that; the method comprises the following steps:

paving a plain soil layer, paving plain soil on the lower bearing layer, and compacting and leveling the plain soil layer;

paving a lime layer, paving lime on the plain soil layer, and leveling the lime layer;

mixing, namely mixing the upper parts of the lime layer and the plain soil layer together by using a road mixer;

in the mixing process, the road mixer measures the upper surface of the compacted plain soil layer, measures the upper surface of the invaded plain soil layer, obtains the height difference which is the invasion depth, and performs servo control on the mixing depth of the road mixer through the depth.

2. The lime soil filling construction method according to claim 1, characterized in that: the road mixer comprises a frame (120), wherein a mixing device (200) is arranged on the frame (120), a first detection mechanism (310) is arranged on the frame (120) and positioned at the front side of the mixing device (200), and a second detection mechanism (320) is arranged on the frame (120) and positioned at the rear side of the mixing device (200); the mixing device (200) comprises a mixing paddle (220), a mixing frame (210), a driving motor (230) and a hydraulic cylinder (240), the mixing paddle (220) is rotatably connected to the mixing frame (210), the driving motor (230) is fixedly connected to the mixing frame (210), the driving motor (230) is in transmission connection with the mixing paddle (220), the mixing frame (210) is connected to the rack (120) in a sliding mode, one end of the hydraulic cylinder (240) is fixedly connected to the rack (120), and the other end of the hydraulic cylinder (240) is fixedly connected to the mixing frame (210); the first detection mechanism (310) and the second detection mechanism (320) are both in electric signal connection with the hydraulic cylinder (240).

3. The lime soil filling construction method according to claim 2, characterized in that: first detection mechanism (310) with second detection mechanism (320) all include branch native subassembly (500) and distance sensor (400), divide native subassembly (500) with distance sensor (400) all set up in frame (120), divide native subassembly (500) including dividing native board (520), divide native board (520) to set up the front side of distance sensor (400), distance sensor (400) with pneumatic cylinder (240) signal of telecommunication is connected.

4. A method of grey fill construction according to claim 3, characterised in that: the soil separating assembly (500) further comprises a first soil retaining plate (530), the first soil retaining plate (530) is arranged on one side of the distance sensor (400) close to the center of the road, and the front end of the first soil retaining plate (530) is connected with the soil separating plate (520).

5. A method of grey fill construction according to claim 4, characterised in that: the side of the soil separating plate (520) close to the road center inclines towards the rear side.

6. A method of grey fill construction according to claim 5, characterised in that: the soil distribution assembly (500) further comprises a troweling plate (540), the troweling plate (540) is arranged on the rack (120), and the troweling plate (540) is arranged on the rear side of the soil distribution plate (520).

7. The lime soil filling construction method according to claim 6, characterized in that: divide native subassembly (500) still includes second fender breast board (550), second fender breast board (550) set up in on frame (120), just second fender breast board (550) set up first fender breast board (530) are close to the one side in road center, the rear side of second fender breast board (550) with trowelling plate (540) fixed connection.

8. A method of grey fill construction according to claim 7, characterised in that: the positions of the troweling plate (540) and the second soil baffle (550) are both adjustable.

9. A method of gray soil filling construction according to any one of claims 4 to 8, characterized in that: the soil-distributing assembly (500) further comprises a soil-distributing frame (510), an air cylinder (570) and a plurality of supporting rods (560), the soil-distributing plate (520) is arranged on the soil-distributing frame (510), one end of each supporting rod (560) is hinged to the frame (120), the other end of each supporting rod (560) is hinged to the soil-distributing frame (510), one end of each air cylinder (570) is hinged to the frame (120), and the other end of each air cylinder (570) is hinged to the soil-distributing frame (510).

10. A method of grey fill construction according to claim 9, characterised in that: the upper end of the soil separating plate (520) is inclined toward the rear side.

Background

The lime soil is an intermediate layer which is formed by combining lime and plain soil on a lower bearing layer in road construction so as to strengthen the good process of a road surface and a roadbed. The difference between the lime soil and the plain soil filling lies in the control of water content, the uniformity of mixed materials, the depth control of mixing and the guarantee of compaction degree, and the factors directly influence the technical operation key points of lime soil construction.

At present, Chinese patent application with the publication number of CN111794029A and the publication number of 10 and 20 in 2020 and the publication number of 10 and 20 proposes a lime soil filling construction method, which comprises the steps of paving a plain soil layer, rolling the plain soil layer, paving a lime layer, mixing and the like, wherein in the mixing step, a road mixer is required to be firstly used for carrying out amplitude division trial mixing on a position 10-15m away from an initial route, and then the construction needs to manually confirm the depth, so as to obtain a first mixing depth parameter; and after confirming the parameters, carrying out the whole line construction of the frame.

In view of the above-mentioned related technologies, the inventor believes that, in the whole line mixing process, the parameter measured after the first mixing is mainly used as the basis, and therefore, the uniformity of the depth of the soil layer penetrated by the vegetable soil during mixing cannot be guaranteed.

Disclosure of Invention

In order to improve the homogeneity of invading plain soil layer degree of depth when the mix, the application provides a lime soil filling construction method.

The application provides a lime soil filling construction method, adopts following technical scheme:

a lime soil filling construction method comprises the following steps:

paving a plain soil layer, paving plain soil on the lower bearing layer, and compacting and leveling the plain soil layer;

paving a lime layer, paving lime on the plain soil layer, and leveling the lime layer;

mixing, namely mixing the upper parts of the lime layer and the plain soil layer together by using a road mixer;

in the mixing process, the road mixer measures the upper surface of the compacted plain soil layer, measures the upper surface of the invaded plain soil layer, obtains the height difference which is the invasion depth, and performs servo control on the mixing depth of the road mixer through the depth.

Through adopting above-mentioned technical scheme, at the mix in-process, the road mixer is measured the upper surface on the plain soil layer after the compaction, obtains distance A this moment, and the road mixer is measured the upper surface on the plain soil layer after being invaded in addition, obtains distance B this moment, and the difference in height between A and B is the degree of depth that the plain soil layer was invaded promptly. Assuming that the depth of the road mixer intruding into the plain soil layer is C in the construction process, the servo control is carried out on the road mixer in the actual construction process, so that the height difference between A and B is close to C. Because the depth of the road mixer invading the plain soil layer is continuously measured and adjusted in the whole construction process, the uniformity of the depth of the invading plain soil layer during mixing is improved.

Optionally, the road mixer includes a frame, a mixing device is disposed on the frame, a first detection mechanism is disposed on the frame and located at the front side of the mixing device, and a second detection mechanism is disposed on the frame and located at the rear side of the mixing device; the mixing device comprises a mixing paddle, a mixing frame driving motor and a hydraulic cylinder, the mixing paddle is rotationally connected to the mixing frame, the driving motor is fixedly connected to the mixing frame and is in transmission connection with the mixing paddle, the mixing frame is connected to the rack in a sliding mode, one end of the hydraulic cylinder is fixedly connected to the rack, and the other end of the hydraulic cylinder is fixedly connected to the mixing frame; the first detection mechanism and the second detection mechanism are both in electric signal connection with the hydraulic cylinder.

By adopting the technical scheme, when the lime layer and the plain soil layer are mixed, the first detection mechanism is used for detecting the distance A between the upper surface of the compacted plain soil layer and the rack, the mixing device is used for mixing the lime layer and the plain soil layer, and the second detection mechanism is used for detecting the distance B between the upper surface of the invaded plain soil layer and the rack; the first detection mechanism and the second detection mechanism simultaneously control the hydraulic cylinder to stretch and retract, and then the mixing device is controlled to invade the depth of the plain soil layer.

Optionally, the first detection mechanism and the second detection mechanism both comprise a soil separation assembly and a distance sensor, the soil separation assembly and the distance sensor are both arranged on the rack, the soil separation assembly comprises a soil separation plate, the soil separation plate is arranged on the front side of the distance sensor, and the distance sensor is in electrical signal connection with the hydraulic cylinder.

By adopting the technical scheme, in the advancing process of the road mixer, the soil separating plate of the first detection mechanism pushes away lime on the plain soil layer, so that the upper surface of the plain soil layer is exposed outside, and the distance sensor of the first detection mechanism can measure the distance between the upper surface of the plain soil layer and the rack; the soil separating plate of the second detection mechanism pushes away the mixed soil, so that the upper surface of the invaded plain soil layer is exposed outside, the distance sensor of the second detection mechanism can measure the distance between the upper surface of the invaded plain soil layer and the rack, the distance sensor on the first detection mechanism and the second detection mechanism simultaneously controls the stretching of the hydraulic cylinder, and the depth of the mixing device in the invaded plain soil layer is further controlled.

Optionally, divide native subassembly still includes first fender soil board, first fender soil board sets up one side that distance sensor is close to the road center, the front end of first fender soil board with divide native board to be connected.

Through adopting above-mentioned technical scheme, divide the soil board to push away lime or divide the soil board to push away the good lime of mix, lime and lime are blockked of first fender soil board for lime and lime are difficult for sliding to influence distance sensor's measurement on the plain soil layer upper surface exposed, have improved measurement accuracy, and then have improved the homogeneity of invading the plain soil layer degree of depth during the mix.

Optionally, one side of the soil separating plate close to the road center is inclined towards the rear side.

By adopting the technical scheme, in the advancing process of the road mixer, the soil separating plate on the first detection mechanism pushes lime on the plain soil layer to the middle part of the road, so that the mixing device can mix the lime; the soil separating plate on the second detection mechanism pushes the soil ash to the middle of the road, so that the resource utilization rate is improved.

Optionally, the soil distribution assembly further comprises a troweling plate, the troweling plate is arranged on the rack, and the troweling plate is arranged on the rear side of the soil distribution plate.

By adopting the technical scheme, lime pushed away by the soil separating plate on the first detection mechanism is piled towards the middle of a road to form a soil packet on the road surface, after the distance sensor on the first detection mechanism detects the distance between the plain soil layer and the rack, the trowelling plate on the first detection mechanism trowels the soil packet, and then the mixing device mixes the upper part of the plain soil layer with the lime layer, so that the mixing uniformity is improved; the lime soil pushed away by the soil separating plate on the second detection mechanism can form a soil packet on the road surface after being stacked towards the middle of the road, and after the distance sensor on the second detection mechanism measures the distance between the upper surface of the invaded plain soil layer and the rack, the trowelling plate on the second detection mechanism trowels the soil packet, so that subsequent construction is facilitated.

Optionally, the soil separating assembly further comprises a second soil retaining plate, the second soil retaining plate is arranged on the rack, the second soil retaining plate is arranged on one side, close to the road center, of the first soil retaining plate, and the rear side of the second soil retaining plate is fixedly connected with the troweling plate.

By adopting the technical scheme, after the lime or the lime soil pushed away by the soil separating plate is piled towards the middle of the road, the second soil retaining plate blocks the part of the lime or the lime soil, so that the part of the lime or the lime soil is difficult to continue to be piled towards the middle of the road, and then the lime or the lime soil is leveled through the leveling plate, thereby improving the smoothness of the road after construction.

Optionally, the positions of the troweling plate and the second soil blocking plate are adjustable.

Through adopting above-mentioned technical scheme, when the thickness on lime layer changes, accessible adjustment trowelling plate and second fender soil plate make the bottommost end of trowelling plate, second fender soil plate all the time with the topmost parallel and level on lime layer, so divide the soil packet of soil plate heap alright more leveled by floating.

Optionally, divide native subassembly still including dividing native frame, cylinder and a plurality of bracing piece, divide native board setting to be in divide native frame is last, the one end of bracing piece with the frame is articulated, the other end of bracing piece with divide native frame articulated, the one end of cylinder with the frame is articulated, the other end of cylinder with divide native frame articulated.

By adopting the technical scheme, when mixing is not needed, the air cylinder can control the soil separating frame to rise, so that the bottommost end of the soil separating plate is not abutted against the ground, and the road mixer is convenient to move; when the soil separating plate is mixed, the extension degree of the air cylinder on the second detection mechanism can be adjusted according to the depth of the invaded plain soil layer, so that the bottommost end of the soil separating plate on the second detection mechanism is abutted against the topmost end of the invaded plain soil layer, and the detection precision of the distance sensor on the second detection mechanism is improved.

Optionally, the upper end of the soil separating plate is inclined towards the rear side.

By adopting the technical scheme, when mixing, the cylinder firstly controls the soil separating frame to descend, so that the bottommost end of the soil separating plate is abutted against the topmost end of the plain soil layer or the topmost end of the immersed plain soil layer, and then the cylinder can stop operating. When the upper surface of plain soil layer is not very level or the mixing device invades the degree of depth of plain soil layer and changes, divide the native board and can adjust automatically, improved first detection mechanism and second detection mechanism's detection precision.

In summary, the present application includes at least one of the following beneficial technical effects:

1. carry out servo control through the mix degree of depth to the road mixer, constantly measure and adjust the degree of depth that the road mixer invades plain soil layer in whole work progress, the homogeneity of invading plain soil layer degree of depth when having improved the mix.

2. Through the setting of first detection mechanism, second detection mechanism and mix device, the flexible of first detection mechanism and second detection mechanism simultaneous control pneumatic cylinder, and then the degree of depth of control mix device invasion plain soil layer.

3. Through the arrangement of the soil separating plate and the position sensor, the lime or the lime soil covering the plain soil layer is not easy to influence the detection of the position sensor, the precision of the position sensor is improved, and the uniformity of the depth of the half-filled plain soil layer is improved.

4. Through the setting of the trowelling plate, the soil separating plate can form soil bags on the road surface after pushing away lime or lime soil, and then the trowelling plate can trowel the soil bags, so that the uniformity of subsequent mixing is improved, and the subsequent construction is facilitated.

Drawings

FIG. 1 is a schematic flow chart diagram of an embodiment of the present application;

FIG. 2 is a schematic view of the overall structure of the road mixer of the embodiment of the present application;

FIG. 3 is a schematic cross-sectional view of a part of the structure of a mixing device according to an embodiment of the present application, aiming at showing the specific structure of the mixing device;

FIG. 4 is a schematic view of the overall structure of the first detecting mechanism or the second detecting mechanism according to the embodiment of the present application;

FIG. 5 is an exploded view of a portion of the structure of the first sensing mechanism or the second sensing mechanism in accordance with an embodiment of the present application, which is intended to reveal the structure of the sliding assembly;

fig. 6 is an enlarged schematic view of a portion a in fig. 4.

Description of reference numerals: 110. a vehicle body; 120. a frame; 200. a mixing device; 210. a mixing frame; 220. a mixing paddle; 230. a drive motor; 240. a hydraulic cylinder; 310. a first detection mechanism; 320. a second detection mechanism; 400. a distance sensor; 410. an induction block; 420. a probe rod; 430. a compression spring; 440. a limiting block; 450. a roller; 500. a soil separating assembly; 510. a soil separating frame; 511. a strip-shaped hole; 520. a soil separating plate; 530. a first soil retaining plate; 540. smearing the plate; 550. a second soil blocking plate; 551. a threaded hole; 552. a guide hole; 560. a support bar; 570. a cylinder; 600. a sliding assembly; 610. adjusting the bolt; 620. and a guide post.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses a lime soil filling construction method. Referring to fig. 1, the lime soil filling construction method includes the steps of:

s1: paving a plain soil layer, paving plain soil on the lower bearing layer, and compacting and leveling the plain soil layer by using a light road roller, wherein the compaction degree of the plain soil layer is smaller due to the use of the light road roller during rolling, so that the plain soil layer is leveled and is convenient for mixing of a subsequent road mixer;

s2: paving a lime layer, paving lime on the plain soil layer, leveling the lime layer, and enabling the thickness of each part of the leveled lime layer to be uniform so as to be convenient for a follow-up road mixer to mix the lime layer and the upper part of the plain soil layer together;

s3: mixing, namely mixing the upper parts of the lime layer and the plain soil layer together by using a road mixer, wherein the road mixer can invade the plain soil layer for a certain depth, and further mixing the plain soil on the upper part of the plain soil layer and the lime layer together. In the mixing process, the road mixer measures the upper surface of the compacted plain soil layer, measures the upper surface of the invaded plain soil layer, obtains the height difference which is the depth of the road mixer invading the plain soil layer at present, and carries out servo control on the subsequent invasion depth of the road mixer through the depth. So in whole work progress, can constantly measure and adjust the degree of depth that the road mixer invaded plain soil layer, the homogeneity of invading plain soil layer degree of depth when having improved the mix.

Referring to fig. 2 and 3, the road mixer includes a body 110 and a frame 120, and the frame 120 is disposed at a front side of the body 110, and the frame 120 is moved by the body 110. The frame 120 is provided with a mixing device 200 for mixing the plain soil and the lime, the front side of the mixing device 200 is provided with a first detection mechanism 310, and the rear side of the mixing device 200 is provided with a second detection mechanism 320. The first detection mechanism 310 and the second detection mechanism 320 are both disposed on the frame 120, and the first detection mechanism 310 and the second detection mechanism 320 are both electrically connected to the mixing device 200.

When mix lime layer and plain soil layer, first detection mechanism 310 is used for detecting interval A between the upper surface on the plain soil layer after the compaction and frame 120, and mixing device 200 mixes lime layer and plain soil layer, and second detection mechanism 320 is used for detecting interval B between the upper surface on the plain soil layer after being invaded and frame 120, and the difference between interval A and the interval B is the degree of depth that mixing device 200 actually invaded the plain soil layer promptly. Assuming that the depth of the mixing device 200 required to penetrate the subsoil is C, the actual depth of the mixing device 200 penetrating the subsoil is compared with C.

If the actual depth of the mixing device 200 invading the plain soil layer is greater than C, the first detection mechanism 310 and the second detection mechanism 320 simultaneously control the mixing device 200 to reduce the invasion amount of the mixing device 200 to the plain soil layer; if the actual depth of the mixing device 200 intruding into the plain soil layer is smaller than C, the first detection mechanism 310 and the second detection mechanism 320 control the mixing device 200 at the same time, so as to increase the intrusion amount of the mixing device 200 into the plain soil layer. So in whole work progress, can constantly measure and adjust the degree of depth that the road mixer invaded plain soil layer, make the volume of being invaded on plain soil layer be close C all the time, the homogeneity of the plain soil layer degree of depth of invasion when having improved the mix.

Referring to fig. 3, the mixing apparatus 200 includes a mixing paddle 220, a mixing rack 210 for supporting the mixing paddle 220, a driving motor 230 for driving the mixing paddle 220, and a hydraulic cylinder 240 for adjusting the position of the mixing rack 210. The mixing device is rotatably connected to the mixing frame 210, the driving motor 230 is fixedly connected to the mixing frame 210 through bolts, and the driving motor 230 is coaxially and fixedly connected with the mixing paddles 220 through a coupler. The cylinder body of the hydraulic cylinder 240 is fixedly connected to the frame 120 through a bolt, the piston rod of the hydraulic cylinder 240 is fixedly connected to the mixing frame 210 through a bolt, and the first detection mechanism 310 and the second detection mechanism 320 are both in electrical signal connection with the hydraulic cylinder 240.

In the mixing process, the driving motor 230 drives the mixing paddle 220 to rotate, so that the upper part of the plain soil layer and the lime layer can be mixed, the piston rods of the first detection mechanism 310 and the second detection mechanism 320 control the hydraulic cylinder 240 to stretch out or retract, and then the depth of the mixing paddle 220 invading the plain soil layer is controlled.

Referring to fig. 3 and 4, each of the first detection mechanism 310 and the second detection mechanism 320 includes a distance sensor 400, and the distance sensor 400 is fixedly connected to the frame 120 by bolts. In order to enable the distance sensor 400 to directly detect the upper surface of the plain soil layer over lime or lime soil on the plain soil layer, the first detection mechanism 310 and the second detection mechanism 320 further include a soil separation assembly 500 for separating the lime or the lime soil, and the soil separation assembly 500 includes a soil separation frame 510 for supporting and a soil separation plate 520 welded on the soil separation frame 510. The soil separating plate 520 is arranged on the front side of the distance sensor 400, and in the process of advancing of the road mixer, the soil separating plate 520 pushes away lime or lime soil on the front side of the distance sensor 400, so that the surface of a plain soil layer is exposed outside, and the distance sensor 400 is convenient to measure.

Referring to fig. 3 and 4, when the road mixer mixes plain soil and lime, the mixing paddle 220 may have a difference in the depth of the plain soil layer of road both sides invasion, and for this reason, first detection mechanism 310 and second detection mechanism 320 all set up two, and two first detection mechanisms 310 set up respectively in the axial both sides of mixing paddle 220, and two second detection mechanisms 320 also set up respectively in the axial both sides of mixing paddle 220.

Referring to fig. 3 and 4, after the lime or the lime soil is divided by the soil dividing plate 520, the lime or the lime soil is wasted, and in order to save materials, one end of the soil dividing plate 520 near the middle of the road is inclined rearward, so that the soil dividing plate 520 pushes the lime or the lime soil on both sides of the road toward the middle of the road, thereby reducing the waste of materials.

Referring to fig. 3 and 4, since lime or soil lime is already present in the middle of the road, the pushed lime or soil lime may flow back after the pushing action of the soil separating plate 520 is lost, and the pushed lime or soil lime may affect the measurement of the distance sensor 400. For this, the soil dividing frame 510 is further welded with a first soil blocking plate 530, the first soil blocking plate 530 is disposed at a side of the distance sensor 400 near the center of the road, and the front end of the first soil blocking plate 530 is welded with the rear end of the soil dividing plate 520. The lime or the lime soil is continuously pushed by the first soil blocking plate 530 after the lime or the lime soil is pushed left and right by the missing soil separating plate 520, so that the lime and the lime soil are not easy to flow back at the distance sensor 400, and the possibility that the measurement of the distance sensor 400 is influenced by the backflow of the lime or the lime soil is further reduced.

Referring to fig. 3 and 4, after the soil separating plate 520 pushes, the lime and the lime soil form bulges on the road surface. If the bulge occurs on the front side of the mixing device 200, the mixing device 200 may mix unevenly; if the bulge occurs at the rear side of the mixing device 200, the subsequent construction of the road is affected. To this end, the soil dividing assembly 500 further includes a troweling plate 540 for troweling the bulge, the troweling plate 540 is disposed on the soil dividing frame 510, and the troweling plate 540 is disposed at the rear side of the soil dividing plate 520 and the first soil retaining plate 530. The bulge formed by pushing the soil separating plate 520 is trowelled by the trowelling plate 540 when passing through the trowelling plate 540, so that the mixing uniformity of the mixing device 200 is improved, and the subsequent construction of roads is facilitated.

Referring to fig. 3 and 4, when the leveling plate 540 is used to level the bumps, a part of lime or lime soil is still likely to flow toward the side of the leveling plate 540 near the center of the road, thereby forming smaller bumps on the road. To this end, the soil separating assembly 500 further includes a second soil guard plate 550, the second soil guard plate 550 being disposed on the frame 120, and the second soil guard plate 550 being disposed on a side of the first soil guard plate 530 close to the center of the road. The front end of the second soil blocking plate 550 is flush with the front end of the soil separating plate 520, the rear end of the second soil blocking plate 550 is welded with one end of the troweling plate 540 close to the center of the road, and one end of the troweling plate 540 far away from the center of the road inclines towards the rear side. After the soil separating plate 520 pushes the lime or the lime soil, the pushed lime or the lime soil is temporarily accumulated between the first soil retaining plate 530 and the second soil retaining plate 550, and the pushed lime soil is not easy to flow continuously toward the middle of the road beyond the second soil retaining plate 550; along with the advancement of the road mixer, lime or lime soil accumulated between the first soil retaining plate 530 and the second soil retaining plate 550 is leveled by the leveling plate 540, so that the leveling effect is improved, and the probability of bulge formation on the road is further reduced.

Referring to fig. 4 and 5, in order to make the soil-dividing assembly 500 adaptable to construction of various roads, the thickness of the lime course may be different when constructing different roads, and the second soil-retaining plate 550 is installed on the soil-dividing frame 510 by means of the sliding assembly 600. The sliding assembly 600 comprises an adjusting bolt 610 for adjusting the height of the second soil retaining plate 550 and a guide post 620 for guiding the second soil retaining plate 550, the adjusting bolt 610 is rotatably connected to the soil separating frame 510, a threaded hole 551 is formed in the second soil retaining plate 550, and the adjusting bolt 610 penetrates through the soil separating frame 510 and is then screwed into the threaded hole 551. The guide post 620 is welded on the soil separating frame 510, a guide hole 552 is formed in the second soil blocking plate 550, and the guide post 620 penetrates through the guide hole 552.

Can make second fender soil plate 550, troweling board 540 slide from top to bottom through rotating adjusting bolt 610, so can adjust the difference in height that the bottommost end of second fender soil plate 550 and the bottommost end of first fender soil plate 530, and then satisfy the change of lime seam thickness and the change of mixing arrangement invasion plain soil layer degree of depth, improve the suitability.

Referring to fig. 4, when the mixing of the native soil and the lime is not required, the soil-separating frame 510 needs to be lifted to facilitate the scheduling of the road mixer. For this purpose, the soil separating assembly 500 further comprises a cylinder 570 and a plurality of support rods 560, the number of the support rods 560 is two, in this embodiment, one end of each support rod 560 is hinged to the frame 120, the other end of each support rod 560 is hinged to the soil separating frame 510, and a portion of the frame 120, the support rods 560 and a portion of the soil separating frame 510 form a parallelogram. The cylinder 570 is hinged on the frame 120, the piston rod of the cylinder 570 is hinged on any one of the support rods 560, and the soil separating frame 510 can be lifted or lowered by extending or retracting the cylinder 570.

Referring to fig. 3 and 4, since the upper surface of the subsoil layer may have undulations and the depth of penetration of the mixing apparatus 200 into the subsoil layer may have a stirring, the distance between the lowermost end of the soil-dividing plate 520 and the frame 120 also varies. Therefore, the upper end of the soil-dividing plate 520 is inclined toward the rear side, and when mixing is performed, the air cylinder 570 controls the soil-dividing frame 510 to be lowered, so that the lowermost end of the soil-dividing plate 520 is brought into contact with the uppermost end of the raw soil layer or the uppermost end of the raw soil layer after the penetration, and then the operation of the air cylinder 570 is stopped.

In the moving process of the road mixer, the lime or the lime soil pushed away by the soil separating plate 520 applies pressure to the soil separating plate 520, so that the soil separating plate 520 is automatically attached to the uppermost end of the plain soil layer or the uppermost end of the invaded plain soil layer. When the upper surface of the plain soil layer is not flat or the depth of the mixing device 200 invading the plain soil layer changes, the soil separating plate 520 can be automatically adjusted, and the detection precision of the first detection mechanism 310 and the second detection mechanism 320 is improved.

Referring to fig. 4 and 6, since dust is easily stirred when lime or lime soil is pushed away by using the soil separating plate 520, the stirred dust easily interferes with the sensitivity of the distance sensor 400 of optical signals, in order to improve the detection accuracy of the distance sensor 400, the distance sensor 400 includes a sensing block 410 and a detecting rod 420, the sensing block 410 is fixedly connected to the frame 120 by a screw, and the detecting rod 420 is inserted into the sensing block 410 and slidably connected to the sensing block 410. A strip-shaped hole 511 is formed in the soil dividing frame 510, and one end, far away from the induction block 410, of the detection rod 420 penetrates through the soil dividing frame 510 through the strip-shaped hole 511. When the road mixer is mixing, the bottommost end of the detection rod 420 is abutted against the upper surface of the subsoil layer, and the distance between the upper surface of the subsoil layer and the rack 120 can be measured by calculating the length of the detection rod 420 extending out of the induction block 410.

Referring to fig. 4 and 6, the soil layer inevitably forms a pit during the course of being laid and invaded, and the probe rod 420 is easily broken if the probe rod 420 is inserted into the pit during the course of the road mixer. Therefore, the roller 450 is rotatably connected to the bottommost end of the detection rod 420, the roller 450 replaces the detection rod 420 to contact with the upper surface of the plain soil layer, and the roller 450 is more easily rolled out of the pit after falling into the pit, so that the breakage probability of the detection rod 420 is reduced.

Referring to fig. 4 and 6, a stopper 440 is further welded to the outer circumferential surface of the lower end of the detection rod 420, a compression spring 430 is sleeved outside the detection rod 420, one end of the compression spring 430 abuts against the stopper 440, and the other end of the compression spring 430 abuts against the sensing block 410. When rolling out from the pit, the roller 450 can jump to suspend the roller 450, so that the numerical value obtained by the distance sensor 400 is smaller than the actual numerical value, the setting of the compression spring 430 can enable the roller 450 rolling out from the pit to reset rapidly, and the detection precision is improved.

The implementation principle of the lime soil filling construction method in the embodiment of the application is as follows:

road mixer is when mix lime layer and plain soil layer, and first detection mechanism 310 is used for detecting the interval A between the upper surface on the plain soil layer after the compaction and the frame 120, and mixing device 200 mixes lime layer and plain soil layer, and second detection mechanism 320 is used for detecting the interval B between the upper surface on the plain soil layer after being invaded and the frame 120, and the hypothesis needs the degree of depth that mixing device 200 invaded the plain soil layer to be C. The difference between the distance A and the distance B is the actual depth of the mixing device 200 invading the plain soil layer, and the actual depth of the mixing device 200 invading the plain soil layer is compared with the actual depth C.

If the actual depth of the mixing device 200 invading the plain soil layer is greater than C, the first detection mechanism 310 and the second detection mechanism 320 simultaneously control the mixing device 200 to reduce the invasion amount of the mixing device 200 to the plain soil layer; if the actual depth of the mixing device 200 intruding into the plain soil layer is smaller than C, the first detection mechanism 310 and the second detection mechanism 320 control the mixing device 200 at the same time, so as to increase the intrusion amount of the mixing device 200 into the plain soil layer. In whole work progress, can constantly measure and adjust the degree of depth that the road mixer invaded plain soil layer, make the volume of being invaded of plain soil layer be close C all the time, the homogeneity of the plain soil layer degree of depth of invasion when having improved the mix.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.