1. The utility model provides a rotatory test bench that twists reverse of mechanically enclosed bumper shock absorber, include that the inner chamber installs base support (1) of motor (2) and set up in rotatory torque exciter (3) on base support (1), its characterized in that, the axle center department of rotatory torque exciter (3) rotates and is connected with torsion shaft (38) and overlaps the rotatory jar (37) of establishing its outer rampart, rotatory jar (37) will torsion shaft (38) seal in its inner chamber and form the oil pressure cavity between the two, motor (2) through hold-in range (24) with rotatory jar (37) transmission is connected, rotatory jar (37) are connected with frock flange (7) through first outer axle (41) and second outer axle (42), frock flange (7) realize dismantling with the friction ring of test piece (71) outer lane and be connected, the one end of torsion shaft (38) through interior major axis (4) with test piece (71) inner circle realizes dismantling the connection, and the outer annular wall of the inner long shaft (4) is also sleeved with a torque sensor (6).

2. The mechanically-enclosed shock absorber rotation and torsion test bench according to claim 1, wherein a supporting bottom plate (11) is disposed on the top surface of the base support (1), shock absorber supports (12) are disposed on four end corners of the bottom surface of the base support (1), and a plurality of through holes for heat dissipation and ventilation are further formed in the side wall of the base support (1).

3. The mechanically-enclosed shock absorber rotation torsion test bench according to claim 2, wherein the motor (2) is installed in the base bracket (1) through a motor base (21) arranged at a lower end of the motor (2), a first tripod (25) is arranged at a position, corresponding to an output end of the motor (2), on a top surface of the motor base (21), a first encoder (23) is arranged at an end of the first tripod (25), a driving pulley (26) and a first coupler (22) are sequentially sleeved and arranged at an output end of the motor (2), and the first coupler (22) is rotatably connected with the first encoder (23).

4. The rotary torsion test bench for the mechanically closed shock absorber according to claim 3, characterized in that the rotary torque exciter (3) is arranged on the top surface of the supporting bottom plate (11) through two mounting supports (31) which are arranged in mirror symmetry on both sides of the rotary torque exciter, the top end of the rotating torque exciter (3) is provided with an electro-hydraulic servo valve (32) communicated with an oil pressure cavity inside the rotating torque exciter, one end of the torsion shaft (38) opposite to the inner long shaft (4) is connected with a second coupling (34), a second tripod (36) is arranged on the top surface of the supporting base plate (11) corresponding to the second coupling (34), a second encoder (35) is arranged at the top end of the second tripod (36), the second coupling (34) is rotationally connected with the second encoder (35), and a transparent protective cover (33) is also arranged between the tripod II (36) and the two mounting supports (31).

5. The mechanically closed type damper rotation and torsion test bench according to claim 4, wherein the outer annular wall of the rotating cylinder (37) is sleeved with a driven pulley (39), the driven pulley (39) is vertically parallel to the driving pulley (26), and the driven pulley and the driving pulley are in transmission connection through the synchronous belt (24).

6. The mechanically closed type damper rotation and torsion test bench according to claim 5, wherein a spline shaft (43) is fixedly sleeved on one end of the inner long shaft (4) opposite to the torsion shaft (38) and penetrates through the first outer shaft (41), the torque sensor (6), the second outer shaft (42) and the tooling flange (7), the outer annular walls of the first outer shaft (41) and the second outer shaft (42) are respectively rotatably sleeved with a first bearing seat (5) and a second bearing seat (51) which have a supporting function, the top ends of the first bearing seat (5) and the second bearing seat (51) are respectively provided with a temperature sensor (52), and the first outer shaft (41) is fixedly connected with the second outer shaft (42) through the inner ring of the torque sensor (6).

7. The mechanically closed type damper rotation and torsion test bench according to claim 6, wherein the tool flange (7) is detachably connected with a test piece (71) through a plurality of bolts, and the test piece (71) is connected with the spline shaft (43) through a spline shaft hole at the shaft center of the test piece.

8. The mechanically closed type damper rotation and torsion test bench according to claim 7, wherein a test piece box (8) with an observation window is sleeved outside the tool flange (7), the test piece box (8) can spray oil to a test piece (71) through an oil spraying device, and the side wall of the test piece box (8) can be opened.

Background

The torsional vibration damper is an important element in the automobile clutch, mainly comprises an elastic element, a damping element and the like, can reduce the torsional rigidity of a joint part of an engine crankshaft and a transmission system, thereby reducing the natural frequency of torsional vibration of the transmission system, simultaneously increasing the torsional damping of the transmission system, inhibiting the corresponding amplitude of torsional resonance, attenuating transient torsional vibration generated due to impact, controlling the torsional vibration of the clutch and a transmission shafting when a power transmission assembly is in idling, eliminating the idling noise of the transmission, the torsional vibration and the noise of a main speed reducer and the transmission, relieving the torsional impact load of the transmission system under an unstable working condition and improving the joint smoothness of the clutch.

After the torsion damper is produced, the performance of the damper needs to be tested, the test mainly comprises two aspects, on one hand, the rotation frequency of the outer ring friction ring of the damper, namely the rotation reliability, is tested, on the other hand, the torsion frequency and the angle of the driven disc hub inside the damper are tested, the existing damper test bench can only test one of the two aspects, the driven disc hub inside the friction ring cannot be subjected to torsion test in the rotation process of the friction ring, the strict requirement of the torsion damper test cannot be met, and the improvement of the overall damping performance of an automobile is not facilitated.

Disclosure of Invention

In order to overcome the technical problems, the invention aims to provide a rotating and twisting test bench for a mechanically closed shock absorber.

The purpose of the invention can be realized by the following technical scheme:

the utility model provides a rotatory test bench that twists reverse of mechanically enclosed bumper shock absorber, includes that the inner chamber installs the base support of motor and set up in the rotatory moment of torsion exciter on the base support, the axle center department of rotatory moment of torsion exciter rotates and is connected with the axis of torsion and the rotatory jar of cover at its outer rampart, rotatory jar will the axis of torsion seals in its inner chamber and forms the oil pressure cavity between the two, the motor pass through the hold-in range with rotatory jar transmission is connected, rotatory jar is connected with the frock flange through first outer axle and second outer axle, the frock flange realizes dismantling with the friction ring of test piece outer lane and is connected, the one end of axis of torsion through interior major axis with the spline shaft hole realization of test piece inner circle is dismantled and is connected, the outer rampart of interior major axis still cup joints and is provided with.

The base support is characterized in that a supporting bottom plate is arranged on the top surface of the base support, shock absorber supports are arranged at four end corners of the bottom surface of the base support, and a plurality of through holes used for heat dissipation and ventilation are further formed in the side wall of the base support.

The motor is further arranged in the base support through a motor base arranged at the lower end of the motor, a first tripod is arranged at the position, corresponding to the output end of the motor, of the top surface of the motor base, a first encoder is arranged at the end part of the first tripod, a first driving belt wheel and a first coupler are sequentially sleeved at the output end of the motor, and the first coupler is rotationally connected with the first encoder.

The rotary torque exciter is installed on the top surface of the supporting base plate through two installation supports arranged in mirror symmetry on two sides of the rotary torque exciter, an electro-hydraulic servo valve communicated with an oil pressure cavity inside the rotary torque exciter is arranged on the top end of the rotary torque exciter, one end, opposite to the inner long shaft, of the torsion shaft is connected with a second shaft coupler, the top surface of the supporting base plate corresponds to the position of the second shaft coupler, a second tripod is arranged, the top end of the second tripod is provided with a second encoder, the second shaft coupler is connected with the second encoder in a rotating mode, and a transparent protective cover is further arranged between the two installation supports.

The outer ring wall of the rotating cylinder is sleeved with a driven belt wheel, the driven belt wheel is vertically parallel to the driving belt wheel, and the driven belt wheel and the driving belt wheel are in transmission connection through the synchronous belt.

The torsion shaft is fixedly connected with the first outer shaft, the torque sensor, the second outer shaft and the tooling flange through the inner long shaft, a spline shaft is fixedly sleeved on the inner long shaft through the end opposite to the torsion shaft, a first bearing seat and a second bearing seat which have supporting functions are respectively sleeved on the outer ring wall of the first outer shaft and the outer ring wall of the second outer shaft in a rotating mode, temperature sensors are arranged at the top ends of the first bearing seat and the second bearing seat, and the first outer shaft is fixedly connected with the second outer shaft through the inner ring of the torque sensor.

The tool flange is detachably connected with the test piece through a plurality of bolts, and the test piece is connected with the spline shaft through a spline shaft hole in the axis of the test piece.

The tool flange is characterized in that a test piece box with an observation window is sleeved outside the tool flange, the test piece box can spray oil to a test piece through an oil spraying device, and the side wall of the test piece box can be opened.

The invention has the beneficial effects that:

1. the friction plate of the outer ring of the test piece is finally rotated by using the motor to drive the rotating cylinder, and then the central shaft and the torsion shaft are driven by the electro-hydraulic servo valve to enable the inner ring of the test piece to generate the leading and lagging cyclic torsional vibration relative to the outer ring, so that the leading and lagging phase torsional vibration of the inner ring and the outer ring of the test piece is realized when the test piece rotates at a high speed, the torque performance of a driven hub of the inner ring of the test piece is tested in the rotating process of the friction plate, the severe requirement of the shock absorber test is met, and the improvement of the shock absorption performance of an automobile on various road conditions is facilitated;

2. test piece case wraps up test piece and frock flange completely, through heating or cooling or spout into lubricating oil for test piece incasement portion, realizes that the test piece is experimental under different operating mode, all installs the encoder through the output at the motor and the torsion shaft department of rotatory torque exciter, through adding the subtraction to two encoder gained data at the rotation in-process, obtains the test data of the torsional vibration angle of test piece inner circle for outer lane friction ring, improves the accuracy of bumper shock absorber test data.

3. Through installing temperature sensor on the bearing frame, the temperature of when can real-time supervision equipment operation prevents that equipment from overheating to damage, improves the reliability and the stability of equipment operation.

Drawings

The invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic side view of the present invention;

FIG. 3 is a top view of the present invention;

FIG. 4 is a schematic cross-sectional view taken along line A-A of FIG. 3;

FIG. 5 is an enlarged view of a portion of FIG. 4 at A;

FIG. 6 is a schematic cross-sectional view of the present invention;

FIG. 7 is a partial enlarged view at B in FIG. 6;

FIG. 8 is an enlarged view of a portion of FIG. 6 at C;

fig. 9 is a partial enlarged view at D in fig. 6.

In the figure: 1. a base support; 11. a support base plate; 12. a shock absorber support; 2. a motor; 21. a motor base; 22. a first coupler; 23. a first encoder; 24. a synchronous belt; 25. a first tripod; 26. a driving pulley; 3. a rotational torque actuator; 31. mounting a support; 32. an electro-hydraulic servo valve; 33. a protective cover; 34. a second coupler; 35. a second encoder; 36. a tripod II; 37. a rotating cylinder; 38. a torsion shaft; 39. a driven pulley; 4. an inner major axis; 41. a first outer shaft; 42. a second outer shaft; 43. a spline shaft; 5. a first bearing seat; 51. a second bearing seat; 52. a temperature sensor; 6. a torque sensor; 7. a tooling flange; 71. a test piece; 8. and (5) a test piece box.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, the overall structure of a mechanically closed shock absorber rotation torsion test bench according to the present invention is schematically illustrated, in the actual production process, a closed shell is sleeved from the top surface of the support base plate 11 to the outside of the test piece box 8, so as to prevent the first outer shaft 41 and the second outer shaft 42 from contacting with personnel during the rotation process, thereby improving the safety during the test process, meanwhile, the test bench can generate large vibration during the operation process, the noise and the influence on the test site during the test process are reduced by arranging a plurality of shock absorber supports 12 on the bottom surface of the base support 1, a servo hydraulic system for providing hydraulic power for the electro-hydraulic servo valve 32 and an ATF oil injection system for continuously injecting oil to the test piece 71 in the test piece box 8 are arranged beside the test bench, and the plurality of systems are controlled by an electrical control and data acquisition and analysis software system, the whole function is realized and the safe and effective operation of the experimental process is ensured.

As shown in fig. 1 and 4, a rotating torsion test bench for a mechanically closed shock absorber comprises a base support 1 with an inner cavity provided with a motor 2 and a rotating torque exciter 3 arranged on the base support 1, wherein the axis of the rotating torque exciter 3 is rotatably connected with a torsion shaft 38 and a rotating cylinder 37 sleeved on the outer annular wall of the torsion shaft 38, the rotating cylinder 37 seals the torsion shaft 38 in the inner cavity thereof and forms an oil pressure cavity therebetween, the motor 2 is in transmission connection with the rotating cylinder 37 through a synchronous belt 24, as shown in fig. 5, the rotary cylinder 37 is connected to the tool flange 7 through the first outer shaft 41 and the second outer shaft 42, the tool flange 7 is detachably connected to a friction ring of an outer ring of the test piece 71, one end of the torsion shaft 38 is detachably connected to a spline shaft hole of an inner ring of the test piece 71 through the inner long shaft 4, and the outer ring wall of the inner long shaft 4 is further sleeved with the torque sensor 6.

Based on the above technical scheme, after the device is operated, the motor 2 is used to drive the rotary cylinder 37 to finally rotate the friction ring of the outer ring of the test piece 71, and then the electrohydraulic servo valve 32 is used to drive the inner long shaft 4 to finally make the inner ring of the test piece 71 generate the leading and lagging cyclic torsional vibration relative to the outer ring, so that when the test piece 71 rotates at a high speed, the leading and lagging phase torsional vibrations of the inner ring and the outer ring of the test piece 71 are generated, the torque performance of the driven hub of the inner ring of the test piece 71 is tested in the process of rotation of the friction ring, the harsh requirement of the shock absorber test is met, the shock absorption performance of the automobile on various road conditions is improved, meanwhile, in order to ensure that the test piece 71 is in a real test environment, the test piece 71 and the tool flange 7 are completely wrapped by using the test piece box 8, and then lubricating oil is heated or cooled or sprayed into the test piece box 8, so that the test of the test piece 71 under different working conditions is realized, install encoder 23 and encoder two 35 respectively through the output at motor 2 and the torsion shaft 38 punishment of rotatory moment of torsion exciter 3, add and subtract through the gained data of two encoders at the rotation in-process, obtain test piece 71 inner circle for the test data of the torsional vibration angle of outer lane friction ring, improve the accuracy of bumper shock absorber test data, through all installing temperature sensor 52 on bearing frame one 5 and bearing frame two 51, the temperature in the time of can real-time supervision equipment operation, prevent the overheated damage of equipment, the reliability and the stability of improve equipment operation.

As shown in fig. 2, a supporting bottom plate 11 is disposed on the top surface of the base bracket 1, damper supports 12 are disposed at four end corners of the bottom surface of the base bracket 1, and a plurality of through holes for heat dissipation and ventilation are further formed in the side wall of the base bracket 1. In view of the fact that the test bench can generate large vibration in the experimental process, in order to avoid rigid contact between the test bench and a test site, vibration transmitted by the test bench is weakened through the shock absorber support 12, and the influence of the test bench on other equipment in the experimental process is reduced.

As shown in fig. 4 and 7, the motor 2 is installed in the base bracket 1 through a motor base 21 arranged at the lower end of the motor 2, a tripod i 25 is arranged at the position, corresponding to the output end of the motor 2, on the top surface of the motor base 21, an encoder i 23 is arranged at the end part of the tripod i 25, a driving pulley 26 and a coupling i 22 are sequentially sleeved at the output end of the motor 2, and the coupling i 22 is rotatably connected with the encoder i 23. When the test piece 71 is placed, the motor 2 can be started, the output end of the motor 2 drives the coupling I22 and the driving belt wheel 26 which are connected with the motor to rotate together, and the encoder I23 can monitor the rotating speed and the angle output by the motor 2 in real time.

As shown in fig. 3 and 4, the rotary torque exciter 3 is mounted on the top surface of the supporting base plate 11 through two mounting supports 31 whose two sides are arranged in mirror symmetry, the top end of the rotary torque exciter 3 is provided with an electro-hydraulic servo valve 32 communicated with an oil pressure cavity inside the rotary torque exciter 3, one end of the torsion shaft 38 opposite to the inner long shaft 4 is connected with a second coupling 34, the top surface of the supporting base plate 11 is provided with a second tripod 36 corresponding to the second coupling 34, the top end of the second tripod 36 is provided with a second encoder 35, the second coupling 34 is rotatably connected with the second encoder 35, a transparent protective cover 33 is further arranged between the second tripod 36 and the two mounting supports 31, as shown in fig. 4 and 9, the outer annular wall of the rotary cylinder 37 is sleeved with a driven pulley 39, the driven pulley 39 is vertically parallel to the driving pulley 26, and the driven pulley is in transmission connection through a synchronous belt 24. After the motor 2 is started, the driving pulley 26 drives the driven pulley 39 to rotate through the synchronous belt 24, the driven pulley 39 is sleeved outside the rotating cylinder 37, so that the rotating cylinder 37 also rotates, in the process, the hydraulic oil is input to different sides of an oil pressure cavity between the rotating cylinder 37 and the torsion shaft 38 through the electro-hydraulic servo valve 32, so that the torsion shaft 38 can generate phase torsional vibration which is advanced and delayed relative to the rotating cylinder 37 in the process that the torsion shaft 38 rotates along with the rotating cylinder 37, meanwhile, one end of the torsion shaft 38 is connected with the second encoder 35 through the second coupler 34, so that the torque output by the torsion shaft 38 can be monitored in real time, and then the torque rotation speed difference required by the shock absorber test can be obtained through calculation of data obtained by the first encoder 23 and the second encoder 35.

As shown in fig. 4 and 5, a spline shaft 43 is fixedly sleeved on the end of the inner long shaft 4 opposite to the torsion shaft 38, which penetrates through the first outer shaft 41, the torque sensor 6, the second outer shaft 42 and the tooling flange 7, the outer annular walls of the first outer shaft 41 and the second outer shaft 42 are respectively rotatably sleeved with a bearing seat i 5 and a bearing seat ii 51 for supporting, the top ends of the bearing seat i 5 and the bearing seat ii 51 are both provided with a temperature sensor 52, and the first outer shaft 41 is fixedly connected with the second outer shaft 42 through the inner ring of the torque sensor 6. Since the rotary cylinder 37 is connected to the tooling flange 7 through the first outer shaft 41, the inner ring of the torque sensor 6 and the second outer shaft 42, when the rotary cylinder 37 rotates, the first outer shaft 41 drives the inner ring of the torque sensor 6 to rotate, the inner ring of the torque sensor 6 drives the second outer shaft 42 connected with the inner ring to synchronously rotate, and finally transmits the torque transmitted by the rotating cylinder 37 to the outer ring of the test piece 71 on the tool flange 7, the corresponding relation between the torsional vibration angle and the torque required by the damper test can be obtained through the torsional vibration angle data obtained by the first encoder 23 and the second encoder 35 and the torque data obtained by the torque sensor 6, in the process, the temperature sensors 52 arranged at the end parts of the bearing seat I5 and the bearing seat II 51 monitor the temperature of the first outer shaft 41 and the second outer shaft 42 in real time, so that the overheating accidents of the bearing seat I and the bearing seat II in the rotating process are avoided.

As shown in fig. 6 and 8, the tool flange 7 is detachably connected with the test piece 71 through a plurality of bolts, the test piece 71 is connected with the spline shaft 43 through a spline shaft hole at the axis of the test piece 71, as shown in fig. 6, the test piece box 8 with an observation window is sleeved outside the tool flange 7, the test piece box 8 can spray oil to the test piece 71 through an oil spraying device, and the side wall of the test piece box 8 can be opened. The torque transmitted by the torsion shaft 38 is transmitted to the spline shaft 43 through the inner long shaft 4, and the spline shaft 43 applies leading or lagging phase torsional vibration to the inner ring of the test piece 71, so that when the friction ring on the outer ring of the test piece 71 rotates, the driven hub of the inner ring of the test piece 71 realizes circulating torsion at a certain angle relative to the friction ring, the design purpose of the device is realized, the performance of the shock absorber in a real use environment is inspected through continuously spraying oil onto the test piece 71, and reliable test data are obtained.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is illustrative and explanatory only and is not intended to be exhaustive or to limit the invention to the precise embodiments described, and various modifications, additions, and substitutions may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.