An AMT clutch driven plate assembly break-in test device

Abstract

The present application relates to the field of clutch test, especially to an AMT clutch driven plate assembly running-in test device, comprising a base plate, a moving plate, a driving plate and the like; the base plate is connected with a moving unit; the moving unit is connected with the moving plate and the driving plate, and is used to drive the moving plate and the driving plate to move; the driving plate is located at the right side of the moving plate; the moving plate is slidingly connected with a sliding shaft sleeve; the sliding shaft sleeve is fixedly connected with a transmission shaft, and the transmission shaft penetrates through the moving plate and the driving plate; the base plate is connected with an axial loading unit for axial pressure loading. Through the reciprocating left and right movement of the transmission shaft, the sliding shaft sleeve and the running-in clamp continuously hit the AMT clutch driven plate assembly workpiece, so as to perform the axial pressure loading running-in test; and the running-in clamp one and the running-in clamp two are respectively in contact with the left side and the right side of the AMT clutch driven plate assembly workpiece, so as to realize the test function of combining the rotary loading running-in and the axial pressure loading running-in.

Description

Technical Field

[0001] This invention relates to the field of clutch testing, and more particularly to a break-in test device for an AMT clutch driven plate assembly. Background Technology

[0002] As a key component of power transmission, the AMT clutch driven plate assembly needs to undergo a break-in test before leaving the factory to eliminate micro-unevenness of the friction plates, stabilize the friction coefficient, ensure smooth engagement, avoid starting vibration, prevent early slippage that could lead to power transmission failure, and improve service life.

[0003] Existing AMT clutch driven plate assembly testing devices mainly rely on continuous rotational loading for break-in, which makes it difficult to reproduce the real working conditions of reciprocating linear / oscillating engagement and disengagement during vehicle start-up, gear shifting, and frequent start-stop. They lack real-time torque monitoring and closed-loop monitoring of engagement times, making it impossible to quantify the break-in effect. They also cannot take into account reciprocating working condition simulation, high-precision loading, multi-specification adaptation, and online monitoring, resulting in insufficient break-in, distorted test data, and restricting the consistency of AMT clutch driven plate assembly quality.

[0004] In summary, this application proposes an AMT clutch driven plate assembly break-in test device to improve the aforementioned technical problems. Summary of the Invention

[0005] In order to overcome the shortcomings of existing tests that are difficult to reproduce the real working conditions of vehicles, and that result in insufficient break-in and distorted test data, this invention provides a break-in test device for AMT clutch driven plate assembly.

[0006] The technical implementation scheme of the present invention is as follows: an AMT clutch driven plate assembly break-in test device, comprising a base plate; further comprising a movable plate; a movable unit connected to the base plate; the movable unit connected to the movable plate and a drive plate, the movable unit being used to drive the movable plate and the drive plate to move, the drive plate being located to the right of the movable plate; a sliding bushing slidably connected to the movable plate; a drive shaft fixedly connected to the sliding bushing, the drive shaft passing through the movable plate and the drive plate; an axial loading unit for axial pressure application connected to the base plate, the right end of the drive shaft being connected to the axial loading unit; a break-in fixture one fixedly connected to the sliding bushing; a fixed plate fixedly connected to the base plate; a rotating bushing rotatably connected to the fixed plate; a mounting shaft passing through the fixed plate fixedly connected to the rotating bushing; a rotating unit connected to the base plate, the rotating unit being connected to the mounting shaft, the rotating unit being used to drive the mounting shaft to rotate; a fixed bushing fixedly connected to the fixed plate; and a break-in fixture two fixedly connected to the fixed bushing.

[0007] This invention employs the above-described structure to achieve continuous impact on the AMT clutch driven disc assembly workpiece, thereby conducting an axial pressure loading break-in test.

[0008] More preferably, the moving unit includes a linear guide rail group one and a linear guide rail group two; the base plate is fixedly connected to two linear guide rail groups one, and both linear guide rail groups one are connected to the moving plate and the drive plate; the base plate and the fixed plate are jointly fixedly connected to linear guide rail group two, and linear guide rail group two is connected to the moving plate and the drive plate.

[0009] More preferably, the rotating unit includes a variable frequency motor; the variable frequency motor is fixedly connected to the base plate; a pulley one is fixedly connected to the output shaft of the variable frequency motor; a pulley two is fixedly connected to the mounting shaft; and a belt is drivingly connected to pulley one and pulley two.

[0010] More preferably, the axial loading unit includes a servo motor; a gantry is fixedly connected to the base plate; two linear guide rail groups three are fixedly connected to the gantry; the two linear guide rail groups three are connected to a U-shaped translation plate; the U-shaped translation plate is fixedly connected to two linear guide rail groups four; the two linear guide rail groups four are connected to a lifting plate; the lifting plate is rotatably connected to an eccentric bushing; the lifting plate is fixedly connected to a servo motor for driving the eccentric bushing to rotate; the eccentric bushing has an eccentric hole; a connecting shaft is installed at the eccentric hole; the connecting shaft is rotatably connected to a connecting rod; the connecting rod is rotatably connected to a connecting block, and the connecting block is rotatably connected to the right end of the transmission shaft.

[0011] By employing the above-described structure, this invention achieves the testing functions of both rotational loading and axial pressure loading running-in.

[0012] More preferably, it also includes an infusion tube one and an infusion tube two; both the sliding bushing and the fixed bushing are hollow structures; the sliding bushing is connected to the infusion tube one; the fixed bushing is connected to the infusion tube two, and the infusion tube one and the infusion tube two are connected to an external cooling mechanism.

[0013] By employing the above-described structure, this invention enables the flow of coolant into the sliding bushing and the fixed bushing, thereby cooling the high temperatures generated during the break-in test.

[0014] More preferably, a torque sensor is provided on the rotating bushing, and a pressure sensor is provided on the fixed plate.

[0015] More preferably, it also includes a first cover and a second cover; the movable plate is fixedly connected to the first cover, and the sliding bushing is located inside the first cover; the drive plate is fixedly connected to the second cover, and the fixed bushing is located inside the second cover.

[0016] More preferably, it also includes a conveying pipe and a spray pipe; the second casing is fixedly connected to the conveying pipe, and the conveying pipe is connected to an external sand conveying mechanism; the conveying pipe is connected to several spray pipes, and the spray pipes penetrate the second casing.

[0017] More preferably, it also includes spring pieces, protrusions, and inclined plates; several spring pieces are fixedly connected to the lower side of the sliding bushing, and the spring pieces have grooves; several protrusions corresponding to the positions of the spring pieces are fixedly connected to the cover; and several inclined plates are fixedly connected to the fixed bushing.

[0018] By employing the above-described structure, this invention simulates the use of an AMT clutch driven disc assembly in complex road conditions.

[0019] More preferably, the cover has a slot for insertion.

[0020] Compared with the prior art, the present invention has the following advantages: by reciprocating left and right movement of the drive shaft, the sliding bushing and the first running-in fixture are driven to continuously impact the AMT clutch driven plate assembly workpiece, thereby conducting an axial pressure loading running-in test; and by having the first and second running-in fixtures contact the left and right sides of the AMT clutch driven plate assembly workpiece respectively, the friction plates on the AMT clutch driven plate assembly workpiece are subjected to continuous rotational loading running-in, thereby realizing the test functions of both rotational loading running-in and axial pressure loading running-in, which can fully simulate the real working conditions of vehicle starting, shifting, and frequent start-stop, and realize closed-loop monitoring of real-time torque and engagement number during the test.

[0021] Coolant is introduced into the sliding bushing and the fixed bushing through infusion pipe one and infusion pipe two, thereby cooling the high temperature generated during the break-in test, controlling the temperature throughout the test, and reducing the impact of additional factors on the accuracy of the test data.

[0022] The sand is sprayed from the nozzle toward the AMT clutch driven disc assembly in the middle, and the moving plate is controlled simultaneously to continue the rotational loading and axial pressure loading running-in. The sand can accelerate the wear of the AMT clutch driven disc assembly, thereby simulating its use under complex road conditions. Attached Figure Description

[0023] Figure 1 This invention discloses a schematic diagram of the AMT clutch driven plate assembly break-in test device;

[0024] Figure 2 This is a schematic diagram of the front view structure disclosed in this invention;

[0025] Figure 3 This is a top view schematic diagram of the structure disclosed in this invention;

[0026] Figure 4 This is an exploded view of the connecting shaft and eccentric bushing disclosed in this invention;

[0027] Figure 5 This is a schematic diagram of the structure of the sliding bushing, transmission shaft and running-in fixture assembly disclosed in this invention.

[0028] Figure 6 This is a schematic diagram of the structure of the fixed plate, rotating bushing and fixed bushing assembly disclosed in this invention;

[0029] Figure 7 This is a schematic diagram of the structure of the running-in fixture and the housing assembly disclosed in this invention;

[0030] Figure 8 This is a schematic diagram of the internal structure of the casing disclosed in this invention.

[0031] The components in the attached diagram are labeled as follows: 1-Base plate, 2-Moving plate, 3-Drive plate, 4-Sliding bushing, 5-Transmission shaft, 6-Run-in fixture one, 7-Fixed plate, 8-Rotating bushing, 9-Fixed bushing, 10-Run-in fixture two, 101-Linear guide rail assembly one, 102-Linear guide rail assembly two, 103-Variable frequency motor, 104-Pulley one, 105-Belt, 106-Pulley two, 111-Infusion tube one, 112-Infusion tube two, 120-Servo motor, 121 - Gantry, 122- Linear guide rail group three, 123- Recurved sliding plate, 124- Linear guide rail group four, 125- Lifting plate, 126- Eccentric bushing, 127- Connecting shaft, 128- Connecting rod, 129- Connecting block, 201- Cover one, 202- Cover two, 203- Conveying pipe, 204- Nozzle, 211- Spring piece, 212- Protrusion, 213- Inclined plate, 81- Mounting shaft, 12601- Eccentric hole, 20101- Insertion groove, 21101- Groove. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Example 1: A break-in test device for an AMT clutch driven plate assembly, referring to... Figures 1-8As shown, the system includes a base plate 1 and a movable plate 2. A movable unit is connected to the base plate 1. The movable unit is connected to the movable plate 2 and a drive plate 3, and is used to move the movable plate 2 and the drive plate 3. The drive plate 3 is located to the right of the movable plate 2. A sliding bushing 4 is slidably connected to the movable plate 2. A transmission shaft 5 is fixedly connected to the sliding bushing 4, and the transmission shaft 5 passes through the movable plate 2 and the drive plate 3. An axial loading unit is connected to the base plate 1, which is used for axial pressure, and the right end of the transmission shaft 5... It is connected to the axial loading unit; a running-in fixture 6 is fixedly connected to the sliding bushing 4; a fixed plate 7 is fixedly connected to the base plate 1; a rotating bushing 8 is rotatably connected to the fixed plate 7; an installation shaft 81 is fixedly connected to the rotating bushing 8, and the installation shaft 81 passes through the fixed plate 7; a rotating unit is connected to the base plate 1, and the rotating unit is used to drive the installation shaft 81 to rotate; a fixed bushing 9 is fixedly connected to the fixed plate 7; a running-in fixture 10 is fixedly connected to the fixed bushing 9.

[0034] The moving unit includes a linear guide rail assembly 101 and a linear guide rail assembly 102; the base plate 1 is fixedly connected to two linear guide rail assemblies 101, and both linear guide rail assemblies 101 are connected to the moving plate 2 and the drive plate 3; the base plate 1 and the fixed plate 7 are jointly fixedly connected to the linear guide rail assembly 102, and the linear guide rail assembly 102 is connected to the moving plate 2 and the drive plate 3.

[0035] The rotating unit includes a variable frequency motor 103, a pulley 104, a belt 105, and a pulley 2 106; the variable frequency motor 103 is fixedly connected to the base plate 1; the output shaft of the variable frequency motor 103 is fixedly connected to the pulley 104; the mounting shaft 81 is fixedly connected to the pulley 2 106; the belt 105 is drivingly connected to the pulley 104 and the pulley 2 106.

[0036] The axial loading unit includes a servo motor 120, a gantry 121, a linear guide rail assembly three 122, a loop-shaped translation plate 123, a linear guide rail assembly four 124, a lifting plate 125, an eccentric bushing 126, a connecting shaft 127, a connecting rod 128, and a connecting block 129; the base plate 1 is fixedly connected to the gantry 121; the gantry 121 is fixedly connected to two linear guide rail assemblies three 122; the two linear guide rail assemblies three 122 are connected to a loop-shaped translation plate 123; the loop-shaped translation plate 123 is fixedly connected to two linear guide rail assemblies four 124; the two The linear guide rail assembly 4 124 is connected to a lifting plate 125; the lifting plate 125 is rotatably connected to an eccentric bushing 126; the lifting plate 125 is fixedly connected to a servo motor 120, and the output part of the servo motor 120 is fixedly connected to the eccentric bushing 126; the eccentric bushing 126 has an eccentric hole 12601; a connecting shaft 127 is installed at the eccentric hole 12601; the connecting shaft 127 is rotatably connected to a connecting rod 128; the connecting rod 128 is rotatably connected to a connecting block 129, and the connecting block 129 is rotatably connected to the right end of the transmission shaft 5.

[0037] It also includes infusion tube 111 and infusion tube 212; both sliding bushing 4 and fixed bushing 9 are hollow structures; sliding bushing 4 is connected to infusion tube 111; fixed bushing 9 is connected to infusion tube 212, and infusion tube 111 and infusion tube 212 are connected to an external cooling mechanism.

[0038] A torque sensor is installed on the rotating bushing 8, and a pressure sensor is installed on the fixed plate 7, which can monitor the transmission torque on the rotating bushing 8 and the positive pressure on the fixed plate 7 in real time.

[0039] First, the worker installs the AMT clutch driven disc assembly on the mounting shaft 81 and fixes it to the right side of the rotating bushing 8, so that the left side of the AMT clutch driven disc assembly contacts the running-in fixture 10 on the fixed bushing 9. Then, the linear guide group 122 is controlled to drive the horizontal movement of the return-shaped translation plate 123, and the linear guide group 124 is controlled to drive the vertical movement of the lifting plate 125, so that the connecting shaft 127 and connecting rod 128 on the eccentric bushing 126 are horizontally aligned with the transmission shaft 5. Then, the linear guide group 101 and the linear guide group 102 are controlled to move the moving plate 2 and the drive plate 3 to the left synchronously. The moving plate 2 drives the running-in fixture 6 on the sliding bushing 4 to move closer to the right side of the AMT clutch driven disc assembly, so that the sliding bushing 4 contacts the AMT clutch driven disc assembly. The AMT clutch driven plate assembly is concentric. Then, the servo motor 120 drives the eccentric bushing 126 to rotate. The eccentric bushing 126 drives the connecting shaft 127 and connecting rod 128 to reciprocate, thereby driving the transmission shaft 5 and sliding bushing 4 to reciprocate left and right movements. During this movement, the drive plate 3 restricts the transmission shaft 5, ensuring that it remains concentric with the AMT clutch driven plate assembly. The reciprocating left and right movement of the transmission shaft 5 causes the sliding bushing 4 and the running-in fixture 6 to continuously impact the AMT clutch driven plate assembly, thus conducting an axial pressure loading running-in test. The torque sensor and the pressure sensor on the fixed plate 7 are used to detect and measure the transmission torque and normal pressure during the test in real time.

[0040] Furthermore, during the test, the variable frequency motor 103 is simultaneously controlled to drive pulley 104 to rotate. Pulley 104 drives the rotating bushing 8 and the fixed AMT clutch driven disc assembly workpiece to rotate through belt 105, pulley 106 and mounting shaft 81. At this time, running-in fixture 6 and running-in fixture 10 contact the left and right sides of the AMT clutch driven disc assembly workpiece, respectively, to continuously rotate and load the friction plates on the AMT clutch driven disc assembly workpiece, thereby realizing the test function of both rotational loading running-in and axial pressure loading running-in, fully simulating the real working conditions of reciprocating linear / oscillating engagement and disengagement during vehicle start-up, gear shifting, and frequent start-stop, and realizing closed-loop monitoring of real torque, displacement, and engagement number during the test.

[0041] Meanwhile, during the test, an external cooling mechanism is used to supply coolant into the sliding bushing 4 and the fixed bushing 9 via the first infusion pipe 111 and the second infusion pipe 112, respectively. This cools the high temperature generated during the break-in test, controls the temperature throughout the test, and reduces the impact of additional factors on the accuracy of the test data.

[0042] Example 2: Based on Example 1, referring to... Figures 6-8 As shown, it also includes a first cover 201 and a second cover 202; the movable plate 2 is fixedly connected to the first cover 201, and the sliding bushing 4 is located inside the first cover 201; the drive plate 3 is fixedly connected to the second cover 202, and the fixed bushing 9 is located inside the second cover 202.

[0043] It also includes a conveying pipe 203 and a nozzle 204; the second cover 202 is fixedly connected to the conveying pipe 203, and the conveying pipe 203 is connected to the external sand conveying mechanism; the conveying pipe 203 is connected to several nozzles 204, and the nozzles 204 penetrate the second cover 202.

[0044] It also includes a spring piece 211, a protrusion 212 and a sloping plate 213; several spring pieces 211 are fixedly connected to the lower side of the sliding bushing 4, and the spring pieces 211 have grooves 21101; several protrusions 212 are fixedly connected to the cover 201, and the positions of the protrusions 212 correspond to the positions of the spring pieces 211; several sloping plates 213 are fixedly connected to the fixed bushing 9.

[0045] The cover 201 has a insertion groove 20101, which allows the cover 201 and the cover 202 to be combined, with the cover 202 entering the insertion groove 20101, thus improving the overall sealing effect.

[0046] Based on the above embodiment 1, for some AMT clutch driven disc assembly workpieces of poor quality, during the test, the workpiece may crack or have fragments scattered. Therefore, when the moving plate 2 moves to the left and the running-in fixture 6 is in contact with the right side of the workpiece, the cover 201 moves to the left and contacts the cover 202. The cover 201 and the cover 202 form a closed space to isolate the AMT clutch driven disc assembly workpiece, thereby reducing accidents during the test and improving overall safety. In addition, the cover 202 is inserted into the insertion groove 20101 to improve the overall sealing effect.

[0047] After completing the initial rotary loading and axial pressure loading tests, the wear condition of the workpiece is checked to evaluate its basic performance indicators. To further simulate the usage under complex road conditions, a sand test can be conducted to further accelerate the wear. In order to further test its performance indicators under complex road conditions, after the initial test, the external sand conveying mechanism is controlled to introduce sand into the conveying pipe 203 and spray it out of the AMT clutch driven disc assembly workpiece in the middle through the nozzle 204. At the same time, the moving plate 2 is controlled to continue the rotary loading and axial pressure loading tests. The sand can accelerate the wear of the AMT clutch driven disc assembly workpiece, thereby simulating its usage under complex road conditions. After the test is completed, the control cover 1 201 and cover 2 202 are separated, and the sand on the workpiece can be cleaned using equipment such as a spray gun, and then its wear condition is checked.

[0048] Considering that most of the sand falls directly during the test and is difficult to break in, during the axial pressure load break-in process, when the sliding bushing 4 moves back and forth, it simultaneously drives the spring 211 to move back and forth. The spring 211 pushes the sand that has fallen below, and when it passes the protrusion 212 during its reciprocating movement, the spring 211 deforms and stores force. After passing the protrusion 212, the spring 211 returns to its original position and bounces the sand to the left, so that the sand contacts the left inclined plate 213 and moves upward under the guidance of the inclined plate 213, bouncing the sand between the AMT clutch driven plate assembly and the break-in fixture 6, so that the sand participates in the break-in test and fully detects the wear of the AMT clutch driven plate assembly to evaluate its performance indicators.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A break-in test device for an AMT clutch driven plate assembly, comprising a base plate (1); characterized in that, It also includes a movable plate (2); a base plate (1) is connected to a movable unit; the movable unit is connected to the movable plate (2) and the drive plate (3), the movable unit is used to drive the movable plate (2) and the drive plate (3) to move, the drive plate (3) is located to the right of the movable plate (2); the movable plate (2) is slidably connected to a sliding bushing (4); the sliding bushing (4) is fixedly connected to a transmission shaft (5), and the transmission shaft (5) passes through the movable plate (2) and the drive plate (3); the base plate (1) is connected to an axial loading unit for axial pressure, and the transmission shaft (5) is to the right of the drive plate (2). The end is connected to the axial loading unit; the sliding bushing (4) is fixedly connected to the first running-in fixture (6); the base plate (1) is fixedly connected to the fixed plate (7); the fixed plate (7) is rotatably connected to the rotating bushing (8); the rotating bushing (8) is fixedly connected to the mounting shaft (81) that passes through the fixed plate (7); the base plate (1) is connected to the rotating unit, and the rotating unit is connected to the mounting shaft (81), the rotating unit is used to drive the mounting shaft (81) to rotate; the fixed plate (7) is fixedly connected to the fixed bushing (9); the fixed bushing (9) is fixedly connected to the second running-in fixture (10).

2. The AMT clutch driven plate assembly break-in test device according to claim 1, characterized in that, The moving unit includes a linear guide rail group one (101) and a linear guide rail group two (102); the base plate (1) is fixedly connected to two linear guide rail groups one (101), and both linear guide rail groups one (101) are connected to the moving plate (2) and the driving plate (3); the base plate (1) and the fixed plate (7) are jointly fixedly connected to linear guide rail group two (102), and linear guide rail group two (102) is connected to the moving plate (2) and the driving plate (3).

3. The AMT clutch driven plate assembly break-in test device according to claim 1, characterized in that, The rotating unit includes a variable frequency motor (103); the variable frequency motor (103) is fixedly connected to the base plate (1); the output shaft of the variable frequency motor (103) is fixedly connected to a pulley one (104); the mounting shaft (81) is fixedly connected to a pulley two (106); and a belt (105) is connected to the pulley one (104) and pulley two (106) for transmission.

4. The AMT clutch driven plate assembly break-in test device according to claim 1, characterized in that, The axial loading unit includes a servo motor (120); a gantry (121) is fixedly connected to the base plate (1); two linear guide rail groups (122) are fixedly connected to the gantry (121); the two linear guide rail groups (122) are connected to a spiral translation plate (123); the spiral translation plate (123) is fixedly connected to two linear guide rail groups (124); the two linear guide rail groups (124) are connected to a lifting plate (125); the lifting plate (125) is rotatably connected to... There is an eccentric bushing (126); a servo motor (120) for driving the eccentric bushing (126) to rotate is fixedly connected to the lifting plate (125); the eccentric bushing (126) has an eccentric hole (12601); a connecting shaft (127) is installed at the eccentric hole (12601); the connecting shaft (127) is rotatably connected to a connecting rod (128); the connecting rod (128) is rotatably connected to a connecting block (129), and the connecting block (129) is rotatably connected to the right end of the transmission shaft (5).

5. The AMT clutch driven plate assembly break-in test device according to claim 1, characterized in that, It also includes infusion tube one (111) and infusion tube two (112); the sliding bushing (4) and the fixed bushing (9) are both hollow structures; the sliding bushing (4) is connected to infusion tube one (111); the fixed bushing (9) is connected to infusion tube two (112), and infusion tube one (111) and infusion tube two (112) are connected to an external cooling mechanism.

6. The AMT clutch driven plate assembly break-in test device according to claim 1, characterized in that, A torque sensor is provided on the rotating bushing (8), and a pressure sensor is provided on the fixed plate (7).

7. The AMT clutch driven plate assembly break-in test device according to claim 5, characterized in that, It also includes a first cover (201) and a second cover (202); the movable plate (2) is fixedly connected to the first cover (201), and the sliding bushing (4) is located inside the first cover (201); the drive plate (3) is fixedly connected to the second cover (202), and the fixed bushing (9) is located inside the second cover (202).

8. The AMT clutch driven plate assembly break-in test device according to claim 7, characterized in that, It also includes a conveying pipe (203) and a nozzle (204); the second casing (202) is fixedly connected to the conveying pipe (203), and the conveying pipe (203) is connected to the external sand conveying mechanism; the conveying pipe (203) is connected to several nozzles (204), and the nozzles (204) penetrate the second casing (202).

9. The AMT clutch driven plate assembly break-in test device according to claim 7, characterized in that, It also includes a spring sheet (211), a protrusion (212) and a ramp (213); a number of spring sheets (211) are fixedly connected to the lower side of the sliding bushing (4), and the spring sheets (211) have grooves (21101); a cover (201) is fixedly connected to a number of protrusions (212) whose positions correspond to the positions of the spring sheets (211); a fixed bushing (9) is fixedly connected to a number of ramps (213).

10. The AMT clutch driven plate assembly break-in test device according to claim 7, characterized in that, The cover (201) has a plug slot (20101).

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