CN210037215U

CN210037215U - Torsion endurance constant torque testing machine for automobile dry friction type clutch driven disc assembly

Info

Publication number: CN210037215U
Application number: CN201920356102.5U
Authority: CN
Inventors: 谢茂青; 陈锡伟; 陈杰; 程玉君; 繆张芬; 胡城杰; 张文良; 凌鹏; 周兴田; 徐国良
Original assignee: Zhejiang Tieliu Clutch Co ltd
Current assignee: Zhejiang Tieliu Clutch Co ltd
Priority date: 2019-03-20
Filing date: 2019-03-20
Publication date: 2020-02-07
Anticipated expiration: 2029-03-20

Abstract

The utility model discloses a torsion endurance constant torque testing machine for a dry friction type clutch driven disc assembly for an automobile, which mainly comprises a frame, a driving mechanism, a manual driving loading mechanism, a torsion mechanism, a compensation mechanism and an aligning mechanism, wherein the driving mechanism, the manual driving loading mechanism, the torsion mechanism and the aligning compensation mechanism are respectively fixed on the frame, and the aligning mechanism is fixed on the torsion mechanism; the machine base is provided with a machine frame, the variable frequency motor is fixed on the machine frame, and the small belt wheel is arranged on an output shaft of the variable frequency motor. The utility model realizes the automatic compensation function of the test torque, so that the torque peak value in the experimental process is compensated by the computer automatic control through data acquisition and analysis; the system can monitor in real time in a durability test, judge when a product fails and realize automatic shutdown; in the experimental process, measuring errors caused by the clearance between the spline shaft and the spline hole of the tested workpiece are eliminated; simple and novel structure and convenient use and operation.

Description

Torsion endurance constant torque testing machine for automobile dry friction type clutch driven disc assembly

Technical Field

The utility model relates to a field that automobile parts detected, concretely relates to automobile is with torsion durable constant torque testing machine of dry friction formula clutch driven plate assembly.

Background

In the conventional equipment for detecting the torsional durability of the dry friction type clutch driven disc assembly for the automobile, the test torque can be achieved only by adjusting the torsional angle, and then the whole durability test is carried out by locking the torsional angle. Therefore, in the experiment process, along with the decline of the torsion characteristic of the clutch driven disc assembly to be tested, the tester does not have the compensation function of the test torque, so that the actual test torque in the middle and later periods of the endurance test does not meet the requirement of test conditions, the severe working condition of automobile hill starting cannot be effectively simulated, and the effective service life of the clutch driven disc assembly cannot be effectively verified.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the not enough of prior art existence, and provide a dry friction formula clutch driven plate assembly twists reverse durable constant torque testing machine for car.

The purpose of the utility model is accomplished through following technical scheme: the torsion endurance constant torque testing machine for the automobile dry friction type clutch driven disc assembly mainly comprises a machine base, a driving mechanism, a manual driving loading mechanism, a torsion mechanism, a compensation mechanism and an aligning mechanism, wherein the driving mechanism, the manual driving loading mechanism, the torsion mechanism and the compensation mechanism are respectively fixed on the machine base, and the aligning mechanism is fixed on the torsion mechanism; the machine base is provided with a frame, the variable frequency motor is fixed on the frame, the small belt wheel is arranged on an output shaft of the variable frequency motor and transmits power to the large belt wheel of the driving mechanism through the V-ribbed belt, the bedplate is fixed on the frame through the screw, and the outer frame is fixed on the bedplate. The compensation mechanism consists of a screw rod fixing seat A, a screw rod fixing seat B, a ball screw pair, a coupler A, a screw rod nut fixing seat, a precision planetary reducer and a servo motor A, wherein the screw rod fixing seat B, the screw rod fixing seat A and the screw rod nut fixing seat are respectively fixed on the bedplate; the compensation mechanism is also provided with a limit detection unit consisting of a fixed support, a left limit proximity sensor, an induction block, a zero point proximity sensor and a right limit proximity sensor, the fixed support is fixed on a bedplate of the machine base through screws, the induction block is fixed on a lead screw nut fixing seat, the zero point proximity sensor is fixed at the middle position of the fixed support, and the left limit proximity sensor and the right limit proximity sensor are respectively fixed at the left side and the right side of the fixed support.

The driving mechanism consists of a transmission shaft, an eccentric wheel, a pressing plate, a T-shaped sliding block, an adjusting bolt, a connecting rod, a pin, a needle bearing, a tooth-shaped spacer bush, an adjusting pad, a driving supporting seat and a large belt wheel, wherein the T-shaped sliding block is installed in a chute of the eccentric wheel by a left pressing plate and a right pressing plate, one end of the adjusting bolt is fixed on the eccentric wheel, the other end of the adjusting bolt is connected with an inner threaded hole of the T-shaped sliding block, the eccentric distance between the axis of the T-shaped sliding block and the axis of the eccentric wheel can be adjusted by rotating the adjusting bolt, the eccentric wheel is installed at one end of the transmission shaft; the T-shaped sliding block is also provided with a connecting rod, a pin, a needle bearing, a tooth-shaped spacer bush and an adjusting pad are arranged on a tooth-shaped hole at the other end of the connecting rod, and the connecting rod is connected with a rocker on the torsion mechanism through the pin.

The manual driving loading mechanism comprises a sliding table, a pinion, a cylinder fixing plate, a cylinder, a linear guide rail pair, a speed reducer and a servo motor B, wherein the sliding table is fixed on the linear guide rail pair, the linear guide rail pair is fixed on a platen, the cylinder fixing plate is also fixed on the platen, the cylinder is fixed on the cylinder fixing plate, a piston rod of the cylinder is connected with the sliding table and can push the sliding table to move linearly, the servo motor B is connected with the speed reducer and then fixed on the sliding table, and the pinion is arranged on an output shaft of the speed reducer.

The torsion mechanism consists of a rocker, a torsion shaft A, a rotary encoder, a fixed support, a movable fixed plate, a linear guide rail slide block, a linear guide rail, a screw nut fixed seat, a spline shaft, a flange, an expansion sleeve, a torsion support seat B, a torsion shaft B, a diaphragm type coupler, a torque sensor, a torsion support seat A and a coupler B; the rocker is fixedly connected with a torsion shaft A through a pin and a screw, a torque sensor is arranged between the torsion shaft A and the torsion shaft B, one end of the torque sensor with a flange is connected with the torsion shaft A through a diaphragm type coupler, the other end of the torque sensor is connected with a torsion shaft B through a diaphragm type coupler, the torsion shaft A is fixed on a torsion support seat A, the torsion shaft B is fixed on a torsion support seat B, a rotary encoder is arranged at the end part of the torsion shaft A, the output end of the torsion shaft B is connected with the flange through an expansion sleeve, the torsion support seat A and the torsion support seat B are fixed on a movable fixed plate, a linear guide rail sliding block and a linear guide rail are arranged on the movable fixed plate; the rocker is connected with a connecting rod on the driving mechanism through a pin, a needle bearing, a tooth-shaped spacer bush and an adjusting washer.

The aligning mechanism consists of a clamp plate B, a driven plate assembly of the workpiece to be measured, a clamp plate A, a precision rotary table, a servo motor C and a precision planetary reducer, wherein the servo motor C and the precision planetary reducer are fixedly connected with an input shaft hole of the precision rotary table after being connected, the clamp plate B is fixed at the rotary part of the precision rotary table, and the driven plate assembly of the workpiece to be measured is clamped between the clamp plate B and the clamp plate A by the clamp plate A through screws.

The utility model has the advantages that: the automatic compensation function of the test torque is realized, so that the torque peak value in the test process is subjected to data acquisition and analysis, and the computer automatically controls and compensates the test torque; the system can monitor in real time in a durability test, judge when a product fails and realize automatic shutdown; in the experimental process, measuring errors caused by the clearance between the spline shaft and the spline hole of the tested workpiece are eliminated; simple and novel structure and convenient use and operation.

Drawings

Fig. 1 is a mechanism distribution diagram of the present invention.

Fig. 2 is a mechanism distribution diagram of the present invention.

Fig. 3 is a front view of the structure of the present invention.

Fig. 4 is a top view of the structure of the present invention.

Fig. 5 is a schematic structural diagram of the compensating mechanism.

Description of reference numerals: the device comprises a machine base I, a driving mechanism II, a manual driving loading mechanism III, a torsion mechanism IV, a compensation mechanism V, a centering mechanism VI, a machine frame 1, a variable frequency motor 2, a V-ribbed belt 3, a precision planetary reducer 4, a servo motor A5, a bedplate 6, a sliding table 7, a pressing plate 8, a pinion 9, a T-shaped slider 10, an adjusting bolt 11, a connecting rod 12, a pin 13, an outer frame 14, a rocker 15, a torsion shaft A16, a rotary encoder 17, a fixed frame 18, a movable fixed plate 19, a linear guide slider 20, a linear guide 21, a lead screw fixed seat A22, a ball lead screw pair 23, a lead screw nut fixed seat 24, a lead screw fixed seat B25, a coupler A26, a small belt wheel 28, a clamp plate B29, a driven plate assembly 30 of a tested workpiece, a clamp plate A31, a spline shaft 32, a precision rotary table 33, a servo motor C34, a precision planetary reducer 35, a flange 36, an expansion sleeve 37, a torsion, The device comprises a torque sensor 41, a torsion supporting seat A42, a coupling B43, a needle bearing 44, a tooth-shaped spacer 45, an adjusting pad 46, an eccentric wheel 47, an air cylinder fixing plate 48, an air cylinder 49, a driving supporting seat 50, a linear guide rail pair 51, a transmission shaft 52, a speed reducer 53, a servo motor B54, a large belt wheel 55, a fixing bracket 56, a left limit proximity sensor 57, an induction block 58, a zero point proximity sensor 59 and a right limit proximity sensor 60.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings:

example (b): as shown in the attached drawing, the torsion durable constant torque testing machine for the automobile dry friction type clutch driven disc assembly mainly comprises a base I, a driving mechanism II, a manual driving loading mechanism III, a torsion mechanism IV, a compensation mechanism V and an aligning mechanism VI, wherein the driving mechanism II, the manual driving loading mechanism III, the torsion mechanism IV and the compensation mechanism V are respectively fixed on the base I, and the aligning mechanism VI is fixed on the torsion mechanism IV; the machine base I is provided with the machine frame 1, the variable frequency motor 2 is fixed on the machine frame 1, the small belt pulley 28 is arranged on an output shaft of the variable frequency motor 2 and transmits power to the large belt pulley 55 of the driving mechanism II through the V-ribbed belt 3, the bedplate 6 is fixed on the machine frame 1 through screws, and the outer frame 14 is fixed on the bedplate 6. The compensation mechanism V consists of a screw rod fixing seat A22, a screw rod fixing seat B25, a ball screw pair 23, a coupler A26, a screw rod nut fixing seat 24, a precise planetary reducer 4 and a servo motor A5, wherein the screw rod fixing seat B25, the screw rod fixing seat A22 and the screw rod nut fixing seat 24 are respectively fixed on the bedplate 6, two ends of the ball screw pair 23 are respectively fixed on the screw rod fixing seat A22 and the screw rod nut fixing seat 24, the servo motor A5 is connected with the precise planetary reducer 4 and then fixed on the screw rod fixing seat B25, an output shaft of the precise planetary reducer 4 is connected with the ball screw pair 23 through the coupler A26, and a nut of the ball screw pair 23 is fixed on the screw rod nut fixing seat 24 through; the compensation mechanism V is also provided with a limit detection unit consisting of a fixed support 56, a left limit proximity sensor 57, an induction block 58, a zero point proximity sensor 59 and a right limit proximity sensor 60, the fixed support 56 is fixed on the bedplate 6 of the machine base through screws, the induction block 58 is fixed on the lead screw nut fixing seat 24, the zero point proximity sensor 59 is fixed at the middle position of the fixed support 56, and the left limit proximity sensor 57 and the right limit proximity sensor 60 are respectively fixed at the left side and the right side of the fixed support 56.

The driving mechanism II consists of a transmission shaft 52, an eccentric wheel 47, a pressing plate 8, a T-shaped sliding block 10, an adjusting bolt 11, a connecting rod 12, a pin 13, a needle bearing 44, a tooth-shaped spacer bush 45, an adjusting pad 46, a driving supporting seat 50 and a large belt wheel 55, wherein the T-shaped sliding block 10 is installed in a left pressing plate 8 and a right pressing plate 8 and fixed in a chute of the eccentric wheel 47, one end of the adjusting bolt 11 is fixed on the eccentric wheel, the other end of the adjusting bolt 11 is connected with an internal threaded hole of the T-shaped sliding block 10, the eccentric distance between the axis of the T-shaped sliding block 10 and the axis of the eccentric wheel 47 can be adjusted by rotating the adjusting bolt 11, the eccentric wheel 47 is installed on one end of the transmission shaft 52; the T-shaped sliding block 10 is also provided with a connecting rod 12, a pin 13, a needle bearing 44, a tooth-shaped spacer 45 and an adjusting pad 46 are arranged on a tooth-shaped hole at the other end of the connecting rod 12, and the connecting rod 12 is connected with a rocker 15 on the torsion mechanism IV through the pin 13.

The manual driving loading mechanism III is composed of a sliding table 7, a pinion 9, a cylinder fixing plate 48, a cylinder 49, a linear guide rail pair 51, a speed reducer 53 and a servo motor B54, the sliding table 7 is fixed on the linear guide rail pair 51, the linear guide rail pair 51 is fixed on the bedplate 6, the cylinder fixing plate 48 is also fixed on the bedplate 6, the cylinder 49 is fixed on the cylinder fixing plate 48, a piston rod of the cylinder 49 is connected with the sliding table 7 and can push the sliding table to move linearly, the servo motor B54 is connected with the speed reducer 53 and then fixed on the sliding table 7, and the pinion 9 is mounted on an output shaft of the speed reducer.

The torsion mechanism IV consists of a rocker 15, a torsion shaft A16, a rotary encoder 17, a fixed support 18, a movable fixed plate 19, a linear guide rail slider 20, a linear guide rail 21, a screw nut fixing seat 24, a spline shaft 32, a flange 36, an expansion sleeve 37, a torsion supporting seat B38, a torsion shaft B39, a diaphragm type coupler 40, a torque sensor 41, a torsion supporting seat A42 and a coupler B43; the rocker 15 is fixedly connected with a torsion shaft A16 through a pin and a screw, a torque sensor 41 is arranged between a torsion shaft A16 and a torsion shaft B39, one end of the torque sensor 41 with a flange is connected with the torsion shaft A16 through a diaphragm type coupling 40, the other end of the torque sensor is connected with the torsion shaft B39 through a diaphragm type coupling 40, the torsion shaft A16 is fixed on a torsion supporting seat A42, the torsion shaft B39 is fixed on a torsion supporting seat B38, a rotary encoder 17 is arranged at the end part of a torsion shaft A16, the output end of the torsion shaft B39 is connected with a flange 36 through an expanding sleeve 37, the torsion supporting seat A42 and the torsion supporting seat B38 are fixed on a movable fixing plate 19, the movable fixing plate 19 is provided with a linear guide rail slider 20 and a linear guide rail 21, and; the rocker 15 is connected to the connecting rod 12 of the drive mechanism ii via a pin 13, a needle bearing 44, a toothed spacer 45 and an adjusting pad 46.

The aligning mechanism VI is composed of a clamp plate B29, a driven plate assembly 30 of a measured workpiece, a clamp plate A31, a precision rotary table 33, a servo motor C34 and a precision planetary reducer 35, wherein the servo motor C34 and the precision planetary reducer 35 are connected and then fixedly connected with an input shaft hole of the precision rotary table 33, the clamp plate B29 is fixed at the rotary part of the precision rotary table 33, and the driven plate assembly 30 of the measured workpiece is clamped between the clamp plate B29 and the clamp plate A31 by the clamp plate A31 through screws.

The utility model discloses the working process: when the test is started, firstly, the torsion characteristic curve of the driven disc assembly is determined to obtain the corresponding rotation angle of the test torque, the sum of the rotation angles driven in the forward direction and the reverse direction is the angle required by the test, the testing machine is embodied as a deflection included angle theta formed by two extreme positions of the motion of the rocker 15, the control mode of the computer control system is switched to a manual mode after the deflection included angle theta is obtained, the compensating mechanism is reset to a mechanical zero point, at the moment, the servo motor A5 drives the precision planetary reducer 4 to drive the ball screw pair 23 according to a control program, the mechanical zero point is found when the zero point approaches the sensor 59, after the zero point work is completed, the air cylinder 49 driving the manual loading mechanism is sucked, the pinion 9 of the manual loading mechanism is meshed with the teeth of the eccentric wheel 47, the screws on the left and right pressing plates 8 are slightly loosened to enable the T-shaped sliding block 10 to slide, the adjusting bolt 11 is screwed by a ratchet wrench to enable the T, at this time, the servo motor B54 of the manual loading mechanism can be manually controlled to rotate through an electrical control system, the servo motor B54 drives the pinion 9, the eccentric wheel 47 is driven to do circular motion through meshing transmission of gears and drives the connecting rod 12 and the rocker 15 to move, a crank rocker arm motion mechanism is formed, a deflection included angle theta formed by two limit positions of the rocker 15 can be obtained, the deflection included angle theta can be measured through a rotary encoder and is checked with an angle required by an experiment, a left pressing plate 8 and a right pressing plate 8 on the eccentric wheel 47 are locked through screws when the deflection included angle theta meets an experiment condition, and the position of the T-shaped sliding block 10 on the eccentric wheel 47 is continuously adjusted until the required deflection included angle theta is obtained when the deflection included angle theta does not meet the experiment condition. After the test angle is adjusted, the clamping plate B31 is fixed on the precision rotary table 33 through screws, the spline shaft 32 is sleeved in the spline hole of the driven plate assembly of the tested workpiece, and the clamping plate A29 is fixed on the clamping plate B31 through screws, so that the driven plate assembly of the tested workpiece is fixed between the clamping plate A29 and the clamping plate B31. The servo motor B54 of the manual loading mechanism is controlled manually, the servo motor C34 of the centering mechanism is controlled manually to drive the precision rotary table 33 to adjust to a required yaw angle center, and after the required yaw angle center is adjusted, the parameters of the centering mechanism are set to zero through a computer control system. At this time, the sucked air cylinder 49 is disconnected, so that the pinion 9 of the manual loading mechanism is meshed with and disengaged from the teeth of the eccentric wheel 47, the control mode of the computer control system is switched to an automatic mode, the computer control system automatically controls the whole experiment of the testing machine, in the experiment process, the computer data acquisition system acquires real-time data fed back by the torque sensor at a high speed and analyzes the real-time data to obtain a peak value, the control system analyzes the real-time data according to the acquired data, when the test frequency reaches a certain number, the vibration absorber of the driven disc assembly of the tested workpiece is attenuated due to performance, the detected torque is smaller, at the moment, the computer control system sends an instruction to the servo motor A5 of the compensation mechanism according to the attenuation amount to compensate, the deflection angle theta is increased to obtain the specified test torque requirement, the deflection central line is deviated after the deflection angle theta is increased, and at the moment, the computer control system controls the servo motor C34, and automatically adjusting the deflection center to a test center line until the whole test process is completed, wherein in the test process, the control system can set the size of an adjustment range and parameters for judging whether the product fails according to the torsion characteristic curve of the driven disc assembly, and the computer automatically controls and judges whether the tested workpiece fails.

It should be understood that equivalent substitutions or changes to the technical solution and the inventive concept of the present invention should be considered to fall within the scope of the appended claims for the skilled person.

Claims

1. The utility model provides a car is with durable torque tester that decides that twists reverse of dry friction formula clutch driven plate assembly which characterized in that: the device mainly comprises a base, a driving mechanism, a manual driving loading mechanism, a twisting mechanism, a compensating mechanism and a centering mechanism, wherein the driving mechanism, the manual driving loading mechanism, the twisting mechanism and the compensating mechanism are respectively fixed on the base, and the centering mechanism is fixed on the twisting mechanism; the machine base is provided with a machine frame (1), the variable frequency motor (2) is fixed on the machine frame (1), the small belt wheel (28) is arranged on an output shaft of the variable frequency motor (2) and transmits power to the large belt wheel (55) of the driving mechanism through the V-ribbed belt (3), the bedplate (6) is fixed on the machine frame (1) through screws, and the outer frame (14) is fixed on the bedplate (6); the compensation mechanism consists of a screw rod fixing seat A (22), a screw rod fixing seat B (25), a ball screw pair (23), a coupling A (26), a screw rod nut fixing seat (24), a precise planetary reducer (4) and a servo motor A (5), a screw rod fixing seat B (25), a screw rod fixing seat A (22) and a screw rod nut fixing seat (24) are respectively fixed on the bedplate (6), two ends of a ball screw rod pair (23) are respectively fixed on the screw rod fixing seat A (22) and the screw rod nut fixing seat (24), a servo motor A (5) is connected with a precision planetary reducer (4) and then fixed on the screw rod fixing seat B (25), an output shaft of the precision planetary reducer (4) is connected with the ball screw rod pair (23) through a coupler A (26), and a nut of the ball screw rod pair (23) is fixed on the screw rod nut fixing seat (24) through a screw; the compensation mechanism is also provided with a limit detection unit consisting of a fixed support (56), a left limit proximity sensor (57), an induction block (58), a zero point proximity sensor (59) and a right limit proximity sensor (60), the fixed support (56) is fixed on a bedplate (6) of the machine base through screws, the induction block (58) is fixed on a lead screw nut fixed seat (24), the zero point proximity sensor (59) is fixed at the middle position of the fixed support (56), and the left limit proximity sensor (57) and the right limit proximity sensor (60) are respectively fixed at the left side and the right side of the fixed support (56).

2. The torsion endurance constant torque tester for the automobile dry friction clutch driven disc assembly according to claim 1, characterized in that: the driving mechanism consists of a transmission shaft (52), an eccentric wheel (47), a pressing plate (8), a T-shaped sliding block (10), an adjusting bolt (11), a connecting rod (12), a pin (13), a needle bearing (44), a tooth-shaped spacer bush (45), an adjusting pad (46), a driving supporting seat (50) and a large belt wheel (55), the T-shaped sliding block (10) is arranged in a chute of the eccentric wheel (47) by a left pressing plate (8) and a right pressing plate (8), one end of the adjusting bolt (11) is fixed on the eccentric wheel, the other end of the adjusting bolt is connected with an internal threaded hole of the T-shaped sliding block (, the eccentric distance between the axis of the T-shaped sliding block (10) and the axis of the eccentric wheel (47) can be adjusted by rotating the adjusting bolt (11), the eccentric wheel (47) is installed on one end of the transmission shaft (52), the other end of the transmission shaft (52) is provided with a large belt wheel (55), and the transmission shaft (52) is fixed on a bedplate (6) of the stand by driving the supporting seat (50); the T-shaped sliding block (10) is also provided with a connecting rod (12), a pin (13), a needle bearing (44), a tooth-shaped spacer bush (45) and an adjusting pad (46) are arranged on a tooth-shaped hole at the other end of the connecting rod (12), and the connecting rod (12) is connected with a rocker (15) on the torsion mechanism (IV) through the pin (13).

3. The torsion endurance constant torque tester for the automobile dry friction clutch driven disc assembly according to claim 1, characterized in that: the manual driving loading mechanism is composed of a sliding table (7), a pinion (9), a cylinder fixing plate (48), a cylinder (49), a linear guide rail pair (51), a speed reducer (53) and a servo motor B (54), wherein the sliding table (7) is fixed on the linear guide rail pair (51), the linear guide rail pair (51) is fixed on a bedplate (6), the cylinder fixing plate (48) is also fixed on the bedplate (6), the cylinder (49) is fixed on the cylinder fixing plate (48), a piston rod of the cylinder (49) is connected with the sliding table (7) and can push the sliding table to move linearly, the servo motor B (54) is connected with the speed reducer (53) and then fixed on the sliding table (7), and the pinion (9) is arranged on an output shaft of the speed reducer (53).

4. The torsion endurance constant torque tester for the automobile dry friction clutch driven disc assembly according to claim 1, characterized in that: the torsion mechanism consists of a rocker (15), a torsion shaft A (16), a rotary encoder (17), a fixed support (18), a movable fixed plate (19), a linear guide rail slider (20), a linear guide rail (21), a lead screw nut fixed seat (24), a spline shaft (32), a flange (36), an expansion sleeve (37), a torsion support seat B (38), a torsion shaft B (39), a diaphragm type coupler (40), a torque sensor (41), a torsion support seat A (42) and a coupler B (43); the rocker (15) is fixedly connected with a torsion shaft A (16) through a pin and a screw, a torque sensor (41) is arranged between the torsion shaft A (16) and a torsion shaft B (39), one end of the torque sensor (41) with a flange is connected with the torsion shaft A (16) through a diaphragm type coupling (40), the other end of the torque sensor is connected with the torsion shaft B (39) through a diaphragm type coupling (40), the torsion shaft A (16) is fixed on a torsion support seat A (42), the torsion shaft B (39) is fixed on a torsion support seat B (38), a rotary encoder (17) is arranged at the end part of the torsion shaft A (16), the output end of the torsion shaft B (39) is connected with a flange (36) through an expanding sleeve (37), the torsion support seat A (42) and the torsion support seat B (38) are fixed on a movable fixed plate (19), the movable fixed plate (19) is provided with a linear guide rail sliding block (20) and a, the linear guide rail (21) is fixed on the bedplate (6) by screws; the rocker (15) is connected with a connecting rod (12) on the driving mechanism (II) through a pin (13), a needle bearing (44), a tooth-shaped spacer bush (45) and an adjusting pad (46).

5. The torsion endurance constant torque tester for the automobile dry friction clutch driven disc assembly according to claim 1, characterized in that: the aligning mechanism consists of a clamp plate B (29), a driven plate assembly (30) of a measured workpiece, a clamp plate A (31), a precision rotary table (33), a servo motor C (34) and a precision planetary reducer (35), wherein the servo motor C (34) and the precision planetary reducer (35) are fixedly connected with an input shaft hole of the precision rotary table (33) after being connected, the clamp plate B (29) is fixed at a rotary part of the precision rotary table (33), and the driven plate assembly (30) of the measured workpiece is clamped between the clamp plate B (29) and the clamp plate A (31) by the clamp plate A (31) through screws.