A variable drive end variable damping shock absorber test apparatus

Abstract

The application provides a variable driving end variable damping shock absorber testing device for testing clutch shock absorber torque characteristics, comprising a rotating assembly provided with a mounting groove matched with the outer contour size of a driven disc, the driven disc is coaxially clamped in the mounting groove, and a spline shaft sleeve is exposed; a vertical moving assembly for driving the vertical reciprocating linear displacement of a transmission and torsion detection assembly as a whole; the transmission and torsion detection assembly is used as a transmission end input, simulates power transmission between the transmission and the driven disc, and can form a synchronous rotation member with the driven disc hub of the driven disc; the power output and torsion detection assembly is used as an engine end input, simulates power output to the driven disc, forms a synchronous rotation member with the rotating disc, drives the rotating disc to rotate, and relies on the friction between the rotating disc and the friction plate to drive the friction plate to rotate. The application can comprehensively test the torsion characteristics of the clutch shock absorber device.

Description

TECHNICAL FIELD

[0001] The present application relates to a clutch damper detection device, more particularly to a variable drive end variable damping damper test device. BACKGROUND

[0002] The clutch is a main component in the automobile transmission system, mainly installed between the engine and the transmission, which can cut off and transmit the power of the transmission system. The clutch driven disc torsional characteristic detection is an important method to verify the performance of the driven disc.

[0003] The existing clutch damper device torsional characteristic detection device mostly only involves single shaft drive detection, that is, the motor output end is engaged with the clutch driven disc hub, and the clutch driven disc torsional characteristic detection is realized by controlling the motor forward and reverse rotation. This detection method ignores the change of the torque transmission direction of the clutch driven disc in actual work, and has certain limitations for accurately detecting the torsional characteristic of the clutch driven disc in actual work.

[0004] The existing clutch damper device torsional characteristic detection device mostly only involves detection of the fixed damping type clutch damper device, and cannot accurately detect the torsional hysteresis characteristic of the variable damping type clutch damper device in work. SUMMARY

[0005] In view of the above technical background, the present application provides a variable drive end variable damping damper test device, which can realize more comprehensive test of the clutch damper device torsional characteristic.

[0006] To achieve the above purpose, the present application adopts the following technical scheme:

[0007] A variable drive end variable damping damper test device for testing the torque characteristic of a clutch damper, the test object being a driven disc with a damper in the clutch, the driven disc hub and the friction plate being relatively rotatable in the driven disc, the device comprising:

[0008] A rotating assembly, the pressure plate and the rotating disc of the rotating assembly being coaxial and detachably assembled, the disc body being horizontal, and forming an installation groove suitable for the outer contour size of the driven disc between them, the driven disc being coaxial with the rotating assembly and built-in in the installation groove, clamped between the pressure plate and the rotating disc, the friction plate and the lower end surface of the pressure plate and the upper end surface of the rotating disc being in close contact respectively, the pressure plate being provided with a central hole, and the spline shaft sleeve of the driven disc being exposed through the central hole;

[0009] A vertical moving assembly for driving the vertical reciprocating linear displacement of the whole driving and torsional detection assembly;

[0010] The transmission and torsion detection assembly is used as a transmission end input, simulates power transmission between the transmission end and the driven disc, is integrally hoisted above the rotating assembly, and comprises a transmission end torsion detection servo motor, a transmission end torque sensor, a shaft coupling and a spline shaft which are coaxially arranged and assembled with the rotating assembly, the transmission end torque sensor is arranged between the output end of the transmission end torsion detection servo motor and the shaft coupling, the shaft coupling is connected with the spline shaft which is adapted to the spline shaft sleeve, and the sensing end of the transmission end torque sensor is connected with the shaft coupling; the transmission and torsion detection assembly is integrally driven by the vertical moving assembly, can be lowered to be connected with the spline shaft sleeve of the lower driven disc through the spline shaft, and forms a synchronous rotary member with the driven disc hub of the driven disc.

[0011] The power output and torsion detection assembly is used as an engine end input, simulates power output to the driven disc, is integrally hoisted below the rotating assembly, and comprises a driving end torsion detection servo motor, a flange and a driving end torque sensor which are coaxially arranged and assembled with the rotating assembly, the output end of the driving end torsion detection servo motor is upward, the driving end torque sensor is arranged between the output end and the flange, the flange is coaxially assembled with the upper rotating disc, forms a synchronous rotary member with the rotating disc after assembly, drives the rotating disc to rotate, relies on the friction force between the pressure disc and the friction plate and the rotating disc and the friction plate, drives the friction plate to rotate, and the sensing end of the driving end torque sensor is connected with the flange.

[0012] During testing, the transmission and torsion detection assembly is connected with the spline shaft sleeve of the driven disc through the spline shaft, and the transmission end torsion detection servo motor and the driving end torsion detection servo motor are used alternately.

[0013] The structure characteristics of the application also include:

[0014] When the power output and torsion detection assembly simulates the power output of the engine to the driven disc, the driving end torsion detection servo motor drives the rotating disc to rotate forward or reversely, relies on the friction force between the pressure disc and the friction plate and the rotating disc and the friction plate, or drives the friction plate to rotate forward from the initial position to the forward torsion limit position, then reversely to the initial position, or drives the friction plate to rotate reversely from the initial position to the reverse torsion limit position, then forward to the initial position; during testing, the forward torque value and the reverse torque value are collected in real time through the driving end torque sensor; during the process that the driving end torsion detection servo motor rotates forward from the initial position and then reverses to the initial position, the power output demarcation position between the initial position and the forward torsion limit position is taken as a boundary, the forward rotation process is slowly loaded first and then quickly loaded, and the reverse rotation process is quickly unloaded first and then slowly unloaded; during the process that the driving end torsion detection servo motor rotates reversely from the initial position and then rotates forward to the initial position, the reverse rotation process is slowly loaded, and the forward rotation process is slowly unloaded.

[0015] When simulating power transmission between the driven disc and the gearbox using transmission and torsion detection components, the driven disc hub is either driven by a torsion detection servo motor at the transmission end, either rotating forward from the initial position until the forward torsion limit, and then rotating backward to reset to the initial position, or rotating backward from the initial position until the reverse torsion limit, and then rotating forward to reset to the initial position. During the test, the forward and reverse torque values ​​are collected in real time by a torque sensor at the transmission end. During the process of the torsion detection servo motor rotating backward and then forward from the initial position to reset, the boundary between the initial position and the reverse torsion limit position is used as the dividing line. During the reverse rotation, the load is applied slowly and then rapidly; during the forward rotation, the load is applied rapidly and then slowly. During the process of the torsion detection servo motor rotating forward and then reverse from the initial position to reset, the load is applied slowly during the forward rotation and the load is applied slowly during the reverse rotation.

[0016] The simulation of power transmission between the driven disc and the transmission was repeated 2-3 times using the transmission and torsion detection components. The positive torque value and the reverse torque value were recorded in real time by the torque sensor at the transmission end during the last simulation.

[0017] The simulation of the power output from the engine to the driven disc is repeated 2-3 times using the power output and torsion detection components. The positive torque value and the negative torque value collected in real time by the torque sensor at the drive end are recorded in the last time.

[0018] When the torsion detection servo motor drives the friction plate to rotate forward to the forward torsion limit position and then rotates backward to reset, during the forward rotation process, from the initial position θ0 to the power output dividing position θ... qz 1 The motor is slowly loaded and rotates with angular acceleration α1, satisfying the relationship H. qz1 =J(α) 1min ~α 1max Automatic force output dividing position θ qz 1 To the positive torsional limit position θ qz 2 The motor is rapidly loaded and rotates with angular acceleration α2, satisfying the relationship H. qz2 =J(α) 2min ~α 2max During the reverse rotation and reset process, the self-forward torsional limit position θ qz 2 To the power output dividing position θ qz 1 The motor is quickly unloaded and rotates with an angular acceleration of -α2, satisfying the relationship H. qf2 =-J(α) 2min ~α 2max Automatic force output dividing position θ qz 1 Upon reaching the initial position θ0, the motor slowly unloads and rotates with angular acceleration -α1, satisfying the relationship H. qf1 =-J(α)1min ~ α 1max ); when the driving end torsion detection servo motor drives the friction plate to first reverse rotate to the reverse torsion limit position and then to forward rotate to reset, in the reverse rotation process, from the initial position θ0 to the reverse torsion limit position θ qf 2 , the motor is slowly loaded to rotate with an angular acceleration -α1, and the relationship H qf3 = -J(α 1min ~ α 1max ) is met; in the forward rotation reset process, from the reverse torsion limit position θ qf 2 to the initial position θ0, the motor is slowly unloaded to rotate with an angular acceleration α1, and the relationship H qz3 = J(α 1min ~ α 1max ) is met; wherein H qz1 , H qz2 , H qz3 , H qf1 , H qf2 , H qf3 are the driving end torsion detection servo motor torques, J is the moment of inertia, α 1min ≤ α1 ≤ α 1max , α 2min ≤ α2 ≤ α 2max , and α 1max < α 2min ;

[0019] When the driving end torsion detection servo motor drives the driven disc hub to first reverse rotate to the reverse torsion limit position and then to forward rotate to reset, in the reverse rotation process, from the initial position θ0 to the power transmission boundary position θ cf 1 , the motor is slowly loaded to rotate with an angular acceleration -α1, and the relationship H cf1 = -J(α 1min ~ α 1max ) is met; from the power transmission boundary position θ cf 1 to the reverse torsion limit position θ cf 2 , the motor is quickly loaded to rotate with an angular acceleration -α2, and the relationship H cf2 = -J(α 2min ~ α 2max ) is met; in the forward rotation reset process, from the reverse torsion limit position θ cf 2 to the power transmission boundary position θ cf 1 , the motor is quickly unloaded to rotate with an angular acceleration α2, and the relationship H cz2 = J(α 2min ~ α 2max ) is met; from the power transmission boundary position θ cf 1 to the initial position θ0, the motor is slowly unloaded to rotate with an angular acceleration α1, and the relationship H cz1 = J(α 1min ~ α1max When the servo motor for torsion detection at the transmission end drives the driven disc hub to rotate forward to the forward torsion limit position and then rotates backward to reset, during the forward rotation process, from the initial position θ0 to the forward torsion limit position θ... cz 2 The motor is slowly loaded and rotates with angular acceleration α1, satisfying the relationship H. cz3 =J(α) 1min ~α 1max During the reverse rotation reset process, the self-reverse torsional limit position θ cz 2 Upon reaching the initial position θ0, the motor slowly unloads and rotates with angular acceleration -α1, satisfying the relationship H. cf3 =-J(α) 1min ~α 1max ); where H qc1 H qc2 H qc3 H qc1 H qc2 H qc3 The torque of the servo motor for torsional detection at the transmission end is J, where J is the moment of inertia and α is α. 1min ≤α1≤α 1max α 2min ≤α2≤α 2max α 1max <α 2min .

[0020] The entire device is installed on a workbench; an H-shaped frame is mounted on the upper part of the workbench, with a pair of vertical plates symmetrically positioned on both sides of the rotating component and fixed to the upper part of the workbench. The horizontal plate is horizontal, and the ends of the two plates are driven by linear displacement drive devices on the vertical plates and are vertically slidably set between the pair of vertical plates. The transmission and torsion detection components are installed in the middle of the horizontal plate. The rotating component is installed on the upper part of the workbench surface, and the power output and torsion detection components are installed below the workbench surface.

[0021] The linear displacement drive device is a pneumatic linear slide table set on the vertical plate. The two ends of the horizontal plate are connected to the sliders of the pneumatic linear slide tables on both sides. Driven by the cylinder of the pneumatic linear slide table, it can slide vertically along the slide rail. The lower end of the slide rail is provided with a limit block. When the slider slides to the limit block, the spline shaft and the spline bushing are fully engaged.

[0022] The equipment has a pre-drilled mounting slot for the turntable. The turntable is fitted into the mounting slot and is coupled to the outer edge of the mounting slot through a ring of L-shaped steps at the bottom. It is supported radially by a deep groove ball bearing and axially by a thrust cylindrical roller bearing.

[0023] The pressure plate and the turntable are detachably fastened together by a plurality of bolts that are equally spaced along the circumference, and the height position relative to the turntable is adjustable by bolts.

[0024] Compared with the prior art, the present application has the beneficial effects of:

[0025] 1. The present application adds a transmission and torsion detection assembly to the traditional clutch damper torsion characteristic detection device, so that the device can be driven by the power output and torsion detection assembly to simulate the power output to the driven disc as an engine, and can also be driven by the transmission and torsion detection assembly to simulate the power transmission between the driven disc and the transmission as a transmission. According to the actual detection requirements, different driving ends can be selected, so that the torsion characteristics of the clutch damper in actual work can be more comprehensively detected.

[0026] 2. During the test process, the angular acceleration of the driving end torsion detection servo motor and the transmission end torsion detection servo motor is controlled, and the clutch damper is controlled to be slowly loaded, quickly loaded, quickly unloaded, and slowly unloaded, so that different sizes of hysteresis torque can be generated when the clutch damper is torsioned in the forward or reverse direction, thereby realizing the torsion characteristic detection of the variable-damping clutch damper.

[0027] 3. The present application repeatedly rotates the driving end torsion detection servo motor and the transmission end torsion detection servo motor in the forward and reverse directions to pre-torsion the clutch damper, which helps to reduce errors and determine the elastic hysteresis torsion characteristics of the clutch damper, thereby realizing more accurate detection of the variable-damping torsion characteristics of the clutch damper.

[0028] 4. The rotating disc and the pressure disc body in the rotating assembly are horizontal and can be detachably assembled by bolts, which facilitates the clamping and unloading of the clutch damper during detection, has high disassembly and assembly efficiency, and low operation difficulty. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a perspective structural schematic diagram of the present application;

[0030] Figure 2 is a front view structural schematic diagram of the present application;

[0031] Figure 3 is a structural schematic diagram of the rotating assembly;

[0032] Figure 4 is a structural schematic diagram of the driven disc built in the rotating assembly;

[0033] Figure 5 is a structural schematic diagram of the spline shaft and the spline shaft sleeve engaged and matched on the basis of Figure 4

[0034] ​In the figure, 1 is driven disc hub; 2 is friction plate; 3 is spline shaft sleeve; 4 is pressure plate; 5 is rotating disc; 6 is mounting groove; 7 is transmission end torsion detection servo motor; 8 is transmission end torque sensor; 9 is coupling; 10 is spline shaft; 11 is driving end torsion detection servo motor; 12 is flange; 13 is driving end torque sensor; 14 is workbench; 15 is vertical plate; 16 is horizontal plate; 17 is sliding block; 18 is sliding rail; 19 is air cylinder; 20 is L-shaped step surface; 21 is deep groove ball bearing; 22 is thrust cylindrical roller bearing; 23 is limiting block. DETAILED DESCRIPTION

[0035] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described below in a clear and complete manner with reference to the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0036] Please refer to Figures 1 to 5 The variable driving end variable damping shock absorber test equipment of the embodiment is used for testing the torque characteristics of the clutch shock absorber, and the test object is a driven disc with a shock absorber in the clutch. The driven disc hub 1 and the friction plate 2 in the driven disc can rotate relative to each other. The equipment comprises:

[0037] A rotating assembly, the pressure plate 4 of the rotating assembly is coaxial with the rotating disc 5, and the rotating assembly is detachably assembled. The disc body is horizontal, and the mounting groove 6 suitable for the outer contour size of the driven disc is formed between the disc body and the rotating assembly. The driven disc is coaxial with the rotating assembly and is built-in in the mounting groove 6. The driven disc is clamped between the pressure plate 4 and the rotating disc 5. The friction plate 2 is in close contact with the lower end surface of the pressure plate 4 and the upper end surface of the rotating disc 5, respectively. The pressure plate 4 is provided with a central hole. The spline shaft sleeve 3 of the driven disc is exposed through the central hole.

[0038] A vertical moving assembly is used for driving the vertical reciprocating linear displacement of the whole transmission and torsion detection assembly.

[0039] The transmission and torsion detection assembly is used as the input of the transmission, simulates the power transmission between the transmission and the driven disc, and is hoisted above the rotating assembly. The transmission and torsion detection assembly comprises the transmission end torsion detection servo motor 7, the transmission end torque sensor 8, the coupling 9 and the spline shaft 10 which are coaxially arranged and assembled with the rotating assembly. The transmission end torque sensor 8 is arranged between the output end of the transmission end torsion detection servo motor 7 and the coupling 9. The transmission end torque sensor 8 is connected with the spline shaft 10 which is adapted to the spline shaft sleeve 3 through the coupling 9. The sensing end of the transmission end torque sensor 8 is connected with the coupling 9. The whole transmission and torsion detection assembly is driven by the vertical moving assembly and can be lowered to be connected with the spline shaft sleeve 3 of the driven disc below through the spline shaft 10 and form a synchronous rotary member with the driven disc hub 1 of the driven disc.

[0040] Power output and torsion detection assembly, for simulating power output to driven disc as engine end input, overall hoisting directly below rotating assembly, including coaxially arranged, coaxially assembled drive end torsion detection servo motor 11, flange 12 and drive end torque sensor 13, output end of drive end torsion detection servo motor 11 upward, drive end torque sensor 13 between drive end torsion detection servo motor 11 and flange 12, coaxially assembled with upper rotating disc 5 through flange 12, after assembly, synchronous rotation member is formed with rotating disc 5, rotating disc 5 is rotated through drive, friction plate 2 is rotated by friction force between pressure disc 4 and friction plate 2 and rotating disc 5 and friction plate 2, sensing end of drive end torque sensor 13 is connected with flange 12;

[0041] For testing, transmission and torsion detection assembly is connected through spline shaft 10 and spline shaft sleeve 3 of driven disc, drive end torsion detection servo motor 7 and drive end torsion detection servo motor 11 are one for one standby.

[0042] In specific implementation, corresponding structure setting also includes:

[0043] When power output and torsion detection assembly simulates power output of engine to driven disc, drive end torsion detection servo motor 11 drives rotating disc 5 to rotate forward or reversely, friction plate 2 is rotated forward to forward torsion limit from initial position and then reversely to initial position, or friction plate 2 is rotated reversely to reverse torsion limit from initial position and then forward to initial position, through friction force between pressure disc 4 and friction plate 2 and rotating disc 5 and friction plate 2; during testing, forward torque value and reverse torque value are collected in real time through drive end torque sensor 13; during drive end torsion detection servo motor 11 rotates forward from initial position and then reverses to initial position, power output demarcation position between initial position and forward torsion limit position is taken as a boundary, slow loading is first performed and then fast loading is performed during forward rotation, fast unloading is first performed and then slow unloading is performed during reverse rotation; during drive end torsion detection servo motor 11 rotates reversely from initial position and then rotates forward to initial position, slow loading is performed during reverse rotation, slow unloading is performed during forward rotation;

[0044] When simulating the power transmission between the driven disc and the transmission by the transmission and torsion detection assembly, the driven disc hub 1 is driven by the transmission end torsion detection servo motor 7 to rotate forward first until the positive torsion limit, and then reverse to reset to the initial position, or to rotate reverse first until the reverse torsion limit, and then rotate forward to reset to the initial position. During the test, the positive and reverse torque values are collected in real time by the transmission end torque sensor 8. During the reverse rotation and forward rotation of the transmission end torsion detection servo motor 7 from the initial position, the reverse rotation is first slowly loaded and then quickly loaded, and the forward rotation is first quickly unloaded and then slowly unloaded. During the reverse rotation and forward rotation of the transmission end torsion detection servo motor 7 from the initial position, the forward rotation is slowly loaded, and the reverse rotation is slowly unloaded.

[0045] The device is installed on the workbench 14; the workbench 14 is provided with an H-shaped stand on the upper end, and a pair of vertical plates 15 are symmetrically arranged on both sides of the rotating assembly, are fixedly arranged on the upper end of the workbench 14, and a horizontal plate 16 is horizontally arranged, both ends of the horizontal plate 16 are driven by linear displacement driving devices arranged on the vertical plates 15, and are vertically and slidably arranged between the pair of vertical plates 15. The transmission and torsion detection assembly is integrally installed on the middle part of the horizontal plate 16. The rotating assembly is installed on the upper end of the workbench 14, and the power output and torsion detection assembly is installed below the workbench 14.

[0046] The linear displacement driving device is a pneumatic linear slide arranged on the vertical plate 15, both ends of the horizontal plate 16 are connected with sliding blocks 17 of the pneumatic linear slides on both sides, and the horizontal plate 16 can vertically slide along slide rails 18 driven by cylinders 19 of the pneumatic linear slides. The lower end of the slide rail 18 is provided with a limiting block 23, and when the sliding block 17 slides to the limiting block, the spline shaft 10 is completely engaged with the spline shaft sleeve 3.

[0047] The device is provided with a mounting groove 6 for mounting the rotating disc 5, the rotating disc 5 is embedded in the mounting groove 6 in a matched manner, is coupled and contacted through a circle of L-shaped step surfaces 20 on the bottom between the outer edge of the mounting groove 6 and the rotating disc 5, is radially supported through deep groove ball bearings 21, and is axially supported through thrust cylindrical roller bearings 22.

[0048] The pressing disc 4 and the rotating disc 5 are detachably fastened through a plurality of bolts distributed at equidistant intervals in the circumferential direction, and the height position relative to the rotating disc 5 is adjustable through the bolts.

[0049] The shock absorber test device with the above structure is used for testing the torque characteristics of the clutch shock absorber.

[0050] The simulation of power transmission between the driven disc and the transmission is repeated 2-3 times by using the transmission and torsion detection assembly, and the positive and negative torque values collected in real time by the transmission end torque sensor 8 in the last time are recorded.

[0051] The simulation of power output of the engine to the driven disc is repeated 2-3 times by using the power output and torsion detection assembly, and the positive and negative torque values collected in real time by the driving end torque sensor 13 in the last time are recorded.

[0052] When the driving end torsion detection servo motor 11 drives the friction plate 2 to rotate forward to the positive torsion limit position and then rotate reversely to reset, in the forward rotation process, from the initial position θ0 to the power output boundary position θ qz 1 , the motor is slowly loaded to rotate at an angular acceleration α1, and satisfies the relationship H qz1 = J(α 1min ~ α 1max ), from the power output boundary position θ qz 1 to the positive torsion limit position θ qz 2 , the motor is quickly loaded to rotate at an angular acceleration α2, and satisfies the relationship H qz2 = J(α 2min ~ α 2max ), in the reverse rotation reset process, from the positive torsion limit position θ qz 2 to the power output boundary position θ qz 1 , the motor is quickly unloaded to rotate at an angular acceleration -α2, and satisfies the relationship H qf2 =-J(α 2min ~ α 2max ), from the power output boundary position θ qz 1 to the initial position θ0, the motor is slowly unloaded to rotate at an angular acceleration -α1, and satisfies the relationship H qf1 =-J(α 1min ~ α 1max ); when the driving end torsion detection servo motor 11 drives the friction plate 2 to rotate reversely to the negative torsion limit position and then rotate forward to reset, in the reverse rotation process, from the initial position θ0 to the negative torsion limit position θ qf 2 , the motor is slowly loaded to rotate at an angular acceleration -α1, and satisfies the relationship H qf3 =-J(α 1min ~ α 1max ), in the forward rotation reset process, from the negative torsion limit position θ qf 2 to the initial position θ0, the motor is slowly unloaded to rotate at an angular acceleration α1, and satisfies the relationship H qz3 =J(α 1min ~ α 1max ); wherein H qz1 , H qz2 , H qz3 , Hqf1 , H qf2 , H qf3 , H 1min , H 1max , H 2min , H 2max , H 1max , H 2min ;

[0053] When the driving end torsion detection servo motor 7 drives the driven disc hub 1 to first reverse rotate to the reverse torsion limit position and then forward rotate to reset, in the reverse rotation process, from the initial position θ0 to the power transmission boundary position θ cf 1 , the motor is slowly loaded to rotate with angular acceleration -α1, and the relationship H cf1 = -J(α 1min ~ α 1max ) is met, from the power transmission boundary position θ cf 1 to the reverse torsion limit position θ cf 2 , the motor is quickly loaded to rotate with angular acceleration -α2, and the relationship H cf2 = -J(α 2min ~ α 2max ) is met, in the forward rotation reset process, from the reverse torsion limit position θ cf 2 to the power transmission boundary position θ cf 1 , the motor is quickly unloaded to rotate with angular acceleration α2, and the relationship H cz2 = J(α 2min ~ α 2max ) is met, from the power transmission boundary position θ cf 1 to the initial position θ0, the motor is slowly unloaded to rotate with angular acceleration α1, and the relationship H cz1 = J(α 1min ~ α 1max ) is met; when the driving end torsion detection servo motor 7 drives the driven disc hub 1 to first forward rotate to the forward torsion limit position and then reverse rotate to reset, in the forward rotation process, from the initial position θ0 to the forward torsion limit position θ cz 2 , the motor is slowly loaded to rotate with angular acceleration α1, and the relationship H cz3 = J(α 1min ~ α 1max ) is met, in the reverse rotation reset process, from the forward torsion limit position θ cz 2 to the initial position θ0, the motor is slowly unloaded to rotate with angular acceleration -α1, and the relationship H cf3 = -J(α 1min ~ α 1max ) is met; wherein, H qc1 , H qc2 , H qc3 , Hqc1 , H qc2 , H qc3 J is the rotational inertia, a 1min ≤α1≤α 1max ,α 2min ≤α2≤α 2max ,α 1max <α 2min .

[0054] The following is an example of the test steps implemented for the clutch damper torque characteristics:

[0055] Step one: place the driven disc to be tested in the turntable 5, use the pressure plate 4 to press the driven disc tightly on the turntable 5, make the friction plate 2 tightly contact with the pressure plate 4 and the turntable 5, and fasten between the pressure plate 4 and the turntable 5 by bolts;

[0056] Step two: vertically move the linear displacement driving device of the assembly to vertically and linearly displace the cross plate 16 of the H-shaped stand, and then drive the transmission and torsion detection assembly as a whole to vertically displace, until the spline shaft 10 of the transmission and torsion detection assembly is completely engaged with the spline shaft sleeve 3 of the driven disc below;

[0057] Step three: the driving end torsion detection servo motor 11 of the power output and torsion detection assembly rotates forward, drives the driving end torque sensor 13 to rotate synchronously, and drives the turntable 5 to rotate forward through the flange 12, the turntable 5 drives the friction plate 2 to rotate forward synchronously by the friction between them, until the friction plate 2 rotates to the positive torsion limit, then the friction plate 2 is driven by the driving end torsion detection servo motor 11 to rotate reversely to reset, in the process, the driving end torque sensor 13 records the positive torque size and judges;

[0058] Step four: the driving end torsion detection servo motor 11 of the power output and torsion detection assembly reversely rotates, drives the driving end torque sensor 13 to reversely rotate, and drives the turntable 5 to reversely rotate through the flange 12, the turntable 5 drives the friction plate 2 to reversely rotate synchronously by the friction between them, until the friction plate 2 rotates to the reverse torsion limit, then the friction plate 2 is driven by the driving end torsion detection servo motor 11 to rotate forward to reset, in the process, the driving end torque sensor 13 records the reverse torque size and judges;

[0059] Step five: repeat steps three-four twice, and record the measurement data of the driving end torque sensor 13 in the last step three-four;

[0060] Step six: the transmission end torsion detection servo motor 7 rotates forward, the transmission end torsion detection servo motor 7 drives the transmission end torque sensor 8 to rotate forward, the transmission end torque sensor 8 drives the spline shaft 10 to rotate forward through the shaft coupling 9, the spline shaft 10 drives the driven disc hub 1 to rotate forward relative to the friction plate 2, until the rotation reaches the forward torsion limit, then the transmission end torsion detection servo motor 7 drives the reverse rotation to reset, in the process, the transmission end torque sensor 8 records the forward torque and makes a judgment;

[0061] Step seven: the transmission end torsion detection servo motor 7 rotates reversely, the transmission end torsion detection servo motor 7 drives the transmission end torque sensor 8 to rotate reversely, the transmission end torque sensor 8 drives the spline shaft 10 to rotate reversely through the shaft coupling 9, the spline shaft 10 drives the driven disc hub 1 to rotate reversely relative to the friction plate 2, until the rotation reaches the reverse torsion limit, then the transmission end torsion detection servo motor 7 drives the forward rotation to reset, in the process, the transmission end torque sensor 8 records the reverse torque and makes a judgment;

[0062] Step eight: repeat steps six-seven twice, and record the measurement data of the transmission end torque sensor 8 in the last step six-seven;

[0063] Step nine: complete the detection, and draw the clutch torsion characteristic curve according to the measurement data of steps five and eight.

[0064] Further settings:

[0065] In the above steps three, four, six, and seven, the driving end torsion detection servo motor 11 and the transmission end torsion detection servo motor 7 rotate at different angular accelerations α1 or α2 in the forward and reverse rotation, where α 1min ≤α1≤α 1max , α 2min ≤α2≤α 2max , α 1max <α 2min , so that the driven disc to be measured generates different sizes of hysteresis torque when working in the forward and reverse directions, thereby realizing the torsion characteristic detection of the variable-damping clutch damper.

[0066] In step three, the driving end torsion detection servo motor 11 drives the friction plate 2 to rotate forward through the rotating disc 5, before the friction plate 2 rotates to the power output boundary position θ qz 1 , the driving end torsion detection servo motor 11 slowly loads (the motor rotates at an angular acceleration α1, which satisfies H qz1 = J(α 1min ~ α 1max )), so that the clutch generates a smaller hysteresis torque, and when the friction plate 2 rotates to the power output boundary position θ qz 1 and the forward torsion limit position θqz 2 Between these points, the drive-end torsion detection servo motor 11 is rapidly loaded (the motor rotates with angular acceleration α2, satisfying H...). qz2 =J(α) 2min ~α 2max This causes the clutch to generate a large hysteresis torque.

[0067] Furthermore, in step three, at the positive torsional limit position θ of friction plate 2... qz 2 During the reverse reset process towards the initial position θ0, when friction plate 2 rotates to the positive torsional limit position θ qz 2 The dividing point between power output and θ qz 1 Between these points, the drive-end torsion detection servo motor 11 quickly unloads (the motor rotates with angular acceleration -α2, satisfying H...). qf2 =-J(α) 2min ~α 2max This causes the clutch to generate a large hysteresis torque, at the automatic force output dividing position θ of friction plate 2. qz 1 When the motor rotates back to the initial position θ0, the torsion detection servo motor 11 at the drive end slowly unloads (the motor rotates with angular acceleration -α1, satisfying H). qf1 =-J(α) 1min ~α 1max This causes the clutch to produce a smaller hysteresis torque.

[0068] In step four, the drive-end torsion detection servo motor 11 drives the friction plate 2 to rotate in the opposite direction via the turntable 5, from the initial position θ0 to the reverse torsion limit position θ. qf 2 During the process, the torsion detection servo motor 11 at the drive end is slowly loaded (the motor rotates with angular acceleration -α1, satisfying H). qf3 =-J(α) 1min ~α 1max This causes the clutch to produce a smaller hysteresis torque.

[0069] Furthermore, in step four, at the self-reverse torsional limit position θ of friction plate 2... qf 2 During the process of resetting to the initial position θ0 in the forward direction, the torsion detection servo motor 11 at the drive end is slowly unloaded (the motor rotates with angular acceleration α1, satisfying H). qz3 =J(α) 1min ~α 1max This causes the clutch to produce a smaller hysteresis torque.

[0070] In step six, the transmission end torsion detection servo motor 7 drives the driven disc hub 1 to rotate in the forward direction, from the initial position θ0 to the forward torsion limit position θ. cz 2 During the process, the transmission end torsion detection servo motor 7 is slowly loaded (the motor rotates with angular acceleration α1, satisfying H). cz3 =J(α) 1min ~α1max This causes the clutch to produce a smaller hysteresis torque.

[0071] Furthermore, in step six, the transmission end torsion detection servo motor 7 drives the driven disc hub 1 to rotate from the positive torsion limit position θ. cz 2 During the reverse rotation reset process towards the initial position θ0, the transmission end torsion detection servo motor 7 slowly unloads (the motor rotates with angular acceleration -α1, satisfying H...). cf3 =-J(α) 1min ~α 1max This causes the clutch to produce a smaller hysteresis torque.

[0072] In step seven, the transmission end torsion detection servo motor 7 drives the driven disc hub 1 to rotate in the opposite direction, from the initial position θ0 to the power transmission dividing position θ. cf 1 During the rotation, the transmission end torsion detection servo motor 7 is slowly loaded (the motor rotates with angular acceleration -α1, satisfying H...). cf1 =-J(α) 1min ~α 1max This causes the clutch to generate a smaller hysteresis torque, at the automatic force transmission dividing position θ of the driven disc hub 1. cf 1 To the reverse torsional limit position θ cf 2 During the rotation, the transmission end torsion detection servo motor 7 is rapidly loaded (the motor rotates with an angular acceleration of -α2, satisfying H...). cf2 =-J(α) 2min ~α 2max This causes the clutch to generate a large hysteresis torque.

[0073] Furthermore, in step seven, at the self-reverse torsional limit position θ of the driven hub 1... cf 2 When the driven hub 1 is at the initial position θ0 and rotates back to reset in the forward direction, it is at the reverse torsional limit position θ. cf 2 To the power transmission dividing position θ cf 1 During the rotation, the transmission end torsion detection servo motor 7 is quickly unloaded (the motor rotates with angular acceleration α2, satisfying H... cz2 =J(α) 2min ~α 2max This causes the clutch to generate a large hysteresis torque, automatically transmitting force at the dividing position θ. cf 1 During the rotation to the initial position θ0, the transmission end torsion detection servo motor 7 slowly unloads (the motor rotates with angular acceleration α1, satisfying H). cz1 =J(α) 1min ~α 1max This causes the clutch to produce a smaller hysteresis torque.

[0074] As an optional application example, patent EP3104038A1 discloses a variable-damping type clutch damper device, the torsional characteristics of which can be tested using the damper testing device of the present embodiment.

[0075] Although embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, alternatives, and variations can be made thereto without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. A variable drive end variable damping shock absorber test apparatus characterized by, For testing the torque characteristics of clutch damper, the test object is the driven plate with damper in the clutch, the driven plate, the driven plate hub and the friction plate can rotate relative to each other, the device comprises: A rotating assembly, the pressure plate and the rotating disc of the rotating assembly are coaxial and detachably assembled, the disc body is horizontal, and a mounting groove suitable for the outer contour size of the driven plate is formed between them, the driven plate is coaxial with the rotating assembly and is built-in in the mounting groove, is clamped between the pressure plate and the rotating disc, the friction plate and the lower end surface of the pressure plate and the upper end surface of the rotating disc are in close contact respectively, the pressure plate is provided with a central hole, and the spline shaft sleeve of the driven plate is exposed through the central hole; A vertical moving assembly for driving the vertical reciprocating linear displacement of the transmission and torsion detection assembly as a whole; The transmission and torsion detection assembly is used as a transmission end input to simulate the power transmission between the transmission and the driven plate, is hoisted as a whole above the rotating assembly, and comprises a transmission end torsion detection servo motor, a transmission end torque sensor, a shaft coupling and a spline shaft which are coaxially arranged and assembled with the rotating assembly, the transmission end torque sensor is arranged between the output end of the transmission end torsion detection servo motor and the shaft coupling, is connected with the spline shaft sleeve through the shaft coupling, and the sensing end of the transmission end torque sensor is connected with the shaft coupling; the transmission and torsion detection assembly as a whole is driven by the vertical moving assembly, can be lowered to be connected by meshing with the spline shaft sleeve of the driven plate below, and forms a synchronous rotary member with the driven plate hub of the driven plate; A power output and torsion detection assembly is used as an engine end input to simulate the power output to the driven plate, is hoisted as a whole below the rotating assembly, and comprises a driving end torsion detection servo motor, a flange and a driving end torque sensor which are coaxially arranged and assembled with the rotating assembly, the output end of the driving end torsion detection servo motor faces upwards, the driving end torque sensor is arranged between the output end and the flange, is coaxially assembled with the rotating disc above through the flange, forms a synchronous rotary member with the rotating disc after assembly, drives the rotating disc to rotate, relies on the friction force between the pressure plate and the friction plate and the rotating disc and the friction plate to drive the friction plate to rotate, and the sensing end of the driving end torque sensor is connected with the flange; During testing, the transmission and torsion detection assembly is connected by meshing with the spline shaft sleeve of the driven plate, and the transmission end torsion detection servo motor and the driving end torsion detection servo motor are used one by one.

2. The variable drive end variable damping damper test device according to claim 1, characterized in that: When the power output and torsion detection assembly simulates the power output of the engine to the driven disc, the driving end torsion detection servo motor drives the driving disc to rotate forward or reverse, and the friction force between the pressure plate and the friction plate and the friction disc and the friction plate drives the friction plate to rotate forward to the positive torsion limit and then reverse to the initial position, or drives the friction plate to rotate reverse to the reverse torsion limit and then forward to the initial position. During the test, the driving end torque sensor real-time collects the positive and reverse torque values. During the process of the driving end torsion detection servo motor rotating forward and then reverse from the initial position, the positive rotation process is first slowly loaded and then quickly loaded, and the reverse rotation process is first quickly unloaded and then slowly unloaded. During the process of the driving end torsion detection servo motor rotating reverse and then forward from the initial position, the reverse rotation process is slowly loaded, and the forward rotation process is slowly unloaded. When the transmission and torsion detection assembly simulates the power transmission between the driven disc and the transmission, the driving end torsion detection servo motor drives the driven disc hub to rotate forward to the positive torsion limit and then reverse to the initial position, or drives the driven disc hub to rotate reverse to the reverse torsion limit and then forward to the initial position. During the test, the driving end torque sensor real-time collects the positive and reverse torque values. During the process of the driving end torsion detection servo motor rotating reverse and then forward from the initial position, the reverse rotation process is first slowly loaded and then quickly loaded, and the forward rotation process is first quickly unloaded and then slowly unloaded. During the process of the driving end torsion detection servo motor rotating forward and then reverse from the initial position, the forward rotation process is slowly loaded, and the reverse rotation process is slowly unloaded.

3. The variable drive end variable damping shock absorber test apparatus of claim 1 wherein: The transmission and torsion detection assembly simulates the power transmission between the driven disc and the transmission for 2-3 times, and records the positive and reverse torque values collected by the driving end torque sensor in real time during the last simulation.

4. The variable drive end variable damping shock absorber test apparatus of claim 1 wherein: The power output and torsion detection assembly simulates the power output of the engine to the driven disc for 2-3 times, and records the positive and reverse torque values collected by the driving end torque sensor in real time during the last simulation.

5. The variable driving end variable damping shock absorber test device according to claim 1, characterized in that: When the driving end torsion detection servo motor drives the friction plate to rotate forward to the positive torsion limit position and then rotate reversely to reset, in the forward rotation process, from the initial position θ0 to the power output boundary position θ qz1 , the motor is slowly loaded to rotate with angular acceleration α1, and the relationship H qz1 =J(α 1min ~α 1max ) is met, from the power output boundary position θ qz1 to the positive torsion limit position θ qz2 , the motor is quickly loaded to rotate with angular acceleration α2, and the relationship H qz2 =J(α 2min ~α 2max ) is met, in the reverse rotation reset process, from the positive torsion limit position θ qz2 to the power output boundary position θ qz1 , the motor is quickly unloaded to rotate with angular acceleration -α2, and the relationship H qf2 =-J(α 2min ~α 2max ) is met, from the power output boundary position θ qz1 to the initial position θ0, the motor is slowly unloaded to rotate with angular acceleration -α1, and the relationship H qf1 =-J(α 1min ~α 1max ) is met; when the driving end torsion detection servo motor drives the friction plate to rotate reversely to the reverse torsion limit position and then rotate forward to reset, in the reverse rotation process, from the initial position θ0 to the reverse torsion limit position θ qf2 , the motor is slowly loaded to rotate with angular acceleration -α1, and the relationship H qf3 =-J(α 1min ~α 1max ) is met, in the forward rotation reset process, from the reverse torsion limit position θ qf2 to the initial position θ0, the motor is slowly unloaded to rotate with angular acceleration α1, and the relationship H qz3 =J(α 1min ~α 1max ) is met; wherein H qz1 , H qz2 , H qz3 , H qf1 , H qf2 , H qf3 are the driving end torsion detection servo motor torques, J is the moment of inertia, α 1min ≤α1≤α 1max , α 2min ≤α2≤α 2max , α 1max <α 2min ; When the driving end torsion detection servo motor drives the driven disc hub to first reverse rotate to the reverse torsion limit position and then forward rotate to reset, in the reverse rotation process, from the initial position θ0 to the power transmission boundary position θ cf1 , the motor is slowly loaded, rotates with angular acceleration -α1, and satisfies the relationship H cf1 =-J(α 1min -α 1max ), from the power transmission boundary position θ cf1 to the reverse torsion limit position θ cf2 , the motor is quickly loaded, rotates with angular acceleration -α2, and satisfies the relationship H cf2 =-J(α 2min -α 2max ), in the forward rotation reset process, from the reverse torsion limit position θ cf2 to the power transmission boundary position θ cf1 , the motor is quickly unloaded, rotates with angular acceleration α2, and satisfies the relationship H cz2 =J(α 2min -α 2max ), from the power transmission boundary position θ cf1 to the initial position θ0, the motor is slowly unloaded, rotates with angular acceleration α1, and satisfies the relationship H cz1 =J(α 1min -α 1max ); when the driving end torsion detection servo motor drives the driven disc hub to first forward rotate to the forward torsion limit position and then reverse rotate to reset, in the forward rotation process, from the initial position θ0 to the forward torsion limit position θ cz2 , the motor is slowly loaded, rotates with angular acceleration α1, and satisfies the relationship H cz3 =J(α 1min -α 1max ), in the reverse rotation reset process, from the forward torsion limit position θ cz2 to the initial position θ0, the motor is slowly unloaded, rotates with angular acceleration -α1, and satisfies the relationship H cf3 =-J(α 1min -α 1max ); wherein H qc1 , H qc2 , H qc3 , H qc1 , H qc2 , H qc3 are the driving end torsion detection servo motor torques, J is the moment of inertia, α 1min ≤α1≤α 1max , α 2min ≤α2≤α 2max , α 1max <α 2min .

6. The variable drive end variable damping shock absorber test apparatus of claim 1 wherein the apparatus The whole is installed on the workbench; the upper end of the workbench is provided with an H-shaped stand, a pair of vertical plates of the stand are symmetrically arranged on both sides of the rotating assembly, are fixedly arranged on the upper end of the workbench, the horizontal plate is horizontally arranged, the two plate ends are driven by the linear displacement driving device on the vertical plate and are vertically and slidably arranged between the pair of vertical plates, and the transmission and torsion detection assembly is integrally installed on the middle part of the horizontal plate; the rotating assembly is installed on the upper end of the workbench table, and the power output and torsion detection assembly is installed below the workbench table.

7. The variable drive end variable damping shock absorber test apparatus of claim 6 wherein: The linear displacement driving device is a pneumatic linear slide table arranged on the vertical plate, the two ends of the horizontal plate are connected with the sliders of the two pneumatic linear slide tables, and the horizontal plate can vertically slide along the slide rail which is driven by the air cylinder of the pneumatic linear slide table.

8. The variable drive end variable damping shock absorber test apparatus of claim 1 wherein: The device is provided with a mounting slot hole for mounting the rotating disc, the rotating disc is embedded in the mounting slot hole in a matched mode, and the rotating disc is coupled and contacted with the outer edge of the mounting slot hole through a circle of L-shaped step faces on the bottom, is supported through a deep groove ball bearing in the radial direction, and is supported through a thrust cylindrical roller bearing in the axial direction.

9. The variable drive end variable damping shock absorber test apparatus of claim 1 wherein: The pressing disc and the rotating disc are detachably fastened through a plurality of bolts which are distributed in a circumferential equidistant interval, and the height position relative to the rotating disc is adjustable through the bolts.

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