Flexible connection service life test tool

Abstract

The invention discloses a flexible connection life test tool, which is characterized in that a plurality of groups of movable connection units capable of transversely moving are arranged on a supporting platform, lifting assemblies are arranged on the movable connection units, clamp assemblies are connected onto the lifting assemblies, the lifting assemblies can drive the clamp assemblies to reciprocate up and down, and connection surfaces are arranged on the clamp assemblies; during testing, the fixed part and the moving part of the workpiece to be tested are connected to the connecting surfaces of the clamp assemblies of different movable connecting units, and the movable connecting units connected with the moving part drive the moving part to reciprocate up and down through the lifting assembly, so that the service life of the workpiece to be tested is detected. A plurality of groups of movable connection units are arranged on the supporting platform, the fixed part and the moving part of the test workpiece are respectively connected to the corresponding movable connection units, the movable connection units connected with the moving part of the test workpiece are driven to work, the moving part is driven to reciprocate up and down, the service life of the flexible connection can be effectively detected, the structure is simple, and the test efficiency is high. Operation is simple, and testing efficiency is high.

Description

Technical Field

[0001] This invention relates to the field of power switch testing technology, and in particular to a tooling for testing the lifespan of flexible connections. Background Technology

[0002] Switchgear is a crucial component of power systems. It typically includes a terminal block and an arc-extinguishing device. The terminal block and the moving end of the arc-extinguishing device are usually electrically connected via a flexible connector to form a conductive circuit. Since the flexible connector connects to the moving end of the arc-extinguishing device, it reciprocates with the device's movement. Therefore, the flexible connector's ability to withstand this reciprocating motion determines its reliability. This ability is related to its lifespan; in other words, the lifespan of the flexible connector determines its reliability. To ensure reliability, the flexible connector's lifespan must meet the performance requirements of the switchgear. Currently, there is no readily available and feasible equipment for testing the lifespan of flexible connectors. Lifespan can usually only be theoretically calculated through stress analysis, and the actual lifespan cannot be effectively measured. Therefore, an accurate assessment of the true lifespan of flexible connectors is not possible. Summary of the Invention

[0003] In response to the lack of existing flexible connection life testing equipment, the applicant provides a flexible connection life testing fixture that accurately measures the true life of flexible connections. It has a simple structure, is easy to operate, and has high testing efficiency.

[0004] The technical solution adopted in this invention is as follows: A flexible connection life testing fixture includes a support platform with several sets of laterally movable connecting units. Each movable connecting unit is equipped with an upgrading component, and a lifting component is connected to a clamping component. The lifting component can drive the clamping component to reciprocate up and down, and the clamping component is provided with a connecting surface. During testing, the fixed part and the moving part of the test workpiece are connected to the connecting surfaces of the clamping components of different movable connecting units. The movable connecting unit connected to the moving part drives the moving part to reciprocate up and down through the lifting component to detect the life of the test workpiece.

[0005] As a further improvement to the above technical solution: The support platform is equipped with a fixed connection bracket. During testing, the fixed part of the test workpiece can be connected to the fixed connection bracket, and the moving part can be connected to the connection surface of the fixture assembly of the movable connection unit.

[0006] The clamping body of the clamping assembly is provided with multiple connecting surfaces in different positions and / or orientations.

[0007] The clamp is a cube, with its top and bottom surfaces, left and right sides, and front side serving as connecting surfaces.

[0008] The lifting assembly comprises a lifting screw assembly and a lifting motor, the lifting screw assembly comprises a screw rod and a roller, the roller is sleeved on the screw rod, the screw rod is connected with the lifting motor and is driven by the lifting motor to rotate reversely, the clamping body of the clamping assembly is sleeved on the roller through a sliding table and reciprocates up and down on the screw rod along with the roller, and the lifting motor is a stepping motor or a servo motor.

[0009] The clamping body of the clamping assembly is provided with a sliding block, and the lifting seat of the movable connection unit is correspondingly provided with a vertical bar which is movably connected with the sliding block.

[0010] The movable connection unit is connected to the support platform through a horizontal moving structure, the horizontal moving structure comprises a horizontal moving sliding rail and a horizontal moving pulley assembly, the horizontal moving sliding rail is arranged on the support platform, the horizontal moving pulley assembly is arranged on the lifting seat of the movable connection unit, and the horizontal moving pulley assembly is slidably arranged on the horizontal moving sliding rail; a plurality of rollers are arranged on the sliding plate of the horizontal moving pulley assembly, and the plurality of rollers are arranged in an up-and-down staggered manner, a part of the rollers abut against the rail surface on the lower side of the horizontal moving sliding rail, and the other part of the rollers abut against the rail surface on the upper side of the horizontal moving sliding rail.

[0011] The horizontal moving pulley assembly is provided with a locking structure, the locking structure comprises an adjusting screw rod and a locking block, the adjusting screw rod is inserted into the sliding plate, and the locking block is sleeved on the adjusting screw rod; the locking block is provided with a locking groove on the upper and lower sides of the horizontal moving sliding rail, and the locking groove abuts against the rail surface of the horizontal moving sliding rail when the locking block is locked.

[0012] The horizontal moving pulley assembly is provided with a locking structure, the locking structure comprises an adjusting screw rod and a locking block, the adjusting screw rod is inserted into the sliding plate, and the locking block is sleeved on the adjusting screw rod; the locking block is provided with a locking groove on the upper and lower sides of the horizontal moving sliding rail, and the locking groove abuts against the rail surface of the horizontal moving sliding rail when the locking block is locked.

[0013] The support platform is provided with a controller, a power supply and a plurality of motor drivers, the controller and the motor drivers are connected with the power supply, the motor drivers are connected with the controller, and the motor drivers are connected with the driving motors of the movable connection units; the controller, the power supply and the motor drivers are covered with a cover, and the cover is provided with a switch.

[0014] The beneficial effects of the present application are as follows: The present application is provided with a plurality of movable connection units on the support platform, the movable connection units can be adjusted in position through horizontal movement and adapted to the test workpiece, the fixed part and the moving part of the test workpiece are connected to the corresponding movable connection units respectively, the working movable connection unit connected to the driving test workpiece moving part is driven to reciprocate up and down, so that the service life of the soft connection can be effectively detected, the structure is simple, the operation is simple, and the test efficiency is high; the real service life of the soft connection can be accurately evaluated according to the detection result, and the reliability of the soft connection is ensured.

[0015] The application is further provided with a fixed connecting support on the supporting platform, and the fixed part of the test workpiece can also be connected to the fixed connecting support during testing; through the connecting combination of the movable connecting unit (connecting the fixed part) - movable connecting unit (connecting the moving part) or the fixed connecting support (connecting the fixed part) - movable connecting unit (connecting the moving part), whether it is a transversely arranged soft connection or a vertically arranged soft connection, the effective detection of the service life can be carried out, and the soft connection detection of various different working conditions can be applied, and the application range is wide.

[0016] The fixture assembly of the movable connecting unit of the application is provided with a plurality of connecting surfaces with different positions and / or directions, and the positions or directions of the fixed part and the moving part of the soft connection test workpiece can be connected through appropriate connecting surfaces, and the movable connecting unit can be adapted to soft connections with different lengths through horizontal movement, and is suitable for the detection of soft connections of various specifications, has a wide application range and high flexibility. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a perspective structural schematic view of one view of the application.

[0018] Figure 2 It is another perspective structural schematic view of the application.

[0019] Figure 3 It is a structural schematic view of the application after the cover is removed.

[0020] Figure 4 It is a sectional view of the application.

[0021] Figure 5 It is Figure 4 It is an enlarged view of A in the middle.

[0022] Figure 6 It is a structural schematic view of the movable connecting unit, a) is a perspective view of one view, and b) is a perspective view of another view.

[0023] Figure 7 It is a structural schematic view of the upper horizontal wheel sliding assembly, a) is a perspective view, and b) is a sectional view.

[0024] Figure 8 It is a structural schematic view of the fixture, a) is a perspective view of one view, and b) is a perspective view of another view.

[0025] Figure 9 It is a schematic view of test example one of the application.

[0026] Figure 10 It is a schematic view of test example two of the application.

[0027] Figure 11 It is a schematic view of test example three of the application.

[0028] Figure 12 Schematic diagram of test example four of the present application.

[0029] In the figure: 10, base; 20, support seat; 30, horizontal moving slide rail; 40, movable connection unit; 50, fixed connection support; 60, controller; 70, power supply; 80, motor driver; 90, cover; 91, switch; 100, test workpiece; 101, fixed part; 102, moving part; 1, lifting seat; 11, seat body; 12, top plate; 13, bottom plate; 14, vertical bar; 2, horizontal moving pulley assembly; 2a, upper horizontal moving wheel slide assembly; 2b, lower horizontal moving wheel slide assembly; 21, slide plate; 211, long circular hole; 22, rotating shaft; 23, roller; 24, adjusting screw; 25, locking block; 251, locking groove; 3, lifting screw assembly; 31, screw rod; 32, roller shaft; 4, lifting motor; 5, clamp assembly; 51, clamping part; 511, plug-in slot; 512, connecting surface; 52, sliding table; 53, locking screw; 54, sliding block. DETAILED DESCRIPTION

[0030] The specific embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0031] For ease of illustration, an XYZ rectangular coordinate system is indicated in the drawings, the X axis is the left-right horizontal direction, the Y axis is the front-rear horizontal direction, and the Z axis is the vertical direction, and the X axis, the Y axis, and the Z axis are orthogonal to each other. The naming and setting of the X, Y, and Z axes are for the purpose of fully illustrating the relevant structures and do not have limiting nature. Slight adjustment of the horizontal direction and the vertical direction also falls within the protection scope of the present application.

[0032] As Figures 1 to 3As shown, the base 10 of the present application is vertically arranged along the Z direction parallel to the XY plane, and a support base 20 is arranged parallel to the ZX plane. The base 10 and the support base 20 constitute a support platform. A plurality of sets of movable connection units 40 are arranged on the front surface of the support base 20. A fixed connection bracket 50 is arranged on the base 10 in front of the plurality of sets of movable connection units 40. A controller 60, a power supply 70, and a plurality of motor drivers 80 are arranged on the back surface of the support base 20. The controller 60 and the motor drivers 80 are connected to the power supply 70. The power supply 70 supplies power to the controller 60 and the motor drivers 80. The motor drivers 80 are connected to the controller 60, and the controller 60 controls the operation of the motor drivers 80. The controller 60, the power supply 70, and the motor drivers 80 are covered by a cover 90 for protection. The control panel of the controller 60 is exposed from the cover 90 for easy operation. A switch 91 is arranged on the cover 90 for controlling the opening and closing of the power supply 70. The power supply socket of the switch 91 can adopt a general lower-shaped wire harness, which is detachable and facilitates the movement of the test tool. When the test tool is not in use, the wire harness can also be stored, which is more portable and safe. The controller 60 has a program setting function, which can set the motor direction, speed, timing automatic movement, idle running, and other functions. The program can also be saved, edited, read, deleted, and the like.

[0033] As shown in Figure 1 , Figure 4 , a plurality of sets of movable connection units 40 are connected to the horizontal moving slide rails 30 and can move left and right along the X direction. The movable connection units 40 can move left and right on the horizontal moving slide rails 30 to adjust the position of the movable connection units 40 or the horizontal distance between adjacent two sets of movable connection units 40.

[0034] As shown in Figures 4 to 6 , each set of movable connection units 40 includes a lifting seat 1, a horizontal moving pulley assembly 2, a lifting lead screw assembly 3, a lifting motor 4, and a clamp assembly 5. The lifting seat 1 is connected to the horizontal moving slide rail 30 through the horizontal moving pulley assembly 2. The lifting lead screw assembly 3 is vertically arranged on the lifting seat 1 along the Z direction. The lifting lead screw assembly 3 is connected to the lifting motor 4. The lifting motor 4 is connected to the motor driver 80 and is driven by the motor driver 80. The clamp assembly 5 is sleeved on the lifting lead screw assembly 3 and can be driven by the lifting lead screw assembly 3 to move up and down reciprocally.

[0035] As shown in Figure 6As shown, the lifting seat 1 of the movable connecting unit 40 comprises a seat body 11 vertically arranged along the Z direction, the seat body 11 faces the back of the transverse sliding rail 30, and the upper transverse pulley assembly 2a and the lower transverse pulley assembly 2b are arranged on the seat body 11 correspondingly to the upper and lower transverse sliding rails 30 respectively, the upper transverse pulley assembly 2a is movably slidably arranged on the upper transverse sliding rail 30, and the lower transverse pulley assembly 2b is movably slidably arranged on the lower transverse sliding rail 30. The upper transverse pulley assembly 2a and the lower transverse pulley assembly 2b each comprise a sliding plate 21, a plurality of rollers 23 are arranged on the sliding plate 21, each roller 23 is connected to the sliding plate 21 through an axis 22, the roller 23 is rotatable about the axis 22, and the plurality of rollers 23 are arranged staggeredly up and down, for example Figure 5 As shown, a part of the rollers 23 abut against the rail surface on the lower side of the transverse sliding rail 30, and another part of the rollers 23 abut against the rail surface on the upper side of the transverse sliding rail 30, the staggered rollers 23 not only support the transverse pulley assembly 2, but also limit the Z direction of the transverse pulley assembly 2, so as to prevent the transverse pulley assembly 2 from moving up and down along the Z direction, and ensure the stability and reliability of the transverse movement of the movable connecting unit 40. Figure 7 As shown, in the embodiment, the upper transverse pulley assembly 2a is provided with a locking structure, the locking structure comprises an adjusting screw 24 and a locking block 25, the adjusting screw 24 penetrates the sliding plate 21 along the Z direction, the locking block 25 is sleeved on the adjusting screw 24 and extends towards the transverse sliding rail 30 along the Y direction, a long circular hole 211 is formed in the sliding plate 21, the locking block 25 extends from the long circular hole 211 and is movable up and down in the long circular hole 211. The locking block 25 is provided with an arc-shaped locking groove 251 towards the upper and lower rail surfaces of the transverse sliding rail 30, when the movable connecting unit 40 is transversely moved to a specified position, the adjusting screw 24 is rotated to drive the locking block 25 to move downwards or upwards until the locking groove 251 of the locking block 25 abuts against the rail surface of the transverse sliding rail 30, so as to lock the movable connecting unit 40 at the specified position. In other embodiments, the locking structure can also be arranged on the lower transverse pulley assembly 2b to be locked from the lower transverse sliding rail 30, or the locking structure can be arranged on both the upper transverse pulley assembly 2a and the lower transverse pulley assembly 2b to be locked from both the upper transverse sliding rail 30 and the lower transverse sliding rail 30.

[0036] As shown, Figures 4 to 6As shown, the top of the seat body 11 is provided with a horizontal top plate 12, the bottom is provided with a horizontal bottom plate 13, the top end of the lifting screw assembly 3 is inserted into the top plate 12, the lifting motor 4 is fixedly connected to the bottom plate 13, the driving shaft of the lifting motor 4 passes through the bottom plate 13 and is connected to the bottom end of the lifting screw assembly 3 through a shaft coupling. The lifting screw assembly 3 comprises a vertical screw rod 31 and a roller 32 sleeved on the screw rod 31 and capable of being lifted by the screw rod 31. The lifting motor 4 drives the screw rod 31 to reciprocate forward and backward by positive and negative rotation, so as to drive the roller 32 to reciprocate up and down within a specified stroke. The lifting motor 4 adopts a stepping motor, which has high control accuracy, short response time for starting, stopping and turning, and is suitable for high-frequency short-distance motion requirements. The lifting motor 4 can also adopt a servo motor, which has more power and faster speed.

[0037] As shown in Figures 4 to 6 The clamp body 51 of the clamp assembly 5 is inserted with a sliding table 52, the clamp body 51 and the sliding table 52 are locked and fixed by a locking screw 53, the sliding table 52 is sleeved on the roller 32 of the lifting screw assembly 3 and is fixedly connected to the roller 32, and the clamp body 51 can reciprocate up and down with the roller 32 through the sliding table 52. The side surface of the sliding table 52 facing the seat body 11 of the lifting seat 1 is provided with a sliding block 54, and a vertical bar 14 is correspondingly provided on the seat body 11. The sliding block 54 is slidably arranged on the vertical bar 14, and when the clamp body 51 reciprocates up and down with the roller 32, the sliding block 54 reciprocates up and down along the vertical bar 14. The sliding cooperation between the sliding block 54 and the vertical bar 14 can provide guidance for the up-and-down reciprocating movement of the clamp body 51, avoid shaking of the clamp body 51 during the up-and-down reciprocating movement, and improve the stability and reliability of the movement.

[0038] As shown in Figure 8 The clamp body 51 is a square block, and its Z-directional orthographic projection is a "concave" shape. The concave part faces the lifting screw assembly 3 and constitutes an insertion groove 511, and the sliding table 52 is inserted into the insertion groove 511. The Z-directional top surface and bottom surface and the X-directional two side surfaces of the clamp body 51 are all connecting surfaces 512, and a plurality of connecting holes are formed in the connecting surfaces 512. During use, the top surface, the bottom surface or any side surface can be selected as the connecting surface 512 and connected to the test workpiece 100 according to actual requirements. In other embodiments, the front side surface (the surface opposite to the insertion groove 511) of the clamp body 51 can also be used as the connecting surface 512 and connected to the test workpiece 100. That is, on the clamp body 51, except for the side surface facing the lifting seat 1, the other surfaces can be used as the connecting surface 512 and connected to the test workpiece 100.

[0039] When the test tool of the present application is used, the lateral displacement positions of each group of movable connecting units 40 are adjusted to be suitable for the length of the soft connecting test workpiece 100, the moving part 102 of the soft connecting test workpiece 100 is connected to the clamp assembly 5 of one group of movable connecting units 40, and the fixed part 101 of the test workpiece 100 is connected to the clamp assembly 5 of the adjacent movable connecting unit 40 (one fixed part 101 is connected to the clamp assembly 5 of one group of movable connecting units 40) or the fixed connecting support 50. During the life test: the fixed part 101 remains stationary, the controller 60 drives the lifting motor 4 of the movable connecting unit 40 connected to the moving part 102 through the motor driver 80 to perform the cyclic reciprocating motion of forward and reverse rotation, so as to drive the moving part 102 of the test workpiece 100 to perform the cyclic reciprocating motion up and down through the lifting screw assembly 3 and the clamp assembly 5, and perform the life detection.

[0040] The following gives several different test examples.

[0041] Test example one: the test workpiece 100 has one end as the fixed part 101 and the other end as the moving part 102, the fixed part 101 and the moving part 102 are perpendicular to each other, the fixed part 101 is parallel to the YZ plane, and the moving part 102 is parallel to the XY plane. During the test, two groups of adjacent movable connecting units 40 are selected to connect the test workpiece 100, the two groups of movable connecting units 40 are laterally displaced to the specified position and locked, the fixed part 101 of the test workpiece 100 is connected to the connecting surface 512 on the side surface of the clamp body 51 of one group of movable connecting units 40, and the moving part 102 of the test workpiece 100 is connected to the connecting surface 512 on the top surface or the bottom surface of the clamp body 51 of the other group of movable connecting units 40.

[0042] Test example two: different from test example one, the fixed part 101 and the moving part 102 of the test workpiece 100 of the present test example are parallel to each other and parallel to the XY plane, and the Z-direction heights of the fixed part 101 and the moving part 102 are different. During the test, two groups of adjacent movable connecting units 40 are selected to connect the test workpiece 100, the two groups of movable connecting units 40 are laterally displaced to the specified position and locked, the fixed part 101 of the test workpiece 100 is connected to the connecting surface 512 on the bottom surface or the top surface of the clamp body 51 of one group of movable connecting units 40, and the moving part 102 of the test workpiece 100 is connected to the connecting surface 512 on the top surface or the bottom surface of the clamp body 51 of the other group of movable connecting units 40.

[0043] Test example three: Different from the previous two test examples, the test workpiece 100 of this test example has two fixed parts 101 and one moving part 102, the fixed parts 101 are located at both ends, and the moving part 102 is located in the middle, the fixed parts 101 and the moving part 102 are parallel and different in height. During testing, three groups of adjacent movable connecting units 40 are selected for connecting the test workpiece 100, the three groups of movable connecting units 40 are transversely moved to the specified position and locked, the fixed parts 101 at both ends of the test workpiece 100 are respectively connected to the connecting surface 512 on the bottom surface or the top surface of the clamping body 51 of the two groups of movable connecting units 40 on the outside, and the moving part 102 of the test workpiece 100 is connected to the connecting surface 512 on the top surface or the bottom surface of the clamping body 51 of the movable connecting unit 40 in the middle.

[0044] Test example four: The test workpieces 100 of test examples one to three are all soft connections arranged in the transverse direction, and the test workpiece 100 of this test example is a soft connection arranged in the vertical direction, the fixed part 101 and the moving part 102 of the test workpiece 100 are arranged vertically up and down. During testing, one group of movable connecting units 40 and fixed connecting supports 50 are selected for connecting the test workpiece 100, the movable connecting unit 40 is transversely moved to the specified position and locked, the fixed part 101 of the test workpiece 100 is connected to the fixed connecting support 50, and the moving part 102 of the test workpiece 100 is connected to the connecting surface 512 of the movable connecting unit 40.

[0045] The above description is an explanation of the present application, not a limitation of the present application, and the present application can be modified in any form without departing from the spirit of the present application.

Claims

1. A soft connection life test fixture, characterized by: A plurality of groups of transversely movable movable connection units (40) are arranged on the support platform, and an upgrading assembly is arranged on the movable connection unit (40), and a clamp assembly (5) is connected to the lifting assembly, the lifting assembly can drive the clamp assembly (5) to reciprocate up and down, and a connecting surface (512) is arranged on the clamp assembly (5); during testing, the fixed part (101) and the moving part (102) of the test workpiece (100) are connected to the connecting surface (512) of the clamp assembly (5) of different movable connection units (40), and the movable connection unit (40) connected to the moving part (102) drives the moving part (102) to reciprocate up and down through the lifting assembly, so as to detect the service life of the test workpiece (100).

2. The flex life test fixture of claim 1, wherein: A fixed connection support (50) is arranged on the support platform, and during testing, the fixed part (101) of the test workpiece (100) can be connected to the fixed connection support (50), and the moving part (102) is connected to the connecting surface (512) of the clamp assembly (5) of the movable connection unit (40).

3. The flex life test fixture of claim 1, wherein: A plurality of connecting surfaces (512) with different positions and / or directions are arranged on the clamping body (51) of the clamp assembly (5).

4. The flex life test fixture of claim 3, wherein: The clamping body (51) is a square block, and the top surface and the bottom surface, the left and right side surfaces, and the front side surface are respectively arranged as the connecting surfaces (512).

5. The flexible joint life test fixture of claim 1, wherein: The lifting assembly comprises a lifting screw assembly (3) and a lifting motor (4), the lifting screw assembly (3) comprises a screw rod (31) and a roller shaft (32), the roller shaft (32) is sleeved on the screw rod (31), the screw rod (31) is connected with the lifting motor (4) and is driven by the lifting motor (4) to rotate in opposite directions; the clamping body (51) of the clamp assembly (5) is sleeved on the roller shaft (32) through a sliding table (52) and reciprocates up and down on the screw rod (31) along with the roller shaft (32); the lifting motor (4) is a stepping motor or a servo motor.

6. The flexible joint life test fixture of claim 1, wherein: A sliding block (54) is arranged on the clamping body (51) of the clamp assembly (5), and a vertical bar (14) is correspondingly arranged on the lifting seat (1) of the movable connection unit (40), and the sliding block (54) is movably sleeved on the vertical bar (14).

7. The flexible joint life test fixture of claim 1, wherein: The movable connection unit (40) is connected to the support platform through a transverse movement structure; the transverse movement structure comprises a transverse movement sliding rail (30) and a transverse movement pulley assembly (2), the transverse movement sliding rail (30) is arranged on the support platform, and the transverse movement pulley assembly (2) is arranged on the lifting seat (1) of the movable connection unit (40) and is slidably arranged on the transverse movement sliding rail (30); a plurality of rollers (23) are arranged on the sliding plate (21) of the transverse movement pulley assembly (2), and the plurality of rollers (23) are arranged in an up-and-down staggered manner, a part of the rollers (23) abut against the rail surface on the lower side of the transverse movement sliding rail (30), and the other part of the rollers (23) abut against the rail surface on the upper side of the transverse movement sliding rail (30).

8. The flexible joint life test fixture of claim 7, wherein: The transverse moving pulley assembly (2) is provided with a locking structure, the locking structure comprises an adjusting screw rod (24) and a locking block (25), the adjusting screw rod (24) is inserted on the sliding plate (21), the locking block (25) is sleeved on the adjusting screw rod (24), the locking block (25) is provided with a locking groove (251) on the upper and lower rail surfaces of the transverse moving slide rail (30) respectively, and the locking groove (251) is locked to the rail surface of the transverse moving slide rail (30) when locking.

9. The flexible joint life test fixture of claim 1 or 2, wherein: The support platform is provided with a controller (60), a power supply (70), and a plurality of motor drivers (80), the controller (60) and the motor drivers (80) are connected with the power supply (70), the motor drivers (80) are connected with the controller (60), the motor drivers (80) are connected with the driving motors of the movable connecting units (40); the controller (60), the power supply (70) and the motor drivers (80) are covered with a cover (90), and the cover (90) is provided with a switch (91).

10. The flexible joint life test fixture of claim 1, wherein: ​

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