CN218156822U

CN218156822U - Torsional spring endurance test device

Info

Publication number: CN218156822U
Application number: CN202222382823.8U
Authority: CN
Inventors: 黄李刚; 朱文明; 谢小刚; 陈梅
Original assignee: Nanjing Kangni Mechanical and Electrical Co Ltd
Current assignee: Nanjing Kangni Mechanical and Electrical Co Ltd
Priority date: 2022-08-26
Filing date: 2022-09-07
Publication date: 2022-12-27
Anticipated expiration: 2032-09-07
Also published as: CN115307895A

Abstract

The utility model discloses a torsional spring endurance test device, which comprises a working part for installing a torsional spring to be tested and a transmission part for driving the working part to move repeatedly; the working part comprises a rotating disc connected with the transmission part, a torsional spring mounting disc rigidly connected with the rotating disc and positioned right above the rotating disc, a fixed inner disc sleeved at the periphery of the torsional spring mounting disc, a torsional spring central limiting shaft fixed at the center of the torsional spring mounting disc and used for mounting a torsional spring to be tested, a blocking screw mounting frame fixed on the fixed inner disc and arranged above the torsional spring central limiting shaft, a blocking screw connected with the blocking screw mounting frame and a limiting shaft fixed on the torsional spring mounting disc. The utility model can conveniently adjust the working angle of the torsion spring by adjusting the position of the connecting shaft of the swing arm; the installation angle of the torsion spring is quickly adjusted by adjusting the position of the installation stud; and controlling the frequency of the torsional spring endurance test by adjusting the rotating speed of the motor.

Description

Torsional spring endurance test device

Technical Field

The utility model relates to a durability test device especially relates to a torsional spring durability test device.

Background

Torsion spring structures are designed in many key structures of the railway vehicle door system, such as components of an end unlocking part, a hinged door lock, a mechanism dead lock and the like. Because of the frequent movements of such structures, most torsion springs require a service life of over 60 ten thousand. Because no special equipment for developing the durability test of the torsion spring exists, a common test method is to carry out the automatic door opening and closing running-in test of the vehicle-mounted door system together, because one cycle period of the electric door opening and closing is about 12 seconds, the time of 3 months is needed for completing the 60-ten-thousand running-in test of the torsion spring, and the verification is insufficient due to the insufficient number of samples of the door system level test, so that a component level durability test device which meets torsion springs of different specifications and simultaneously verifies a plurality of samples needs to be developed, and the durability test is rapidly completed.

For example, patent CN211178949U discloses a torsion spring stiffness measuring device, which is used for measuring the torque of a torsion spring, and cannot be used for a torsion spring endurance test, and the device also has the problems that the working angle of the torsion spring cannot be adjusted and the installation angle of the torsion spring cannot be adjusted quickly.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model aims at providing a conveniently adjust torsional spring operating angle and adjust torsional spring installation angle's torsional spring endurance test device fast.

The technical scheme is as follows: the utility model relates to a torsional spring endurance test device, which comprises a working part for installing a torsional spring to be tested and a transmission part for driving the working part to move repeatedly; the working part comprises a rotating disc connected with the transmission part, a torsional spring mounting disc which is rigidly connected with the rotating disc and is positioned right above the rotating disc, a fixed inner disc which is sleeved on the periphery of the torsional spring mounting disc, a torsional spring central limiting shaft which is fixed at the center of the torsional spring mounting disc and is used for mounting a torsional spring to be tested, a blocking screw mounting frame which is fixed on the fixed inner disc and is arranged above the torsional spring central limiting shaft, a blocking screw which is connected with the blocking screw mounting frame, and a limiting shaft which is fixed on the torsional spring mounting disc; the stop screw is used for fixing one torsion arm of the torsion spring to be tested, and the limiting shaft is used for fixing the other torsion arm of the torsion spring to be tested. According to the included angle of the two torque arms of the torsion spring to be tested, the screw mounting rack can rotate around the periphery of the fixed inner disc by taking the central limiting shaft of the torsion spring as the center to determine the fixed position, and the fixed position of the screw mounting rack is blocked from being adaptively adjusted.

Further, fixed inner disc includes the inner disc main part, establishes inner disc scale, the long waist hole of annular of symmetrically offering on inner disc main part neighboring on the inner disc main part limit, blocks the mounting of screw frame and installs on the long waist hole of annular, and the inner disc scale is used for instructing the installation angle of waiting to test the torsional spring.

Further, the blocking screw mount is mounted on the annular elongated waist hole by a mounting stud.

Furthermore, the transmission part is a crank rocker mechanism which comprises a motor, a motor connecting rotating shaft connected with the motor, a swinging arm butt joint plate connected with the motor connecting rotating shaft, and a swinging arm connected with the swinging arm butt joint plate, wherein one end of the swinging arm is connected with the swinging arm butt joint plate, the other end of the swinging arm is connected with a rotating disc connecting shaft, and the rotating disc connecting shaft is used for being connected with a rotating disc.

Furthermore, a long waist groove of the swinging arm butt joint plate is formed in the swinging arm butt joint plate, and the swinging arm is movably arranged on the long waist groove of the swinging arm butt joint plate; the rotating amplitude of the rotating disc is adjusted by adjusting the fixed position of the swing arm on the long waist groove of the butt joint plate of the swing arm.

Furthermore, the rotating disc comprises a rotating disc main body, and a rotating disc pointer is arranged on the rotating disc main body; the fixed outer disc comprises an outer disc main body, and outer disc scales are arranged on the edge of the outer disc main body; the rotating disc pointer is used for indicating the rotating amplitude of the rotating disc.

Furthermore, the fixed inner disc and the fixed outer disc are connected through a plurality of first bolts, and the rotating disc and the torsion spring mounting disc are connected through a plurality of second bolts.

Further, the device also comprises a frame for mounting the working part and the transmission part; a first fixing plate is connected below the rotating disc through a fixing shaft, and the rotating disc is connected with the fixing shaft through a deep groove ball bearing; the first fixing plate is used for installing the working part in the frame; the motor is fixed with the second fixed plate, and the second fixed plate is used for installing the transmission part in the frame.

On the other hand, the utility model provides an above-mentioned torsional spring endurance test device's application method, including following step:

(1) Sleeving a plurality of torsion springs to be tested on a central limiting shaft of the torsion springs, wherein one torsion arm of each torsion spring to be tested is fixed on the limiting shaft, and the other torsion arm of each torsion spring to be tested is fixed on a stop screw;

(2) Determining the fixed position of the blocking screw mounting frame on the periphery of the fixed inner disc and the fixed position of the blocking screw on the screw mounting frame according to the included angle between the two torque arms of the torsion spring to be tested;

(3) Determining the fixed position of the swing arm connecting shaft in the long waist groove of the swing arm butt joint plate according to the test working angle of the torsion spring;

(4) Starting the motor; one of the two torsion arms of the torsion spring is limited on the blocking screw and is in a static state; the other one is limited on a limiting shaft on the torsional spring mounting disc and does reciprocating torsional motion along with the torsional spring mounting disc.

And (3) in the step (2), the installation angle of the torsion spring is tested by fixing the scales of the inner disc.

The utility model discloses a pointer and scale can directly read torsional spring operating angle, and through adjustment swing arm connecting axle position, conveniently adjust the operating angle of torsional spring. The installation angle of the torsion spring can be quickly adjusted by adjusting the position of the installation stud.

The utility model discloses a theory of operation: the motor rotates to drive the swinging arm butt-joint plate to rotate, the swinging arm connected with the swinging arm swings, the rotating disc connecting shaft is connected with the swinging arm and the rotating disc, and when the swinging arm swings, the rotating disc rotates back and forth around the circle center. The torsional spring mounting disc is rigidly connected with the rotating disc through a stud and rotates back and forth along with the rotating disc. One of the two torsion arms of the torsion spring is limited by a stop screw on the fixed inner disc and is in a static state, and the other torsion arm of the torsion spring is limited by a limit shaft on the torsion spring mounting disc and does reciprocating torsional motion along with the torsion spring mounting disc.

Has the advantages that: compared with the prior art, the utility model has the advantages of as follows:

(1) High and controllable experimental frequency of work efficiency: the rotating speed of the motor is the frequency of the durability test of the torsion spring, and the test period can be shortened by increasing the rotating speed of the motor;

(2) The test condition is intuitive and convenient to adjust: through pointer and scale, can directly read torsional spring operating angle, through adjusting the swing arm connecting axle position, conveniently adjust the operating angle of torsional spring. The installation angle of the torsion spring is quickly adjusted by adjusting the position of the installation stud;

(3) The universality is good: the running-in test of torsion springs with different specifications can be suitable by adjusting the position of a limiting screw of a torsion arm of the torsion spring, and the simultaneous test of a plurality of torsion springs can be realized by modifying the design of a central limiting shaft of the torsion spring;

(4) The test device has simple structure and convenient installation: the main principle of the testing device is a crank rocker mechanism, and the testing device is simple in transmission, convenient to install and low in failure rate.

Drawings

Fig. 1 is a sectional view of an overall structure of a torsional spring durability test apparatus according to an embodiment of the present invention;

fig. 2 is a top view of the overall structure of the torsional spring durability test apparatus according to an embodiment of the present invention;

fig. 3 is a front view of the overall structure of the torsion spring endurance testing apparatus according to an embodiment of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

fig. 5 is a schematic structural diagram of a transmission portion of a torsion spring endurance testing apparatus according to an embodiment of the present invention;

fig. 6 is a schematic structural view of a working part of the torsion spring endurance testing apparatus according to an embodiment of the present invention;

fig. 7 is a schematic structural view of an outer disc and a rotating disc of a torsion spring endurance testing apparatus according to an embodiment of the present invention;

fig. 8 is a schematic structural view of an inner disc and a mounting disc of the torsion spring endurance testing apparatus according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a torsion spring endurance testing apparatus according to an embodiment of the present invention;

fig. 10 is a schematic view of a connection structure between a rotating disc and a first fixing plate of a torsion spring endurance testing apparatus according to an embodiment of the present invention;

reference numeral, 1, a fixed outer disc; 101. outer disc graduations; 102. a first bolt mounting hole; 103. an outer disc main body; 2. rotating the disc; 201. rotating the dial pointer; 202. a second bolt mounting hole; 203. a mounting hole for a connecting shaft of the rotating disc; 204. a rotating disk main body; 3. fixing the inner disc; 301. the inner disc is graduated; 302. a ring-shaped long waist hole; 303. a first bolt fixing lug; 304. an inner disc main body; 4. a torsion spring mounting plate; 5. a torsion spring center limiting shaft; 6. a blocking screw; 7. a limiting shaft; 8. a rotating disc connecting shaft; 9. a swing arm; 10. a swing arm connecting shaft; 11. a swing arm butt plate; 12. the swing arm is connected with the long waist groove of the plate; 13. a first fixing plate; 14. a second fixing plate; 15. the motor is connected with the rotating shaft; 16. a motor; 17. a first bolt; 18. a second bolt; 19. a blocking screw mounting bracket; 20. a torsion spring; 21. mounting a stud; 22. a frame; 23. a fixed shaft; 24. provided is a deep groove ball bearing.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings.

In one embodiment, as shown in fig. 1-4, a torsion spring endurance testing apparatus is provided, which comprises a working portion for mounting a torsion spring to be tested, and a transmission portion for driving the working portion to perform a repeated twisting motion.

The working part comprises a fixed outer disc 1, a rotating disc 2, a fixed inner disc 3, a torsion spring mounting disc 4, a torsion spring central limiting shaft 5, a blocking screw 6, a limiting shaft 7 and a blocking screw mounting frame 19. Wherein, fixed outer dish 1 and fixed inner disc 3 are the ring structure, and the diameter of fixed outer dish 1 slightly is greater than the diameter of fixed inner disc 3, and fixed outer dish 1 is fixed in the below of fixed inner disc 3, and the centre of a circle of the two is located the same axis.

The rotating disc 2 is sleeved in the fixed outer disc 1, the rotating disc and the fixed outer disc are positioned on the same plane, the circle centers of the rotating disc and the fixed outer disc are overlapped, the torsional spring mounting disc 4 is sleeved in the fixed inner disc 3, the rotating disc and the fixed inner disc are positioned on the same plane, and the circle centers of the torsional spring mounting disc and the fixed inner disc are overlapped. The rotating disc 2 is connected with the transmission part and is driven by the transmission part to rotate repeatedly. The torsion spring mounting disc 4 is fixed on the rotating disc 2, the circle centers of the torsion spring mounting disc and the rotating disc are positioned on the same axis, and when the rotating disc 2 is driven by the transmission part to rotate repeatedly, the torsion spring mounting disc 4 also rotates along with the rotation.

The central limiting shaft 5 of the torsion spring is fixed at the center of the torsion spring mounting disc 4, the central limiting shaft 5 of the torsion spring can be simultaneously sleeved with a plurality of torsion springs 20, and the limiting shaft 7 is fixed on the torsion spring mounting disc 4. The blocking screw mounting rack 19 is fixed on 2 symmetrical annular long grooves on the fixed inner disc 3 through screws and is positioned above the torsion spring mounting disc 4, and the middle point and the torsion spring mounting disc 4 are positioned on the same axis, namely the blocking screw mounting rack 19 is positioned right above the torsion spring central limiting shaft 5. The blocking screws 6 are mounted on the blocking screw mounting bracket 19 and are suspended above the torsion spring mounting plate 4. The blocking screw mounting rack 19 is provided with a long groove, the blocking screw 6 is mounted on the long groove, and the mounting position can be adjusted according to the use requirement; the installation position of the stop screw 6 is adjusted by adjusting the positions of two screws fixed on the annular long groove of the fixed inner disc of the stop screw installation frame 19, so that the size of an included angle between the stop screw and the limiting shaft 7 is changed, namely the installation angle of the torsion spring is adjusted.

The torsion spring 20 is provided with two torsion arms, the main body of the torsion spring 20 is sleeved on the central limiting shaft 5 of the torsion spring, one torsion arm is fixed on the limiting shaft 7, the other torsion arm is fixed on the blocking screw 6, and the installation angle of the torsion spring 20 is adjusted by adjusting the relative position of the blocking screw installation frame 19 and the limiting shaft 7, namely adjusting the installation position of the blocking screw installation frame 19.

As shown in fig. 1 and 5, in an embodiment, a torsional spring endurance test apparatus is provided, where a transmission portion includes a rotating disc connecting shaft 8, a swing arm 9, a swing arm connecting shaft 10, a swing arm butt plate 11, a swing arm butt plate long waist slot 12, a first fixing plate 13, a second fixing plate 14, a motor connecting rotating shaft 15, and a motor 16, the transmission portion is a crank-rocker mechanism, the transmission principle is a crank-rocker principle, specifically, the motor connecting rotating shaft 15 is disposed above the motor 16, the swing arm butt plate 11 is fixed in a rectangular shape of the motor connecting rotating shaft 15, and is driven by the motor to rotate around the motor connecting rotating shaft 15. The swinging arm butt joint plate 11 is provided with a swinging arm butt joint plate long waist groove 12, and the swinging arm 9 is movably arranged in the swinging arm butt joint plate long waist groove 12 through a swinging arm connecting shaft 10. One end of the swing arm 9 is connected with the long waist groove 12 of the swing arm butt joint plate, the other end of the swing arm is connected with the rotating disc connecting shaft 8, and the rotating disc connecting shaft 8 is used for being connected with the working part.

The motor 16 rotates to drive the swing arm butt joint plate 11 to rotate, the swing arm 9 connected with the swing arm butt joint plate swings, the rotating disc connecting shaft 8 is connected with the swing arm 9 and the rotating disc 2, and when the swing arm 9 swings, the rotating disc 2 rotates back and forth around the circle center. The distance between the swinging arm connecting shaft 10 and the midline of the long waist groove 12 of the swinging arm butt joint plate is the effective radius of the swinging arm butt joint plate 11 in rotation, and the size of the effective radius is adjusted by adjusting the distance between the swinging arm connecting shaft 10 and the midline of the long waist groove 12 of the swinging arm butt joint plate, so that the swinging amplitude of the swinging arm 9 is adjusted.

In one embodiment, as shown in fig. 6-8, there is provided a torsion spring durability testing apparatus, wherein the fixed outer plate 1 and the fixed inner plate 3 are rigidly connected by a plurality of first bolts 17, and the number of the first bolts 17 is several, and the number is preferably 2. The fixed outer disc 1 includes an outer disc main body 103 and first bolt mounting holes 102, the first bolt mounting holes 102 being opened in the outer disc main body 103. The fixing inner disc 3 includes a first bolt fixing lug 303 and an inner disc main body 304, and the first bolt fixing lug 303 is provided on the outer periphery of the inner disc main body 304. The first bolt 17, the first bolt fixing lug base 303 and the first bolt mounting hole 102 are used in a matched manner, one end of the first bolt 17 is fixed on the first bolt fixing lug base 303, and the other end of the first bolt 17 is fixed on the first bolt mounting hole 102.

The rotating disc 2 and the torsion spring mounting disc 4 are rigidly connected through a plurality of second bolts 18, and the number of the second bolts 18 is uniform, preferably 3. The turn disc 2 includes a turn disc main body 204 and second bolt mounting holes 202, and the second bolt mounting holes 202 are opened in the turn disc main body 204. Mounting holes are formed in the positions, corresponding to the second bolt mounting holes 202, of the torsion spring mounting plate 4, and the second bolts 18 penetrate through the second bolt mounting holes 202 and the mounting holes in the torsion spring mounting plate 4.

The turn disc 2 further includes a turn disc connecting shaft mounting hole 203, and the turn disc connecting shaft 8 is connected to the turn disc 2 through the turn disc connecting shaft mounting hole 203.

The fixed outer disc 1 further comprises outer disc scales 101 arranged on the periphery of the outer disc main body 103, the rotating disc 2 further comprises a rotating disc pointer 201 arranged on the rotating disc main body 204, and the rotating disc pointer 201 is matched with the outer disc scales 101 to indicate the current working angle.

The fixed inner disc 3 comprises an inner disc scale 301 arranged on the periphery of an inner disc main body 304 and an annular long waist hole 302 symmetrically arranged on the outer side edge of the inner disc main body 304, wherein the blocking screw mounting rack 19 is movably arranged in the annular long waist hole 302 through a mounting stud 21. The relative position of the stop screw mounting rack 19 and the limiting shaft 7 is adjusted by adjusting the position of the mounting stud 21 in the annular long waist hole 302, so as to adapt to the included angle between the two torsion arms of the torsion spring 20. The position of the limiting screw of the torsion arm of the torsion spring is adjusted, the running-in test of torsion springs with different specifications can be suitable, and the simultaneous test of a plurality of torsion springs can be realized through the design of the length of the central limiting shaft of the torsion spring.

In one embodiment, as shown in fig. 9, a torsion spring endurance testing apparatus is provided, which comprises a frame 22, a transmission part and a working part 3, wherein the frame 22 is an aluminum frame.

The frame 22 is used for installing the working part and the transmission part and has the functions of supporting and positioning the whole device; the working part is fixed to the frame 22 by the first fixing plate 13, and the transmission part is fixed to the frame 22 by the second fixing plate 14. As shown in fig. 10, the rotary plate 2 is connected to the first fixing plate by a fixing shaft 23, the fixing shaft 23 is connected to the rotary plate 2 by a deep groove ball bearing 24, the fixing shaft 23 is engaged with the deep groove ball bearing 24 so that the fixing plate is connected to the rotary plate 2 without interfering with the rotation of the rotary plate 2, and the second fixing plate 14 is fixedly connected to the motor 16; the first fixing plate 13 and the second fixing plate 14 are fixed in the frame 22, respectively.

In one embodiment, a method for using a torsion spring durability test device is provided, which comprises the following steps:

(1) A plurality of torsion springs to be tested are sleeved on a central limiting shaft of the torsion springs, one of two torsion arms of each torsion spring to be tested is fixed on the limiting shaft, and the other torsion arm of each torsion spring to be tested is fixed on the stop screw.

(2) Adjusting the installation angle of the torsion spring: and determining the fixed position of the blocking screw mounting frame at the periphery of the fixed inner disc and the fixed position of the blocking screw at the screw mounting frame according to the included angle between the two torque arms of the test torsion spring.

The installation angle of the torsion spring can be read through the scales on the fixed inner disc, and the installation angle of the torsion spring can be changed by rotating the angle of the installation stud along the annular long waist hole.

(3) Adjusting the working angle of the torsion spring: and determining the fixed position of the swing arm connecting shaft in the long waist groove of the swing arm butt joint plate according to the test working angle of the torsion spring.

The working angle of the torsion spring can be directly read from the scale on the fixed outer disc rotated by the pointer on the rotating disc.

When the rotation angle does not meet the actual requirement, the rotation amplitude is realized by adjusting the position of the connecting shaft of the swing arm on the long waist groove of the butt plate of the swing arm. The closer to the center of the rotating shaft of the motor, the smaller the rotating angle is.

The utility model discloses an experimental operating mode is directly perceived and the adjustment is convenient: through pointer and scale, can directly read torsional spring operating angle, through adjusting the swing arm connecting axle position, conveniently adjust the operating angle of torsional spring. The installation angle of the torsion spring can be quickly adjusted by adjusting the position of the installation stud.

Claims

1. A torsion spring endurance test device is characterized by comprising a working part for mounting a torsion spring to be tested and a transmission part for driving the working part to move repeatedly; the working part comprises a rotating disc (2) connected with the transmission part, a torsional spring mounting disc (4) which is rigidly connected with the rotating disc (2) and is positioned right above the rotating disc, a fixed inner disc (3) sleeved on the periphery of the torsional spring mounting disc (4), a torsional spring central limiting shaft (5) which is fixed at the center of the torsional spring mounting disc (4) and is used for mounting a torsional spring to be tested, a blocking screw mounting frame (19) which is fixed on the fixed inner disc (3) and is arranged above the torsional spring central limiting shaft (5), a blocking screw (6) which is connected with the blocking screw mounting frame (19), and a limiting shaft (7) which is fixed on the torsional spring mounting disc (4); the stop screw (6) is used for fixing one torsion arm of the torsion spring to be tested, and the limit shaft (7) is used for fixing the other torsion arm of the torsion spring to be tested; according to the included angle of the two torque arms of the torsion spring to be tested, the screw mounting rack can rotate along the periphery of the fixed inner disc (3) by taking the torsion spring central limiting shaft (5) as the center to determine the fixed position, and the blocking screw (6) is also adaptively adjusted at the fixed position of the screw mounting rack.

2. The torsion spring endurance testing apparatus of claim 1, where the fixed inner plate (3) includes an inner plate main body (304), inner plate scales (301) provided at the edge of the inner plate main body (304), and annular long waist holes (302) symmetrically provided at the peripheral edge of the inner plate main body (304), the blocking screw mounting bracket (19) is installed on the annular long waist holes (302), and the inner plate scales (301) are used to indicate the installation angle of the torsion spring to be tested.

3. The torsion spring endurance testing apparatus according to claim 2, wherein the blocking screw mounting bracket (19) is mounted to the annular long kidney hole (302) through a mounting stud (21).

4. The torsion spring endurance testing apparatus according to claim 1, wherein the transmission portion is a crank and rocker mechanism including a motor (16), a motor connection shaft (15) connected to the motor (16), a swing arm docking plate (11) connected to the motor connection shaft (15), a swing arm (9) connected to the swing arm docking plate (11), the swing arm (9) having one end connected to the swing arm docking plate (11) and the other end connected to a rotating disc connection shaft (8), the rotating disc connection shaft (8) being adapted to be connected to the rotating disc (2).

5. The torsion spring endurance testing device according to claim 4, wherein the long waist slot (12) of the swing arm interface plate is opened in the swing arm interface plate (11), and the swing arm (9) is movably mounted on the long waist slot (12) of the swing arm interface plate; the rotating amplitude of the rotating disc (2) is adjusted by adjusting the fixed position of the swinging arm (9) on the long waist groove (12) of the swinging arm butt joint plate.

6. The torsion spring endurance testing apparatus according to claim 5, wherein the rotating disc includes a rotating disc main body (204), the rotating disc main body (204) being provided with a rotating disc index (201); the fixed outer disc (1) comprises an outer disc main body (103), and outer disc scales (101) are arranged on the edge of the outer disc main body (103); the rotating disc pointer (201) is used for indicating the rotating amplitude of the rotating disc (2).

7. The torsion spring endurance test apparatus according to claim 1, wherein the fixed inner disc (3) and the fixed outer disc (1) are connected by a plurality of first bolts (17), and the rotating disc (2) and the torsion spring mounting disc (4) are connected by a plurality of second bolts (18).

8. The torsion spring endurance testing apparatus according to claim 1, further comprising a frame (22) for mounting the working portion and the transmission portion; a first fixing plate (13) is fixedly connected to the lower portion of the rotating disc (2) through a fixing shaft (23), the fixing shaft (23) is connected with the rotating disc (2) through a deep groove ball bearing (24), and the first fixing plate (13) is used for installing a working portion in a frame (22); the motor (16) is fixed with a second fixing plate (14), and the second fixing plate (14) is used for installing the transmission part in the frame (22).