Steel member durability test system

Abstract

The invention discloses a steel member durability testing system which comprises a workbench, a support, an adjusting mechanism and a testing mechanism. A first air cylinder, a pushing piece, a limiting piece and a driving piece are arranged in the adjusting mechanism, and a fixed seat, a sliding piece, a retaining piece and a movable piece are arranged in the testing mechanism. The movable part is pressed down to push one end of the swing part to move downwards, and the other end of the swing part is kept to push the sliding part to be close to the keeping part until the stress value of the stress part changes. The steel member durability test system is compact in structure and ingenious in design. The adopted adjusting mechanism does not need the pressure of the first air cylinder to directly act on the steel member all the time, so that the first air cylinder does not need to be in a working state all the time. The durability test of the steel member needs a certain time, so that through the cooperation of the limiting block and the limiting piece, the external force can be slowly applied, the stability of the applied external force is kept, and the accuracy of durability data of the steel member is improved.

Description

Technical Field

[0001] The invention relates to a steel component testing technology, in particular to a steel component durability testing system. Background Art

[0002] Steel components are mainly subjected to pressure resistance in the equipment they are used in. Therefore, when producing steel cables, their compressive durability needs to be tested to ensure the safety of the equipment they are used in.

[0003] At present, when testing steel components, it is necessary to use pressure-applying equipment to continuously apply pressure to them. However, long-term pressure application may cause damage to the equipment, and the pressure value applied by the equipment may change, which will eventually lead to errors in the data of the tested steel components, affecting the use of the steel components in the future and causing irreversible disasters. In addition, during the test, the pressure of the tested steel components directly acts on the load-bearing parts, which will cause damage to the load-bearing parts and lead to test failure. Summary of the invention

[0004] In order to solve the defects of the above-mentioned prior art, the present invention proposes a steel component durability testing system.

[0005] The technical solution of the present invention is achieved in this way:

[0006] A steel component durability testing system, characterized by comprising:

[0007] A workbench, wherein a positioning seat is provided on the workbench, a positioning hole is provided on the positioning seat, a pressure plate is provided in the positioning hole, a screw is provided at the upper end of the positioning seat, and the screw passes through the positioning seat and is connected to the pressure plate in the positioning hole.

[0008] A bracket is arranged on a workbench, the bracket is provided with an adjustment mechanism, the adjustment mechanism is provided with a first cylinder, a pushing member, a limiting member and a driving member, the pushing member is connected to the first cylinder, the limiting member is provided with a plurality of first teeth, the driving member is provided with a limiting block matched with the first teeth, the first cylinder drives the pushing member to move downward to drive the driving member to apply pressure downward, and keeps the limiting block in contact with different first teeth during the movement.

[0009] And a testing mechanism arranged on a workbench, wherein a fixed seat, a sliding member, a retaining member and a movable member are arranged in the testing mechanism, an electromagnetic member is arranged on the movable member, the sliding member and the retaining member are arranged in the middle of the fixed seat, a swinging member is arranged in the middle of the retaining member and the sliding member, the middle of the swinging member is hinged to the middle of the retaining member through a hinge rod, one end of the swinging member is placed in the middle of the sliding member, and the other end is placed in the middle of the movable member, a force-bearing member is arranged between the sliding member and the retaining member, the movable member is subjected to downward pressure, pushing one end of the swinging member downward, and the other end of the swinging member is kept to push the sliding member close to the retaining member until the force value of the force-bearing member changes.

[0010] In the present invention, a first tension spring is provided at the upper end of the driving member, the upper end of the first tension spring is connected to the bracket, and the lower end is connected to the driving member, and a driving rod is provided at the lower end of the driving member.

[0011] In the present invention, a movable hole and an movable chamber are provided in the middle of the driving member, the movable hole and the movable chamber are connected, the limit block is arranged in the movable chamber, a limit rod is provided on the limit block, the limit rod is in the movable hole, a first spring is sleeved on the limit rod, one end of the first spring contacts with the limit block, and the other end contacts with the inner wall of the movable chamber, the limit rod extends through the movable hole to the outside, and a nut is provided on the limit rod.

[0012] In the present invention, the pushing member is provided with a pushing surface, a blocking surface and a vertical surface, the pushing surface is connected to the blocking surface through the vertical surface, the pushing surface is located at the lower end of the blocking surface, and the limiting block is provided with a rod body that cooperates with the pushing surface and the blocking surface.

[0013] In the present invention, a first inclined surface is provided on the limit block, a second cylinder is further provided in the adjustment mechanism, a mounting block is provided at the lower end of the second cylinder, an unlocking block is provided on the mounting block, a second inclined surface matching the first inclined surface is provided on the unlocking block, and the first inclined surface and the second inclined surface are arranged in parallel.

[0014] In the present invention, the length of the rod body is greater than the width of the unlocking block plus the width of the pushing surface.

[0015] In the present invention, the sliding member is provided with a first accommodating groove, a sliding groove, an installation groove and a symmetrically arranged sliding rod, the first accommodating groove is connected to the sliding groove, the sliding groove is inclined, the installation groove is provided with a symmetrically arranged ball groove, the force-bearing member is composed of a ball head, a tube body and a positioning body, and the ball head is installed in cooperation with the ball groove.

[0016] In the present invention, the retaining member is provided with a second accommodating groove, a through hole and a symmetrical sliding hole, the sliding rod is arranged in the sliding hole, the second accommodating groove cooperates with the second accommodating groove, the swinging member is arranged in the first accommodating groove and the second accommodating groove, the through hole is provided with a second spring and an internal thread, the internal thread is provided with a thread head, the thread head is provided with a threaded portion, the tube body is in contact with the second spring, and the positioning body is arranged in the middle of the second spring.

[0017] In the present invention, a rotating rod is provided at one end of the swinging member, a roller is provided on the rotating rod, and the roller is arranged in a sliding groove. A limiting head is provided at the other end of the swinging member, and an arc-shaped opening is provided at the limiting head. A retaining hole is provided in the second accommodating groove, and a second tension spring is provided in the retaining hole. The lower end of the second tension spring is connected to one end close to the limiting head.

[0018] In the present invention, a notch is provided in the middle of the movable member, and a pressure rod cooperating with the arc-shaped opening is provided in the notch.

[0019] The steel component durability test system implemented in the present invention has the following beneficial effects: the steel component durability test system has a compact structure and an ingenious design. The adopted adjustment mechanism does not require the pressure of the first cylinder to act directly on the steel component all the time, so that the first cylinder does not need to be in a working state all the time. The durability test of the steel component requires a certain time test, so the cooperation of the limit block and the limit member can be used to achieve the slow application of external force, maintain the stability of the applied external force, and improve the accuracy of the durability data of the steel component. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the steel component durability testing system of the present invention;

[0021] Figure 2 for Figure 1 The main view;

[0022] Figure 3 for Figure 1 Schematic diagram of the regulating mechanism structure;

[0023] Figure 4 for Figure 3 Schematic diagram of some structures in ;

[0024] Figure 5 for Figure 4 A top view of

[0025] Figure 6 for Figure 4 The main perspective view;

[0026] Figure 7 for Figure 3A cross-sectional view of the drive member and the limit block structure;

[0027] Figure 8 for Figure 1 Schematic diagram of the test organization structure in ;

[0028] Fig. 9 for Figure 8 A top view of

[0029] Fig.10 for Fig. 9 The cross-sectional view at AA in FIG.

[0030] Fig.11 for Figure 8 Exploded diagram of

[0031] Fig.12 for Fig.11 A schematic diagram of the structure in another direction;

[0032] Fig.13 for Fig.11 Schematic diagram of the structure of the moving parts;

[0033] Fig.14 for Fig.11 A perspective view of the sliding member structure in FIG.

[0034] Fig.15 for Fig.11 A perspective view of the retaining member structure in FIG.

[0035] Fig.16 for Fig.11 A schematic diagram of the structure of the force-bearing member, the second spring and the threaded head;

[0036] Fig.17 for Fig.11 Schematic diagram of the swing member structure;

[0037] Fig.18 for Figure 8 Main perspective view.

[0038] In the figure: workbench 1, bracket 2, adjustment mechanism 3, testing mechanism 4, support foot 5, positioning seat 6, positioning hole 7, pressure plate 8, screw 9, bracelet 10, pressure rod 11, steel member 12, first cylinder 13, pusher 14, limiter 15, drive member 16, first tooth 17, limiter block 18, first tension spring 19, drive rod 20, movable hole 21, movable chamber 22, limiter rod 23, first spring 24, nut 25, internal thread 26, unlocking block 27, tooth groove 28, pusher 29, push surface 30, blocking surface 31, vertical surface 32, rod body 33, second inclined surface 34, first inclined surface 35, second cylinder 36, mounting block 37, fixed seat 38, sliding member 39, retaining member 40, movable member 41, electromagnetic Component 42, holding mouth 43, swinging component 44, hinged rod 45, force-bearing component 46, first accommodating groove 47, sliding groove 48, mounting groove 49, sliding rod 50, sliding hole 51, ball groove 52, ball head 53, tube body 54, positioning body 55, second accommodating groove 56, through hole 57, second spring 58, adjusting pin 59, threaded portion 60, hexagonal hole 61, rotating rod 62, roller 63, limiting head 64, arc mouth 65, holding hole 66, second tension spring 67, notch 68, first extension portion 69, second extension portion 70, gap 71, active area 72, threaded head 73, through area 74, strip groove 75, through groove 76, adjusting rod 77, adjusting block 78, adjusting hole 79, dovetail block 80, dovetail groove 81. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0040] like Figures 1 to 18 As shown, the steel member durability test system of the present invention comprises a workbench 1, a bracket 2, an adjustment mechanism 3 and a test mechanism 4. A support leg 5 is provided at the lower end of the workbench 1, a positioning seat 6 is provided on the workbench 1, a positioning hole 7 is provided on the positioning seat 6, a pressure plate 8 is provided in the positioning hole 7, a screw rod 9 is provided at the upper end of the positioning seat 6, and the screw rod 9 passes through the positioning seat 6 and is connected to the pressure plate 8 in the positioning hole 7. A hand ring 10 is provided on the screw rod 9, and rotating the hand ring 10 can make the screw rod 9 rotate, push the pressure rod 11 to move downward, fix one end of the steel member 12 in the positioning hole 7, and the other end can be pressurized by the adjustment mechanism 3 to test the compressive durability of the steel member 12.

[0041] The testing mechanism 4 is installed on the workbench 1 through an adjusting rod 77. An adjusting block 78 is provided at the bottom of the workbench 1. The adjusting rod 77 is provided with multiple adjusting holes 79. The adjusting block 78 is provided with an adjusting pin 82 inserted into the adjusting hole 79. The height of the testing mechanism can be adjusted according to the actual steel component 12.

[0042] The bracket 2 is arranged on the workbench 1, and an adjustment mechanism 3 is arranged on the bracket 2. The adjustment mechanism 3 is used to adjust the magnitude of the external force applied to one end of the steel component 12, and the compressive durability of the steel component 12 can be tested under different forces. The adjustment mechanism 3 is provided with a first cylinder 13, a pusher 14, a limiter 15 and a driving member 16. The pusher 14 is connected to the first cylinder 13, and the limiter 15 is provided with a plurality of first teeth 17, and the driving member 16 is provided with a limiter block 18 that cooperates with the first teeth 17. The first cylinder 13 drives the pusher 14 to move downward to drive the driving member 16 to apply pressure downward, and keeps the limiter block 18 in contact with different first teeth 17 during the movement.

[0043] A first tension spring 19 is provided at the upper end of the driving member 16, and the upper end of the first tension spring 19 is connected to the bracket 2. The first tension spring 19 is used to maintain the position of the driving member 16, so that when the test system in the present application is not tested, the driving member 16 is pulled by the first tension spring 19 and is at the upper end position of the bracket 2. The lower end of the first tension spring 19 is connected to the driving member 16, and a driving rod 20 is provided at the lower end of the driving member 16. The driving rod 20 is used to push one end of the steel member 12 at the lower end.

[0044] A dovetail block 80 is provided on the driving member 16 , and a dovetail groove 81 matching with the dovetail block 80 is provided on the bracket 2 .

[0045] An active hole 21 and an active chamber 22 are provided in the middle of the driving member 16, and the active hole 21 and the active chamber 22 are connected. The limit block 18 is arranged in the active chamber 22, and a limit rod 23 is provided on the limit block 18, and the limit rod 23 is in the active hole 21. A first spring 24 is sleeved on the limit rod 23, and one end of the first spring 24 contacts the limit block 18, and the other end contacts the inner wall of the active chamber 22. The limit rod 23 extends to the outside through the active hole 21, and a nut 25 is provided on the limit rod 23. A thread that cooperates with the nut 25 can be provided on the limit rod 23, so as to facilitate the rotation of the nut 25 and change the elastic force of the first spring 24. The force with which the limit block 18 is pushed by the unlocking block 27 can be changed, and at the same time, the distance of the limit block 18 entering the tooth groove 28 between the first teeth 17 and the first teeth 17 can also be changed.

[0046] The pusher 14 is provided with a push part 29, and the push part 29 is provided with a push surface 30, a blocking surface 31 and a vertical surface 32. The push surface 30 is connected with the blocking surface 31 through the vertical surface 32, and the push surface 30 is located at the lower end of the blocking surface 31. The limit block 18 is provided with a rod 33 that cooperates with the push surface 30 and the blocking surface 31. The pusher 14 is used to push the rod 33 on the limit block 18 downward and push it to the second inclined surface 34 of the unlocking block 27, so that the rod 33 is guided by the second inclined surface 34 to compress the first spring 24, so that the rod 33 reaches the vertical surface 32 and the blocking surface 31. At this time, the limit block 18 is no longer in the tooth groove 28 between the first teeth 17 and the first teeth 17. When the first cylinder 13 drives the pusher 14 to move upward, the driving member 16 will be reset by the elastic force of the first tension spring 19.

[0047] The limiting block 18 is provided with a first inclined surface 35, and the adjusting mechanism 3 is further provided with a second cylinder 36. A mounting block 37 is provided at the lower end of the second cylinder 36, and an unlocking block 27 is provided on the mounting block 37. The unlocking block 27 is provided with a second inclined surface 34 that matches the first inclined surface 35, and the first inclined surface 35 and the second inclined surface 34 are arranged in parallel. The second cylinder 36 pulls the unlocking block 27 upward, so that the limiting block 18 staying in any tooth groove 28 can be unlocked and reset.

[0048] The length of the rod body 33 is greater than the width of the unlocking block 27 plus the width of the pushing surface 30. Figure 5 As shown, the unlocking block 27 is located between the pushing portion 29 and the limiting block 18 , so that the rod body 33 can be pushed by the pushing surface 30 and can also be guided by the second inclined surface 34 .

[0049] The testing mechanism 4 is arranged on the workbench 1, and is provided with a fixed seat 38, a sliding member 39, a retaining member 40 and a movable member 41. The movable member 41 is provided with an electromagnetic member 42, and the movable member 41 is provided with a retaining opening 43 for installing the electromagnetic member 42. The electromagnetic member 42 is used to attract the steel member 12, and the movable member 41 is installed on the steel member 12.

[0050] The middle of the fixing seat 38 is penetrated to form a penetration area 74 , and is also provided with a strip groove 75 . A through groove 76 for installing the roller 63 is provided in the middle of the strip groove 75 , and the through groove 76 is arranged perpendicular to the strip groove 75 .

[0051] The sliding member 39 and the retaining member 40 are arranged in the middle of the fixing seat 38, and a swinging member 44 is arranged in the middle of the retaining member 40 and the sliding member 39. The middle of the swinging member 44 is hinged to the middle of the retaining member 40 through a hinge rod 45, and the hinge rod 45 extends into the fixing seat 38. One end of the swinging member 44 is placed in the middle of the sliding member 39, and the other end is placed in the middle of the movable member 41. A force-bearing member 46 is arranged between the sliding member 39 and the retaining member 40. The movable member 41 is subjected to downward pressure, pushing one end of the swinging member 44 downward, and the other end of the swinging member 44 pushes the sliding member 39 close to the retaining member 40 until the force value of the force-bearing member 46 changes. The force-bearing member 46 can be deformed by force, so that the pressure on the force-bearing member 46 is converted into an electrical signal and transmitted to the computer for analysis. After the value changes, the pressure can be continued to be applied, or it can be maintained for a period of time under this pressure, so as to observe the surface of the steel member 12.

[0052] The sliding member 39 is provided with a first receiving groove 47, a sliding groove 48, a mounting groove 49 and a symmetrically arranged sliding rod 50. The first receiving groove 47 is connected to the sliding groove 48. The sliding groove 48 is inclined. The sliding groove 48 is inclined toward the lower end and between the retaining member 40, so that after the end of the swinging member 44 close to the movable member 41 is subjected to force, it cooperates with the sliding groove 48 to push the sliding member 39 close to the retaining member 40, and the sliding rod 50 now slides in the sliding hole 51 until the sliding rod 50 no longer slides in the sliding hole 51, and then the force-bearing member 46 is kept deformed. The mounting groove 49 is provided with a symmetrically arranged ball groove 52. The force-bearing member 46 is composed of a ball head 53, a tube body 54 and a positioning body 55. The ball head 53 is installed in cooperation with the ball groove 52. The spherical surface of the ball groove 52 is arc-shaped, and its arc angle is a major arc, which is convenient for the insertion and installation of the ball head 53.

[0053] The retaining member 40 is provided with a second receiving groove 56, a through hole 57 and a symmetrical sliding hole 51, the sliding rod 50 is arranged in the sliding hole 51, the second receiving groove 56 cooperates with the second receiving groove 56, and the swinging member 44 is arranged in the first receiving groove 47 and the second receiving groove 56. The through hole 57 is provided with a second spring 58 and an internal thread 26, a thread head 73 is provided at the internal thread 26, a threaded portion 60 is provided on the thread head 73, the tube body 54 contacts the second spring 58, and the positioning body 55 is arranged in the middle of the second spring 58. The thread head 73 is provided with a hexagonal hole 61, and the thread head 73 can be moved by rotating the hexagonal hole 61 with a tool to change the elastic force value of the second spring 58. Thereby changing the pressure value that the force-bearing member 46 needs to bear, if the pressure value increases, it means that the strength of the force-bearing member 46 to bear the pressure also increases, if the pressure value decreases, it means that the strength of the force-bearing member 46 to bear the pressure also decreases.

[0054] A rotating rod 62 is provided at one end of the swing member 44, a roller 63 is provided on the rotating rod 62, and the roller 63 is arranged in the sliding groove 48. A stopper 64 is provided at the other end of the swing member 44, and an arc-shaped opening 65 is provided at the stopper 64. A retaining hole 66 is provided in the second receiving groove 56, and a second tension spring 67 is provided in the retaining hole 66, and the lower end of the second tension spring 67 is connected to one end close to the stopper 64.

[0055] A notch 68 is provided in the middle of the movable member 41, and a pressure rod 11 is provided in the notch 68 to cooperate with the arc-shaped opening 65. The pressure rod 11 is used to push the arc-shaped opening 65, so that the end of the swing member 44 close to the movable member 41 is pressed down, while the other end is lifted, and the roller 63 is guided by the sliding groove 48 to push it toward the retaining member 40. The sliding rod 50 slides in the sliding hole 51, and when the roller 63 reaches the bottom, the retaining sliding rod 50 is deformed by force first, and then the force-bearing member 46 is deformed by force.

[0056] A first extension portion 69 is provided on the sliding member 39, and a second extension portion 70 is provided on the retaining member 40. The first extension portion 69 is located at the upper end of the mounting groove 49. After the force-bearing member 46 is installed, a gap 71 is maintained between the first extension portion 69, the second extension portion 70 and the force-bearing member 46, which will keep the ball head 53 rotating in the ball groove 52. The gap 71 can make the force-bearing member 46 deform later than the sliding rod 50.

[0057] There is an active area 72 between the fixed seat 38 and the sliding member 39 and the retaining member 40, which facilitates the sliding member 39 to rotate upward, and the swinging member 44 pushes the sliding member 39 to squeeze the force-bearing member 46 to deform.

[0058] When the swing member 44 is pressed by the pressure rod 11, the second tension spring 67 will be pulled first, pushing the sliding member 39 close to the retaining member 40, and keeping the sliding rod 50 deformed, and finally deforming the force-bearing member 46, which will weaken the pressure of the push rod and directly apply it to the force-bearing member 46, avoiding direct damage to the force-bearing member 46. The tension of the second tension spring 67 is constant, and the force required for the sliding rod 50 to deform under stress is also constant, so the external force borne by the steel member 12 can be obtained based on direct data, and the data can be recorded for analysis.

[0059] The adjustment mechanism 3 in the present application does not require the pressure of the first cylinder 13 to act directly on the steel member 12, so that the first cylinder 13 does not need to be in working state all the time. The durability test of the steel member 12 requires a certain period of time, so the cooperation of the limit block 18 and the limit member 15 can be used to slowly apply the external force, maintain the stability of the applied external force, and improve the accuracy of the durability data of the steel member 12.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A steel component durability testing system, characterized in that: include: A workbench, wherein a positioning seat is provided on the workbench, a positioning hole is provided on the positioning seat, a pressure plate is provided in the positioning hole, a screw is provided at the upper end of the positioning seat, and the screw passes through the positioning seat and is connected to the pressure plate in the positioning hole. A bracket is arranged on a workbench, the bracket is provided with an adjustment mechanism, the adjustment mechanism is provided with a first cylinder, a pushing member, a limiting member and a driving member, the pushing member is connected to the first cylinder, the limiting member is provided with a plurality of first teeth, the driving member is provided with a limiting block matched with the first teeth, the first cylinder drives the pushing member to move downward to drive the driving member to apply pressure downward, and keeps the limiting block in contact with different first teeth during the movement. And a testing mechanism arranged on a workbench, wherein a fixed seat, a sliding member, a retaining member and a movable member are arranged in the testing mechanism, an electromagnetic member is arranged on the movable member, the sliding member and the retaining member are arranged in the middle of the fixed seat, a swinging member is arranged in the middle of the retaining member and the sliding member, the middle of the swinging member is hinged to the middle of the retaining member through a hinge rod, one end of the swinging member is placed in the middle of the sliding member, and the other end is placed in the middle of the movable member, a force-bearing member is arranged between the sliding member and the retaining member, the movable member is subjected to downward pressure, pushing one end of the swinging member downward, and the other end of the swinging member is kept to push the sliding member close to the retaining member until the force value of the force-bearing member changes.

2. The steel component durability testing system according to claim 1, characterized in that: A first tension spring is disposed at the upper end of the driving member, the upper end of the first tension spring is connected to the bracket, and the lower end is connected to the driving member, and a driving rod is disposed at the lower end of the driving member.

3. The steel component durability testing system according to claim 2, characterized in that: A movable hole and an movable chamber are provided in the middle of the driving member, the movable hole and the movable chamber are communicated, the limit block is arranged in the movable chamber, a limit rod is provided on the limit block, the limit rod is in the movable hole, a first spring is sleeved on the limit rod, one end of the first spring contacts the limit block, and the other end contacts the inner wall of the movable chamber, the limit rod passes through the movable hole and extends to the outside, and a nut is provided on the limit rod.

4. The steel component durability testing system according to claim 3, characterized in that: The pushing member is provided with a pushing surface, a blocking surface and a vertical surface. The pushing surface is connected to the blocking surface through the vertical surface. The pushing surface is located at the lower end of the blocking surface. The limiting block is provided with a rod body that cooperates with the pushing surface and the blocking surface.

5. The steel component durability testing system according to claim 4, characterized in that: The limit block is provided with a first inclined surface, and the adjustment mechanism is also provided with a second cylinder. The lower end of the second cylinder is provided with a mounting block, and the mounting block is provided with an unlocking block. The unlocking block is provided with a second inclined surface that cooperates with the first inclined surface, and the first inclined surface and the second inclined surface are arranged in parallel.

6. The steel component durability testing system according to claim 5, characterized in that: The length of the rod body is greater than the width of the unlocking block plus the width of the pushing surface.

7. The steel component durability testing system according to claim 1, characterized in that: The sliding member is provided with a first accommodating groove, a sliding groove, an installation groove and a symmetrically arranged sliding rod, the first accommodating groove is connected to the sliding groove, the sliding groove is inclined, and the installation groove is provided with a symmetrically arranged ball groove, the force-bearing member is composed of a ball head, a tube body and a positioning body, and the ball head is installed in cooperation with the ball groove.

8. The steel component durability testing system according to claim 7, characterized in that: The retaining member is provided with a second accommodating groove, a through hole and a symmetrical sliding hole, the sliding rod is arranged in the sliding hole, the second accommodating groove cooperates with the second accommodating groove, the swinging member is arranged in the first accommodating groove and the second accommodating groove, the through hole is provided with a second spring and an internal thread, the internal thread is provided with a thread head, the thread head is provided with a threaded portion, the tube body is in contact with the second spring, and the positioning body is arranged in the middle of the second spring.

9. The steel component durability testing system according to claim 8, characterized in that: A rotating rod is provided at one end of the swinging member, a roller is provided on the rotating rod, and the roller is arranged in a sliding groove. A limiting head is provided at the other end of the swinging member, an arc-shaped opening is provided at the limiting head, a retaining hole is provided in the second accommodating groove, a second tension spring is provided in the retaining hole, and the lower end of the second tension spring is connected to an end close to the limiting head.

10. The steel component durability testing system according to claim 9, characterized in that: A notch is arranged in the middle of the movable part, and a pressure rod matched with the arc-shaped opening is arranged in the notch.

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