Spring fatigue test mechanism

Abstract

A spring fatigue testing mechanism comprises an equipment base, a lead screw, a lead screw disc, a pull rod, a pressing wheel, a cam and a cross beam, a testing table is arranged in the equipment base, the rear portion of the testing table is fixedly connected with a protection table, the interior of a protection beam is fixedly connected with a protection shell shaft rod, and the protection table is matched with the protection shell shaft rod and connected with the protection shell shaft rod. The upper portion of the protective beam is fixedly connected with the protective observation cover, the upper portion of the protective observation cover is provided with a handle, the side portion of the test board is fixedly connected with the supporting block, the front portion of the protective observation cover corresponds to the supporting block in position, the test board is matched with the test support, the test board is connected with the test support, and the test support slides in the test board. The interior of the test board is fixedly connected with the lead screw seat.

Description

Technical Field

[0001] This utility model relates to the field of fatigue testing, and in particular to a spring fatigue testing mechanism. Background Technology

[0002] An existing patent (publication number: CN220729599U) discloses a spring fatigue testing mechanism. It includes a testing platform and a movable platform. The movable platform is slidably disposed at the front of the testing platform. A movable frame is fixedly connected to the top of the movable platform. A driving mechanism is provided between the movable frame and the testing platform. A base plate is fixedly connected to the top of the testing platform. Several top plates are slidably disposed at the front of the testing platform. A prompting mechanism is provided between the top plates and the movable platform. However, this device, which claims that "the internal threaded groove is connected to an external threaded sleeve," relies on the external threaded sleeve inside the testing platform to fix the spring. During the test, if the spring breaks, internal steel rings and other debris may be ejected, posing a certain safety hazard. Summary of the Invention

[0003] This utility model addresses the aforementioned shortcomings of existing technologies by providing a spring fatigue testing mechanism that, during use, if the test spring breaks during testing, uses a central rod inside the rear spring seat to position the test spring, preventing the steel ring from popping out. Simultaneously, a protective observation cover on the upper part of the test platform protects the test spring inside the central rod, preventing the steel ring and debris from flying, thereby increasing the safety of the equipment.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A spring fatigue testing mechanism includes a base, a lead screw, a lead screw disc, a tie rod, a pressure roller, a cam, and a crossbeam. The base has a test platform inside, with its rear fixedly connected to a protective platform. The protective beam is fixedly connected to a protective shell shaft. The protective platform is adapted to the protective shell shaft and is connected to it, allowing the shaft to rotate within the platform. The upper part of the protective beam is fixedly connected to a protective observation cover, which has a handle. The side of the test platform is fixedly connected to a support block, and the front of the observation cover corresponds to the support block. The test platform is adapted to a test support and is connected to it, allowing the support to slide within the platform. The test platform is fixedly connected to a lead screw seat inside, and the rear of the lead screw is rotatably connected to the lead screw seat. The front of the test platform has a lead screw groove adapted to the lead screw and connected to it, allowing the lead screw to rotate within the groove.

[0006] The front part of the lead screw is fixedly connected to the lead screw disc, the surface of the lead screw disc has a disc wheel rod, the lower part of the test bracket is fixedly connected to the threaded seat, the threaded seat is threaded inside the lead screw, the upper part of the test bracket has a rear end spring seat, the front of the rear end spring seat is fixedly connected to the center rod, the test spring is sleeved into the side of the center rod, the side of the equipment base is fixedly connected to the pull rod seat, the pull rod seat is adapted to the pull rod, and the pull rod seat is connected to the pull rod.

[0007] The pull rod slides inside the pull rod seat, the rear part of the pull rod is fixedly connected to the cam seat, the cam seat is fixedly connected to the pressure roller shaft, the pressure roller shaft is adapted to the pressure roller, the pressure roller shaft is connected to the pressure roller, the pressure roller rotates inside the pressure roller shaft, the rear part of the equipment base is fixedly connected to the cam motor, and the upper part of the cam motor is fixedly connected to the cam.

[0008] The pressure roller rotates on the side of the cam, the front of the pull rod has a rotating shaft, the rear of the test rod has a rotating groove, the rotating shaft and the rotating groove are adapted to each other, the rotating shaft is connected to the rotating groove, the rotating groove rotates on the side of the rotating shaft, the front of the equipment base is fixedly connected to the test rod support seat, the test rod support seat is adapted to the test rod, the test rod support seat is connected to the test rod, the test rod slides inside the test rod support seat, and the front of the test rod is fixedly connected to the crossbeam. Beneficial effects

[0009] 1. In the use of this utility model spring fatigue testing mechanism, if the test spring breaks during the test, the test spring is positioned by the central rod inside the rear spring seat to prevent the steel ring from popping out. At the same time, the protective observation cover on the upper part of the test platform protects the test spring inside the central rod, thereby preventing the steel ring and debris from flying, thus increasing the safety of the equipment.

[0010] 2. During the use of this utility model spring fatigue testing mechanism, the test spring is guided by the central rod inside the rear spring seat, and the cam drives the rear spring seat to perform fatigue testing on the test spring. Both the rear spring seat and the rear spring seat have mating arcs, so that the test spring is always kept inside the rear spring seat and the rear spring seat, avoiding falling off due to gravity, thereby increasing the stability of the equipment.

[0011] 3. During the use of this utility model spring fatigue testing mechanism, the disc wheel rod at the front of the equipment base drives the lead screw to rotate, which in turn drives the rear end spring seat at the top of the threaded seat to move. This allows the equipment to use different types of test springs, thereby increasing the adaptability of the equipment. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a spring fatigue testing mechanism according to the present invention.

[0013] Figure 2This is a three-dimensional assembly diagram of the protective observation cover structure of the spring fatigue testing mechanism described in this utility model.

[0014] Figure 3 This is a partial cross-sectional three-dimensional assembly diagram of the test bench structure of the spring fatigue testing mechanism described in this utility model.

[0015] Figure 4 This is a three-dimensional assembly diagram of the tie rod structure of a spring fatigue testing mechanism according to the present invention.

[0016] Figure 5 This is a three-dimensional assembly diagram of the cam seat structure of a spring fatigue testing mechanism according to the present invention.

[0017] Figure 6 This is a three-dimensional assembly schematic diagram of a partial cross-section of the central rod structure of a spring fatigue testing mechanism according to the present invention. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments:

[0019] Example 1:

[0020] A spring fatigue testing mechanism includes a base 01, a lead screw 11, a lead screw disc 13, a pull rod 20, a pressure roller 23, a cam 25, and a crossbeam 30. The base 01 has a test platform 02 inside, with its rear end fixedly connected to a protective platform 03. A protective beam 04 is fixedly connected to a protective shell shaft 05 inside. The protective platform 03 is adapted to the protective shell shaft 05 and is connected to it. The protective shell shaft 05 rotates inside the protective platform 03. The upper part of the protective beam 04 is fixedly connected to a protective observation cover 06. During use, if the test spring 18 breaks during the test, the test spring 18 is positioned by the central rod 17 inside the rear spring seat 16 to prevent the steel ring from popping out, while also cooperating with the test platform 01. The upper protective observation cover 06 protects the test spring 18 inside the center rod 17, thereby preventing the steel ring and debris from flying and increasing the safety of the equipment. The upper part of the protective observation cover 06 has a handle 07. The side of the test platform 02 is fixedly connected to the support block 08. The front of the protective observation cover 06 corresponds to the position of the support block 08. The test platform 02 is adapted to the test bracket 09. The test platform 02 is connected to the test bracket 09. The test bracket 09 slides inside the test platform 02. The inside of the test platform 02 is fixedly connected to the lead screw seat 10. The rear of the lead screw 11 is rotatably connected to the inside of the lead screw seat 10. The front of the test platform 02 has a lead screw shaft groove 12. The lead screw shaft groove 12 is adapted to the lead screw 11. The lead screw shaft groove 12 is connected to the lead screw 11. The lead screw 11 rotates inside the lead screw shaft groove 12.

[0021] Example 2:

[0022] The lead screw 11 of this utility model is fixedly connected to the lead screw disc 13 at the front. During the use of the spring fatigue testing mechanism, the lead screw 11 is rotated by the disc wheel rod 14 at the front of the equipment base 01, which causes the lead screw 11 to move the rear end spring seat 16 on the upper part of the threaded seat 15. This allows the equipment to use different types of test springs 18, thereby increasing the adaptability of the equipment. The surface of the lead screw disc 13 has the disc wheel rod 14. The lower part of the test bracket 09 is fixedly connected to the threaded seat 15. The threaded seat 15 is threaded inside the lead screw 11. The upper part of the test bracket 09 has a rear end spring seat 16. The front of the rear end spring seat 16 is fixedly connected to the center rod 17. The test spring 18 is fitted into the side of the center rod 17. The side of the equipment base 01 is fixedly connected to the pull rod seat 19. The pull rod seat 19 is adapted to the pull rod 20 and is connected to the pull rod 20.

[0023] Example 3:

[0024] The pull rod 20 of this utility model slides inside the pull rod seat 19. The rear part of the pull rod 20 is fixedly connected to the cam seat 21. The cam seat 21 is fixedly connected to the pressure roller shaft 22. The pressure roller shaft 22 is adapted to the pressure roller 23. The pressure roller shaft 22 is connected to the pressure roller 23. The pressure roller 23 rotates inside the pressure roller shaft 22. The rear part of the equipment base 01 is fixedly connected to the cam motor 24. The upper part of the cam motor 24 is fixedly connected to the cam 25.

[0025] Example 4:

[0026] The pressure roller 23 of this utility model rotates on the side of the cam 25. The front of the pull rod 20 has a rotating shaft 26, and the rear of the test rod 27 has a rotating groove 28. The rotating shaft 26 is adapted to the rotating groove 28. The rotating shaft 26 is connected to the rotating groove 28. The rotating groove 28 rotates on the side of the rotating shaft 26. The front of the equipment base 01 is fixedly connected to the test rod support seat 29. The test rod support seat 29 is adapted to the test rod 27. The test rod support seat 29 is connected to the test rod 27. The test rod 27 slides inside the test rod support seat 29. The front of the test rod 27 is fixedly connected to the crossbeam 30.

[0027] Example 5:

[0028] The crossbeam 30 of this utility model is fixedly connected to the rear spring seat 31. The rear spring seat 31 has a central rod groove 32 inside, which is adapted to the central rod 17. The central rod groove 32 is connected to the central rod 17, and the central rod 17 is inserted into the central rod groove 32. The rear part of the test spring 18 corresponds to the position of the rear spring seat 16, and the front part of the test spring 18 corresponds to the position of the rear spring seat 31. During the use of the spring fatigue testing mechanism, the test spring 18 is guided by the central rod 17 inside the rear spring seat 16, and the cam 25 drives the rear spring seat 31 to perform fatigue testing on the test spring 18. Both the rear spring seat 16 and the rear spring seat 31 have a mating arc inside, so that the test spring 18 is always kept inside the rear spring seat 16 and the rear spring seat 31, avoiding falling off due to gravity, thereby increasing the stability of the equipment. The protective observation cover 06 corresponds to the upper part of the test spring 18.

[0029] Example 6:

[0030] Installation steps of this utility model: Fix the rear of the test bench 02 to the protective platform 03; fix the inside of the protective beam 04 to the protective shell shaft 05; rotate the protective shell shaft 05 inside the protective platform 03; fix the upper part of the protective beam 04 to the protective observation cover 06; fix the side of the test bench 02 to the support block 08; align the front of the protective observation cover 06 with the support block 08; slide the test bracket 09 inside the test bench 02; fix the inside of the test bench 02 to the lead screw seat 10; rotatably connect the rear of the lead screw 11 to the inside of the lead screw seat 10; rotate the lead screw 11 inside the lead screw shaft groove 12; fix the front of the lead screw 11 to the lead screw disc 13; fix the lower part of the test bracket 09 to the threaded seat 15; thread the threaded seat 15 inside the lead screw 11; fix the front of the rear spring seat 16 to the center rod 17; fit the test spring 18 onto the side of the center rod 17; connect the side of the equipment base 01 to the pull rod seat. 19 is fixedly connected. The pull rod 20 slides inside the pull rod seat 19. The rear part of the pull rod 20 is fixedly connected to the cam seat 21. The inside of the cam seat 21 is fixedly connected to the pressure roller shaft 22. The pressure roller 23 rotates inside the pressure roller shaft 22. The rear part of the equipment base 01 is fixedly connected to the cam motor 24. The upper part of the cam motor 24 is fixedly connected to the cam 25. The pressure roller 23 rotates on the side of the cam 25. The rotary groove 28 rotates on the side of the rotary shaft 26. The front part of the equipment base 01 is fixedly connected to the test rod support seat 29. The test rod 27 slides inside the test rod support seat 29. The front part of the test rod 27 is fixedly connected to the crossbeam 30. The inside of the crossbeam 30 is fixedly connected to the rear spring seat 31. The center rod 17 is inserted into the center rod groove 32. The rear part of the test spring 18 is aligned with the position of the rear spring seat 16. The front part of the test spring 18 is aligned with the position of the rear spring seat 31. The protective observation cover 06 is aligned with the upper part of the test spring 18.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A spring fatigue testing mechanism, characterized in that: The equipment includes a base (01), a lead screw (11), a lead screw disc (13), a pull rod (20), a pressure roller (23), a cam (25), and a crossbeam (30). The base (01) has a test platform (02) inside. The rear of the test platform (02) is fixedly connected to a protective platform (03). The protective beam (04) is fixedly connected to a protective shell shaft (05). The protective platform (03) is adapted to the protective shell shaft (05). The protective platform (03) is connected to the protective shell shaft (05). The protective shell shaft (05) rotates inside the protective platform (03). The upper part of the protective beam (04) is fixedly connected to a protective observation cover (06). The upper part of the protective observation cover (06) has a handle (07). The side of the test bench (02) is fixedly connected to the support block (08), the front of the protective observation cover (06) corresponds to the position of the support block (08), the test bench (02) is adapted to the test bracket (09), the test bench (02) is connected to the test bracket (09), the test bracket (09) slides inside the test bench (02), the inside of the test bench (02) is fixedly connected to the lead screw seat (10), the rear of the lead screw (11) is rotatably connected to the inside of the lead screw seat (10), the front of the test bench (02) has a lead screw shaft groove (12), the lead screw shaft groove (12) is adapted to the lead screw (11), the lead screw shaft groove (12) is connected to the lead screw (11), and the lead screw (11) rotates inside the lead screw shaft groove (12).

2. The spring fatigue testing mechanism according to claim 1, characterized in that: The front part of the lead screw (11) is fixedly connected to the lead screw disc (13), the surface of the lead screw disc (13) has a disc wheel rod (14), the lower part of the test bracket (09) is fixedly connected to the threaded seat (15), the threaded seat (15) is threaded inside the lead screw (11), the upper part of the test bracket (09) has a rear end spring seat (16), the front part of the rear end spring seat (16) is fixedly connected to the center rod (17), the test spring (18) is sleeved into the side of the center rod (17), the side of the equipment base (01) is fixedly connected to the pull rod seat (19), the pull rod seat (19) is adapted to the pull rod (20), and the pull rod seat (19) is connected to the pull rod (20).

3. The spring fatigue testing mechanism according to claim 2, characterized in that: The pull rod (20) slides inside the pull rod seat (19). The rear part of the pull rod (20) is fixedly connected to the cam seat (21). The cam seat (21) is fixedly connected to the pressure roller shaft (22). The pressure roller shaft (22) is adapted to the pressure roller (23). The pressure roller shaft (22) is connected to the pressure roller (23). The pressure roller (23) rotates inside the pressure roller shaft (22). The rear part of the equipment base (01) is fixedly connected to the cam motor (24). The upper part of the cam motor (24) is fixedly connected to the cam (25).

4. A spring fatigue testing mechanism according to claim 3, characterized in that: The pressure roller (23) rotates on the side of the cam (25), the front of the pull rod (20) has a rotating shaft (26), the rear of the test rod (27) has a rotating groove (28), the rotating shaft (26) is adapted to the rotating groove (28), the rotating shaft (26) is connected to the rotating groove (28), the rotating groove (28) rotates on the side of the rotating shaft (26), the front of the equipment base (01) is fixedly connected to the test rod support seat (29), the test rod support seat (29) is adapted to the test rod (27), the test rod support seat (29) is connected to the test rod (27), the test rod (27) slides inside the test rod support seat (29), and the front of the test rod (27) is fixedly connected to the crossbeam (30).

5. A spring fatigue testing mechanism according to claim 4, characterized in that: The crossbeam (30) is fixedly connected to the rear end spring seat (31). The rear end spring seat (31) has a central rod groove (32) inside. The central rod groove (32) is adapted to the central rod (17). The central rod groove (32) is connected to the central rod (17). The central rod (17) is inserted into the central rod groove (32). The rear part of the test spring (18) corresponds to the position of the rear end spring seat (16). The front part of the test spring (18) corresponds to the position of the rear end spring seat (31). The protective observation cover (06) corresponds to the upper part of the test spring (18).

Images