A spring fatigue life testing device

Abstract

This utility model relates to the field of spring testing technology, and more particularly to a spring fatigue life testing device. This utility model provides a spring fatigue life testing device capable of quickly switching between tensile and compression tests on springs to meet the testing needs of different springs. A spring fatigue life testing device includes a rubber base, a protective shell, and a glass door. The protective shell is connected to the upper side of the rubber base, and the glass door is rotatably connected to the front right side of the protective shell. This utility model allows for quick switching between tensile and compression tests on springs by removing the locking screw, rotating the rotating frame, and switching the positions of the metal hook and the limiting rod. After switching, the rotating frame is fixed to a fixed plate by the locking screw. The hook on the test spring is then hung on the metal hook, causing the metal hook to move and repeatedly stretch the test spring. This achieves the effect of quickly switching between tensile and compression tests on springs to meet the testing needs of different springs.

Description

Technical Field

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

[0002] As a key elastic component, the fatigue life of springs directly affects the safety and reliability of equipment. To ensure equipment safety and reliability, fatigue life testing is necessary.

[0003] For example, a spring fatigue life testing bench with publication number CN214702709U relates to the field of spring life testing. The spring fatigue life testing bench includes a base, an L-shaped support frame fixedly connected to the upper surface of the base, a telescopic cylinder fixedly connected to the lower surface of the horizontal part of the L-shaped support frame, a pressing plate fixedly connected to the bottom of the telescopic cylinder, and a pressing mechanism at the bottom of the pressing plate for pressing the spring. Two symmetrically distributed support plates are fixedly connected to the upper surface of the base, and the test bench is fixedly connected to the top of the two support plates. Three adjusting plates are provided on the top of the test bench, and an adjusting mechanism corresponding to the adjusting plates is provided at the bottom of the test bench. The adjusting mechanism is used to adjust the distance between the adjusting plates and the pressing plate in the pressing mechanism, thereby changing the testing nodes of the spring. This utility model, by changing the testing of fatigue life at different nodes of the spring, can effectively improve the accuracy of spring fatigue life test results.

[0004] However, since this spring fatigue life test bench can only compress springs and cannot stretch them, it is difficult to meet the testing requirements of different springs and has poor versatility.

[0005] Therefore, a spring fatigue life testing device has been developed that can quickly switch between tensile and compression tests on springs to meet the testing needs of different springs. Utility Model Content

[0006] To overcome the shortcomings of existing spring fatigue life testing benches, which can only compress springs and cannot stretch them, making it difficult to meet the testing needs of different springs and having poor versatility, this utility model provides a spring fatigue life testing device that can quickly switch between tensile and compression testing of springs to meet the testing needs of different springs.

[0007] The technical solution of this utility model is as follows: a spring fatigue life testing device, comprising a rubber base, a protective shell, a glass door, a rubber pad, a shock absorber, a mounting plate, a support column, a motor, a lead screw, a transmission block, a connecting rod, an adjustment component, and a fixing component. The protective shell is connected to the upper side of the rubber base, and the glass door is rotatably connected to the front right side of the protective shell. The rubber pad is connected to the upper side of the rubber base and is located inside the protective shell. Multiple shock absorbers are connected to the upper side of the rubber pad, and the mounting plate is connected between the upper sides of the shock absorbers. The support column is connected to the upper side of the rear part of the mounting plate, and the motor is connected to the upper side of the support column. A lead screw is connected to the output shaft of the motor, and the lead screw is rotatably connected to the support column. A transmission block is threadedly connected to the lead screw, and the transmission block is slidably connected to the support column. A connecting rod is connected to the front side of the transmission block, and a connecting rod is also connected to the front lower part of the support column. The protective shell is provided with an adjustment component that can adjust the testing environment, and the connecting rod is provided with a fixing component that can fix the spring.

[0008] In one embodiment, a handle is provided on the front left side of the glass door.

[0009] In one embodiment, the regulating assembly includes a humidifier and a heater, with the humidifier connected to the upper side of the protective housing and the heater connected to the inner right side of the protective housing.

[0010] In one embodiment, the humidifier, heater, motor, and processor are electrically connected via a control module.

[0011] In one embodiment, the fixing assembly includes a fixing plate, a rotating frame, a metal hook, a limiting rod, and a locking screw. The connecting rod is connected to a fixing plate, and the fixing plate is rotatably connected to a rotating frame. The rotating frames are connected to metal hooks on the sides that are far apart from each other, and to limiting rods on the sides that are close together. The rotating frames are threadedly connected to locking screws, and the locking screws engage with the adjacent fixing plates.

[0012] In one embodiment, a knob is provided on each locking screw.

[0013] Beneficial effects: 1. This utility model allows for quick switching between tensile and compression tests on springs by removing the locking screw, rotating the rotating frame, and switching the positions of the metal hook and the limiting rod. After switching, the rotating frame is fixed to the fixed plate by the locking screw. Then, the hook on the test spring is hung on the metal hook, and the metal hook is moved to repeatedly stretch the test spring. This achieves the effect of quickly switching between tensile and compression tests on springs to meet the testing needs of different springs.

[0014] 2. This utility model achieves the effect of testing the fatigue life of springs under different environmental conditions and improving the reliability of the test by activating the humidifier and heater to adjust the temperature and humidity inside the protective shell.

[0015] 3. When the mounting plate vibrates during testing, the present invention uses a shock absorber to dampen the vibration of the mounting plate. The rubber pad and rubber base can reduce the transmission of vibration, thereby avoiding the impact on surrounding equipment and personnel and reducing equipment damage. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a three-dimensional structural diagram of the shock absorber and mounting plate of this utility model.

[0018] Figure 3 This is a three-dimensional structural diagram of the lead screw and transmission block components of this utility model.

[0019] Figure 4 This is a three-dimensional structural diagram of the locking screw and rotating frame components of this utility model.

[0020] The markings in the diagram are as follows: 1-Rubber base, 2-Protective shell, 201-Humidifier, 202-Heater, 3-Glass door, 4-Rubber pad, 5-Shock absorber, 6-Mounting plate, 7-Support column, 8-Motor, 9-Screw rod, 10-Transmission block, 11-Connecting rod, 12-Fixing plate, 13-Rotating frame, 14-Metal hook, 15-Limiting rod, 16-Locking screw. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] A spring fatigue life testing device, such as Figures 1-4 As shown, the assembly includes a rubber base 1, a protective shell 2, a glass door 3, rubber pads 4, shock absorbers 5, a mounting plate 6, a support column 7, a motor 8, a lead screw 9, a transmission block 10, a connecting rod 11, an adjustment assembly, and a fixing assembly. The protective shell 2 is connected to the upper side of the rubber base 1. The glass door 3 is rotatably connected to the front right side of the protective shell 2. A handle is provided on the front left side of the glass door 3 for easy gripping. A rubber pad 4 is connected to the upper side of the rubber base 1 and is located inside the protective shell 2. Four shock absorbers are connected to the upper side of the rubber pad 4. The upper side of the shock absorber 5 is connected to the mounting plate 6. The upper rear side of the mounting plate 6 is connected to the support column 7. The upper side of the support column 7 is connected to the motor 8. The output shaft of the motor 8 is connected to the lead screw 9. The lead screw 9 is rotatably connected to the support column 7. The lead screw 9 is threadedly connected to the transmission block 10. The transmission block 10 is slidably connected to the support column 7. The front side of the transmission block 10 is connected to the connecting rod 11. The lower front side of the support column 7 is also connected to the connecting rod 11. The protective shell 2 is provided with an adjustment component. The connecting rod 11 is provided with a fixing component.

[0023] like Figure 1 and Figure 2As shown, the adjustment assembly includes a humidifier 201 and a heater 202. The humidifier 201 is connected to the upper side of the protective shell 2, and the heater 202 is connected to the inner right side of the protective shell 2. The humidifier 201, the heater 202, the motor 8, and the processor are electrically connected through a control module.

[0024] like Figures 1-4 As shown, the fixing assembly includes a fixing plate 12, a rotating frame 13, a metal hook 14, a limiting rod 15, and a locking screw 16. The connecting rod 11 is connected to the fixing plate 12. The fixing plate 13 is rotatably connected to the fixing plate 12. The rotating frame 13 is connected to the side of the rotating frame 13 that is far apart from each other. The rotating frame 13 is connected to the side of the rotating frame 13 that is close to each other. The rotating frame 13 is threadedly connected to the locking screw 16. The locking screw 16 is provided with a knob for easy rotation. The locking screw 16 is engaged with the adjacent fixing plate 12.

[0025] When using this utility model, first place the rubber base 1 in the spring fatigue life test area, then open the glass door 3, put the test spring into the protective shell 2, so that both ends of the test spring are respectively fitted onto the limiting rod 15. After placement, close the glass door 3. The processor starts the motor 8 through the control module, drives the lead screw 9 to rotate, and causes the transmission block 10 to move up and down, thereby causing the limiting rod 15 to repeatedly press the test spring to test the fatigue life of the spring. When a tensile test is required on a spring, remove the locking screw 16, rotate the rotating frame 13, and switch the positions of the metal hook 14 and the limiting rod 15. After switching, fix the rotating frame 13 on the fixing plate 12 with the locking screw 16, and then hang the hook on the test spring on the metal hook 14. By moving the metal hook 14, the test spring is repeatedly stretched to test the fatigue life of the spring. This allows for quick switching between tensile and compression tests on the spring to meet the testing requirements of different springs. When testing the spring, the humidifier 201 and heater 202 can be turned on to adjust the temperature and humidity inside the protective shell 2, thereby enabling the fatigue life of the spring under different environmental conditions to be tested and improving the reliability of the test. When the mounting plate 6 vibrates during the test, the shock absorber 5 dampens the vibration of the mounting plate 6. The rubber pad 4 and the rubber base 1 can reduce the transmission of vibration, avoid affecting the surrounding equipment and personnel, and reduce equipment damage.

[0026] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A spring fatigue life testing apparatus, characterized by: The system includes a rubber base (1), a protective shell (2), a glass door (3), a rubber pad (4), shock absorbers (5), a mounting plate (6), a support column (7), a motor (8), a lead screw (9), a transmission block (10), a connecting rod (11), an adjustment assembly, and a fixing assembly. The protective shell (2) is connected to the upper side of the rubber base (1). The glass door (3) is rotatably connected to the front right side of the protective shell (2). The rubber pad (4) is connected to the upper side of the rubber base (1) and is located inside the protective shell (2). Multiple shock absorbers (5) are connected to the upper side of the rubber pad (4), and the upper sides of the shock absorbers (5) are connected by a mounting plate. Mounting plate (6), the upper rear side of mounting plate (6) is connected to support column (7), the upper side of support column (7) is connected to motor (8), the output shaft of motor (8) is connected to lead screw (9), lead screw (9) is rotatably connected to support column (7), the lead screw (9) is threadedly connected to transmission block (10), transmission block (10) is slidably connected to support column (7), the front side of transmission block (10) is connected to connecting rod (11), the lower front side of support column (7) is also connected to connecting rod (11), the protective shell (2) is provided with adjustment component that can adjust the test environment, and the connecting rod (11) is provided with fixing component that can fix spring.

2. A spring fatigue life testing apparatus as claimed in claim 1, characterized in that: The glass door (3) has a handle on the front left side.

3. A spring fatigue life testing apparatus as claimed in claim 1, wherein: The adjustment assembly includes a humidifier (201) and a heater (202). The humidifier (201) is connected to the upper side of the protective shell (2), and the heater (202) is connected to the inner right side of the protective shell (2).

4. A spring fatigue life testing apparatus as claimed in claim 3, wherein: The humidifier (201), heater (202), motor (8) and processor are electrically connected via a control module.

5. A spring fatigue life testing apparatus as claimed in claim 1, wherein: The fixing components include a fixing plate (12), a rotating frame (13), a metal hook (14), a limiting rod (15), and a locking screw (16). The connecting rod (11) is connected to the fixing plate (12), the fixing plate (12) is rotatably connected to the rotating frame (13), the rotating frames (13) are connected to the side of each other that are far apart, the rotating frames (13) are connected to the side of each other that are close together, and the rotating frames (13) are connected to the locking screw (16) threadedly. The locking screw (16) is engaged with the adjacent fixing plate (12).

6. A spring fatigue life testing apparatus as claimed in claim 5, wherein: A knob is provided on each locking screw (16).

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