Multi-station spring fatigue test tool

Abstract

The utility model discloses a multi-station spring fatigue test tool, relates to the technical field of fatigue test tools, and aims to solve the problems that a current spring test tool is complex in structure, a plurality of springs are simultaneously pushed by an air cylinder to deform during pressure application, the springs in multiple stations cannot be independently extruded, the pressure required during extrusion is relatively high, and the working efficiency is high. The technical problem that the service life of a fatigue test tool which works for a long time and with high strength is greatly shortened is solved, the fatigue test tool comprises a multi-station pushing mechanism and a bearing rack arranged at the bottom of the multi-station pushing mechanism, the multi-station pushing mechanism comprises a speed reducer, a motor connected to an input shaft of the speed reducer is fixedly installed at the bottom of the speed reducer, and the bearing rack is connected with the motor. According to the multi-station spring extrusion device, the mode that inertia is generated by eccentric balance weight to assist in reciprocating extrusion and alternate acting is adopted, spring bodies in multiple stations can be independently extruded, pressure needed during extrusion is reduced, and the service life of the device is greatly prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of fatigue testing tooling, and more specifically to a multi-station spring fatigue testing tooling. Background Art

[0002] A spring is a mechanical part that uses elasticity to work. Parts made of elastic materials deform under external force and return to their original shape after the external force is removed. It is also called a "spring". It is generally made of spring steel. Fatigue testing of finished springs is generally done using a fatigue tester, and the spring test fixture is the mechanical transmission device of the spring tester, which is mainly used to repeatedly squeeze the spring to push the spring for deformation and obtain the fatigue strength of the spring.

[0003] The spring testing tooling in the prior art has a complex structure, and is mostly used to apply pressure to the spring in a vertical direction. When applying pressure, multiple springs are pushed and deformed at the same time by a cylinder, and it is impossible to extrude the springs in multiple stations individually. The pressure required for extrusion is relatively high, which greatly reduces the service life of fatigue testing tooling that works for a long time and at high intensity. In view of this, we propose a multi-station spring fatigue testing tooling. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art, meet the actual needs, and provide a multi-station spring fatigue testing tool to solve the technical problems that the current spring testing tool has a complex structure, multiple springs are deformed by pushing them simultaneously through the cylinder when pressure is applied, the springs in the multiple stations cannot be squeezed individually, and the pressure required for squeezing is relatively high, which greatly reduces the service life of the fatigue testing tool for long-term and high-intensity work.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a multi-station spring fatigue test tool, comprising a multi-station pushing mechanism and a supporting frame arranged at the bottom of the multi-station pushing mechanism;

[0006] The multi-station pushing mechanism includes a reducer, a motor connected to the reducer input shaft is fixedly installed at the bottom of the reducer, and a pushing assembly connected to the reducer output shaft is fixedly installed at the top of the reducer, and a plurality of clamping mechanisms for pushing and deforming the spring body are arranged in a circular array on the pushing assembly;

[0007] The pushing assembly includes a shell, a circular hole is opened at the center of the top end of the shell, and a shaft A is rotatably arranged in the circular hole, one end of the shaft A extending into the shell is constructed with a counterweight cam, and one side of the bottom end of the counterweight cam is constructed with a shaft B, a multi-axis extrusion assembly is rotatably installed on the outer edge surface of the shaft B, and the multi-axis extrusion assembly is fixedly connected to the output shaft of the reducer, a plurality of guide cylinders are connected in an annular array on the outer edge surface of the shell, and the multi-axis extrusion assembly is slidably arranged in the plurality of guide cylinders, the multi-axis extrusion assembly is fixedly connected to a plurality of clamping mechanisms, and the clamping mechanisms are fixedly installed at the bottom ends of the guide cylinders.

[0008] The utility model drives the multi-axis extrusion assembly to rotate in the shell through a reducer provided with an electric motor, and drives the counterweight cam to rotate with the shaft A as the axis. The inertia generated when the counterweight cam rotates assists the multi-axis extrusion assembly to rotate with the shaft B as the axis, thereby promoting the multi-axis extrusion assembly to slide back and forth with multiple guide cylinders, thereby cooperating with multiple clamping mechanisms to complete the reciprocating extrusion of multiple spring bodies. The inertia generated by the counterweight cam is used to assist the reducer provided with an electric motor to reciprocate and extrude multiple spring bodies. The counterweight cam can be used for auxiliary pressure application, and after the counterweight cam rotates one circle, the clamping mechanisms provided on the multiple guide cylinders are worked in turn, so that the spring bodies in multiple stations can be extruded separately. The inertial counterweight is used to apply pressure, which reduces the pressure required for extrusion and greatly improves the service life of the equipment.

[0009] Preferably, the multi-axis extrusion assembly includes a support, which is rotatably mounted on the shaft B, and a transmission shaft A is constructed at the center of the bottom end of the support, and a transmission arm is rotatably mounted on the outer edge surface of the transmission shaft A.

[0010] Preferably, a transmission shaft B is constructed at the center of the bottom end of the transmission arm, and the transmission shaft B is fixedly connected to the output shaft of the reducer. A plurality of transmission shafts are hingedly installed in a circular array on the outer edge surface of the support, and a movable seat is hingedly installed at one end of the transmission shaft extending into the guide cylinder, and the movable seat is slidably arranged in the guide cylinder.

[0011] Preferably, the clamping mechanism includes a base plate and a U-shaped slide seat slidably arranged on the base plate, an L-shaped clamp plate is detachably installed on the side of the top end of the base plate away from the guide cylinder, and a baffle plate is fixedly installed on the side of the top end of the U-shaped slide seat away from the L-shaped clamp plate, and a round rod is fixedly installed on one side of the baffle plate and is passed through the L-shaped clamp plate for setting the spring body.

[0012] Preferably, a pushing rod is constructed at the center of one side of the U-shaped slide seat, and the pushing rod is fixedly connected to the movable seat, a supporting arm is constructed at the center of the bottom end of the base plate, and the supporting arm is welded and fixedly installed on the bottom of the guide cylinder.

[0013] Preferably, guide keys are constructed on both sides of the top of the base plate, and guide grooves for the guide keys to slide are opened on both sides of the top of the U-shaped slide. A positioning key is constructed in the center of the bottom end of the U-shaped slide, and a positioning groove for the positioning key to slide is opened in the center of the top of the base plate.

[0014] Preferably, a threaded rod is centrally constructed on one side of the top of the base plate, and the L-shaped clamping plate is arranged on the threaded rod, and a locking nut abutting against the L-shaped clamping plate is threadedly mounted on the outer edge surface of the threaded rod.

[0015] Preferably, the supporting frame comprises a bracket and a support, the bracket is fixedly mounted on the top of the bracket, and the reducer is fixedly mounted on the top of the bracket.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The utility model drives the multi-axis extrusion assembly to rotate in the shell through a reducer equipped with an electric motor, and drives the counterweight cam to rotate with the shaft A as the axis. The inertia generated when the counterweight cam rotates assists the multi-axis extrusion assembly to rotate with the shaft B as the axis, thereby promoting the multi-axis extrusion assembly to slide back and forth with multiple guide cylinders, thereby cooperating with multiple clamping mechanisms to complete the reciprocating extrusion of multiple spring bodies. The inertia generated by the counterweight cam assists the reducer equipped with an electric motor to reciprocate and extrude multiple spring bodies. The counterweight cam can be used for auxiliary pressure application, and after the counterweight cam rotates one circle, the clamping mechanisms arranged on the multiple guide cylinders are worked in turn, so that the spring bodies in multiple stations can be extruded separately. The inertial counterweight is used to apply pressure, which reduces the pressure required for extrusion and greatly improves the service life of the equipment.

[0018] 2. The utility model also extrude the spring body through the clamping mechanism. When the U-shaped slide is pushed and moved, the U-shaped slide slides with the help of two guide keys, thereby squeezing the spring body sleeved on the round rod through the L-shaped clamp and the baffle. The pressure required for extrusion is provided by a multi-axis extrusion assembly rotating with the shaft A and the transmission shaft B as the axis, and in the process of the rotation of the support, multiple transmission shafts with movable seats are pushed in turn to extrude the spring body. When the pressure gradually disappears, the reaction force generated when the spring body is reset will push the movable seat to reset, further reducing the power required for the rotation of the support. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the multi-station pushing mechanism in the utility model;

[0021] Figure 3 It is a schematic diagram of the internal structure of the pushing component in the utility model in a cross-sectional state;

[0022] Figure 4 It is a schematic diagram of the structure of the counterweight cam and the multi-axis extrusion assembly in the utility model in a disassembled state;

[0023] Figure 5 This is a schematic diagram of the structure of the clamping mechanism in the utility model in a state of pushing the spring;

[0024] Figure 6 It is a cross-sectional view of the clamping mechanism of the utility model in a state of pushing the spring.

[0025] Description of the numbers in the figure:

[0026] 1. Multi-station pushing mechanism; 101. reducer; 102. motor; 2. pushing assembly; 201. housing; 202. shaft A; 203. counterweight cam; 204. shaft B; 205. guide cylinder; 3. clamping mechanism; 301. bottom plate; 302. U-shaped slide; 303. L-shaped clamp; 304. baffle; 305. round rod; 306. pushing rod; 307. support arm; 308. guide groove; 309. guide key; 310. positioning key; 311. positioning groove; 312. threaded rod; 313. locking nut; 4. multi-axis extrusion assembly; 401. support; 402. transmission shaft A; 403. transmission arm; 404. transmission shaft B; 405. transmission shaft; 406. movable seat; 5. spring body; 6. bracket; 7. bracket. DETAILED DESCRIPTION

[0027] like Figure 1 As shown, the utility model relates to a multi-station spring fatigue test fixture, comprising a multi-station pushing mechanism 1 and a supporting frame arranged at the bottom of the multi-station pushing mechanism 1, the supporting frame comprising a bracket 6 and a bracket 7, the bracket 7 is fixedly installed on the top of the bracket 6, and the reducer 101 is fixedly installed on the top of the bracket 7;

[0028] like Figure 1 , Figure 2 , Figure 3As shown, in the embodiment of the utility model, in order to reduce the pressure required for extrusion and to increase the service life of the equipment, the multi-station pushing mechanism 1 includes a reducer 101, a motor 102 connected to the input shaft of the reducer 101 is fixedly installed at the bottom of the reducer 101, and a pushing assembly 2 connected to the output shaft of the reducer 101 is fixedly installed on the top of the reducer 101, and a plurality of clamping mechanisms 3 for pushing and deforming the spring body 5 are arranged in an annular array on the pushing assembly 2, and the pushing assembly 2 includes a shell 201, A circular hole is provided at the center of the top of the shell 201, and a shaft A202 is rotatably arranged in the circular hole, and a counterweight cam 203 is constructed at one end of the shaft A202 extending into the shell 201, and a shaft B204 is constructed on one side of the bottom end of the counterweight cam 203, and a multi-axis extrusion component 4 is rotatably installed on the outer edge surface of the shaft B204, and the multi-axis extrusion component 4 is fixedly connected to the output shaft of the reducer 101, and a plurality of guide cylinders 205 are connected in an annular array on the outer edge surface of the shell 201, and the multi-axis extrusion component 4 slides The multi-axis extrusion assembly 4 is arranged in a plurality of guide cylinders 205, and is fixedly connected to a plurality of clamping mechanisms 3, and the clamping mechanisms 3 are fixedly installed at the bottom end of the guide cylinder 205. The multi-axis extrusion assembly 4 is driven to rotate in the housing 201 by a reducer 101 provided with an electric motor 102, and the counterweight cam 203 is driven to rotate with the shaft A202 as the axis. The inertia generated when the counterweight cam 203 rotates assists the multi-axis extrusion assembly 4 to rotate with the shaft B204 as the axis, thereby promoting the multi-axis extrusion assembly 4 to slide back and forth with the plurality of guide cylinders 205. In this way, multiple clamping mechanisms 3 are cooperated to complete the reciprocating extrusion of multiple spring bodies 5. The inertia generated by the counterweight cam 203 is used to assist the reducer 101 equipped with the electric motor 102 to reciprocate and extrude multiple spring bodies 5. The counterweight cam 203 can be used to assist in applying pressure, and after the counterweight cam 203 rotates one circle, the clamping mechanisms 3 set on the multiple guide cylinders 205 are taken turns to work. The spring bodies 5 in multiple stations can be extruded separately, and the inertial counterweight is used to apply pressure, which reduces the pressure required for extrusion and greatly improves the service life of the equipment.

[0029] like Figure 3 , Figure 4 , Figure 5As shown, in the embodiment of the utility model, in order to further reduce the power required for the rotation of the support 401, the multi-axis extrusion assembly 4 includes a support 401, the support 401 is rotatably mounted on the shaft B204, and a transmission shaft A402 is configured at the center of the bottom end of the support 401, and a transmission arm 403 is rotatably mounted on the outer edge surface of the transmission shaft A402, and a transmission shaft B404 is configured at the center of the bottom end of the transmission arm 403, and the transmission shaft B404 is fixedly connected to the output shaft of the reducer 101, and a plurality of transmission arms are hingedly mounted in a circular array on the outer edge surface of the support 401. Axle 405, and one end of the transmission shaft 405 extending into the guide cylinder 205 is hingedly installed with a movable seat 406, and the movable seat 406 is slidably arranged in the guide cylinder 205. The pressure required for extrusion is provided by a multi-axis extrusion component 4 rotating around the shaft A202 and the transmission shaft B404, and during the rotation of the support 401, multiple transmission shafts 405 with movable seats 406 are pushed in turn to extrude the spring body 5. When the pressure gradually disappears, the reaction force generated when the spring body 5 is reset will push the movable seat 406 to reset, further reducing the power required for the rotation of the support 401.

[0030] like Figure 4 , Figure 5 , Figure 6As shown, in the embodiment of the present utility model, in order to make the pressure stable, the clamping mechanism 3 includes a base plate 301 and a U-shaped slide seat 302 slidably arranged on the base plate 301, the top of the base plate 301 away from the guide cylinder 205 is detachably installed with an L-shaped clamping plate 303, and the top of the U-shaped slide seat 302 away from the L-shaped clamping plate 303 is fixedly installed with a baffle plate 304, one side of the baffle plate 304 is fixedly installed with a round rod 305 that penetrates the L-shaped clamping plate 303 and is used to set the spring body 5, a pushing rod 306 is constructed at the center of one side of the U-shaped slide seat 302, and the pushing rod 306 is fixedly connected to the movable seat 406, a support arm 307 is constructed at the bottom center of the base plate 301, and the support arm 307 is welded and fixedly installed at the bottom of the guide cylinder 205, guide keys 309 are constructed on both sides of the top of the base plate 301, and the U-shaped slide seat 3 The top of the 302 is provided with guide grooves 308 for the guide key 309 to slide on both sides, the bottom of the U-shaped slide seat 302 is centrally constructed with a positioning key 310, and the top of the bottom plate 301 is centrally constructed with a positioning groove 311 for the positioning key 310 to slide on, a threaded rod 312 is centrally constructed on one side of the top of the bottom plate 301, and the L-shaped clamping plate 303 is arranged on the threaded rod 312, and a locking nut 313 that abuts the L-shaped clamping plate 303 is threadedly installed on the outer edge surface of the threaded rod 312, and the spring body 5 is squeezed by the clamping mechanism 3. When the U-shaped slide seat 302 equipped with the pushing rod 306 is pushed and moved, the U-shaped slide seat 302 slides with the help of the two guide keys 309 and the positioning key 310, so that the spring body 5 mounted on the round rod 305 is squeezed by the L-shaped clamping plate 303 and the baffle 304, and the pressure is relatively stable by adopting a linear pressure method.

[0031] Working principle: This embodiment provides a multi-station spring fatigue test fixture. When in use, unscrew the locking nut 313, remove the L-shaped clamp 303 from the locking nut 313, and sleeve the spring body 5 on the round rod 305, and complete the installation of the L-shaped clamp 303 and the tightening of the locking nut 313 again. Then, the motor 102 can cooperate with the reducer 101 to drive the support 401 to rotate around the shaft A202 and the transmission shaft B404 as the axis. During the eccentric rotation, the transmission shaft B404 continuously reciprocates and pushes the multiple transmission shafts 405 arranged on the movable seat 406 to slide in the multiple guide cylinders 205 respectively, and drives the counterweight cam 203 to rotate around the shaft A202 as the axis. The center rotates, and the inertia generated by the counterweight cam 203 is used to assist the reducer 101 equipped with the motor 102 to reciprocately extrude the multiple spring bodies 5. The counterweight cam 203 is used to assist in applying pressure, and after the counterweight cam 203 rotates one circle, the clamping mechanisms 3 set on the multiple guide cylinders 205 are taken turns to work, and the U-shaped slide 302 is pushed by the pushing rod 306 to slide on the bottom plate 301, so that the baffle 304 and the L-shaped clamping plate 303 complete the extrusion of the spring body 5 from both sides, thereby completing the separate extrusion of the spring body 5 in the multiple stations, and the inertial counterweight is used to apply pressure, which reduces the pressure required for extrusion and greatly improves the service life of the equipment.

[0032] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A multi-station spring fatigue test tool, characterized in that: It comprises a multi-station pushing mechanism (1) and a supporting frame arranged at the bottom of the multi-station pushing mechanism (1); The multi-station pushing mechanism (1) comprises a reducer (101), a motor (102) connected to the input shaft of the reducer (101) is fixedly mounted at the bottom of the reducer (101), and a pushing assembly (2) connected to the output shaft of the reducer (101) is fixedly mounted at the top of the reducer (101), and a plurality of clamping mechanisms (3) for pushing and deforming the spring body (5) are arranged in a ring array on the pushing assembly (2); The pushing assembly (2) comprises a shell (201), a circular hole is provided at the center of the top end of the shell (201), and a shaft A (202) is rotatably arranged in the circular hole, one end of the shaft A (202) extending into the shell (201) is configured with a counterweight cam (203), and one side of the bottom end of the counterweight cam (203) is configured with a shaft B (204), a multi-axis extrusion assembly (4) is rotatably mounted on the outer edge surface of the shaft B (204), and the multi-axis extrusion assembly (4) is fixedly connected to the output shaft of the reducer (101), a plurality of guide cylinders (205) are connected in an annular array on the outer edge surface of the shell (201), and the multi-axis extrusion assembly (4) is slidably arranged in the plurality of guide cylinders (205), the multi-axis extrusion assembly (4) is fixedly connected to a plurality of clamping mechanisms (3), and the clamping mechanisms (3) are fixedly mounted on the bottom ends of the guide cylinders (205).

2. A multi-station spring fatigue testing tool according to claim 1, characterized in that: The multi-axis extrusion assembly (4) comprises a support (401), wherein the support (401) is rotatably mounted on the shaft B (204), and a transmission shaft A (402) is constructed at the bottom center of the support (401), and a transmission arm (403) is rotatably mounted on the outer edge surface of the transmission shaft A (402).

3. The multi-station spring fatigue testing tool according to claim 2, characterized in that: A transmission shaft B (404) is constructed at the center of the bottom end of the transmission arm (403), and the transmission shaft B (404) is fixedly connected to the output shaft of the reducer (101). A plurality of transmission shafts (405) are hingedly installed in a ring array on the outer edge surface of the support (401), and a movable seat (406) is hingedly installed at one end of the transmission shaft (405) extending into the guide cylinder (205), and the movable seat (406) is slidably arranged in the guide cylinder (205).

4. The multi-station spring fatigue testing tool according to claim 3, characterized in that: The clamping mechanism (3) comprises a base plate (301) and a U-shaped slide seat (302) slidably arranged on the base plate (301); an L-shaped clamp plate (303) is detachably installed on the side of the top end of the base plate (301) away from the guide cylinder (205); and a baffle plate (304) is fixedly installed on the side of the top end of the U-shaped slide seat (302) away from the L-shaped clamp plate (303); and a round rod (305) is fixedly installed on one side of the baffle plate (304) and is penetrated in the L-shaped clamp plate (303) for setting the spring body (5).

5. The multi-station spring fatigue testing tool according to claim 4, characterized in that: A pushing rod (306) is constructed at the center of one side of the U-shaped sliding seat (302), and the pushing rod (306) is fixedly connected to the movable seat (406). A supporting arm (307) is constructed at the center of the bottom end of the base plate (301), and the supporting arm (307) is welded and fixedly installed on the bottom of the guide cylinder (205).

6. The multi-station spring fatigue testing tool according to claim 5, characterized in that: Guide keys (309) are constructed on both sides of the top of the base plate (301), and guide grooves (308) for the guide keys (309) to slide are opened on both sides of the top of the U-shaped slide (302), a positioning key (310) is constructed in the center of the bottom end of the U-shaped slide (302), and a positioning groove (311) for the positioning key (310) to slide is opened in the center of the top of the base plate (301).

7. The multi-station spring fatigue testing tool according to claim 6, characterized in that: A threaded rod (312) is centrally constructed on one side of the top of the base plate (301), and the L-shaped clamping plate (303) is arranged on the threaded rod (312). A locking nut (313) that abuts against the L-shaped clamping plate (303) is threadedly mounted on the outer edge surface of the threaded rod (312).

8. The multi-station spring fatigue testing tool according to claim 1, characterized in that: The supporting frame comprises a support (6) and a bracket (7), the bracket (7) is fixedly mounted on the top of the support (6), and the reducer (101) is fixedly mounted on the top of the bracket (7).

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