Wave spring service life testing machine

Abstract

The utility model discloses a wave spring service life testing machine comprising a base plate and a pressing plate, the base plate is provided with a positioning mechanism, the positioning mechanism positions the lower end of a wave spring, the upper end face of the base plate is provided with a vertical rod, the upper end of the vertical rod is provided with a top plate, a lifting plate is arranged below the top plate, and the pressing plate is arranged on the base plate. A lifting plate is arranged on the top plate, a height adjusting mechanism is arranged on the upper end face of the top plate and adjusts the height of the lifting plate, a pressing plate is arranged below the lifting plate, and an up-and-down reciprocating motion mechanism is arranged on the upper end face of the lifting plate and drives the pressing plate to do up-and-down reciprocating motion. The spring fixing device has the advantages of being low in failure rate, long in service life, good in spring lower end fixing effect and suitable for springs of different specifications.

Description

Technical Field

[0001] The utility model relates to the technical field of testing machines, in particular to a wave spring service life testing machine. Background Art

[0002] Wave spring is an elastic element, which is made of elastic material, usually steel or other alloy materials. Wave spring is characterized by good elasticity, strong fatigue resistance, simple structure, light weight, etc., so it is widely used in machinery manufacturing, automobiles, electronic equipment, household appliances and other fields.

[0003] After the production of wave springs is completed, a service life tester is needed to test their service life. Existing spring life testers, such as the Chinese utility model with application number 201720174476.6, use a cylinder to drive the telescopic rod to extend and retract, thereby driving the pressing block to move up and down to detect the spring to be tested. During the detection process, the cylinder and the telescopic rod need to move back and forth frequently, resulting in a short service life and a high failure rate for the cylinder and the telescopic rod. At the same time, the lower end of the spring is fixed by clamping, and the clamping force is not easy to control. A small clamping force will result in a poor fixing effect, and a large clamping force will easily damage the spring. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a wave spring service life testing machine which has low failure rate, long service life, good fixing effect on the lower end of the spring and is suitable for springs of different specifications in view of the above problems.

[0005] In order to solve the above technical problems, the technical solution provided by the utility model is: a wave spring service life testing machine, including a base plate and a pressing plate, the base plate is provided with a positioning mechanism, the positioning mechanism positions the lower end of the wave spring, the upper end surface of the base plate is provided with a vertical rod, the upper end of the vertical rod is provided with a top plate, a lifting plate is provided below the top plate, the upper end surface of the top plate is provided with a height adjustment mechanism, the height adjustment mechanism adjusts the height of the lifting plate, a pressing plate is provided below the lifting plate, the upper end surface of the lifting plate is provided with an up and down reciprocating motion mechanism, the up and down reciprocating motion mechanism drives the pressing plate to reciprocate up and down.

[0006] Furthermore, the up and down reciprocating motion mechanism includes a motor, a cam and a spring, a movable rod is slidably connected to the center of the lifting plate, a transmission plate is provided at the upper end of the movable rod, a spring is provided between the transmission plate and the lifting plate, the lower end of the movable rod is connected to the pressing plate, a motor is provided on one side of the transmission plate on the upper surface of the lifting plate, a cam is provided on the output end of the motor, and the cam is in contact with the transmission plate.

[0007] Furthermore, the spring sleeve is arranged on the outside of the movable rod.

[0008] Furthermore, a support plate is provided on a side of the upper end surface of the lifting plate opposite to the motor, and an output end of the motor is rotatably connected to the support plate.

[0009] Furthermore, the positioning mechanism includes a positioning groove, a positioning plate and a two-way cylinder. The upper end surface of the base plate is provided with a positioning groove, and a positioning plate is slidably connected to the side surface opposite to the positioning groove. The lower end surface of the positioning plate is provided with a connecting plate, and the connecting plate is slidably connected to the base plate and exposed from the lower end surface of the base plate. The lower end surface of the base plate is provided with a two-way cylinder, and the piston rod of the two-way cylinder is connected to the connecting plate.

[0010] Furthermore, the height adjustment mechanism includes a cylinder and a transmission rod. The upper surface of the top plate is provided with a cylinder, and the piston rod of the cylinder is connected to the lifting plate through the transmission rod.

[0011] Furthermore, the lifting plate is slidably connected to the vertical pole.

[0012] The advantages of the utility model compared with the prior art are:

[0013] 1. The motor drives the cam to rotate. Under the joint action of the cam and the spring, the transmission plate reciprocates up and down, and the pressing plate is driven to reciprocate up and down by the movable rod, thereby realizing repeated compression of the wave spring to be tested. The motor only needs to rotate continuously to achieve this. Therefore, the failure rate of this test machine is lower and the service life is longer;

[0014] 2. The wave spring to be tested is placed in the positioning groove, the piston rod of the bidirectional cylinder is retracted, and the positioning piece is driven to move relative to the connecting piece. The positioning piece is inserted into the gap at the lower end of the wave spring to fix the position of the lower end of the spring. The positioning effect is good and will not cause damage to the wave spring.

[0015] 3. The piston rod of the cylinder is extended and retracted to adjust the height of the lifting plate, thereby adjusting the initial height of the pressing plate, thereby adapting to the detection of wave springs of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2 This is the main view of the utility model

[0018] Figure numerals: 1, bottom plate, 2, pressing plate, 3, vertical rod, 4, top plate, 5, lifting plate, 6, motor, 7, cam, 8, spring, 9, movable rod, 10, transmission plate, 11, support plate, 12, positioning groove, 13, positioning plate, 14, two-way cylinder, 15, connecting plate, 16, cylinder, 17, transmission rod. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present utility model are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present utility model, not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present utility model.

[0020] It should be noted that all directional indications such as up, down, left, right, front, back... in the embodiments of the utility model are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0021] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0022] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0023] The utility model will now be further described in conjunction with the accompanying drawings.

[0024] Combined with Figure 1-2 A positioning mechanism is provided on the base plate 1, and the positioning mechanism positions the lower end of the wave spring. The positioning mechanism includes a positioning groove 12, a positioning piece 13 and a two-way cylinder 14. The upper end surface of the base plate 1 is provided with a positioning groove 12, and the side opposite to the positioning groove 12 is slidably connected with a positioning piece 13. The lower end surface of the positioning piece 13 is provided with a connecting piece 15, and the connecting piece 15 is slidably connected to the base plate 1 and exposed from the lower end surface of the base plate 1. The lower end surface of the base plate 1 is provided with a two-way cylinder 14, and the piston rod of the two-way cylinder 14 is connected to the connecting piece 15.

[0025] When in use, the wave spring to be tested is placed in the positioning groove 12, the piston rod of the two-way cylinder 14 is retracted, and the positioning plate 13 is driven to move relative to it through the connecting plate 15. The positioning plate 13 is inserted into the gap at the lower end of the wave spring to fix the position of the lower end of the spring. The shape characteristics of the wave spring are used for positioning, and the positioning effect is good without causing damage to the wave spring.

[0026] Combined with Figure 1-2 The upper end surface of the bottom plate 1 is provided with a vertical rod 3, the upper end of the vertical rod 3 is provided with a top plate 4, a lifting plate 5 is provided below the top plate 4, the upper end surface of the top plate 4 is provided with a height adjustment mechanism, the height adjustment mechanism adjusts the height of the lifting plate 5, the height adjustment mechanism includes a cylinder 16 and a transmission rod 17, the upper end surface of the top plate 4 is provided with a cylinder 16, the piston rod of the cylinder 16 is connected to the lifting plate 5 through the transmission rod 17, and the lifting plate 5 is slidably connected to the vertical rod 3.

[0027] According to the specifications of the wave spring to be tested, the piston rod of the cylinder 16 is extended and retracted, and the lifting plate 5 is driven to move through the transmission rod 17. The lifting plate 5 slides on the vertical rod 3, and the vertical rod 3 guides the movement direction of the lifting plate 5. The lifting and lowering of the lifting plate 5 adjusts the initial height of the pressing plate 2, thereby adapting to the testing of wave springs of different specifications.

[0028] Combined with Figure 1-2 The upper end surface of the lifting plate 5 is provided with an up and down reciprocating mechanism, and the up and down reciprocating mechanism drives the pressing plate 2 to reciprocate up and down. The up and down reciprocating mechanism includes a motor 6, a cam 7 and a spring 8. The lifting plate 5 is slidably connected with a movable rod 9 at the center, and a transmission plate 10 is provided at the upper end of the movable rod 9. A spring 8 is provided between the transmission plate 10 and the lifting plate 5. The lower end of the movable rod 9 is connected to the pressing plate 2. A motor 6 is provided on one side of the transmission plate 10 on the upper end surface of the lifting plate 5. A cam 7 is provided on the output end of the motor 6, and the cam 7 is in contact with the transmission plate 10.

[0029] During testing, the motor 6 drives the cam to rotate. Under the joint action of the cam 7 and the spring 8, the transmission plate 10 reciprocates up and down, and the pressing plate 2 is driven to reciprocate up and down through the movable rod 9, thereby realizing repeated compression of the wave spring to be tested. The motor only needs to rotate continuously to achieve this, which makes the failure rate of the testing machine lower and the service life longer.

[0030] The utility model and its implementation methods are described, and such description is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A wave spring service life testing machine, comprising a base plate (1) and a pressing plate (2), characterized in that: The bottom plate (1) is provided with a positioning mechanism, and the positioning mechanism positions the lower end of the wave spring; the upper end surface of the bottom plate (1) is provided with a vertical rod (3), and the upper end of the vertical rod (3) is provided with a top plate (4); a lifting plate (5) is provided below the top plate (4), and a height adjustment mechanism is provided on the upper end surface of the top plate (4), and the height adjustment mechanism adjusts the height of the lifting plate (5); a pressing plate (2) is provided below the lifting plate (5), and an up-and-down reciprocating motion mechanism is provided on the upper end surface of the lifting plate (5), and the up-and-down reciprocating motion mechanism drives the pressing plate (2) to reciprocate up and down.

2. A wave spring service life testing machine according to claim 1, characterized in that: The up-and-down reciprocating mechanism comprises a motor (6), a cam (7) and a spring (8); the lifting plate (5) is slidably connected to a movable rod (9) at the center; a transmission plate (10) is provided at the upper end of the movable rod (9); a spring (8) is provided between the transmission plate (10) and the lifting plate (5); the lower end of the movable rod (9) is connected to the pressing plate (2); a motor (6) is provided on one side of the transmission plate (10) on the upper end surface of the lifting plate (5); a cam (7) is provided on the output end of the motor (6); and the cam (7) is in contact with the transmission plate (10).

3. A wave spring service life testing machine according to claim 2, characterized in that: The spring (8) is sleeved on the outside of the movable rod (9).

4. The wave spring service life testing machine according to claim 2, characterized in that: A support plate (11) is provided on the side of the upper end surface of the lifting plate (5) opposite to the motor (6), and the output end of the motor (6) is rotatably connected to the support plate (11).

5. The wave spring service life testing machine according to claim 1, characterized in that: The positioning mechanism comprises a positioning groove (12), a positioning piece (13) and a bidirectional cylinder (14); the upper end surface of the base plate (1) is provided with a positioning groove (12); the side surface opposite to the positioning groove (12) is slidably connected with a positioning piece (13); the lower end surface of the positioning piece (13) is provided with a connecting piece (15); the connecting piece (15) is slidably connected with the base plate (1) and exposed from the lower end surface of the base plate (1); the lower end surface of the base plate (1) is provided with a bidirectional cylinder (14); and the piston rod of the bidirectional cylinder (14) is connected to the connecting piece (15).

6. The wave spring service life testing machine according to claim 1, characterized in that: The height adjustment mechanism comprises a cylinder (16) and a transmission rod (17); the upper end surface of the top plate (4) is provided with a cylinder (16); and the piston rod of the cylinder (16) is connected to the lifting plate (5) via the transmission rod (17).

7. The wave spring service life testing machine according to claim 1, characterized in that: The lifting plate (5) is slidably connected to the vertical rod (3).

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