Elastic material fatigue detection device

Abstract

The utility model relates to an elastic material fatigue detection device, which comprises a bottom plate and a limiting mechanism, a testing machine outputting downwards is arranged on the bottom plate, the limiting mechanism is used for supporting an elastic material and comprises a first annular piece and a second annular piece, the first annular piece is provided with a plurality of sliding grooves penetrating through the first annular piece in the radial direction, and the second annular piece is provided with a plurality of sliding grooves penetrating through the second annular piece. Sliding strips are arranged in the sliding grooves, vertical rods are arranged at the ends, located on the inner side of the first annular piece, of the sliding strips and distributed in a circular array mode, and connecting rods are hinged between the inner side of the second annular piece and the sliding strips. According to the utility model, the vertical rods distributed in the circular array are arranged, the distribution radius can be adjusted, the vertical rods surround the periphery of the spring and can adapt to different spring diameters, the spokes are arranged on the testing machine, and the spokes fall from gaps of the vertical rods during falling and are not interfered, so that the stroke range of the testing machine is not limited, and the testing efficiency is improved. And the device can penetrate into the vertical rod to pressurize the springs with various lengths.

Description

Technical Field

[0001] The utility model belongs to the field of material testing, and particularly relates to a fatigue degree detection device for elastic materials. Background Technique

[0002] Before the elastic parts (springs) leave the factory, it is necessary to sample and detect the fatigue degree of the products in the same batch. In the prior art, the common detection method is to first fix them through clamping parts, and then detect them through structures such as a testing machine and a stroke sensor.

[0003] In the prior art, the fixture for the spring is generally realized by a sleeve with a fixed caliber. For springs with different diameters, it is necessary to replace them frequently, and it does not have an automatic adjustment function. Moreover, it is also very difficult for springs with the same radius but different lengths to be applicable to the same sleeve. The upper part of the longer spring is exposed outside and there is no sleeve to support it. Therefore, the compatibility of the conventional detection device with the spring length and diameter is relatively low. Content of the Utility Model

[0004] The purpose of the utility model is to provide a fatigue degree detection device for elastic materials in order to solve the above problems.

[0005] The utility model realizes the above purpose through the following technical solutions:

[0006] A fatigue degree detection device for elastic materials includes a bottom plate, and a testing machine that outputs downward is arranged on the bottom plate. It also includes

[0007] a limiting mechanism, which is used to support the elastic material and includes a first annular part and a second annular part. The first annular part is radially provided with several through grooves penetrating the first annular part. A slide bar is arranged in the groove. The end of the slide bar located inside the first annular part is provided with a vertical rod, and they are distributed in a circular array. A connecting rod is hinged between the inner side of the second annular part and the slide bar.

[0008] As a further optimized scheme of the utility model, the testing machine is arranged on the bottom plate through an L-shaped bracket. The testing machine includes a lifting cylinder, a load sensor and a displacement sensor. In order to obtain further experimental data, a load sensor and a displacement sensor are also included in the existing device.

[0009] As a further optimized scheme of the utility model, a spoke is arranged radially at the output end of the testing machine. When the testing machine descends, the spoke enters the gap of the vertical rod. Since the distribution radius of the vertical rod can be adjusted, in order not to affect the descent of the output end of the testing machine, a spoke is arranged at the output end of the testing machine to contact the elastic material.

[0010] As a further optimization solution of the present utility model, the first annular member is arranged on the side of the bracket through a fixing rod, and the first annular member is fixed by the bracket, so that the limiting mechanism is located directly below the testing machine.

[0011] As a further optimization solution of the present utility model, the second annular member is driven to rotate by a driving member. Among them, the driving member is a motor and a gear, and teeth meshing with the gear are arranged on the outer side of the second annular member. By driving with the driving member, automatic control can be realized. By rotating the second annular member, the connecting rod drives the sliding block to slide in the sliding groove, thereby changing the distribution radius of the vertical rod.

[0012] As a further optimization solution of the present utility model, a base for restricting the bottom of the elastic material is further arranged on the surface of the bottom plate, which is used to prevent the bottom of the spring from bursting open.

[0013] The beneficial effects of the present utility model are as follows:

[0014] By arranging the vertical rods distributed in a circular array in the present utility model, and the distribution radius can be adjusted, so that the vertical rods surround the spring, which can adapt to different spring diameters. And spokes are arranged on the testing machine. When the spokes fall, they fall from the gaps between the vertical rods and will not be interfered. Therefore, the stroke range of the testing machine is not restricted, and it can penetrate into the vertical rods to pressurize springs of various lengths. Description of the Drawings

[0015] Figure 1 is the overall structural schematic diagram of the present utility model.

[0016] Figure 2 is of the present utility model Figure 1 enlarged view of the structure of part A.

[0017] Figure 3 is the top view of the limiting mechanism of the present utility model.

[0018] Figure 4 is the schematic diagram of the spoke of the present utility model.

[0019] In the figure: 1, bottom plate; 2, limiting mechanism; 21, fixing rod; 22, first annular member; 23, sliding groove; 24, vertical rod; 25, sliding block; 26, second annular member; 27, connecting rod; 28, driving member; 3, bracket; 4, testing machine; 41, spoke; 5, base. Detailed Embodiment

[0020] The following further describes the present application in detail with reference to the drawings. It is necessary to point out here that the following specific embodiments are only used to further illustrate the present application and cannot be understood as limiting the protection scope of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application according to the above application content.

[0021] Example 1

[0022] As Figures 1-4 shown, it includes a bottom plate 1, and a testing machine 4 that outputs downward is arranged on the bottom plate 1. It also includes

[0023] a limiting mechanism 2, which is used to support the elastic material, including a first annular member 22 and a second annular member 26. The first annular member 22 is radially provided with several through slots 23 that penetrate the first annular member 22. A slide bar 25 is arranged in the slot 23. A vertical rod 24 is arranged at the end of the slide bar 25 inside the first annular member 22 and is distributed in a circular array. A connecting rod 27 is hinged between the inner side of the second annular member 26 and the slide bar 25.

[0024] The testing machine 4 is arranged on the bottom plate 1 through an L-shaped bracket 3. The testing machine 4 includes a lifting cylinder, a load sensor, and a displacement sensor. In order to obtain further experimental data, a load sensor and a displacement sensor are also included in the testing machine 4 of the existing device.

[0025] Spokes 41 are arranged radially at the output end of the testing machine 4. When the testing machine 4 falls, the spokes 41 enter the gaps between the vertical rods 24. Since the distribution radius of the vertical rods 24 can be adjusted, in order not to affect the fall of the output end of the testing machine 4, spokes 41 are arranged at the output end of the testing machine 4 for contacting the elastic material.

[0026] The first annular member 22 is arranged on the side of the bracket 3 through a fixing rod 21. The first annular member 22 is fixed through the bracket 3, so that the limiting mechanism 2 is located directly below the testing machine.

[0027] The second annular member 26 is driven to rotate by a driving member 28. Among them, the driving member 28 is a motor and a gear. Teeth meshing with the gear are arranged on the outer side of the second annular member 26. By driving with the driving member 28, automatic control can be realized. By rotating the second annular member 26, the connecting rod 27 drives the slide bar 25 to slide in the slot 23, thereby changing the distribution radius of the vertical rod 24 to adapt to springs of different specifications. Since the radius of the spring will change slightly when it is compressed, the distribution radius of the vertical rod 24 should be appropriately larger than the radius of the spring according to requirements.

[0028] A base 5 for restricting the bottom of the elastic material is also arranged on the surface of the bottom plate 1, which is used to prevent the bottom of the spring from bursting open.

[0029] The specific implementation method is as follows: When in use, place the spring to be fatigue-tested into the base 5, and then drive the slide bar 25 to slide through the second annular member 26 and the connecting rod 27. The slide bar 25 drives the vertical rod 24 to move closer to the center, surrounding the spring, which can adapt to different spring diameters. And by setting the spokes 41 to apply pressure to the spring, the spokes 41 and the vertical rod 24 can not interfere with each other, enabling this device to test springs of different lengths.

[0030] The above-described embodiments only represent several implementation manners of the present utility model, and the description thereof is relatively specific and detailed. However, it should not be construed as a limitation to the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model.

Claims

1. An elastic material fatigue detection device, comprising a base plate (1) and a testing machine (4), characterized in that: The invention also includes a limiting mechanism (2) for supporting the elastic material, wherein the limiting mechanism (2) includes a first annular member (22), a plurality of slide grooves (23) radially arranged between the inner and outer walls of the first annular member (22), a slide bar (25) arranged in the slide groove (23), and a vertical rod (24) arranged at the end of the slide bar (25), wherein the vertical rods (24) are all located on the inner side of the first annular member (22) and are distributed in a circular array. The limiting mechanism (2) also includes a second annular member (26), wherein a connecting rod (27) is hingedly connected between the inner side of the second annular member (26) and the slide bar (25); The output end of the testing machine (4) is provided with spokes (41) in the radial direction, and when the testing machine (4) falls, the spokes (41) enter the gaps of the vertical rods (24); the second annular member (26) is driven to rotate by a driving member (28), wherein the driving member (28) is a motor and a gear, and the outer side of the second annular member (26) is provided with teeth meshing with the gear.

2. The elastic material fatigue detection device according to claim 1, characterized in that: The testing machine (4) is arranged on the bottom plate (1) via an L-shaped bracket (3), and the testing machine (4) comprises a lifting cylinder, a load sensor, and a displacement sensor.

3. The elastic material fatigue detection device according to claim 2, characterized in that: The first annular member (22) is arranged on the side of the bracket (3) via a fixing rod (21).

4. The elastic material fatigue detection device according to claim 1, characterized in that: The surface of the bottom plate (1) is also provided with a base (5) for limiting the bottom of the elastic material.

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