Spring pressure test fixture

Abstract

The utility model relates to spring pressure test field discloses a kind of spring pressure test fixture, including press, and the press includes lower pressing disc and upper pressing disc, and the lower pressing disc is equipped with clamping assembly;The clamping assembly includes the multiple sliding slots of lower pressing disc top being opened, rack is installed on each the sliding slot upper wall, sliding frame is equipped in the sliding slot, spring is installed in the sliding frame bottom wall, the other end of the spring is connected with fixed link, the fixed link end portion is equipped with gear block, the gear block is engaged with rack, electric telescopic link is installed on press upper end, and electric telescopic link output end is connected with upper pressing disc.In the utility model, by setting adjustable clamping assembly, when spring is placed in lower pressing disc, fixed link clamps it, can prevent spring from deviating or flying when spring pressure test, improve the stability of test, at the same time, fixed link can be adjusted according to spring size, can adapt to different specifications of spring, enhance the versatility of equipment.

Description

Technical Field

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

[0002] Spring compression testing is a test specifically designed to determine the mechanical properties of a compression spring when subjected to axial pressure. The fundamental purpose of spring compression testing is to obtain the force-displacement characteristics of the spring, that is, the relationship between the change in the length of the spring when it is compressed and the force required to be applied.

[0003] In the existing technology, when performing pressure tests on springs, the spring is usually placed directly on the lower pressure plate, and then the upper pressure plate moves downward to compress the spring. However, during this compression process, since the spring is simply placed on the surface of the lower pressure plate and lacks an effective positioning and constraint mechanism, it is very easy for it to shift laterally or even fly off the equipment, affecting the stability and safety of the test process, and even leading to inaccurate measurement results. Summary of the Invention

[0004] To overcome the above shortcomings, this utility model provides a spring pressure testing fixture, which aims to improve the problem of springs deviating or even flying out of the equipment during the spring compression test.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a spring pressure testing fixture, comprising a press, wherein the press includes a lower pressure plate and an upper pressure plate, and the lower pressure plate is provided with a clamping assembly; The clamping assembly includes multiple sliding grooves opened on the top of the pressure plate. A rack is installed on the upper wall of each sliding groove. A sliding frame is provided in the sliding groove. A spring is installed on the bottom wall of the sliding frame. The other end of the spring is connected to a fixing rod. A toothed block is provided at the end of the fixing rod. The toothed block meshes with the rack.

[0006] According to the above scheme: by setting an adjustable clamping component, when the spring is placed on the lower pressure plate, the fixing rod can effectively clamp it, which can prevent the spring from shifting or flying away during the spring pressure test, thus improving the stability and safety of the test. At the same time, since the fixing rod can be adjusted according to the spring size, the equipment can adapt to springs of different specifications, enhancing the versatility of the equipment.

[0007] Preferably, an electric telescopic rod is installed at the upper end of the press, and the output end of the electric telescopic rod is connected to the upper pressure plate.

[0008] Preferably, the upper pressure plate has multiple square holes, and one end of the fixing rod passes through the square holes.

[0009] Preferably, a control panel is installed on the upper end of the press.

[0010] Preferably, the width of the end of the fixing rod is smaller than the width of the sliding frame port, and the end of the fixing rod slides within the sliding frame.

[0011] Preferably, both the bottom wall of the slide groove and the bottom of the slide frame are smooth, and the slide frame slides within the slide groove.

[0012] Preferably, one side wall of the fixing rod is arc-shaped, and the arc of the side wall of the fixing rod is adapted to the arc of the surface of the test element.

[0013] Preferably, the square hole and the sliding groove are perpendicular in the vertical direction, and the fixing rod slides within the square hole.

[0014] This utility model has the following beneficial effects: 1. In this utility model, by setting an adjustable clamping component, when the spring is placed on the lower pressure plate, the fixing rod is used to effectively clamp it, which can prevent the spring from shifting or flying away during the spring pressure test, thereby improving the stability and safety of the test. At the same time, since the fixing rod can be adjusted according to the size of the spring, the equipment can adapt to springs of different specifications, thus enhancing the versatility of the equipment.

[0015] In this invention, by using a square hole to cooperate with a fixing rod, the upper pressure plate can be effectively prevented from contacting the clamping assembly during the process of the upper pressure plate pressing down on the spring, thereby preventing measurement errors caused by interference. This design ensures the smoothness and accuracy of the pressure testing process while achieving stable fixation of the spring.

[0016] In this invention, the side wall of the fixing rod 405 adopts an arc-shaped design, and its curvature matches the curvature of the outer surface of the component to be tested. This fitting structure can increase the contact area during clamping and evenly distribute the clamping force, thereby achieving a more stable and reliable fastening of the component. This design not only effectively prevents the component from sliding or shifting during the test, but also avoids surface damage to the component that may be caused by stress concentration, further ensuring the accuracy of the test data. Attached Figure Description

[0017] Figure 1 This is an overall structural diagram of a spring pressure testing fixture proposed in this utility model; Figure 2 This is a structural diagram of the clamping assembly of a spring pressure testing fixture proposed in this utility model; Figure 3 This utility model proposes a spring pressure testing fixture. Figure 2 Enlarged view of point A in the middle; Figure 4 This is a structural diagram of the inner groove of a spring pressure testing fixture proposed in this utility model.

[0018] Legend: 1. Press; 2. Lower pressure plate; 3. Upper pressure plate; 4. Clamping assembly; 401. Slide groove; 402. Rack; 403. Slide frame; 404. Spring; 405. Fixed rod; 406. Tooth block; 5. Electric telescopic rod; 6. Square hole; 7. Control panel. Detailed Implementation

[0019] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] Reference Figure 1 and Figure 3 as well as Figure 4 An embodiment of this utility model is provided: a spring pressure testing fixture, including a press 1, the press 1 including a lower pressure plate 2 and an upper pressure plate 3, and a clamping component 4 provided in the lower pressure plate 2; The clamping assembly 4 includes multiple slide grooves 401 opened on the top of the lower pressure plate 2. A rack 402 is installed on the upper wall of each slide groove 401. A slide frame 403 is provided in the slide groove 401. A spring 404 is installed on the bottom wall of the slide frame 403. A fixing rod 405 is connected to the other end of the spring 404. A toothed block 406 is provided at the end of the fixing rod 405. The toothed block 406 meshes with the rack 402.

[0021] Specifically, by setting an adjustable clamping component 4, when the component to be tested is placed on the lower pressure plate 2, the fixing rod 405 is used to effectively clamp it, which can prevent the component from shifting or flying away during the pressure test, thus improving the stability and safety of the test. At the same time, since the fixing rod 405 can be adjusted according to the size of the component, the equipment can adapt to components of different specifications, thus enhancing the versatility of the equipment.

[0022] Reference Figure 1 and Figure 2 The upper end of the press 1 is equipped with an electric telescopic rod 5, the output end of which is connected to the upper pressure plate 3; the upper pressure plate 3 has multiple square holes 6, one end of the fixing rod 405 passes through the square hole 6, and the upper end of the press 1 is equipped with a control panel 7.

[0023] Specifically, after the component to be tested is fixed, the electric telescopic rod 5 is activated, driving the upper pressure plate 3 to move downward and apply pressure to the component. During the downward pressing process, the upper pressure plate 3 effectively avoids the clamping component 4 through the ingenious design of its upper hole 6, completely avoiding interference between mechanisms. This design not only ensures the smooth operation of the testing process, but also ensures the accuracy and reliability of the test data. Through the set control panel 7, the test data can be observed and recorded in real time.

[0024] Reference Figure 3 and Figure 4 The width of the end of the fixed rod 405 is smaller than the width of the port of the sliding frame 403, and the end of the fixed rod 405 slides within the sliding frame 403; the bottom wall of the slide groove 401 and the bottom of the sliding frame 403 are both smooth, and the sliding frame 403 slides within the slide groove 401.

[0025] Specifically, since the bottom wall of the slide 401 and the bottom of the slide frame 403 are both treated with smooth surfaces, the frictional resistance can be reduced during relative sliding. This design not only effectively reduces the wear of moving parts, but also improves the smoothness and stability of the system's operation, thereby significantly extending the service life of related parts and reducing the long-term maintenance cost of the equipment.

[0026] Reference Figure 1 and Figure 4 The side wall of the fixing rod 405 is arc-shaped, and the arc of the side wall of the fixing rod 405 is adapted to the arc of the surface of the test element; the square hole 6 is perpendicular to the slide groove 401 in the vertical direction, and the fixing rod 405 slides in the square hole 6.

[0027] Specifically, the sidewall of the fixing rod 405 adopts an arc-shaped design, the curvature of which matches the curvature of the outer surface of the component to be tested. This fitting structure can increase the contact area during clamping and evenly distribute the clamping force, thereby achieving a more stable and reliable fastening of the component. This design not only effectively prevents the component from sliding or shifting during the test, but also avoids surface damage to the component that may be caused by stress concentration, further ensuring the accuracy of the test data.

[0028] Working principle: During operation, the component to be tested is placed in the center of the lower pressure plate 2, and then the fixing rod 405 is adjusted to clamp and fix it. The initial state of the clamping assembly 4 is as follows. Figure 3As shown, when adjusting the fixing rod 405, pressing the fixing rod 405 downwards causes the toothed block 406 to disengage from the rack 402. At this time, the spring 404 deforms, and the end of the fixing rod 405 enters the slide frame 403. Then, the fixing rod 405 is pulled to move horizontally. While the fixing rod 405 is moving, the slide frame 403 is also moved. When the fixing rod 405 moves to the appropriate position, it is released. At this time, the spring 404 rebounds, pushing the end of the fixing rod 405 out of the slide frame 403, so that the toothed block 406 meshes with the rack 402. Thus, the fixing rod 405 is fixed in the horizontal direction. Due to the action of the spring 404, the fixing rod 405 is fixed in the vertical direction, thereby fixing the component to be tested.

[0029] After the component to be tested is fixed, the electric telescopic rod 5 is activated, driving the upper pressure plate 3 to move downward and apply pressure to the component. During the downward pressing process, the upper pressure plate 3 effectively avoids the clamping component 4 through the ingenious design of its upper hole 6, completely avoiding interference between mechanisms. This design not only ensures the smooth operation of the testing process, but also ensures the accuracy and reliability of the test data.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A spring pressure testing fixture, comprising a press (1), characterized in that: The press (1) includes a lower pressure plate (2) and an upper pressure plate (3), and the lower pressure plate (2) is provided with a clamping assembly (4). The clamping assembly (4) includes multiple slide grooves (401) opened on the top of the pressure plate (2). A rack (402) is installed on the upper wall of each slide groove (401). A slide frame (403) is provided in the slide groove (401). A spring (404) is installed on the bottom wall of the slide frame (403). A fixing rod (405) is connected to the other end of the spring (404). A toothed block (406) is provided at the end of the fixing rod (405). The toothed block (406) meshes with the rack (402).

2. The spring pressure testing fixture according to claim 1, characterized in that: The upper end of the press (1) is equipped with an electric telescopic rod (5), and the output end of the electric telescopic rod (5) is connected to the upper pressure plate (3).

3. The spring pressure testing fixture according to claim 1, characterized in that: The upper pressure plate (3) has multiple square holes (6), and one end of the fixing rod (405) passes through the square holes (6).

4. A spring pressure testing fixture according to claim 2, characterized in that: The press (1) is equipped with a control panel (7) on its upper end.

5. A spring pressure testing fixture according to claim 1, characterized in that: The width of the end of the fixed rod (405) is smaller than the width of the port of the sliding frame (403), and the end of the fixed rod (405) slides within the sliding frame (403).

6. A spring pressure testing fixture according to claim 1, characterized in that: The bottom wall of the slide groove (401) and the bottom of the slide frame (403) are both smooth, and the slide frame (403) slides within the slide groove (401).

7. A spring pressure testing fixture according to claim 5, characterized in that: One side wall of the fixing rod (405) is arc-shaped, and the arc of the side wall of the fixing rod (405) is adapted to the arc of the surface of the test element.

8. A spring pressure testing fixture according to claim 3, characterized in that: The square hole (6) is perpendicular to the slide groove (401) in the vertical direction, and the fixing rod (405) slides within the square hole (6).

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