A bounce force testing instrument

Abstract

The present application relates to a kind of bounce test instrument, including support rod, bottom plate and bounce test board, the bounce test board is slidably connected with support rod, the bottom plate is fixedly connected with support rod, and the top of the bottom plate is placed with hydraulic telescopic rod.The present application is combined with the structure of support rod, bottom plate and bounce test board, so that the bounce test board can be conveniently adjusted in height, to adapt to the test requirements of different bounce level.This adjustable design not only improves the flexibility of test, but also ensures the accuracy and fairness of test, the design of limiting slide and limiting slide groove outside bounce test board ensures the stable sliding of bounce test board on support rod, prevents shaking or deviation during test.At the same time, the setting of fixing bolt makes the test board can be firmly fixed on support rod after adjusting to predetermined height, guarantees the stability and safety of test.

Description

Technical Field

[0001] This invention relates to the field of elasticity testing equipment technology, specifically to an adjustable bounce force testing instrument. Background Technology

[0002] With the continuous development of physical education and sports training, jumping ability testing, as one of the important indicators for assessing students' athletic ability, is receiving increasing attention. Traditional jumping ability testing methods often use trampolines of fixed height, which cannot adapt to the different jumping ability levels of students, resulting in inaccurate test results and making it difficult to effectively guide students' training.

[0003] To overcome this deficiency, some height-adjustable jump testing devices have emerged in recent years. These devices, by adjusting the height of the trampoline, make the test more suitable for students' actual abilities, improving the accuracy and effectiveness of the test. However, existing adjustable jump testing devices still have some issues regarding adjustment methods and stability.

[0004] Some devices use mechanical structures for height adjustment, which are complex to operate and lack precision, making them unsuitable for accurate adjustments. Other devices use electric or pneumatic methods for adjustment, but these are structurally complex, costly, and their stability needs further improvement. Furthermore, many devices use simple connection methods, such as pins or clips, to secure the trampoline, which may pose safety hazards when subjected to the force of student jumps.

[0005] Therefore, it is necessary to develop a new type of adjustable trampoline test instrument, which should be easy to operate, precisely adjustable, stable, and safe. By using a hydraulic telescopic rod for height adjustment, precise and stable extension and retraction can be achieved to meet the testing needs of different students. At the same time, bolted fixing ensures the stability and safety of the trampoline during testing. Summary of the Invention

[0006] To address the problems of the prior art, this invention provides a jumping force testing instrument.

[0007] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: a jumping force testing instrument, including a support rod, a base plate and a jumping test plate, wherein the jumping test plate is slidably connected to the support rod, the base plate is fixedly connected to the support rod, and a hydraulic telescopic rod is placed at the top of the base plate, wherein the hydraulic telescopic rod is used to extend and retract its output end to support the jumping test plate to adjust its height.

[0008] The four outer corners of the bounce test board are fixedly connected to limiting slides. The inner wall of the limiting slide is provided with a limiting slide groove. The limiting slide groove is slidably connected to the support rod. The outer side of the limiting slide is bolted with a fixing bolt. The fixing bolt is threadedly rotated with the limiting slide. One end of the fixing bolt presses against the outer wall of the support rod to fix the position between the bounce test board and the support rod. The inner side of the bounce test board is provided with an elastic pad.

[0009] Preferably, the number of support rods is set to four, and the top of each support rod is engaged with a limiting plug, which is used to limit the sliding position of the limiting slide to prevent it from slipping upward. The bottom of each support rod is fixedly connected with a support foot, which is used to increase the ground contact area and enhance stability.

[0010] Preferably, a foot pedal is provided on one side of the bottom end of the hydraulic telescopic rod, and the output end of the hydraulic telescopic rod is extended by stepping on it. The bottom end of the hydraulic telescopic rod is fixedly connected to a base.

[0011] Preferably, a pressure relief bolt is provided on one side of the hydraulic telescopic rod for internal liquid pressure relief and to control the descent of the output end of the hydraulic telescopic rod. A support plate is fixedly connected to the output end of the hydraulic telescopic rod.

[0012] The beneficial effects of this invention are as follows:

[0013] 1. This invention, through the design of a combined structure of a support rod, a base plate, and a bounce test board, allows for convenient height adjustment of the bounce test board, thus adapting to testing requirements of different bounce levels. This adjustable design not only improves testing flexibility but also ensures accuracy and impartiality. The limiting slide and limiting groove design on the outer side of the bounce test board ensures stable sliding of the test board on the support rod, preventing shaking or displacement during testing. Simultaneously, the fixing bolts ensure that the test board is firmly fixed to the support rod after being adjusted to the predetermined height, guaranteeing the stability and safety of the test.

[0014] 2. The use of a hydraulic telescopic rod provides a convenient way to raise and lower the test plate. By stepping on the pedal, the extension or retraction of the hydraulic telescopic rod's output end can be easily controlled, thus achieving rapid adjustment of the test plate's height. This design not only improves operational efficiency but also reduces the user's workload. The limiting plug design at the top of the support rod effectively prevents the test plate from slipping during upward sliding, enhancing testing safety. Simultaneously, the support feet at the bottom of the support rod increase the ground contact area, improving the stability of the entire testing instrument and ensuring the smooth progress of the testing process. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 This is a schematic diagram of the bounce test board of the present invention.

[0017] Figure 3 This is a schematic diagram of the hydraulic telescopic rod structure of the present invention.

[0018] Figures 1-3 In the middle: 1. Support rod; 2. Base plate; 3. Bounce test plate; 4. Hydraulic telescopic rod; 11. Support foot; 12. Limiting plug; 31. Elastic pad; 32. Limiting slide; 33. Limiting slide groove; 34. Fixing bolt; 41. Base; 42. Foot pedal; 43. Pressure relief bolt; 44. Support plate. Detailed Implementation

[0019] like Figures 1-3 The jumping force testing instrument shown includes a support rod 1, a base plate 2 and a jumping test plate 3. The jumping test plate 3 is slidably connected to the support rod 1, and the base plate 2 is fixedly connected to the support rod 1. A hydraulic telescopic rod 4 is placed at the top of the base plate 2. The hydraulic telescopic rod 4 is used to extend and retract its output end to support the jumping test plate 3 to adjust its height.

[0020] The four outer corners of the bounce test plate 3 are fixedly connected to limiting slides 32. The inner wall of the limiting slide 32 is provided with limiting slide grooves 33. The limiting slide grooves 33 are slidably connected to the support rod 1. The outer side of the limiting slide 32 is bolted with fixing bolts 34. The fixing bolts 34 are connected to the limiting slide 32 by threaded rotation. One end of the fixing bolts 34 presses against the outer wall of the support rod 1 to fix the position between the bounce test plate 3 and the support rod 1. The inner side of the bounce test plate 3 is provided with elastic pads 31.

[0021] When using the device, students take a jumping ability test. For students with different jumping abilities, the height of the jumping test board 3 needs to be adjusted. To raise the jumping test board 3, loosen the fixing bolt 34 by turning the foot pedal 42. This causes the output end and the top support plate 44 to extend upward, pushing the jumping test board 3 upward. When it reaches the predetermined height, stop turning the foot pedal 42 and then turn the fixing bolt 34 to fix the jumping test board 3. Similarly, to lower the jumping test board 3, loosen the fixing bolt 34, then loosen the pressure relief bolt 43 to control the jumping test board 3 to slide downward. When it reaches the predetermined position, tighten the pressure relief bolt 43 and then tighten the fixing bolt 34 to fix the height of the jumping test board 3.

[0022] The number of support rods 1 is set to four. The top of each support rod 1 is engaged with a limit plug 12. The limit plug 12 is used to limit the sliding position of the limit slide 32 to prevent it from slipping upward. The bottom of each support rod 1 is fixedly connected with a support foot 11. The support foot 11 is used to increase the ground contact area and enhance stability. A foot pedal 42 is provided on one side of the bottom of the hydraulic telescopic rod 4. The output end of the hydraulic telescopic rod 4 is extended by stepping on it. The bottom of the hydraulic telescopic rod 4 is fixedly connected with a base 41. A pressure relief bolt 43 is provided on one side of the hydraulic telescopic rod 4 for internal liquid pressure relief and to control the descent of the output end of the hydraulic telescopic rod 4. The output end of the hydraulic telescopic rod 4 is fixedly connected with a support plate 44.

[0023] In summary, the present invention operates on the following principle: During use, students conduct jumping ability tests using this device. For students with different jumping abilities, the height of the jumping test board 3 needs to be adjusted. When teachers or other staff need to raise the jumping test board 3, they loosen the fixing bolt 34 by rotating the foot pedal 42, which in turn extends the output end and the top support plate 44 upwards, pushing the jumping test board 3 upwards. When it reaches the predetermined height, the foot pedal 42 is stopped, and the fixing bolt 34 is rotated to fix the jumping test board 3. Similarly, when the jumping test board 3 needs to be lowered, the fixing bolt 34 is loosened, and then the pressure relief bolt 43 is rotated to loosen it, controlling the jumping test board 3 to slide downwards. When it reaches the predetermined position, the pressure relief bolt 43 is tightened, and then the fixing bolt 34 is rotated to tighten, fixing the height of the jumping test board 3. This completes the overall workflow of the device.

Claims

1. A jumping force testing instrument, comprising a support rod (1), a base plate (2), and a jumping test plate (3), characterized in that: The bounce test board (3) is slidably connected to the support rod (1), the base plate (2) is fixedly connected to the support rod (1), and a hydraulic telescopic rod (4) is placed at the top of the base plate (2). The hydraulic telescopic rod (4) is used to extend and retract the output end to support the bounce test board (3) to adjust its height. The four outer corners of the bounce test plate (3) are fixedly connected to limiting slides (32). The inner wall of the limiting slide (32) is provided with limiting slide grooves (33). The limiting slide grooves (33) are slidably connected to the support rod (1). The outer side of the limiting slide (32) is bolted with fixing bolts (34). The fixing bolts (34) are connected to the limiting slide (32) by threaded rotation. One end of the fixing bolts (34) presses against the outer wall of the support rod (1) to fix the position between the bounce test plate (3) and the support rod (1). The inner side of the bounce test plate (3) is provided with elastic pads (31). The number of the support rods (1) is set to four. The top of each support rod (1) is connected to a limiting plug (12). The limiting plug (12) is used to limit the sliding position of the limiting slide (32) to prevent it from slipping upward. The bottom of each support rod (1) is fixedly connected to a support foot (11). The support foot (11) is used to increase the ground contact area and enhance stability.

2. The jumping ability testing instrument according to claim 1, characterized in that: The bottom end of the hydraulic telescopic rod (4) is provided with a foot pedal (42), which controls the extension of the output end of the hydraulic telescopic rod (4) by stepping on it. The bottom end of the hydraulic telescopic rod (4) is fixedly connected to a base (41).

3. The jumping ability testing instrument according to claim 1, characterized in that: The hydraulic telescopic rod (4) is provided with a pressure relief bolt (43) on one side for internal liquid pressure relief and to control the output end of the hydraulic telescopic rod (4) to descend. The output end of the hydraulic telescopic rod (4) is fixedly connected to a support plate (44).

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