A pneumatic spring fatigue life testing machine

Abstract

This application relates to the field of pneumatic spring testing and discloses a pneumatic spring fatigue life testing machine, including a testing machine body and a fixed base. A testing frame is fixedly installed on the top of the testing machine body, and a test material is movably connected to the surface of the testing machine body. Two connecting rods are fixedly installed at one end of the fixed base. The two connecting rods are symmetrically distributed about the fixed base, and a sliding frame is slidably connected to the surface of the connecting rods. A connecting frame is slidably installed at the end of the sliding frame that is close to the fixed base. The bottom end of the fixed base is fixedly connected to the top of the testing machine body. This application installs the fixed base on the top of the testing machine body, and one end of the fixed base is connected to the sliding frame via the connecting rods. Both the fixed base and the sliding frame are equipped with connecting frames, so that the distance between the two connecting frames can be controlled after the sliding frame slides on the surface of the connecting rods, thereby facilitating the fixing of test materials of different sizes.

Description

Technical Field

[0001] This application relates to the field of pneumatic spring testing, and in particular to a pneumatic spring fatigue life testing machine. Background Technology

[0002] A pneumatic spring (commonly known as a gas spring) is an industrial component driven by a gas pressure difference. It is mainly used for support, cushioning, height adjustment, and angle adjustment. Its core structure includes a pressure cylinder, piston rod, piston, sealed guide sleeve, and an inert gas or oil-gas mixture filling material. The gas spring is filled with inert gas or an oil-gas mixture at several to tens of atmospheres through a sealed pressure cylinder. The pressure difference on both sides of the piston drives the piston rod. Pneumatic springs are often tested using a fatigue life testing machine. A pneumatic spring fatigue life testing machine is a specialized device used to test the fatigue life and durability of gas springs and other elastic components (such as air springs and buffer springs) under alternating loads. In a conventional fatigue life testing machine, after the machine body is installed stably, a test frame is installed on top of the machine body. The test material is placed on top of the machine body, and the test frame compresses the test material. The test data is recorded and displayed by the machine body.

[0003] Regarding the aforementioned technologies, the inventors believe that when conventional pneumatic springs are used for fatigue life testing, the varying sizes of the pneumatic springs make it difficult for conventional testing machines to properly fit the test material, leading to shaking of the test material after installation and thus affecting the testing results of fatigue life testing.

[0004] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application, and therefore may include prior art that is not known to those skilled in the art. Utility Model Content

[0005] To address the problem of difficulty in fixing different test materials during the use of pneumatic spring fatigue life testing machines, this application provides a pneumatic spring fatigue life testing machine.

[0006] The pneumatic spring fatigue life testing machine provided in this application adopts the following technical solution:

[0007] A pneumatic spring fatigue life testing machine includes a testing machine body and a fixed base. A testing frame is fixedly installed on the top of the testing machine body, and a test material is movably connected to the surface of the testing machine body. Two connecting rods are fixedly installed at one end of the fixed base. The two connecting rods are symmetrically distributed about the fixed base, and a sliding frame is slidably connected to the surface of the connecting rods. A connecting frame is slidably installed at the end of the sliding frame that is close to the fixed base. The bottom end of the fixed base is fixedly connected to the top of the testing machine body, and the bottom end of the sliding frame is slidably installed to the top of the testing machine body. The dimensions of the inner wall of the sliding frame are adapted to the dimensions of the surface of the connecting rods.

[0008] Preferably, the surfaces of the fixed base and the sliding frame are rotatably connected with adjusting bolts, and the surface of the adjusting bolts is threaded with a fixed frame. The inner wall of the fixed frame is slidably connected to the surface of the connecting frame, and the dimensions of the inner wall of the fixed frame are compatible with the dimensions of the surface of the connecting frame.

[0009] Preferably, anti-slip plates are fixedly installed at the adjacent ends of the two connecting frames. The anti-slip plates are rubber sheets, and the dimensions of the anti-slip plates are adapted to the dimensions of one end of the connecting frame.

[0010] Preferably, the surface of the connecting rod is provided with a threaded groove, the inner wall of the threaded groove is threadedly connected to the inner wall of the sliding frame, and a rotating handle is fixedly installed at one end of the connecting rod.

[0011] Preferably, one end of the connecting rod is rotatably connected to a mounting bracket, and the inner wall of the mounting bracket is threaded with a plurality of fixing bolts. The plurality of fixing bolts are evenly distributed on the surface of the mounting bracket, and one end of the fixing bolts is engaged with the surface of the testing machine body.

[0012] Preferably, a limiting frame is rotatably connected to the surface of the sliding frame, and a fixing spring is fixedly installed between the limiting frame and the sliding frame.

[0013] Preferably, the top of the connecting rod is provided with a plurality of slots, which are evenly distributed on the surface of the connecting rod, and the inner wall of the slots is engaged with the bottom end of the limiting frame.

[0014] In summary, this application includes the following beneficial technical effects:

[0015] 1. By installing a fixed base on the top of the testing machine body, one end of the fixed base is connected to a sliding frame via a connecting rod. Both the fixed base and the sliding frame have connecting frames installed at one end, allowing the distance between the two connecting frames to be controlled by sliding the sliding frame on the surface of the connecting rod. This facilitates the fixing of test materials of different sizes. Adjusting bolts are rotatably connected to the surfaces of both the fixed base and the sliding frame. The fixed frame is threaded onto the surface of the adjusting bolts, allowing the fixed frame to be separated from the connecting frame by rotating the adjusting bolts. This facilitates replacing the connecting frame with a size suitable for the surface of the test material. A rubber anti-slip plate is installed at one end of the connecting frame to increase the friction between the connecting frame and the test material. Compared to existing technologies, this significantly improves the ease of use of the fatigue life testing machine.

[0016] 2. A threaded groove can also be made on the surface of the connecting rod, and a rotating handle is installed at one end of the connecting rod to control the rotation of the connecting rod, thus moving the sliding frame. One end of the connecting rod is connected to a mounting bracket, which has several fixing bolts inside for easy installation and disassembly of the device. A limit frame is rotatably connected to the surface of the sliding frame, and a fixing spring is fixedly installed at one end of the limit frame. The fixing spring pushes the limit frame, engaging it with the surface of the connecting rod, thereby fixing the position of the sliding frame. Several slots are made on the surface of the connecting rod to enhance the fixing effect between the limit frame and the connecting rod, effectively improving the performance of the device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a pneumatic spring fatigue life testing machine according to an embodiment of the application.

[0018] Figure 2 This is a schematic diagram of the fixed base structure according to an embodiment of the application;

[0019] Figure 3 This is a side view of the embodiment of the application.

[0020] Figure 4 This is a schematic diagram of the structure at point A in the embodiment of the application.

[0021] Explanation of reference numerals in the attached drawings: 1. Test machine body; 2. Test frame; 3. Test material; 4. Fixed base; 5. Connecting rod; 6. Sliding frame; 7. Connecting frame; 8. Fixed frame; 9. Adjusting bolt; 10. Anti-slip plate; 11. Threaded groove; 12. Rotating handle; 13. Mounting frame; 14. Fixing bolt; 15. Slot; 16. Limiting frame; 17. Fixing spring. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0023] This application discloses a pneumatic spring fatigue life testing machine, referring to... Figure 1 - Figure 2 The system includes a testing machine body 1. During use, after the testing machine body 1 is installed stably, a testing frame 2 is installed on the top of the testing machine body 1. The test material 3 is installed on the top of the testing machine body 1, and the test material 3 is squeezed by the testing frame 2. The test data is recorded and displayed by the testing machine body 1. A fixing seat 4 is installed on the top of the testing machine body 1. A connecting rod 5 is installed at one end of the fixing seat 4. A sliding frame 6 is slidably connected to the surface of the connecting rod 5. A connecting frame 7 is installed at one end of both the fixing seat 4 and the sliding frame 6. After the sliding frame 6 slides on the surface of the connecting rod 5, the distance between the two connecting frames 7 is controlled, which facilitates the fixing of test materials 3 of different sizes and effectively improves the convenience of using the fatigue life testing machine.

[0024] Reference Figure 2 The surfaces of the fixed base 4 and the sliding frame 6 are rotatably connected to adjusting bolts 9. The surface of the adjusting bolts 9 is threadedly connected to the fixed frame 8. The inner wall of the fixed frame 8 is connected to the surface of the connecting frame 7. After rotating the adjusting bolts 9, the connecting frame 7 is installed in the fixed frame 8. Rotating the adjusting bolts 9 in the opposite direction separates the fixed frame 8 from the connecting frame 7, making it easy to replace the connecting frame 7 with a size that matches the surface of the test material 3. One end of the connecting frame 7 is equipped with a rubber anti-slip plate 10. The anti-slip plate 10 increases the friction between the connecting frame 7 and the test material 3, thereby improving the fixing effect of the test material 3.

[0025] Reference Figure 2 - Figure 4 A threaded groove 11 is formed on the surface of the connecting rod 5, and a rotating handle 12 is installed at one end of the connecting rod 5. The surface of the threaded groove 11 is slidably connected to the inner wall of the sliding frame 6. Rotating the rotating handle 12 controls the rotation of the connecting rod 5, causing the sliding frame 6 to move, thereby facilitating the control of the distance between the two connecting frames 7. One end of the connecting rod 5 is connected to a mounting frame 13, and several fixing bolts 14 are snapped into the inside of the mounting frame 13. One end of the fixing bolts 14 is snapped into the surface of the testing machine body 1, thereby connecting the device to the surface of the testing machine body 1. Removing the fixing bolts 14 facilitates the disassembly of the device. A limiting frame 16 is rotatably connected to the surface of the sliding frame 6. A fixing spring 17 is fixedly installed at one end of the limiting frame 16. One end of the fixing spring 17 is connected to the surface of the sliding frame 6. The limiting frame 16 is pushed by the fixing spring 17 to engage with the surface of the connecting rod 5, thereby fixing the position of the sliding frame 6 to ensure the detection effect of the test material 3. Several slots 15 are opened on the surface of the connecting rod 5. The inner wall of the slot 15 engages with the bottom end of the limiting frame 16. The slots 15 enhance the fixing effect between the limiting frame 16 and the connecting rod 5, thereby improving the stability of the sliding frame 6 installation.

[0026] The implementation principle of a pneumatic spring fatigue life testing machine according to an embodiment of this application is as follows: A fixed base 4 is installed on the top of the testing machine body 1. A connecting rod 5 is installed at one end of the fixed base 4. A sliding frame 6 is slidably connected to the surface of the connecting rod 5. A connecting frame 7 is installed at one end of both the fixed base 4 and the sliding frame 6, so that the distance between the two connecting frames 7 can be controlled after the sliding frame 6 slides on the surface of the connecting rod 5, thereby facilitating the fixing of test materials 3 of different sizes. An adjusting bolt 9 is rotatably connected to the surface of both the fixed base 4 and the sliding frame 6. A fixed frame 8 is threadedly connected to the surface of the adjusting bolt 9. The inner wall of the fixed frame 8 is connected to the surface of the connecting frame 7, so that the connecting frame 7 can be installed in the fixed frame 8 after rotating the adjusting bolt 9, and the fixed frame 8 and the connecting frame 7 can be separated by rotating the adjusting bolt 9 in the opposite direction, so that the connecting frame 7 can be replaced with a size that is compatible with the surface of the test material 3. A rubber anti-slip plate 10 is installed at one end of the connecting frame 7, so that the friction between the connecting frame 7 and the test material 3 can be increased by the anti-slip plate 10, thereby improving the fixing effect of the test material 3.

[0027] A threaded groove 11 can also be made on the surface of the connecting rod 5, and a rotating handle 12 is installed at one end of the connecting rod 5. The surface of the threaded groove 11 is slidably connected to the inner wall of the sliding frame 6, so that the rotating handle 12 can be rotated to control the rotation of the connecting rod 5, thereby moving the sliding frame 6 and facilitating the control of the distance between the two connecting frames 7. One end of the connecting rod 5 is connected to a mounting frame 13, and several fixing bolts 14 are snapped into the inside of the mounting frame 13. One end of the fixing bolts 14 is snapped into the surface of the testing machine body 1, thereby connecting the device to the surface of the testing machine body 1. Removing the fixing bolts 14 facilitates the disassembly of the device. A limiting frame 16 is rotatably connected to the surface of the sliding frame 6. A fixing spring 17 is fixedly installed at one end of the limiting frame 16. One end of the fixing spring 17 is connected to the surface of the sliding frame 6 so that the limiting frame 16 can be pushed by the fixing spring 17 to engage with the surface of the connecting rod 5, thereby fixing the position of the sliding frame 6 to ensure the detection effect of the test material 3. Several slots 15 are opened on the surface of the connecting rod 5. The inner wall of the slot 15 engages with the bottom end of the limiting frame 16 so as to improve the fixing effect between the limiting frame 16 and the connecting rod 5, thereby improving the stability of the installation of the sliding frame 6.

[0028] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A pneumatic spring fatigue life tester comprising a tester body (1) and a fixing base (4), characterized in that: The test frame (2) is fixedly installed on the top of the test machine body (1), and the test material (3) is movably connected to the surface of the test machine body (1). Two connecting rods (5) are fixedly installed at one end of the fixed seat (4). The two connecting rods (5) are symmetrically distributed about the fixed seat (4), and a sliding frame (6) is slidably connected to the surface of the connecting rod (5). A connecting frame (7) is slidably installed at the end of the sliding frame (6) that is close to the fixed seat (4).

2. The pneumatic spring fatigue life tester of claim 1, wherein: The bottom end of the fixed seat (4) is fixedly connected to the top of the test machine body (1), and the bottom end of the sliding frame (6) is slidably installed on the top of the test machine body (1). The dimensions of the inner wall of the sliding frame (6) are compatible with the dimensions of the surface of the connecting rod (5).

3. The pneumatic spring fatigue life tester of claim 1, wherein: The surfaces of the fixed base (4) and the sliding frame (6) are rotatably connected with adjusting bolts (9). The surface of the adjusting bolts (9) is threaded with a fixed frame (8). The inner wall of the fixed frame (8) is slidably connected to the surface of the connecting frame (7), and the size of the inner wall of the fixed frame (8) is compatible with the size of the surface of the connecting frame (7).

4. The pneumatic spring fatigue life tester of claim 1, wherein: Anti-slip plates (10) are fixedly installed at the close ends of the two connecting frames (7). The anti-slip plates (10) are rubber sheets, and the size of the surface of the anti-slip plates (10) is compatible with the size of one end of the connecting frame (7).

5. The pneumatic spring fatigue life tester of claim 1 wherein: The surface of the connecting rod (5) is provided with a threaded groove (11), the inner wall of the threaded groove (11) is threadedly connected to the inner wall of the sliding frame (6), and a rotating handle (12) is fixedly installed at one end of the connecting rod (5).

6. The pneumatic spring fatigue life tester of claim 1 wherein: One end of the connecting rod (5) is rotatably connected to the mounting bracket (13). The inner wall of the mounting bracket (13) is threaded with several fixing bolts (14). The fixing bolts (14) are evenly distributed on the surface of the mounting bracket (13), and one end of the fixing bolts (14) is engaged with the surface of the test machine body (1).

7. The pneumatic spring fatigue life tester of claim 1 wherein: The surface of the sliding frame (6) is rotatably connected to a limiting frame (16), and a fixing spring (17) is fixedly installed between the limiting frame (16) and the sliding frame (6).

8. The pneumatic spring fatigue life tester of claim 1, wherein: The top of the connecting rod (5) is provided with several slots (15), which are evenly distributed on the surface of the connecting rod (5), and the inner wall of the slots (15) is engaged with the bottom of the limiting frame (16).

Images