A test device for spring actuators

Abstract

This utility model discloses a spring actuator testing device, including a base frame. A limiting cylinder with an open upper end is vertically fixed to the bottom of the base frame, and a spring actuator is placed inside the limiting cylinder. A guide rod is vertically fixed to the bottom wall of the base frame, with symmetrically arranged limiting cylinders. A fixing plate is horizontally fixed to the top of the base frame, and a testing pressure device is provided on the fixing plate and slides on the guide rod. The testing pressure device contains an adjustment mechanism capable of adjusting the spring actuator under different extension and contraction amounts. This utility model belongs to the field of spring actuator testing technology, specifically referring to a spring actuator testing device.

Description

Technical Field

[0001] This utility model belongs to the field of spring actuator testing technology, specifically referring to a spring actuator testing device. Background Technology

[0002] A spring actuator is an actuating element that combines spring force and fluid (hydraulic or pneumatic) power. It is mainly used to realize the linear motion (such as extension, retraction, push and pull) or reset action of mechanical parts. Spring actuator testing is a performance testing and verification process for this mechanical device, with the aim of ensuring that it can work stably and reliably in practical applications.

[0003] In the existing technology, when testing the actuator, it is not convenient to fix the spring actuator, it is easy to slip during the test, and it is not possible to measure the pressure value of the spring actuator under different extension and contraction conditions. Therefore, improvements are needed. Utility Model Content

[0004] The technical problem this invention aims to solve is that when testing a spring actuator, it is inconvenient to fix it, as it is prone to lateral slippage, and it is also inconvenient to measure the pressure value of the spring actuator under different extension and contraction conditions.

[0005] To solve the above problems, the technical solution adopted by this utility model is as follows: A spring actuator testing device includes a base frame, a limiting cylinder with an open upper end is vertically fixed to the bottom of the base frame, a spring actuator is placed in the limiting cylinder, a guide rod is vertically fixed to the bottom wall of the base frame and the limiting cylinders are symmetrically arranged, a fixing plate is horizontally fixed to the top of the base frame, a test pressure device is provided on the fixing plate and slides on the guide rod, and the test pressure device is provided with an adjustment device that can adjust the spring actuator under different extension and contraction amounts.

[0006] Furthermore, the test compression device includes a motor, which is fixed to a fixed plate. The output end of the motor is connected to a turntable. An adjustment device is disposed inside the turntable and is connected to a connecting rod through the adjustment device. A pressure plate passes through the guide rod and is hinged to the other end of the connecting rod. A pressure sensor is disposed at the lower end of the pressure plate.

[0007] Furthermore, the adjusting device includes a slider that slides within a turntable. A lead screw is rotatably mounted inside the turntable and threadedly connected to the slider. The lead screw is a self-locking lead screw. A rotating shaft is mounted on the slider and is connected to a connecting rod shaft. The slider slides within the turntable in a snap-fit ​​manner.

[0008] Furthermore, a cap is fitted onto the upper end of the spring actuator cylinder, a pointer is horizontally arranged on the side wall of the cap, and scale lines are provided on the guide rod.

[0009] Furthermore, a test panel is provided on the base frame, the test panel is connected to the pressure sensor signal via wires, and a display screen is provided on the test panel.

[0010] The beneficial effects achieved by adopting the above-described structure are as follows:

[0011] 1. This utility model sets up a test pressure device, which drives a turntable to rotate via a motor. The turntable drives a connecting rod, which pushes a pressure plate to reciprocate on a guide rod. When moving downward, the pressure plate can perform a downward pressure test on the spring actuator cylinder. The pressure sensor can detect the value of the spring actuator cylinder being compressed and display it on the test panel.

[0012] 2. This utility model, by setting a limiting cylinder, places the spring actuator cylinder in the limiting cylinder, which can prevent it from sliding and ensure the validity of the test. With the help of the adjustment device, the lead screw is rotated, and the lead screw drives the slider to slide in the turntable. The distance between the slider and the center of the turntable can be adjusted, thereby adjusting the up and down movement range of the connecting rod, and thus achieving the test of the spring actuator cylinder under different extension and contraction. Attached Figure Description

[0013] Figure 1 The overall structure of the spring actuator cylinder testing device of this utility model Figure 1 ;

[0014] Figure 2 The overall structure of the spring actuator cylinder testing device of this utility model Figure 2 ;

[0015] Figure 3 for Figure 1 Enlarged view of a portion of point A in the middle;

[0016] Figure 4 for Figure 1 Enlarged view of section B in the middle.

[0017] The components are as follows: 1. Base frame, 2. Limiting cylinder, 3. Spring actuating cylinder, 4. Guide rod, 5. Test panel, 6. Fixing plate, 7. Test pressure device, 8. Adjustment device, 9. Motor, 10. Turntable, 11. Connecting rod, 12. Pressure plate, 13. Pressure sensor, 14. Slider, 15. Lead screw, 16. Rotating shaft, 17. Cap, 18. Pointer, 19. Scale line. Detailed Implementation

[0018] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0020] like Figure 1-4 This utility model discloses a spring actuator cylinder testing device, comprising a base frame 1, a limiting cylinder 2 with an open upper end fixed vertically at the bottom of the base frame 1, a spring actuator cylinder 3 placed in the limiting cylinder 2, a guide rod 4 fixed vertically on the bottom wall of the base frame 1 and symmetrically arranged with the limiting cylinder 2, a cap 17 sleeved on the upper end of the spring actuator cylinder 3, a pointer 18 horizontally arranged on the side wall of the cap 17, and a scale line 19 arranged on the guide rod 4. By pointing the pointer 18 to the scale line 19, the amount of extension and retraction displacement of the spring actuator cylinder 3 can be determined. A fixing plate 6 is horizontally fixed to the top of the base frame 1, a test pressure device 7 is arranged on the fixing plate 6 and slides on the guide rod 4, and an adjustment device 8 is arranged inside the test pressure device 7 to adjust the spring actuator cylinder 3 under different extension and retraction amounts.

[0021] like Figure 1 , 2 4. The testing compression device 7 includes a motor 9, which is fixed to the fixed plate 6. The output end of the motor 9 is connected to a turntable 10. An adjustment device 8 is set inside the turntable 10 and is connected to a connecting rod 11 through the adjustment device 8. A pressure plate 12 passes through the guide rod 4 and is hinged to the other end of the connecting rod 11. A pressure sensor 13 is set at the lower end of the pressure plate 12. When the connecting rod 11 pushes the pressure plate 12 to slide, the pressure sensor 13 can detect the elastic force on the spring actuator 3. At the same time, due to the rotation of the turntable 10, the spring actuator 3 can be repeatedly tested, and its fatigue strength can be tested.

[0022] like Figure 1-3The adjusting device 8 includes a slider 14, which slides within a turntable 10. A lead screw 15 is rotatably mounted inside the turntable 10 and threadedly connected to the slider 14. The lead screw 15 is a self-locking lead screw. A rotating shaft 16 is mounted on the slider 14 and is axially connected to the connecting rod 11. The slider 14 slides within the turntable 10 in a snap-fit ​​manner and will not detach from the turntable 10. By adjusting the position of the slider 14 relative to the center of the turntable 10, the pushing displacement of the connecting rod 11 on the pressure plate 12 can be adjusted, thereby adjusting the test of the spring actuator 3 under different compression levels.

[0023] A test panel 5 is provided on the base frame 1. The test panel 5 is connected to the pressure sensor 13 via wires. The test panel 5 is equipped with a display screen that can display the test values ​​of the pressure sensor 13.

[0024] In practical use, the spring actuator 3 is first placed in the limiting cylinder 2, located below the pressure plate 12. By starting the motor 9, the turntable 10 is driven to rotate. Since the slider 14 is eccentric on the turntable 10, the connecting rod 11 can push the pressure plate 12 to slide on the guide rod 4. The lower end of the pressure plate 12 is equipped with a pressure sensor 13. When the pressure plate 12 moves down, the pressure sensor 13 will press the spring actuator 3. Since there is a spring inside the spring actuator 3, it will have a reaction force on the pressure sensor 13, so the compressive force of the spring can be tested. The test value will be displayed on the test panel 5.

[0025] When testing the spring actuator 3, the pointer 18 will always point to the scale line 19 on the guide rod 4. The extension and retraction of the spring actuator 3 can be determined through the scale line 19.

[0026] When it is necessary to adjust the test of the spring actuator 3 under different extension and contraction amounts, the screw 15 is turned, which drives the slider 14 to slide in the turntable 10. This changes the distance between the slider 14 and the center of the turntable 10, and the distance that the connecting rod 11 pushes the pressure plate 12 also changes. The amount of compression of the spring actuator 3 also changes. This allows for the testing of the spring actuator 3 under different compression amounts, and parameters such as fatigue strength and elastic value under different extension and contraction amounts can be tested.

[0027] It should be noted that the test panel 5 and pressure sensor 13 in the solution work on the same principle as a pressure testing machine. The value detected by the pressure sensor 13 is transmitted to the test panel 5. This is very common in practical applications and will not be described in detail.

[0028] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A spring actuator testing device, comprising a base frame (1), characterized in that: The bottom of the base frame (1) is vertically fixed to a limiting cylinder (2) with an open top, and a spring actuating cylinder (3) is placed in the limiting cylinder (2); a guide rod (4) is vertically fixed to the bottom wall of the base frame (1), and the guide rod (4) is symmetrically arranged on both sides of the limiting cylinder (2); a fixing plate (6) is horizontally fixed to the top of the base frame (1); a test pressure device (7) is provided on the fixing plate (6), and the test pressure device (7) is slidably connected to the guide rod (4); an adjustment device (8) for adjusting the extension and retraction of the spring actuating cylinder (3) is provided inside the test pressure device (7).

2. The spring actuator testing device according to claim 1, characterized in that: The test pressure device (7) includes a motor (9) fixed to a fixed plate (6), the output end of which is connected to a turntable (10); the adjustment device (8) is located inside the turntable (10) and connected to a connecting rod (11); a pressure plate (12) passes through the guide rod (4), and the pressure plate (12) is hinged to the end of the connecting rod (11) away from the turntable (10); a pressure sensor (13) is provided at the lower end of the pressure plate (12).

3. The spring actuator testing device according to claim 2, characterized in that: The adjusting device (8) includes a slider (14) slidably disposed in a turntable (10). A lead screw (15) is rotatably disposed inside the turntable (10). The lead screw (15) is threadedly connected to the slider (14). The lead screw (15) is a self-locking lead screw. A rotating shaft (16) is disposed on the slider (14). One end of the connecting rod (11) is axially connected to the rotating shaft (16). The slider (14) slides in the turntable (10) in a snap-fit ​​manner.

4. The spring actuator testing device according to claim 1, characterized in that: The upper end of the spring actuator (3) is fitted with a cap (17), and a pointer (18) is fixed to the side wall of the cap (17) in the horizontal direction. The guide rod (4) is provided with scale lines (19).

5. The spring actuator testing device according to claim 2, characterized in that: The base frame (1) is provided with a test panel (5), which is connected to the pressure sensor (13) via wires and is provided with a display screen.

6. The spring actuator testing device according to claim 4, characterized in that: The cap (17) is fitted onto the upper end of the spring actuator (3).

7. The spring actuator cylinder testing device according to claim 3, characterized in that: The slider (14) and the turntable (10) are connected by a snap-fit ​​sliding connection.

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