Spring fatigue detection device

Abstract

The utility model discloses a spring fatigue detection device in the technical field of detection equipment, which comprises a base, a frame body is fixedly mounted on the base, a frame is fixedly mounted on the frame body, a first electric push rod is fixedly mounted at the top of the frame, a telescopic end of the first electric push rod penetrates through the frame and is fixedly connected with a pressing plate, and the pressing plate is fixedly connected with the frame. A through hole is formed in the top of the frame body. According to the utility model, through the arrangement of the cylinders, the cross plate and the driving assembly, during use, a worker can sleeve a spring among the outer sides of the four cylinders and then carry out fatigue detection, and when the diameter of the spring is larger or smaller, the worker can drive the four cylinders to move along the outer surface of the cross plate through the driving assembly, so that fatigue detection is carried out. The four cylinders are mutually gathered or dispersed, so that the springs with different diameters can be sleeved, the applicability is improved, and the springs with different diameters can be ensured to keep good stability during fatigue detection.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to a spring fatigue testing device. Background Technology

[0002] A spring is a mechanical part that works by utilizing elasticity. It is used to control the movement of machine parts, dampen impacts or vibrations, store energy, and measure the magnitude of force. It has a wide range of uses in industrial production and daily life. After a spring is manufactured, various properties of the spring need to be tested, such as load tests, permanent deformation tests, and fatigue life tests. When conducting fatigue life tests on springs, a spring fatigue testing device is required.

[0003] However, existing technologies have some problems: when using existing spring fatigue testing devices, the operator places the spring on the testing device and repeatedly compresses the spring to perform the test. Some existing devices also have a plug, on which the spring is fitted to improve the spring's stability. However, the size of the plug is fixed, making it difficult to stably fit springs of different diameters, resulting in low applicability. Therefore, we propose a spring fatigue testing device. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a spring fatigue testing device that can adapt to springs of different diameters, thereby ensuring the stability of the spring during fatigue testing.

[0005] The purpose of this utility model is achieved as follows: A spring fatigue testing device includes a base, a frame fixedly mounted on the base, a frame fixedly mounted on the frame, a first electric push rod fixedly mounted on the top of the frame, the telescopic end of the first electric push rod penetrating the frame and fixedly connected to a pressure plate, a through hole opened on the top of the frame, a cross plate fixedly mounted on the inner wall of the through hole, four columns movably sleeved on the outer surface of the cross plate, the columns being connected to the base through a drive assembly, the drive assembly being able to adjust the position of the four columns to sleeve springs of different diameters for testing.

[0006] Optionally, the drive assembly includes a second electric actuator, which is fixedly mounted on the base. A push-pull block is fixedly connected to the telescopic end of the second electric actuator. A square frame is fixedly mounted on the bottom of the column, and an oblique hole is provided on the square frame. A circular block located inside the oblique hole is fixedly mounted on the push-pull block.

[0007] Optionally, a pressure block is fixedly installed at the bottom of the pressure plate, and the pressure block is conical.

[0008] Optionally, the column is provided with a side groove, and a ball bearing is movably installed inside the side groove.

[0009] Optionally, a guide rod is fixedly installed on the top of the column, and the guide rod is inclined.

[0010] Optionally, the outer surface of the circular block is slidably connected to the inner wall of the oblique hole, and the inner wall of the oblique hole is coated with a lubricating layer.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] This invention, by setting up columns, a cross plate, and a drive assembly, allows the operator to fit the springs between the outer sides of the four columns during use and then perform fatigue testing. When the spring diameter is large or small, the operator can use the drive assembly to make the four columns move along the outer surface of the cross plate, causing the four columns to converge or disperse. This allows it to accommodate springs of different diameters, improving applicability and ensuring that springs of different diameters maintain good stability during fatigue testing. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0014] Figure 1 This is a structural schematic diagram provided by this utility model.

[0015] Figure 2 This is a front sectional view of the structure provided by this utility model.

[0016] Figure 3 This is a schematic diagram of the top structure of the frame provided by this utility model.

[0017] Figure 4 This is a schematic diagram of the separation structure of the push-pull block and the square frame provided by this utility model.

[0018] Figure 5 yes Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0019] In the diagram: 1. Base; 2. Frame; 3. Frame; 4. First electric actuator; 5. Pressure plate; 6. Through hole; 7. Cross plate; 8. Column; 9. Second electric actuator; 10. Push-pull block; 11. Square frame; 12. Angled hole; 13. Round block; 14. Pressure block; 15. Side groove; 16. Ball bearing; 17. Guide rod. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figures 1 to 5 As shown in the figure, the spring fatigue testing device provided by this utility model includes a base 1, a frame 2 fixedly installed on the base 1, a frame 3 fixedly installed on the frame 2, a first electric push rod 4 fixedly installed on the top of the frame 3, the telescopic end of the first electric push rod 4 passing through the frame 3 and fixedly connected to a pressure plate 5, a through hole 6 opened on the top of the frame 2, a cross plate 7 fixedly installed on the inner wall of the through hole 6, four columns 8 movably sleeved on the outer surface of the cross plate 7, the columns 8 and the base 1 are connected by a drive assembly, the drive assembly can adjust the position of the four columns 8 to sleeve springs of different diameters for testing.

[0022] Furthermore, the drive assembly includes a second electric actuator 9, which is fixedly mounted on the base 1. The telescopic end of the second electric actuator 9 is fixedly connected to a push-pull block 10. A square frame 11 is fixedly mounted on the bottom of the column 8. An oblique hole 12 is provided on the square frame 11. A round block 13 located inside the oblique hole 12 is fixedly mounted on the push-pull block 10.

[0023] By activating the second electric actuator 9, the push-pull block 10 can drive the round block 13 to move upward or downward, thereby squeezing the inner wall of the inclined hole 12. This causes the four square frames 11 to drive the four pillars 8 to gather or disperse, thereby adjusting the position of the pillars 8 to accommodate springs of different diameters and ensuring the stability of the springs during fatigue testing.

[0024] Furthermore, a pressure block 14 is fixedly installed at the bottom of the pressure plate 5, and the pressure block 14 is conical.

[0025] The tapered design of the pressure block 14 allows the spring to be further stabilized when it is pressed from above, thus preventing the spring from shifting.

[0026] Furthermore, a side groove 15 is provided on the column 8, and a ball bearing 16 is movably installed inside the side groove 15.

[0027] When the spring is repeatedly compressed between the outer sides of the four pillars 8, the design of the ball bearing 16 can reduce the friction between the spring and the pillars 8, thereby improving the accuracy of fatigue testing of the spring.

[0028] Furthermore, a guide rod 17 is fixedly installed on the top of the column 8, and the guide rod 17 is inclined.

[0029] When the spring is being tested, repeated compression of the spring may cause the middle part of the spring to be slightly tilted in the horizontal direction. The design of the guide rod 17 can guide the spring and prevent the spring from being stuck between the four pillars 8 due to tilting, which would affect the testing accuracy.

[0030] Furthermore, the outer surface of the circular block 13 is slidably connected to the inner wall of the oblique hole 12, and the inner wall of the oblique hole 12 is coated with a lubricating layer.

[0031] Working principle and usage process of this utility model:

[0032] First, the staff needs to adjust the position of the column 8 according to the diameter of the spring to be tested. During adjustment, the second electric push rod 9 can be activated, causing the push-pull block 10 to move the round block 13 up or down, thereby squeezing the inner wall of the inclined hole 12. This causes the four square frames 11 to move the four columns 8 together or apart, thus adjusting the position of the columns 8 to accommodate springs of different diameters and ensure the stability of the spring during fatigue testing. After adjusting the position of the columns 8, the staff can fit the spring between the outer surfaces of the four columns 8. Then, the first electric push rod 4 is activated, causing the pressure plate 5 to move the pressure block 14 up and down repeatedly to compress the spring for fatigue testing. It should be noted that sensors and other devices can be installed on the frame 2 to assist in the collection of fatigue test data. This is a common method in fatigue testing devices and will not be elaborated here.

[0033] The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A spring fatigue testing device, comprising a base (1), a frame (2) fixedly mounted on the base (1), a frame (3) fixedly mounted on the frame (2), a first electric actuator (4) fixedly mounted on the top of the frame (3), the telescopic end of the first electric actuator (4) penetrating the frame (3) and fixedly connected to a pressure plate (5), characterized in that: The top of the frame (2) is provided with a through hole (6), and a cross plate (7) is fixedly installed on the inner wall of the through hole (6). Four columns (8) are movably sleeved on the outer surface of the cross plate (7). The columns (8) are connected to the base (1) through a drive assembly. The drive assembly can adjust the position of the four columns (8) to sleeve springs of different diameters for detection work.

2. The spring fatigue testing device according to claim 1, characterized in that: The drive assembly includes a second electric actuator (9), which is fixedly mounted on the base (1). The telescopic end of the second electric actuator (9) is fixedly connected to a push-pull block (10). A square frame (11) is fixedly mounted on the bottom of the column (8). An oblique hole (12) is provided on the square frame (11). A round block (13) located inside the oblique hole (12) is fixedly mounted on the push-pull block (10).

3. The spring fatigue testing device according to claim 1, characterized in that: A pressure block (14) is fixedly installed at the bottom of the pressure plate (5), and the pressure block (14) is conical.

4. The spring fatigue testing device according to claim 1, characterized in that: The column (8) has a side groove (15) and a ball bearing (16) is movably installed inside the side groove (15).

5. The spring fatigue testing device according to claim 1, characterized in that: A guide rod (17) is fixedly installed on the top of the column (8), and the guide rod (17) is inclined.

6. The spring fatigue testing device according to claim 2, characterized in that: The outer surface of the circular block (13) is slidably connected to the inner wall of the oblique hole (12), and the inner wall of the oblique hole (12) is coated with a lubricating layer.

Images