A vehicle suspension testing device

Abstract

This utility model discloses an automotive suspension testing device, relating to the field of suspension testing technology. It includes a base plate, with guide pillars fixedly connected to the four corners of the base plate's upper surface. A top plate is fixedly connected above the four guide pillars. A movable plate is slidably connected between the four guide pillars via guide sleeves. Four connecting rods are fixedly connected above the movable plate, and a connecting plate is fixedly connected above the four connecting rods. A tension / compression sensor is fixedly connected to the center of the top of the connecting plate. A worm gear lift is fixedly connected to the center of the top surface of the top plate. A threaded rod is threadedly connected inside the worm gear lift, and the lower end of the threaded rod passes through the bottom surface of the top plate and is fixedly connected to a connecting piece. The bottom surface of the connecting piece is fixedly connected to the top of the tension / compression sensor. The advantages are: the worm gear lift achieves constant speed loading, supports bidirectional testing of tension and compression, has a high degree of automation, and can complete the entire testing process with a single operator, improving efficiency compared to traditional methods.

Description

Technical Field

[0001] This utility model relates to the field of suspension testing technology, specifically to an automotive suspension testing device. Background Technology

[0002] The suspension is a general term for all force-transmitting connection devices between the car frame (or monocoque body) and the axle (or wheels). Its function is to transmit the forces and torques acting between the wheels and the frame, and to buffer the impact forces transmitted from uneven road surfaces to the frame or body, and reduce the vibrations caused thereby, so as to ensure that the car can drive smoothly. The spring shock absorber is the most important component of the suspension, so it is essential to test the spring shock absorber.

[0003] Suspension components such as springs and shock absorbers may experience performance degradation due to fatigue and wear during long-term use. Therefore, it is necessary to verify their mechanical properties through testing devices. Traditional manual testing relies on the operator's experience and applies force by loading weights or using simple lever devices. It is impossible to accurately control the loading speed and stroke. Most testing devices are designed for a single type of component (such as only being able to test the compression performance of springs). When changing the testing object, the mechanical structure needs to be readjusted, which is time-consuming and labor-intensive. Some simple testing equipment does not have protective devices, which can easily cause flying debris and injuries when components break or are overloaded. To address the above problems, a new automotive suspension testing device is proposed. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides an automotive suspension testing device. This device solves the problem that current suspension components such as springs and shock absorbers may experience performance degradation due to fatigue and wear during long-term use, thus requiring testing to verify their mechanical properties. Traditional manual testing relies on operator experience, applying force through weights or simple levers, which cannot precisely control the loading speed and stroke. Most testing devices are designed for a single type of part (e.g., only testing spring compression performance), requiring readjustment of the mechanical structure when changing the testing object, which is time-consuming and labor-intensive. Some simple testing equipment lacks protective devices, easily causing injuries from flying debris when parts break or are overloaded.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an automotive suspension testing device, comprising a base plate, guide posts fixedly connected at the four corners of the upper surface of the base plate, a top plate fixedly connected above the four guide posts, a movable plate slidably connected between the four guide posts via guide sleeves, four connecting rods fixedly connected above the movable plate, a connecting plate fixedly connected above the four connecting rods, a tension / compression sensor fixedly connected to the center of the top of the connecting plate, a worm gear lift fixedly connected to the center of the upper surface of the top plate, a threaded rod internally threaded into the worm gear lift, the lower end of the threaded rod passing through the bottom surface of the top plate and fixedly connected to a connector, the bottom surface of the connector being fixedly connected to the top of the tension / compression sensor, and protective components provided on both the left and right sides of the upper surface of the base plate.

[0006] Preferably, a through hole is provided in the middle of the upper part of the movable plate, and an upper connecting seat is detachably connected inside the through hole. A lower connecting seat is fixedly connected to the middle of the upper surface of the base plate. A part to be tested is provided between the upper connecting seat and the lower connecting seat. The upper and lower ends of the part to be tested are connected to the upper connecting seat and the lower connecting seat respectively by pins.

[0007] Preferably, a displacement sensor is provided between the movable plate and the base plate, with the upper end of the displacement sensor fixedly connected to the bottom surface of the movable plate and the lower end of the displacement sensor fixedly connected to the upper surface of the base plate.

[0008] Preferably, a servo motor is fixedly installed on the right side of the worm gear elevator, and the output end of the servo motor is fixedly connected to the input end of the worm gear elevator via a coupling.

[0009] Preferably, the protective component includes a fixing post, the bottom of which is fixedly connected to the upper surface of the base plate, and a mounting hole is provided through the middle of the fixing post, and a cylinder is fixedly installed inside the mounting hole.

[0010] Preferably, a fixing block is fixedly connected to the output end of the cylinder, and an arc-shaped protective cover is fixedly connected to the side of the fixing block away from the cylinder.

[0011] Preferably, the protective cover has guide rods fixedly connected to both the upper and lower ends on the side near the fixing block, and both guide rods are slidably connected to the fixing column through guide sleeves.

[0012] Compared with existing technologies, the advantages of this utility model are as follows: This utility model achieves constant speed loading by setting up a worm gear lifting machine, supports bidirectional testing of tension and compression, has a high degree of automation, and can complete the entire process of testing by a single person, which improves efficiency compared with traditional methods. The tension and compression sensors and displacement sensors collect data synchronously in real time and record the force-displacement curve in real time, which can accurately capture the yield point and ultimate load of the parts. The upper connecting seat and the through hole are fixed with bolts, which is compatible with suspension parts of different lengths and interface forms. The cylinder quickly drives the arc-shaped protective cover to close before testing, forming a fully enclosed protective area to prevent the parts from breaking and flying. At the same time, the four guide columns and guide sleeves work together to ensure the vertical movement of the moving plate, avoid detection deviation caused by off-center loading, reduce the vibration amplitude of the equipment during operation, and improve both safety and reliability. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the protective component of this utility model;

[0015] Figure 3 This is an exploded view of the movable plate and the upper connecting seat in this utility model;

[0016] Figure 4 This is a schematic diagram of the protective component structure in this utility model.

[0017] The numbers on the map are:

[0018] 1. Base plate; 2. Guide column; 3. Top plate; 4. Moving plate; 5. Connecting rod; 6. Connecting plate; 7. Tension / compression sensor; 8. Connecting component; 9. Worm gear elevator; 10. Threaded rod; 11. Servo motor; 12. Lower connecting seat; 13. Upper connecting seat; 14. Through hole; 15. Protective component; 1501. Fixed column; 1502. Mounting hole; 1503. Cylinder; 1504. Guide rod; 1505. Fixed block; 1506. Protective cover; 16. Measured part; 17. Displacement sensor. Detailed Implementation

[0019] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0020] Reference Figures 1-4As shown, an automotive suspension testing device includes a base plate 1. Guide pillars 2 are fixedly connected to the four corners of the upper surface of the base plate 1. A top plate 3 is fixedly connected above the four guide pillars 2. A movable plate 4 is slidably connected between the four guide pillars 2 via guide sleeves. The design of the guide pillars 2 can effectively prevent the movable plate 4 from shifting or shaking during movement, ensuring that the movable plate 4 always moves in the vertical direction, thereby ensuring that the data collected by the tension / compression sensor 7 and the displacement sensor 17 are accurate and reliable. Four connecting rods 5 are fixedly connected above the movable plate 4. A connecting plate 6 is fixedly connected above the four connecting rods 5. A tension / compression sensor is fixedly connected to the center of the top of the connecting plate 6. The sensor 7 is fixedly connected to the worm gear elevator 9 inside the upper surface of the top plate 3. The worm gear elevator 9 is threadedly connected to the middle of the threaded rod 10. The lower end of the threaded rod 10 passes through the bottom surface of the top plate 3 and is fixedly connected to the connector 8. The bottom surface of the connector 8 is fixedly connected to the top of the tension and compression sensor 7. The tension and compression sensor 7 can be an Omega LCCD / LCMCD series sensor. This sensor can collect the tensile or compressive force value borne by the tested part 16 in real time and accurately during the detection process, and transmit the data to the external controller to provide a reliable basis for subsequent data analysis and processing. Protective components 15 are provided on both the left and right sides of the upper surface of the base plate 1.

[0021] Specifically, a through hole 14 is provided in the middle of the upper part of the movable plate 4. An upper connecting seat 13 is detachably connected inside the through hole 14. A lower connecting seat 12 is fixedly connected to the middle of the upper surface of the base plate 1. The part to be tested 16 is arranged between the upper connecting seat 13 and the lower connecting seat 12. The upper and lower ends of the part to be tested 16 are connected to the upper connecting seat 13 and the lower connecting seat 12 respectively by pins. This connection method is convenient and quick, and can quickly install and remove the part to be tested 16, improving the testing efficiency. At the same time, the design of the detachable upper connecting seat 13 makes the testing device adaptable to the part to be tested 16 of different specifications and models, improving the versatility of the device.

[0022] Specifically, a displacement sensor 17 is installed between the moving plate 4 and the base plate 1. The upper end of the displacement sensor 17 is fixedly connected to the bottom surface of the moving plate 4, and the lower end of the displacement sensor 17 is fixedly connected to the upper surface of the base plate 1. The displacement sensor 17 can be a Keyence high-precision contact digital sensor. This sensor can record the displacement of the moving plate 4 in real time and accurately, and transmit the data to an external controller, providing a reliable basis for subsequent data analysis and processing. By synchronously analyzing the pressure value data collected by the tension and compression sensor 7, the performance of the tested part 16 can be fully understood.

[0023] Specifically, a servo motor 11 is fixedly installed on the right side of the worm gear elevator 9. The output end of the servo motor 11 is fixedly connected to the input end of the worm gear elevator 9 through a coupling. The servo motor 11 can drive the worm gear elevator 9 to operate according to preset speed and parameters, thereby precisely controlling the moving speed and position of the threaded rod 10 and ensuring the accuracy and stability of the detection process.

[0024] The protective component 15 includes a fixing post 1501, the bottom of which is fixedly connected to the upper surface of the base plate 1. A mounting hole 1502 is provided through the middle of the fixing post 1501. A cylinder 1503 is fixedly installed inside the mounting hole 1502. During the test, the cylinder 1503 drives the protective cover 1506 to close, forming a safety protection area to prevent injury to the operator in case of accidental breakage or other situations during the test of the tested part 16. After the test is completed, the cylinder 1503 drives the protective cover 1506 to open automatically, which facilitates the disassembly of the part.

[0025] Specifically, a fixing block 1505 is fixedly connected to the output end of the cylinder 1503. An arc-shaped protective cover 1506 is fixedly connected to the side of the fixing block 1505 away from the cylinder 1503. The arc-shaped protective cover 1506 can better wrap the part 16 under test and provide more comprehensive protection. During the test, the protective covers 1506 on the left and right sides close to form a safe protection area, which effectively protects the safety of the operator.

[0026] Specifically, the protective cover 1506 has guide rods 1504 fixedly connected to both the upper and lower ends of the side near the fixing block 1505. Both guide rods 1504 are slidably connected to the fixing column 1501 through guide sleeves. The design of the guide rods 1504 can ensure that the protective cover 1506 moves smoothly under the drive of the cylinder 1503, prevent the protective cover 1506 from shaking or shifting during the movement, and improve the stability and reliability of the protective component 15.

[0027] Working principle: First, the servo motor 11 starts, driving the worm gear lift 9 to slowly lower the threaded rod 10. The moving plate 4 is adjusted to the initial zero position (displacement sensor 17 is zeroed). Then, the part to be tested 16 is installed between the upper connecting seat 13 and the lower connecting seat 12 via a pin, ensuring that the axis is aligned with the center of the threaded rod 10. The detection parameters (such as loading speed and maximum load) are set by the external controller. The servo motor 11 drives the threaded rod 10 to move upward at the preset speed, causing the moving plate 4 to rise along the guide column 2. The tension and compression sensor 7 collects the pressure value borne by the part in real time, and the displacement sensor 17 records the displacement of the moving plate 4 synchronously. When the preset maximum load or displacement is reached, the servo motor 11 automatically stops, completing the test process. If the compressive strength needs to be tested, the servo motor 11 reverses to lower the threaded rod 10. The tension and compression sensor 7 collects the data of the downward compression process synchronously. During the test, the cylinder 1503 drives the protective cover 1506 to close, and the guide rod 1504 ensures smooth movement, forming a safe protection area. After the test, the protective cover 1506 automatically opens, facilitating the disassembly of the part.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An automotive suspension testing apparatus, characterized by: The system includes a base plate (1), with guide posts (2) fixedly connected at the four corners of the upper surface of the base plate (1). A top plate (3) is fixedly connected above the four guide posts (2). A movable plate (4) is slidably connected between the four guide posts (2) through guide sleeves. Four connecting rods (5) are fixedly connected above the movable plate (4). A connecting plate (6) is fixedly connected above the four connecting rods (5). A tension / compression sensor (7) is fixedly connected to the middle of the upper part of the connecting plate (6). A worm gear elevator (9) is fixedly connected inside the upper surface of the top plate (3). A threaded rod (10) is threadedly connected to the middle of the worm gear elevator (9). The lower end of the threaded rod (10) passes through the bottom surface of the top plate (3) and is fixedly connected to a connector (8). The bottom surface of the connector (8) is fixedly connected to the top of the tension / compression sensor (7). Protective components (15) are provided on both the left and right sides of the upper surface of the base plate (1).

2. The apparatus of claim 1, wherein: The moving plate (4) has a through hole (14) in the middle of its upper part. An upper connecting seat (13) is detachably connected inside the through hole (14). A lower connecting seat (12) is fixedly connected to the middle of the upper surface of the base plate (1). A part to be tested (16) is provided between the upper connecting seat (13) and the lower connecting seat (12). The upper and lower ends of the part to be tested (16) are connected to the upper connecting seat (13) and the lower connecting seat (12) respectively by pins.

3. The apparatus of claim 1, wherein: A displacement sensor (17) is provided between the movable plate (4) and the base plate (1). The upper end of the displacement sensor (17) is fixedly connected to the bottom surface of the movable plate (4), and the lower end of the displacement sensor (17) is fixedly connected to the upper surface of the base plate (1).

4. The apparatus of claim 1, wherein: A servo motor (11) is fixedly installed on the right side of the worm gear elevator (9), and the output end of the servo motor (11) is fixedly connected to the input end of the worm gear elevator (9) through a coupling.

5. The apparatus of any one of claims 1-4, wherein: The protective component (15) includes a fixing post (1501), the bottom of which is fixedly connected to the upper surface of the base plate (1), and a mounting hole (1502) is provided through the middle of the fixing post (1501), and a cylinder (1503) is fixedly installed inside the mounting hole (1502).

6. The apparatus of claim 5, wherein: A fixing block (1505) is fixedly connected to the output end of the cylinder (1503), and an arc-shaped protective cover (1506) is fixedly connected to the side of the fixing block (1505) away from the cylinder (1503).

7. The apparatus of claim 6, wherein: The protective cover (1506) has guide rods (1504) fixedly connected to both the upper and lower ends of the side near the fixing block (1505). Both guide rods (1504) are slidably connected to the fixing column (1501) through guide sleeves.

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