Automobile suspension spring testing device with protection structure

Abstract

The utility model relates to the technical field of automobile suspension spring testing, and discloses an automobile suspension spring testing device with a protection structure, which comprises a testing box and a tested spring, an infrared distance meter is arranged at the top of the testing box, a guide column is fixed in the testing box, a testing assembly is arranged in the testing box, and the testing assembly is connected with the infrared distance meter. The automobile suspension spring testing device comprises a testing box, lifting assemblies are arranged in the testing box and on the top of the testing box, the testing assembly comprises a counterweight frame, a counterweight block, a guide wheel and a guide rail, and the guide wheel penetrates through the side face of the counterweight frame and is rotationally connected with the counterweight frame. Balancing weights with the same weight are placed in the counterweight frame according to needs, during testing, under the guiding effect of the guide wheels and the guide rails, it is guaranteed that the counterweight frame can only vertically move up and down, and it is avoided that the counterweight frame inclines due to bouncing of the tested spring, the test box is impacted, and the test box is damaged.

Description

Technical Field

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

[0002] A car suspension mainly consists of three parts: elastic elements, guiding devices, and shock absorbers. As the only elastic connection between the chassis and the axle, the elastic element bears and transmits vertical loads, mitigating and suppressing impacts caused by uneven road surfaces. In passenger cars, the front and rear suspensions primarily use coil springs as the suspension elastic elements. These coil springs need to meet performance requirements such as stiffness, durability, and creep resistance. The performance of the elastic element is closely related to the overall vehicle comfort and handling stability, directly affecting the car's quality.

[0003] For example, the automobile suspension spring damping test device disclosed in announcement number "CN213902855U" uses a counterweight iron frame to fall under the action of gravity and compress the spring. At this time, an infrared rangefinder detects the height fluctuation difference of the counterweight iron frame. Furthermore, the operator attaches the counterweight block to the threaded rod, and tests again after adding weight. The operation is more convenient and faster, improving testing efficiency and accuracy.

[0004] However, in actual operation, because the spring being tested has a certain elasticity, when the counterweight frame is pressed downwards against the spring, the spring will cause the counterweight frame to bounce upwards to a certain extent under its own elasticity. This causes the counterweight frame to tilt to a certain extent, which can easily cause an impact to the test box, resulting in some damage to the test box. Furthermore, it is quite troublesome for the staff to reset the counterweight frame afterward. Therefore, we propose an automotive suspension spring testing device with a protective structure. Utility Model Content

[0005] The purpose of this invention is to provide an automotive suspension spring testing device with a protective structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a car suspension spring testing device with a protective structure, comprising a test box and a spring to be tested, an infrared rangefinder being provided on the top of the test box, a guide column being fixed inside the test box, a test assembly being provided inside the test box, and a lifting assembly being provided inside and on the top of the test box;

[0007] The test components include:

[0008] A counterweight frame, which is used to drive a counterweight block to compress the spring being tested;

[0009] Guide wheels, in conjunction with guide rails, guide the counterweight frame.

[0010] Preferably, the guide wheel passes through the side of the counterweight frame and is rotatably connected to the counterweight frame. The guide rail is fixed to the inner wall of the test chamber, and the guide wheel is installed inside the guide rail. A counterweight block is placed inside the counterweight frame, and a hole is opened in the center of the counterweight frame. An openable door is provided on the front of the counterweight frame. After opening the door on the front of the counterweight frame, a counterweight block of equal weight is placed as needed. Under the guidance of the guide wheel and the guide rail, the counterweight frame can only move vertically up and down, avoiding the counterweight frame from tilting due to the spring being tested bouncing, which could cause an impact to the test chamber and damage it. The hole in the center of the counterweight frame allows the guide column to pass through, ensuring that the counterweight frame can apply pressure to the spring being tested for testing.

[0011] Preferably, the lifting assembly includes a fixing frame, the bottom of which is fixed to the top of the test box. A winding reel is rotatably mounted on the right side of the fixing frame, and a rocker arm is fixed to the right side of the winding reel. A steel wire rope is wound on the winding reel, one end of which is fixed to the winding reel, and the other end of which passes through the top of the test box and is fixed to the top of the counterweight frame. A rotating rod is fixed to the left side of the winding reel, passing through the fixing frame and rotatably connected to it. The rotating rod also passes through a ratchet and is fixed to it. A fixing plate is fixed to the left side of the fixing frame, and a connecting spring is fixed to the bottom of the fixing plate. One end of the counterweight is fixed to the top of the pawl, and a control rod is fixed to the top of the pawl. The control rod passes through the fixed plate and is slidably connected to the fixed plate. By engaging the ratchet and the pawl, the winding reel cannot rotate to release the wire rope; it can only rotate in the opposite direction to wind up the wire rope. The operator can rotate the rocker arm to drive the winding reel to wind up the wire rope and control the counterweight frame to move upward, which is convenient for operation. During testing, the operator only needs to pull the control rod upward, and the control rod moves the pawl upward, causing the pawl to separate from the ratchet, thereby releasing the restriction on the winding reel. The counterweight frame can then move downward under the action of gravity.

[0012] Compared with the prior art, this utility model provides a car suspension spring testing device with a protective structure, which has the following beneficial effects:

[0013] 1. This automotive suspension spring testing device with a protective structure, through the set testing components, places counterweights of equal weight in the counterweight frame as needed. During the test, under the guidance of the guide wheels and guide rails, it ensures that the counterweight frame can only move vertically up and down, avoiding the counterweight frame from tilting due to the spring being tested bouncing, which could cause an impact to the test box and damage the test box.

[0014] 2. This automotive suspension spring testing device with a protective structure uses a lifting assembly that engages with a ratchet and pawl to prevent the winding wheel from rotating to release the wire rope. Instead, it rotates in the opposite direction to wind up the wire rope. Operators can rotate the rocker arm to drive the winding wheel to wind up the wire rope and control the counterweight frame to move upward, making operation convenient. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall front view of the present invention;

[0016] Figure 2 This is a front view of the cross-sectional structure of the test box of this utility model;

[0017] Figure 3 This is a schematic diagram of the connection structure between the test component and the lifting component of this utility model;

[0018] Figure 4 This is a cross-sectional structural diagram of the counterweight frame of this utility model;

[0019] Figure 5 This is a schematic diagram of the lifting component structure of this utility model.

[0020] In the diagram: 1. Test box; 2. Spring under test; 3. Test assembly; 31. Counterweight frame; 32. Counterweight block; 33. Guide wheel; 34. Guide rail; 4. Lifting assembly; 41. Fixing frame; 42. Winding reel; 43. Rocker arm; 44. Wire rope; 45. Rotating rod; 46. Ratchet; 47. Fixing plate; 48. Connecting spring; 49. Pawl; 410. Control lever; 5. Infrared rangefinder; 6. Guide column. Detailed Implementation

[0021] like Figures 1-5 As shown, this utility model provides a technical solution: a car suspension spring testing device with a protective structure, including a test box 1 and a spring 2 to be tested. An infrared rangefinder 5 is installed on the top of the test box 1. A guide column 6 is fixed inside the test box 1. A test component 3 is installed inside the test box 1. A lifting component 4 is installed inside and on the top of the test box 1. The test component 3 includes: a counterweight frame 31, a counterweight block 32, a guide wheel 33, and a guide rail 34.

[0022] The guide wheel 33 passes through the side of the counterweight frame 31 and is rotatably connected to the counterweight frame 31. The guide rail 34 is fixed on the inner wall of the test chamber 1, and the guide wheel 33 is installed inside the guide rail 34. The counterweight block 32 is placed inside the counterweight frame 31. A hole is opened in the center of the counterweight frame 31. An openable door is provided on the front of the counterweight frame 31. After opening the door on the front of the counterweight frame 31, a counterweight block 32 of equal weight is placed as needed. Under the guidance of the guide wheel 33 and the guide rail 34, the counterweight frame 31 can only move vertically up and down, so as to avoid the counterweight frame 31 tilting due to the spring 2 being tested bouncing up, causing an impact on the test chamber 1 and damaging the test chamber 1. The hole opened in the center of the counterweight frame 31 allows the guide column 6 to pass through, ensuring that the counterweight frame 31 can apply pressure to the spring 2 being tested for testing.

[0023] The lifting assembly 4 includes a fixed frame 41, the bottom of which is fixed to the top of the test chamber 1. A winding reel 42 is rotatably mounted on the right side of the fixed frame 41, and a rocker arm 43 is fixed to the right side of the winding reel 42. A steel wire rope 44 is wound on the winding reel 42, one end of which is fixed to the winding reel 42, and the other end of which passes through the top of the test chamber 1 and is fixed to the top of the counterweight frame 31. A rotating rod 45 is fixed to the left side of the winding reel 42, passing through the fixed frame 41 and rotatably connected to it. The rotating rod 45 also passes through a ratchet 46 and is fixed to it. A fixed plate 47 is fixed to the left side of the fixed frame 41, and a connecting spring 48 is fixed to the bottom of the fixed plate 47. The end of the connecting spring 48 away from the fixed plate 47 is fixed to... At the top of the pawl 49, a control lever 410 is fixed. The control lever 410 passes through the fixed plate 47 and is slidably connected to the fixed plate 47. The pawl 49 engages with the ratchet 46, preventing the winding reel 42 from rotating to release the wire rope 44. Instead, it rotates in the opposite direction to wind up the wire rope 44. The operator can rotate the rocker arm 43 to drive the winding reel 42 to wind up the wire rope 44. The counterweight frame 31 moves upward for easy operation. During testing, the operator only needs to pull the control lever 410 upward. The control lever 410 moves the pawl 49 upward, causing the pawl 49 to separate from the ratchet 46, thereby releasing the restriction on the winding reel 42. The counterweight frame 31 can then move downward under the action of gravity.

[0024] In this invention, during use, the operator opens the test box 1, places the spring 2 to be tested on the guide post 6, and, according to the test requirements, opens the counterweight frame 31 to place the corresponding weight of the counterweight block 32. After closing the test box 1, the operator manually pulls the control lever 410 upward, causing the control lever 410 to move upward with the pawl 49, thus separating the pawl 49 from the ratchet 46 and releasing the restriction on the winding wheel 42. The counterweight frame 31 can then move downward under the action of gravity. Under the action of the guide wheel 33 and the guide rail 34, the counterweight frame 31 moves vertically downward to compress the spring 2 to be tested. The height fluctuation difference of the counterweight frame 31 is detected by the infrared rangefinder 5 to achieve the test.

[0025] When it is necessary to control the counterweight frame 31 to reset, simply turn the rocker arm 43 to control the winding wheel 42 to wind up the wire rope 44, which will pull the counterweight frame 31 to move upward and reset. Then, open the test box 1 and take out the test spring 2.

[0026] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A kind of automobile suspension spring testing device with protective structure, including test box (1) and the spring (2) being tested, the top of the test box (1) is provided with infrared range finder (5), it is characterized by: The inside of the test box (1) is fixed with a guide column (6), the inside of the test box (1) is provided with a test assembly (3), the inside and the top of the test box (1) are provided with a lifting assembly (4); The test assembly (3) comprises: A counterweight frame (31) for driving a counterweight (32) to press the tested spring (2); A guide wheel (33) cooperating with a guide rail (34) to guide the counterweight frame (31).

2. The automobile suspension spring testing device with a protection structure according to claim 1, characterized in that: The guide wheel (33) penetrates the side surface of the counterweight frame (31) and is rotationally connected with the counterweight frame (31), the guide rail (34) is fixed on the inner wall of the test box (1), the guide wheel (33) is installed in the guide rail (34), the counterweight (32) is placed in the inside of the counterweight frame (31), and a hole is formed in the center of the counterweight frame (31).

3. The automobile suspension spring testing device with a protection structure according to claim 1, characterized in that: The lifting assembly (4) comprises a fixed frame (41), the bottom of the fixed frame (41) is fixed on the top of the test box (1), a winding wheel (42) is rotationally installed on the right side of the fixed frame (41), and a rocker (43) is fixed on the right side of the winding wheel (42).

4. The automobile suspension spring testing device with a protection structure according to claim 3, characterized in that: A steel wire rope (44) is wound on the winding wheel (42), one end of the steel wire rope (44) is fixed on the winding wheel (42), the other end of the steel wire rope (44) penetrates the top of the test box (1) and is fixed on the top of the counterweight frame (31), and a rotating rod (45) is fixed on the left side of the winding wheel (42).

5. The device for testing the automobile suspension spring with the protection structure according to claim 4, characterized in that: The rotating rod (45) penetrates the fixed frame (41) and is rotationally connected with the fixed frame (41), the rotating rod (45) penetrates a ratchet wheel (46) and is fixed with the ratchet wheel (46), a fixed plate (47) is fixed on the left side of the fixed frame (41), a connecting spring (48) is fixed on the bottom of the fixed plate (47), and one end of the connecting spring (48) away from the fixed plate (47) is fixed on the top of a ratchet claw (49).

6. The automobile suspension spring testing device with a protection structure according to claim 5, characterized in that: A control rod (410) is fixed on the top of the ratchet claw (49), the control rod (410) penetrates the fixed plate (47) and is slidably connected with the fixed plate (47).

Images