A device for setting the attitude of a vehicle suspension spring before a high pressure test

Abstract

The utility model discloses a kind of equipment for adjusting the posture of automobile suspension spring before strong pressure test, it is related to the technical field for adjusting the posture of automobile suspension spring before strong pressure test, including equipment main body, strong pressure testing mechanism and adjusting mechanism, the equipment main body is mechanical arm, and there is strong pressure testing mechanism and adjusting mechanism with equipment main body cooperation and carry out the strong pressure test of suspension spring, pressure sensor is arranged in the strong pressure testing mechanism, track is arranged in the adjusting mechanism, sliding block is slidably connected on track, sliding block is driven by oil cylinder one, oil cylinder two is fixedly connected on sliding block, push rod is connected on oil cylinder two. The utility model is by starting oil cylinder one, sliding block is pushed on track, sleeve is pushed out, a group of suspension spring clamped by mechanical arm is preliminarily fixed between detection mechanism and adjusting mechanism, preliminarily fixed between sleeve and pressure sensor, waits to be adjusted posture after strong pressure detection, entire process is automated and does not need manual intervention.

Description

Technical Field

[0001] This utility model relates to the field of adjusting the posture of automotive suspension springs before a high-pressure test, and specifically to a device for adjusting the posture of automotive suspension springs before a high-pressure test. Background Technology

[0002] Suspension springs are high-strength springs used in automobiles. They are generally made of high-strength metals such as cast iron, which are extruded and cut to form suspension springs. However, each suspension spring must be tested for its pressure index before leaving the factory to ensure its service life. The high-pressure test of suspension springs is often not calibrated, resulting in deviations in the pressure index and degree, which affects the efficiency of the test.

[0003] Existing high-pressure tests on suspension springs lack end-point calibration, affecting test accuracy. For example, a spring performance testing device disclosed in Chinese Publication No. CN212748283U includes a high-pressure mechanism and a support mechanism. The support mechanism includes a support container containing a spring carrier and a temperature monitor. The container has a heat exchange medium channel connected to a temperature control source. The high-pressure mechanism includes a lifting drive frame and a lifting platform. The lifting platform has a pressure rod, a pressure sensor, and a stroke monitoring sensor. The bottom end of the pressure rod has a pressing end for passing through an opening and perpendicularly opposite to the spring carrier. This invention enables spring performance testing in different temperature environments, meeting the testing requirements for the three elements of temperature, pressure, and stroke of specific springs, resulting in a more comprehensive and reliable evaluation of the springs. The support mechanism achieves efficient temperature control of the testing environment and meets temperature stability requirements, improving testing accuracy. The overall design is simple and ingenious, and the equipment cost is controlled, making it suitable for widespread application. However, this testing equipment cannot calibrate the ends of the springs to ensure that the ends of the springs being tested are aligned, which affects the accuracy of the test.

[0004] Therefore, it is necessary to invent a device for adjusting the posture of automotive suspension springs before high-pressure testing to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a device for adjusting the posture of automotive suspension springs before a high-pressure test, in order to solve the problem that the ends of the suspension springs are not calibrated during the high-pressure test of the suspension springs, resulting in deviations in the test degree.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A device for adjusting the posture of automotive suspension springs before a high-pressure test includes a main body, a high-pressure testing mechanism, and an adjustment mechanism. The main body is a robotic arm. The high-pressure testing mechanism and the adjustment mechanism cooperate with the main body to perform the high-pressure test on the suspension springs. The high-pressure testing mechanism is equipped with a pressure sensor. The adjustment mechanism is equipped with a track, on which a slider is slidably connected. The slider is driven by a hydraulic cylinder. A second hydraulic cylinder is fixedly connected to the slider. A push rod is connected to the second hydraulic cylinder. The push rod extends into a sleeve and connects to a rotating rod. A limit block and a placement end face are fixedly connected to the rotating rod.

[0008] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0009] 1. This utility model uses a hydraulic cylinder to push a slider on a track, which pushes out a sleeve and initially fixes a set of suspension springs held by a robotic arm between the detection mechanism and the adjustment mechanism, and between the sleeve and the pressure sensor. After the posture is adjusted, a strong pressure test is performed. The whole process is automated and requires no manual intervention.

[0010] 2. This utility model uses the second hydraulic cylinder to continue pushing the push rod out of the sleeve, pushing the rotating rod while it rotates along the wave-shaped groove. During the rotation, the end of the initially fixed suspension spring is rotated to contact the placement end face. Multiple rotations bring the end of the suspension spring tightly against the placement end face, and it is reset to the initial position (the position corresponding to the reference piece) to wait for strong pressure testing, ensuring the accuracy of the measured degree. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0012] Figure 2 This is a three-dimensional structural diagram of the hydraulic cylinder 2 of this utility model;

[0013] Figure 3 This is a three-dimensional structural diagram of the pressure sensor of this utility model;

[0014] Figure 4 This is a three-dimensional structural diagram of the rotating rod of this utility model;

[0015] Figure 5 This is a three-dimensional structural diagram of the wave-shaped groove of this utility model;

[0016] Figure 6 This is a three-dimensional sectional view of the sleeve of this utility model;

[0017] Figure 7 This is a three-dimensional exploded view of the sleeve of this utility model;

[0018] Figure 8 for Figure 6 Enlarged structural diagram at point A in the middle.

[0019] Explanation of reference numerals in the attached drawings: 1. Main body of the equipment; 2. High-pressure testing mechanism; 201. Pressure sensor; 3. Adjustment mechanism; 301. Track; 302. Slider; 303. Hydraulic cylinder one; 304. Hydraulic cylinder two; 305. Push rod; 306. Sleeve; 3061. Reference piece; 307. Wavy groove; 308. Rotating rod; 309. Spring; 310. Limiting block; 311. Placement end face. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0021] This utility model provides, for example Figures 1-8 The device shown is for adjusting the posture of a car suspension spring before a high-pressure test. It includes a main body 1, a high-pressure testing mechanism 2, and an adjustment mechanism 3. The main body 1 is a robotic arm. The high-pressure testing mechanism 2 and the adjustment mechanism 3 cooperate with the main body 1 to perform the high-pressure test on the suspension spring. A pressure sensor 201 is installed in the high-pressure testing mechanism 2. A track 301 is installed in the adjustment mechanism 3. A slider 302 is slidably connected to the track 301. The slider 302 is driven by a first hydraulic cylinder 303. A second hydraulic cylinder 304 is fixedly connected to the slider 302. A push rod 305 is connected to the second hydraulic cylinder 304. The push rod 305 extends into a sleeve 306 and is connected to a rotating rod 308. A limit block 310 and a placement end face 311 are fixedly connected to the rotating rod 308. There are two pressure sensors 201. The positions of the two pressure sensors 201 correspond to the positions of the two sleeves 306 and are at the same height.

[0022] When the hydraulic cylinder 303 is activated, the slider 302 is pushed out, and the suspension spring to be tested is initially clamped between the sleeve 306 and the pressure sensor 201, and is then subjected to strong pressure testing after the angle is adjusted.

[0023] The limiting block 310 extends into the wavy groove 307 opened on the inner side of the sleeve 306, and a spring 309 is installed at the inner end of the wavy groove 307. The spring 309 is connected between the limiting block 310 and the wavy groove 307. A reference piece 3061 is installed on the sleeve 306. The position of the reference piece 3061 is longitudinally mirror-symmetrical to the position of the placement end face 311. The placement end face 311 is in contact with the end of the suspension spring to be tested under high pressure, and its size is larger than the diameter of the suspension spring to be tested.

[0024] The end of the suspension spring after initial clamping may not be in contact with the placement end face 311. By continuously pushing the hydraulic cylinder 304 to push the rotating rod 308 and rotate it along the direction of the wave groove 307, the end of the suspension spring is rotated to contact the placement end face 311. The placement end face 311 is then reset to the position corresponding to the reference piece 3061 and awaits testing.

[0025] The main body of the equipment 1 consists of multiple robotic arms. The robotic arms continuously rotate and grasp, placing the suspension spring to be tested between the high-pressure testing mechanism 2 and the adjustment mechanism 3. The high-pressure testing mechanism 2 and the adjustment mechanism 3 are positioned opposite each other, and the distance between the high-pressure testing mechanism 2 and the adjustment mechanism 3 is adapted to the length of the suspension spring to be tested.

[0026] Two (or a set of) suspension springs correspond to a set of pressure sensors 201, and a set of readings can be obtained simultaneously during testing.

[0027] The working principle of this utility model is as follows: The suspension spring to be tested under high pressure is picked up from the cutting process production line by the robot arm of the main body of the equipment 1 and placed between the high pressure testing mechanism 2 and the adjustment mechanism 3. The gripping part of the robot arm has two (a set) suspension springs in two positions. The suspension spring is placed between the high pressure testing mechanism 2 and the adjustment mechanism 3. The end of the suspension spring may not be in contact with the placement end face 311. The hydraulic cylinder 303 is activated to initially grip the spring. It needs to be rotated at a certain angle to place the end of the suspension spring on the placement end face 311.

[0028] When hydraulic cylinder 303 initially clamps the suspension spring, sleeve 306 contacts the suspension spring, and rotating rod 308 extends into the suspension spring. When hydraulic cylinder 304 is activated, it will push push rod 305 to push rotating rod 308. Under the constraint of track 301 and wave groove 307, rotating rod 308 will rotate a certain angle, placing the end of suspension spring on placement end face 311, and then being reset by spring 309, returning the end to the initial position to be tested (the position corresponding to reference piece 3061).

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for adjusting the posture of automotive suspension springs before a high-pressure test, characterized in that: The device includes a main body (1), which is a robotic arm. The main body (1) cooperates with the main body (1) to perform high-pressure testing of the suspension spring. There is a high-pressure testing mechanism (2) and an adjustment mechanism (3). The high-pressure testing mechanism (2) is equipped with a pressure sensor (201). The adjustment mechanism (3) is equipped with a track (301). A slider (302) is slidably connected on the track (301). The slider (302) is driven by a first hydraulic cylinder (303). A second hydraulic cylinder (304) is fixedly connected on the slider (302). A push rod (305) is connected on the second hydraulic cylinder (304). The push rod (305) extends into a sleeve (306) and is connected to a rotating rod (308). A limit block (310) and a placement end face (311) are fixedly connected on the rotating rod (308).

2. The device for adjusting the posture of automotive suspension springs before a high-pressure test according to claim 1, characterized in that: The limiting block (310) extends into the wavy groove (307) opened on the inner side of the sleeve (306), and a spring (309) is installed at the inner end of the wavy groove (307), and the spring (309) is connected between the limiting block (310) and the wavy groove (307).

3. The device for adjusting the posture of automotive suspension springs before a high-pressure test according to claim 2, characterized in that: A reference piece (3061) is mounted on the sleeve (306), and the position of the reference piece (3061) is longitudinally mirror-symmetrical to the position of the placement end face (311).

4. The device for adjusting the posture of automotive suspension springs before a high-pressure test according to claim 3, characterized in that: The placement end face (311) is in contact with the end of the suspension spring to be tested under high pressure, and its size is larger than the diameter of the suspension spring to be tested.

5. The device for adjusting the posture of automotive suspension springs before a high-pressure test according to claim 1, characterized in that: There are two pressure sensors (201), and the positions of the two pressure sensors (201) correspond to the positions of the two sleeves (306) and are at the same height.

6. The device for adjusting the posture of automotive suspension springs before a high-pressure test according to claim 1, characterized in that: The main body of the equipment (1) consists of multiple robotic arms. The robotic arms continuously rotate and grab, placing the suspension spring to be tested between the high-pressure testing mechanism (2) and the adjustment mechanism (3).

7. The device for adjusting the posture of automotive suspension springs before a high-pressure test according to claim 6, characterized in that: The high-pressure testing mechanism (2) and the adjustment mechanism (3) are positioned opposite each other, and the distance between the high-pressure testing mechanism (2) and the adjustment mechanism (3) is adapted to the length of the suspension spring to be tested.

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