Force analysis device and testing method for spring end ring of mcfarland shock absorber

Abstract

The application discloses a force analysis device for a spring end ring of a McPherson shock absorber and belongs to the technical field of analysis devices, which comprises a mounting plate, a fixed block is fixed to the middle of the upper surface of the mounting plate, a fixed ring is fixed to the bottom of the upper surface of the mounting plate outside the outer ring surface of the fixed block, a plurality of micro force sensors are installed on the fixed ring in a spiral direction at intervals, a multistage hydraulic cylinder is installed on the middle of the upper surface of the fixed plate, the output end of the multistage hydraulic cylinder penetrates through the corresponding position of the fixed plate and is fixed with a moving disc, a pressing ring is installed on the edge part of the lower surface of the moving disc, and a display screen is installed at one end of the mounting plate, wherein the device has the beneficial effects that the information detected by different micro force sensors can be displayed during the test, the forces of different parts of the spring end ring of the McPherson shock absorber can be intuitively displayed and compared, and the device is convenient for providing support for bearing shaft shell strength checking.

Description

Technical Field

[0001] This invention relates to the field of analytical device technology, specifically to a force analysis device and testing method for the spring end ring of a MacPherson shock absorber. Background Technology

[0002] Most passenger cars use MacPherson strut shock absorbers for their front shock absorbers. These shock absorbers have a planar bearing at the top. In case reports, 60% of the abnormal noises in the shock absorbers come from the upper cover bearing. This is mainly manifested when the car is turning, as the change in force on the upper cover of the shock absorber causes abnormal noise from the bearing.

[0003] Currently, major domestic suppliers, such as foreign companies like Mubel, have only theoretically analyzed solutions to this problem. They lack subsequent verification methods and experimental equipment, resulting in insufficient data reliability. Furthermore, domestic companies currently lack both analytical and testing capabilities and primarily rely on pressure-sensitive paper for testing.

[0004] When using pressure-sensitive paper to test the force on various parts of the spring end ring of a MacPherson shock absorber, the magnitude of the force is judged by the color intensity. There is no numerical display during the test, so it is not possible to intuitively show and compare the force on various parts of the spring end ring of the MacPherson shock absorber, and thus it cannot provide support for the strength verification of the bearing housing.

[0005] Therefore, we propose a stress analysis device and testing method for the spring end ring of a MacPherson shock absorber. Summary of the Invention

[0006] In view of the problems existing in the above and / or existing MacPherson shock absorber spring end ring force analysis devices and test methods, the present invention is proposed.

[0007] Therefore, the purpose of this invention is to provide a force analysis device and testing method for the spring end ring of a MacPherson shock absorber. By improving the existing technology, it can solve the problems mentioned above, such as the lack of numerical display during testing, the inability to intuitively show and compare the forces acting on different parts of the spring end ring of the MacPherson shock absorber, and the inability to provide support for the strength verification of bearing housings.

[0008] To address the aforementioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0009] A force analysis device for the spring end ring of a MacPherson shock absorber includes a mounting plate. A fixing block is fixed to the middle of the upper surface of the mounting plate. A fixing ring is fixed to the bottom of the upper surface of the mounting plate, located outside the outer ring surface of the fixing block. Several miniature force sensors are installed at intervals along the spiral direction on the fixing ring. Fixing rods are fixed to the four corners of the upper surface of the mounting plate. A fixing plate is fixed between the upper surfaces of the fixing rods. A multi-stage hydraulic cylinder is installed in the middle of the upper surface of the fixing plate. The output end of the multi-stage hydraulic cylinder extends through to the lower part of the corresponding position on the fixing plate and is fixed to a moving disk. A pressure ring is installed on the edge of the lower surface of the moving disk. A display screen is installed at one end of the mounting plate.

[0010] As a preferred embodiment of the force analysis device for the spring end ring of the MacPherson shock absorber described in this invention, wherein: an intelligent signal transmitter is installed in the middle of the lower surface of the mounting plate, the intelligent signal transmitter is electrically connected to a miniature force sensor, the intelligent signal transmitter is electrically connected to a display screen, connecting blocks are fixed around the perimeter of the lower edge of the moving disk, the lower end surface of the connecting blocks is fixedly connected to the corresponding position on the upper surface of the pressure ring, the connecting blocks can fix and limit the pressure ring, the inner ring surface of the pressure ring and the outer ring surface of the fixing block are matched, and the horizontal plane of the upper surface of the miniature force sensor is located above the horizontal plane of the upper surface of the fixing ring.

[0011] As a preferred embodiment of the force analysis device for the spring end ring of the MacPherson shock absorber described in this invention, the miniature force sensor is in a vertical position, a limiting ring is installed on the outer side of the outer ring surface of the miniature force sensor, the limiting ring is in a vertical position, the outer ring surface of the miniature force sensor and the inner ring surface of the limiting ring are in a matching fit, the limiting ring can limit the miniature force sensor, and a matching first retention groove is opened on the fixed ring corresponding to the limiting ring.

[0012] As a preferred embodiment of the force analysis device for the spring end ring of the MacPherson shock absorber described in this invention, a second placement groove is provided on the fixed ring on the side of the micro force sensor away from the fixed block. A connecting line for electrical connection is fixedly connected to the middle of the side of the micro force sensor away from the fixed block. The connecting line passes through the corresponding position of the limiting ring and the mounting plate. The second placement groove helps to place the connecting line.

[0013] As a preferred embodiment of the force analysis device for the spring end ring of the MacPherson shock absorber described in this invention, wherein: the end of the connecting line away from the miniature force sensor is connected to the corresponding position on the intelligent signal transmitter, the connecting line is electrically connected to the intelligent signal transmitter, support rods are fixed at the four corners of the lower surface of the mounting plate, the support rods help to support and limit the mounting plate, and a support plate is fixed together between the lower surfaces of the support rods.

[0014] As a preferred embodiment of the force analysis device for the spring end ring of the MacPherson shock absorber described in this invention, a first limiting block is fixed in the middle of the lower surface of the movable disk. The first limiting block is in a vertical state. A first limiting groove in a vertical state is opened in the middle of the fixed block. The upper end of the first limiting groove penetrates the upper surface of the fixed block. The first limiting block and the first limiting groove are in a matching and fitting state. The first limiting groove helps to limit the first limiting block.

[0015] As a preferred embodiment of the force analysis device for the spring end ring of the MacPherson shock absorber described in this invention, wherein: a second limiting block is fixed around the outer ring surface of the first limiting block, the second limiting block is in a vertical state, and a matching second limiting groove is opened on the fixing block corresponding to the second limiting block, the second limiting groove is in a vertical state, and the upper end of the second limiting groove penetrates the upper surface of the corresponding position of the fixing block, the second limiting groove helps to limit the second limiting block.

[0016] As a preferred embodiment of the force analysis device for the spring end ring of the MacPherson shock absorber described in this invention, the support rod is in a vertical state, the support plate is in a horizontal state, support legs are fixed at the four corners of the lower surface of the support plate, the mounting plate is in a horizontal state, a support block is fixed at the end surface of the mounting plate near the display screen, the lower surface of the display screen is installed with the upper surface of the support block, and the support block can support and limit the display screen.

[0017] The test method for the force analysis device of the MacPherson shock absorber spring end ring in this invention includes the following steps:

[0018] Step 1: Place the MacPherson shock absorber spring to be tested on the outside of the fixed block, so that the end ring of the MacPherson shock absorber spring is in contact with the miniature force sensor arranged in the helical direction.

[0019] Step 2: The output end of the multi-stage hydraulic cylinder pushes the pressure ring downward through the moving disc. When the pressure ring comes into contact with the top of the MacPherson shock absorber spring, the pressure ring will press the MacPherson shock absorber spring.

[0020] Step 3: When the MacPherson shock absorber spring is pressed, it applies pressure to the miniature force sensor. The miniature force sensor at different positions will test the pressure applied at different positions on the MacPherson shock absorber spring.

[0021] Step 4: The miniature force sensor transmits the measured data to the intelligent signal transmitter via a connecting line. The intelligent signal transmitter processes the received signal and transmits it to the display screen for further comparison and analysis.

[0022] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0023] 1. In this invention, after the pressure ring presses the MacPherson shock absorber spring, the end ring at the bottom of the MacPherson shock absorber spring will apply pressure to the miniature force sensor. Different miniature force sensors can detect the pressure applied at different positions of the bottom end ring of the MacPherson shock absorber spring. During use and testing, the information detected by different miniature force sensors can be displayed, which helps to intuitively display and compare the forces acting on each part of the end ring of the MacPherson shock absorber spring, and facilitates support for the strength verification of the bearing housing.

[0024] 2. In this invention, the limiting ring can fix and limit the miniature force sensor, which helps to use the miniature force sensor stably. The fixing ring can limit the limiting ring through the first retention groove, which facilitates the stable use of the limiting ring. The pressure information signal detected by the miniature force sensor will be transmitted to the intelligent signal transmitter through the connection line. The intelligent signal transmitter can process the received signal information and transmit the processed signal information to the display screen connected to the phase.

[0025] 3. In this invention, the fixing block can limit the second limiting block through the second limiting groove, and the fixing block can limit the first limiting block through the first limiting groove. The fixing block can limit the moving disk through the first limiting groove and the second limiting groove, and the first limiting block and the second limiting block, so as to facilitate stable movement of the moving disk. The support block can support and fix the display screen, so as to facilitate stable use of the display screen. The display screen can display the signal information transmitted after processing by the intelligent signal transmitter. The display screen can conveniently display the information detected by different miniature force sensors. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the fixing block structure of the present invention;

[0028] Figure 3 This is a schematic diagram of the fixing ring structure of the present invention;

[0029] Figure 4 This is a schematic diagram of the pressure ring structure of the present invention;

[0030] Figure 5 This is a schematic diagram of the connecting block structure of the present invention.

[0031] In the diagram: 1. Mounting plate; 2. Fixing ring; 3. First retaining groove; 4. Second retaining groove; 5. Limiting ring; 6. Miniature force sensor; 7. Fixing block; 8. First limiting groove; 9. Second limiting groove; 10. First limiting block; 11. Second limiting block; 12. Moving disk; 13. Connecting block; 14. Pressure ring; 15. Multi-stage hydraulic cylinder; 16. Fixing rod; 17. Fixing plate; 18. Intelligent signal transmitter; 19. Support block; 20. Display screen; 21. Support rod; 22. Support plate; 23. Support leg; 24. Connecting wiring. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0033] This invention provides a force analysis device and testing method for the spring end ring of a MacPherson shock absorber. It has the advantages of being able to display the information detected by different miniature force sensors during testing, which helps to intuitively display and compare the forces acting on each part of the spring end ring of the MacPherson shock absorber, and facilitates support for the strength verification of bearing housings.

[0034] Please see Figure 1-5 The force analysis device for the spring end ring of the MacPherson shock absorber in this invention includes a mounting plate 1. A fixing block 7 is fixed to the middle of the upper surface of the mounting plate 1. A fixing ring 2 is fixed to the bottom of the upper surface of the mounting plate 1 located outside the outer ring surface of the fixing block 7. Several miniature force sensors 6 are installed at intervals along the spiral direction on the fixing ring 2. Fixing rods 16 are fixed to the four corners of the upper surface of the mounting plate 1. A fixing plate 17 is fixed between the upper surfaces of the fixing rods 16. A multi-stage hydraulic cylinder 15 is installed in the middle of the upper surface of the fixing plate 17. The output end of the multi-stage hydraulic cylinder 15 extends through to the lower part of the corresponding position on the fixing plate 17 and is fixed with a moving disk 12. A pressure ring 14 is installed on the edge of the lower surface of the movable disk 12, and a display screen 20 is installed on one end of the mounting plate 1. After the pressure ring 14 presses the MacPherson shock absorber spring, the end ring at the bottom of the MacPherson shock absorber spring will apply pressure to the miniature force sensor 6. Different miniature force sensors 6 can detect the pressure applied at different positions of the end ring at the bottom of the MacPherson shock absorber spring. During use and testing, the information detected by different miniature force sensors 6 can be displayed, which helps to intuitively display and compare the forces acting on each part of the end ring of the MacPherson shock absorber spring, and facilitates support for the strength verification of the bearing housing.

[0035] A smart signal transmitter 18 is installed in the middle of the lower surface of the mounting plate 1. The smart signal transmitter 18 is electrically connected to the miniature force sensor 6 and the display screen 20. Connecting blocks 13 are fixed around the perimeter of the lower surface of the moving disk 12. The lower surface of each connecting block 13 is fixedly connected to the corresponding position on the upper surface of the pressure ring 14. The connecting blocks 13 can fix and limit the pressure ring 14. The inner ring surface of the pressure ring 14 is connected to the outer ring of the fixing block 7. The surfaces are matched, and the horizontal plane of the upper surface of the miniature force sensor 6 is located above the horizontal plane of the upper surface of the fixing ring 2. The miniature force sensor 6 is in a vertical state, and a limiting ring 5 is installed on the outer side of the outer ring surface of the miniature force sensor 6. The limiting ring 5 is in a vertical state, and the outer ring surface of the miniature force sensor 6 and the inner ring surface of the limiting ring 5 are matched and fitted. The limiting ring 5 can limit the miniature force sensor 6. The fixing ring 2 has a matching first retention groove 3 corresponding to the limiting ring 5.

[0036] A second placement groove 4 is provided on the side of the miniature force sensor 6 away from the fixed block 7 on the fixed ring 2. A connecting line 24 is fixedly connected to the middle of the side of the miniature force sensor 6 away from the fixed block 7. The connecting line 24 passes through the limiting ring 5 and the corresponding position on the mounting plate 1. The second placement groove 4 helps to place the connecting line 24. The end of the connecting line 24 away from the miniature force sensor 6 is connected to the corresponding position on the intelligent signal transmitter 18. The connecting line 24 and the intelligent signal transmitter 18 are electrically connected. Support rods 21 are fixed at the four corners of the lower surface of the mounting plate 1. The support rods 21 help to support and limit the mounting plate 1. A support plate 22 is fixed together between the lower surfaces of the support rods 21.

[0037] A first limiting block 10 is fixed to the center of the lower surface of the movable disk 12. The first limiting block 10 is in a vertical position. A first limiting groove 8, in a vertical position, is opened in the center of the fixed block 7. The upper end of the first limiting groove 8 penetrates the upper surface of the fixed block 7. The first limiting block 10 and the first limiting groove 8 are in a matching and fitting state. The first limiting groove 8 helps to limit the first limiting block 10. Second limiting blocks 11 are fixed around the outer ring surface of the first limiting block 10. The second limiting blocks 11 are in a vertical position. A matching second limiting block 11 is opened on the fixed block 7. The second limiting groove 9 is vertical, and its upper end penetrates the upper surface of the corresponding position of the fixing block 7. The second limiting groove 9 helps to limit the second limiting block 11. The support rod 21 is vertical, the support plate 22 is horizontal, and support legs 23 are fixed at the four corners of the lower surface of the support plate 22. The mounting plate 1 is horizontal, and a support block 19 is fixed on the end surface of the mounting plate 1 near the display screen 20. The lower surface of the display screen 20 is installed with the upper surface of the support block 19, and the support block 19 can support and limit the display screen 20.

[0038] The test method for the force analysis device of the MacPherson shock absorber spring end ring in this invention includes the following steps:

[0039] Step 1: Place the MacPherson shock absorber spring that needs to be tested on the outside of the fixed block 7, so that the end ring of the MacPherson shock absorber spring is in contact with the miniature force sensor 6 arranged in the spiral direction.

[0040] Step 2: The output end of the multi-stage hydraulic cylinder 15 pushes the pressure ring 14 downward through the moving plate 12. When the pressure ring 14 comes into contact with the top of the MacPherson shock absorber spring, the pressure ring 14 will press the MacPherson shock absorber spring.

[0041] Step 3: When the MacPherson shock absorber spring is pressed, it will apply pressure to the miniature force sensor 6. The miniature force sensor 6 at different positions will test the pressure applied to different positions on the MacPherson shock absorber spring.

[0042] Step 4: The miniature force sensor 6 transmits the tested data to the intelligent signal transmitter 18 via the connection line 24. The intelligent signal transmitter 18 processes the received signal and transmits it to the display screen 20 for display. Further comparative analysis is performed on the data displayed on the display screen 20.

[0043] The working principle of this invention is as follows: During use, the support leg 23 stably places the support plate 22 in the position to be used. The support leg 23 can support and limit the support plate 22, which helps to use the support plate 22 stably. The support plate 22 can support and limit the support rod 21, which facilitates the stable use of the support rod 21. The support rod 21 can support and limit the mounting plate 1 and the various components mounted on the mounting plate 1, which helps to use the mounting plate 1 and the various components mounted on the mounting plate 1 stably. Furthermore, the MacPherson shock absorber spring to be tested is sleeved on the outside of the fixing block 7, so that the end ring of the MacPherson shock absorber spring is in contact with the upper surface of the miniature force sensor 6. The mounting plate 1 can support and limit the fixing ring 2 and the fixing block 7, which helps to use the fixing ring 2 and the fixing block 7 stably. The fixing ring 2 and the fixing block 7 are beneficial for limiting the MacPherson shock absorber spring.

[0044] Further opening the multi-stage hydraulic cylinder 15 on the upper surface of the fixing plate 17 allows the mounting plate 1 to support and limit the fixing rod 16, facilitating stable use of the fixing rod 16. The fixing rod 16 supports and limits the fixing plate 17, facilitating stable use of the fixing plate 17. The fixing plate 17 supports and limits the multi-stage hydraulic cylinder 15, facilitating stable use of the multi-stage hydraulic cylinder 15. When the multi-stage hydraulic cylinder 15 is open, its output end can drive the moving disc 12 to move downwards in the vertical direction. When the moving disc 12 moves downwards, it can drive the first limiting block 10 to move downwards. When the first limiting block 10 moves downwards, it can drive the second limiting block 11 to move downwards, causing the first limiting block 10 to move into the first limiting groove 8 on the fixing block 7. The first limiting block 10 can drive the second limiting block 11 to move into the second limiting groove 9 on the fixing block 7.

[0045] The fixing block 7 can limit the second limiting block 11 through the second limiting groove 9, and the fixing block 7 can limit the first limiting block 10 through the first limiting groove 8. The fixing block 7 can limit the moving disk 12 through the first limiting groove 8 and the second limiting groove 9, the first limiting block 10 and the second limiting block 11, so as to facilitate the stable movement of the moving disk 12. When the moving disk 12 moves downward, it can drive the connecting block 13 to move downward. When the connecting block 13 moves downward, it can drive the pressure ring 14 to move downward. When the pressure ring 14 moves to the outside of the fixing block 7, the fixing block 7 can limit the pressure ring 14. After the lower surface of the pressure ring 14 contacts the top of the MacPherson shock absorber spring, the pressure ring 14 continues to move downward to press the MacPherson shock absorber spring. After the pressure ring 14 presses the MacPherson shock absorber spring, the end ring at the bottom of the MacPherson shock absorber spring will apply pressure to the miniature force sensor 6 inside the limiting ring 5.

[0046] The limiting ring 5 can fix and limit the miniature force sensor 6, which helps to use the miniature force sensor 6 stably. The fixing ring 2 can limit the limiting ring 5 through the first retention groove 3, which facilitates the stable use of the limiting ring 5. Different miniature force sensors 6 can detect the pressure applied at different positions of the bottom end ring of the MacPherson shock absorber spring. The pressure information signal detected by the miniature force sensor 6 will be transmitted to the intelligent signal transmitter 18 through the connecting line 24. The mounting plate 1 can fix and limit the intelligent signal transmitter 18, which helps to use the intelligent signal transmitter 18 stably. The intelligent signal transmitter 18 can process the received signal information and transmit the processed signal information to the display screen 20 connected to the phase.

[0047] Mounting plate 1 supports and fixes support block 19, which helps to use support block 19 stably. Support block 19 supports and fixes display screen 20, which facilitates stable use of display screen 20. Display screen 20 can display the signal information transmitted after processing by intelligent signal transmitter 18. Display screen 20 can conveniently display the information detected by different miniature force sensors 6. Display screen 20 helps to display the pressure at various positions of the bottom end ring of the MacPherson shock absorber spring, which is convenient for comparing the pressure at various positions of the bottom end ring of the MacPherson shock absorber spring.

[0048] During use, the information detected by different miniature force sensors 6 can be displayed during testing, which helps to intuitively show and compare the forces acting on each part of the MacPherson shock absorber spring end ring, and facilitates support for the strength verification of the bearing housing.

[0049] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the invention. In particular, as long as there is no structural conflict, the features in the disclosed embodiments can be combined with each other in any manner. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A force analysis device for the spring end ring of a MacPherson shock absorber, comprising a mounting plate (1), characterized in that, A fixing block (7) is fixed in the middle of the upper surface of the mounting plate (1). A fixing ring (2) is fixed at the bottom of the upper surface of the mounting plate (1) located outside the outer ring surface of the fixing block (7). Several miniature force sensors (6) are installed on the fixing ring (2) at intervals along the spiral direction. Fixing rods (16) are fixed at the four corners of the upper surface of the mounting plate (1). A fixing plate (17) is fixed between the upper surfaces of the fixing rods (16). A multi-stage hydraulic cylinder (15) is installed in the middle of the upper surface of the fixing plate (17). The output end of the multi-stage hydraulic cylinder (15) extends through to the lower part of the corresponding position on the fixing plate (17) and a moving disk (12) is fixed thereon. A pressure ring (14) is installed on the edge part of the lower surface of the moving disk (12). A display screen (20) is installed at one end of the mounting plate (1). The inner ring surface of the pressure ring (14) and the outer ring surface of the fixing block (7) are in a matching state, and the horizontal plane on the upper surface of the micro force sensor (6) is located above the horizontal plane on the upper surface of the fixing ring (2). A first limiting block (10) is fixed in the middle of the lower surface of the movable disk (12). The first limiting block (10) is in a vertical state. A first limiting groove (8) in a vertical state is opened in the middle of the fixed block (7). The upper end of the first limiting groove (8) penetrates the upper surface of the fixed block (7). The first limiting block (10) and the first limiting groove (8) are in a matching and fitting state.

2. The force analysis device for the spring end ring of a MacPherson shock absorber according to claim 1, characterized in that, A smart signal transmitter (18) is installed in the middle of the lower surface of the mounting plate (1). The smart signal transmitter (18) is electrically connected to the miniature force sensor (6). The smart signal transmitter (18) is electrically connected to the display screen (20). Connecting blocks (13) are fixed around the edge of the lower surface of the moving disk (12). The lower surface of the connecting blocks (13) is fixedly connected to the corresponding position on the upper surface of the pressure ring (14).

3. The force analysis device for the spring end ring of a MacPherson shock absorber according to claim 2, characterized in that, The miniature force sensor (6) is in a vertical position. A limiting ring (5) is installed on the outer side of the outer ring surface of the miniature force sensor (6). The limiting ring (5) is in a vertical position. The outer ring surface of the miniature force sensor (6) and the inner ring surface of the limiting ring (5) are in a matching and fitting state. A matching first retention groove (3) is opened on the fixing ring (2) corresponding to the limiting ring (5).

4. The force analysis device for the spring end ring of a MacPherson shock absorber according to claim 3, characterized in that, The fixing ring (2) has a second retention groove (4) on the side of the micro force sensor (6) away from the fixing block (7). The middle part of the side of the micro force sensor (6) away from the fixing block (7) is fixedly connected with a phase-connected connection line (24). The connection line (24) passes through the corresponding position on the limiting ring (5) and the mounting plate (1).

5. The force analysis device for the spring end ring of a MacPherson shock absorber according to claim 4, characterized in that, The end of the connecting line (24) away from the miniature force sensor (6) is connected to the corresponding position on the intelligent signal transmitter (18). The connecting line (24) and the intelligent signal transmitter (18) are electrically connected. Support rods (21) are fixed at the four corners of the lower surface of the mounting plate (1). Support plate (22) is fixed between the lower surfaces of the support rods (21).

6. The force analysis device for the spring end ring of a MacPherson shock absorber according to claim 1, characterized in that, The first limiting block (10) has a second limiting block (11) fixed around its outer ring surface. The second limiting block (11) is in a vertical state. The fixing block (7) has a matching second limiting groove (9) corresponding to the second limiting block (11). The second limiting groove (9) is in a vertical state, and the upper end of the second limiting groove (9) penetrates the upper surface of the fixing block (7) at the corresponding position.

7. The force analysis device for the spring end ring of a MacPherson shock absorber according to claim 5, characterized in that, The support rod (21) is vertical, the support plate (22) is horizontal, and the four corners of the lower surface of the support plate (22) are fixed with support legs (23). The mounting plate (1) is horizontal, and the end surface of the mounting plate (1) near the display screen (20) is fixed with a support block (19). The lower surface of the display screen (20) and the upper surface of the support block (19) are installed together.

8. The test method for the force analysis device of the MacPherson shock absorber spring end ring as described in any one of claims 1-7, characterized in that, The testing method includes the following steps: Step 1: Place the MacPherson shock absorber spring that needs to be tested on the outside of the fixed block (7) so that the end ring of the MacPherson shock absorber spring is in contact with the miniature force sensor (6) arranged in the spiral direction. Step 2: The output end of the multi-stage hydraulic cylinder (15) pushes the pressure ring (14) downward through the moving disc (12). When the pressure ring (14) comes into contact with the top of the MacPherson shock absorber spring, the pressure ring (14) will press the MacPherson shock absorber spring. Step 3: When the MacPherson shock absorber spring is pressed, it will apply pressure to the miniature force sensor (6). The miniature force sensor (6) at different positions will test the pressure applied at different positions on the MacPherson shock absorber spring. Step 4: The miniature force sensor (6) transmits the tested data information to the intelligent signal transmitter (18) through the connecting line (24). The intelligent signal transmitter (18) can process the received signal information and transmit it to the display screen (20) for display. Further comparative analysis is performed on the data information displayed on the display screen (20).

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