Automobile Suspension Lateral Force Spring Full-Stroke Movement Main Body Outer Diameter Detection Device and Method

Abstract

The present invention discloses a detection device for the outer diameter of the full-stroke moving body of an automotive suspension lateral force spring, which includes a circular bottom plate, an annular washer, an angle ruler, a bottom support block, a top support block, a diameter measuring scale, a scale limiting block, and a detection end. The annular washer is rotationally and concentrically fitted with the circular bottom plate, the angle ruler is fixedly and concentrically fitted with the circular bottom plate, the bottom support block is detachably connected to the annular washer, the top support block is detachably connected to the bottom support block, the diameter measuring scale is slidably fitted with the top support block, the scale limiting block is detachably connected to the top support block, and the detection end is detachably connected to one end of the diameter measuring scale. The detection device for the outer diameter of the full-stroke moving body of the automotive suspension lateral force spring has the advantages of simple structure and easy maintenance, realizes the purpose of measuring the maximum outer diameter of each turn of the lateral force spring under various working conditions, and further quickly judges whether there is movement interference between the spring and its surrounding components, thus accelerating the development progress of the automotive chassis suspension system.

Description

Technical Field

[0001] The present invention relates to the field of suspension detection equipment, and specifically to a device and a detection method for detecting the outer diameter of the main body of a lateral force spring of an automobile suspension during its full stroke movement. Background Art

[0002] At present, MacPherson struts are widely used as the front suspension of the automobile chassis in domestic and foreign vehicle factories. The layout of the MacPherson strut applies a reciprocating lateral force to the shock absorber, which will not only wear the shock absorber oil seal, but may even cause the piston rod to bend and fail. Therefore, vehicle factories have designed a lateral force spring. Different from a general cylindrical helical spring, the central axis of the lateral force spring is a curve in the shape of an S or a C, which can offset the lateral force and improve the reliability of the automobile chassis system. Since the central axis of the lateral force spring is not a straight line, it is necessary to measure the change in the outer diameter of the lateral force spring during the entire process of compression and rebound to ensure that it does not interfere with the movement of surrounding parts and affect the normal operation of the automobile chassis.

[0003] Currently, the existing measuring devices for the outer diameter of the main body of the lateral force spring of the suspension during its full stroke movement generally use infrared rays to scan the whole spring, and then obtain the digital model of the spring, and then measure the outer diameter of the main body and output the size of the outer diameter value. Although the infrared scanning device can accurately measure the change in the outer diameter of the spring during its full stroke movement, the price of the device is relatively expensive, and there are disadvantages such as harsh requirements for the use place, easy damage and difficult maintenance. There is a need for a device with low cost and easy maintenance to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a device for detecting the outer diameter of the main body of a lateral force spring of an automobile suspension during its full stroke movement to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A device for detecting the outer diameter of the main body of a lateral force spring of an automobile suspension during its full stroke movement, including a circular bottom plate, an annular washer, an angle ruler, a bottom support block, a top support block, a diameter measuring scale, a scale limiting block, and a detection end. The annular washer is rotationally and coaxially fitted with the circular bottom plate. The angle ruler is fixedly and coaxially fitted with the circular bottom plate. The bottom support block is detachably connected to the annular washer. The top support block is detachably connected to the bottom support block. The combined height of the top support block and the bottom support block is adjustable. The diameter measuring scale is slidably fitted with the top support block. The scale limiting block is detachably connected to the top support block. The detection end is detachably connected to one end of the diameter measuring scale.

[0006] Preferably, a positioning post is provided at the center of the bottom of the circular base plate. The upper part of the circular base plate is successively processed with a washer step, an angle gauge step, and a spring mounting step from outside to inside. The washer step is adapted to the annular washer, the angle gauge step is adapted to the angle gauge, and the spring mounting step is adapted to the spring to be detected. A plurality of weight-reducing round holes and a plurality of screw holes are provided on the circular base plate.

[0007] Preferably, the lower part of the bottom support block has an assembly seat. The bottom support block is detachably connected to the annular washer through the assembly seat. A trapezoidal groove is provided on the bottom support block, and a plurality of circular through holes are provided at the bottom of the trapezoidal groove. An arc surface adapted to the angle gauge is provided on one side of the assembly seat.

[0008] Preferably, the top support block includes a trapezoidal column and a chute head. A slot hole is provided on the trapezoidal column, and a chute is provided on the chute head. The trapezoidal column is adapted to the trapezoidal groove, and the trapezoidal column can slide up and down in the trapezoidal groove. The slot hole is adapted to the circular through hole.

[0009] Preferably, a slide rail is arranged at the lower part of the diameter measuring scale, and the slide rail is adapted to the chute.

[0010] Preferably, the scale limiting block is detachably connected to the top support block through a threaded connection member, and an indicating needle adapted to the diameter measuring scale is arranged on the scale limiting block.

[0011] Preferably, a connecting plate is arranged at one side of the detection end head. The detection end head is detachably connected to one end of the diameter measuring scale through the connecting plate.

[0012] A detection method for a device for detecting the outer diameter of the full stroke movement of a lateral force spring of an automobile suspension includes the following steps:

[0013] S1. Through the rotational cooperation of the circular base plate and the annular washer, the angle gauge is fixed on the circular base plate through a threaded connection member. The assembly seat at the lower part of the bottom support block is fixedly connected to the annular washer through a threaded connection member, and the top support block is vertically slid up and down in the trapezoidal groove of the bottom support block to adjust the detection height.

[0014] S2. After determining the detection height, the threaded connection member is matched with the corresponding circular through hole and slot hole to complete the fixed cooperation of the bottom support block and the top support block. The spring to be detected is installed on the spring mounting step of the circular base plate, and the spring to be detected is fixed through a threaded connection member.

[0015] S3. After the loading of the spring to be detected under the established working conditions is completed, the spring to be detected with an S-shaped or C-shaped center axis will produce eccentric bending, and the outer diameter value of the middle part of the spring to be detected will change compared with the free state. Record the angular value of the spring section on the angle gauge δ 0 and the value of the diameter measuring scale Φ 0 , adjust the matching height of the bottom support block and the top support block to ensure that the middle part of the detection end contacts the upper end section of the spring, and rotate the annular washer to δ 0 +180°;

[0016] S4. As the outer diameter of the spring increases, the detection end is pushed back. By observing the reading of the diameter measuring scale through the indicating needle of the scale limit block, the change in the outer diameter of the spring to be detected can be known. Record the value of the diameter measuring scale Φ 1 , readjust the matching height of the bottom support block and the top support block to ensure that the middle part of the detection end contacts the upper end section of the spring to be detected, and rotate the annular washer to δ 0 +360°, and record the value of the diameter measuring scale again Φ 2 , then the measurement of the outer diameter of the first coil of the spring to be detected is completed;

[0017] S5. Repeat the above steps to measure the maximum value of the main outer diameter of each coil of the spring to be detected Φ 0 , Φ 1 , …, Φn . Compare the outer diameter value with the reserved space for the spring arrangement of the vehicle chassis suspension, and it can be judged whether the spring to be detected will have movement interference with its surrounding parts during the working process.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] The cost of this device is much lower than that of the infrared scanning equipment, and it has the advantages of simple structure and easy maintenance. It realizes the purpose of measuring the maximum outer diameter of each coil of the lateral force spring under various working conditions, can efficiently measure the outer diameter size of the spring under typical working positions, and then quickly judge whether there is movement interference between the spring and its surrounding components, accelerating the development progress of the vehicle chassis suspension system. Brief Description of the Drawings

[0020] Figure 1 is a schematic structural diagram of the present invention.

[0021] Figure 2 is Figure 1 a three-dimensional structural diagram of

[0022] Figure 3 is Figure 2 a partial enlarged schematic view of the circled part in

[0023] Figure 4 a schematic structural view of the circular bottom plate of the present invention.

[0024] Figure 5 a three-dimensional structural view of the circular bottom plate of the present invention.

[0025] Figure 6 a three-dimensional structural view of the annular washer of the present invention.

[0026] Figure 7 a three-dimensional structural view of the angle gauge of the present invention.

[0027] Figure 8 a schematic structural view of the bottom support block of the present invention.

[0028] Figure 9 is Figure 8 the top view of

[0029] Figure 10 a three-dimensional structural view of the bottom support block of the present invention.

[0030] Figure 11 a schematic structural view of the top support block of the present invention.

[0031] Figure 12 is Figure 11 the right view of

[0032] Figure 13 is Figure 12 the bottom view of

[0033] Figure 14 a three-dimensional structural view of the top support block of the present invention.

[0034] Figure 15 a three-dimensional structural view of the diameter measuring scale of the present invention.

[0035] Figure 16 a three-dimensional structural view of the scale limiting block of the present invention.

[0036] Figure 17 a three-dimensional structural view of the detection end of the present invention.

[0037] In the figure: 1, circular bottom plate; 2, annular washer; 3, angle gauge; 4, bottom support block; 5, top support block; 6, diameter measuring scale; 7, scale limit block; 8, detection end; 9, positioning column; 10, washer step; 11, angle gauge step; 12, spring installation step; 13, assembly seat; 14, trapezoidal groove; 15, circular through hole; 16, arc surface; 17, trapezoidal column; 18, chute head; 19, slot hole; 20, chute; 21, slide rail; 22, indicating needle; 23, connecting plate; A, spring to be detected. Detailed implementation manner

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0039] Please refer to Figure 1-17, the present invention provides a technical solution: an outer diameter detection device for the full stroke movement of the lateral force spring of an automotive suspension, comprising a circular bottom plate 1, an annular washer 2, an angle gauge 3, a bottom support block 4, a top support block 5, a diameter measuring scale 6, a scale limiting block 7, and a detection end 8. The annular washer 2 is rotationally and concentrically fitted with the circular bottom plate 1, the angle gauge 3 is fixedly and concentrically fitted with the circular bottom plate 1, the bottom support block 4 is detachably connected to the annular washer 2, the top support block 5 is detachably connected to the bottom support block 4, the matching height of the top support block 5 and the bottom support block 4 is adjustable, the diameter measuring scale 6 is slidably fitted with the top support block 5, the scale limiting block 7 is detachably connected to the top support block 5, the detection end 8 is detachably connected to one end of the diameter measuring scale 6. The bottom center position of the circular bottom plate 1 has a positioning post 9. The upper part of the circular bottom plate 1 is successively processed with a washer step 10, an angle gauge step 11, and a spring mounting step 12 from the outside to the inside. The washer step 10 is adapted to the annular washer 2, the angle gauge step 11 is adapted to the angle gauge 3, and the spring mounting step 12 is adapted to the spring to be detected. The lower part of the bottom support block 4 has an assembly seat 13, and the bottom support block 4 is detachably connected to the annular washer 2 through the assembly seat 13. The bottom support block 4 is provided with a trapezoidal groove 14, and a number of circular through holes 15 are provided at the bottom of the trapezoidal groove 14. One side of the assembly seat 13 is provided with an arc surface 16 adapted to the angle gauge 3. The top support block 5 includes a trapezoidal column 17 and a chute head 18. A slot hole 19 is provided on the trapezoidal column 17, and a chute 20 is provided on the chute head 18. The trapezoidal column 17 is adapted to the trapezoidal groove 14, and the slot hole 19 is adapted to the circular through holes 15. The lower part of the diameter measuring scale 6 is provided with a slide rail 21, and the slide rail 21 is adapted to the chute 20. The scale limiting block 7 is detachably connected to the top support block 5 through a threaded connector. An indicating needle 22 adapted to the diameter measuring scale 6 is arranged on the scale limiting block 7. A connecting plate 23 is arranged at one side position of the detection end 8, and the detection end 8 is detachably connected to one end of the diameter measuring scale 6 through the connecting plate 23.

[0040] When using the device for detecting the outer diameter of the main body during the full stroke movement of the lateral force spring of the vehicle suspension, the circular bottom plate 1 is rotationally mated with the annular washer 2. The annular washer 2 can perform a concentric rotation action with the circular bottom plate 1 under the push of an external force. The angle ruler 3 is fixed to the circular bottom plate 1 through a threaded connection. The assembly seat 13 at the lower part of the bottom support block 4 is fixedly connected to the annular washer 2 through a threaded connection. The trapezoidal groove 14 on the bottom support block 4 is slidably mated with the trapezoidal column 17 on the top support block 5. The circular through hole 15 opened at the bottom of the trapezoidal groove 14 on the bottom support block 4 is used to fit with the slot hole 19 on the top support block 5. When assembling the bottom support block 4 and the top support block 5, the top support block 5 can be vertically slid up and down in the trapezoidal groove 14 of the bottom support block 4 to adjust the detection height. After determining the detection height, the threaded connection is mated with the corresponding circular through hole 15 and slot hole 19 to complete the fixed fit of the bottom support block 4 and the top support block 5. The spring A to be detected is installed on the spring installation step 12 on the circular bottom plate 1 and fixed through a threaded connection. After the established working condition of the spring A to be detected is loaded, the spring A to be detected with a central axis in an S-shaped or C-shaped curve will produce eccentric bending, and the numerical value of the outer diameter in the middle of the spring A to be detected will change compared with the free state. At this time, record the angle value of the spring section on the angle ruler 3 δ 0 and the value of the diameter measuring scale 6 Φ 0 , adjust the matching height of the bottom support block 4 and the top support block 5 to ensure that the middle part of the detection end 8 contacts the upper end section of the spring. Rotate the annular washer 2 to δ 0 +180°. Since the diameter measuring scale 6 is fixedly connected to the annular washer 2 through the bottom support block 4 and the top support block 5, the detection end 8 at the end of the diameter measuring scale 6 sweeps the outer diameter of the spring as the annular washer 2 rotates. As the outer diameter of the spring increases, the detection end 8 is pushed back, which causes the diameter measuring scale 6 to slide on the top support block 5. At this time, observe the reading of the diameter measuring scale 6 through the indicating needle 22 of the scale limiting block 7 to know the change situation of the outer diameter of the spring A to be detected, and record the value of the diameter measuring scale 6 Φ 1 , readjust the matching height of the bottom support block 4 and the top support block 5 to ensure that the middle part of the detection end 8 contacts the upper end section of the spring A to be detected. Rotate the annular washer 2 to δ 0 +360°, and record the value of the diameter measuring scale 6 again Φ 2, the measurement of the outer diameter of the first coil of the spring A to be detected is completed. In this way, through the rotational cooperation between the annular washer 2 and the circular base 1, the change in the outer diameter of the spring A to be detected is converted into a linear numerical change of the diameter measuring scale 6. The angular position of the diameter measuring scale 6 is recorded by the angle gauge 3, and the main body outer diameter of the spring A to be detected every 180 degrees is accurately measured. By repeating the above steps, the maximum value of the main body outer diameter of each coil of the spring A to be detected can be measured. Φ 0 , Φ 1 , …, Φn , the outer diameter value is compared with the reserved space for the arrangement of the automotive chassis suspension spring, and it can be judged whether the spring to be detected on the side will have kinematic interference with its surrounding parts during the working process.

[0041] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An outer diameter detection device for the full stroke movement of the lateral force spring of an automobile suspension, comprising a circular bottom plate (1), an annular washer (2), an angle ruler (3), a bottom support block (4), a top support block (5), a diameter measuring scale (6), a scale limit block (7), and a detection end (8), characterized in that: The annular washer (2) is rotationally and concentrically fitted with the circular base plate (1), the angle ruler (3) is fixedly and concentrically fitted with the circular base plate (1), the bottom support block (4) is detachably connected to the annular washer (2), the top support block (5) is detachably connected to the bottom support block (4), the matching height of the top support block (5) and the bottom support block (4) is adjustable, the diameter measuring scale (6) is slidably fitted with the top support block (5), the scale limiting block (7) is detachably connected to the top support block (5), and the detection end (8) is detachably connected to one end of the diameter measuring scale (6).

2. The outer diameter detection device for the full-stroke movement main body of the lateral force spring of an automotive suspension according to claim 1, wherein: At the bottom center position of the circular base plate (1), there is a positioning post (9). From the outside to the inside of the upper part of the circular base plate (1), a washer step (10), an angle ruler step (11), and a spring installation step (12) are processed in sequence. The washer step (10) is adapted to the annular washer (2), the angle ruler step (11) is adapted to the angle ruler (3), and the spring installation step (12) is adapted to the spring to be detected.

3. The outer diameter detection device for the full stroke movement main body of the lateral force spring of an automobile suspension according to claim 1, characterized in that: At the lower part of the bottom support block (4), there is an assembly seat (13). The bottom support block (4) is detachably connected to the annular washer (2) through the assembly seat (13). A trapezoidal groove (14) is provided on the bottom support block (4), and a number of circular through holes (15) are provided at the bottom of the trapezoidal groove (14). An arc surface (16) adapted to the angle ruler (3) is provided on one side of the assembly seat (13).

4. An outer diameter detection device for the full stroke movement main body of a lateral force spring of an automobile suspension according to claim 3, characterized in that: The top support block (5) includes a trapezoidal column (17) and a chute head (18). A slot hole (19) is provided on the trapezoidal column (17), and a chute (20) is provided on the chute head (18). The trapezoidal column (17) is adapted to the trapezoidal groove (14), and the slot hole (19) is adapted to the circular through hole (15).

5. The outer diameter detection device for the full-stroke movement body of the lateral force spring of an automobile suspension according to claim 4, characterized in that: At the lower part of the diameter measuring scale (6), a slide rail (21) is arranged, and the slide rail (21) is adapted to the chute (20).

6. The outer diameter detection device for the full stroke movement body of the lateral force spring of an automobile suspension according to claim 1, characterized in that: The scale limiting block (7) is detachably connected to the top support block (5) through a threaded connector. An indicating needle (22) adapted to the diameter measuring scale (6) is arranged on the scale limiting block (7).

7. An outer diameter detection device for the full stroke movement body of an automotive suspension lateral force spring according to claim 1, characterized in that: On one side position of the detection end (8), a connecting plate (23) is arranged. The detection end (8) is detachably connected to one end of the diameter measuring scale (6) through the connecting plate (23).

8. A detection method for the outer diameter of the full-stroke moving body of a lateral force spring of an automotive suspension using the detection device described in claim 1, characterized in that: It includes the following steps: S1. Through the rotational and concentric fit between the circular base plate and the annular washer, the angle ruler is fixed on the circular base plate through a threaded connector. The assembly seat at the lower part of the bottom support block is fixedly connected to the annular washer through a threaded connector. The top support block is vertically slid up and down in the trapezoidal groove of the bottom support block to adjust the detection height; S2. After determining the detection height, the threaded connector is fitted with the corresponding circular through hole and slot hole to complete the fixed fit between the bottom support block and the top support block. The spring to be detected is installed on the spring installation step of the circular base plate, and the spring to be detected is fixed through a threaded connector; S3. After the loading of the spring to be detected under the established working conditions is completed, the spring to be detected with a central axis in an S-shaped or C-shaped curve will produce eccentric bending, and the value of the outer diameter in the middle of the spring to be detected will change compared with the free state. Record the angle value of the spring section on the angle gauge δ 0 and the value of the diameter measuring scale Φ 0 , adjust the matching height of the bottom support block and the top support block to ensure that the middle part of the detection end contacts the upper end section of the spring, and rotate the annular washer to δ 0 +180°; S4. As the outer diameter of the spring increases, the detection end is pushed back. By observing the reading of the diameter measuring scale through the indicating needle of the scale limit block, the change in the outer diameter of the spring to be detected can be known, and the value of the diameter measuring scale is recorded. Φ 1 , readjust the matching height of the bottom support block and the top support block to ensure that the middle of the detection end contacts the upper end section of the spring to be detected, and rotate the annular washer to δ 0 +360°, and record the value of the diameter measuring scale again. Φ 2 , then the measurement of the outer diameter of the first coil of the spring to be detected is completed. S5. Repeat the above steps to measure the maximum value of the major outer diameter of each coil of the spring to be detected. Φ 0 , Φ 1 ,..., Φn . Compare the outer diameter value with the reserved space for the spring arrangement of the vehicle chassis suspension, and it can be determined whether the spring to be detected will have kinematic interference with its surrounding parts during operation.

Images