A tolerance laser detector for shock absorbers

Abstract

The application relates to the technical field of tolerance laser detection, in particular to a shock absorber tolerance laser detector, which comprises a detection table, manually retractable rods symmetrically installed on the left and right sides above the detection table, the upper ends of the manually retractable rods are connected with a bearing frame, a mounting disc is arranged at the middle position of the upper surface of the detection table, a supporting ring plate is rotatably arranged on the outer side of the mounting disc, four groups of clamping mechanisms are connected on the inner side of the upper surface of the mounting disc, first threaded rods are symmetrically arranged on the upper surface of the detection table, and the outer sides of the first threaded rods are in threaded connection with the supporting ring plate. The shock absorber tolerance laser detector can detect the inner diameter size, inner diameter surface quality and cylindricity of a shock absorber cylinder, can detect the diameter, surface roughness and cylindricity of a shock absorber piston rod, can meet different detection requirements, can obviously reduce the outflow of defective products, and can improve the applicability of the tolerance laser detector.

Description

Technical Field

[0001] This invention relates to the field of tolerance laser testing technology, specifically to a tolerance laser testing instrument for shock absorbers. Background Technology

[0002] Shock absorbers, also known as dampers, reduce the impact of external vibrations on products by absorbing or dissipating vibration energy, thus preventing product damage. Shock absorbers are widely used in construction, bridges, automobiles, and mechanical equipment. During the production and processing of shock absorbers, tolerance laser measuring instruments are used to inspect the dimensions of piston rods, cylinders, and the assembled shock absorbers. This is to determine whether the dimensions of the shock absorbers and their components are within tolerance ranges, ensuring the accuracy and performance of the shock absorbers during manufacturing or use. Because laser measuring instruments are non-contact measurements and do not come into contact with the surface of the measured parts, they avoid damage and are especially suitable for inspecting precision shock absorber components.

[0003] For example, the patent with publication number "CN207779354U" entitled "An Intelligent Insulator for Form and Position Tolerances" discloses a process where a laser light source is turned on, and a control console operates a motor to rotate a turntable. The laser light source illuminates the rotating insulator, and the parallelism formed by the rotation is imaged on a parallelism imaging processor, which collects the data. Similarly, the coaxiality formed by the rotation is imaged on a coaxiality imaging processor, which also collects the data. The insulator form and position tolerance data collected by the parallelism and coaxiality imaging processors are transmitted to a data processing device for data conversion and processing, resulting in more accurate detection results. Another example is the prior art patent with publication number "CN119". The patent disclosed in "043165A" is titled "A Laser Testing Stand for Vehicle Shock Absorbers." It discloses that before the hydraulic cylinder pulls the piston rod, four sets of laser emitters and laser receivers are arranged in the east-west and north-south directions, forming four regions: southeast, northeast, southwest, and northwest. Each set of laser emitters emits laser light in a straight line and is received by the same set of laser receivers. The straight-line laser light is set in the tangent direction of the piston rod. The four sets of lasers are perpendicular to each other and are located at the four tangent points of the piston rod in the east-west and north-south directions. When the hydraulic cylinder pulls the piston rod, if the piston rod is deflected, the laser light is blocked by the deflected piston rod. If the piston rod moves in a normal straight line, the laser light is not blocked. This determines whether the piston rod deviates during reciprocating motion, and thus determines whether the shock absorber being tested is installed correctly.

[0004] The existing tolerance laser testing instrument for shock absorbers has limitations in its operation due to the limited position adjustment range of the laser emitter and receiver. This limits its ability to detect whether the piston rod is misaligned during movement, and it cannot meet other testing requirements. Consequently, the applicability of this tolerance laser testing instrument is poor. Therefore, we propose a tolerance laser testing instrument for shock absorbers to solve the problems mentioned above. Summary of the Invention

[0005] The purpose of this invention is to provide a tolerance laser testing instrument for shock absorbers, in order to solve the problem mentioned in the background art that the tolerance laser testing instruments for shock absorbers currently on the market are limited in use because the laser emitter and laser receiver are restricted by the position adjustment range. This limits the laser testing instrument to detecting whether the piston rod is deflected during movement, and it cannot meet other testing needs, thus making the tolerance laser testing instrument less applicable.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a tolerance laser testing instrument for shock absorbers, comprising a testing platform and manually telescopic rods symmetrically installed on the left and right sides above it, with the upper ends of the manually telescopic rods connected to a support frame. A mounting plate is provided at the center of the upper surface of the testing platform, and a support ring plate is rotatably installed on the outer side of the mounting plate. Four sets of clamping mechanisms are connected inside the upper part of the mounting plate. First threaded rods are symmetrically installed on the front and back of the upper surface of the testing platform, and the outer sides of the first threaded rods are threadedly connected to the support ring plate. A left support block and a right support block are installed inside the support frame through a direction-finding adjustment assembly. A first laser ranging mechanism is installed in the lower arc surface of the left support block. The lower part of the right support block is connected to a connecting block through an electric push rod, and a second laser ranging mechanism is installed in the lower arc surface of the connecting block.

[0007] Preferably, four sets of second threaded rods are installed at equal intervals inside the mounting plate, and the inner ends of the four sets of second threaded rods are connected by a bevel gear set. The outer end of one of the second threaded rods penetrates the outer side of the mounting plate, and a clamping mechanism is threadedly connected to the outer side of the second threaded rod. The lower ends of the two first threaded rods are connected by a sprocket assembly.

[0008] Preferably, the left support block, the right support block, and the connecting block are all semi-circular, and the left support block is in close contact with the right support block and the connecting block.

[0009] Preferably, the left support block and the connecting block are symmetrically arranged about the vertical center line of the mounting plate.

[0010] Preferably, the orientation adjustment assembly includes a bidirectional lead screw installed in a groove on the bottom surface of the support frame. The right end of the bidirectional lead screw passes through the right side of the support frame. Two adjusting blocks are threaded to the outer side of the bidirectional lead screw. A connecting rod is rotatably installed below the adjusting blocks. A transmission gear is keyed to the outer side of the upper vertical end of the connecting rod. The lower vertical end of one connecting rod is connected to the upper part of the left support block, and the lower vertical end of the other connecting rod is connected to the upper part of the right support block.

[0011] Preferably, two rack assemblies are symmetrically mounted on the lower rear surface of the support frame, and the front side of the rack assembly is meshed with the transmission gear.

[0012] Preferably, a self-rotating rod is rotatably connected to the bottom surface of the mounting plate, and a spiral spring is nested on the outer side of the upper end of the self-rotating rod. One end of the spiral spring is connected to the support ring plate, and a self-control rope is wound around the outer side of the lower part of the self-rotating rod. The lower end of the self-control rope is connected to the testing table through a guide wheel.

[0013] Preferably, a protective cylinder is installed at the upper center of the mounting plate, and a cover plate connected to the reset spring inside the upper inner wall of the protective cylinder is fitted to it. Furthermore, an air-storing airbag is installed inside the bottom surface of the protective cylinder, and an expansion airbag is installed by slotting the upper inner wall of the protective cylinder. A connecting pipe is symmetrically installed on the bottom surface of the air-storing airbag, and one end of the connecting pipe passes through the side wall of the protective cylinder and is connected to the expansion airbag.

[0014] Preferably, the upper diameter of the protective cylinder is larger than the lower diameter of the protective cylinder, and half of the lower diameter of the protective cylinder is larger than the radius of the left support block, and the cover plate forms a lifting structure through the left support block.

[0015] Preferably, the air-storage bladder is arranged in a circular shape.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the tolerance laser inspection instrument for the shock absorber can inspect the inner diameter, inner diameter surface quality, and cylindricity of the shock absorber cylinder, and can inspect the diameter, surface roughness, and cylindricity of the shock absorber piston rod, thereby meeting different inspection requirements, significantly reducing the outflow of defective products, and improving the applicability of the tolerance laser inspection instrument. The specific details are as follows:

[0017] (1) By inserting two opposing first laser ranging mechanisms and second laser ranging mechanisms into one end of the shock absorber cylinder, the inner diameter of the shock absorber cylinder can be detected, thereby determining whether the inner diameter of the shock absorber cylinder is within the tolerance range and whether it meets the production and processing requirements.

[0018] Furthermore, through the cooperation of the first threaded rod and the self-rotating rod, the mounting plate drives the shock absorber cylinder to rise and rotate at the same time, thereby enabling the detection of the inner diameter surface quality and cylindricity of the shock absorber cylinder, thus meeting different detection requirements.

[0019] (2) The first laser ranging mechanism and the second laser ranging mechanism are set to face each other by the direction-finding adjustment component, so that the first laser ranging mechanism and the second laser ranging mechanism can detect the diameter of the shock absorber piston rod, thereby determining whether the diameter of the shock absorber piston rod is within the tolerance range and whether it meets the production and processing requirements.

[0020] Furthermore, through the cooperation of the first threaded rod and the self-rotating rod, the mounting plate drives the shock absorber piston rod to rise and rotate at the same time. This allows for the detection of the surface roughness and cylindricity of the shock absorber piston rod, thereby meeting different detection requirements, significantly reducing the outflow of defective products, and improving the applicability of the tolerance laser inspection instrument.

[0021] (3) When the entire tolerance laser measuring instrument is not in use, the support frame is lowered by manually extending the telescopic rod. This not only reduces the height of the entire tolerance laser measuring instrument and the area occupied, making it easier to carry and transport the tolerance laser measuring instrument later, but also allows the lower end of the left support block and the lower end of the connecting block to be inserted into the protective cylinder. This allows the protective cylinder to work with the inflatable airbag to shield and protect the outside of the first laser ranging mechanism and the second laser ranging mechanism, preventing dust from sticking to the surface of the first laser ranging mechanism and the second laser ranging mechanism during use and affecting the accuracy of the later detection. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the left view of the supporting ring plate structure of the present invention;

[0024] Figure 3 This is a side sectional view of the connection between the testing platform and the first threaded rod of the present invention.

[0025] Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle;

[0026] Figure 5 This is a top sectional view of the mounting plate structure of the present invention;

[0027] Figure 6 This is a partial cross-sectional bottom view of the support frame of the present invention;

[0028] Figure 7 This is a schematic diagram of the connection structure between the mounting plate and the shock absorber cylinder of the present invention;

[0029] Figure 8 This is a schematic diagram of the main cross-sectional structure of the protective cylinder of the present invention;

[0030] Figure 9 This is a schematic diagram of the connection structure between the mounting plate and the shock absorber piston rod of the present invention;

[0031] Figure 10 This is a schematic diagram of the structure of the left support block after rotation, viewed from below.

[0032] Figure 11 This is a three-dimensional structural diagram of the support frame after it has been lowered according to the present invention.

[0033] In the diagram: 1. Testing platform; 2. Manual telescopic rod; 3. Bearing frame; 4. Mounting plate; 5. Support ring plate; 6. First threaded rod; 7. Left support block; 71. First laser ranging mechanism; 8. Right support block; 81. Connecting block; 82. Electric push rod; 83. Second laser ranging mechanism; 9. Clamping mechanism; 91. Second threaded rod; 10. Protective cylinder; 11. Rotating rod; 111. Vortex spring; 112. Self-control rope; 12. Bidirectional lead screw; 13. Adjusting block; 14. Rack assembly; 15. Connecting rod; 16. Transmission gear; 17. Cover plate; 171. Return spring; 18. Air storage bag; 181. Connecting pipe; 182. Inflatable air bag. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Please see Figures 1-11 The present invention provides the following technical solution:

[0036] Example 1: The tolerance laser inspection instrument for shock absorbers in this example can meet different inspection needs, thus making the tolerance laser inspection instrument highly applicable. For specific structure details, please refer to the attached document. Figures 1-7 and appendix Figures 9-10As shown, the system includes a testing platform 1 and manually telescopic rods 2 symmetrically installed on its upper left and right sides. The upper ends of the manually telescopic rods 2 are connected to the support frame 3. A mounting plate 4 is provided in the middle of the upper surface of the testing platform 1, and a support ring plate 5 is rotatably installed on the outer side of the mounting plate 4. Four sets of clamping mechanisms 9 are connected to the upper interior of the mounting plate 4. First threaded rods 6 are symmetrically installed on the upper surface of the testing platform 1, and the outer sides of the first threaded rods 6 are threadedly connected to the support ring plate 5. A left support block 7 and a right support block 8 are installed inside the support frame 3 through a direction-finding adjustment assembly. A first laser ranging mechanism 71 is installed in the arc-shaped surface below the left support block 7. The lower part of the right support block 8 is connected to a connecting block 81 through an electric push rod 82. A second laser ranging mechanism 83 is installed in the arc-shaped surface below the connecting block 81.

[0037] Four sets of second threaded rods 91 are evenly spaced inside the mounting plate 4, and the inner ends of the four sets of second threaded rods 91 are connected by a bevel gear set. The outer end of one of the second threaded rods 91 penetrates the outer side of the mounting plate 4, and the outer thread of the second threaded rod 91 is threadedly connected to a clamping mechanism 9. The lower ends of the two first threaded rods 6 are connected by a sprocket assembly. The left support block 7, the right support block 8, and the connecting block 81 are all semi-circularly arranged, and the left support block 7 is tightly fitted with the right support block 8 and the connecting block 81. The left support block 7 and the connecting block 81 are symmetrically arranged about the vertical center line of the mounting plate 4. The directional adjustment assembly includes a bidirectional screw 12 installed in a groove opened on the bottom surface of the support frame 3. The right end of the bidirectional screw 12 penetrates the right side of the support frame 3, and the outer thread of the bidirectional screw 12 is threadedly connected to two adjustment... A connecting rod 15 is rotatably mounted below the section block 13 and the adjusting block 13. A transmission gear 16 is keyed to the outer side of the upper vertical end of the connecting rod 15. The lower vertical end of one connecting rod 15 is connected to the upper part of the left support block 7, and the lower vertical end of the other connecting rod 15 is connected to the upper part of the right support block 8. Two rack assemblies 14 are symmetrically mounted on the lower rear side of the support frame 3. The front side of the rack assembly 14 is meshed with the transmission gear 16. A self-rotating rod 11 is rotatably connected to the bottom surface of the mounting plate 4. A spiral spring 111 is nested on the outer side of the upper end of the self-rotating rod 11. One end of the spiral spring 111 is connected to the support ring plate 5. A self-control rope 112 is wound around the outer side of the lower part of the self-rotating rod 11. The lower end of the self-control rope 112 is connected to the detection table 1 through a guide wheel.

[0038] First, when the inner diameter of the shock absorber cylinder needs to be tested, one end of the shock absorber cylinder is placed in the upper center of the mounting plate 4. Since the inner diameter of the shock absorber cylinder is larger than the diameter of the protective sleeve 10, the protective sleeve 10 is inserted into the shock absorber cylinder. Then, one end of one of the second threaded rods 91 is manually rotated. When the second threaded rod 91 rotates, the outer bevel gear set simultaneously drives the other three second threaded rods 91 to rotate together, thus causing all four second threaded rods 91 to rotate simultaneously. The rotation of the four second threaded rods 91 causes the outer threaded clamping mechanism 9 to move inward, allowing the four clamping mechanisms 9 to clamp and fix one end of the shock absorber cylinder. Next, the servo motor in the testing table 1 is started. The servo motor drives one of the first threaded rods 6 to rotate. Since the lower ends of the two first threaded rods 6 are connected by a sprocket assembly, the two first threaded rods 6 rotate simultaneously. The rotation of the first threaded rod 6 causes the outer threaded support ring plate 5 to rise, and the support ring plate 5 causes the mounting plate 4 to move upward, as shown in the attached diagram. Figure 7 As shown, when the mounting plate 4 moves the shock absorber cylinder to a certain height, the lower ends of the tightly fitted left support block 7 and connecting block 81 will be inserted into the upper end of the shock absorber cylinder. This causes the first laser ranging mechanism 71 and the second laser ranging mechanism 83 to be inserted into the upper end of the shock absorber cylinder in opposite directions. At this time, the first laser ranging mechanism 71 detects the distance between the left side of the left support block 7 and the left inner wall of the shock absorber cylinder, and the distance value is D1. The second laser ranging mechanism 83 detects the distance between the right side of the connecting block 81 and the right inner wall of the shock absorber cylinder, and the distance value is D2. The radii of the left support block 7 and the connecting block 81 are both D3. Then, the inner diameter of the shock absorber cylinder can be determined as D = D1 + D2 + D3 + D3. The inner diameter of the shock absorber cylinder can then be measured to determine whether the inner diameter of the shock absorber cylinder is within the tolerance range and meets the production and processing requirements.

[0039] Meanwhile, as the mounting plate 4 rises, the lower end of the self-control rope 112 is pulled, causing the self-control rope 112 to automatically drive the self-rotating rod 11 to rotate. The spiral spring 111 begins to store force, and the spiral spring 111 drives the mounting plate 4 to rotate together. Therefore, the mounting plate 4 rotates within the support ring plate 5, which in turn causes the mounting plate 4 to drive the shock absorber cylinder to rise and rotate at the same time. This allows the first laser ranging mechanism 71 and the second laser ranging mechanism 83 to measure the inner diameter at different positions inside the shock absorber cylinder. If the inner diameter values ​​at different positions are the same, it indicates that the inner diameter surface of the shock absorber cylinder is smooth and the cylindricity meets the standard. If the inner diameter values ​​at different positions are not the same, it indicates that the inner diameter surface of the shock absorber cylinder is rough and the cylindricity does not meet the standard.

[0040] When it is necessary to test the diameter of the shock absorber piston rod, the following applies: Figures 9-10As shown, the bidirectional lead screw 12 is first rotated manually, or it can be rotated using a motor. When the bidirectional lead screw 12 rotates, it drives the two adjusting blocks 13 connected by the outer threads to move outwards simultaneously. Then, the two adjusting blocks 13, through the two connecting rods 15, drive the left support block 7 and the right support block 8 to move outwards, causing them to separate. When the connecting rod 15 moves to a certain position, the transmission gear 16 on the outer side of the connecting rod 15 meshes with the rack assembly 14, causing the transmission gear 16 to rotate the connecting rod 15 180°. One of the connecting rods 15 causes the left support block 7 and the first laser ranging mechanism 71 to rotate 180°, while the other connecting rod 15 causes the right support block 8, the connecting block 81, the electric push rod 82, and the second laser ranging mechanism 83 to rotate 180° together. This causes the first laser ranging mechanism 71 and the second laser ranging mechanism 83 to face each other. At the same time, the electric push rod 82 is activated, causing the connecting block 81 and the second laser ranging mechanism 83 to move upward, so that the second laser ranging mechanism 83 and the first laser ranging mechanism 71 are not on the same horizontal plane.

[0041] Next, place one end of the shock absorber piston rod onto the protective cylinder 10 located in the middle of the mounting plate 4. Manually rotate one end of one of the second threaded rods 91, as described above. Since the operation steps are the same, they will not be repeated in detail. This allows the four clamping mechanisms 9 to clamp and fix one end of the shock absorber piston rod. Then, start the servo motor in the testing table 1. The servo motor drives one of the first threaded rods 6 to rotate. When the first threaded rod 6 rotates, it drives the support ring plate 5 and the mounting plate 4 to move upward. When the mounting plate 4 moves the shock absorber piston rod to a certain height, the first laser measurement... The distance measuring mechanism 71 detects the distance between the right side of the left support block 7 and the left side of the shock absorber piston rod, and the distance value at this time is L1. The second laser distance measuring mechanism 83 detects the distance between the left side of the connecting block 81 and the right side of the left support block 7, and the distance value at this time is L2. Since the left support block 7 and the connecting block 81 are symmetrically set about the vertical center line of the mounting plate 4, the diameter of the shock absorber piston rod can be determined as L = L2 - L1 - L1. Then the diameter of the shock absorber piston rod can be detected to determine whether the diameter of the shock absorber piston rod is within the tolerance range and whether it meets the production and processing requirements.

[0042] At the same time, as described above, the mounting plate 4 causes the shock absorber piston rod to rise and rotate simultaneously. This allows the first laser ranging mechanism 71 and the second laser ranging mechanism 83 to measure the diameter of the shock absorber piston rod at different positions. If the diameter values ​​at different positions are the same, it indicates that the diameter surface of the shock absorber piston rod is smooth and the cylindricity meets the standard. If the diameter values ​​at different positions are not the same, it indicates that the diameter surface of the shock absorber piston rod is rough and the cylindricity does not meet the standard. This can meet different testing requirements and significantly reduce the outflow of defective products.

[0043] Example 2: The tolerance laser measuring instrument for the shock absorber in this example facilitates its carrying and transportation when not in use, and also facilitates the protection of the first laser ranging mechanism 71 and the second laser ranging mechanism 83. The specific structure is shown in the attached diagram. Figures 8-11 As shown, a protective cylinder 10 is installed at the upper center of the mounting plate 4, and a cover plate 17 connected to the reset spring 171 inside the upper inner wall of the protective cylinder 10 is fitted to it. An air-storing airbag 18 is installed inside the bottom surface of the protective cylinder 10, and an expansion airbag 182 is installed in a groove on the upper inner wall of the protective cylinder 10. A connecting pipe 181 is symmetrically installed on the bottom surface of the air-storing airbag 18. One end of the connecting pipe 181 passes through the side wall of the protective cylinder 10 and is connected to the expansion airbag 182. The upper diameter of the protective cylinder 10 is larger than the lower diameter of the protective cylinder 10, and half of the lower diameter of the protective cylinder 10 is larger than the radius of the left support block 7. The cover plate 17 forms a lifting structure through the left support block 7, and the air-storing airbag 18 is arranged in a ring shape.

[0044] Based on Example 1, when the entire tolerance laser inspection instrument is as shown in the attached... Figure 1After use, manually unlock the locking mechanism of the manual telescopic rod 2 (since the manual telescopic rod 2 is existing technology, it will not be described in detail here). Manually control the manual telescopic rod 2 to drive the support frame 3 to descend, causing the support frame 3 to drive the left support block 7 and the right support block 8 to descend together. Then, the lower ends of the left support block 7 and the connecting block 81 contact the cover plate 17 and apply a downward thrust. At this time, the return spring 171 stores power. When the cover plate 17 descends to contact the air storage bladder 18, it compresses the air storage bladder 18. The gas in the air storage bladder 18 enters the annular expansion bladder 182 through the connecting pipe 181, causing the volume of the expansion bladder 182 to expand inward, thereby making the inner surface of the expansion bladder 182 tightly against the air storage bladder 182. The outer surfaces of the left support block 7 and the connecting block 81 are in close contact to prevent external dust from entering the protective cylinder 10. This allows the first laser ranging mechanism 71 and the second laser ranging mechanism 83 to be properly placed inside the protective cylinder 10, facilitating the shielding and protection of the first laser ranging mechanism 71 and the second laser ranging mechanism 83. This prevents external dust from adhering to the surfaces of the first laser ranging mechanism 71 and the second laser ranging mechanism 83 during use, thus affecting the accuracy of subsequent detection. Next, the locking mechanism of the manual telescopic rod 2 is manually locked to fix the height position of the carrier frame 3 after it is lowered. The overall height of the tolerance laser inspection instrument is low, making it easy to carry and transport, meeting different needs, and thus completing a series of tasks.

[0045] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A tolerance laser testing instrument for shock absorbers, comprising a testing platform (1) and manually operated telescopic rods (2) symmetrically installed on the left and right sides above it, wherein the upper end of the manually operated telescopic rods (2) is connected to a support frame (3), characterized in that: A mounting plate (4) is provided at the middle of the upper surface of the testing platform (1), and a support ring plate (5) is rotatably mounted on the outer side of the mounting plate (4). Four sets of clamping mechanisms (9) are connected inside the upper part of the mounting plate (4). A first threaded rod (6) is symmetrically mounted on the upper surface of the testing platform (1), and the outer side of the first threaded rod (6) is threadedly connected to the support ring plate (5). A left support block (7) and a right support block (8) are installed inside the bearing frame (3) through a direction-finding adjustment assembly. A first laser ranging mechanism (71) is installed in the arc-shaped surface below the left support block (7). The lower part of the right support block (8) is connected to the connecting block (81) through an electric push rod (82), and a second laser ranging mechanism (81) is installed in the arc-shaped surface below the connecting block (81). 3) The direction finding adjustment assembly includes a bidirectional lead screw (12) installed in a groove on the bottom surface of the support frame (3). The right end of the bidirectional lead screw (12) passes through the right side of the support frame (3). Two adjusting blocks (13) are threaded to the outside of the bidirectional lead screw (12). A connecting rod (15) is rotatably installed below the adjusting block (13). A transmission gear (16) is keyed to the outside of the upper vertical end of the connecting rod (15). The lower vertical end of one of the connecting rods (15) is connected to the upper part of the left support block (7), and the lower vertical end of the other connecting rod (15) is connected to the upper part of the right support block (8). Two rack assemblies (14) are symmetrically installed on the lower rear side of the support frame (3), and the front side of the rack assembly (14) is meshed with the transmission gear (16).

2. The tolerance laser testing instrument for shock absorbers according to claim 1, characterized in that: The mounting plate (4) is equipped with four sets of second threaded rods (91) at equal intervals inside. The inner ends of the four sets of second threaded rods (91) are connected by a bevel gear set. The outer end of one of the second threaded rods (91) passes through the outer side of the mounting plate (4). The outer side of the second threaded rod (91) is threadedly connected to a clamping mechanism (9). The lower ends of the two first threaded rods (6) are connected by a sprocket assembly.

3. The tolerance laser testing instrument for shock absorbers according to claim 1, characterized in that: The left support block (7), right support block (8) and connecting block (81) are all semi-circular, and the left support block (7) is closely fitted with the right support block (8) and connecting block (81).

4. The tolerance laser testing instrument for shock absorbers according to claim 1, characterized in that: The left support block (7) and the connecting block (81) are symmetrically arranged about the vertical center line of the mounting plate (4).

5. A tolerance laser testing instrument for shock absorbers according to claim 1, characterized in that: The bottom surface of the mounting plate (4) is rotatably connected to a self-rotating rod (11), and a spiral spring (111) is nested on the outer side of the upper end of the self-rotating rod (11). One end of the spiral spring (111) is connected to the support ring plate (5), and a self-control rope (112) is wound around the outer side of the lower part of the self-rotating rod (11). The lower end of the self-control rope (112) is connected to the testing table (1) through a guide wheel.

6. The tolerance laser testing instrument for shock absorbers according to claim 1, characterized in that: A protective cylinder (10) is installed at the upper middle position of the mounting plate (4), and a cover plate (17) connected to the reset spring (171) inside the upper inner wall of the protective cylinder (10) is fitted. An air storage bag (18) is installed inside the bottom surface of the protective cylinder (10), and an expansion bag (182) is installed in a groove on the upper inner wall of the protective cylinder (10). A connecting pipe (181) is symmetrically installed on the bottom surface of the air storage bag (18), and one end of the connecting pipe (181) passes through the side wall of the protective cylinder (10) and is connected to the expansion bag (182).

7. A tolerance laser testing instrument for shock absorbers according to claim 6, characterized in that: The upper diameter of the protective cylinder (10) is greater than the lower diameter of the protective cylinder (10), and half of the lower diameter of the protective cylinder (10) is greater than the radius of the left support block (7). The cover plate (17) forms a lifting structure through the left support block (7).

8. A tolerance laser testing instrument for shock absorbers according to claim 7, characterized in that: The air storage bladder (18) is arranged in a circular shape.

Images