A shock absorber clamping positioning tool and clamping method

Abstract

The present application belongs to the technical field of automobile shock absorber, and particularly relates to a shock absorber clamping positioning tool and clamping method. The positioning tool comprises a base, a positioning boss, an adapter block, a limiting block, a support and a positioning pin. The limiting block and the support are located on both sides of the positioning boss in the horizontal direction. The adapter block is provided with a plug-in hole with an opening facing upward and a first positioning hole perpendicular to and in communication with the plug-in hole. The limiting block is provided with a plug-in part and an axial limiting part. The plug-in part is plugged into the plug-in hole, and the lower end surface of the axial limiting part is in close contact with the upper surface of the adapter block. The plug-in part is provided with a second positioning hole, and the positioning pin is plugged into the first positioning hole and the second positioning hole. The support and the adapter block are radially adjustable relative to the positioning boss. The positioning boss is detachably installed on the base. By replacing the positioning boss and the limiting block and adjusting the horizontal position of the support and the adapter block, different specifications of shock absorbers can be clamped and positioned, the line changing efficiency is improved, and the labor and material costs are saved.

Description

Technical Field

[0001] This invention belongs to the field of automotive shock absorber technology, specifically relating to a shock absorber clamping and positioning fixture and clamping method. Background Technology

[0002] The shock absorber is a crucial component of the automotive suspension system, its primary function being to cushion vibrations during vehicle operation, thereby improving ride stability and safety. The shock absorber 91 has a concave circular groove at its bottom. A shock absorber bracket is welded to the lower part of the outer cylinder of the shock absorber 91. The shock absorber bracket includes a retaining sleeve 92 welded to the outer cylinder and a U-shaped component 93 welded to the outside of the retaining sleeve 92, with the U-shaped groove on the U-shaped component 93 facing outwards. An outer connecting sleeve is located at the upper end of the shock absorber 91, and this sleeve has axial mounting holes that mate with the vehicle's suspension. The lower end of the shock absorber is connected to the wheel axle via the U-shaped component 93, and the upper end is mounted on the vehicle's suspension via the outer connecting sleeve. Therefore, the assembly of the shock absorber requires ensuring the assembly accuracy of the outer connecting sleeve, the shock absorber 91, and the U-shaped component 93 on the shock absorber bracket to guarantee a smooth and efficient connection of the shock absorber to the wheel axle and vehicle body during final vehicle assembly.

[0003] After the shock absorber bracket is welded onto the shock absorber 91, the shock absorber is assembled in a continuous assembly line. During assembly, the shock absorber 91 is clamped onto a positioning fixture on the assembly line. The positioning fixture drives the shock absorber assembly structure to complete the assembly of springs, outer connecting sleeves, and other structures at various workstations on the assembly line. The existing positioning fixture includes a base plate, on which positioning components are fixed to radially position the shock absorber body 91 and circumferentially position the U-shaped part 93. Although this positioning fixture can clamp and position the shock absorber, due to the variety of shock absorber specifications, the structures of the shock absorber body 91, sleeve 92, and U-shaped part 93 of different specifications of shock absorber assembly structures are not entirely the same. The positions and structures of the positioning components on the existing positioning fixture are not adjustable. This not only requires the use of multiple positioning fixtures of different specifications, resulting in high costs, but also requires the replacement of the entire positioning fixture when changing the type of shock absorber, which is time-consuming and labor-intensive, reduces line changeover efficiency, and cannot achieve flexible switching of the production line. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a clamping and positioning fixture and clamping method suitable for shock absorbers of different specifications, so as to save costs and improve the switching efficiency of shock absorber assembly line.

[0005] The technical solution adopted by the present invention to solve this technical problem is: a shock absorber clamping and positioning fixture, including a base, wherein a positioning boss, a limiting block and a support are fastened to the top surface of the base, the limiting block and the support are located on both sides of the positioning boss in the horizontal direction; the top surface of the base is a limiting plane;

[0006] It also includes an adapter block fastened to the top surface of the base and a positioning pin mounted on the adapter block; the adapter block has an upward-facing insertion hole and a first positioning insertion hole perpendicular to the insertion hole, the first positioning insertion hole and the insertion hole being connected; the limiting block has a downward-protruding insertion part and an axial limiting part protruding from the side wall of the insertion part, the insertion part being inserted into the insertion hole, the axial limiting part being in contact with the upper surface of the adapter block; the insertion part has a second positioning insertion hole; the positioning pin is inserted into the first positioning insertion hole and the second positioning insertion hole;

[0007] The support member and the adapter block are adjustable in the radial direction of the positioning boss; the positioning boss is detachably mounted on the base.

[0008] Furthermore, the positioning boss and the base are fastened together by a first fastening bolt, the center line of which is arranged in the vertical direction;

[0009] The sidewall at the upper part of the positioning boss includes two parallel clamping planes.

[0010] Furthermore, a positioning groove is provided on the top surface of the base, and the lower part of the positioning boss is inserted into the positioning groove; the side wall of the positioning groove is in contact with the side wall of the positioning boss.

[0011] Furthermore, the insertion part has a prism structure, and the shape and size of the insertion hole and the insertion part are adapted to each other.

[0012] Furthermore, the limiting block protrudes from the outer wall of the insertion part, and the bottom surface of the limiting block is the axial limiting part. The structure plate is simple and easy to process.

[0013] Furthermore, the positioning pin includes a first pin segment and a second pin segment that are axially adjacent and coaxially arranged, and also includes an axial limiting portion protruding from the outer wall of the first pin segment and a second protrusion protruding from the side wall of the second pin segment.

[0014] The first pin segment is inserted into the second positioning hole. The second pin segment, the axial limiting part and the second protrusion are all located in the first positioning hole. The end of the second pin segment away from the first pin segment extends out of the first positioning hole.

[0015] The first positioning hole has a radially inward protrusion at its open end; a compression elastic element is provided inside the first positioning hole, one end of which abuts against the second protrusion, and the other end of which abuts against the first protrusion.

[0016] Furthermore, a ring plate is coaxially provided on the first pin segment, protruding from the sidewalls of the first pin segment and the second pin segment. The outer contour of the cross-section of the ring plate is adapted to the shape and size of the first positioning hole. The ring plate is the second protrusion, and the end face of the ring plate away from the second pin segment is the axial limiting part.

[0017] Furthermore, the compression elastic element is a compression elastic sleeve fitted onto the second pin segment.

[0018] Furthermore, a pull ring is provided on the end of the second pin that extends out of the first positioning hole.

[0019] The vibration damper clamping and positioning method using any of the above-mentioned vibration damper clamping and positioning fixtures includes the following steps:

[0020] S1. Position and install the base of the shock absorber clamping and positioning fixture on the prefabrication station of the conveyor line;

[0021] S2. Select the positioning boss that matches the specifications of the shock absorber and assemble it on the base; select the limiting block that matches the U-shaped slot of the U-shaped part and assemble it on the adapter block.

[0022] Adjust the positions of the support member and the adapter block on the base so that the distance between the support member and the center line of the positioning boss is greater than the radius of the outer wall of the sleeve, and the distance between the limiting block and the center line of the positioning boss is greater than the distance between the bottom wall of the U-shaped groove of the U-shaped member and the center line of the shock absorber.

[0023] S3. Align the circular groove on the bottom surface of the pre-clamped and positioned shock absorber with the positioning boss so that the positioning boss is inserted into the circular groove on the bottom surface of the shock absorber. Align the U-shaped slot on the U-shaped part with the limiting block so that the limiting block is inserted into the U-shaped slot of the U-shaped part.

[0024] S4. Adjust the position of the adapter block on the base so that the limiting block abuts against the bottom wall of the U-shaped slot of the U-shaped part, and adjust the position of the support on the base so that the support abuts against the outer wall of the sleeve. Position the entire shock absorber assembly structure on the shock absorber clamping and positioning fixture.

[0025] Compared with the prior art, the beneficial effects of the present invention are: it provides a damper clamping and positioning fixture and clamping method, which can clamp and position damper combination structures with different specifications of dampers by changing the positioning bosses, limiting blocks, adjusting the horizontal position of the support and the adapter block, without replacing the entire positioning fixture, thus improving line changeover efficiency, saving manpower, and increasing the flexibility of the entire assembly line; it also eliminates the need to prepare multiple positioning fixtures of different specifications, saving costs. By setting the limiting block and the insertion hole as an insertion joint, and by setting an axial limiting part on the limiting block to limit the limiting block in the vertical direction, the second positioning insertion hole and the first positioning insertion hole can be quickly aligned and connected. A positioning pin is used to quickly position and install the insertion part and the limiting block on the adapter block, improving the disassembly and assembly efficiency of the limiting block, and further improving the assembly line changeover efficiency. By setting a second protrusion on the positioning pin, setting a first protrusion at the opening end of the first positioning hole, and setting a compression elastic element between the two, the compression elastic element always presses against the second protrusion when the positioning pin is pulled outward, thus preventing the positioning pin from coming out; after the positioning pin is released, the compression elastic element automatically rebounds and pushes the positioning pin to quickly reset and position the limit block, saving manpower and further improving the disassembly and assembly efficiency of the limit block. Attached Figure Description

[0026] Figure 1 These are axial cross-sectional and top views of the damper assembly structure in the background art.

[0027] Figure 2 This is a top view of the shock absorber clamping and positioning fixture;

[0028] Figure 3 yes Figure 2 A schematic diagram of the cross-sectional structure;

[0029] Figure 4 yes Figure 3 Enlarged structural diagram of section A in the middle;

[0030] Figure 5 A top view of the assembly structure of the damper clamping and positioning fixture and the damper combination structure;

[0031] Figure 6 A schematic diagram of the assembly cross-sectional structure of the shock absorber clamping and positioning fixture and the combined structure of the shock absorber.

[0032] Figure 7 yes Figure 2 Top view of the central base structure;

[0033] Figure 8 yes Figure 2 Schematic diagram of the intermediate junction block;

[0034] Figure 9 yes Figure 2A schematic diagram of the main structure of the middle limit block;

[0035] Reference numerals: 1-Base; 11-Positioning groove; 12-Second strip hole; 15-Third fastening bolt; 2-Positioning boss; 21-First fastening bolt; 3-Limiting block; 31-Second positioning insertion hole; 33-Insertion part; 34-Axial limiting part; 4-Support member; 41-Supporting surface; 42-First strip hole; 43-Second fastening bolt; 5-Adapter block; 51-Insertion hole; 52-First positioning insertion hole; 53-First protrusion; 6-Positioning pin; 61-First pin segment; 62-Second pin segment; 63-Axial limiting part; 64-Second protrusion; 65-Compression elastic element; 7-Pull ring; 91-Shock absorber; 92-Collar sleeve; 93-U-shaped part. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings and embodiments. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0037] As attached Figure 1-9 As shown, a damper clamping and positioning fixture includes a base 1. A positioning boss 2, a limiting block 3, and a support member 4 are fastened to the top surface of the base 1. The limiting block 3 and the support member 4 are located on opposite sides of the positioning boss 2 in a horizontal direction. The top surface of the base 1 is a limiting plane. It also includes a transition block 5 fastened to the top surface of the base 1 and a positioning pin 6 mounted on the transition block 5. The transition block 5 has an upward-facing insertion hole 51 and a first positioning insertion hole 52 perpendicular to the insertion hole 51. The first positioning insertion hole 52 and the insertion hole 51... 1. The limiting block 3 is provided with a downwardly protruding insertion part 33 and an axial limiting part 34 protruding from the side wall of the insertion part 33. The insertion part 33 is inserted into the insertion hole 51, and the axial limiting part 34 is in contact with the upper surface of the adapter block 5. The insertion part 33 is provided with a second positioning insertion hole 31. The positioning pin 6 is inserted into the first positioning insertion hole 52 and the second positioning insertion hole 31. The support member 4 and the adapter block 5 are adjustable in radial position on the positioning boss 2. The positioning boss 2 is detachably mounted on the base 1.

[0038] The insertion part 33 cooperates with the insertion hole 51 to position the limiting block 3 horizontally. The positioning pin 6 is inserted into the first positioning hole 52 to radially position the pin 6, and the positioning pin 6 is inserted into the second positioning hole 31. The two cooperate to position the insertion part 33 and the limiting block 3 vertically, thereby positioning the limiting block 3 on the adapter block 5. Pulling out the positioning pin 6 from the second positioning hole 31 releases the axial positioning of the insertion part 33 and the limiting block 3. Then, the limiting block 3 can be quickly installed and removed by inserting and removing the limiting block 3. During the insertion of the limiting block 3, the axial limiting part 34 fits against the upper surface of the adapter block 5 to axially limit it, ensuring that the second positioning hole 31 on the insertion part 33 is coaxially aligned with the positioning pin 6 in the first positioning hole 52, which facilitates the accurate insertion of the positioning pin 6 into the second positioning hole 31 to quickly position the limiting block.

[0039] The shape and size of the positioning boss 2 and the circular groove on the bottom surface of the shock absorber 91 are compatible, and the shape and size of the limiting block 3 and the U-shaped groove on the U-shaped part 93 are compatible. When the shock absorber assembly is clamped onto the positioning fixture of this invention, the top surface of the base 1 supports the shock absorber assembly and positions it axially at the upper limit of the shock absorber 91; the positioning boss 2 is inserted into the circular groove on the bottom surface of the shock absorber 91 to position the shock absorber 91 in the horizontal radial direction; the limiting block 3 is engaged in the U-shaped groove of the U-shaped part 93 and fits against the two side walls of the U-shaped groove to position the U-shaped part 93 in a direction perpendicular to the two side walls of the U-shaped groove, preventing the U-shaped part 93 from driving the entire shock absorber assembly to rotate around the positioning boss 2; the limiting block 3 supports the bottom wall of the U-shaped groove of the U-shaped part 93, and the support member 4 supports the outer wall of the sleeve 92. The limiting block 3 and the support member 4 cooperate to support and position the entire shock absorber assembly, ensuring that the axis of the shock absorber 91 is arranged in the vertical direction, thus improving the clamping reliability.

[0040] During the assembly of the vibration damper 91, the base 1 mounts the entire positioning fixture and the vibration damper 91 onto the conveyor line and moves synchronously with the conveyor line. The positioning fixture of this invention can be adapted to the circular grooves on the bottom surface of vibration dampers 91 of different specifications by replacing the positioning bosses 2 with different structures, thus positioning the vibration damper 91 in the horizontal radial direction; it can be adapted to the U-shaped parts 93 of different structures by replacing the limiting blocks 3 with different structures, thus positioning the U-shaped parts 93 and the entire vibration damper assembly structure circumferentially relative to the positioning bosses 2; and it can be adapted to the vibration dampers 91 of different outer diameters by adjusting the radial position of the support member 4 relative to the positioning bosses 2 and the radial position of the adapter block 5 relative to the positioning bosses 2, thus supporting and positioning them. In other words, the positioning fixture of this invention can clamp and position vibration damper assembly structures with different specifications of vibration dampers 91 by replacing the positioning bosses 2 and limiting blocks 3 with different structures and adjusting the horizontal positions of the support member 4 and adapter block 5, without replacing the entire positioning fixture, improving line change efficiency, saving manpower, and increasing the flexibility of the entire assembly line; it also eliminates the need to prepare multiple positioning fixtures of different specifications, saving costs. In addition, by setting the insertion hole 51 to position the limiting block 3 in the horizontal direction, and by setting the axial limiting part 34 on the limiting block 3 to limit the limiting block 3 in the vertical direction, the second positioning insertion hole 31 and the first positioning insertion hole 52 are quickly aligned and connected. The positioning pin 6 is used to quickly position and install the insertion part 33 and the limiting block 3 on the adapter block 5, thereby improving the disassembly and assembly efficiency of the limiting block 3.

[0041] The base 1 supports the shock absorber assembly structure, positioning and installing the entire clamping and positioning fixture of the present invention and the shock absorber assembly structure thereon on the conveyor line. The base 1 can be a frame structure welded from steel materials such as channel steel and steel pipes, but this structure makes it difficult to guarantee the flatness of the base 1 and is complex. To ensure the positioning accuracy of the shock absorber 91, the base 1 generally adopts a steel plate structure, which is simple and easy to manufacture. The positioning boss 2 is used to horizontally and radially position the shock absorber 91 on the base 1. The positioning boss 2 and the base 1 can be plugged into each other or threaded together, or connected by adapters such as pins and bolts. Specifically, the positioning boss 2 and the base 1 are fastened together by a first fastening bolt 21, the center line of which is arranged along the vertical direction, facilitating the installation and removal of the positioning boss 2. The cross-section of the positioning boss 2 is generally a cylindrical structure adapted to the shape and size of the circular groove on the bottom surface of the shock absorber 91. The cylindrical positioning boss 2 is prone to sliding during clamping and tightening, making installation and removal inconvenient. Preferably, the upper sidewall of the positioning boss 2 includes two parallel clamping planes. When installing or removing the positioning boss 2, the two planes on the clamping sidewall are used to twist the positioning boss 2, which is easy and labor-saving and improves the efficiency of installation and removal.

[0042] During the assembly of the vibration damper 91, the positioning boss 2 is inserted into the circular groove on the bottom surface of the vibration damper 91. When the vibration damper 91 is under force, it will exert a certain pressure on the side wall of the positioning boss 2, which can easily cause the first fastening bolt 21 to bend and deform, affecting the positioning accuracy. Preferably, the top surface of the base 1 is provided with a positioning groove 11, and the lower part of the positioning boss 2 is inserted into the positioning groove 11; the side wall of the positioning groove 11 fits against the side wall of the positioning boss 2. The side wall of the positioning groove 11 not only positions the positioning boss 2 in the horizontal direction, but also supports the positioning boss 2 when the side wall of the positioning boss 2 is under pressure, sharing the pressure on the first fastening bolt 21, avoiding deformation of the first fastening bolt 21, ensuring the installation accuracy and reliability of the positioning boss 2, and thus improving the clamping and positioning accuracy of the vibration damper 91.

[0043] The limiting block 3 is used to position the U-shaped part 93 circumferentially on the positioning boss 2. In use, the limiting block 3 is in contact with the bottom and side walls of the U-shaped groove of the U-shaped part 93. The limiting block 3 can be a columnar structure, a cylindrical structure, or a frame structure, etc. The insertion part 33 can be a columnar structure, a frustum structure, or a conical structure, etc., and its cross-section can be circular, elliptical, or rectangular, etc. Preferably, the insertion part 33 is a prism structure, and the shape and size of the insertion hole 51 and the insertion part 33 are compatible. That is, the side wall of the insertion hole 51 is in contact with the side wall of the insertion part 33, horizontally positioning the insertion part 33 and the side wall of the limiting block 3, ensuring that the positioning surface on the side wall of the limiting block 3 is in contact with the inner wall of the U-shaped part 93, circumferentially positioning the U-shaped part 93, and quickly positioning the limiting surface on the limiting block 3.

[0044] The axial limiting part 34 is used to ensure the axial installation accuracy of the limiting block 3 and quickly align the second positioning hole 31 with the first positioning hole 52. The axial limiting part 34 can be a single protrusion structure or multiple protrusion structures arranged circumferentially along the insertion part 33; the axial limiting part 34 can be provided on the insertion part 33 or the limiting block 3. Preferably, the limiting block 3 protrudes from the outer wall of the insertion part 33, and the bottom surface of the limiting block 3 is the axial limiting part 34, which has a simple structure and is easy to process.

[0045] The support member 4 supports the sidewall of the shock absorber assembly structure, and the adapter block 5 connects the limiting block 3 to the base 1. The support member 4 and the adapter block 5 can be of any shape, such as a cuboid, cylinder, or sphere. Both the support member 4 and the adapter block 5 can slide and engage with the base plate 1 along the horizontal depth of the groove on the U-shaped block 3, and are secured in place by positioning components such as pins and bolt stops. Specifically, the sidewall of the support member 4 near the limiting block 3 is a support surface 41; the support member 4 has a first strip-shaped hole 42 extending vertically, with the length of the first strip-shaped hole 42 perpendicular to the support surface 41; a second fastening bolt 43, threadedly connected to the base 1, is provided within the strip-shaped hole 42, and the support member 4 is securely connected to the base 1 by the second fastening bolt 43. Since the limiting block 3 is installed on the adapter block 5, it is not convenient to set a strip hole on the adapter block 5. Therefore, the base 1 is provided with a second strip hole 12 that runs through the vertical direction. The length direction of the second strip hole 12 is perpendicular to the support surface 41. A third fastening bolt 15 is provided in the second strip hole 12 and is threadedly connected to the adapter block 5. The adapter block 5 is fastened to the base 1 by the third fastening bolt 15.

[0046] The adapter block 5 is used to connect the limiting block 3 to the base 1. The horizontal position of the limiting block 3 is adjusted by adjusting the position of the adapter block 5 on the base 1. The first positioning hole 52 is used to position the positioning pin 6. The second positioning hole 31 cooperates with the positioning pin 6 to position the limiting block 3 in the vertical direction. The diameter of the first positioning hole 52 is greater than or equal to the diameter of the second positioning hole 31. The positioning pin 6 can be a light shaft structure or a stepped shaft structure. When the positioning pin 6 is pulled out from the second positioning hole 31, it is easy to fall off and be lost from the first positioning hole 52. Preferably, the positioning pin 6 includes a first pin segment 61 and a second pin segment 62 that are axially adjacent and coaxially arranged, and also includes an axial limiting portion 63 protruding from the outer wall of the first pin segment 61 and a second protrusion 64 protruding from the side wall of the second pin segment 62; the first pin segment 61 is inserted into the second positioning hole 31, the second pin segment 62, the axial limiting portion 63 and the second protrusion 64 are all located in the first positioning hole 52, and one end of the second pin segment 62 away from the first pin segment 61 extends out of the first positioning hole 52; the open end of the first positioning hole 52 is provided with a radially inwardly protruding first protrusion 53; a compression elastic member 65 is provided in the first positioning hole 52, one end of the compression elastic member 65 abuts against the second protrusion 64, and the other end of the compression elastic member 65 abuts against the first protrusion 53. When replacing the limiting block 3, pull the second pin segment 62 horizontally outward to disengage the first pin segment 61 from the second positioning socket 31, releasing and holding the limiting block 3 in place. After pulling the original limiting block 3 out of the insertion hole 51, insert the new limiting block 3 into the insertion hole 51, ensuring the lower end face of the limiting block 3 abuts against the upper surface of the adapter block 5. Finally, release the second pin segment 62, causing the compression elastic element 65 to automatically spring back and push the second protrusion 64 and the entire positioning pin 6 to quickly reset. The first pin segment 61 resets and inserts into the second positioning socket 31 to position the limiting block 3, saving manpower and further improving the efficiency of disassembling and assembling the limiting block 3. Simultaneously, the compression elastic element 65 remains compressed, pressing inward against the second protrusion 64 to prevent the positioning pin 6 from falling out. Alternatively, a limiting boss can be provided on the wall of the first positioning socket 52, with the axial limiting part 63 abutting against the limiting step to achieve axial positioning of the positioning pin 6.

[0047] As a further preferred embodiment, a ring plate is coaxially disposed on the first pin segment 61, protruding from the sidewalls of the first pin segment 61 and the second pin segment 62. The outer contour of the cross-section of the ring plate is adapted to the shape and size of the first positioning hole 52. The ring plate is the second protrusion 64, and the end face of the ring plate away from the second pin segment 62 is the axial limiting part 63. This simplifies the structure of the positioning pin 6 and saves production costs. The adaptation of the outer contour of the cross-section of the ring plate to the shape and size of the first positioning hole 52 means that the sidewall of the first positioning hole 52 is attached to the sidewall of the ring plate, thereby radially positioning the ring plate and the positioning pin 6.

[0048] The compression elastic element 65 can be a strip-shaped elastic element, which can be provided singly or in multiples along the circumference of the second pin segment 62. However, this type of compression elastic element 65 is prone to sliding within the first positioning hole 52 under pressure, and is inconvenient to assemble. Preferably, the compression elastic element 65 is a compression elastic sleeve fitted onto the second pin segment 62, which radially limits its movement. This structure is simple and easy to assemble. The compression elastic sleeve can be an elastic rubber sleeve or a compression spring.

[0049] To facilitate pulling the positioning pin 6, a pull handle structure can be provided at the end of the second pin segment 62 extending out of the first positioning hole 52. Preferably, a pull ring 7 is provided at the end of the second pin segment 62 extending out of the first positioning hole 52, which is simple and reliable.

[0050] A method for clamping and positioning a shock absorber, employing any of the above-mentioned shock absorber clamping and positioning fixtures, includes the following steps:

[0051] S1. Position and install the base 1 of the shock absorber clamping and positioning fixture on the prefabrication station of the conveyor line;

[0052] S2. Select the positioning boss 2 that matches the specifications of the shock absorber 91 and assemble it on the base 1. Select the limiting block 3 that matches the U-shaped slot of the U-shaped part 93 and assemble it on the adapter block 5.

[0053] Adjust the positions of the support member 4 and the adapter block 5 on the base 1 so that the distance between the support member 4 and the center line of the positioning boss 2 is greater than the radius of the outer wall of the sleeve 92, and the distance between the limiting block 3 and the center line of the positioning boss 2 is greater than the distance between the bottom wall of the U-shaped groove of the U-shaped member 93 and the center line of the shock absorber 91.

[0054] S3. Align the circular groove on the bottom surface of the pre-clamped and positioned shock absorber 91 with the positioning boss 2 so that the positioning boss 2 is inserted into the circular groove on the bottom surface of the shock absorber 91. Align the U-shaped slot on the U-shaped part 93 with the limiting block 3 so that the limiting block 3 is inserted into the U-shaped slot of the U-shaped part 93.

[0055] S4. Adjust the position of the adapter block 5 on the base 1 so that the limiting block 3 abuts against the bottom wall of the U-shaped slot of the U-shaped part 93. Adjust the position of the support 4 on the base 1 so that the support 4 abuts against the outer wall of the sleeve 92. Position the entire shock absorber assembly structure on the shock absorber clamping and positioning fixture.

[0056] For different models of shock absorber assembly structures, the shock absorber assembly structures with different specifications of shock absorbers 91 can be clamped by changing the positioning boss 2 and the limiting block 3, and adjusting the horizontal position of the support 4 and the adapter block 5. This improves the line change efficiency, saves manpower, and increases the flexibility of the entire assembly line. There is no need to prepare multiple positioning fixtures of different specifications, thus saving costs.

[0057] In this invention, "upper," "lower," "top," and "bottom" refer to relative positional relationships and should not be construed as limitations on specific locations. The embodiments described in this specific implementation are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made to the structure, shape, and principle of the present invention should be included within the scope of protection of the present invention.

Claims

1. A damper clamping and positioning fixture, comprising a base (1), wherein a positioning boss (2), a limiting block (3), and a support member (4) are fastened to the top surface of the base (1), the limiting block (3) and the support member (4) being located on both sides of the positioning boss (2) in the horizontal direction; the top surface of the base (1) is a limiting plane; characterized in that: It also includes a transition block (5) fastened to the top surface of the base (1) and a positioning pin (6) installed on the transition block (5); the transition block (5) is provided with an upward-facing insertion hole (51) and a first positioning insertion hole (52) perpendicular to the insertion hole (51), the first positioning insertion hole (52) and the insertion hole (51) are connected; the limiting block (3) is provided with a downward-protruding insertion part (33) and an axial limiting part (34) protruding from the side wall of the insertion part (33), the insertion part (33) is inserted into the insertion hole (51), and the axial limiting part (34) is in contact with the upper surface of the transition block (5); the insertion part (33) is provided with a second positioning insertion hole (31); the positioning pin (6) is inserted into the first positioning insertion hole (52) and the second positioning insertion hole (31); The support member (4) and the adapter block (5) are adjustable in the radial direction of the positioning boss (2); the positioning boss (2) is detachably mounted on the base (1); The bottom of the shock absorber (91) has an upwardly recessed circular groove. The lower part of the outer cylinder of the shock absorber (91) is fitted with a shock absorber bracket. The shock absorber bracket includes a sleeve (92) fitted and welded to the outer cylinder of the shock absorber and a U-shaped piece (93) welded to the outside of the sleeve (92). The U-shaped groove on the U-shaped piece (93) faces outward. The shock absorber assembly structure includes the shock absorber (91), the sleeve (92) and the U-shaped piece (93). In use, adjust the position of the adapter block (5) on the base (1) so that the limiting block (3) abuts against the bottom wall of the U-shaped slot of the U-shaped part (93), and adjust the position of the support (4) on the base (1) so that the support (4) abuts against the outer wall of the sleeve (92) to position the entire shock absorber assembly structure on the shock absorber clamping and positioning fixture.

2. The damper clamping and positioning fixture according to claim 1, characterized in that: The positioning boss (2) and the base (1) are fastened together by a first fastening bolt (21), the center line of which is arranged in the vertical direction; The upper sidewall of the positioning boss (2) includes two parallel clamping planes.

3. The damper clamping and positioning fixture according to claim 2, characterized in that: The top surface of the base (1) is provided with a positioning groove (11), and the lower part of the positioning boss (2) is inserted into the positioning groove (11); the side wall of the positioning groove (11) is in contact with the side wall of the positioning boss (2).

4. The damper clamping and positioning fixture according to claim 1, characterized in that: The plug-in part (33) has a prism structure, and the shape and size of the plug-in hole (51) and the plug-in part (33) are compatible.

5. The damper clamping and positioning fixture according to claim 1, characterized in that: The limiting block (3) protrudes from the outer wall of the insertion part (33), and the bottom surface of the limiting block (3) is the axial limiting part (34).

6. The damper clamping and positioning fixture according to claim 1, characterized in that: The positioning pin (6) includes a first pin segment (61) and a second pin segment (62) that are axially adjacent and coaxially arranged, and also includes an axial limiting part (63) protruding from the outer wall of the first pin segment (61) and a second protrusion (64) protruding from the side wall of the second pin segment (62). The first pin segment (61) is inserted into the second positioning hole (31). The second pin segment (62), the axial limiting part (63) and the second protrusion (64) are all located in the first positioning hole (52). The end of the second pin segment (62) away from the first pin segment (61) extends out of the first positioning hole (52). The first positioning hole (52) has a radially inwardly protruding first protrusion (53) at its opening end; the first positioning hole (52) is provided with a compression elastic member (65), one end of the compression elastic member (65) abuts against the second protrusion (64), and the other end of the compression elastic member (65) abuts against the first protrusion (53).

7. The damper clamping and positioning fixture according to claim 6, characterized in that: The first pin segment (61) is coaxially provided with an annular plate that protrudes from the side wall of the first pin segment (61) and the side wall of the second pin segment (62). The outer contour of the cross section of the annular plate is adapted to the shape and size of the first positioning hole (52). The annular plate is the second protrusion (64), and the end face of the annular plate away from the second pin segment (62) is the axial limiting part (63).

8. The damper clamping and positioning fixture according to claim 6, characterized in that: The compression elastic element (65) is a compression elastic sleeve fitted on the second pin segment (62).

9. The damper clamping and positioning fixture according to claim 6, characterized in that: The end of the second pin segment (62) extending out of the first positioning hole (52) is provided with a pull ring (7).

10. A method for clamping and positioning a vibration damper using the vibration damper clamping and positioning fixture as described in any one of claims 1-9, characterized in that, Including the following steps: S1. Position and install the base (1) of the damper clamping and positioning fixture on the prefabrication station of the conveyor line; S2. Select the positioning boss (2) that matches the specifications of the shock absorber (91) and assemble it on the base (1). Select the limiting block (3) that matches the U-shaped slot of the U-shaped part (93) and assemble it on the adapter block (5). Adjust the positions of the support (4) and the adapter (5) on the base (1) so that the distance between the support (4) and the center line of the positioning boss (2) is greater than the radius of the outer wall of the sleeve (92), and the distance between the limiting block (3) and the center line of the positioning boss (2) is greater than the distance between the bottom wall of the U-shaped groove of the U-shaped part (93) and the center line of the shock absorber (91). S3. Align the circular groove on the bottom surface of the pre-clamped and positioned damper (91) with the positioning boss (2) so that the positioning boss (2) is inserted into the circular groove on the bottom surface of the damper (91). Align the U-shaped slot on the U-shaped part (93) with the limiting block (3) so that the limiting block (3) is inserted into the U-shaped slot of the U-shaped part (93). S4. Adjust the position of the adapter block (5) on the base (1) so that the limiting block (3) abuts against the bottom wall of the U-shaped slot of the U-shaped part (93), and adjust the position of the support (4) on the base (1) so that the support (4) abuts against the outer wall of the sleeve (92) to position the entire shock absorber assembly structure on the shock absorber clamping and positioning fixture.

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