A clamping device for a car holder

Abstract

The utility model relates to the clamping technical field of automobile support, specifically relates to the clamping device of automobile support, including support plate, the table board set up on support plate and the base set up on table board, support plate has the support groove, and the support groove is along the top surface of support plate and is opened to the middle part of support plate, and the table board is sleeved in the support groove, and the outside of table board is provided with telescopic cylinder, and telescopic cylinder is installed on the top surface of support plate, and the support plate is provided with the pressing plate and support respectively on telescopic cylinder, and the other end of pressing plate is provided with the pressing block, support plate is provided with locking mechanism, and locking mechanism includes the support pipe set up below support plate, a plurality of clamping pieces set up in support pipe, the cylinder set up below clamping piece, the fixed shaft that the cylinder is sleeved, the support ring and fixed ring that cylinder is respectively sleeved on and the spring that sets up between support ring and fixed ring. The utility model provides a kind of clamping device of automobile support, and table board is replaced conveniently, and it is convenient to quickly install or unload the table board.

Description

Technical Field

[0001] This utility model relates to the field of clamping technology for automobile brackets, and more specifically to a clamping device for automobile brackets. Background Technology

[0002] As a crucial component of automotive construction, automotive brackets are responsible for tightly connecting and effectively supporting core components such as the chassis, body, powertrain, and various electronic devices. Their core functions include ensuring the precise positioning of each component, efficiently transmitting various loads, and effectively absorbing vibrations generated during driving, thereby ensuring the stable operation of all systems and overall safety of the vehicle under complex and changing operating conditions. Based on differences in installation location and load-bearing function, automotive brackets can be categorized into several types, such as powertrain brackets, chassis suspension brackets, and body structure brackets. This classification not only allows for the separate support and connection of alternators, suspension systems, and body frames, but also results in significant differences in shape design, size specifications, thickness selection, and material properties, ensuring that each bracket can play its optimal role in its specific application scenario, thus comprehensively improving the overall performance and reliability of the vehicle. Rapid positioning of automotive brackets can be achieved, greatly simplifying the processing steps and making the processing of automotive brackets more convenient and efficient, ultimately significantly improving the overall production efficiency of automotive brackets.

[0003] In the manufacturing of automotive brackets, clamping devices are used to fix the brackets in place, enabling rapid positioning and greatly simplifying the manufacturing process, making the processing of automotive brackets more convenient and efficient. Clamping devices are categorized by their level of automation into manual clamping devices, electric clamping devices, and pneumatic / hydraulic clamping devices. Manual clamping devices rely entirely on manual operation, making the process cumbersome. Electric clamping devices use a motor as a power source, employing lead screws and gears to achieve the clamping action, offering a high level of automation. Pneumatic / hydraulic clamping devices utilize power generated by air or oil pumps to drive telescopic cylinders to complete the clamping operation, characterized by rapid response. Manual clamping devices not only significantly increase the labor intensity of workers but also affect clamping efficiency due to the limitations of manual operation, thus slowing down the entire production process. While electric clamping devices excel in clamping accuracy, their high cost, requiring servo motors, controllers, and precision transmission components, often significantly increases production costs, hindering cost control. In comparison, although pneumatic / hydraulic clamping devices are slightly inferior to electric clamping devices in terms of clamping accuracy, the required components such as cylinders, valves, and pipes are relatively inexpensive, and the air circuit design is simpler, resulting in lower maintenance costs. Therefore, pneumatic / hydraulic clamping devices are more commonly chosen for automotive brackets in practical applications.

[0004] In practical use, due to the wide variety of car brackets, the clamping device often needs to replace the base according to different car bracket types. However, the base replacement process is very time-consuming. To improve the efficiency of base replacement, the entire table plate installed on the base is removed first, and then another table plate with a pre-assembled base is installed to reduce replacement time. However, since the telescopic cylinder is also installed on the table plate, this replacement method affects the use of the telescopic cylinder and increases the difficulty of adjustment. In addition, the replaced table plate needs to be fixed. The common method is to use bolts to fix the table plate. Although this method can ensure the stability of the table plate, the installation and removal of bolts is cumbersome, which will affect the installation efficiency of the table plate and prolong the entire replacement process. Therefore, the existing car bracket clamping device still has room for improvement in practical applications. There is an urgent need to design a more convenient base replacement method to facilitate quick installation or removal of the table plate, so as to improve the production efficiency of car brackets. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this utility model provides a clamping device for a car bracket that facilitates easy tabletop replacement and quick installation or removal of the tabletop, thereby overcoming the deficiencies in existing technologies.

[0006] The technical solution adopted by this utility model is as follows: a clamping device for an automobile bracket, including a support plate, a table plate provided on the support plate, and a base provided on the table plate. The support plate has a support groove extending from the top surface of the support plate to its middle portion. The table plate is fitted into the support groove. A telescopic cylinder is provided on the outer side of the table plate and is mounted on the top surface of the support plate. A pressure plate and a bracket are respectively provided on the telescopic cylinder. The middle portion of the pressure plate is hinged to the top of the bracket, and the bottom end of the bracket is mounted on the cylinder body of the telescopic cylinder. One end of the pressure plate is hinged to the telescopic rod of the telescopic cylinder, and the other end of the pressure plate is provided with a pressure block. A locking mechanism is provided on the support plate, including a support provided below the support plate. The system comprises a tube, several clamps inside the support tube, a cylinder below the clamps, a fixed shaft inside the cylinder, support rings and fixed rings respectively fitted on the cylinder, and a spring between the support rings and the fixed rings. The top inner cavity of the support tube has a conical structure, and the diameter of the inner cavity of the support tube gradually decreases towards the table. The outer shape of the clamps matches the shape of the top inner cavity of the support tube. The inner side of the clamps contacts the fixed shaft, and the top of the fixed shaft is mounted on the table. The support rings, fixed rings, and springs are all fitted inside the support tube. The support rings are mounted on the inner wall of the support tube, and the fixed rings are mounted on the top of the cylinder. The two sides of the springs contact the support rings and the table respectively, and the top of the fixed rings contacts the clamps.

[0007] Preferably, a horizontal plate is provided below the support plate, and an adjustment mechanism is provided between the horizontal plate and the support plate. The adjustment mechanism includes two vertical plates on the horizontal plate, support blocks on the two vertical plates respectively, a hinge seat above the support block, a baffle hinged to the hinge seat, and two hinge shafts on the support plate. The two hinge shafts are respectively installed on both sides of the support plate, the support plate is located between the two vertical plates, and both sides of the support plate are in contact with the two vertical plates respectively. A through hole is opened in the middle of the vertical plate, and the through hole is fitted onto the hinge shaft. The diameter of the hinge shaft matches the diameter of the through hole. The support block is located below the support plate, and the bottom surface of the support plate is in contact with the support block. The support block is installed on the vertical plate, the hinge seat is installed on the top of the vertical plate, one end of the baffle is hinged to the hinge seat, the other end of the baffle is located above the support plate, and the bottom surface of the baffle is in contact with the top surface of the vertical plate.

[0008] Preferably, two fixing blocks are provided on one side of the hinge shaft. The two fixing blocks are respectively installed on the outer side of the two vertical plates. A first threaded hole is provided on the fixing block, and a first bolt is threaded into the first threaded hole. One side of the first bolt is in contact with the support block. A second threaded hole is provided on the top surface of the vertical plate, and a second bolt is threaded into the second threaded hole. An eccentric plate is provided on the second bolt, and a through hole is provided on the eccentric plate. The through hole is fitted onto the second bolt, and the diameter of the second bolt matches the diameter of the through hole.

[0009] Preferably, the horizontal plate is provided with two first handles, which are respectively installed on both sides of the horizontal plate, and the two vertical plates are located between the two first handles. The table is provided with two second handles, which are respectively installed on both sides of the horizontal plate, and the base is located between the two first handles.

[0010] Preferably, the bottom of the cylinder extends out from the support tube, and a ring is fitted at the bottom end of the cylinder. The ring is mounted on the cylinder, and a third threaded hole is opened on the support tube below the support ring. A third bolt is threaded into the third threaded hole, and one side of the third bolt is in contact with the cylinder.

[0011] Preferably, the support plate has a sleeve hole, through which the support tube communicates with the support groove. The sleeve hole is fitted onto the fixed shaft, and the diameter of the sleeve hole matches the diameter of the fixed shaft. The bottom end of the fixed shaft has a guide groove, the diameter of which gradually decreases towards the tabletop. The inner shape of the support groove matches the outer shape of the tabletop, and the bottom end of the tabletop has a guide groove, which gradually decreases in size away from the fixed shaft.

[0012] The beneficial effects of this utility model are as follows: First, the base provides support and positioning for the car bracket. The telescopic cylinder, pressure plate, and bracket allow for the use of pressure blocks to clamp and fix the car bracket to the base. Since the telescopic cylinder is mounted on the support plate, the number of components mounted on the table is reduced, facilitating table replacement. Furthermore, the support tube, clamping plate, support ring, and spring form a locking mechanism for the fixed shaft. This allows the fixed shaft to move along the support plate towards the fixed seat. If the fixed shaft moves in the opposite direction, the clamping plate anchors it within the support tube, locking the fixed shaft inserted into the support tube and allowing for quick assembly of the table onto the support plate. The cylinder and fixing ring form a locking release mechanism for the fixed shaft. Pulling the cylinder releases the spring's pressure on the clamping plate, allowing the fixed shaft to be removed, thus quickly removing the table from the support plate.

[0013] Secondly, this invention uses a vertical plate and hinge shaft to hinge the support plate to the horizontal plate. Support blocks and baffles further support the support plate, providing multiple support methods to adjust the orientation of the support plate and tabletop, facilitating the processing of the clamped car bracket. A hinged seat hinges the baffle to the vertical plate, allowing the baffle to rotate around the top of the vertical plate. The bottom surface of the baffle abuts against the top surface of the vertical plate, constraining its rotation and allowing the support plate to be placed on the baffle for support. Furthermore, the invention uses a fixing block and a first bolt to press and fix the support plate placed on the support block, and a second bolt and an eccentric plate to press and fix the support plate placed on the baffle, preventing wobbling during use and improving the stability of the support plate.

[0014] Furthermore, this invention features two first handles on the horizontal plate for gripping and lifting the horizontal plate, and two second handles on the tabletop for gripping and lifting the tabletop. A ring is provided for pulling the cylinder, and a third bolt is provided to press and fix the cylinder to the support tube. This secures the cylinder when the tabletop is removed, maintaining the tabletop in a released state for easy removal. Additionally, the invention utilizes a sleeve hole on the support plate for inserting a fixing shaft into the support tube, and guide grooves on the fixing shaft and tabletop to guide the fixing shaft into the sleeve hole and guide the tabletop into the support groove, improving the ease of tabletop assembly. Attached Figure Description

[0015] Figure 1 This is a first perspective view of the present invention.

[0016] Figure 2 for Figure 1 Enlarged diagram of point A in the middle.

[0017] Figure 3 This is a second perspective view of the present invention.

[0018] Figure 4 This is an assembly cross-sectional view of the support plate and the fixing plate in this utility model.

[0019] Figure 5 for Figure 4 Enlarged diagram of point B in the middle.

[0020] Figure 6 This is an exploded view of the assembly of the clamping piece and the cylinder in this utility model. Detailed Implementation

[0021] like Figures 1 to 6As shown, a clamping device for a car bracket includes a support plate 1, a table 2 mounted on the support plate 1, and a base 3 mounted on the table 2. The top shape of the base 3 matches the bottom shape of the car bracket, so as to support and position the car bracket using the base 3. The support plate 1 has a support groove 4, which extends from the top surface of the support plate 1 to the middle of the support plate 1. The table 2 is fitted into the support groove 4. A telescopic cylinder 5 is provided on the outer side of the table 2. The telescopic cylinder 5 includes a cylinder body, a piston mounted inside the cylinder body, and a telescopic rod mounted on the piston. The piston is squeezed by hydraulic or pneumatic pressure to adjust the telescopic amount of the cylinder. The telescopic cylinder 5 is installed on the top surface of the support plate 1. The telescopic cylinder 5 is equipped with a pressure plate 6 and a bracket 7. The middle part of the pressure plate 6 is hinged to the top of the bracket 7, and the bottom end of the bracket 7 is installed on the cylinder body of the telescopic cylinder 5. One end of the pressure plate 6 is hinged to the telescopic rod of the telescopic cylinder 5, and the other end of the pressure plate 6 is equipped with a pressure block 8, which is installed on the bottom surface of the pressure plate 6. The bottom shape of the pressure block 8 matches the top shape of the car bracket, so that the pressure block 8 can be used to squeeze the car bracket, thereby clamping and fixing the car bracket to the base 3. Since the telescopic cylinder 5 is installed on the support plate 1, the number of parts assembled on the table 2 is reduced, thereby facilitating the replacement of the table 2. The support plate 1 is equipped with a locking mechanism, which includes the support plate 1. The support tube 9 is located below the support plate 1. Several clamping pieces 10 are installed inside the support tube 9. A cylinder 11 is located below the clamping pieces 10. A fixed shaft 12 is installed inside the cylinder 11. Support rings 13 and 14 are respectively installed on the cylinder 11, and a spring 15 is installed between the support rings 13 and 14. The top of the support tube 9 is mounted on the support plate 1. The inner cavity of the top of the support tube 9 has a conical structure, and the diameter of the inner cavity gradually decreases towards the table 2. Several clamping pieces 10 are evenly arranged on the top of the support tube 9 along its circumference. The outer shape of the clamping pieces 10 matches the shape of the inner cavity of the top of the support tube 9. The inner surface of the clamping pieces 10 is... The structure has an arc surface. The inner side of the clamping piece 10 contacts the fixed shaft 12. The top of the fixed shaft 12 is mounted on the table 2. The support ring 13, the fixed ring 14, and the spring 15 are all fitted inside the support tube 9. The support ring 13 is mounted on the inner wall of the support tube 9. The inner diameter of the support ring 13 matches the outer diameter of the cylinder 11. The fixed ring 14 is mounted on the top of the cylinder 11. The outer diameter of the fixed ring 14 matches the inner diameter of the support tube 9. The two sides of the spring 15 contact the support ring 13 and the table 2 respectively. The spring 15 is fitted on the cylinder 11. The top of the fixed ring 14 contacts the clamping piece 10. The clamping piece 10 is pressed against the top of the inner cavity of the support tube 9 by the spring 15.During the installation of the tabletop 2 onto the support plate 1, the fixing shaft 12 needs to be inserted into the support tube 9 along the direction from the base 3 toward the support plate 1. During this insertion process, the fixing shaft 12 pushes the clamping piece 10 from the top of the support tube 9 toward the lower middle part of the support tube 9. At this time, the clamping piece 10 does not cause any obstruction or interference to the insertion action of the fixing shaft 12. After the tabletop 2 is installed in the support plate 1, if the fixing shaft 12 is pulled to move along the direction from the support plate 1 toward the fixing base 3, due to the elastic force of the spring 15, the spring 15 drives the clamping piece 10 to press against the fixing shaft 12. In this state, the movement of the fixing shaft 12 will drive the clamping piece 10 toward the base 12. The top end of the support tube 9 moves. Since the top of the support tube 9 is conical, the clamping plate 10 moves towards the top end of the support tube 9, simultaneously pressing against the fixed shaft 12. This restricts the movement of the fixed shaft 12 along the support plate 1 towards the fixed seat 3, anchoring the fixed shaft 12 to the support tube 9 and locking the tabletop 2 onto the support plate 1 to meet the assembly requirements of the tabletop 2. If it is necessary to remove the tabletop 2 from the support plate 1, the cylinder 11 is pulled to release the spring 15's pressure on the clamping plate 10, thereby releasing the anchoring of the clamping plate 10 to the fixed shaft 12, allowing the tabletop 2 to be removed, thus simplifying the assembly between the tabletop 2 and the support plate 1.

[0022] In this embodiment, a horizontal plate 16 is provided below the support plate 1, and an adjustment mechanism is provided between the horizontal plate 16 and the support plate 1. The adjustment mechanism includes two vertical plates 17 provided on the horizontal plate 16, support blocks 18 respectively provided on the two vertical plates 17, a hinge seat 19 provided above the support block 18, a baffle 20 hinged on the hinge seat 19, and two hinge shafts 21 provided on the support plate 1. The two hinge shafts 21 are respectively installed on both sides of the support plate 1. The support plate 1 is located between the two vertical plates 17, and both sides of the support plate 1 are in contact with the two vertical plates 17. A through hole is opened in the middle of the vertical plate 17, and the through hole is fitted onto the hinge shaft 21. The diameter of the hinge shaft 21 matches the diameter of the through hole, thereby hinged the support plate 1 between the two vertical plates 17. The support block 18 is located below the support plate 1, and the bottom surface of the support plate 1 is in contact with the support block 18. The support block 18 is installed on the vertical plate 17 to adjust the support plate 1. The support, hinge seat 19, is mounted on the top of the vertical plate 17. One end of the baffle 20 is hinged to the hinge seat 19, and the other end of the baffle 20 is located above the support plate 1. The bottom surface of the baffle 20 is in contact with the top surface of the vertical plate 17, thus using the baffle 20 to provide an inclined support method for the support plate 1. That is, by pushing or pulling the support plate 1 to move it above the baffle 20, and then placing the support plate 1 on the baffle 20, the vertical plate 17 prevents the baffle 20 from rotating, so that the baffle 20 can be used to support the support plate 1, so as to provide multiple support methods to adjust the orientation of the support plate 1 and the table 2. In addition, in order to facilitate the release of the support plate 1 by the baffle 20, the hinge seat 19 is located outside the support plate 1, and the height of the support plate 1 is not greater than the height of the hinge seat 19. By rotating the baffle 20, the other end of the baffle 20 can be rotated to the side of the vertical plate 17 away from the support plate 1, so as to release the support plate 1 by the baffle 20.

[0023] Specifically, two fixing blocks 22 are provided on one side of the hinge shaft 21. The two fixing blocks 22 are respectively installed on the outer side of the two vertical plates 17. A first threaded hole is provided on the fixing block 22. A first bolt 23 is threaded in the first threaded hole. One side of the first bolt 23 contacts the support block 18 so as to press the support plate 1 between the two vertical plates 17. A second threaded hole is provided on the top surface of the vertical plate 17. A second bolt 24 is threaded in the second threaded hole. An eccentric plate 25 is provided on the second bolt 24. A through hole is provided on the eccentric plate 25. The through hole is fitted on the second bolt 24. The diameter of the second bolt 24 matches the diameter of the through hole. Thus, the support plate 1 is pressed on the baffle 20 by means of the eccentric plate 25. The shortest diameter of the eccentric plate 25 is not greater than the distance between the center of the second threaded hole and the vertical plate 17.

[0024] Please refer to it again. Figure 1 , 34. The horizontal plate 16 is provided with two first handles 26, which are respectively installed on both sides of the horizontal plate 16. The two vertical plates 17 are located between the two first handles 26 so that the horizontal plate 16 can be picked up by holding the first handles 26. The table 2 is provided with two second handles 27, which are respectively installed on both sides of the horizontal plate 16. The base 3 is located between the two first handles 26 so that the table 2 can be picked up by holding the second handles 27.

[0025] In this embodiment, the bottom of the cylinder 11 extends out from the support tube 9. A ring 28 is fitted onto the bottom end of the cylinder 11. The ring 28 is mounted on the cylinder 11. The outer diameter of the ring 28 is not less than the inner diameter of the support tube 9, so as to pull the cylinder 11 and prevent the cylinder 11 from penetrating into the support tube 9. A third threaded hole is provided on the support tube 9 below the support ring 13. A third bolt 29 is threaded into the third threaded hole. One side of the third bolt 29 contacts the cylinder 11 so as to press and fix the cylinder 11 onto the support tube 9.

[0026] Specifically, the support plate 1 has a sleeve hole 30, and the support tube 9 is connected to the support groove 4 through the sleeve hole 30. The sleeve hole 30 is fitted onto the fixed shaft 12, and the diameter of the sleeve hole 30 matches the diameter of the fixed shaft 12 so that the fixed shaft 12 can be inserted into the support tube 9. The bottom end of the fixed shaft 12 has a guide groove 31, and the diameter of the guide groove 31 gradually decreases along the direction close to the table 2 so as to guide the fixed shaft 12 into the sleeve hole 30. The inner cavity shape of the support groove 4 matches the outer shape of the table 2, and the bottom end of the table 2 has a guide groove, which gradually decreases along the direction away from the fixed shaft 12 so as to guide the table 2 to be fitted into the support groove 4.

[0027] The assembly and replacement methods for this product are as follows: (e.g.) Figures 1 to 6As shown, firstly, by holding the first handle 26, the horizontal plate 16 is placed steadily on the workbench, and the horizontal plate 16 is fixed to the workbench using screws or other fastening components. Next, according to the processing requirements of the car bracket, a table plate 2 equipped with a base 3 that meets the support and positioning requirements of the car bracket is selected. By holding the second handle 27, the table plate 2 is placed into the support groove 4 opened in the support plate 1. At the same time, the fixing shaft 12 is inserted into the support tube 9 through the sleeve hole 20, so that the lower middle part of the fixing shaft 12 is inserted into the cylinder 11. During this insertion process, since the fixing shaft 12 pushes the clamping piece 10 to move from the top of the support tube 9 toward the lower middle part of the support tube 9, the clamping piece 10 will not cause any form of obstruction or interference to the insertion action of the fixing shaft 12. Next, according to the compression requirements of the car bracket, the pressure block 8 that conforms to the compression of the car bracket is installed on the side of the pressure plate 6 away from the telescopic cylinder 5 to complete the assembly of this product. The car bracket is then placed on the base 3, and the telescopic cylinder 5 is controlled to extend and retract to compress and fix the car bracket on the base 3, thus facilitating the processing of the car bracket. If it is necessary to replace the base 3, the anchoring effect of the clamp 10 on the fixed shaft 12 is released by pulling down the cylinder 11 and the ring 28, and then the cylinder 11 is pressed onto the support tube 9 by tightening the third bolt 29 so that the clamp 10 remains in the released state, thereby removing the table plate 2 equipped with the base 3 for replacement. The whole process is simple and efficient.

[0028] In this embodiment, the car bracket is supported and positioned by the base 3. The car bracket is clamped and fixed on the base 3 by the pressure block 8 through the telescopic cylinder 5, pressure plate 6 and bracket 7. Since the telescopic cylinder 5 is installed on the support plate 1, the number of parts assembled on the table 2 is reduced, which makes it convenient to replace the table 2. Furthermore, this utility model uses a locking mechanism for the fixed shaft 12, consisting of a support tube 9, a clamping piece 10, a support ring 13, and a spring 15. This allows the fixed shaft 12 to move along the support plate 1 toward the fixed seat 3. If the fixed shaft 12 moves in the opposite direction, the clamping piece 10 will anchor the fixed shaft 12 inside the support tube 9, thereby locking and fixing the fixed shaft 12 inserted into the support tube 9. This allows the tabletop 2 to be quickly assembled onto the support plate 1. The fixed shaft 12 is also released by a locking mechanism consisting of a cylinder 11 and a fixing ring 14. By pulling the cylinder 11, the squeezing action of the spring 15 on the clamping piece 10 is released, allowing the fixed shaft 12 to be removed, thus quickly removing the tabletop 2 from the support plate 1.

[0029] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the patent claims of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. A clamping device for an automobile bracket, comprising a support plate (1), a table (2) disposed on the support plate (1), and a base (3) disposed on the table (2), characterized in that: The support plate (1) is provided with a support groove (4), which extends from the top surface of the support plate (1) to the middle of the support plate (1). The table (2) is fitted into the support groove (4). A telescopic cylinder (5) is provided on the outer side of the table (2). The telescopic cylinder (5) is installed on the top surface of the support plate (1). A pressure plate (6) and a bracket (7) are respectively provided on the telescopic cylinder (5). The middle part of the pressure plate (6) is hinged to the top of the bracket (7). The bottom end of the bracket (7) is installed on the cylinder body of the telescopic cylinder (5). One end of the pressure plate (6) is hinged to the telescopic rod of the telescopic cylinder (5). The other end of the pressure plate (6) is provided with a pressure block (8). The support plate (1) is provided with a locking mechanism, which includes a support tube (9) provided below the support plate (1), several clamps (10) provided inside the support tube (9), a cylinder (11) provided below the clamps (10), a fixed shaft (12) fitted inside the cylinder (11), a support ring (13) and a fixed ring (14) respectively fitted on the cylinder (11), and a spring (15) provided between the support ring (13) and the fixed ring (14). The top inner cavity of the support tube (9) adopts a conical structure, and the inner diameter of the support tube (9) gradually increases along the direction close to the table (2). The size of the clip (10) is reduced, and the shape of the clip (10) matches the inner cavity shape of the top of the support tube (9). The inner side of the clip (10) is in contact with the fixed shaft (12). The top of the fixed shaft (12) is mounted on the table (2). The support ring (13), the fixed ring (14) and the spring (15) are all fitted inside the support tube (9). The support ring (13) is mounted on the inner wall of the support tube (9). The fixed ring (14) is mounted on the top of the cylinder (11). The two sides of the spring (15) are in contact with the support ring (13) and the table (2) respectively. The top of the fixed ring (14) is in contact with the clip (10).

2. The clamping device for the automobile bracket according to claim 1, characterized in that: A horizontal plate (16) is provided below the support plate (1), and an adjustment mechanism is provided between the horizontal plate (16) and the support plate (1); The adjustment mechanism includes two vertical plates (17) on a horizontal plate (16), support blocks (18) on the two vertical plates (17) respectively, a hinge seat (19) above the support block (18), a baffle (20) hinged on the hinge seat (19), and two hinge shafts (21) on a support plate (1). The two hinge shafts (21) are respectively installed on both sides of the support plate (1). The support plate (1) is located between the two vertical plates (17). The two sides of the support plate (1) are in contact with the two vertical plates (17) respectively. The middle part of the vertical plate (17) is open. A through hole is provided, which is fitted on the hinge shaft (21). The diameter of the hinge shaft (21) matches the diameter of the through hole. The support block (18) is located below the support plate (1). The bottom surface of the support plate (1) is in contact with the support block (18). The support block (18) is installed on the vertical plate (17). The hinge seat (19) is installed on the top of the vertical plate (17). One end of the baffle (20) is hinged to the hinge seat (19). The other end of the baffle (20) is located above the support plate (1). The bottom surface of the baffle (20) is in contact with the top surface of the vertical plate (17).

3. The clamping device for the automobile bracket according to claim 2, characterized in that: Two fixing blocks (22) are provided on one side of the hinge shaft (21). The two fixing blocks (22) are respectively installed on the outer side of the two vertical plates (17). A first threaded hole is provided on the fixing block (22). A first bolt (23) is threaded in the first threaded hole. One side of the first bolt (23) is in contact with the support block (18). A second threaded hole is provided on the top surface of the vertical plate (17). A second bolt (24) is threaded in the second threaded hole. An eccentric plate (25) is provided on the second bolt (24). A through hole is provided on the eccentric plate (25). The through hole is fitted on the second bolt (24). The diameter of the second bolt (24) matches the diameter of the through hole.

4. The clamping device for the automobile bracket according to claim 2, characterized in that: The horizontal plate (16) is provided with two first handles (26), which are respectively installed on both sides of the horizontal plate (16). The two vertical plates (17) are located between the two first handles (26). The table (2) is provided with two second handles (27), which are respectively installed on both sides of the horizontal plate (16). The base (3) is located between the two first handles (26).

5. The clamping device for the automobile bracket according to claim 1, characterized in that: The bottom of the cylinder (11) extends out from the support tube (9). A ring (28) is fitted at the bottom end of the cylinder (11). The ring (28) is installed on the cylinder (11). A third threaded hole is provided on the support tube (9) below the support ring (13). A third bolt (29) is threaded in the third threaded hole. One side of the third bolt (29) is in contact with the cylinder (11).

6. The clamping device for the automobile bracket according to claim 1, characterized in that: The support plate (1) is provided with a sleeve hole (30), and the support tube (9) is connected to the support groove (4) through the sleeve hole (30). The sleeve hole (30) is fitted on the fixed shaft (12), and the diameter of the sleeve hole (30) matches the diameter of the fixed shaft (12). The bottom end of the fixed shaft (12) is provided with a guide groove (31), and the groove diameter of the guide groove (31) gradually decreases along the direction close to the table (2). The inner cavity shape of the support groove (4) matches the outer shape of the table (2), and the bottom end of the table (2) is provided with a guide groove, which gradually decreases along the direction away from the fixed shaft (12).

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