Municipal bridge expansion joint quick replacement clamping device

Abstract

This application relates to the field of bridge engineering and discloses a quick-replacement clamping device for municipal bridge expansion joints. It includes a replacement bracket for the municipal bridge expansion joint, with a lifting sleeve fixedly inserted through the top of the bracket. A lifting mechanism is provided on the inner side of the lifting sleeve. Support bases are fixedly installed on both sides of the replacement bracket, and each support base has three positioning grooves at its bottom. Positioning mechanisms are provided on the inner side of each of the six positioning grooves. This application has the following advantages and effects: after the expansion joint is clamped by the bottom grippers, the two grippers, along with the expansion joint, are moved upwards by a lifting cylinder, greatly improving work efficiency and reducing the burden on workers. Furthermore, it allows for a tight connection between the base of the replacement device and the ground. Simultaneously, the height of the positioning mechanism can be adjusted using the cooperation of the threaded sleeve and threaded rod, making it better adaptable to different ground elevations and increasing the stability of the replacement device when subsequently lifting the expansion joint.

Description

Technical Field

[0001] This application relates to the field of bridge engineering technology, and in particular to a quick-change clamping device for expansion joints of municipal bridges. Background Technology

[0002] Bridge engineering is an important branch of transportation engineering, mainly studying the planning, design, construction, maintenance and management of bridges. Based on mechanics and materials science, it achieves the function of crossing obstacles such as rivers, valleys and roads through the rational design of bridge span structures, pier foundations and other structures. It must take into account safety, durability, applicability and economy, and covers a variety of types such as railway bridges, highway bridges and urban bridges. It is a key engineering technology to ensure smooth transportation networks and promote regional economic development.

[0003] In existing technologies, when quickly replacing expansion joints on bridges, it is often necessary to lift them up with replacement equipment before replacement. However, on some bridges, the ground heights on both sides of the expansion joint are different, and existing equipment cannot adapt well to different ground heights. This can easily cause the equipment to shake when lifting the expansion joint, posing a significant safety hazard.

[0004] Therefore, we propose a quick-change clamping device for expansion joints of municipal bridges to solve the above problems. Utility Model Content

[0005] In order to solve the problem of the inconvenience of replacing expansion joints, this application provides a quick replacement clamping device for expansion joints of municipal bridges.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a quick replacement clamping device for municipal bridge expansion joints, including a replacement bracket for municipal bridge expansion joints, wherein a lifting sleeve is fixedly inserted through the top of the replacement bracket, and a lifting mechanism is provided on the inner side of the lifting sleeve; support bases are fixedly installed on both sides of the replacement bracket, and three positioning grooves are opened at the bottom of each of the two support bases, and a positioning mechanism is provided on the inner side of each of the six positioning grooves.

[0007] A further feature of this invention is that the lifting mechanism includes a lifting cylinder and a lifting rod, the lifting rod is slidably installed on the inner side of the lifting sleeve, a lifting port is opened at the top of the lifting sleeve, a lifting cylinder is fixedly installed on the inner side of the lifting port, and the piston of the lifting cylinder is fixedly connected to the top end of the lifting rod.

[0008] By adopting the above technical solution, the lifting rod can be raised and lowered by using a lifting cylinder.

[0009] A further feature of this invention is that a clamping platform is fixedly installed at the bottom end of the lifting rod, and two sliding openings are provided on the top of the clamping platform, with grippers slidably installed on the inner sides of both sliding openings.

[0010] By adopting the above technical solution, it is easy to move the clamping platform by using the lifting rod.

[0011] A further feature of this invention is that the inner side of the clamping platform has two push grooves, and a clamping cylinder is fixedly installed on the inner side of each of the two push grooves. The pistons of the two clamping cylinders are fixedly connected to one side of the corresponding gripper.

[0012] By adopting the above technical solution, the gripper can be moved by the clamping cylinder.

[0013] A further feature of this invention is that: threaded sleeves are fixedly installed on the inner side of each of the six positioning slots; servo motors are fixedly installed on the top inner walls of each of the six positioning slots; square columns are fixedly installed on the output shafts of each of the six servo motors; and each of the six square columns rotatably passes through the corresponding threaded sleeve.

[0014] By adopting the above technical solution, it is easy to drive the threaded rod to rotate through the square column.

[0015] A further feature of this invention is that the positioning mechanism includes a threaded rod, a ball-end rod, and a fixed base. The threaded rod is threaded onto the inner side of the threaded sleeve. A square groove is formed at the top of the threaded rod. A square column is slidably installed inside the square groove. A ball-end groove is formed at the bottom of the threaded rod. The ball end of the ball-end rod is slidably installed inside the ball-end groove. A fixed base is fixedly installed at the bottom of the ball-end rod.

[0016] By adopting the above technical solution, it is convenient to move the threaded rod axially through the threaded sleeve.

[0017] A further feature of this invention is that a vacuum suction cup is fixedly installed on the inner side of the fixed base.

[0018] By adopting the above technical solution, the connection between the fixed base and the ground can be made tighter.

[0019] A further feature of this invention is that a vacuum port is provided at the top of the fixed base, a vacuum groove is provided at the bottom of the ball head rod, and a vacuum pump is fixedly installed on the top inner wall of the vacuum groove.

[0020] By adopting the above technical solution, the air between the vacuum suction cup and the ground can be removed, thereby increasing the suction force of the vacuum suction cup.

[0021] This application includes at least one of the following beneficial technical effects:

[0022] This application utilizes a lifting mechanism consisting of a replacement bracket and a lifting rod. After the expansion joint is clamped by the gripper at the bottom, the two grippers along with the expansion joint are moved upward by the lifting cylinder, which greatly improves work efficiency and reduces the burden on the staff.

[0023] This application utilizes a positioning mechanism consisting of a vacuum pump and a suction cup to ensure a tight connection between the base of the replacement equipment and the ground. Furthermore, the use of a threaded sleeve and a threaded rod allows for height adjustment of the positioning mechanism, enabling it to better adapt to varying ground elevations. This increases the stability of the replacement equipment when subsequently lifting the expansion joint, thereby enhancing the equipment's safety. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of a quick-change clamping device for expansion joints of municipal bridges proposed in this embodiment;

[0025] Figure 2 This is a three-dimensional structural breakdown diagram of a quick-change clamping device for municipal bridge expansion joints proposed in this embodiment;

[0026] Figure 3 This is a three-dimensional structural disassembly diagram of the lifting mechanism of a quick-change clamping device for municipal bridge expansion joints proposed in this embodiment;

[0027] Figure 4 This is a three-dimensional cross-sectional view of the positioning mechanism of a quick-change clamping device for municipal bridge expansion joints proposed in this embodiment.

[0028] Figure 5 This is a three-dimensional structural breakdown diagram of the positioning mechanism of a quick-change clamping device for municipal bridge expansion joints proposed in this embodiment.

[0029] In the diagram: 1. Replacement bracket; 2. Lifting sleeve; 3. Lifting cylinder; 4. Lifting rod; 5. Clamping platform; 6. Clamping cylinder; 7. Gripper; 8. Support base; 9. Servo motor; 10. Threaded sleeve; 11. Threaded rod; 12. Ball end rod; 13. Vacuum pump; 14. Fixed base; 15. Vacuum suction cup; 16. Square column; 17. Ball end groove. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0031] This application discloses a quick replacement clamping device for municipal bridge expansion joints, including a replacement bracket 1 for municipal bridge expansion joints. A lifting sleeve 2 is fixedly inserted through the top of the replacement bracket 1, and a lifting mechanism is provided on the inner side of the lifting sleeve 2. Support bases 8 are fixedly installed on both sides of the replacement bracket 1. Three positioning grooves are opened at the bottom of the two support bases 8, and a positioning mechanism is provided on the inner side of each of the six positioning grooves.

[0032] Specifically, the lifting mechanism includes a lifting cylinder 3 and a lifting rod 4. The lifting rod 4 is slidably installed on the inner side of the lifting sleeve 2. A lifting port is opened at the top of the lifting sleeve 2. The lifting cylinder 3 is fixedly installed on the inner side of the lifting port. The piston of the lifting cylinder 3 is fixedly connected to the top of the lifting rod 4. The lifting rod 4 can be lifted and lowered by the lifting cylinder 3.

[0033] Specifically, a clamping platform 5 is fixedly installed at the bottom of the lifting rod 4. Two sliding openings are opened on the top of the clamping platform 5, and grippers 7 are slidably installed on the inner side of the two sliding openings, so as to facilitate the movement of the clamping platform 5 by the lifting rod 4.

[0034] Specifically, the clamping platform 5 has two push grooves on its inner side, and clamping cylinders 6 are fixedly installed on the inner side of each of the two push grooves. The pistons of the two clamping cylinders 6 are fixedly connected to one side of the corresponding gripper 7, and the gripper 7 can be moved by the clamping cylinders 6.

[0035] Specifically, threaded sleeves 10 are fixedly installed on the inner side of each of the six positioning slots, servo motors 9 are fixedly installed on the top inner wall of each of the six positioning slots, and square posts 16 are fixedly installed on the output shafts of each of the six servo motors 9. Each of the six square posts 16 rotates through the corresponding threaded sleeves 10, so as to drive the threaded rods 11 to rotate through the square posts 16.

[0036] Specifically, the positioning mechanism includes a threaded rod 11, a ball-end rod 12, and a fixed base 14. The threaded rod 11 is threadedly installed on the inner side of the threaded sleeve 10. A square groove is opened at the top of the threaded rod 11, and a square post 16 is slidably installed on the inner side of the square groove. A ball-end groove 17 is opened at the bottom end of the threaded rod 11, and the ball end of the ball-end rod 12 is slidably installed on the inner side of the ball-end groove 17. The fixed base 14 is fixedly installed at the bottom end of the ball-end rod 12, so that the threaded rod 11 can be moved axially through the threaded sleeve 10.

[0037] Specifically, a vacuum suction cup 15 is fixedly installed on the inner side of the fixed base 14, which can make the connection between the fixed base 14 and the ground more secure.

[0038] Specifically, the top of the fixed base 14 is provided with a vacuum port, the bottom of the ball head rod 12 is provided with a vacuum groove, and a vacuum pump 13 is fixedly installed on the top inner wall of the vacuum groove, which can extract the air between the vacuum suction cup 15 and the ground to increase the suction force of the vacuum suction cup 15.

[0039] Working principle: When replacing expansion joints, after the staff moves the equipment to the designated position, they first adjust the height of multiple fixed bases 14 according to the ground level. Then, the servo motor 9 is started, driving the square column 16 to rotate, which in turn drives the threaded rod 11 with square grooves to rotate. When the servo motor 9 drives the square column 16 to rotate, the square column 16 slides within the square grooves, simultaneously transmitting torque to rotate the threaded rod 11. Based on the threaded connection between the threaded sleeve 10 and the threaded rod 11, the threaded rod 11 moves axially. This movement of the threaded rod 11 causes the ball joint 12 and the fixed base 14 to rise or fall, bringing them closer to the ground. The ball joint 12 then controls the fixed base 14... The angle is adjusted to better fit the ground. Then, multiple vacuum pumps 13 are activated to remove air, causing the corresponding vacuum suction cups 15 to adhere tightly to the ground, preventing the equipment from shaking when lifting the expansion joint. Then, the operator activates the lifting cylinder 3, which moves the lifting rod 4 down, causing the clamping platform 5 and the two grippers 7 to move to the designated position. Then, the two clamping cylinders 6 are activated, which move the corresponding grippers 7 closer together to clamp the expansion joint. After clamping, the lifting cylinder 3 is reset, thereby lifting the expansion joint. When the expansion joint is long, multiple devices can work together to increase the stability during operation.

[0040] With the above structure, the municipal bridge expansion joint quick replacement clamping device provided in this application can clamp the expansion joint at the bottom with the gripper 7, and then drive the two grippers 7 and the expansion joint to move upward through the lifting cylinder 3, which greatly improves work efficiency, reduces the burden on the staff, and can make the base of the replacement equipment tightly connected to the ground. At the same time, the height of the positioning mechanism can be adjusted by the cooperation of the threaded sleeve 10 and the threaded rod 11, so that it can better adapt to different ground heights, increase the stability of the replacement equipment when lifting the expansion joint, and improve the safety of the equipment.

[0041] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A quick-change clamping device for expansion joints of municipal bridges, characterized in that, Includes a replacement bracket (1) for the expansion and contraction of municipal bridges, wherein a lifting sleeve (2) is fixedly inserted through the top of the replacement bracket (1), and a lifting mechanism is provided on the inner side of the lifting sleeve (2). The replacement bracket (1) is fixedly installed with support bases (8) on both sides. The bottom of each of the two support bases (8) is provided with three positioning slots, and the inner side of each of the six positioning slots is provided with a positioning mechanism.

2. The quick-change clamping device for expansion joints of municipal bridges according to claim 1, characterized in that: The lifting mechanism includes a lifting cylinder (3) and a lifting rod (4). The lifting rod (4) is slidably installed on the inner side of the lifting sleeve (2). The top of the lifting sleeve (2) is provided with a lifting port. The lifting cylinder (3) is fixedly installed on the inner side of the lifting port. The piston of the lifting cylinder (3) is fixedly connected to the top end of the lifting rod (4).

3. The quick-change clamping device for expansion joints of municipal bridges according to claim 2, characterized in that: The bottom end of the lifting rod (4) is fixedly installed with a clamping platform (5), and the top of the clamping platform (5) has two sliding openings, and the inner side of the two sliding openings is slidably installed with a gripper (7).

4. The quick-change clamping device for municipal bridge expansion joints according to claim 3, characterized in that: The clamping platform (5) has two push grooves on its inner side, and clamping cylinders (6) are fixedly installed on the inner side of each of the two push grooves. The pistons of the two clamping cylinders (6) are fixedly connected to one side of the corresponding gripper (7).

5. The quick-change clamping device for expansion joints of municipal bridges according to claim 1, characterized in that: A threaded sleeve (10) is fixedly installed on the inner side of each of the six positioning slots. A servo motor (9) is fixedly installed on the top inner wall of each of the six positioning slots. A square column (16) is fixedly installed on the output shaft of each of the six servo motors (9). Each of the six square columns (16) rotates through the corresponding threaded sleeve (10).

6. The quick-change clamping device for expansion joints of municipal bridges according to claim 5, characterized in that: The positioning mechanism includes a threaded rod (11), a ball head rod (12), and a fixed base (14). The threaded rod (11) is threaded on the inner side of the threaded sleeve (10). A square groove is opened at the top of the threaded rod (11). A square column (16) is slidably installed on the inner side of the square groove. A ball head groove (17) is opened at the bottom end of the threaded rod (11). The ball head end of the ball head rod (12) is slidably installed on the inner side of the ball head groove (17). The fixed base (14) is fixedly installed at the bottom end of the ball head rod (12).

7. A quick-change clamping device for expansion joints of municipal bridges according to claim 6, characterized in that: A vacuum suction cup (15) is fixedly installed on the inner side of the fixed base (14).

8. A quick-change clamping device for expansion joints of municipal bridges according to claim 7, characterized in that: The top of the fixed base (14) is provided with a vacuum port, and the bottom of the ball head rod (12) is provided with a vacuum groove. A vacuum pump (13) is fixedly installed on the top inner wall of the vacuum groove.

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