Bridge bearing replacement device and replacement method

Abstract

The application relates to a bridge support replacement device and a replacement method, and belongs to the technical field of bridge structures. The device comprises a hoop surrounding a pier, a sliding rail rotatably arranged on the hoop, a sliding seat slidably arranged on the sliding rail, a driving rod hingedly arranged on the sliding seat, a mounting seat arranged on the top surface of the pier, and a first driving element for driving the sliding seat to slide. The sliding rail is arranged in a direction parallel or perpendicular to the running direction of the bridge. The sliding rail is fixedly arranged at the bottom of the bridge. The end of the driving rod, which is away from the sliding seat, is hingedly arranged on the mounting seat. The driving rod is inclined towards the direction away from the pier body. The sliding seat slides along the length direction of the sliding rail. The application has the effect of shortening the replacement period of the bridge support.

Description

Technical Field

[0001] This application relates to the field of bridge structure technology, and in particular to a bridge bearing replacement device and replacement method. Background Technology

[0002] Bridge bearings are crucial structural components connecting the superstructure and substructure of a bridge. Located between the bridge deck and the bearing pad, they reliably transfer the loads and deformations borne by the superstructure to the substructure, serving as a vital force transmission device. Bridge bearings are classified into two types: fixed bearings and movable bearings. Commonly used bearing types in bridge engineering include: asphalt or flat plate bearings, rubber plate bearings, spherical bearings, steel bearings, and special bearings.

[0003] Bridge bearings are prone to damage after a period of use, requiring regular inspection and replacement of damaged bearings. When replacing bearings, hydraulic jacks are typically used to support the bridge first. Construction workers then remove the damaged bearing, place the new bearing in its designated position, and finally secure it in place.

[0004] However, the small distance between the bridge and the top of the piers makes it difficult to install the jacks vertically on the piers. It is necessary to set up scaffolds and other auxiliary tools on the ground, install the jacks on the scaffolds, and then carry out the bridge lifting operation, which results in a long replacement cycle for the bridge bearings. Summary of the Invention

[0005] To shorten the replacement cycle of bridge bearings, this application provides a bridge bearing replacement device and replacement method.

[0006] Firstly, the bridge bearing replacement device provided in this application adopts the following technical solution:

[0007] A bridge bearing replacement device includes a clamp surrounding a bridge pier, a slide rail rotatably mounted on the clamp, a sliding seat slidably mounted on the slide rail, a drive rod hinged to the sliding seat, a mounting base mounted on the top surface of the bridge pier, and a first drive component for driving the sliding seat to slide. The slide rail is arranged in a direction parallel or perpendicular to the bridge's orientation and is fixedly mounted at the bottom of the bridge. The end of the drive rod away from the sliding seat is hinged to the mounting base, and the drive rod is inclined in a direction away from the pier. The sliding seat slides along the length of the slide rail.

[0008] Optionally, two slide rails are provided, which are symmetrically arranged along the supporting pad. Multiple grooves are formed on the slide rails. Multiple sliding seats are provided and are located in the grooves respectively. Multiple drive rods are provided and correspond to the number of sliding seats. Two mounting seats are provided, which are arranged along the length direction of the slide rails and are located on both sides of the supporting pad. A support rod is provided between the two mounting seats. The length direction of the support rod is parallel to the length direction of the slide rails, and the end of the support rod abuts against the mounting seat.

[0009] Optionally, both ends of the drive rod are semi-circular, and the surfaces of the sliding seat and mounting seat for mounting the drive rod are provided with arc-shaped grooves adapted to the ends of the drive rod. The two ends of the drive rod respectively abut against the bottom wall of the corresponding arc-shaped groove, and a rotating shaft is fixedly installed in each of the two arc-shaped grooves. The two ends of the drive rod are respectively rotatably mounted on the corresponding rotating shaft.

[0010] Optionally, four mounting rods are hinged to the side wall of the clamp. The mounting rods are inclined in the direction away from the pier body. The ends of the mounting rods are located on the same straight line and the straight line is perpendicular to the length direction of the slide rail. The four mounting rods are evenly distributed on both sides of the clamp. The slide rails located on both sides of the support pad are respectively hinged to the ends of two mounting rods.

[0011] Optionally, the first driving component includes a plurality of first hydraulic cylinders fixedly mounted on the slide rail. The number of first hydraulic cylinders is the same as the number of slide grooves and they correspond one-to-one. The length direction of the piston rod of the first hydraulic cylinder is parallel to the length direction of the slide rail. The sliding seat is fixedly mounted on the end of the piston rod of the first hydraulic cylinder.

[0012] Optionally, the first driving component includes a plurality of first hydraulic cylinders fixedly mounted on the slide rail. The number of first hydraulic cylinders is the same as the number of slide grooves and they correspond one-to-one. The length direction of the piston rod of the first hydraulic cylinder is parallel to the length direction of the slide rail. The sliding seat is fixedly mounted on the end of the piston rod of the first hydraulic cylinder.

[0013] Optionally, a lifting plate is slidably disposed on the mounting base facing the support pad stone. The lifting plate is located on the top surface of the support pad stone. The end face of the lifting plate facing the bridge bearing is oriented away from the bridge bearing and is inclined upward. The mounting base is provided with a second driving member for driving the lifting plate to slide towards the bridge bearing and moving the bridge bearing onto the lifting plate.

[0014] Optionally, the inclined surface of the lifting plate is rotatably provided with multiple receiving rollers. The projection of the receiving rollers on the top surface of the pier is parallel to the length direction of the slide rail. One end of the receiving roller near the bridge support is located below the surface of the lifting plate, and the other end is located above the surface of the lifting plate.

[0015] Optionally, the inclined surface of the lifting plate is rotatably provided with multiple receiving rollers. The projection of the receiving rollers on the top surface of the pier is parallel to the length direction of the slide rail. One end of the receiving roller near the bridge support is located below the surface of the lifting plate, and the other end is located above the surface of the lifting plate.

[0016] Secondly, this application provides a method for replacing bridge bearings, which adopts the following technical solution:

[0017] Optionally, a method for replacing bridge bearings, using a bridge bearing replacement device, further includes:

[0018] S1: Use a lifting platform or similar device to send the clamp into the upper part of the pier and fix the clamp to the pier; then rotate the installation rod, the rotation of the installation rod will cause the slide rail to abut against the bottom of the bridge, and then fix the slide rail to the bottom of the bridge.

[0019] S2: Place the mounting base on top of the pier and fix the support rod between the two mounting bases;

[0020] S3: Start the first hydraulic cylinder. The first hydraulic cylinder drives the sliding seat to slide toward the bridge support. The sliding seat drives the drive rod to rotate. The drive rod rotates toward the pier and lifts the bridge.

[0021] S4: After the bridge is lifted to the appropriate position, the temporary support structure is moved into the fixed groove to provide temporary support for the bridge; then the lifting plate is slid, and the lifting plate moves the bridge bearing onto the lifting plate. Then the bridge bearing is pulled to slide on the receiving roller to move the bridge bearing out; then the bridge bearing to be replaced is moved onto the lifting plate, the bridge bearing is moved to the designed position, and then the bridge is lowered onto the bridge bearing.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. When replacing bridge bearings, firstly, the clamps are fixed to the piers, then the mounting base is installed on the top surface of the pier. Next, the position of the slide rail is adjusted and fixed to the bottom surface of the bridge. Then, the first driving component drives the sliding seat to slide. The sliding seat's movement causes the driving rod to rotate around the mounting base as its axis, moving towards the pier. During this process, the driving rod lifts the bridge away from the pier, allowing for the replacement of the bridge bearing. Because the driving rod is tilted between the bridge and the pier, the space occupied by the driving rod between the pier and the bridge is minimized. Furthermore, there is no need to build supports near the pier, thus shortening the bridge bearing replacement period. This process also reduces damage to the pier structure and improves the safety of the pier and the bridge. Additionally, the tilted placement of the driving rod allows for bridge bearing replacement even when the distance between the bridge and the pier is small. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a bridge bearing replacement device according to an embodiment of this application;

[0025] Figure 2 This is a cross-sectional view of a bridge in a bridge bearing replacement device according to an embodiment of this application;

[0026] Figure 3 This is a cross-sectional view of the slide rail in a bridge bearing replacement device according to an embodiment of this application;

[0027] Figure 4 This is a schematic diagram of the lifting plate in a bridge bearing replacement device according to an embodiment of this application;

[0028] Figure 5 yes Figure 4 An enlarged schematic diagram of part A in the middle.

[0029] Explanation of reference numerals in the attached drawings: 1. Pier; 2. Bridge; 3. Bridge bearing; 4. Slide rail; 5. Sliding seat; 6. Drive rod; 7. Mounting seat; 8. Bolt; 9. Mounting rod; 10. Hinge seat; 11. Disc; 12. Arc groove; 13. Support pad; 14. Slide groove; 15. Support rod; 16. Rotating shaft; 17. First hydraulic cylinder; 18. Fixing groove; 19. Lifting plate; 20. Second hydraulic cylinder; 21. Receiving roller; 22. Limiting plate. 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 bridge bearing replacement device. (Refer to...) Figure 1 and Figure 2 The bridge bearing replacement device includes a clamp 23 enclosing the pier 1, a slide rail 4 rotatably mounted on the clamp 23, a sliding seat 5 slidably mounted on the slide rail 4, a drive rod 6 hinged to the sliding seat 5, a mounting seat 7 mounted on the top surface of the pier 1, and a first drive component for driving the sliding seat 5 to slide. The clamp 23 is a known technology and will not be described in detail here. The slide rail 4 is arranged in a direction parallel or perpendicular to the direction of the bridge 2. In this embodiment, the length direction of the slide rail 4 is perpendicular to the direction of the bridge 2. The slide rail 4 is fixedly mounted at the bottom of the bridge 2 by bolts 8. The sliding seat 5 slides along the length direction of the slide rail 4. The end of the drive rod 6 away from the sliding seat 5 is hinged to the mounting seat 7. The hinge axes at both ends of the drive rod 6 are parallel to the direction of the bridge 2. The drive rod 6 is inclined in the direction away from the pier body. Furthermore, in this embodiment, the drive rod 6 is a rigid rod with high stiffness, small deformation, and is not easily bent.

[0032] Reference Figure 2 and Figure 3Furthermore, two slide rails 4 are provided, and the two slide rails 4 are symmetrically arranged along the support pad stone 13. Four mounting rods 9 are hinged to the side wall of the clamp 23. In this application, a hinge seat 10 is fixedly provided on the side wall of the clamp 23. The mounting rods 9 are rotatably mounted on the hinge seat 10. Both ends of the mounting rods 9 are provided with discs 11. The hinge seat 10 is provided with an arc groove 12 that matches the discs 11. The discs 11 are received in the arc groove 12. The mounting rods 9 are inclined in the direction away from the pier body. The ends of the mounting rods 9 located on the clamp 23 are on the same straight line and the straight line is perpendicular to the length direction of the slide rail 4. The four mounting rods 9 are evenly distributed on both sides of the clamp 23. The slide rails 4 located on both sides of the support pad stone 13 are respectively hinged to the ends of the two mounting rods 9. Furthermore, the slide rails 4 are hinged to the mounting rods 9 on the same side.

[0033] When replacing bridge bearing 3, firstly, the clamp 23 is transported to the upper part of the pier via a ladder or similar means, and then the clamp 23 is locked onto the pier. Next, the mounting seat 7 is placed on the pier and abuts against the side wall of the bridge 2 pad stone. Then, the slide rail 4 is fixed to the bottom of the bridge 2. Subsequently, the first driving component drives the sliding seat 5 to slide. When the sliding seat 5 slides towards the pier, the driving rod 6 rotates towards the pier. During the rotation of the driving rod 6, the length of the vertical component of the driving rod 6 gradually increases, thereby pushing the bridge 2 to move away from the pier, thus separating the bridge 2 from the bridge bearing 3. Then, the damaged bridge bearing 3 is replaced. In the above construction process, the construction can be carried out when the distance between the top of the pier and the bridge 2 is small, thus eliminating the need for scaffolding and other procedures, thereby improving construction efficiency and shortening the construction period.

[0034] Reference Figure 2 and Figure 3 To ensure sufficient lifting force is applied to bridge 2, multiple sliding grooves 14 are provided on the slide rail 4. The length directions of the multiple sliding grooves 14 are all parallel to each other. Multiple sliding seats 5 are provided and are located in the sliding grooves 14 respectively. The opening of the sliding groove 14 faces the ground. The sliding seats 5 slide along the length direction of the sliding groove 14. Multiple drive rods 6 are provided and correspond to the number of sliding seats 5.

[0035] Reference Figure 2 and Figure 3 There are two mounting seats 7. The two mounting seats 7 are arranged along the length of the slide rail 4 and are located on both sides of the support pad 13. A support rod 15 is provided between the two mounting seats 7. The support rod 15 is a rigid rod. The length of the support rod 15 is parallel to the length of the slide rail 4, and the end of the support rod 15 abuts against the mounting seat 7.

[0036] When a lifting force is applied to the bridge 2, the first driving component drives multiple sliding seats 5 to slide simultaneously and at the same speed in the slide groove 14 to overcome the weight of the bridge 2, thereby facilitating the separation of the bridge 2 from the bridge support 3. At the same time, the multiple sliding seats 5 are located on the slide rail 4, increasing the force points at the bottom of the bridge 2, which on the one hand reduces the possibility of local damage to the bridge 2; on the other hand, it distributes the weight of the bridge 2 evenly on the multiple sliding seats 5, thereby facilitating the lifting of the bridge 2.

[0037] Reference Figure 2 and Figure 3 To facilitate the rotation of the drive rod 6 along a predetermined path and to lift the bridge 2, both ends of the drive rod 6 are semi-circular. The surfaces of the sliding seat 5 and the mounting seat 7 for mounting the drive rod 6 are provided with arc-shaped grooves 12 that fit the ends of the drive rod 6. The two ends of the drive rod 6 abut against the bottom wall of the corresponding arc-shaped grooves 12. A rotating shaft 16 is fixedly installed in each of the two arc-shaped grooves 12, and the two ends of the drive rod 6 are rotatably mounted on the corresponding rotating shafts 16. When the drive rod 6 is installed on the sliding seat 5 and the mounting seat 7, both ends of the drive rod 6 abut against the arc-shaped grooves 12, thereby reducing the load on the rotating shafts 16 and ensuring that the drive rod 6 rotates along the predetermined path. Furthermore, the two ends of the drive rod 6 are supported by the sliding seat 5 and the mounting seat 7, which facilitates the transfer of the load of the bridge 2 to the pier through the drive rod 6.

[0038] Reference Figure 2 and Figure 3 In this embodiment, the first driving component includes a plurality of first hydraulic cylinders 17 fixedly mounted on the slide rail 4. The number of first hydraulic cylinders 17 is the same as the number of slide grooves 14 and they correspond one-to-one. The length direction of the piston rod of the first hydraulic cylinder 17 is parallel to the length direction of the slide rail 4. The sliding seat 5 is fixedly mounted on the end of the piston rod of the first hydraulic cylinder 17. When the first hydraulic cylinder 17 is activated, the first hydraulic cylinder 17 pushes the sliding seat 5 to slide in the slide groove 14. The sliding seat 5 drives the driving rod 6 to rotate, thereby lifting the bridge 2. The operation is simple and convenient. At the same time, the first hydraulic cylinder 17 has the advantages of large load and stable operation, which further facilitates the lifting of the bridge 2.

[0039] Reference Figure 2 and Figure 3After the bridge 2 is lifted to a suitable distance, in order to reduce the load on the drive rod 6 and the first hydraulic cylinder 17, a fixing groove 18 is provided on the top surface of the mounting base 7. The opening of the fixing groove 18 faces the bottom surface of the bridge 2. The fixing groove 18 is used to install a temporary support structure. After the bridge 2 is lifted, it rests on the temporary support structure. In this embodiment, the temporary support structure can be a support column, which is cylindrical. After the bridge 2 is lifted, a support column of suitable length is cut and moved into the fixing groove 18 according to the distance between the bottom surface of the bridge 2 and the bottom of the fixing groove 18. The support column provides temporary support for the bridge 2, thereby reducing the load on the drive rod 6 and the first hydraulic cylinder 17. In other embodiments, the support column can be replaced by an I-beam or angle steel, etc., moved into the fixing groove 18.

[0040] Reference Figure 4 and Figure 5 Because the bridge bearing 3 is heavy, the labor intensity of construction workers is high when removing the bridge bearing 3, and the wear between the bridge bearing 3 and the supporting pad 13 is large, which can easily lead to the tilting and damage of the surface of the supporting pad 13. In order to facilitate the removal of the bridge bearing 3 from the supporting pad 13, a lifting plate 19 is slidably provided on the mounting base 7 facing the surface of the supporting pad 13. The lifting plate 19 is located on the top surface of the supporting pad 13 and is supported on the top surface of the supporting pad 13. The end face of the lifting plate 19 facing the bridge bearing 3 is oriented away from the bridge bearing 3 and is inclined upward. The mounting base 7 is provided with a second driving member for driving the lifting plate 19 to slide towards the bridge bearing 3 and move the bridge bearing 3 onto the lifting plate 19. In this embodiment, the second driving member includes a second hydraulic cylinder 20 fixedly installed on the mounting base 7. The length direction of the piston rod of the second hydraulic cylinder 20 is parallel to the length direction of the slide rail 4. The lifting plate 19 is fixedly installed on the piston rod of the second hydraulic cylinder 20.

[0041] After bridge 2 is lifted to a certain height, the second hydraulic cylinder 20 is activated. The second hydraulic cylinder 20 drives the lifting plate 19 to slide towards the bridge support 3. The end of the lifting plate 19 away from the second hydraulic cylinder 20 enters between the support pad 13 and the bridge support 3, thereby separating the bridge support 3 from the support pad 13. After the bridge support 3 is separated from the support pad 13, the movement of the bridge support 3 only overcomes the friction between the bridge support 3 and the lifting plate 19, thus facilitating the removal of the bridge support 3. After the bridge support 3 is separated from the support pad 13, the movement of the bridge support 3 does not cause wear on the support pad 13, thereby ensuring the quality of the support pad 13 and the subsequent quality of bridge 2.

[0042] Reference Figure 4 and Figure 5To facilitate the movement of the bridge bearing 3 on the lifting plate 19, multiple receiving rollers 21 are rotatably arranged on the inclined surface of the lifting plate 19. The projection of the receiving rollers 21 on the top surface of the pier is parallel to the length direction of the slide rail 4. One end of the receiving roller 21 near the bridge bearing 3 is located below the surface of the lifting plate 19, and the other end is located above the surface of the lifting plate 19. Under the action of the receiving rollers 21, the bridge bearing 3 moves and drives the receiving rollers 21 to rotate, thereby facilitating the movement of the bridge bearing 3 on the lifting plate 19. At the same time, the receiving rollers 21 are arranged at an incline and one end is located below the surface of the lifting plate 19, which facilitates the relative sliding of the bridge bearing 3 onto the receiving rollers 21. Furthermore, the receiving rollers 21 are made of round steel or the like to reduce the friction between the receiving rollers 21 and the bridge bearing 3, so that the bridge bearing 3 can slide onto the receiving rollers 21.

[0043] Reference Figure 4 and Figure 5 When the bridge support 3 slides onto the receiving roller 21, the bridge support 3 and the receiving roller 21 are in point contact, which can easily cause the bridge support 3 to slide on the receiving roller 21 in an inclined state, making it difficult for the bridge support 3 to be moved out. In order to facilitate the removal of the bridge support 3, a limiting plate 22 is provided on the inclined surface of the lifting plate 19. The limiting plate 22 is in a vertical state. After the bridge support 3 slides into the inclined plate surface of the lifting plate 19, the bridge support 3 abuts against the limiting plate 22.

[0044] The implementation principle of a bridge bearing replacement device according to an embodiment of this application is as follows:

[0045] When replacing the bridge bearing 3, firstly, the clamp 23 is transported to the upper part of the pier via a ladder or similar means, and then the clamp 23 is locked onto the pier. Then, the mounting seat 7 is placed on the pier and abuts against the side wall of the bridge 2 pad stone. Then, the slide rail 4 is fixed to the bottom of the bridge 2. Then, the first hydraulic cylinder 17 drives the sliding seat 5 to slide. When the sliding seat 5 slides toward the pier, the drive rod 6 rotates toward the pier. During the rotation of the drive rod 6, the length of the vertical component of the drive rod 6 gradually increases, thereby pushing the bridge 2 to move away from the pier, thus separating the bridge 2 from the bridge bearing 3.

[0046] Then, the second hydraulic cylinder 20 is activated, which drives the lifting plate 19 to slide toward the bridge bearing 3. The end of the lifting plate 19 away from the second hydraulic cylinder 20 enters between the support pad 13 and the bridge bearing 3, thereby separating the bridge bearing 3 from the support pad 13. Then, the bridge bearing 3 is pushed or pulled to move it out. Damaged bridge bearing 3 is then replaced. In the above construction process, the construction can be carried out when the distance between the top of the pier and the bridge 2 is small, thus eliminating the need for scaffolding and other procedures, thereby improving construction efficiency and shortening the construction period.

[0047] This application discloses a method for replacing bridge bearings, referring to... Figure 1 The bridge bearing replacement method uses a bridge bearing replacement device and also includes;

[0048] S1: Use a lifting platform or similar device to send the clamp 23 to the upper part of the pier 1 and fix the clamp 23 to the pier 1; then rotate the mounting rod 9, the rotation of the mounting rod 9 will cause the slide rail 4 to abut against the bottom of the bridge 2, and then fix the slide rail 4 to the bottom of the bridge 2.

[0049] S2: Place the mounting base 7 on top of the pier 1 and fix the support rod 15 between the two mounting bases 7;

[0050] S3: Start the first hydraulic cylinder 17. The first hydraulic cylinder 17 drives the sliding seat 5 to slide toward the bridge support 3. The sliding seat 5 drives the drive rod 6 to rotate. The drive rod 6 rotates toward the pier and lifts the bridge 2.

[0051] S4: After the bridge 2 is lifted to the appropriate position, the temporary support structure is moved into the fixed groove 18 to provide temporary support for the bridge 2; then the lifting plate 19 is slid, and the lifting plate 19 moves the bridge support 3 onto the lifting plate 19. Then the bridge support 3 is pulled to slide on the receiving roller 21 to move the bridge support 3 out; then the bridge support 3 to be replaced is moved onto the lifting plate 19, the bridge support 3 is moved into the designed position, and then the bridge 2 is lowered onto the bridge support 3.

[0052] 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 bridge bearing replacement device, characterized in that: The system includes a clamp (23) enclosing the pier (1), a slide rail (4) rotatably mounted on the clamp (23), a sliding seat (5) slidably mounted on the slide rail (4), a drive rod (6) hinged to the sliding seat (5), a mounting seat (7) mounted on the top surface of the pier (1), and a first drive member for driving the sliding seat (5) to slide. The slide rail (4) is arranged in a direction parallel or perpendicular to the direction of the bridge (2), and the slide rail (4) is fixedly mounted at the bottom of the bridge (2). The end of the drive rod (6) away from the sliding seat (5) is hinged to the mounting seat (7), and the drive rod (6) is inclined in a direction away from the pier body. The sliding seat (5) slides along the length direction of the slide rail (4).

2. The bridge bearing replacement device according to claim 1, characterized in that: Two slide rails (4) are provided, and the two slide rails (4) are symmetrically arranged along the support pad (13). Multiple slide grooves (14) are opened on the slide rails (4). Multiple sliding seats (5) are provided and are respectively located in the slide grooves (14). Multiple drive rods (6) are provided and correspond to the number of sliding seats (5). Two mounting seats (7) are provided. The two mounting seats (7) are arranged along the length direction of the slide rails (4) and are respectively located on both sides of the support pad (13). A support rod (15) is provided between the two mounting seats (7). The length direction of the support rod (15) is parallel to the length direction of the slide rails (4). The end of the support rod (15) abuts against the mounting seat (7).

3. The bridge bearing replacement device according to claim 1, characterized in that: Both ends of the drive rod (6) are semi-circular. The sliding seat (5) and the mounting seat (7) are provided with arc-shaped grooves (12) that are adapted to the ends of the drive rod (6). Both ends of the drive rod (6) abut against the bottom wall of the corresponding arc-shaped groove (12). A rotating shaft (16) is fixedly provided in each of the two arc-shaped grooves (12). Both ends of the drive rod (6) are rotatably mounted on the corresponding rotating shaft (16).

4. A bridge bearing replacement device according to claim 2, characterized in that: Four mounting rods (9) are hinged to the side wall of the clamp (23). The mounting rods (9) are inclined in the direction away from the pier body. The ends of the mounting rods (9) are located on the same straight line and the straight line is perpendicular to the length direction of the slide rail (4). The four mounting rods (9) are evenly distributed on both sides of the clamp (23). The slide rails (4) located on both sides of the support pad (13) are respectively hinged to the ends of two mounting rods (9).

5. A bridge bearing replacement device according to claim 2, characterized in that: The first driving component includes a plurality of first hydraulic cylinders (17) fixedly mounted on the slide rail (4). The number of first hydraulic cylinders (17) is the same as the number of slide grooves (14) and they correspond one-to-one. The length direction of the piston rod of the first hydraulic cylinder (17) is parallel to the length direction of the slide rail (4). The sliding seat (5) is fixedly mounted at the end of the piston rod of the first hydraulic cylinder (17).

6. A bridge bearing replacement device according to claim 1, characterized in that: The mounting base (7) has a fixing groove (18) on its top surface. The opening of the fixing groove (18) faces the bottom surface of the bridge (2). The fixing groove (18) is used to install a temporary support structure. After the bridge (2) is lifted, it falls on the temporary support structure.

7. A bridge bearing replacement device according to claim 1, characterized in that: The mounting base (7) has a lifting plate (19) slidably disposed on the surface facing the support pad (13). The lifting plate (19) is located on the top surface of the support pad (13). The end face of the lifting plate (19) facing the bridge bearing (3) is oriented away from the bridge bearing (3) and is inclined upward. The mounting base (7) is provided with a second driving member for driving the lifting plate (19) to slide towards the bridge bearing (3) and moving the bridge bearing (3) onto the lifting plate (19).

8. A bridge bearing replacement device according to claim 7, characterized in that: The inclined surface of the lifting plate (19) is rotatably provided with multiple receiving rollers (21). The projection of the receiving rollers (21) on the top surface of the pier is parallel to the length direction of the slide rail (4). One end of the receiving roller (21) near the bridge support (3) is located below the surface of the lifting plate (19), and the other end is located above the surface of the lifting plate (19).

9. A bridge bearing replacement device according to claim 7, characterized in that: The inclined surface of the lifting plate (19) is provided with a limiting plate (22). The limiting plate (22) is in a vertical state. After the bridge support (3) slides into the inclined surface of the lifting plate (19), the bridge support (3) abuts against the limiting plate (22).

10. A method for replacing bridge bearings, characterized in that: The bridge bearing replacement device as described in any one of claims 1-9 further includes: S1: Use a lifting platform or similar device to send the clamp (23) into the upper part of the pier (1) and fix the clamp (23) on the pier (1); then rotate the mounting rod (9), the mounting rod (9) rotates and drives the slide rail (4) to abut against the bottom of the bridge (2), and then fix the slide rail (4) at the bottom of the bridge (2). S2: Place the mounting base (7) on top of the pier (1) and fix the support rod (15) between the two mounting bases (7); S3: Start the first hydraulic cylinder (17), the first hydraulic cylinder (17) drives the sliding seat (5) to slide toward the bridge support (3), the sliding seat (5) drives the drive rod (6) to rotate, the drive rod (6) rotates toward the pier and lifts the bridge (2). S4: After the bridge (2) is lifted to a suitable position, the temporary support structure is moved into the fixed groove (18) to provide temporary support for the bridge (2); then the lifting plate (19) is slid, and the lifting plate (19) moves the bridge support (3) onto the lifting plate (19). Then the bridge support (3) is pulled to slide on the receiving roller (21) to move the bridge support (3) out; then the bridge support (3) to be replaced is moved onto the lifting plate (19), the bridge support (3) is moved into the design position, and then the bridge (2) is lowered onto the bridge support (3).

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