A jacking method and device for quickly replacing bridge bearings

Abstract

The present invention relates to the field of bridge technology, and in particular to a jacking method and equipment for quickly replacing bridge bearings. In response to the problem that the jacking equipment for replacing bridge bearings in the prior art cannot quickly position the bearing to be installed, the following solution is proposed, which includes: a support mechanism, which includes a base plate and a first hydraulic cylinder installed on the top surface of the base plate; a positioning mechanism, which includes a fixed sleeve rotatably connected to the top surface of the base plate, a fixed ring movable on the outer periphery of the fixed sleeve, a second hydraulic cylinder fixed on the outer periphery of the fixed ring, a clamping assembly installed at the movable end of the second hydraulic cylinder, and a fifth hydraulic cylinder installed on the outer periphery of the fixed sleeve. The bridge bearing to be replaced is clamped by the clamping assembly, thereby completing the rapid disassembly and positioning installation of the bridge bearing. The present invention can quickly and accurately position the bridge bearing during its replacement, thereby reducing the difficulty of installation, improving installation efficiency, and effectively improving safety performance during the installation process.

Description

Technical Field

[0001] The present invention relates to the technical field of bridges, and in particular to a jacking method and equipment for quickly replacing bridge supports. Background Art

[0002] Bridge bearings are important structural components that connect the superstructure and substructure of a bridge. They are located between the bridge and the pedestal and can support the bridge. Since they are under high load for a long time, the damage to the bridge bearings needs to be paid special attention. Therefore, when the bridge bearings are damaged, they need to be replaced in time.

[0003] At present, when replacing bridge bearings, corresponding jacking devices are often needed to temporarily replace the bridge bearings that need to be replaced, and then the bridge is jacked up to a certain height. Finally, the bearings to be replaced can be removed and replaced. Most of the existing jacking devices have relatively simple functions and can only lift and lower the bridge. Therefore, in the process of replacing bridge bearings, the replaced bridge bearings cannot be quickly positioned and installed, which affects the efficiency of replacement. For this reason, this solution proposes a jacking method and equipment for quickly replacing bridge bearings. Summary of the Invention

[0004] The present invention provides a jacking method and equipment for quickly replacing bridge bearings, which solves the problem in the prior art that jacking equipment for replacing bridge bearings cannot quickly locate the bearings to be installed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A jacking method and equipment for quickly replacing bridge bearings, comprising:

[0007] A supporting mechanism comprising a base plate and a first hydraulic cylinder mounted on a top surface of the base plate;

[0008] The positioning mechanism includes a fixed sleeve rotatably connected to the top surface of the base plate, a fixed ring movably mounted on the outer periphery of the fixed sleeve, a second hydraulic cylinder fixed to the outer periphery of the fixed ring, a clamping assembly mounted on the movable end of the second hydraulic cylinder, and a fifth hydraulic cylinder mounted on the outer periphery of the fixed sleeve. The fixed sleeve is mounted on the outer periphery of the first hydraulic cylinder and is coaxially arranged therewith. The movable end of the fifth hydraulic cylinder is fixedly connected to the bottom surface of the fixed ring.

[0009] The steering mechanism is installed on the top surface of the base plate and is used to drive the fixed sleeve to rotate.

[0010] Through the above technical solution, the bridge bearings can be quickly and accurately positioned during replacement, thereby reducing the difficulty of installation, improving installation efficiency, and effectively improving safety performance during the installation process.

[0011] As a further improvement of the above scheme, the steering mechanism includes a fourth hydraulic cylinder installed on the top surface of the base plate, a transmission rack fixed to the movable end of the fourth hydraulic cylinder, a fixed shaft rotatably connected to the top surface of the base plate, a transmission gear ring and an active gear ring sleeved on the outer periphery of the fixed shaft, the transmission gear ring is engaged with the transmission rack, and the outer periphery of the fixed sleeve is sleeved with a driven gear ring engaged with the active gear ring.

[0012] Through the above technical solution, the fixing sleeve can be easily driven to rotate, thereby moving the bridge support to be replaced away from the installation point.

[0013] As a further improvement of the above scheme, the clamping assembly includes a fixed frame fixed to the movable end of the second hydraulic cylinder, a clamping plate arranged in the fixed frame, and a third hydraulic cylinder installed on the outer periphery of the fixed frame for driving the clamping plate to move. The fixed frame is provided with an opening on the side away from the second hydraulic cylinder, and the clamping plate is arranged perpendicular to the opening direction.

[0014] Through the above technical solution, the bridge support to be replaced can be conveniently clamped and then removed.

[0015] As a further improvement of the above-mentioned solution, a blocking member for blocking the opening is installed on the fixed frame, and the blocking member includes a mounting plate installed on the outer wall of one side of the fixed frame where a third hydraulic cylinder is provided, a protective rod rotatably connected to the mounting plate through a connecting shaft, a linkage gear fixed to the other end of the connecting shaft, and a driving unit installed on the fixed frame for driving the linkage gear to rotate, and the driving unit cooperates with the splint, and the protective rod is located on the outside of the opening.

[0016] Through the above technical solution, the protection rod can be driven to be raised and lowered by the movement of the splint, thereby improving the safety of the process of transferring the bridge support.

[0017] As a further improvement of the above-mentioned solution, a mounting hole is provided on the outer wall of one side of the fixed frame on which the third hydraulic cylinder is installed, and the driving unit includes a linkage rack movably installed in the mounting hole and an elastic member installed between the fixed frame and the linkage rack, one end of the linkage rack extends to the outside of the fixed frame and engages with the linkage gear, and the other end of the linkage rack extends into the fixed frame and cooperates with the splint.

[0018] Through the above technical solution, the movement of the linkage rack is coordinated with the splint, thereby achieving the purpose of automatically driving the protective rod to be raised and lowered.

[0019] As a further improvement of the above scheme, the elastic member includes a fixed tube fixed to the outer periphery of the fixed frame, a movable column movably sleeved in the fixed tube and a spring fixed to one end of the movable column, the other end of the spring is fixed to the inner wall of the fixed tube, the outer periphery of the movable column is consistent with the inner ring of the fixed tube, and the other end of the movable column extends to the outside of the fixed tube and is fixed to the outer wall of the linkage rack.

[0020] Through the above technical solution, the expansion and contraction of the elastic member is utilized to drive the linkage rack to move.

[0021] As a further improvement of the above-mentioned scheme, a protective mechanism is also installed on the outer periphery of the fixed sleeve, and the protective mechanism includes a storage sleeve fixed on the outer periphery of the fixed sleeve, a movable plate movably arranged in the storage sleeve, and a connecting rod hinged to the outer periphery of the fixed end of the second hydraulic cylinder. The storage sleeve is located below the fixed ring and is arranged parallel to the second hydraulic cylinder. The top surface of the storage sleeve is provided with a connecting groove arranged along its length direction. The bottom of the connecting rod is hinged to the top surface of the movable plate through the connecting groove, and one end of the movable plate extends to the outside of the storage sleeve.

[0022] Through the above technical solution, after the bridge support is lifted, the movable plate can be automatically extended to the bottom of the bridge support, thereby playing the role of supporting the bridge support when the bridge support accidentally falls.

[0023] A method for using a jacking device for quickly replacing a bridge bearing comprises the following steps:

[0024] S1. Place the jacking device on one side of the bridge support to be replaced, then start the first hydraulic cylinder to extend, so that the first hydraulic cylinder replaces the old bridge support to support the bridge, and then completely disassemble the old bridge support from the connecting parts between the bridge and the pier, thereby completing the step of separating the old bridge support from the bridge;

[0025] S2. Then, the second hydraulic cylinder is activated to extend, so that the bridge bearing enters the inner side of the fixing frame and abuts against the side of the fixing frame facing the opening. Then, the old bridge bearing is clamped with the clamping plate. While clamping the bridge bearing to be replaced, the protective rod is lowered at the same time. Then, the steering mechanism is activated to move it away from the installation position.

[0026] S3, start the third hydraulic cylinder to retract, thereby driving the clamping plate to move back and loosen the old bridge support, then remove the old bridge support from the clamping assembly, and then clamp the new bridge support with the clamping assembly, and finally rotate the positioning mechanism to move it to the installation position for installation;

[0027] S4. After the installation is completed, the clamping assembly is separated from the bridge support, and then the jacking equipment is removed from under the bridge to complete the replacement of the bridge support.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. Through the coordination among the supporting mechanism, the positioning mechanism and the steering mechanism, when replacing the bridge bearing, the supporting mechanism can be first used to support the bottom of the bridge so that it can assume the role of the bridge bearing, and then the bridge bearing to be replaced can be removed, and the removed bearing can be transferred to a position deviating from the installation point through the clamping mechanism, and then the new bridge bearing can be clamped and transferred to the installation point using the clamping assembly, so that it can reach the installation point accurately and quickly, thereby reducing the difficulty of installation and speeding up the efficiency of replacement.

[0030] 2. By setting the blocking piece, the protective rod can be automatically lowered when the splint clamps the bridge support, so that it can block the opening of the fixed frame. At the same time, the protective rod can be automatically raised when the splint loosens the bridge support.

[0031] 3. Through the setting of the protective mechanism, the movable plate can be automatically extended to the bottom of the bridge support during the process of lifting the bridge support, thereby preventing the bridge support from falling during the transfer of the bridge support, thereby improving the safety of construction. At the same time, the movable plate can also be automatically retracted when the clamping assembly lowers the bridge support. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A perspective view of the present invention;

[0033] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0034] Figure 3 for Figure 1 Front sectional view of the middle protection mechanism;

[0035] Figure 4 It is a front view of the present invention;

[0036] Figure 5 A top view of the present invention;

[0037] Figure 6 for Figure 1 Schematic diagram of the structure when the protective rod of the clamping assembly is opened.

[0038] Description of main symbols:

[0039] 1. Base plate; 2. First hydraulic cylinder; 3. Fixed sleeve; 4. Fixed ring; 5. Second hydraulic cylinder; 6. Connecting rod; 7. Storage sleeve; 8. Connecting groove; 9. Movable plate; 10. Fixed frame; 11. Third hydraulic cylinder; 12. Linkage rack; 13. Clamping plate; 14. Protective rod; 15. Driven gear ring; 16. Driving gear ring; 17. Transmission gear ring; 18. Fixed shaft; 19. Transmission rack; 20. Fourth hydraulic cylinder; 21. Elastic member; 22. Linkage gear; 23. Connecting shaft; 24. Mounting plate; 25. Fifth hydraulic cylinder; 26. Anti-slip pad. DETAILED DESCRIPTION

[0040] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0041] Example 1:

[0042] Please combine Figure 1 , a jacking device for quickly replacing a bridge bearing in this embodiment includes:

[0043] The supporting mechanism includes a base plate 1 and a first hydraulic cylinder 2 installed on the top surface of the base plate 1. The first hydraulic cylinder 2 is used to lift the bridge when replacing the bridge support, temporarily serving as the bridge support.

[0044] The positioning mechanism includes a fixed sleeve 3 rotatably connected to the top surface of the base plate 1, a fixed ring 4 movable sleeve arranged on the outer periphery of the fixed sleeve 3, a second hydraulic cylinder 5 fixed on the outer periphery of the fixed ring 4, a clamping assembly installed at the movable end of the second hydraulic cylinder 5 and a fifth hydraulic cylinder 25 installed on the outer periphery of the fixed sleeve 3. The outer periphery of the fixed sleeve 3 is provided with a limit groove opened along its axial direction. The inner ring of the fixed ring 4 is fixed with a limit block, one end of the limit block extends into the limit groove and slides with it. Through the arrangement of the limit block and the limit groove, the fixed ring 4 can move along the axial direction of the fixed sleeve 3 and can also rotate synchronously with the fixed sleeve 3. The fixed sleeve 3 is sleeved on the outer periphery of the first hydraulic cylinder 2 and is coaxially arranged with it. The movable end of the fifth hydraulic cylinder 25 is fixed to the bottom surface of the fixed ring 4. The clamping assembly includes a fixed frame 10 fixed to the movable end of the second hydraulic cylinder 5, a splint 13 arranged in the fixed frame 10 and a third hydraulic cylinder 11 installed on the outer periphery of the fixed frame 10 for driving the splint 13 to move. , an anti-slip pad is installed on the outer wall of the side of the clamp 13 away from the third hydraulic cylinder 11, and an opening is provided on the side of the fixed frame 10 away from the second hydraulic cylinder 5, and the clamp 13 is arranged perpendicular to the opening direction. When replacing the bridge support, start the second hydraulic cylinder 5 to extend, so that the bridge support enters the inner side of the fixed frame 10 and is pressed against the side of the fixed frame 10 facing the opening, and then start the third hydraulic cylinder 11 to extend, use the clamp 13 to clamp the bridge support to be replaced, and then start the fifth hydraulic cylinder 25 to extend, so as to lift the clamped bridge support and separate it from the bottom bridge pier, and then rotate the clamping assembly to move the old bridge support away from the installation position. Later, when installing a new bridge support, you only need to loosen the old bridge support, and then add the new bridge support using the clamping assembly, and then rotate the clamping assembly to make it rotate to the same angle as when the bridge support was disassembled before, so that the new bridge support can be accurately moved to the installation point.

[0045] The steering mechanism is mounted on the top surface of the base plate 1 and is used to drive the fixed sleeve 3 to rotate. The steering mechanism includes a fourth hydraulic cylinder 20 mounted on the top surface of the base plate 1, a transmission rack 19 fixed to the movable end of the fourth hydraulic cylinder 20, a fixed shaft 18 rotatably connected to the top surface of the base plate 1, a transmission gear ring 17 and an active gear ring 16 sleeved on the outer periphery of the fixed shaft 18, the transmission gear ring 17 meshes with the transmission rack 19, and the outer periphery of the fixed sleeve 3 is sleeved with a driven gear ring 15 meshing with the active gear ring 16. The transmission rack 19 is driven to move by the extension and contraction of the fourth hydraulic cylinder 20, and the fixed shaft 18 is driven to rotate by the movement of the transmission rack 19. Finally, the purpose of starting the rotation of the fixed sleeve 3 is achieved, and the rotation angle of the positioning mechanism can be conveniently controlled.

[0046] The implementation principle of this embodiment is: when replacing a bridge support, first place the jacking equipment on one side of the bridge support to be replaced, and then start the first hydraulic cylinder 2 to extend, so that the first hydraulic cylinder 2 is supported on the bottom of the bridge, and then the bridge support to be replaced is removed. During removal, the connecting parts between the bridge support and the bridge and the pier are completely disassembled, and then the second hydraulic cylinder 5 is started to extend, so that the bridge support enters the inner side of the fixed frame 10 and is pressed against the side of the fixed frame 10 facing the opening, and then the third hydraulic cylinder 11 is started to extend, and the bridge support to be replaced is clamped by the splint 13, and then the fifth hydraulic cylinder 25 is started to extend, thereby lifting the clamped bridge and separating it from the bottom pier, and then the fourth hydraulic cylinder 25 is started to extend. The hydraulic cylinder 20 extends, and the fourth hydraulic cylinder 20 drives the transmission rack 19 to move after extension. After the transmission rack 19 moves, it drives the transmission gear ring 17 to rotate, so that the fixed shaft 18 rotates at the same time. After the fixed shaft 18 rotates, it drives the active gear ring 16 to rotate. After the active gear ring 16 rotates, it drives the driven gear ring 15 to rotate, so that the fixed sleeve 3 rotates, and the bridge bearing to be moved away from the installation position. When installing a new bridge bearing, you only need to loosen the old bridge bearing, and then clamp the new bridge bearing with the clamping assembly, and then rotate the clamping assembly to make it rotate to the same angle as when the bridge bearing was disassembled before, so that the new bridge bearing can be accurately moved to the installation point, thereby achieving the purpose of rapid positioning and disassembly.

[0047] Example 2:

[0048] Combine Figure 1-2 and Figure 4-6, based on Example 1, this embodiment is further improved in that: a blocking member for blocking the opening is installed on the fixed frame 10, and the blocking member includes a mounting plate 24 installed on the outer wall of one side of the fixed frame 10 provided with the third hydraulic cylinder 11, a protective rod 14 rotatably connected to the mounting plate 24 through a connecting shaft 23, a linkage gear 22 fixed to the other end of the connecting shaft 23, and a driving unit installed on the fixed frame 10 for driving the linkage gear 22 to rotate, and the driving unit cooperates with the splint 13, the protective rod 14 is located on the outside of the opening, and a mounting hole is provided on the outer wall of one side of the fixed frame 10 provided with the third hydraulic cylinder 11, the driving unit includes a linkage rack 12 movably installed in the mounting hole and an elastic member 21 installed between the fixed frame 10 and the linkage rack 12, one end of the linkage rack 12 extends to the fixed frame The outer side of the fixed frame 10 is meshed with the linkage gear 22, and the other end of the linkage rack 12 extends into the fixed frame 10 and cooperates with the splint 13. When the splint 13 is in the initial state, the outer wall of one side of the splint 13 is pressed against the end of the linkage rack 12 located in the fixed frame 10. At this time, the elastic member is in a stretched state, and the protective rod 14 is also in an open state. The opening of the fixed frame 10 can pass through physically at will. After the splint 13 clamps the bridge support, the splint 13 loses the squeezing effect on the linkage rack 12, and the linkage rack 12 will also move toward the inside of the fixed frame 10 under the action of the elastic member, thereby driving the linkage gear 22 to rotate, and then the protective rod 14 can automatically relax and block the opening of the fixed frame 10 to prevent the bridge support from slipping out of the opening, thereby playing a protective role.

[0049] The elastic member 21 includes a fixed cylinder fixed to the outer periphery of the fixed frame 10, a movable column movably sleeved in the fixed cylinder, and a spring fixed to one end of the movable column. The other end of the spring is fixedly connected to the inner wall of the fixed cylinder, the outer periphery of the movable column coincides with the inner ring of the fixed cylinder, and the other end of the movable column extends to the outside of the fixed cylinder and is fixed to the outer wall of the linkage rack 12. The movable column moves synchronously with the linkage rack 22. When the linkage rack 22 is squeezed, the movable column moves toward the outside of the fixed cylinder, and the spring is also stretched. After the linkage rack 22 loses pressure, the spring restores its deformation, thereby driving the movable column to retract into the inside of the fixed cylinder, and the linkage rack 22 also moves toward the inside of the fixed frame 10.

[0050] When the third hydraulic cylinder 11 is extended, the splint 13 is driven to clamp the bridge support, and the splint 13 gradually loses its pressing effect on the linkage rack 12 until it is out of contact with the linkage rack 12. In this process, the spring in the elastic member 21 also contracts, thereby driving the linkage rack 12 to move toward the inside of the fixed frame 10. When the linkage rack 12 moves, it drives the linkage gear 22 to rotate, thereby driving the protective rod 14 to rotate at the same time until the protective rod 14 is horizontal, and then the protective rod 14 can be used to block the opening of the fixed frame 10.

[0051] On the contrary, when the clamped bridge support is released, the third hydraulic cylinder 11 contracts and drives the clamping plate 13 to move to the side close to the connecting hole. When the clamping plate 13 contacts the linkage rack 12, the linkage rack 12 can be squeezed to the outside of the fixed frame 10, and then the protective rod 14 can be gradually lifted up again.

[0052] Example 3:

[0053] Combine Figure 1 、 Figure 3 and Figure 4-5 Based on Example 1, this embodiment is further improved in that a protective mechanism is further installed on the outer periphery of the fixed sleeve 3, the protective mechanism including a storage sleeve 7 fixed to the outer periphery of the fixed sleeve 3, a movable plate 9 movably arranged in the storage sleeve 7 and a connecting rod 6 hinged to the outer periphery of the fixed end of the second hydraulic cylinder 5, the storage sleeve 7 is located below the fixed ring 4 and is arranged parallel to the second hydraulic cylinder 5, the top surface of the storage sleeve 7 is provided with a connecting groove 8 arranged along its length direction, the bottom of the connecting rod 6 is hinged to the top surface of the movable plate 9 through the connecting groove 8, one end of the movable plate 9 extends to the outside of the storage sleeve 7, and the outer periphery of the movable plate 9 is consistent with the inner circle of the storage sleeve 7.

[0054] The implementation principle of this embodiment is: in the process of the fixed ring 4 rising to lift the bridge support, the second hydraulic cylinder 5 also moves up synchronously. After the second hydraulic cylinder 5 moves up, it drives the movable plate 9 to move to the outside of the storage sleeve 7 through the connecting rod 6, so that the movable plate 9 can be gradually extended to the bottom of the lifted bridge support, so that the bottom of the bridge support can be supported to prevent it from falling in the process of accidental falling of the bridge support. At the same time, in the process of lowering the clamped bridge support, the movable plate 9 can be driven by the connecting rod to move back to the inside of the storage sleeve 7, so that it is moved away from the bottom of the bridge support, and thus will not affect the installation of the bridge support.

[0055] The above embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A jacking device for quickly replacing bridge bearings, characterized in that: include: A supporting mechanism comprising a base plate and a first hydraulic cylinder mounted on a top surface of the base plate; The positioning mechanism includes a fixed sleeve rotatably connected to the top surface of the base plate, a fixed ring movably mounted on the outer periphery of the fixed sleeve, a second hydraulic cylinder fixed to the outer periphery of the fixed ring, a clamping assembly mounted on the movable end of the second hydraulic cylinder, and a fifth hydraulic cylinder mounted on the outer periphery of the fixed sleeve. The fixed sleeve is mounted on the outer periphery of the first hydraulic cylinder and is coaxially arranged therewith. The movable end of the fifth hydraulic cylinder is fixedly connected to the bottom surface of the fixed ring. A steering mechanism, which is mounted on the top surface of the base plate and is used to drive the fixed sleeve to rotate; The clamping assembly includes a fixed frame fixed to the movable end of the second hydraulic cylinder, a clamping plate arranged in the fixed frame, and a third hydraulic cylinder installed on the outer periphery of the fixed frame for driving the clamping plate to move. The fixed frame is provided with an opening on a side away from the second hydraulic cylinder, and the clamping plate is arranged perpendicular to the opening direction. The fixing frame is provided with a blocking member for blocking the opening, the blocking member comprising a mounting plate mounted on an outer wall of a side of the fixing frame provided with a third hydraulic cylinder, a protective rod rotatably connected to the mounting plate via a connecting shaft, a linkage gear fixed to the other end of the connecting shaft, and a driving unit mounted on the fixing frame for driving the linkage gear to rotate, wherein the driving unit cooperates with the clamping plate, and the protective rod is located outside the opening; A mounting hole is provided on an outer wall of one side of the fixed frame on which the third hydraulic cylinder is mounted, and the driving unit includes a linkage rack movably mounted in the mounting hole and an elastic member mounted between the fixed frame and the linkage rack, one end of the linkage rack extends to the outside of the fixed frame and meshes with the linkage gear, and the other end of the linkage rack extends into the fixed frame and cooperates with the clamping plate; The elastic member includes a fixed cylinder fixed to the outer periphery of the fixed frame, a movable column movably sleeved in the fixed cylinder, and a spring fixed to one end of the movable column, the other end of the spring is fixedly connected to the inner wall of the fixed cylinder, the outer periphery of the movable column is consistent with the inner ring of the fixed cylinder, and the other end of the movable column extends to the outside of the fixed cylinder and is fixedly connected to the outer wall of the linkage rack.

2. The jacking device for rapid replacement of bridge bearings according to claim 1, characterized in that: The steering mechanism includes a fourth hydraulic cylinder installed on the top surface of the base plate, a transmission rack fixed to the movable end of the fourth hydraulic cylinder, a fixed shaft rotatably connected to the top surface of the base plate, a transmission gear ring and an active gear ring sleeved on the outer periphery of the fixed shaft, the transmission gear ring meshing with the transmission rack, and the outer periphery of the fixed sleeve is sleeved with a driven gear ring meshing with the active gear ring.

3. The jacking device for rapid replacement of bridge bearings according to claim 1, characterized in that: A protective mechanism is also installed on the periphery of the fixed sleeve, and the protective mechanism includes a storage sleeve fixed on the periphery of the fixed sleeve, a movable plate movably arranged in the storage sleeve, and a connecting rod hinged to the periphery of the fixed end of the second hydraulic cylinder. The storage sleeve is located below the fixed ring and is arranged parallel to the second hydraulic cylinder. The top surface of the storage sleeve is provided with a connecting groove arranged along its length direction. The bottom of the connecting rod is hinged to the top surface of the movable plate through the connecting groove, and one end of the movable plate extends to the outside of the storage sleeve.

4. A method for using a jacking device for quickly replacing a bridge bearing according to any one of claims 1 to 3, characterized in that: The following steps are involved: S1. Place the jacking device on one side of the bridge bearing to be replaced, then start the supporting mechanism to replace the bridge bearing to support the bridge, and then remove the bridge bearing; S2, starting the clamping assembly to clamp the bridge support to be replaced, and then starting the steering mechanism to move it away from the installation position; S3. Remove the old bridge bearing from the clamping assembly, then clamp the new bridge bearing with the clamping assembly, and then move it to the installation position for installation; S4. After the installation is completed, separate the clamping assembly from the bridge support, and then remove the jacking equipment from under the bridge.

Images