Bridge jacking and supporting device
By setting a convex arc surface and a concave arc surface on the first pad plate at the top of the drive cylinder piston of the bridge lifting support device, combined with the design of the positioning support, the adaptive deflection of the pad plate is achieved, solving the problem of piston stuck when the traditional device is large in lifting slope, and improving working efficiency and safety.
Patent Information
- Application Number
- CN202422341923.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-24
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-09-24
AI Technical Summary
In bridge hoisting operations, traditional jack devices can easily cause pistons to get stuck when the lifting slope is large, and it is difficult to make the contact surface smoothly fit the beam slope, which poses a risk of operation safety hazards and delays in construction period.
A bridge lifting support device is designed. By setting a convex arc surface on the top of the piston of the driving cylinder and setting an appropriate concave arc surface on the first pad, combined with the design of the positioning support, the pad can adaptively deflect, avoid piston jamming, and achieve tight support through the cooperation of the support column and the second pad.
During the lifting process, the pad plate automatically deflects to adapt to the beam body slope, avoiding piston jamming, improving the efficiency and safety of lifting operations, and reducing operating risks.
Smart Images
Figure CN222989666U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bridge jacking operation equipment, in particular to a bridge jacking support device. Background Art
[0002] In bridge jacking operations, common traditional jack devices include a base, an oil cylinder, and a columnar piston that jacks in a direction perpendicular to the oil cylinder under the action of oil pressure.
[0003] Currently, when replacing the bearings of ramp bridges with a large jacking slope, wedge-shaped steel plates are generally used to level the operation contact surface and then the jack is used for jacking.
[0004] However, since the gap between the cylinder body and the piston of the oil cylinder is very small (about 0.2 - 0.4 mm), even with wedge-shaped steel plates stuffed, the contact surface cannot be smoothly fitted with the slope of the beam body, and it is extremely easy to cause the situation of the oil cylinder and the piston of the jack being stuck. Without an auxiliary jack, it is necessary to set up an operation platform or install an auxiliary jack on the capping beam to jack up the beam body again in order to smoothly remove the stuck or even scrapped jack. The traditional jacking support operation method has great operation safety hazards and risks of wasting manpower, material resources, and delaying the construction period. In order to improve the working efficiency of ramp bridge jacking and replacing bearings and reduce the operation safety risk, it is necessary to seek a suitable bridge jacking support device. Summary of the Utility Model
[0005] The technical problem to be solved by the utility model is to provide a bridge jacking support device, in which the backing plate can automatically deflect to adapt to the slope of the beam body during jacking, avoiding the piston from being stuck.
[0006] To solve the above technical problem, the utility model provides a bridge jacking support device, including a driving cylinder and a first backing plate. The top end of the piston of the driving cylinder is provided with a convex arc surface, and the first backing plate is provided with a concave arc surface adapted to the convex arc surface. When the first backing plate deflects relative to the piston, at least part of the convex arc surface and the concave arc surface remain in contact.
[0007] The first backing plate is provided with a positioning support member for abutting against the driving cylinder, or the driving cylinder is provided with a positioning support member for abutting against the first backing plate.
[0008] As an improvement of the above solution, the convex arc surface is a spherical arc surface.
[0009] As an improvement of the above solution, the positioning support members are arranged in a circumferential array along the convex arc surface or the concave arc surface.
[0010] As an improvement of the above solution, the convex arc surface is a cylindrical surface, and the positioning and supporting members are symmetrically arranged on both sides of the convex arc surface or the concave arc surface.
[0011] As an improvement of the above solution, the positioning and supporting member unit includes a positioning pin and an elastic reset member, and the elastic reset member is compressed when the positioning pin is axially pressed.
[0012] As an improvement of the above solution, it further includes a support column and a second backing plate. The axial direction of the support column is parallel to the moving direction of the piston of the driving cylinder, and the second backing plate is arranged between the support column and the bridge.
[0013] As an improvement of the above solution, the support column includes a bolt column, a base and a torsion reset member. The base is provided with a receiving cavity adapted to the bolt column. The side wall of the bolt column is threadedly connected to the receiving cavity. The torsion reset member is arranged at the bottom of the bolt column. Both the base and the bolt column are connected to the torsion reset member. The bolt column can be driven to rotate by the torsion reset member and move axially away from the torsion reset member.
[0014] As an improvement of the above solution, the top of the bolt column is provided with a convex spherical surface, and the bottom surface of the second backing plate is provided with a concave spherical surface adapted to the top of the bolt column.
[0015] As an improvement of the above solution, the side surface of the first backing plate is provided with a flipping driving part.
[0016] As an improvement of the above solution, the top of the first backing plate is made of a flexible material.
[0017] Implementing the present utility model has the following beneficial effects:
[0018] The present utility model discloses a bridge jacking support device. By setting a convex arc surface at the top end of the piston of the driving cylinder and setting a concave arc surface on the first backing plate adapted to the convex arc surface, and by providing a positioning and supporting member in contact with the driving cylinder or the first backing plate, when the first backing plate contacts the inclined bottom surface of the bridge, the first backing plate can adaptively deflect. During the deflection of the first backing plate relative to the piston, the convex arc surface always remains at least partially in contact with the concave arc surface, realizing effective jacking and avoiding piston jamming at the same time;
[0019] At the same time, through the cooperation of the support column and the second backing plate, it is realized that the support column can closely follow the rise of the upper beam body during the bridge jacking operation, realizing close contact support, and playing a continuous and stable supporting role for the beam body during the rising process of the beam body, making the reliability of the entire bridge jacking support device high. Description of the Drawings
[0020] Figure 1It is a schematic diagram of the device of the first embodiment of a bridge jacking support device of the present utility model;
[0021] Figure 2 It is a schematic diagram of the device of the second embodiment of a bridge jacking support device of the present utility model;
[0022] Figure 3 Is Figure 2 A schematic diagram of the device of the auxiliary support mechanism. Specific implementation manners
[0023] To make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings.
[0024] As Figure 1 As shown, an embodiment of a bridge jacking support device disclosed by the present utility model includes a jacking mechanism 1. The jacking mechanism 1 specifically includes a driving cylinder 11 and a first cushion plate 12 for contacting the bottom surface of the bridge A. A convex arc surface a is provided at the top end of the piston 111 of the driving cylinder 11. The first cushion plate 12 is provided with a concave arc surface adapted to the convex arc surface a. When the first cushion plate 12 deflects relative to the piston 111, at least part of the convex arc surface a remains in contact with the concave arc surface; the first cushion plate 12 is provided with a positioning support member 121 for abutting against the driving cylinder 11, or the driving cylinder 11 is provided with a positioning support member 121 for abutting against the first cushion plate 12.
[0025] In this embodiment, a convex arc surface a is provided at the top end of the piston 111 of the driving cylinder 11, a concave arc surface adapted to the convex arc surface a is provided on the first cushion plate 12, and a positioning support member 121 for abutting against the driving cylinder 11 or the first cushion plate 12 is provided. When the first cushion plate 12 contacts the inclined bottom surface of the bridge A, the first cushion plate 12 can deflect adaptively. During the deflection of the first cushion plate 12 relative to the piston 111, at least part of the convex arc surface a always remains in contact with the concave arc surface, realizing effective jacking and avoiding jamming of the piston 111 at the same time.
[0026] In this embodiment, the positioning support member 121 is preferably provided on the first cushion plate 12 and is used for abutting against the piston 111 of the driving cylinder 11. When the first cushion plate 12 deflects relative to the piston 111, at least 2 / 3 of the convex arc surface a remains in contact with the concave arc surface. The driving cylinder 11 is preferably a hydraulic cylinder with large and stable driving force.
[0027] The convex arc surface a in this embodiment is preferably a spherical arc surface. Regardless of the slope direction of the bottom surface of the bridge A, the first cushion plate 12 of the jacking mechanism 1 can deflect freely relative to the piston 111 to adapt to jacking beams inclined in different directions.
[0028] When the top end face of the piston 111 is a spherical arc surface, the positioning and supporting member 121 is preferably arranged in a circumferential array along the convex arc surface a or the concave arc surface, so as to keep in contact with the top end face of the piston 111 when the first backing plate 12 deflects in different directions, and prevent the first backing plate 12 from detaching from the piston 111 of the driving cylinder 11, resulting in the failure of the jacking.
[0029] In addition, the convex arc surface a at the top of the piston 111 can also be a cylindrical surface. At this time, the first backing plate 12 can reciprocally swing along the circular arc track of the cylindrical surface relative to the piston 111. At this time, when the jacking mechanism 1 jacks up the bridge A, the inclination direction of the bottom surface of the beam body supported by the first backing plate 12 should be tangent to the cylindrical surface. When the top end face of the piston 111 is a cylindrical surface, the positioning and supporting member 121 is symmetrically arranged on both sides of the convex arc surface a or the concave arc surface, to prevent the first backing plate 12 from detaching from the piston 111 of the driving cylinder 11, or getting stuck with the driving cylinder 11, resulting in the failure of the jacking.
[0030] In addition, the top of the piston 111 can also be a structure in which a plane is combined with a cylindrical surface, and the cylindrical surface is symmetrically arranged on both sides of the plane, and there is a bow-shaped gap between the top of the piston 111 and the concave arc surface of the first backing plate 12; or the top of the piston 111 is a structure in which a plane is combined with a spherical arc surface, and the spherical arc surface is symmetrically arranged on both sides of the plane, and there is a bow-shaped gap between the top of the piston 111 and the concave arc surface of the first backing plate 12. During the flipping process of the first backing plate 12, the cylindrical surface and the concave arc surface always remain in contact, or the spherical arc surface and the concave arc surface remain in contact.
[0031] To facilitate adjusting the deflection direction of the first backing plate 12 so that the first backing plate 12 can better fit the inclined bottom surface of the bridge A, in this embodiment, a flipping driving part 122 is preferably provided on the side surface of the first backing plate 12. The flipping driving part 122 is a driving hole for inserting a driving lever.
[0032] The bottom of the first backing plate 12 is made of a material with a relatively high hardness such as steel, and the top of the first backing plate 12 is made of a flexible material to better fit the sloped bottom surface of the beam body.
[0033] The positioning and supporting member 121 unit includes a positioning pin and an elastic reset member (not shown in the figure). When the positioning pin is axially compressed, the elastic reset member is compressed, thereby changing the length of the entire positioning and supporting unit to adapt to the height change in different orientations during the deflection process of the first backing plate 12, and at the same time playing a role in supporting and positioning the first backing plate 12 to prevent the first backing plate 12 from getting stuck with the driving cylinder 11.
[0034] In addition, as Figure 2As shown in the figure, the present utility model also discloses a second embodiment of a bridge jacking support device. The bridge jacking support device of this embodiment further includes an auxiliary support mechanism 2. The auxiliary support mechanism 2 specifically includes a support column 21 and a second backing plate 22. The axial direction of the support column 21 is parallel to the moving direction of the piston 111 of the driving cylinder 11, and the second backing plate 22 is arranged between the support column 21 and the bridge A.
[0035] Among them, in combination with Figure 3 , the support column 21 includes a bolt column 211, a base 212, and a torsion reset member 213. The base 212 is provided with a receiving cavity adapted to the bolt column 211. The side wall of the bolt column 211 is threadedly connected to the receiving cavity. The torsion reset member 213 is arranged at the bottom of the bolt column 211. Both the base 212 and the bolt column 211 are connected to the torsion reset member 213. The bolt column 211 can be driven by the torsion reset member 213 to rotate and move axially in a direction away from the torsion reset member 213.
[0036] In this embodiment, the torsion reset member 213 is preferably a torsion spring (i.e., a torsional spring). The torsion spring is provided with an outer connection part and an inner connection part. The inner connection part is arranged at the center of the torsion spring, and the outer connection part is arranged at the outer edge of the torsion spring. The outer connection part is connected to the base 212, and a center hole b for connecting with the inner connection part is arranged at the center of the bolt column 211. The center hole b can be a blind hole with an open bottom or a through hole.
[0037] In this embodiment, the receiving cavity is preferably a hole-shaped structure that penetrates up and down and has internal threads to realize the threaded connection between the bolt column 211 and the receiving cavity, and at the same time facilitate the assembly of the torsion spring and the base 212.
[0038] In this embodiment, both the base 212 and the bolt column 211 are connected to the torsion spring, and the bolt column 211 that is threadedly connected to the base 212 and is arranged above the torsion spring helps the torsion spring to continuously and more evenly release elastic force. The automatic adaptation characteristic of the torsion spring ensures that the support column 21 can maintain stable and effective support at any time, greatly reducing the operation risk, and strongly guaranteeing the safety and reliability of the jacking operation of the bridge A, laying a solid foundation for the smooth progress of the project.
[0039] Since the bolt column 211 rotates continuously during the rising process, in order to reduce the rotation resistance, the top surface of the bolt column 211 in this embodiment is set as a convex spherical surface c. The bottom surface of the second backing plate 22 is provided with a concave spherical surface adapted to the top of the bolt column 211, so that when the contact surface between the second backing plate 22 and the bridge A is inclined, the rotating bolt column 211 can still maintain a good fitting state with the second backing plate 22 to more stably support the bridge A.
[0040] Through the cooperation of the auxiliary support mechanism 2 formed by the support columns 21 and the second backing plate 22 and the jacking mechanism 1 formed by the driving cylinder 11 and the first backing plate 12, it is convenient to jack up the sloping bridge A, avoid the piston 111 from jamming, and at the same time, during the jacking operation of the bridge A, the support column 21 can closely follow the rise of the upper beam body and rise, realizing close support, and playing a continuous and stable supporting role for the beam body during the rising process, making the entire bridge A jacking support device safe and reliable.
[0041] The above-disclosed is only a preferred embodiment of the present invention. Of course, it cannot be used to limit the scope of the rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.
Claims
1. A bridge lifting support device, characterized in that: It comprises a driving cylinder and a first pad, wherein the piston top of the driving cylinder is provided with a convex arc surface, and the first pad is provided with a concave arc surface adapted to the convex arc surface, and when the first pad is deflected relative to the piston, the convex arc surface and the concave arc surface are kept at least partially in contact with each other; The first pad is provided with a positioning support, and the positioning support is used to abut against the driving cylinder, or the driving cylinder is provided with a positioning support, and the positioning support is used to abut against the first pad.
2. The bridge lifting support device according to claim 1, characterized in that: The convex arc surface is a spherical arc surface.
3. The bridge lifting support device according to claim 2, characterized in that: The positioning support members are arranged in a circumferential array along the convex arc surface or the concave arc surface.
4. The bridge lifting support device according to claim 1, characterized in that: The convex arc surface is a cylindrical surface, and the positioning support members are symmetrically arranged on both sides of the convex arc surface or the concave arc surface.
5. The bridge lifting support device according to claim 1, characterized in that: The positioning support unit comprises a positioning pin and an elastic reset member, and the elastic reset member is compressed when the positioning pin is axially pressed.
6. The bridge lifting support device according to claim 1, characterized in that: It also includes a support column and a second pad, wherein the axial direction of the support column is parallel to the piston movement direction of the drive cylinder, and the second pad is arranged between the support column and the bridge.
7. The bridge lifting support device according to claim 6, characterized in that: The support column includes a bolt column, a base and a torsion reset component, the base is provided with a accommodating cavity adapted to the bolt column, the side wall of the bolt column is threadedly connected to the accommodating cavity, the torsion reset component is provided at the bottom of the bolt column, the base and the bolt column are both connected to the torsion reset component, the bolt column can be driven to rotate by the torsion reset component, and move axially in a direction away from the torsion reset component.
8. The bridge lifting support device according to claim 7, characterized in that: The top of the bolt column is provided with a convex spherical surface, and the bottom surface of the second pad is provided with a concave spherical surface adapted to the top of the bolt column.
9. The bridge lifting support device according to claim 1, characterized in that: A turning driving part is provided on the side surface of the first pad.
10. The bridge lifting support device according to claim 1, characterized in that: The top of the first pad is made of flexible material.