Synchronous jacking device of bridge

Abstract

The utility model discloses a synchronous jacking device of a bridge, which is used for carrying out jacking operation on the bridge with a plurality of beam bodies and comprises at least one supporting platform and a jacking structure arranged at the top of the supporting platform, the supporting platform is arranged below the plurality of beam bodies, and the jacking structure is arranged on the top of the supporting platform. The movable end of the jacking structure is fixedly connected with each beam body, and when the jacking structure works, the multiple beam bodies can be jacked up synchronously. According to the utility model, the jacking structure is fixedly connected with each beam body, so that the jacking structure can jack up the plurality of beam bodies synchronously, the damage to the whole structure of the bridge in the jacking operation is avoided, and the stability of the whole structure of the bridge is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to a synchronous jacking device for a bridge. Background Art

[0002] The bridge jacking project is a project to repair or replace aging and worn bridge bearings. The bridge beam is lifted to separate it from the bridge piers, thereby repairing and replacing the bridge piers.

[0003] In the prior art, a jacking work platform is generally used to lift the bridge beams. However, the existing bridges are often combined box beams. When performing the lifting operation, a jack is often configured under each beam. However, in actual operation, the lifting rate is often difficult to maintain accurate consistency, resulting in difficulty in ensuring synchronous lifting of the bridge beams, thereby causing damage to the bridge structure. Utility Model Content

[0004] The utility model aims to provide a synchronous jacking device for a bridge, so as to realize the synchronous jacking of a plurality of beams of the bridge.

[0005] The utility model is realized through the following technical solutions.

[0006] A synchronous jacking device for a bridge is used for jacking a bridge with multiple beams, comprising at least one supporting platform and a jacking structure arranged on the top of the supporting platform, wherein the supporting platform is arranged below the multiple beams, and the movable end of the jacking structure is fixedly connected to each of the beams. When the jacking structure is working, the multiple beams can be jacked up synchronously.

[0007] As a further improvement of the present invention, the jacking structure includes a plurality of jacks and connecting members, the connecting members are extended along the length direction of the beam body, the lower end of the connecting member is movably connected to the plurality of jacks, and the upper end is fixedly connected to the plurality of beam bodies.

[0008] As a further improvement of the present invention, a plurality of the jacks are evenly spaced apart along the length direction of the connecting member.

[0009] As a further improvement of the utility model, a mounting plate is provided between the multiple jacks and the supporting platform, the mounting plate is arranged between the supporting platform and the multiple jacks, the mounting plate and the connecting piece are stacked, the upper end surface of the mounting plate is fixedly connected to the multiple jacks, and the lower end surface of the mounting plate is connected to the supporting platform.

[0010] As a further improvement of the present invention, a plurality of temporary supports are provided between the connecting member and the mounting plate, and one end of the temporary support abuts against the lower end of the connecting member, and the other end abuts against the upper end of the mounting plate.

[0011] As a further improvement of the present invention, the temporary support includes a support and a movable member, and the movable member is movably mounted on the support so that the height of the movable member relative to the support is adjustable.

[0012] As a further improvement of the present invention, the temporary support includes a support and a movable member, and the movable member is movably mounted on the support so that the height of the movable member relative to the support is adjustable.

[0013] As a further improvement of the utility model, the movable part is sleeved outside the support, the inner surface of the movable part is provided with an internal thread, and the surface of the support is provided with an external thread matching the internal thread.

[0014] As a further improvement of the present invention, the number of the supporting platforms is two, and they are symmetrically arranged on both sides of the pier, and the tops of the two supporting platforms are provided with the jacking structure.

[0015] As a further improvement of the present invention, the support platform includes a plurality of support columns and a support panel, and the support panel is arranged on the top of the support column.

[0016] As a further improvement of the present invention, a plurality of obliquely arranged connecting rods are provided between adjacent support columns.

[0017] Beneficial effects of the utility model:

[0018] The utility model provides a synchronous jacking device for a bridge. Through the fixed connection between the jacking structure and each beam body, the jacking structure can jack up multiple beam bodies synchronously, avoiding damage to the overall structure of the bridge during the jacking operation and ensuring the stability of the overall structure of the bridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following is a detailed description of the preferred implementation examples of the present invention with reference to the accompanying drawings to help understand the purpose and advantages of the present invention, wherein:

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 It is a side view of the utility model;

[0022] Figure 3 It is a structural schematic diagram of the temporary support in the utility model;

[0023] In the figure:

[0024] 1. Support platform; 11. Support column; 12. Support panel; 13. Connecting rod; 2. Lifting structure; 21. Jack; 22. Connecting piece; 23. Mounting plate; 3. Beam; 4. Temporary support; 41. Bearing; 42. Movable part; 5. Pier. DETAILED DESCRIPTION

[0025] The utility model is further described in detail below based on the accompanying drawings and implementation cases.

[0026] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. The words "inside" and "outside" refer to the direction toward or away from the geometric center of a specific component, respectively. They are relative concepts, and therefore may change accordingly according to different locations and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0027] This embodiment provides a synchronous jacking device for a bridge, which is used for jacking a bridge having a plurality of beams 3. Figures 1 to 3 , includes at least one supporting platform 1, the supporting platform 1 is located below a plurality of beams 3, a jacking structure 2 is provided on the top of the supporting platform 1, a movable end of the jacking structure 2 is fixedly connected to each beam 3, when the jacking structure 2 is working, it can jack up a plurality of beams 3 synchronously, ensuring that the connection structure between the beams 3 will not be damaged during the jacking operation.

[0028] Specifically, the jacking structure 2 includes a plurality of jacks 21 and a connecting member 22. The connecting member 22 is extended along the length direction of the beam body 3. The upper surface of the connecting member 22 is connected to the plurality of jacks 21, and the lower surface is fixedly connected to each beam body 3 through an anchor. During the jacking operation, the movable end of the jack 21 moves upward to lift the connecting member 22, thereby driving the plurality of beam bodies 3 fixedly connected to the connecting member 22 to be lifted synchronously.

[0029] At the same time, multiple jacks 21 are evenly spaced along the axial direction of the connecting member 22. When the connecting member 22 is subjected to the lifting force of the jacks 21, each part of the connecting member 22 can be evenly stressed, which helps to improve the stability of the connecting member 22 when being lifted, thereby improving the stability of the beam body 3 when being lifted.

[0030] In this embodiment, since the jack 21 needs to provide a large lifting force in the jacking operation of the bridge, the jack 21 is selected as a hydraulic jack. The hydraulic jack can achieve precise control of the lifting force on the one hand, and can carry a large load on the other hand.

[0031] Furthermore, a mounting plate 23 is provided between the multiple jacks 21 and the supporting platform 1. The mounting plate 23 is provided between the supporting platform 1 and the multiple jacks 21. The mounting plate 23 and the connecting member 22 are symmetrically arranged. The upper surface of the mounting plate 23 is connected to the multiple jacks 21, and the lower surface of the mounting plate 23 is connected to the supporting platform 1. In the actual construction process, when the beam 3 of the bridge is not lifted, the space between the beam 3 and the supporting platform 1 is limited, and the operation of the operator is restricted. The multiple jacks 21 are integrated together by the mounting plate 23. During the operation, the jacks 21 can be connected to the mounting plate 23 first, and then the two can be installed together on the supporting platform 1, which simplifies the operation and reduces the difficulty of construction.

[0032] Preferably, after the jack 21 completes the lifting action, a plurality of temporary supports 4 are arranged between the connecting member 22 and the mounting plate 23, one end of the temporary support 4 is connected to the lower surface of the connecting member 22, and the other end is connected to the upper surface of the mounting plate 23. The temporary support 4 can bear the pressure exerted on the connecting member 22, thereby dispersing the pressure exerted on the jack 21 and preventing the jack 21 from being damaged due to excessive pressure.

[0033] Specifically, the temporary support 4 includes a support 41 and a movable part 42. The support 41 is arranged on the mounting plate 23. The top of the movable part 42 is connected to the lower surface of the connecting part 22. The movable part 42 is sleeved on the support 41. The inner surface of the movable part 42 has an internal thread, and the outer surface of the support 41 has an external thread, that is, rotating the movable part 42 can adjust the height of the top of the movable part 42. In actual use, the height of the movable part 42 can be adjusted according to the lifting height of the jack 21. The adjustable height of the movable part 42 relative to the support 41 not only facilitates the disassembly and assembly of the temporary support 4, but also enables the temporary support 4 to be suitable for different lifting heights.

[0034] At the same time, the support 41 and the movable member 42 are connected by threads, so that the temporary support 4 has a higher structural strength.

[0035] During the jacking operation, in order to improve the stability of the beam body 3 when being jacked, two supporting platforms 1 are set up, and the two supporting platforms 1 are symmetrically arranged on both sides of the bridge pier. At the same time, a jacking structure 2 is provided on each supporting platform 1. During the jacking operation, the two jacking structures 2 are used to jack up multiple beam bodies 3 to prevent the beam body 3 from tilting and shifting when being jacked, thereby ensuring the stability of the beam body 3 during the jacking process.

[0036] In this embodiment, the support platform 1 includes a plurality of support columns 11 and a support panel 12. The support panel 12 is fixedly connected to the top of the plurality of support columns 11, that is, the support panel 12 is supported by the plurality of support columns 11. At the same time, an inclined connecting rod 13 is connected between adjacent support columns 11, which helps to improve the structural strength of the support columns 11, thereby improving the structural stability of the support platform 1.

[0037] Finally, it should be noted that the above implementation cases are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the above implementation cases, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above implementation cases, or replace some of the technical features therein with equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the implementation cases of the utility model.

Claims

1. A synchronous jacking device for a bridge, used for jacking a bridge having a plurality of beams (3), characterized in that: The invention comprises at least one supporting platform (1) and a lifting structure (2) arranged on the top of the supporting platform (1); the supporting platform (1) is arranged below a plurality of beam bodies (3); a movable end of the lifting structure (2) is fixedly connected to each beam body (3); and when the lifting structure (2) is in operation, the plurality of beam bodies (3) can be lifted synchronously.

2. A synchronous lifting device for a bridge according to claim 1, characterized in that: The jacking structure (2) comprises a plurality of jacks (21) and a connecting member (22), wherein the connecting member (22) is extended along the length direction of the beam body (3), the lower surface of the connecting member (22) is connected to the plurality of jacks (21), and the upper surface is fixedly connected to the plurality of beam bodies (3).

3. The synchronous lifting device for a bridge according to claim 2, characterized in that: The plurality of jacks (21) are evenly spaced along the length direction of the connecting member (22).

4. A synchronous lifting device for a bridge according to claim 2 or 3, characterized in that: A mounting plate (23) is provided between the plurality of jacks (21) and the support platform (1); the mounting plate (23) matches the shape of the connecting member (22); the upper surface of the mounting plate (23) is fixedly connected to the plurality of jacks (21), and the lower surface is connected to the support platform (1).

5. The synchronous lifting device for a bridge according to claim 4, characterized in that: A plurality of temporary supports (4) are provided between the connecting member (22) and the mounting plate (23), wherein one end of the temporary support (4) is connected to the lower surface of the connecting member (22) and the other end is connected to the upper surface of the mounting plate (23).

6. The synchronous lifting device for a bridge according to claim 5, characterized in that: The temporary support (4) comprises a support (41) and a movable member (42), wherein the movable member (42) is movably mounted on the support (41) so that the height of the movable member (42) relative to the support (41) is adjustable.

7. The synchronous lifting device for a bridge according to claim 6, characterized in that: The movable member (42) is sleeved outside the support (41); the inner surface of the movable member (42) is provided with an internal thread, and the outer surface of the support (41) is provided with an external thread matching the internal thread.

8. The synchronous lifting device for a bridge according to claim 1, characterized in that: The number of the supporting platforms (1) is two, and they are symmetrically arranged on both sides of the pier (5), and the tops of the two supporting platforms (1) are both provided with the jacking structure (2).

9. A synchronous lifting device for a bridge according to claim 1 or 8, characterized in that: The support platform (1) comprises a plurality of support columns (11) and a support panel (12) which are arranged at intervals from each other, and the plurality of support columns (11) are fixedly connected to the bottom surface of the support panel (12).

10. The synchronous lifting device for a bridge according to claim 9, characterized in that: A plurality of obliquely arranged connecting rods (13) are provided between adjacent supporting columns (11).

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