CN221441330U - Jacking device for jacking bridge - Google Patents

Abstract

The utility model discloses a jacking device for bridge jacking, which belongs to the technical field of bridge jacking, and comprises a jacking mechanism and a distribution mechanism, wherein the distribution mechanism is arranged on the upper part of the jacking mechanism; the jacking mechanism comprises a jack cylinder, wherein the upper part of the jack cylinder is provided with a second connecting flange, and the distribution mechanism comprises a distribution module and a first connecting flange, wherein the lower part of the distribution module is provided with a first connecting flange, and the lower part of the first connecting flange is provided with a second connecting flange. The utility model can improve construction efficiency, ensure stability during jacking, and has strong applicability.

Description

A lifting device for bridge lifting

Technical Field

The utility model belongs to the technical field of bridge jacking, and in particular relates to a jacking device used for bridge jacking.

Background technique

The statements in this section merely provide background technical information related to the present invention and do not necessarily constitute prior art.

Three-dimensional transportation is an effective way to improve urban transportation, and urban viaducts are an important part of urban three-dimensional transportation. With the advancement of urbanization, crowds are gathering more and more obviously, and the requirements for urban transportation facilities are getting higher and higher. Therefore, some existing urban bridges are increasingly difficult to meet the requirements, and it is necessary to transform or expand the existing transportation facilities.

Bridge jacking is a way to transform existing bridges. The main process is to set up temporary supports, raise or lower the bridge structure by jacks to change its elevation, and transform the piers, bearings or main beams.

When lifting a structure with a jack, it is generally necessary to install a distribution beam to convert the single-point concentrated load of the jack into a uniformly distributed load to avoid safety accidents such as shear damage or overturning of the lifted structure. The distribution beam is located between the jack and the lifted structure, and the installation process involves high-altitude operations. Especially when the distribution beam is large, professional lifting personnel and equipment are required, which increases the threshold and danger of construction. In addition, different types of bridges require different distribution beams to cooperate with jacking. Using only one distribution beam for lifting will cause safety hazards, and using different distribution beams requires constant replacement, which is not suitable for enough application.

Utility Model Content

In view of the above problems, the utility model provides a jacking device for bridge jacking, which can improve construction efficiency, ensure stability during jacking, and has strong applicability.

In order to achieve the above purpose, the utility model adopts the following technical solutions:

A jacking device for bridge jacking includes a jacking mechanism and a distribution mechanism, wherein the distribution mechanism is arranged on the upper part of the jacking mechanism; the jacking mechanism includes a jack cylinder, wherein a second connecting flange is arranged on the upper part of the jack cylinder, and the distribution mechanism includes a distribution module and a first connecting flange, wherein the first connecting flange is arranged on the lower part of the distribution module, and the second connecting flange is arranged on the lower part of the first connecting flange.

Furthermore, a first bolt hole is arranged on the first connecting flange, a second bolt hole is arranged on the second connecting flange, and a plurality of the first bolt holes and the second bolt holes are arranged at intervals.

Furthermore, the first connecting flange and the second connecting flange are connected by connecting bolts, and the connecting bolts pass through the first bolt hole and the second bolt hole.

Furthermore, the distribution module is fixedly connected to the first connecting flange, and the hydraulic rod in the jack cylinder is fixedly connected to the second connecting flange.

Furthermore, the distribution module is a truncated cone structure, and the diameter of the upper part of the distribution module is greater than the diameter of the lower part.

Furthermore, the upper end of the distribution module is in close contact with the lower surface of the bridge, and the lower end of the distribution module is fixedly connected to the first connecting flange.

Furthermore, an anti-skid pad is provided on the upper surface of the distribution module, and the anti-skid pad is fixedly connected to the distribution module.

Furthermore, oil nozzles are arranged at the upper and lower ends of one side of the jack cylinder body, and the oil nozzles are connected to the interior of the jack cylinder body.

Furthermore, handles are provided at the left and right ends of the other side of the jack cylinder, and the handles are fixedly connected to the jack cylinder.

Furthermore, the diameters of the first connecting flange and the second connecting flange are the same.

Compared with the prior art, the utility model has the following advantages and positive effects:

The utility model jacks up the distribution mechanism through the jacking mechanism, and then jacks up the bridge, which has good stability, does not need to install the distribution beam, eliminates the process of jacking operation to hoist the distribution beam, reduces the number of construction machinery required, and improves construction efficiency.

The utility model is easy to install and disassemble. The first connecting flange and the second connecting flange are connected by connecting bolts to complete the assembly of the jacking mechanism and the distribution mechanism. In addition, the shape or size of the distribution module of the distribution mechanism can be replaced according to the weight of the bridge. Only the distribution mechanism needs to be replaced to realize the jacking of different types of bridges, and the applicability is strong.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

FIG1 is a schematic diagram of the three-dimensional structure of the jacking device of the utility model;

FIG2 is a schematic diagram of the three-dimensional structure of the distribution mechanism of Example 1 of the utility model;

FIG3 is a schematic diagram of a three-dimensional structure of the jacking mechanism of the utility model;

FIG4 is a schematic diagram of the three-dimensional structure of the distribution mechanism of Example 2 of the present utility model;

In the figure: 1-lifting mechanism; 11-oil nozzle; 12-jack cylinder; 13-handle; 2-first connecting flange; 21-first bolt hole; 3-second connecting flange; 31-second bolt hole; 4-distribution mechanism; 41-distribution module; 5-connecting bolt.

Detailed ways

It should be noted that the following detailed descriptions are all exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

Embodiment 1:

The following is a collection of accompanying drawings to describe the utility model in detail. A jacking device for bridge jacking disclosed in this embodiment, as shown in Figure 1, includes a jacking mechanism 1 and a distribution mechanism 4, and the distribution mechanism 4 is arranged on the upper part of the jacking mechanism 1; the jacking mechanism 1 includes a jack cylinder body 12, and a second connecting flange 3 is arranged on the upper part of the jack cylinder body; the distribution mechanism 4 includes a distribution module 41 and a first connecting flange 2, the first connecting flange 2 is arranged at the lower part of the distribution module 41, and the second connecting flange 3 is arranged at the lower part of the first connecting flange 2.

The bridge is lifted by the cooperation of the lifting mechanism 1 and the distribution mechanism 4. The jack of the lifting mechanism 1 lifts the distribution mechanism 4, and the distribution module 41 of the distribution mechanism 4 is in close contact with the bridge, thereby lifting the bridge. The distribution mechanism 4 can support the bridge and make the lower surface of the bridge evenly stressed.

The first connection flange 2 is provided with a first bolt hole 21, and the second connection flange 3 is provided with a second bolt hole 31. A plurality of first bolt holes 21 and second bolt holes 31 are arranged at intervals. The first connection flange 2 and the second connection flange 3 are connected by connecting bolts 5, and the connecting bolts 5 pass through the first bolt holes 21 and the second bolt holes 31.

During installation, the first bolt hole 21 of the first connecting flange 2 and the second bolt hole 31 of the second connecting flange 3 are aligned, and the connecting bolts 5 are screwed into the first bolt hole 21 and the second bolt hole 31 in sequence. The bolt connection makes it easy to install and disassemble the jacking mechanism 1 and the distribution mechanism 4, and it is convenient to replace the distribution mechanism 4. The first connecting flange 2 and the second connecting flange 3 have the same diameter, which facilitates the alignment of the first bolt hole 21 and the second bolt hole 31.

After the installation is completed, the lifting devices are arranged at intervals at the lower part of the bridge, and the intervals between the lifting devices are the same. At the same time, oil is supplied to the hydraulic cylinder body to make the hydraulic rod rise and drive the distribution module 41 to rise, thereby lifting the bridge.

The distribution module 41 is fixedly connected to the first connection flange 2, and the distribution module 41 is welded to the first connection flange 2, which is convenient for installation at the construction site. The hydraulic rod in the jack cylinder is fixedly connected to the second connection flange 3, and the top of the hydraulic rod can be welded to the lower surface of the second connection flange 3, which is convenient for lifting the distribution module 41.

As shown in Figure 2, the distribution module 41 is a truncated cone structure, and the diameter of the upper part of the distribution module 41 is larger than the diameter of the lower part. The upper end of the distribution module 41 is in close contact with the lower surface of the bridge, and the lower end of the distribution module 41 is fixedly connected to the first connecting flange 2. The cross-section of the truncated cone structure distribution module 41 gradually expands. The cross-section with a smaller area is the bottom surface, which is welded to the connecting flange. The cross-section with a larger area is the top surface, which is used to contact the structure to be lifted. The contact area between the jack and the structure to be lifted is expanded by the truncated cone structure distribution module 41 to avoid shear damage during the lifting process.

An anti-skid pad is provided on the upper surface of the distribution module 41, and the anti-skid pad is fixedly connected to the distribution module 41. The anti-skid pad can increase the friction between the upper surface of the distribution module 41 and the bridge jacking position, thereby ensuring the stability of the jacking process.

As shown in FIG3 , the upper and lower ends of one side of the jack cylinder 12 are provided with oil nozzles 11, and the oil nozzles 11 are connected to the inside of the jack cylinder 12. Hydraulic oil is supplied to the jack cylinder 12 through the oil nozzles 11. When it is necessary to lift upward, the lower oil nozzle 11 supplies oil to the jack cylinder 12 to raise the distribution mechanism 4. When it is necessary to lower, the upper oil nozzle 11 supplies oil to the jack cylinder 12 to lower the distribution mechanism 4.

The left and right ends of the other side of the jack cylinder 12 are provided with handles 13, and the handles 13 are fixedly connected to the jack cylinder 12. The direction of the jack is adjusted by the handles 13 to ensure that the jack is accurately installed, and the jack is convenient to carry and easy to operate.

Embodiment 2:

The distribution module 41 of the distribution mechanism 4 can be set to a trapezoidal table structure. When more jacks are needed for the lifting operation and the working surface is limited, a trapezoidal table-shaped distribution module 41 is shown in FIG4. By staggeredly arranging the trapezoidal table-shaped distribution modules 41, the contact area between the jack and the lifted structure can be expanded in different directions, and the construction working surface can be used to the maximum extent.

When lifting a bridge, firstly, the number of lifting devices and the shape or size of the distribution module 41 are selected according to the weight and structure of the bridge. When the weight of the bridge is large, more lifting devices can be set, and the distribution module 41 with a larger upper surface area can be selected. When the weight of the bridge is small, the number of lifting devices can be appropriately reduced, and the distribution module 41 with a smaller upper surface area can be selected, so as to facilitate the spacing of the lifting devices and have sufficient layout space.

The lower surface of most bridges is flat, but some bridges have an inclined lower surface. For jacking at the inclined position, the support stability of the distribution module 41 with a flat upper surface is insufficient. Therefore, the upper surface of the distribution module 41 can be set to an inclined surface. The distribution module 41 with an inclined surface is installed on the jacking mechanism 1 and arranged at the position where the lower surface of the bridge is an inclined surface. This can ensure the stability of the support and thus realize the jacking of the bridge.

Although the above describes the specific implementation methods of the utility model in conjunction with the accompanying drawings, it is not intended to limit the protection scope of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the protection scope of the utility model.

Claims (10)

1. The jacking device for jacking the bridge is characterized by comprising a jacking mechanism and a distribution mechanism, wherein the distribution mechanism is arranged at the upper part of the jacking mechanism; the jacking mechanism comprises a jack cylinder body, a second connecting flange is arranged on the upper portion of the jack cylinder body, the distribution mechanism comprises a distribution module and a first connecting flange, a first connecting flange is arranged on the lower portion of the distribution module, and a second connecting flange is arranged on the lower portion of the first connecting flange.

2. The jacking device for jacking a bridge as defined in claim 1, wherein said first connecting flange is provided with a first bolt hole, said second connecting flange is provided with a second bolt hole, and said first bolt hole and said second bolt hole are provided in plural at intervals.

3. A jacking device for jacking a bridge as claimed in claim 2, wherein said first and second attachment flanges are connected by attachment bolts passing through said first and second bolt holes.

4. The jacking device for jacking bridges of claim 1, wherein said distribution module is fixedly connected to a first connection flange and said hydraulic rod in said jack cylinder is fixedly connected to a second connection flange.

5. A jacking device for jacking bridges as claimed in claim 1, wherein said distribution module has a circular truncated cone configuration, and the diameter of the upper portion of said distribution module is greater than the diameter of the lower portion.

6. The jacking device for jacking the bridge according to claim 1, wherein the upper end of the distribution module is closely attached to the lower surface of the bridge, and the lower end of the distribution module is fixedly connected with the first connecting flange.

7. A jacking device for jacking a bridge as claimed in claim 1, wherein said distribution module has an upper surface provided with a non-slip mat fixedly connected to the distribution module.

8. The jacking device for jacking the bridge according to claim 1, wherein a nipple is arranged at the upper and lower ends of one side of the jack cylinder, and the nipple is communicated with the inside of the jack cylinder.

9. The jacking device for jacking the bridge according to claim 1, wherein handles are arranged at the left end and the right end of the other side of the jack cylinder body, and the handles are fixedly connected with the jack cylinder body.

10. A jacking device for jacking a bridge as claimed in claim 1, wherein the first and second attachment flanges are of the same diameter.