Bridge pushing device

Abstract

The utility model discloses a bridge pushing device which comprises a pushing equipment body arranged on a temporary pier, an embedded part is arranged on the temporary pier, and an inserting hole is formed in the embedded part. And a connecting plate is fixedly arranged at the bottom of the pushing equipment, and is connected with the temporary pier through a connecting piece and an inserting hole. When the pushing device is installed, accurate positioning is not needed, installation is not affected by protruding screws on temporary piers, and the installation process is simple and convenient.

Description

Technical Field

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

[0002] With the continuous improvement of the level of bridge design and construction technology in my country, various continuous steel box girder bridges have emerged in the fields of highways, urban transportation, railways, etc. The jacking method has been widely used in its construction due to its advantages such as small footprint, no impact on traffic under the bridge, no need for large-scale lifting equipment, safety, reliability, and low cost. The jacking method construction is to set up a prefabrication yard behind the abutment along the axis of the bridge, and set up steel guide beams, temporary piers, slides, horizontal jacks (also called jacking force devices or jacking force devices), etc. During actual construction, after the beam body is processed in sections and connected longitudinally into a whole, the horizontal jack is used to apply force, and the beam is pushed forward section by section with the help of slides, sliders, etc., and the beam is dropped after it is in place.

[0003] The jacking is done by jacking equipment. The jacking equipment is usually fixed on the temporary pier by bolts, specifically by pre-embedded screws and then fixed by lug nuts. This method has the following problems: the pre-embedded screws must protrude from the surface of the temporary pier, and during installation, the screws and lugs must be aligned when the jacking equipment is lifted, which undoubtedly increases the difficulty of installing the jacking equipment. Utility Model Content

[0004] The utility model aims to overcome the deficiencies of the prior art and provide a bridge jacking device, which does not require precise positioning during installation, has no protruding screws on the temporary piers to affect the installation, and has a simple and convenient installation process.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] A bridge pushing device comprises a pushing device body arranged on a temporary pier,

[0007] The temporary pier is provided with embedded parts, and the embedded parts form plug-in holes;

[0008] A connecting plate is fixedly provided at the bottom of the jacking device, and the connecting plate is connected to the temporary pier through a connecting piece and a plug hole.

[0009] Furthermore, the embedded part includes a bottom tube and side tubes symmetrically arranged on both sides of the bottom tube, and a clamping rod for preventing the connection part from withdrawing is arranged in the side tube, and the clamping rod is connected to the side tube through an elastic member;

[0010] The connecting piece comprises a T-shaped structure, and a clamping groove adapted to the clamping rod is provided in the middle of the connecting piece.

[0011] Furthermore, the connecting member comprises a connecting rod, and a nut is threadedly connected to the top end of the connecting rod.

[0012] Furthermore, the bottom tube and the side tube are an integrated structure.

[0013] Furthermore, the bottom tube and the side tube are made of stainless steel.

[0014] Furthermore, the bottom end of the connecting rod is a truncated cone structure.

[0015] Furthermore, an anti-rotation platform is provided between the bottom end of the connecting rod and the slot, the inner hole of the bottom cylinder is a rectangular hole, and the anti-rotation platform extends into the bottom cylinder and is matched with the inner hole of the bottom cylinder.

[0016] The beneficial effects of the utility model are:

[0017] 1) The jacking device of the utility model does not require precise positioning during installation, and there are no protruding screws on the temporary pier to affect the installation, so the installation process is simple and convenient.

[0018] 2) When the connector is inserted into the socket hole, if there is still a gap between the bottom of the slot and the connecting rod, the gap can be eliminated by tightening the nut, thereby ensuring that the nut presses the connecting plate onto the temporary pier, thereby improving the firmness of the connection between the jacking equipment body and the temporary pier. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the bridge pushing device in the embodiment of the utility model;

[0020] Figure 2 It is an enlarged schematic diagram after the section view of the local A;

[0021] Figure 3 is a structural schematic diagram of a connecting piece;

[0022] In the figure, 1. temporary pier; 2. main body of the jacking equipment; 3. embedded parts; 4. connecting plate; 5. connecting parts; 6. bottom tube; 7. side tube; 8. connecting rod; 9. slot; 10. connecting rod; 11. nut; 12. anti-rotation platform; 13. step hole; 14. elastic part. DETAILED DESCRIPTION

[0023] The following will be combined with the embodiments to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-Figure 3, the utility model provides a technical solution:

[0025] Example:

[0026] like Figure 1-Figure 3 As shown, a bridge pushing device comprises a pushing device body 2 arranged on a temporary pier 1,

[0027] The temporary pier 1 is provided with an embedded part 3, and the embedded part 3 forms a plug-in hole;

[0028] A connecting plate 4 is fixedly provided at the bottom (welded) of the jacking device, and the connecting plate 4 is connected to the temporary pier 1 through a connecting piece 5 and a plug-in hole. A T-shaped step hole 13 is provided on the connecting plate 4.

[0029] The embedded part 3 includes a bottom tube 6 and side tubes 7 symmetrically arranged on both sides of the bottom tube 6. A clamping rod 8 for preventing the connection part 5 from withdrawing is arranged inside the side tube 7. The clamping rod 8 is connected to the side tube 7 through an elastic member 14 (the elastic member 14 is a spring).

[0030] The connecting member 5 comprises a T-shaped structure, and a clamping groove 9 adapted to the clamping rod 8 is provided in the middle of the connecting member 5 .

[0031] The connecting member 5 includes a connecting rod 10 , and a nut 11 is threadedly connected to the top end of the connecting rod 10 .

[0032] 1. The embedded part 3 can also be a threaded sleeve, and the connecting part 5 can be a bolt. 2. To improve stability, connecting parts are respectively arranged on opposite sides of the connecting plate to connect with the corresponding embedded parts in the temporary pier (ie, four embedded parts and four connecting parts).

[0033] Working principle: The temporary pier 1 is cast and pre-buried during casting, so that the two side tubes 7 are in a horizontal state, the bottom tube 6 is in a vertical state, and the side tube 7 is located 5cm-20cm below the cement layer. During casting, a column protruding from the surface of the cement layer is inserted into the bottom tube 6 and taken out after casting is completed, at which time the plug hole is automatically formed.

[0034] The bridge jacking device body 2 is hoisted onto the temporary pier 1, and the hook can be separated from the jacking device body 2 after a general action. After separation, the jacking device body 2 is manually moved and fine-tuned to make the adjustment hole and the plug hole coaxial, and then the jacking device can be fixed.

[0035] When fixing, the connecting piece 5 can be directly inserted into the plug-in hole through the step hole 13, and when the connecting rod 10 enters the plug-in hole and contacts the clamping rod 8, the clamping rod 8 is pushed back to the side tube 7 and continues to move downward. When the connecting rod 10 continues to move downward until the clamping groove 9 corresponds to the clamping rod 8, the clamping rod 8 extends from the side tube 7 into the clamping groove 9. At this time, the connecting plate 4 is fixed to the temporary pier 1 through the connecting piece 5 and the clamping rod 8.

[0036] When it is necessary to dismantle, firstly, the nut 11 is screwed off the connecting rod 10 by a socket wrench, and then the jacking device body 2 can be lifted from above. The embedded parts 3 can be recycled after the temporary pier 1 is dismantled.

[0037] Furthermore, the bottom tube 6 and the side tube 7 are an integrated structure. The bottom tube 6 and the side tube 7 are made of stainless steel. With such arrangement, the embedded part 3 has high strength and is easy to recycle.

[0038] Furthermore, if Figure 3 As shown, the bottom end of the connecting rod 10 is a truncated cone structure. This arrangement facilitates the guiding of the connecting rod 10 when the connecting rod 10 is inserted.

[0039] Furthermore, Figure 2 and Figure 3 As shown, an anti-rotation platform 12 is provided between the bottom end of the connecting rod 10 and the slot 9, the inner hole of the bottom cylinder 6 is a rectangular hole, and the anti-rotation platform 12 extends into the bottom cylinder 6 and is adapted to the inner hole of the bottom cylinder 6 (here the anti-rotation platform 12 is a cuboid structure with a rectangular cross-section).

[0040] When the connector 5 is inserted into the plug hole and there is still a gap between the bottom of the slot 9 and the connecting rod 8, the gap can be eliminated by screwing the nut 11, thereby ensuring that the nut 11 presses the connecting plate 4 onto the temporary pier 1, thereby improving the firmness of the connection between the jacking equipment body 2 and the temporary pier 1.

[0041] Specifically: the nut 11 is rotated by a socket wrench, and the depth of the socket wrench is just the thickness of the nut 11. After the socket wrench is pressed against the bottom of the stepped hole 13 (the hole with a large diameter), the nut 11 is rotated. At this time, the nut 11 can only rotate but not move linearly due to the limitation of the socket wrench and the bottom of the stepped hole 13, and the connecting rod 10 cannot rotate due to the action of the anti-rotation platform 12 of the rectangular structure and the inner hole of the bottom tube 6. Therefore, when the nut 11 rotates, the connecting rod 10 can only move linearly along the axial direction. At this time, the connecting rod 10 rises relative to the bottom tube 6, thereby reducing the distance between the bottom surface of the slot 9 and the bottom surface of the nut 11, and the nut 11 is pressed against the bottom of the stepped hole 13.

[0042] The above is only a preferred embodiment of the utility model. It should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A bridge pushing device, comprising a pushing device body arranged on a temporary pier, characterized in that: The temporary pier is provided with embedded parts, and the embedded parts form plug-in holes; A connecting plate is fixedly provided at the bottom of the jacking device, and the connecting plate is connected to the temporary pier through a connecting piece and a plug hole.

2. The bridge pushing device according to claim 1, characterized in that: The embedded part includes a bottom tube and side tubes symmetrically arranged on both sides of the bottom tube, wherein a clamping rod for preventing the connection part from withdrawing is arranged in the side tube, and the clamping rod is connected to the side tube through an elastic member; The connecting piece comprises a T-shaped structure, and a clamping groove adapted to the clamping rod is provided in the middle of the connecting piece.

3. The bridge pushing device according to claim 2 is characterized in that: The connecting piece comprises a connecting rod, and a nut is threadedly connected to the top end of the connecting rod.

4. The bridge pushing device according to claim 3 is characterized in that: The bottom tube and the side tube are an integrated structure.

5. The bridge pushing device according to claim 4 is characterized in that: The bottom tube and the side tube are made of stainless steel.

6. The bridge pushing device according to claim 3, characterized in that: The bottom end of the connecting rod is a truncated cone structure.

7. The bridge pushing device according to claim 6, characterized in that: An anti-rotation platform is provided between the bottom end of the connecting rod and the clamping groove, the inner hole of the bottom cylinder is a rectangular hole, and the anti-rotation platform extends into the bottom cylinder and is matched with the inner hole of the bottom cylinder.

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