Limiting device for bridge pushing

Abstract

The utility model discloses a limit device for bridge pushing, which comprises a mounting seat, a jack, a jacking limit plate and an angle adjusting mechanism, the jack is limited and fixed on the mounting seat, the jacking limit plate is connected with the jack, and the jack drives the jacking limit plate to move to limit the side surface of a steel structure bridge. The angle adjusting mechanism is connected between the jacking and pressing limiting plate and the jack, and the angle of the jacking and pressing limiting plate is adjusted through the angle adjusting mechanism. The limiting device is ingenious and reasonable in design and easy and convenient to use and operate, the two sides of a steel structure bridge in the pushing process are corrected and limited through the limiting device, the stability and safety in construction are improved, the construction quality is guaranteed, meanwhile, the jacking limiting plate is connected with the jack through the angle adjusting mechanism, and the construction efficiency is improved. And the inclination angle of the jacking limiting plate can be adaptively adjusted, so that the jacking limiting plate is adaptive to steel structure bridge side plates with different inclined surfaces, the deviation rectifying accuracy of the side surfaces of the steel structure bridge is ensured, and the application range of the device is expanded.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel structure bridge jacking, and in particular relates to a limiting device for bridge jacking. Background Art

[0002] Due to architectural requirements, surrounding buildings, terrain and other factors, most steel structure bridges are built in a curved shape. When the traditional jacking method is used to construct curved steel bridges, the piers are likely to obstruct the bridge. The jacking work of the curved steel bridge can only be achieved by relying on a small range of lateral correction by the jacking equipment, which results in the need for constant correction and adjustment during the jacking process, greatly reducing construction efficiency. Summary of the invention

[0003] The utility model aims to provide a technical solution for a limit device for bridge jacking in view of the deficiencies in the prior art. The structural design is ingenious and reasonable, and the operation is simple and convenient. The limit device can correct and limit the deviation of both sides of the steel structure bridge during the jacking process, thereby improving the stability and safety during construction and ensuring the construction quality. At the same time, the jacking limit plate is connected to the jack through an angle adjustment mechanism, so that the inclination angle of the jacking limit plate can be adaptively adjusted to adapt to the side plates of the steel structure bridge with different inclined surfaces, thereby ensuring the accuracy of the correction of the side of the steel structure bridge and expanding the scope of application of the device.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A limit device for bridge jacking includes a mounting seat, a jack, a top pressure limit plate and an angle adjustment mechanism. The jack limit is fixed on the mounting seat, the top pressure limit plate is connected to the jack, the jack drives the top pressure limit plate to move to limit the side of the steel structure bridge, and the angle adjustment mechanism is connected between the top pressure limit plate and the jack. The angle adjustment mechanism is used to adjust the angle of the top pressure limit plate. The structural design is ingenious and reasonable, and the operation is simple and convenient. The limit device is used to correct and limit the two sides of the steel structure bridge during the jacking process, thereby improving the stability and safety during construction and ensuring the construction quality. At the same time, the top pressure limit plate is connected to the jack through the angle adjustment mechanism, so that the inclination angle of the top pressure limit plate can be adaptively adjusted, thereby adapting to the side plates of the steel structure bridge with different inclined surfaces, ensuring the accuracy of correcting the side of the steel structure bridge, and expanding the scope of application of the device.

[0006] Furthermore, the angle adjustment mechanism includes a support plate and an elastic component. The support plate is fixedly connected to the jack. A plurality of elastic components are arranged on the support plate. The plurality of elastic components are symmetrically arranged in two groups, each group including at least two elastic components. The structural distribution is reasonable and ingenious. Multiple elastic components are divided into two groups, which are symmetrically arranged on the support plate. The change of different compression lengths of the upper and lower groups of elastic components can realize the adjustment of the lateral angle of the top pressure limit plate, so that the top pressure limit plate can be used for the correction and limitation of the side plates of steel structure bridges with different inclined surfaces, thereby ensuring the actual correction accuracy.

[0007] Furthermore, the elastic component includes an adjusting screw column and a compression spring part. The adjusting screw column is inserted into the support plate. The head of the adjusting screw column is movably hinged with the top pressure limit plate. A limiting nut is arranged at the tail of the adjusting screw column. The compression spring part is sleeved on the adjusting screw column, and the compression spring part is limited between the support plate and the head of the adjusting screw. The adjusting screw is limited to fall off from the support plate by the limiting nut, thereby ensuring the structural stability and reliability. The design is reasonable and the installation and disassembly are convenient. The head of the adjusting screw column and the top pressure limit plate are hinged, so that the inclination angle of the top pressure limit plate is adjustable, so that it can be applied to the side panels of steel structure bridges with different inclined surfaces, fully fit, and improve the scope of use of the device.

[0008] Furthermore, the compression spring component includes a limit piece 1, a compression spring and a limit piece 2. The limit piece 1, the compression spring and the limit piece 2 are all sleeved on the adjusting screw column. The two ends of the compression spring are respectively fixedly connected to the limit piece 1 and the limit piece 2. The compression spring is always in a compressed state. The limit piece 1 is limited by contact with the support plate, and the limit piece 2 is limited by contact with the head of the adjusting screw column. The two ends of the compression spring are respectively fixed to the limit piece 1 and the limit piece 2 to form an integral structure, which is then sleeved on the adjusting screw column as a whole. The design is reasonable and the installation and disassembly are convenient. The limit piece 1 and the limit piece 2 increase the contact area between the two ends of the compression spring component and the support plate and the head of the adjusting screw column, ensuring that the compression spring component is always limited between the support plate and the head of the adjusting screw column, ensuring the stability and reliability of the structure. The limit piece 1 and the limit piece 2 can play an auxiliary guiding role in the subsequent compression deformation of the compression spring, ensuring the stability and verticality of the compression spring during compression deformation.

[0009] Furthermore, the mounting base includes a vertical support plate, a limit plate 1 and a limit plate 2, the limit plate 1 and the limit plate 2 are respectively arranged on both sides of the vertical support plate, a slot is formed between the limit plate 1 and the limit plate 2, the vertical support plate is plugged and fixed in the slot, the jack is abutted and connected with the vertical support plate, the vertical support plate is plugged and limited in the slot formed between the limit plate 1 and the limit plate 2, the assembly is convenient, the vertical support plate facilitates the abutment installation and positioning of the rear end of the jack, the structural design is ingenious and reasonable, making the installation and disassembly of the jack more convenient.

[0010] Furthermore, a limit frame is arranged on the outside of the jack, and the jack is supplementarily limited and reinforced by the limit frame to improve the stability of the jack in position.

[0011] Furthermore, the limiting frame includes a positioning crossbeam, a positioning longitudinal beam and a limiting H-shaped steel. The positioning longitudinal beam is welded and fixed on the positioning crossbeam, the positioning longitudinal beam is supported and lifted on the bottom surface of the jack, the limiting H-shaped steel is symmetrically arranged on both sides of the positioning longitudinal beam, and the limiting H-shaped steel is limitedly supported on the corresponding sides of the jack. The positioning longitudinal beam reinforces and supports the jack from the bottom, and the limiting H-shaped steel limits and stabilizes the jack from both sides, effectively improving the structural stability and reliability of the jack after it is in place, effectively avoiding the displacement of the jack during the pushing process, effectively ensuring the correction accuracy, and ensuring the construction quality.

[0012] Furthermore, a stiffening rib is provided on the limiting H-shaped steel. The design of the stiffening rib can improve the structural strength of the limiting H-shaped steel, ensure that the limiting H-shaped steel is stable in limiting the side of the jack, and make the overall structure more solid and reliable.

[0013] The utility model has the following beneficial effects due to the adoption of the above technical solution:

[0014] The utility model has an ingenious and reasonable structural design, strong practicality, simple and convenient operation, and the limit device is used to correct and limit the two sides of the bridge during the jacking process, thereby improving the stability and safety during construction and ensuring the construction quality. At the same time, the top pressure limit plate is connected to the jack through an angle adjustment mechanism, so that the inclination angle of the top pressure limit plate can be adaptively adjusted to adapt to the side plates of steel structure bridges with different inclined surfaces, thereby ensuring the accuracy of the correction of the side surfaces of the steel structure bridge and expanding the scope of application of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings:

[0016] Figure 1 It is a schematic diagram of the installation structure of a bridge pushing limit device on a temporary support device according to the utility model;

[0017] Figure 2 This is a schematic structural diagram of a bridge pushing limit device according to the utility model;

[0018] Figure 3 It is a schematic diagram of the installation structure between the angle adjustment mechanism and the top pressure limit plate in the utility model;

[0019] Figure 4 It is a structural schematic diagram of the compression spring member in the utility model.

[0020] In the figure: 1-mounting seat; 2-jack; 3-top pressure limit plate; 4-angle adjustment mechanism; 5-support plate; 6-spring assembly; 7-adjusting screw column; 8-compression spring; 9-limiting nut; 10-limiting plate one; 11-compression spring; 12-limiting plate two; 13-vertical support plate; 14-limiting plate one; 15-limiting plate two; 16-temporary support device; 17-limiting frame; 18-positioned crossbeam; 19-positioned longitudinal beam; 20-limiting H-shaped steel; 21-stiffening rib plate. DETAILED DESCRIPTION

[0021] like Figures 1 to 4 As shown, the utility model is a limit device for bridge jacking, comprising a mounting seat 1, a jack 2, a top pressure limit plate 3 and an angle adjustment mechanism 4, wherein the jack 2 is fixed on the mounting seat 1, the top pressure limit plate 3 is connected to the jack 2, the jack 2 drives the top pressure limit plate 3 to move to limit the side of the steel structure bridge, and the angle adjustment mechanism 4 is connected between the top pressure limit plate 3 and the jack 2, and the angle adjustment mechanism 4 is used to adjust the angle of the top pressure limit plate 3. The structural design is ingenious and reasonable, and the operation is simple and convenient. The limit device is used to correct the deviation and limit the two sides of the steel structure bridge during the jacking process, thereby improving the stability and safety during construction and ensuring the construction quality. At the same time, the top pressure limit plate 3 is connected to the jack 2 through the angle adjustment mechanism 4, so that the inclination angle of the top pressure limit plate 3 can be adaptively adjusted, thereby adapting to the side plates of the steel structure bridge with different inclined surfaces, ensuring the accuracy of the correction of the side of the steel structure bridge, and expanding the scope of application of the device.

[0022] The angle adjustment mechanism 4 includes a support plate 5 and an elastic component 6. The support plate 5 is fixedly connected to the jack 2. A plurality of elastic components 6 are arranged on the support plate 5. The plurality of elastic components 6 are symmetrically arranged in two groups, each group including at least two elastic components 6. The structural distribution is reasonable and ingenious. Multiple elastic components 6 are evenly divided into two groups, which are symmetrically arranged on the support plate 5. The change of different compression lengths of the upper and lower groups of elastic components 6 can realize the adjustment of the lateral angle of the top pressure limit plate 3, so that the top pressure limit plate 3 can be suitable for the correction and limitation of the side plates of steel structure bridges with different inclined surfaces, thereby ensuring the actual correction accuracy.

[0023] The elastic component 6 includes an adjusting screw column 7 and a compression spring 8. The adjusting screw column 7 is inserted into the support plate 5. The head of the adjusting screw column 7 is movably hinged with the top pressure limit plate 3. A limiting nut 9 is arranged at the tail of the adjusting screw column 7. The compression spring 8 is sleeved on the adjusting screw column 7, and the compression spring 8 is limitedly arranged between the support plate 5 and the head of the adjusting screw. The limiting nut 9 is used to limit the adjusting screw from falling off the support plate 5, thereby ensuring the structural stability and reliability. The design is reasonable and the installation and disassembly are convenient. The head of the adjusting screw column 7 is hinged with the top pressure limit plate 3, so that the inclination angle of the top pressure limit plate 3 is adjustable, so that it can be applied to the side plates of steel structure bridges with different inclined surfaces, fully fit, and improve the scope of use of the device.

[0024] The compression spring member 8 includes a limit piece 10, a compression spring 11 and a limit piece 2 12. The limit piece 10, the compression spring 11 and the limit piece 2 12 are all sleeved on the adjusting screw column 7. The two ends of the compression spring 11 are respectively fixedly connected with the limit piece 10 and the limit piece 2 12. The compression spring 11 is always in a compressed state. The limit piece 10 is limited by contact with the support plate 5, and the limit piece 2 12 is limited by contact with the head of the adjusting screw column 7. The two ends of the compression spring 11 are respectively fixed with the limit piece 10 and the limit piece 2 12 to form an integral structure, and then the integral structure is It is sleeved on the adjusting screw column 7, has a reasonable design, and is easy to install and disassemble. The limit pieces 10 and 12 increase the contact area between the two ends of the compression spring 8 and the support plate 5 and the head of the adjusting screw column 7, ensuring that the compression spring 8 is always limited between the support plate 5 and the head of the adjusting screw column 7, ensuring the structural stability and reliability, and the limit pieces 10 and 12 can play an auxiliary guiding role in the subsequent compression deformation of the compression spring 11, ensuring the stability and verticality of the compression spring 11 during compression deformation.

[0025] The mounting seat 1 includes a vertical support plate 13, a limiting plate 1 14 and a limiting plate 2 15. The limiting plate 1 14 and the limiting plate 2 15 are respectively arranged on both sides of the vertical support plate 13. A slot (not shown in the figure) is formed between the limiting plate 1 14 and the limiting plate 2 15. The vertical support plate 13 is plugged and fixed in the slot. The jack 2 is connected with the vertical support plate 13 by abutment. The vertical support plate 13 is plugged and limited in the slot formed between the limiting plate 1 14 and the limiting plate 2 15. It is easy to assemble. The vertical support plate 13 facilitates the abutment installation and positioning of the rear end of the jack 2. It is plugged and limited, and does not need to be fixed by welding. The structural design is ingenious and reasonable, making the installation and disassembly of the jack 2 more convenient. The limiting plate 1 14 or the limiting plate 2 15 is not limited to a whole plate structure, and can be designed as a combination of multiple plates or an integral plate structure according to design requirements.

[0026] A limiting frame 17 is arranged outside the jack 2, and the limiting frame 17 is used to assist the limiting reinforcement of the jack 2, thereby improving the stability of the jack 2 in position. The limiting frame 17 includes a positioning cross beam 18, a positioning longitudinal beam 19, and a limiting H-shaped steel 20. The positioning longitudinal beam 19 is welded and fixed on the positioning cross beam 18, and the positioning longitudinal beam 19 is supported and lifted on the bottom surface of the jack 2. The limiting H-shaped steel 20 is symmetrically arranged on both sides of the positioning longitudinal beam 19, and the limiting H-shaped steel 20 is limited and supported on the corresponding side surfaces of the jack 2. The limiting H-shaped steel 20 is welded and fixed on the corresponding positioning cross beam 18. The positioning longitudinal beam 19 reinforces and supports the jack 2 from the bottom, and the limiting H-shaped steel 20 limits and stabilizes the jack 2 from both sides, effectively improving the structural stability and reliability of the jack 2 after it is in position, effectively avoiding the displacement of the jack 2 during the pushing process, effectively ensuring the correction accuracy, and ensuring the construction quality. The limiting H-shaped steel 20 is provided with a stiffening rib plate 21. The design of the stiffening rib plate 21 can improve the structural strength of the limiting H-shaped steel 20, ensure that the limiting H-shaped steel 20 is firmly limited to the side of the jack 2, and make the overall structure more solid and reliable. When the device is assembled and installed with the temporary support device, the limiting plate 14, the limiting plate 2 15, and the positioning beam 18 are directly fixed on the temporary support device.

[0027] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. A bridge pushing limit device, characterized in that include: Mounting seat; A jack, the jack being fixed on the mounting seat; A top pressure limit plate, wherein the top pressure limit plate is connected to the jack, and the jack drives the top pressure limit plate to move to limit the side of the steel structure bridge; An angle adjustment mechanism is connected between the top pressure limit plate and the jack, and the angle of the top pressure limit plate can be adjusted by the angle adjustment mechanism.

2. A bridge pushing limiter according to claim 1, characterized in that: The angle adjustment mechanism includes a support plate and an elastic component. The support plate is fixedly connected to the jack. A plurality of the elastic components are arranged on the support plate. The plurality of the elastic components are symmetrically arranged in two upper and lower groups, and each group includes at least two elastic components.

3. A bridge pushing limiter according to claim 2, characterized in that: The elastic component includes an adjusting screw column and a compression spring. The adjusting screw column is inserted into the support plate. The head of the adjusting screw column is movably hinged to the top pressure limit plate. A limiting nut is arranged at the tail of the adjusting screw column. The compression spring is sleeved on the adjusting screw column, and the compression spring is limitedly arranged between the support plate and the head of the adjusting screw.

4. A bridge pushing limiter according to claim 3, characterized in that: The compression spring component includes a limiting piece 1, a compression spring and a limiting piece 2. The limiting piece 1, the compression spring and the limiting piece 2 are all sleeved on the adjusting screw column. The two ends of the compression spring are respectively fixedly connected to the limiting piece 1 and the limiting piece 2. The compression spring is always in a compressed state. The limiting piece 1 is in contact with the support plate for limiting position, and the limiting piece 2 is in contact with the head of the adjusting screw column for limiting position.

5. The bridge pushing limiter according to claim 1 is characterized in that: The mounting seat includes a vertical support plate, a limiting plate 1 and a limiting plate 2, wherein the limiting plate 1 and the limiting plate 2 are respectively arranged on both sides of the vertical support plate, and a slot is formed between the limiting plate 1 and the limiting plate 2, and the vertical support plate is inserted and fixed in the slot, and the jack is in contact with the vertical support plate.

6. A bridge pushing limiter according to claim 1, characterized in that: A limiting frame is arranged outside the jack.

7. A bridge pushing limiter according to claim 6, characterized in that: The limiting frame includes a positioning cross beam, a positioning longitudinal beam and a limiting H-shaped steel. The positioning longitudinal beam is welded and fixed on the positioning cross beam. The positioning longitudinal beam is supported and lifted on the bottom surface of the jack. The limiting H-shaped steel is symmetrically arranged on both sides of the positioning longitudinal beam, and the limiting H-shaped steel is limitedly supported on the corresponding side surfaces of the jack.

8. A bridge pushing limiter according to claim 7, characterized in that: The limiting H-shaped steel is provided with a stiffening rib plate.

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