Rotary support for pushing curved steel box girder and matched movable support
By designing rotary brackets and mobile brackets, the problem of flexibility and adjustment accuracy of the bracket system during the over-push construction of curved steel box girder is solved, and stability and safety during the construction process are achieved, operation is simplified, and cost and noise interference are reduced. , improve construction efficiency and quality.
Patent Information
- Application Number
- CN202411514147.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-28
- Publication Date
- 2024-12-27
AI Technical Summary
The prior art is difficult to meet the flexibility and adjustment accuracy of the bracket system during the over-push construction of curved steel box girders, especially when the rear end of the steel box girder is suspended, and the layout and disassembly of fixed brackets take a long time, and the cost is high and low efficiency is low. .
A rotating bracket and a moving bracket are designed. The rotating bracket is adjusted angle through the adjustment module and the rotating module. The mobile bracket is quickly moved and fixed through the electric H-type leg system and tires, ensuring stability and safety during construction.
It improves construction adaptability and accuracy, simplifies construction operations, reduces cost and noise interference, enhances construction safety and efficiency, reduces the impact on the environment, and achieves high-quality construction results.
Smart Images
Figure CN119195011A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of bridge jacking construction, in particular to a bracket system for jacking a curved steel box girder and a matching mobile bracket. Background Art
[0002] As a mature construction method, bridge jacking construction technology is widely used in the construction of large-span bridges. This technology can realize the construction of bridges across obstacles such as rivers and roads without interrupting traffic. Jacking construction technology is particularly suitable for urban bridge construction because it can be carried out in a limited space and reduce the impact on the surrounding environment.
[0003] Curved steel box girders face more technical challenges in top-pushing construction due to their structural complexity. The curved shape requires the support system to be able to adapt to the continuously changing linear shape of the beam while ensuring the stability and accuracy of the beam. The support systems of the prior art usually lack sufficient flexibility and adjustment accuracy, and it is difficult to meet the specific needs of curved steel box girder construction. Especially in the top-pushing construction of curved steel box girders, when the support adjusts the angle to adapt to the curve changes, the rear end of the steel box girder may be suspended, which requires the support system to not only have good lateral and longitudinal adjustment capabilities, but also to be able to respond quickly and provide stable support.
[0004] Conventional fixed supports show limitations in this case because they cannot adapt to the support requirements when the rear end of the steel box girder is suspended. In addition, the arrangement and disassembly of fixed supports are time-consuming, costly and inefficient. In order to overcome these limitations, the present invention proposes a new type of rotating support, which can not only adapt to various working conditions in the jacking construction of curved steel box girders, but also has an automatic adjustment function to achieve seamless switching between straight jacking and curved steering, thereby improving construction efficiency and safety. At the same time, the present invention also provides a mobile support to solve the support problem when the rear end of the steel box girder is suspended. Summary of the invention
[0005] The present invention overcomes the shortcomings of the prior art and aims to solve the following technical problems: designing a new type of rotating bracket for jacking curved steel box girders and a movable bracket for jacking curved beams, and adjusting the angle of the rotating bracket to adapt to various working conditions in the jacking construction of curved steel box girders. In combination with the use of a movable bracket, the bracket can be moved as needed to solve the problem of rear end suspended support in the jacking construction of curved steel box girders. The jacking bracket can also be used as a hoisting bracket to achieve rapid arrangement and movement of the bracket, simplify the jacking route of curved steel box girder bridges, and more effectively solve the problem of overload in jacking curved beams, especially curved beams with large curvature, so as to improve construction efficiency and safety.
[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: designing a new type of rotating bracket for jacking curved steel box girders and a bracket for jacking curved beams to solve the problems of angle adjustment and rear end suspended support in the jacking construction of curved steel box girders.
[0007] The specific technical solutions are as follows:
[0008] 1. Rotating bracket design:
[0009] Crawler load-bearing module: used to install the crawler, equipped with a limit device to prevent the crawler from sliding or tipping over under load.
[0010] Adjustment module: It includes rotating parts, meshing parts, elastic parts and locking parts. Through the tooth structure, the position of the walker can be fine-tuned to adapt to different curve shapes.
[0011] Rotation module: allows the bracket to rotate around the central axis to achieve large angle adjustment to meet the needs of curved pushing.
[0012] Support module: provides firm support for the entire rotating bracket to ensure stability during the pushing process.
[0013] 2. Mobile bracket:
[0014] Movable support: When the rear end of the steel box girder is suspended in the air, tires are used to move the support to adapt to different position requirements during the jacking process.
[0015] Electric H-type outrigger system: includes horizontal outriggers and vertical outriggers, used to fix the mobile support to ensure stability during construction.
[0016] Level: used to determine whether the support is stable and ensure construction safety.
[0017] Compared with the prior art, the present invention has the following beneficial effects: the present invention provides a rotating bracket and a mobile bracket for jacking a curved steel box girder, which can improve the construction adaptability: the rotating bracket can adapt to both straight and curved working conditions, and realize seamless switching between straight jacking and curved steering. The design of the mobile bracket allows for quick adjustment and repositioning to adapt to dynamic changes during the construction process; enhance construction accuracy: the fine-tuning function of the rotating bracket ensures the stability and accuracy of the steel box girder during the jacking process. The H-type leg system and level gauge of the mobile bracket ensure the stability of the bracket and prevent instability caused by eccentric loading; improve construction safety: the limit device and locking mechanism reduce the risk of sliding or overturning of the crawler under load. The electric H-type leg system of the mobile bracket provides solid support and enhances safety during the construction process; simplify construction operations: the rotating bracket is easy to operate and easy to install and disassemble. The tire structure of the mobile bracket allows the bracket to be easily moved to the desired position, simplifying construction operations; reduce construction costs: the design of the rotating bracket and the mobile bracket reduces time and labor costs in construction. The multi-purpose use of one mobile bracket reduces the total number of brackets and reduces material costs; improves construction efficiency: the automated control system of the rotating bracket can realize automatic adjustment of the bracket, reducing the complexity of manual operation. The rapid deployment and mobility of the mobile bracket speeds up the construction progress; reduces the impact on the environment: the top-pushing construction work surface is small, reducing interference with the surrounding environment. Noise and interference during the construction process are effectively controlled. Improve construction quality: factory production and on-site assembly ensure the high quality of components. The precise adjustment capabilities of the rotating bracket and the mobile bracket help to achieve high-quality construction results; enhance site adaptability: the H-shaped legs of the mobile bracket can adapt to different terrains and site conditions, including slopes and irregular sites. In summary, the present invention, through the design of the rotating bracket and the mobile bracket, provides an efficient, safe and economical curved steel box girder top-pushing construction solution, which has significant practical value and broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 A structural diagram of the lower part of a movable bracket provided in an embodiment of the present invention;
[0019] Figure 2 for Figure 1 Front view of the substructure during movement;
[0020] Figure 3 for Figure 1 Front view of the substructure after fixation;
[0021] Figure 4 for Figure 1 Schematic diagram of horizontal instrument panel;
[0022] Figure 5A rotating bracket for jacking a curved steel box girder provided in an embodiment of the present invention;
[0023] Figure 6 is the initial working state of the embodiment of the present invention;
[0024] Figure 7 This is the working effect of the embodiment of the present invention.
[0025] The accompanying drawings are marked as follows: Figure 1-4 The figure is the structural diagram of the movable bracket. 1 is the bracket steel pipe, 2 is the horizontal leg, 3 is the vertical leg, 4 is the leg plate, 5 is the level, 6 is the tire, and 7 is the bubble. Figure 5 Figure 8 is a diagram of the structure of the rotating bracket. Figure 8 is a walking machine bearing module, Figure 9 is an adjustment module, Figure 10 is a rotating module, and Figure 11 is a supporting module. Figure 6 and Figure 7 The working state and effect of the embodiment are shown in FIG. 12 , which is a movable bracket, 13 is a curved beam, and 14 is a rotating bracket. DETAILED DESCRIPTION
[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.
[0027] like Figure 1 As shown, the embodiment of the present invention provides a movable support with simple structure, flexible operation and adaptability to different construction sites, including a tire 6 structure located at the lower end of the support steel pipe 1 and an electric H-type outrigger system for fixing the support. The H-type outrigger system includes four H-type outriggers located at a certain distance from the lower end of the support steel pipe 1, and each H-type outrigger includes a horizontal outrigger 2, a vertical outrigger 3, an outrigger plate 4, and a level 5.
[0028] Furthermore, if Figure 2 As shown, according to the need for jacking, during the process of moving the bracket to the specified position, the horizontal legs 2 and the vertical legs 3 of the legs are in a retracted state, and the position movement of the bracket is achieved through the tires 6. In this embodiment, all the horizontal legs 2 and the vertical legs 3 of the operating leg system are in a retracted state, so that the bracket is in a movable state, and the bracket is moved by the tires 6, and the bracket is moved to the specified position along the jacking direction before construction.
[0029] Furthermore, if Figure 3As shown, wait for the bracket to move to the specified position, solve the problem of unbalanced load by fine-tuning the tires, and then fix the bracket. Extend the horizontal legs 2 in sequence. When fixing, the extension length of the horizontal legs 2 is determined by referring to the actual conditions such as the construction terrain. Then extend the vertical legs 3 in sequence so that the leg discs 4 are close to the ground to ensure the stability of the legs. The fixation is completed after judging that the legs are stable through the level 5. In this embodiment, the extension length of the horizontal legs 2 is referred to the construction conditions. The horizontal legs are extended as much as possible. The vertical legs 3 are extended until the leg discs 4 are close to the ground so that the legs are stressed. When leveling the legs, observe the horizontal instrument panel 5 and observe that the bubble 7 is in the center of the dial. Figure 5 As shown, at this time the legs are stable and fixed.
[0030] Furthermore, if Figure 2 As shown, after the construction is completed, the vertical legs 3 are retracted in sequence, and then the horizontal legs 2 are retracted in sequence, and the bracket is moved to the next designated position by the tires 6 until the steel box girder is pushed into place. After the pushing operation is completed, the bracket is moved to the lifting routes on both sides by the tires 6. In this embodiment, by moving the bracket, the time for installing and removing the bracket is saved, and one bracket can be used as a pushing bracket and a lifting bracket by moving the position, thereby improving engineering efficiency and reducing costs.
[0031] Furthermore, if Figure 3 As shown, when the bracket is moved to the designated position of the lifting route, the leg system is adjusted to fix it, and the level 5 is used to determine whether it is stable, and it is used as a lifting bracket. After the construction here is completed, the bracket is adjusted to appear again. Figure 3 In the moving state shown, the bracket is moved to the next designated position by the tire 6 until the lifting operation is completed.
[0032] like Figure 5 As shown, an embodiment of the present invention provides a rotating bracket for jacking of curved steel box girders, which can provide many benefits in jacking construction projects, including increasing construction adaptability, enhancing construction accuracy, simplifying construction operations, reducing costs, improving construction efficiency, etc., including a crawler bearing module 7, an adjustment module 8, a rotating module 9, and a support module 10; the crawler bearing module 7 is on the upper part of the adjustment module 8; the rotating module 9 is located between the adjustment module 8 and the support module 10.
[0033] like Figure 6 FIG. 1 shows an initial state in which the curved beam 13 is mounted on the movable bracket 12 and the rotating bracket 14 .
[0034] like Figure 7 As shown, the curved beam 13 adjusts the angle by rotating the bracket 14 and pushes the movable bracket 12 to the specified position, and then completes the pushing task of this step.
[0035] The working principle and working process of the present invention are as follows:
[0036] Working principle of the rotating bracket: Thrust transmission: The walker is installed on the guide rail walker bearing module 7, and the force transmission and thrust application are realized through the guide rail. Angle adjustment: The adjustment module 8 allows the position and angle of the walker to be fine-tuned to adapt to the curvature and direction of the bridge curve. Rotational movement: The rotating module 9 enables the bracket to rotate around the fixed base to achieve steering adjustment during the curve jacking process. Stability guarantee: The support module 10 provides stable support for the entire jacking system to ensure that the bracket will not be displaced or overturned under the action of the jacking force.
[0037] Working principle of the mobile support: Mobility: The mobile support is equipped with tires 6, which enable it to move on the pier according to construction needs. Support fixation: The electric H-type support leg system includes horizontal support legs 2 and vertical support legs 3, which are used to fix the mobile support to ensure stability during jacking or lifting. Level detection: The level meter 5 is used to detect whether the support is in a horizontal state to ensure the safety and accuracy of construction.
[0038] Working process: Construction preparation: Before the top-pushing construction, determine the layout of the top-pushing path and the bracket according to the bridge design drawings and site conditions. Bracket installation: Install the rotating bracket 12 at the predetermined position to ensure that its rotation center is aligned with the top-pushing path. Top-pushing start: Start the crawler and apply the top-pushing force through the crawler bearing module 7 to start the top-pushing of the curved beam 13. Curve adaptation: When the curved beam 13 enters the curved section, the position and angle of the crawler are fine-tuned through the adjustment module 8 to adapt to the curve changes. Steering adjustment: During the curve top-pushing process, the rotation angle of the bracket is adjusted through the rotating module 9 to ensure that the curved beam 13 moves smoothly along the predetermined curve. Rear end suspension processing: When the rear end of the curved beam 13 is suspended, move the mobile bracket 12 to the bottom of the suspension position and fix it with the electric H-type leg system. Top-pushing continues: With the assistance of the mobile bracket 12, continue to push the steel box girder until the rear end is connected to the front structure. Hoisting and closing: After the top-pushing section reaches the specified position, use welding or other connection processes to close the top-pushing section with the front splicing section. Circular construction: Repeat the above steps according to the length of the bridge and the construction progress until the entire bridge construction is completed.
[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. A rotating bracket for pushing a curved steel box girder, characterized in that: It includes a walking machine bearing module (8) for placing the walking machine; An adjustment module (9) connected to the walking machine bearing module (8) and used for fine-tuning the position of the walking machine; A rotating module (10) connected to the adjusting module (9) and used to realize the rotating movement of the bracket; The support module (11) is used to support the entire rotating support structure.
2. The rotary support for pushing a curved steel box girder according to claim 1, characterized in that: The walker bearing module (8) comprises a limiting device to prevent the walker from sliding or tipping over under load.
3. The rotary support for pushing a curved steel box girder according to claim 2, characterized in that: The adjustment module (9) comprises a rotating member, an engaging member, an elastic member and a locking member. The rotating member and the engaging member can engage with each other through a toothed structure, and the locking member can rotate to drive the rotating member and the engaging member to produce relative displacement, thereby achieving the purpose of fixing and fine-tuning the angle of the bracket.
4. The rotary support for pushing a curved steel box girder according to claim 3, characterized in that: The rotating module (10) comprises a rotating bearing and a locking mechanism for fixing the bracket during the pushing process.
5. The rotary support for pushing a curved steel box girder according to claim 4, characterized in that: The support module (11) comprises a plurality of adjustable support legs to adapt to bridge piers of different heights.
6. The rotating bracket for pushing a curved steel box girder according to claim 5, characterized in that: The rotary bearing of the rotary module (10) is of sealed design to prevent dust and moisture from entering.
7. A mobile bracket used in conjunction with the rotating bracket for pushing a curved steel box girder as claimed in any one of claims 1 to 6, characterized in that: It comprises a support steel pipe (1), a tire (6) structure located at the lower end thereof, and an electric H-shaped outrigger system for fixing the support; The H-shaped leg system comprises four H-shaped legs, which are located at a certain distance from the lower end of the support steel pipe (1), and each H-shaped leg comprises a horizontal leg (2), a vertical leg (3), a leg plate (4), and a level (5).
8. The mobile support for pushing a curved steel box girder according to claim 7, characterized in that: The tire (6) is located at the lower end of each steel pipe of the bracket, and the arrangement of the tire enables the bracket to be movable.
9. The mobile support for pushing a curved steel box girder according to claim 8, characterized in that: The electric H-shaped outrigger system for fixing the mobile support is composed of four H-shaped outriggers, which are respectively arranged on steel pipes at four corners. When fixing, the extension of the horizontal outrigger (2) refers to the actual construction terrain, and the vertical outrigger (3) is extended until the outrigger plate (4) is close to the ground. The position of the air bubble (7) is observed so that the outrigger is stressed while ensuring stability.
10. The mobile support for pushing a curved steel box girder according to claim 9, characterized in that: The level meter (5) is used to judge whether the support is stable. If the position of the bubble (7) stays at the center of the dial, the support is stable, thus ensuring construction safety.