Steel box girder low clearance tractor translation installation device

Abstract

The utility model discloses a kind of steel box girder low clearance towed translation installation devices, comprising: two first piers of symmetrical distribution, the side wall of two the first piers is uniformly connected with multiple I-shaped frames of uniform distribution, the outside of multiple the I-shaped frames is commonly fixedly connected with multiple guide rails, the upper end of multiple the guide rails is fixedly connected with four fluorine plate, the upper end of multiple the four fluorine plate is slidably connected with steel box girder body, the utility model is provided with I-shaped frame and guide rail etc. component, steel box girder body can be according to construction planning, steadily, accurately translation to the position of pre-setting along guide rail section by section, after all segmented steel box girder body is in position, it is firmly connected into complete whole by welding process again, finally form stable and reliable bridge structure, this process is not only easy and efficient to operate, and maximum reduce the disturbance of construction to original bridge, effectively guarantee the structural safety and stability of original bridge.

Description

Technical Field

[0001] This utility model relates to the technical field of steel box girder installation devices, specifically a low-clearance dragging and horizontal moving installation device for steel box girders. Background Technology

[0002] Land resources along urban rivers are scarce. Idle spaces under existing bridges (such as between bridge piers and under bridge spans) are being revitalized. Scattered fitness trails are being connected by steel structure landscape bridges to form a continuous waterfront pedestrian system, solving the problem of "dead-end roads" while avoiding the occupation of additional shoreline or river space. This aligns with the concepts of "sponge city" and "compact city".

[0003] When using existing devices, additional loads are generated on the temporary lifting points for the bottom reinforcement construction of the beam and on the original bridge. If the lifting load is eccentric (such as the component tilting) or the load borne by a single plate is too large, additional bending moments will be generated on the old bridge slab. After being superimposed on the original dead load (slab self-weight, bridge deck pavement), it is easy to exceed the bending bearing capacity of the slab section, resulting in cracking in the tension zone at the bottom of the mid-span. Therefore, we need to propose a low-clearance dragging and translation installation device for steel box girders. Utility Model Content

[0004] The purpose of this utility model is to provide a low-clearance dragging and translation installation device for steel box girders. By setting up components such as I-beams and guide rails, there is no need to set up temporary lifting points at the bottom of the beam. After the steel box girder body is translated to the design position segment by segment, it is welded into a whole to form an integral bridge, thereby reducing the impact on the original bridge and solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A low-clearance dragging and translating installation device for steel box girders includes: Two symmetrically distributed first piers are provided. Multiple I-beams are fixedly connected to the side walls of the two first piers. Multiple guide rails are fixedly connected to the outer sides of the multiple I-beams. A PTFE plate is fixedly connected to the upper end of the multiple guide rails. A steel box girder body is slidably connected to the upper end of the multiple PTFE plates. A moving component for moving the steel box girder body is provided at the upper end of the multiple PTFE plates.

[0006] Preferably, the mobile assembly includes a fixed frame, a hanging plate, and a manual hoist; Each of the multiple PTFE plates has a detachable fixing frame at its upper end. Each of the multiple fixing frames has a hanging plate fixedly connected inside. Each of the multiple hanging plates has a manual hoist inside. The output rope ends of the multiple manual hoists are in contact with the two steel box girder bodies respectively.

[0007] Preferably, each of the I-beams has a support surface at its lower end, and each of the two support surfaces is fixedly connected to a plurality of evenly distributed support columns.

[0008] Preferably, the upper ends of the plurality of support columns are fixedly connected to walkways.

[0009] Preferably, the lower ends of the plurality of I-beams are all fixedly connected to connecting frames, and the lower ends of the plurality of connecting frames are all fixedly connected to second piers.

[0010] Preferably, the upper ends of the two first piers and the second pier are jointly provided with the bridge body.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This utility model, by incorporating components such as I-beams and guide rails, allows the steel box girder body to be smoothly and precisely moved segment by segment along the guide rails to a pre-set position according to the construction plan. After all segments of the steel box girder body are in place, they are then firmly connected into a complete whole through welding, ultimately forming a stable and reliable bridge structure. This process is not only simple and efficient to operate, but also minimizes the disturbance to the original bridge during construction, effectively ensuring the structural safety and stability of the original bridge. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the installation steel structure of this utility model; Figure 2 This is a schematic diagram of the sliding structure of the steel box girder body of this utility model; Figure 3 The structure of this utility model Figure 2 Enlarged view of a portion of point A in the middle; Figure 4 This is a schematic diagram of the completed installation of the steel box girder body of this utility model; Figure 5 This is a schematic diagram of the overall structure of the device after installation.

[0013] In the diagram: 1. First pier; 2. I-beam; 3. Connecting frame; 4. Second pier; 5. Water surface; 6. Support surface; 7. Support column; 8. Walkway; 9. Guide rail; 10. PTFE plate; 11. Moving component; 111. Fixed frame; 112. Hanging plate; 113. Manual hoist; 12. Steel box girder body; 13. Bridge body. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figures 1-5 This utility model provides a technical solution: A low-clearance dragging and translating installation device for steel box girders includes: Two symmetrically distributed first piers 1 are provided. Multiple I-beams 2 are fixedly connected to the side walls of the two first piers 1. Multiple guide rails 9 are fixedly connected to the outer sides of the multiple I-beams 2. PTFE plates 10 are fixedly connected to the upper ends of the multiple guide rails 9. A steel box girder body 12 is slidably connected to the upper ends of the multiple PTFE plates 10. A moving component 11 for moving the steel box girder body 12 is provided at the upper ends of the multiple PTFE plates 10.

[0016] For example, the two first piers 1 serve as the basic support structure of the entire installation device, standing firmly on the ground. The I-beams 2 not only enhance the lateral stability of the piers, but also provide reliable connection points for the subsequent installation of the guide rails. The guide rails 9 are made of high-strength materials to ensure that they will not deform when bearing the weight of the steel box girder. The PTFE plate 10 has an extremely low coefficient of friction, which can significantly reduce the resistance of the steel box girder body 12 during the translation process. As the main load-bearing structure of the bridge, the smooth and accurate translation of the steel box girder body 12 is the key to successful installation. The moving component 11 can precisely control the moving speed and direction of the steel box girder.

[0017] The mobile assembly 11 includes a fixed frame 111, a hanging plate 112, and a manual hoist 113; Each of the multiple PTFE plates 10 has a detachable fixing frame 111 at its upper end. Each of the multiple fixing frames 111 has a hanging plate 112 fixedly connected inside. Each of the multiple hanging plates 112 has a manual hoist 113 inside. The output rope ends of the multiple manual hoists 113 are in contact with the two steel box girder bodies 12 respectively.

[0018] For example, the fixing frame 111 adopts a modular design, which facilitates quick installation and disassembly to adapt to the translation requirements of steel box girder bodies 12 of different lengths. The hanging plate 112 serves as the suspension point of the manual hoist 113. Its material and connection method have been strictly calculated and tested to ensure that it will not break or fall off when bearing the weight of the manual hoist 113 and the steel box girder body 12. As a lightweight and flexible lifting tool, the manual hoist 113 can achieve slow and smooth movement of the steel box girder through manual operation. By adjusting the rope length and tension of the manual hoist 113, the moving distance and speed of the steel box girder body 12 can be precisely controlled. In actual operation, the steel box girder body 12 adopts a segmented sliding method. The first segment is pulled once by the manual hoist to ensure that the steel box girder can start smoothly and enter the translation track. The last segment is pulled a second time by the winch to provide sufficient power to completely translate the steel box girder body 12 to the predetermined position.

[0019] Each of the multiple I-beams 2 has a support surface 6 at its lower end. Each of the two support surfaces 6 is fixedly connected to a plurality of evenly distributed support columns 7 at its lower end. The upper ends of the plurality of support columns 7 are fixedly connected to a walkway 8.

[0020] For example, the support surface 6 serves as a transition structure between the I-beam 2 and the water surface 5, providing a walking area for operators when installing components such as the I-beam 2. The support surface 6 is located at the upper end of the water surface 5, and its material and construction are specially designed to adapt to the fluctuations and erosion of the water surface. The support column 7 extends into the water, providing a solid support foundation for the entire installation device. The walkway 8 serves as a passage for operators, and its width and load-bearing capacity meet the safety specifications, ensuring that operators can move safely and conveniently when performing translational installation tasks.

[0021] The lower ends of multiple I-beams 2 are all fixedly connected to connecting frames 3, and the lower ends of multiple connecting frames 3 are all fixedly connected to second piers 4.

[0022] For example, the connecting frame 3 serves as the connecting component between the I-beam 2 and the second pier 4. Its design and installation have undergone rigorous calculation and testing. The connecting frame 3 is made of high-strength steel, which can withstand the enormous force transmitted from the I-beam 2 and stably transfer it to the second pier 4. The second pier 4 serves as an auxiliary support structure for the entire installation device, and together with the first pier 1, it forms a stable support system. The design and construction of the second pier 4 comply with the relevant specifications for bridge engineering, ensuring stability and safety when bearing the weight of the steel box girder and external loads.

[0023] The upper ends of the two first piers 1 and the second pier 4 are jointly provided with the bridge body 13.

[0024] For example, the bridge body 13, as the main structure of the entire bridge project, is designed and constructed with careful planning and strict implementation. The bridge body 13 has sufficient strength and durability to withstand the loads of vehicles and pedestrians as well as the erosion of the natural environment.

[0025] Working principle: Multiple support columns 7 are installed underwater, support surfaces 6 are installed on the upper part of some support columns 7, and walkways 8 that meet safety standards are built on the upper part of other support columns 7 to facilitate the passage of operators; Multiple I-beams 2 are evenly fixed to the side wall of the first pier 1 to enhance lateral stability and provide connection points for the installation of guide rails 9. The I-beams 2 are then firmly connected to the second pier 4 through the connecting frame 3. The second pier 4 serves as an auxiliary support and together with the first pier 1, forms a stable support system. Then, multiple guide rails 9 made of high-strength materials are fixed to the outside of the multiple I-beams 2. A PTFE plate 10 with an extremely low coefficient of friction is fixed to the upper end of the guide rails 9 to reduce the translational resistance of the steel box girder. A detachable modular fixing frame 111 is installed on the upper end of the PTFE plate 10 to adapt to the translation requirements of steel box girder body 12 of different lengths. A hanging plate 112 is fixed inside the fixing frame 111. The hanging plate 112 serves as the suspension point of the manual hoist 113. The manual hoist 113 is installed inside the hanging plate 112, and its output rope end is connected to the steel box girder body 12. The first segment of the steel box girder body 12 is pulled once by a hand-operated hoist, so that the steel box girder body 12 can be started smoothly and enter the translation track. During the translation process, the moving distance and speed of the steel box girder body 12 are precisely controlled by adjusting the rope length and tension of the hand hoist 113. The last segment is pulled a second time by a winch, providing sufficient power to completely translate it to the predetermined position. After the steel box girder body 12 is moved into place, multiple steel box girder bodies 12 and walkways 8 are welded together, and the I-beam 2, connecting frame 3, support surface 6 and support column 7 at the lower end of support surface 6 are dismantled to complete the entire bridge project.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A low-clearance dragging and translating installation device for steel box girders, characterized in that, include: Two symmetrically distributed first piers (1) are provided. Multiple I-beams (2) are fixedly connected to the side walls of the two first piers (1). Multiple guide rails (9) are fixedly connected to the outer sides of the multiple I-beams (2). A PTFE plate (10) is fixedly connected to the upper end of the multiple guide rails (9). A steel box girder body (12) is slidably connected to the upper end of the multiple PTFE plates (10). A moving component (11) for moving the steel box girder body (12) is provided at the upper end of the multiple PTFE plates (10).

2. The steel box girder low-clearance dragging and translation installation device according to claim 1, characterized in that: The moving component (11) includes a fixed frame (111), a hanging plate (112), and a manual hoist (113). Each of the multiple PTFE plates (10) is provided with a detachable fixing frame (111) at its upper end. Each of the multiple fixing frames (111) is fixedly connected with a hanging plate (112). Each of the multiple hanging plates (112) is provided with a manual hoist (113). The output rope ends of the multiple manual hoists (113) are respectively in contact with the two steel box girder bodies (12).

3. The steel box girder low-clearance dragging and translation installation device according to claim 1, characterized in that: Each of the I-beams (2) has a support surface (6) at its lower end, and each of the two support surfaces (6) is fixedly connected to a plurality of evenly distributed support columns (7).

4. The steel box girder low-clearance dragging and translation installation device according to claim 3, characterized in that: The upper ends of several of the support columns (7) are fixedly connected to walkways (8).

5. The steel box girder low-clearance dragging and translation installation device according to claim 3, characterized in that: Each of the I-beams (2) is fixedly connected to a connecting frame (3), and each of the connecting frames (3) is fixedly connected to a second pier (4).

6. The steel box girder low-clearance dragging and translation installation device according to claim 1, characterized in that: The upper ends of the two first piers (1) and the second pier (4) are jointly provided with a bridge body (13).

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