Transverse limiting device for curved steel box girder bridge

Abstract

The utility model discloses a transverse limiting device for a curved steel box girder bridge, and relates to the technical field of steel box girder bridges. Comprising a pier and a steel box girder bottom plate, the top of the pier is movably connected with an anchoring plate through bolts, a mounting cylinder is fixedly arranged at the top of the anchoring plate, a first threaded rod is movably arranged in the mounting cylinder, a threaded sleeve is movably arranged outside the first threaded rod, and a mounting plate is fixedly arranged at the top of the threaded sleeve; a rotating rod is rotatably arranged between the mounting plates, the surface of the rotating rod is fixedly connected with an electric telescopic rod, the telescopic end of the electric telescopic rod is fixedly connected with one side of a top block, a fixing plate is fixedly arranged on the surfaces of the mounting plates, and a second threaded rod is movably arranged in the fixing plate; and nut seats are movably arranged outside the two ends of the second threaded rod, connecting rods are fixedly arranged at the bottoms of the nut seats, and arc-shaped clamping plates are fixedly arranged at the other ends of the connecting rods.

Description

Technical Field

[0001] The utility model relates to the technical field of steel box girder bridges, and particularly relates to a transverse limiting device for a curved steel box girder bridge. Background Technique

[0002] A curved steel box girder bridge, as the name implies, is a bridge that adopts a steel box girder structure and whose bridge plane alignment presents a certain curved shape. More complex factors need to be considered in the design and construction of this kind of bridge, such as the precise control of the curved alignment, the analysis of structural forces, etc.

[0003] Chinese Utility Model Patent CN220827677U discloses a transverse limiting device for a curved steel box girder bridge, belonging to the technical field of steel box girder bridges. Specifically, it includes a steel box girder bottom plate and a bridge pier. A connecting steel pipe is fixed at the bottom of the steel box girder bottom plate. A first connecting steel plate is fixed at the bottom of the connecting steel pipe. A steel column pin is fixed at the bottom of the first connecting steel plate. A pre-buried steel pipe is pre-buried in the conical groove of the bridge pier. A second connecting steel plate is fixed at the bottom of the pre-buried steel pipe. The steel column pin is inserted into the pre-buried steel pipe. The structure of the utility model is simple and convenient to use, and can effectively prevent the bridge body from moving horizontally.

[0004] However, although the above device can effectively prevent the bridge body from moving horizontally, it is prone to rollover before the bridge body is permanently fixed, resulting in safety accidents and causing relatively large losses, which is not convenient for users. Content of the Utility Model

[0005] The utility model provides a transverse limiting device for a curved steel box girder bridge to solve the problems in the background technique.

[0006] To achieve the above object, the utility model provides the following technical solution: A transverse limiting device for a curved steel box girder bridge includes a bridge pier and a steel box girder bottom plate. The top of the bridge pier is movably connected with an anchor plate through bolts. An installation cylinder is fixedly arranged on the top of the anchor plate. A motor is fixedly arranged inside the installation cylinder. One end of the output shaft of the motor is fixedly connected with one end of a first threaded rod. A threaded sleeve is movably arranged outside the first threaded rod. An installation plate is fixedly arranged on the top of the threaded sleeve. A rotating rod is rotatably arranged between the installation plates. One end of the surface of the rotating rod is fixedly connected with one end of an electric telescopic rod. The telescopic end of the electric telescopic rod is fixedly connected with one side of a top block. A fixing plate is fixedly arranged on the surface of the installation plate. A second threaded rod is movably arranged inside the fixing plate. Nut seats are movably arranged outside both ends of the second threaded rod. A connecting rod is fixedly arranged at the bottom of the nut seat. The other end of the connecting rod is fixedly arranged with an arc-shaped clamping plate.

[0007] Furthermore, embedded steel pipes are fixedly arranged between the bridge piers, connecting steel bolts are movably arranged around and on the bottom wall of the embedded steel pipes, connecting steel pipes are fixedly arranged on the bottom of the steel box girder bottom plate, and steel column pins are fixedly arranged on the bottom of the connecting steel pipes.

[0008] Furthermore, the connection relationship between the first threaded rod and the threaded sleeve is a threaded connection, and a threaded hole matched with the first threaded rod is provided inside the threaded sleeve.

[0009] Furthermore, sliders are fixedly provided on both sides of the threaded sleeve, and sliding grooves adapted to the sliders are provided on both sides of the inner wall of the mounting tube, and the connection relationship between the sliders and the sliding grooves is a sliding connection.

[0010] Furthermore, an anti-slip pad is fixedly provided on the other side of the top block.

[0011] Furthermore, the connection relationship between the second threaded rod and the nut seat is a threaded connection, and a threaded hole matched with the second threaded rod is provided inside the nut seat.

[0012] Compared with the prior art, the utility model provides a lateral limit device for a curved steel box girder bridge, which has the following beneficial effects:

[0013] The lateral limit device of the curved steel box girder bridge is provided with an anti-rollover mechanism of the steel box girder bridge. The staff starts the motor to make its output shaft drive the first threaded rod to rotate, so that the threaded sleeve drives the mounting plate to perform vertical lifting movement and adjusts it to a suitable position. Then, the rotating rod is rotated to a suitable angle, and the second threaded rod is driven to rotate, so that the nut seat drives the connecting rod and the arc-shaped clamping plate to perform reverse horizontal movement, so that the rotating rod can be clamped and the rotating rod can be locked. Finally, the electric telescopic rod is started so that its telescopic end drives the top block to extend and retract, so that the two sides of the steel box girder can be supported, effectively preventing the steel box girder from rolling over, and the safety is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 This is a front view structural schematic diagram of the utility model;

[0016] Figure 3 This is a schematic diagram of the mounting plate structure of the utility model.

[0017] In the figure: 1. Pier; 101. Embedded steel pipe; 102. Connecting steel bolt; 2. Steel box girder bottom plate; 201. Connecting steel pipe; 202. Steel column pin; 3. Anchor plate; 4. Installation cylinder; 401. Motor; 402. First threaded rod; 403. Threaded sleeve; 404. Slide block; 405. Slide groove; 5. Installation plate; 501. Rotating rod; 502. Electric telescopic rod; 503. Top block; 6. Fixed plate; 601. Second threaded rod; 602. Nut seat; 603. Connecting rod; 604. Arc-shaped clamping plate. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a 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 those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] Please refer to Figures 1 - 3 A lateral limiting device for a curved steel box girder bridge is disclosed in the present invention, including a pier 1 and a steel box girder bottom plate 2. The top of the pier 1 is movably connected with an anchor plate 3 through bolts. The top of the anchor plate 3 is fixedly provided with an installation cylinder 4. A motor 401 is fixedly arranged inside the installation cylinder 4. One end of the output shaft of the motor 401 is fixedly connected with one end of a first threaded rod 402. A threaded sleeve 403 is movably arranged outside the first threaded rod 402. The top of the threaded sleeve 403 is fixedly provided with an installation plate 5. A rotating rod 501 is rotatably arranged between the installation plates 5. The surface of the rotating rod 501 is fixedly connected with one end of an electric telescopic rod 502. The telescopic end of the electric telescopic rod 502 is fixedly connected with one side of a top block 503. A fixed plate 6 is fixedly arranged on the surface of the installation plate 5. A second threaded rod 601 is movably arranged inside the fixed plate 6. Nut seats 602 are movably arranged outside both ends of the second threaded rod 601. A connecting rod 603 is fixedly arranged at the bottom of the nut seat 602. The other end of the connecting rod 603 is fixedly provided with an arc-shaped clamping plate 604.

[0020] Specifically, embedded steel pipes 101 are fixedly arranged between the piers 1. Connecting steel bolts 102 are movably arranged around and at the bottom of the embedded steel pipes 101. A connecting steel pipe 201 is fixedly arranged at the bottom of the steel box girder bottom plate 2. A steel column pin 202 is fixedly arranged at the bottom of the connecting steel pipe 201.

[0021] In this implementation plan, by setting the embedded steel pipe 101, connecting steel bolts 102, connecting steel pipes 201 and steel column pins 202, the staff first inserts the steel column pin 202 into the inside of the embedded steel pipe 101 and can fix it with the connecting steel bolts 102, thereby being able to perform lateral limit on the steel box girder bridge.

[0022] Specifically, the connection relationship between the first threaded rod 402 and the threaded sleeve 403 is a threaded connection, and a threaded hole adapted to the first threaded rod 402 is provided inside the threaded sleeve 403.

[0023] In this implementation plan, by setting the first threaded rod 402 and the threaded sleeve 403, using the threaded connection relationship between the first threaded rod 402 and the threaded sleeve 403, by starting the motor 401 to drive the first threaded rod 402 to rotate with its output shaft, the threaded sleeve 403 can be made to move vertically up and down along the outside of the first threaded rod 402, and thus the steel box girder bridge can be adjusted to a suitable position according to its height.

[0024] Specifically, sliders 404 are fixedly provided on both sides of the threaded sleeve 403, sliding grooves 405 adapted to the sliders 404 are provided on both sides of the inner wall of the mounting cylinder 4, and the connection relationship between the sliders 404 and the sliding grooves 405 is a sliding connection.

[0025] In this implementation plan, by setting the sliders 404 and the sliding grooves 405, using the sliding connection relationship between the sliders 404 and the sliding grooves 405, when the threaded sleeve 403 drives the mounting plate 5 to move vertically up and down, the sliders 404 also slide synchronously inside the sliding grooves 405, which can improve the stability of the movement of the threaded sleeve 403, and thus can improve the stability of the entire lifting mechanism, having strong practicability.

[0026] Specifically, an anti-slip pad is fixedly provided on the other side of the top block 503.

[0027] In this implementation plan, by setting the anti-slip pad, the friction with both sides of the steel box girder bridge can be increased, the stability of the support of the top block 503 on the steel box girder bridge can be improved, the steel box girder bridge can be prevented from tipping over, and the safety is improved.

[0028] Specifically, the connection relationship between the second threaded rod 601 and the nut seat 602 is a threaded connection, and a threaded hole adapted to the second threaded rod 601 is provided inside the nut seat 602.

[0029] In this embodiment, by setting a second threaded rod 601 and a nut seat 602, and utilizing the threaded connection relationship between the second threaded rod 601 and the nut seat 602, the second threaded rod 601 is driven to rotate, so that the nut seat 602 drives the connecting rod 603 to make a reverse horizontal movement along the outside of the second threaded rod 601, and then the connecting rod 603 drives the arc-shaped clamping plate 604 to make a reverse horizontal movement, so that one end of the rotating rod 501 can be clamped and fixed, and it can be locked to maintain a specific angle.

[0030] When in use, the staff first inserts the steel column pin 202 into the embedded steel pipe 101, and fixes it with the connecting steel bolt 102, so that the steel box girder bridge can be laterally limited. During the installation process, the motor 401 is started to make its output shaft drive the first threaded rod 402 to rotate, so that the threaded sleeve 403 performs vertical lifting movement along the outside of the first threaded rod 402, and it can be adjusted to a suitable position according to the height of the steel box girder bridge. It is adjusted to a suitable angle by rotating the rotating rod 501, and then the second threaded rod 601 is driven to rotate, so that the nut seat 602 drives the connecting rod 603 and the arc clamping plate 604 to perform reverse horizontal movement, so that the rotating rod 501 can be clamped, and the rotating rod 501 is locked. Finally, the electric telescopic rod 502 is started to make its telescopic end drive the top block 503 to extend and retract, so that the two sides of the steel box girder can be supported, effectively preventing the steel box girder from tipping over, and having high safety.

[0031] To sum up, the lateral limit device of the curved steel box girder bridge is provided with an anti-rollover mechanism of the steel box girder bridge. The staff starts the motor 401 to make its output shaft drive the first threaded rod 402 to rotate, so that the threaded sleeve 403 drives the mounting plate 5 to perform vertical lifting movement and adjusts it to a suitable position. Then, the rotating rod 501 is rotated to a suitable angle, and the second threaded rod 601 is driven to rotate, so that the nut seat 602 drives the connecting rod 603 and the arc clamping plate 604 to perform reverse horizontal movement, so that the rotating rod 501 can be clamped and the rotating rod 501 can be locked. Finally, the electric telescopic rod 502 is started so that its telescopic end drives the top block 503 to extend and retract, so that the two sides of the steel box girder can be supported, effectively preventing the steel box girder from rolling over, and the safety is high.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lateral limiting device for a curved steel box girder bridge, comprising a bridge pier (1) and a steel box girder bottom plate (2), characterized in that: The top of the pier (1) is movably connected with an anchor plate (3) through bolts. The top of the anchor plate (3) is fixedly provided with an installation cylinder (4). An electric motor (401) is fixedly arranged inside the installation cylinder (4). The output shaft of the electric motor (401) is fixedly connected with one end of a first threaded rod (402). A threaded sleeve (403) is movably arranged outside the first threaded rod (402). The top of the threaded sleeve (403) is fixedly provided with a mounting plate (5). A rotating rod (501) is rotatably arranged between the mounting plates (5). The surface of the rotating rod (501) is fixedly connected with one end of an electric telescopic rod (502). The telescopic end of the electric telescopic rod (502) is fixedly connected with one side of a top block (503). A fixed plate (6) is fixedly arranged on the surface of the mounting plate (5). A second threaded rod (601) is movably arranged inside the fixed plate (6). Nuts (602) are movably arranged outside both ends of the second threaded rod (601). The bottom of the nut (602) is fixedly provided with a connecting rod (603). The other end of the connecting rod (603) is fixedly provided with an arc-shaped clamping plate (604).

2. The lateral restraint device for a curved steel box girder bridge according to claim 1, wherein: An embedded steel pipe (101) is fixedly arranged between the piers (1). Connecting steel bolts (102) are movably arranged around and on the bottom wall of the embedded steel pipe (101). A connecting steel pipe (201) is fixedly arranged at the bottom of the steel box girder bottom plate (2). A steel column pin (202) is fixedly arranged at the bottom of the connecting steel pipe (201).

3. The lateral limiting device for a curved steel box girder bridge according to claim 1, wherein: The connection relationship between the first threaded rod (402) and the threaded sleeve (403) is a threaded connection. A threaded hole adapted to the first threaded rod (402) is formed inside the threaded sleeve (403).

4. The lateral limit device for a curved steel box girder bridge according to claim 1, characterized in that: Sliders (404) are fixedly arranged on both sides of the threaded sleeve (403). Sliding grooves (405) adapted to the sliders (404) are formed on both sides of the inner wall of the installation cylinder (4). The connection relationship between the slider (404) and the sliding groove (405) is a sliding connection.

5. The lateral limit device for a curved steel box girder bridge according to claim 1, characterized in that: An anti-slip pad is fixedly arranged on the other side of the top block (503).

6. The lateral limit device for a curved steel box girder bridge according to claim 1, characterized in that: The connection relationship between the second threaded rod (601) and the nut (602) is a threaded connection. A threaded hole adapted to the second threaded rod (601) is formed inside the nut (602).

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