A comprehensive reinforcement device for long-span bridges

Abstract

The present application relates to a comprehensive reinforcement device for a long-span bridge, which relates to the technical field of bridges, and includes two groups of cables, which are arranged on both sides of the bridge body, one end of the cable is fixedly connected to the middle edge of the bridge body, and the other end is detachably fixed to the bridge foundation through a fixing unit, and the bridge foundation is provided with a first winding unit for winding and releasing the cable, and the first winding unit corresponds to the cable one-to-one, and the bridge body is provided with a second winding unit, which corresponds to the cable one-to-one and is used to pull the cable to bend, so that ships can pass under the bridge body. The present application has cables that pull down both sides of the middle position of the bridge body, which can effectively prevent the bridge body from flipping when encountering crosswinds, thereby achieving the effect of strengthening the bridge.

Description

Technical Field

[0001] The present application relates to the technical field of bridges, and in particular to a comprehensive reinforcement device for long-span bridges. Background Art

[0002] With the continuous advancement of transportation infrastructure construction, long-span bridges play an increasingly important role in the transportation network. Suspension bridges, as a type of long-span bridge, are mainly used in bridges across the sea and across rivers.

[0003] The middle position of the existing suspension bridge is far away from the fixed positions at both ends of the bridge, resulting in poor stability in the middle position of the bridge. When encountering strong crosswinds, the middle position of the bridge will flip to a certain extent. Relying solely on the suspension cables cannot effectively limit the flipping between the bridge positions, thereby reducing the strength of the suspension bridge. Utility Model Content

[0004] In order to improve the problem that the slings cannot effectively restrict the overturning at the positions between the bridges, resulting in reduced strength of the suspension bridge, the present application provides a comprehensive reinforcement device for long-span bridges.

[0005] The present application provides a comprehensive reinforcement device for a long-span bridge, which adopts the following technical solution:

[0006] A comprehensive reinforcement device for a long-span bridge comprises two groups of cables, which are arranged on both sides of a bridge body, one end of the cable is fixedly connected to the middle edge of the bridge body, and the other end is detachably fixed to the bridge foundation through a fixing unit, a first winding unit for winding and releasing the cable is provided on the bridge foundation, and the first winding unit corresponds to the cable one-to-one, and a second winding unit is provided on the bridge body, and the second winding unit corresponds to the cable one-to-one and is used to pull the cable to bend so that a ship can pass under the bridge body.

[0007] By adopting the above technical solution, when the bridge body encounters a strong crosswind, the first winding unit on both sides of the bridge body pulls the cable to straighten it, and then fixes the cable to the bridge foundation through the fixing unit, and pulls down both sides of the middle position of the bridge body through the cable, which can effectively prevent the bridge body from flipping when encountering a crosswind, thereby achieving reinforcement of the bridge; when the crosswind is small, the second winding unit is driven to pull the cable to bend, ensuring that the ship can pass smoothly under the bridge.

[0008] In a specific feasible implementation manner, the first winding unit includes a first winding motor and a first winding drum, the first winding drum is rotatably arranged on the bridge foundation, the first winding motor is fixedly arranged on the bridge foundation and is used to drive the first winding drum to rotate, and the cable is fixedly connected to the first winding drum and can be wound around the first winding drum.

[0009] By adopting the above technical solution, when the cable is wound up and unfolded, the first winding motor rotates forward and flips, driving the first winding drum to rotate forward and flip, thereby realizing the winding and unfolding of the cable.

[0010] In a specific possible implementation scheme, the fixing unit includes a fixing plate, a limiting member and a locking member. The fixing plate is fixedly disposed on the bridge foundation. The limiting member is disposed on the fixing plate and is used to limit the sliding of the cable pulled by the bridge body. The locking member is disposed on the fixing plate and is used to fix the limiting member on the fixing plate.

[0011] By adopting the above technical solution, when the first winding motor winds up the cable to make it straight, the limiting member is fixed on the cable, and then the limiting member is fixed to the fixed plate by the locking member, thereby completing the fixation of the cable and the bridge foundation, so that both sides of the middle position of the bridge body are subjected to the downward pulling force of the cable, effectively preventing the middle position of the bridge body from flipping over.

[0012] In a specific feasible implementation scheme, the limiting member includes four clamping blocks, and the four clamping blocks are arranged opposite to each other in pairs. Each of the clamping blocks is provided with an arc groove, and the four arc grooves can enclose a fixed space for the cable to pass through. The fixing plate is provided with a fixing hole for placing the four clamping blocks, and the four clamping blocks are used to compress and fix the cable through a tightening structure.

[0013] By adopting the above technical solution, when restricting the cable, four clamping blocks are inserted into the fixing holes, and then the four arc-shaped grooves surround a fixed space, the cable passes through the fixed space, and then the clamping block is squeezed and fixed on the cable through the tightening structure, completing the extrusion fixation between the clamping block and the cable.

[0014] In a specific possible implementation scheme, the tightening structure includes a first guide surface arranged on the side wall of the fixing hole, the first guide surface corresponds to the card block one by one, the first guide surface can guide the card block to squeeze and fix the cable, the bridge body can pull the card block to squeeze the first guide surface through the cable, and the locking piece can stably press the card block against the first guide surface.

[0015] By adopting the above technical solution, when the card block is inserted into the fixing hole, the locking member drives the card block to squeeze the first guide surface. At the same time, under the guidance of the first guide surface, the card block presses and fixes the cable. As the cable is subjected to increasing tension from the bridge body, the fixing pressure of the card block on the cable becomes greater, thereby making the connection reliability between the cable and the fixing plate higher.

[0016] In a specific possible implementation manner, the block is provided with a second guide surface for slidingly fitting with the first guide surface.

[0017] By adopting the above technical solution, the uniformity of the force between the first guide surface and the block is improved through the fit between the first guide surface and the second guide surface, and the friction between the first guide surface and the block is reduced.

[0018] In a specific possible implementation scheme, the locking member includes a support tube and an extrusion tube. The support tube is fixedly arranged on a side of the fixing plate away from the anchoring point of the cable and the bridge body. The extrusion tube is inserted into the support tube and threadedly connected to the support tube. The extrusion tube is used to press the block against the first guide surface.

[0019] By adopting the above technical solution, when driving the clamping block to extrude and fix the cable, the operator drives the extrusion cylinder to rotate, and the extrusion cylinder, under the action of the support cylinder, pushes the clamping block to extrude the first guide surface, so that the clamping block can stably extrude and fix the cable.

[0020] In a specific feasible implementation manner, the second winding unit includes a second winding motor, a second winding drum, and a winding rope. The second winding drum is rotatably arranged on the bridge body. The second winding motor is used to drive the second winding drum to rotate and wind up the winding rope. One end of the winding rope is fixedly connected to the cable and can pull the cable to bend, so that the ship passes under the bridge body.

[0021] By adopting the above technical solution, when the crosswind weakens, the fixation between the cable and the fixed plate is released, the second winding motor drives the second winding drum to rotate, and the cable is pulled by the winding lock to bend the cable, and the cable is stored and sorted, thereby effectively avoiding the influence of the cable on the ships passing under the bridge.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. When the bridge body encounters a strong crosswind, the first winding unit on both sides of the bridge body pulls the cable to straighten it, and then fixes the cable to the bridge foundation through the fixing unit. The cables are used to pull down both sides of the middle of the bridge body, which can effectively prevent the bridge body from flipping when encountering crosswind, thereby achieving the reinforcement of the bridge;

[0024] 2. When the crosswind weakens, the cable is released from the fixing plate, the second winding motor drives the second winding drum to rotate, and the cable is pulled through the winding lock to bend and store the cable, thereby effectively avoiding the influence of the cable on the ships passing under the bridge;

[0025] 3. When the card block is inserted into the fixing hole, the locking piece drives the card block to squeeze the first guide surface. At the same time, under the guidance of the first guide surface, the card block presses and fixes the cable. As the tension of the bridge body increases, the fixing pressure of the card block on the cable becomes greater, making the connection reliability between the cable and the fixing plate higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of a comprehensive reinforcement device for a large-span bridge according to an embodiment of the present application.

[0027] Figure 2 It is a schematic diagram for showing the structure of the first winding unit.

[0028] Figure 3 is along Figure 2 Section view along line AA.

[0029] Figure 4 It is an exploded view used to show a fixed space.

[0030] Figure 5 yes Figure 1 Enlarged view of part B in the middle.

[0031] Explanation of the reference numerals: 1. cable; 21. bridge body; 22. bridge foundation; 3. first winding unit; 31. first winding motor; 32. first winding drum; 4. fixing unit; 41. fixing plate; 411. fixing hole; 42. limiting member; 421. block; 422. arc groove; 423. fixing space; 43. locking member; 431. supporting cylinder; 432. extrusion cylinder; 44. tightening structure; 441. first guide surface; 442. second guide surface; 5. second winding unit; 51. second winding motor; 52. second winding drum; 53. winding cable; 54. supporting platform. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-5 This application is described in further detail.

[0033] An embodiment of the present application discloses a comprehensive reinforcement device for a long-span bridge.

[0034] Reference Figure 1A comprehensive reinforcement device for a long-span bridge includes two groups of cables 1, which are arranged on both sides of a bridge body 21. Bridge foundations 22 are provided below both ends of the bridge body 21. There are two cables in each group. One end of each of the two cables 1 in each group is fixed to the side of the middle position of the bridge body 21, and the other end is fixedly connected to the two bridge foundations 22. A first winding unit 3 and a fixing unit 4 are provided on each bridge foundation 22. The first winding unit 3 corresponds to the cable 1 one by one. The end of the cable 1 away from the bridge body 21 is connected to the first winding unit 3. The first winding unit 3 can wind up and unfold the cable 1. The fixing unit 4 is arranged in front of the first winding unit 3 and fixes the cable 1 to reduce the tension of the cable 1 on the first winding unit 3, so that the bridge foundation 22 can apply tension to the edge of the bridge body 21 through the cable 1. A second winding unit 5 is provided laterally of the bridge body 21 . The second winding unit 5 corresponds to the cable 1 one by one and is used to pull the cable 1 to bend and store the cable 1 so that the ship can pass under the bridge body 21 .

[0035] When the bridge body 21 encounters a strong crosswind, the first winding unit 3 on both sides of the bridge body 21 pulls the cable 1 to straighten it, and then fixes the cable 1 to the bridge foundation 22 through the fixing unit 4, and pulls down both sides of the middle position of the bridge body 21 through the cable 1, which can effectively prevent the bridge body 21 from flipping when encountering a crosswind, thereby reinforcing the bridge and improving the strength of the bridge; when the crosswind is small, drive the second winding unit 5 to pull the cable 1 to bend, to ensure that the ship can pass smoothly under the bridge.

[0036] Reference Figure 2 In this embodiment, the first winding unit 3 includes a first winding motor 31 and a first winding drum 32. The first winding drum 32 is rotatably set on the bridge foundation 22 through a rotating support. The first winding motor 31 is fixedly set on the bridge foundation 22. The bridge foundation 22 is connected to the first winding drum 32 through a reducer transmission between the output shaft end of the first winding motor 31. The end of the cable 1 is fixedly set on the peripheral side wall of the first winding drum 32. The first winding drum 32 is rotated to wind up the cable 1.

[0037] Reference Figure 2 , Figure 3 The fixing unit 4 in this embodiment includes a fixing plate 41, a limiting member 42 and a locking member 43. The fixing plate 41 is fixedly disposed on the bridge foundation 22. The fixing plate 41 is disposed in front of the first winding drum 32. The fixing plate 41 is provided with a fixing hole 411 for the cable 1 to pass through.

[0038] Reference Figure 3 , Figure 4In this embodiment, the limiting member 42 includes four blocks 421, which are arranged opposite to each other in pairs. The central angle between two adjacent blocks 421 along the circumferential direction is 90°. Arc grooves 422 are provided on the opposite sides of the two opposite blocks 421. Each arc groove 422 passes through the block 421 along the direction of the cable 1. The four arc grooves 422 can enclose a circular fixed space 423 for the cable 1 to pass through. The four blocks 421 are all used to compress and fix the cable 1 through the tightening structure 44.

[0039] Reference Figure 3 , Figure 4 The tightening structure 44 includes a first guide surface 441 arranged on the side wall of the fixing hole 411, the first guide surface 441 corresponds to the block 421 one by one, and the corresponding central angle between the two adjacent first guide surfaces 441 along the circumference of the fixing hole 411 is 90°, and the distance between the two oppositely arranged first guide surfaces 441 gradually decreases from the side of the fixing plate 41 close to the first winding drum 32 to the side away from the first winding drum 32. Each block 421 is provided with a second guide surface 442 that is in contact with the first guide surface 441. The block 421 is inserted into the fixing hole 411 from the side of the fixing hole 411 close to the first winding drum 32, so that the first guide surface 441 can be in contact with the second guide surface 442. Through the contact between the first guide surface 441 and the second guide surface 442, the uniformity of the force between the first guide surface 441 and the block 421 is improved, and the friction between the first guide surface 441 and the block 421 is reduced. Stripes are arranged in each arc groove 422 along the circumference of the cable 1 to increase the friction between the clamping block 421 and the cable 1 .

[0040] Reference Figure 3 , Figure 4 The locking member 43 in this embodiment includes a support tube 431 and an extrusion tube 432. The support tube 431 is fixedly arranged on one side of the fixing plate 41 close to the first winding tube 32. The four clamping blocks 421 are all located inside the support tube 431. The extrusion tube 432 is inserted into the support tube 431 and is threadedly connected with the support tube 431. One end of the extrusion tube 432 extends out of the support tube 431 to facilitate the rotation of the extrusion tube 432. One end of the clamping block 421 extends out of the fixing hole 411 for the extrusion tube 432 to be extruded. The cable 1 passes through the extrusion tube 432. The end of the extrusion tube 432 is opposite to the end of the clamping block 421. The rotation of the extrusion tube 432 can press the second guide surface 442 against the first guide surface 441.

[0041] Initially, there is a gap between the extrusion cylinder 432 and the block 421, and the cable 1 is in a free sliding state. Then the first winding motor 31 drives the first winding cylinder 32 to rotate, and the cable 1 is in a taut state. Then the operator rotates the extrusion cylinder 432 to move toward the block 421, and squeezes the block 421 toward the first guide surface 441. The block 421 presses and fixes the cable 1 under the guidance of the first guide surface 441, thereby completing the fixation of the cable 1. As the tension of the bridge body 21 on the cable 1 increases, the fixing pressure of the block 421 on the cable 1 increases, making the connection reliability between the cable 1 and the fixing plate 41 higher.

[0042] Reference Figure 1 , Figure 5 The second winding unit 5 in this embodiment includes a second winding motor 51, a second winding drum 52, and a winding rope 53. A support platform 54 is fixedly provided on the side of the bridge body 21. The second winding drum 52 is rotatably set on the support platform 54 through a rotating support. The second winding motor 51 is fixedly set on the support platform 54. The output shaft of the second winding motor 51 is connected to the second winding drum 52 through a reducer, and drives the second winding drum 52 to rotate. One end of the winding rope 53 is fixedly connected to the cable 1. The positions of the fixed points of the winding rope 53 and the cable 1 can be set according to the on-site conditions, so that after the winding rope 53 pulls the cable 1 to bend and store it, the cable 1 will not block the ship from passing under the bridge body 21.

[0043] When the crosswind weakens, the cable 1 is released from the fixing plate 41, and the second winding motor 51 drives the second winding drum 52 to rotate, and the cable 1 is pulled by the winding cable 53 to bend, so that the cable 1 is stored and arranged, thereby effectively avoiding the influence of the cable 1 on the ships under the bridge.

[0044] The implementation principle of a comprehensive reinforcement device for a large-span bridge in an embodiment of the present application is as follows: when the bridge body 21 encounters a strong crosswind, the first winding motor 31 drives the first winding drum 32 to tighten the cable 1, and the second winding motor 51 drives the second winding drum 52 to release the winding cable 53, and then the extrusion cylinder 432 is rotated, and the extrusion cylinder 432 presses and fixes the block 421 to the cable 1 under the guidance of the first guide surface 441, and the two sides at the middle position of the bridge body 21 are pulled down by the cable 1, which can effectively prevent the bridge body 21 from flipping when encountering a crosswind, thereby achieving reinforcement of the bridge and improving the strength of the bridge; when the crosswind is small, the rotating extrusion cylinder 432 is disengaged from the block 421, and the contact cable 1 is fixed, and then the first winding motor 31 drives the first winding drum 32 to release the cable 1, and the second winding motor 51 winds up the winding cable 53, and pulls the cable 1 to bend and store, so as to ensure that the ship can pass smoothly under the bridge.

[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A comprehensive reinforcement device for a long-span bridge, characterized in that: The invention comprises two groups of cables (1), wherein the two groups of cables (1) are arranged on both sides of a bridge body (21), one end of the cables (1) is fixedly connected to the middle edge of the bridge body (21), and the other end is detachably fixed to the bridge foundation (22) through a fixing unit (4), and the bridge foundation (22) is provided with a first winding unit (3) for winding and releasing the cables (1), and the first winding unit (3) corresponds to the cables (1) one by one, and the bridge body (21) is provided with a second winding unit (5), and the second winding unit (5) corresponds to the cables (1) one by one, and is used to pull the cables (1) to bend, so that a ship can pass under the bridge body (21).

2. The long-span bridge comprehensive reinforcement device according to claim 1 is characterized in that: The first winding unit (3) comprises a first winding motor (31) and a first winding drum (32); the first winding drum (32) is rotatably arranged on the bridge base (22); the first winding motor (31) is fixedly arranged on the bridge base (22) and is used to drive the first winding drum (32) to rotate; the cable (1) is fixedly connected to the first winding drum (32) and can be wound around the first winding drum (32).

3. The long-span bridge comprehensive reinforcement device according to claim 1 is characterized in that: The fixing unit (4) comprises a fixing plate (41), a limiting member (42) and a locking member (43); the fixing plate (41) is fixedly arranged on the bridge foundation (22); the limiting member (42) is arranged on the fixing plate (41) and is used to limit the bridge body (21) from pulling the cable (1) to slide; the locking member (43) is arranged on the fixing plate (41) and is used to fix the limiting member (42) on the fixing plate (41).

4. The long-span bridge comprehensive reinforcement device according to claim 3 is characterized in that: The limiting member (42) comprises four clamping blocks (421), the four clamping blocks (421) are arranged opposite to each other in pairs, each of the clamping blocks (421) is provided with an arcuate groove (422), the four arcuate grooves (422) can enclose a fixed space (423) for the cable (1) to pass through, the fixing plate (41) is provided with a fixing hole (411) for the four clamping blocks (421) to be placed, and the four clamping blocks (421) are used to compress and fix the cable (1) through a tightening structure (44).

5. The long-span bridge comprehensive reinforcement device according to claim 4 is characterized in that: The tightening structure (44) includes a first guide surface (441) arranged on the side wall of the fixing hole (411), the first guide surface (441) corresponds to the clamping block (421) one by one, the first guide surface (441) can guide the clamping block (421) to squeeze and fix the cable (1), and the bridge body (21) can pull the clamping block (421) to squeeze the first guide surface (441) through the cable (1).

6. The long-span bridge comprehensive reinforcement device according to claim 5 is characterized in that: The clamping block (421) is provided with a second guide surface (442) for slidingly fitting with the first guide surface (441).

7. The long-span bridge comprehensive reinforcement device according to claim 5 is characterized in that: The locking member (43) comprises a support tube (431) and an extrusion tube (432); the support tube (431) is fixedly arranged on a side of the fixing plate (41) away from the anchoring point of the cable (1) and the bridge body (21); the extrusion tube (432) is inserted into the support tube (431) and is threadedly connected to the support tube (431); the extrusion tube (432) is used to press the block (421) onto the first guide surface (441).

8. The long-span bridge comprehensive reinforcement device according to claim 1 is characterized in that: The second winding unit (5) comprises a second winding motor (51), a second winding drum (52), and a winding rope (53); the second winding drum (52) is rotatably arranged on the bridge body (21); the second winding motor (51) is used to drive the second winding drum (52) to rotate and to wind up the winding rope (53); one end of the winding rope (53) is fixedly connected to the cable (1) and can pull the cable (1) to bend, so that the ship passes under the bridge body (21).

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