Sliding guide frame for dragging construction of lower cover beam of bridge

Abstract

The utility model discloses a sliding guide frame for dragging construction of an under-bridge cover beam. The sliding guide frame comprises a pair of support bodies, a supporting block and a jack. The support bodies comprise a first support and a second support, the first support is located below the existing bridge, the second support is located outside the existing bridge, and the two support bodies are connected with bridge piers used in cooperation with the guide frame; the supporting blocks are fixedly mounted on a transverse frame at the top of each bracket body, the supporting blocks are used for placing a steel cover beam used in cooperation with the guide frame, the multiple pairs of supporting blocks are arranged, and each pair of supporting blocks are arranged in the length direction of the steel cover beam; the jacks are fixedly installed on the top of the support body, and one side of each supporting block is provided with one jack. The device has the effect of assisting the steel cover beam to accurately fall on the pier after sliding, so that the construction progress is accelerated.

Description

Technical Field

[0001] The invention relates to the field of engineering construction, in particular to a sliding guide frame for dragging construction of a bridge cap beam. Background Art

[0002] When building an overpass, multiple pairs of piers are built in sequence along the predetermined direction, and steel cap beams are erected on each pair of piers as supports for the bridge's superstructure. Workers then carry out subsequent construction on the steel cap beams. However, when building a bridge under an existing bridge and using a crane to lift the steel cap beams to the piers, the existing bridge will block the crane's lifting rope, making it difficult for the crane to directly lift the steel cap beam into place, hampering construction and delaying construction progress. Summary of the invention

[0003] In order to assist the steel cap beam to accurately land on the bridge pier after sliding and speed up the construction progress, the present application provides a sliding guide frame for dragging the cap beam under the bridge.

[0004] The present application provides a sliding guide frame for the dragging construction of the bridge cap beam, which adopts the following technical solution:

[0005] A sliding guide frame for dragging construction of a bridge cap beam, comprising a pair of support bodies, support blocks and jacks; the support body comprises a first support and a second support, the first support is located under an existing bridge, the second support is located outside the existing bridge, and both support bodies are connected to bridge piers for use with the guide frame; the support blocks are fixedly installed on the cross frames on the top of each support body, the support blocks are used to place steel cap beams for use with the guide frame, and multiple pairs of support blocks are provided and each pair of support blocks is arranged along the length direction of the steel cap beam; the jack is fixedly installed on the top of the support body and the jack is provided on one side of each support block.

[0006] By adopting the above technical solution, the steel cap beam is hoisted under the existing bridge and when one end of the steel cap beam under the bridge moves to the maximum limit, the steel cap beam is lowered to the support block of the bracket body, and then the workers begin to drag the steel cap beam. When the steel cap beam is dragged to the pier under the existing bridge, the steel cap beam is first lifted up by a jack. At this time, the workers can remove the support block from the bracket body, and then lower the steel cap beam to the pier whose height is lower than the original height of the support block by the jack. The workers can then fix the steel cap beam on the pier, and complete the placement of the steel cap beam under the existing bridge; the steel cap beam is changed from hoisting to dragging through the bracket, thereby completing the placement of the steel cap beam under the bridge that is difficult to hoist.

[0007] Preferably, each of the bracket bodies is hollow, and the piers include a first pier and a second pier corresponding to each of the bracket bodies one by one, the first bracket is located on a side of the first pier close to the second bracket, the second bracket is sleeved on the second pier, and a connecting component is provided between the first bracket and the first pier.

[0008] By adopting the above technical solution, because the construction position of the first bracket is the maximum depth that the steel cap beam can reach under the existing bridge during hoisting, in the absence of an external supporting structure, the single first bracket may be crushed and damaged under the dead weight of the steel cap beam. An external connecting assembly is used to connect the first bracket to the first bridge pier to increase the stability of the first bracket.

[0009] Preferably, the connection assembly comprises an outer covering plate and a connection frame, the outer covering plate is sleeved on the first pier, and the connection frame has one end fixedly connected to the first bracket and the other end connected to the outer covering plate on the first pier.

[0010] By adopting the above technical solution, an outer covering plate is sleeved on the first pier, thereby facilitating the connection between the concrete pier and the steel connecting frame.

[0011] Preferably, an installation opening for pouring concrete is reserved on the first bracket, a steel frame is reserved in the installation opening of the first bracket, and one end of the connecting frame away from the first bracket is fixedly connected to the steel frame; a sealing member for sealing the installation opening is provided on the connecting frame.

[0012] By adopting the above technical solution, the connecting frame is welded and fixed to the steel frame in the installation opening, and then concrete is poured into the installation opening. The installation opening is then sealed with a plugging piece. After the concrete solidifies, the connection stability between the connecting frame and the first pier is improved by fixing the steel frame and the concrete.

[0013] Preferably, the blocking member comprises a sealing cover, and the sealing cover is sleeved on the connecting frame.

[0014] By adopting the above technical solution, after pouring concrete, the cover on the connecting frame is slid until the cover is placed on the installation port to complete the sealing. This sealing method has a simple structure and fast operation, which is conducive to workers to quickly seal.

[0015] Preferably, an electric hoist is provided on the first bracket, a steel wire rope is provided on the electric hoist, and one end of the steel wire rope away from the electric hoist is connected to the steel cap beam.

[0016] By adopting the above technical solution, the steel cap beam can be dragged and driven toward the first support by simply starting the electric hoist, thereby reducing manpower consumption.

[0017] Preferably, a polytetrafluoroethylene plate is provided on the top of the support block.

[0018] By adopting the above technical solution, a smooth polytetrafluoroethylene plate is used to place the steel cap beam on the polytetrafluoroethylene plate, thereby reducing the friction between the steel cap beam and the support block, thereby facilitating the sliding of the steel cap beam.

[0019] Preferably, a vertical frame is provided at the top of each bracket body and on both sides of the steel cap beam in the length direction, and a limiting pulley is provided on the side where the two vertical frames are close to each other, and the limiting pulley is used to abut against the side of the steel cap beam along the length direction.

[0020] By adopting the above technical solution, after setting limiting pulleys on both sides, the steel cap beam is restricted between the limiting rollers on both sides, thereby reducing the path deviation of the steel cap beam during the sliding process, so that the steel cap beam can stably slide onto the bridge pier.

[0021] In summary, the present application includes at least one of the following beneficial technical effects:

[0022] 1. Lower the steel cap beam to the support block of the support body, and then the workers start to drag the steel cap beam. When the steel cap beam is dragged to the pier under the existing bridge, the steel cap beam is first lifted up with a jack. At this time, the workers can remove the support block from the support body, and then lower the steel cap beam to the pier whose height is lower than the original height of the support block through the jack. The workers can then fix the steel cap beam on the pier and complete the placement of the steel cap beam under the existing bridge;

[0023] 2. An additional connecting component is used to connect the first bracket to the first bridge pier to increase the stability of the first bracket;

[0024] 3. After setting the limiting pulleys on both sides, the steel cap beam is restricted between the limiting rollers on both sides, thereby reducing the path deviation of the steel cap beam during the sliding process, so that the steel cap beam can slide stably onto the bridge pier. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the bracket body of the embodiment of the present application.

[0026] Figure 2 yes Figure 1 A is an enlarged view of the middle image.

[0027] Figure 3 It is a side view of the steel cap beam of the embodiment of the present application when it is installed in place.

[0028] Figure 4 It is a cross-sectional view of the installation of the bridge pier and the connecting frame in the embodiment of the present application.

[0029] Description of reference numerals:

[0030] 1. Bracket body; 11. First bracket; 12. Second bracket; 101. Support block; 102. Electric hoist; 103. Vertical frame; 104. Limit pulley; 105. Installation port; 106. Steel bar skeleton; 3. Jack; 4. Pier; 5. Steel cap beam; 6. Connection assembly; 61. Outer plate; 62. Connection frame; 7. Cover. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-4 This application is described in further detail.

[0032] The embodiment of the present application discloses a sliding guide frame for the dragging construction of a bridge cap beam.

[0033] Reference Figure 1 and Figure 2 The guide frame includes a pair of support bodies 1, support blocks 101 and jacks 3; the support body 1 includes a first support 11 and a second support 12, the first support 11 is located under the existing bridge, and the second support 12 is located outside the existing bridge, and the two support bodies 1 are connected to the piers 4 used in conjunction with the guide frame; a support block 101 is fixedly installed on the cross frame at the top of each support body 1, and the support block 101 is used to place the steel cap beam 5 used in conjunction with the guide frame, and there are multiple pairs of support blocks 101 and each pair of support blocks 101 is arranged along the length direction of the steel cap beam 5, and the height of the support block 101 on the support is greater than the height of the top of the pier 4; a polytetrafluoroethylene plate is arranged on the top of each support block 101, and the smooth characteristics of the polytetrafluoroethylene plate are used to reduce the friction between the steel cap beam 5 and the support block 101, so that the steel cap beam 5 can slide on the support block 101; the jack 3 is fixedly installed on the top of the support body 1 and a jack 3 is arranged on one side of each support block 101.

[0034] Reference Figure 1 and Figure 3 Each support body 1 is hollow, and the pier 4 includes a first pier and a second pier corresponding to each support body 1. The first support 11 is located on the side of the first pier close to the second support 12 and the construction position of the first support 11 is located at the maximum depth that the steel cap beam 5 can be hoisted. The second support 12 is mounted on the second pier and connected to the second support 12. An electric hoist 102 is arranged on the first support 11, and a steel wire rope is arranged on the electric hoist 102. The end of the steel wire rope away from the electric hoist 102 is connected to the steel cap beam 5.

[0035] After the steel cap beam 5 is hoisted onto the support block 101, the electric hoist 102 is started and the wire rope is tightened, thereby dragging the steel cap beam 5 placed on the support block 101. When it is dragged into place, the two ends of the steel cap beam 5 are respectively located directly above the two piers 4. At this time, the worker starts the jack 3 again to lift the steel cap beam 5, thereby separating the steel cap beam 5 from the support block 101. At this time, the worker removes the support block 101 to leave a landing height for the steel cap beam 5; the jack 3 is started again to lower the steel cap beam 5 so that it is placed on the pier 4. In this way, the steel cap beam 5 is changed from being directly hoisted to being dragged after being hoisted to the maximum distance, thereby achieving the purpose of placing the steel cap beam 5 on the pier 4 under the existing bridge.

[0036] Reference Figure 2 A vertical frame 103 is provided on the top of each bracket body 1 and on both sides of the steel cap beam 5 in the length direction. A limiting pulley 104 is provided on the side where the two vertical frames 103 are close to each other. The limiting pulley 104 is used to abut against the side of the steel cap beam 5 along the length direction. The vertical frame 103 and the limiting pulley 104 limit the sliding path of the steel cap beam 5 in the horizontal direction, thereby reducing the risk of the steel cap beam 5 falling to the ground after deflection and causing an accident.

[0037] Reference Figure 3 and Figure 4 A connecting assembly 6 is provided between the first bracket 11 and the first pier 4; the connecting assembly 6 includes an outer plate 61 and a connecting frame 62, the outer plate 61 is sleeved on the first pier 4, one end of the connecting frame 62 is fixedly connected to the first bracket 11, and the other end is connected to the outer plate 61 on the first pier 4, connecting the first bracket 11 with the pier 4, thereby increasing the stability of the first bracket 11, thereby further improving the stability of the electric hoist 102 in dragging the steel cap beam 5.

[0038] Reference Figure 4 , an installation opening 105 for pouring concrete is reserved on the first bracket 11, and a steel skeleton 106 is reserved in the installation opening 105 of the first bracket 11, and the end of the connecting frame 62 away from the first bracket 11 is fixedly connected to the steel skeleton 106; a plugging member for sealing the installation opening 105 is provided on the connecting frame 62; the plugging member includes a cover 7, and the cover 7 is sleeved on the connecting frame 62; before erecting the connecting frame 62, the worker first sleeves the cover 7 on the connecting frame 62, and then inserts the connecting frame 62 into the installation opening 105 and connects it with the internal steel skeleton 106, then pours concrete into the installation opening 105 to fix the steel skeleton 106, and finally slides the cover 7 on the connecting frame 62 to cover the installation opening 105. At the same time, the worker welds the connecting frame 62 and the outer plate 61, so as to stably connect the connecting frame 62 to the concrete pier 4.

[0039] The implementation principle of the sliding guide frame for dragging the bridge cap beam in the embodiment of the present application is as follows: first, a first bracket 11 and a second bracket 12 are constructed at a predetermined position, and the first bracket 11 is connected to the first bridge pier 4 through a connecting piece, and a stand 103 and an electric hoist 102 are arranged on each bracket body 1. Then, workers hoist the steel cap beam 5 onto the bracket body 1, and then tie the steel wire rope to the steel cap beam 5. The electric hoist 102 is started to drag the steel cap beam 5.

[0040] When it is dragged into place, the steel cap beam 5 is lifted by the jack 3 to remove the support block 101, and then the steel cap beam 5 is placed on the pier 4. Finally, the workers fix the steel cap beam 5 on the pier 4 to complete the construction.

[0041] 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 sliding guide frame for dragging construction of bridge cap beams, characterized in that: The invention comprises a pair of support bodies (1), a support block (101) and a jack (3); the support body (1) comprises a first support (11) and a second support (12), the first support (11) being located below an existing bridge, the second support (12) being located outside the existing bridge, and the two support bodies (1) being connected to a bridge pier (4) for use with the guide frame; the support block (101) is fixedly mounted on a cross frame at the top of each support body (1), the support block (101) being used to place a steel cap beam (5) for use with the guide frame, a plurality of pairs of support blocks (101) being provided, and each pair of support blocks (101) being arranged along the length direction of the steel cap beam (5); the jack (3) is fixedly mounted on the top of the support body (1), and the jack (3) is provided on one side of each support block (101).

2. The sliding guide frame for dragging construction of bridge cap beam according to claim 1 is characterized in that: Each of the support bodies (1) is hollow, the piers (4) include a first pier (4) and a second pier (4) corresponding to each of the support bodies (1), the first support (11) is located on a side of the first pier (4) close to the second support (12), the second support (12) is sleeved on the second pier (4), and a connecting component (6) is provided between the first support (11) and the first pier (4).

3. The sliding guide frame for dragging construction of bridge cap beam according to claim 2 is characterized in that: The connection assembly (6) comprises an outer covering plate (61) and a connection frame (62), wherein the outer covering plate (61) is sleeved on the first pier (4), and the connection frame (62) has one end fixedly connected to the first bracket (11) and the other end connected to the outer covering plate (61) on the first pier (4).

4. The sliding guide frame for dragging construction of bridge cap beam according to claim 3 is characterized in that: The first bracket (11) is provided with a mounting opening (105) for pouring concrete, the first bracket (11) is provided with a steel frame (106) in the mounting opening (105), and one end of the connecting frame (62) away from the first bracket (11) is fixedly connected to the steel frame (106); and a blocking member for blocking the mounting opening (105) is provided on the connecting frame (62).

5. The sliding guide frame for dragging construction of bridge cap beam according to claim 4 is characterized in that: The blocking member comprises a sealing cover (7), and the sealing cover (7) is sleeved on the connecting frame (62).

6. The sliding guide frame for dragging construction of bridge cap beam according to claim 2 is characterized in that: An electric hoist (102) is arranged on the first bracket (11), a steel wire rope is arranged on the electric hoist (102), and one end of the steel wire rope away from the electric hoist (102) is connected to the steel cap beam (5).

7. The sliding guide frame for dragging construction of bridge cap beam according to claim 1 is characterized in that: A polytetrafluoroethylene plate is arranged on the top of the support block (101).

8. The sliding guide frame for dragging construction of bridge cap beam according to claim 1 is characterized in that: A stand (103) is provided at the top of each bracket body (1) and on both sides of the steel cap beam (5) in the length direction, and a limit pulley (104) is provided on the side where the two stands (103) are close to each other, and the limit pulley (104) is used to abut against the side of the steel cap beam (5) along the length direction.

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