A large-displacement assembled damping multi-directional displacement comb-type bridge expansion device

Abstract

The present invention discloses a large-displacement assembled damping multi-directional displacement comb-type bridge expansion device, belonging to the technical field of bridge construction. It includes a fixed comb-type plate fixed on one beam body and a movable comb-type plate fixed on an adjacent beam body. The movable comb-type plate includes a fixed plate and a group of movable comb teeth arranged along the width direction of the beam body. The fixed comb teeth of the fixed comb-type plate are arranged crosswise with the movable comb teeth. The key lies in that: a corner reserved gap is left between each movable comb tooth and the fixed plate, and adjacent movable comb teeth are fixedly connected by means of a connecting plate. A group of metal plates arranged along the length direction of the beam body are fixed on the beam body below the movable comb-type plate, and corner high-damping bearings are arranged between adjacent metal plates. The fixed plate and the movable comb teeth are respectively fixedly connected to the metal plates below them. When an external force acts, the movable comb teeth can generate vertical and horizontal rotations in a timely manner, enabling vehicles to pass smoothly and safely.

Description

Technical Field

[0001] The present invention belongs to the technical field of bridge construction, relates to a bridge expansion device, and particularly relates to a large-displacement assembled damping multi-directional displacement comb-type plate bridge expansion device. Background Art

[0002] A bridge expansion joint is a structural joint provided on a bridge to prevent the bridge from cracking or being damaged due to climate temperature changes (thermal expansion and contraction), enabling the bridge to horizontally expand and contract along its length direction. A bridge expansion device is used to connect this structural joint. The bridge expansion device includes a fixed comb-type plate fixed on one beam body and a movable comb-type plate fixed on an adjacent beam body. The movable comb-type plate includes a fixing plate and a set of movable combs arranged along the width direction of the beam body. The fixed combs of the fixed comb-type plate are arranged in a cross manner with the movable combs. In the existing technology, the movable combs are fixed to the fixing plate. When an external force acts, the movable combs do not have space to generate vertical and horizontal rotations, which affects the smoothness and safety of vehicle driving. Summary of the Invention

[0003] In order to overcome the defects of the prior art, the present invention designs a large-displacement assembled damping multi-directional displacement comb-type plate bridge expansion device. When an external force acts, the movable combs can timely generate vertical and horizontal rotations, enabling vehicles to pass smoothly and safely.

[0004] The specific technical solution adopted by the present invention is as follows: A large-displacement assembled damping multi-directional displacement comb-type plate bridge expansion device includes a fixed comb-type plate fixed on one beam body and a movable comb-type plate fixed on an adjacent beam body. The movable comb-type plate includes a fixing plate and a set of movable combs arranged along the width direction of the beam body. The fixed combs of the fixed comb-type plate are arranged in a cross manner with the movable combs. The key lies in that: a rotation reserved gap is left between each movable comb and the fixing plate, adjacent movable combs are fixedly connected by means of a connecting plate, a set of metal plates arranged along the length direction of the beam body are fixed on the beam body below the movable comb-type plate, a rotation high-damping bearing is arranged between adjacent metal plates, the fixing plate and the movable combs are respectively fixedly connected with the metal plates below them, and all the metal plates and the rotation high-damping bearings are fixedly connected by means of horizontally arranged bearing fixing expansion bolts.

[0005] The width of the rotation reserved gap is 3 - 5 mm.

[0006] The metal plates and the rotation high-damping bearings are fixedly connected by means of at least two groups of bearing fixing expansion bolts arranged along the vertical direction, and all the bearing fixing expansion bolts in the same group are arranged along the width direction of the beam body.

[0007] The diameter of the bearing fixing expansion bolts is smaller than the aperture of the through holes opened on the metal plates for passing through the bearing fixing expansion bolts.

[0008] There are four metal plates arranged along the length direction of the beam body below the movable comb plate. Correspondingly, there are three corner high-damping bearings arranged along the length direction of the beam body below the movable comb plate. The reserved corner gap between the movable comb and the fixed plate is located at the center above the middle corner high-damping bearing.

[0009] Upper and lower anchor fittings are reserved in the beam body. The inner side surface of the innermost metal plate is welded and fixed to the upper anchor fitting located inside it, and its lower end surface is welded and fixed to the lower anchor fitting located below it. The remaining metal plates and all the corner high-damping bearings are fixedly connected to the innermost metal plate by means of support fixing expansion bolts. Rubber corner bodies are fixed at the bottoms of the remaining metal plates.

[0010] Both the fixed plate and the movable comb are fixedly connected to the metal plate located below them by means of the first fastening bolts arranged vertically.

[0011] A horizontal sliding plate is fixed below the fixed comb plate. The movable comb overlaps with the horizontal sliding plate and forms a sliding fit.

[0012] A horizontal positioning plate fixedly connected to the beam body is arranged below the fixed comb plate. The fixed comb plate is fixedly connected to the horizontal positioning plate located below it by means of the second fastening bolts arranged vertically.

[0013] A waterproof trough is fixed between two beam bodies.

[0014] The beneficial effects of the present invention are as follows: The fixed plate of the movable comb plate is separated from the movable comb. All the movable combs are fixed together by means of connecting plates. A reserved corner gap is left between each movable comb and the fixed plate. Metal plates and corner high-damping bearings are arranged below the movable comb plate. The fixed plate and the movable comb are both fixed to the metal plate. When an external force acts, the movable comb can generate vertical and horizontal corners in a timely manner, enabling the vehicle to pass smoothly and safely. The corner high-damping bearing can also effectively consume seismic energy and buffer the mutual collision force between the two beam bodies. Description of the Drawings

[0015] Figure 1 It is a schematic structural diagram of the present invention.

[0016] Figure 2 It is a top view of the fixed comb plate and the movable comb plate in the present invention.

[0017] Figure 3 It is Figure 1 a schematic connection structure diagram of the movable comb plate and the beam body in

[0018] Figure 4 It is Figure 3 an enlarged view of A in

[0019] In the attached drawings, 1 represents the beam body, 2 represents the fixed comb plate, 3 represents the fixed plate, 4 represents the movable comb teeth, 5 represents the reserved corner joint, 6 represents the connecting plate, 7 represents the metal plate, 8 represents the corner high-damping bearing, 9 represents the bearing fixing expansion bolt, 10 represents the upper anchor, 11 represents the lower anchor, 12 represents the first fastening bolt, 13 represents the horizontal sliding plate, 14 represents the horizontal positioning plate, 15 represents the second fastening bolt, 16 represents the waterproof groove, and 17 represents the rubber corner body. Specific embodiments

[0020] The present invention will be described in detail below with reference to the attached drawings and specific embodiments:

[0021] Specific embodiments, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a large-displacement assembled damping multi-directional displacement comb-type plate bridge expansion device includes a fixed comb plate 2 fixed on a beam body 1 and a movable comb plate fixed on an adjacent beam body 1. The movable comb plate includes a fixed plate 3 and a group of movable comb teeth 4 arranged along the width direction of the beam body 1. The fixed comb teeth of the fixed comb plate 2 are arranged in a cross pattern with the movable comb teeth 4. A reserved corner joint 5 is provided between each movable comb tooth 4 and the fixed plate 3. Adjacent movable comb teeth 4 are fixedly connected by means of a connecting plate 6. A group of metal plates 7 arranged along the length direction of the beam body 1 are fixed on the beam body 1 below the movable comb plate. A corner high-damping bearing 8 is provided between adjacent metal plates 7. The fixed plate 3 and the movable comb teeth 4 are respectively fixedly connected to the metal plate 7 below them. All the metal plates 7 and the corner high-damping bearings 8 are fixedly connected by means of horizontally arranged bearing fixing expansion bolts 9.

[0022] As a further improvement of the present invention, as shown in Figure 1 and Figure 3 The metal plates 7 and the corner high-damping bearings 8 are fixedly connected by means of at least two groups of bearing fixing expansion bolts 9 arranged vertically. All the bearing fixing expansion bolts 9 in the same group are arranged along the width direction of the beam body 1, making the overall firmness better. In the present invention, there are two groups of bearing fixing expansion bolts 9, one above the other.

[0023] The diameter of the bearing fixing expansion bolt 9 is smaller than the diameter of the through hole formed on the metal plate 7 for passing through the bearing fixing expansion bolt 9. This leaves a gap between the bearing fixing expansion bolt 9 and the metal plate 7, which can better meet the corner requirement. In the present invention, the difference between the diameter of the bearing fixing expansion bolt 9 and the diameter of the through hole on the metal plate 7 is 2 - 3 mm.

[0024] As a further improvement of the present invention, in order to better meet the corner requirement, as shown in Figure 1 and Figure 3As shown in the figure, four metal plates 7 are arranged along the length direction of the beam body 1 below the movable comb-tooth plate. Correspondingly, three corner high-damping bearings 8 are arranged along the length direction of the beam body 1 below the movable comb-tooth plate. The reserved corner gap 5 between the movable comb teeth 4 and the fixed plate 3 is located at the center above the middle corner high-damping bearing 8. The widths of the metal plates 7 and the corner high-damping bearings 8 (i.e., the lengths along the length direction of the beam body 1) are equal and are both 55 - 60 mm, and the heights of the metal plates 7 and the corner high-damping bearings 8 are also equal and are both 145 - 155 mm.

[0025] As a further improvement of the present invention, upper anchor fittings 10 and lower anchor fittings 11 are reserved in the beam body 1. The inner side surface of the innermost metal plate 7 is welded and fixed to the upper anchor fitting 10 located inside it, and its lower end surface is welded and fixed to the lower anchor fitting 11 located below it. The structure is simple, and the connection is firm and reliable. The remaining metal plates 7 and all the corner high-damping bearings 8 are fixedly connected to the innermost metal plate 7 by means of support fixing expansion bolts 9. Rubber corner bodies 17 are fixed to the bottoms of the remaining metal plates 7. As Figure 1 、 Figure 3 and Figure 4 shown, the left side surface of the leftmost metal plate 7 is welded and fixed to the upper anchor fitting 10, and the lower end surface is welded and fixed to the lower anchor fitting 11. The three metal plates 7 and the three corner high-damping bearings 8 on the right side are fixed together with the leftmost metal plate 7 by using the upper and lower layers of corner high-damping bearings 8, which is simpler and more convenient during installation. Rubber corner bodies 17 are fixed to the bottoms of the three metal plates 7 on the right side. By arranging the rubber corner body 17 with a middle part sunken downward between the beam body 1 and the metal plate 7, the impact force generated by the metal plate 7 on the beam body 1 during vertical cornering can be reduced.

[0026] As a further improvement of the present invention, as Figure 1 and Figure 3 shown, both the fixed plate 3 and the movable comb teeth 4 are fixedly connected to the metal plate 7 below them by means of vertically arranged first fastening bolts 12. The structure is simple, the connection is firm and reliable, and the disassembly and assembly are convenient, fast, time-saving and labor-saving. In the present invention, both the fixed plate 3 and the movable comb teeth 4 are respectively connected to the metal plate 7 by two groups of first fastening bolts arranged along the length direction of the beam body 1. All the first fastening bolts 12 in the same group of first fastening bolts are arranged along the width direction of the beam body 1.

[0027] As a further improvement of the present invention, a horizontal sliding plate 13 is fixed below the fixed comb-tooth plate. The movable comb teeth 4 overlap with the horizontal sliding plate 13 and form a sliding fit, making the movable comb teeth 4 more stable and labor-saving when generating a corner.

[0028] As a further improvement of the present invention, as Figure 1As shown in the figure, a horizontal positioning plate 14 fixedly connected to the beam body 1 is arranged below the fixed comb tooth plate 2. The fixed comb tooth plate 2 is fixedly connected to the horizontal positioning plate 14 below it by means of vertically arranged second fastening bolts 15. The structure is simple, the connection is firm and reliable, the disassembly and assembly are convenient and fast, saving time and effort. In the present invention, the fixed comb tooth plate 2 is connected to the beam body 1 by means of three groups of second fastening bolts arranged along the length direction of the beam body 1, and all the second fastening bolts 15 in the same group of second fastening bolts are arranged along the width direction of the beam body 1. In order to make the connection more firm and reliable, an anchoring component is preset on the beam body 1, and the lower end of the horizontal positioning plate 14 is fixedly welded to the anchoring component.

[0029] As a further improvement of the present invention, a waterproof groove 16 is fixed between the two beam bodies 1. If water leaks under the fixed comb tooth plate 2 and / or the movable comb tooth plate, the water can be drained to both sides of the beam body 1 along the waterproof groove 16, avoiding water staying in the expansion device and causing erosion, corrosion and other damages to the relevant components.

[0030] When the present invention is specifically used, as Figure 1 shown, the two beam bodies 1 are arranged in the left-right direction, the horizontal distance between the two beam bodies 1 is 450 mm, the fixed comb tooth plate 2 is fixedly connected to the right beam body 1, the length of the fixed comb tooth plate 2 in the left-right direction is set to 990 mm, the length of the horizontal sliding plate 13 in the left-right direction is equal to the length of the fixed comb tooth plate 2, the end faces at the left and right ends of the horizontal sliding plate 13 are flush with the corresponding end faces of the fixed comb tooth plate 2, and the thickness of the horizontal sliding plate 13 is 1-3 mm and preferably 2 mm. The horizontal positioning plate 14 is located below the horizontal sliding plate 13, the length of the horizontal positioning plate 14 in the left-right direction is less than the length of the fixed comb tooth plate 2 and preferably 770 mm, the right end face of the horizontal positioning plate 14 is flush with the right end face of the fixed comb tooth plate 2, the thickness of the horizontal positioning plate 14 in the vertical direction is 49 mm, and the horizontal positioning plate 14 is fixedly welded to the anchoring component embedded in the beam body 1.

[0031] The left end of the movable comb tooth 4 and the fixing plate 3 are both fixedly connected to the left beam body 1, and the right end of the movable comb tooth 4 is placed on the horizontal sliding plate 13 and is located on the right side of the left end face of the horizontal positioning plate 14. In order to ensure that all the movable comb teeth 4 are firmly fixed together, the upper and lower end faces of the connecting plate 6 are flush with the upper and lower end faces of the movable comb tooth 4 respectively, the length of the connecting plate 6 in the left-right direction is set to 240-260 mm and preferably 250 mm, and the right end of the connecting plate 6 protrudes outside the beam body 1, so that the road surface water is easy to fall into the waterproof groove 16 and will not directly wash the corner high-damping bearing 8 below.

[0032] The upper and lower end faces of the metal plate 7 and the corner high-damping bearing 8 are flush. The widths of the metal plate 7 and the corner high-damping bearing 8 in the left-right direction are equal. The height of the metal plate 7 in the vertical direction is 150 mm, and the width of the metal plate 7 in the left-right direction is 57.71 mm. The width of the corner reserved joint 5 in the left-right direction is 3 - 5 mm, preferably 4 mm.

[0033] When an external force acts, the movable comb teeth 4 can generate vertical and horizontal rotations in a timely manner. The maximum vertical and horizontal rotations can both reach 0.025 rad, enabling the vehicle to pass smoothly and safely. The corner high-damping bearing 8 can also effectively dissipate seismic energy and buffer the mutual collision force between the two girders 1. It is applicable to the expansion and contraction amount range of 560 - 1500 mm.

Claims

1. A large-displacement assembled damping multi-directional displacement comb-type plate bridge expansion device, comprising a fixed comb-type plate (2) fixed on a beam body (1), and a movable comb-type plate fixed on an adjacent beam body (1). The movable comb-type plate includes a fixed plate (3) and a group of movable comb teeth (4) arranged along the width direction of the beam body (1). The fixed comb teeth of the fixed comb-type plate (2) are arranged in a crossed manner with the movable comb teeth (4). Characterized in that: A corner reserved gap (5) is left between each movable comb tooth (4) and the fixed plate (3). Adjacent movable comb teeth (4) are fixedly connected by means of a connecting plate (6). A group of metal plates (7) arranged along the length direction of the beam body (1) are fixed on the beam body (1) below the movable comb-type plate. A corner high-damping bearing (8) is arranged between adjacent metal plates (7). The fixed plate (3) and the movable comb teeth (4) are respectively fixedly connected to the metal plate (7) below them. All the metal plates (7) and the corner high-damping bearings (8) are fixedly connected by means of horizontally arranged bearing fixed expansion bolts (9). Upper anchor fittings (10) and lower anchor fittings (11) are reserved in the beam body (1). The inner side surface of the innermost metal plate (7) is welded and fixed to the upper anchor fitting (10) inside it, and its lower end surface is welded and fixed to the lower anchor fitting (11) below it. The remaining metal plates (7) and all the corner high-damping bearings (8) are fixedly connected to the innermost metal plate (7) by means of bearing fixed expansion bolts (9). Rubber corner bodies (17) are fixed at the bottoms of the remaining metal plates (7).

2. A large-displacement assembled damping multi-directional displacement comb-type plate bridge expansion device according to claim 1, Characterized in that: The width of the corner reserved gap (5) is 3-5 mm.

3. A large-displacement assembled damping multi-directional displacement comb-type plate bridge expansion device according to claim 1, Characterized in that: The metal plates (7) and the corner high-damping bearings (8) are fixedly connected by means of at least two groups of bearing fixed expansion bolts (9) arranged vertically. All the bearing fixed expansion bolts (9) in the same group are arranged along the width direction of the beam body (1).

4. A large-displacement assembled damping multi-directional displacement comb-type plate bridge expansion device according to claim 1, Characterized in that: The diameter of the bearing fixed expansion bolt (9) is smaller than the aperture of the through hole opened on the metal plate (7) for passing through the bearing fixed expansion bolt (9).

5. A large-displacement assembled damping multi-directional displacement comb-type plate bridge expansion device according to claim 1, Characterized in that: Four metal plates (7) are arranged along the length direction of the beam body (1) below the movable comb-type plate. Correspondingly, three corner high-damping bearings (8) are arranged along the length direction of the beam body (1) below the movable comb-type plate. The corner reserved gap (5) between the movable comb teeth (4) and the fixed plate (3) is located at the center above the middle corner high-damping bearing (8).

6. A large-displacement assembled damping multi-directional displacement comb-type plate bridge expansion device according to claim 1, Characterized in that: The fixed plate (3) and the movable comb teeth (4) are both fixedly connected to the metal plate (7) below them by means of the first fastening bolts (12) arranged vertically.

7. A large-displacement assembled damping multi-directional displacement comb-type plate bridge expansion device according to claim 1, characterized in that: A horizontal sliding plate (13) is fixed below the fixed comb tooth plate, and the movable comb teeth (4) are lapped with the horizontal sliding plate (13) to form a sliding fit.

8. A large-displacement assembled damping multi-directional displacement comb-type plate bridge expansion device according to claim 1, characterized in that: A horizontal positioning plate (14) fixedly connected to the beam body (1) is arranged below the fixed comb tooth plate (2), and the fixed comb tooth plate (2) is fixedly connected to the horizontal positioning plate (14) below it by means of the second fastening bolts (15) arranged vertically.

9. A large-displacement assembled damping multi-directional displacement comb-type plate bridge expansion device according to claim 1, characterized in that: A waterproof groove (16) is fixed between the two beam bodies (1).

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