CN210975519U

CN210975519U - Multidirectional deflection-resistant comb-tooth-shaped bridge expansion joint device

Info

Publication number: CN210975519U
Application number: CN201921296652.9U
Authority: CN
Inventors: 安平生; 宋新虎
Original assignee: Hengshui Shengdi Transportation Facilities Technology Co ltd
Current assignee: Hengshui Shengdi Transportation Facilities Technology Co ltd
Priority date: 2019-08-12
Filing date: 2019-08-12
Publication date: 2020-07-10
Anticipated expiration: 2029-08-12

Abstract

The utility model belongs to the expansion joint field of bridge discloses an anti multidirectional broach type bridge expansion joint device that shifts, including the first roof beam body and the second roof beam body that are located bridge seam both sides, be equipped with the movable fishback of striding the seam on the first roof beam body, be equipped with fixed fishback on the second roof beam body, this movable fishback is equipped with intercrossing spaced broach with fixed fishback's relative tip, wherein, activity fishback bottom is provided with an elastic backing plate, and the fixed major axis that is provided with in elastic backing plate below, two tip quilt cover of this major axis connect in supporting the base, wherein, supporting the base by all set up semicircular groove, and the first base and the second base that distribute from top to bottom are to closing and form, two semicircular groove supply to the hole that forms the major axis runs through. The utility model provides an expansion joint device when the roof beam body leads to the bridge to take place vertically, slant and wrench movement to warp because of external force factors such as wind-force, still can keep smooth gesture, and can reduce damping and noise.

Description

Multidirectional deflection-resistant comb-tooth-shaped bridge expansion joint device

Technical Field

The utility model relates to a bridge expansion joint technical field especially relates to a comb tooth type bridge expansion joint device that can play anti multidirectional shifting.

Background

In order to meet the requirement of two-dimensional deformation of the bridge, a bridge expansion joint device is generally arranged between two beam ends of the bridge, between the beam end and an abutment or on the hinged position of the bridge. Among the present bridge expansion joint device, adopt fixed fishback and movable fishback complex broach type telescoping device to be better one, especially great at flexible volume, for example in the large-scale bridge more than 200 millimeters, because its concertina movement is accomplished by arranging the movable fishback on the bridge expansion joint in, no longitudinal transition clearance, and with the bridge floor, the road surface connects into a whole, consequently the shock resistance can be good, the vehicle is gone steadily, it is comfortable, effectively avoided the appearance of jumping, make the vehicle smooth-going, drive over comfortably.

However, in some special cases, such as suspension bridges and cable-stayed bridges, the beam body may be displaced longitudinally and vertically under the action of the vehicle load and air temperature, and may also have horizontal corners and torsional deformation under the action of other factors, such as wind force, and in addition, some vibration noise may be caused when the vehicle passes through the expansion joint.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an anti multidirectional comb tooth type bridge expansion joint device that shifts to when the roof beam body leads to the bridge to take place vertically and wrench movement to warp because of external force factors such as wind-force under, still can keep smooth gesture, and reduce the vibration noise.

The utility model discloses a scheme as follows:

the utility model provides an anti multidirectional broach type bridge expansion joint device that shifts, is provided with the activity fishback of striding the seam on the first roof beam body and the second roof beam body including being located the first roof beam body and the second roof beam body of bridge seam both sides, be provided with fixed fishback on the second roof beam body, and this activity fishback is equipped with the broach that intercrossing interval set up with the relative tip of fixed fishback, wherein, activity fishback bottom is fixed and is provided with an elastic backing plate, and the elastic backing plate below is fixed and is provided with a major axis, and two tip of this major axis are cup jointed in offering the support base that has the round hole. The movable comb plate can twist around the support base in a small range through the long shaft, and the elastic cushion plate is arranged to provide a moving space when the movable comb plate rotates relative to the support base.

In order to better play a supporting role, one or more supporting bases can be arranged in the middle of the long shaft, the long shaft penetrates through the through hole of the supporting bases, and correspondingly, a plurality of notches are formed in the movable comb plate to accommodate the supporting bases.

In order to facilitate assembly, the supporting base comprises a first base and a second base, wherein semicircular grooves are formed in the first base and the second base, and the two semicircular grooves are combined to form the round hole for the long shaft to penetrate through. During assembly, the second base can be assembled firstly, the first base is assembled after the long shaft is arranged in the semicircular groove of the second base, and then the second base and the first base are fixed.

And a fastening screw is arranged downwards from the fixed comb plate, penetrates through the elastic base plate and is connected with the long shaft, and correspondingly, a threaded hole is formed in the long shaft.

The part of the long shaft sleeved with the supporting base is circular, so that the rotation is convenient, the top surface of the long shaft which is not sleeved with the supporting base is a tangent plane, and the tangent plane is arranged for conveniently drilling a threaded hole and fixing.

The comb teeth are provided with arc smooth end parts, and the end parts are mutually interfered when the comb teeth rotate or twist.

The first base and the second base are fixed through fastening screws, and the first base and the second base are adhered through adhesive materials.

The fastening screw is lined with a spring pad, the spring pad is arranged to meet the vertical deformation requirement when the movable comb plate rotates relative to the supporting base, and the spring pad is required to be arranged on the fastening screw connected with the long shaft.

And a damping shock absorption layer is also arranged below the supporting base and is partially buried in the concrete to play roles of vibration isolation, damping consumption and the like.

Compared with the prior art, the utility model provides an anti multidirectional comb tooth type bridge expansion joint device that shifts, its movable fishback designs into to rotate around the base through the major axis for when the skew takes place for the roof beam body, take place to rotate between movable fishback and the roof beam body, make movable fishback keep smooth gesture, avoid whole expansion joint consequently and arouse the damage, guarantee that the vehicle passes through smoothly, in addition, through setting up the damping buffer layer, can, subdue the disturbing force of bridge vibration, damping and the noise that the reduction vibration produced.

Drawings

Fig. 1 is a schematic view of the overall structure of the comb-tooth-shaped bridge expansion joint device for resisting multi-directional displacement in the embodiment of the present invention.

Fig. 2 is a schematic structural diagram of the first beam in the embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a long shaft in an embodiment of the present invention.

FIG. 4 is a sectional view of the supporting base according to the embodiment of the present invention

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail with reference to the accompanying drawings. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Referring to fig. 1 to 4, a comb-tooth-shaped bridge expansion joint device for resisting multidirectional displacement provided by an embodiment of the present invention includes a first beam body 1 and a second beam body 2 located at two sides of a bridge joint, a water stop is disposed in the expansion joint, a movable comb-tooth plate 11 spanning the joint is disposed on the first beam body 1, that is, the movable comb-tooth plate 11 on the first beam body 1 extends to the upper surface of one side of the second beam body 2 through the expansion joint, a fixed comb-tooth plate 21 is disposed on the second beam body 2, comb teeth 3 are disposed at a first end of the movable comb-tooth plate 11, comb teeth 3 are disposed at a first end of the fixed comb-tooth plate 21 opposite to the movable comb-tooth plate 11, and are intersected and spaced, that is, each comb tooth is inserted into the comb-tooth joint of the other side, each comb tooth 3 can be movably hinged in a circular tooth groove close to the first end of the movable comb-tooth plate 11 by a circular pin shaft, the comb teeth 3 can be rectangular, the long strip trapezoids or the ends of the comb teeth are in the shape of smooth arcs, so that the ends of adjacent comb plates can be prevented from mutually resisting and interfering when rotating. Wherein, the fixed elastic backing plate 12 that is provided with in activity fishback 11 bottom, elastic backing plate 12 are located activity fishback 11 second end bottom, and the second end is relative first end, and elastic backing plate 12 below is fixed and is provided with a major axis 13, and two tip of major axis 13 are cup jointed in the support base 14 of seting up the round through-hole, and two outsides of the first roof beam body 1 are provided with the breach with the holding support base 14. The movable comb plate 11 can twist around the support base 14 in a small range through the long shaft 13, the elastic cushion plate 12 can be a rubber elastic cushion plate 12 commonly used in the existing railway, the rubber elastic cushion plate 12 has high strength and has a small amount of elasticity, and the elastic cushion plate 12 is arranged to provide a movement space when the movable comb plate 11 rotates relative to the support base 14 and the first beam body 1 and has a partial damping effect. According to the design, when the first beam body 1 is longitudinally and torsionally deformed, the movable comb plate 11 can be changed relative to the first beam body 1, so that the movable comb plate 11 keeps a flat posture, a vehicle can smoothly pass through the movable comb plate, and obvious bridge vibration noise is avoided.

In order to better support, one or more supporting bases 14 may be disposed at an interval in the middle of the long shaft 13, the long shaft 13 is disposed in through holes of the supporting bases 14, and correspondingly, the movable comb plate 11 is provided with a plurality of notches to accommodate the supporting bases 14. The supporting base 14 is an integrally formed rectangular parallelepiped, fixed on the table-board below the first beam 1, and has a circular through hole 143 on the same axis for the long shaft 13 to pass through.

A fastening screw is arranged downwards from the fixed comb plate 21, the fastening screw passes through the elastic backing plate 12 and is connected with the long shaft 13, correspondingly, a threaded hole 132 is formed in the long shaft 13, so that the fixed comb plate 21, the elastic backing plate 12 and the long shaft 13 are fixed, and when the movable comb plate 11 acts, the long shaft 13 is driven to rotate around the support base 14.

For convenience of rotation, the part of the long shaft 13, which is sleeved with the supporting base 14, is circular, so that rotation is facilitated, the top surface of the long shaft 13, which is not sleeved in the supporting base 14, is the tangent plane 131, the other surfaces are still circular arc surfaces, the tangent plane is arranged for convenience of screwing holes, and the tangent plane 131 can be flush with the cylindrical surfaces of the other surfaces of the long shaft 13.

For convenience of assembly, in this embodiment, the supporting base 14 includes a first base 141 and a second base 142, wherein the first base 141 and the second base 142 are both provided with a semicircular groove, and the two semicircular grooves are paired to form a circular hole 143 for the long shaft 13 to pass through. The first base 141 and the second base 142 are fixed by a fastening screw 144, and the contact surfaces of the first base 141 and the second base 142 can also be fastened by adhesion of an adhesive material. The long shaft not supported by the supporting base 14 can also be provided with a strip-shaped bracket with a semicircular groove surface below the long shaft, and the strip-shaped bracket is flush with the bottom end surface of the supporting base. Alternatively, other portions of the long axis not supported by the base 14 are filled with damping material, such as rubber particles, wherein the filled material should not block rotation of the long axis.

The fastening screws connected with the long shaft 13 or the fastening screws connected with the base below the supporting base 14 are lined with spring pads, and the spring pads are arranged to meet the vertical deformation requirement when the movable comb plate 11 rotates relative to the supporting base 14.

The first beam body 1 is provided with an L-shaped cross section, a damping shock-absorbing layer 15 is further arranged below the supporting base 14, namely below the second base 142, the damping shock-absorbing layer 15 is partially embedded in concrete on the cross section, the damping shock-absorbing layer 15 can be made of rubber materials with high hardness and density, and the damping shock-absorbing layer is arranged to ensure the effects of vibration isolation, damping consumption and the like when the expansion joint vibrates in the using process, the supporting base 14 is positioned above the damping shock-absorbing layer, a groove for accommodating the supporting base 14 can be formed in the upper surface of the damping shock-absorbing layer 15 and is fixedly poured, or a groove for accommodating a part of a long shaft which is not supported by the supporting base 14 is formed, a part of the second base 142 of the supporting base 14 is positioned in the groove, and the second base 142 and the damping shock-absorbing layer 15 can be fixed through fastening screws embedded in the concrete.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides an anti multidirectional broach type bridge expansion joint device that shifts, is provided with the activity fishback of striding the seam on the first roof beam body and the second roof beam body including being located the first roof beam body and the second roof beam body of bridge seam both sides, is provided with fixed fishback on the second roof beam body, and this activity fishback is equipped with the broach that intercrossing interval set up with the relative tip of fixed fishback, its characterized in that, activity fishback bottom is provided with an elastic backing plate, and the elastic backing plate below is fixed to be provided with a major axis, and two tip of this major axis are cup jointed in supporting the base, wherein, supporting the base and closing by the first base and the second base that all set up semicircular groove and distribute from top to bottom and form, two semicircular groove supply to the hole that forms the major axis runs through.

2. The comb-tooth bridge expansion joint device according to claim 1, wherein one or more support bases for supporting the long shaft are also provided at the middle of the long shaft.

3. The comb-tooth-type bridge expansion joint device according to claim 2, wherein a fastening screw is provided downward from the fixed comb plate, the fastening screw passes through the elastic pad and is connected with the long shaft, and a threaded hole is provided on the long shaft.

4. The expansion joint apparatus according to claim 3, wherein the portion of the long shaft on which the supporting base is fitted is cylindrical, and the top surface of the long shaft on which the supporting base is not fitted is a tangential surface.

5. The comb-tooth-type bridge expansion joint device according to claim 1 or 2, wherein the comb teeth each have rounded ends in an arc shape.

6. The comb-tooth bridge expansion joint device according to claim 1 or 2, wherein a damping layer is further disposed under the supporting base, and the damping layer is partially buried in concrete.

7. The comb-tooth-type bridge expansion joint device according to claim 3, wherein the movable comb plate and the elastic pad plate are provided with openings at both sides and at the middle part thereof to accommodate the support base.

8. The comb-tooth-shaped bridge expansion joint device according to claim 1, wherein the first base and the second base are fixed by fastening screws, and the surfaces of the first base and the second base which are in contact with each other are adhered by an adhesive material.

9. The comb-tooth bridge expansion joint arrangement of claim 8, wherein said fastening screws are lined with spring washers.