CN218989879U - Comb plate type bridge expansion device - Google Patents

Abstract

The utility model relates to the technical field of bridge protection, in particular to a comb plate type bridge expansion device which comprises a fixed plate and a movable plate, wherein one side of the fixed plate is fixedly connected with a plurality of first comb teeth, one side of the movable plate is fixedly connected with a plurality of second comb teeth, the fixed plate is fixedly connected with the top of an upper lining plate, the bottom of the upper lining plate is fixedly connected with a bottom plate, the top of the bottom plate is fixedly connected with a plurality of sliding rails, the tops of the sliding rails are provided with sliding assemblies, the improved bridge expansion device limits sliding blocks through the matching of the sliding rails and the upper lining plate, vertical dislocation of the first comb teeth and the second comb teeth under the working condition of uneven displacement can be effectively avoided, the phenomenon that comb teeth are tilted is avoided, meanwhile, the phenomenon that the front ends of the second comb teeth enter the comb teeth to influence normal sliding of the expansion device is avoided, and the slope structure of the front ends of the second comb teeth is convenient to clean up the waste in the tooth gaps.

Description

Comb plate type bridge expansion device

Technical Field

The utility model relates to the technical field of bridge protection, in particular to a comb plate type bridge expansion device.

Background

The bridge is a structure which is generally erected on rivers, lakes and seas and can smoothly pass vehicles, pedestrians and the like, is also extended to be a structure which is erected to span mountain, poor geology or meet other traffic requirements and is more convenient to pass, and the bridge is generally composed of an upper structure, a lower structure, a support and an accessory structure, wherein the upper structure is also called a bridge span structure and is a main structure for crossing obstacles; the lower structure comprises a bridge abutment, a bridge pier and a foundation; the support is a force transmission device arranged at the supporting position of the bridge span structure and the bridge pier or the bridge abutment; the auxiliary structure is bridge end butt strap, cone slope protection, bank protection, diversion engineering, etc.

The bridge is displaced and connected between the upper structures caused by vehicle load and bridge building materials in the long-term use process, so that bridge sections are mutually close to or far away from each other, at the moment, the bridge expansion device is required to be used for adjustment, and the bridge expansion device is a device which is usually arranged between two beam ends, between the beam ends and a bridge abutment or at the junction position of the bridge and can be used for avoiding the upper structures of the bridge from obviously displacing and damaging under the actions of factors such as vehicle load, temperature change, concrete shrinkage deformation and the like, and can freely expand and contract, and damage and diseases with different degrees can occur in the use process, so that not only the driving comfort degree and the safety are reduced, but also certain economic loss and the operation cost loss of a traffic channel are caused.

The prior patent (publication number: CN 215714591U) discloses a comb-type bridge expansion joint device, which comprises a first comb plate and a second comb plate which can longitudinally and relatively move, and is characterized in that: the comb teeth of the first comb plate are provided with sliding grooves on the side walls, the sliding grooves are horizontally distributed along the length direction of the comb teeth, the side walls of the comb teeth of the second comb plate are outwards protruded and provided with limiting pieces, and the limiting pieces extend into the sliding grooves and can longitudinally slide relative to the sliding grooves, so that the comb teeth of the second comb plate have the advantages that: this broach formula bridge expansion joint device is through seting up vertical spout on the broach lateral wall of first broach board, and the locating part of installing on the broach lateral wall of second broach board can stretch into in the vertical spout, and when expansion joint device carries out longitudinal displacement, the locating part carries out relative movement along vertical spout to can be with first broach board and second broach board spacing all the time in horizontal position, avoid taking place the broach board phenomenon of upwarping and influence driving safety. The inventors found that the following problems exist in the prior art in the process of implementing the present utility model: 1. in the scheme, the sliding groove is required to be formed in the side wall of the first comb plate by the anti-warping tooth system, after the sliding groove is formed in the side wall of the comb plate, the whole strength of the telescopic device can be reduced due to the fact that the sliding groove part reduces the thickness of the comb teeth, the first design principle of safety and reliability of the main body of the telescopic device cannot be achieved, the limiting block in the anti-warping tooth system can only displace in the direction of the comb teeth in the sliding groove, no special vertical displacement structure exists, the vertical corner displacement of the telescopic device cannot be achieved, and the corner and displacement design requirements in a project main bridge constraint system cannot be met; 2. the problem of preventing the telescoping device broach from upwarping is not fundamentally solved, when the bridge appears multi-direction shifting, and bridge floor rubbish, grit get into the broach clearance, the inhomogeneous clearance phenomenon that the broach appears extremely leads to the stopper to slide out from the spout easily, causes the telescoping device function to be obstructed, appears the broach crooked, the dead phenomenon in top even, does not accord with the basic requirement of telescoping device safety and durability.

Disclosure of Invention

The utility model aims to provide a comb plate type bridge expansion device, which aims to solve the problem that the whole strength of the existing comb plate type bridge expansion device is low in the background technology; and the problems of low safety coefficient and poor durability of the existing telescopic device. In order to achieve the above purpose, the present utility model provides the following technical solutions: the comb plate type bridge expansion device comprises a fixed plate and a movable plate, wherein one side of the fixed plate is fixedly connected with a plurality of first comb teeth, one side of the movable plate is fixedly connected with a plurality of second comb teeth, the fixed plate is fixedly connected with the top of an upper lining plate, the bottom of the upper lining plate is fixedly connected with a bottom plate, the top of the bottom plate is fixedly connected with a plurality of sliding rails, the top of the sliding rails is provided with a sliding assembly, and the bottom plate is fixedly connected with the top of a bridge girder body;

the sliding assembly comprises sliding balls movably connected to the top of the sliding rail, the sliding balls are movably connected to two sides of the bottom of the sliding block, and the top of the sliding block is movably connected with a mounting nut.

Further preferably, a plurality of sliding grooves are formed in the top of the upper lining plate, and sliding blocks are connected in the sliding grooves in a sliding mode.

Further preferably, the sliding block is connected with the second comb teeth through a mounting nut.

Further preferably, a plurality of supporting boxes are arranged between the sliding rail and the upper lining plate, and the internal size structure of the supporting boxes is consistent with the external size structure of the sliding block.

Further preferably, the front ends of the second comb teeth and one side of the fixing plate, which is close to the second comb teeth, are both of a slope type design.

Further preferably, the first comb teeth and the second comb teeth are distributed in a staggered manner.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the sliding rail is matched with the upper lining plate to limit the sliding block, so that vertical dislocation of the first comb teeth and the second comb teeth under the working condition of uneven deflection can be effectively avoided, and further the phenomenon of comb teeth warping is avoided.

According to the utility model, the expansion of the bridge expansion device is realized through the cooperation among the sliding rail, the upper lining plate, the bottom plate and the sliding rail, the front ends of the second comb teeth and one side of the fixed plate, which is close to the second comb teeth, are of a slope type design, sundries such as garbage and the like can be cleaned out of the comb tooth gaps along with expansion displacement, great convenience is brought to the use and maintenance of the expansion device, and the influence of the sliding of the expansion device caused by the entrance of bridge floor garbage, sand and the like into the comb tooth gaps is avoided.

Drawings

FIG. 1 is a schematic top view of the present utility model;

FIG. 2 is a schematic side sectional view of the present utility model;

FIG. 3 is a schematic side view of the slip assembly of the present utility model;

fig. 4 is a schematic view of a partial side sectional structure of the present utility model.

In the figure: 1. a fixing plate; 2. a movable plate; 3. a first comb tooth; 4. a second comb tooth; 5. an upper lining plate; 6. a bottom plate; 7. a slide rail; 8. a slip assembly; 801. sliding balls; 802. a slide block; 803. installing a nut; 9. bridge girder body.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which are obtained by a worker of ordinary skill in the art without creative efforts, are within the protection scope of the present utility model based on the embodiments of the present utility model.

Referring to fig. 1 to 4, the present utility model provides a technical solution: the comb plate type bridge expansion device comprises a fixed plate 1 and a movable plate 2, wherein one side of the fixed plate 1 is fixedly connected with a plurality of first comb teeth 3, one side of the movable plate 2 is fixedly connected with a plurality of second comb teeth 4, the fixed plate 1 is fixedly connected with the top of an upper lining plate 5, the bottom of the upper lining plate 5 is fixedly connected with a bottom plate 6, the top of the bottom plate 6 is fixedly connected with a plurality of sliding rails 7, the top of the plurality of sliding rails 7 is provided with a sliding assembly 8, and the bottom plate 6 is fixedly connected with the top of a bridge girder 9;

the sliding component 8 comprises sliding balls 801 movably connected to the top of the sliding rail 7, the sliding balls 801 are movably connected to two sides of the bottom of the sliding block 802, and the top of the sliding block 802 is movably connected with a mounting nut 803.

In this embodiment, as shown in fig. 1, a plurality of sliding grooves are formed in the top of the upper liner 5, and sliding blocks 802 are slidably connected in the sliding grooves; the sliding block 802 can slide along the sliding groove, so that the sliding block 802 is prevented from shifting in the sliding process.

In this embodiment, as shown in fig. 2 and 3, the slider 802 is connected to the second comb teeth 4 through the mounting nut 803; the sliding balls 801 at the bottom of the sliding block 802 can reduce the friction force of the second comb teeth 4 when moving, so that the movement is more smooth.

In this embodiment, as shown in fig. 2, a plurality of supporting boxes are arranged between the sliding rail 7 and the upper lining board 5, and the internal size structure of the supporting boxes is consistent with the external size structure of the sliding block 802; the supporting box can limit the sliding block 802 at the same time, and the structure can effectively avoid vertical dislocation of the first comb teeth 3 and the second comb teeth 4 under the working condition of uneven deflection, so that the phenomenon of comb teeth warping teeth is avoided.

In this embodiment, as shown in fig. 4, the front end of the second comb teeth 4 and the side of the fixing plate 1 near the second comb teeth 4 are both designed in a slope manner; can clear up the comb gap with debris such as rubbish along with flexible displacement, bring very big convenience to the use maintenance of telescoping device, avoid bridge floor rubbish, grit etc. to get into comb gap and influence telescoping device's slip.

In this embodiment, as shown in fig. 1, a plurality of first comb teeth 3 and a plurality of second comb teeth 4 are distributed in a staggered manner; can make first broach 3 and second broach 4 insert each other in the gap of counterparty, when the skew of horizontal direction takes place for the bridge, first broach 3 and second broach 4 can remove the flexible along the broach direction, avoid the superstructure of bridge to take place obvious displacement under the effect of factors such as vehicle load, temperature variation and concrete shrink to destroy.

The application method and the advantages of the utility model are as follows: when the comb plate type bridge expansion device is wound, the working process is as follows:

as shown in fig. 1, fig. 2, fig. 3 and fig. 4, first install this bridge telescoping device on the handing-over position of bridge between two beam ends, between beam end and the abutment, when the bridge takes place to stretch out and draw back because of factors such as vehicle load, temperature variation and concrete shrink deformation, can drive first broach 3 and second broach 4 and remove the flexible along the broach direction, avoid the bridge floor of bridge to warp or appear the crack because of stretching, and when second broach 4 removes, can drive the slider 802 of bottom through the installation nut 803, and slider 802 slides along slide rail 7 through the sliding ball 801 of bottom, the frictional force between slider 802 and the slide rail 7 has been reduced, make second broach 4 more silk-like when removing, and be equipped with the supporting box between upper liner plate 5 and the bottom plate 6, and slider 802 is located the supporting box, the supporting box can carry out spacing to slider 802, and then avoid appearing the vertical dislocation of first broach 3 and second broach 4 under the operating mode of uneven deflection, and then the second broach 4 is close to the design and can be used to the flexible device of clearance with the clearance of the second comb 4, the clearance is avoided bringing the flexible device with the clearance of the tooth that the second comb 4 is close to the fixed to the bridge floor, etc.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (6)

1. The utility model provides a fishback formula bridge telescoping device, includes fixed plate (1) and fly leaf (2), its characterized in that: one side of the fixed plate (1) is fixedly connected with a plurality of first comb teeth (3), one side of the movable plate (2) is fixedly connected with a plurality of second comb teeth (4), the fixed plate (1) is fixedly connected with the top of the upper lining plate (5), the bottom of the upper lining plate (5) is fixedly connected with a bottom plate (6), the top of the bottom plate (6) is fixedly connected with a plurality of sliding rails (7), the top of the plurality of sliding rails (7) is provided with a sliding assembly (8), and the bottom plate (6) is fixedly connected with the top of the bridge girder body (9);

the sliding assembly (8) comprises sliding balls (801) movably connected to the top of the sliding rail (7), the sliding balls (801) are movably connected to two sides of the bottom of the sliding block (802), and the top of the sliding block (802) is movably connected with a mounting nut (803).

2. The comb plate type bridge telescoping device according to claim 1, wherein: a plurality of sliding grooves are formed in the top of the upper lining plate (5), and sliding blocks (802) are connected in the sliding grooves in a sliding mode.

3. The comb plate type bridge telescoping device according to claim 1, wherein: the sliding block (802) is connected with the second comb teeth (4) through a mounting nut (803).

4. The comb plate type bridge telescoping device according to claim 1, wherein: a plurality of supporting boxes are arranged between the sliding rail (7) and the upper lining plate (5), and the internal size structure of the supporting boxes is consistent with the external size structure of the sliding block (802).

5. The comb plate type bridge telescoping device according to claim 1, wherein: the front ends of the second comb teeth (4) and one side, close to the second comb teeth (4), of the fixing plate (1) are of a slope type design.

6. The comb plate type bridge telescoping device according to claim 1, wherein: the first comb teeth (3) and the second comb teeth (4) are distributed in a staggered mode.

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