CN219951683U - Multi-directional deflection expansion device with fatigue resistance and easy replacement - Google Patents

Abstract

The utility model relates to the field of highway bridge expansion joints, in particular to an anti-fatigue and easy-to-replace multidirectional displacement expansion device; the telescopic mechanism comprises a first rack beam, a second rack beam, a first embedded box body, a second embedded box body, a fixed support, a movable support, a first cover plate and a second cover plate. According to the utility model, through the connection of the detachable connecting pieces between the first embedded box body and the first cover plate and between the second embedded box body and the second cover plate, the replacement of all parts except the embedded box body can be realized simply and conveniently without excavating concrete, the traffic control time is greatly reduced, and the replacement is easy, quick and convenient; through setting up first rack roof beam and second rack roof beam, can be applicable to bridge seam multiple item and shift, vehicle load acts on the rack roof beam, under fixed support and movable support's effect, can flexible transfer to the concrete in roof beam body trough area, guarantee concrete and telescoping device steel member long-term life.

Description

Multi-directional deflection expansion device with fatigue resistance and easy replacement

Technical Field

The utility model relates to the field of highway bridge expansion joints, in particular to an anti-fatigue and easy-to-replace multidirectional displacement expansion device.

Background

Under the actions of temperature, load and the like, the bridge body can deform, so that a telescopic device is required to be arranged between the beam ends. The bridge expansion device not only can meet the requirement of expansion and contraction of the bridge and other displacements, but also can bear the load of the vehicle and reliably transmit the load to the lower structure. Meanwhile, the bridge expansion device is used as a vulnerable part of a bridge, and the bridge expansion device also needs to have the performance of easy replacement and quick replacement in consideration of traffic pressure.

At present, a common bridge expansion device is divided into a modular type expansion device and a comb plate type expansion device, wherein the modular type expansion device has an anti-fatigue principle for bearing and transmitting load, and can use a plurality of beam joints for displacement, but has long replacement period, and huge traffic and safety management pressure during replacement, so that the traffic smoothness is poor, and the defects of easy occurrence of vehicle jump, large traffic noise and the like are overcome; the common comb plate telescopic device has the advantages of smooth traffic, low noise, easy replacement of a simple comb plate and the like, but the common comb plate telescopic device mainly has the following defects: 1) The comb plate and the concrete are anchored by bolts, the anchoring performance is poor, once the anchoring bolts are damaged, the anchoring pieces are replaced by excavating the concrete in the mounting groove area, the replacement is difficult, and meanwhile, once the anchoring bolts are damaged, the comb plate cannot be fixed, so that potential hazards of traffic accidents are brought; 2) Besides being adaptable to the expansion and contraction of the planar beam body, the beam seam can not integrally meet the requirement of sector deformation and transverse dislocation (upward dislocation can generate tilted teeth); 3) The installation accuracy is high, and the period is long; 4) The anchoring piece (comprising the anchoring and the integral welding of the comb plate) is complex in stress, the rigidity reaction force of the concrete in the groove area is large, the concrete in the groove area is easy to damage, and the fatigue resistance performance is poor.

Therefore, the utility model provides the anti-fatigue and easy-to-replace multidirectional displacement telescopic device.

Disclosure of Invention

Accordingly, it is desirable to provide a multi-directional displacement telescopic device which is resistant to fatigue and easy to replace.

In order to achieve the above object, the technical scheme of the present utility model is as follows:

the utility model provides an anti-fatigue, easy-to-replace multidirectional deflection telescoping device, includes first roof beam body, second roof beam body and telescopic machanism, and the one end that first roof beam body and second roof beam body have the clearance, telescopic machanism installs in the clearance department between first roof beam body and the second roof beam body, telescopic machanism includes a plurality of first rack roof beams, a plurality of second rack roof beams, first pre-buried box, second pre-buried box, fixed bolster, movable bolster, first apron and second apron, first pre-buried box and second pre-buried box are pre-buried respectively in first roof beam body, second roof beam body, first pre-buried box and second pre-buried box's top is through dismantling connecting piece fixed mounting first apron, second apron respectively, fixed bolster is through locating connecting piece fixed mounting on second pre-buried box and second apron, a plurality of second rack roof beam's stiff end all is parallel and lays through locating connecting piece fixed mounting on fixed bolster, movable bolster parallel arrangement is parallel to each other in first rack roof beam through locating connecting piece fixed mounting on the first rack roof beam, parallel arrangement is parallel to the first rack roof beam.

Preferably, the first embedded box body and the second embedded box body comprise a bottom plate, a side plate fixedly arranged on one side of the bottom plate, a plurality of rib plates fixedly arranged on the top surface of the bottom plate and a plurality of embedded ribs fixedly arranged on the lower surface of the bottom plate and on the side surface of the side plate, the rib plates and the side plate are vertically arranged, and the bottom plate, the side plate, the rib plates and the embedded ribs are of an integrated structure.

Preferably, bridge prestressed steel bundles are arranged in the first beam body and the second beam body, the bridge prestressed steel bundles are welded with the embedded bars, and pouring holes are further formed in the bottom plate.

Preferably, the fixed support comprises a fixed upper support and a fixed lower support which are oppositely arranged, the fixed lower support is arranged below the second embedded box body, the fixed upper support is arranged above the second embedded box body, the fixed upper support and the fixed lower support are fixedly arranged on the second embedded box body and the second cover plate through positioning connecting pieces, and the fixed end of the second rack beam is fixedly arranged between the fixed upper support and the fixed lower support through positioning connecting pieces.

Preferably, the clearance distance between the fixed end of the second rack beam and the rib plate in the second embedded box body is 5mm.

Preferably, the movable support comprises a movable upper support and a movable lower support which are oppositely arranged, the movable lower support is arranged below the second embedded box body, the movable upper support is arranged above the second embedded box body, the movable upper support and the movable lower support are fixedly arranged on the first embedded box body and the first cover plate through positioning connecting pieces, and the fixed end of the first rack beam is fixedly arranged between the movable upper support and the movable lower support through positioning connecting pieces.

Preferably, the clearance distance between the fixed end of the first rack beam and the rib plate in the first embedded box body is 5mm.

Preferably, the first rack beam and the second rack beam are of boss-shaped structures, and the upper surfaces of the first rack beam and the second rack beam are flush with the road surface.

Preferably, the fixed support and the movable support are made of high polymer elastic materials.

Preferably, the telescopic mechanism further comprises a water bar, wherein the water bar is fixedly arranged at a gap between the first beam body and the second beam body, and the water bar is arranged below the telescopic mechanism.

The utility model has the advantages that: according to the anti-fatigue and easy-to-replace multidirectional displacement telescopic device, all parts except the embedded box body can be replaced simply and conveniently under the condition that concrete is not excavated through the connection of the detachable connecting pieces between the first embedded box body and the first cover plate and between the second embedded box body and the second cover plate, so that the traffic control time is greatly shortened, and the replacement is easy, quick and convenient; through the whole embedded box body and the concrete pouring of the Liang Ticao area, a concrete stress model of the beam body groove area can be improved, so that the service life of the concrete of the beam body groove area is prolonged, and the equivalent service life of the concrete and the beam body is further ensured; through the structure of first rack roof beam and second rack roof beam and fixed, displacement form thereof, can be applicable to bridge seam multiple item and shift, still can guarantee that the traffic is smooth and easy, and noise reduction, simultaneously, vehicle load acts on the rack roof beam, can possess fatigue resistance under the fixed support and the movable support's that polymer elastic material was made, can flexibly transfer to the beam body trough area concrete, guarantees concrete and telescoping device steel member long-term life.

Drawings

FIG. 1 is a schematic structural view of an anti-fatigue and easy-to-replace multidirectional displacement telescopic device in an embodiment of the utility model;

FIG. 2 is a schematic structural diagram of a first pre-buried box according to an embodiment of the present utility model;

fig. 3 is a schematic structural view of a first rack bar according to an embodiment of the present utility model.

Reference numerals: the first beam body 11, the second beam body 12, the bridge prestress steel beam 13, the first rack beam 21, the second cover plate 22, the first embedded box body 23, the rib plates 231, the side plates 232, the bottom plate 233, the embedded ribs 234, the fixed upper support 24, the fixed lower support 25, the movable upper support 26, the movable lower support 27, the detachable connecting piece 28, the positioning connecting piece 29, the water retaining bar 210 and the second rack beam 211.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be further described in detail by the following detailed description with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

The utility model provides an anti-fatigue, easy-to-replace multidirectional displacement telescoping device, refer to figure 1, including first roof beam body 11, second roof beam body 12 and telescopic machanism, wherein, the one end that first roof beam body 11 and second roof beam body 12 link to each other has the clearance, telescopic machanism installs in the clearance department between first roof beam body 11 and the second roof beam body 12, telescopic machanism includes a plurality of first rack beams 21, a plurality of second rack beams 211, first pre-buried box 23, the second pre-buried box, fixed bolster, movable bolster, first apron and second apron 22, first pre-buried box 23 and second pre-buried box are pre-buried respectively in first roof beam body 11, in the second roof beam body 12, the top of first pre-buried box 23 and second pre-buried box is through detachable connecting piece 28 fixed mounting first apron, second apron 22 respectively, and the upper surface of first apron and second apron 22 all flush with the road surface, fixed bolster is fixed mounting on second pre-buried box and second apron 22 through locating connecting piece 29 (for example: locating pin), a plurality of fixed bolster fixed mounting is on second pre-buried box and second apron 22, a plurality of fixed end are parallel to each other and are fixed mounting in parallel rack beams 21 and fixed mounting on the fixed bolster 21 through the rack beams 21 and the fixed mounting of second rack beams 21 and the movable bolster support is parallel to each other through the fixed mounting of rack bars 29.

In this embodiment, since the first pre-buried box body 23 and the second pre-buried box body are pre-buried in the first beam body 11 and the second beam body 12 respectively, the first cover plate and the second cover plate 22 are fixedly installed at the top of the first pre-buried box body 23 and the second pre-buried box body respectively, and the upper surfaces of the first cover plate and the second cover plate 22 are flush with the road surface, meanwhile, the first pre-buried box body 23 and the second pre-buried box body are fixedly installed with the first cover plate and the second cover plate 22 respectively through the detachable connecting piece 28 (for example, an M16X55 inner hexagon bolt), and under the condition that concrete is not excavated, the replacement of all parts except the pre-buried box body can be realized simply and conveniently only by opening the cover plates, so that the traffic control time is greatly reduced, and the replacement is convenient and quick.

In the embodiment, the connecting screw holes between the embedded box body and the cover plate are configured in a factory, so that the site installation precision requirement of a construction site can be greatly reduced, and the installation is convenient and quick.

In this embodiment, by arranging the first rack beam 21 and the second rack beam 211, wherein the fixed ends of the first rack beam 21 and the second rack beam 211 are respectively fixedly mounted on the movable support and the fixed support, and the adjacent first rack beam 21 and second rack beam 211 are distributed in a staggered comb-tooth structure, the relative sliding fit between the movable ends of the first rack beam 21 and the second rack beam 211 can be realized, and each independent first rack beam 21 and second rack beam 211 can rotate around the movable support and the fixed support plane to adapt to the dislocation and rotation of Liang Fengping surfaces so as to be suitable for multiple displacements of bridge joints; in addition, the first rack beam 21 and the second rack beam 211 form a simple support beam structure under the action of the movable lower support 27 and the fixed lower support 25 respectively, and smooth transition beam seam two-side height difference can not generate a pavement tooth-lifting phenomenon so as to ensure that the wheels are stable when passing through the structure, no vehicle jump condition occurs, and the noise is small.

In this embodiment, the first pre-buried box 23 and the second pre-buried box each include a bottom plate 233, a side plate 232 fixedly mounted on one side of the bottom plate 233, a plurality of ribs 231 fixedly mounted on the top surface of the bottom plate 233, and a plurality of pre-buried ribs 234 fixedly mounted on the lower surface of the bottom plate 233 and fixedly mounted on the side surface of the side plate 232, the ribs 231 and the side plate 232 are vertically arranged, and the bottom plate 233, the side plate 232, the ribs 231 and the pre-buried ribs 234 are in an integrated structure; the first beam body 11 and the second beam body 12 are respectively provided with a bridge prestress steel beam 13, the bridge prestress steel beam 13 is welded with the embedded ribs 234, and the bottom plate 233 is also provided with pouring holes.

In this embodiment, referring to fig. 2, the first pre-buried box 23 and the second pre-buried box have the same structure, and each of them includes a bottom plate 233, a side plate 232, a rib plate 231 and pre-buried ribs 234, and when in construction, the first pre-buried box 23 or the second pre-buried box and the bridge beam pre-buried ribs are integrally poured after being welded, and the bottom plate 233 is provided with pouring holes, so that the first pre-buried box 23 or the second pre-buried box and the concrete can form a reliable whole, and meanwhile, the assembly welding piece pre-buried box can integrally bear the wheel load, and the concentrated load of the telescopic mechanism acts on the dispersed wheels, so as to achieve the purpose of protecting the concrete.

In this embodiment, the fixed support includes a fixed upper support 24 and a fixed lower support 25 which are oppositely disposed, the fixed lower support 25 is disposed below the second embedded box, the fixed upper support 24 is disposed above the second embedded box, the fixed upper support 24 and the fixed lower support 25 are fixedly mounted on the second embedded box and the second cover plate 22 through a positioning connector 29, and the fixed end of the second rack beam 211 is fixedly mounted between the fixed upper support 24 and the fixed lower support 25 through the positioning connector 29; the gap distance between the fixed end of the second rack beam 211 and the rib plate 231 in the second pre-buried box body is 5mm; the movable support comprises a movable upper support 26 and a movable lower support 27 which are oppositely arranged, the movable lower support 27 is arranged below the second embedded box body, the movable upper support 26 is arranged above the second embedded box body, the movable upper support 26 and the movable lower support 27 are fixedly arranged on the first embedded box body 23 and the first cover plate through positioning connecting pieces 29, and the fixed end of the first rack beam 21 is fixedly arranged between the movable upper support 26 and the movable lower support 27 through the positioning connecting pieces 29; the clearance distance between the fixed end of the first rack beam 21 and the rib plate 231 in the first pre-buried box 23 is 5mm; the fixed support and the movable support are made of high polymer elastic materials.

In this embodiment, the fixed support and the movable support are used for fixing the first rack beam 21 and the second rack beam 211 respectively so as to realize staggered comb-shaped distribution of the first rack beam 21 and the second rack beam 211, and meanwhile, the fixed support and the movable support are made of polymer elastic materials, which include but are not limited to polyurethane materials, and the like, and when a vehicle load acts on the first rack beam 21 and the second rack beam 211, the vehicle load can be flexibly transferred to the concrete in the trough area under the action of the fixed support and the movable support made of the polymer elastic materials, so that the long-term service life of the concrete and the steel members of the telescopic devices is ensured.

In the present embodiment, the first rack beam 21 and the second rack beam 211 are each of a boss-like structure, and the upper surfaces of the first rack beam 21 and the second rack beam 211 are each flush with the road surface.

In this embodiment, referring to fig. 3, the first rack beam 21 and the second rack beam 211 have the same structure, and by providing the first rack beam 21 and the second rack beam 211 with boss-like structures, the upper surfaces of the first rack beam 21 and the second rack beam 211 are all flush with the road surface, so that the wheels can be ensured to be stable when passing through the structure, and no vehicle jump condition occurs.

In this embodiment, the device further includes a water bar 210, the water bar 210 is fixedly installed at a gap between the first beam 11 and the second beam 12, and the water bar 210 is disposed below the telescopic mechanism.

In the present embodiment, by providing the water bar 210, it is also possible to waterproof-seal the gap (expansion joint) between the first beam 11 and the second beam 12.

It will be apparent to those skilled in the art that the various step embodiments of the utility model described above may be performed in ways other than those described herein, including but not limited to simulation methods and experimental apparatus described above. The steps of the utility model described above may in some cases be performed in a different order than that shown or described above, and may be performed separately. Therefore, the present utility model is not limited to any specific combination of hardware and software.

The foregoing is a further detailed description of the utility model in connection with specific embodiments, and is not intended to limit the practice of the utility model to such descriptions. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the utility model, and these should be considered to be within the scope of the utility model.

Claims (10)

1. The utility model provides an anti-fatigue, easy multidirectional telescoping device that shifts, includes first roof beam body, second roof beam body and telescopic machanism, the one end that first roof beam body and second roof beam body have the clearance, telescopic machanism installs in the clearance department between first roof beam body and the second roof beam body, its characterized in that, telescopic machanism includes a plurality of first rack beams, a plurality of second rack beams, first pre-buried box, second pre-buried box, fixed bolster, movable support, first apron and second apron, first pre-buried box and second pre-buried box are pre-buried respectively in first roof beam body, second roof beam body, first apron of first pre-buried box and second pre-buried box top through detachable connecting piece fixed mounting respectively, fixed bolster is through locating connecting piece fixed mounting on second pre-buried box and second apron, a plurality of the stiff end of second rack beams all is parallel and parallel arrangement on the movable support is the fixed bolster through locating connecting piece fixed mounting on the first rack beams, parallel arrangement is parallel to each other in first rack beam fixed mounting structure.

2. The anti-fatigue and easy-to-replace multidirectional displacement telescopic device according to claim 1, wherein the first embedded box body and the second embedded box body comprise a bottom plate, a side plate fixedly installed on one side of the bottom plate, a plurality of rib plates fixedly installed on the top surface of the bottom plate, a plurality of embedded ribs fixedly installed on the lower surface of the bottom plate and fixedly installed on the side surface of the side plate, and the rib plates and the side plate are vertically distributed.

3. The anti-fatigue and easy-to-replace multidirectional displacement telescopic device according to claim 2, wherein bridge prestressed steel bundles are arranged in the first beam body and the second beam body, the bridge prestressed steel bundles are welded with the embedded ribs, and pouring holes are formed in the bottom plate.

4. The anti-fatigue and easy-to-replace multidirectional displacement telescopic device according to claim 2, wherein the fixed support comprises a fixed upper support and a fixed lower support which are oppositely arranged, the fixed lower support is arranged below the second embedded box body, the fixed upper support is arranged above the second embedded box body, the fixed upper support and the fixed lower support are fixedly arranged on the second embedded box body and the second cover plate through positioning connecting pieces, and the fixed end of the second rack beam is fixedly arranged between the fixed upper support and the fixed lower support through the positioning connecting pieces.

5. The anti-fatigue and easy-to-replace multidirectional displacement telescopic device according to claim 4, wherein the clearance distance between the fixed end of the second rack beam and the rib plate in the second embedded box body is 5mm.

6. The anti-fatigue and easy-to-replace multidirectional displacement telescopic device according to claim 2, wherein the movable support comprises an upper movable support and a lower movable support which are oppositely arranged, the lower movable support is arranged below the second embedded box body, the upper movable support is arranged above the second embedded box body, the upper movable support and the lower movable support are fixedly arranged on the first embedded box body and the first cover plate through positioning connecting pieces, and the fixed end of the first rack beam is fixedly arranged between the upper movable support and the lower movable support through positioning connecting pieces.

7. The anti-fatigue and easy-to-replace multidirectional displacement telescopic device according to claim 6, wherein the clearance distance between the fixed end of the first rack beam and the rib plate in the first embedded box body is 5mm.

8. The anti-fatigue and easy-to-replace multidirectional displacement telescopic device according to claim 1, wherein the first rack beam and the second rack beam are of boss-shaped structures.

9. The anti-fatigue and easy-to-replace multidirectional displacement telescopic device according to claim 1, wherein the fixed support and the movable support are made of high-molecular elastic materials.

10. The fatigue-resistant, easily replaceable multi-directional displacement telescoping device of any one of claims 1-9, further comprising a water bar fixedly mounted at a gap between the first beam and the second beam, the water bar being disposed below the telescoping mechanism.