CN212611939U - Multidirectional damping toothed plate expansion joint that shifts - Google Patents

Abstract

A multidirectional shifting damping toothed plate expansion joint comprises a seam-crossing movable toothed plate and a non-seam-crossing movable toothed plate, seam-crossing movable toothed plate teeth are arranged on the edge of one side edge of the seam-crossing movable toothed plate, the space between every two adjacent seam-crossing movable toothed plate teeth is a non-seam-crossing movable toothed plate tooth matching cavity, non-seam-crossing movable toothed plate teeth are arranged on the edge of one side edge of the non-seam-crossing movable toothed plate, and the space between every two adjacent non-seam-crossing movable toothed plate teeth is a seam-crossing movable toothed plate tooth matching cavity; the multidirectional displacement damping mechanism of the seam crossing movable comb plate is arranged on one downward side of the seam crossing movable comb plate; the method is characterized in that: the non-seam-crossing movable comb plate is provided with a non-seam-crossing movable comb plate multidirectional displacement damping mechanism, and the structure of the seam-crossing movable comb plate multidirectional displacement damping mechanism is the same as that of the non-seam-crossing movable comb plate multidirectional displacement damping mechanism. The displacement motion capability of resisting large stress is improved; the condition that the cable cannot be recovered after being displaced is avoided; the displacement capability against the instant impact is improved; the structure is simple.

Description

Multidirectional damping toothed plate expansion joint that shifts

Technical Field

The utility model belongs to the technical field of the bridge member, concretely relates to multidirectional damping pinion rack expansion joint that shifts.

Background

The expansion joint is an indispensable component of a bridge, and aims to meet the requirement of bridge deck deformation by arranging the expansion joint between two beam ends of a bridge body, between the beam ends and a bridge abutment or at the hinged position of the bridge. The expansion joint is required to freely expand and contract in two directions parallel to and perpendicular to the axis of the bridge, and is firm and reliable, and vehicles are smooth when passing by without step-shaped jump and noise; can prevent rainwater from causing the infiltration of garbage soil to block; the installation, the inspection, the maintenance, the cleaning and the like are convenient.

The technical information of the expansion joints for bridges can be seen in the published chinese patent documents, for example, document a) CN209798524U recommends "one kind of bridge expansion joint", document B) CN102808377A provides "spatial multi-directional displacement comb plate type bridge expansion device for bridge expansion joints", and document C) CN205824163U introduces "one kind of prestressed multi-directional displacement expansion joint". The common characteristics of the three aforementioned patents are that the form of the comb plate is adopted and each has a unique technical effect, but because document a) adopts a bolt to directly and fixedly connect the comb plate of the structural system forming the expansion joint with the embedded steel bar (see paragraph 0016 in the specification), the change movement of the expansion joint is limited, and the resistance in the face of extreme conditions is relatively poor, specifically for example: the toothed plates are likely to collide with each other when the displacement is generated, so that the toothed plates are damaged; the comb plate can not be reset after the expansion joint is displaced, so that the comb plate is permanently in the displacement state for a long time, namely the comb plate is in the displaced state, the comb plate is damaged due to uneven stress, and the service life of the expansion joint is influenced to a certain extent; when the vehicle was in the fishback of state of being in active service through, because the vehicle can produce impact and/or great vibration in the twinkling of an eye to the fishback, aforementioned bolt exists not hard up and even breaks away and is connected with reinforcing bar spare (mostly all adopt the pouring fixed connection after the iron wire ligature), causes the fishback to beat or the perk phenomenon when serious, causes the traffic accident. Document B) divides the two comb plates into a fixed comb plate and a gap-crossing movable comb plate, and a rotary support and a damping connector are configured for the gap-crossing movable comb plate, and a bolt (referred to as bolt one in the patent) for connecting the fixed comb plates is cast and fixed with a concrete cast-in-place body, which can be specifically referred to in paragraph 0048 of the specification of the patent. In connection with document a), document B) is known to have the same disadvantages as document a) in that its fixed comb plate is cast in place with the concrete cast-in-place body, and although the slot-spanning movable comb plate has a multi-directional deflection action to some extent, it is not advantageous to expand the application area because it is obtained with a complex combined structure of a damping connector in cooperation with a rotating support and at a high cost. The small toothed plate of document C) corresponds to the fixed toothed plate of document B), and a bolt (referred to as an "anchor") connected thereto is also cast-connected to the concrete layer, and a large toothed plate of the straddle movable toothed plate of document B) is provided with a displacement device composed of a box, a rubber strip, a stress bolt, and a spring, and the large toothed plate is simultaneously cast-connected to the concrete layer by the anchor, so that the aforementioned disadvantages of document a) are substantially the same as in document C). In view of the foregoing, it is to be appreciated that the following detailed description is directed to embodiments of the invention.

Disclosure of Invention

The task of the utility model is to provide a help showing and improve the situation that shifts the motion ability and can avoid leading to the fishback to collide each other because of excessively shifting under the big situation of reply atress takes place, be favorable to showing the motion ability that shifts that promotes the fishback and can avoid the fishback to be in the state after shifting lastingly and both can effectively protect the fishback and can ensure the fishback atress evenly and the life in the reasonable term of extension again, be of value to showing and improve the resistant vibration ability to anti impact etc. in the twinkling of an eye and can avoid the fishback to jump and cause the multidirectional damping pinion expansion joint that shifts of accident.

The utility model is characterized in that the expansion joint of the multidirectional displacement damping toothed plate comprises a seam crossing movable comb plate and a non-seam crossing movable comb plate, the edge part of one side of the seam-crossing movable comb plate facing to the non-seam-crossing movable comb plate is formed with seam-crossing movable comb teeth at intervals, the space between every two adjacent seam-crossing movable comb teeth is formed into a non-seam-crossing movable comb teeth matching cavity, non-seam-spanning movable comb teeth are formed at the edge part of one side of the non-seam-spanning movable comb tooth plate, which faces the seam-spanning movable comb tooth plate, in a spaced state, the space between every two adjacent non-seam-spanning movable comb teeth is formed into a seam-spanning movable comb tooth plate tooth matching cavity, the seam crossing movable comb teeth correspond to and are matched with the seam crossing movable comb teeth matching cavities, the non-seam-crossing movable comb teeth plate correspond to and are matched with the non-seam-crossing movable comb teeth plate matching cavities; the seam-crossing movable comb plate multidirectional displacement damping mechanism is arranged on one downward side of the seam-crossing movable comb plate at intervals along the region where the seam-crossing movable comb plate is far away from the non-seam-crossing movable comb plate tooth matching cavity; is characterized in that the non-seam-crossing movable comb plate is respectively provided with a non-seam-crossing movable comb plate multidirectional displacement damping mechanism at the position corresponding to the non-seam-crossing movable comb plate teeth and the area of the non-seam-crossing movable comb plate far away from the seam-crossing movable comb plate tooth matching cavity, and the structure of the seam-crossing movable comb plate multidirectional displacement damping mechanism is the same as that of the non-seam-crossing movable comb plate multidirectional displacement damping mechanism.

The utility model discloses a specific embodiment the seam crossing activity broach board tooth orientation the seam crossing activity broach board tooth one side in seam crossing activity broach board tooth cooperation chamber constitutes there is a seam crossing activity broach board tooth inclined plane, gets into when seam crossing activity broach board tooth the degree of seam crossing activity broach board tooth cooperation intracavity of non-seam crossing activity broach board tooth reaches the limit, seam crossing activity broach board tooth inclined plane shovels into the bottom surface of non-seam crossing activity broach board with the guide state.

The utility model discloses a further concrete embodiment the seam crossing activity fishback is kept away from the region that non-seam crossing activity fishback tooth cooperation chamber is located and corresponding to seam crossing activity fishback multidirectional shifting damping mechanism position constitutes seam crossing activity fishback locking ring chamber that has quantity and seam crossing activity fishback multidirectional shifting damping mechanism equal, has seted up a seam crossing activity fishback multidirectional shifting damping mechanism connecting bolt hole in the central point of this seam crossing activity fishback locking ring chamber's chamber bottom wall, seam crossing activity fishback multidirectional shifting damping mechanism be located with vertical cantilever state in the position that corresponds seam crossing activity fishback multidirectional shifting mechanism connecting bolt hole seam crossing activity fishback one side and perpendicular with seam crossing activity fishback.

In another specific embodiment of the present invention, the number of the locking ring cavities of the movable comb plate is a plurality of rows distributed at intervals along the length direction of the movable comb plate, and each row is a plurality.

The utility model discloses a still another concrete embodiment on the non-stride seam activity fishback and being located the position of non-stride seam activity fishback locking ring chamber and corresponding to keeping away from the position in the region at stride seam activity fishback cooperation chamber place respectively constitute have non-stride seam activity fishback locking ring chamber, have seted up non-stride seam activity fishback multidirectional damping mechanism connecting bolt hole that shifts at the central point of this non-stride seam activity fishback locking ring chamber's chamber bottom wall, non-stride seam activity fishback multidirectional damping mechanism that shifts be located one side that non-stride seam activity fishback orientation down and non-stride seam activity fishback is perpendicular corresponding to the position of non-stride seam activity fishback multidirectional damping mechanism connecting bolt hole that shifts.

In still another specific embodiment of the present invention, the non-seam-crossing movable comb plate multidirectional displacement damping mechanism includes a displacement nut cylinder, a displacement nut, a damping pad, an upper cover, a lower cover, a displacement nut connecting bolt and a shearing column, the upper end of the displacement nut cylinder is welded and fixed to the side of the non-seam-crossing movable comb plate multidirectional displacement damping mechanism connecting bolt hole on the bottom wall of the cavity corresponding to the locking ring cavity of the non-seam-crossing movable comb plate, the lower end of the displacement nut cylinder extends in the direction away from the non-seam-crossing movable comb plate in a longitudinal cantilever state and is perpendicular to the side of the non-seam-crossing movable comb plate facing downward, the displacement nut is disposed in the displacement nut cylinder cavity of the displacement nut cylinder and is located between the damping pad and the lower cover, and the damping pad is also disposed in the displacement nut cylinder cavity and is located between the upper cover and the displacement nut, the upper sealing cover and the lower sealing cover are both located in the shifting nut barrel cavity and are welded and fixed with the cavity wall of the shifting nut barrel cavity, the shifting nut connecting bolt sequentially turns in the shifting nut connecting bolt from top to bottom through the shifting bolt hole of the non-cross-joint movable comb plate multidirectional shifting damping mechanism connecting bolt hole and the upper sealing cover bolt hole in the central position of the upper sealing cover and the damping pad bolt hole in the central position of the damping pad, the shifting nut, the shearing column, the downward side of the lower sealing cover and the downward side of the shifting nut barrel are fixed in surface and perpendicular to the downward side of the lower sealing cover, and in a use state, the shearing column is welded and fixed with the embedded steel bars located in the concrete right-side pouring layer of the upper surface of the bridge body.

The present invention further provides a specific embodiment, wherein the lower portion of the displacement nut is provided with one or more positioning pin upper portion access holes, the lower cover is provided with one or more positioning pin lower portion access holes at positions corresponding to the positioning pin upper portion access holes, and a rotation angle shearing positioning pin is provided between the positioning pin upper portion access holes and the positioning pin lower portion access holes.

The utility model discloses a and then a concrete embodiment set up a pair of barrel pinhole on the outer wall of the lower extreme of the nut section of thick bamboo that shifts, should be the blind hole and separate 180 each other around the circumferencial direction of the nut section of thick bamboo that shifts to the barrel pinhole, respectively weld with horizontal cantilever state and have a barrel turned angle shearing locating pin corresponding to the position of a pair of barrel pinhole, this barrel turned angle shearing locating pin with embedded bar fixed.

In yet another specific embodiment of the present invention, a shifting nut connecting bolt retaining ring is embedded in the non-span-seam movable comb plate locking ring cavity, a hexagon socket is formed in the center of the shifting nut connecting bolt retaining ring, and an outer hexagon head is formed at the upper end of the shifting nut connecting bolt and is matched with the hexagon socket.

The utility model discloses a and then a concrete embodiment the marginal portion of the nut connecting bolt that shifts stopping ring sets up one with external communicating and from the upper portion of the thickness direction of the nut connecting bolt that shifts stopping ring extends to a C font screw hole of lower part, is furnished with a stopping ring stopping at the position corresponding to this C font screw hole soon and prescribes a limit to the screw, should stop the ring stopping prescribe a limit to the screw with the chamber wall contact in non-span seam activity fishback locking ring chamber.

The utility model provides one of the technical effects of the technical scheme, because the seam crossing movable comb plate multidirectional displacement damping mechanism and the seam non-crossing movable comb plate multidirectional displacement damping mechanism are respectively arranged on the seam crossing movable comb plate and the seam non-crossing movable comb plate, so that the two comb plates have an active displacement motion function, the displacement motion capability under the condition of large resisting stress can be obviously improved, and the situation that the comb plates collide with each other due to excessive displacement is avoided; secondly, because the seam-crossing movable comb plate and the non-seam-crossing movable comb plate have good displacement functions, the displacement recovery capability of the comb plate is favorably and obviously improved, the situation that the comb plate cannot be recovered after being permanently displaced is avoided, the comb plate can be effectively protected, and the comb plate can be uniformly stressed, so that the service life within a reasonable period is prolonged; thirdly, as the seam-crossing movable comb teeth can be matched with the bottom surfaces of the non-seam-crossing movable comb teeth by utilizing the inclined surfaces of the seam-crossing movable comb teeth, the displacement capability of resisting instant impact is obviously improved when the instant impact and the like are applied, the fluttering or the tilting is avoided, and the traffic accidents caused when the vehicle passes by are prevented; fourthly, because the multidirectional shifting damping mechanism of the non-seam-crossing movable comb plate and the multidirectional shifting damping mechanism of the seam-crossing movable comb plate are identical in structure and simple in structure, ideal economical efficiency can be embodied, and the requirement for convenient use can be met.

Drawings

Fig. 1 is a structural diagram of an embodiment of the present invention.

Fig. 2 is an enlarged view of a portion a of fig. 1.

Fig. 3 is a schematic view illustrating an application of the present invention.

Detailed Description

In order to make the technical essence and advantages of the present invention more clear, the applicant below describes in detail the embodiments, but the description of the embodiments is not a limitation of the present invention, and any equivalent changes made according to the inventive concept, which are only formal and not essential, should be considered as the technical scope of the present invention.

In the following description, all the concepts related to the directions or orientations of up, down, left, right, front and rear are exemplified by the position state of fig. 1, and thus, it should not be understood as a particular limitation to the technical solution provided by the present invention.

Referring to fig. 1, a seam-spanning movable comb plate 1 and a non-seam-spanning movable comb plate 2 are shown, seam-spanning movable comb plate teeth 11 are formed at the edge part of one side of the seam-spanning movable comb plate 1 facing the non-seam-spanning movable comb plate 2 in a spaced state, the space between every two adjacent seam-spanning movable comb plate teeth 11 is formed into a non-seam-spanning movable comb plate tooth matching cavity 12, non-seam-crossing movable comb teeth 21 are formed at the edge part of one side, facing the seam-crossing movable comb teeth 1, of the non-seam-crossing movable comb teeth 2 at intervals, a space between every two adjacent non-seam-crossing movable comb teeth 21 forms a seam-crossing movable comb teeth matching cavity 22, the seam-crossing movable comb teeth 11 correspond to and match the seam-crossing movable comb teeth matching cavity 22, and the non-seam-crossing movable comb teeth 21 correspond to and match the non-seam-crossing movable comb teeth matching cavity 12; the seam crossing movable comb plate multidirectional displacement damping mechanism 3 is arranged on one side of the seam crossing movable comb plate 1 facing downwards along with the area where the seam crossing movable comb plate 1 is far away from the non-seam crossing movable comb plate tooth matching cavity 12, namely the left side of the position state shown in the figure 1, of the seam crossing movable comb plate multidirectional displacement damping mechanism 3.

As the technical scheme provided by the utility model: the non-seam-spanning movable comb plate multidirectional displacement damping mechanisms 4 are respectively arranged on the non-seam-spanning movable comb plate 2, at the positions corresponding to the non-seam-spanning movable comb plate teeth 21 and at the right side of the position state shown in fig. 1, which is the region where the non-seam-spanning movable comb plate 2 is far away from the seam-spanning movable comb plate tooth matching cavity 22, and the structure of the seam-spanning movable comb plate multidirectional displacement damping mechanisms 3 is the same as that of the non-seam-spanning movable comb plate multidirectional displacement damping mechanisms 4.

The foregoing concept of the seam crossing and the seam non-crossing can be understood by the schematic illustration of fig. 3, because the bridge beam expansion joint 52 between the ends of the two corresponding bridge beams 5 is shown in fig. 3, and the water blocking tape 521 made of rubber is disposed at the position corresponding to the upper part of the bridge beam expansion joint 52, and the function of the water blocking tape 521 is the prior art, so that the following description is omitted. The term is used because the seam-spanning movable comb plate 1 spans the bridge girder expansion joint 52 and the non-seam-spanning movable comb plate 2 does not span the bridge girder expansion joint 52.

Continuing to refer to fig. 1, a seam-crossing movable comb teeth inclined plane 111 is formed on one side of the seam-crossing movable comb teeth 11 of the seam-crossing movable comb teeth 1 facing the seam-crossing movable comb teeth matching cavity 22, and when the degree of the seam-crossing movable comb teeth 11 entering the seam-crossing movable comb teeth matching cavity 22 of the non-seam-crossing movable comb teeth 2 reaches a limit, the seam-crossing movable comb teeth inclined plane 111 shovels into the bottom surface of the non-seam-crossing movable comb teeth 2 in a guiding state.

As shown in fig. 1 and combined with fig. 3, in the area where the aforementioned seam-spanning movable comb plate 1 is far away from the aforementioned non-seam-spanning movable comb plate tooth matching cavity 12, i.e. the area of the left half of the position state shown in fig. 1, and in the position corresponding to the aforementioned seam-spanning movable comb plate multidirectional displacement damping mechanism 3, seam-spanning movable comb plate locking ring cavities 13 equal in number to the seam-spanning movable comb plate multidirectional displacement damping mechanisms 3 are formed, a joint-crossing movable comb plate multidirectional displacement damping mechanism connecting bolt hole 131 (shown in fig. 3) is formed in the central position of the cavity bottom wall of the joint-crossing movable comb plate locking ring cavity 13, and the joint-crossing movable comb plate multidirectional displacement damping mechanism 3 is located on one downward side of the joint-crossing movable comb plate 1 in a longitudinal cantilever state at a position corresponding to the joint-crossing movable comb plate multidirectional displacement damping mechanism connecting bolt hole 131 and is perpendicular to the joint-crossing movable comb plate 1.

The number of the above-mentioned lock ring cavities 13 of the seam crossing movable comb plate has a plurality of rows and a plurality of rows, in this embodiment, two rows and five rows, which are distributed at intervals along the length direction of the above-mentioned seam crossing movable comb plate 1, but is not limited by the number shown in fig. 1.

Continuing with fig. 1, a non-seam-spanning movable comb plate locking ring cavity 23 is formed on the non-seam-spanning movable comb plate 2 and at a position located at the non-seam-spanning movable comb plate teeth 21 and a position corresponding to a region away from the non-seam-spanning movable comb plate teeth matching cavity 22, a non-seam-spanning movable comb plate multidirectional displacement damping mechanism connecting bolt hole 231 is formed in a central position of a cavity bottom wall of the non-seam-spanning movable comb plate locking ring cavity 23, and the non-seam-spanning movable comb plate multidirectional displacement damping mechanism 4 is located on a downward side of the non-seam-spanning movable comb plate 2 in a longitudinal cantilever state and is perpendicular to the non-seam-spanning movable comb plate 2 at a position corresponding to the non-seam-spanning movable comb plate multidirectional displacement damping mechanism connecting bolt hole 231. Since five non-slit-spanning movable comb teeth matching cavities 12 are shown in fig. 1, the number of the non-slit-spanning movable comb teeth 21 is correspondingly five, and each non-slit-spanning movable comb teeth 21 is distributed with one non-slit-spanning movable comb teeth multidirectional displacement damping mechanism 4.

Referring to fig. 2 in combination with fig. 1 and 3, the aforementioned non-seam-spanning movable comb plate multi-directional displacement damping mechanism 4 includes a displacement nut cylinder 41, a displacement nut 42, a damping pad 43, an upper cover 44, a lower cover 45, a displacement nut connecting bolt 46 and a shearing column 47, the upper end of the displacement nut cylinder 41 is welded and fixed to the downward side of the aforementioned non-seam-spanning movable comb plate 2 at the position of the non-seam-spanning movable comb plate multi-directional displacement damping mechanism connecting bolt hole 231 on the bottom wall of the cavity corresponding to the aforementioned non-seam-spanning movable comb plate locking ring cavity 23, the lower end of the displacement nut cylinder 41 extends in the direction away from the non-seam-spanning movable comb plate 2 in a longitudinal cantilever state and is perpendicular to the downward side of the non-seam-spanning movable comb plate 2, the displacement nut 42 is disposed in the displacement nut cylinder cavity 411 of the displacement nut cylinder 41 and is located between the damping pad 43 and the lower cover 45, the damping pad 43 is also arranged in the displacement nut barrel cavity 411 and is positioned between the upper sealing cover 44 and the displacement nut 42, the damping pad 43 is made of rubber, and can play an excellent damping role on the up-and-down vibration, the upper sealing cover 44 and the lower sealing cover 45 are both positioned in the displacement nut barrel cavity 411 and are welded and fixed with the cavity wall of the displacement nut barrel cavity 411, the displacement nut connecting bolt 46 is screwed into the displacement nut 42 from top to bottom in sequence through the non-seam-crossing movable comb plate multi-directional displacement damping mechanism connecting bolt hole 231 and the upper sealing cover bolt yielding hole 441 at the central position of the upper sealing cover 44, the damping pad bolt yielding hole 431 at the central position of the damping pad 43, the upper end surface of the shearing column 47 is welded and fixed with the downward side of the lower sealing cover 45 and the downward side surface of the displacement nut barrel 41 and is vertical to the downward side of the lower sealing cover 45, in a use state, the shear column 47 is welded to embedded steel bars 511 (shown in fig. 3) in a right concrete layer 51 that is poured on the upper surface of the bridge body 5.

As shown in fig. 1 and 2, a pair of positioning pin upper insertion holes 421 are formed in a lower portion of the displacement nut 42, a pair of positioning pin lower insertion holes 451 are similarly formed in the lower cover 45 at positions corresponding to the positioning pin upper insertion holes 421, and a rotation angle shearing positioning pin 48 is provided between the positioning pin upper insertion holes 421 and the positioning pin lower insertion holes 451. The applicant needs to state that: the number of the positioning pins 48 can be the same as that of the positioning pins 48, and the number of the positioning pins can be as small as one or more than three.

A pair of cylinder pin holes 412 are formed in an outer wall of a lower end of the displacement nut cylinder 41, the cylinder pin holes 412 are blind holes and are spaced apart from each other by 180 ° in a circumferential direction of the displacement nut cylinder 41, and a cylinder rotation angle shearing pin 4121 is welded to each of positions corresponding to the pair of cylinder pin holes 412 in a horizontal cantilever state, and the cylinder rotation angle shearing pin 4121 is fixed to the embedded steel bar 511.

The shear column 47 and the cylinder rotation angle shear positioning pin 4121 play a role in damping the rotation angle of the expansion joint.

Preferably and as shown in fig. 1 and 2, a shifting nut connecting bolt retaining ring 232 is embedded in the non-seam-spanning movable comb plate locking ring cavity 23, an inner hexagonal hole 2321 is formed in the center of the shifting nut connecting bolt retaining ring 232, and an outer hexagonal head 461 is formed at the upper end of the shifting nut connecting bolt 46, wherein the outer hexagonal head 461 is matched with the inner hexagonal hole 2321.

Further preferably, a C-shaped threaded hole 2322 which is communicated with the outside and extends from the upper part to the lower part of the displacement nut connecting bolt anti-back ring 232 in the thickness direction is formed at the edge part of the displacement nut connecting bolt anti-back ring 232, an anti-back ring anti-back limiting screw 23221 is screwed at a position corresponding to the C-shaped threaded hole 2322, and the anti-back ring anti-back limiting screw 23221 is in contact with the cavity wall of the non-seam-spanning movable comb plate locking ring cavity 23. Therefore, the stop ring stop limit screw 23221 prevents the shift nut connecting bolt stop ring 232 from rotating, and the shift nut connecting bolt stop ring 232 limits the outer hexagonal head 461, so that the shift nut connecting bolt 46 does not become loose abnormally.

Referring to fig. 3, as can be seen from the multi-directional shifting damping mechanism 3 of the seam-spanning movable comb plate illustrated in fig. 3, the structure thereof is completely the same as that of the aforementioned non-seam-spanning movable comb plate multi-directional shifting damping mechanism 4. Also shown in fig. 3 is a pavement layer 53 (also called a bridge deck edge pavement layer) belonging to the well-known art, and the aforementioned movable comb plates 1 across the seams and the movable comb plates 2 without across the seams correspond to the cavities 512 of the concrete poured layer 51.

Under the natural phenomenon of normal expend with heat and contract with cold, expend with heat and contract with cold deformation can appear in the corresponding end of two bridge roof beams 5 to cause the aforesaid bridge roof beam expansion joint 52 width to change, stride simultaneously seam movable fishback 1 also can correspondingly produce the condition of displacement in opposite directions or towards the direction displacement of contradicting each other with non-bay movable fishback 2, and in this embodiment, make aforementioned bridge roof beam expansion joint 52 be in the state of protecting (shielding) by striding seam movable fishback 1.

When sudden impact, such as sudden impact, occurs and when the displacement space of the seam-crossing movable comb teeth 11 of the seam-crossing movable comb plate 1 and the displacement space of the seam-crossing movable comb teeth 21 of the seam-crossing movable comb plate 2 are lost, excellent multi-directional displacement damping effect can be embodied by the combined action of the seam-crossing movable comb plate multi-directional displacement damping mechanism 3 and the seam-crossing movable comb plate multi-directional displacement damping mechanism 4, for example, the seam-crossing movable comb plate inclined plane 111, the pair of cylinder rotation angle shearing positioning pins 4121, the shearing column 47, the damping pad 43 (which plays a role in damping vibration up and down), and the rotation angle shearing positioning pin 48 can play a role in damping displacement.

To sum up, the technical solution provided by the present invention remedies the defects in the prior art, successfully completes the invention task, and faithfully embodies the technical effects mentioned in the above technical effect column by the applicant.

Claims (10)

1. A multidirectional shifting damping toothed plate expansion joint comprises a seam crossing movable toothed plate (1) and a non-seam crossing movable toothed plate (2), seam crossing movable toothed plate teeth (11) are formed at the edge part of one side, facing the non-seam crossing movable toothed plate (2), of the seam crossing movable toothed plate (1) in a spaced state, space between every two adjacent seam crossing movable toothed plate teeth (11) is formed into a non-seam crossing movable toothed plate tooth matching cavity (12), non-seam crossing movable toothed plate teeth (21) are formed at the edge part of one side, facing the seam crossing movable toothed plate (1), of the non-seam crossing movable toothed plate teeth (2) in a spaced state, space between every two adjacent non-seam crossing movable toothed plate teeth (21) is formed into a seam crossing movable toothed plate tooth matching cavity (22), the seam crossing movable toothed plate teeth (11) correspond to and are matched with the seam crossing movable toothed plate tooth matching cavity (22), the non-seam-crossing movable comb teeth (21) correspond to and are matched with the non-seam-crossing movable comb teeth matching cavity (12); the seam-crossing movable comb plate multidirectional displacement damping mechanism (3) is arranged on one downward side of the seam-crossing movable comb plate (1) at intervals along the region where the seam-crossing movable comb plate (1) is far away from the non-seam-crossing movable comb plate tooth matching cavity (12); the multidirectional displacement damping mechanism is characterized in that the multidirectional displacement damping mechanisms (4) of the non-seam-spanning movable comb plate are respectively arranged on the non-seam-spanning movable comb plate (2) in the positions corresponding to the non-seam-spanning movable comb plate teeth (21) and in the areas where the non-seam-spanning movable comb plate (2) is far away from the seam-spanning movable comb plate tooth matching cavities (22), and the structure of the multidirectional displacement damping mechanisms (3) of the seam-spanning movable comb plate is the same as that of the multidirectional displacement damping mechanisms (4) of the non-seam-spanning movable comb plate.

2. The multi-directional shifting damping toothed plate expansion joint according to claim 1, wherein a cross-joint movable toothed plate inclined plane (111) is formed at one side of the cross-joint movable toothed plate teeth (11) of the cross-joint movable toothed plate (1) facing the cross-joint movable toothed plate teeth matching cavity (22), and when the degree of the cross-joint movable toothed plate teeth (11) entering the cross-joint movable toothed plate teeth matching cavity (22) of the non-cross-joint movable toothed plate (2) reaches a limit, the cross-joint movable toothed plate inclined plane (111) shovels into the bottom surface of the non-cross-joint movable toothed plate (2) in a guiding state.

3. The multidirectional shifting damping tooth plate expansion joint according to claim 1, wherein a plurality of cross-seam movable comb tooth plate locking ring cavities (13) equal to the number of the cross-seam movable comb tooth plate multidirectional shifting damping mechanisms (3) are formed in the area of the cross-seam movable comb tooth plate (1) far away from the non-cross-seam movable comb tooth plate tooth matching cavity (12) and at the position corresponding to the cross-seam movable comb tooth plate multidirectional shifting damping mechanisms (3), a connecting bolt hole (131) of a multidirectional shifting damping mechanism of the seam crossing movable comb plate is arranged at the central position of the cavity bottom wall of the seam crossing movable comb plate locking ring cavity (13), the seam crossing movable comb plate multidirectional displacement damping mechanism (3) is located on one downward side of the seam crossing movable comb plate (1) in a longitudinal cantilever state at a position corresponding to a seam crossing movable comb plate multidirectional displacement damping mechanism connecting bolt hole (131) and is perpendicular to the seam crossing movable comb plate (1).

4. The expansion joint of multi-directional deflection damping tooth plate according to claim 3, wherein the number of the locking ring cavities (13) of the seam-crossing movable comb plate is a plurality of rows distributed at intervals along the length direction of the seam-crossing movable comb plate (1), and each row is a plurality.

5. The multi-directional deflection damping tooth plate expansion joint according to claim 1, wherein a non-seam-spanning movable comb plate locking ring cavity (23) is respectively formed on the non-seam-spanning movable comb plate (2) at the position of the non-seam-spanning movable comb plate teeth (21) and at the position corresponding to the region far away from the seam-spanning movable comb plate teeth matching cavity (22), a connecting bolt hole (231) of a multidirectional shifting damping mechanism of the non-seam-spanning movable comb plate is arranged at the central position of the cavity bottom wall of the locking ring cavity (23) of the non-seam-spanning movable comb plate, the non-seam-spanning movable comb plate multidirectional displacement damping mechanism (4) is located on one side, facing downwards, of the non-seam-spanning movable comb plate (2) in a longitudinal cantilever state at a position corresponding to a connecting bolt hole (231) of the non-seam-spanning movable comb plate multidirectional displacement damping mechanism and is perpendicular to the non-seam-spanning movable comb plate (2).

6. The multidirectional shifting damping tooth plate expansion joint according to claim 5, wherein the multidirectional shifting damping mechanism (4) of the non-seam-crossing movable comb plate comprises a shifting nut barrel (41), a shifting nut (42), a damping pad (43), an upper cover (44), a lower cover (45), a shifting nut connecting bolt (46) and a shearing column (47), the upper end of the shifting nut barrel (41) is welded and fixed with the downward side of the non-seam-crossing movable comb plate (2) at the position of the multidirectional shifting damping mechanism connecting bolt hole (231) of the non-seam-crossing movable comb plate on the cavity bottom wall corresponding to the locking ring cavity (23) of the non-seam-crossing movable comb plate, while the lower end of the shifting nut barrel (41) extends in the direction far away from the non-seam-crossing movable comb plate (2) in a longitudinal cantilever state and is perpendicular to the downward side of the non-seam-crossing movable comb plate (2), the deflection nut (42) is arranged in a deflection nut barrel cavity (411) of the deflection nut barrel (41) and is positioned between a damping pad (43) and a lower sealing cover (45), the damping pad (43) is also arranged in the deflection nut barrel cavity (411) and is positioned between an upper sealing cover (44) and the deflection nut (42), the upper sealing cover (44) and the lower sealing cover (45) are both positioned in the deflection nut barrel cavity (411) and are welded and fixed with a cavity wall of the deflection nut barrel cavity (411), a deflection nut connecting bolt (46) is screwed into the deflection nut (42) from top to bottom sequentially through a non-cross-seam movable comb plate multidirectional deflection damping mechanism connecting bolt hole (231) and an upper sealing cover bolt yielding hole (441) at the central position of the upper sealing cover (44) and a damping pad bolt yielding hole (431) at the central position of the damping pad (43), a shearing column (47) is simultaneously fixed with the surface of one side of the lower sealing cover (45) facing downwards and the one side of the deflection nut barrel (41) facing downwards and is fixed with the surface of the lower sealing cover (42) (45) The downward side is vertical, and in the using state, the shear column (47) is welded with the embedded steel bar (511) in the concrete right-side laying and pouring layer (51) which is laid and poured on the upper surface of the bridge girder body (5).

7. The multi-directional deflection damping toothed plate expansion joint according to claim 6, wherein one or more positioning pin upper part access holes (421) are opened at the lower part of the deflection nut (42), one or more positioning pin lower part access holes (451) are also opened at the position corresponding to the positioning pin upper part access holes (421) on the lower cover (45), and a rotation angle shearing positioning pin (48) is arranged between the positioning pin upper part access holes (421) and the positioning pin lower part access holes (451).

8. The multi-directional deflection damping toothed plate expansion joint according to claim 6, wherein a pair of cylindrical pin holes (412) are formed in the outer wall of the lower end of the deflection nut barrel (41), the cylindrical pin holes (412) are blind holes and are separated from each other by 180 degrees around the circumferential direction of the deflection nut barrel (41), a cylindrical rotation angle shearing positioning pin (4121) is welded and fixed in a horizontal cantilever state at the position corresponding to the cylindrical pin holes (412), and the cylindrical rotation angle shearing positioning pin (4121) is fixed with the embedded steel bar (511).

9. The expansion joint of the multi-directional shifting damping toothed plate according to claim 6, wherein a shifting nut connecting bolt check ring (232) is embedded in the locking ring cavity (23) of the non-bridging movable toothed plate, a hexagon socket (2321) is formed in the center of the shifting nut connecting bolt check ring (232), an outer hexagon head (461) is formed at the upper end of the shifting nut connecting bolt (46), and the outer hexagon head (461) is matched with the hexagon socket (2321).

10. The multi-directional shifting damping toothed plate expansion joint according to claim 9, wherein a C-shaped threaded hole (2322) which is communicated with the outside and extends from the upper part to the lower part of the shifting nut connecting bolt anti-back ring (232) in the thickness direction is formed at the edge part of the shifting nut connecting bolt anti-back ring (232), an anti-back ring anti-back limiting screw (23221) is screwed at the position corresponding to the C-shaped threaded hole (2322), and the anti-back ring anti-back limiting screw (23221) is in contact with the cavity wall of the non-span gap movable toothed plate locking ring cavity (23).

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