阅读说明：本技术 多向变位阻尼齿板伸缩缝 (Multidirectional damping toothed plate expansion joint that shifts ) 是由 胡丰玲 姚宇 章世祥 钱雪明 薛根荣 于 2020-08-17 设计创作，主要内容包括：一种多向变位阻尼齿板伸缩缝,包括跨缝活动梳齿板和非跨缝活动梳齿板,在跨缝活动梳齿板的一侧边缘部有跨缝活动梳齿板齿,各相邻的跨缝活动梳齿板齿间的空间为非跨缝活动梳齿板齿配合腔,在非跨缝活动梳齿板的一侧边缘部有非跨缝活动梳齿板齿,各相邻的非跨缝活动梳齿板齿间的空间为跨缝活动梳齿板齿配合腔；跨缝活动梳齿板多向变位阻尼机构,设于跨缝活动梳齿板朝向下的一侧；特点：在非跨缝活动梳齿板上设有非跨缝活动梳齿板多向变位阻尼机构,跨缝活动梳齿板多向变位阻尼机构的结构与非跨缝活动梳齿板多向变位阻尼机构的结构相同。改善对抗受力大的变位运动能力；避免持久处于变位后无法恢复的状态；提高对抗瞬间冲击的变位能力；结构简练。(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.)

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 (45), 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 in sequence 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 one side of the lower sealing cover (45) facing downwards and one side of the deflection nut barrel (41) facing downwards and is fixed with the surface of the lower sealing cover (45) facing downwards and is fixed with the lower sealing cover and the downward side of the cover (45) is vertical, and in a use state, the shear column (47) is welded with embedded steel bars (511) in a concrete right-side paving and pouring layer (51) paved 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).

Technical Field

The invention belongs to the technical field of bridge components, and particularly relates to a multidirectional deflection damping toothed plate expansion joint.

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 invention aims to provide a multidirectional displacement damping expansion joint which is beneficial to obviously improving the displacement motion capability under the condition of large stress, avoiding the mutual collision of comb plates caused by excessive displacement, obviously improving the displacement motion capability of the comb plates, avoiding the comb plates from being in a permanently displaced state, effectively protecting the comb plates, ensuring the comb plates to be uniformly stressed, prolonging the service life within a reasonable period, and obviously improving the vibration resistance to instant impact and the like, so as to avoid the jumping of the comb plates and causing accidents.

The task of the invention is completed in such a way that the expansion joint of the multidirectional deflection 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.

In a specific embodiment of the present invention, a seam-spanning movable comb teeth inclined plane is formed on a side of the seam-spanning movable comb teeth of the seam-spanning movable comb plate facing the seam-spanning movable comb teeth matching cavity, and when the degree of the seam-spanning movable comb teeth entering the seam-spanning movable comb teeth matching cavity of the non-seam-spanning movable comb plate reaches a limit, the seam-spanning movable comb teeth inclined plane digs into the bottom surface of the non-seam-spanning movable comb plate in a guiding state.

In another specific embodiment of the invention, a seam-spanning movable comb plate locking ring cavity with the same number as the seam-spanning movable comb plate multidirectional displacement damping mechanisms is formed in a region where the seam-spanning movable comb plate is far away from the non-seam-spanning movable comb plate tooth matching cavity and in a position corresponding to the seam-spanning movable comb plate multidirectional displacement damping mechanisms, a seam-spanning movable comb plate multidirectional displacement damping mechanism connecting bolt hole is formed in the central position of the cavity bottom wall of the seam-spanning movable comb plate locking ring cavity, and the seam-spanning movable comb plate multidirectional displacement damping mechanism is located on one downward side of the seam-spanning movable comb plate in a longitudinal cantilever state and is perpendicular to the seam-spanning movable comb plate in a position corresponding to the seam-spanning movable comb plate multidirectional displacement damping mechanism connecting bolt hole.

In another specific embodiment of the present invention, the number of the lock ring cavities 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, and each row is a plurality.

In another specific embodiment of the present invention, a non-seam-spanning movable comb plate locking ring cavity is formed on the non-seam-spanning movable comb plate, at a position located on the non-seam-spanning movable comb plate teeth and at a position corresponding to a region away from the seam-spanning movable comb plate teeth matching cavity, a non-seam-spanning movable comb plate multi-directional displacement damping mechanism connecting bolt hole is formed in a central position of a cavity bottom wall of the non-seam-spanning movable comb plate locking ring cavity, and the non-seam-spanning movable comb plate multi-directional displacement damping mechanism is located on a downward side of the non-seam-spanning movable comb plate in a longitudinal cantilever state at a position corresponding to the non-seam-spanning movable comb plate multi-directional displacement damping mechanism connecting bolt hole and is perpendicular to the non-seam-spanning movable comb plate.

In yet another specific embodiment of the present invention, the non-seam-spanning 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 with the downward side of the non-seam-spanning movable comb plate multidirectional displacement damping mechanism connecting bolt hole on the cavity bottom wall corresponding to the non-seam-spanning movable comb plate locking ring cavity, the lower end of the displacement nut cylinder extends in the direction away from the non-seam-spanning movable comb plate in a longitudinal cantilever state and is perpendicular to the downward side of the non-seam-spanning movable comb plate, the displacement nut is arranged 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 arranged in the displacement nut cylinder cavity and is located between the upper cover and the displacement nut, go up the closing cap and all be located the nut section of thick bamboo intracavity that shifts and with the chamber wall welded fastening in nut section of thick bamboo chamber that shifts, the nut connecting bolt that shifts from top to bottom in proper order through the multidirectional damping mechanism connecting bolt hole that shifts of non-stride seam fishback and the damping pad bolt hole of stepping down of the upper cover bolt hole of the central point of upper cover, damping pad, the nut that shifts, the shearing post simultaneously with one side down of closing cap orientation and the nut section of thick bamboo that shifts one side fixed surface down and perpendicular with one side down of closing cap orientation, under the user state, should cut the post and be located to spread the concrete right side who waters at the upper surface of bridge body and spread the intraformational embedded steel bar welding firmly.

In a more specific embodiment of the present invention, one or more positioning pin upper access holes are formed in a lower portion of the displacement nut, one or more positioning pin lower access holes are also formed in the lower cover at positions corresponding to the positioning pin upper access holes, and a rotational angle shearing positioning pin is disposed between the positioning pin upper access holes and the positioning pin lower access holes.

In a further specific embodiment of the present invention, a pair of barrel pin holes are formed in an outer wall of a lower end of the shift nut barrel, the pair of barrel pin holes are blind holes and are separated from each other by 180 ° around a circumferential direction of the shift nut barrel, and a barrel rotation angle shearing positioning pin is welded and fixed to each of positions corresponding to the pair of barrel pin holes in a horizontal cantilever state, and the barrel rotation angle shearing positioning pin is fixed to the embedded steel bar.

In yet another specific embodiment of the present invention, a shifting nut connecting bolt retaining ring is embedded in the locking ring cavity of the non-span movable comb plate, 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.

In yet another specific embodiment of the present invention, a C-shaped threaded hole which is communicated with the outside and extends from the upper portion to the lower portion of the displacement nut connecting bolt anti-back ring in the thickness direction is formed at the edge portion of the displacement nut connecting bolt anti-back ring, and an anti-back ring anti-back limiting screw is screwed at a position corresponding to the C-shaped threaded hole and is in contact with the cavity wall of the non-span movable comb plate locking ring cavity.

According to the technical scheme provided by the invention, as the seam-crossing movable comb plate and the non-seam-crossing movable comb plate are respectively provided with the seam-crossing movable comb plate multidirectional displacement damping mechanism and the non-seam-crossing movable comb plate multidirectional displacement damping mechanism, the two comb plates have an active displacement motion function, the displacement motion capability under the condition of large resistance to 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 block 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 clearly understand the technical spirit and the advantages of the present invention, the applicant below describes in detail by way of example, but the description of the example is not intended to limit the technical scope of the present invention, and any equivalent changes made according to the present inventive concept, which are merely in form and not in material, 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.

The technical key points of the technical scheme provided by the invention are as follows: 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 45, 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 multidirectional 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.

In conclusion, the technical scheme provided by the invention overcomes the defects in the prior art, successfully completes the invention task and truly realizes the technical effects of the applicant in the technical effect column.