Telescopic structure and bridge

Abstract

The utility model provides a telescopic structure and a bridge, and relates to the technical field of bridges, the telescopic structure provided by the utility model comprises a frame and a plurality of connecting plates, the frame is provided with a telescopic gap along a first direction, and the frame is used for being detachably connected with a road surface; the multiple connecting plates are sequentially arranged in the frame in the second direction, the second direction is perpendicular to the first direction, one end of each connecting plate is connected with the frame, every two adjacent connecting plates are oppositely arranged in a staggered mode, a first sliding groove is formed in one of the opposite side surfaces of every two adjacent connecting plates in the first direction, and a second sliding groove is formed in the other side surface of every two adjacent connecting plates in the second direction. The other one is provided with a rolling assembly which extends into the first sliding groove and is in rolling fit with the first sliding groove. According to the telescopic structure, abrasion between relative movement surfaces of the two connecting plates can be reduced, the service life of the telescopic structure is prolonged, meanwhile, when the telescopic structure is damaged and needs to be replaced, a bridge deck roadbed does not need to be damaged, and the dismounting effect is better.

Description

Technical Field

[0001] The utility model relates to the technical field of bridges, in particular to a telescopic structure and a bridge. Background Art

[0002] A bridge expansion joint is a telescopic structure installed between the two beam ends, between the beam ends and the abutments, or at the hinged position of the bridge in order to adapt to the deformation of the bridge deck of highway and railway bridges. It is also called an expansion joint in the industry. However, this expansion joint is directly fixed in the bridge deck roadbed. When replacing it, the bridge deck roadbed needs to be destroyed, affecting the disassembly effect. In addition, the sliding contact of the cross parts between the expansion joints can easily cause surface wear and affect its service life. Utility Model Content

[0003] The utility model aims to provide a telescopic structure, which can reduce the wear between the relatively moving surfaces of the two connecting plates and extend the service life of the telescopic structure. At the same time, when the telescopic mechanism is damaged and needs to be replaced, there is no need to destroy the bridge deck and roadbed, and the disassembly effect is better.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] In a first aspect, the utility model provides a telescopic structure, comprising a frame and a plurality of connecting plates:

[0006] The frame has a telescopic gap along a first direction, and the frame is used for detachably connecting with the road surface;

[0007] A plurality of connecting plates are arranged in sequence in the frame along a second direction, the second direction is perpendicular to the first direction, one end of each connecting plate is connected to the frame, and two adjacent connecting plates are arranged in reverse and staggered manner, and one of the opposite side surfaces of two adjacent connecting plates is provided with a first slide groove along the first direction, and the other is provided with a rolling component extending into the first slide groove and rollingly cooperating with the first slide groove.

[0008] Furthermore, the rolling assembly includes a rod body and a rotating ball, the rod body has an oil storage tank for storing lubricating oil, one end of the rod body is connected to the connecting plate, the other end extends into the first slide groove and the bottom is rotatably connected to the rotating ball, the part of the rotating ball located in the rod body is connected to the oil storage tank, and the part of the rotating ball protruding from the rod body is rollingly matched with the first slide groove.

[0009] Furthermore, an oil inlet communicating with the oil storage tank is provided at the top end of the rod body, and a plug is detachably connected to the oil inlet.

[0010] Furthermore, the oil storage tank is bent into an L-shape, one end of the oil storage tank is connected to the oil inlet, and the other end of the oil storage tank is connected to the rotating ball.

[0011] Furthermore, the frame includes a first connecting frame and a second connecting frame, the first connecting frame and the second connecting frame are arranged relative to each other along the first direction and form the telescopic gap, the first connecting frame and the second connecting frame are both connected to a plurality of the connecting plates, and the connecting plates connected to the first connecting frame and the connecting plates connected to the second connecting frame are arranged in reverse and staggered manner.

[0012] Furthermore, the first connecting frame and the second connecting frame each include a frame body and a pressure plate, the frame body is provided with a plurality of card slots, the plurality of card slots are correspondingly engaged with the plurality of connecting plates on the frame body, each of the card slots has an opening for engaging the connecting plate engaged therewith, the pressure plate is connected to the frame plate body, and the pressure plate is used to close each of the openings to limit the position of each of the connecting plates relative to the card slot engaged therewith.

[0013] Further, the card slot extends along a third direction, the third direction is perpendicular to the first direction and the second direction, and one end of the card slot along the third direction has the opening.

[0014] Furthermore, the frame body has a top surface in the third direction recessed with a receiving groove for receiving a pressure plate, the pressure plate is detachably connected to the receiving groove, and the bottom surface of the receiving groove is provided with the openings of each of the card slots.

[0015] Furthermore, the frame is provided with a connecting hole, and the connecting hole is used for a connecting member to pass through so as to detachably connect the frame to the road surface.

[0016] In a second aspect, the utility model further provides a bridge, comprising a bridge body and the telescopic structure described in the above scheme, wherein the frame is detachably connected to the road surface of the bridge body.

[0017] The telescopic structure and bridge provided by the utility model can produce the following beneficial effects:

[0018] The telescopic structure provided by the first aspect of the utility model connects the frame to the road surface when in use. When the spacing between the road surfaces changes along the first direction, relative rolling occurs between two adjacent connecting plates, so that the telescopic gap of the frame changes adaptively. At the same time, due to the rolling friction between the two adjacent connecting plates, the friction between the two connecting plates can be reduced, the wear between the relatively moving surfaces is reduced, and the life of the telescopic structure is extended.

[0019] When the telescopic mechanism is damaged and needs to be replaced, the frame can be directly removed from the road surface. Compared with the traditional telescopic structure directly fixed in the bridge deck and roadbed, there is no need to destroy the bridge deck and roadbed, and the disassembly effect is better.

[0020] Compared with the prior art, in the bridge provided in the second aspect of the utility model, the frame and the road surface are detachably connected, which facilitates the disassembly and replacement of the telescopic structure and has better performance and effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 An exploded view of a telescopic structure provided by an embodiment of the utility model when it cooperates with a bridge body;

[0023] Figure 2 An exploded view of a local structure of a telescopic structure provided by an embodiment of the utility model;

[0024] Figure 3 A three-dimensional structural schematic diagram of a partial structure of a telescopic structure provided by an embodiment of the utility model;

[0025] Figure 4 for Figure 3 A local enlarged schematic diagram of point A;

[0026] Figure 5 A cross-sectional view of the connection between a transfer ball and a rod body in a rolling assembly provided by an embodiment of the utility model;

[0027] Figure 6 A schematic diagram of a three-dimensional structure when the end of a connecting plate is aligned with a card slot provided in an embodiment of the utility model;

[0028] Figure 7 A schematic diagram of the three-dimensional structure of a telescopic structure provided by an embodiment of the utility model when in use.

[0029] Icons: 1-frame; 11-first connecting frame; 111-frame body; 1111-slot; 1112-opening; 1113-accommodating slot; 112-pressing plate; 1121-through hole; 113-locking piece; 12-second connecting frame; 121-second slide slot; 13-connecting hole; 2-connecting plate; 21-first slide slot; 22-rolling assembly; 221-rod body; 2211-oil storage tank; 2212-first connecting part; 2213-second connecting part; 2214-first mounting cavity; 222-rotating ball; 23-plug; 24-connecting block; 3-bridge body. DETAILED DESCRIPTION

[0030] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0034] The first aspect of the present invention provides a telescopic structure. Figure 1 and Figure 2 As shown, it includes a frame 1 and a plurality of connecting plates 2:

[0035] The frame 1 has a telescopic gap along a first direction, and the frame 1 is used for detachably connecting with the road surface;

[0036] A plurality of connecting plates 2 are arranged in sequence in the frame 1 along a second direction, the second direction being perpendicular to the first direction, one end of each connecting plate 2 being connected to the frame 1, and two adjacent connecting plates 2 being arranged in reverse and staggered relation, and one of the opposite side surfaces of the two adjacent connecting plates 2 is provided with a first slide groove 21 along the first direction, and the other is provided with a rolling component 22 extending into the first slide groove 21 and rollingly cooperating with the first slide groove 21.

[0037] refer to Figure 1, the frame 1 has a telescopic gap along the first direction, when the distance of the road surface changes in the first direction, such as Figure 2 As shown, relative rolling occurs between two adjacent connecting plates 2, causing the telescopic gap of the frame 1 to change adaptively. In this process, due to the rolling friction generated between the two adjacent connecting plates 2, the friction between the two connecting plates 2 can be reduced, the wear between the relatively moving surfaces can be reduced, and the life of the telescopic structure can be extended.

[0038] Continue to refer Figure 1 When the telescopic mechanism is damaged and needs to be replaced, the frame 1 can be directly removed from the road surface. Compared with the traditional telescopic structure directly fixed in the bridge deck and roadbed, there is no need to destroy the bridge deck and roadbed, and the disassembly effect is better.

[0039] In two adjacent connecting plates 2 , the rolling cooperation between the rolling assembly 22 and the first sliding groove 21 can be achieved through a variety of structures.

[0040] In an optional embodiment, the rolling assembly 22 may include a support shaft and a roller connected to the support shaft via a bearing, the roller being located in the first slide groove 21 and rollingly engaged with the first slide groove 21, that is, when in use, the roller can roll in the first slide groove 21, thereby reducing the friction between the rolling assembly 22 and the first slide groove 21.

[0041] In other optional embodiments, such as Figure 3 and Figure 4 As shown, the rolling assembly 22 includes a rod body 221 and a rotating ball 222. The rod body 221 has an oil storage tank 2211 for storing lubricating oil. One end of the rod body 221 is connected to the connecting plate 2, and the other end extends into the first slide groove 21. The bottom of the end of the rod body 221 extending into the first slide groove 21 is rotatably connected with the rotating ball 222. The part of the rotating ball 222 located in the rod body 221 is connected to the oil storage tank 2211, and the part of the rotating ball 222 protruding from the rod body 221 rolls with the first slide groove 21.

[0042] When relative movement occurs between two adjacent connecting plates 2, the rod body 221 on one connecting plate 2 rolls with the first slide groove 21 on the other connecting plate 2 through the rotating ball 222. During the rolling process of the rotating ball 222, since the part of the rotating ball 222 located inside the rod body 221 is connected to the oil storage tank 2211, the lubricating oil can adhere to the surface of the rotating ball 222, thereby reducing the friction between the rotating ball 222 and the rod body 221 and the friction between the rotating ball 222 and the first slide groove 21.

[0043] It should also be noted that the rotating ball 222 can also support the connecting plate 2 . One end of the connecting plate 2 is connected to the frame 1 , and both sides of the other end of the connecting plate 2 can be connected to the rod body 221 .

[0044] In an optional embodiment, the rotating ball 222 can rotate relative to the rod body 221 in any direction. In order to facilitate the installation of the rotating ball 222, as shown in FIG. Figure 4 and Figure 5 As shown, the rod body 221 may include a first connecting portion 2212 and a second connecting portion 2213, the first connecting portion 2212 is recessed with a first mounting cavity 2214, and the second connecting portion 2213 is recessed with a second mounting cavity. After the first connecting portion 2212 is connected to the second connecting portion 2213, the first mounting cavity 2214 and the second mounting cavity are snapped together to form a limiting cavity for limiting the position of the rotating ball 222, and the first mounting cavity 2214 and the second mounting cavity are symmetrically arranged about the snapping surface.

[0045] When installing the rotating ball 222, the rotating ball 222 can be first installed in the first installation cavity 2214, and then the second connecting portion 2213 is fixedly connected to the first connecting portion 2212. Figure 5 As shown, the first connecting portion 2212 and the second connecting portion 2213 can hold the middle of the rotating ball 222 , the top of the rotating ball 222 is located in the oil storage tank 2211 , and the bottom of the rotating ball 222 extends out of the rod body 221 .

[0046] Of course, in other optional embodiments, the process used for installing the rotating ball 222 and the rod body 221 can also be similar to the installation process of the steel ball on a ballpoint pen. The rod body 221 is heated to a certain temperature so that the diameter of the bowl mouth of the rod body 221 on which the rotating ball 222 is installed expands due to the heat to a diameter larger than the diameter of the rotating ball 222. The rotating ball 222 is then pressed into the bowl mouth of the rod body 221. After cooling, the diameter of the bowl mouth shrinks and the rotating ball 222 will not fall out.

[0047] In an optional embodiment, in order to facilitate personnel to add lubricating oil into the oil storage tank 2211, the top of the rod body 221 is provided with an oil inlet connected to the oil storage tank 2211. Figure 4 As shown, a plug 23 is detachably connected to the oil inlet.

[0048] The plug 23 can realize the opening and closing of the oil storage bin 2211, thereby making it convenient for personnel to add and replenish lubricating oil.

[0049] Specifically, the stopper 23 can be a rubber stopper.

[0050] In an optional embodiment, if Figure 4 As shown, the oil storage tank 2211 is bent into an L shape, one end of the oil storage tank 2211 is connected to the oil inlet, and the other end is connected to the rotating ball 222. People can add lubricating oil from the oil inlet of the oil storage tank 2211, and the lubricating oil can be attached to the rotating ball 222 from the other end.

[0051] In an optional embodiment, in order to facilitate the processing of the oil storage bin 2211, the oil storage bin 2211 may also be in a straight line shape, in which case the oil storage bin 2211 preferably extends vertically.

[0052] Of course, the extended shape of the oil storage tank 2211 is not limited to the above two types, and any oil storage tank 2211 that can store lubricating oil and can communicate with the rotating ball 222 can be used.

[0053] In an optional embodiment, if Figure 1 As shown, in order to make the structure of the frame 1 simpler, the frame 1 includes a first connecting frame 11 and a second connecting frame 12, the first connecting frame 11 and the second connecting frame 12 are arranged relatively spaced apart along a first direction and form a telescopic gap, the first connecting frame 11 and the second connecting frame 12 are both connected to a plurality of connecting plates 2, and the connecting plates 2 connected to the first connecting frame 11 and the connecting plates 2 connected to the second connecting frame 12 are arranged in reverse and staggered manner.

[0054] Specifically, the first connection frame 11 and the second connection frame 12 may both be in a “C” shape, and the first connection frame 11 and the second connection frame 12 are respectively connected to the surfaces of two road surfaces that are spaced apart.

[0055] Specifically, each connection plate 2 on the first connection frame 11 is evenly spaced along the second direction, and each connection plate 2 on the second connection frame 12 is evenly spaced along the second direction. The connection plate 2 on the first connection frame 11 extends between two adjacent connection plates 2 on the second connection frame 12, or extends between the second connection frame 12 and the connection plate 2 at the outermost edge thereof, and any connection plate 2 on the second connection frame 12 extends between two adjacent connection plates 2 on the first connection frame 11, or extends between the first connection frame 11 and the connection plate 2 at the outermost edge thereof.

[0056] like Figure 2 As shown, a second slide groove 121 is provided on the inner wall of at least one of the first connecting frame 11 and the second connecting frame 12 . The second slide groove 121 extends along the first direction and is used for rolling cooperation with the rolling assembly 22 on the adjacent connecting plate 2 .

[0057] In an optional embodiment, if Figure 2 As shown, to facilitate the connection of the connecting plate 2 , the first connecting frame 11 and the second connecting frame 12 both include a frame body 111 and a pressing plate 112 .

[0058] Taking the first connecting frame 11 as an example: a plurality of card slots 1111 are provided on the frame body 111, and the plurality of card slots 1111 are correspondingly connected with the plurality of connecting plates 2 on the frame body 111 one by one, and each card slot 1111 has an opening 1112 for the connecting plate 2 connected thereto to be inserted, and the pressure plate 112 is connected to the frame 1 plate body.

[0059] When installing the connecting plate 2, first cancel the connection between the pressing plate 112 and the frame body 111, then insert one end of the connecting plate 2 into the slot 1111 from the opening 1112 of the slot 1111, the slot 1111 limits the position of the connecting plate 2 relative to the frame body 111 along a first direction, then connect the pressing plate 112 to the frame body 111, the pressing plate 112 closes each opening 1112, and limits the position of each connecting plate 2 relative to the frame body 111 along the extension direction of the slot 1111.

[0060] In an optional embodiment, if Figure 6 As shown, the card slot 1111 extends along a third direction, which is perpendicular to the first direction and the second direction, and the top end of the card slot 1111 along the third direction has an opening 1112 .

[0061] The above arrangement enables each connecting plate 2 to be against the bottom end of the slot 1111 under the action of gravity, and the pressure plate 112 can limit the position of each connecting plate 2 relative to the frame body 111 along the third direction, thereby making the position of the connecting plate 2 in the third direction more stable.

[0062] In an optional embodiment, if Figure 6 As shown, the end of the connecting plate 2 has a connecting block 24 that extends into the slot 1111 and matches the shape of the slot 1111 .

[0063] The cross section of the slot 1111 may be in a dovetail shape, a T shape, or the like.

[0064] In an optional embodiment, if Figure 6 As shown, the cross section of the slot 1111 is T-shaped, and correspondingly, the cross section of the connecting block 24 is also T-shaped.

[0065] In an optional embodiment, if Figure 6 As shown, to prevent the pressing plate 112 from protruding from the frame body 111 , the frame body 111 is provided with a receiving groove 1113 on the top surface in the third direction for receiving the pressing plate 112 , and the bottom surface of the receiving groove 1113 is provided with openings 1112 of each slot 1111 .

[0066] The above arrangement can reduce the height of the pressing plate 112 and prevent the pressing plate 112 from protruding from the top surface of the frame body 111, thereby causing the top surface of the telescopic assembly to be uneven.

[0067] In a preferred embodiment, the top surface of the pressing plate 112 is flush with the top surface of the frame body 111 .

[0068] In an optional embodiment, in order to facilitate the replacement of each connecting plate 2, the pressing plate 112 can be detachably connected to the accommodating groove 1113.

[0069] The pressing plate 112 and the receiving groove 1113 may be connected by bolts, or by snap-fitting, etc.

[0070] In an optional embodiment, if Figure 2 As shown, a through hole 1121 is opened on the pressing plate 112 , and the locking member 113 can pass through the through hole 1121 and extend into the frame body 111 to be connected with the frame body 111 , thereby realizing a detachable connection between the pressing plate 112 and the frame body 111 .

[0071] The locking member 113 may be a bolt.

[0072] In an optional embodiment, if Figure 1 As shown, the frame 1 is provided with a connecting hole 13, and the connecting piece can pass through the connecting hole 13 and extend into the road surface to be connected to the bridge body 3, thereby realizing a detachable connection between the frame 1 and the road surface.

[0073] The connecting piece may be a bolt.

[0074] The second aspect of the present invention provides a bridge. Figure 7 As shown, the bridge provided by the embodiment of the second aspect of the utility model includes a bridge body 3 and the above-mentioned telescopic structure, and the frame 1 is detachably connected to the road surface of the bridge body 3.

[0075] Compared with the prior art, in the bridge provided by the embodiment of the second aspect of the utility model, the frame 1 and the road surface are detachably connected, which facilitates the disassembly and replacement of the telescopic structure and has better performance and effect.

[0076] In an optional embodiment, when the frame 1 is used and installed, the frame 1 is fixed to the road surface using a connector and a corresponding tool. When the distance between the road surfaces changes, the telescopic gap of the telescopic structure is adaptively changed under the relative movement between the connecting plates 2, and the friction between the connecting plates 2 is reduced under the cooperation of the first slide groove 21 and the rolling assembly 22. When the connecting plates 2 are replaced individually or as a whole, the locking member 113 on the pressing plate 112 can be removed using a tool, and the pressing plate 112 and the receiving groove 1113 are separated, so that the connecting plate 2 slides in the card groove 1111, and the disassembly of the connecting plate 2 is completed. When installing the connecting plate 2, the reverse operation can be performed.

[0077] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A telescopic structure, characterized in that: It comprises a frame (1) and a plurality of connecting plates (2): The frame (1) has a telescopic gap along a first direction, and the frame (1) is used for being detachably connected to a road surface; A plurality of the connecting plates (2) are sequentially arranged in the frame (1) along a second direction, the second direction being perpendicular to the first direction, one end of each of the connecting plates (2) being connected to the frame (1), and two adjacent connecting plates (2) being arranged in an opposite and staggered manner, one of the opposite side surfaces of the two adjacent connecting plates (2) being provided with a first slide groove (21) along the first direction, and the other being provided with a rolling component (22) extending into the first slide groove (21) and rollingly cooperating with the first slide groove (21).

2. The telescopic structure according to claim 1, characterized in that: The rolling assembly (22) comprises a rod body (221) and a rotating ball (222); the rod body (221) has an oil storage bin (2211) for storing lubricating oil; one end of the rod body (221) is connected to the connecting plate (2); the other end of the rod body (221) extends into the first slide groove (21) and the bottom is rotatably connected to the rotating ball (222); the portion of the rotating ball (222) located in the rod body (221) is connected to the oil storage bin (2211); the portion of the rotating ball (222) protruding from the rod body (221) is in rolling cooperation with the first slide groove (21).

3. The telescopic structure according to claim 2, characterized in that: An oil inlet communicating with the oil storage tank (2211) is provided at the top end of the rod body (221), and a plug (23) is detachably connected to the oil inlet.

4. The telescopic structure according to claim 3, characterized in that: The oil storage bin (2211) is bent into an L shape, one end of the oil storage bin (2211) is connected to the oil inlet, and the other end is connected to the rotating ball (222).

5. The telescopic structure according to claim 1, characterized in that: The frame (1) comprises a first connection frame (11) and a second connection frame (12); the first connection frame (11) and the second connection frame (12) are arranged relative to each other at a distance along a first direction and form the telescopic gap; the first connection frame (11) and the second connection frame (12) are both connected to a plurality of the connection plates (2); and the connection plates (2) connected to the first connection frame (11) and the connection plates (2) connected to the second connection frame (12) are arranged in an inversely staggered manner.

6. The telescopic structure according to claim 5, characterized in that: The first connecting frame (11) and the second connecting frame (12) both comprise a frame body (111) and a pressure plate (112); the frame body (111) is provided with a plurality of slots (1111); the plurality of slots (1111) are correspondingly engaged with a plurality of connecting plates (2) on the frame body (111); each of the slots (1111) has an opening (1112) for engaging the connecting plate (2) engaged therewith; the pressure plate (112) is connected to the frame (1) plate body; the pressure plate (112) is used to close each of the openings (1112) to limit the position of each of the connecting plates (2) relative to the slots (1111) engaged therewith.

7. The telescopic structure according to claim 6, characterized in that: The card slot (1111) extends along a third direction, the third direction being perpendicular to the first direction and the second direction, and one end of the card slot (1111) along the third direction has the opening (1112).

8. The telescopic structure according to claim 7, characterized in that: The frame body (111) is provided with a receiving groove (1113) on the top surface in the third direction for receiving the pressure plate (112); the pressure plate (112) is detachably connected to the receiving groove (1113); and the bottom surface of the receiving groove (1113) is provided with the openings (1112) of each of the card slots (1111).

9. The telescopic structure according to any one of claims 1 to 8, characterized in that: The frame (1) is provided with a connection hole (13), and the connection hole (13) is used for a connection piece to pass through so as to detachably connect the frame (1) to the road surface.

10. A bridge, characterized in that: It comprises a bridge body (3) and a telescopic structure as claimed in any one of claims 1 to 9, wherein the frame (1) is detachably connected to the road surface of the bridge body (3).

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