Telescopic device of highway bridge

Abstract

A telescopic device of a highway bridge comprises a supporting plate, a telescopic connecting assembly and a lifting connecting piece, the telescopic connecting assembly is in sliding connection with the vertical face of the highway bridge and the lower end face of the supporting plate, the highway bridge can stretch out and draw back left and right relative to the supporting plate through the telescopic connecting assembly, and the lifting connecting piece is fixed to the lower end face of the supporting plate. The lifting connecting piece is slidably connected with the transverse surface of the highway bridge, that is, the lower end of the lifting connecting piece can translate relative to the transverse surface, so that the lifting connecting piece is prevented from losing efficacy in the relative movement process of the highway bridge and the supporting plate, and it is guaranteed that the highway bridge can conduct vertical lifting motion and left-right telescopic motion relative to the supporting plate at the same time; and the supporting plates are connected with the ends of the highway bridges all the time, so that it is guaranteed that the supporting plates can protect abutted seams between the highway bridges all the time, large-particle stones and large-size garbage are effectively prevented from entering the abutted seams, and the safety of the bridges is improved.

Description

Technical Field

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

[0002] Most highway bridges have multi-section deck structures, and most of them have joints between adjacent deck structures. The joints between deck structures will cause changes in the heat and stress conditions of the bridge deck. Currently, most of the joints between bridges on the market are directly exposed on the road surface, which can easily allow large rocks and large volumes of garbage to fall into the joints, resulting in a decrease in the expansion and contraction of the joints, which can easily cause the overall deformation of the highway bridge and affect the stability of the highway bridge.

[0003] The utility model with application number CN201120210601.7 discloses a bridge expansion device used on urban rails, comprising vertical steel plates arranged in pairs with anchor bolts, a rubber body connected to the vertical steel plates is arranged between the vertical steel plates, the rubber body is connected to the top of the vertical steel plates, and the rubber body is wavy. The above bridge expansion device shields the expansion joint through the rubber body, but the service life of the rubber body is poor, the rubber body is easy to break, and it is still easy for large-grained stones and large-volume garbage to fall into the joint. Summary of the invention

[0004] In view of the above shortcomings, the technical problem to be solved by the utility model is to provide a telescopic device for a highway bridge, which is used to increase the service life of the telescopic device and can effectively prevent large-grained stones and large-volume garbage from entering the joints, thereby improving the safety of the bridge.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A telescopic device for a highway bridge, which is arranged between the joints of the highway bridge. The telescopic device includes a support plate, a telescopic connection assembly, and a lifting connection piece. The telescopic connection assembly is slidably connected to the highway bridge and the support plate. The lifting connection piece is fixed on the lower end surface of the support plate, and the lifting connection piece is slidably connected to the highway bridge, so that the highway bridge can be lifted and retracted relative to the support plate at the same time.

[0007] As a preferred solution of the utility model, the telescopic connection assembly includes a lifting sliding member slidably connected to the highway bridge and the support plate, a telescopic reset member slidably installed on the support plate, and a transition connection member connecting the lifting sliding member and the telescopic reset member. The lifting sliding member can slide relative to the support plate and the highway bridge at the same time, and the telescopic reset member applies a telescopic reset force to the lifting sliding member through the transition connection member.

[0008] As a preferred solution of the utility model, the lifting and sliding member includes a connecting rod and a connecting sliding rod slidably connected to the highway bridge and the support plate, and the connecting sliding rod is connected to the transition connecting member through the connecting rod.

[0009] As a preferred solution of the utility model, a vertical guide rod is provided on the highway bridge, and the connecting slide rod is slidably connected to the highway bridge through the vertical guide rod.

[0010] As a preferred solution of the utility model, a transverse guide rod is provided on the support plate, the connecting slide rod is slidably connected to the support plate through the transverse guide rod, and a first return spring is provided on the transverse guide rod, and a telescopic return force is applied to the connecting rod through the first return spring.

[0011] As a preferred solution of the utility model, the telescopic reset member includes a reset guide rod, a second reset spring and a reset rod. The reset rod is slidably connected to the support plate through the reset guide rod, and the second reset spring abuts against the reset rod, and a telescopic reset force is applied to the reset rod through the second reset spring.

[0012] As a preferred solution of the utility model, the transition connecting member includes a rotating shaft, a connecting plate and a rotating plate. The rotating shaft is fixedly connected to the lower end of the support plate through the connecting plate. The rotating plate is rotatably installed on the rotating shaft. One end of the rotating plate is connected to the lifting and sliding member, and the other end is abutted against the telescopic reset member.

[0013] As a preferred solution of the utility model, a slide groove is provided on the rotating plate, and the lifting and sliding member is connected to the rotating plate through the slide groove.

[0014] As a preferred solution of the utility model, the lifting connection member includes a telescopic rod, a lifting spring and a bottom plate, the bottom plate is connected to the support plate through the telescopic rod, and the lifting spring is respectively abutted between the bottom plate and the support plate.

[0015] As a preferred solution of the utility model, the end of the highway bridge is provided with a vertical surface and a horizontal surface, the telescopic connection assembly is slidably connected to the vertical surface, and the bottom of the lifting connection member abuts against the horizontal surface.

[0016] The beneficial effects of the utility model are as follows: (1) the support plate is used to shield the joints, thereby preventing large-grained stones and large-volume garbage from entering the joints, thereby improving the safety of the bridge.

[0017] (2) The highway bridge can move up and down and extend left and right relative to the support plate at the same time, ensuring that the support plate can stably prevent large-grained stones and large-volume garbage from entering the joints, thereby improving the stability of the telescopic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] Figure 2 yes Figure 1 Schematic diagram of the structure after rotating at a certain angle.

[0020] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model.

[0021] Figure 4 This is an enlarged schematic diagram of the structure at point A.

[0022] Figure 5 This is an enlarged schematic diagram of the structure at location B.

[0023] Figure numerals: highway bridge 1, vertical plane 1-1, horizontal plane 1-2, vertical guide rod 2, connecting slide rod 3, support plate 5, connecting plate 5-1, first return spring 6, connecting rod 7, rotating plate 8, slide groove 9, rotating shaft 10, return guide rod 11, return rod 12, second return spring 13, telescopic rod 14, bottom plate 15, lifting spring 16. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings.

[0025] A telescopic device for a highway bridge is provided with a vertical surface 1-1 and a horizontal surface 1-2 at the end of the highway bridge 1, that is, the end of the highway bridge 1 is an L-shaped structure. When two highway bridges 1 are spliced ​​together, a groove-shaped expansion joint structure is formed between adjacent highway bridges 1, and the telescopic device is installed in the expansion groove.

[0026] The telescopic device includes a support plate 5, a telescopic connection assembly, and a lifting connection member. The telescopic connection assembly is slidably connected to the vertical surface 1-1 of the highway bridge 1 and the lower end surface of the support plate 5. The telescopic connection assembly is used to enable the highway bridge 1 to be telescopically moved left and right relative to the support plate 5. The lifting connection member is fixed on the lower end surface of the support plate 5, and the lifting connection member is slidably connected to the transverse surface 1-2 of the highway bridge 1, that is, the lower end of the lifting connection member can be translated relative to the transverse surface 1-2 to prevent the lifting connection member from failing during the relative movement of the highway bridge 1 and the support plate 5, thereby ensuring that the highway bridge 1 can simultaneously perform vertical lifting movement and telescopic movement in the left and right directions relative to the support plate 5, so that the support plate 5 is always connected to the end of the highway bridge 1, thereby ensuring that the support plate 5 can always protect the joints between the highway bridges 1, effectively preventing large-grained stones and large-volume garbage from entering the joints, and improving the safety of the bridge.

[0027] The telescopic connection assembly includes a lifting sliding member, a telescopic reset member and a transition connecting member. The lifting sliding member is slidably connected to the highway bridge 1 and the support plate 5. The telescopic reset member is slidably installed on the support plate 5. The transition connecting member is used to connect the lifting sliding member and the telescopic reset member. The lifting sliding member can slide relative to the support plate 5 and the highway bridge 1 at the same time to ensure that the support plate 5 can perform vertical lifting movement and telescopic movement in the left and right directions relative to the highway bridge 1. The telescopic reset member applies a telescopic reset force to the lifting sliding member through the transition connecting member.

[0028] The lifting and sliding member includes a connecting rod 7 and a connecting slide rod 3. The connecting slide rod 3 is L-shaped. The two ends of the L-shaped connecting slide rod 3 are respectively slidably connected to the highway bridge 1 and the support plate 5, so that the connecting slide rod 3 can be lifted and lowered relative to the vertical plane 1-1, and the support plate 5 can slide relative to the connecting slide rod 3. The connecting rod 7 is fixedly connected to the bending part of the connecting slide rod 3, and the connecting rod 7 is connected to the transition connecting member.

[0029] In order to facilitate the sliding connection between the connecting slide rod 3 and the highway bridge 1, a slide groove is provided on the vertical surface 1-1, and a vertical guide rod 2 is provided in the slide groove. The connecting slide rod 3 is slidingly connected to the vertical surface 1-1 of the highway bridge 1 through the vertical guide rod 2.

[0030] In order to facilitate the sliding connection between the connecting slide rod 3 and the support plate 5, a slide groove is provided on the lower end surface of the support plate 5, and a transverse guide rod 4 is provided in the slide groove. The connecting slide rod 3 is slidingly connected to the support plate 5 through the transverse guide rod 4, and a first return spring 6 is provided on the transverse guide rod 4. The first return spring 6 is respectively in contact with the inner wall of the slide groove and the connecting slide rod 3, and a telescopic return force is applied to the connecting rod 7 through the first return spring 6 to drive the highway bridge 1 to move toward the support plate 5.

[0031] Telescopic reset members are respectively provided on both sides of the lifting slide, and the two telescopic reset members correspond to two transition connecting members respectively. The connecting rod 7 of the lifting slide is respectively connected to the two transition connecting members, so that the two telescopic reset members can provide reset force to the lifting slide at the same time, thereby ensuring the force balance of the lifting slide.

[0032] The telescopic reset member includes a reset guide rod 11, a second reset spring 13 and a reset rod 12. A guide groove is provided on the lower end surface of the support plate 5. The reset guide rod 11 is arranged in the guide groove. The reset rod 12 is slidably connected to the support plate 5 through the reset guide rod 11. The two ends of the second reset spring 13 respectively abut against the inner wall of the guide groove and the reset rod 12. The second reset spring 13 applies a telescopic reset force to the reset rod 12.

[0033] The transition connecting member includes a rotating shaft 10, a connecting plate 5-1 and a rotating plate 8. The rotating shaft 10 is fixedly connected to the bottom of the supporting plate 5 through the connecting plate 5-1. The rotating plate 8 can be rotatably installed on the rotating shaft 10. A slide groove 9 is provided on the rotating plate 8. The slide groove 9 is a waist-shaped hole. The connecting rod 7 of the lifting and sliding member is connected to one end of the rotating plate 8 through the slide groove 9, and the other end of the rotating plate 8 abuts on the telescopic reset member. When the distance between the supporting plate 5 and the highway bridge 1 becomes larger, the connecting rod 7 drives the rotating plate 8 to rotate, and the rotation of the rotating plate 8 drives the reset rod 12 to move. The second reset spring 13 generates a reset force on the reset rod 12, thereby driving the distance between the supporting plate 5 and the highway bridge 1 to decrease, which plays a role in bringing the supporting plate 5 and the highway bridge 1 closer and resetting.

[0034] The lifting connection includes a telescopic rod 14, a lifting spring 16 and a bottom plate 15. The bottom plate 15 is connected to the support plate 5 through the telescopic rod 14. The lifting spring 16 is respectively abutted between the bottom plate 15 and the support plate 5. The bottom plate 15 can slide relative to the horizontal surface 1-2 to ensure that the telescopic rod 14 is always in a vertical state.

[0035] The working principle of this telescopic device is as follows:

[0036] (1) Lifting and lowering of the support plate 5: The support plate 5 is forced to move downward, causing the connecting slide rod 3 to move downward along the vertical guide rod 2. At this time, the lifting spring 16 is compressed, and the lifting spring 16 provides a force for restoring the support plate 5, so that the support plate 5 is restored to its original position, ensuring that the upper end surface of the support plate 5 and the upper end surface of the highway bridge 1 are in the same plane, thereby preventing clothes from accumulating on the support plate 5.

[0037] (2) Extension and retraction of the support plate 5: The support plate 5 is extended and retracted relative to the highway bridge 1, so that the connecting slide rod 3 moves laterally along the transverse guide rod 4. At this time, the connecting rod 7 drives the rotating plate 8 to rotate, and the rotation of the rotating plate 8 drives the reset rod 12 to move. The second reset spring 13 generates a reset force on the reset rod 12, thereby driving the distance between the support plate 5 and the highway bridge 1 to decrease, so that the support plate 5 and the highway bridge 1 are reset close to each other, thereby preventing a large gap from being generated between the support plate 5 and the vertical surface 1-1.

[0038] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

[0039] Although this article uses more terms corresponding to the figure marks in the figures, it does not exclude the possibility of using other terms; these terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A telescopic device for a highway bridge, the telescopic device being arranged between joints of a highway bridge (1), characterized in that: The telescopic device comprises a support plate (5), a telescopic connection assembly, and a lifting connection piece. The telescopic connection assembly is slidably connected to the highway bridge (1) and the support plate (5). The lifting connection piece is fixed to the lower end surface of the support plate (5), and the lifting connection piece is slidably connected to the highway bridge (1), so that the highway bridge (1) can be lifted and retracted relative to the support plate (5) at the same time.

2. The expansion device for a highway bridge according to claim 1, characterized in that: The telescopic connection assembly comprises a lifting sliding member slidably connected to the highway bridge (1) and the support plate (5), a telescopic reset member slidably mounted on the support plate (5), and a transition connection member connecting the lifting sliding member and the telescopic reset member; the lifting sliding member can slide relative to the support plate (5) and the highway bridge (1) at the same time, and the telescopic reset member applies a telescopic reset force to the lifting sliding member via the transition connection member.

3. The expansion device for a highway bridge according to claim 2, characterized in that: The lifting and sliding member comprises a connecting rod (7) and a connecting sliding rod (3) slidably connected to the highway bridge (1) and the support plate (5); the connecting sliding rod (3) is connected to the transition connecting member via the connecting rod (7).

4. The expansion device for a highway bridge according to claim 3, characterized in that: A vertical guide rod (2) is provided on the highway bridge (1), and a connecting slide rod (3) is slidably connected to the highway bridge (1) via the vertical guide rod (2).

5. The expansion device for a highway bridge according to claim 3, characterized in that: A transverse guide rod (4) is provided on the support plate (5), the connecting slide rod (3) is slidably connected to the support plate (5) via the transverse guide rod (4), and a first return spring (6) is provided on the transverse guide rod (4), and a telescopic return force is applied to the connecting slide rod (3) via the first return spring (6).

6. The expansion device for a highway bridge according to claim 2, characterized in that: The telescopic reset member comprises a reset guide rod (11), a second reset spring (13) and a reset rod (12); the reset rod (12) is slidably connected to the support plate (5) via the reset guide rod (11); the second reset spring (13) abuts against the reset rod (12); and a telescopic reset force is applied to the reset rod (12) via the second reset spring (13).

7. The expansion device for a highway bridge according to claim 2, characterized in that: The transition connecting member comprises a rotating shaft (10), a connecting plate (5-1) and a rotating plate (8); the rotating shaft (10) is fixedly connected to the lower end of the supporting plate (5) via the connecting plate (5-1); the rotating plate (8) is rotatably mounted on the rotating shaft (10); one end of the rotating plate (8) is connected to the lifting sliding member, and the other end is in contact with the telescopic reset member.

8. The expansion device for a highway bridge according to claim 7, characterized in that: The rotating plate (8) is provided with a slide groove (9), and the lifting and sliding member is connected to the rotating plate (8) via the slide groove (9).

9. The expansion device for a highway bridge according to claim 1, characterized in that: The lifting connection member comprises a telescopic rod (14), a lifting spring (16) and a bottom plate (15); the bottom plate (15) is connected to the support plate (5) via the telescopic rod (14); and the lifting spring (16) is respectively abutted between the bottom plate (15) and the support plate (5).

10. The expansion device for a highway bridge according to claim 1, characterized in that: The end of the highway bridge (1) is provided with a vertical surface (1-1) and a horizontal surface (1-2); the telescopic connection component is slidably connected to the vertical surface (1-1); and the bottom of the lifting connection component abuts against the horizontal surface (1-2).

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