Low-noise reinforced cantilever telescopic device

Abstract

The utility model belongs to a bridge expansion device, and particularly relates to a low-noise reinforced cantilever expansion device. Comprising a main body structure and a water stop structure, the main body structure comprises a first cantilever plate and a second cantilever plate which are oppositely anchored in concrete structures on the two sides of the expansion joint and matched in shape at the adjacent positions, and the water stop structure is arranged in the expansion joint; and the adjoining part of the first cantilever plate and the second cantilever plate adopts a broken line shape and / or a curve in the same plane. The utility model effectively solves the problems in the prior art that the edge beam profile steel is difficult to bend and form, and the forming size is difficult to control. The device has the advantages of simple and reliable structure, easiness in molding and manufacturing, low production cost, low failure rate, long service life and the like.

Description

Technical Field

[0001] The utility model belongs to a bridge expansion device, in particular to a low-noise reinforced cantilever expansion device. Background Art

[0002] The expansion device is one of the important functional components of bridge engineering. In order to meet the needs of bridge beam deformation, a bridge expansion device is generally installed between the two ends of the bridge beam, between the beam end and the abutment, or at the hinged position of the bridge. During the operation of the bridge project, the creep caused by vehicle loads, the bridge's own materials and temperature, wind force, etc., will cause the bridge to shrink and stretch. In order to ensure safe and smooth driving of vehicles, the expansion device installed on the bridge must meet the various changes in the beam body.

[0003] The common expansion devices in bridge engineering mainly include modular expansion devices and comb-tooth plate expansion devices. The overall structure of the modular expansion device is welded, and the main structure is firm and not easy to damage, but its driving comfort is poor and the noise is obvious. The rubber waterstop is exposed, which is prone to garbage accumulation and waterstop damage. The comb-tooth plate expansion device has good driving comfort and low noise. The waterstop is located under the comb plate, and has good water-stopping performance and service life, but it is more prone to serious accidents such as broken connecting bolts and loose and falling comb plates. "General Technical Conditions for Highway Bridge Expansion Devices" (JT / T327-2016) puts forward clear requirements for the definition, classification, technical requirements and testing of expansion devices.

[0004] The background technologies searched by the applicant include:

[0005] The utility model patent with patent number 201420249185 discloses an impact-resistant and noise-reducing single-slit telescopic device, and its technical solution is: it includes two curved side beam steels, two anchor ribs and rubber sealing strips, the side beam steels are welded to the corresponding pre-buried steel bars in the reserved notches through the anchor ribs; the two side beam steels are respectively provided with sealing strip cavities, and the two sides of the rubber sealing strip are respectively fixed in the two sealing strip cavities; the first side beam steel and the second side beam steel are both curved. The above-mentioned problems with the prior art are that the overall C-shaped bent side beam steel is difficult to process, it is difficult to control the accurate size of the forming, and the processability and economy are poor.

[0006] Therefore, those skilled in the art are in urgent need of developing a telescopic device that can solve the above-mentioned problems. The applicant has not found any patent literature report that is identical or similar to the present utility model in the domestic patent database. Summary of the invention

[0007] The utility model provides a low-noise reinforced cantilever telescopic device, which can effectively solve the problems existing in the prior art that the side beam steel is difficult to bend and form, and the forming size is not easy to control.

[0008] The overall technical concept of the utility model is:

[0009] A low-noise reinforced cantilever telescopic device includes a main structure and a water-stop structure. The main structure includes a first cantilever plate and a second cantilever plate which are relatively anchored in the concrete structures on both sides of the expansion joint and have matching shapes at the adjacent parts. The water-stop structure is arranged in the expansion joint; the adjacent parts of the first cantilever plate and the second cantilever plate adopt a broken line shape and / or a curve located in the same plane.

[0010] The specific technical structure of the utility model is:

[0011] The main purpose of using a broken line and / or curve located in the same plane at the adjacent part of the first cantilever plate and the second cantilever plate is to ensure that the wheels do not pass through the expansion joint at the same time when the vehicle passes, thereby reducing noise. In order to facilitate the manufacture of components and meet corresponding technical requirements, a variety of technical implementation methods can be used for the curves located in the same plane, including but not limited to smooth curves and algebraic curves. The preferred technical implementation method is that the adjacent part of the first cantilever plate and the second cantilever plate adopts a continuous broken line or wave shape located in the same plane.

[0012] To prevent solid debris from falling into the water-stop structure, the preferred technical implementation method is to also include dust-proof plates respectively arranged under the first cantilever plate and the second cantilever plate and fitted together. The relatively arranged dust-proof plates can slide towards or away from each other with the movement of the first cantilever plate and the second cantilever plate.

[0013] In order to facilitate the fixation of the cantilever plate and the concrete structures on both sides of the expansion joint, the preferred technical implementation means starts with the first cantilever plate and the second cantilever plate being fixed to the concrete structures on both sides of the expansion joint through the anchoring structure in the installation groove.

[0014] In order to improve the structural strength of the device, facilitate the connection between adjacent components and transfer the load borne by the cantilever plate, the preferred technical implementation method is that the first cantilever plate and the second cantilever plate are fixed by the anchor structure in the concrete structure on both sides of the vertical plate and the expansion joint, the vertical plate is fixed to the lower surface of the first cantilever plate and the second cantilever plate along the length direction of the expansion joint, the reinforcing support plates are fixed at intervals along the length direction of the vertical plate, and the reinforcing support plates located below the first cantilever plate and the second cantilever plate are staggered and connected as a whole through the bottom plate, the vertical plate and the first cantilever plate and the second cantilever plate respectively.

[0015] In order to facilitate the assembly of the device and the expansion joint and simplify the assembly process, the preferred technical implementation method is to fix the vertical plate, the reinforced support plate, the bottom plate and the concrete structure on both sides of the expansion joint.

[0016] To facilitate the installation of the water-stop structure, the preferred technical implementation method is that the water-stop structure includes a mounting plate arranged along the length direction of the expansion joint, a rubber water-stop strip fixed at both ends to the inner side of the mounting plate, and the outer side of the mounting plate is fixed to the concrete structure on both sides of the expansion joint.

[0017] In order to improve the protective effect of the water-stop structure and extend the service life and maintenance-free period of the telescopic device, the preferred technical implementation method is that the rubber water-stop strip adopts at least two layers arranged vertically at intervals.

[0018] To facilitate the installation of the rubber waterstop, the preferred technical implementation method is that the rubber waterstop is fixed to the mounting plate by screws and pressure strips; or / and the rubber waterstop is fixed to the mounting plate by buckles and brackets.

[0019] In order to facilitate the discharge of accumulated water in the waterstop structure and reduce damage and corrosion to components, the preferred technical implementation method is to provide a water collector under the rubber waterstop, the material input end of the water collector is connected to the water output end of the rubber waterstop, and the material output end of the water collector is connected to the bridge drainage pipe.

[0020] The applicant needs to state:

[0021] In the description of the present invention, the terms "both sides", "lower surface", "two ends", "outside", "inside", "below", "output", "input" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of simplifying the description of the present invention, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0022] The technical progress achieved by the utility model is:

[0023] 1. The cantilever plates relatively arranged in the utility model adopt a broken line and / or curved structure that is adapted to each other and located in the same plane. First, when a vehicle passes, the wheels on the left and right sides do not roll over the middle gap at the same time, which is convenient for reducing driving vibration and noise; second, the impact strength of the driving load on the telescopic device is reduced, which is beneficial to improving the service life of the telescopic device; third, because the main structural parts are made of plate materials, they are cut and formed into the first cantilever plate and the second cantilever plate along the curved structure at one time, which is easy to process, has a short production cycle, and has a low production cost.

[0024] 2. The main structure adopts steel structure, which is connected as a whole through vertical plates, reinforced support plates and bottom plates. The structure is simple, strong and reliable, avoiding the risk of fatigue fracture of connecting bolts under reciprocating impact conditions and the resulting fall of steel structure.

[0025] 3. The vertical plate and the reinforced support plate effectively transfer the load borne by the panel. Firstly, the performance of the cantilever plate under the road load is improved, and the bending strength and flexural deformation of the panel are reduced. Secondly, the bottom plate is arranged at the bottom of the reinforced support plate along the length direction of the telescopic device to increase the contact pressure-bearing area between the telescopic device and the concrete structure below, so as to avoid the concrete structures on both sides of the telescopic device from being cracked or collapsed.

[0026] 4. The water-stopping structure of the multi-layer rubber water-stop strips arranged at longitudinal intervals effectively improves the protection and water-stopping performance.

[0027] 5. The structural design of the dustproof plate can prevent solid waste from falling into the water-stop structure and puncturing the rubber water-stop belt, effectively extending the service life of the water-stop structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings of the present utility model include:

[0029] Figure 1 It is a schematic diagram of the elevation structure of the utility model.

[0030] Figure 2 It is a schematic structural diagram of the utility model in which the adjacent part of the first and second cantilever plates is wavy.

[0031] Figure 3 It is a schematic structural diagram of the utility model in which the adjacent part of the first and second cantilever plates is in a broken line shape.

[0032] Figure 4 It is a schematic elevation diagram of the main structure with a dustproof plate.

[0033] Figure 5 It is a schematic diagram of a water-stop structure with multiple layers of rubber water-stop strips and water collectors.

[0034] Figure 6 It is a schematic diagram of the water-stop structure in which the rubber water-stop is fastened and installed by screws and pressure strips.

[0035] Figure 7 It is a schematic elevation view of the telescopic device installed in the mounting groove at the end of the beam.

[0036] The accompanying drawings of the present invention are as follows:

[0037] 1. Main structure; 1A. First cantilever plate; 1B. Vertical plate; 1C. Reinforced support plate; 1D. Bottom plate; 1E. Anchoring structure; 1F. Second cantilever plate; 1G. Dustproof plate; 2. Water-stop structure; 2A. Mounting plate; 2B. Rubber water-stop strip; 2C. Buckle; 2D. Bracket; 2E. Water collector; 2F. Pressure strip. DETAILED DESCRIPTION

[0038] The accompanying drawings show embodiments of the utility model. The embodiments of the utility model are further described below in conjunction with the accompanying drawings, but should not be understood as limiting the utility model. Any replacement of equivalent technical means made according to the specification does not depart from the protection scope of the utility model.

[0039] Example

[0040] The overall structure of this embodiment is shown in the figure. The low-noise reinforced cantilever telescopic device consists of a main structure 1 and a water-stop structure 2. The main structure includes a first cantilever plate 1A and a second cantilever plate 1F that are relatively anchored in the concrete structure on both sides of the expansion joint and have a shape matching at the adjacent parts. The water-stop structure 2 is arranged in the expansion joint; the adjacent parts of the first cantilever plate 1A and the second cantilever plate 1F are adopted as shown in the figure. Figure 3 The continuous broken line shape located in the same plane as shown; or Figure 2 The waves shown are located in the same plane.

[0041] The first cantilever plate 1A and the second cantilever plate 1F are provided below the first cantilever plate 1A and the second cantilever plate 1F and are fixedly attached to the first cantilever plate 1A and the second cantilever plate 1F. Figure 4 As shown, the dustproof plates 1G arranged opposite to each other can slide toward or against each other along with the movement of the first cantilever plate 1A and the second cantilever plate 1F.

[0042] The first cantilever plate 1A and the second cantilever plate 1F are fixed to the anchoring structure 1E in the concrete structure on both sides of the expansion joint through the vertical plate 1B. The vertical plate 1B is welded and fixed to the lower surface of the first cantilever plate 1A and the second cantilever plate 1F along the length direction of the expansion joint. The reinforcing support plates 1C are arranged at intervals along the length direction of the vertical plate 1B and are welded and fixed thereto. The reinforcing support plates 1C located below the first cantilever plate 1A and the second cantilever plate 1F are staggered and are welded and connected to the first cantilever plate 1A and the second cantilever plate 1F as a whole through the bottom plate 1D and the vertical plate 1B respectively.

[0043] The vertical plate 1B, the reinforced support plate 1C and the bottom plate 1D are fixed by the concrete in the installation groove and the anchor structure and the concrete structure on both sides of the expansion joint. Figure 1 , 4 , as shown in 7.

[0044] The water stop structure 2 includes a mounting plate 2A arranged along the length direction of the expansion joint, a rubber water stop strip 2B with both ends fixed to the inner side of the mounting plate 2A, and the outer side of the mounting plate 2A is fixed to the concrete structure on both sides of the expansion joint.

[0045] The rubber water stop 2B is provided with two layers spaced longitudinally, such as Figure 5 , 6 shown.

[0046] The rubber water stop 2B is fixed to the mounting plate 2A by screws and pressure strips 2F. Figure 6As shown; or / and the rubber water stop 2B is fixed to the mounting plate 2A through the buckle 2C, the bracket 2D, such as Figure 5 shown.

[0047] A water collector 2E is provided below the rubber water stop 2B, the material input end of the water collector 2E is connected to the water output end of the rubber water stop 2B, and the material output end of the water collector 2E is connected to the bridge drainage pipe, such as Figure 5 , 6 , as shown in 7.

Claims

1. A low-noise reinforced cantilever telescopic device, comprising a main structure (1) and a water-stop structure (2), wherein the main structure comprises a first cantilever plate (1A) and a second cantilever plate (1F) which are relatively anchored in the concrete structure on both sides of the expansion joint and have a shape matching at the adjacent parts, and the water-stop structure (2) is arranged in the expansion joint; characterized in that The adjacent parts of the first cantilever plate (1A) and the second cantilever plate (1F) are in the shape of a broken line and / or a curve located in the same plane.

2. The low-noise reinforced cantilever telescopic device according to claim 1 is characterized in that The adjacent portion of the first cantilever plate (1A) and the second cantilever plate (1F) is in a continuous fold line shape or a wave shape located in the same plane.

3. The low-noise reinforced cantilever telescopic device according to claim 1 is characterized in that It also includes dustproof plates (1G) respectively arranged below the first cantilever plate (1A) and the second cantilever plate (1F) and fitted together. The dustproof plates (1G) arranged opposite to each other can slide towards or against each other as the first cantilever plate (1A) and the second cantilever plate (1F) move.

4. The low-noise reinforced cantilever telescopic device according to claim 1, 2 or 3, characterized in that The first cantilever plate (1A) and the second cantilever plate (1F) are fixed to the concrete structures on both sides of the expansion joint via the anchoring structure (1E) in the installation groove.

5. The low-noise reinforced cantilever telescopic device according to claim 4 is characterized in that The first cantilever plate (1A) and the second cantilever plate (1F) are fixed to the anchoring structures (1E) in the concrete structure on both sides of the expansion joint through the vertical plate (1B); the vertical plate (1B) is fixed to the lower surface of the first cantilever plate (1A) and the second cantilever plate (1F) along the length direction of the expansion joint; the reinforcing support plates (1C) are fixed at intervals along the length direction of the vertical plate (1B); the reinforcing support plates (1C) located below the first cantilever plate (1A) and the second cantilever plate (1F) are staggered and connected to form a whole through the bottom plate (1D), the vertical plate (1B) and the first cantilever plate (1A) and the second cantilever plate (1F).

6. The low-noise reinforced cantilever telescopic device according to claim 5 is characterized in that The vertical plate (1B), the reinforced support plate (1C) and the bottom plate (1D) are fixed to the concrete structures on both sides of the expansion joint.

7. The low-noise reinforced cantilever telescopic device according to claim 1, 2, 3 or 5, characterized in that The water stop structure (2) comprises a mounting plate (2A) arranged along the length direction of the expansion joint, a rubber water stop strip (2B) with two ends fixed to the inner side of the mounting plate (2A), and the outer side of the mounting plate (2A) is fixed to the concrete structure on both sides of the expansion joint.

8. The low-noise reinforced cantilever telescopic device according to claim 7 is characterized in that The rubber water stop (2B) is provided in at least two layers which are arranged at intervals in a vertical direction.

9. The low-noise reinforced cantilever telescopic device according to claim 7, characterized in that The rubber water stop (2B) is fixed to the mounting plate (2A) by means of screws and pressure strips (2F); or / and the rubber water stop (2B) is fixed to the mounting plate (2A) by means of buckles (2C) and brackets (2D).

10. The low-noise reinforced cantilever telescopic device according to claim 7, characterized in that A water collector (2E) is arranged below the rubber water stop (2B); a material input end of the water collector (2E) is connected to a water output end of the rubber water stop (2B); and a material output end of the water collector (2E) is connected to a bridge drainage pipe.

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