Extending and retracting device for high-speed bridge

Abstract

A high-speed bridge expansion device effectively solves the problem of high maintenance cost. The two sides of the profile steel are connected with a bridge body, fixing plates extend out of the side faces of the opposite sides of the profile steel, telescopic plates are detachably connected to the upper portions of the fixing plates, a plurality of comb teeth are arranged on the adjacent side edges of the two telescopic plates at intervals, fixing pieces are arranged below the fixing plates, and waterproof rubber strips are connected to the fixing pieces. The two sides of the waterproof rubber strip slide on the two fixing pieces in the length direction respectively, and the length of the waterproof rubber strip is larger than the distance between the two fixing pieces. The telescopic structure is simple and ingenious in structure and convenient to use, the telescopic structure is convenient to mount and maintain by adopting a mode of combining the profile steel and the comb teeth, and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of expansion joints, in particular to an expansion device for a high-speed bridge. Background Art

[0002] In high-speed bridges, expansion joints are necessary connecting components. The main problems with current expansion joints are: they are difficult to install, maintenance is cumbersome, and components are difficult to replace, resulting in high maintenance costs. Utility Model Content

[0003] In order to overcome the defects of the prior art, the utility model provides a high-speed bridge expansion device, which effectively solves the problem of high maintenance cost.

[0004] The technical solution to the technical problem is: a high-speed bridge expansion device, including steel sections connected to the bridge body on both sides, a fixed plate extending from the side of the opposite side of the steel section, a expansion plate detachably connected above the fixed plate, a plurality of comb teeth are arranged at intervals on adjacent sides of the two expansion plates, a fixing piece is arranged below the fixed plate, a waterproof rubber strip is connected to the fixing piece, both sides of the waterproof rubber strip slide on the two fixing pieces respectively along the length direction, and the length of the waterproof rubber strip is greater than the distance between the two fixing pieces.

[0005] Preferably, a plurality of anchor bars are provided at the bottom of the steel section.

[0006] Preferably, a plurality of sliding blocks are provided at the bottom of the fixing plate, and a first sliding groove cooperating with the sliding blocks is provided above the fixing member.

[0007] Preferably, the fixing plate is provided with a plurality of mounting holes, the telescopic plate is provided with countersunk holes corresponding to the mounting holes, and the fixing piece is provided with fixing holes corresponding to the mounting holes.

[0008] Preferably, the waterproof rubber strip is provided with connecting pieces on both sides, a sliding bar is provided on the outside of the connecting piece, a horizontal second sliding groove is provided on the fixing piece, the sliding bar slides in the second sliding groove, and the length of the waterproof rubber strip and the connecting piece is less than the length of the fixing piece.

[0009] Preferably, a sealing gasket is provided on the top of the countersunk hole, and the sealing gasket has a mushroom-shaped structure and is interference fit with the countersunk hole.

[0010] The utility model has a simple and ingenious structure and is easy to use. The combination of steel sections and comb teeth makes the telescopic structure easy to install and maintain, thereby reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model.

[0012] Figure 2 It is a cross-sectional structural schematic diagram of the utility model.

[0013] Figure 3 It is a structural schematic diagram of the medium-sized steel of the utility model.

[0014] Figure 4 It is a schematic diagram of the bottom structure of the medium-sized steel of the utility model.

[0015] Figure 5 It is a structural schematic diagram of the fixing member in the utility model.

[0016] Figure 6 It is a structural schematic diagram of the waterproof rubber strip in the utility model.

[0017] Figure 7 It is a structural schematic diagram of the telescopic plate in the utility model. DETAILED DESCRIPTION

[0018] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0019] Depend on Figures 1 to 7 It can be known that a telescopic device for a high-speed bridge includes a steel section 1 connected to the bridge body on both sides, a fixed plate 2 extends from the side of the opposite side of the steel section 1, a telescopic plate 3 is detachably connected above the fixed plate 2, a plurality of comb teeth 4 are arranged at intervals on adjacent sides of the two telescopic plates 3, a fixing piece 5 is arranged below the fixed plate 2, a waterproof rubber strip 6 is connected to the fixing piece 5, and both sides of the waterproof rubber strip 6 slide on the two fixing pieces 5 along the length direction respectively, and the length of the waterproof rubber strip 6 is greater than the distance between the two fixing pieces 5.

[0020] When the utility model is used in a specific way,

[0021] After the overall assembly is completed, it is placed in the expansion joint reserved in the bridge body, the steel section 1 is fixed to the bridge body, the comb teeth 4 on the expansion plate 3 are plugged into each other to play a load-bearing role, and there are gaps between the comb teeth 4, which can ensure the stability of the connection when the bridge body is expanded or contracted horizontally or vertically. The waterproof rubber strip 6 is used to protect the steel sections 1 on both sides to avoid corrosion of the steel sections 1 by rainwater, and the length of the waterproof rubber strip 6 is greater than the distance between the two fixings 5, which ensures that it is always tightly connected between the two fixings 5 ​​when the bridge body is expanded or contracted to avoid leakage.

[0022] At the same time, both sides of the waterproof strip 6 can slide on the fixing member 5. When the bridge body is laterally extended or retracted, the side edges of the waterproof strip 6 slide relative to the fixing member 5, thereby ensuring the stability of the waterproof strip 6 itself and avoiding damage to the waterproof strip 6 by shear force.

[0023] During routine maintenance, when it is found that the waterproof rubber strip 6 is aged or the telescopic plate 3 is broken, it can be removed and replaced. The aged waterproof rubber strip 6 or telescopic plate 3 can be replaced to quickly complete the maintenance and reduce maintenance costs.

[0024] A plurality of anchor bars 7 are provided at the bottom of the steel section 1. After the equipment is assembled, the steel section 1 is fixed to the bridge body by the anchor bars 7.

[0025] A plurality of sliders 8 are arranged at the bottom of the fixing plate 2, and a first slide groove 9 cooperating with the slider 8 is arranged above the fixing member 5. The first slide groove 9 cooperates with the slider 8 so that the fixing member 5 and the steel section 1 can only slide in one direction, and the vertical height and lateral position are fixed.

[0026] The fixed plate 2 is provided with a plurality of mounting holes 10, the telescopic plate 3 is provided with countersunk holes 11 corresponding to the mounting holes 10, the fixing member 5 is provided with fixing holes 12 corresponding to the mounting holes 10, and screws are passed through the countersunk holes 11, the mounting holes 10 and the fixing holes 12 to connect, the fixing member 5 is fixed below the fixed plate 2, and the telescopic plate 3 is fixed above the fixed plate 2 to form an integrated structure.

[0027] Connecting pieces 13 are provided on both sides of the waterproof rubber strip 6, and a sliding bar 14 is provided on the outer side of the connecting piece 13. A horizontal second slide groove 15 is provided on the fixing piece 5, and the sliding bar 14 slides in the second slide groove 15. The length of the waterproof rubber strip 6 and the connecting piece 13 is less than the length of the fixing piece 5. Screws can be used to limit the sliding bar 14 at the end of the second slide groove 15 so that it slides inside the second slide groove 15 without slipping out of the range of the second slide groove 15. The length of the waterproof rubber strip 6 is greater than the distance between the two fixing pieces 5. Therefore, the waterproof rubber strip 6 is in a compressed state, the middle part of the waterproof rubber strip 6 is low and the two sides are high. After passing through the telescopic plate 3, rainwater gathers above the waterproof rubber strip 6 and can be discharged from the two ends of the waterproof rubber strip 6. The two sides of the waterproof rubber strip 6 are in contact with the fixing plate 2 and the fixing piece 5 to prevent rainwater from seeping in and protect the steel section 1.

[0028] A sealing gasket 16 is provided on the top of the countersunk hole 11. The sealing gasket 16 has a mushroom-shaped structure and is interference-fitted with the countersunk hole 11. The sealing gasket 16 is used to protect the screws to prevent the screws from being corroded and rainwater from entering the interior of the steel section 1 through the mounting hole 10 and causing damage to the steel section 1.

[0029] When performing maintenance, open the sealing gasket 16 and remove the screws so that the telescopic plate 3 and the fixing part 5 are in an active state. The telescopic plate 3 is removed from above the fixed plate 2. If the telescopic plate 3 is damaged, replace it with a new telescopic plate 3 to expose the gap between the two fixed plates 2. Operate the waterproof strip 6 and the fixing part 5 from the gap. The fixing part 5 is moved under the fixed plate 2 and taken out from the gap between the two fixed plates 2. After taking it out, the waterproof strip 6 can be replaced. After the maintenance is completed, it can be reassembled.

[0030] Compared with the prior art, the utility model has the following beneficial effects: the overall assembled structure is adopted, which is convenient for disassembly and assembly, and during the use of the bridge, it can be quickly disassembled and assembled for maintenance, reducing maintenance costs and saving maintenance time, thereby ensuring the normal use of the bridge and reducing the occurrence of accidents.

Claims

1. A high-speed bridge expansion device, characterized in that: The invention comprises a steel section (1) connected to a bridge body at two sides, a fixing plate (2) extending from the side opposite to the steel section (1), a telescopic plate (3) detachably connected to the top of the fixing plate (2), a plurality of comb teeth (4) being arranged at intervals on adjacent sides of the two telescopic plates (3), a fixing piece (5) being arranged below the fixing plate (2), a waterproof rubber strip (6) being connected to the fixing piece (5), two sides of the waterproof rubber strip (6) respectively sliding on the two fixing pieces (5) along the length direction, and the length of the waterproof rubber strip (6) being greater than the distance between the two fixing pieces (5).

2. A high-speed bridge expansion device according to claim 1, characterized in that: A plurality of anchor bars (7) are provided at the bottom of the steel section (1).

3. The high-speed bridge expansion device according to claim 1, characterized in that: A plurality of sliding blocks (8) are arranged at the bottom of the fixing plate (2), and a first sliding groove (9) cooperating with the sliding blocks (8) is arranged above the fixing member (5).

4. The high-speed bridge expansion device according to claim 1, characterized in that: The fixing plate (2) is provided with a plurality of mounting holes (10), the telescopic plate (3) is provided with countersunk holes (11) arranged corresponding to the mounting holes (10), and the fixing member (5) is provided with fixing holes (12) arranged corresponding to the mounting holes (10).

5. The high-speed bridge expansion device according to claim 1, characterized in that: The waterproof rubber strip (6) is provided with connecting pieces (13) on both sides, and a sliding bar (14) is provided on the outside of the connecting piece (13). The fixing piece (5) is provided with a horizontal second sliding groove (15), and the sliding bar (14) slides in the second sliding groove (15). The length of the waterproof rubber strip (6) and the connecting piece (13) is less than the length of the fixing piece (5).

6. The high-speed bridge expansion device according to claim 4, characterized in that: A sealing gasket (16) is provided at the top of the countersunk hole (11); the sealing gasket (16) has a mushroom-shaped structure and is interference-fitted with the countersunk hole (11).

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