Damping and dustproof bridge telescopic assembly

Abstract

The utility model discloses a shock-absorbing dustproof bridge telescopic component, which relates to the technical field of bridge telescopic components and comprises edge beam section steel fixed on two sections of bridges, a plurality of middle beam section steel arranged between the edge beam section steel on two sides, and a support part and a connecting plate connected to the top of one side of the middle beam section steel opposite to the edge beam section steel. The top of the connecting plate is provided with a damping plate, the top of the damping plate is connected with a dustproof plate making contact with the supporting part, water leakage holes are formed in the connecting plate at equal intervals, the bottom of the middle beam profile steel is connected with a chain plate transmission assembly, the bottom of one middle beam profile steel is connected with a cross beam, and the bottom of the other middle beam profile steel is connected with a chain plate transmission assembly. The chain plate transmission assemblies and the cross beams are arranged in a staggered mode. The damping and dustproof bridge telescopic assembly has the dustproof, damping and water guiding functions, meanwhile, the stability of a bridge is improved, and the situation that supporting is affected due to the fact that a single gap is too large is avoided.

Description

Technical Field

[0001] This utility model relates to the field of bridge expansion joint technology, and more specifically to a shock-absorbing and dust-proof bridge expansion joint. Background Technology

[0002] Bridge expansion joints, also known as bridge expansion components, are a crucial part of bridge structures. They allow the bridge deck to expand or contract in response to factors such as temperature changes, humidity, vehicle loads, and earthquakes. Without proper expansion joints, bridges may be damaged due to the thermal expansion and contraction of materials, potentially leading to structural failure.

[0003] Chinese patent application number 202323610986.8 discloses a bridge expansion joint, the structure of which includes a first expansion plate, a first fixed plate, the first fixed plate being fixedly connected below the first expansion plate, a second expansion plate, the second expansion plate being slidably connected to the right side of the first expansion plate, a second fixed plate, the second fixed plate being fixedly connected below the second expansion plate, a rubber strip, the left end of the rubber strip being fixedly connected to the bottom of the first fixed plate, the right end of the rubber strip being fixedly connected to the bottom of the second fixed plate, a support assembly, the support assembly being disposed below the first expansion plate, and a limiting assembly, the limiting assembly being disposed below the first expansion plate and the second expansion plate.

[0004] The bridge expansion joint still has the following problems during use:

[0005] 1. When the gap between two bridges is too large, the connecting parts on both sides alone cannot play a good connecting role. Some bridges will set an intermediate part between the two connecting parts, but the intermediate part will lack support capacity. At the same time, when it is shaken, it cannot maintain the synchronous displacement of the two sides.

[0006] 2. Due to the frequent passage of vehicles on the road, the bridge expansion joints will shake, which will cause noise at the connection points at both ends and cause sound pollution. In addition, the rubber strip at the bottom used to guide liquid is not easy to replace. Although some bridge expansion joints are equipped with structures that are easy to replace, the blocking structures at both ends cannot adapt well to the movement of the bridge.

[0007] Therefore, it is necessary to propose a bridge expansion joint that reduces vibration and prevents dust to solve the above problems. Utility Model Content

[0008] To address the above problems, this utility model provides a shock-absorbing and dust-proof bridge expansion joint, which has the capabilities of dustproofing, shock absorption, and water diversion, while also improving the stability during connection.

[0009] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0010] A bridge expansion joint with shock absorption and dust prevention includes side beam steel sections fixed to two bridge sections, multiple middle beam steel sections arranged between the side beam steel sections on both sides, a support part and a connecting plate connected to the top of the middle beam steel section opposite to the side beam steel section, a shock-absorbing plate provided on the top of the connecting plate, a dustproof plate in contact with the support part connected to the top of the shock-absorbing plate, drainage holes arranged at equal intervals on the connecting plate, a chain plate drive assembly connected to the bottom of the middle beam steel section, and a crossbeam connected to the bottom of one of the middle beam steel sections, the chain plate drive assembly and the crossbeam being arranged alternately;

[0011] A displacement box is provided on the outer side of the crossbeam. The displacement box is connected to the bottom of the side beam steel. The displacement box is connected to sliding blocks arranged symmetrically in the upper and lower parts. The upper and lower surfaces of both ends of the crossbeam are slidably connected to the sliding blocks. Side baffles are connected to both ends of the middle beam steel.

[0012] The bottom of the connecting plate is provided with a waterproof strip, which includes a curved strip and positioning strips at both ends of the curved strip. The positioning strip is provided with a protrusion at the top and a flat part at the bottom. The middle beam steel and the side beam steel are provided with cavities corresponding to the positioning strips.

[0013] Preferably, an anchor plate is connected to the side of the side beam steel away from the middle beam steel, and an installation groove is provided on the anchor plate.

[0014] Preferably, the shock-absorbing plate has outer baffles at both ends that contact the connecting plate, and the connecting plate has an inner baffle at one end.

[0015] Preferably, the top of the side beam steel and the middle beam steel is provided with anti-slip stripes, and one end of the support is provided with an inclined surface.

[0016] Preferably, one of the central beam steel sections has side baffles bolted to both ends, and the two ends of the side baffles extend to cover the side beam steel section.

[0017] Preferably, both ends of the side beam steel and the middle beam steel are bolted to have side baffles.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] 1. This device, by setting chain plate transmission components and crossbeams on the side beams and middle beams, enables multiple side beams and middle beams to move synchronously and provide stable support, thereby improving the stability of the bridge and preventing a single gap from being too large and affecting the support.

[0020] 2. This device uses a combination of shock-absorbing plates, dustproof plates, and waterproof strips. The shock-absorbing plates and dustproof plates have the functions of dust prevention and shock absorption, preventing foreign objects such as stones from entering the connection between the side beam steel and the middle beam steel and affecting the expansion joint. The waterproof strips have the function of guiding rainwater to both sides, improving drainage capacity, and at the same time preventing rainwater from entering the cavity, thus extending the service life of the side beam steel and the middle beam steel.

[0021] 3. Side baffles are installed at both ends of the central beam steel, which can be removed to replace the old waterproof strips and shock-absorbing plates, improving the convenience of replacement. At the same time, it does not affect the movement of the central beam steel and the side beam steel. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a single central beam steel section and a crossbeam structure in this utility model;

[0023] Figure 2 This is a schematic diagram of the structure of a single central beam steel section and chain plate transmission assembly in this utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the beam steel and chain plate transmission assembly of this utility model;

[0025] Figure 4 This is a schematic diagram of the side beam steel and waterproof sealing strip structure in this utility model;

[0026] Figure 5 This is a schematic diagram of multiple central beam steel sections and crossbeam structures in this utility model;

[0027] Figure 6 This is a schematic diagram of the structure of multiple central beam steel sections and chain plate transmission components in this utility model;

[0028] Figure 7 This is a schematic diagram of the central beam steel and side baffle structure in this utility model;

[0029] Figure 8 This is a top view of the multiple central beam steel sections and displacement box structure in this utility model;

[0030] Figure 9 This is a schematic diagram of the first type of side baffle in this utility model;

[0031] Figure 10 This is a schematic diagram of the second type of side baffle in this utility model.

[0032] Figure label:

[0033] 101. Side beam steel; 102. Middle beam steel; 103. Support part; 104. Connecting plate; 105. Shock-absorbing plate; 106. Dustproof plate; 107. Drain hole; 108. Chain plate transmission assembly; 109. Crossbeam; 110. Displacement box; 111. Sliding block; 112. Side baffle; 113. Cavity; 114. Waterproof strip; 115. Bending strip; 116. Positioning strip; 117. Protrusion; 118. Flat part; 119. Outer edge; 120. Inner edge; 121. Anchor plate; 122. Inclined surface. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Please see Figure 1-10 A bridge expansion joint for shock absorption and dust prevention includes side beam steel sections 101 fixed to two bridge sections. The side beam steel sections 101 are installed on one side of the bridge via an anchor plate 121. Multiple middle beam steel sections 102 are arranged between the two side beam steel sections 101. A support section 103 and a connecting plate 104 are connected to the top of the side beam steel section 102 opposite to the side beam steel sections 101. The support section 103 provides road surface support, and vehicles move on it. A shock-absorbing plate 105 is provided on the top of the connecting plate 104. Preferably, the shock-absorbing plate 105 is made of rubber and adapts to changes in pressure through elastic compression. To mitigate the swaying between the two bridges, the top of the damping plate 105 is connected to a dustproof plate 106 that contacts the support portion 103. Specifically, the damping plate 105 and the dustproof plate 106 are vulcanized together at high temperature. The connecting plate 104 has equally spaced drainage holes 107. When rainwater enters along the gap between the dustproof plate 106 and the support portion 103, it drips through the drainage holes 107 onto the waterproof rubber strip 114 at the bottom, guiding the rainwater towards both ends of the bridge, thus achieving drainage. The bottom of the central beam steel 102 is connected to a chain plate drive assembly 108. (The chain plate drive assembly 108 is referenced...) Figure 3It consists of multiple rotating shafts and connecting rods. Each rotating shaft is connected to the side beam steel 101 or the middle beam steel 102 to form multiple parallelograms, which are used to maintain synchronous movement between the side beam steel 101 and the middle beam steel 102, so that each gap can expand and contract in the same way. The bottom of one of the middle beam steel 102 is connected to a crossbeam 109. Specifically, when there is only one middle beam steel 102, the crossbeam 109 is connected to the bottom of the middle beam steel 102, and the two ends of the crossbeam 109 slide on the sliding blocks 111 on both sides, and the crossbeam 109 plays a supporting role. When there are multiple middle beam steel 102, the crossbeam 109 is connected to the bottom of the middle beam steel 102 near the middle position. The chain plate transmission assembly 108 and the crossbeam 109 are arranged alternately.

[0036] refer to Figure 1 and Figure 5 A displacement box 110 is provided on the outer side of the crossbeam 109. The displacement box 110 is fixedly connected to the bottom of the side beam steel 101 and also connected to the bridge at both ends. The displacement box 110 is connected to the bottom of the side beam steel 101. The displacement box 110 is internally connected to sliding blocks 111 arranged symmetrically on the upper and lower sides. The sliding blocks 111 are slidably connected to the crossbeam 109 and are used to support the middle beam steel 102. The upper and lower surfaces of both ends of the crossbeam 109 are slidably connected to the sliding blocks 111. The two ends of the middle beam steel 102 are connected to side baffles 112. The position of the side baffles 112 is referenced to... Figure 7 and Figure 8 ,like Figure 7 and Figure 8 This is a schematic diagram of the installation on the crash barrier. When the waterproof strip 114 needs to be replaced, the side baffle 112 is removed by unscrewing the bolts, and then the waterproof strip 114 and the shock absorber 105 are pulled out from both sides and replaced.

[0037] refer to Figure 4 The bottom of the connecting plate 104 is provided with a waterproof strip 114. The waterproof strip 114 has multiple bends, with downward bends for guiding rainwater. The waterproof strip 114 includes a curved strip 115 and positioning strips 116 at both ends of the curved strip 115. The positioning strip 116 has a protrusion 117 at the top and a flat portion 118 at the bottom. (See reference...) Figure 4 The protrusion 117 is higher than the connection between the positioning strip 116 and the curved strip 115, which can effectively prevent rainwater from entering the cavity 113. The middle beam steel 102 and the side beam steel 101 are provided with cavities 113 corresponding to the positioning strip 116, and the cavity 113 corresponds to the shape of the positioning strip 116.

[0038] Specifically, refer to Figures 1 to 6An anchor plate 121 is connected to the side of the side beam steel 101 away from the middle beam steel 102. The anchor plate 121 is used to connect with the steel reinforcement structure on the bridge, which improves the stability of the connection. An installation groove is provided on the anchor plate 121.

[0039] Specifically, refer to Figure 4 The shock absorber 105 has outer baffles 119 connected to both ends of the connecting plate 104. The inner baffles 120 and the outer baffles 119 are configured to cooperate with each other. The outer baffles 119 provide support and can slide on the two inner baffles 120. The inner baffles 120 restrict the position of the shock absorber 105 and prevent the shock absorber 105 from moving off the connecting plate 104. One end of the connecting plate 104 is provided with an inner baffle 120.

[0040] Specifically, refer to Figure 4 The top of the side beam steel 101 and the middle beam steel 102 are provided with anti-slip stripes to improve the friction when the vehicle moves. One end of the support part 103 is provided with an inclined surface 122 to improve the smoothness when the vehicle passes.

[0041] The following provides two structures for the side baffle 112: the first type, specifically, refer to Figure 9 One of the central beam steel sections 102 is bolted to both ends with side baffles 112. The two ends of the side baffles 112 extend to cover the side beam steel sections 101. One side baffle 112 is provided and fixed to the central beam steel section 102 near the middle position, and moves with the central beam steel section 102.

[0042] The second type, specifically, refers to... Figure 10 Both ends of the side beam steel 101 and the middle beam steel 102 are bolted to side baffles 112. Multiple side baffles 112 are provided and are all connected to one side of the side beam steel 101 and the middle beam steel 102.

[0043] In this embodiment, the side beam steel 101 at both ends is placed into the reserved slots on both sides of the bridge. Then, the anchor plate 121 is welded firmly to the embedded reinforcement, and concrete is poured to form the beam. During the use of the bridge, the bridge structure will deform under the influence of temperature changes, concrete shrinkage, load, settlement of piers and abutments and creep, etc., which will cause the beam to shift. At this time, the side beam steel 101 is integrated with the beam. The side beam steel 101 at both ends drives the middle beam steel 102 in the middle position to move through the chain plate transmission assembly 108. The chain plate transmission assembly 108 is used to maintain the synchronous contraction of multiple gaps. The crossbeam 109 plays the role of supporting the middle beam steel 102. When it is necessary to replace the shock absorber plate 105, dustproof plate 106 and waterproof strip 114, the side baffles 112 on both sides are removed by bolts, and then the old ones are pulled out and replaced with new ones.

[0044] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A bridge expansion joint for shock absorption and dust prevention, comprising side beam steel sections (101) fixed to two sections of a bridge, characterized in that: Multiple middle beams (102) are provided between the side beams (101) on both sides. The top of the middle beam (102) opposite to the side beams (101) is connected to a support (103) and a connecting plate (104). The top of the connecting plate (104) is provided with a shock-absorbing plate (105). The top of the shock-absorbing plate (105) is connected to a dustproof plate (106) that contacts the support (103). The connecting plate (104) is provided with equally spaced drainage holes (107). The bottom of the middle beam (102) is connected to a chain plate drive assembly (108). The bottom of one of the middle beams (102) is connected to a crossbeam (109). The chain plate drive assembly (108) and the crossbeam (109) are staggered. The outer side of the crossbeam (109) is provided with a displacement box (110), the displacement box (110) is connected to the bottom of the side beam steel (101), the interior of the displacement box (110) is connected with sliding blocks (111) arranged symmetrically above and below, the upper and lower surfaces of both ends of the crossbeam (109) are slidably connected to the sliding blocks (111), and the two ends of the middle beam steel (102) are connected with side baffles (112); The bottom of the connecting plate (104) is provided with a waterproof strip (114). The waterproof strip (114) includes a curved strip (115) and positioning strips (116) located at both ends of the curved strip (115). The positioning strip (116) is provided with a protrusion (117) at the top and a flat part (118) at the bottom. The middle beam steel (102) and the side beam steel (101) are provided with cavities (113) corresponding to the positioning strips (116).

2. The bridge expansion joint with shock absorption and dust prevention according to claim 1, characterized in that: An anchor plate (121) is connected to the side of the side beam steel (101) away from the middle beam steel (102), and the anchor plate (121) is provided with an installation groove.

3. The bridge expansion joint with shock absorption and dust prevention according to claim 1, characterized in that: The shock-absorbing plate (105) has outer baffles (119) at both ends that are in contact with the connecting plate (104), and one end of the connecting plate (104) is provided with an inner baffle (120).

4. A bridge expansion joint for shock absorption and dust prevention according to claim 1, characterized in that: The top of the side beam steel (101) and the middle beam steel (102) are provided with anti-slip stripes, and one end of the support part (103) is provided with a slope (122).

5. A bridge expansion joint for shock absorption and dust prevention according to claim 1, characterized in that: One of the central beam steel sections (102) is bolted to both ends with side baffles (112), the two ends of which extend to cover the side beam steel section (101).

6. A bridge expansion joint for shock absorption and dust prevention according to claim 1, characterized in that: Both ends of the side beam steel (101) and the middle beam steel (102) are bolted to side baffles (112).

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