Bridge expansion joint device for bridge

Abstract

The utility model provides a bridge expansion joint device for a bridge. The bridge expansion joint device comprises a bridge body, and a plurality of expansion joints which are through up and down and spaced left and right are arranged in the bridge body. An embedded groove with an opening facing is formed in the position, close to the expansion joint, of the bridge body, two telescopic shells which are oppositely arranged left and right are arranged in the embedded groove, and the two telescopic shells are connected in an inserted mode and used for displacement of the bridge body; two moving blocks which are spaced left and right are arranged between the two telescopic shells, an elastic belt is fixedly arranged between the two moving blocks, the elastic belt is used for enabling the two moving blocks to move in the opposite or back-to-back direction, an adjusting mechanism capable of driving the moving blocks to move is arranged in each telescopic shell, and the adjusting mechanisms are used for adjusting the distance between the two moving blocks. The device is suitable for expansion joints with different widths; and under the action of the adjusting mechanism, the movable block can be driven to move, so that the distance between the expansion joints is adjusted, the expansion joints with different widths can be adapted, and the purpose of improving the overall stability of the bridge body is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge expansion joints, in particular to a bridge expansion joint device used for bridges. Background Art

[0002] Bridge expansion joint: refers to the expansion joint usually set between the two beam ends, between the beam end and the abutment, or at the hinged position of the bridge to meet the requirements of bridge deformation. The expansion joint is required to be able to freely expand and contract in both directions parallel and perpendicular to the bridge axis, and to be firm and reliable. When vehicles pass through, they should be smooth, without sudden jumps and noise; they should be able to prevent rainwater and garbage and soil from infiltrating and blocking; installation, inspection, maintenance, and removal of dirt should be simple and convenient. At the expansion joint, the railings and the bridge pavement should be disconnected to adjust the displacement and connection between the superstructure caused by vehicle loads and bridge construction materials. Once the expansion device of the skew bridge is damaged, it will seriously affect the speed, comfort and safety of driving, and even cause driving safety accidents.

[0003] Existing bridge expansion joints are not convenient for users to install according to needs, and are difficult to adjust according to the installation gap between two bridge piers. Utility Model Content

[0004] The utility model aims to provide a bridge expansion joint device for a bridge, aiming to solve the problem that the existing bridge expansion joints in the prior art are inconvenient for users to install according to needs and difficult to adjust according to the installation gap between two bridge piers.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical solution: the bridge expansion joint device for a bridge comprises a bridge body, wherein the bridge body is provided with a plurality of expansion joints which are transparent from top to bottom and spaced from left to right;

[0006] An embedding groove with an opening facing in the direction is provided on the bridge body near the expansion joint, and two telescopic housings are provided in the embedding groove and are arranged opposite to each other on the left and right sides. The two telescopic housings are plugged into each other to move the bridge body;

[0007] Two movable blocks spaced apart from each other are provided between the two telescopic shells, and an elastic belt is fixed between the two movable blocks. The elastic belt is used to move the two movable blocks in relative or opposite directions. An adjustment mechanism capable of driving the movable blocks to move is provided in each telescopic shell. The adjustment mechanism is used to adjust the spacing between the two movable blocks to adapt to expansion joints of different widths.

[0008] Preferably, the adjustment mechanism comprises a bidirectional lead screw and a connecting plate extending in the front-rear direction, and opposite sides of the two telescopic housings are provided with receiving grooves with openings facing opposite directions;

[0009] The front and rear ends of the bidirectional lead screw are rotatably arranged in the receiving groove, and each of the bidirectional lead screws is transmission-connected to two front and rear relatively arranged top closure components, the top closure components are hingedly connected to the connecting plate, and the connecting plate is fixedly connected to the moving block to drive the moving block to move left and right.

[0010] Preferably, the top closing assembly comprises a transmission block and a swing rod, wherein the transmission block is sleeved on the bidirectional lead screw and is threadedly connected to the bidirectional lead screw;

[0011] The swing rod is rotatably arranged on the transmission block, and the swing rod is hingedly connected to the connecting plate.

[0012] Preferably, the telescopic housing includes a connector and a receiving member, the connector is fixedly arranged on the top of the receiving member, the receiving groove is opened inside the receiving member, and the bidirectional lead screw is rotatably arranged on the inner side wall of the receiving member.

[0013] Preferably, a plurality of short rods spaced front-to-back and extending in the left-to-right direction are fixedly provided on opposite sides of two adjacent connectors, a groove is formed between the two adjacent short rods, and the short rods on one of the connectors are inserted into the groove of the adjacent connector.

[0014] Preferably, the left and right sides of the elastic band are fixedly mounted on the moving block, and the elastic band is located in the expansion joint in an arc-shaped state;

[0015] The multiple expansion joints divide the bridge body into multiple bridge sections that are spaced apart from each other. When two adjacent bridge sections move, they are used to squeeze or stretch the elastic bands to adapt to the deformation of the bridge sections.

[0016] Preferably, the telescopic shell is provided with a plurality of through holes which are spaced front to back and are transparent up to down, the embedding groove is provided with a threaded hole with an opening facing upward, a stud is inserted into the threaded hole, and the stud passes through the through hole and is threadedly connected with a nut.

[0017] The beneficial effects are: 1. Under the action of the adjustment mechanism, the moving block can be driven to move, thereby adjusting the spacing of the expansion joints, so that it can adapt to expansion joints of different widths, thereby achieving the purpose of improving the overall stability of the bridge body.

[0018] 2. Through the plug-in connection of the storage parts, there is no need to pre-embed steel bars during the installation process, the construction is convenient and quick, and the expansion joints are covered, making the overall stability higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall rear view of a specific embodiment of the utility model.

[0020] Figure 2 It is a structural schematic diagram of a partial cross-section of a storage member in a specific embodiment of the utility model.

[0021] Figure 3 In the specific embodiment of the utility model Figure 2 A is an enlarged structural diagram of FIG.

[0022] Figure 4 It is a structural schematic diagram of the adjustment mechanism transmission in a specific embodiment of the utility model.

[0023] In the figure: 1, bridge section; 2, expansion joint; 3, embedded groove; 4, telescopic shell; 401, connector; 402, storage part; 5, adjustment mechanism; 501, bidirectional screw; 502, connecting plate; 6, moving block; 7, elastic band; 8, storage groove; 9, top retracting assembly; 901, transmission block; 902, swing rod; 10, short rod; 11, groove; 12, stud; 13, nut. DETAILED DESCRIPTION

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

[0025] like Figure 1-Figure 4 As shown, a bridge expansion joint device for a bridge includes a bridge body, in which a plurality of expansion joints 2 which are transparent from top to bottom and spaced apart from left to right are arranged. The arrangement of the plurality of expansion joints 2 on the bridge body can adapt to deformation of the bridge deck, extend the service life of the bridge, and improve driving safety.

[0026] An embedding groove 3 with an opening facing toward the bridge body is provided near the expansion joint 2, and two telescopic shells 4 arranged opposite to each other on the left and right are provided in the embedding groove 3. The telescopic shells 4 are placed in the embedding groove 3, and then the studs 12 and the bridge section 1 are connected to each other. The two telescopic shells 4 are plugged into each other for the displacement of the bridge body. When the bridge body moves, it will drive the two adjacent telescopic shells 4 to move in opposite directions, so that the two telescopic shells 4 are plugged into each other.

[0027] The telescopic shell 4 includes a connector 401 and a storage member 402. Since the storage member 402 includes a top plate and a trough body, the top plate and the trough body are detachably connected. When the adjustment mechanism 5 needs to be adjusted, the top plate can be removed for operation. When no operation is required, the top plate can be installed on the trough body. The connector 401 is fixed on the top of the storage member 402. Under the setting of the connector 401, the gap between the original bridge sections 1 can be covered, so that the overall stability is higher, and no special pre-embedded anchor steel bars are required, and the construction is convenient. The storage groove 8 is opened inside the storage member 402, and the bidirectional screw 501 is rotatably arranged on the inner wall of the storage member 402.

[0028] A plurality of short rods 10 spaced front-to-back and extending in the left-to-right direction are fixedly provided on opposite sides of two adjacent connectors 401, and a groove 11 is formed between the two adjacent short rods 10. The short rods 10 on one connector 401 are inserted into the groove 11 of the adjacent connector 401. When the bridge section 1 moves, the short rods 10 on the corresponding connector 401 are driven to be inserted into the groove 11 of the adjacent connector 401, thereby enhancing the stability of the overall structure and also having higher strength and load-bearing capacity.

[0029] Two movable blocks 6 spaced apart from each other are provided between the two telescopic shells 4, and an elastic belt 7 (the elastic belt 7 is a rubber belt) is fixed between the two movable blocks 6. The elastic belt 7 is used to move the two movable blocks 6 in relative or opposite directions. Since the elastic belt 7 has good elasticity and aging resistance, it can rebound the displaced bridge section 1.

[0030] Under the action of the adjustment mechanism 5, the moving block 6 can be driven to move, so as to adjust the spacing of the expansion joint 2, so as to adapt to expansion joints 2 of different widths, thereby achieving the purpose of improving the overall stability of the bridge body. Specifically, each telescopic shell 4 is provided with an adjustment mechanism 5 that can drive the moving block 6 to move. The adjustment mechanism 5 is used to adjust the spacing between the two moving blocks 6 to adapt to expansion joints 2 of different widths. If the width of the expansion joint 2 is too small, it may not be able to meet the displacement requirements of the bridge section 1 under extreme weather conditions, resulting in increased structural stress and increased risk of cracking or damage; on the contrary, if the width of the expansion joint 2 is too large, although it can provide a larger displacement space, it may reduce the overall stability of the bridge section 1, especially in the case of severe vibrations such as earthquakes, and the appropriate width of the expansion joint 2 helps to maintain the integrity of the bridge section 1 and extend its service life.

[0031] The left and right sides of the elastic band 7 are fixed on the moving block 6 , and the elastic band 7 is located in the expansion joint 2 in an arc-shaped state.

[0032] A plurality of expansion joints 2 divide the bridge body into a plurality of bridge sections 1 spaced apart on the left and right. When two adjacent bridge sections 1 move, they are used to extrude or stretch the elastic band 7 to adapt to the deformation of the bridge section 1. When two adjacent bridge sections 1 contract, the elastic band 7 will be squeezed to play a buffering role.

[0033] The adjustment mechanism 5 includes a bidirectional lead screw 501 and a connecting plate 502 extending in the front-to-back direction. The two telescopic shells 4 are each provided with a receiving groove 8 with an opening facing opposite to each other. One of the bidirectional lead screws 501 is fixedly connected to a bevel gear set, and the bevel gear set is fixedly connected to a handle, so that turning the handle can drive the bevel gear set to rotate, and when the bevel gear set rotates, it can drive the bidirectional lead screw 501 to rotate.

[0034] The front and rear ends of the bidirectional lead screw 501 are rotatably arranged in the storage groove 8. Each bidirectional lead screw 501 is transmission-connected to two front and rear relatively arranged top closure components 9. The top closure components 9 are hingedly connected to the connecting plate 502, and the connecting plate 502 is fixedly connected to the moving block 6 to drive the moving block 6 to move left and right. When the bidirectional lead screw 501 rotates, it can drive the two top closure components 9 to move in relative or opposite directions. When the two top closure components 9 move in relative directions, the moving block 6 can be pushed out, and when the two top closure components 9 move in opposite directions, the moving block 6 can be retracted inward.

[0035] The top closing assembly 9 includes a transmission block 901 and a swing rod 902 . The transmission block 901 is sleeved on the bidirectional lead screw 501 and is threadedly connected to the bidirectional lead screw 501 .

[0036] The swing rod 902 is rotatably arranged on the transmission block 901, and the swing rod 902 is hingedly connected to the connecting plate 502. When the bidirectional screw 501 rotates, it can drive the two transmission blocks 901 to move in relative or opposite directions, and during the movement, it can drive the swing rod 902 to rotate, so that the moving block 6 moves.

[0037] The telescopic shell 4 is provided with a plurality of through holes which are spaced front to back and transparent up and down. The top of the telescopic shell 4 is provided with a placement groove which opens upwards. The placement groove and the through hole are interconnected. When the nut 13 is screwed on the stud 12, it is in the groove, so that the nut 13 does not protrude from the bridge section 1, thereby avoiding the unevenness of the bridge surface. The embedding groove 3 is provided with a threaded hole which opens upwards. The stud 12 is inserted in the threaded hole, and the stud 12 passes through the through hole and is threadedly connected with the nut 13. The stud 12 passes through the through hole and is threadedly connected with the threaded hole, so that the telescopic shell 4 and the bridge section 1 are connected to each other through the stud 12. After passing through, the nut 13 is screwed on the stud 12.

[0038] Working principle: When in use, first dig out the embedding groove 3, then place the telescopic housing 4 in the embedding groove 3, and then connect the stud 12 and the bridge section 1 to each other. The stud 12 passes through the through hole and is threadedly connected to the threaded hole, so that the telescopic housing 4 and the bridge section 1 are connected to each other through the stud 12. After passing through, screw the nut 13 on the stud 12, open the top plate, and turn the handle to drive the bevel gear set to rotate. When the bevel gear set rotates, it can drive the bidirectional screw 501 to rotate. When the bidirectional screw 501 rotates, it can drive the two transmission blocks 901 to move in opposite or opposite directions, and during the movement During the adjustment process, the swing rod 902 can be driven to rotate, so that the moving block 6 is moved. After adjustment, the elastic band 7 is located in the expansion joint 2 between the two bridge sections 1. If the width of the expansion joint 2 is too small, it may not be able to meet the displacement requirements of the bridge section 1 under extreme weather conditions, resulting in increased structural stress and increased risk of cracking or damage. On the contrary, if the width of the expansion joint 2 is too large, although a larger displacement space can be provided, the overall stability of the bridge section 1 may be reduced, especially in the event of severe vibrations such as earthquakes. In addition, a suitable width of the expansion joint 2 helps to maintain the integrity of the bridge section 1 and extend its service life.

[0039] After the width of the expansion joint 2 is adjusted according to the bridge section 1, the top plate and the trough body are connected to each other. Then, with the setting of the connector 401, the gap between the original bridge sections 1 can be covered, so that the overall stability is higher, and no special pre-embedded anchor steel bars are required, which makes the construction convenient. Moreover, when the bridge section 1 moves, it will drive the short rod 10 on the corresponding connector 401 to be inserted into the groove 11 of the adjacent connector 401, so that the stability of the overall structure can be enhanced, and it also has higher strength and bearing capacity.

[0040] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is limited by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A bridge expansion joint device for a bridge, characterized in that: It comprises a bridge body, wherein the bridge body is provided with a plurality of expansion joints (2) which are transparent from top to bottom and spaced from left to right; An embedding groove (3) with an opening facing in the direction of the bridge body is provided at a position close to the expansion joint (2), and two telescopic housings (4) arranged opposite to each other on the left and right are provided in the embedding groove (3), and the two telescopic housings (4) are plugged into each other to allow the bridge body to move; Two movable blocks (6) spaced apart from each other are provided between the two telescopic shells (4), an elastic band (7) is fixedly provided between the two movable blocks (6), and the elastic band (7) is used to move the two movable blocks (6) in opposite directions. An adjustment mechanism (5) capable of driving the movable blocks (6) to move is provided in each of the telescopic shells (4), and the adjustment mechanism (5) is used to adjust the spacing between the two movable blocks (6) to adapt to expansion joints (2) of different widths.

2. The bridge expansion joint device for a bridge according to claim 1, characterized in that: The adjustment mechanism (5) comprises a bidirectional lead screw (501) and a connecting plate (502) extending in the front-rear direction, and opposite sides of the two telescopic housings (4) are provided with receiving grooves (8) with openings facing opposite directions; The front and rear ends of the bidirectional lead screw (501) are rotatably arranged in the receiving groove (8), and each of the bidirectional lead screws (501) is drivingly connected to two front and rear oppositely arranged top closure assemblies (9), the top closure assemblies (9) are hingedly connected to the connecting plate (502), and the connecting plate (502) is fixedly connected to the moving block (6) to drive the moving block (6) to move left and right.

3. The bridge expansion joint device for a bridge according to claim 2, characterized in that: The top closing assembly (9) comprises a transmission block (901) and a swing rod (902); the transmission block (901) is sleeved on the bidirectional lead screw (501) and is threadedly connected to the bidirectional lead screw (501); The swing rod (902) is rotatably mounted on the transmission block (901), and the swing rod (902) is hingedly connected to the connecting plate (502).

4. The bridge expansion joint device for a bridge according to claim 3, characterized in that: The telescopic housing (4) comprises a plug-in component (401) and a storage component (402); the plug-in component (401) is fixedly arranged on the top of the storage component (402); the storage groove (8) is provided inside the storage component (402); and the bidirectional lead screw (501) is rotatably arranged on the inner side wall of the storage component (402).

5. The bridge expansion joint device for a bridge according to claim 4, characterized in that: A plurality of short rods (10) spaced apart from each other and extending in the left-right direction are fixedly disposed on opposite sides of two adjacent connectors (401), and a groove (11) is formed between the two adjacent short rods (10), wherein the short rods (10) on one of the connectors (401) are inserted into the groove (11) of the adjacent connector (401).

6. The bridge expansion joint device for a bridge according to claim 1, characterized in that: The left and right sides of the elastic band (7) are fixedly mounted on the moving block (6), and the elastic band (7) is located in an arc-shaped state within the expansion joint (2); The plurality of expansion joints (2) divide the bridge body into a plurality of bridge sections (1) spaced apart from each other on the left and right. When two adjacent bridge sections (1) move, they are used to squeeze or stretch the elastic bands (7) to adapt to the deformation of the bridge sections (1).

7. The bridge expansion joint device for a bridge according to claim 1, characterized in that: The telescopic housing (4) is provided with a plurality of through holes which are spaced front to back and are transparent from top to bottom, the embedding groove (3) is provided with a threaded hole with an opening facing upward, a stud (12) is inserted into the threaded hole, and the stud (12) passes through the through hole and is threadedly connected to a nut (13).

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