One-way sliding support for bridge connection

Abstract

The utility model aims to provide the one-way sliding support for bridge connection, which is simple in structure and avoids locking failure after plastic deformation. The sliding block is matched with the base in a sliding mode, the fixing plate is fixedly connected to the upper end of the sliding block, a sliding seat is formed on the base, a groove matched with the sliding block in a sliding mode is formed in the middle of the sliding seat, sliding grooves matched with the sliding block in a guiding mode are formed in the two sides of the groove, and the fixing plate is fixedly connected to the upper end of the sliding block. A baffle matched with the fixing plate in a limiting mode is formed on one side of the sliding seat, a first guide groove matched with the fixing plate in a guiding mode is formed in the side edge of the sliding seat, and a second guide groove matched with the fixing plate in a guiding mode is formed in the upper surface of the base. The one-way sliding support is applied to the technical field of one-way sliding supports.

Description

Technical Field

[0001] This utility model relates to the technical field of unidirectional sliding bearings, and in particular to a unidirectional sliding bearing for bridge connections. Background Technology

[0002] In recent years, road transport has brought significant challenges to the harmonious development of humanity and nature due to its environmental pollution, energy consumption, transportation costs, and safety concerns. my country's future transportation strategy prioritizes railway development and promotes coordinated development of railways and highways, highlighting the increasing importance and prevalence of high-speed rail transport. With the rapid development of high-speed rail, the application of bridge bearings is indispensable, especially at railway connections between oceans, lakes, and mountainous areas.

[0003] There are three types of bridge sliding bearings: fixed bearings, unidirectional sliding bearings, and multidirectional sliding bearings. Taking unidirectional sliding bearings as an example, structurally they usually include an upper bearing plate, a lower bearing plate, and a velocity locker set between the two bearing plates. The upper and lower bearing plates can slide relative to each other, and this sliding is unidirectional. The sliding method is usually a linear guide structure. Currently, bridge sliding bearings cause the substructure of the bridge to be subjected to greater stress during earthquakes, resulting in severe damage to the substructure during earthquakes. After the earthquake, the substructure may undergo large plastic deformations, making it difficult to achieve self-resetting or functional recovery of the bridge structure after the earthquake. The entire bridge structure is also difficult to repair quickly. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a one-way sliding support for bridge connection with a simple structure that avoids locking failure after plastic deformation.

[0005] The technical solution adopted by this utility model is as follows: This utility model includes a base, a slider that slides with the base, and a fixing plate fixedly connected to the upper end of the slider. The base forms a slide seat, the middle part of the slide seat forms a groove that slides with the slider, the two sides of the groove form sliding grooves that guide the slider, one side of the slide seat forms a baffle that limits the fixing plate, the side edge of the slide seat forms a first guide groove that guides the fixing plate, and the upper surface of the base forms a second guide groove that guides the fixing plate.

[0006] Furthermore, a first clearance groove is formed at the bottom of the slider, and a second clearance groove is formed at the top of the slider. A first slide piece is fixedly connected to the first clearance groove and slides in a sliding engagement with the slide groove. A second slide piece is fixedly connected to the second clearance groove and slides in a sliding engagement with the fixed plate. Protrusions corresponding to the slide grooves are formed at both ends of the first clearance groove, and protrusions guiding the fixed plate are formed at both ends of the second clearance groove.

[0007] Furthermore, both the first and second sliders are PTFE sliding plates.

[0008] Furthermore, the lower surface of the groove is arc-shaped, and the first slider has an arc-shaped surface adapted to the lower surface of the groove.

[0009] Furthermore, the fixing plate includes a surrounding plate, a mounting plate, and two guide blocks. The surrounding plate forms a mounting cavity for the slider to be positioned and engaged. Limiting blocks are provided on both sides of the mounting cavity. Each limiting block has a pressing block on one side that is in close contact with the slider. The mounting plate is fixedly connected to the upper part of the surrounding plate. The upper surface of the mounting plate is connected to the bottom of the bridge body. Each guide block is fixedly connected to the lower surface of the surrounding plate. Each guide block is guided and engaged with the first guide groove and the second guide groove.

[0010] Furthermore, the guide block is formed with a first guide block, a second guide block, and a limiting post. The first guide block is disposed at the lower end of the guide block and is guided and engaged with the first guide groove. The second guide block is disposed at the middle part of the guide block and is guided and engaged with the second guide groove. The limiting post is disposed at one end of the guide block and is pushed and limited by the baffle.

[0011] Furthermore, each of the four corners of the base has a protruding block, and the protruding block is provided with a positioning hole for screw locking.

[0012] Furthermore, the baffle is formed with several reinforcing ribs.

[0013] The beneficial effects of this utility model are as follows: because this utility model adopts the groove in the middle of the slide block and the slider design, the support can achieve unidirectional sliding displacement when bearing the bridge body. The bottom surface of the slider and the bottom of the groove are arc-shaped, which has a certain amount of left and right swing during the pressure process, thereby avoiding plastic deformation during vibration and affecting the unidirectional sliding effect. The first guide groove and the second guide groove structure form a guiding effect with the fixed plate to ensure stability and effectiveness during displacement. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a cross-sectional view of the present invention;

[0016] Figure 3 This is a structural schematic diagram of the base of this utility model;

[0017] Figure 4 This is an exploded view of the slider of this utility model in conjunction with the first and second sliders;

[0018] Figure 5 This is a structural schematic diagram of the fixing plate of this utility model;

[0019] Figure 6 yes Figure 5 A magnified view of part A in the middle.

[0020] In the diagram: 1. Base; 11. Slide; 12. Groove; 13. Slide groove; 14. Baffle; 15. First guide groove; 16. Second guide groove; 2. Slider; 21. First clearance groove; 22. Second clearance groove; 23. Protrusion; 24. Extending block; 3. Fixing plate; 31. Enclosure plate; 32. Mounting plate; 33. Guide block; 331. First guide block; 332. Second guide block; 333. Limiting post; 34. Mounting cavity; 35. Limiting block; 36. Extrusion block; 4. First sliding piece; 5. Second sliding piece. Detailed Implementation

[0021] like Figures 1 to 6 As shown, in this embodiment, the present invention includes a base 1, a slider 2 that slides with the base 1, and a fixing plate 3 fixedly connected to the upper end of the slider 2. The base 1 forms a slide block 11, the middle of the slide block 11 has a groove 12 that slides with the slider 2, the two sides of the groove 12 have guide grooves 13 that guide the slider 2, one side of the slide block 11 has a baffle 14 that limits the fixing plate 3, and the side of the slide block 11 has a guide groove 14 that guides the fixing plate 3. A guide groove 15 is provided, and a second guide groove 16 is formed on the upper surface of the base 1 to guide and cooperate with the fixed plate 3. The groove 12 in the middle of the slide block 11 is used in conjunction with the slider 2 to enable unidirectional sliding displacement when the support supports the bridge body. The bottom surface of the slider 2 and the bottom of the groove 12 are arc-shaped, which has a certain amount of left and right swing during the pressure process, thereby avoiding plastic deformation during vibration and affecting the unidirectional sliding effect. The structure of the first guide groove 15 and the second guide groove 16 forms a guiding effect with the fixed plate 3 to ensure stability and effectiveness during displacement.

[0022] In this embodiment, a first clearance groove 21 is formed at the bottom of the slider 2, and a second clearance groove 22 is formed at the top of the slider 2. A first sliding piece 4 that slides and engages with the slide groove 13 is fixedly connected to the first clearance groove 21. A second sliding piece 5 that slides and engages with the fixed plate 3 is fixedly connected to the second clearance groove 22. Protrusions 23 that engage with the corresponding slide groove 13 are formed at both ends of the first clearance groove 21. Protrusions 24 that guide and engage with the fixed plate 3 are formed at both ends of the second clearance groove 22. The protrusions 23 and the slide groove 13 form a guide structure. When the bridge body expands and contracts due to heat, the fixed plate 3 drives the slider 2 to move back and forth along the slide groove 13.

[0023] In this embodiment, both the first sliding plate 4 and the second sliding plate 5 are PTFE sliding plates. Using PTFE as the contact friction material significantly reduces the friction in the horizontal direction, allowing the support to slide or rotate more freely. This adapts to the horizontal displacement of the structure caused by factors such as temperature changes, concrete shrinkage, and creep. It can resist the corrosion of various chemical substances such as acids, alkalis, and salts, and is suitable for special environments such as marine environments and chemical areas, thus extending the service life of the support.

[0024] In this embodiment, the lower surface of the groove 12 is arc-shaped, and the first slider 4 is formed with an arc-shaped surface that matches the lower surface of the groove 12.

[0025] In this embodiment, the fixing plate 3 includes a surrounding plate 31, a mounting plate 32, and two guide blocks 33. The surrounding plate 31 forms a mounting cavity 34 for limiting the sliding block 2. Limiting blocks 35 are provided on both sides of the mounting cavity 34. Each limiting block 35 has a pressing block 36 that fits tightly against the sliding block 2 on one side. The mounting plate 32 is fixedly connected to the upper part of the surrounding plate 31. The upper surface of the mounting plate 32 is connected to the bottom of the bridge body. Each guide block 33 is fixedly connected to the lower surface of the surrounding plate 31. Each guide block 33 guides and engages with the first guide groove 15 and the second guide groove 16. The pressing block 36 is made of rubber and drives the sliding block 2 to move back and forth through friction. The upper surface of the mounting plate 32 has several connecting holes for fixing the bridge body. A contact plate for contacting the second friction plate is formed in the middle of the mounting cavity 34.

[0026] In this embodiment, the guide block 33 is formed with a first guide block 331, a second guide block 332, and a limiting post 333. The first guide block 331 is disposed at the lower end of the guide block 33 and is guided and engaged with the first guide groove 15. The second guide block 332 is disposed at the middle part of the guide block 33 and is guided and engaged with the second guide groove 16. The limiting post 333 is disposed at one end of the guide block 33 and is pushed and limited by the baffle 14. The width of the first guide groove 15 is greater than the width of the first guide block 331, and the width of the second guide groove 16 is greater than the width of the second guide block 332.

[0027] In this embodiment, each of the four corners of the base 1 has a protruding block 24, and the protruding block 24 is provided with a positioning hole for screw locking.

[0028] In this embodiment, the baffle 14 is provided with a plurality of reinforcing ribs.

[0029] The working principle of this utility model:

[0030] Multiple protruding blocks 24 of the base 1 are fixed to the bridge with screws. The top of the fixing plate 3 is connected and fixed to the bridge body. When the bridge body expands and contracts with heat, the fixing plate 3 drives the slider 2 to move back and forth along the direction of the slide groove 13. The first slide plate slides relative to the bottom surface of the groove 12, transmitting the deformation of the bridge body.

[0031] Although the embodiments of this utility model are described with reference to actual solutions, they do not constitute a limitation on the meaning of this utility model. For those skilled in the art, modifications to the implementation schemes and combinations with other schemes based on this specification are obvious.

Claims

1. A one-way sliding bearing for bridge connections, characterized in that: The utility model provides a slide block (2) is formed with first let -place groove (21) in the bottom, and the top of slide block (2) is formed with second let -place groove (22), first let -place groove (21) fixedly connected with the first sliding sheet (4) of the slide groove (13) sliding cooperation, and second let -place groove (22) fixedly connected with the second sliding sheet (5) of fixed plate (3) sliding cooperation, and the both ends of first let -place groove (21) are formed with the protruding block (23) corresponding with the cooperation of corresponding slide groove (13), and the both ends of second let -place groove (22) are formed with the protruding block (24) of fixed plate (3) guide cooperation.

2. A one-way sliding bearing for bridge connections according to claim 1, characterized in that The utility model provides a slide block (2) is formed with first let -place groove (21) in the bottom, and the top of slide block (2) is formed with second let -place groove (22), first let -place groove (21) fixedly connected with the first sliding sheet (4) of the slide groove (13) sliding cooperation, and second let -place groove (22) fixedly connected with the second sliding sheet (5) of fixed plate (3) sliding cooperation, and the both ends of first let -place groove (21) are formed with the protruding block (23) corresponding with the cooperation of corresponding slide groove (13), and the both ends of second let -place groove (22) are formed with the protruding block (24) of fixed plate (3) guide cooperation.

3. A single direction sliding bearing for a bridge joint according to claim 2, characterized in that: The utility model provides a slide block (2) is formed with first let -place groove (21) in the bottom, and the top of slide block (2) is formed with second let -place groove (22), first let -place groove (21) fixedly connected with the first sliding sheet (4) of the slide groove (13) sliding cooperation, and second let -place groove (22) fixedly connected with the second sliding sheet (5) of fixed plate (3) sliding cooperation, and the both ends of first let -place groove (21) are formed with the protruding block (23) corresponding with the cooperation of corresponding slide groove (13), and the both ends of second let -place groove (22) are formed with the protruding block (24) of fixed plate (3) guide cooperation.

4. A single direction sliding bearing for bridge connections according to claim 2, characterized in that: The utility model provides a slide block (2) is formed with first let -place groove (21) in the bottom, and the top of slide block (2) is formed with second let -place groove (22), first let -place groove (21) fixedly connected with the first sliding sheet (4) of the slide groove (13) sliding cooperation, and second let -place groove (22) fixedly connected with the second sliding sheet (5) of fixed plate (3) sliding cooperation, and the both ends of first let -place groove (21) are formed with the protruding block (23) corresponding with the cooperation of corresponding slide groove (13), and the both ends of second let -place groove (22) are formed with the protruding block (24) of fixed plate (3) guide cooperation.

5. The one-way sliding bearing for bridge joints according to claim 1, characterized in that: The utility model provides a slide block (2) is formed with first let -place groove (21) in the bottom, and the top of slide block (2) is formed with second let -place groove (22), first let -place groove (21) fixedly connected with the first sliding sheet (4) of the slide groove (13) sliding cooperation, and second let -place groove (22) fixedly connected with the second sliding sheet (5) of fixed plate (3) sliding cooperation, and the both ends of first let -place groove (21) are formed with the protruding block (23) corresponding with the cooperation of corresponding slide groove (13), and the both ends of second let -place groove (22) are formed with the protruding block (24) of fixed plate (3) guide cooperation.

6. A single direction sliding bearing for a bridge joint according to claim 5, characterized in that: ​ 7. The one-way sliding bearing for bridge joints according to claim 1, characterized in that: The base (1) is provided with protruding blocks (24) at four corners, and the protruding blocks (24) are provided with positioning holes for locking screws.

8. The one-way sliding bearing for bridge joints according to claim 1, characterized in that: The baffle (14) is provided with reinforcing ribs.

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