Expansion joint for urban underneath pass

Abstract

The utility model belongs to the technical field of expansion joints, and discloses an expansion joint for urban underneath pass, which comprises a first support plate and a second support plate, and the top ends of the first support plate and the second support plate are connected with a plurality of first limit rings. The top ends of the first supporting plate and the second supporting plate are provided with a plurality of butt joint grooves between the first limiting rings, the butt joint grooves are movably connected with a plurality of second limiting rings, and the top ends of the second limiting rings are connected with a first top plate and a second top plate. According to the device, through cooperative use of a first compression spring, a second compression spring, a limiting plate, a first supporting block and a second supporting block, the rolling pressure of a vehicle can be effectively buffered, the expansion joint is effectively protected, through cooperative use of a fixing bolt, a threaded groove and a mounting block, the whole expansion joint can be conveniently fixed, and the practicability is high. And through cooperative use of the magnet piece and the iron block, the expansion joint can be conveniently installed.

Description

Technical Field

[0001] The utility model belongs to the technical field of expansion joints, and more specifically, particularly relates to an expansion joint for urban underpasses. Background Technique

[0002] Due to the thermal expansion and contraction effect of concrete structures, in order to avoid excessive internal stress generated inside the concrete due to temperature changes in the underpass structure, the prior art is to set expansion joints between concrete joints, that is, to disconnect the concrete structure by a certain width at appropriate distances to adapt to the deformation of the concrete structure. The expansion joint is a structural element used to absorb the expansion and contraction of building materials caused by factors such as temperature, humidity, and earthquake.

[0003] The expansion joints currently applied to urban underpasses are often installed at roads or bridges to absorb the expansion and contraction of building materials during temperature changes and prevent the building structure from cracking or being damaged due to stress concentration. However, the expansion joints installed at roads or bridges need to frequently bear the rolling of road vehicles. Frequent rolling of the expansion joints by vehicles will damage the expansion joints. Damage to the joints and the overall structure of the expansion joints will cause them to lose their protective effect on the building structure.

[0004] Therefore, in view of this, research and improvement are carried out on the existing structure and deficiencies, and an expansion joint for urban underpasses is provided in order to achieve a more practical value purpose. Content of the Utility Model

[0005] In order to solve the above technical problems, the utility model provides an expansion joint for urban underpasses, which is achieved by the following specific technical means:

[0006] An expansion joint for urban underpasses includes a first support plate and a second support plate. A plurality of first limiting rings are connected to the tops of the first support plate and the second support plate. A plurality of docking grooves are opened between the plurality of first limiting rings at the tops of the first support plate and the second support plate. A plurality of second limiting rings are movably connected to the plurality of docking grooves. The tops of the plurality of second limiting rings are connected to a first top plate and a second top plate, and the first top plate and the second top plate respectively correspond to the positions of the first support plate and the second support plate. A pair of connecting blocks are fixedly connected to the adjacent layers of the first top plate and the second top plate. A pair of connecting grooves are opened at the tops of the pair of connecting blocks. A pair of first connecting blocks and a pair of second connecting blocks are respectively movably connected to the two pairs of connecting grooves. A support box is arranged between the pair of first connecting blocks and the second connecting blocks. A rubber layer is arranged at the top of the support box.

[0007] Further, the support box includes a first support block, a second support block and a pair of limiting plates. The pair of limiting plates are located at the top of the second support block. A first compression spring is arranged at the top of the limiting plate, and the top of the first compression spring is fixedly connected to the bottom of the first support block. Second compression springs are fixedly connected to the sides of the pair of limiting plates facing the first connecting block and the second connecting block, and the other ends of the second compression springs are fixedly connected to one side of the first connecting block and the second connecting block.

[0008] Further, support platforms are fixedly connected to the bottoms of the adjacent sides of the first connecting block. Support grooves are formed at the tops of the support platforms. A pair of insertion blocks are fixedly connected to the bottom of the second support block, and the insertion blocks are movably connected to the support grooves.

[0009] Further, a plurality of buffer grooves are formed at the bottoms of the first top plate and the second top plate corresponding to a plurality of first limiting rings. A third compression spring is fixedly connected to the top of the first limiting ring, and the top of the third compression spring is connected to the buffer groove.

[0010] Further, magnet sheets are arranged at the tops of a plurality of docking grooves, and iron blocks are arranged at the bottoms of a plurality of second limiting rings.

[0011] Further, mounting blocks are connected to the bottoms of the mutually remote sides of the first support plate and the second support plate.

[0012] Further, a threaded groove is formed at the top of the mounting block, and the threaded groove penetrates through the top and the bottom of the mounting block. A fixing bolt is threadedly connected to the threaded groove.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] In the utility model, through the combined use of the first compression spring, the second compression spring, the limiting plate, the first support block and the second support block, the pressure of vehicle rolling can be effectively buffered, and the expansion joint can be effectively protected. Through the combined use of the fixing bolt, the threaded groove and the mounting block, the whole expansion joint can be conveniently fixed. Through the combined use of the magnet sheet and the iron block, the expansion joint can be conveniently installed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the utility model.

[0016] Figure 2 is a schematic diagram of the overall structure of the upper half of the utility model.

[0017] Figure 3 is a schematic diagram of the overall structure of the lower half of the utility model.

[0018] Figure 4 It is a schematic side sectional view of the present utility model.

[0019] Figure 5 is the present utility model Figure 4 An enlarged schematic view of Structure A.

[0020] In the figure, the corresponding relationship between the component names and the drawing reference numbers is as follows:

[0021] 1. First support plate; 2. Second support plate; 3. First limiting ring; 4. Docking groove; 5. Second limiting ring; 6. First top plate; 7. Second top plate; 8. Connecting block; 9. Connecting groove; 10. First connecting block; 11. Second connecting block; 12. Support box; 13. Rubber layer; 14. First support block; 15. Second support block; 16. Limiting plate; 17. First compression spring; 18. Second compression spring; 19. Support platform; 20. Support groove; 21. Insert block; 22. Buffer groove; 23. Third compression spring; 24. Magnet sheet; 25. Iron block; 26. Installation block; 27. Threaded groove; 28. Fixed bolt. Specific embodiments

[0022] The following further describes the embodiments of the present utility model in detail in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0023] In the description of the present utility model, unless otherwise specified, "a plurality" means two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0025] Embodiment:

[0026] As shown in the attached Figure 1 to the attached Figure 5As shown in the figure:

[0027] The utility model provides an expansion joint for urban underpasses, which includes a first support plate 1 and a second support plate 2. A plurality of first limiting rings 3 are connected to the tops of the first support plate 1 and the second support plate 2. A plurality of docking grooves 4 are opened between the plurality of first limiting rings 3 at the tops of the first support plate 1 and the second support plate 2. A plurality of second limiting rings 5 are movably connected to the plurality of docking grooves 4. The tops of the plurality of second limiting rings 5 are connected to a first top plate 6 and a second top plate 7, and the first top plate 6 and the second top plate 7 correspond to the positions of the first support plate 1 and the second support plate 2 respectively. A pair of connecting blocks 8 are fixedly connected to the adjacent layers of the first top plate 6 and the second top plate 7. A pair of connecting grooves 9 are opened at the tops of the pair of connecting blocks 8. A pair of first connecting blocks 10 and a pair of second connecting blocks 11 are movably connected to the two pairs of connecting grooves 9 respectively. A support box 12 is arranged between the pair of first connecting blocks 10 and the second connecting blocks 11. A rubber layer 13 is arranged at the top of the support box 12.

[0028] Among them, the support box 12 includes a first support block 14, a second support block 15 and a pair of limiting plates 16. The pair of limiting plates 16 are located at the top of the second support block 15. A first compression spring 17 is arranged at the top of the limiting plate 16. The top of the first compression spring 17 is fixedly connected to the bottom of the first support block 14. A second compression spring 18 is fixedly connected to one side of the pair of limiting plates 16 facing the first connecting block 10 and the second connecting block 11, and the other end of the second compression spring 18 is fixedly connected to one side of the first connecting block 10 and the second connecting block 11.

[0029] Among them, support platforms 19 are fixedly connected to the bottoms of the adjacent sides of the first connecting block 10. Support grooves 20 are opened at the tops of the support platforms 19. A pair of insertion blocks 21 are fixedly connected to the bottom of the second support block 15. The insertion blocks 21 are movably connected to the support grooves 20.

[0030] Among them, a plurality of buffer grooves 22 are opened at the bottoms of the first top plate 6 and the second top plate 7 corresponding to the plurality of first limiting rings 3. A third compression spring 23 is fixedly connected to the top of the first limiting ring 3, and the top of the third compression spring 23 is connected to the buffer groove 22.

[0031] Among them, magnet sheets 24 are arranged at the tops of the plurality of docking grooves 4, and iron blocks 25 are arranged at the bottoms of the plurality of second limiting rings 5. The combined use of the magnet sheets 24 and the iron blocks 25 can ensure the stability of the connecting blocks 8.

[0032] Among them, mounting blocks 26 are connected to the bottoms of the mutually remote sides of the first support plate 1 and the second support plate 2.

[0033] Among them, a threaded groove 27 is opened at the top of the mounting block 26, and the threaded groove 27 penetrates through the top and the bottom of the mounting block 26. A fixing bolt 28 is threadedly connected to the threaded groove 27.

[0034] Working principle of this embodiment: When the present utility model is installed, the installer places the first support plate 1 and the second support plate 2 in appropriate positions, installs the fixing bolts 28 along the threaded grooves 27, fixes the installation blocks 26 on the ground, and then aligns the first top plate 6 and the second top plate 7 with the first support plate 1 and the second support plate 2, so that the first limiting ring 3 and the second limiting ring 5 are respectively connected towards the buffer groove 22 and the docking groove 4, and the magnet sheets 24 and the iron blocks 25 are fixed. When the first top plate 6 and the second top plate 7 are both installed on the first support plate 1 and the second support plate 2, connect the first connecting block 10 and the second connecting block 11 through the connecting groove 9, and the insertion block 21 is also connected to the support groove 20, so that the support box 12 can be installed between a pair of connecting blocks 8. At this time, the entire expansion joint is installed. When in use, as the vehicle passes above the expansion joint, the first compression spring 17 and the third compression spring 23 will buffer the vertical pressure, and the second compression spring 18 will buffer the longitudinal pressure, ensuring the service life and protection effect of the expansion joint.

[0035] The embodiments of the present utility model are given for purposes of illustration and description, and are not exhaustive or limit the present utility model to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are chosen and described in order to better illustrate the principles and practical applications of the present utility model, and to enable those of ordinary skill in the art to understand the present utility model and thus design various embodiments with various modifications suitable for specific purposes.

Claims

1. An expansion joint for urban underpass, comprising a first support plate (1) and a second support plate (2), characterized in that: The top ends of the first support plate (1) and the second support plate (2) are both connected to a plurality of first limiting rings (3); the top ends of the first support plate (1) and the second support plate (2) are both provided with a plurality of docking grooves (4) between the plurality of first limiting rings (3); the plurality of docking grooves (4) are both movably connected to a plurality of second limiting rings (5); the top ends of the plurality of second limiting rings (5) are connected to a first top plate (6) and a second top plate (7); and the first top plate (6) and the second top plate (7) are respectively connected to the first support plate ( 1) and a second support plate (2) are located in corresponding positions, the adjacent layers of the first top plate (6) and the second top plate (7) are fixedly connected with a pair of connection blocks (8), the top ends of the pair of connection blocks (8) are each provided with a pair of connection grooves (9), the two pairs of connection grooves (9) are respectively movably connected with a pair of first connection blocks (10) and a pair of second connection blocks (11), a support box (12) is arranged between the pair of first connection blocks (10) and the second connection blocks (11), and a rubber layer (13) is arranged at the top end of the support box (12).

2. An expansion joint for urban underpass as claimed in claim 1, characterized in that: The support box (12) comprises a first support block (14), a second support block (15) and a pair of limit plates (16), wherein the pair of limit plates (16) are located at the top end of the second support block (15), a first compression spring (17) is arranged at the top end of the limit plate (16), the top end of the first compression spring (17) is fixedly connected to the bottom end of the first support block (14), and a second compression spring (18) is fixedly connected to one side of the pair of limit plates (16) facing the first connecting block (10) and the second connecting block (11), and the other end of the second compression spring (18) is fixedly connected to one side of the first connecting block (10) and the second connecting block (11).

3. An expansion joint for urban underpass as claimed in claim 2, characterized in that: The bottom ends of adjacent sides of the first connecting block (10) are fixedly connected to support platforms (19), the top of the support platform (19) is provided with a support groove (20), and the bottom end of the second supporting block (15) is fixedly connected to a pair of plug blocks (21), and the plug blocks (21) and the support grooves (20) are movably connected.

4. An expansion joint for urban underpass as claimed in claim 1, characterized in that: A plurality of buffer grooves (22) are provided at the bottom ends of the first top plate (6) and the second top plate (7) corresponding to the plurality of first limiting rings (3); a third compression spring (23) is fixedly connected to the top end of the first limiting ring (3), and the top end of the third compression spring (23) is connected to the buffer groove (22).

5. An expansion joint for urban underpass as claimed in claim 1, characterized in that: The top ends of the plurality of docking grooves (4) are each provided with a magnet sheet (24), and the bottom ends of the plurality of the second limiting rings (5) are each provided with an iron block (25).

6. An expansion joint for urban underpass as claimed in claim 1, characterized in that: The bottom ends of the first support plate (1) and the second support plate (2) on a side away from each other are both connected to a mounting block (26).

7. An expansion joint for urban underpass as claimed in claim 6, characterized in that: A thread groove (27) is provided at the top end of the mounting block (26), and the thread groove (27) passes through the top end and the bottom end of the mounting block (26), and a fixing bolt (28) is threadedly connected to the thread groove (27).

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