Waterproof expansion joint

Abstract

The utility model relates to a waterproof expansion joint which comprises two connecting parts and an elastic rubber strip part, the two connecting parts are symmetrically arranged on the two opposite sides of the elastic rubber strip part, the two ends of the elastic rubber strip part are inserted into the two connecting parts respectively, and each connecting part comprises F-shaped steel and a positioning matching piece. The positioning matching piece is welded and fixed to a bottom cross beam of the F-shaped steel and used for being connected with the end of the elastic rubber strip part in a matched mode, and the elastic rubber strip part comprises two bearing sections, a plurality of inserting strips and a deformation section. In the installation and use process of the expansion joint, the flow speed can be reduced due to friction along the way and local friction resistance when water flows in the flow channel by utilizing the curve of a path between the positioning matching piece and the elastic rubber strip part and the change of a gap, so that the leakage amount is reduced, and the water shrinks due to the influence of inertia when passing through the seam, so that the water leakage is reduced. The section of the flow beam is reduced, the leakage amount is further reduced, and therefore the sealing waterproof performance of the expansion joint is improved.

Description

Technical Field

[0001] This utility model relates to the field of expansion joint technology, specifically a waterproof expansion joint. Background Technology

[0002] Expansion joints are structural joints installed between the ends of two beams, between the beam end and the abutment, or at the hinged joints of a bridge to accommodate the deformation of bridge decks and other facilities.

[0003] For example, a utility model patent with Chinese patent publication number CN220413994U proposes a waterproof expansion joint. This joint improves upon the shape and structure of the F-shaped steel and elastic rubber strip, increasing sealing points and enhancing waterproofing performance. This prevents water corrosion of the F-shaped steel and extends its service life. However, this type of waterproof expansion joint still has the following drawbacks: water can easily seep in at the joints between the F-shaped steel and the elastic rubber strip, causing certain problems during its use. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] This invention provides a waterproof expansion joint, which solves the problem of water seepage at the edges of the F-shaped steel and elastic rubber strip in existing expansion joints.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a waterproof expansion joint, comprising two connecting parts and an elastic rubber strip part. The two connecting parts are symmetrically arranged on opposite sides of the elastic rubber strip part, and the two ends of the elastic rubber strip part are respectively inserted into the two connecting parts. The connecting parts include F-shaped steel and positioning fittings. The positioning fittings are welded and fixed to the bottom crossbeam of the F-shaped steel, and the positioning fittings are used to connect the ends of the elastic rubber strip part. The elastic rubber strip part includes two supporting sections, multiple inserts, and a deformation section. The deformation section is configured as a "U" shape. The two supporting sections are respectively formed at the two ends of the top of the deformation section. The multiple inserts are evenly formed at the bottom of the two supporting sections, and the multiple inserts are used to connect and seal with the positioning fittings.

[0008] Preferably, the positioning and mating component includes a base plate and a plurality of protrusions, the plurality of protrusions being uniformly formed on the top of the base plate, and the gap between every two adjacent protrusions forming a slot, the slot engaging with the adjacent protrusion.

[0009] In a further preferred embodiment, the elastic strip portion further includes two sidewall sections, which are respectively formed on opposite sides of the two supporting sections, and the sidewall sections are in close contact with the inner sidewall of the adjacent F-shaped steel, and a guide arc surface is formed at the connection between the sidewall sections and the supporting sections.

[0010] In a further preferred embodiment, the waterproof expansion joint also includes several pressure blocks, with at least one pressure block provided at the top of each supporting section, and the pressure block is inserted into the gap between the supporting section and the top crossbeam of the F-shaped steel. A countersunk hole is formed on the top crossbeam of the F-shaped steel, and a bolt threadedly connected to the adjacent pressure block is inserted into the countersunk hole.

[0011] (III) Beneficial Effects

[0012] Compared with the prior art, this utility model provides a waterproof expansion joint, which has the following beneficial effects:

[0013] In this invention, the positioning fitting and the elastic rubber strip are designed to work together so that during installation and use, the expansion joint can utilize the tortuous path and the change in gap between the positioning fitting and the elastic rubber strip. When water flows in the channel, the flow rate is slowed down due to friction along the path and local resistance, thereby reducing leakage. Moreover, when water passes through the joint opening, it will contract due to inertia, reducing the cross-section of the flow stream and further reducing leakage, thus improving the sealing and waterproof performance of the expansion joint. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the cross-sectional structure of the waterproof expansion joint according to the implementation plan;

[0015] Figure 2 for Figure 1 A front view of the cross-section of a waterproof expansion joint;

[0016] Figure 3 This is a structural schematic diagram of the connection part according to the implementation plan;

[0017] Figure 4 This is a structural schematic diagram of the elastic rubber strip according to the implementation plan.

[0018] In the diagram: 10. Connecting part; 11. F-shaped steel; 111. Countersunk hole; 12. Positioning mating part; 121. Base plate; 122. Raised strip; 123. Slot; 20. Elastic rubber strip part; 21. Side wall section; 22. Support section; 23. Insert strip; 24. Deformation section; 25. Guide arc surface; 30. Pressure block part; 40. Bolt. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1 and Figure 2 A waterproof expansion joint may include two connecting parts 10, an elastic rubber strip part 20, a plurality of pressure block parts 30, and bolts 40. The two connecting parts 10 are symmetrically arranged on opposite sides of the elastic rubber strip part 20, and both ends of the elastic rubber strip part 20 are respectively inserted into the two connecting parts 10. The pressure block parts 30 are inserted into the gap between the elastic rubber strip part 20 and the top crossbeam of the F-shaped steel 11, and the bolts 40 are used to fix the pressure block parts 30.

[0021] See Figure 3 The connecting part 10 includes an F-shaped steel 11 and a positioning fitting 12. The positioning fitting 12 is welded and fixed to the bottom crossbeam of the F-shaped steel 11, and a countersunk hole 111 is formed on the top crossbeam of the F-shaped steel 11. The positioning fitting 12 is used to connect with the end of the elastic rubber strip part 20; a bolt 40 that is threaded to the adjacent pressure block part 30 is inserted into the countersunk hole 111.

[0022] In this embodiment, the positioning mating component 12 includes a base plate 121 and a plurality of protrusions 122. The plurality of protrusions 122 are uniformly formed on the top of the base plate 121, and a slot 123 is formed in the gap between every two adjacent protrusions 122.

[0023] See Figure 4The elastic strip portion 20 includes two sidewall sections 21, two support sections 22, multiple inserts 23, and a deformation section 24. The deformation section 24 is U-shaped, with the two support sections 22 formed at both ends of the top of the deformation section 24, the two sidewall sections 21 formed on opposite sides of the two support sections 22, and multiple inserts 23 evenly formed at the bottom of the two support sections 22. The multiple inserts 23 are used to connect and seal with the positioning fitting 12. When the elastic strip portion 20 is installed, the slot 123 can be interlocked with the adjacent inserts 23, thereby forming a labyrinthine flow channel between the slot 123 and the inserts 23. By utilizing the tortuous path and varying gaps between the positioning fitting 12 and the elastic rubber strip 20, the water flow in the channel is slowed down due to friction along the flow path and localized resistance, thereby reducing leakage. Furthermore, as the water passes through the joint, it contracts due to inertia, reducing the cross-section of the flow stream and further decreasing leakage, thus improving the sealing and waterproofing performance of the expansion joint. The sidewall section 21 is in close contact with the inner wall of the adjacent F-shaped steel 11, and a guiding arc surface 25 is formed at the connection between the sidewall section 21 and the supporting section 22. When external water flows to the guiding arc surface 25, its arc surface influence allows some water to be guided towards the deformation section 24, thereby reducing water accumulation at the connection between the connecting part 10 and the elastic rubber strip 20.

[0024] In this embodiment, each supporting section 22 is provided with at least one pressing block 30 at its top, and the pressing block 30 is inserted into the gap between the supporting section 22 and the top crossbeam of the F-shaped steel 11. After the pressing block 30 is fixed in place by bolts 40, the pressing block 30 can press the elastic rubber strip 20 downward.

[0025] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A waterproof expansion joint comprising two connecting portions (10) and an elastic rubber strip portion (20), the two connecting portions (10) being symmetrically arranged on opposite sides of the elastic rubber strip portion (20), and the two ends of the elastic rubber strip portion (20) being respectively inserted into the two connecting portions (10), characterized in that, The connecting part (10) comprises an F-shaped steel (11) and a positioning fitting (12) welded and fixed on the bottom beam of the F-shaped steel (11), and the positioning fitting (12) is used for connecting and sealing the end of an elastic rubber strip part (20) comprising two supporting sections (22), a plurality of insertion strips (23) and a deformation section (24) arranged in a "U" shape, the two supporting sections (22) are respectively formed at both ends of the top of the deformation section (24), and the plurality of insertion strips (23) are uniformly formed at the bottom of the two supporting sections (22) and are used for connecting and sealing the positioning fitting (12).

2. A waterstop expansion joint according to claim 1, characterized in that: The positioning fitting (12) comprises a bottom plate (121) and a plurality of convex strips (122) uniformly formed at the top of the bottom plate (121), and the gap between every two adjacent convex strips (122) forms a slot (123) which is buckled with the adjacent insertion strip (23).

3. A waterstop expansion joint according to claim 1 or 2, characterized in that: The elastic rubber strip part (20) further comprises two side wall sections (21) respectively formed on the opposite sides of the two supporting sections (22), and the side wall sections (21) are in contact with the inner side walls of the adjacent F-shaped steel (11).

4. A waterstop expansion joint according to claim 3, wherein: The connecting part between the side wall section (21) and the supporting section (22) forms a flow guide camber (25).

5. The waterproof expansion joint according to claim 1, wherein: Further comprising a plurality of pressing block parts (30), and at least one pressing block part (30) is arranged on the top of each supporting section (22), and the pressing block part (30) is inserted into the gap between the supporting section (22) and the top beam of the F-shaped steel (11).

6. A waterproof expansion joint according to claim 5, wherein: The top beam of the F-shaped steel (11) forms a countersunk hole (111), and a bolt (40) is inserted into the countersunk hole (111) and is screwed with the adjacent pressing block part (30).

Images