Comb plate expansion joint with stainless steel layer laser-cladded on surface

Abstract

The utility model relates to a comb plate expansion joint with a laser cladding stainless steel layer on the surface, which belongs to the technical field of bridge expansion joint processing and comprises a concrete layer, a bridge floor layer is arranged on the side edge of the upper end face of the concrete layer, and an embedded anchoring steel bar structure is laid on the upper end face of the concrete layer. A concrete pouring layer is arranged at the upper end of the concrete layer through concrete pouring, a reinforcing plate structure is installed on the upper end face of the concrete pouring layer, through the design of the reinforcing plate structure, the structural strength of the concrete pouring layer can be improved, and the problem that the concrete pouring layer is fractured after being pressed is solved; by arranging the rubber water stop belt structure, the waterproof performance of the expansion joint can be improved, corresponding cladding materials are added to the surfaces of the small comb plates and the surfaces of the large comb plates in a laser cladding machining mode, the abrasion resistance and the corrosion resistance of the comb plates can be improved, and therefore driving safety is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge expansion joints, and in particular relates to a comb-tooth plate expansion joint with a stainless steel layer laser-claded on the surface. Background Art

[0002] The comb plate expansion joint is a bridge expansion joint primarily composed of comb plates, anchor bolts, and a waterproof structure. The comb plate expansion joint structure features two interlaced comb plates forming a seamless continuum. Its modular design allows for easy installation, allowing replacement of damaged sections without closing traffic.

[0003] The overall structural strength and waterproof performance of the existing comb plate expansion joints after installation are relatively poor. At the same time, the existing comb plate expansion joints are all made of low-carbon steel and painted on the surface. After continuous passage of vehicles, the paint on the surface will be worn away, thereby affecting driving safety. Utility Model Content

[0004] In order to solve the technical problems existing in the above-mentioned background technology, the utility model provides a comb plate expansion joint with a stainless steel layer laser-claded on the surface.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A comb-tooth plate expansion joint with a stainless steel layer laser-clad on the surface comprises a concrete layer, a bridge deck layer is provided on the side of the upper end face of the concrete layer, a pre-buried anchor steel bar structure is paved on the upper end face of the concrete layer, a concrete pouring layer is provided on the upper end of the concrete layer by pouring concrete, a reinforcement plate structure is installed on the upper end face of the concrete pouring layer, a waterstop structure is provided on the upper end face of the reinforcement plate structure, a small comb-tooth plate is installed on the upper end face of the waterstop structure, a large comb-tooth plate is provided on the side of the small comb-tooth plate, and the small comb-tooth plate and the large comb-tooth plate are fixedly connected to the concrete pouring layer by connecting bolts.

[0007] Furthermore, the embedded anchor steel bar structure includes U-shaped reinforcing steel bars, threaded sleeves, fixing screw holes and connecting steel bars. The upper end surface of the concrete layer is paved with U-shaped reinforcing steel bars. The upper end of the U-shaped reinforcing steel bars is provided with a threaded sleeve. The upper end of the threaded sleeve is provided with a fixing screw hole. Connecting steel bars are provided between the two groups of U-shaped reinforcing steel bars.

[0008] Furthermore, a second tiny protrusion structure is provided on the upper side of the small comb plate, and a first tiny protrusion structure is provided on the upper side of the large comb plate. The small comb plate and the large comb plate are both provided with mounting screw holes corresponding to the connecting bolts.

[0009] Furthermore, the surfaces of the small comb-tooth plates and the large comb-tooth plates are processed by laser cladding to add corresponding cladding materials on the surface of the substrate.

[0010] Furthermore, the reinforcement plate structure includes a fastening bolt, a reinforcement plate and two threaded through holes. The upper end surface of the concrete casting layer is provided with a reinforcement plate. The side of the reinforcement plate is fixedly connected to the concrete casting layer by a fastening bolt. A threaded through hole two corresponding to the connecting bolt is opened inside the upper end of the reinforcement plate.

[0011] Furthermore, the waterstop structure includes a rubber waterstop body, an elastic structure and a threaded through hole. The upper end surface of the reinforcement plate structure is provided with a rubber waterstop body, the center position of the rubber waterstop body is provided with an elastic structure, and a threaded through hole corresponding to the connecting bolt is opened inside the upper end of the rubber waterstop body.

[0012] Beneficial effects of the utility model:

[0013] The utility model can improve the structural strength of the concrete casting layer through the design of the reinforcement plate structure, and avoid the problem of fracture of the concrete casting layer after being compressed. By setting up a water stop structure, the waterproof performance of the expansion joint can be improved. By adding corresponding cladding materials to the surface of the base material through laser cladding processing on the surface of the small comb plate and the large comb plate, the wear resistance and corrosion resistance of the comb plate can be increased, thereby ensuring driving safety. By setting a tiny protrusion structure on the upper end face of the comb plate, the durability and safety of the structure can be further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 This is a structural schematic diagram of a comb plate expansion joint with a stainless steel layer laser-clad on the surface of the utility model;

[0016] Figure 2 This is a schematic structural diagram of the pre-buried anchor steel bar structure of the utility model;

[0017] Figure 3 This is a three-dimensional diagram of the pre-buried anchor steel bar structure of the utility model;

[0018] Figure 4 A three-dimensional diagram of the position of the comb plate of the utility model;

[0019] Figure 5 This is a three-dimensional diagram of the waterstop structure of the utility model;

[0020] Figure 6 It is a three-dimensional diagram of the reinforcement plate structure of the present invention.

[0021] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0022] 1. Concrete layer; 2. Reinforcement plate structure; 21. Fastening bolts; 22. Reinforcement plate; 23. Threaded through hole 2; 3. Waterstop structure; 31. Rubber waterstop body; 32. Elastic structure; 33. Threaded through hole 1; 4. Concrete pouring layer; 5. Bridge deck layer; 6. Small comb plate; 7. Large comb plate; 8. Embedded anchor steel bar structure; 81. U-shaped reinforcement steel bar; 82. Threaded sleeve; 83. Fixing screw hole; 84. Connecting steel bar; 9. Connecting bolt; 10. Micro-protrusion structure 1; 11. Micro-protrusion structure 2; 12. Installation screw hole. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figures 1-6 As shown, a comb-tooth plate expansion joint with a stainless steel layer laser-clad on the surface comprises a concrete layer 1, a bridge deck layer 5 is arranged on the side of the upper end face of the concrete layer 1, a pre-buried anchor steel bar structure 8 is paved on the upper end face of the concrete layer 1, a concrete pouring layer 4 is arranged on the upper end face of the concrete layer 1 by pouring concrete, a reinforcement plate structure 2 is installed on the upper end face of the concrete pouring layer 4, a waterstop structure 3 is arranged on the upper end face of the reinforcement plate structure 2, a small comb-tooth plate 6 is installed on the upper end face of the waterstop structure 3, a large comb-tooth plate 7 is arranged on the side of the small comb-tooth plate 6, and the small comb-tooth plate 6 and the large comb-tooth plate 7 are fixedly connected to the concrete pouring layer 4 by connecting bolts 9.

[0025] The embedded anchor steel bar structure 8 includes a U-shaped reinforcing steel bar 81, a threaded sleeve 82, a fixing screw hole 83 and a connecting steel bar 84. The upper end surface of the concrete layer 1 is paved with a U-shaped reinforcing steel bar 81, and a threaded sleeve 82 is provided at the upper end of the U-shaped reinforcing steel bar 81. A fixing screw hole 83 is opened at the upper end of the threaded sleeve 82, and a connecting steel bar 84 is connected between the two groups of U-shaped reinforcing steel bars 81.

[0026] The upper side of the small comb plate 6 is provided with a tiny protruding structure 2 11, and the upper side of the large comb plate 7 is provided with a tiny protruding structure 10. The inside of the small comb plate 6 and the large comb plate 7 are both provided with mounting screw holes 12 corresponding to the connecting bolts 9.

[0027] The surfaces of the small comb-tooth plates 6 and the large comb-tooth plates 7 are both processed by laser cladding to add corresponding cladding materials on the surface of the base material.

[0028] The reinforcement plate structure 2 includes a fastening bolt 21, a reinforcement plate 22 and a threaded through hole 23. The upper end surface of the concrete pouring layer 4 is provided with a reinforcement plate 22. The side of the reinforcement plate 22 is fixedly connected to the concrete pouring layer 4 by a fastening bolt 21. A threaded through hole 23 corresponding to the connecting bolt 9 is opened inside the upper end of the reinforcement plate 22.

[0029] The waterstop structure 3 includes a rubber waterstop body 31, an elastic structure 32 and a threaded through hole 33. The upper end surface of the reinforcement plate structure 2 is provided with a rubber waterstop body 31, and the elastic structure 32 is provided at the center position of the rubber waterstop body 31. A threaded through hole 33 corresponding to the connecting bolt 9 is opened inside the upper end of the rubber waterstop body 31.

[0030] Working principle:

[0031] The utility model can improve the structural strength of the concrete pouring layer 4 through the design of the reinforcement plate structure 2, and avoid the problem of the concrete pouring layer 4 being broken after being compressed. By setting up the water stop strip structure 3, the waterproof performance of the expansion joint can be improved. By adding corresponding cladding materials to the surface of the base material through laser cladding processing on the surface of the small comb plate 6 and the large comb plate 7, the wear resistance and corrosion resistance of the comb plate can be increased, thereby ensuring driving safety. By setting a tiny protrusion structure on the upper end surface of the comb plate, the durability and safety of the structure can be further improved.

[0032] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0033] The above describes an embodiment of the present invention in detail. However, the above content is only a preferred embodiment of the present invention and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent application of the present invention.

Claims

1. A comb plate expansion joint with a surface laser cladding stainless steel layer, characterized in that: The invention comprises a concrete layer (1), a bridge deck layer (5) is provided on the side of the upper end surface of the concrete layer (1), a pre-buried anchor steel bar structure (8) is laid on the upper end surface of the concrete layer (1), a concrete pouring layer (4) is provided on the upper end of the concrete layer (1) by pouring concrete, a reinforcement plate structure (2) is installed on the upper end surface of the concrete pouring layer (4), a water stop structure (3) is provided on the upper end surface of the reinforcement plate structure (2), a small comb plate (6) is installed on the upper end surface of the water stop structure (3), a large comb plate (7) is provided on the side of the small comb plate (6), and the small comb plate (6) and the large comb plate (7) are fixedly connected to the concrete pouring layer (4) by connecting bolts (9).

2. The comb plate expansion joint with a surface laser cladding stainless steel layer according to claim 1, characterized in that: The embedded anchoring steel bar structure (8) comprises a U-shaped reinforcing steel bar (81), a threaded sleeve (82), a fixing screw hole (83) and a connecting steel bar (84); the upper end surface of the concrete layer (1) is paved with the U-shaped reinforcing steel bar (81); the upper end of the U-shaped reinforcing steel bar (81) is provided with a threaded sleeve (82); the upper end of the threaded sleeve (82) is provided with a fixing screw hole (83); and a connecting steel bar (84) is provided between two groups of the U-shaped reinforcing steel bars (81).

3. The comb plate expansion joint with a surface laser cladding stainless steel layer according to claim 1, characterized in that: The upper side of the small comb plate (6) is provided with a second micro-protrusion structure (11), and the upper side of the large comb plate (7) is provided with a first micro-protrusion structure (10). The small comb plate (6) and the large comb plate (7) are both provided with mounting screw holes (12) corresponding to the connecting bolts (9) inside.

4. The comb plate expansion joint with a surface laser cladding stainless steel layer according to claim 1, characterized in that: The surfaces of the small comb tooth plate (6) and the large comb tooth plate (7) are both processed by laser cladding to add corresponding cladding materials on the surface of the base material.

5. The comb plate expansion joint with a surface laser cladding stainless steel layer according to claim 1, characterized in that: The reinforcing plate structure (2) includes a fastening bolt (21), a reinforcing plate (22) and two threaded through holes (23); the upper end surface of the concrete pouring layer (4) is provided with a reinforcing plate (22); the side of the reinforcing plate (22) is fixedly connected to the concrete pouring layer (4) by the fastening bolt (21); and the upper end of the reinforcing plate (22) is provided with two threaded through holes (23) corresponding to the connecting bolts (9).

6. The comb plate expansion joint with a stainless steel layer laser cladding according to claim 1, characterized in that: The waterstop structure (3) includes a rubber waterstop body (31), an elastic structure (32) and a threaded through hole (33). The upper end surface of the reinforcement plate structure (2) is provided with a rubber waterstop body (31), the center position of the rubber waterstop body (31) is provided with an elastic structure (32), and the upper end of the rubber waterstop body (31) is provided with a threaded through hole (33) corresponding to the connecting bolt (9).

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