Large bridge comb plate expansion joint water stop bolt

Abstract

The utility model discloses a large bridge comb plate expansion joint waterstop bolt, which relates to the field of bridge waterstop bolts and comprises a bolt and a nut, the bolt sequentially penetrates through a fixed toothed plate, a stainless steel sliding plate and a fixed plate from top to bottom, and the bottom of the bolt is locked by the nut. A steel sleeve assembly and a sealing assembly are arranged between the nut and the fixing plate, the steel sleeve assembly is located above the sealing assembly, the sealing assembly exerts elastic force to fix the steel sleeve assembly to the lower portion of the fixing plate, a blocking piece is arranged at the top of the bolt and fixedly arranged in the fixing toothed plate, and the steel sleeve assembly and the sealing assembly are arranged on the fixing toothed plate. A common bolt is redesigned and additionally provided with a structure, sealing waterproof glue is replaced by the rubber part made of expansion rubber materials, and the elastic part is installed in the sealing assembly so that the rubber part can be filled with the assembly steel sleeve after being expanded when meeting water to achieve the effect of filling gaps to stop water, and the double-layer nut is additionally arranged to prevent looseness. And the sealing assembly, the steel sleeve and the steel box girder bottom plate are tightly attached.

Description

Technical Field

[0001] The utility model relates to the field of bridge water stop bolts, in particular to a large bridge comb plate expansion joint water stop bolt. Background Art

[0002] Some large bridge expansion joints are unitized multi-directional displacement comb-type plates, with a saddle-type spanning method. Fixed tooth plates are located at the main bridge steel box girders. On rainy days, water will accumulate in the tooth plate grooves for a short time, and rainwater will penetrate into the bolts from the gap between the tooth plate and the sliding steel plate. Due to the incomplete filling of the sealing material of the fixed bolt eyes during construction and installation and the influence of long-term driving vibration, rainwater will penetrate into the steel box girder from the bolt holes, resulting in long-term water accumulation in the end compartment. If the humidity of the steel box girder exceeds the standard and is not resolved in time, it will cause early rusting of the steel structure, affect the durability of the bridge, and also increase the energy consumption of the dehumidifier. Utility Model Content

[0003] The utility model aims to provide a large bridge comb plate expansion joint water stop bolt to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a large bridge comb plate expansion joint waterstop bolt, including a bolt and a nut, wherein the bolt passes through a fixed tooth plate, a stainless steel slide plate and a fixed plate from top to bottom in sequence, and the bottom of the bolt is locked by a nut, and a steel sleeve assembly and a sealing assembly are provided between the nut and the fixed plate, wherein the steel sleeve assembly is located above the sealing assembly, and the sealing assembly applies elastic force to fix the steel sleeve assembly below the fixed plate, and a blocking member is provided on the top of the bolt, and the blocking member is fixedly arranged in the fixed tooth plate.

[0005] Preferably, the fixed tooth plate is provided with a stepped hole, and the blocking member is installed in the stepped hole.

[0006] Preferably, the steel sleeve assembly comprises a steel sleeve and a rubber component, wherein the rubber component is installed in the steel sleeve and the rubber component is wrapped around the bolt.

[0007] Preferably, the sealing assembly includes an elastic member and a gasket, the elastic member is installed on the outside of the gasket, and the upper end of the elastic member is pressed against the bottom of the steel sleeve assembly.

[0008] Preferably, a support ring is provided at the bottom of the gasket, and the bottom of the elastic member is mounted on the support ring.

[0009] Preferably, the blocking member includes a water-isolating pad and a supporting pad, the water-isolating pad is located above the supporting pad, and the supporting pad is installed in the stepped hole.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The utility model redesigns and adds structure to ordinary bolts, adopts rubber parts made of expanding rubber materials to replace sealing waterproof glue, and installs elastic parts in the sealing components so that the rubber parts can fill the component steel sleeve after swelling in water to achieve the effect of filling the gap and stopping water, and then adds double-layer nuts to prevent loosening, so as to ensure that the sealing components, the steel sleeve and the bottom plate of the steel box beam are in close contact. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the cross-sectional structure of the utility model;

[0013] Figure 2 for Figure 1 A magnified view of the structure at D inside;

[0014] Figure 3 for Figure 1 Enlarged view of the structure at inner E.

[0015] In the figure: 1-bolt;

[0016] 2- nut;

[0017] 3-fixed tooth plate; 31-step hole;

[0018] 4-Stainless steel slide plate;

[0019] 5-Fixed plate;

[0020] 6-steel sleeve assembly; 61-steel sleeve; 62-rubber part;

[0021] 7-sealing assembly; 71-elastic member; 72-gasket;

[0022] 8-blocking member; 81-waterproof pad; 82-support pad. DETAILED DESCRIPTION

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

[0024] See also Figures 1 to 3The utility model provides a technical solution: a large bridge comb plate expansion joint waterstop bolt, comprising a bolt 1 and a nut 2. The bolt 1 passes through a fixed tooth plate 3, a stainless steel slide plate 4 and a fixed plate 5 from top to bottom in sequence. The bottom of the bolt 1 is locked by the nut 2. A steel sleeve assembly 6 and a sealing assembly 7 are provided between the nut 2 and the fixed plate 5. The steel sleeve assembly 6 is located above the sealing assembly 7. The sealing assembly 7 applies elastic force to fix the steel sleeve assembly 6 below the fixed plate 5. A blocking member 8 is provided on the top of the bolt 1. The blocking member 8 is fixedly arranged in the fixed tooth plate 3. The gap is filled and waterstopping is achieved through the cooperation of the steel sleeve assembly 6 and the sealing assembly 7.

[0025] In this embodiment, a stepped hole 31 is provided on the fixed tooth plate 3 , and the blocking member 8 is installed in the stepped hole 31 . The diameter of the stepped hole 31 is larger than the countersunk hole of the bolt 1 , so that the bolt 1 is easily installed.

[0026] In this embodiment, the steel sleeve assembly 6 includes a steel sleeve 61 and a rubber member 62. The rubber member 62 is installed in the steel sleeve 61. The rubber member 62 is wrapped around the bolt 1. The steel sleeve 61 restricts the rubber member 62 from the outside, so that the rubber member 62 that expands by absorbing water can fill the hole of the bolt 1 upward.

[0027] In this embodiment, the sealing assembly 7 includes an elastic member 71 and a gasket 72. The elastic member 71 is installed on the outside of the gasket 72. The upper end of the elastic member 71 is pressed against the bottom of the steel sleeve assembly 6. The elastic member 71 can apply pressure and elastic force to the steel sleeve assembly 6, and can provide sufficient pressure to fill the rubber member 62 into the gap to prevent water seepage.

[0028] In this embodiment, a support ring is provided at the bottom of the gasket 72, and the bottom of the elastic member 71 is installed on the support ring, and the support ring is convenient for installing the elastic member.

[0029] In this embodiment, the blocking member 8 includes a water-isolating pad 81 and a supporting pad 82. The water-isolating pad 81 is located above the supporting pad 82, and the supporting pad 82 is installed in the stepped hole 31. The water-isolating pad 81 and the supporting pad 82 can prevent water from seeping through the hole into the bottom of the bolt 1, thereby reducing water seepage. A pulling hole is provided on the supporting pad 82, so as to facilitate inserting a tool from the top to remove the blocking member 8 when the blocking member 8 is damaged.

[0030] Working principle: A rubber part 62 made of expanding rubber material is used to replace the sealing waterproof glue, and an elastic part 71 is installed in the sealing component 7 so that the rubber part 62 can expand when exposed to water and fill the component steel sleeve 61 to achieve the effect of filling the gap and stopping water, and then a double-layer nut 2 is added to prevent loosening to ensure that the sealing component 7, the steel sleeve 61 and the bottom plate of the steel box beam are in close contact.

[0031] It is known from common technical knowledge that the present invention can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the embodiments disclosed above are only illustrative in all respects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. A large bridge comb plate expansion joint water stop bolt, characterized by: The invention comprises a bolt (1) and a nut (2). The bolt (1) passes through a fixed tooth plate (3), a stainless steel slide plate (4) and a fixed plate (5) in sequence from top to bottom. The bottom of the bolt (1) is locked by the nut (2). A steel sleeve assembly (6) and a sealing assembly (7) are provided between the nut (2) and the fixed plate (5). The steel sleeve assembly (6) is located above the sealing assembly (7). The sealing assembly (7) applies elastic force to fix the steel sleeve assembly (6) below the fixed plate (5). A blocking member (8) is provided at the top of the bolt (1). The blocking member (8) is fixedly arranged in the fixed tooth plate (3).

2. A large bridge comb plate expansion joint water stop bolt according to claim 1, characterized in that: The fixed tooth plate (3) is provided with a stepped hole (31), and the blocking member (8) is installed in the stepped hole (31).

3. A large bridge comb plate expansion joint water stop bolt according to claim 1, characterized in that: The steel sleeve assembly (6) comprises a steel sleeve (61) and a rubber component (62). The rubber component (62) is installed in the steel sleeve (61), and the rubber component (62) is wrapped around the bolt (1).

4. A large bridge comb plate expansion joint water stop bolt according to claim 1, characterized in that: The sealing assembly (7) comprises an elastic member (71) and a gasket (72), wherein the elastic member (71) is mounted on the outside of the gasket (72), and the upper end of the elastic member (71) is pressed against the bottom of the steel sleeve assembly (6).

5. A large bridge comb plate expansion joint water stop bolt according to claim 4, characterized in that: A support ring is provided at the bottom of the gasket (72), and the bottom of the elastic member (71) is mounted on the support ring.

6. A large bridge comb plate expansion joint water stop bolt according to claim 2, characterized in that: The blocking member (8) comprises a water-isolating pad (81) and a supporting pad (82), wherein the water-isolating pad (81) is located above the supporting pad (82), and the supporting pad (82) is installed in the stepped hole (31).

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