Dustproof drainage expansion joint device

Abstract

The utility model relates to the technical field of road and bridge engineering, in particular to a dustproof drainage expansion joint device which comprises a pair of steel plates arranged in a clearance symmetry mode, and bowl-shaped groove structures are arranged at the opposite ends of the pair of steel plates in a matched mode. A waterproof device is arranged below the bowl-shaped groove and comprises a plurality of layers of waterproof plates which are mutually stacked, and the waterproof plates are respectively connected with the steel plates on the two sides in a staggered manner; by arranging the bowl-shaped groove structure with the upward opening, dust and sundries accumulated in the expansion joint can be automatically discharged, or the expansion joint can be squeezed to be loose so as to be convenient to clean; by arranging the multiple layers of waterproof plates which are installed in a staggered mode and are in clearance fit, movement of the expansion joint in the bridge span direction and the direction perpendicular to the bridge span direction cannot be affected.

Description

Technical Field

[0001] The utility model relates to the technical field of road and bridge engineering, in particular to a dustproof and drainage expansion joint device. Background Art

[0002] Expansion joints are a type of building structure commonly used in the field of bridges and roads. They refer to structural joints set up to prevent building components from being squeezed and fractured when they expand due to temperature changes. Expansion joints usually divide building components above the foundation, such as walls, floor slabs, roofs, bridges, etc., into two independent parts, so that the building or structure can expand and contract horizontally along the length direction, and absorb the length changes caused by its expansion through the expansion joints.

[0003] Since expansion joints are commonly used in the field of roads and bridges, they usually need to be set up in the open air for a long time. It is very easy for dust to accumulate and water to accumulate during use. Dust and water accumulation will clog the expansion joint structure, erode and damage the internal structure of the expansion joint. If there is no reasonable dust and drainage structure, it will seriously affect the service life of the expansion joint, and then affect the safety of the entire road and bridge structure. There is an existing patent with application number 201922088617.4, which discloses a bridge dust-proof expansion joint, including a pair of symmetrically arranged steel sections placed in the bridge, a dust-proof rubber strip is provided in the middle and upper part of the pair of steel sections, and a water-stop rubber strip is provided in the middle. The utility model can prevent rainwater, ballast and debris from entering the expansion joint, and the temperature difference changes under seasonal changes will not affect the natural law of thermal expansion and contraction of the beams and slabs, thereby increasing the service life of the bridge expansion joint. However, it is still not effective for dust accumulation after years of use, and lacks the ability to automatically discharge dust and debris. Utility Model Content

[0004] The utility model aims to provide a dustproof drainage expansion joint which can automatically discharge dust and debris.

[0005] Based on the above purpose, the utility model adopts the following technical solutions:

[0006] A dustproof drainage expansion joint device comprises a pair of horizontally arranged steel plates, the two steel plates are arranged on the same horizontal plane; the pair of steel plates are gap-matched, and a pair of arc-shaped notches are symmetrically arranged on the opposite end surfaces of the two steel plates; the pair of arc-shaped notches are respectively arranged in the upper half of the end sides of the two steel plates, and the opposite end portions of the pair of steel plates cooperate to form a bowl-shaped groove open upward; a waterproof device is arranged below the steel plate, and the waterproof device comprises a waterproof plate group arranged with gap matching.

[0007] Preferably, a pair of steel plates are both T-shaped structures, including a horizontal section and a vertical section arranged at the middle position of the bottom of the horizontal section; multiple waterproof boards are arranged between the vertical sections of the steel plates on both sides, and the waterproof boards are alternately connected to the vertical sections of the steel plates on both sides.

[0008] Preferably, the waterproof device includes an upper waterproof board, one end of which is connected to the vertical section of the steel plate on one side; a lower waterproof board is provided in a gap fit below the upper waterproof board, one end of which is fixedly connected to the vertical section of the steel plate on the other side; a waterproof support plate is provided below the lower waterproof board, one end of which is fixedly connected to the vertical section of the steel plate on the same side as the upper waterproof board.

[0009] Preferably, the lengths of the upper waterproof board and the lower waterproof board are both greater than half of the distance between the vertical sections of a pair of steel plates, and less than the distance between the vertical sections of a pair of steel plates.

[0010] Preferably, the waterproof support plate is a Z-shaped structure, comprising an upper horizontal section and a lower horizontal section connected by an inclined connecting section; the lower horizontal section is fixedly connected to the steel plate, and the intersecting and overlapping sections of the upper waterproof plate, the lower waterproof plate and the upper horizontal section of the waterproof support plate in the vertical direction are arranged below the bowl-shaped groove.

[0011] Preferably, a cylindrical end cap is provided at one end where the upper waterproof board is connected to the steel plate, and a rotation groove is provided at the intersection of the horizontal section and the vertical section of one steel plate; an arc-shaped groove cooperating with the cylindrical end cap is provided on the rotation groove, and the cylindrical end cap of the upper waterproof board is rotatably connected to the arc-shaped groove in the rotation groove; the lower waterproof board and the waterproof support plate are both fixedly connected to the steel plate by welding.

[0012] The beneficial effects of the utility model are:

[0013] The utility model designs a bowl-shaped steel plate expansion joint structure, in which a pair of arc-shaped notches are formed on the steel plates on both sides of the top of the expansion joint by cutting and grinding, and the like, and the pair of arc-shaped notches can be combined at the joint to form a bowl-shaped groove opening upward; after dust and other debris enter and accumulate inside the expansion joint, when temperature changes and the steel plate expands, the width of the expansion joint is squeezed and reduced, and the deposits inside will be squeezed upward out of the expansion joint through the bowl-shaped groove, or the accumulated debris will be squeezed loose, making it easy to clean.

[0014] The utility model arranges three layers of waterproof plates which are overlapped up and down to form a multi-layer drainage structure. The upper waterproof plate, the lower waterproof plate and the top horizontal sections of the waterproof support plate are overlapped up and down in a staggered manner. The position where the three plates are overlapped up and down is directly below the bowl-shaped groove of the expansion joint, so that water that enters the expansion joint through the bowl-shaped groove can be quickly discharged.

[0015] The three waterproof boards of the utility model are staggeredly connected to the vertical sections of the T-shaped steel plates on both sides. When the steel plates expand and contract due to heat, the multi-layer waterproof boards can move along with the steel plates in two directions, along the bridge span direction and perpendicular to the bridge span direction, without interfering with each other.

[0016] The upper waterproof board of the utility model is rotatably connected to the steel plate through a rotating groove. In this way, during construction and installation, the position of the upper waterproof board is determined, and it is only necessary to reasonably arrange the lower waterproof board and set the waterproof support plate according to the height of the lower waterproof board. This makes construction more convenient and can prevent the upper waterproof board that has not been welded from being separated from the lower waterproof board and losing its drainage function. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the overall structural front view of the utility model;

[0018] Figure 2 It is a partially enlarged front view of the rotating tank structure of the utility model;

[0019] Figure 3 It is a partially enlarged front view of the bowl-shaped groove structure of the utility model;

[0020] Figure 4 It is a top view of the utility model.

[0021] In the figure: steel plate 1; upper waterproof plate 2; rotation trough 3; lower waterproof plate 4; waterproof support plate 5. DETAILED DESCRIPTION

[0022] The following is a further explanation of the present invention in conjunction with specific embodiments. Figure 1 As shown, this embodiment is a dustproof drainage expansion joint device, which is used for bridges and other structures to absorb deformation caused by expansion of materials; it mainly includes a pair of symmetrically arranged steel plates 1, and the gaps between the steel plates 1 are matched.

[0023] At the opposite ends of the pair of steel plates 1, i.e., at the joints, a pair of matching arc-shaped notch structures are provided; the opening directions of the pair of arc-shaped notches are opposite to each other, so that they cooperate to form a bowl-shaped groove structure; Figure 4 As shown, a pair of steel plates 1 are tooth-shaped and fit each other with a gap, and a bowl-shaped groove structure is arranged along the joint of the toothed steel plates 1; the opening direction of the bowl-shaped groove structure faces upward, and when the steel plate expands due to heat and the expansion joint gap is reduced, the dust and debris accumulated therein will be squeezed upward and discharged out of the bowl-shaped groove; when the deposits are too small to be discharged, they will also stay in the bowl-shaped groove, and because the internal space is larger than the original expansion joint gap, the deposits will become loose and easy to clean.

[0024] A waterproof device is arranged below the bowl-shaped groove of the expansion joint, and the waterproof device includes a multi-layer waterproof board structure, and the multi-layer waterproof board specifically includes an upper waterproof board 2, a lower waterproof board 4 and a waterproof support board 5; the cross-section of the steel plate 1 is T-shaped, and its vertical sections are arranged on both sides of the multi-layer waterproof board structure, and the multi-layer waterproof boards are connected to the inner side surfaces of the vertical sections of the steel plate 1; wherein, the lower waterproof board 4 and the waterproof support board 5 are fixedly connected to the vertical section of the steel plate 1 by welding, and the upper waterproof board 2 is connected to the steel plate 1 by a hinged rotating connection.

[0025] like Figure 2 As shown, a rotation groove 3 is fixedly provided at the angle between the horizontal section and the vertical section of the steel plate 1 on the left side; an arc-shaped groove structure is provided in the rotation groove 3, and a cylindrical end head matching therewith is provided on one end of the upper waterproof plate 2; the cylindrical end head can be inserted into the arc-shaped groove and rotated around the central axis, so that the upper waterproof plate 2 can be rotatably connected to the rotation groove 3; in this way, there is no need to adjust the position of the upper waterproof plate 2 during installation and construction, but only the position of the lower waterproof plate 4 and the waterproof support plate 5 needs to be reasonably set; after determining the position of the lower protective water board 4, the upper waterproof plate 2 is rotated to make it match with the lower waterproof plate 4 with a reasonable gap, so that the construction is more convenient.

[0026] The lower waterproof board 4 and the upper waterproof board 2 are both straight board structures, and their lengths are between 0.5 times and 0.75 times the vertical segment spacing of the two T-shaped steel plates 1, so that the free ends overlap each other, and the intersecting and overlapping parts in the vertical direction cover the position of the bowl-shaped groove; Figure 1 As shown, the waterproof support plate 5 is a Z-shaped structure, the bottom end of which is fixedly connected to the vertical section of the steel plate 1 on the left side by welding, and the horizontal section of the other end is overlapped with the overlapping section of the upper waterproof plate 2 and the lower waterproof plate 4, as shown in FIG. Figure 3 As shown; when rainwater enters the expansion joint from the bowl-shaped groove, it will be discharged through the gap-fitting multi-layer waterproof panels instead of accumulating in the expansion joint.

[0027] The above description is only a further explanation of the present invention in combination with specific embodiments. All descriptions do not limit the protection scope of the present invention. Any changes or replacement solutions that can be easily thought of by technicians in this field within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A dustproof and drainage expansion joint device, comprising a pair of horizontally arranged steel plates, characterized in that: A pair of the steel plates are gap-fitted, and a pair of arc-shaped notches are symmetrically arranged on the opposite end surfaces of the two steel plates; the pair of arc-shaped notches are respectively arranged on the upper half of the end sides of the two steel plates, and the opposite ends of the pair of steel plates are matched to form a bowl-shaped groove open upward; a waterproof device is arranged under the steel plate, and the waterproof device includes a waterproof plate group arranged with gap fitting.

2. The dustproof and drainage expansion joint device according to claim 1, characterized in that: A pair of the steel plates are both T-shaped structures, including a horizontal section and a vertical section arranged at the middle position of the bottom of the horizontal section; the waterproof board group includes multiple waterproof boards, and the multiple waterproof boards are all arranged between the vertical sections of the steel plates on both sides, and the waterproof boards are alternately connected to the vertical sections of the steel plates on both sides.

3. The dustproof and drainage expansion joint device according to claim 2 is characterized in that: The waterproof device includes an upper waterproof board, one end of which is connected to a vertical section of a steel plate on one side; a lower waterproof board is provided in a gap fit below the upper waterproof board, one end of which is fixedly connected to a vertical section of a steel plate on the other side; a waterproof support plate is provided below the lower waterproof board, one end of which is fixedly connected to the vertical section of a steel plate on the same side as the upper waterproof board.

4. The dustproof and drainage expansion joint device according to claim 3 is characterized in that: The lengths of the upper waterproof board and the lower waterproof board are both greater than half of the distance between the vertical sections of a pair of steel plates, and less than the distance between the vertical sections of a pair of steel plates.

5. The dust-proof and drainage expansion joint device according to claim 4, characterized in that: The waterproof support plate is a Z-shaped structure, including an upper horizontal section and a lower horizontal section connected by an inclined connecting section; the lower horizontal section is fixedly connected to the steel plate, and the upper waterproof plate, the lower waterproof plate and the upper horizontal section of the waterproof support plate are intersected and overlapped in the vertical direction at a position below the bowl-shaped groove.

6. The dustproof and drainage expansion joint device according to claim 5, characterized in that: A cylindrical end cap is provided at one end where the upper waterproof plate is connected to the steel plate, and a rotation groove is provided at the intersection of the horizontal section and the vertical section of one of the steel plates; an arc-shaped groove cooperating with the cylindrical end cap is provided on the rotation groove, and the cylindrical end cap of the upper waterproof plate is rotatably connected to the arc-shaped groove in the rotation groove; the lower waterproof plate and the waterproof support plate are both fixedly connected to the steel plate by welding.

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