Water conservancy construction cofferdam

Abstract

The utility model discloses a water conservancy construction cofferdam which comprises four L-shaped stand columns, three layers of square fixing frames are arranged among the four L-shaped stand columns, a plurality of cofferdam plates and a plurality of sealing strips are arranged among the four L-shaped stand columns, and the four L-shaped stand columns are spliced into a cuboid through the cofferdam plates and the sealing strips. And surrounding plate inserting grooves are formed in the opposite side faces of every two L-shaped stand columns, splicing grooves are formed in the tops and the bottoms of the multiple cofferdam plates, the two ends of the multiple sealing strips are connected with sealing strip limiting blocks, and connecting structures are arranged at the connecting positions of the three layers of square fixing frames and the four L-shaped stand columns. According to the water conservancy construction cofferdam, the multiple cofferdam plates are matched with the expansion water stop strips on the surfaces of the sealing strips, the expansion water stop strips expand after meeting water to seal gaps between the cofferdam plates and the sealing strips, the sealing performance is good, and the situation that water seepage occurs due to the poor sealing performance of the steel plates is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cofferdams, in particular to a water conservancy construction cofferdam. Background Art

[0002] A cofferdam is a temporary retaining structure built during the construction of a water conservancy project to build permanent water conservancy facilities. Its function is to prevent water and soil from entering the construction site of the building so that drainage can be drained within the cofferdam, foundation pits can be excavated, and buildings can be built.

[0003] At present, the cofferdam related technologies on the market are to splice multiple steel plates to form an enclosing fence. At the same time, the bottom of the steel plate is deeply inserted into the bottom of the water, and gaps will appear between the splicing of multiple steel plates. Therefore, other waterproof measures are needed to fill the gaps before the effect of construction cofferdam can be achieved. Such waterproof measures not only require strict gap filling work, but also are prone to water seepage after long-term immersion, which can easily endanger the safety of construction workers. Therefore, a water conservancy construction cofferdam is proposed to solve the above problems. Utility Model Content

[0004] In order to solve the technical problems existing in the background technology, the utility model proposes a water conservancy construction cofferdam, which has the advantages of simple laying of cofferdam steel plates and good sealing performance, reducing water seepage caused by poor sealing of steel plates, and improving safety.

[0005] The utility model provides a water conservancy construction cofferdam, comprising four L-shaped columns, the four L-shaped columns are distributed at four corners to form a rectangle, three layers of square fixing frames are arranged between the four L-shaped columns, and a fixing frame splicing structure for splicing the three layers of square fixing frames is arranged between the three layers of square fixing frames;

[0006] A plurality of cofferdam plates and a plurality of sealing strips are arranged between the four L-shaped columns, and the plurality of cofferdam plates and the plurality of sealing strips splice the four L-shaped columns into a rectangular parallelepiped, a cofferdam slot is provided on the opposite side of each two L-shaped columns, and the two sides of the cofferdam plates are respectively embedded in the cofferdam slots, and the tops and bottoms of the plurality of cofferdam plates are provided with splicing grooves, a sealing strip is arranged between the two cofferdam plates, and sealing strip limit blocks are connected to both ends of the sealing strips, and the two sealing strip limit blocks at both ends of the sealing strips are inserted in the two cofferdam slots, and a connecting structure is arranged at the junction of the three-layer square fixing frame and the four L-shaped columns.

[0007] Preferably, a layer of expansion water stop strip is provided on the outer surface of the plurality of sealing strips. After the surface of the sealing strip expands, the expansion water stop strip will fill the upper and lower splicing grooves of the cofferdam plate to achieve sealing. An annular groove is provided at every end in the plurality of enclosure plate slots, and the two sealing strip limit blocks at both ends of each sealing strip are respectively adapted to the annular grooves in the enclosure plate slots.

[0008] Preferably, the fixing frame splicing structure includes a middle section support column, the top four corners and the bottom four corners of the three layers of the square fixing frames are provided with limiting grooves, the limiting grooves between the two layers of the square fixing frames are provided with corner columns, and the middle section support column is divided into four, and the four middle section support columns are respectively arranged between the four borders of the two square fixing frames.

[0009] Preferably, the connecting structure includes fixed angle brackets and connecting bolts, three fixed angle brackets are arranged at the intersection of the four L-shaped columns and the three-layer square fixing brackets, three connecting angle blocks are arranged at the four corners of the three-layer square fixing brackets, and the connecting bolts penetrate the connecting angle blocks and the fixed angle brackets and are fixed by nuts.

[0010] Preferably, the fixed angle bracket is divided into two layers, and the two layers of the fixed angle bracket sandwich the connecting angle block in the middle.

[0011] Compared with the prior art, the above technical solution of the utility model has the following beneficial technical effects:

[0012] The water conservancy construction cofferdam uses multiple cofferdam plates in conjunction with the expansion water stop strips on the surface of the sealing strips. When they encounter water, they expand to seal the gaps between the cofferdam plates and the sealing strips, thereby achieving better sealing and reducing water seepage caused by poor sealing of the steel plates. At the same time, the cofferdam plates are directly inserted into the splicing grooves opened on the two L-shaped columns, making the laying of the cofferdam steel plates simple and convenient for construction and removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The utility model is a structural schematic diagram of a water conservancy construction cofferdam proposed by the utility model.

[0014] Figure 2 The utility model is a schematic diagram of the cross-sectional structure of a water conservancy construction cofferdam.

[0015] Figure 3 The utility model is a schematic diagram of an L-shaped column structure in a water conservancy construction cofferdam.

[0016] Figure 4 The utility model is a schematic diagram of the sealing strip structure in a water conservancy construction cofferdam.

[0017] Figure 5The utility model is a schematic diagram of the cofferdam plate structure in a water conservancy construction cofferdam.

[0018] Figure 6 A water conservancy construction cofferdam proposed by the utility model Figure 2 Schematic diagram of the enlarged structure of A.

[0019] Figure numerals: 1. L-shaped column; 2. square fixing frame; 3. fixing frame splicing structure; 301. corner column; 302. middle support column; 303. corner column limiting groove; 4. cofferdam plate; 5. sealing strip; 6. connecting structure; 601. fixing angle frame; 602. connecting bolt; 603. connecting corner block; 7. enclosure slot; 8. sealing strip limiting block; 9. splicing groove. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0021] In the description of the utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply 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 on the utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0022] In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, welding, riveting, bonding, etc., or a detachable connection, threaded connection, key connection, pin connection, etc., 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, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0023] like Figure 1-6As shown, a water conservancy construction cofferdam proposed by the utility model comprises four L-shaped columns 1, the four L-shaped columns 1 are distributed at four corners to form a rectangle, a three-layer square fixing frame 2 is arranged between the four L-shaped columns 1, and a fixing frame splicing structure 3 for splicing the three-layer square fixing frames 2 is arranged between the three-layer square fixing frames 2;

[0024] A plurality of cofferdam plates 4 and a plurality of sealing strips 5 are arranged between the four L-shaped columns 1, and the plurality of cofferdam plates 4 and the plurality of sealing strips 5 splice the four L-shaped columns 1 into a rectangular parallelepiped, and a cofferdam slot 7 is provided on the opposite side of each two L-shaped columns 1, and the two sides of the plurality of cofferdam plates 4 are respectively embedded in the inside of the cofferdam slot 7, and the top and bottom of the plurality of cofferdam plates 4 are provided with a splicing groove 9, a sealing strip 5 is arranged between the two cofferdam plates 4, and a layer of expansion water stop strip is arranged on the outer surface of the plurality of sealing strips 5, and the sealing strips After the surface expands, the expansion water stop strip will fill the upper and lower splicing grooves 9 of the cofferdam plate 4 to achieve sealing. Both ends of the multiple sealing strips 5 are connected with sealing strip limit blocks 8, and the two sealing strip limit blocks 8 at both ends of the sealing strip 5 are inserted in the two enclosure slots 7. An annular groove is opened at every other end in the multiple enclosure slots 7, and the two sealing strip limit blocks 8 at both ends of each sealing strip 5 are respectively matched with the annular grooves in the enclosure slot 7. A connecting structure 6 is provided at the junction of the three-layer square fixing frame 2 and the four L-shaped columns 1.

[0025] It should be noted that the bottom of the cofferdam plate 4 of the bottom layer is parallel and has no splicing groove 9. The plug of the sealing strip limit block 8 is cut into two shapes of limit blocks, a flat mouth and an annular mouth. The flat mouth of the sealing strip limit block 8 passes through the cofferdam slot 7 to enter the interior, and then the sealing strip limit block 8 is rotated to match the annular mouth with the annular groove in the cofferdam slot 7. Figure 3 , Figure 4 shown.

[0026] Specifically, when a cofferdam is required at a water conservancy construction site, first fill up the soil at the location where the construction is required in the canal, then pump out the water level at the construction location, and then insert four L-shaped columns 1 to the bottom of the water, and then connect the four L-shaped columns 1 and the three-layer square fixing frame 2 together through the connecting structure 6. At the same time, it is also necessary to splice the three-layer square fixing frame 2 together through the fixing frame splicing structure 3, and then pass multiple cofferdam plates 4 through the splicing grooves 9 opened on the four L-shaped columns 1 and insert them between two L-shaped columns 1 to form four-sided blocking walls. At the same time, every two cofferdam plates 4 are connected by a sealing strip 5 in the middle, so that the surface of the sealing strip 5 is just embedded in the splicing grooves 9 on the two cofferdam plates 4, thereby achieving a sealing effect.

[0027] In an optional embodiment, the fixing frame splicing structure 3 includes a middle section support column 302, and the top four corners and the bottom four corners of the three-layer square fixing frame 2 are provided with limiting grooves 303. The limiting grooves 303 between the two layers of square fixing frames 2 are provided with corner columns 301. The middle section support column 302 is divided into four, and the four middle section support columns 302 are respectively arranged between the four borders of the two square fixing frames 2.

[0028] Specifically, the top four corners of the four frames of every two square fixing frames 2 are respectively inserted into the limiting grooves 303 on the four corners through the corner columns 301 to form four corner pillars, and then the middle support columns 302 are respectively fixed to the tops of the four frames of the two square fixing frames 2 by bolts to complete the connection of every two square fixing frames 2. The third square fixing frame 2 is also connected and fixed in this way, thereby completing the fixed connection of the three square fixing frames 2.

[0029] In an optional embodiment, the connecting structure 6 includes a fixed angle bracket 601 and a connecting bolt 602. Three fixed angle brackets 601 are arranged at the intersection of the four L-shaped columns 1 and the three-layer square fixing bracket 2. Three connecting angle blocks 603 are arranged at the four corners of the three-layer square fixing bracket 2. The connecting bolts 602 penetrate the connecting angle blocks 603 and the fixed angle bracket 601 and are fixed by nuts. The fixed angle bracket 601 is divided into two layers, and the two layers of fixed angle brackets 601 sandwich the connecting angle blocks 603 in the middle.

[0030] Specifically, when the three connected square fixing frames 2 need to be fixed to the four L-shaped columns 1, the connecting corner blocks 603 at the four corners of the three square fixing frames 2 need to be inserted into the fixing angle frames 601 at the inner corners of the four L-shaped columns 1, and then connected and fixed using connecting bolts 602, thereby completing the effect of splicing the square fixing frames 2 and the four L-shaped columns 1.

[0031] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation on the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the claims attached to the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims, or the equivalent forms of such scope and boundaries.

Claims

1. A water conservancy construction cofferdam, characterized in that: It comprises four L-shaped columns (1), the four L-shaped columns (1) are distributed at four corners to form a rectangle, three layers of square fixing frames (2) are arranged between the four L-shaped columns (1), and a fixing frame splicing structure (3) for splicing the three layers of square fixing frames (2) is arranged between the three layers of square fixing frames (2); A plurality of cofferdam plates (4) and a plurality of sealing strips (5) are arranged between the four L-shaped columns (1), and the plurality of cofferdam plates (4) and the plurality of sealing strips (5) splice the four L-shaped columns (1) into a rectangular parallelepiped. A cofferdam slot (7) is provided on the opposite side of each two L-shaped columns (1). Both sides of the plurality of cofferdam plates (4) are respectively embedded in the interior of the cofferdam slot (7). The top and bottom of the plurality of cofferdam plates (4) are provided with a splicing groove (9). A sealing strip (5) is arranged between two cofferdam plates (4). Both ends of the plurality of sealing strips (5) are connected to sealing strip limit blocks (8), and the two sealing strip limit blocks (8) at both ends of the sealing strip (5) are inserted into the two cofferdam slots (7). A connecting structure (6) is provided at the junction of the three-layer square fixing frame (2) and the four L-shaped columns (1).

2. A water conservancy construction cofferdam according to claim 1, characterized in that: The outer surfaces of the plurality of sealing strips (5) are provided with a layer of expansion water stop strips. When the surface of the sealing strips expands, the expansion water stop strips will fill the upper and lower joint grooves (9) of the cofferdam plate (4) to achieve sealing. An annular groove is provided at intervals between the ends of the plurality of enclosure slots (7), and the two sealing strip limit blocks (8) at the two ends of each sealing strip (5) are respectively matched with the annular grooves in the enclosure slots (7).

3. A water conservancy construction cofferdam according to claim 1, characterized in that: The fixing frame splicing structure (3) comprises a middle section support column (302), the top four corners and the bottom four corners of the three layers of the square fixing frames (2) are all provided with limiting grooves (303), the limiting grooves (303) between the two layers of the square fixing frames (2) are provided with corner columns (301), the middle section support column (302) is divided into four, and the four middle section support columns (302) are respectively provided between the four borders of the two square fixing frames (2).

4. A water conservancy construction cofferdam according to claim 1, characterized in that: The connection structure (6) comprises a fixed angle frame (601) and a connection bolt (602); three fixed angle frames (601) are arranged at the intersection of the four L-shaped columns (1) and the three layers of the square fixed frames (2); three connecting angle blocks (603) are arranged at the four corners of the three layers of the square fixed frames (2); the connection bolt (602) passes through the connecting angle blocks (603) and the fixed angle frame (601) and is fixed by a nut.

5. A water conservancy construction cofferdam according to claim 4, characterized in that: The fixed angle bracket (601) is divided into two layers, and the two layers of the fixed angle bracket (601) sandwich the connecting angle block (603) in the middle.

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