A cofferdam structure for hydraulic construction

Abstract

This utility model relates to the field of water conservancy engineering construction technology, and provides a cofferdam structure for water conservancy construction, including a baffle unit that can enclose a cavity. A tensioning unit is installed on the inner side of the baffle unit within the cavity, and a flow guiding unit is installed on the outer side of the baffle unit, which can slide horizontally along the baffle unit. The baffle unit includes several inner baffles connected horizontally, several outer baffles connected vertically, and corner connecting plates. The inner baffles, outer baffles, and tensioning units at both ends of the baffle unit are all connected to the corner connecting plates. The flow guiding unit includes a translation component and a flow guiding plate. The translation component is slidably disposed on the upper side of the baffle unit, and the flow guiding plate is disposed on the translation component and slidably adheres to the outer surface of the baffle unit facing the water flow. This utility model allows for easy assembly and disassembly, and can clean up silt accumulated on the upstream side of the cofferdam, improving the safety of cofferdam use.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy engineering construction technology, specifically to a cofferdam structure for water conservancy construction. Background Technology

[0002] Water conservancy construction cofferdams are water-retaining structures used in water conservancy projects to temporarily protect the construction area. They are constructed by combining units such as baffles and supports to create a closed or semi-closed cavity that can prevent external water flow from entering the construction area. This creates a dry construction environment for underwater foundation excavation, concrete pouring, and other operations. They must have a certain water-retaining and impact-resistant capacity, and the support range and position can usually be flexibly adjusted according to the construction conditions. After construction, they can be dismantled or reused. They are key temporary facilities to ensure the smooth progress of water conservancy projects.

[0003] Traditional water conservancy construction cofferdams are mostly constructed by splicing together single baffles, which has many shortcomings: First, the assembly and disassembly of the baffles is cumbersome, the splicing method is complicated, the construction efficiency is low, and it is not conducive to rapid turnover and use; Second, after blocking the water flow, the outer side of the cofferdam is prone to silt accumulation, especially the water-facing side of the cofferdam. When used in rivers with slow water flow and high silt content, silt accumulation is more likely to occur. The accumulated silt will cause additional lateral pressure on the baffles of the cofferdam, thereby increasing the supporting load on the baffles and reducing the safety of use.

[0004] Therefore, in order to address the above problems, a cofferdam structure for hydraulic construction is proposed. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies by developing a cofferdam structure for hydraulic construction. This invention allows for easy assembly and disassembly, and enables the clearing of silt and sand accumulated on the water-facing side of the cofferdam, thereby improving the safety of cofferdam use.

[0006] To achieve the above objectives, this utility model employs the following technical solution: A cofferdam structure for hydraulic construction includes a baffle unit that can enclose a cavity. A tensioning unit is provided on the baffle unit inside the cavity, and a flow guiding unit is provided on the baffle unit outside the cavity. The flow guiding unit can slide along the horizontal direction of the baffle unit. The baffle unit includes several inner baffles that are connected to each other in the left and right directions, several outer baffles that are connected to each other in the top and bottom directions, and corner connecting plates. The inner baffles, outer baffles, and tensioning units at both ends of the baffle unit are all connected to the corner connecting plates. The flow guiding unit includes a translation component and a flow guiding plate. The translation component is slidably disposed on the upper side of the baffle unit, and the flow guiding plate is disposed on the translation component and is slidably attached to the outer surface of the baffle unit on the side facing the water flow.

[0007] Preferably, the bottom of the inner baffle is provided with several piles for insertion into the riverbed, and U-shaped blocks with opposite opening directions are provided on both sides of the inner baffle along its length. The U-shaped blocks of adjacent inner baffles can be interlocked, and a waterproof layer is provided on both the inner and outer surfaces of the U-shaped blocks.

[0008] Preferably, several through holes are made through the outer baffle, and a tensioning member is installed through the through holes. The tensioning member is used to tightly connect the upper and lower adjacent outer baffles into one piece. Both ends of the outer baffle are provided with clamping plates for connecting with corner connecting plates. The sides of the outer baffle and the surface of the clamping plates are provided with a waterproof layer.

[0009] Preferably, the corner connecting plate includes a corner plug connected to the U-shaped plug of the inner baffle, a slot connected to the card plate of the outer baffle, and a pull seat connected to the tensioning unit. Several pull seats are provided along the length direction of the corner connecting plate. Several nail holes are opened on the outer wall of the slot along the length direction, and screws are provided in the nail holes for connecting the slot and the card plate of the outer baffle.

[0010] Preferably, the tensioning unit includes a top seat that can contact the inner wall of the inner baffle. A rotating cylinder is rotatably mounted on the top seat. The inner sides of both ends of the rotating cylinder are provided with internal threads of opposite directions. Both ends of the rotating cylinder are threadedly connected to a threaded shaft. A pull ring is rotatably mounted on the end of the threaded shaft away from the rotating cylinder. The pull ring is rotatably mounted on the corner connecting plate. A locking hole is provided in the middle of the rotating drum, and a locking element is detachably installed in the locking hole. The locking element can contact the inner baffle.

[0011] Preferably, the translation component includes a translation seat, which is inverted L-shaped. The bottom and side of the translation seat are respectively provided with a moving wheel and a balance wheel. The moving wheel is used to contact the upper side of the inner baffle and can drive the translation seat to move. The balance wheel is used to contact the side of the inner baffle located inside the cavity. The inner baffle has a groove corresponding to the position of the balance wheel, and the balance wheel is rolled and locked in the groove.

[0012] Preferably, the guide plate includes a surface A that contacts the outer baffle and a surface B that contacts the water flow, and surface B is symmetrical about the vertical center surface of surface A.

[0013] Preferably, the B-side of the deflector is set as a smooth plane.

[0014] Preferably, the B-side of the deflector is set as a concave, smooth arc-shaped surface.

[0015] The effects provided in the utility model description are merely those of the embodiments, and not all the effects of the utility model. The above technical solution has the following advantages: 1. This utility model, by setting a flow guiding unit, has a translation component that can slide horizontally along the baffle unit to drive the flow guiding plate to move. The flow guiding plate faces the direction of water flow and has an isosceles triangle cross section, which can effectively and evenly disperse the impact force of the water flow, reduce the scouring and wear of the baffle unit by the water flow, and guide the water flow to both sides. The impact force of the water flow will then push the mud and sand accumulated on the outside of the baffle unit to both sides. With the left and right movement of the translation component, the mud and sand will be pushed away, avoiding excessive force on the baffle caused by the accumulation of mud and sand, thus improving safety. 2. This utility model sets up baffle units, in which the inner baffles of the baffle units are connected to each other by U-shaped plugs, and the outer baffles of the baffle units are tightly connected by tensioning members. The corner connecting plates of the baffle units are connected to the inner baffles and the outer baffles by corner plugs and slots respectively. The overall splicing method is simple, no complicated tools are required, and it is easy to assemble and disassemble quickly, improves construction efficiency, and facilitates the reuse of the cofferdam structure. 3. By setting up a tensioning unit, rotating the rotating drum of the tensioning unit, and connecting the internal threads at both ends of the rotating drum with the threaded shafts on both sides, the corner connecting plates on both sides of the baffle unit are brought closer to each other, so as to squeeze the waterproof layer between the inner baffles. Combined with the snap-fit ​​of the outer baffle, the integrity and waterproofness of the cofferdam are improved. Attached Figure Description

[0016] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is a schematic diagram of the baffle unit according to an embodiment of the present utility model; Figure 3 This is a schematic diagram of the corner connecting plate according to an embodiment of the present utility model; Figure 4 This is a schematic diagram of the tensioning unit according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the flow guiding unit in an embodiment of the present invention. Figure 1 ; Figure 6 This is a schematic diagram of the flow guiding unit in an embodiment of the present invention. Figure 2 ; Figure 7 This is a top view schematic diagram of the guide vanes with different cross sections according to an embodiment of the present invention.

[0018] In the diagram, 1 is the baffle unit; 2 is the tensioning unit; 3 is the flow guiding unit; 11 is the inner baffle; 12 is the outer baffle; 13 is the corner connecting plate; 21 is the top seat; 22 is the rotating drum; 23 is the threaded shaft; 24 is the pull ring; 25 is the locking component; 31 is the translation assembly; 32 is the flow guiding plate; 111 is the stake; 112 is the U-shaped insert; 121 is the tensioning component; 122 is the clamping plate; 131 is the corner insert; 132 is the clamping groove; 133 is the pull seat; 134 is the nail hole; 311 is the translation seat; 312 is the moving wheel; 313 is the balance wheel; 314 is the slide groove; 321 is surface A; 322 is surface B. 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] like Figures 1-7 As shown, this utility model provides a technical solution: A cofferdam structure for hydraulic construction includes a baffle unit 1, which can enclose a cavity. A tensioning unit 2 is provided on the inner side of the baffle unit 1 to tension the baffle unit 1 into a whole. A flow guiding unit 3 is provided on the outer side of the baffle unit 1, and the flow guiding unit 3 can slide along the horizontal direction of the baffle unit 1. The baffle unit 1 includes several inner baffles 11 connected horizontally, several outer baffles 12 connected vertically, and corner connecting plates 13. The inner baffles 11, outer baffles 12, and tensioning units 2 at both ends of the baffle unit 1 are all connected to the corner connecting plates 13. The flow guiding unit 3 includes a translation component 31 and a flow guiding plate 32. The translation component 31 is slidably disposed on the upper side of the baffle unit 1, and the flow guiding plate 32 is disposed on the translation component 31 and slides tightly against the outer surface of the baffle unit 1 on the side facing the water flow.

[0021] In an optional embodiment, a plurality of stakes 111 are provided at the bottom of the inner baffle 11 for insertion into the riverbed. U-shaped inserts 112 with opposite opening directions are provided on both sides of the inner baffle 11 along its length direction. The U-shaped inserts 112 of adjacent inner baffles 11 can be inserted into each other. A waterproof layer is provided on the inner and outer surfaces of the U-shaped inserts 112. The waterproof layer is made of rubber waterproof coating.

[0022] In an optional embodiment, a plurality of through holes are formed on the outer baffle 12, and tensioning members 121 are installed through the through holes. The tensioning members 121 can press the outer baffles 12 together and connect them tightly as a whole. Both ends of the outer baffle 12 are provided with clamping plates 122 for connecting with the corner connecting plate 13. The sides of the outer baffles 12 that are in contact with each other and the surface of the clamping plates 122 are provided with a waterproof layer, which is a rubber waterproof coating. Preferably, the tensioning members 121 are long bolts and nuts. The long bolts pass through the through holes, and the nuts are located on the upper end of the long bolts for easy tightening.

[0023] In an optional embodiment, the corner connecting plate 13 includes a corner plug 131 connected to the U-shaped plug 112 of the inner baffle 11, a slot 132 connected to the slot plate 122 of the outer baffle 12, and a pull seat 133 connected to the tensioning unit 2. Several pull seats 133 are arranged along the length of the corner connecting plate 13. Pull seats 133 of different heights are used to connect the tensioning units 2 on different sides of the cofferdam. The inner sides of the corner plug 131 and the slot 132 are provided with a waterproof layer, which is a rubber waterproof coating.

[0024] In another embodiment, a plurality of nail holes 134 are evenly provided on the outer wall of the slot 132 along the length direction. Screws are provided in the nail holes 134. The screws are used to connect the slot 132 and the card plate 122 of the outer baffle 12, which further enhances the overall stability. The nail holes 134 are used to accommodate the nail heads of the screws to avoid affecting the sliding of the guide plate 32.

[0025] In an optional embodiment, the tensioning unit 2 includes a top seat 21 that can contact the inner wall of the inner baffle 11. A rotating cylinder 22 is rotatably mounted on the top seat 21. The inner sides of both ends of the rotating cylinder 22 are provided with internal threads in opposite directions. Both ends of the rotating cylinder 22 are threadedly connected to a threaded shaft 23. A pull ring 24 is rotatably mounted on the end of the threaded shaft 23 away from the rotating cylinder 22. The pull ring 24 is rotatably mounted on the pull seat 133 of the corner connecting plate 13. A locking hole is also provided in the middle of the rotating cylinder 22. A locking member 25 is detachably mounted in the locking hole. The locking member 25 can contact the inner baffle 11 and restrict the rotation of the rotating cylinder 22 at this time. Preferably, the locking member 25 is a pin inserted into the locking hole to prevent the rotating cylinder 22 from rotating under the tension of the threaded shaft 23, thereby improving the stability of the cofferdam.

[0026] In an optional embodiment, the translation component 31 includes a translation seat 311, which is movably disposed on the upper side of the baffle unit 1. The side of the translation seat 311 away from the cofferdam cavity is connected to the upper end of the guide plate 32 by a connecting bolt. Threaded holes are opened at corresponding positions on the upper end of the guide plate 32 and the translation seat 311, and connecting bolts are provided in the threaded holes to realize the detachable connection between the translation seat 311 and the guide plate 32, which facilitates the installation, disassembly and use of the device.

[0027] In an optional embodiment, the translation seat 311 is inverted L-shaped. The bottom and side of the translation seat 311 are respectively provided with a moving wheel 312 and a balance wheel 313. The moving wheel 312 is used to contact the upper side of the inner baffle 11 and can drive the translation seat 311 to move. The balance wheel 313 is used to contact the side of the inner baffle 11 located inside the cavity. The translation seat 311 is pushed manually.

[0028] In another embodiment, the moving wheel 312 is connected to the motor output end, and the motor is set inside the translation seat 311 to achieve automatic movement and reduce the labor intensity of the workers. The motor is selected as needed to drive the translation component 31 to move as a whole. Preferably, the motor is powered by a solar-charged battery, which is set inside the translation seat 311, and the solar panel is set on the top of the translation seat 311.

[0029] In an optional embodiment, the inner baffle 11 has a groove 314 at the position corresponding to the balance wheel 313. The balance wheel 313 is rolled and locked in the groove 314 to balance the weight and force of the guide plate 32, avoid the translation component 31 from being unstable under the impact of water flow, and improve the stability of the movement of the guide plate 32.

[0030] In an optional embodiment, the guide plate 32 is disposed on the translation seat 311. The guide plate 32 includes an A surface 321 that contacts the outer baffle 12 and a B surface 322 that contacts the water flow. The B surface 322 is symmetrical about the vertical center surface of the A surface 321. The cross-section of the guide plate 32 is an isosceles triangle, with the base of the isosceles triangle being the A surface 321 and the two isosceles surfaces being the B surface 322. It is a smooth plane to divert the water flow to both sides, reduce the impact force on the surface of the baffle, and flush away the silt accumulated on the front side of the baffle, thereby improving the safety of the cofferdam.

[0031] In an optional embodiment, surface B 322 is configured as a concave, smooth arc-shaped surface to accelerate the contact speed between the water flow and the baffle surface, avoid the slowing effect of the inclined plane surface B 322 on the water flow speed, and improve the quality of rinsing.

[0032] Working principle: Based on the size of the construction area, several inner baffles 11 are selected and interlocked. Corner connecting plates 13 are then installed on both sides of the interlocked inner baffles 11. Outer baffles 12 are then installed according to the distance between the corner connecting plates 13. Several outer baffles 12 are snapped together with the corner connecting plates 13, and the gaps between the outer baffles 12 are pressed together by tensioning members 121. Then, a tensioning unit 2 is installed, with its pull ring 24 placed on a tension seat 133 at the same height as the corner connecting plates 13 on both sides. Both ends of the rotating drum 22 are threadedly connected to threaded shafts 23, pressing the top seat 21 onto the inner baffles 11 to prevent movement. Then, the rotating drum 22 is rotated, causing the threaded shafts 23 at both ends to retract synchronously into the rotating drum 22. When the rotating drum 22 can no longer rotate, the inner baffles 11 press against each other, improving sealing and overall integrity. Then, the locking piece 25 is inserted into the locking hole in the middle of the rotating drum 22, so that one end of the locking piece 25 contacts the inner baffle 11, restricting the rotation of the rotating drum 22, preventing the threaded shaft 23 from loosening, and ensuring the support stability of the tensioning unit 2. Then, the integrity between the outer baffle 12 and the corner connecting plate 13 can be further strengthened by screws. The constructed cofferdam is placed in the construction position in the water, and the pile nails 111 are fully inserted into the riverbed. The flow guiding unit 3 is installed on the water-facing side of the cofferdam, and the translation component 31 of the flow guiding unit 3 is moved periodically or as needed to avoid sediment accumulation and improve the safety of the cofferdam.

[0033] Any aspects of this utility model that are not detailed herein are conventional technical means known to those skilled in the art.

[0034] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more unless otherwise explicitly specified.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

[0037] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A cofferdam structure for hydraulic construction, comprising a baffle unit (1), the baffle unit (1) being capable of enclosing a cavity, characterized in that, A tensioning unit (2) is provided on the baffle unit (1) inside the cavity, and a flow guiding unit (3) is provided on the baffle unit (1) outside the cavity, and the flow guiding unit (3) can slide along the horizontal direction of the baffle unit (1); The baffle unit (1) includes several inner baffles (11) that are connected to each other in the left and right, several outer baffles (12) that are connected to each other in the top and bottom, and corner connecting plates (13). The inner baffles (11), outer baffles (12) and tensioning units (2) at both ends of the baffle unit (1) are all connected to corner connecting plates (13). The flow guiding unit (3) includes a translation component (31) and a flow guiding plate (32). The translation component (31) is slidably disposed on the upper side of the baffle unit (1), and the flow guiding plate (32) is disposed on the translation component (31) and the flow guiding plate (32) is slidably attached to the outer side of the baffle unit (1) facing the water flow.

2. The cofferdam structure for hydraulic construction according to claim 1, characterized in that: Several stakes (111) are provided at the bottom of the inner baffle (11). U-shaped inserts (112) with opposite opening directions are provided on both sides of the inner baffle (11) along its length. The U-shaped inserts (112) of adjacent inner baffles (11) can be inserted into each other. Waterproof layers are provided on the inner and outer surfaces of the U-shaped inserts (112).

3. A cofferdam structure for hydraulic construction according to claim 2, characterized in that: Several through holes are opened through the outer baffle (12), and a tensioning member (121) is installed through the through holes. The tensioning member (121) is used to tightly connect the upper and lower adjacent outer baffles (12) into one unit. Both ends of the outer baffle (12) are provided with a clamping plate (122) for connecting with the corner connecting plate (13). The side of the outer baffle (12) and the surface of the clamping plate (122) are provided with a waterproof layer.

4. The cofferdam structure for hydraulic construction according to claim 3, characterized in that: The corner connecting plate (13) includes a corner plug (131) connected to the U-shaped plug (112) of the inner baffle (11) and a slot (132) connected to the card plate (122) of the outer baffle (12). The inner sides of the corner plug (131) and the slot (132) are provided with a waterproof layer.

5. A cofferdam structure for hydraulic construction according to claim 1, characterized in that: The translation component (31) includes a translation seat (311), which is movably disposed on the upper side of the baffle unit (1). The side of the translation seat (311) away from the cofferdam cavity is connected to the upper end of the guide plate (32) by connecting bolts.

6. A cofferdam structure for hydraulic construction according to claim 5, characterized in that: The guide plate (32) includes an A surface (321) that contacts the outer baffle (12) and a B surface (322) that contacts the water flow, and the B surface (322) is symmetrical about the vertical center surface of the A surface (321).

7. A cofferdam structure for hydraulic construction according to claim 6, characterized in that: Surface B (322) is set to a smooth plane.

8. A cofferdam structure for hydraulic construction according to claim 6, characterized in that: Surface B (322) is set as a concave, smooth arc surface.

Images