Water conservancy design construction cofferdam device

Abstract

The utility model discloses a cofferdam device for water conservancy design and construction, which belongs to the field of cofferdam devices and comprises a bottom ring seat and a plurality of prefabricated annular cofferdams, the prefabricated annular cofferdams are fixedly connected to the top surface of the bottom ring seat through a plurality of reinforcing mechanisms, and each reinforcing mechanism comprises a connecting column, a supporting threaded rod and a supporting sleeve. The bottom ring base, the prefabricated annular cofferdam and the reinforcing mechanism are used in cooperation, the bottom ring base can be fixed in a construction water area through a steel chisel, the prefabricated annular cofferdam is arranged on the outer wall of a supporting plate in a sleeving mode through a dovetail positioning groove, and after a dovetail positioning plate penetrates through the dovetail positioning groove, the prefabricated annular cofferdam is fixed to the outer wall of the supporting plate. A plurality of prefabricated annular cofferdams can be quickly positioned, stacked and spliced together so as to achieve the purpose that the height of the cofferdam can be adjusted according to the height of the water level, and sealing between the stacked prefabricated annular cofferdams can be ensured and surrounding water is prevented from entering the cofferdams in cooperation with use of the upper sealing ring.

Description

Technical Field

[0001] This utility model relates to the field of cofferdam devices, and in particular to a cofferdam device for hydraulic design and construction. Background Technology

[0002] A cofferdam is a temporary retaining structure built in hydraulic engineering projects to construct permanent hydraulic facilities. Its function is to prevent water and soil from entering the construction site, allowing for drainage, excavation of the foundation pit, and construction of the structure. It is primarily used in hydraulic engineering structures and, unless part of a permanent building, is generally dismantled after use. The cofferdam's height is higher than the highest water level that may occur during the construction period.

[0003] In the prior art, a Chinese utility model patent with publication number "CN218990233U" and patent name "A cofferdam device for water conservancy design and construction" discloses a cofferdam device. The patent describes a technical solution such as "including a device body, the device body including a cofferdam component, an anti-corrosion layer, a wear-resistant pad and a base component, the base component is provided on the device body, the top of the base component is connected to the cofferdam component, and the cofferdam component includes a first connecting plate, a second connecting plate, a groove and a protrusion".

[0004] However, in actual use, although the cofferdam device can be easily assembled and disassembled through the cofferdam components, the actual height of the cofferdam device is fixed and difficult to adjust according to the water level. Moreover, the sealing of the device body after being connected by the cofferdam components is poor, and the surrounding water can easily seep into the cofferdam from the gaps at the connection. At the same time, the device body is only spliced ​​together by the cofferdam components through grooves and protrusions, resulting in poor structural stability of the cofferdam after splicing. Once the cofferdam is subjected to excessive external pressure, it will deform or collapse and be damaged. This not only brings inconvenience to the construction of the cofferdam, but also reduces the flexibility of the cofferdam's use and reduces the protective effect of the cofferdam when in use.

[0005] Therefore, in order to solve the above-mentioned technical problems, this utility model proposes a cofferdam device for water conservancy design and construction. Utility Model Content

[0006] The main purpose of this utility model is to provide a cofferdam device for water conservancy design and construction, which can effectively solve the problems in the background technology.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A hydraulic design and construction cofferdam device includes a bottom ring seat and several prefabricated annular cofferdams. The prefabricated annular cofferdams are fixedly connected to the top surface of the bottom ring seat by a reinforcement mechanism, and several reinforcement mechanisms are provided. Each reinforcement mechanism includes a connecting column, a supporting threaded rod, and a supporting sleeve. The connecting column is fixedly connected to the top surface of the inner support reinforcing plate of the bottom ring seat by a second threaded short rod on the bottom surface, and the supporting threaded rod is fixedly connected to the outer wall of the connecting column. The supporting sleeve is movably connected to the supporting threaded rod by a nut inside the sleeve, and the supporting sleeve is fixedly connected to the first threaded short rod on the inner wall of the prefabricated annular cofferdam by a threaded connecting sleeve at its outer end.

[0009] In a preferred embodiment of this invention, a number of steel rods are fixedly installed on the bottom surface of the bottom ring seat in a ring array.

[0010] In a preferred embodiment of this invention, a support reinforcing plate is fixedly installed inside the bottom ring seat, and support plates are fixedly installed on the four sides of the top surface of the bottom ring seat in a circular array. A dovetail positioning plate is fixedly installed on the outer wall of the support plate.

[0011] In a preferred embodiment of this utility model, the inner wall of the prefabricated annular cofferdam is provided with dovetail positioning grooves on all four sides, and the prefabricated annular cofferdam is fitted onto the outside of the support reinforcing plate through the dovetail positioning grooves. The dovetail positioning plate is inserted and installed in the dovetail positioning grooves. A sealing ring is fixedly installed on the bottom surface of the prefabricated annular cofferdam, and a first threaded short rod is also fixedly installed on the inner wall of the prefabricated annular cofferdam between the dovetail positioning grooves.

[0012] In a preferred embodiment of this utility model, a plurality of connecting columns are provided and correspond to the prefabricated annular cofferdam, and a second threaded short rod is fixedly installed at the bottom end of the connecting column. Threaded holes are respectively opened on the top surface of the connecting column and the top surface of the support reinforcing plate.

[0013] In a preferred embodiment of this utility model, a support threaded rod is fixedly installed on each of the four sides of the outer wall of the connecting column, a nut is fixedly installed inside the inner end of the support sleeve, and the nut is threadedly connected to the support threaded rod, and a threaded connecting sleeve is fixedly installed on the outer end of the support sleeve, and the threaded connecting sleeve is threadedly connected to the first threaded short rod.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] In this invention, the bottom ring seat, prefabricated annular cofferdam, and reinforcement mechanism work together. The bottom ring seat can be fixed in the construction water area using steel rods. The prefabricated annular cofferdam is fitted onto the outer wall of the support plate through a dovetail positioning groove. After the dovetail positioning plate passes through the dovetail positioning groove, several prefabricated annular cofferdams can be quickly positioned and stacked together. This allows for adjustment of the cofferdam height according to the water level. The use of sealing rings ensures a seal between the stacked prefabricated annular cofferdams, preventing surrounding water from entering. Finally, a connecting column is installed on the top surface of the support reinforcement plate using a second threaded short rod, depending on the number of prefabricated annular cofferdams. By using the second threaded short rod and the threaded hole together, several connecting columns can be vertically spliced ​​and fixed together. By rotating the support threaded rod outside the support sleeve, the support sleeve can be moved outward along the support threaded rod through the nut until the threaded connecting sleeve is threadedly connected to the first threaded short rod. At the same time, the prefabricated annular cofferdam can be stacked and fixed together. At the same time, it can provide support and reinforcement to the four sides inside the prefabricated annular cofferdam, avoiding the problem of deformation or collapse damage caused by excessive external pressure. This facilitates the construction of the cofferdam, improves the flexibility of the cofferdam's use, and also improves the protection effect of the cofferdam during use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure of the bottom ring seat of this utility model;

[0018] Figure 3 This is a schematic diagram of the overall structure of the prefabricated annular cofferdam of this utility model;

[0019] Figure 4 This is a structural breakdown diagram of the reinforcement mechanism of this utility model.

[0020] In the diagram: 1. Bottom ring seat; 2. Precast annular cofferdam; 3. Reinforcing mechanism; 4. Support reinforcement plate; 5. Steel chisel; 6. Support plate; 7. Dovetail positioning plate; 8. Dovetail positioning groove; 9. Sealing ring; 10. First threaded short rod; 11. Connecting column; 12. Second threaded short rod; 13. Threaded hole; 14. Support threaded rod; 15. Support sleeve; 16. Nut; 17. Threaded connecting sleeve. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] like Figure 1 - Figure 4As shown, a hydraulic design and construction cofferdam device includes a bottom ring seat 1 and several prefabricated annular cofferdams 2. The prefabricated annular cofferdams 2 are fixedly connected to the top surface of the bottom ring seat 1 by a reinforcing mechanism 3. Several reinforcing mechanisms 3 are provided. The reinforcing mechanism 3 includes a connecting column 11, a supporting threaded rod 14, and a supporting sleeve 15. The connecting column 11 is fixedly connected to the top surface of the inner support reinforcing plate 4 of the bottom ring seat 1 by a second threaded short rod 12 on the bottom surface. The supporting threaded rod 14 is fixedly connected to the outer wall of the connecting column 11. The supporting sleeve 15 is movably connected to the supporting threaded rod 14 by a nut 16 inside the sleeve. The supporting sleeve 15 is fixedly connected to the first threaded short rod 10 on the inner wall of the prefabricated annular cofferdam 2 by a threaded connecting sleeve 17 at the outer end.

[0023] like Figure 2 As shown, several steel rods 5 are fixedly installed on the bottom surface of the bottom ring seat 1 in a ring array, and the bottom ring seat 1 can be fixed in the construction water area by means of the steel rods 5;

[0024] like Figure 2 As shown, a bracket reinforcing plate 4 is fixedly installed inside the bottom ring seat 1. The bracket reinforcing plate 4 can improve the support strength of the bottom ring seat 1. Support plates 6 are fixedly installed on the four sides of the top surface of the bottom ring seat 1 in a ring array. A dovetail positioning plate 7 is fixedly installed on the outer wall of the support plate 6. The prefabricated annular cofferdam 2 can be positioned and fitted on the outside of the support plate 6 through the dovetail positioning plate 7 on the outer wall of the support plate 6.

[0025] like Figure 3 As shown, the four sides of the inner wall of the prefabricated annular cofferdam 2 are provided with dovetail positioning grooves 8, and the prefabricated annular cofferdam 2 is fitted onto the outside of the support reinforcing plate 4 through the dovetail positioning grooves 8. The dovetail positioning plate 7 is inserted into the dovetail positioning groove 8. Several prefabricated annular cofferdams 2 can be positioned and fitted onto the outside of the support plate 6 through the dovetail positioning grooves 8 and stacked together. By increasing the number of prefabricated annular cofferdams 2, the purpose of adapting to the water level can be achieved, and the actual height of the cofferdam can be adjusted. A sealing ring 9 is fixedly installed on the bottom surface of the prefabricated annular cofferdam 2. The sealing ring 9 can improve the sealing performance of the prefabricated annular cofferdam 2 after stacking. A first threaded short rod 10 is also fixedly installed on the inner wall of the prefabricated annular cofferdam 2 between the dovetail positioning grooves 8. The first threaded short rod 10 is used to connect with the threaded connecting sleeve 17.

[0026] like Figure 4 As shown, several connecting columns 11 are provided and correspond to the prefabricated annular cofferdam 2. A second threaded short rod 12 is fixedly installed at the bottom end of the connecting column 11. Threaded holes 13 are respectively opened on the top surface of the connecting column 11 and the top surface of the support reinforcing plate 4. The second threaded short rod 12 at the bottom end of one connecting column 11 is threadedly connected to the threaded hole 13 at the top end of another connecting column 11, so that several connecting columns 11 can be spliced ​​and fixed together.

[0027] like Figure 4 As shown, support threaded rods 14 are fixedly installed on the four sides of the outer wall of the connecting column 11. Nuts 16 are fixedly installed inside the inner end of the support sleeve 15, and the nuts 16 are threadedly connected to the support threaded rods 14. Threaded connecting sleeves 17 are fixedly installed on the outer end of the support sleeve 15, and the threaded connecting sleeves 17 are threadedly connected to the first threaded short rod 10. Rotating the support sleeve 15 causes it to move outward along the support threaded rods 14 through the nuts 16 until the threaded connecting sleeves 17 are threadedly connected to the first threaded short rod 10. Through the support sleeve 15, support threaded rods 14, and connecting column 11, the inner wall of the prefabricated annular cofferdam 2 can be supported and reinforced on all four sides, preventing the cofferdam from collapsing and being damaged due to deformation caused by excessive external pressure, thereby improving the stability and protection effect of the cofferdam.

[0028] The specific operating principles of the bottom ring seat 1, the prefabricated annular cofferdam 2, and the reinforcement mechanism 3 are as follows:

[0029] During construction, the bottom ring seat 1 can be fixed in the construction water area using steel rods 5. Then, the prefabricated annular cofferdam 2 is fitted onto the outside of the support plates 6 installed on the four sides of the top surface of the bottom ring seat 1. During fitting, the dovetail positioning grooves 8 on the four sides of the inner wall of the prefabricated annular cofferdam 2 correspond to the dovetail positioning plates 7 installed on the outer wall of the support plate 6, allowing the prefabricated annular cofferdam 2 to be fitted onto the outside of the support plate 6, with the dovetail positioning plates 7 passing through the dovetail positioning grooves 8. Then, according to the water level, several prefabricated annular cofferdams 2 are sequentially positioned and fitted onto the outside of the support plate 6, allowing several prefabricated annular cofferdams 2 to be stacked together. This is achieved by adding prefabricated... The number of annular cofferdams 2 is adjusted to adapt to different water levels, allowing for flexible use and improved usability. The prefabricated annular cofferdams 2, stacked together, are sealed by sealing rings 9 installed on their bottom surfaces, preventing water from seeping into the cofferdam. The support reinforcement plate 4 installed inside the bottom ring seat 1 enhances the strength of the bottom ring seat 1 when used as a base. Then, the second threaded short rod 12 installed at the bottom end of the connecting column 11 is threadedly connected to the threaded hole 13 on the top surface of the support reinforcement plate 4. Based on the number of prefabricated annular cofferdams 2, several corresponding connecting columns 11 are connected and fixed together through the second threaded short rod 12 at the bottom and the threaded hole 13 on the top surface. Connecting the second threaded short rod 12 at the bottom of one connecting column 11 to the threaded hole 13 at the top of the connecting column 11 achieves the connection and fixation between the connecting columns 11. Finally, manually rotate the support sleeves 15 outside the four supporting threaded rods 14 on the outer wall of the connecting column 11 in sequence. The support sleeves 15 will rotate and move outward along the threaded part of the supporting threaded rod 14 through the nut 16 installed in the inner end of the sleeve. Continuously rotating the support... The threaded connecting sleeve 17 installed on the outer end of the sleeve 15 and the first threaded short rod 10 installed on the four sides of the inner wall of the prefabricated annular cofferdam 2 are threaded together, so that the prefabricated annular cofferdam 2 can be connected and fixed. The support sleeve 15, the support threaded rod 14 and the connecting column 11 can support and reinforce the four sides of the inner wall of the prefabricated annular cofferdam 2 inside the prefabricated annular cofferdam 2, and prevent the cofferdam from collapsing and being damaged due to deformation caused by excessive external pressure. This achieves the purpose of improving the stability and protection effect of the cofferdam. The overall structure is simple and easy to carry out construction quickly.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] 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.

Claims

1. A hydraulic design and construction cofferdam device, comprising a bottom ring seat (1) and several prefabricated annular cofferdams (2), characterized in that: The prefabricated annular cofferdam (2) is fixedly connected to the top surface of the bottom ring seat (1) by a reinforcement mechanism (3), and there are several reinforcement mechanisms (3). The reinforcement mechanism (3) includes a connecting column (11), a supporting threaded rod (14) and a supporting sleeve (15). The connecting column (11) is fixedly connected to the top surface of the inner support reinforcing plate (4) of the bottom ring seat (1) by a second threaded short rod (12) on the bottom surface, and the supporting threaded rod (14) is fixedly connected to the outer wall of the connecting column (11). The supporting sleeve (15) is movably connected to the supporting threaded rod (14) by a nut (16) inside the sleeve, and the supporting sleeve (15) is fixedly connected to the first threaded short rod (10) on the inner wall of the prefabricated annular cofferdam (2) by a threaded connecting sleeve (17) on the outer end.

2. A cofferdam device for hydraulic design and construction according to claim 1, characterized in that: The bottom surface of the bottom ring seat (1) is fixedly installed with several steel rods (5) in a ring array.

3. A cofferdam device for hydraulic design and construction according to claim 2, characterized in that: A bracket reinforcing plate (4) is fixedly installed inside the bottom ring seat (1), and support plates (6) are fixedly installed on the four sides of the top surface of the bottom ring seat (1) in a ring array. A dovetail positioning plate (7) is fixedly installed on the outer side wall of the support plate (6).

4. A cofferdam device for hydraulic design and construction according to claim 3, characterized in that: The prefabricated annular cofferdam (2) has dovetail positioning grooves (8) on its four sides. The prefabricated annular cofferdam (2) is fitted onto the outside of the support reinforcement plate (4) through the dovetail positioning grooves (8). The dovetail positioning plate (7) is inserted into the dovetail positioning groove (8). A sealing ring (9) is fixedly installed on the bottom surface of the prefabricated annular cofferdam (2). A first threaded short rod (10) is also fixedly installed on the inner wall of the prefabricated annular cofferdam (2) between the dovetail positioning grooves (8).

5. A cofferdam device for hydraulic design and construction according to claim 4, characterized in that: The connecting column (11) is provided in several ways and corresponds to the prefabricated annular cofferdam (2). The bottom end of the connecting column (11) is fixedly installed with a second threaded short rod (12). The top surface of the connecting column (11) and the top surface of the support reinforcing plate (4) are respectively provided with threaded holes (13).

6. A cofferdam device for hydraulic design and construction according to claim 5, characterized in that: Support threaded rods (14) are fixedly installed on the four sides of the outer wall of the connecting column (11). Nuts (16) are fixedly installed inside the inner end of the support sleeve (15), and the nuts (16) are threadedly connected to the support threaded rods (14). Threaded connecting sleeves (17) are fixedly installed on the outer end of the support sleeve (15), and the threaded connecting sleeves (17) are threadedly connected to the first threaded short rod (10).

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