A cofferdam structure for hydraulic engineering construction of water conservancy and hydropower engineering
The design of detachable connecting plates and slider structure solves the problem of difficult transportation of traditional cofferdams in remote mountainous areas, enabling rapid assembly and fixation, and ensuring construction progress and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUJIAN LVLIN MUNICIPAL GARDEN CO LTD
- Filing Date
- 2025-06-24
- Publication Date
- 2026-07-14
AI Technical Summary
Traditional cofferdam structures are difficult to transport quickly and efficiently in remote mountainous areas and complex terrain, leading to delays in construction progress and extended project construction periods.
It adopts a detachable connecting plate and slider structure, and can be quickly assembled by inserting the slider into the groove. The piercing head at the lower end of the connecting plate is inserted into the soil layer for fixation, which enhances the impact resistance.
It improves the efficiency of cofferdam transportation and installation, ensures that the construction progress is not affected, has a good fixing effect, and is highly safe.
Smart Images

Figure CN224495174U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of cofferdam technology, specifically relating to a cofferdam structure for hydraulic engineering construction in water conservancy and hydropower projects. Background Technology
[0002] In the construction of water conservancy and hydropower projects, cofferdams, as temporary water-retaining structures, play a crucial role in the smooth progress of hydraulic engineering construction. However, as water conservancy and hydropower projects gradually expand into remote mountainous areas and complex terrain regions, the transportation disadvantages of traditional cofferdam structures have become increasingly apparent. These areas have narrow roads and complex road conditions, making it difficult for large transport equipment to pass. Traditional cofferdam structures cannot be transported to the construction site quickly and efficiently, leading to delays in construction progress and increasing the project's construction cycle and the investment of manpower and resources. Utility Model Content
[0003] To address the aforementioned shortcomings in the existing technology, this utility model provides a cofferdam structure for hydraulic engineering construction in water conservancy and hydropower projects, thereby solving the problems mentioned in the background technology.
[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:
[0005] A cofferdam structure for hydraulic engineering construction in water conservancy and hydropower projects is characterized by comprising a connecting plate and a first slider, wherein the inner side of the connecting plate is provided with a first sliding groove, the first slider is slidably connected to the first sliding groove, the inner side of the connecting plate is provided with a limiting groove, and a limiting block is connected to the outer side of the connecting plate.
[0006] Preferably, a connecting block is connected to the lower end of the connecting plate, and a puncture part is provided on the inner side of the connecting block.
[0007] Preferably, the piercing part includes a piercing head, and a sliding plate is slidably connected to the inner side of the connecting block, the sliding plate being connected to the piercing head.
[0008] Preferably, the upper end of the sliding plate is provided with a mounting groove, and a spring is provided inside the mounting groove. The two ends of the spring are respectively connected to the connecting block and the sliding plate.
[0009] Preferably, the connecting block has a third sliding groove on its inner side, and a movable column is slidably connected to the inner side of the third sliding groove.
[0010] Preferably, the movable column is connected to a second slider, and the outer side of the third slide groove is connected to a second slide groove, wherein the second slider is slidably connected to the second slide groove.
[0011] Compared with the prior art, this utility model has the following advantages:
[0012] 1. By setting detachable connecting plates and first sliders, when transportation to the site is required, each connecting plate and first slider can be disassembled and loaded onto a vehicle for transportation. After arriving at the site, the limiting block of one connecting plate is aligned with the limiting groove of another connecting plate, and then the first slider is inserted into the first sliding groove between the two connecting plates, thereby assembling the connecting plates to form a complete cofferdam, which greatly improves transportation and installation efficiency and does not delay the construction progress.
[0013] 2. By setting a connecting block at the lower end of the connecting plate, when the movable column inside the connecting block moves downward and encounters a hard layer, the pressure between the hard layer and the upper machine will cause the movable column to slide inward and push the fixed plate outward. The piercing head at the front end of the fixed plate is inserted into the soil layer to play a fixing role. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0015] Figure 2 A three-dimensional structural diagram of a single connecting plate provided by this utility model;
[0016] Figure 3 This is a frontal sectional view of the connecting block provided by this utility model;
[0017] The reference numerals in the accompanying drawings include: connecting plate 1, connecting block 2, first slider 3, first slide groove 4, limiting groove 5, limiting block 6, movable column 7, second slider 8, second slide groove 9, third slide groove 10, piercing head 11, spring 12, mounting groove 13, and sliding plate 14. Detailed Implementation
[0018] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.
[0019] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.
[0020] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.
[0021] In the description of this utility model, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating the connection relationship between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0022] Example 1:
[0023] like Figure 1-3 The invention relates to a cofferdam structure for hydraulic engineering construction in water conservancy and hydropower projects. The structure includes several connecting plates 1 and several first sliders 3. A first groove 4 is formed at the connection point of two connecting plates 1, and the first sliders 3 are slidably connected to the first groove 4. One of two adjacent connecting plates 1 has a limiting groove 5 on its inner side and a limiting block 6 connected to its outer side. The other plate is connected to a limiting groove 5 and a limiting block 6 that are compatible with the first connecting plate 1, allowing the two connecting plates 1 to be connected together via the limiting block 6 and the limiting groove 5. Then, the first sliders 3 are inserted to enhance the overall structure. A connecting block 2 is fixedly connected to the lower end of each connecting plate 1. A third groove 10 is formed on the inner side of the connecting block 2, and the outer side of the third groove 10 is connected to... A second sliding groove 9 is connected, and a movable column 7 is slidably connected to the inner side of the second sliding groove 9. A second slider 8 is fixedly connected to the movable column 7. The second slider 8 is slidably connected to the second sliding groove 9. Two sliding plates 14 are symmetrically provided on the upper end of the movable column 7. The sliding plates 14 are slidably connected to the connecting block 2. An installation groove 13 is opened on one side of the movable plate. A spring 12 is provided inside the installation groove 13. The two ends of the spring 12 are respectively connected to the connecting block 2 and the sliding plate 14. One end of the sliding plate 14 is located inside the third sliding groove 10 and is hemispherical. When the movable column 7 moves upward, the movable column 7 is squeezed outward, causing the movable column 7 to move outward. As a result, the piercing head 11 at the front end of the sliding plate 14 pierces into the soil layer, increasing the friction with the soil layer.
[0024] Working principle:
[0025] Align and install the connecting plates 1 to form a cofferdam structure. Then, move it underwater under mechanical action. When the connecting block 2 touches the hard bottom layer, it will cause the movable column 7 to move upward and squeeze the sliding plates 14 on both sides. After being pressured, the sliding plates 14 move outward and the spring 12 inside the upper mounting groove 13 is compressed. The piercing head 11 at the front end of the sliding plate 14 pierces the soil layer, increasing the friction with the soil layer, thereby increasing the impact resistance of the entire structure. When the cofferdam is lifted upward, the piercing head 11 retracts under the action of the spring 12 to ensure the safety of external personnel.
[0026] The above are merely embodiments of this utility model. The circuits, electronic components, and modules involved are all prior art, fully achievable by those skilled in the art, and require no further explanation. The content protected by this application does not involve improvements to the software or methods. Commonly known structures and characteristics in the solution are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field to which this utility model pertains prior to the application date or priority date, are able to access all existing technologies in that field, and possess the ability to apply conventional experimental methods prior to that date. Those skilled in the art can, under the guidance of this application, improve and implement this solution in conjunction with their own capabilities. Some typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent.
Claims
1. A cofferdam structure for hydraulic engineering construction in water conservancy and hydropower projects, characterized in that: It includes a connecting plate (1) and a first slider (3). The inner side of the connecting plate (1) is provided with a first sliding groove (4). The first slider (3) is slidably connected to the first sliding groove (4). The inner side of the connecting plate (1) is provided with a limiting groove (5). The outer side of the connecting plate (1) is connected with a limiting block (6).
2. The cofferdam structure for hydraulic engineering construction in water conservancy and hydropower projects as described in claim 1, characterized in that: The lower end of the connecting plate (1) is connected to a connecting block (2), and the inner side of the connecting block (2) is provided with a puncture part.
3. The cofferdam structure for hydraulic engineering construction in water conservancy and hydropower projects as described in claim 2, characterized in that: The piercing part includes a piercing head (11), and a sliding plate (14) is slidably connected to the inner side of the connecting block (2), and the sliding plate (14) is connected to the piercing head (11).
4. The cofferdam structure for hydraulic engineering construction in water conservancy and hydropower projects as described in claim 3, characterized in that: The upper end of the sliding plate (14) is provided with an installation groove (13), and the inner side of the installation groove (13) is provided with a spring (12). The two ends of the spring (12) are respectively connected to the connecting block (2) and the sliding plate (14).
5. A cofferdam structure for hydraulic engineering construction in water conservancy and hydropower projects as described in claim 4, characterized in that: The connecting block (2) has a third sliding groove (10) on its inner side, and a movable column (7) is slidably connected to the inner side of the third sliding groove (10).
6. The cofferdam structure for hydraulic engineering construction in water conservancy and hydropower projects as described in claim 5, characterized in that: The movable column (7) is connected to the second slider (8), and the outer side of the third slide groove (10) is connected to the second slide groove (9). The second slider (8) and the second slide groove (9) are slidably connected.