A cofferdam installation device facilitating construction
By using a support frame and caisson structure to quickly and accurately position the cofferdam insert plate, the problems of positional deviation and insufficient sealing in existing cofferdam construction are solved, achieving efficient and convenient cofferdam installation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANJIN WATER ENG CO LTD
- Filing Date
- 2025-05-28
- Publication Date
- 2026-07-10
AI Technical Summary
The existing cofferdams have been affected by water flow during construction, resulting in misalignment of the installation position, insufficient sealing, and a cumbersome installation process.
The structure adopts a support frame and caisson. The support frame is a triangular structural component with positioning components and pins. The pins at the bottom of the support frame are inserted into the riverbed, and the positioning components guide the cofferdam insert plates to be positioned quickly and accurately, forming the sidewall of the cofferdam.
It improved construction efficiency and precision, ensuring rapid and accurate positioning of the cofferdam insert plates, and enhancing the sealing performance and ease of construction of the cofferdam.
Smart Images

Figure CN224478471U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of cofferdam construction, and in particular relates to a cofferdam installation device that facilitates construction. Background Technology
[0002] In water conservancy construction projects, it is often necessary to modify or construct parts of the riverbed and river channel that are below the water surface. In order to remove the impact of water on workers and equipment, this is currently achieved by using cofferdams or diving bells. Diving bells are suitable for small-area construction, while cofferdams are suitable for large-area construction.
[0003] During the construction of existing cofferdams, equipment is used to insert the cofferdam walls into the bottom of the riverbed. The current cofferdam walls are formed by splicing multiple corrugated plates. During the process of inserting the cofferdam walls into the bottom of the riverbed, the installation position often shifts due to the influence of water flow, resulting in insufficient sealing of the cofferdam walls. Furthermore, the installation process is cumbersome and requires frequent adjustments to the position of the installation equipment. Utility Model Content
[0004] In view of this, the present invention aims to provide a cofferdam installation device that is easy to construct, in order to solve at least one of the above-mentioned technical problems.
[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:
[0006] A cofferdam installation device that facilitates construction includes:
[0007] The support frame is a structural component with a triangular side projection. The support frame is equipped with positioning components for positioning the cofferdam insert plate. Multiple support frames are placed on the riverbed to form an installation structure for installing the cofferdam insert plate.
[0008] A caisson, which is fixedly connected to a support frame;
[0009] Cofferdam inserts, one end of which is inserted into the riverbed, and multiple cofferdam inserts form the sidewall of the cofferdam.
[0010] Furthermore, the support frame includes:
[0011] A vertical frame, the two ends of which are connected to a horizontal frame and a diagonal frame respectively, and the side of the vertical frame away from the diagonal frame is connected to a positioning component;
[0012] A horizontal frame, the side of which is furthest from the vertical frame, is connected to a diagonal frame;
[0013] The inclined frame is a mesh structure, and a pin is fixed at one end of the inclined frame near the riverbed, the pin being inserted into the riverbed.
[0014] Furthermore, the caisson is fixedly connected to the end face of the inclined frame near the riverbed.
[0015] Furthermore, the positioning component has multiple positioning grooves corresponding to the cofferdam insert plate. The cofferdam insert plate includes an inner insert plate and an outer insert plate. The inner insert plate is located inside the positioning groove, and the outer insert plate is located outside the positioning groove.
[0016] Furthermore, the cofferdam insert plate is a Z-shaped structural component, with the inner sidewall of the outer insert plate pressing tightly against the inner sidewall of the inner insert plate. The outer insert plate and the inner insert plate are alternately arranged on the outside of the support frame to form a cofferdam sidewall with a corrugated horizontal cross-section.
[0017] Furthermore, the width of the positioning groove is the same as the outer width of the cofferdam insert plate, and the distance between two adjacent positioning grooves is the same as the inner width of the cofferdam insert plate.
[0018] Furthermore, both sides of the support frame are provided with impact blocks, and the impact blocks on two adjacent support frames are pressed together.
[0019] Furthermore, multiple positioning elements are provided, and the projections of multiple positioning elements located on the same support frame on the horizontal plane overlap with each other.
[0020] Compared with existing technologies, the cofferdam installation device of this utility model, which is easy to construct, has the following advantages:
[0021] The support frame and caisson enable rapid positioning of the cofferdam sidewall construction location. Guided by the positioning components, the cofferdam insert plate can be quickly and accurately inserted into the designated position, improving construction efficiency and precision. Attached Figure Description
[0022] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:
[0023] Figure 1 This is a partial structural diagram of the cofferdam installation device described in this embodiment of the present invention during the construction process;
[0024] Figure 2 This is a schematic diagram of the support frame structure according to an embodiment of the present utility model.
[0025] Explanation of reference numerals in the attached figures:
[0026] 1. Support frame; 101. Vertical frame; 102. Horizontal frame; 103. Diagonal frame; 104. Pin; 105. Impact block; 2. Caisson; 3. Cofferdam insert plate; 4. Positioning component; 401. Positioning groove. Detailed Implementation
[0027] It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this utility model can be combined with each other.
[0028] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of 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.
[0030] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0031] A cofferdam installation device that facilitates construction includes:
[0032] Support frame 1, the support frame 1 is a structural component with a triangular side projection, and the support frame 1 is provided with positioning component 4 for positioning the cofferdam insert 3. Multiple support frames 1 are placed on the riverbed to form an installation structure for installing the cofferdam insert 3.
[0033] Caisson 2, which is fixedly connected to support frame 1;
[0034] Cofferdam insert 3, one end of which is inserted into the riverbed, and multiple cofferdam inserts 3 form the sidewall of the cofferdam.
[0035] The support frame 1 includes:
[0036] The vertical frame 101 is connected to the horizontal frame 102 and the diagonal frame 103 at its two ends, respectively, and the side of the vertical frame 101 away from the diagonal frame 103 is connected to the positioning member 4.
[0037] A horizontal frame 102, the side of which is away from the vertical frame 101 is connected to a diagonal frame 103;
[0038] The inclined frame 103 is a mesh structure. A pin 104 is fixed at one end of the inclined frame 103 near the riverbed and is inserted into the riverbed.
[0039] The caisson 2 is fixedly connected to the end face of the inclined frame 103 near the riverbed.
[0040] The positioning component 4 has multiple positioning grooves 401 corresponding to the cofferdam insert plate 3. The cofferdam insert plate 3 includes an inner insert plate and an outer insert plate. The inner insert plate is located inside the positioning groove 401, and the outer insert plate is located outside the positioning groove 401.
[0041] The cofferdam insert plate 3 is a Z-shaped structural component. The inner side wall of the outer insert plate is pressed against the inner side wall of the inner insert plate. The outer insert plate and the inner insert plate are alternately arranged on the outside of the support frame 1 to form a cofferdam side wall with a corrugated horizontal cross section.
[0042] In some embodiments, the cofferdam insert 3 is a U-shaped structural component.
[0043] The width of the positioning groove 401 is the same as the outer width of the cofferdam insert 3, and the distance between two adjacent positioning grooves 401 is the same as the inner width of the cofferdam insert 3.
[0044] Both sides of the support frame 1 are provided with impact blocks 105, and the impact blocks 105 on two adjacent support frames 1 are pressed together.
[0045] In some embodiments, the impact block 105 is disposed on the support frame 1 at other positions except the inclined surface. When an arc-shaped cofferdam sidewall is required, the impact block 105 is still pressed tightly, but the bottom of the inclined surface of the support frame 1 moves inward. At this time, a certain angle is formed between two adjacent support frames 1, which in turn causes the cofferdam insert plate 3 to form a certain arc during the installation process.
[0046] Multiple positioning elements 4 are provided, and the projections of multiple positioning elements 4 located on the same support frame 1 on the horizontal plane overlap with each other.
[0047] Work process:
[0048] Construction workers moved the support frame 1 to the designated position by a transport vessel, put heavy objects into the caisson 2 to make the support frame 1 descend quickly, put the support frame 1 into the water and sank it to the designated position. With the caisson 2 having little impact, the pin 104 at the bottom of the support frame 1 was inserted into the riverbed, completing the installation and positioning of the support frame 1.
[0049] After all support frames 1 are installed, the construction workers insert the inner plate of the cofferdam insert plate 3 into the riverbed along the positioning groove 401. Then, the outer plate of the cofferdam insert plate 3 is placed between two adjacent inner plates. After all the cofferdam insert plates 3 are inserted, the cofferdam sidewall is assembled. At this time, the water inside the cofferdam is pumped out and construction begins.
[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.
[0051] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A cofferdam installation device that facilitates construction, characterized in that, include: Support frame (1), the support frame (1) is a structural component with a triangular side projection, and the support frame (1) is provided with a positioning component (4) for positioning the cofferdam insert plate (3). Multiple support frames (1) are placed on the riverbed to form an installation structure for installing the cofferdam insert plate (3). A caisson (2) is fixedly connected to a support frame (1); Cofferdam insert plate (3), one end of which is inserted into the riverbed, and multiple cofferdam insert plates (3) form the sidewall of the cofferdam.
2. The cofferdam installation device for easy construction according to claim 1, characterized in that, The support frame (1) includes: A vertical frame (101) is connected at both ends to a horizontal frame (102) and a diagonal frame (103) respectively. The side of the vertical frame (101) away from the diagonal frame (103) is connected to a positioning member (4). A horizontal frame (102), the side of which is away from the vertical frame (101) is connected to a diagonal frame (103); The inclined frame (103) is a mesh structure. A pin (104) is fixed at one end of the inclined frame (103) near the riverbed and is inserted into the riverbed.
3. The cofferdam installation device for easy construction according to claim 2, characterized in that, The caisson (2) is fixedly connected to the end face of the inclined frame (103) near the riverbed.
4. The cofferdam installation device for easy construction according to claim 1, characterized in that, The positioning component (4) has multiple positioning grooves (401) corresponding to the cofferdam insert plate (3). The cofferdam insert plate (3) includes an inner insert plate and an outer insert plate. The inner insert plate is located inside the positioning groove (401), and the outer insert plate is located outside the positioning groove (401).
5. The cofferdam installation device for easy construction according to claim 4, characterized in that, The cofferdam insert plate (3) is a Z-shaped structural component. The inner side wall of the outer insert plate is pressed against the inner side wall of the inner insert plate. The outer insert plate and the inner insert plate are alternately arranged on the outside of the support frame (1) to form a cofferdam side wall with a corrugated horizontal cross section.
6. The cofferdam installation device for easy construction according to claim 4, characterized in that, The width of the positioning groove (401) is the same as the outer width of the cofferdam insert plate (3), and the distance between two adjacent positioning grooves (401) is the same as the inner width of the cofferdam insert plate (3).
7. The cofferdam installation device for easy construction according to claim 1, characterized in that, Both sides of the support frame (1) are provided with impact blocks (105), and the impact blocks (105) on two adjacent support frames (1) are pressed together.
8. A cofferdam installation device for easy construction according to claim 1, characterized in that, The positioning element (4) is provided in multiple ways, and the projections of the multiple positioning elements (4) located on the same support frame (1) on the horizontal plane overlap with each other.