Fabricated cofferdam for water conservancy project of small river channel

By using modularly designed prefabricated cofferdams, which utilize rectangular frames, water-retaining plates, and TC-type locking buckles for connection, the high construction difficulty and environmental pollution problems of small river channel construction have been solved, achieving a low-cost and environmentally friendly construction solution.

CN223824210UActive Publication Date: 2026-01-23CHINA CONSTRUCTION POWER & ENVIRONMENT ENGINEERING CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202520134455.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-01-21
Publication Date
2026-01-23
Estimated Expiration
2035-01-21

AI Technical Summary

Technical Problem

In the construction of small river channels, conventional cofferdam construction is difficult and costly, and the materials cannot be reused, which can easily cause environmental pollution.

Method used

The prefabricated cofferdam is composed of cofferdam units, which are modularly connected using rectangular frames, water-blocking plates, positioning pipes and TC-type locks, and fixed by small machinery. The materials are recyclable.

Benefits of technology

It achieves simple construction, low cost, recyclable materials, avoids environmental pollution, and occupies a small area.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN223824210U_ABST
    Figure CN223824210U_ABST
Patent Text Reader

Abstract

The utility model discloses an assembly type cofferdam for a small river channel water conservancy project, which is formed by assembling cofferdam units, and each cofferdam unit comprises a rectangular frame and a water baffle; at least two positioning pipes used for nailing piles are arranged on the downstream face of the rectangular frame in parallel in the vertical direction. A positioning groove for inserting the water baffle is formed in the upstream face of the rectangular frame; t-C type lock catches are arranged on the two sides of the rectangular frame. Every two adjacent cofferdam units are assembled through a T-C type lock catch, and a rubber waterstop is installed at the joint of every two adjacent cofferdam units. According to the assembly type cofferdam, the cofferdam units are designed in a modularized mode and easy to manufacture, all the modularized cofferdam units are connected and fixed through the T-C type lock catches, when the assembly type cofferdam is used, a rectangular frame is fixed through timber piles through small machines, the length of the cofferdam is determined by the number of modules and does not need to be customized, and materials of the cofferdam can be completely recycled after the cofferdam is used; the problem of environmental pollution is avoided, and the device is small in occupied area and convenient to store after being recycled.
Need to check novelty before this filing date? Find Prior Art

Description

TECHNICAL FIELD

[0001] The utility model is used for the closure, water isolation and the like of small river, and specifically relates to an assembled cofferdam. BACKGROUND

[0002] With the development of society, people's desire for green water and mountains is increasing, and environmental governance projects are gradually increasing. The management of large rivers and rivers has outstanding achievements, so the environmental improvement project gradually turns to small rivers. Small river construction is different from large river construction. Small rivers correspond to small engineering construction sites, and large machinery is not convenient or cannot enter the site. The use of conventional cofferdams is difficult to construct and has high construction cost. Construction materials cannot be recycled, and construction waste can easily pollute the environment and is difficult to clean up and transport out. SUMMARY

[0003] The utility model solves the technical problem to provide an assembled cofferdam for small river construction.

[0004] To solve the above technical problems, the utility model adopts the technical scheme that:

[0005] An assembled cofferdam for small river water conservancy projects is assembled by cofferdam units. The cofferdam unit includes a rectangular frame and a water baffle. At least two positioning pipes for nailing piles are arranged on the backwater surface of the rectangular frame in the vertical direction. A positioning groove for inserting the water baffle is arranged on the water surface of the rectangular frame, and the water baffle is inserted into the positioning groove. T-C type lock buckles are arranged on both sides of the rectangular frame. One side is the T type of the T-C type lock buckle, and the other side is the C type of the T-C type lock buckle. Adjacent two cofferdam units are assembled by T-C type lock buckles, and rubber water stop belts are installed at the connection of adjacent two cofferdam units.

[0006] The rectangular frame is welded by two angle steels in the horizontal direction and two channel steels in the vertical direction. The water baffle is inserted into the slot of the two channel steels.

[0007] Two opposite steel bars are arranged in the diagonal direction of the rectangular frame.

[0008] The positioning pipe is a square tube.

[0009] The water baffle is a steel plate. Beneficial effects

[0010] The assembled cofferdam of the utility model is modularized, simple to manufacture, and each modularized cofferdam unit is connected and fixed by T-C type lock buckles. When used, only the rectangular frame needs to be fixed by small machinery using wooden piles. The length of the cofferdam is determined by the number of modules and does not need to be customized. After use, the cofferdam materials can be completely recycled, and there is no environmental pollution problem. After recycling, the device occupies a small area and is easy to store. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 is a structural schematic diagram of the utility model.

[0012] Figure 2 is a structural schematic diagram of the cofferdam of the utility model;

[0013] Wherein: 1, rectangular frame; 11, angle steel; 12, channel steel; 13, reinforcing steel; 2, positioning pipe; 3, T-C type lock; 4, water baffle; 5, wooden pile; 6, rubber waterstop. DETAILED DESCRIPTION

[0014] The utility model will be described in detail below with reference to the drawings:

[0015] As Figure 1 The utility model discloses a kind of assembly type cofferdams for small river water conservancy projects, which is assembled by cofferdam unit, and the cofferdam unit includes rectangular frame 1 and water baffle 4;At least two positioning pipes 2 for nailing pile are arranged in vertical direction on the backwater surface of rectangular frame 1;Positioning groove for inserting water baffle 4 is arranged on the water surface of rectangular frame.T-C type lock 3 is arranged on the both sides of rectangular frame 1, one side is T type of T-C type lock, and the other side is C type of T-C type lock;Adjacent two cofferdam units are assembled by T-C type lock, and rubber waterstop 6 is installed at the connection of adjacent two cofferdam units.

[0016] In one embodiment, positioning pipe 2 is two, and is distributed at three equal parts.

[0017] In one embodiment, referring to Figure 2 Rectangular frame 1 is welded by two angle steels 11 in horizontal direction and two channel steels 12 in vertical direction;Water baffle 4 is inserted into the slot of two channel steels 12.

[0018] In one embodiment, in order to increase the strength of rectangular frame 1, two opposite reinforcing steels 13 are arranged in diagonal direction of rectangular frame 1.

[0019] In one embodiment, positioning pipe 2 is square tube.

[0020] In one embodiment, water baffle 4 is steel plate.

[0021] Usage: wooden pile is used to nail into the ground through square tube to fix the first rectangular frame 1, the second rectangular frame 2 is connected with the previous rectangular frame by T-C lock and fixed by wooden pile through the square tube of the second rectangular frame 1, and so on, finally, steel plate is inserted into positioning groove and pressed to the bottom.

Claims

1. A prefabricated cofferdam for small-scale river water conservancy projects, assembled from cofferdam units, characterized in that, The cofferdam unit includes a rectangular frame and a water-retaining plate; at least two positioning tubes for driving piles are arranged parallel to each other in the vertical direction on the back side of the rectangular frame; a positioning groove for inserting the water-retaining plate is provided on the front side of the rectangular frame, and the water-retaining plate is inserted into the positioning groove; TC-type locks are provided on both sides of the rectangular frame, one side is a T-type TC-type lock and the other side is a C-type TC-type lock; adjacent cofferdam units are assembled by TC-type locks, and rubber waterstops are installed at the connection between adjacent cofferdam units.

2. The prefabricated cofferdam for small-scale river water conservancy projects according to claim 1, characterized in that, The rectangular frame is welded together from two horizontal angle steels and two vertical channel steels; the water baffle is inserted into the slots of the two channel steels.

3. The prefabricated cofferdam for small-scale river water conservancy projects according to claim 1, characterized in that, Two tie bars are provided diagonally in the rectangular frame.

4. The prefabricated cofferdam for small-scale river water conservancy projects according to claim 1, characterized in that, The positioning tube is a square tube.

5. The prefabricated cofferdam for small-scale river water conservancy projects according to claim 1, characterized in that, The water baffle is made of steel plate.