Cofferdam device for hydraulic engineering construction

By combining the design of the cofferdam baffle and the outer and inner protective corner plates and the sliding clamping plate structure, the leakage problem at the connection of the cofferdam in water conservancy construction was solved, achieving the effects of sealing and convenient disassembly and assembly.

CN224227830UActive Publication Date: 2026-05-12HEILONGJIANG XINYUANTAI WATER CONSERVANCY SURVEY & DESIGN CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HEILONGJIANG XINYUANTAI WATER CONSERVANCY SURVEY & DESIGN CO LTD
Filing Date
2025-05-29
Publication Date
2026-05-12

AI Technical Summary

Technical Problem

Existing cofferdam devices for water conservancy construction are prone to leakage at the connection points and lack effective reinforcement structures, leading to leakage problems during water conservancy project construction.

Method used

The design incorporates components such as cofferdam baffles, outer protective corner plates, inner protective corner plates, L-shaped clamps, positioning rods, and sliding plates. The positioning rods and inner and outer protective corner plates work together to ensure the sealing of the connection, while the sliding plates and spring structure enable easy assembly and disassembly.

Benefits of technology

It effectively prevents water leakage at the connection of cofferdams during water conservancy construction, ensures that the baffle does not deform or crack under water pressure, and is easy to assemble and disassemble, thus improving the safety and efficiency of construction.

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Abstract

A cofferdam device for hydraulic engineering construction comprises cofferdam baffles, outer protection corner plates, positioning insertion rods, inner protection corner plates, L-shaped clamping plates, middle fixing sleeves, vertical connecting plates, sliding clamping plates, guide sliding rods, springs and vertical connecting rods, the outer side faces of the cofferdam baffles are attached to the outer protection corner plates, and the group of cofferdam baffles are symmetrically arranged on the inner sides of the outer protection corner plates; every two of the four cofferdam baffles abut against each other to form a quadrangle, the four outer protection corner plates are distributed at the four corners of the quadrangle, two rows of positioning insertion rods are arranged on the side faces of the outer protection corner plates, the cofferdam baffles are provided with a plurality of baffle insertion holes, and the positioning insertion rods are matched with the baffle insertion holes and penetrate through the baffle insertion holes. The outer side faces of the inner protection corner plates are attached to the inner side faces of the cofferdam baffles, and the four inner protection corner plates are distributed at the four corners of the quadrangle.
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Description

Technical Field

[0001] This utility model relates to the field of water conservancy engineering construction, and in particular to a cofferdam device for water conservancy engineering construction. Background Technology

[0002] An existing patent (publication number: CN117513378A) discloses a cofferdam device for hydraulic construction, including a wall. A connecting groove is formed on the side wall of the wall, and a connecting block is provided on the side wall of the connecting groove. A fixing block is provided next to the wall, and the fixing block has a connecting groove. A buffer element is provided on the side wall of the wall. A limiting box for use with the buffer element is fixedly connected to the fixing block, and a locking groove is provided on the side wall of the fixing block. A first support rod is provided inside the wall and is positioned in the locking groove. A second support rod is fixedly connected to the inner wall of the wall. A support plate is provided inside the wall, and a triangular groove is fixedly connected to the bottom of the wall. The buffer element consists of a buffer plate, a limiting plate, and a locking plate. The buffer plate is located on the side wall of the wall, and the limiting plate is fixedly connected to the buffer plate. However, in use, this device lacks a reinforced and sealed structure between the wall and the fixing block, making it prone to water leakage from the corners of the cofferdam. Summary of the Invention

[0003] This utility model addresses the aforementioned shortcomings of the existing technology by providing a water conservancy construction cofferdam device that is easy to assemble and disassemble during use, and reinforces the connection of each cofferdam baffle, thus preventing water leakage during the use of cofferdams in water conservancy construction.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A cofferdam device for water conservancy construction includes a cofferdam baffle, outer protective corner plates, positioning rods, inner protective corner plates, L-shaped clamps, intermediate fixing sleeves, vertical connecting plates, sliding plates, guide slides, springs, and vertical connecting rods. The outer side of the cofferdam baffle is in contact with the outer protective corner plates. A set of cofferdam baffles is symmetrically arranged on the inner side of the outer protective corner plates. Four cofferdam baffles abut against each other to form a quadrilateral. Four outer protective corner plates are distributed at the four corners of the quadrilateral. The outer protective corner plates have two rows of positioning rods on their sides. The cofferdam baffles have multiple baffle insertion holes. The positioning rods are adapted to the baffle insertion holes and pass through the baffle insertion holes. The outer side of the inner protective corner plates is in contact with the inner side of the cofferdam baffles. Four inner protective corner plates are distributed at the four corners of the quadrilateral.

[0006] The inner protective corner plate has multiple corner plate insertion holes. The positioning rod is adapted to the corner plate insertion holes and is inserted into the corner plate insertion holes. The upper and lower surfaces of the cofferdam baffle, outer protective corner plate, and inner protective corner plate are aligned. The L-shaped clamp has an L-shaped clamp inner groove. The upper part of the cofferdam baffle, outer protective corner plate, and inner protective corner plate is adapted to the L-shaped clamp inner groove. The upper part of the cofferdam baffle, outer protective corner plate, and inner protective corner plate is inserted into the L-shaped clamp inner groove. The four L-shaped clamps are distributed at the four corners of the quadrilateral.

[0007] The lower part of the L-shaped clamp is connected to a limiting stop bar, the side of the limiting stop bar is in contact with the outer protective corner plate, the side of the middle fixing sleeve is connected to a vertical connecting plate, a set of vertical connecting plates are distributed on the side of the middle fixing sleeve, multiple middle fixing sleeves are vertically and evenly distributed, and the vertical connecting plates are connected to the cofferdam baffle. Beneficial effects

[0008] 1. The positioning rod of this utility model passes through the insertion hole of the baffle plate. The two cofferdam baffles connected to it are connected by a whole outer protective corner plate, and the angle between the two is right angle. The positioning rod is inserted into the insertion hole of the corner plate. The adjacent cofferdam baffles are limited by the inner protective corner plate. The inner and outer protective corner plates are connected by the inner and outer cooperation of the inner and outer protective corner plates, and the joint of the two cofferdam baffles is sealed. This prevents water leakage from the connection point during the use of cofferdams in water conservancy construction. At the same time, it prevents the end of the cofferdam baffle from deforming or cracking under the pressure of water flow. Multiple intermediate fixing sleeves distributed vertically are connected by a vertical connecting plate, so that the multiple intermediate fixing sleeves are integrated. The sliding plate is inserted into the inner hole of the fixing sleeve. The intermediate fixing sleeves, the vertical connecting plate, and the sliding plate form a positioning frame. The vertical connecting plate is connected to the cofferdam baffle, so that the entire positioning frame is fixed on the inner side of the cofferdam baffle.

[0009] 2. In this utility model, the guide slide rod passes through the spring, guiding the spring so that the spring, supported by the fixed sleeve side plate, applies a pushing force to the card plate side plate, causing the positioning rod to insert into the U-shaped slot. The sliding card plate presses the inner protective corner plate tightly onto the cofferdam baffle, preventing the inner protective corner plate from slipping off the positioning slide rod during the use of the cofferdam in water conservancy construction. The upper part of the cofferdam baffle, outer protective corner plate, and inner protective corner plate is inserted into the inner groove of the L-shaped clamp plate, which tightly fits the cofferdam baffle, outer protective corner plate, and inner protective corner plate together, preventing the outer protective corner plate from falling off the outside of the cofferdam baffle during the use of the cofferdam in water conservancy construction. At the same time, the cofferdam baffle is reinforced. The movement of multiple sliding card plates distributed vertically can be controlled by pulling the vertical connecting rod, causing the sliding card plate to disconnect from the inner protective corner plate and disassemble the inner protective corner plate. This cofferdam is easy to assemble and disassemble during use, and the connection of each cofferdam baffle is reinforced, preventing water leakage during the use of the cofferdam in water conservancy construction. Attached Figure Description

[0010] Figure 1This is a schematic diagram of the structure of a cofferdam device for water conservancy engineering construction according to the present invention.

[0011] Figure 2 This is a schematic diagram of the structure of the cofferdam baffle and outer protective corner plate described in this utility model.

[0012] Figure 3 This is a schematic diagram of the intermediate fixing sleeve and sliding plate structure described in this utility model.

[0013] Figure 4 This is a cross-sectional view of the intermediate fixing sleeve and sliding plate described in this utility model.

[0014] Figure 5 This is a schematic diagram of the inner protective corner plate structure described in this utility model.

[0015] Figure 6 This is a schematic diagram of the L-shaped clamping plate structure described in this utility model. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments:

[0017] Example 1:

[0018] A cofferdam device for water conservancy engineering construction includes a cofferdam baffle 01, an outer protective corner plate 02, a positioning rod 03, an inner protective corner plate 05, an L-shaped clamping plate 07, an intermediate fixing sleeve 09, a vertical connecting plate 10, a sliding clamping plate 12, a guide slide rod 15, a spring 16, and a vertical connecting rod 17. The outer side of the cofferdam baffle 01 is in contact with the outer protective corner plate 02. A set of cofferdam baffles 01 are symmetrically arranged on the inner side of the outer protective corner plate 02. The four cofferdam baffles 01 abut against each other to form a quadrilateral. The four outer protective corner plates... 02 are distributed at the four corners of the quadrilateral. The outer protective corner plate 02 has two rows of positioning rods 03 on its side. The cofferdam baffle 01 has multiple baffle holes 04. The positioning rods 03 are adapted to the baffle holes 04. The positioning rods 03 pass through the baffle holes 04. The entire outer protective corner plate 02 ensures that the two cofferdam baffles 01 connected to it are connected and that the angle between them is right angle. The outer side of the inner protective corner plate 05 fits against the inner side of the cofferdam baffle 01. The four inner protective corner plates 05 are distributed at the four corners of the quadrilateral.

[0019] Example 2:

[0020] The inner protective corner plate 05 of this utility model has multiple corner plate insertion holes 06. A positioning rod 03 is adapted to the corner plate insertion holes 06 and is inserted into them. The inner protective corner plate 05 limits the movement of adjacent cofferdam baffles 01. The inner and outer protective corner plates 05 and 02 work together to connect two cofferdam baffles 01 while ensuring a seal at their joint. This prevents water leakage from the connection point during the use of cofferdams in water conservancy engineering construction. It also prevents the ends of the cofferdam baffles 01 from deforming or cracking under water pressure. (Cofferdam baffle 01, outer protective corner plate 02) The upper and lower surfaces of the inner protective corner plate 05 are aligned. The L-shaped clamp 07 has an L-shaped clamp inner groove 08. The upper parts of the cofferdam baffle 01, outer protective corner plate 02, and inner protective corner plate 05 are adapted to the L-shaped clamp inner groove 08. The upper parts of the cofferdam baffle 01, outer protective corner plate 02, and inner protective corner plate 05 are inserted into the L-shaped clamp inner groove 08. The four L-shaped clamps 07 are distributed at the four corners of the quadrilateral. The L-shaped clamps 07 make the cofferdam baffle 01, outer protective corner plate 02, and inner protective corner plate 05 fit tightly together. During the use of the cofferdam in water conservancy construction, the outer protective corner plate 02 is prevented from falling off the outside of the cofferdam baffle 01, and the cofferdam baffle 01 is reinforced at the same time.

[0021] Example 3:

[0022] The lower part of the L-shaped clamp 07 of this utility model is connected to the limiting stop bar 19. The side of the limiting stop bar 19 is in contact with the outer protective corner plate 02. The side of the intermediate fixing sleeve 09 is connected to the vertical connecting plate 10. A set of vertical connecting plates 10 are distributed on the side of the intermediate fixing sleeve 09. Multiple intermediate fixing sleeves 09 are vertically and evenly distributed. Multiple intermediate fixing sleeves 09 distributed vertically are connected by a vertical connecting plate 10, so that multiple intermediate fixing sleeves 09 are integrated with each other. The vertical connecting plate 10 is connected to the cofferdam baffle 01, so that the entire positioning frame is fixed inside the cofferdam baffle 01.

[0023] Example 4:

[0024] The intermediate fixing sleeve 09 of this utility model has a fixing sleeve inner hole 18, and a sliding plate 12 is adapted to the fixing sleeve inner hole 18. The sliding plate 12 is inserted into the fixing sleeve inner hole 18 and slides within the fixing sleeve inner hole 18. The intermediate fixing sleeve 09, the vertical connecting plate 10, and the sliding plate 12 form a positioning frame. The sliding plate 12 is symmetrically arranged on both sides of the fixing sleeve inner hole 18. The intermediate fixing sleeve 09 has a fixing sleeve side plate 11 on its side, and the sliding plate 12 has a plate side plate 13 on its side.

[0025] Example 5:

[0026] The guide slide rod 15 of this utility model passes through the fixed sleeve side plate 11 and slides within the fixed sleeve side plate 11. The guide slide rod 15 is connected to the side plate of the retaining plate 13. A spring 16 is sleeved on the guide slide rod 15, with one end of the spring 16 abutting against the retaining plate side plate 13 and the other end abutting against the fixed sleeve side plate 11. A vertical connecting rod 17 is connected to multiple retaining plate side plates 13. Pulling the vertical connecting rod 17 controls the movement of multiple vertically distributed sliding retaining plates 12, causing the sliding retaining plates 12 to disconnect from the inner protective corner plate 05 and disassemble the inner protective corner plate 05. The sliding retaining plate 12 has a U-shaped side. The U-shaped slot 14 and the positioning rod 03 are adapted to each other. The positioning rod 03 is inserted into the U-shaped slot 14. The guide slide rod 15 guides the spring 16, so that the spring 16 applies a pushing force to the side plate 13 of the card plate with the fixed sleeve side plate 11 as support, so that the positioning rod 03 is inserted into the U-shaped slot 14. The inner protective corner plate 05 is pressed onto the cofferdam baffle 01 by the sliding card plate 12. During the use of the cofferdam in water conservancy construction, the inner protective corner plate 05 is prevented from slipping off the positioning rod 03. This cofferdam is easy to disassemble and assemble during use, and the connection of each cofferdam baffle 01 is reinforced and water leakage is prevented during the use of the cofferdam in water conservancy construction.

[0027] Installation steps: First, connect the vertical connecting plate 10 to the intermediate fixing sleeve 09. Insert the sliding plate 12 into the inner hole 18 of the fixing sleeve. Pass the guide slide rod 15 through the side plate 11 of the fixing sleeve and the spring 16 to connect the side plate 13 of the plate. Connect the vertical connecting rod 17 to the side plate 13 of the plate. Connect the vertical connecting plate 10 to the cofferdam baffle 01. Connect the limiting stop rod 19 to the L-shaped clamp 07. Insert the positioning rod 03 into the baffle insertion hole 04 so that the outer side of the adjacent cofferdam baffle 01 is in contact with the outer protective corner plate 02. Make the outer side of the inner protective corner plate 05 in contact with the adjacent cofferdam baffle 01 so that the positioning rod 03 is inserted into the corner plate insertion hole 06. Insert the positioning rod 03 into the U-shaped slot 14.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A cofferdam device for water conservancy engineering construction, characterized in that: The system includes a cofferdam baffle (01), an outer protective corner plate (02), a positioning rod (03), an inner protective corner plate (05), an L-shaped clamp (07), an intermediate fixing sleeve (09), a vertical connecting plate (10), a sliding plate (12), a guide slide rod (15), a spring (16), and a vertical connecting rod (17). The outer side of the cofferdam baffle (01) is in contact with the outer protective corner plate (02). A set of cofferdam baffles (01) are symmetrically arranged on the inner side of the outer protective corner plate (02). The four cofferdam baffles (01) abut against each other to form a quadrilateral. The four outer protective corner plates (02) are distributed at the four corners of the quadrilateral. The outer protective corner plate (02) has two rows of positioning rods (03) on its side. The cofferdam baffle (01) has multiple baffle holes (04). The positioning rods (03) are adapted to the baffle holes (04). The positioning rods (03) pass through the baffle holes (04). The outer side of the inner protective corner plate (05) is in contact with the inner side of the cofferdam baffle (01). The four inner protective corner plates (05) are distributed at the four corners of the quadrilateral. The inner protective corner plate (05) has multiple corner plate holes (06). The positioning rods (03) are adapted to the corner plate holes (06). The positioning rods (03) are inserted into the corner plate holes (06).

2. The cofferdam device for water conservancy engineering construction according to claim 1, characterized in that: The upper and lower surfaces of the cofferdam baffle (01), outer protective corner plate (02), and inner protective corner plate (05) are aligned. The L-shaped clamp (07) has an L-shaped clamp inner groove (08). The upper part of the cofferdam baffle (01), outer protective corner plate (02), and inner protective corner plate (05) is adapted to the L-shaped clamp inner groove (08). The upper part of the cofferdam baffle (01), outer protective corner plate (02), and inner protective corner plate (05) is inserted into the L-shaped clamp inner groove (08). The four L-shaped clamps (07) are distributed at the four corners of the quadrilateral.

3. A cofferdam device for water conservancy engineering construction according to claim 2, characterized in that: The lower part of the L-shaped clamp (07) is connected to the limiting stop (19). The side of the limiting stop (19) is in contact with the outer protective corner plate (02). The side of the middle fixing sleeve (09) is connected to the vertical connecting plate (10). A set of vertical connecting plates (10) are distributed on the side of the middle fixing sleeve (09). Multiple middle fixing sleeves (09) are vertically and evenly distributed. The vertical connecting plate (10) is connected to the cofferdam baffle (01).

4. A cofferdam device for water conservancy engineering construction according to claim 3, characterized in that: The intermediate fixing sleeve (09) has a fixing sleeve inner hole (18), and the sliding plate (12) is adapted to the fixing sleeve inner hole (18). The sliding plate (12) is inserted into the fixing sleeve inner hole (18) and slides in the fixing sleeve inner hole (18). The sliding plate (12) is symmetrically arranged on both sides of the fixing sleeve inner hole (18). The intermediate fixing sleeve (09) has a fixing sleeve side plate (11) on its side, and the sliding plate (12) has a plate side plate (13) on its side.

5. A cofferdam device for water conservancy engineering construction according to claim 1, characterized in that: The guide slide rod (15) passes through the fixed sleeve side plate (11) and slides inside the fixed sleeve side plate (11). The guide slide rod (15) is connected to the card plate side plate (13) on the side. The spring (16) is sleeved on the guide slide rod (15). One end of the spring (16) abuts against the card plate side plate (13), and the other end of the spring (16) abuts against the fixed sleeve side plate (11). The vertical connecting rod (17) is connected to multiple card plate side plates (13) on the side. The sliding card plate (12) has a U-shaped card groove (14) on the side. The positioning rod (03) is adapted to the U-shaped card groove (14) and is inserted into the U-shaped card groove (14).