Flood prevention movable cofferdam connecting structure

Abstract

The utility model discloses a movable cofferdam connecting structure for flood prevention, which relates to the technical field of movable cofferdams and comprises a body, a water inlet pipe is arranged at the top of the body, a drain pipe is arranged at the bottom of the body, a first connecting unit is arranged at one end of the body and comprises a connecting sleeve, an inserting cavity is formed in the connecting sleeve, and a rotating arm is arranged on the outer wall of the connecting sleeve. The middle of the rotating arm is connected with the connecting sleeve through a rotating shaft, a first connecting arm and a second connecting arm are hinged to the two ends of the rotating arm respectively, a first bolt is arranged at one end of the first connecting arm, and a socket is formed in one end of the second connecting arm; a second connecting unit is arranged at the other end of the body and comprises an inserting arm, the inserting arm can be contained in the inserting cavity, an inserting block is arranged at the position, corresponding to the inserting opening, of the inserting arm, and a first pin hole is formed in the inserting block; two adjacent cofferdams are connected in a mechanical mode, the cofferdams are connected into a whole, and the integrity and the structural strength of the cofferdams are improved.

Description

Technical Field

[0001] This utility model relates to the field of movable cofferdam technology, and in particular to a movable cofferdam connection structure for flood control. Background Technology

[0002] A cofferdam is a temporary retaining structure built during the construction of hydraulic engineering projects to create permanent hydraulic facilities. Its function is to prevent water and soil from entering the construction site, allowing for drainage within the cofferdam, excavation of the foundation pit, and construction of the structure. It can also be used for emergency purposes such as flood control and disaster relief.

[0003] A utility model patent with publication number CN 219430804 U and publication date of July 28, 2023, discloses a water-injection flexible cofferdam. The cofferdam includes a bottom surface and a top surface inside the tube bag. The top surface of the tube bag is provided with a water inlet for injecting water into the tube bag, and the connection between the bottom surface and the top surface of the tube bag is provided with a drain outlet for draining water. The tube bag is provided with baffles, including a left baffle and a right baffle. One side of the left baffle and the right baffle overlaps and is fixedly connected to the middle of the top surface of the tube bag, and the other side of the left baffle and the right baffle are respectively connected to the bottom surface of the tube bag.

[0004] The utility model's support structure, an "inverted V-shaped baffle," is installed inside the pipe bag. It can block water simply by filling it with water. The structure is simple and easy to install and deploy.

[0005] When multiple connections are needed to extend the cofferdam in this patent, the usual practice is to overlap the ends of two adjacent cofferdams. However, this connection method does not have any connecting structure at the overlapping end of the two cofferdams. They only rely on the friction generated by their weight to restrain each other. The stability of this structure is very limited. The cofferdams do not form a whole and are easily washed away when the water flow is large.

[0006] Therefore, there is an urgent need for a movable cofferdam connection structure for flood control, which can improve the strength and integrity of the connection between various cofferdams and increase the water resistance. Utility Model Content

[0007] To address the aforementioned technical problems, this utility model provides a movable cofferdam connection structure for flood control. This structure solves the problem that existing cofferdam connections simply involve overlapping the ends of two adjacent cofferdams. However, this connection method lacks any connecting structure at the overlapping end of the two cofferdams, relying solely on the frictional force generated by their weight to restrain each other. Consequently, the cofferdams do not form a unified whole, resulting in low structural strength and easy disintegration after connection.

[0008] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0009] A movable cofferdam connection structure for flood control includes a main body, an inlet pipe at the top of the main body, a drain pipe at the bottom of the main body, a first connecting unit at one end of the main body, the first connecting unit including a connecting sleeve, an insertion cavity on the connecting sleeve, a rotating arm on the outer wall of the connecting sleeve, the middle part of the rotating arm being connected to the connecting sleeve via a rotating shaft, a first connecting arm and a second connecting arm being hinged to both ends of the rotating arm respectively, a first pin at one end of the first connecting arm, and an insertion port at one end of the second connecting arm.

[0010] The other end of the main body is provided with a second connecting unit. The second connecting unit includes a plug arm that can be accommodated in the plug cavity. The plug arm is provided with a plug block at the position corresponding to the plug port, and the plug block is provided with a first pin hole.

[0011] Furthermore, the top of the connecting sleeve is provided with a second pin, and the insert arm is provided with a second pin hole at the position of the second pin.

[0012] Furthermore, both the first connecting arm and the second connecting arm are provided with limiting plates.

[0013] Furthermore, the cross-section of the body is a right-angled trapezoid.

[0014] Furthermore, a water baffle is provided at one end of the main body located in the first connecting unit, and the water baffle is provided along the inclined side and bottom plate of the main body.

[0015] Furthermore, the length of the insert arm is greater than the distance between the first insert pin and the first pin hole.

[0016] In summary, the beneficial technical effects of this utility model are as follows:

[0017] By continuously inserting the insert arm into the cavity, the insert arm further drives the insert block to push the second connecting arm backward. The second connecting arm further drives the rotating arm to rotate clockwise along the rotating shaft. The rotating arm further drives the first connecting arm to move forward. The first connecting arm drives the first insert pin to approach the first pin hole, and finally inserts it into the first pin hole to realize the connection between the first connecting unit and the second connecting unit of the adjacent body. This mechanically connects the two bodies, improves the overall integrity and structural strength of the multiple bodies after connection, making it more robust and with higher water resistance. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 yes Figure 1 A diagram from another angle;

[0020] Figure 3 yes Figure 1An enlarged schematic diagram of part A;

[0021] Figure 4 yes Figure 2 A large schematic diagram of part B;

[0022] Figure 5 This is a schematic diagram of two bodies connected together;

[0023] Figure 6 yes Figure 5 Enlarged schematic diagram of part C.

[0024] Reference numerals in the attached drawings: 1. Body; 2. Inlet pipe; 3. Drain pipe; 4. Connecting sleeve; 5. Insertion cavity; 6. Insertion arm; 7. Rotating arm; 8. First connecting arm; 9. Second connecting arm; 10. First pin; 11. Insertion port; 12. Insertion block; 13. First pin hole; 14. Second pin; 15. Second pin hole; 16. Limiting plate; 17. Water baffle. Detailed Implementation

[0025] The present invention will now be described clearly and completely with reference to the embodiments.

[0026] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0027] In the description of the embodiments, unless otherwise expressly specified and limited, the terms "set," "connect," etc., should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or a connection through an intermediate medium, or it can be a connection within 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.

[0028] See appendix Figure 1-4 The diagram shows a movable cofferdam connection structure for flood control, including a body 1, which is made of rubber and has a right-angled trapezoidal cavity structure. The top of the body 1 is provided with a water inlet pipe 2 and the bottom is provided with a drain pipe 3. When in use, the body 1 is filled with water by connecting a water pump to the water inlet pipe 2. When stored, the water is discharged through the drain pipe 3.

[0029] One end of the main body 1 is provided with a first connecting unit, wherein the first connecting unit includes a rectangular connecting sleeve 4, the connecting sleeve 4 is provided with a cavity 5 along the length direction of the main body 1, both sides of the connecting sleeve 4 are provided with rotating arms 7, the middle part of the rotating arm 7 is connected to the connecting sleeve 4 through a rotating shaft, the upper and lower ends of the rotating arm 7 are respectively hinged with a first connecting arm 8 and a second connecting arm 9, wherein a first pin 10 is provided at the end of the first connecting arm 8 away from the rotating arm 7, which is movably perpendicular to the length direction, and a socket 11 is provided at the end of the second connecting arm 9 away from the rotating arm 7.

[0030] The other end of the main body 1 is provided with a second connecting unit, which includes a plug arm 6 that is inserted into the socket 5. Simultaneously, plug blocks 12 are provided on both sides of the plug arm 6 corresponding to the positions of the socket 11. A first pin hole 13 is formed on the plug block 12 along the direction of movement of the first pin 10, allowing the first pin 10 to be accommodated within the first pin hole 13. When two main bodies 1 are connected, the first and second connecting units on adjacent main bodies 1 are placed opposite each other. Then, one main body 1 is pushed to insert the plug block 12 into the socket 11. As the two main bodies 1 move closer together, the plug block 12 will... Further, the second connecting arm 9 moves backward, and the second connecting arm 9 causes the rotating arm 7 to rotate clockwise. The rotating arm 7 further drives the first connecting arm 8 to move forward. During the forward movement of the first connecting arm 8, the first pin 10 approaches the first pin hole 13, and finally the first pin 10 is inserted into the first pin hole 13. At this time, the connection between the first connecting unit and the second connecting unit is realized, and the purpose of connecting the two adjacent bodies 1 is further achieved. In this way, all bodies 1 are connected into a whole, which improves the connection strength of the entire cofferdam, prevents the problem of the cofferdam being washed away, and makes its water resistance strength higher.

[0031] Furthermore, in order to enable the plug 12 to continuously push the second connecting arm 9, the length of the plug arm 6 is greater than the distance between the first plug pin 10 and the first pin hole 13;

[0032] Meanwhile, in order to further improve the integrity of the two bodies 1, a second pin hole 15 is provided through the insertion arm 6 in the direction parallel to the first pin 10. In addition, a second pin 14 is movably provided in the connecting sleeve 4 corresponding to the position of the second pin hole 15. When the first pin 10 is inserted into the first pin hole 13, the second pin 14 is also inserted into the second pin hole 15.

[0033] Furthermore, after the two bodies 1 are connected, in order to improve the water blocking effect and sealing of the cofferdam, a water baffle 17 is provided at one end of the body 1 located in the first connecting unit, and the water baffle 17 is set along the inclined side and bottom of the body 1. When the first unit and the second unit are connected, one end of the water baffle 17 just abuts against the side wall of the other body 1.

[0034] Finally, in order to prevent the first connecting arm 8 and the second connecting arm 9 from twisting and deforming under the impact of water flow after the main body 1 is connected, the connecting sleeve 4 is provided with a limiting plate 16 at the position of the first connecting arm 8 and the second connecting arm 9. The limiting plate 16 improves the directionality of the first connecting arm 8 and the second connecting arm 9 along the connecting sleeve 4, and at the same time ensures the cooperation between the socket 11 and the plug block 12.

[0035] See appendix for connection details. Figure 5-6 As shown, the two bodies 1 are placed opposite each other with the first connecting unit and the second connecting unit in a way that they are placed opposite each other. Then, the body 1 with the second connecting unit is pushed closer to the other body 1 until the plug 12 is inserted into the socket 11. Then, the pushing continues. At this time, the second connecting arm 9 moves away from the plug 12 under the action of the plug 12. At the same time, the second connecting arm 9 drives the rotating arm 7 to rotate clockwise. The rotating arm 7 further drives the first connecting arm 8 to move forward and the first plug 10 is inserted into the first pin hole 13. At this time, the second plug 14 is also inserted into the second pin hole 15. And one end of the baffle plate 17 abuts against the side wall of the other body 1 to complete the final connection.

[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape and principle of the present utility model should be included within the scope of protection of the present utility model.

Claims

1. A movable cofferdam connection structure for flood control, comprising a body (1), wherein a water inlet pipe (2) is provided at the top of the body (1), and a drainage pipe (3) is provided at the bottom of the body (1), characterized in that: One end of the main body (1) is provided with a first connecting unit, the first connecting unit includes a connecting sleeve (4), the connecting sleeve (4) is provided with a cavity (5), the outer wall of the connecting sleeve (4) is provided with a rotating arm (7), the middle part of the rotating arm (7) is connected to the connecting sleeve (4) through a rotating shaft, the two ends of the rotating arm (7) are respectively hinged with a first connecting arm (8) and a second connecting arm (9), one end of the first connecting arm (8) is provided with a first pin (10), and one end of the second connecting arm (9) is provided with a socket (11); The other end of the main body (1) is provided with a second connecting unit, the second connecting unit includes a plug arm (6), the plug arm (6) can be accommodated in the plug cavity (5), the plug arm (6) is provided with a plug block (12) at the position corresponding to the plug (11), and the plug block (12) is provided with a first pin hole (13).

2. The movable cofferdam connection structure for flood control according to claim 1, characterized in that: The top of the connecting sleeve (4) is provided with a second pin (14), and the insert arm (6) is provided with a second pin hole (15) at the position of the second pin (14).

3. The movable cofferdam connection structure for flood control according to claim 1, characterized in that: Limiting plates (16) are provided on both the first connecting arm (8) and the second connecting arm (9).

4. The movable cofferdam connection structure for flood control according to claim 1, characterized in that: The cross-section of the main body (1) is a right trapezoid.

5. The movable cofferdam connection structure for flood control according to claim 4, characterized in that: The main body (1) is provided with a baffle plate (17) at one end of the first connecting unit. The baffle plate (17) is arranged along the inclined side and bottom plate of the main body (1).

6. The movable cofferdam connection structure for flood control according to claim 1, characterized in that: The length of the insert arm (6) is greater than the distance between the first pin (10) and the first pin hole (13).

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