Cofferdam structure for hydraulic building construction of water conservancy and hydropower engineering

Abstract

The utility model relates to the technical field of cofferdam structures, and discloses a cofferdam structure for hydraulic building construction of water conservancy and hydropower engineering, which comprises a first gravity plate, the outer wall of the first gravity plate is rotatably connected with a first baffle, and the outer wall of the first gravity plate is rotatably connected with a second baffle. And a fixed steel chisel is fixedly assembled at the bottom of the first gravity plate. According to the cofferdam structure for hydraulic building construction of the water conservancy and hydropower engineering, a first gravity plate, a first baffle and a second baffle are arranged, under the action of a supporting plate, the first gravity plate, the first baffle and the second baffle form a stable triangular shape, and fixing steel chisels are arranged at the bottoms of the first gravity plate and the first baffle; the installation stability of the first gravity plate is improved under the action of the fixing steel chisel, so that the overall stability of the cofferdam is improved, the number of supporting supports installed in the cofferdam is reduced, the occupied internal space is reduced, and construction operation is prevented from being affected.

Description

TECHNICAL FIELD

[0001] The utility model relates to cofferdam structure technical field, concretely is a cofferdam structure for hydraulic engineering and hydroelectric engineering construction. BACKGROUND

[0002] The water conservancy and hydropower, water transportation port engineering and municipal engineering and civil construction etc. built near water need to set up construction cofferdam for retaining water before construction, form foundation pit and carry out dry land construction, and the cofferdam type is mainly divided into earth-rock cofferdam structure, steel sheet pile structure, bagged earth cofferdam structure, bagged sand cofferdam structure and double-row steel sheet pile frame cofferdam structure according to cofferdam structure.

[0003] The traditional cofferdam is often surrounded by the form of steel plate when using, and the construction area is surrounded under the action of steel plate, but the traditional steel plate is often inserted into the soil at the bottom when installing, and the steel plate is assembled horizontally to form a square enclosure, but the outer wall of the traditional steel plate is a straight line, and when the pressure directly acts on the outer wall of the steel plate, the steel plate installed in parallel bears less pressure, and multiple support frames need to be installed inside to improve the pressure resistance of the steel plate under the auxiliary action of the support frame, but the support frame occupies the internal space, thereby affecting the internal construction operation, so that the traditional steel plate cofferdam is inconvenient to use. UTILITY MODEL CONTENTS

[0004] In view of the defects of the prior art, the utility model provides a cofferdam structure for hydraulic engineering and hydroelectric engineering construction, which has the advantages of small internal space occupation and strong pressure resistance, and solves the problems raised in the above background technology.

[0005] The utility model provides the following technical scheme: a cofferdam structure for hydraulic engineering and hydroelectric engineering construction, including a gravity plate, the outer wall of the gravity plate is rotatably connected with a baffle, the outer wall of the gravity plate is rotatably connected with a second baffle, the bottom of the gravity plate is fixedly assembled with a fixed steel peg, the outer wall of the baffle is rotatably connected with a second gravity plate, the outer wall of the second gravity plate is fixedly assembled with a support plate, the outer wall of the support plate is fixedly assembled with a fixed plate, the outer wall of the support plate is rotatably connected with an auxiliary plate, the outer wall of the support plate is rotatably connected with a support frame, and the outer wall of the support plate is rotatably connected with a second auxiliary plate.

[0006] As a preferred technical scheme of the utility model: the outer wall of the fixed steel peg is conical, and the fixed steel peg is made of high-carbon steel.

[0007] As a preferred technical scheme of the utility model: the outer wall of the one end of the auxiliary plate away from the support plate is rotatably connected with the outer wall of the second baffle, and the outer wall of the one end of the second auxiliary plate away from the support plate is connected with the outer wall of the baffle.

[0008] As a preferred technical solution of this utility model: the outer wall of the support frame is V-shaped, and the outer wall of the end of the support frame away from the support plate is connected to the outer wall of the No. 1 gravity plate.

[0009] As a preferred technical solution of this utility model: the outer walls of the No. 1 gravity plate and the No. 2 gravity plate are both trapezoidal, and the inner cavities of the No. 1 gravity plate and the No. 2 gravity plate are both filled with sand and gravel.

[0010] As a preferred embodiment of this utility model: both the first and second baffles are equipped with fixing steel rods at their bottoms; the fixing plates are welded to the outer wall of the second gravity plate; the outer wall of the second gravity plate is not on the same horizontal line as the outer wall of the first gravity plate.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The cofferdam structure used for hydraulic engineering construction in this water conservancy and hydropower project, through the installation of a No. 1 gravity plate, a No. 1 baffle, and a No. 2 baffle, forms a stable triangular shape under the action of a support plate. The stability of the No. 1 gravity plate installation is improved by fixing steel rods at the bottom of the No. 1 gravity plate and the No. 1 baffle, thereby improving the overall stability of the cofferdam, reducing the need for internal support brackets, thus reducing the internal space occupied and avoiding interference with construction operations.

[0013] 2. The cofferdam structure used in the construction of hydraulic structures in this water conservancy and hydropower project, through the auxiliary plate set on the outer wall of the support plate, forms a triangular structure between the baffle and the gravity plate under the action of the auxiliary plate and the support plate. This allows the baffle and gravity plate to be better fixed under the action of the support plate, and the pressure can be diffused to the surroundings under the action of the outer wall of the first gravity plate, thus making the cofferdam formed by the baffle and the gravity plate more stable. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the support plate structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the fixing plate structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the No. 1 gravity plate structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the support frame structure of this utility model.

[0019] In the diagram: 1. Gravity plate No. 1; 2. Baffle No. 1; 3. Baffle No. 2; 4. Fixing steel rod; 5. Gravity plate No. 2; 6. Support plate; 7. Fixing plate; 8. Auxiliary plate No. 1; 9. Auxiliary plate No. 2; 10. Support frame. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1 - Figure 5 A cofferdam structure for hydraulic engineering construction in water conservancy and hydropower projects includes a first gravity plate 1, a first baffle 2 rotatably connected to the outer wall of the first gravity plate 1, a second baffle 3 rotatably connected to the outer wall of the first gravity plate 1, a fixing steel rod 4 fixedly mounted at the bottom of the first gravity plate 1, a second gravity plate 5 rotatably connected to the outer wall of the first baffle 2, a support plate 6 fixedly mounted to the outer wall of the second gravity plate 5, a fixing plate 7 fixedly mounted to the outer wall of the support plate 6, a first auxiliary plate 8 rotatably connected to the outer wall of the support plate 6, a support frame 10 rotatably connected to the outer wall of the support plate 6, and a second auxiliary plate 9 rotatably connected to the outer wall of the support plate 6.

[0022] In the above structure, by setting fixed steel rods 4 at the bottom of gravity plate 1, baffle 2, and baffle 3 respectively, during the installation of gravity plate 1, baffle 2, and baffle 3, the fixed steel rods 4 are inserted into the soil and continuously pushed into the soil, thereby improving the stability of gravity plate 1, baffle 2, and baffle 3 during use and better achieving the cofferdam for soil.

[0023] In a preferred embodiment, the outer wall of the fixing rod 4 is conical, and the fixing rod 4 is made of high carbon steel.

[0024] In the above structure, by setting a fixed steel rod 4 at the bottom of the first gravity plate 1, when the fixed steel rod 4 is pushed down, since the outer wall of the fixed steel rod 4 is conical, the outer wall of the fixed steel rod 4 can be easily inserted into the soil to fix the first gravity plate 1, so that the first gravity plate 1, the first baffle 2, and the second baffle 3 can form a more stable support structure.

[0025] In a preferred embodiment: the outer wall of the first auxiliary plate 8 away from the support plate 6 is rotatably connected to the outer wall of the second baffle 3, and the outer wall of the second auxiliary plate 9 away from the support plate 6 is connected to the outer wall of the first baffle 2.

[0026] In the above structure, by setting the No. 1 auxiliary plate 8 and the No. 2 auxiliary plate 9 on the outer wall of the support plate 6, the No. 1 gravity plate 1 and the No. 1 baffle 2 can form a triangular shape with the outer wall of the support plate 6 under the action of the No. 1 auxiliary plate 8 and the No. 2 auxiliary plate 9. Thus, under the support of the support plate 6 and the No. 1 auxiliary plate 8 and the No. 2 auxiliary plate 9, the No. 1 gravity plate 1 and the No. 2 baffle 3 have better stability during use, thus better forming a cofferdam.

[0027] In a preferred embodiment: the outer wall of the support frame 10 is V-shaped, and the outer wall of the support frame 10 at the end away from the support plate 6 is connected to the outer wall of the first gravity plate 1.

[0028] In the above structure, the support frame 10 provided on the outer wall of the support plate 6 can support the outer wall of the first gravity plate 1 under the action of the support frame 10, so that the first gravity plate 1 and the support plate 6 can also form a stable triangular shape, so as to better support the first gravity plate 1 and ensure the stability of the first gravity plate 1 during use.

[0029] In a preferred embodiment: the outer walls of gravity plate 1 and gravity plate 5 are both trapezoidal, and the inner cavities of gravity plate 1 and gravity plate 5 are both filled with sand and gravel.

[0030] In the above structure, by setting up a first gravity plate 1 and a second gravity plate 5, the inner cavities of the first gravity plate 1 and the second gravity plate 5 are empty when they are installed. After the first gravity plate 1 and the second gravity plate 5 are installed in the soil, a large amount of sand and gravel is filled into the inner cavities of the first gravity plate 1 and the second gravity plate 5. Under the action of the sand and gravel, the weight of the first gravity plate 1 and the second gravity plate 5 is increased, thereby giving the first gravity plate 1 and the second gravity plate 5 a higher mass, thus increasing their stability under their own weight.

[0031] In a preferred embodiment: both the bottom of the first baffle 2 and the second baffle 3 are equipped with fixing steel rods 4, and fixing plates 7 are welded to the outer wall of the second gravity plate 5. The outer wall of the second gravity plate 5 is not on the same horizontal line as the outer wall of the first gravity plate 1.

[0032] In the above structure, by installing the fixing steel rods 4 at the bottom of the first baffle 2 and the second baffle 3, the first baffle 2 and the second baffle 3 can also be inserted into the soil, thereby improving the stability of the first baffle 2 and the second baffle 3. The fixing plate 7 is fixed to the outer wall of the second gravity plate 5 by welding, thereby ensuring the stability of the support plate 6 and the fixing plate 7 during use.

[0033] Working Principle: During the use of the above equipment, when installing Gravity Plate 1, Baffle 2, and Baffle 3 at the construction site, the installation angles between Gravity Plate 1, Baffle 2, and Baffle 3 are adjusted. Then, Gravity Plate 1, Baffle 2, and Baffle 3 are inserted into the soil, allowing the fixing steel rod 4 to enter the soil. Gravity Plate 5 is then inserted into the soil, ensuring it is parallel to Gravity Plate 1, and Baffles 2 and 3 are installed at a 30-degree angle to Gravity Plate 1. Next, the fixing plate 7 is installed, and the support plate 6 and fixing plate 7 are welded together onto the outer wall of Gravity Plate 5. Finally, the outer walls of Auxiliary Plate 8, Auxiliary Plate 9, and Support Frame 10 (the end furthest from Support Plate 6) are connected to Gravity Plate 5. Baffle 3 is connected to the outer walls of Baffle 2 and Gravity Plate 1. Under the action of Support Plate 6, Baffle 2, Baffle 3 and Gravity Plate 1, a triangular structure is formed, thereby improving the stability of Gravity Plate 1, Baffle 2 and Baffle 3 during use. By setting the outer wall of Gravity Plate 1 into a trapezoidal shape, the external pressure acting on the outer wall of Gravity Plate 1 is dispersed in all directions, thus ensuring the stability of Gravity Plate 1, Baffle 2, Baffle 3 and Gravity Plate 5. Under the action of Auxiliary Plate 8, Auxiliary Plate 9 and Support Frame 10, the outer walls of Baffle 3, Baffle 2 and Gravity Plate 1 and Support Plate 6 respectively form individual triangular shapes, thereby improving the stability of the equipment during installation and use, and better supporting the cofferdam.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cofferdam structure for hydraulic engineering construction in water conservancy and hydropower projects, comprising a No. 1 gravity plate (1), characterized in that: The outer wall of the first gravity plate (1) is rotatably connected to a first baffle (2), the outer wall of the first gravity plate (1) is rotatably connected to a second baffle (3), the bottom of the first gravity plate (1) is fixedly fitted with a fixing steel rod (4), the outer wall of the first baffle (2) is rotatably connected to a second gravity plate (5), the outer wall of the second gravity plate (5) is fixedly fitted with a support plate (6), the outer wall of the support plate (6) is fixedly fitted with a fixing plate (7), the outer wall of the support plate (6) is rotatably connected to a first auxiliary plate (8), the outer wall of the support plate (6) is rotatably connected to a support frame (10), and the outer wall of the support plate (6) is rotatably connected to a second auxiliary plate (9).

2. The cofferdam structure for hydraulic engineering construction in water conservancy and hydropower projects according to claim 1, characterized in that: The outer wall of the fixing steel rod (4) is conical, and the fixing steel rod (4) is made of high carbon steel.

3. The cofferdam structure for hydraulic engineering construction in water conservancy and hydropower projects according to claim 1, characterized in that: The outer wall of the first auxiliary plate (8) away from the support plate (6) is rotatably connected to the outer wall of the second baffle (3), and the outer wall of the second auxiliary plate (9) away from the support plate (6) is connected to the outer wall of the first baffle (2).

4. A cofferdam structure for hydraulic engineering construction in water conservancy and hydropower projects according to claim 1, characterized in that: The outer wall of the support frame (10) is V-shaped, and the outer wall of the support frame (10) at the end away from the support plate (6) is connected to the outer wall of the first gravity plate (1).

5. A cofferdam structure for hydraulic engineering construction in water conservancy and hydropower projects according to claim 1, characterized in that: The outer walls of the first gravity plate (1) and the second gravity plate (5) are both trapezoidal, and the inner cavities of the first gravity plate (1) and the second gravity plate (5) are both filled with sand and gravel.

6. A cofferdam structure for hydraulic engineering construction in water conservancy and hydropower projects according to claim 1, characterized in that: The bottom of the first baffle (2) and the second baffle (3) are both equipped with fixing steel rods (4). The fixing plate (7) is fixed to the outer wall of the second gravity plate (5) by welding. The outer wall of the second gravity plate (5) is not on the same horizontal line as the outer wall of the first gravity plate (1).

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