A steel pontoon for deep-water single-wall steel cofferdam construction and its usage method

Abstract

This invention discloses a steel pontoon and its usage method for deep-water single-wall steel cofferdam construction, relating to the field of single-wall steel cofferdam technology. It includes four connecting L-shaped plates, each with a blind groove on one side. The single-wall steel cofferdam is placed between the four connecting L-shaped plates. The lower limiting L-shaped plate and the movable L-shaped plate are adjusted, placing the bottom of the single-wall steel cofferdam on adjacent limiting L-shaped plates and the movable L-shaped plate, while the upper limiting L-shaped plate and the movable L-shaped plate are located inside adjacent grooves, thus limiting the single-wall steel cofferdam. If a circular single-wall steel cofferdam needs to be installed and limited, an arc-shaped plate is installed at one end of a crossbar using a swing block and limiting bolts. Through the connection of an elastic plate, the arc-shaped plate connects and limits the circular single-wall steel cofferdam. A telescopic tube at the center of the pontoon can be adjusted to accommodate single-wall steel cofferdams of different sizes, thereby increasing the applicability of the device.

Description

Technical Field

[0001] This invention relates to the field of single-wall steel cofferdam technology, specifically to a steel pontoon for deep-water single-wall steel cofferdam construction and its usage method. Background Technology

[0002] A single-wall steel cofferdam is a type of cofferdam made of steel plates or other steel materials with a single-wall structure. It is mainly used to enclose construction areas, drain water, and create a dry construction environment. Steel pontoons are required when constructing a single-wall steel cofferdam.

[0003] However, existing steel pontoons used in the construction of single-wall steel cofferdams have some problems in use. They are not convenient to adjust for single-wall steel cofferdams of different sizes or shapes, which reduces the scope of application of the device. They are also not convenient to inflate the pontoons, and if the internal gas is lost, the pontoons need to be replaced, which will increase economic costs. After the single-wall steel cofferdam is moved to the position, it is not convenient to place it. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the existing technology, the purpose of this invention is to provide a steel pontoon for deep-water single-wall steel cofferdam construction and a method of use, which enables convenient adjustment of single-wall steel cofferdams of different sizes, convenient limiting installation of single-wall steel cofferdams of different shapes, and allows the steel pontoon to be inflated for convenient placement of single-wall steel cofferdams.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a steel pontoon for deep-water single-wall steel cofferdam construction, comprising four connecting L-shaped plates, each of the four connecting L-shaped plates having a blind groove on one corresponding side, two adjacent blind grooves having a common fixed connection to a limiting elastic plate, two Y-shaped plates being fixedly connected to the outer edges of each connecting L-shaped plate, two pontoons being provided between the two Y-shaped plates on the same side, two sliding grooves being provided on the side of each Y-shaped plate near the pontoon, each sliding groove having a sliding block movably connected to its inner cavity, a cylinder being fixedly connected to one side of each sliding block, an elastic rope being fixedly connected to the inner cavity of each cylinder, and the end of the elastic rope away from the Y-shaped plate being fixedly connected to the side of the adjacent pontoon.

[0006] Preferably, each of the connecting L-shaped plates has two through holes on its outer edge, and a crossbar is provided through the inner cavity of each through hole. A connecting elastic plate is fixedly connected to one end of each crossbar, and one side of the connecting elastic plate is fixedly connected to the outer edge of the connecting L-shaped plate. A groove is provided at the end of each crossbar away from the connecting elastic plate, and a swing block is provided in the inner cavity of each groove. A first threaded hole is provided in the inner cavity of each swing block, and two second threaded holes are provided in the inner cavity of each groove. A limit bolt is threadedly connected to the inner cavities of two adjacent second threaded holes and the first threaded holes. An arc-shaped plate is fixedly connected to the side of each swing block away from the crossbar.

[0007] Preferably, two slots are formed on the outer edge of the connecting L-shaped plate near the top and bottom. A U-shaped plate is fixedly connected to the inner wall of the slot on the side away from the Y-shaped plate. A movable groove is formed on the outer edge of the U-shaped plate. A movable block is movably connected to the inner cavity of the groove. A limiting L-shaped plate is fixedly connected to one side of the movable block. Three connecting holes are formed on the side of the limiting L-shaped plate away from the U-shaped plate. A blind hole is formed on one side of each connecting hole. The diameter of the blind hole is larger than the diameter of the connecting hole. A fixing plate is provided in the inner cavity of each blind hole. A movable rod is fixedly connected to the side of the fixing plate away from the U-shaped plate. The end of the movable rod away from the fixing plate passes through the adjacent connecting hole. The ends of the three adjacent movable rods away from the fixing plate are jointly fixedly connected to the movable L-shaped plate.

[0008] Preferably, vertical cylinders are inserted into the top and bottom of the connecting L-shaped plate. Each vertical cylinder has a threaded rod inside its cavity. A rotating disk is fixedly connected to the end of the threaded rod away from the connecting L-shaped plate. The end of the threaded rod away from the rotating disk is inserted into one side of the inner cavity of an adjacent vertical cylinder. Vertical grooves are formed on the outer edge of each vertical cylinder. Four threaded rings are threadedly connected to the outer edge of each threaded rod. A limiting plate is fixedly connected to one side of each threaded ring. The side of the limiting plate away from the threaded ring passes through the adjacent vertical groove and is fixedly connected to an elastic U-shaped block. A support plate is fixedly connected to the inner cavity of each elastic U-shaped block.

[0009] Preferably, the top and bottom of the connecting L-shaped plate are provided with two third threaded holes, and four adjusting plates are fixedly connected to the outer edge of the vertical cylinder near the connecting L-shaped plate. The inner cavity of each adjusting plate is provided with a fourth threaded hole, and the inner cavities of adjacent third and fourth threaded holes are threaded together with connecting bolts.

[0010] Preferably, each of the floats has a limiting hole at its top, and a connecting pipe is fixedly connected to the inner cavity of each limiting hole. Each connecting pipe has a sealing plug at its top end, and an elastic connecting plate is fixedly connected to the outer edge of each sealing plug. The side of the elastic connecting plate away from the sealing plug is fixedly connected to the outer edge of the adjacent connecting pipe.

[0011] Preferably, ropes are fixedly connected to the outer edges of the connecting L-shaped plates, and a rectangular frame is fixedly connected to the end of each rope away from the connecting L-shaped plate.

[0012] A method for using steel pontoons in the construction of deep-water single-wall steel cofferdams includes the following steps:

[0013] S1: When the device starts working, remove the upper connecting bolts and take them out from inside the upper adjusting plate. Rotate the vertical cylinder. The vertical cylinder drives the elastic U-shaped block and support plate to rotate through the limiting plate. Rotate the support plate to move the upper support plate away from the top of the connecting L-shaped plate. Then, place the single-wall steel cofferdam between the four connecting L-shaped plates through external equipment. The bottom of the single-wall steel cofferdam will contact the lower limiting L-shaped plate and the movable L-shaped plate, while the upper limiting L-shaped plate and the movable L-shaped plate will be located in the adjacent slots and will not hinder the connection of the single-wall steel cofferdam. After the single-wall steel cofferdam enters between the four connecting L-shaped plates, reinstall the upper vertical cylinder.

[0014] S2: When the single-wall steel cofferdam is placed between the adjacent limiting L-shaped plate and the movable L-shaped plate below, the movable L-shaped plate is pulled. The movable L-shaped plate drives the movable rod and the fixed plate to move, so that it can be adjusted for single-wall steel cofferdams of different widths. If the single-wall steel cofferdam is large, after the single-wall steel cofferdam is placed between the four connecting L-shaped plates, the four connecting L-shaped plates will gradually stretch outward. The four connecting L-shaped plates drive the limiting elastic plate to stretch, and the float drives the telescopic tube at the center to stretch.

[0015] S3: If it is necessary to connect and limit the circular single-wall steel cofferdam, before step S1, take out the arc plate and the swing block, place the swing block in the groove at one end of the adjacent crossbar, take out the limiting bolt, and the limiting bolt passes through the groove and the swing block in sequence to limit the arc plate. After the single-wall steel cofferdam enters between the four connecting L-shaped plates, the arc plate connects and limits the circular single-wall steel cofferdam through the setting of the connecting elastic plate.

[0016] S4: After the single-wall steel cofferdam is connected and limited, the pontoon will make the device float on the water surface, making it easy to move the single-wall steel cofferdam. The external equipment pulls the rectangular frame, and the external equipment moves the four connecting L-shaped plates through the rectangular frame and ropes. After the connecting L-shaped plates are moved to the appropriate position, they are flipped. The top of the single-wall steel cofferdam will rotate to the bottom. Since there are no limiting L-shaped plates and movable L-shaped plates at the top of the single-wall steel cofferdam before the rotation, the single-wall steel cofferdam will move downward after the rotation. The bottom of the single-wall steel cofferdam will gradually contact the support plate. The support plates of different sizes can withstand different forces. When the support plate bears the downward force of the single-wall steel cofferdam, the support plate will gradually swing downward. The support plate drives the elastic U-shaped block to stretch, which can resist the downward force of the single-wall steel cofferdam and slow down the downward speed of the single-wall steel cofferdam.

[0017] S5: In step S4, the float is divided into two parts: a telescopic tube and an elastic tube. Setting up multiple floats can improve the floating effect of the device on the water surface. If the gas inside the float is insufficient, remove the sealing plug from the connecting tube, inflate the inside of the float with an air inflator, and then insert the sealing plug into the connecting tube.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] This invention, through the interoperability of connecting L-shaped plates, pontoons, arc-shaped plates, Y-shaped plates, and other structures, enables the placement of a single-walled steel cofferdam between four connecting L-shaped plates. By adjusting the lower limiting L-shaped plate and the movable L-shaped plate, the bottom of the single-walled steel cofferdam is placed on the adjacent limiting L-shaped plates and the movable L-shaped plate, while the upper limiting L-shaped plate and the movable L-shaped plate are located inside the adjacent groove, thereby limiting the single-walled steel cofferdam. If it is necessary to install and limit a circular single-walled steel cofferdam, the arc-shaped plate is installed on one end of the crossbar through the swing block and the limiting bolt. Through the setting of the connecting elastic plate, the arc-shaped plate connects and limits the circular single-walled steel cofferdam. The telescopic tube set at the center of the pontoon can be adjusted to accommodate single-walled steel cofferdams of different sizes, thereby improving the application range of the device.

[0020] By coordinating the structures such as movable L-shaped plates, support plates, vertical cylinders, and elastic U-shaped blocks, a single-wall steel cofferdam can be placed between four connecting L-shaped plates. By adjusting the lower limiting L-shaped plate and the movable L-shaped plate, and moving the movable L-shaped plate, it can be connected and limited to single-wall steel cofferdams of different widths. However, when the single-wall steel cofferdam is moved to the required position, the connecting L-shaped plates are flipped over, and the top of the single-wall steel cofferdam will gradually fall to the side of the adjacent support plate. Support plates of different sizes are connected by elastic U-shaped blocks, and the support plates will be subjected to the downward pressure of the single-wall steel cofferdam, thus allowing them to be slowly lowered and placed. Attached Figure Description

[0021] Figure 1 This is a perspective view of the present invention;

[0022] Figure 2 This is a schematic diagram of the L-shaped plate structure connecting the components of the present invention;

[0023] Figure 3 This is a schematic diagram of the arc-shaped plate structure of the component of the present invention;

[0024] Figure 4 This is an exploded view of the pontoon, a component of the present invention.

[0025] Figure 5 This is a cross-sectional view of the float of the present invention;

[0026] Figure 6 This is a schematic diagram of the crossbar structure of the component of the present invention;

[0027] Figure 7 This is an exploded view of the movable L-shaped plate of the component of this invention;

[0028] Figure 8 This is a cross-sectional view of the L-shaped plate used to limit the components of the present invention;

[0029] Figure 9 This is a schematic diagram of the movable block structure of the component of the present invention;

[0030] Figure 10 This is a schematic diagram of the support plate structure of the component of the present invention;

[0031] Figure 11 This is a schematic diagram of the vertical cylinder structure of the component of the present invention;

[0032] Figure 12 This is a schematic diagram of the rope structure of the component of the present invention;

[0033] Figure 13 for Figure 4 Enlarged view of point A in the middle;

[0034] Figure 14 for Figure 5 Enlarged view at point B in the middle;

[0035] Figure 15 for Figure 6 Enlarged view of point C in the middle.

[0036] The diagram labels are as follows: 1. Connecting L-shaped plate; 2. Rope; 3. Rectangular frame; 4. Arc-shaped plate; 5. Support plate; 6. Y-shaped plate; 7. Float; 8. Elastic rope; 9. Connecting elastic plate; 10. Crossbar; 11. U-shaped plate; 12. Limiting L-shaped plate; 13. Movable L-shaped plate; 14. Movable rod; 15. Fixed plate; 16. Movable block; 17. Vertical cylinder; 18. Threaded rod; 19. Threaded ring; 20. Limiting plate; 21. Elastic U-shaped block; 22. Rotating disk; 23. Adjusting plate; 24. Connecting bolt; 25. Limiting elastic plate; 26. Cylinder; 27. Slider; 28. Sealing plug; 29. ​​Elastic connecting plate; 30. Connecting pipe; 31. Swinging block; 32. Limiting bolt. Detailed Implementation

[0037] Please see Figure 1-6 , Figure 12-15 The present invention provides a technical solution: a steel pontoon for deep-water single-wall steel cofferdam construction, comprising four connecting L-shaped plates 1, each of the four connecting L-shaped plates 1 having a blind groove on one side of each corresponding side, and two adjacent blind grooves having a common fixed connection to a limiting elastic plate 25, two Y-shaped plates 6 being fixedly connected to the outer edges of each connecting L-shaped plate 1, and two pontoons 7 being provided between the two Y-shaped plates 6 on the same side, two sliding grooves being opened on the side of each Y-shaped plate 6 near the pontoon 7, and sliding blocks 27 being movably connected to the inner cavities of each sliding groove, and cylinders 26 being fixedly connected to one side of each sliding block 27, and elastic ropes 8 being fixedly connected to the inner cavities of each cylinder 26, with the end of the elastic rope 8 away from the Y-shaped plate 6 being fixedly connected to the side of the adjacent pontoon 7, and ropes 2 being fixedly connected to the outer edges of each connecting L-shaped plate 1, with rectangular frames 3 being fixedly connected to the end of each rope 2 away from the connecting L-shaped plate 1;

[0038] Two through holes are opened on the outer edge of the connecting L-shaped plate 1. A crossbar 10 is passed through the inner cavity of each through hole. A connecting elastic plate 9 is fixedly connected to one end of the crossbar 10. One side of the connecting elastic plate 9 is fixedly connected to the outer edge of the connecting L-shaped plate 1. A groove is opened on the end of the crossbar 10 away from the connecting elastic plate 9. A swing block 31 is provided in the inner cavity of each groove. A first threaded hole is opened in the inner cavity of each swing block 31. Two second threaded holes are opened in the inner cavity of each groove. The inner cavities of the two adjacent second threaded holes and the first threaded holes are threaded together with a limit bolt 32. An arc plate 4 is fixedly connected to the side of the swing block 31 away from the crossbar 10.

[0039] The single-walled steel cofferdam is placed between four connecting L-shaped plates 1. The lower limiting L-shaped plate 12 and the movable L-shaped plate 13 are adjusted so that the bottom of the single-walled steel cofferdam is placed on the adjacent limiting L-shaped plates 12 and the movable L-shaped plate 13, while the upper limiting L-shaped plates 12 and the movable L-shaped plate 13 are located inside the adjacent grooves, thereby limiting the single-walled steel cofferdam. If it is necessary to limit the installation of a circular single-walled steel cofferdam, the arc plate 4 is installed at one end of the crossbar 10 through the swing block 31 and the limiting bolt 32. Through the setting of the connecting elastic plate 9, the arc plate 4 connects and limits the circular single-walled steel cofferdam. The telescopic pipe set at the center of the float 7 can be adjusted to accommodate single-walled steel cofferdams of different sizes, thereby improving the application range of the device.

[0040] Further, please refer to Figure 1-3 , Figure 7-11 Two slots are provided on the outer edge of the connecting L-shaped plate 1 near the top and bottom. A U-shaped plate 11 is fixedly connected to the side wall of the slot cavity away from the Y-shaped plate 6. A movable groove is provided on the outer edge of the U-shaped plate 11. A movable block 16 is movably connected to the inner cavity of the groove. A limiting L-shaped plate 12 is fixedly connected to one side of the movable block 16. Three connecting holes are provided on the side of the limiting L-shaped plate 12 away from the U-shaped plate 11. A blind hole is provided on one side of the connecting hole. The diameter of the blind hole is larger than the diameter of the connecting hole. A fixing plate 15 is provided in the inner cavity of the blind hole. A movable rod 14 is fixedly connected to the side of the fixing plate 15 away from the U-shaped plate 11. The end of the movable rod 14 away from the fixing plate 15 passes through the adjacent connecting hole. The ends of the three adjacent movable rods 14 away from the fixing plate 15 are fixedly connected to the movable L-shaped plate 13.

[0041] Vertical cylinders 17 are inserted into both the top and bottom of the connecting L-shaped plate 1. Each vertical cylinder 17 has a threaded rod 18 inside. A rotating disk 22 is fixedly connected to the end of each threaded rod 18 away from the connecting L-shaped plate 1. The end of each threaded rod 18 away from the rotating disk 22 is inserted into one side of the inner cavity of an adjacent vertical cylinder 17. Vertical grooves are formed on the outer edges of each vertical cylinder 17. Four threaded rings 19 are threadedly connected to the outer edges of each threaded rod 18. A limiting plate 20 is fixedly connected to one side of each threaded ring 19. The side of the limiting plate 20 away from the threaded ring 19 passes through the adjacent vertical groove and is fixedly connected to an elastic U-shaped block 21. A support plate 5 is fixedly connected to the inner cavity of each elastic U-shaped block 21. Two third threaded holes are opened at the top and bottom of the connecting L-shaped plate 1. Four adjusting plates 23 are fixedly connected to the outer edge of the vertical cylinder 17 near the connecting L-shaped plate 1. The inner cavity of the adjusting plate 23 is provided with a fourth threaded hole. The inner cavities of adjacent third threaded holes and fourth threaded holes are connected to a connecting bolt 24 by a common thread. The top of the float 7 is provided with a limit hole. The inner cavity of the limit hole is fixedly connected to a connecting pipe 30. The top of the connecting pipe 30 is provided with a sealing plug 28. The outer edge of the sealing plug 28 is fixedly connected to an elastic connecting plate 29. The side of the elastic connecting plate 29 away from the sealing plug 28 is fixedly connected to the outer edge of the adjacent connecting pipe 30.

[0042] The single-walled steel cofferdam is placed between four connecting L-shaped plates 1. The lower limiting L-shaped plate 12 and the movable L-shaped plate 13 are adjusted. The movable L-shaped plate 13 can be moved to connect and limit single-walled steel cofferdams of different widths. When the single-walled steel cofferdam is moved to the required position, the connecting L-shaped plate 1 is flipped over. The top of the single-walled steel cofferdam will gradually fall to the side of the adjacent support plate 5. Support plates 5 of different sizes are connected by elastic U-shaped blocks 21. The support plate 5 will be subjected to the downward pressure of the single-walled steel cofferdam, so that it can be slowly lowered and placed.

[0043] A method for using steel pontoons in the construction of deep-water single-wall steel cofferdams includes the following steps:

[0044] S1: When the device starts working, remove the upper connecting bolt 24 and take it out from the upper adjusting plate 23. Rotate the vertical cylinder 17. The vertical cylinder 17 drives the elastic U-shaped block 21 and the support plate 5 to rotate through the limiting plate 20. Rotate the support plate 5 180 degrees and move the upper support plate 5 away from the top of the connecting L-shaped plate 1. Then, place the single-wall steel cofferdam between the four connecting L-shaped plates 1 through external equipment. The bottom of the single-wall steel cofferdam will contact the lower limiting L-shaped plate 12 and the movable L-shaped plate 13, while the upper limiting L-shaped plate 12 and the movable L-shaped plate 13 will be located in the adjacent slots and will not hinder the connection of the single-wall steel cofferdam. After the single-wall steel cofferdam enters between the four connecting L-shaped plates, reinstall the upper vertical cylinder 17.

[0045] S2: When the single-wall steel cofferdam is placed between the adjacent limiting L-shaped plate 12 and the movable L-shaped plate 13 below, the movable L-shaped plate 13 is pulled. The movable L-shaped plate 13 drives the movable rod 14 and the fixed plate 15 to move, so that it can be adjusted for single-wall steel cofferdams of different widths. If the single-wall steel cofferdam is large, after the single-wall steel cofferdam is placed between the four connecting L-shaped plates 1, the four connecting L-shaped plates 1 will gradually stretch outward. The four connecting L-shaped plates 1 drive the limiting elastic plate 25 to stretch, and the float 7 drives the telescopic tube at the center to stretch.

[0046] S3: If it is necessary to connect and limit the circular single-wall steel cofferdam, before step S1, take out the arc plate 4 and the swing block 31, place the swing block 31 in the groove at one end of the adjacent crossbar 10, take out the limiting bolt 32, and the limiting bolt 32 passes through the groove and the swing block 31 in sequence to limit the arc plate 4. After the single-wall steel cofferdam enters between the four connecting L-shaped plates 1, the arc plate 4 connects and limits the circular single-wall steel cofferdam through the setting of the connecting elastic plate 9.

[0047] S4: After the single-wall steel cofferdam is connected and limited, the float 7 will make the device float on the water surface, which will facilitate the movement of the single-wall steel cofferdam. The external equipment pulls the rectangular frame 3, and the external equipment drives the four connecting L-shaped plates 1 to move through the rectangular frame 3 and the rope 2. After the connecting L-shaped plates 1 are moved to the appropriate position, the connecting L-shaped plates 1 are flipped. The connecting L-shaped plates 1 are flipped 180 degrees, and the top of the single-wall steel cofferdam will rotate to the bottom. Since there is no limitation of the limiting L-shaped plate 12 and the movable L-shaped plate 13 at the top of the single-wall steel cofferdam before the rotation, the single-wall steel cofferdam will move downward after the rotation. The bottom of the single-wall steel cofferdam will gradually contact the support plate 5. The support plates 5 of different sizes can withstand different forces. When the support plate 5 bears the downward force of the single-wall steel cofferdam, the support plate 5 will gradually swing downward. The support plate 5 drives the elastic U-shaped block 21 to stretch, which can resist the downward force of the single-wall steel cofferdam and slow down the downward speed of the single-wall steel cofferdam.

[0048] S5: In step S4, the float 7 is divided into two parts: a telescopic tube and an elastic tube. Setting multiple floats 7 can improve the floating effect of the device on the water surface. If the gas inside the float 7 is insufficient, the sealing plug 28 is removed from the connecting tube 30, the float 7 is inflated by the air inflator, and then the sealing plug 28 is inserted into the connecting tube 30.

[0049] Working principle: When the device starts working, remove the upper connecting bolt 24 and take it out from the upper adjusting plate 23. Rotate the vertical cylinder 17. The vertical cylinder 17 drives the elastic U-shaped block 21 and the support plate 5 to rotate through the limiting plate 20. Rotate the support plate 5 180 degrees and move the upper support plate 5 away from the top of the connecting L-shaped plate 1. Then, place the single-wall steel cofferdam between the four connecting L-shaped plates 1 through external equipment. The bottom of the single-wall steel cofferdam will contact the lower limiting L-shaped plate 12 and the movable L-shaped plate 13, while the upper limiting L-shaped plate 12 and the movable L-shaped plate 13 will be located in the adjacent slots and will not hinder the connection of the single-wall steel cofferdam. After the single-wall steel cofferdam enters between the four connecting L-shaped plates, reinstall the upper vertical cylinder 17.

[0050] When the single-wall steel cofferdam is placed between the adjacent limiting L-shaped plate 12 and the movable L-shaped plate 13 below, pulling the movable L-shaped plate 13 causes the movable rod 14 and the fixed plate 15 to move, thus allowing adjustment for single-wall steel cofferdams of different widths. If the single-wall steel cofferdam is large, after the single-wall steel cofferdam is placed between the four connecting L-shaped plates 1, the four connecting L-shaped plates 1 will gradually stretch outwards, causing the limiting elastic plate 25 to stretch, and the float 7 to move the center... The telescopic pipe at the location is stretched. If it is necessary to connect and limit the circular single-wall steel cofferdam, before step S1, take out the arc plate 4 and the swing block 31, place the swing block 31 in the groove at one end of the adjacent crossbar 10, take out the limiting bolt 32, and the limiting bolt 32 passes through the groove and the swing block 31 in sequence to limit the arc plate 4. After the single-wall steel cofferdam enters between the four connecting L-shaped plates 1, the arc plate 4 connects and limits the circular single-wall steel cofferdam through the setting of the connecting elastic plate 9.

[0051] After the single-wall steel cofferdam is connected and limited, the float 7 will make the device float on the water surface, facilitating the movement of the single-wall steel cofferdam. The float 7 consists of two parts: a telescopic tube and an elastic tube. Setting multiple floats 7 can improve the floating effect of the device on the water surface. If the gas inside the float 7 is insufficient, the sealing plug 28 is removed from the connecting tube 30, and the inside of the float 7 is inflated using an air inflator. Then, the sealing plug 28 is inserted into the connecting tube 30. The rectangular frame 3 is pulled by external equipment. The external equipment moves the four connecting L-shaped plates 1 through the rectangular frame 3 and the rope 2. After the connecting L-shaped plates 1 are moved to the appropriate position, the connecting L-shaped plates 1 are... The L-shaped plate 1 is flipped 180 degrees, causing the upper part of the single-wall steel cofferdam to rotate to the lower part. Since there are no limiting L-shaped plates 12 and movable L-shaped plates 13 at the top of the single-wall steel cofferdam before the rotation, the single-wall steel cofferdam will move downward after the rotation. The lower part of the single-wall steel cofferdam will gradually contact the support plate 5. The support plates 5 of different sizes can withstand different forces. When the support plate 5 bears the downward force of the single-wall steel cofferdam, the support plate 5 will gradually swing downward. The support plate 5 drives the elastic U-shaped block 21 to stretch, which can resist the downward movement of the single-wall steel cofferdam and slow down the downward speed of the single-wall steel cofferdam.

Claims

1. A steel pontoon for deep-water single-wall steel cofferdam construction, comprising four connecting L-shaped plates (1), characterized in that: Each of the four connecting L-shaped plates (1) has a blind groove on one side. The inner cavity of two adjacent blind grooves is fixedly connected to a limiting elastic plate (25). Two Y-shaped plates (6) are fixedly connected to the outer edge of each connecting L-shaped plate (1). Two floats (7) are provided between the two Y-shaped plates (6) on the same side. Two sliding grooves are opened on the side of each Y-shaped plate (6) near the floats (7). A slider (27) is movably connected to the inner cavity of each sliding groove. A cylinder (26) is fixedly connected to one side of each slider (27). An elastic rope (8) is fixedly connected to the inner cavity of each cylinder (26). The end of the elastic rope (8) away from the Y-shaped plate (6) is fixedly connected to the side of the adjacent float (7). Two slots are opened on the outer edge of the connecting L-shaped plate (1) near the top and bottom. A U-shaped plate (11) is fixedly connected to the side wall of the slot cavity away from the Y-shaped plate (6). A movable groove is opened on the outer edge of the U-shaped plate (11). A movable block (16) is movably connected to the inner cavity of the groove. A limiting L-shaped plate (12) is fixedly connected to one side of the movable block (16). A movable L-shaped plate (13) is connected to the side of the limiting L-shaped plate (12) away from the U-shaped plate (11).

2. The steel pontoon for deep-water single-wall steel cofferdam construction according to claim 1, characterized in that: Two through holes are opened on the outer edge of the connecting L-shaped plate (1). A crossbar (10) is provided through the inner cavity of each through hole. A connecting elastic plate (9) is fixedly connected to one end of each crossbar (10). One side of the connecting elastic plate (9) is fixedly connected to the outer edge of the connecting L-shaped plate (1). A groove is opened on the end of the crossbar (10) away from the connecting elastic plate (9). A swing block (31) is provided in the inner cavity of each groove. A first threaded hole is opened in the inner cavity of each swing block (31). Two second threaded holes are opened in the inner cavity of each groove. A limit bolt (32) is threadedly connected to the inner cavities of the two adjacent second threaded holes and the first threaded holes. An arc plate (4) is fixedly connected to the side of the swing block (31) away from the crossbar (10).

3. The steel pontoon for deep-water single-wall steel cofferdam construction according to claim 1, characterized in that: The limiting L-shaped plate (12) has three connecting holes on the side away from the U-shaped plate (11). Each connecting hole has a blind hole on one side. The diameter of the blind hole is larger than that of the connecting hole. Each blind hole has a fixing plate (15) inside. Each fixing plate (15) is fixedly connected to a movable rod (14) on the side away from the U-shaped plate (11). The end of the movable rod (14) away from the fixing plate (15) passes through the adjacent connecting hole. The ends of the three adjacent movable rods (14) away from the fixing plate (15) are fixedly connected to a movable L-shaped plate (13).

4. A steel pontoon for deep-water single-wall steel cofferdam construction according to claim 1, characterized in that: Vertical cylinders (17) are inserted into the top and bottom of the connecting L-shaped plate (1). Each vertical cylinder (17) has a threaded rod (18) in its inner cavity. A rotating disk (22) is fixedly connected to the end of the threaded rod (18) away from the connecting L-shaped plate (1). The end of the threaded rod (18) away from the rotating disk (22) is inserted into the inner cavity of the adjacent vertical cylinder (17). Vertical grooves are opened on the outer edge of each vertical cylinder (17). Four threaded rings (19) are threadedly connected to the outer edge of each threaded rod (18). A limiting plate (20) is fixedly connected to one side of each threaded ring (19). The side of the limiting plate (20) away from the threaded ring (19) passes through the adjacent vertical groove and is fixedly connected to an elastic U-shaped block (21). A support plate (5) is fixedly connected to the inner cavity of each elastic U-shaped block (21).

5. A steel pontoon for deep-water single-wall steel cofferdam construction according to claim 4, characterized in that: The top and bottom of the connecting L-shaped plate (1) are provided with two third threaded holes. The outer edge of the vertical cylinder (17) near the connecting L-shaped plate (1) is fixedly connected with four adjusting plates (23). The inner cavity of the adjusting plates (23) is provided with a fourth threaded hole. The inner cavities of the adjacent third threaded holes and fourth threaded holes are threaded together with connecting bolts (24).

6. A steel pontoon for deep-water single-wall steel cofferdam construction according to claim 1, characterized in that: Each of the floats (7) has a limiting hole at the top. Each limiting hole has a connecting pipe (30) fixedly connected to its inner cavity. Each connecting pipe (30) has a sealing plug (28) at its top. Each sealing plug (28) has an elastic connecting plate (29) fixedly connected to its outer edge. The side of the elastic connecting plate (29) away from the sealing plug (28) is fixedly connected to the outer edge of the adjacent connecting pipe (30).

7. A steel pontoon for deep-water single-wall steel cofferdam construction according to claim 1, characterized in that: The outer edge of the connecting L-shaped plate (1) is fixedly connected with ropes (2), and the end of the rope (2) away from the connecting L-shaped plate (1) is fixedly connected with a rectangular frame (3).

8. The method of using a steel pontoon for deep-water single-wall steel cofferdam construction according to any one of claims 1-7, characterized in that, Includes the following steps: S1: When the device starts working, take out the upper connecting bolt (24), take out the upper connecting bolt (24) from the inside of the upper adjusting plate (23), rotate the vertical cylinder (17), the vertical cylinder (17) drives the elastic U-shaped block (21) and the support plate (5) to rotate through the limiting plate (20), rotate the support plate (5) 180 degrees, move the upper support plate (5) away from the top of the connecting L-shaped plate (1), and then place the single-wall steel cofferdam between the four connecting L-shaped plates (1) through external equipment. The bottom of the single-wall steel cofferdam will contact the lower limiting L-shaped plate (12) and the movable L-shaped plate (13), while the upper limiting L-shaped plate (12) and the movable L-shaped plate (13) will be located in the adjacent slots, which will not hinder the connection limiting of the single-wall steel cofferdam. After the single-wall steel cofferdam enters between the four connecting L-shaped plates, reinstall the upper vertical cylinder (17); S2: When the single-wall steel cofferdam is placed between the adjacent limiting L-shaped plate (12) and the movable L-shaped plate (13) below, the movable L-shaped plate (13) is pulled. The movable L-shaped plate (13) drives the movable rod (14) and the fixed plate (15) to move, so that it can be adjusted for single-wall steel cofferdams of different widths. If the single-wall steel cofferdam is large, after the single-wall steel cofferdam is placed between the four connecting L-shaped plates (1), the four connecting L-shaped plates (1) will gradually stretch outward. The four connecting L-shaped plates (1) drive the limiting elastic plate (25) to stretch, and the float (7) drives the telescopic tube at the center to stretch. S3: If it is necessary to connect and limit the circular single-wall steel cofferdam, before step S1, take out the arc plate (4) and the swing block (31), place the swing block (31) in the groove at one end of the adjacent crossbar (10), take out the limiting bolt (32), and the limiting bolt (32) passes through the groove and the swing block (31) in sequence to limit the arc plate (4). After the single-wall steel cofferdam enters between the four connecting L-shaped plates (1), the arc plate (4) connects and limits the circular single-wall steel cofferdam through the setting of the connecting elastic plate (9). S4: After the connection limit of the single-wall steel cofferdam is completed, the float (7) will make the device float on the water surface, which will facilitate the movement of the single-wall steel cofferdam. The external equipment pulls the rectangular frame (3), and the external equipment drives the four connecting L-shaped plates (1) to move through the rectangular frame (3) and the rope (2). After the connecting L-shaped plates (1) are moved to the appropriate position, the connecting L-shaped plates (1) are flipped. The connecting L-shaped plates (1) are flipped 180 degrees, and the top of the single-wall steel cofferdam will rotate to the bottom. Since there was no top of the single-wall steel cofferdam before the rotation, The limiting L-shaped plate (12) and the movable L-shaped plate (13) restrict the single-wall steel cofferdam. After the single-wall steel cofferdam rotates, the single-wall steel cofferdam will move downward and gradually contact the support plate (5) at the bottom. The support plates (5) of different sizes can withstand different forces. When the support plate (5) bears the downward force of the single-wall steel cofferdam, the support plate (5) will gradually swing downward. The support plate (5) drives the elastic U-shaped block (21) to stretch, which can hinder the downward movement of the single-wall steel cofferdam and slow down the downward speed of the single-wall steel cofferdam. S5: In step S4, the float (7) is divided into two parts: a telescopic tube and an elastic tube. Setting multiple floats (7) can improve the floating effect of the device on the water surface. If the gas inside the float (7) is insufficient, the sealing plug (28) is taken out from the connecting tube (30), the float (7) is inflated by the air inflator, and then the sealing plug (28) is inserted into the connecting tube (30).

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