CN215211108U - Excavation-free steel drum cofferdam installation device - Google Patents
Excavation-free steel drum cofferdam installation device Download PDFInfo
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- CN215211108U CN215211108U CN202023163288.4U CN202023163288U CN215211108U CN 215211108 U CN215211108 U CN 215211108U CN 202023163288 U CN202023163288 U CN 202023163288U CN 215211108 U CN215211108 U CN 215211108U
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Abstract
The utility model discloses an excavation-free steel drum cofferdam installation device, which comprises a negative pressure installation system, a level detection device and a steel drum connection water stop device; the negative pressure mounting system comprises a negative pressure mounting device main body, an electronic mechanical buckle, an annular mounting top cap and a rubber sealing ring; the steel drum connecting and water stopping device comprises a steel drum cofferdam outer ring connecting and water stopping device and an inner ring connecting device; the utility model adopts the negative pressure installation system to install the steel drum, the steel drum is installed without excavation and sinking, the height difference between the suction drum and the steel drum is not needed to be considered, the excavation-free rapid and safe construction of the steel drum cofferdam is realized, the application range is wide, the manufacturing cost is low, the negative pressure installation system can be repeatedly used, and the energy consumption can be reduced; the electronic mechanical buckle ensures that the mounting device is effectively connected with the steel drum, and the construction safety is ensured; the water stopping device at the joint of the outer side of the steel drum cofferdam effectively ensures that the cofferdam filled soil is isolated from the water power of the water area, avoids the risk of loss of the filled soil in the cofferdam and ensures the overall safety of the steel drum cofferdam.
Description
Technical Field
The utility model relates to an offshore formula basis technical field of ocean geotechnical engineering especially relates to an exempt from to excavate steel drum cofferdam installation device.
Background
With the strategic deployment of building oceanic hardships and developing oceanic economy in China, in order to improve the development capability of ocean resources and accelerate the development of oceanic regional economy, the China vigorously advances various oceanic engineering constructions such as coastline protection, harbor construction, important island construction, offshore engineering and the like, and the steel barrel cofferdam plays an important role in the constructions.
The conventional steel drum installation mode can disturb the soft soil around the steel casing, destroy the soil body structure and soften the strength of the steel casing; on the other hand, hyperstatic pore water pressure is formed in soft soil around the steel drum, so that the risk of liquefaction damage of the soil body is increased, and the steel drum cofferdam slippage or fracture damage accident can be induced. In addition, the connection part between the traditional offshore barrel type foundation barrels is easy to have water seepage, and the durability and the safety of the cofferdam are affected.
The novel offshore bucket foundation takes a suction bucket as a mounting device and penetrates the bucket foundation into the soil in a negative pressure applying mode. However, the suction bucket main body adopted for installing the offshore bucket foundation has high requirements on air tightness and top cover strength, the diameter and length of the bucket foundation are limited, and the difficulty of batch production is high; the method is used for the excavation-free steel drum cofferdam penetration construction, the energy loss is large, the sinking depth of the suction drum is limited, the deep foundation needs to be installed for many times, the energy loss is large in the process of pulling out the suction drum, the soil layer is easy to disturb, the construction steps are complex, and the construction period is long.
Therefore, in order to improve the installation efficiency, construction safety and durability of the steel drum cofferdam, reduce the energy loss and soil disturbance in the construction process, and aim at the current engineering situations of complex installation technology, high construction difficulty, large loss and the like of the steel drum cofferdam in the sea area or river water, the excavation-free steel drum cofferdam installation device which is simple in construction, comprehensive, effective, green and energy-saving is urgently needed.
Disclosure of Invention
For overcoming the defects of the prior art, the utility model provides an excavation-free steel drum cofferdam installation device.
The utility model provides a technical scheme that its technical problem adopted is: an excavation-free steel drum cofferdam installation device comprises a negative pressure installation system, a level detection device and a steel drum connecting and water stopping device; the negative pressure mounting system comprises a negative pressure mounting device main body, an electronic mechanical buckle, an annular mounting top cap and a rubber sealing ring; the negative pressure mounting device main body is fixedly connected with the annular mounting top cap in a welding mode; the negative pressure mounting device main body is provided with a through vent hole for air suction and negative pressure release; the annular mounting top cap is formed by integrally forming an annular top plate and a cylindrical side wall, and the section of the annular mounting top cap is L-shaped; the electronic mechanical buckles are uniformly distributed at the bottom of the annular mounting top cap and hinged with the annular mounting top cap, and the electronic mechanical buckles can be controlled to rotate around the annular mounting top cap in a remote control mode, so that the steel barrel is locked or released; the rubber sealing ring is fixed on the inner side of the annular mounting top cap and used for ensuring the sealing property of the connection between the negative pressure mounting system and the steel drum;
the horizontal detection device is fixed on the top edge of the annular mounting top cap and used for measuring the horizontal condition of the negative pressure mounting system in the construction process and ensuring that the steel drum does not incline;
the steel drum connecting and water stopping device comprises a steel drum cofferdam outer ring connecting and water stopping device and a steel drum cofferdam inner ring connecting device; the outer ring of the steel drum cofferdam is connected with the water stopping device and the inner ring of the steel drum cofferdam is connected with the adjacent first steel drum and the second steel drum through the connecting device;
the water stopping device for the outer ring connection of the steel drum cofferdam comprises two outer reserved fixing hooks and a steel drum cofferdam outer ring connecting main body, the two outer reserved fixing hooks are respectively welded and fixed on a first steel drum and a second steel drum, the whole steel drum cofferdam outer ring connecting main body is of a U-shaped steel sheet pile structure, two end connecting joints are of inner hook structures matched with the outer reserved fixing hooks, and water-swelling rubber is wrapped at the connecting joints to ensure that the water-swelling rubber expands and completely fills connecting holes after the two outer reserved fixing hooks and the steel drum cofferdam outer ring connecting main body are installed, so that the phenomenon of leakage of the connecting parts of the water stopping device for the outer ring connection of the steel drum cofferdam and the first steel drum and the second steel drum is avoided;
the inner ring connecting device of the steel drum cofferdam comprises two inner reserved fixing hooks and an inner ring connecting main body of the steel drum cofferdam, the two inner reserved fixing hooks are welded and fixed on a first steel drum and a second steel drum respectively, the whole inner ring connecting main body of the steel drum cofferdam is of a U-shaped steel sheet pile structure, and the two end connecting joints are of inner hook structures which are matched with the inner reserved fixing hooks.
Further, the negative pressure installation device main part is circular steel sheet, negative pressure installation device main part and annular installation hood sealing connection, the lateral wall internal diameter of annular installation hood is greater than offshore formula steel drum diameter.
Furthermore, the electromechanical buckles are orthogonally distributed at the bottom of the annular mounting top cap around the annular center of the annular mounting top cap, the number of the electromechanical buckles can be symmetrically increased on the annular mounting top cap by the annular center according to actual construction requirements, and the electromechanical buckles are controlled to rotate in a remote control mode.
Further, the cross section of the rubber sealing ring can be in an L shape or a U shape; the size of the rubber sealing ring is matched with the wall of the steel drum, so that the wall of the steel drum can be completely contacted and sealed with the rubber sealing ring.
Further, the outer ring connecting and water stopping device of the steel drum cofferdam and the inner ring connecting device of the steel drum cofferdam are both of symmetrical structures, and the outer ring connecting and water stopping device of the steel drum cofferdam and the inner ring connecting device of the steel drum cofferdam are symmetrically arranged relative to a connecting line of the barrel cores of the first steel drum and the second steel drum.
Further, the outside reserved fixing hook and the inside reserved fixing hook are arranged to be lower than the bottom end of an electronic mechanical buckle of the negative pressure mounting system installed at the top of the steel drum in height, so that the reserved fixing hooks are prevented from influencing the work of the negative pressure mounting system.
Furthermore, the water-soluble film is uniformly sprayed on the surface of the water-swellable rubber, and is slowly dissolved in water in the installation process of the water-stopping device connected with the outer ring of the steel drum cofferdam so as to slow down the expansion speed of the water-swellable rubber in the installation process, reduce the injection resistance and ensure the smooth installation of the water-stopping device connected with the steel drum cofferdam.
Furthermore, a pore water pressure sensor and a soil pressure sensor are installed on the wall of the steel drum.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses in adopt the negative pressure mounting system installation steel drum, need not to excavate and sink installation steel drum, directly accomplish the steel drum installation in seabed or riverbed, realized the quick safe construction of excavation-free of steel drum cofferdam, practiced thrift construction cost and time limit, avoided the common engineering problem of the technique of sinking (such as the slope of the barrel type, skew, the super excavation of offshore type barrel type basis bottom, quicksand, etc.) of the open type barrel type basis of traditional offshore excavation limit, and it is little to the peripheral environmental impact on offshore type barrel type basis construction field;
2. the steel drum is installed by adopting the negative pressure installation system, and compared with the steel drum installed by adopting the suction drum, the height difference between the suction drum and the steel drum does not need to be considered, the application range is wide, the manufacturing cost is low, and the manufacturing process is simple; when the steel drum needs to be lengthened, the negative pressure mounting system can be repeatedly used, the steel drum mounting cost is saved, the construction is simple and convenient, the energy consumption is reduced, and the construction effectiveness and safety are ensured;
3. the utility model adopts the negative pressure installation system to install the steel drum, the energy consumption is less in the process of hoisting the drum cover and the steel drum, the drum cover hoisting process is completed after the construction, the energy consumption is less, and the disturbance to the soil layer in the steel drum is small;
4. the level detection device in the utility model can monitor whether the steel drum is inclined or not in real time during the installation process, and ensure the safety and effectiveness of the steel drum construction; the steel drum is ensured to vertically penetrate into the soil through the steel drum penetration guiding device in the construction process;
5. the electronic mechanical buckle in the utility model ensures that the steel drum installation device is effectively connected with the steel drum, and ensures the construction safety; the construction steps are simplified and the construction efficiency is improved by remotely controlling the electromechanical buckle;
6. the middle rubber sealing ring of the utility model ensures the internal tightness of the foundation in the construction process, ensures the maintenance of a set negative pressure value in the barrel, and improves the installation efficiency of the steel barrel;
7. the steel drum in the utility model is an open type steel drum, which is easy to realize the batch production and installation of large-size steel drums and can be applied to large-size ports, breakwaters, cofferdams, islands and other ocean construction projects;
8. the steel drum installation device can be used repeatedly, and when a plurality of groups of steel drums with the same diameter need to be installed, the steel drums can be constructed in batches; when the annular outer diameter of the bottom of the steel drum is smaller than the outer diameter of the rubber sealing ring and larger than the inner diameter of the rubber sealing ring, the top cap and the rubber sealing ring can be installed in an annular mode through adjustment, and the steel drum can be repeatedly used for installation of steel drums with different diameters;
9. the utility model discloses the watertight fittings of well steel drum cofferdam outside junction effectively guarantees that the water conservancy in cofferdam filling and waters is isolated, avoids the interior filling loss risk of cofferdam, guarantees the whole security in steel drum cofferdam.
Drawings
Fig. 1 is a schematic structural view of a negative pressure installation system and a level detection device provided by an embodiment of the present invention;
fig. 2 is a top view of the negative pressure installation system and the level detection device provided by the embodiment of the present invention;
FIG. 3 is a top view of the excavation-free steel cylinder cofferdam;
FIG. 4 is a schematic diagram of an outer ring connection water stop structure of the excavation-free steel cylinder cofferdam;
FIG. 5 is a front view of an excavation-free steel cylinder cofferdam;
FIG. 6 is a schematic view of an inner ring connecting structure of the excavation-free steel cylinder cofferdam;
fig. 7 is a schematic view of the excavation-free steel drum cofferdam installation device provided by the embodiment of the utility model completing preliminary connection and hoisting to a preset sea area through a mechanical buckle;
in the figure, a negative pressure mounting system 1, a negative pressure mounting device main body 1-1, an air vent 1-2, an electronic mechanical buckle 1-3, an annular mounting top cap 1-4, a rubber sealing ring 1-5, a level detection device 2, a steel drum 3, an underwater soil body 4, a steel drum cofferdam outer ring connecting water stop device 5, an outer side reserved fixed hook 5-1, a steel drum outer ring connecting main body 5-2, water swelling rubber 5-3, a steel drum cofferdam inner ring connecting device 6, an inner side reserved fixed hook 6-1, a steel drum cofferdam inner ring connecting main body 6-2, a first steel drum 7 and a second steel drum 8.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 1 to 6, the excavation-free steel drum cofferdam installation device provided in this embodiment includes a negative pressure installation system 1, a level detection device 2, and a steel drum connection water stop device.
As shown in fig. 1 and 2, the negative pressure mounting system 1 comprises a negative pressure mounting device main body 1-1, an electromechanical buckle 1-3, an annular mounting top cap 1-4 and a rubber sealing ring 1-5; the negative pressure mounting device main body 1-1 is fixedly connected with the annular mounting top cap 1-4 in a welding mode; the negative pressure installation device comprises a negative pressure installation device body 1-1, a steel barrel 3 and a negative pressure installation system, wherein the negative pressure installation device body 1-1 is provided with a through vent hole 1-2, when the negative pressure installation system 1 is connected with the steel barrel 3, negative pressure is generated by exhausting air from the vent hole 1-2, and when the steel barrel 3 is installed, the vent hole 1-2 is directly connected with the atmosphere to eliminate the negative pressure; the annular mounting top cap 1-4 is formed by integrally forming an annular top plate and a cylindrical side wall, and the section of the annular mounting top cap is L-shaped; the electromechanical buckles 1-3 are uniformly distributed at the bottoms of the annular mounting top caps 1-4 and hinged with the annular mounting top caps 1-4, and the electromechanical buckles 1-3 can be controlled to rotate around the annular mounting top caps 1-4 in a remote control mode, specifically: after the negative pressure mounting system 1 is preliminarily connected with the steel barrel 3, the electronic mechanical buckle 1-3 is controlled to rotate to lock the steel barrel 3, the negative pressure mounting system 1 is prevented from being separated from the steel barrel 3 during lifting, and after the steel barrel 3 is mounted, the connection between the electronic mechanical buckle 1-3 and the steel barrel 3 is removed; the rubber sealing rings 1-5 are fixed on the inner sides of the annular mounting top caps 1-4 and used for ensuring the connection tightness between the negative pressure mounting system 1 and the steel barrel 3; the horizontal detection device 2 is symmetrically and orthogonally fixed on the top edges of the annular mounting top caps 1-4 and used for measuring the horizontal condition of the negative pressure mounting system 1 in the construction process and ensuring that the steel drum 3 does not incline.
As shown in fig. 3, the steel drum connecting and water stopping device comprises a steel drum cofferdam outer ring connecting and water stopping device 5 and a steel drum cofferdam inner ring connecting device 6; the outer ring of the steel drum cofferdam is connected with the water stopping device 5 and the inner ring of the steel drum cofferdam is connected with the device 6 to connect the adjacent first steel drum 7 and the second steel drum 8.
As shown in fig. 4 and 5, the outer ring connecting and water stopping device 5 of the steel drum cofferdam comprises two outer reserved fixed hooks 5-1 and a steel drum cofferdam outer ring connecting body 5-2, the two outer reserved fixed hooks 5-1 are respectively welded and fixed on a first steel drum 7 and a second steel drum 8, the outer ring connecting main body 5-2 of the steel drum cofferdam is of a U-shaped steel sheet pile structure as a whole, the connecting joints at two ends are of inner hook structures matched with the reserved fixing hooks 5-1 at the outer side, and the connecting joints are wrapped with water-swelling rubber 5-3, so as to ensure that after the two outer sides are reserved with the fixed hooks 5-1 and the steel drum cofferdam outer ring connecting main body 5-2 are installed, the water-swelling rubber 5-3 swells and completely fills the connecting holes, so that the leakage phenomenon at the connecting part of the water stopping device 5 connected with the outer ring of the steel drum cofferdam and the first steel drum 7 and the second steel drum 8 is avoided.
As shown in fig. 6, the inner ring connecting device 6 of the steel drum cofferdam comprises two inner reserved fixing hooks 6-1 and an inner ring connecting body 6-2 of the steel drum cofferdam, the two inner reserved fixing hooks 6-1 are respectively welded and fixed on a first steel drum 7 and a second steel drum 8, the inner ring connecting body 6-2 of the steel drum cofferdam is integrally of a U-shaped steel sheet pile structure, and the connecting joints at two ends are inner hook structures matched with the inner reserved fixing hooks 6-1.
Inside steel drum connection watertight fittings flushed the cofferdam for avoiding the outside ocean water of cofferdam, caused the destruction of steel drum cofferdam, so steel drum cofferdam outer loop connection watertight fittings need to increase water-swelling rubber and seal the stagnant water, and steel drum cofferdam inner ring connecting device need not to prevent the free flow of the inside water of cofferdam, so need not to set up water-swelling rubber.
Specifically, the negative pressure installation device main body 1-1 is a round steel plate, the negative pressure installation device main body 1-1 is connected with the annular installation top cap 1-4 in a sealing mode, and the inner diameter of the side wall of the annular installation top cap 1-4 is larger than the diameter of the offshore steel barrel.
Specifically, the electromechanical buckles 1-3 are distributed at the bottom of the annular mounting top cap 1-4 in a cross-orthogonal manner around the center of the annular mounting top cap 1-4, and the number of the electromechanical buckles 1-3 can be symmetrically increased on the annular mounting top cap 1-4 by the center of the annular mounting top cap according to actual construction requirements; controlling the electromechanical buckles 1-3 in a remote control mode; after the negative pressure mounting system 1 is preliminarily connected with the steel barrel 3, the electronic mechanical buckle 1-3 is controlled to rotate to lock the steel barrel 3, so that the negative pressure mounting system 1 is prevented from being separated from the steel barrel during lifting; and after the steel drum is installed, the connection between the electromechanical buckle 1-3 and the steel drum 3 is released.
Specifically, the cross-sectional shape of the rubber sealing ring 1-5 can adopt an L shape or a U shape and the like; the size of the rubber sealing ring 1-5 is matched with the cylinder wall of the steel drum 3, so that the cylinder wall of the steel drum 3 can be completely contacted and sealed with the rubber sealing ring 1-5.
Specifically, the outer ring connecting and water stopping device 5 of the steel drum cofferdam and the inner ring connecting device 6 of the steel drum cofferdam are both of a symmetrical structure, and the outer ring connecting and water stopping device 5 of the steel drum cofferdam and the inner ring connecting device 6 of the steel drum cofferdam are symmetrically arranged relative to a barrel center connecting line of a first steel drum 7 and a second steel drum 8; the arrangement heights of the outer reserved fixed hook 5-1 and the inner reserved fixed hook 6-1 are lower than the bottom end of an electronic mechanical buckle 1-3 of the negative pressure installation system 1 arranged at the top of the steel barrel 3, so that the reserved fixed hooks are prevented from influencing the work of the negative pressure installation system; the water-swelling rubber 5-3 is uniformly sprayed with a water-soluble film, and is slowly dissolved in water in the installation process of the water-stopping device 5 connected to the outer ring of the steel drum cofferdam, so that the expansion speed of the water-swelling rubber 5-3 in the installation process is reduced, the penetration resistance is reduced, and the smooth installation of the water-stopping device connected to the steel drum cofferdam is ensured.
Specifically, a pore water pressure sensor and a soil pressure sensor are installed on the wall of the steel drum and used for monitoring the conditions of hyperstatic pore water pressure and soil pressure in the soil body around the steel drum in real time in the sinking process of the steel drum 3, correcting the size of negative pressure in the drum according to data feedback and ensuring that the steel drum penetrates at a constant speed.
The utility model discloses the working process of device is as follows:
installing the negative pressure installation system 1 on the steel barrel 3, and locking the steel barrel 3 by the electronic mechanical buckle 1-3; installing a steel barrel injection guide device in the sea area where the steel barrel 3 is preset to be installed, wherein the steel barrel injection guide device is used for preventing the steel barrel 3 from being inclined too much in the installation process; hoisting the assembled steel drum 3 and the negative pressure installation system 1 to a sea area needing to be installed, vertically, slowly and stably penetrating the steel drum 3 through the steel drum penetration guide device by using a crane, and removing the crane when the steel drum approaches an underwater soil body 4, wherein the steel drum 3 slowly and uniformly sinks into the underwater soil body 4 for a certain depth under the action of self weight as shown in figure 7; negative pressure is formed inside the steel barrel 3 by exhausting the air from the vent holes 1-2, and the steel barrel 3 slowly and uniformly sinks continuously under the action of the self weight of the steel barrel and the atmospheric pressure; when the steel barrel 3 is penetrated to the designated high position, the electromechanical buckle 1-3 is controlled to rotate, and the connection between the electromechanical buckle and the steel barrel is released; meanwhile, the air exhaust device of the vent hole 1-2 is disconnected, and the vent hole 1-2 is directly connected with the atmosphere, so that the negative pressure in the barrel is eliminated; lifting the negative pressure mounting device 1 away from the steel drum 3, mounting the upper structure of the steel drum 3, and finally mounting the steel drum 3;
connecting the outer ring connecting body 5-2 of the steel drum cofferdam and the inner ring connecting body 6-2 of the steel drum cofferdam by the reserved fixed hook 5-1 at the outer side and the reserved fixed hook 6-1 at the inner side respectively, thereby connecting adjacent steel drums, as shown in figure 3; after the construction of the steel drum cofferdam is finished, leakage detection is carried out on the connecting part of the outer side (the side connected with seawater/river water) of the steel drum cofferdam, and timely plugging and repairing are carried out on the leaking part, so that the hydraulic power on the two sides of the steel drum cofferdam main body is not communicated.
The foregoing description is considered as illustrative only of the principles of the invention and is not to be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would fall within the scope of the present invention.
Claims (8)
1. The utility model provides an exempt from to excavate steel drum cofferdam installation device which characterized in that: comprises a negative pressure installation system (1), a horizontal detection device (2) and a steel drum connecting water stopping device; the negative pressure mounting system (1) comprises a negative pressure mounting device main body (1-1), an electronic mechanical buckle (1-3), an annular mounting top cap (1-4) and a rubber sealing ring (1-5); the negative pressure mounting device main body (1-1) is fixedly connected with the annular mounting top cap (1-4); the negative pressure mounting device main body (1-1) is provided with a through air vent (1-2) for air suction and negative pressure release; the annular mounting top cap (1-4) is formed by integrally forming an annular top plate and a cylindrical side wall, and the section of the annular mounting top cap is L-shaped; the electronic mechanical buckles (1-3) are uniformly distributed at the bottom of the annular mounting top cap (1-4) and hinged with the annular mounting top cap (1-4), and the electronic mechanical buckles (1-3) can rotate around the annular mounting top cap (1-4) so as to lock or release the steel barrel (3); the rubber sealing rings (1-5) are fixed on the inner sides of the annular mounting top caps (1-4) and used for ensuring the sealing property of the connection between the negative pressure mounting system (1) and the steel barrel (3);
the horizontal detection device (2) is fixed on the top edge of the annular mounting top cap (1-4);
the steel drum connecting and water stopping device comprises a steel drum cofferdam outer ring connecting and water stopping device (5) and a steel drum cofferdam inner ring connecting device (6); the outer ring of the steel drum cofferdam is connected with a water stopping device (5) and the inner ring of the steel drum cofferdam is connected with a device (6) which is used for connecting a first steel drum (7) and a second steel drum (8) which are adjacent;
the steel drum cofferdam outer ring connecting and water stopping device (5) comprises two outer reserved fixing hooks (5-1) and a steel drum cofferdam outer ring connecting main body (5-2), the two outer reserved fixing hooks (5-1) are respectively welded and fixed on a first steel drum (7) and a second steel drum (8), the steel drum cofferdam outer ring connecting main body (5-2) is integrally of a U-shaped steel sheet pile structure, the connecting joints at two ends are inner hook structures matched with the outer reserved fixing hooks (5-1), and the connecting joints are wrapped with water swelling rubber (5-3);
the steel drum cofferdam inner ring connecting device (6) comprises two inner side reserved fixing hooks (6-1) and a steel drum cofferdam inner ring connecting main body (6-2), wherein the two inner side reserved fixing hooks (6-1) are respectively welded and fixed on a first steel drum (7) and a second steel drum (8), the steel drum cofferdam inner ring connecting main body (6-2) is integrally of a U-shaped steel sheet pile structure, and the two end connecting joints are of inner hook structures matched with the inner side reserved fixing hooks (6-1).
2. The trenchless steel drum cofferdam installation apparatus of claim 1, wherein: the negative pressure mounting device is characterized in that the negative pressure mounting device main body (1-1) is a circular steel plate, the negative pressure mounting device main body (1-1) is in sealing connection with the annular mounting top cap (1-4), and the inner diameter of the side wall of the annular mounting top cap (1-4) is larger than the diameter of the steel barrel.
3. The trenchless steel drum cofferdam installation apparatus of claim 1, wherein: the electronic mechanical buckles (1-3) are distributed at the bottoms of the annular mounting top caps (1-4) in a cross-orthogonal manner around the centers of the annular mounting top caps (1-4), and the electronic mechanical buckles (1-3) are controlled to rotate in a remote control mode.
4. The trenchless steel drum cofferdam installation apparatus of claim 1, wherein: the section of the rubber sealing ring (1-5) is L-shaped or U-shaped; the size of the rubber sealing ring (1-5) is matched with the cylinder wall of the steel drum (3), so that the cylinder wall of the steel drum (3) is in contact sealing with the rubber sealing ring (1-5).
5. The trenchless steel drum cofferdam installation apparatus of claim 1, wherein: the outer ring connecting water-stopping device (5) of the steel drum cofferdam and the inner ring connecting device (6) of the steel drum cofferdam are both of symmetrical structures, and the outer ring connecting water-stopping device (5) of the steel drum cofferdam and the inner ring connecting device (6) of the steel drum cofferdam are symmetrically arranged relative to a barrel center connecting line of the first steel drum (7) and the second steel drum (8).
6. The trenchless steel drum cofferdam installation apparatus of claim 1, wherein: the outer side reserved fixing hook (5-1) and the inner side reserved fixing hook (6-1) are arranged at the bottom ends of the electronic mechanical buckles (1-3) which are lower than the negative pressure mounting system (1) arranged at the top of the steel barrel (3).
7. The trenchless steel drum cofferdam installation apparatus of claim 1, wherein: and the surface of the water-swellable rubber (5-3) is uniformly sprayed with a water-soluble film.
8. The trenchless steel drum cofferdam installation apparatus of claim 1, wherein: and a pore water pressure sensor and a soil pressure sensor are arranged on the wall of the steel barrel (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023163288.4U CN215211108U (en) | 2020-12-24 | 2020-12-24 | Excavation-free steel drum cofferdam installation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023163288.4U CN215211108U (en) | 2020-12-24 | 2020-12-24 | Excavation-free steel drum cofferdam installation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215211108U true CN215211108U (en) | 2021-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023163288.4U Active CN215211108U (en) | 2020-12-24 | 2020-12-24 | Excavation-free steel drum cofferdam installation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215211108U (en) |
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2020
- 2020-12-24 CN CN202023163288.4U patent/CN215211108U/en active Active
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