CN114771771B - Underwater heavy-load lifting and salvaging device - Google Patents
Underwater heavy-load lifting and salvaging device Download PDFInfo
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- CN114771771B CN114771771B CN202210520349.2A CN202210520349A CN114771771B CN 114771771 B CN114771771 B CN 114771771B CN 202210520349 A CN202210520349 A CN 202210520349A CN 114771771 B CN114771771 B CN 114771771B
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- water tank
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- salvaging device
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C7/00—Salvaging of disabled, stranded, or sunken vessels; Salvaging of vessel parts or furnishings, e.g. of safes; Salvaging of other underwater objects
- B63C7/06—Salvaging of disabled, stranded, or sunken vessels; Salvaging of vessel parts or furnishings, e.g. of safes; Salvaging of other underwater objects in which lifting action is generated in or adjacent to vessels or objects
- B63C7/10—Salvaging of disabled, stranded, or sunken vessels; Salvaging of vessel parts or furnishings, e.g. of safes; Salvaging of other underwater objects in which lifting action is generated in or adjacent to vessels or objects using inflatable floats external to vessels or objects
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Farming Of Fish And Shellfish (AREA)
Abstract
The application relates to an underwater heavy-load lifting and salvaging device and a use method thereof, wherein the underwater heavy-load lifting and salvaging device comprises a replacement water tank, the replacement water tank is a sealed box body, at least three ports are formed in the replacement water tank, one port is an air inlet end connected with a gas generator, the other port is an water inlet end and an air outlet end communicated with external sea water, and the other port is an air exhaust end communicated with the external sea water; the filling medium in the replacing water tank is switched between seawater and gas, the whole salvaging device is in a negative buoyancy state when the replacing water tank is filled with seawater, and the whole salvaging device is in a positive buoyancy state when the replacing water tank is filled with gas; through replacing the reliable switching of sea water and gas in the water tank for fishing device can submerge under water and drag the whole come-up of salvage facility, cooperates the surface of water boats and ships to realize lifting salvage, is particularly useful for the salvage of heavy load under water, possesses in time, uses nimble convenient characteristics, and receives the influence of operation sea condition less.
Description
Technical Field
The application relates to the technical field of underwater lifting and salvaging, in particular to an underwater heavy-load lifting and salvaging device and a use method thereof.
Background
In the fields of military, ocean scientific research, ocean engineering and the like, the large manned platform for carrying out lifting, salvaging and rescuing on the bottom after the accident under the condition of large underwater depth has urgent practical requirements.
In the prior art, heavy-load lifting and salvaging operations for deep sea large-tonnage facilities must be carried out by relying on ocean engineering vessels equipped with large-scale heave compensation cranes and other equipment. The existing water surface lifting and salvaging operation mode has the following defects:
1) The operation sea condition is limited, and the use sea condition of the heave compensation crane is generally not more than the class 4 sea condition;
2) The hoisting weight and the operation depth are difficult to expand due to the capacity of the heave compensation hoisting machine;
3) The complex water surface-underwater rigid-flexible multi-body coupling dynamics problem exists, and the operation risk of salvaging large-depth large-tonnage facilities is high;
4) For a task needing quick lifting rescue, response is not timely;
5) The large ocean engineering ships have higher renting value and high operation cost.
Disclosure of Invention
The application aims at the defects in the prior art, and provides the underwater heavy load hoisting and salvaging device with reasonable structure and the use method thereof, so that the device can be matched with a water surface ship to realize hoisting and salvaging, is particularly suitable for salvaging underwater heavy load, has the characteristics of timely response, flexible and convenient use and less influence by the operation sea condition.
The technical scheme adopted by the application is as follows:
the underwater heavy-load lifting and salvaging device comprises a replacement water tank, wherein the replacement water tank is a sealed box body, at least three ports are formed in the replacement water tank, one port is an air inlet end connected with a gas generator, the other port is an water inlet end and an air outlet end communicated with external seawater, and the other port is an air exhaust end communicated with the external seawater; the filling medium in the replacing water tank is switched between seawater and gas, the whole salvaging device is in a negative buoyancy state when the replacing water tank is filled with seawater, and the whole salvaging device is in a positive buoyancy state when the replacing water tank is filled with gas.
As a further improvement of the above technical scheme:
the device also comprises a buoyancy material, the gravity and the buoyancy of the salvaging device are balanced by the arrangement of the buoyancy material, and when the replacement water tank is filled with seawater, the salvaging device is in a slightly negative buoyancy state as a whole by the arrangement of the buoyancy material.
The air inlet end of the replacing water tank is connected with the output end of the gas generator through a blowing-off pipeline, and a valve group I for switching on and off of the pipeline is connected in series on the blowing-off pipeline; the gas generator is filled with a medicament, and the medicament reacts to generate gas which is insoluble in seawater after the gas generator is started and is conveyed into the substitution water tank.
The gas generator is fixedly arranged on the salvaging device and is fixedly connected with the blowing-off pipeline;
or the gas generator is an independent module separated from the salvaging device and is connected with the blowing-off pipeline through a gas supply hose.
The water inlet and outlet ends of the replacing water tank are arranged at the bottom of the tank, and the air outlet end of the replacing water tank is arranged at the top of the tank;
the water inlet end and the water outlet end are sea ports communicated with external sea water, or the water inlet end and the water outlet end are provided with water injection and drainage pipelines extending into the sea water, the air outlet end is provided with a ventilation pipeline extending into the sea water, the water injection and drainage pipelines are connected in series with valve groups III, and the ventilation pipeline is connected in series with valve groups II.
The replacing water tank is of a frame structure made of light metal or a structure combining a metal frame and a water bag, and a medium in the water bag is switched between seawater and gas.
The salvaging device further comprises a thruster, an underwater observation unit, an underwater positioning unit and a lifting hook mechanism, and a power supply, distribution and control unit electrically connected with the thruster, the underwater observation unit, the underwater positioning unit and the gas generator; the fishing device is moved horizontally by the thruster, so that the fishing device is suspended above the salvaged facility; the salvaging device is connected with the salvaged facility through the lifting hook mechanism.
Still include the manipulator, the manipulator sets up in fishing device's below or side below, links up the hoist and mount with by fishing device with lifting hook mechanism through the manipulator.
The device also comprises a guiding winch, and the salvaging device is guided and pulled to the upper side of the salvaged facility through the guiding winch.
The application method of the underwater heavy-load hoisting salvaging device comprises the following steps:
the ROV is distributed through the water surface ship, and the state of the salvaged facilities is observed and estimated;
laying the salvaging device into water through a belt cable by means of a laying system of the water surface ship; in the water inlet process, the seawater is gradually filled into the replacement water tank until the replacement water tank is full, and the salvaging device is gradually submerged under the negative buoyancy state;
after the salvaging device is submerged to a preset depth, the salvaging device is close to and hovers above a salvaged facility by means of the underwater positioning unit and the underwater observation unit and the thruster;
the lifting hook mechanism of the salvaging device is connected with a salvaged facility for lifting by means of a water surface ship or a manipulator;
the water surface ship controls the gas generator to start, generates high-pressure gas and conveys the high-pressure gas into the replacement water tank, seawater in the replacement water tank is gradually blown off and discharged, the positive buoyancy of the salvage device is gradually increased, and the salvaged facility is pulled to leave the sea bottom to open up and float;
in the floating process, the water surface ship synchronously recovers the belt cable until the salvaging device floats to the water surface; in the floating process, the floating speed is adjusted by replacing the adjustment of the sea water quantity in the water tank;
and lifting, towing and transferring the facilities to be salvaged close to the water surface to a preset position by the water surface ship.
The beneficial effects of the application are as follows:
the application has compact and reasonable structure and convenient operation, can submerge under water and drag the salvage device to float upwards by the salvage facility through replacing the reliable switching of the seawater and the gas in the water tank, is matched with the water surface ship to realize the lifting salvage, is especially suitable for the salvage of the underwater heavy load, has the characteristics of timely response, flexible and convenient use, is less influenced by the operation sea condition, and has higher operation safety.
When the lifting and salvaging device is used for carrying out deep sea lifting and salvaging operation, a water surface ship only needs to be provided with a laying winch with a tension protection function, so that the operation can be carried out under more severe sea conditions, and the water surface heavy load lifting and salvaging by utilizing the heave compensation crane can generally only be carried out under the sea condition of no more than 4 levels;
according to the underwater lifting salvaging device, the salvaging depth can be increased by increasing the total amount of the gas generator medicaments under the condition that the volume of the replacement water tank is unchanged; the salvage weight of a single device can be improved by increasing the volume of the replacement water tank and the total medicament amount, or a plurality of lifting salvage devices are adopted to salvage the same facility (the plurality of lifting salvage devices are connected with the salvage facility through a special lifting tool), so that the salvage weight is greatly improved, and the use flexibility is high;
the underwater lifting and salvaging device can be carried by a water mother ship in real time in the operation process of a deep sea manned platform, and can immediately put into an operation task once accidents occur, so that rescue is more timely.
Drawings
FIG. 1 is a block diagram of a fishing apparatus according to the present application.
Fig. 2 is a schematic diagram of the pipeline connection of the replacement water tank of the present application.
FIG. 3 is a schematic diagram of a fishing operation flow of the fishing device of the present application.
Wherein: 1. blowing off the pipeline; 2. a vent line; 3. and a water injection and drainage pipeline.
Detailed Description
The following describes specific embodiments of the present application with reference to the drawings.
As shown in fig. 1 and 2, the underwater heavy-load lifting and salvaging device of the embodiment comprises a replacement water tank, wherein the replacement water tank is a sealed box body, at least three ports are formed in the replacement water tank, one port is an air inlet end connected with a gas generator, the other port is an water inlet end and an air outlet end communicated with external seawater, and the other port is an air exhaust end communicated with the external seawater; the filling medium in the replacement water tank is switched between the seawater and the gas, the whole salvaging device is in a negative buoyancy state when the replacement water tank is filled with the seawater, and the whole salvaging device is in a positive buoyancy state when the replacement water tank is filled with the gas.
In this embodiment, through replacing the reliable switching of sea water and gas in the water tank for fishing device can submerge under water and drag and be floated by the salvage facility is whole, cooperates the surface of water boats and ships to realize lifting salvage, is particularly useful for the salvage of heavy load under water.
The device also comprises a buoyancy material, the gravity and the buoyancy of the salvaging device are balanced by the arrangement of the buoyancy material, and when the replacement water tank is filled with seawater, the salvaging device is in a slightly negative buoyancy state as a whole by the arrangement of the buoyancy material.
In this embodiment, the arrangement position of the buoyancy material on the fishing device needs to be able to ensure the stability of the fishing device in the underwater deployment process.
The air inlet end of the substitution water tank is connected with the output end of the gas generator through a blowing-off pipeline 1, and a valve group I for switching on and off of the pipeline is connected in series on the blowing-off pipeline 1; the gas generator is filled with a medicament, and after the gas generator is started, the medicament reacts to generate gas which is insoluble in seawater and is conveyed into the substitution water tank.
The gas generator is fixedly arranged on the salvaging device and is fixedly connected with the blowing-off pipeline 1;
or the gas generator is an independent module separated from the salvaging device, and is connected with the blowing pipeline 1 through a gas supply hose and a pluggable joint.
In the embodiment, hydrazine, gunpowder or other types of medicaments can be filled in the gas generator, and the medicaments can react under different pressure conditions after the gas generator is started to generate a large amount of gas which is insoluble in seawater; the total amount of the filled medicament is determined according to the parameters of the insoluble gas generation amount of the medicament in unit mass (depending on the medicament type), the lifting and fishing operation depth, the total net volume of the replacement water tank and the like, and the medicament amount and the number of the gas generators of the single gas generator can be flexibly designed according to the needs.
The water inlet and outlet ends of the replacing water tank are arranged at the bottom of the tank, and the air outlet end of the replacing water tank is arranged at the top of the tank;
the water inlet and outlet end and the exhaust end are sea ports communicated with external sea water, or the water inlet and outlet end is provided with a water injection and drainage pipeline 3 extending into the sea water, the exhaust end is provided with a ventilation pipeline 2 extending into the sea water, the water injection and drainage pipeline 3 is connected with a valve group III in series, and the ventilation pipeline 2 is connected with a valve group II in series.
In the embodiment, a blowing unit for replacing a water tank is formed by combining a gas generator with a blowing pipeline 1 and a valve group I; the water filling and draining unit for replacing the water tank is formed by a water filling and draining pipeline 3, a ventilation pipeline 2 and valve groups II and III on the water filling and draining pipeline.
In this embodiment, the water injection and drainage pipeline 3 may be connected in series with a water pump for providing water injection and drainage power for smooth water injection and drainage.
The replacement water tank is of a frame structure made of light metal or a structure combining a metal frame and a water bag, and a medium in the water bag is switched between seawater and gas.
The salvaging device further comprises a thruster, an underwater observation unit, an underwater positioning unit and a lifting hook mechanism, and a power supply, distribution and control unit electrically connected with the thruster, the underwater observation unit, the underwater positioning unit and the gas generator; the fishing device is moved horizontally by the thruster, so that the fishing device is suspended above the salvaged facility; the salvaging device is connected with the salvaged facility through the lifting hook mechanism.
In this embodiment, the underwater observation unit mainly includes an underwater camera, an illumination lamp, and the like. The device is used for observing salvaged facilities, surrounding environments and hooking processes by device operators on the water surface ship in the salvaging process;
in this embodiment, the underwater positioning unit mainly includes an acoustic beacon, a depth gauge, an altimeter, and the like, and is used for a device operator on a water surface ship to obtain information such as a position, a depth, an altitude, and the like of the device in the salvage process.
In this embodiment, the power supply and distribution and control unit mainly includes a power supply and distribution module, a device control module, a device driving control module, etc. for receiving power supply and control instructions of the water surface ship, supplying power to and distributing power to the device electric equipment, acquiring device operation parameters, and realizing control of the device.
Still include the manipulator, the manipulator sets up in fishing device's below or side below, links up the hoist and mount with by fishing device with lifting hook mechanism through the manipulator.
In the present embodiment, the air supply hose of the gas generator may be connected to or disconnected from the blow-off line 1 by the provision of a robot.
In this embodiment, the manipulator may be replaced by an ROV carried on the surface vessel, and the manipulator may be operated accordingly.
The device also comprises a guiding winch, and the salvaging device is guided and pulled to the upper side of the salvaged facility through the guiding winch.
In this embodiment, the guiding winch mainly includes devices such as winch, guide cable and lifting hook, if under factors such as ocean current, lift by crane fishing device can't rely on the thruster to be close to or hover in by salvage the facility top, then accessible guiding winch release guide cable, is connected the lifting hook of guide cable with by salvage facility lug through the ROV, then blows off the little replacement water tank and makes the device wholly become slightly positive buoyancy, and guiding winch draws back and draws the device to be salvaged the facility top.
In this embodiment, the guiding winch is not necessarily equipped, and whether it is installed or not depends mainly on whether the thruster has sufficient underwater control capability. Furthermore, since the device is still far from the salvaged facility when using the guide cable, the hooking operation of the guide cable must be performed by means of an ROV.
In this embodiment, the replacement water tank has the following characteristics:
1) The total net volume of the water tank is determined according to the positive buoyancy required to be provided by the salvaging device;
2) The water tank adopts a lightweight structural design, and can adopt light structural materials such as titanium alloy, aluminum alloy or composite materials and the like according to specific requirements, and can also adopt a structural form of combining a metal frame and a soft air bag (water bag);
3) The combination of the number of the replacing water tanks and the net volume of the single water tank is flexibly designed according to the requirement.
In this embodiment, the underwater heavy-load lifting salvaging device may further include other necessary auxiliary components and devices according to actual design requirements, such as an anti-collision structure, a device mounting base structure, and a replacement water tank liquid level monitoring device.
When the underwater heavy-load lifting and salvaging device of the embodiment is used for lifting and salvaging operations, the water surface ship is also required to be provided with corresponding water surface deployment and personnel control equipment, and the functions of deployment of the lifting and salvaging device from the water surface ship to deep sea, recovery of the device after the operation is finished, power supply and control of the device in the operation process and the like are realized. According to the actual design and integration requirements, the water surface laying and personnel control equipment can be classified as a component part of the underwater lifting fishing device.
The application method of the underwater heavy-load hoisting and salvaging device, as shown in fig. 3, comprises the following steps:
the first step: the ROV is distributed through the water surface ship, and the state of the salvaged facilities is observed and estimated;
and a second step of: laying the salvaging device into water through a belt cable by means of a laying system of the water surface ship; in the water inlet process, the seawater is gradually filled into the replacement water tank until the replacement water tank is full, and the salvaging device is gradually submerged under the negative buoyancy state;
and a third step of: after the salvaging device is submerged to a preset depth, the salvaging device is close to and hovers above a salvaged facility by means of the underwater positioning unit and the underwater observation unit and the thruster;
fourth step: the lifting hook mechanism of the salvaging device is connected with a salvaged facility for lifting by means of a water surface ship or a manipulator;
fifth step: the water surface ship controls the gas generator to start, generates high-pressure gas and conveys the high-pressure gas into the replacement water tank, seawater in the replacement water tank is gradually blown off and discharged, the positive buoyancy of the salvage device is gradually increased, and the salvaged facility is pulled to leave the sea bottom to open up and float;
sixth step: in the floating process, the water surface ship synchronously recovers the belt cable until the salvaging device floats to the water surface; in the floating process, the floating speed is adjusted by replacing the adjustment of the sea water quantity in the water tank;
seventh step: and lifting, towing and transferring the facilities to be salvaged close to the water surface to a preset position by the water surface ship.
The underwater heavy-load lifting and fishing device provided by the application is used for lifting and fishing operations, and has the advantages of various aspects:
1) The salvage operation has strong adaptability to sea conditions: by adopting the underwater lifting and salvaging device to implement deep sea lifting and salvaging operation, the water surface ship can operate under harsher sea conditions only by being provided with the laying winch with the tension protection function, and the water surface heavy load lifting by utilizing the heave compensation crane can generally operate under the sea conditions of no more than level 4.
2) Salvage weight and operation depth possess the expansion ability: the salvage weight and the working depth of the water surface lifting salvage by using the ocean engineering ship are limited by the design capacity of the ocean engineering ship crane. According to the underwater lifting salvaging device, the salvaging depth can be increased by increasing the total amount of the medicaments of the gas generator under the condition that the volume of the replacement water tank is unchanged; the salvage weight of a single device can be improved by increasing the volume of the replacement water tank and the total medicament amount, or a plurality of lifting salvage devices are adopted to salvage the same facility (the plurality of lifting salvage devices are connected with the salvage facility through a special lifting tool), so that the salvage weight is greatly improved.
3) The operation safety is higher: the marine engineering ship is used for lifting and salvaging the deep sea large-tonnage facilities, lifting cables with the length of hundreds to thousands of meters are required to be released, the problem of complex water surface-underwater rigid-flexible multi-body coupling dynamics exists, and the salvaging operation risk is high. The underwater lifting salvaging device can avoid the problem.
4) Rescue salvages timely: large ocean engineering ships are expensive to rent and have a small quantity, and cannot guarantee the large ocean engineering ships on the water surface in real time in the operation process of a deep sea manned platform. Therefore, once the task of emergency lifting and rescue occurs in the operation process of the deep sea manned platform, a great amount of standby navigation, ferry and operation preparation time are consumed for temporarily calling the ocean engineering ship meeting the requirements, and precious rescue time can be missed. The underwater lifting and salvaging device can be carried by a water mother ship in real time in the operation process of a deep sea manned platform, and can be immediately put into an operation task once accidents occur, so that rescue is more timely.
5) The operation cost is lower: the large-scale marine engineering vessel is rented to implement deep sea hoisting salvage operation, and the renting cost of the whole working period is very high. The arrangement of the underwater lifting fishing device has lower requirements on the water surface ship, and can obviously reduce the ship renting cost.
The underwater heavy-load lifting salvaging device is matched with a water surface ship to carry out salvaging operation, has the characteristics of timely response, flexible and convenient use, is less influenced by operation sea conditions, and has higher operation safety.
The above description is intended to illustrate the application and not to limit it, the scope of which is defined by the claims, and any modifications can be made within the scope of the application.
Claims (2)
1. An underwater heavy load lifts by crane fishing device, its characterized in that: the device comprises a replacing water tank, wherein the replacing water tank is a sealed box body, at least three ports are formed in the replacing water tank, one port is an air inlet end connected with a gas generator, the other port is an water inlet end communicated with external seawater, and the other port is an air outlet end communicated with the external seawater; the filling medium in the replacing water tank is switched between seawater and gas, the whole salvaging device is in a negative buoyancy state when the replacing water tank is filled with seawater, and the whole salvaging device is in a positive buoyancy state when the replacing water tank is filled with gas;
the air inlet end of the replacing water tank is connected with the output end of the gas generator through a blowing-off pipeline (1), and a valve group I for switching on and off of the pipeline is connected in series on the blowing-off pipeline (1); the gas generator is filled with a medicament, and the medicament reacts to generate gas which is insoluble in seawater after the gas generator is started and is conveyed into the substitution water tank;
the water inlet and outlet ends of the replacing water tank are arranged at the bottom of the tank, and the air outlet end of the replacing water tank is arranged at the top of the tank;
the water inlet end and the water outlet end are sea ports communicated with external sea water, or the water inlet end and the water outlet end are provided with a water injection and drainage pipeline (3) extending into the sea water, the air outlet end is provided with a ventilation pipeline (2) extending into the sea water, the water injection and drainage pipeline (3) is connected with a valve group III in series, and the ventilation pipeline (2) is connected with a valve group II in series;
the salvaging device further comprises a thruster, an underwater observation unit, an underwater positioning unit and a lifting hook mechanism, and a power supply, distribution and control unit electrically connected with the thruster, the underwater observation unit, the underwater positioning unit and the gas generator; the fishing device is moved horizontally by the thruster, so that the fishing device is suspended above the salvaged facility; the salvaging device is connected with a salvaged facility through a lifting hook mechanism;
the buoyancy material is arranged to balance the gravity and buoyancy of the salvaging device, and when the replacement water tank is filled with seawater, the salvaging device is in a slightly negative buoyancy state as a whole;
the gas generator is fixedly arranged on the salvaging device and is fixedly connected with the blowing-off pipeline (1);
or the gas generator is an independent module separated from the salvaging device and is connected with the blowing-off pipeline (1) through a gas supply hose;
the replacing water tank is of a frame structure made of light metal or a structure combining a metal frame and a water bag, and a medium in the water bag is switched between seawater and gas;
the device also comprises a guide winch, wherein the guide winch guides and pulls the salvaging device to the upper part of the salvaged facility;
the application method of the underwater heavy-load hoisting salvaging device comprises the following steps:
the ROV is distributed through the water surface ship, and the state of the salvaged facilities is observed and estimated;
laying the salvaging device into water through a belt cable by means of a laying system of the water surface ship; in the water inlet process, the seawater is gradually filled into the replacement water tank until the replacement water tank is full, and the salvaging device is gradually submerged under the negative buoyancy state;
after the salvaging device is submerged to a preset depth, the salvaging device is close to and hovers above a salvaged facility by means of the underwater positioning unit and the underwater observation unit and the thruster;
the lifting hook mechanism of the salvaging device is connected with a salvaged facility for lifting by means of a water surface ship or a manipulator;
the water surface ship controls the gas generator to start, generates high-pressure gas and conveys the high-pressure gas into the replacement water tank, seawater in the replacement water tank is gradually blown off and discharged, the positive buoyancy of the salvage device is gradually increased, and the salvaged facility is pulled to leave the sea bottom to open up and float;
in the floating process, the water surface ship synchronously recovers the belt cable until the salvaging device floats to the water surface; in the floating process, the floating speed is adjusted by replacing the adjustment of the sea water quantity in the water tank;
and lifting, towing and transferring the facilities to be salvaged close to the water surface to a preset position by the water surface ship.
2. The underwater heavy-duty lifting fishing device as claimed in claim 1, wherein: still include the manipulator, the manipulator sets up in fishing device's below or side below, links up the hoist and mount with by fishing device with lifting hook mechanism through the manipulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210520349.2A CN114771771B (en) | 2022-05-13 | 2022-05-13 | Underwater heavy-load lifting and salvaging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210520349.2A CN114771771B (en) | 2022-05-13 | 2022-05-13 | Underwater heavy-load lifting and salvaging device |
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| Publication Number | Publication Date |
|---|---|
| CN114771771A CN114771771A (en) | 2022-07-22 |
| CN114771771B true CN114771771B (en) | 2023-09-15 |
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| CN202210520349.2A Active CN114771771B (en) | 2022-05-13 | 2022-05-13 | Underwater heavy-load lifting and salvaging device |
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| CN112208717A (en) * | 2020-11-11 | 2021-01-12 | 上海戍海机电科技有限公司 | Multifunctional intelligent salvage system on sea |
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2022
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203975178U (en) * | 2014-06-17 | 2014-12-03 | 哈尔滨工程大学 | Underwater salvage device based on nano metal powder |
| CN204432974U (en) * | 2014-12-17 | 2015-07-01 | 西安鸿德节能科技有限公司 | Marine emergency management and rescue and salvaging airbag apparatus |
| CN109263833A (en) * | 2018-09-14 | 2019-01-25 | 李颖 | A kind of raising of a wreck and haul system based on trend active force |
| CN109969355A (en) * | 2019-03-07 | 2019-07-05 | 深圳基原中正工程建设有限公司 | Long-range control deep ocean work delivers caisson |
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|---|---|
| CN114771771A (en) | 2022-07-22 |
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