CN111532375B - Off-boat towing diving system for yacht - Google Patents
Off-boat towing diving system for yacht Download PDFInfo
- Publication number
- CN111532375B CN111532375B CN202010517423.6A CN202010517423A CN111532375B CN 111532375 B CN111532375 B CN 111532375B CN 202010517423 A CN202010517423 A CN 202010517423A CN 111532375 B CN111532375 B CN 111532375B
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- CN
- China
- Prior art keywords
- cushion
- backrest
- air bag
- diving
- supporting plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B17/00—Vessels parts, details, or accessories, not otherwise provided for
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B34/00—Vessels specially adapted for water sports or leisure; Body-supporting devices specially adapted for water sports or leisure
-
- 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
- B63C11/00—Equipment for dwelling or working underwater; Means for searching for underwater objects
- B63C11/02—Divers' equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B17/00—Vessels parts, details, or accessories, not otherwise provided for
- B63B2017/0054—Rests or supports for movable ship-borne equipment
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Accommodation For Nursing Or Treatment Tables (AREA)
- Invalid Beds And Related Equipment (AREA)
Abstract
The invention provides a submarine-leaving towing diving system for a yacht, which comprises a keel block, wherein a diving water tank is arranged in the center of the top of the keel block, an air bag bottom baffle is fixed at the top of the keel block outside the diving water tank, the outer end of the air bag bottom baffle is bent upwards to form an air bag side baffle, the air bag bottom baffle is fixed with an air bag, a supporting plate is arranged at the top of the diving water tank, a power chamber is reserved between the outer side wall of the supporting plate and the inner side wall of the air bag, the top of the supporting plate and the top of the air bag side baffle are fastened and fixed through a cover plate, a stand column is fixed at the top of the cover plate, a lifting assembly is arranged in the stand column, a cushion guide rail is fixed at the edge of the top of the cover plate, and a cushion assembly is movably arranged on the cushion guide rail. The scheme integrates diving and dragging functions, divers do not need professional training (only need to wear aerobic gas equipment), and the diving device is reasonable in structure and good in using effect.
Description
Technical Field
The invention relates to the technical field of yachts, in particular to an off-board towing diving system for yachts.
Background
The yacht integrates functions of navigation, sports, entertainment, leisure and the like, and meets the living needs of individuals and families. In the running process of the traditional yacht, people can only enjoy the wind and light on the water surface on the yacht. The diving is carried by a person carrying the counterweight and the oxygen equipment, so that the person can dive with a certain danger, and professional training is needed for diving.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides the off-boat towing diving system which is reasonable in structure and good in use effect and is used for yachts.
In order to achieve the above purpose, the technical scheme provided by the invention is as follows: the utility model provides a submarine drags a submarine to walk dive system from ship that yacht was used, it is including the keel block, the keel block top center department installs the diving water tank in the keel block top outside, the keel block top in the diving water tank outside is fixed with gasbag bottom baffle, gasbag bottom baffle outer end upwards bends and forms gasbag side shield, gasbag bottom baffle is fixed with the gasbag, the gasbag overlook is square frame shape, diving water tank top is equipped with vertical ascending backup pad, reserve there is the power room between backup pad lateral wall and the gasbag inside wall, it is fixed through the apron lock between backup pad top and the gasbag side shield top, the apron top is fixed with the stand, install lifting unit in the stand, the ceiling is installed at lifting unit top, apron top edge is fixed with the cushion guide, movable mounting has the cushion subassembly on the cushion guide.
The lifting assembly comprises a lifting column, wherein the upright column and the lifting column are made of hollow square tubes or round tubes, the lower portion of the lifting column is movably inserted into the upright column, the top of the lifting column upwards penetrates through the upright column to be connected with a ceiling, a screw motor is installed at the bottom of an inner cavity of the upright column, a screw of the screw motor is upwards inserted into the lifting column, a lifting column bottom plate is fixed at the bottom of the lifting column, the bottom of the lifting column is meshed with the screw of the screw motor, sealing strips are arranged at the edge of the bottom of the ceiling, and the ceiling and the side plates are made of transparent materials.
The air bag is connected with an air pump, the air pump is fixed on an air bag bottom baffle of the power chamber, an air supply pipe of the air pump is connected with the air bag, and a storage battery and a water inlet pump are arranged on the air bag bottom baffle at one side of the air pump; water inlet pump Water supply pipe Water supply pipe of water inlet pump the inner cavity of the diving water tank is connected, a drainage pump is arranged in the submerged water tank, an outlet of the drainage pump is connected with the outside, and the storage battery supplies power for the air pump, the water inlet pump, the screw motor and the drainage pump; an oxygen tank is arranged in the power chamber and is fixed on an air bag bottom baffle plate of the power chamber through a binding belt, and an outlet of an air supply pipe of the oxygen tank is connected with an oxygen valve on the supporting plate.
The seat cushion assembly is two groups and is respectively positioned at two ends of the seat cushion guide rail, the seat cushion guide rails are two, the seat cushion guide rails are mutually parallel to be arranged at the edges of the two opposite cover plates, the end parts of the seat cushion guide rails are fixedly connected with the upright posts, the upright posts at one end of the seat cushion guide rails are vertically fixed with backrest guide rails, and the backrest guide rails and the seat cushion guide rails are in an L shape in side view.
The cushion assembly comprises a cushion supporting plate and a backrest supporting plate, wherein the cushion supporting plate is movably arranged between two cushion guide rails, the vertical section of the cushion guide rails is C-shaped, the groove bodies of the two cushion guide rails are opposite, two end parts of the two ends of the cushion supporting plate are provided with limiting supporting wheels, each end of each limiting supporting wheel is two, the limiting supporting wheels after installation are positioned in the groove bodies, the cushion supporting plate on one side of the backrest guide rail is movably hinged with the backrest supporting plate, the backrest limiting wheels are arranged at the top of the rear side of the backrest supporting plate, the backrest limiting wheels are limited by the backrest guide rails, the backrest guide rails are made of hollow square tubes, limiting grooves which penetrate through inside and outside are formed in the backrest guide rails on one side of the backrest supporting plate, the backrest supporting plate top is provided with a concave hinge groove, one end of each hinge plate is hinged with the backrest supporting plate in the hinge groove, the other end of each hinge plate penetrates through the limiting groove and is connected with the backrest limiting wheels, the top of the backrest supporting plate is provided with a limiting piece, the outer end of the screw rod is an adjusting end, and the inner end of the screw rod penetrates through the surface of the backrest guide rail to be contacted with the backrest guide rail.
After the scheme is adopted, the air bag bottom baffle and the air bag side baffle protect the air bag, the air bag is prevented from being damaged due to external impact, the storage battery supplies power to all electric components in a conventional mode, the cushion support plate and the backrest support plate are fixed with cushions, when the seat is normally used, the backrest support plate is vertical to the rear side of the cushion support plate, the inner end of the limiting piece is abutted against the surface of the backrest guide rail, the backrest support plate is limited, when the backrest angle needs to be regulated, the limiting piece is loosened, the backrest support plate is pressed down (or the cushion support plate is moved towards the center direction of a cabin), the cushion support plate moves towards the center of the cabin along the cushion guide rail, the backrest support plate is inclined, so that the angle of the backrest support plate is regulated, when the backrest support plate descends to the bottom of the backrest guide rail, the surface of the backrest support plate is flush with the surface of the cushion support plate, two cushion support plates lean against the cage relatively and contact and form the bed of lying, when the towboat floats on the surface of water and uses, inflate the gasbag through the air pump, the gasbag provides buoyancy for the dive, thereby make the dive float on the surface of water, the lifting column stretches out, the ceiling is located the towboat top, during the dive, the air cock gassing (the air cock is connected for conventional mode with the gasbag), the water injection in the water tank is gone into to the intake pump simultaneously, thereby make the dive, the screw motor rotates and drives the lifting column and descends, thereby drive the ceiling in step and descend, the sealing strip of ceiling bottom is finally pressed at the curb plate, the stand top forms sealedly, prevent to advance water in the ship, oxygen pitcher carries out the oxygen suppliment to the dive inside when diving, this scheme is with dive and drags the function set in an organic whole, diver need not professional training (only need wear aerobic equipment), and is rational in infrastructure, excellent in use effect.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is a schematic view of a lifting assembly according to the present invention.
Fig. 3 is a schematic view of a side plate structure of the present invention.
Fig. 4 is a schematic view of a seat cushion assembly of the present invention.
Fig. 5 is a schematic view of the back rest tray of the present invention laid flat.
Fig. 6 is a schematic top view of the backrest rail of the present invention.
Detailed Description
The invention is further described below with reference to all drawings, in which preferred embodiments of the invention are: referring to fig. 1 to 6, the off-boat towing diving system for a yacht according to the present embodiment includes a keel block 1, a diving tank 4 is installed at the center of the top of the keel block 1, an airbag bottom baffle 2 is fixed at the top of the keel block 1 outside the diving tank 4, the outer end of the airbag bottom baffle 2 is bent upwards to form an airbag side baffle 3, the airbag bottom baffle 2 is fixed with an airbag 5, the airbag 5 is square in a overlooking manner, a vertical upward support plate 10 is arranged at the top of the diving tank 4, a power chamber is reserved between the outer side wall of the support plate 10 and the inner side wall of the airbag 5, the top of the support plate 10 is fastened and fixed with the top of the airbag side baffle 3 through a cover plate 11, a stand column 30 is fixed at the top of the cover plate 11, a lifting assembly is installed in the stand column 30, a ceiling 34 is installed at the top of the lifting assembly, a cushion guide rail 22 is fixed at the edge of the top of the cover plate 11, and a cushion assembly is movably installed on the cushion guide rail 22.
The lifting assembly comprises a lifting column 33, wherein the upright column 30 and the lifting column 33 are made of hollow square tubes or round tubes, the lower portion of the lifting column 33 is movably inserted into the upright column 30, the top of the lifting column 33 upwards penetrates through the upright column 30 to be connected with a ceiling 34, a screw motor 31 is installed at the bottom of an inner cavity of the upright column 30, a screw of the screw motor 31 is upwards inserted into the lifting column 33, a lifting column bottom plate is fixed at the bottom of the lifting column 33, the bottom of the lifting column is meshed with the screw of the screw motor 31, sealing strips 35 are arranged at the edge of the bottom of the ceiling 34, and the ceiling 34 and side plates 32 are made of transparent materials.
The air bag 5 is connected with the air pump 6, the air pump 6 is fixed on the air bag bottom baffle plate 2 of the power chamber, the air supply pipe of the air pump 6 is connected with the air bag 5, and the air bag bottom baffle plate 2 at one side of the air pump 6 is provided with the storage battery 7 and the water inlet pump 8; the water inlet pipe of the water inlet pump 8 passes through the air bag bottom baffle plate 2 and the boat seat 1 to be connected with the outside, the water supply pipe of the water inlet pump 8 is connected with the inner cavity of the diving water tank 4, a drainage pump is arranged in the diving water tank 4, the outlet of the drainage pump is connected with the outside, and the storage battery 7 supplies power for the air pump 6, the water inlet pump 8, the screw motor 31 and the drainage pump; an oxygen tank 9 is arranged in the power chamber, the oxygen tank 9 is fixed on the air bag bottom baffle 2 of the power chamber through a binding belt, and an outlet of an air supply pipe of the oxygen tank 9 is connected with an oxygen valve on a supporting plate 10.
The cushion components are two groups, are respectively positioned at two ends of the cushion guide rail 22, the cushion guide rails 22 are two, are mutually parallel to be arranged at the edges of the two opposite cover plates 11, the end parts of the cushion guide rails 22 are fixedly connected with the upright posts 30, the upright posts 30 at one end of the cushion guide rails 22 are vertically fixed with the backrest guide rails 26, and the backrest guide rails 26 and the cushion guide rails 22 are L-shaped in side view.
The cushion assembly comprises a cushion supporting plate 23 and a backrest supporting plate 25, wherein the cushion supporting plate 23 is movably arranged between two cushion guide rails 22, the vertical section of the cushion guide rails 22 is C-shaped, grooves of the two cushion guide rails 22 are opposite, limiting supporting wheels 24 are arranged at the two ends of the cushion supporting plate 23, two limiting supporting wheels 24 at each end are arranged in the grooves, the cushion supporting plate 24 after installation is supported by the corresponding cushion guide rails 22, the backrest supporting plate 25 is movably hinged on the cushion supporting plate 23 at one side of the backrest guide rail 26, a backrest limiting wheel 27 is arranged at the top of the rear side of the backrest supporting plate 25, the backrest limiting wheel 27 is limited by the backrest guide rail 26, the backrest guide rail 26 is made of a hollow square tube, a limiting groove 29 penetrating through the inside and outside is formed in the backrest guide rail 26 at one side of the backrest supporting plate 25, the backrest limiting wheel 27 is arranged in the backrest guide rail 26, a concave hinging groove is formed in the top of the backrest supporting plate 25, one end of the hinging plate is hinged with the backrest supporting plate 25 through a hinging shaft, the other end of the hinging plate 20 penetrates through the limiting groove 29 and is connected with the limiting wheels 27, a limiting piece 28 is arranged at the top of the backrest 25, the inner end 28 is in contact with the surface of the backrest guide rail 25, and the inner end is the inner end of the backrest guide rail 26 is in contact with the screw rod.
After the scheme is adopted, the boat seat is connected through the rope, the yacht drags and walks, the air bag bottom baffle and the air bag side baffle protect the air bag, the air bag is prevented from being damaged due to external impact, the storage battery supplies power to all electric components in a conventional mode, the cushion support plate and the surface of the backrest support plate are both fixed with cushions, when the seat is normally used, the backrest support plate is vertical to the rear side of the cushion support plate, the inner end of the limiting piece is abutted against the surface of the backrest guide rail, the backrest support plate is limited, when the backrest angle needs to be regulated, the limiting piece is loosened, the backrest support plate is pressed downwards (or the cushion support plate is moved towards the center direction of the cabin), the cushion support plate moves towards the center of the cabin along the cushion guide rail, the backrest support plate is inclined, thereby regulating the angle of the backrest support plate is carried out, when the backrest support plate descends to the bottom of the backrest guide rail, the surface of the backrest support plate is flush with the surface of the cushion support plate, when the towing boat floats on the water surface, the air bags are inflated through the air pump, the air bags provide buoyancy for the diving device, so that the diving device floats on the water surface, the lifting columns extend out, the ceiling is positioned above the towing boat, the air nozzles are deflated (the air nozzles are connected with the air bags in a conventional mode), meanwhile, the water inlet pump is used for injecting water into the water tank, so that the diving device is submerged, the screw motor rotates to drive the lifting columns to descend, the ceiling is driven to descend synchronously, the sealing strips at the bottom of the ceiling are finally pressed on the side plates and the tops of the columns to form sealing, water is prevented from entering the boat, oxygen tanks supply oxygen to the inside of the diving device during diving, the embodiment integrates diving and towing functions, diving personnel do not need special training (only need to wear aerobic gas equipment), and the structure is reasonable, the use effect is good.
The above-mentioned embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, so that all changes made in the shape and principles of the present invention are covered by the scope of the present invention.
Claims (3)
1. The utility model provides a from ship drags line diving system that yacht was used, its characterized in that includes keel block (1): the center of the top of the keel block (1) is provided with a diving water tank (4), the top of the keel block (1) outside the diving water tank (4) is fixedly provided with an air bag bottom baffle (2), the outer end of the air bag bottom baffle (2) is upwards bent to form an air bag lateral baffle (3), the air bag bottom baffle (2) is fixedly provided with an air bag (5), the top of the diving water tank (4) is in a square frame shape when overlooked, a power chamber is reserved between the outer side wall of the support plate (10) and the inner side wall of the air bag (5), the top of the support plate (10) is fixedly buckled with the top of the air bag lateral baffle (3) through a cover plate (11), the top of the cover plate (11) is fixedly provided with a stand column (30), the stand column (30) is internally provided with a lifting assembly, the top of the lifting assembly is provided with a ceiling (34), and the edge of the top of the cover plate (11) is fixedly provided with a cushion guide rail (22), and the cushion assembly is movably arranged on the cushion guide rail (22).
The lifting assembly comprises a lifting column (33), wherein the upright column (30) and the lifting column (33) are both made of hollow square tubes or round tubes, the lower part of the lifting column (33) is movably inserted into the upright column (30), the top of the lifting column (33) upwards passes through the upright column (30) to be connected with a ceiling (34), a screw motor (31) is arranged at the bottom of an inner cavity of the upright column (30), a screw of the screw motor (31) is upwards inserted into the lifting column (33), a lifting column bottom plate is fixed at the bottom of the lifting column (33), the bottom of the lifting column is meshed with the screw of the screw motor (31), a sealing strip (35) is arranged at the edge of the bottom of the ceiling (34), and the ceiling (34) and the side plates (32) are both made of transparent materials;
The two groups of cushion components are respectively positioned at two ends of the cushion guide rail (22), the two cushion guide rails (22) are arranged at the edges of the two opposite cover plates (11) in parallel, the end parts of the cushion guide rails (22) are fixedly connected with the upright posts (30), the upright posts (30) at one end of the cushion guide rails (22) are vertically fixed with the backrest guide rails (26), and the backrest guide rails (26) and the cushion guide rails (22) are in an L shape in side view;
after the system is adopted, when diving, the air tap of the air sac is deflated, and meanwhile, the water inlet pump is used for injecting water into the water tank, so that the diving system is submerged, the screw motor is rotated to drive the lifting column to descend, the ceiling is synchronously driven to descend, and the sealing strip at the bottom of the ceiling is finally pressed on the side plate and the top of the upright post to form a seal, so that water inflow in the boat is prevented.
2. An off-board towed submersible system for a yacht according to claim 1, wherein: the air bag (5) is connected with the air pump (6), the air pump (6) is fixed on the air bag bottom baffle (2) of the power chamber, an air supply pipe of the air pump (6) is connected with the air bag (5), and a storage battery (7) and a water inlet pump (8) are arranged on the air bag bottom baffle (2) at one side of the air pump (6); the water inlet pipe of the water inlet pump (8) penetrates through the air bag bottom baffle plate (2) and the boat seat (1) to be connected with the outside, the water supply pipe of the water inlet pump (8) is connected with the inner cavity of the diving water tank (4), a drainage pump is arranged in the diving water tank (4), the outlet of the drainage pump is connected with the outside, and the storage battery (7) supplies power for the air pump (6), the water inlet pump (8), the screw motor (31) and the drainage pump; an oxygen tank (9) is arranged in the power chamber, the oxygen tank (9) is fixed on an air bag bottom baffle (2) of the power chamber through a binding belt, and an outlet of an air supply pipe of the oxygen tank (9) is connected with an oxygen valve on a supporting plate (10).
3. An off-board towed submersible system for a yacht according to claim 1, wherein: the cushion component comprises a cushion supporting plate (23) and a backrest supporting plate (25), wherein the cushion supporting plate (23) is movably arranged between two cushion guide rails (22), the vertical section of the cushion guide rails (22) is C-shaped, the groove bodies of the two cushion guide rails (22) are opposite, the two end parts of the two ends of the cushion supporting plate (23) are respectively provided with a limiting supporting wheel (24), each end of the limiting supporting wheels (24) is two, the limiting supporting wheels (24) after installation are positioned in the groove bodies, the cushion supporting plate (23) on one side of the backrest guide rail (26) is movably hinged with the backrest supporting plate (25), the top of the rear side of the backrest supporting plate (25) is provided with a backrest limiting wheel (27), the backrest limiting wheel (27) is limited by the backrest guide rail (26), the backrest guide rail (26) is made of a hollow square tube, the backrest guide rail (26) on one side opposite to the backrest supporting plate (25) is provided with limiting grooves (29) penetrating inwards and outwards, the backrest limiting wheels (27) are positioned in the backrest guide rail (26), the top of the cushion supporting plate (25) is provided with a lower hinge plate (28) and the hinge plate (28) is hinged with the limiting groove (28) which penetrates through one end of the hinge plate (25), the outer end of the inner end of the screw rod is an adjusting end, and the inner end of the screw rod passes through the backrest supporting plate (25) to be contacted with the surface of the backrest guide rail (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010517423.6A CN111532375B (en) | 2020-06-09 | 2020-06-09 | Off-boat towing diving system for yacht |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010517423.6A CN111532375B (en) | 2020-06-09 | 2020-06-09 | Off-boat towing diving system for yacht |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111532375A CN111532375A (en) | 2020-08-14 |
| CN111532375B true CN111532375B (en) | 2024-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010517423.6A Active CN111532375B (en) | 2020-06-09 | 2020-06-09 | Off-boat towing diving system for yacht |
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| Country | Link |
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| CN (1) | CN111532375B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212373601U (en) * | 2020-06-09 | 2021-01-19 | 湖南海荃游艇有限公司 | Multifunctional diving device for yacht |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2792941Y (en) * | 2004-04-30 | 2006-07-05 | 韩国防 | Flat sliding motorboat with double-float on cabin |
| NZ583094A (en) * | 2007-07-06 | 2012-09-28 | Marion Hyper Submersible Powerboat Design Llc | General purpose submarine having high speed surface capability and including a variable displacement fuel cell |
| CN106800077A (en) * | 2017-01-11 | 2017-06-06 | 李玉强 | Ship inclines automatic emergency sink preventing apparatus |
| CN107187562A (en) * | 2017-07-07 | 2017-09-22 | 钱建新 | Ship anti-turn over and sink safety device and ship |
| CN107512369A (en) * | 2017-09-13 | 2017-12-26 | 宿松县佳宜装饰有限公司 | A kind of Food Outlets waterborne |
| CN207173915U (en) * | 2017-09-15 | 2018-04-03 | 康资国 | One kind is anti-to be turned over, anti-wreck |
| CN207826495U (en) * | 2018-01-26 | 2018-09-07 | 陈毅平 | It is a kind of can overturning-preventing ship |
| CN209290645U (en) * | 2018-10-31 | 2019-08-23 | 中国船舶重工集团公司第七一九研究所 | A kind of deformable autonomous underwater vehicle |
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2020
- 2020-06-09 CN CN202010517423.6A patent/CN111532375B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212373601U (en) * | 2020-06-09 | 2021-01-19 | 湖南海荃游艇有限公司 | Multifunctional diving device for yacht |
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| CN111532375A (en) | 2020-08-14 |
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