CN113815826A - Screw propeller device capable of reducing biological following and preventing winding - Google Patents
Screw propeller device capable of reducing biological following and preventing winding Download PDFInfo
- Publication number
- CN113815826A CN113815826A CN202110285892.4A CN202110285892A CN113815826A CN 113815826 A CN113815826 A CN 113815826A CN 202110285892 A CN202110285892 A CN 202110285892A CN 113815826 A CN113815826 A CN 113815826A
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- wall
- push
- propeller device
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- mounting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
- B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
- B63H5/16—Arrangements on vessels of propulsion elements directly acting on water of propellers characterised by being mounted in recesses; with stationary water-guiding elements; Means to prevent fouling of the propeller, e.g. guards, cages or screens
- B63H5/165—Propeller guards, line cutters or other means for protecting propellers or rudders
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Farming Of Fish And Shellfish (AREA)
Abstract
The invention relates to the technical field of propulsion devices, and discloses a propeller device capable of reducing biological following and preventing winding, which comprises an installation frame, wherein a surrounding cylinder is fixedly installed on the lower end surface of the installation frame, rotating motors are fixedly installed on the inner wall of the surrounding cylinder in a bilateral symmetry manner, a power shaft is installed on the rotating motors in a power mode, a rotating installation plate is fixedly installed on the end surface of the outer side of the power shaft, a tightening cylinder is fixedly installed on the lower side of the rotating installation plate, and a shifting installation block is installed on the tightening cylinder in a lifting mode; according to the propeller device capable of reducing biological following and preventing winding, due to the arrangement of the deformation protection system, the driving closing device provided with the double-layer protection arc cover can close the propeller surrounding cylinder in a combined manner in the propelling movement process, so that winding of small fishes is greatly reduced, and accidents caused by the fact that other fishes around a ship follow foraging are reduced.
Description
Technical Field
The invention relates to the technical field of propulsion devices, in particular to a propeller device capable of reducing biological following and preventing winding.
Background
With the development of science and technology, boats and ships technique is more and more mature, people can be free at the operation on the sea, now, almost all large-scale boats all need the screw to carry out the propulsion work, but the screw is very big to marine life threat, every time the boat is propelling the removal, the screw can be drawn into a large amount of sea water, some fishes also are drawn into the damage simultaneously, blood can attract many large-scale fishes, consequently, often discover the scar that some large-scale fishes caused along with the screw on one's body, and the screw also receives great power to large-scale fishes when causing the injury, and then make the screw deformation or ageing, and avoid large-scale fishes to follow through the sonar system, discover that it is more serious, make the fishes who leans on sonar system identification direction lose the direction, take place the striking, towards the circumstances such as beach.
Disclosure of Invention
The object of the present invention is to provide a propeller device that reduces the biological follow-up and prevents the entanglement, overcoming the above-mentioned drawbacks of the prior art.
The invention is realized by the following technical scheme.
The invention relates to a propeller device capable of reducing biological following and preventing rolling-in, which comprises a mounting frame, wherein a surrounding cylinder is fixedly arranged on the lower end face of the mounting frame, a rotating motor is fixedly arranged on the inner wall of the surrounding cylinder in a bilateral symmetry manner, a power shaft is dynamically arranged on the rotating motor, a rotating mounting plate is fixedly arranged on the end face of the outer side of the power shaft, a tightening cylinder is fixedly arranged on the lower side of the rotating mounting plate, a toggle mounting block is arranged on the tightening cylinder in a lifting manner, a closed mounting ring is rotatably arranged on the inner wall of the toggle mounting block, an outward arc hole cover is arranged on the closed mounting ring in a lifting manner and used for filtering and reducing the rolling-in of fishes and other substances, a functional arc plate is fixedly arranged on the upper end face of the closed mounting ring, a closed hole plugging device is arranged in a spherical array in the functional arc plate, and comprises a hole sleeve, the hole sleeve is internally and fixedly provided with a rotary connecting block, the rotary connecting block is rotatably provided with a rotary circulating plate, the rotary circulating plate is used for rotary filtering to reduce the entrainment probability, the upper and lower symmetrical parts of the inner wall of the hole sleeve are fixedly provided with two control panels, the inner wall of each control panel is fixedly provided with a control electromagnet, the control electromagnet is used for controlling the fixation and relaxation of the rotary circulating plate, the inner wall of each functional arc plate is fixedly connected with a drainage cylinder, the inner side of the drainage cylinder is communicated with a reaming drainage sleeve, the reaming drainage sleeve is used for flaring drainage, the tail end of the drainage cylinder is connected with a communicating ring, the communicating ring is used for matching communication, the inner wall of the enclosure cylinder is fixedly provided with an outlet pipe, the outlet pipe is fixedly connected with a matching communication sleeve, the matching communication sleeve is used for laminating communication, the tail end of the outlet pipe is fixedly communicated with an outflow cylinder, and the outflow cylinder is fixedly connected with a fixed block, the fixing block is fixedly arranged on the inner wall of the surrounding cylinder, the inner wall of the surrounding cylinder is slidably provided with a push-out arc ring, and the push-out arc ring is used for pushing away adsorbed fishes with relatively large sizes.
According to the technical scheme, an action cavity is formed in the inner wall of the closed mounting ring, an action electromagnet is fixedly mounted in the action cavity, an action sliding ring is slidably mounted in the action cavity, a supporting spring is fixedly mounted on the lower end face of the action sliding ring and used for supporting and resetting, an action connecting cylinder is fixedly mounted on the lower end face of the action sliding ring, and the outward arc hole cover is fixedly mounted at the tail end of the action connecting cylinder.
According to the technical scheme, the inner wall of the surrounding cylinder is provided with two push-out cavities in an up-down symmetrical mode, a push-out slide rod is slidably mounted in the push-out cavities, a push-out spring is fixedly mounted on the end face of the left side of the push-out slide rod, the tail end of the push-out slide rod is fixedly mounted with a push-out arc ring, a push-out electromagnet is fixedly mounted on the inner wall of the push-out cavity on the upper side, and the push-out electromagnet is used for pushing out kinetic energy.
According to the technical scheme, the surrounding cylinder is fixedly provided with a propelling power shaft, the propelling power shaft is provided with a propeller blade in a dynamic mode, and the propeller blade is used for propelling ships.
According to the technical scheme, two toggle motors are symmetrically and fixedly installed in the toggle installation block, and the toggle motor shafts are fixedly connected to the outer wall of the closed installation ring.
According to the technical scheme, a telescopic cavity is formed in the tightening cylinder, a tightening telescopic rod is fixedly mounted in the telescopic cavity, a lifting connecting block is fixedly mounted at the tail end of the tightening telescopic rod, and the end face of the lower side of the lifting connecting block is fixedly mounted with the stirring mounting block.
The invention has the beneficial effects that:
according to the propeller device capable of reducing the organism following and preventing the small fishes from being involved, due to the arrangement of the deformation protection system, in the propelling and moving process, the driving and closing device provided with the double-layer protection arc cover can close the propeller surrounding cylinder in a fitting manner, so that the small fishes are greatly reduced in involvement, further accidents caused by the fact that other fishes around a ship follow foraging are reduced, simultaneously after the closing driving function is started, the involvement of other marine floating plants such as seaweed is reduced, further the small fishes are prevented from following the feed, the situation that the fishes of various body types in the sea follow is greatly reduced, the harm to marine organisms is reduced, and due to the reduction of the impurity involvement, the beneficial effects of improving the working condition of the propeller and reducing the maintenance frequency can be achieved;
the propeller device capable of reducing biological following and preventing the entanglement can avoid the entanglement of fishes with body types larger than meshes by arranging the double-layer protective arc cover on the outer arc cover, thereby reducing the influence on the activity of the fishes, and after the fishes and seaweed organisms smaller than the meshes enter, the fishes and the seaweed organisms are treated by the inner arc cover;
according to the propeller device capable of reducing biological following and preventing the fish from being involved, the external arc cover and the push-out arc ring are arranged, the external arc cover has a function of pushing and shaking, so that when fish are adsorbed on the surface of the arc cover, the fish can escape from adsorption force in a pushing and shaking mode, damage to the fish is reduced, meanwhile, the push-out arc ring can push the fish away from the external cover net in cooperation with the auxiliary action of the push-out arc ring when the fish is large in body shape and shaking force is insufficient, the problem that the work efficiency of the propeller is reduced and the fish is damaged due to the fact that the fish are adsorbed is solved, meanwhile, the propeller device can push and shake by the external arc cover, blocking objects mixed in the net hole can be effectively removed, and the propeller can work for a long time.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic left side view of the structure of FIG. 1;
FIG. 3 is an enlarged view of the internal arc shroud 28 of FIG. 1;
FIG. 4 is an enlarged schematic view of the obturator instrument 33 of FIG. 3;
FIG. 5 is an enlarged schematic view of A in FIG. 1;
fig. 6 is an enlarged structural diagram of B in fig. 2.
Detailed Description
The invention will now be described in detail with reference to fig. 1-6, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.
The propeller device capable of reducing the following of organisms and preventing the reeling in comprises a mounting frame 11, wherein a surrounding cylinder 12 is fixedly mounted on the lower end face of the mounting frame 11, a rotating motor 14 is fixedly mounted on the inner wall of the surrounding cylinder 12 in a bilateral symmetry manner, a power shaft 15 is dynamically mounted on the rotating motor 14, a rotating mounting plate 16 is fixedly mounted on the outer end face of the power shaft 15, a tightening cylinder 17 is fixedly mounted on the lower side of the rotating mounting plate 16, a mounting block 43 is arranged on the tightening cylinder 17 in a lifting manner and can be shifted, a closed mounting ring 45 is rotatably mounted on the inner wall of the mounting block 43 in a shifting manner, an outer arc hole cover 27 is arranged on the closed mounting ring 45 in a lifting manner and can be used for filtering and reducing the reeling in of fishes and other substances, a functional arc plate 32 is fixedly mounted on the upper end face of the closed mounting ring 45, and a plug hole closing device 33 is mounted in the functional arc plate 32 in a spherical array manner, the hole blocking and plugging device 33 comprises a hole sleeve 38, a rotary connecting block 39 is fixedly installed in the hole sleeve 38, the rotary connecting block 39 is rotatably installed with a rotary circulation plate 60, the rotary circulation plate 60 is used for rotary filtering to reduce the reeling-in probability, two control plates 40 are symmetrically and fixedly installed on the upper side and the lower side of the inner wall of the hole sleeve 38, a control electromagnet 41 is fixedly installed on the inner wall of each control plate 40, the control electromagnet 41 is used for controlling the fixation and loosening of the rotary circulation plate 60, a drainage cylinder 34 is fixedly connected to the inner wall of a functional arc plate 32, a reaming drainage sleeve 35 is communicated with the inner side of the drainage cylinder 34, the reaming drainage sleeve 35 is used for flaring drainage, a communication ring 36 is connected to the tail end of the drainage cylinder 34, the communication ring 36 is used for matching communication, an outlet pipe 30 is fixedly installed on the inner wall of the enclosure cylinder 12, and a matching communication sleeve 37 is fixedly connected to the outlet pipe 30, the matching communicating sleeve 37 is used for being jointed and communicated, the tail end of the eduction tube 30 is fixedly communicated with an outflow tube 31, the outflow tube 31 is fixedly connected with a fixing block 29, the fixing block 29 is fixedly arranged on the inner wall of the surrounding tube 12, a push-out arc ring 55 is slidably arranged on the inner wall of the surrounding tube 12, and the push-out arc ring 55 is used for pushing away adsorbed fishes with relatively large body types.
Preferably, an action cavity 46 is formed in the inner wall of the closed mounting ring 45, an action electromagnet 47 is fixedly mounted in the action cavity 46, an action sliding ring 48 is slidably mounted in the action cavity 46, a supporting spring 49 is fixedly mounted on the lower end face of the action sliding ring 48, the supporting spring 49 is used for supporting and resetting, an action connecting cylinder 50 is fixedly mounted on the lower end face of the action sliding ring 48, and the outward arc hole cover 27 is fixedly mounted at the tail end of the action connecting cylinder 50.
Preferably, the inner wall of the enclosure tube 12 is provided with two push-out cavities 51 in an up-down symmetrical manner, a push-out slide rod 54 is slidably mounted in the push-out cavity 51, a push-out spring 53 is fixedly mounted on the left end face of the push-out slide rod 54, a push-out arc ring 55 is fixedly mounted at the tail end of the push-out slide rod 54, a push-out electromagnet 52 is fixedly mounted on the inner wall of the push-out cavity 51 at the upper side, and the push-out electromagnet 52 is used for pushing out kinetic energy.
Preferably, a propulsion power shaft 23 is fixedly mounted on the surrounding cylinder 12, a propeller blade 13 is dynamically mounted on the propulsion power shaft 23, and the propeller blade 13 is used for ship propulsion.
Preferably, two toggle motors 44 are symmetrically and fixedly installed in the toggle installation block 43, and the shafts of the two toggle motors 44 are fixedly connected to the outer wall of the closed installation ring 45.
Preferably, a telescopic cavity 18 is formed in the tightening barrel 17, a tightening telescopic rod 19 is fixedly mounted in the telescopic cavity 18, a lifting connecting block 42 is fixedly mounted at the tail end of the tightening telescopic rod 19, and a mounting block 43 is shifted and mounted on the lower side end face of the lifting connecting block 42.
The specific use method of the invention is as follows:
when the ship is propelled and moved in the sea, the propeller blades 13 rotate at a high speed, and a large propelling current and an adsorption force are generated, so that when the ship runs in a sea area with more fishes, the surrounding cylinder 12 needs to be rolled in for protection, and the harm to marine organisms and the workload of the propeller are reduced;
the rotating motor 14 is started to rotate to drive the tightening barrel 17 to rotate for 90 degrees, then the telescopic rod 19 is tightened to start retraction, so that the closed mounting ring 45 is buckled on the outer wall of the surrounding barrel 12, the communicating ring 36 is tightly connected with the matched communicating sleeve 37 in a sticking mode, deformation is completed, accordingly, the winding of fishes and other substances with the body shapes larger than meshes of the outward arc hole cover 27 can be greatly reduced through the outward arc hole cover 27, and the accident that marine organisms are wound in along with food intake is reduced;
the small fish school activity can be directly drawn into the interior through the outward arc hole cover 27, then when small fishes are drawn into the interior, the small fishes enter the functional arc plate 32, at the moment, the control electromagnet 41 is started to adsorb the fixed rotary circulating plate 60, so that the inflowing seawater is temporarily blocked, and further the seawater with small fishes is drained from the outlet pipe 30 through the drainage of the reaming drainage sleeve 35 due to inertia, so that the small fishes are prevented from being drawn into the interior of the enclosure cylinder 12 to die, and meanwhile, the condition that predators are drawn into the enclosure cylinder along with the advancing due to the dead attraction of the small fishes is avoided;
meanwhile, when the ship moves, seawater is involved to generate adsorption force, and after the protection mode is started, the adsorption force is reflected in the meshes of the outward arc hole cover 27, when some fishes with the body sizes larger than the meshes are adsorbed on the surface, the advancing efficiency of the propeller is influenced and the fishes are injured, at the moment, the outward arc hole cover 27 is pushed out and shaken in a reciprocating mode through the intermittent electrification of the action electromagnet 47, so that the fishes are helped to escape from the adsorption force, and the normal drainage and seawater feeding of the propeller are further ensured;
after the propeller travels for a long time, impurities in the ocean may be blocked in meshes on the surface of the outward arc hole cover 27, so that the working efficiency of the propeller is reduced in a use protection mode, and therefore, the outward arc hole cover 27 is in a vertical downward state towards the normal travel mode at regular intervals, the swinging action is started through the toggle motor 44 at the moment, the lifting reciprocating action is started through the cooperation action electromagnet 47, the electromagnet 41 is controlled to be electrified to adsorb the fixed rotary circulation plate 60, the hole blocking device 33 is blocked, the impurities in the blocked meshes are pushed out by seawater in the water inlet and drainage process under the up-down and toggle states of the outward arc hole cover 27, and the problem that the working efficiency of the propeller is influenced is solved.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (6)
1. The utility model provides a propeller device that reducible living beings were followed and were prevented to be drawn in, includes the mounting bracket, its characterized in that: the lower end face of the mounting frame is fixedly provided with an enclosing barrel, the inner wall of the enclosing barrel is bilaterally and symmetrically and fixedly provided with a rotating motor, the rotating motor is dynamically provided with a power shaft, the outer end face of the power shaft is fixedly provided with a rotating mounting plate, the lower side of the rotating mounting plate is fixedly provided with a tightening barrel, the tightening barrel can be lifted and provided with a stirring mounting block, the inner wall of the stirring mounting block can be rotatably provided with a closed mounting ring, the closed mounting ring can be lifted and provided with an outward arc hole cover, the upper end face of the closed mounting ring is fixedly provided with a functional arc plate, a spherical array in the functional arc plate is provided with a hole closing device, the hole closing device comprises a hole sleeve, a rotating connecting block is fixedly arranged in the hole sleeve, the rotating connecting block is rotatably provided with a rotating circulation plate, and the inner wall of the hole sleeve is vertically and symmetrically and fixedly provided with two control plates, control panel inner wall fixed mounting has the control electro-magnet, function arc board inner wall fixedly connected with drainage cylinder, the inboard intercommunication of drainage cylinder has reaming drainage cover, drainage cylinder end-to-end connection has the intercommunication circle, surround a section of thick bamboo inner wall fixed mounting and have the stand-off, stand-off fixedly connected with cooperation intercommunication cover, stand-off end-to-end fixed intercommunication has an outflow section of thick bamboo, outflow section of thick bamboo fixedly connected with fixed block, fixed block fixed mounting in surround a section of thick bamboo inner wall, surround a section of thick bamboo inner wall slidable and install the release arc circle.
2. The propeller device of claim 1, wherein the propeller device is capable of reducing biological following and preventing entanglement, and comprises: the inner wall of the closed mounting ring is provided with an action cavity, an action electromagnet is fixedly mounted in the action cavity, an action sliding ring is slidably mounted in the action cavity, a supporting spring is fixedly mounted on the lower end face of the action sliding ring, an action connecting cylinder is fixedly mounted on the lower end face of the action sliding ring, and the tail end of the action connecting cylinder is fixedly mounted with the outward arc hole cover.
3. The propeller device of claim 1, wherein the propeller device is capable of reducing biological following and preventing entanglement, and comprises: the inner wall of the surrounding cylinder is provided with two push-out cavities in an up-down symmetrical mode, a push-out slide rod is arranged in the push-out cavities in a sliding mode, a push-out spring is fixedly mounted on the left end face of the push-out slide rod, a push-out arc ring is fixedly mounted at the tail end of the push-out slide rod, and a push-out electromagnet is fixedly mounted on the inner wall of the push-out cavity on the upper side.
4. The propeller device of claim 1, wherein the propeller device is capable of reducing biological following and preventing entanglement, and comprises: and the surrounding cylinder is fixedly provided with a propelling power shaft, and the propelling power shaft is provided with a propeller blade in a dynamic mode.
5. The propeller device of claim 1, wherein the propeller device is capable of reducing biological following and preventing entanglement, and comprises: two toggle motors are symmetrically and fixedly installed in the toggle installation block, and the toggle motor shafts are fixedly connected to the outer wall of the closed installation ring.
6. The propeller device of claim 1, wherein the propeller device is capable of reducing biological following and preventing entanglement, and comprises: tighten up and be equipped with flexible chamber in the section of thick bamboo, flexible intracavity fixed mounting tightens up the telescopic link, tighten up the terminal fixed mounting of telescopic link and have the lift connecting block, lift connecting block downside terminal surface fixed mounting stir the installation piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110285892.4A CN113815826A (en) | 2021-03-17 | 2021-03-17 | Screw propeller device capable of reducing biological following and preventing winding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110285892.4A CN113815826A (en) | 2021-03-17 | 2021-03-17 | Screw propeller device capable of reducing biological following and preventing winding |
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| Publication Number | Publication Date |
|---|---|
| CN113815826A true CN113815826A (en) | 2021-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110285892.4A Pending CN113815826A (en) | 2021-03-17 | 2021-03-17 | Screw propeller device capable of reducing biological following and preventing winding |
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| Country | Link |
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| CN (1) | CN113815826A (en) |
Citations (13)
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| GB9000056D0 (en) * | 1990-01-03 | 1990-03-07 | Chih Liu P | Multipurpose underwater propelling device |
| CN1493493A (en) * | 2003-09-02 | 2004-05-05 | 傅德俐 | Sleeve screw propeller thrustor |
| CN201272479Y (en) * | 2008-08-15 | 2009-07-15 | 罗清乘 | Propeller net cover |
| KR20130141184A (en) * | 2012-06-15 | 2013-12-26 | 삼성중공업 주식회사 | Duct structure of propulsion apparatus |
| KR20160037654A (en) * | 2014-09-29 | 2016-04-06 | 코리아터빈(주) | A kort nozzle propeller guarded by protector |
| CN206374954U (en) * | 2016-12-26 | 2017-08-04 | 江苏智舟智能装备技术有限公司 | A kind of anti-pasture and water protective cover of O-shaped marginal ray |
| CN207257944U (en) * | 2017-08-18 | 2018-04-20 | 象山博生电子科技有限公司 | Propeller for vessels protective device |
| CN207374624U (en) * | 2017-11-01 | 2018-05-18 | 青岛亿兆源船舶配件有限公司 | A kind of propeller of ship |
| CN208248479U (en) * | 2018-04-25 | 2018-12-18 | 安徽欣思创科技有限公司 | A kind of unmanned marine propeller protective device |
| CN208915406U (en) * | 2018-09-27 | 2019-05-31 | 罗海 | A kind of antiwind marine propeller |
| CN209683978U (en) * | 2019-03-07 | 2019-11-26 | 龙志国 | A kind of propeller |
| CN210681109U (en) * | 2019-10-22 | 2020-06-05 | 万力达船用动力系统(苏州)有限公司 | Propeller protection cover |
| CN212022941U (en) * | 2020-04-08 | 2020-11-27 | 黄华 | Bionic robot fish with environment detection function |
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2021
- 2021-03-17 CN CN202110285892.4A patent/CN113815826A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9000056D0 (en) * | 1990-01-03 | 1990-03-07 | Chih Liu P | Multipurpose underwater propelling device |
| CN1493493A (en) * | 2003-09-02 | 2004-05-05 | 傅德俐 | Sleeve screw propeller thrustor |
| CN201272479Y (en) * | 2008-08-15 | 2009-07-15 | 罗清乘 | Propeller net cover |
| KR20130141184A (en) * | 2012-06-15 | 2013-12-26 | 삼성중공업 주식회사 | Duct structure of propulsion apparatus |
| KR20160037654A (en) * | 2014-09-29 | 2016-04-06 | 코리아터빈(주) | A kort nozzle propeller guarded by protector |
| CN206374954U (en) * | 2016-12-26 | 2017-08-04 | 江苏智舟智能装备技术有限公司 | A kind of anti-pasture and water protective cover of O-shaped marginal ray |
| CN207257944U (en) * | 2017-08-18 | 2018-04-20 | 象山博生电子科技有限公司 | Propeller for vessels protective device |
| CN207374624U (en) * | 2017-11-01 | 2018-05-18 | 青岛亿兆源船舶配件有限公司 | A kind of propeller of ship |
| CN208248479U (en) * | 2018-04-25 | 2018-12-18 | 安徽欣思创科技有限公司 | A kind of unmanned marine propeller protective device |
| CN208915406U (en) * | 2018-09-27 | 2019-05-31 | 罗海 | A kind of antiwind marine propeller |
| CN209683978U (en) * | 2019-03-07 | 2019-11-26 | 龙志国 | A kind of propeller |
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| CN212022941U (en) * | 2020-04-08 | 2020-11-27 | 黄华 | Bionic robot fish with environment detection function |
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Effective date of registration: 20230119 Address after: 524000 shop 201, jinxiuhua Jingjing jiejingri Pavilion, No. 12, LvHua Road, development zone, Zhanjiang City, Guangdong Province Applicant after: ZHANJIANG ECONOMIC AND TECHNOLOGY DEVELOPMENT ZONE LITONG SHIP ENGINEERING Co.,Ltd. Address before: 324100 No. 27-2, Qianshan peak, Changtai village, Changtai Town, Jiangshan, Quzhou City, Zhejiang Province Applicant before: Li Lizhou |
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