CN204124315U - A kind of not heavy environment protection ship operated steadily - Google Patents
A kind of not heavy environment protection ship operated steadily Download PDFInfo
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- CN204124315U CN204124315U CN201420461901.6U CN201420461901U CN204124315U CN 204124315 U CN204124315 U CN 204124315U CN 201420461901 U CN201420461901 U CN 201420461901U CN 204124315 U CN204124315 U CN 204124315U
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- floating drum
- coolant
- environment protection
- pipe
- outlet pipe
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Abstract
The utility model provide a kind of only utilize pumping system as power, have anti-to turn over, crashworthiness, wind-proof and wave-proof and the not heavy environment protection ship operated steadily, this environment protection ship is the circular floating drum being fixedly connected with some strips at deck underrun framework, floating drum is along the equidistant arrangement in parallel in direction of hull width, the length of each floating drum slightly larger than the length of hull, the centre distance between two adjacent floating drums be the 2-3 of spar diameter doubly; The front end face of each floating drum offers the inlet opening, the aft end face that are connected with coolant inlet pipe and offers the apopore be connected with coolant outlet pipe, the sidewall of floating drum also offers the fairlead of coolant inlet pipe and coolant outlet pipe, each floating drum is supporting one group of boost pump, the turnover water end (W.E.) of boost pump is connected with the coolant inlet pipe of drawing from floating drum sidewall and coolant outlet pipe respectively, is positioned on coolant inlet pipe outside floating drum and coolant outlet pipe and is equipped with electromagnetic valve.Environment protection ship of the present utility model, can not sink when can not only ensure that hull is in danger, and the impact of stormy waves to hull bottom just rightly can be dissolved in the gap limited between floating drum and floating drum, makes the operation of boats and ships more steady.
Description
Technical field
the utility model relates to a kind of marine communication means, particularly relate to a kind of boats and ships with fine resistance to sinking energy of navigation in river transport, sea-freight, more specifically relating to one only utilizes pumping system as power, have anti-to turn over, crashworthiness, wind-proof and wave-proof and the not heavy environment protection ship operated steadily.
Background technology
At all times, the important component part of waterborne traffic transport is not only by boats and ships, and accounts for absolute proportion in transport total amount, has other any transportation mode irreplaceable specific position of institute and vital function.Existingly navigate by water in rivers, traditional boats and ships in marine site, mainly utilize the overall draining of hull, thus require that hull has higher intensity and load, water tightness requires also high, cause the manufacturing cost of ship very high, in travelling simultaneously the resistance that is subject to of hull and friction force larger, in order to reduce the resistance of advance, hull is typically designed to strip shape, and in order to increase bearing capacity, general employing increases cabin height and solves, but this strip and highly high boats and ships, in the process of navigation, be subject to very much the attack of stormy waves and cause shipwreck, as hull can not overturn righting voluntarily, then there is bilging, the risk of Ship's Sinking.Boats and ships sinking in danger is a current international and domestic still open question, existing antagonism is sunk the research of technology and is mainly started with from two aspects, the material adopting water tightness good on the one hand, intact to guarantee boats and ships watertight state, be adopt light material to fill cabin on the other hand, obtain permanent buoyancy to make boats and ships; Watertight resists heavy technology for keeping the floading condition that boats and ships are good, the safety of guarantee boats and ships and personnel is effective and necessary, but the watertightness performance of boats and ships is good again, when in danger, still there is the possibility of damage water inlet sinking, and cabin filling with light material, though permanent buoyancy can be obtained, but greatly take the space of cabin, cargo capacity is greatly reduced.
In addition, the major way that existing ship is advanced still adopts internal combustion engine drive screw propeller to rotate the mode realizing screw propulsion, and turning to of boats and ships is realized by the rotational angle of hydraulic pressure drive control system stern rudder.In order to obtain enough propulsive forces, screw propeller fast rotational must be made, but atwirl screw propeller can produce friction at a high speed with water, make screw propeller surface temperature up to nearly thousand degrees Celsius, often screw propeller surface stripping aperture one by one, substantially reduce the service life of screw propeller, in addition, the rotation of screw propeller is not only easy to damage epibiota, is also easily wound into pasture and water or fishnet etc. and causes boats and ships to advance; And realize turning to of boats and ships by the rotational angle of hydraulic pressure drive control system stern rudder, because rudder face can be subject to the impact of resistance to water-flow and whirlpool resistance, its turning velocity is slow, and kinetic equation loss is large.For above-mentioned situation, applicant of the present utility model have developed a pumping system that only utilizes as the environmental protection and energy saving ship of power, and applied for utility model patent on March 29th, 2011 to State Intellectual Property Office and be authorized, the patent No. is 201110076431.2, this environmental protection and energy saving ship adopts to arrange centrifugal pump in the cabin, left and right of hull, the water inlet pipe and water outlet pipe be connected with centrifugal pump, the auxiliary pipe of U-shaped Inlet and outlet water be connected with water inlet pipe and water outlet pipe and the electromagnetic valve being arranged in water inlet pipe and water outlet pipe and the auxiliary pipe of Inlet and outlet water, and by the layout of each component locations and the control to centrifugal pump power and electromagnetic valve switch, easily realize the advance of hull, retreat and turn.The trip that will be suitable as shallow sea navigation due to these environmental protection and energy saving shipowner is endured or the use of fluviatic ferryboat, therefore, the hydraulic pressure that centrifugal pump exports enough promotes environmental protection economical ship and advances, for navigating by water in great river, the ship in great river or sea, the hydraulic pressure that centrifugal pump exports obviously cannot provide power for the boats and ships advanced at a high speed.
Summary of the invention
For solving above Problems existing, the purpose of this utility model is to provide a kind of not heavy environment protection ship operated steadily, and this environment protection ship utilizes pumping system to advance to drive hull as power, have resist turn over, the feature of crashworthiness, wind-proof and wave-proof.
For realizing above object, the not heavy environment protection ship operated steadily of the present utility model, comprise deck and be positioned at the cabin on deck, it is characterized in that: described deck underrun framework is fixedly connected with the circular floating drum of some strips, floating drum is along the equidistant arrangement in parallel in direction of hull width, the length of each floating drum slightly larger than the length of hull, the centre distance between two adjacent floating drums be the 2-3 of spar diameter doubly; The front end face of each floating drum offers the inlet opening, the aft end face that are connected with coolant inlet pipe and offers the apopore be connected with coolant outlet pipe, the sidewall of floating drum also offers the fairlead of coolant inlet pipe and coolant outlet pipe, each floating drum is supporting one group of boost pump, the water inlet end of boost pump is connected with the coolant inlet pipe of drawing from floating drum sidewall and coolant outlet pipe respectively with water side, is positioned on coolant inlet pipe outside floating drum and coolant outlet pipe and is equipped with electromagnetic valve; Boost pump, electromagnetic valve, the power supply of electric power and each control system is provided all to be arranged in cabin for boost pump.
In order to the hull enabling width larger obtains enough propulsive forces, the quantity of above-mentioned floating drum is 3-50, often organize boost pump to be connected in series by 2-5 water pump and to form, often organizing boost pump all has the motor of 1 water pump to be servomotor, reaches the direction of control ship for regulating water pump pressure.
In order to the power utilizing the natural wind of all directions to advance to replace or to increase boats and ships, the end face on above-mentioned deck is provided with power-assisting wind sail, this power-assisting wind sail by three masts be fixed in the middle of mid-ship both sides and afterbody, can the canvas of movement between mast and canvas jack form.
In order to regulate size and the angle of sail in time according to the direction of natural wind, the mast that the width of above-mentioned canvas doubles mid-ship side to hull afterbody mast between distance, the upper and lower end parts of canvas both sides is connected with rope, and the other end of rope is fixed on canvas jack; Described canvas jack is motorized pulleys, and these motorized pulleys are arranged on the mast of mid-ship both sides.
In order to reduce the resistance of hull advance as far as possible, utilize the back pressure that water spray produces, the front end face that above-mentioned floating drum is positioned at fore is that aft end face that is bullet-shaped, that be positioned at stern is bullet-shaped for reversing simultaneously.
Enter in order to foreign material in block water better to protect water pump, the inlet opening of above-mentioned floating drum front end face is provided with filtering net.
In order to avoid chamber whole when floating drum is collided is intake, thus jeopardize the safety of hull, above-mentioned each floating drum inner chamber is provided with the radial dividing plate that inner chamber can be divided into some chambers, and the coolant inlet pipe of floating drum sidewall and coolant outlet pipe fairlead lay respectively at the front and back chamber of floating drum.
In order to Real-Time Monitoring boats and ships are advanced the resistance be subject to, to adjust pressure and the water-jet velocity of each boost pump in time, thus easily realize advancing, retreat or turning, above-mentionedly be positioned at the outermost floating drum of hull, its lateral wall is fixed with speed sensor, and this sensor is for monitoring the relative velocity of floating drum and current when boats and ships are advanced.
In order to make the retrogressing of boats and ships more flexible, above-mentionedly be positioned at coolant inlet pipe outside floating drum and coolant outlet pipe both sides are also provided with the auxiliary pipe of U-shaped water inlet and the auxiliary pipe of U-shaped water outlet, intake on coolant inlet pipe that one end of auxiliary pipe is connected between boost pump water inlet end and coolant inlet pipe electromagnetic valve, the other end is connected on the coolant outlet pipe between coolant outlet pipe electromagnetic valve and water outlet, one end of the auxiliary pipe of water outlet is connected on the coolant inlet pipe between coolant inlet pipe electromagnetic valve and water inlet, the other end is connected on the coolant outlet pipe between boost pump water side and coolant outlet pipe electromagnetic valve, and intake auxiliary pipe and the auxiliary pipe of water outlet are equipped with electromagnetic valve.
In order to avoid to the pollution of cabin body with better save the energy, above-mentioned deck is provided with photovoltaic solar panel, and these solar panels are connected with the solar cell arranged belowdecks.
The not heavy environment protection ship operated steadily of the present utility model, utilization arranges the multiple cylindric floating drum along the equidistant arrangement in parallel of hull Width in the bottom of hull, make hull wide and highly low, there is when can not only ensure that hull is in danger anti-turning over, the performance of crashworthiness, and the impact of stormy waves to hull bottom just rightly can be dissolved in the gap limited between floating drum and floating drum, make the operation of boats and ships more steady, and by arranging inlet opening and apopore in the front and back end of each floating drum, coordinate water inlet pipe and water outlet pipe and the boost pump supporting with each floating drum again, when boost pump starts, the water being positioned at floating drum front end face is taken away rapidly, the waters of fore forms very large negative pressure immediately, meanwhile, current outwards spray from the apopore of floating drum aft end face, stern obtains thrust forward immediately, under multiple water pump supercharging, hull just can obtain enough onward impulses, in addition, by controlling the different speed of drawing water of deck two side float boost pump, turning to of hull can easily be realized.Environmental protection and energy saving ship of the present utility model, structure is simple, easily manufactured, cabin does not contact water completely, unique floating drum contacted with water, can install at the scene again after factory's stock production, not only production effect is high, speed is fast, quality is good, better can ensure the sealing property of hull, and the displacement that the constructional feature Neng Shi unit steel material of floating drum produces is far longer than existing any hull structure, greatly reduces the productive costs of ship; Environmental protection and energy saving ship of the present utility model both can be used as and has navigated by water in great river, marinely greatly to use for the freighter that carries cargo, also can be used as the pleasure-boat navigated by water in rivers, lake and used.
Accompanying drawing explanation
Fig. 1 is the structural representation in the not heavy environment protection ship front that the utility model operates steadily.
Fig. 2 is the structural representation of the not heavy environment protection ship side that the utility model operates steadily.
Fig. 3 is the structural representation that floating drum is connected with between water inlet pipe and water outlet pipe and boost pump.
Fig. 4 is the structural representation of power-assisting wind sail.
Fig. 5 is the partial enlarged drawing in the A indication region of Fig. 4.
Detailed description of the invention
As Fig. 1, 2, shown in 3, the not heavy environment protection ship operated steadily of the present utility model, comprise hull 1, the cabin 12 that hull comprises deck 11 and is positioned on deck, the bottom on deck is fixedly connected with the circular floating drum 3 of 3-50 strip by framework 2, floating drum is along the equidistant arrangement in parallel in direction of hull width, the length of each floating drum is slightly larger than the length of hull, the difference in the diameter visual use waters of floating drum is changeable, distance between two adjacent floating drums is 2-3 times of spar diameter, floating drum front end face is bullet-shaped, aft end face is anti-bullet-shaped, floating drum inner chamber is provided with the radial dividing plate 31 that inner chamber can be divided into some chambers, the front end face of each floating drum offers the inlet opening 32 be connected with coolant inlet pipe 4, aft end face offers the apopore 33 be connected with coolant outlet pipe 5, the sidewall of floating drum front chamber offers the fairlead 34 of coolant inlet pipe, the sidewall of rear chamber offers the fairlead 35 of coolant outlet pipe, the inlet opening of floating drum front end face is provided with filtering net 36, each floating drum is supporting one group of boost pump, this group boost pump is connected in series by 2-5 water pump 6 to form, often organizing boost pump all has the motor of 1 water pump to be servomotor, reach control the direction of ship for regulating water pump pressure, the water inlet end of boost pump is connected with the coolant inlet pipe of drawing from floating drum sidewall, water side is connected with the coolant outlet pipe of drawing from floating drum sidewall, be positioned on coolant inlet pipe outside floating drum and coolant outlet pipe and be equipped with electromagnetic valve 41, 51, the auxiliary pipe of U-shaped water inlet 7 and the auxiliary pipe 8 of U-shaped water outlet is also provided with at the coolant inlet pipe be positioned at outside floating drum and coolant outlet pipe both sides, intake one end of auxiliary pipe connects on the coolant inlet pipe often organized between boost pump water inlet end and coolant inlet pipe electromagnetic valve, the other end is connected on the coolant outlet pipe between coolant outlet pipe electromagnetic valve and coolant outlet pipe fairlead, one end of the auxiliary pipe of water outlet is connected on the coolant inlet pipe between coolant inlet pipe electromagnetic valve and coolant inlet pipe fairlead, the other end is connected on the coolant outlet pipe often between group boost pump water side and coolant outlet pipe electromagnetic valve, intake auxiliary pipe and the auxiliary pipe of water outlet is equipped with electromagnetic valve 71, 81, be positioned at the outermost floating drum lateral wall of hull and be fixed with speed sensor, this sensor is for monitoring the relative velocity of floating drum and current when boats and ships are advanced, side sheets adopts double-decker, and lateral wall is glass-felt plastic, madial wall is foamed plastic, cabin is provided with operator's compartment, boost pump, electromagnetic valve and provide the power supply of power to be all arranged in operator's compartment for boost pump,
In order to the power utilizing the natural wind of different directions to advance to increase boats and ships, the end face on deck is provided with power-assisting wind sail 9, this power-assisting wind sail is by being fixed on two, mid-ship both sides mast 91 and being fixed on a mast 92 in the middle of afterbody, can at mast 91, the canvas 93 of movement between 92 and the motorized pulleys 94 be arranged on mast 91 are formed, in order to regulate size and the angle of sail in time according to the direction of natural wind, the width of canvas doubles the distance between mast 91 to mast 92, the upper and lower side of canvas both sides is connected with rope 94, the other end of rope is fixed on motorized pulleys, as Fig. 4, shown in 5,
In order to avoid to the pollution of cabin body with better save the energy, boost pump adopts solar cell for supplying power (not marking in figure), deck is provided with photovoltaic solar panel 10, and these solar panels are connected with setting solar cell belowdecks.
Navigation automatically can be realized to make boats and ships, environmental protection and energy saving ship of the present utility model is also provided with radar, super sonic detectoscope and GPS orientator, by computer, radar, super sonic detectoscope, GPS orientator and speed sensor, the control setup of water pump, the control setup of electromagnetic valve is formed digitized direction controlling.
The principle of work of the not heavy environment protection ship that the utility model operates steadily: when hull needs to advance, chaufeur is by the actuation means of operator's compartment, start each group of boost pump, open the electromagnetic valve 41 on coolant inlet pipe and the electromagnetic valve 51 on coolant outlet pipe simultaneously, current are drawn into from the inlet opening 32 of floating drum front end face, after coolant inlet pipe and each water pump supercharging, then discharged by the apopore 33 of coolant outlet pipe and floating drum aft end face, advance fast under the effect of hull negative pressure, below thrust above; When hull needs to retreat, chaufeur is by the actuation means of operator's compartment, close the electromagnetic valve 41 on coolant inlet pipe and the electromagnetic valve 51 on coolant outlet pipe, open the electromagnetic valve 71 on the auxiliary pipe of water inlet and the electromagnetic valve 81 on the auxiliary pipe of water outlet simultaneously, current are drawn into from the apopore 33 of floating drum aft end face, arrive the water inlet end of each group of boost pump through auxiliary pipe 7 of intaking, discharged by the water side of each group of boost pump after the auxiliary pipe 8 of water outlet from the inlet opening 32 of floating drum front end face, hull retreats; When hull needs to bend to right, chaufeur, by the actuation means of operator's compartment, strengthens the power of floating drum boost pump on the left of deck, reduces the power of floating drum boost pump on the right side of deck, make left side the drawing water of floating drum, drainage speed be greater than right side floating drum draws water, drainage speed, hull bends to right; When hull needs to turn left, chaufeur, by the actuation means of operator's compartment, strengthens the power of floating drum boost pump on the right side of deck, reduces the power of floating drum boost pump on the left of deck, make right side draw water, drainage speed be greater than left side draw water, drainage speed, hull is turned left; When sea blows, the position of adjustment power-assisting wind sail canvas and size, make its windward thirty years of age, hull, under the cooperation of wind-force, advances more fast, when wind-force is enough large, can close boost pump, and the power making hull utilize sail to provide advances.
Environmental protection and energy saving ship of the present utility model, the battery of water inlet pipe and water outlet pipe, boost pump and power supply only need be set in cabin, structure is simple, in the process of advancing, the relative velocity of floating drum and current when being advanced by the sensor Real-Time Monitoring boats and ships being fixed on the outermost floating drum lateral wall of hull, then the environmental data coordinating radar, super sonic detectoscope, GPS orientator to monitor, the in time Power output of adjustment boost pump, carry out navigation automatically, it is convenient especially to operate.In addition, boats and ships are in the process of advancing, as larger stormy waves, because hull is wide and highly low, and the impact of stormy waves to hull bottom just rightly can be dissolved in floating drum bottom deck and the gap between floating drum, thus can ensure to operate steadily, and in time running into shock, because floating drum two ends are sub warhead structure and inner chamber is provided with radial dividing plate, even if somewhere is impaired, do not affect the performance that it is anti-heavy yet, environmental protection and energy saving gear of the present utility model have anti-ly to turn over, the feature of crashworthiness, wind-proof and wave-proof.
Claims (2)
1. the not heavy environment protection ship operated steadily, comprise deck and be positioned at the cabin on deck, it is characterized in that: described deck underrun framework is fixedly connected with the circular floating drum of some strips, floating drum is along the equidistant arrangement in parallel in direction of hull width, the length of each floating drum slightly larger than the length of hull, the centre distance between two adjacent floating drums be the 2-3 of spar diameter doubly; The front end face of each floating drum offers the inlet opening, the aft end face that are connected with coolant inlet pipe and offers the apopore be connected with coolant outlet pipe, the sidewall of floating drum also offers the fairlead of coolant inlet pipe and coolant outlet pipe, each floating drum is supporting one group of boost pump, the water inlet end of boost pump is connected with the coolant inlet pipe of drawing from floating drum sidewall and coolant outlet pipe respectively with water side, is positioned on coolant inlet pipe outside floating drum and coolant outlet pipe and is equipped with electromagnetic valve; Boost pump, electromagnetic valve, the power supply of electric power and each control system is provided all to be arranged in cabin for boost pump.
2. the not heavy environment protection ship operated steadily according to claim 1, is characterized in that: the quantity of described floating drum is 3-50, often organizes boost pump and is formed by 2-5 water pump serial connection.
3. the not heavy environment protection ship operated steadily according to claim 1 or 2, it is characterized in that: the end face on described deck is provided with power-assisting wind sail, this power-assisting wind sail by three masts be fixed in the middle of mid-ship both sides and afterbody, can the canvas of movement between mast and canvas jack form.
4. the not heavy environment protection ship operated steadily according to claim 3, it is characterized in that: the mast that the width of described canvas doubles mid-ship side to hull afterbody mast between distance, the upper and lower end parts of canvas both sides is connected with rope, and the other end of rope is fixed on canvas jack; Described canvas jack is motorized pulleys, and these motorized pulleys are arranged at the mast of mid-ship both sides.
5. the not heavy environment protection ship operated steadily according to claim 4, is characterized in that: the front end face that described floating drum is positioned at fore is that aft end face that is bullet-shaped, that be positioned at stern is bullet-shaped for reversing.
6. the not heavy environment protection ship operated steadily according to claim 5, is characterized in that: the inlet opening of described floating drum front end face is provided with filtering net.
7. the not heavy environment protection ship operated steadily according to claim 6, is characterized in that: described each floating drum inner chamber is provided with the radial dividing plate that inner chamber can be divided into some chambers, and the coolant inlet pipe of floating drum sidewall and coolant outlet pipe fairlead lay respectively at the front and back chamber of floating drum.
8. the not heavy environment protection ship operated steadily according to claim 7, is characterized in that: described in be positioned at the outermost floating drum of hull, its lateral wall is fixed with speed sensor.
9. the not heavy environment protection ship operated steadily according to claim 8, it is characterized in that: described in be positioned at coolant inlet pipe outside floating drum and coolant outlet pipe both sides are also provided with the auxiliary pipe of U-shaped water inlet and the auxiliary pipe of U-shaped water outlet, intake one end of auxiliary pipe is connected on the coolant inlet pipe between boost pump water inlet end and coolant inlet pipe electromagnetic valve, the other end is connected on the coolant outlet pipe between coolant outlet pipe electromagnetic valve and water outlet, one end of the auxiliary pipe of water outlet is connected on the coolant inlet pipe between coolant inlet pipe electromagnetic valve and water inlet, the other end is connected on the coolant outlet pipe between boost pump water side and coolant outlet pipe electromagnetic valve, intake auxiliary pipe and the auxiliary pipe of water outlet is equipped with electromagnetic valve.
10. the not heavy environment protection ship operated steadily according to claim 9, it is characterized in that: described deck is provided with photovoltaic solar panel, these solar panels are connected with the solar cell arranged belowdecks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420461901.6U CN204124315U (en) | 2014-08-16 | 2014-08-16 | A kind of not heavy environment protection ship operated steadily |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420461901.6U CN204124315U (en) | 2014-08-16 | 2014-08-16 | A kind of not heavy environment protection ship operated steadily |
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| Publication Number | Publication Date |
|---|---|
| CN204124315U true CN204124315U (en) | 2015-01-28 |
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ID=52380695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420461901.6U Withdrawn - After Issue CN204124315U (en) | 2014-08-16 | 2014-08-16 | A kind of not heavy environment protection ship operated steadily |
Country Status (1)
| Country | Link |
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| CN (1) | CN204124315U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104149927B (en) * | 2014-08-16 | 2016-08-17 | 王承辉 | Operate steadily does not sinks environment protection ship |
| CN108860447A (en) * | 2018-05-22 | 2018-11-23 | 和志耿 | A kind of suction is water jet can not to turn over floating body |
| CN114482177A (en) * | 2022-01-07 | 2022-05-13 | 中建八局第一建设有限公司 | Water-jet type soil digging device and method |
-
2014
- 2014-08-16 CN CN201420461901.6U patent/CN204124315U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104149927B (en) * | 2014-08-16 | 2016-08-17 | 王承辉 | Operate steadily does not sinks environment protection ship |
| CN108860447A (en) * | 2018-05-22 | 2018-11-23 | 和志耿 | A kind of suction is water jet can not to turn over floating body |
| CN114482177A (en) * | 2022-01-07 | 2022-05-13 | 中建八局第一建设有限公司 | Water-jet type soil digging device and method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150128 Effective date of abandoning: 20160817 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |