135results about "Hull stems" patented technology

A cargo vessel is provided to easily load long-cargos by moving a movable pillar and prevent loaded cargos from being fallen down by mounting the movable pillar after loading. A cargo vessel includes a plurality of supporting pillars(13) and a lifting deck(30). The pillars are perpendicularly mounted between peripheries of a side end of a hatch of an upper deck(5) and a side end of a hatch of a second deck(3). The lifting deck is arranged between the supporting pillar and a vessel frame(12) and is lifted between middle and upward positions. The supporting pillars are composed of fixed pillars(14) and movable pillars(15). The fixed and movable pillars are spaced apart from each other at a horizontal interval. The movable pillar has a lower end part inserted in a lower supporting frame formed at the periphery of the side end of the hatch of the second deck and an upper end part inserted in an upper supporting frame of the periphery of the side end of the hatch of the upper deck.

The invention discloses a deformable ship stem with a flexible air bag. The ship stem is capable of reducing water resistance in ship sailing and improving the sailing speed of a ship, in peculiar to a deformable ship stem with a flexible air bag. The ship stem comprises a ship body, wherein the bottom of the ship body is provided with a bulbstem which is made of flexible materials and comprises the flexible air bag with an inflatable inner chamber; the flexible air bag is fixedly connected to the front end of the bottom of the ship body through a connecting piece; after the flexible air bag is inflated, the shape of the air bag is a stream line which raises to the front of the ship body; the bottom of the ship body is provided with an air inflating and exhausting system for inflating and exhausting air for the flexible air bag; a ship stem door is arranged above the flexible air bag; and the lower end of the ship stem door is hinged on the ship body. The deformable ship stem with the flexible air bag has the advantages of effectively reducing the sailing resistance of the ship, and the sailing speed is promoted, so that the energy consumed in a ship sailing process is reduced; when the ship arrives on a shore, the air is exhausted from the air bag, the air bag contracts, and a space is vacated for the ship stem door, so that the ship stem door is placed down successfully; and the deformable ship stem with the air bag is especially suitable for ferry ships carrying passengers and vehicles or other ships with ship stem doors; and meanwhile, the ship stem is simple, easy and feasible in structure, and low in cost.

A cruise ship or pleasure boat is disclosed that has an open or semi-open main public space situated around the axial longitudinal plane of the ship and at the base of port and starboard longitudinal superstructures. The port and starboard longitudinal superstructures that border the public space are inclined away from the axial longitudinal plane of the ship so that the ratio of the width of the combination comprising the longitudinal superstructures and the public space to the width of the ship at the waterline is from 1.3 to 3.

The invention provides a normal construction method of a ship bow section outer plate. The normal construction method comprises the steps that S1, a side view and a cross section view of the bow section outer plate and a rib molded line on a main ship body are made; s2, obtaining a cross section drawing of the jig frame; s3, obtaining a cross section drawing of each rib jig frame template; s4, machining each rib jig frame template; s5, a jig frame field operation plane graph is obtained; s6, the stand column is machined; s7, processing an outer plate; s8, the machined rib jig frame formworks and the corresponding stand columns are subjected to small assembly installation, rib formwork frames are obtained, and all the obtained rib formwork frames are hoisted to the jig frame ground; s9, hoisting an outer plate; the jig frame formworks are built according to the curvature of each rib molded line on the outer plate, it is guaranteed that the working faces of the jig frame formworks are tightly attached to the outer surface of the outer plate, and the supporting stability during operation is guaranteed; in addition, a normal building mode is adopted, turning-over operation of a traditional reverse building mode is avoided, and the construction efficiency and the construction quality are improved.

The invention discloses a direct conveying ship of big-tonnage river, which comprises the following parts: bulk, tail, driving chamber, each operating part, lifting head, stable fin, wherein the driving chamber is set on the deck, which is lifted with head; the head pusher is set on the lower part of head column; the ship keeps stable running, which saves cost.

The invention discloses a sharp-bilge planing boat type with constant wetted length. A boat body curved surface is a fairing space closed curved surface formed in a controlling mode with a designed water line, a midship longitudinal section line, an angle folding line, an upper boundary line, a stern transverse section line, a midship section line, a folding angle line longitudinal inclined angle, a stern inclined rising angle and a midship inclined rising angle as characteristics. The sharp-bilge planing boat type has the advantages that the wetted length is constant and unchanged no matter how the ship state changes at various kinds of ship speed; the resistance performance is greatly reduced than that of a traditional planing boat when sailing in states of water draining, transiting and taking off; the resistance performance is close to that of the traditional planing boat when sailing in a planing state; maneuverability, seaworthiness and seakeeping are greatly improved. The sharp-bilge planning boat type can be used in sea conditions 1-2 grades higher than the traditional planing boat. Further, due to the fact that the wetted length remains unchanged, the sharp-bilge planning boat type is more favorable for people to utilize the length Froude number to analyze and study the performance of the sharp-bilge planning boat type theoretically.

The invention discloses a separable bow structure of a supercavitation underwater vehicle. The separable bow structure comprises a split type flow guide cover unit, a power-losing type electromagnet unit, a connecting rib ring and an underwater vehicle hull. The split type flow guide cover unit is composed of a flow guide cover upper portion, a flow guide cover lower portion and buoyancy foam, andthe buoyancy foam is fixed to an inner surface of the flow guide cover upper portion in a bonding mode. The power-losing electromagnet unit is composed of a ferromagnetic disc and a power-losing electromagnet. The ferromagnetic disc is fixed on an internal rib ring of the split type flow guide cover unit; the four ferromagnetic discs are evenly distributed in a circumferential direction, an included angle between the center of each ferromagnetic disc and a boundary between the upper portion of the flow guide cover and the lower portion of the flow guide cover is kept to be 45 degrees, circular grooves are evenly formed in the connecting rib ring in the circumferential direction, and power-losing type electromagnets are installed in the circular grooves; a connecting rib ring is in threaded connection with the underwater vehicle hull; and a power line channel is further formed in the circular grooves and used for connecting the power-losing type electromagnets with a power supply unitin the underwater vehicle hull through a power line.

The invention provides a bulbous bow assembly in the technical field of ship equipment. The bulbous bow assembly comprises a bulbous bow main body, a slideway and a driving slippage device, wherein the bulbous bow main body is arranged below a ship body along the length direction of a ship; the slideway is arranged between the ship body and the bulbous bow main body, and comprises slide rails which are distributed along the length direction of the ship and slide blocks matched with the slide rails in a sliding mode; the slide blocks slide front and back in the slide rails along the length direction of the ship; the slide rails are fixedly connected with the bottom of the ship body, and are fixedly connected with the top of the bulbous bow main body; the driving slippage device is fixedly arranged in the ship body, and comprises a main pulley and a driving belt; the main pulley is a fixed pulley; the driving belt surrounds the main pulley; two ends of the driving belt are respectively fixedly connected with the front end and the rear end of the bulbous bow main body. The ship body provided by the invention is separated away from the bulbous bow main body; the position of the bulbous bow main body can be adjusted in real time; according to a wave making cancellation principle, the bulbous bow main body can be fully utilized for reducing the ship wave making resistance under multiple navigation speeds and multiple sea conditions, furthest reducing the navigation resistance of the ship body, reducing energy source loss, and further reducing the operation cost.

The invention discloses a skimming boat. The skimming boat comprises a boat body, wherein a plurality of steps are disposed at the bottom of the boat body at intervals along the length direction of the boat body, and each step has a first end part close to a boat bow and a second end part close to a boat stern; for any adjacent two of the steps, the height of the second end part, close to one side of the boat bow, of each step is bigger than that of the first end part, close to one side of the boat stern, of each step. Due to the disposition of the steps at the bottom of the boat body at intervals, as the skimming boat is sliding, a cavity can be formed behind one step by water when water is flowing through the step, and water forms a sliding surface close to the second end part of the step, and would contact with the next step after a certain distance, and so on; the cavity can reduce the sliding resistance of the skimming boat to some extent, each sliding surface has a small length, i.e. a bigger span-chord ratio, and therefore the sliding resistance of the skimming boat is reduced while the sliding speed and the acceleration rate of the skimming boat are improved.

The invention provides an anti-bubble axe-like head and a scientific research ship. The axe-like head is positioned at the bottom of a bow; a junction between the axe-like head and the bow is a concave part; a water line is intersected with the axe-like head due to the position of the axe-like head on the ship; the length of the axe-like head is not more than 8% of the length between perpendiculars of the ship; in side view, the axe-like head is a sheet body, the upper contour and the lower contour of the axe-like head are rounded, and the thickness of the axe-like head is gradually increased from the bow to the rear part of the ship; in the view of transverse section, a raised part of the axe-like head is slowly transitional from top to bottom, the largest width of the transverse section of the axe-like head does not exceed 20% of the maximum water line width, and the half entrance angle of the water line part is not more than 20 DEG. According to the invention, on the one hand, bubbles are furthest reduced and the flowing tendency of the bubbles along a ship body is improved so that influences of the bubbles on acoustic equipment embedded in the bottom of the ship are avoided; and on the other hand, the running resistance of the ship is reduced, the economic efficiency of the ship is enhanced, and both working performances of the acoustic equipment at the bottom of the ship and the resistance performance of the ship are preferably taken into consideration.

The invention discloses a novel icebreaker bow structure and an ice breaking method. The bow structure comprises a bow upper part, a bow middle part and a bow lower part, the bow upper part is a straight bow body and is perpendicular to a horizontal plane, and the inclination angle is 90 degrees; the bow middle part adopts an ice-breaking blade inclining downwards, and the inclination angle of theice-breaking blade is 15-40 degrees; the bow lower part adopts a bulbous bow, the lower edge line of the bulbous bow is provided with an ice-breaking blade, and the inclination angle of the ice-breaking blade is 35-50 degrees; the upper edge line of the bulbous bow is provided with an ice-breaking blade with the inclination angle of 15-30 degrees. The bow structure can have good ice breaking performance under ice conditions at different degrees in polar regions and have good resistance performance in open water areas at the same time.

The invention discloses a spilled oil recovery vessel with a multiangle sailing function, comprising a hull. The two sides of the hull in the length direction are asymmetric; one side is a linear sidein linear shape, and the other side is an arc side in arc shape; a plurality of dynamic surface spilled oil recovery devices disposed at intervals along the length direction are arranged in a chamberbelow the hull; the hull is provided with spilled oil recovery doors in one-to-one correspondence with the spilled oil recovery devices on the bottom outer wall of the linear side at intervals alongits length; each of the bow and stern of the hull is provided with a pod propeller that is used to push the hull and adjust hull sailing angle. The spilled oil recovery vessel is suitable for sailingat various angles, can provide enlarged area of marine spilled oil recovery and enables spilled oil o be recovered with less difficulty.

The invention provides a prow for improving the capacity of a liquid cargo tank, and relates to the technical field of ship construction and repair. The prow for improving the capacity of the liquid cargo tank includes a prow shell and a bulkhead at the front end of the liquid cargo tank; the prow shell is located at the portion, wherein the half width H of a designed waterline is 30-50% of the half width H0 of a ship body, of the bulkhead at the front end of the liquid cargo tank; the bulkhead at the front end of the liquid cargo tank reaches the position which is 92-95% away from an after-perpendicular line. According to the prow for improving the capacity of the liquid cargo tank, the half width of the designed waterline is designed to be large, the bulkhead at the front end of the liquid cargo tank thus can move forward, the cross section of the liquid cargo tank at the position of the prow is increased, the utilization rate of a first-part linear space is improved, and the arrangement of the liquid cargo tank is optimized, so that the capacity of the liquid cargo tank can be largely increased. On this basis, the invention also provides a liquefied gas ship.

The present invention provides a device for reducing ship navigation resistance and assisting in ship turning. A t-branch pipe is arranged at the lower front end of a ship bow water line, the t-branchpipe is connected with the front, the left port and the right port of the ship bow; at least one control valve (or a conduction device) is installed at the t-branch pipe, and a control panel of slavedriving can control the deviation of the valve (or the conduction device); water flows in the t-branch pipe at the front end of the ship bow and flows out from shunts at two sides to reduce the pressure resistance of the ship bow and increase the traveling speed of the ship or reduce energy consumption; when the valve (or the conduction device) is located at the center of the t-branch pipe, the stream meanly flows out through the shunts at the two sides without influence on ship heading; and when the valve (or the conduction device) allow the stream to deviate the shunt at one side to allow the ship to turning to the other side.

A watercraft body includes a hull made of an aluminum-based material and a separately fabricated superstructure that is mounted on the hull via adjoining flange plates. To fabricate the hull, frame elements are spot-welded onto the inner surface of initially-flat hull plates or plank elements, which are then curved according to the required hull contour and assembled onto the flange plate. The frame elements are screwed together via gusset plates and transverse beams to form transverse frames, and then longitudinal seams between plank elements are continuously welded from the outside. Additionally, the longitudinal seams may be welded from the inside, for example by temporarily removing gusset plates to allow continuous access to the longitudinal seams. Additionally, stand-offs may form a spacing gap between the frame elements and the plank elements, and an adhesive may fill this spacing gap to adhesively bond the framework to the hull plating.

The invention provides a portable deep-sea mining ship type, which includes a main hull, a straight-through splint arranged on the main hull, and a moon pool vertically penetrating through the main hull for deploying mining equipment and ore recovery operations, the moon pool It is arranged in the middle of the main hull. The stern of the main hull is square and the bow is a flying scissor type. Lateral channel thrusters, and the superstructure is arranged at the bow of the main hull. The invention provides a portable deep-sea mining ship type that can fully improve the utilization rate of the cabin capacity, reduce the drainage volume, and has a large deck area, while meeting the requirements on structural strength, general layout and performance.

The invention relates to a hippocampus-shaped bulbous bow type bow structure of a marine tug. The front part of a bulbous bow of the bow structure is positioned below a bow; the front end in the front of the bulbous bow is positioned at the rear part of the head end of a deck; the bulbous bow is hippocampus-shaped; one or more horizontal thrusters are mounted at the rear part of the bulbous bow of the bow structure; each horizontal thruster transversely penetrates through the rear part of the bulbous bow. The bow structure fully takes multiple factors such as ship resistance, sailing, arrangement, horizontal thruster mounting and using functions into consideration, so that compared with an oblique straight bow, the ship sailing economy is improved; the width of a part where a bow thruster is mounted is increased, so that the mounting of the large-diameter bow thruster can be facilitated, and the bow thruster can be conveniently arranged as far forward as possible to effectively improve applied moment of the horizontal thrusters; compared with the conventional bulbous bow type bow, after being close to an FPSO, a marine platform and other marine structures to perform pushing operation, the bulbous bow is free of collision with a pushed ship or a platform when the ship is in any longitudinal floating state, so that the head structure safety of the ship is ensured.

The invention discloses a ship anti-collision structure, wherein the bow of the ship adopts a first longitudinal skeleton structure, a transverse skeleton structure is arranged between the bow and theship anti-collision bulkhead, and a second longitudinal skeleton structure is arranged on the side of the anti-collision bulkhead away from the bow. By providing a transverse skeleton structure between the bow of the ship and the collision bulkhead, the invention can effectively partition the stress transmission when the bow of the ship is collided, avoid the stress transmission when the bow of the ship is collided to the hull structure, cause the deformation or damage of the hull structure, ensure the safety and stability of the ship operation, reduce the damaged area and the damage area ofthe ship, and reduce the loss of the shipowner.