72results about How to "Shallow draft" patented technology

An ultra-large truss type floating marine platform is composed of floating drums dispersed on water surface, a working platform above water surface, and connecting rods. Its advantage is high stability.

The invention relates to a modular maritime floating island, comprising multiple welded all-steel-structure floating box modules, rubber mats and linking cables, wherein the floating box modules can be square modules and rectangular modules, or can also be hexagonal modules; each module is provided with an upper linking boss and a lower linking boss; every two adjacent floating box modules are linked by one cable; a floating box body of each floating box module is divided into an upper layer and a lower layer; the lower layers are respectively and internally provided with a watertight compartment; the upper layers are respectively provided with a working and living room; the lower layers and the upper layers are correspondingly communicated by through cross channels; the sides of the channels are respectively provided with a staircase communicated with the upper plane of a floating box. The modular maritime floating island has the beneficial effects that the floating boxes can be modularly and massively produced, and are applied to maritime combination for infinite extension; the floating island has a strong capability of resisting stormy wave, is small in immersion depth and can be berthed on the bank side of a shallow sea or in a lagoon in a floating way; after a plurality of power modules are combined, the floating island can be positioned in a deep sea in the floating way; the modules which cannot be restored due to damage can be sunken into the sea bottom by unfastening the cables; each floating box module is provided with an independent rainwater collector and an independent septic tank; therefore facilities such as a community, a greenhouse, an aquaculture net cage and an airport can be built on a large floating island.

The invention discloses a foam platform for drilling on waterways. The foam platform comprises a machine station plate used for placing equipment, support legs used for supporting the platform, a drilling operation reserved hole and a hydraulic lifting system of the platform, wherein at least a square foam floating body is fixedly connected to the part below the machine station plate; the foam floating body is arranged in a steel frame; and the machine station plate is fixed on the steel frame directly or indirectly. The foam platform device for drilling on waterways has a simple structure, is connected firmly, can achieve rapid assembly, cannot be influenced by tides or water level changes, and is suitable for being used as a platform for conducting work drilling on waterways in areas, such as shallow water areas, offshore sea, and the like. Compared with a framework working platform, a ship type working platform, an oil drum type working platform, a raft type working platform, a lifting ship body type working platform, and the like, the platform device has remarkable advantages, can meet the use requirement of drilling work in areas influenced by water level lifting, such as offshore sea, river shallow water, and the like, and improves the working efficiency and the economic benefits of drilling on waterways.

The invention relates to a heat-preservation power life buoy. A life buoy body is in a U shape; a heating device, a propeller for providing power, and a remote controller for controlling the life buoy to move are arranged on the life buoy body; the life buoy body and an engine compartment on the life buoy body are arranged symmetrically; the propeller is rotatably arranged in the engine compartment. When a person fall into a river, a rescuer puts the life buoy body into water, and then controls the life buoy to move to a position where the person is located through the remote controller, so that the person who falls into the river can be quickly and conveniently rescued, and meanwhile, the temperature of the person who falls into the river can be recovered through the heating device of the life buoy; through the arrangement of the engine compartment and the propeller, any one face of the life buoy can be placed on water, so that the life buoy moves. With the use of the life buoy, the rescuing speed can be greatly improved, the person who falls into the river is protected, and the safety and the survival probability are improved.

The invention relates to a self-floating transportation method of a bridge box girder, belonging to the field of bridge manufacturing technology. The transportation method comprises the steps of launching and riverway transportation, and is characterized in that the self-floating transportation of the box girder adopts box girder sealing, ramp launching and a method for transporting the self-floating box girder by a power boat; the box girder sealing adopts a steel plate for hole-sealing welding, the steel plate is used for seal-welding a hole and an opening on a diaphragm plate of the box girder; air pockets are distributed at the bottom of the box girder, air charging leads the air pockets to upbear the box girder; the ramp launching adopts a windlass for tightening steel wire ropes so as to control the glissade of the box girder, the air pockets are charged with air alternately, the box girder is moved and launching is carried out along the ramp; and after connection with a self-floating steel box, the power boat carries out transportation in riverways. The method has the advantages of being simple, convenient and practicable, saving time and labor, having low cost and being applicable to the self-floating transportation of steel box girder with large size and weight and the like.

The invention discloses a reservoir sludge cleaning device. A sludge box is fixed to the top of a floating plate, a sludge pump is arranged at the upper end of the outer side wall of the sludge box, an output end of the sludge pump is connected to the sludge box through a sludge outlet pipe, a supporting plate is fixed to one end of the floating plate, a vertically arranged sludge suction pipe movably penetrates into a round hole of the supporting plate, the top end of the sludge suction pipe is connected to an input end of the sludge pump through a communicating pipe, a U-shaped plate is fixed to the supporting plate, a lifting mechanism is arranged on the top of the U-shaped plate and the U-shaped plate is connected to the sludge suction pipe through the lifting mechanism, a protective mesh enclosure is fixed to the bottom of the sludge suction pipe, a rotating rod is arranged in the protective mesh enclosure, the upper end of the rotating rod stretches into the sludge suction pipe,a plurality of spiral blades are fixedly connected to the upper end of the rod wall of the rotating rod, a plurality of slicers are fixedly connected to the lower end of the rod wall of the rotating rod, and a driving device is fixed to the bottom of the floating plate. It is not needed to discharge accumulated water in a reservoir thoroughly when the cleaning device is used, and the cleaning device is relatively convenient to use and relatively low in cost.

A spar type floating structure has an elongated floating section (2) and a ballast section (3) which is disposed at the floating section (2), and the spar type floating structure is configured so that the floating section (2) is caused to float while being held in an upright position by the weight of the ballast section (3). The floating section (2) has: a first expanded section (21) disposed at the lower part of the floating section (2) and expanded in the horizontal direction; a second expanded section (22) provided at the intermediate section of the floating section (2) and expanded in the horizontal direction; and a column section (23) for connecting the first expanded section (21) and the second expanded section (22) and extended to the water line. The first expanded section (21) forms the ballast section (3), and the second expanded section (22) forms a floating body which applies a buoyant force to the floating section (2).

A three-floating body type semi-submersible platform comprises an upper portion platform and lower floating bodies which extend along the upper portion platform longitudinally; vertical columns are connected between the upper portion platform and the lower floating bodies; the lower floating bodies are floating cylinders which are in slender shapes; three floating cylinders are horizontally arranged along the upper portion platform; the central line of the middle floating cylinder and the longitudinal section of the upper portion platform are in the same plane; the two outside floating cylinders are symmetrically arranged on bilateral sides of the middle floating cylinder; at least two vertical columns are connected between the upper portion platform and every floating cylinder; the vertical columns are arranged along the longitudinal direction of the floating cylinders in an interval mode; the middle floating cylinder and the two outside floating cylinder or the vertical columns on the middle floating cylinder and the vertical columns on the two outside floating cylinders are respectively connected through at least two horizontal supports. The three-floating body type semi-submersible platform has the advantages of being high in integral strength and rigidity, stable in stormy weaves and suitable for shallow water environment, enabling the integral strength and rigidity of the platform to be guaranteed and enabling platform stability in the stormy weaves when being a large sized platform with the size of several hundred meters to be guaranteed due to the fact of a three-floating-body type arrangement structure.

A construction method for hoisting and installing prefabricated bagged sand includes the following steps that (1) sand bags are filled on a deck barge; (2) a crane ship enters a dam construction position; (3) the sand bags are lightered to the crane ship through the deck barge, and the deck barge is berthed; (4) after the deck barge is berthed, pull rings on the two sides of each sand bag are arranged on lifting hooks on the two sides of a hanging bracket in a sleeved mode one by one; (5) after hoisted by the crane ship, the sand bags are shifted into a designated position on an operating water surface; (6) the hanging bracket is folded to a herringbone shape through a crane, and the sand bags slide into designated positions in water; (7) the crane carries with the hanging bracket to return to the position of the sand bags on the deck barge, and the hanging bracket is special for recovery of flat shapes of the sand bags; (8) the steps four to seven are repeated until all the sand bags on the deck barge are hoisted one by one. The method has the advantages that construction efficiency is high, losses are small after a single sand bag is damaged, and the forming speed is high in the shallow water area, and the bagged sand dam core filling construction efficiency of the shallow water area is improved. According to the test, throwing and filling quantity per day can reach 4000 m<3>, and construction efficiency is improved by about 60 percent.

The invention relates to a quick detachable dual body rescue ship which belongs to the on-water rescue equipment field. The left and right float, front and back linking bridge of the quick detachable dual body rescue ship is designed as the modularized structure which can be transport by car or by boat after the detachment so to achieve long distance and transportation of the ship. Electric devices are installed inside both float to drive the propeller so that the ship can sail on its own. The rescue ship is small sized and light with a light water level. The ratio of crane weight to the weight of itself is 0.45 which is seven more times than the existing craning ship does. It is adapted to the service in rivers, lakes and short-sea not only for the navy but the civil use. It is a vital facility in fleet water rescue.

The invention discloses a three-stand-column type offshore wind power generation platform system which comprises a draught fan system, a floating foundation and a mooring system, the draught fan system comprises a draught fan tower, and the draught fan tower stands in the center of the upper portion of the floating foundation; the floating foundation comprises three stand columns and a center disc, the three stand columns are distributed in an equilateral triangle shape, the center disc is arranged in the centers of the three stand columns, the center disc is connected with the upper portion of each stand column through an upper box type structure, and the lower portions of the stand columns are connected with one another through bottom buoyancy tanks to form a stable equilateral triangleshape. The floating foundation operation is shallow in draught and wide in water depth application range, can be applied to wide sea areas of 40 m or above, meets the performance of stability, movement, structure and the like by changing the size and span of structural components under the condition of guaranteeing shallow draught, is suitable for supporting offshore wind turbines with various powers, and is expanded to 10 MW and higher-power offshore wind turbine types.

The invention discloses a swing arm type crane barge for mounting wind power equipment, which is characterized by comprising a barge body, wherein the center of the barge body is provided with a portal arm support; the portal arm support is composed of a left and a right truss upright posts, a truss cross beam and a pulley cross beam; the lower ends of the left and the right truss upright posts are hinged with a hinged support on the barge body; the upper parts of the left and the right truss upright posts are respectively connected with a front and a back decks of the barge body through a front and a back radius-changing mechanisms; the lower parts of the left and the right truss upright posts are provided with two sets of hoisting mechanisms, including winding machines; the hoisting mechanisms are provided with wire ropes; the wire ropes bypass two sets of fixed pulley blocks in the pulley cross beam to drive two sets of hook pulley blocks to vertically move; and both sides of the barge body are respectively provided with an impeller-type thruster and a skid mounted thruster. The invention has the characteristics of light weight and light draught, can be aground, and is suitablefor operation and construction in intertidal zones.

The present invention relates to one kind of propulsion unit and belongs to the field of propulsion technology. The propulsion unit includes one oar body and oar blades mounted on the oar body. The oar blade can rotate freely in limited range around the joint site with the oar body, and is opened to vertical state to the oar body during rotating forward and is folded to contact with the oar body during rotating backward. The oar body is connected to the power device via a driving device so as to reciprocate back and forth and drive the oar blades to push water backwards for the boat to go forward. Changing the oar blade opening direction can realize deceleration, stopping or retrogression. The present invention has the advantages of small resistance, great propulsion force, etc and may be used widely.

The present invention provides a method for preventing secondary pollution in a special water purifier of a drinking machine. A lower barrel of the water purifier is made into a closed container structure; all the air entered the lower barrel is purified through waterseal method to remove dust, bacteria and other harmful substances in the air; the water used in the waterseal process will be re-purified through the filter core of the water purifier to remove harmful substances in the water and finally enters into the lower barrel. The invention also provides a special water purifier for drinking machines using the above method. The main effect of the invention is to prevent the purified water in the lower barrel of the water purifier being polluted again, so as to extend the storage period of the purified water.

The invention discloses a magnetic suspension deformable ground effect aircraft carrier, which comprises a hull and a ship bottom surface, wherein the ship bottom surface is a planar structure, a rib is longitudinally arranged on the ship bottom surface, and the lower end of the rib is provided with a flat plate type manger board in parallel with the ship bottom surface; the back end of the hull above the water line is provided with an abovewater propelling plant, while the back end of the hull below the water line is provided with an underwater propelling plant; and the surface of the hull, the surface of the rib and the surface of the manger board below the water line are evenly paved with magnetic suspension resistance absorbers. A plurality of the hulls can be connected together transversely through adjoining planes. The aircraft carrier has short construction period, low cost and strong maneuverability, can be assembled and disassembled as required by a war, and has strong anti-strike capability. Besides, the aircraft carrier does not need a catapult and a check cable, can carry rich variety of aircrafts, has shallow draft and can run in a shallow sea and an inland river.

The invention discloses a platform moon pool damping device which comprises a shock absorption cabin and a shake absorption cabin which are arranged on the transverse inner walls at the two ends of a moon pool and separated through a watertight separation board. Multiple rows of damping blocks distributed in a staggered manner are transversely arranged on the outer wall of the shock absorption cabin and the outer wall of the lower portion of the shake absorption cabin respectively. Multiple wave stop columns are arranged on the outer wall of the lower portion of the shake absorption cabin. Three separation boards are arranged in the shake absorption cabin from top to bottom. Multiple rows of vertical wave elimination blocks horizontally distributed in a staggered manner are transversely arranged on the upper sides and the lower sides of the separation boards and the inner wall of the shake absorption cabin bottom. The separation boards are provided with vertically-corresponding wedge blocks towards the outer end of the platform moon pool. Multiple rectangular openings are formed in the shock absorption cabin outer wall and a vertical wall board of the shock absorption cabin respectively. Multiple rows of horizontal wave elimination blocks vertically distributed in a staggered manner are transversely arranged on the inner walls of the two longitudinal ends and a vertical wall board of the moon pool. The shock absorption cabin and the shake absorption cabin can guarantee that a platform works safely and stably under different working conditions. The wave stop columns arranged on the outer wall of the lower portion of the shake absorption cabin can effectively resist incoming flow impact, the kinetic energy of waves is weakened, incoming flow is inducted to move towards the bottom of the moon pool, and formed vortexes in the moon pool are reduced.

The invention relates to a high-speed air cushion ship, belonging to the ship technique, wherein said invention comprises a ship hull and mechanical pushing screw mounted at the stern of ship hull; the bottom of hull is flat while the middle part is the main air chamber whose bottom is open; two sides of main air chamber are mounted with stabilize air chambers whose bottoms are open; the hull has air boost device whose high-pressure outlet is through to the main air chamber and the stabilize air chamber; the bottom of ship that at the back of main air chamber is mounted with several diversion grooves concave upwards. The invention has low sailing resistant, simple structure and the application in common or military transportation.

The invention discloses a method for prefabricating pipe joints of an immersed tube tunnel. The method comprises the following steps that 1, steel bars are bound in a shallow dry dock, and the pipe joints are poured; 2, a steel end shell, a steel end sealing wall and a guiding device are arranged at the two ends of each pipe joint; 3, a waterproof layer of each pipe joint is constructed; 4, prefabricated plates are prefabricated in a prefabricated site beside an assembling platform; 5, a dock door is opened, the pipe joints are conveyed to the assembling platform in a floating mode, and a hoisting system is arranged on the assembling platform; 6, the prefabricated plates are hoisted to the corresponding positions of the pipe joints through the hoisting system; 7, the waterproof layers areapplied above the prefabricated plates; and 8, the pipe joints are dragged to designated positions for reassembling and then sinking. According to the method, the pipe joint floating process is shallow in draft depth, the temporary project is little, the dredging amount in water or dredging is not needed, the environment influence is small, and streamlined operation can be carried out.

The invention relates to a combined folded bicycle water walking boat which comprises a bicycle. The two sides of the front and rear wheels of the bicycle are connected with reversible external frame bodies respectively; the external sides of the external frame bodies are connected with internal frame bodies capable of being accommodated in the external frame bodies; a drive wheel arranged beside the rear wheel of the bicycle is in contact with the rear wheel of the bicycle; a screw propelling device which is used for propelling the walking boat to move on water is arranged on the lower side part of the rear frame body; the drive wheel drives the screw propelling device to run through an intermediate driving mechanism; and the external frame bodies on both sides of the front and rear wheels of the bicycle can be connected and combined into the whole boat. The walking boat integrates a bicycle and a water boat, and has the advantages of convenient use and carrying, simple structure, low manufacturing cost and good utilization effects.

The invention discloses a lift propeller ship and relates to a novel ship. The invention discloses the novel ship, which has the principle that by utilizing the special fluid mechanical properties of propellers on an interface between two fluids (water and air), the bottom part of the ship is provided with a set of vertical lift propellers (2); the ship (1) is lifted out of a water surface by lift generated when the vertical lift propellers (2) work, so that the ship (1) is always in the state of floating on the water surface, thereby, the resistance when the ship sails is greatly reduced. In order to eliminate the influences generated by waves, the vertical lift propellers (2) are connected through a hydraulic system, and the pressure of each propeller is evenly distributed. The ship forwarding power is provided by a propulsive fan (3) arranged at the stern part of the ship, and in order to improve the propulsive efficiency, a water curtain pressurization device (4) is arranged at the rear of the propulsive fan (3). As the block coefficient of the ship body approaches to 1, the draft of the ship is very shallow when the ship is anchored, and the draft requirement on an anchoring dock is reduced.

The invention relates to an unmanned boat for removing marine floating garbage. The unmanned boat comprises a main boat, a sub boat, a garbage surrounding gate, garbage collecting devices and a garbage surrounding gate releasing device; one end of the garbage surrounding gate is wound on the garbage surrounding gate releasing device, and the other end of the garbage surrounding gate is connected with the tail part of the sub boat; the garbage collecting devices are rollers; the outer wall of the roller is provided with a plurality of groups of collecting row forks arranged in the axis direction of the roller and arranged in a comb shape, each group of collecting row forks comprises a plurality of spokes, and the side, away from the roller, of each spoke is provided with a bending which deflects to the direction opposite to the rotating direction of the roller; and the two sides of the main boat are provided with concave parts for accommodating the rollers, the upper ends of the concaveparts are provided with collecting plates which extend upwards obliquely, slits are machined in the end parts of the collecting plates, the width of the slits is matched with the width of the spokes,and when the roller rotates, the spokes can just pass through the slits. According to the unmanned boat, the sub boat can adopt a micro remote-control water surface vehicle, the draft is shallow, thesub boat can easily reach the shoal where the main boat cannot reach, the towing assistance of the main boat is added, the power requirement of the sub boat is low, and the endurance time of the subboat can be greatly prolonged.

The invention discloses a water jet propulsion wheel type amphibious unmanned ship which is characterized by comprising a ship body, a battery pack, a water jet propulsion device and a wheel type walking device. The battery pack, the water jet propulsion device and the wheel type walking device are arranged on the ship body; the wheel type walking device comprises a drive unit, at least one frontwheel drive unit, a pair of back wheel drive units, at least one tire steering unit and a tire reeling unit; the front wheel drive unit and the back wheel drive units are rotatably arranged on corresponding positions of the front side and the back side of the ship body; a tire is rotatably arranged on the front wheel drive unit through the tire steering unit; a tire is rotatably arranged on each back wheel drive unit; an output shaft of the drive unit is connected with input shafts of the front wheel drive unit and the back wheel drive units; output shafts of the front wheel drive unit and theback wheel drive units are connected with axles of the tires; and the tire reeling unit drives the front wheel drive unit and the back wheel drive units to rotate around rotation axes of the tire drive units. The water jet propulsion wheel type amphibious unmanned ship provided by the invention has a favorable shallow water through capacity aiming at the shallow water environment.