132 results about "Self propulsion" patented technology

A skateboard for use on pavement, ice or snow using a single narrow-footprint wheel, ice-blade or ski-runner attached to each foot, thus requiring the rider to dynamically balance the board. The skateboard is capable of self-propulsion at considerable speed on the flat or uphill by using an undulating motion. It can also lean up to 30 degrees and has a steering circle of only two feet. The board's construction comprises a front footboard, a rear footboard, and a strut which connects the two footboards and resists bending and extension. Each footboard includes a footpad, an attachment (i.e. a wheel, blade or ski), and a pivot joint connecting to the strut. The axis of this joint is aligned perpendicular to the footpad which allows the rider to steer each footboard independently by torsionally rotating the lower leg.

The invention belongs to the technical field of ship manufacturing, and specially relates to a method for a ship ice-breaking test in real water area. The method comprises the steps that (1), two water areas are formed in a planned test area on the river surface, wherein the length and the width of each water area are 50 m and 10 m correspondingly, and a laboratory containing test equipment and testers is built; (2), two cable towing mechanisms are fixed to one end of an ice tunnel correspondingly, a ship module is adjusted to a marked ballast waterline at the other end, and arrangement, connection and debugging of the test equipment are conducted; and (3), the cable towing mechanisms tow the ship module to move at a constant speed, and open-water resistance and the like of the ship module in still water are measured. The method is applied to resistance tests of the ship module in a level ice zone and a broken ice zone, a self-propulsion test of the ship module and the like, and can accurately measure parameters, such as total resistance, resistance components, sinkage, trim, propeller thrust and torque and main motor power, of the ship module when the ship module sails in the ice zones.

A roller ski allowing the skier to slide laterally in a manner similar to a snow ski. The system includes at least one ski and it would attach one foot per ski. Each ski has an optionally height and longitudinal angularly adjustable center platform for fixturing the skier's foot with an optionally releasable ski binding system, an optionally height and longitudinal angularly adjustable front tip and rear tail for attaching at least four fixed wheels, and at least two biased pivoting casters which are all positioned along the center platform's longitudinal axis. The fixed wheels function similarly to conventional roller skate trucks. The casters rotate to align themselves with the direction of force exerted on the center platform. The casters are spring biased to align them selves with the longitudinal axis of the center platform. A height differential between the wheels and rollers enables the skier to transfer weight from one to the other, alternating between the carving and sliding characteristics of snow skis. Another option is at least one ski pole for increased ease of skier balance and self propulsion, with modified tips to accommodate more surfaces than just snow.

A self-propelled, robotic power generating system remains submerged in deep water areas, tethered within steady-state, generally unidirectional sea currents in non-tidal areas for the continuous production of turbine-generated electricity that is transmittable by multipurpose undersea power cable to onshore electric grids. System aspects include a shore-to-system communication means to remotely manage all system functions; a sea current intake consisting of a cone-like, retractable current amplifier to significantly increase the energy density of the currents passing through the amplifier to the turbine; a self propulsion means to move the system to maintain a desirable location within a prescribed area that may be subject to meandering currents; a snorkel-like vertical air conduit for ballast control; a seawater pumping means for ballast control; a retractable marine wildlife protector to cover the sea current intake; and a remotely retractable anchor means to maintain the generating system in a target position for extended time periods.

The invention provides a thrust/torque measuring device for a pod test. The thrust/torque measuring device comprises a main shaft, wherein one end of the main shaft is directly connected with an internal motor of a cabin, and the other end of the main shaft is connected with a thrust/torque sensor; the thrust/torque sensor is divided into a thrust measuring section and a torque measuring section and is connected with a propeller mounting shaft; a propeller is directly mounted on the propeller mounting shaft; thrust and torque generated by the propeller are directly measured by the thrust/torque sensor. The thrust/torque measuring device is simple in structure; the thrust/torque sensor can be mounted by abutting against the propeller; the device is small and compact in form, can be conveniently arranged in the cabin for use, and is high in measurement accuracy; the interference of two component forces is small; the measurement error of measuring the thrust and the torque by a conventional self-propulsion instrument caused by shaft system friction is eliminated, and the device plays an important role in deep research on the experiment of a pod propeller.

The invention provides a rotatable self-propulsion-type anti-wind-wave deep water cage, and belongs to the culture technical field. The deep water cage comprises a central steel pipe, a supporting framework, a mesh, inflating pontoons, a propelling system, a composite cable, an anchorage ground mooring rope, an anchorage block, a propeller, a hydraulic motor, a rotary connector and a bait casting device. The supporting framework is installed on the central steel pipe, the mesh is arranged on the surface of the supporting framework, two ends of the central steel pipe are fixed on the anchorage block through the anchorage ground mooring rope and installed on the seabed, the propelling system is installed at the right of the central steel pipe, a plurality of the inflating pontoons are installed on the supporting framework, and the composite cable is connected with the propelling system, the bait casting device and the inflating pontoons. The deep water cage has a function of vertically ascending and descending, can avoid influences of wind waves on the sea, can rotate in the transverse axial direction, and brings convenience to cleaning of attachments on faces of the cage. The cage is propelled to move by means of the hydraulic propeller, and accordingly culture in the cage can be popularized in a large scale.

The invention relates to an unmanned surface vehicle, in particular to a hybrid power fast unmanned monitoring boat. The hybrid power fast unmanned monitoring boat comprises a boat body, a mast, a power and propulsion system, an energy system, a control and navigation system, a communication system and a load monitoring system, wherein the energy system and the power and propulsion system are arranged inside the boat body, the mast is arranged on the upper portion of the boat body, and a wireless and satellite communication antenna, a meteorological monitoring load and a satellite navigation terminal are arranged on the mask. The power and propulsion system comprises a diesel engine, an electric motor, an electric generator, a hybrid power gearbox and a water-jet propeller, wherein the diesel engine and the electric motor are connected with the two input ends of the hybrid power gearbox through two clutches respectively, the output end of the hybrid power gearbox is connected with the water-jet propeller, the water-jet propeller is arranged on the stern of the boat body, and the electric generator is connected with the diesel engine. The hybrid power fast unmanned monitoring boat has the advantages of achieving unmanned operation and self-propulsion observation, high-speed cruising and low-speed monitoring can be achieved by adopting hybrid power, and efficient utilization of the energy can be achieved.

Provided is a mobile harbor capable of loading and unloading cargo with a ship being at anchor in the sea far from the shore, not coming alongside the pier of a stationary harbor. The mobile harbor includes a self-propulsion apparatus and a loading/unloading apparatus such that cargo can be loaded from a ship to a mobile harbor or unloaded from the ship to the mobile harbor after the mobile harbor comes alongside and couple to the ship far from the land.

The invention discloses a self-propulsion trailing suction hopper dredger. The self-propulsion trailing suction hopper dredger comprises a dredger body; a movable cover is provided with a driving pressing block; a second driving device is arranged at the top of the driving pressing block; the movable cover is internally provided with a translation mechanism; the translation mechanism is provided with a movable through hole; a rake tooth shell is arranged in the movable cover; the rake tooth shell is internally provided with an engagement block; rake teeth are arranged on an inclined plane of the engagement block; a fixed plate is arranged on the top surface of the engagement block; positioning shafts are arranged on the two sides of the fixed plate; a first high-pressure water spraying device is vertically arranged on the inner side of the movable cover; and a second high-pressure water spraying device is obliquely arranged at the outer end of the movable cover. The first high-pressure water spraying device and the second high-pressure water spraying device are matched with each other and spray water to each other, so that underwater soil blocks are loosened; meanwhile, the rake teeth are driven to move up and down; one section of notch is opened underwater, and hard sludge can be conveniently raked when the rake teeth rake the sludge, so that digging resistance of a rake head is reduced, and the digging capability and dredging efficiency of the rake head are improved; and the self-propulsion trailing suction hopper dredger has the effects of high sludge digging efficiency and low production cost.

A wheelchair or a vehicle for sand or loose soil comprises one or more skids, each equipped with a spring-loaded roller or roller plate. Examples of the vehicle include a wheelchair and a planetary rover. Preferably, a beach, shower or pool wheelchair comprises two front skids in place of front wheels. The skids provide a resistance-free, broad footprint in the sand and a low-resistance narrow footprint when used on hard, e.g. boardwalk, surfaces. A wheelchair may further comprise a lightweight, easy to fold frame, which closes like a pair of eyeglasses. Still further, a wheelchair may provide a removable and reclining lounge chair seat to allow the user to exit the wheelchair to enter the water or sit and recline on the sand. In addition, dog bone or dumbbell shaped wheels provide the wheelchair strong, lightweight support and a wide footprint and can be equipped with grip notches for user self-propulsion. The inventive wheelchair provides the user with a combination of improvements, which respect the user's grace and dignity.

A method and apparatus for an electronic equipment rack that provides mobility through directional self-propulsion and multi-axis suspension. The electronic equipment rack further provides self-powered operation and environmental control with wireless access, while protecting against unauthorized access, electromagnetic interference (EMI), and dust contamination. An alternate embodiment provides a non-mobile electronic equipment rack with multi-axis suspension, while optionally providing wireless access and protection against unauthorized access and the environment.

The invention relates to a self-propulsion type submarine topography and landform mapping system and method based on perception driving and belongs to the technical field of mapping of submarine topographies and landforms, mainly aiming at solving the problems that a detection region covered by a detection track is not complete when mobile observation equipment executes a mapping task. The self-propulsion type submarine topography and landform mapping system comprises an underwater self-propulsion type mapping system and a shore-based unit, which are connected through a communication module. The working process comprises the following steps: issuing the mapping task; carrying out sonar data acquisition on the submarine landforms; carrying out characteristic analysis and extraction on acquired sonar data to obtain a pose point of the mobile observation equipment; processing the pose point by a PD-SLAM unit; and after scanning, outputting a submarine topography and landform graph. The self-propulsion type submarine topography and landform mapping system has the advantages that the working efficiency is high, a target region can be comprehensively measured, and fine characteristics of the underwater topographies and landforms can be accurately and rapidly mapped, so that self-propulsion type comprehensive measurement of the submarine topographies of the target region is really realized.

The invention relates to an underwater self-propulsion omnibearing sensor capable of carrying out omnibearing sensing and autonomous sailing in the water, belonging to the field of underwater aircrafts. In the invention, the problem of carrying out omnibearing sensing on water surface and above the water surface for a long time and sensing in the complex environment below the water surface can besolved. The sensor provided by the invention comprises a camera, a floodlight, a camera holder, a control computer, a lithium battery pack, a motor and reducer assembly, a right control plane, a right electric steering engine, a motion controller, a pump injection propeller, a data line, a spinning reel, a power shaft, a spline sleeve, a left electric steering engine, a left control plane, an aluminium shell, a depth sensor, an inertia measuring unit, a wireless transmission radio station, a communication module, a light inlet protective cover and a GPS (global positioning system) receiver. The sensor provided by the invention can receive a remote control command or preset command from a remote monitoring control terminal, and omnibearing long-term real-time sensing on water surface and real-time sensing in the complex environment in the water can be realized under the control of the control computer and the motion controller.

The invention relates to a self- propulsion type concrete mixing ship. In the invention, the front part of an inner cabin of a deep-cabin cargo ship is provided with an aggregate bin, and the back side of the aggregate bin is provided with a grappling bucket hanger; the middle part of the inner bin of the deep-cabin cargo ship is provided with a proportioning machine, a water storage tank, a concrete stirrer, a water reducing agent tank and a concrete transportation pump; and the back part of the inner bin of the deep-cabin cargo ship is provided with an integral type steel sealed filler bin, a discharge port at the bottom of the steel sealed filler bin is connected with a feeding mechanism of a first spiral conveyer, a discharge pipe at the back end of the first spiral conveyer is connected with a feed pipe at the front end of a second spiral conveyer, and a discharge pipe at the back end of the second spiral conveyer is positioned above a measuring hopper at the top part of the concrete stirrer. The invention reasonably arranges various kinds of concrete mixing equipment in the deep-cabin cargo ship, is an integrative self-propelled type mixing ship integrating the storage, the metering, the transportation, the stirring and the pumping of raw materials, such as aggregates, powder, water, an admixture and the like, can meet the basic requirement that stock preparation of one time can pour for large square quantity, and has the characteristics of overwater maneuvering flexibility, independent voyage, quick positioning, large production capacity of concrete, good stability, low cost input and the like.

The invention relates to a hydraulic towing machine device. The hydraulic towing machine device comprises a pedestal. The two sides of a base of the pedestal are provided with wall frames respectively. A crane span structure is arranged between the two wall frames. Load shaft devices are symmetrically installed between the two wall frames in parallel. The outer end of the wall frame on one side is provided with a hydraulic driving device. The output end of the hydraulic driving device is provided with a clutch device which is supported by the crane span structure. The load shaft device is provided with a brake device. The hydraulic towing machine device is compact and reasonable in structure, convenient to operate and good in use reliability. The hydraulic towing machine device is composed of a mechanical part, a hydraulic part and an electric part and is mainly used for reeling and unreeling cables and towing ships and offshore facilities without the self-propulsion capability. A towing machine is automatically operated through hydraulic pressure, the automatic towing machine can automatically detect the tension force of the cables and the length of the unreeled cables and automatically adjust cable reeling and unreeling according to the change of the tension force and the unreeling length of the cables, and hydraulic oil cylinder braking is adopted in engaging, disengaging and braking of the towing machine.

The invention relates to a floating liquefied natural gas (FLNG) production, storage and unloading device adaptive to adverse sea conditions, comprising a boat body, FLNG upper equipment arranged on a boat body deck, a cargo hold arranged in the boat body, an inner turret single-point cabin arranged at the inner head part of the boat body, an inner turret single-point system arranged in the single-point cabin, and a propelling system arranged at the tail part of the boat body, wherein the FLNG upper equipment and the cargo hold are used for realizing basic functions of production, storage and unloading of the production, storage and unloading device; the inner turret single-point system has a single-point positioning function and can perform single-point disengagement and tie-back under adverse sea conditions; the propelling system comprises multiple pieces of full circle swinging propelling equipment and is used for providing self-propulsion power of the production, storage and unloading device, and can adjust an included angle between the boat body and a wave direction or wind direction during transmission operation. According to the floating liquefied natural gas production, storage and unloading device, quick disengagement and tie-back can be realized, under the adverse sea conditions, such as typhoon, self-propulsion by the propelling system of the device can be performed to get away from a sea area where the typhoon passes, and safety of all systems of the device and workers is effectively protected.

The invention provides a large-amplitude motion follow-up five-degree-of-freedom airworthiness instrument, which comprises a frame, wherein transverse guide rails are arranged at the two ends of the frame, and are provided with transverse moving trolleys; transverse motion measuring devices are arranged on the end parts of the transverse guide rails; a longitudinal guide rail is arranged between end part connecting plates of the two transverse moving trolleys; two longitudinal moving trolleys are arranged on the longitudinal guide rail; longitudinal oscillation measuring and converting devices are arranged at the two ends of the longitudinal guide rail; heaving motion measuring rod guide devices are arranged on the upper and lower parts of the two longitudinal moving trolleys; heaving measuring and converting devices are arranged on the two longitudinal moving trolleys; transverse swinging and longitudinal swinging measuring devices are arranged at the lower ends of heaving motion measuring rods. By adopting the large-amplitude motion follow-up five-degree-of-freedom airworthiness instrument, course stability control and multi-degree-of-freedom motion measurement can be performed on a self-propulsion model under wave facing and oblique wave conditions on the premise of little constrains on a model, and the influence on motion of each degree of freedom of the model is little.

A safety device for a cylinder holding gaseous fluids under pressure is disclosed. The safety device has a device body in which a passage is defined for a fluid; the passage extends from an entry aperture, suitable for being placed in fluidic communication with a cylinder, to an exit aperture. An obturator air tightly engages the passage, the obturator is movable from a first position, in which it indicates the presence of fluid at a pressure below a first predefined pressure threshold value, inside the cylinder, and a second position, in which it indicates the presence of fluid at a pressure above the first predefined pressure threshold value inside the cylinder. At least one temperature and/or pressure-sensitive relief device is positioned in the obturator in such a way that, upon exceeding a predefined temperature threshold or upon exceeding a second predefined pressure threshold, the relief device opens the passage for the fluid and permits the flow of fluid from the entry aperture towards the exit aperture.

A mobile object being a vehicle of any type includes a plurality of force generators, enclosed in a hermetically sealed generator chamber filled with a pressurized gas, and a plurality of engines. Each force generator being a lift device comprises a rotor, which includes a shaft, a rotary shell having an open bottom, and a means supporting the gas in relative equilibrium inside said rotary shell, and a stationary means closing said open bottom of said rotary shell. The specific coordination of the members of said force generator supports the gas on the lower surfaces of the force generator in relative equilibrium and hence produces the maximum difference between the pressures of the gas acting on the lower and upper surfaces of said force generator, i.e. the maximum lift. The force generators, enclosed in said generator chamber, produce the self-action force of said mobile object in accordance with the self-action principle of a solid-fluid body that has been established recently. By controlling the direction of the shafts and angular velocities of the force generators the mobile object can accelerate momentarily in any direction in space. The enclosure of the force generators in the generator chamber makes the self-action force of the mobile object independent of outer environment surrounding it. Any source of energy can be used for self-propulsion of the mobile object due to the direct conversion of the rotational energy into the self-action force without the use of material jets, reactive or external forces.

The invention discloses a self-elevating wind power generation work boat which mainly comprises a boat body, a leg and a lifting system. The leg is arranged in the boat body penetratingly and is matched with the same through the lifting system. A deck living area, a main crane and an auxiliary crane are arranged on the boat body; the deck living area is set on a stern of the boat body and the main crane and the auxiliary crane are disposed on the same side of the boat body. The self-elevating wind power generation work boat has the advantages that the work boat has high variable load, hoisting capacity of the work boat is improved while safety reliability thereof is enhanced further since the main crane and the auxiliary crane are disposed on the same side of the boat body, self-propulsion capacity of the work boat is achieved through an added power positioning system, and thus problems of the prior art are solved effectively.