204 results about "Capstan" patented technology

A winch (1), a vehicle including the same and a method of operating associated thereto. The winch (1) is used with a strap (15) for fastening a load onto a transportation vehicle, and comprises a tightening assembly (3) and a gear assembly (5). The tightening assembly (3) comprises a support structure having first and second support flanges (7, 9) and a cross member (11) extending between the flanges (7, 9). The cross member (11) is devised for mounting onto a corresponding side track of the vehicle. The tightening assembly (3) also comprises a tightening reel (13) for receiving a portion of the strap (15) to be tightened about said reel (13), the tightening reel (13) being pivotally mounted onto the first and second support flanges (7,9). The gear assembly (5) is operatively connected to the tightening assembly (3), and comprises a gear (17), a worm (19), and a casing (21). The gear (17) is securely mounted about the tightening reel (13) so as to rotate with said reel (13). The worm (19) is positioned adjacent to the gear the worm (17) is threadedly engaged with the gear (19) so that a rotation of the worm (17) drives the tightening reel (13) via the gear (17), along opposite directions of rotation, for either fastening or unfastening the strap (15) onto the tightening reel (13). Excess portion of the strap 15 may be wound about a winding assembly (27) which is removably mountable onto the tightening assembly (3).

An apparatus for lifting and moving a load. The apparatus comprises a lift frame having a first and second vertical member that are connected so that a working window area is defined. The apparatus further comprises a rotary actuator mounted on the first vertical member, and an arm having a first end and a second end, and wherein the first end of the arm is pivotly connected to the rotary actuator. The arm is pivotal from an area exterior of the working window area to an area within the working window area. The apparatus may further comprise a winch, operatively attached to the arm, for lifting a load with the cable. A method of lifting a load is also disclosed.

A multi purpose hoisting device for use on a floating vessel having a deck, including: a load bearing structure to be mounted on the vessel; a main hoisting mechanism for raising / lowering an object above the deck and including: at least one main hoisting winch; an upper cable pulley block supported by the load bearing structure; a travelling cable pulley block; a main hoisting cable associated with the at least one main hoisting winch and passed over pulleys of the upper cable pulley block and of the travelling pulley block in a multiple fall configuration, such that the travelling cable pulley block is moveable relative to the load bearing structure by using the at least one main hoisting winch; a main hoist heave compensation mechanism associated with the main hoisting cable for damping the effect of sea-state induced motion of the vessel onto an object supported by the main hoisting cable.

A winch (1), a vehicle including the same and a method of operating associated thereto. The winch (1) is used with a strap (15) for fastening a load onto a transportation vehicle, and comprises a tightening assembly (3) and a gear assembly (5). The tightening assembly (3) comprises a support structure having first and second support flanges (7, 9) and a cross member (11) extending between the flanges (7, 9). The cross member (11) is devised for mounting onto a corresponding side track of the vehicle. The tightening assembly (3) also comprises a tightening reel (13) for receiving a portion of the strap (15) to be tightened about said reel (13), the tightening reel (13) being pivotally mounted onto the first and second support flanges (7, 9). The gear assembly (5) is operatively connected to the tightening assembly (3), and comprises a gear (17), a worm (19), and a casing (21). The gear (17) is securely mounted about the tightening reel (13) so as to rotate with said reel (13). The worm (19) is positioned adjacent to the gear (17) and operable between a first configuration where the worm (17) is away from the gear (19), and a second configuration where the worm (17) is threadedly engaged with the gear (19) so that a rotation of the worm (17) drives the tightening reel (13) via the gear (17), along opposite directions of rotation, for either fastening or unfastening the strap (15) onto the tightening reel (13). Excess portion of the strap 15 may be wound about a winding assembly (27) which is removably mountable onto the tightening assembly (3).

Self-climbing, telescopic crane and a method for mounting pre-fabricated concrete towers of the type formed by a plurality of modules joined laterally to form diverse frustroconical segments that are subsequently stacked to form the tower, that comprises an external vertical column and another internal one that can move vertically via actuators. The top part of the internal vertical column terminates in a horizontally rotatable capstan, associated with a horizontal arm terminating at the opposite end in a pulley through which the hoist cable moves. The invention presented affords the main advantage of allowing mounting from inside the tower, dispensing with the need of expensive long-reach cranes to be operating over long periods, with a notable reduction in the economic cost and the mounting time of the tower, as well as allowing mounting to be carried out in unfavourable wind conditions.

Novel and advantageous pipelay reel systems and methods for use in laying flexible or rigid pipe or tubing in on and offshore operations. The pipelay reel system may have a pipelay reel having a drum arranged between two flanges. At least one flange of the reel may have a chute configured to receive an adapter coupled to a starting end of the pipe to be spooled on the reel. An initiation line coupled to a winch and intersecting the flange chute may be used to position the adapter with respect to a receiving end of the flange chute, and the reel may be rotated to pull the adapter down the chute to a latching end of the chute. Moreover, a latch may be used to secure the adapter in the chute such that the pipe may be spooled onto the reel.

A rope handling system for an offshore vessel for handling of synthetic rope (3) for heavy lifting and deployment operations offshore, the system comprising multiple winch drums (11) adopted for housing a predetermined length of rope (3), a spooling system (13, 17) to spool in and spool out rope on the drums (11), a transfer system comprising of sheaves (14, 21, 22) for leading the rope (3) between a drum (11) and a traction winch (15), the traction winch (15) comprising three or more sheaves (30), where the sheaves are arranged so that rope may be arranged from one sheave to the next substantially following a common tangent of the two sheaves and so that the rope rests against about half the circumference of each sheave, and where each sheave operated by an independent motor (32), and where a rope stopper (4) is arranged downstream of the traction winch relative to the drum (11) upstream of the traction winch, is described. A method for handling rope during heavy lifting and deployment operations, and a method for loading rope onto the system are also described.

The present invention represents a procedure for compensating the heave movement of offshore cranes. The dynamic model of the compensation actuator (hydraulically operated winch) and the load hanging on a rope are derived. Based on this model, a path-tracking control unit is developed. To compensate the movement of the ship / watercraft caused by waves, the heave movement is defined as a time-varying disturbance and is analyzed with respect to uncoupling conditions. With a model expansion, these conditions are satisfied, and an inversion-based uncoupling control law is formulated. To stabilize the system, an observer is used for reconstructing the unknown state by means of a force measurement. Furthermore, the compensation efficiency can be improved by predicting the heave movement. There is proposed a prediction method in which no ship / watercraft models or properties are required. The simulation and measurement results validate the heave compensation method.

A multi-function winch for handling multiple lines of the running rigging of a sailing yacht. The winch incorporates multiple winch drums capable of releasing, retrieving and storing working lines of the yacht. The multiple winch drums are mounted in an axially stacked relation on a single drive shaft. Individual ones of the drums can be engaged to be driven by the main shaft of the winch, while the others remain stationary or, where appropriate, free wheel and controllably release lines stored thereon. A rotatable selector lever, located at the top of the winch, is manipulated to engage a selected drum for driven operation. Level wind features can also be provided to assure neat and compact winding of retrieved lines.

A rotating superstructure includes: a front block on which a power unit that includes a prime mover; and a rear block on which a unit for raising and lowering a boom that includes a winch, a, and an arm. And the rotating superstructure is configured to be split into the front block and the rear block.

The invention relates to a device for a non-self-propelled ship to pass through a tunnel for a long distance. The device comprises a tunnel channel through which a ship to be towed passes, travellingrails arranged on the shore tops of the two sides of the tunnel channel, and a towing vehicle for towing the ship; a bollard is arranged on the ship to be dragged, the tractor is connected with the bollard through a traction cable, the tractor is arranged on the traveling rails, and the tractor moves along the traveling track to drive the ship to be dragged to move along the tunnel channel. The travelling rails are arranged on the shore tops of the two sides of the tunnel channel, the tractor moves along the travelling rails to drive the to-be-dragged ship to move along the tunnel channel, thestructure is simple, the technology is reliable, and implementation is convenient; the tractor is driven by electric power, so that the pollution of ship passage to the tunnel environment is reduced,and the safety and navigation efficiency of long-distance and narrow-navigation-slot driving are improved; and the electric capstan arranged on the tractor enlarges the amplitude of the water level of the tunnel adapted to the ship, and improves the navigation efficiency of the ship.

The road-towed heavy-load ferry may be produced in larger or smaller versions using the same design. Its basic embodiment can transport afloat loads exceeding 16 metric tons (17.6 tons) including its tow vehicle. The ferry essentially comprises three longitudinal hulls. Outboard hulls (12) pivot outward and inward to rest atop central hull (10). Thereby, the ferry is reduced to a width suitable for towing on public roads. Equipment for road towing includes telescoping towing tongue (32), and pneumatic-tired wheels (28) which remain intact afloat. Winch (40) enables kedging across shoal water or ground. The wheels extend below the deployed outboard hulls to assist in kedging by reducing friction, suction, and risk of hull damage. A water-ballast system counterbalances on-board loads and otherwise improves stability in adverse winds, waves, and currents. Hinged gunwales provide additional freeboard.

A method is provided for removing an abandoned marine platform from a seabed having an upper surface or mud line. The platform extends typically below the seabed and mud line. In order to remove the platform, frame sections are lowered to the seabed with a lift device. A movable cutter cable is fitted to the frame sections. At least a part of the cutter cable is positioned below the mud line. The cutter cable is moved relative to the frame sections to cut the platform below the mud line. Such movement can be a back and forth movement wherein the cutter cable moves in a first direction, stops and then moves in a second direction that is generally opposite the first direction. A lifting device can employ two vessels and two frames, each frame bridging from one vessel to the other. Winches can be used to provide movement to the cutter cable. These same winches can take up cable slack as cutting moves from one platform member (e.g. leg, jacket leg, piling, etc) to another.

A method of mooring a floating vessel having a fairlead stopper coupled thereto is provided. The method includes retrieving a line pre-reeved on the fairlead stopper, connecting the line to an upper end of a mooring line, retrieving a second end of the line, connecting the second end to a winch of the AHV, and hauling in the mooring line to apply tension thereto. Also disclosed are mooring lines and systems, including lines having tensioning connectors thereon, such as tri-plate connectors, for stretching lines.

The new boat ramp has a ladder-style frame having C-shaped elongated lateral side rails held in spaced apart parallel condition by C-shaped cross support beams. One end of the frame is a water end and the other end is a shore end. At least six hull roller assemblies are mounted on the side rails in laterally paired relationship across from each other and in longitudinally spaced relationship. One lateral pair is at the water end. Each assembly has a roller axle carrying a hull roller at each end. The assemblies are mounted so that their axles are in pivotable elevated transverse orientation above the side rails so as to provide hull conforming support for a boat. A keel assembly having a central keel roller of significant axial length in at the water end. The hull rollers of the hull roller assemblies at the water end and the keel roller are all located in such proximity to each other as to substantially preclude all contact by the bow of a boat against structural elements of the ramp at the water end other than the hull rollers and the keel roller. At the shore end is a braced winch assembly for loading boats onto the ramp. The components of the ramp are styled to permit parcel shipment to any location of all components in unassembled condition. Further, the components are easily assembled using well-known and widely used household tools.

The invention relates to an apparatus and a method for deployment of an object in a fluid, e.g. the sea, by means of at least a first and a second cable, to be connected to the object, the apparatus comprising winch means for reeling in and out the cables, in order to allow movement of the object with respect to the apparatus, characterised in that the apparatus is provided with a bundling apparatus for bundling the cables, when reeled out, in order to provide a single cable assembly between the apparatus and the object during deployment. The apparatus and the method according to the present invention is not only adapted for bundling cables when reeling out the cables during deployment, but the apparatus and the method are adapted for removing a bundling element from the cables when reeled in during recovery.

The invention relates to a recycling and laying device for a water body profile observation system. The recycling and laying device comprises a tail cable, a tension cable, a fixing piece and a workboat. A winch is arranged on the workboat and used for winding and unwinding the tension cable; the tail cable head is tied on a deck of a buoy body, and a tail cable shackle is buckled on a plastic-coated steel cable and located at the upper end of the plastic-coated steel cable and below an electric swivel and a communicator; the tension cable and the plastic-coated steel cable are arranged in parallel and are fixed through a fixing piece; the tension cable head is bound to the upper portion of the plastic-coated steel cable and located below the tail cable shackle, the length of the tension cable head is redundant, and the redundant length is not smaller than the distance from the fixed water depth position to the winch; and the tension cable shackle is connected with a first connecting piece. The plastic-coated steel cable and water body profile observation equipment can be well protected through the operation mode that the tail cable and the tension cable are combined, labor saving and convenience of field operation can be achieved, safety and reliability are high, and extremely high popularization value is achieved.

The invention discloses a quick cleaning device for yams. A feed opening is formed in one side of a box body; a filter screen is fixedly arranged in the box body; the feed opening is just opposite tothe filter screen; the other end of the filter screen is abutted against a cleaning tank; besides, baffles are fixedly arranged on two sides of the filter screen; the cleaning tank is also arranged inthe box body; a first motor is arranged at the bottom of the cleaning tank, in the box body, through a motor mounting seat; an output end of the first motor is connected with a belt, and the other end of the belt is connected with a belt pulley on a rotating shaft II; capstans are fixedly connected to two ends of the rotating shaft II; one end of each cable rope is fixedly arranged on the corresponding capstan, and the other end of each cable rope is fixedly connected to a cleaning frame; and the cleaning frame is arranged in the cleaning tank through the cable ropes; a second motor is arranged outside the cleaning tank, a rotating shaft III is connected to an output shaft of the second motor through a coupling, and is arranged in the cleaning tank, and cams are fixedly arranged on the rotating shaft III in the cleaning tank.

A power or manually operated winch mechanism for handling the running rigging lines of a sailing yacht. The winch includes a winding drum, operating in conjunction with a level wind mechanism, which winds and stores the line during line retrieving operations and controllably releases the line when desired. Novel level wind features enable the lines to be appropriately tensioned during retrieval, to assure proper windup of the line in organized coils on the drum. During line release, the line is placed under tension by the level wind mechanism and thus positively drawn from the unwinding winch drum even when the line is not under load from the sail to which it is attached. The arrangement enables lines to be automatically released from one winch and retrieved on a second which, under a common control, as when tacking or resetting the sails of a yacht, all without the necessity of any physical line handling by crew members, resulting in a significant improvement in the safety and convenience of the crew. The new winch mechanism preferably includes a novel alternate arrangement for manual operation of the system in the event of a failure of the power system.

A lift and pull assembly and method of removal of a dock or boat lift including a hitch receiver component configured to insert within a standard hitch receiver of a vehicle, a drawbar component configured to connect to the dock and having a lift foot mechanism that hinges upon the drawbar, a lift component having a lift arm extending from a mast where a cable from a winch extends from the lift arm to the lift foot mechanism such that operation of the winch moves the cable in order to apply a lifting force upon the dock or in order to simultaneously apply a lifting force and a pulling force upon the dock.

The invention discloses a yawl withdrawing method. The withdrawing method comprises the following steps that (1) a supporting device and a traction device are arranged on a hull of a mother ship, the supporting device comprises a bracket and at least two guide rails, and the traction device comprises a support and a winch; (2) the yawl sails from the water surface to the position in front of the at least two guide rails, the winch leads one rope out, and the rope is connected with the front end of the yawl; (3) a long rod is used to control the tail of the yawl to enable the yawl to be positioned in the bracket direction, and by rotating the winch and tightening the rope, the yawl is placed on the bracket through the at least two guide rails; and (4) the winch is locked, a blocking rod is inserted at the rear end of the bracket, and the yawl is fastened through another rope. A yawl withdrawing and releasing device comprises the supporting device and the traction device. The withdrawing and releasing device is simple and reasonable in structure, and an original deck space is not occupied; the withdrawing method has the characteristics that deck moving is not influenced, and safe operation performance is high; and the yawl withdrawing method and the yawl withdrawing and releasing device are especially suitable for ships with narrow decks, low ship rails and small tonnage.

A system for loading, unloading and carrying a boat, upright with motor, on a vehicle includes a raised carrying rack positioned at an incline above the vehicle and a loading arm extending rearwardly from the back of the vehicle and supported in cantilever fashion by cables. A winch, cable and pulley system pulls the boat out of the water, onto the loading arm, up onto rollers at the rear of the carrying rack, and to the forward end of the carrying rack where it is secured. The loading arm may be folded upright after the boat is loaded on the carrying rack.

The invention discloses a guide rail type ship shore power charging device. The device comprises guide rails and a vehicle capable of sliding back and forth on the two guide rails, a mechanical arm mechanism is mounted on the vehicle, and a charging structure is mounted at the front end of the mechanical arm mechanism. The charging structure comprises a plug, an infrared sensor, an ultrasonic sensor, a guide sleeve, a limiting sleeve and a positioning sleeve. The limiting sleeve is connected with the plug through a hose. The positioning sleeve and the limiting sleeve realize rotary clamping connection or separation through the matching effect of a motor and an air cylinder. An embedded hole for a cable for supplying power to the charging structure to penetrate through is embedded between the two guide rails, a cable winch for winding and unwinding the cable is installed at the end point of one end of each guide rail, and limiting pieces for preventing the vehicle from rushing out of the guide rails are installed at the end points of the two ends of each guide rail respectively. Automatic butt joint of the charging plug and the charging interface on the ship is achieved, the automation degree of port operation is improved, and damage to the charging plug and the charging interface of the ship due to violent fluctuation of the water surface during charging is prevented.

A vessel includes a hull with a turret, a cavity in the turret and a mooring buoy releasably attached in the cavity, the buoy including a buoyant body and carrying a number of risers, extending to a subsea hydrocarbon well and a number of anchor lines connected to the sea bed, wherein upon connection of the buoy to the cavity, the buoy is attached to a pulling member connected to a winch on the vessel for lifting of the buoy. Each anchor line and / or riser at its upper end is connected to a stopper member, the stopper member being attached to the pulling member, wherein during lifting, each anchor line and / or riser and the stopper member are movable relative to the buoyant body in a length direction of the anchor lines and / or risers, and wherein after connection of the buoyant body to the cavity, the stopper member is engaged with an abutment member on the buoyant body to support the anchor line and / or riser weight off the body.

The invention discloses an isometric pile driver with adjustable transmission ratio, and particularly relates to the device for driving a punching rod to reciprocate up and down to perform piling through a driving wheel by utilizing a limiting column and a top plate, a capstan also drives a roller with an adjusting mechanism to rotate, the transmission ratio is adjustable, and equidistant piling work of different distances is achieved; and the isometric pile driver effectively solves the problem that an existing pile driver does not have the function of automatically positioning continuous piling. The isometric pile driver comprises a sweep template, a driving motor, the capstan, a piling mechanism, the roller and driving wheels, wherein the drive motor for wire jointing a power supply anda switch is arranged on the sweep template, the capstan is rotationally arranged above the sweep template, the piling mechanism is connected with the capstan, the roller of the capstan is connected through a second transmission piece, and the driving wheels of the roller are connected in an intermittent transmission manner; the piling mechanism comprises the limiting column, a guide groove, the punching rod and a sleeve, the limiting column is fixed to the outer edge of the side face of the capstan, the guide groove embedded with the limiting column is arranged in the top plate, the punchingrod is fixed below the top plate, and the sleeve is combined with the punching rod in a sleeving manner and is fixed on the sweep template. According to the isometric pile driver, and the adjusting mechanism is arranged in the roller.

A cooling system (100) for cooling a cable (10). The system (100) comprises: —at least one fixed cooling channel (20), which is arranged downstream of an extrusion head (EH); and —at least one multi-pass apparatus (30), which in turn comprises a set of fixed pulleys (32, 33, 34), and a fixed, motor-driven capstan (35) designed to wind the cable (10). The system (100) is characterized in that the multi-pass apparatus (30) comprises a movable pulley (36) designed to translate along vertical guides (39A, 39B). The movable pulley (36) and the vertical guides (39A, 39B) are contained in a cooling device (56) for cooling the cable (10).

The invention relates to a steam catapult which is important equipment for the taking off of the carrier aircraft of naval air force from the deck of the carrier. The one-way steam catapult with linear opening cylinder does not adopt the prior U-type-filling sealing technology, but a linear sealing technology with the combination of a composite steel rope and a counter cylinder to dynamically seal an opening steam main cylinder, which removes the defects of short sealing life and large maintenance of the U-type-filling sealing technology. Also, the steam catapult adopts back tracking motor-driven drag technology to realize the one way steam action of the catapult, thereby resolving the detects of large steam consumption of the U-type-filling sealing catapult and saving the valuable fresh water.

A load lowering descent controller having a fixed cylindrical body or capstan about which a rope or cable is turned. The descent controller allows for lowering of the load at a controlled rate by adjusting the amount of friction between the controller and the rope or cable as a function of rope or cable turning and relative contact with rope or cable engagement surfaces in the controller. The fixed cylindrical body or capstan is surrounded by a vented sleeve to prevent the rope from becoming heated and to prevent the user from being injured.