Abstract: A direct drive drawworks having a first electric motor comprising a first output shaft, a second electric motor comprising a second output shaft, and a drum for storing a flexible line. The drum may be disposed between the first electric motor and the second electric motor. The first output shaft and the second output shaft may each be connected to the drum. The first electric motor and the second electric motor may be collectively operable to rotate the drum. The first output shaft and the second output shaft may be connected to the drum such that the drum rotates at the same speed as the first output shaft and the second output shaft.

Abstract: An easily changeable assembly type power winch includes a power source, a deceleration device, an outer casing, a rope wheel, a first support frame and a second support frame. After the power winch and two cross plates are assembled to form a basic assembly, a rope outlet board and an electric control box are assembled with the basic assembly to form the power winch in a horizontal assembly mode or an upright assembly mode, and these two assembly modes can be switched quickly to achieve the effects of reducing the manufacturing cost, improving the convenience of assembling, and broadening the scope of application.

Abstract: A spare tire winch mechanism which performs the steps of lowering the spare tire from its location and locating the flat tire on this location via a rope winding assembly. A worm gear and a threaded drum prevent the rope from winding onto the threaded drum in an overlapping and irregular manner which results in locking of the parts and the damage to the parts due to the application of extreme force during the winding. The spare tire performs free fall movement with its own weight as a result of the tire wrench being activated with a pulling force applied perpendicular to the floor axis and the worm gear disconnects from the drum body, in case one of the tires of the motor vehicle needs to be changed.

Abstract: A winch capable of externally connecting motor is to selectively assemble and increase an externally connected motor (a third motor) on a winch driven by a set of motors so that a driving device disposed inside a driving device box of the winch is driven by dynamic power supplied from three motor at the same time to provide greater pulling force and faster pulling rate for a rope wheel of the winch, thereby providing wider scope of application. Moreover, the externally connected motor (the third motor) can be disassembled when there is no need such that dynamic power is provided by two motors so as to save power and energy resource.

Abstract: The present invention is an apparatus, system and method for use of an offshore hose loading station comprising multiple modular reel assemblies that may be selectively configured to a frame attached to a ship and or vessel wherein the reel assemblies may be powered by one motor and engaged for rotation by one shaft and provides a jumper shaft for when a module is taken out of line.

Abstract: Disclosed is an actuation system for adjusting the rigidity of elastic elements by using two sets of transmission modules together with a link gear and two sets of nonlinear elastic elements. The actuation system actuates an external arm by controlling the two sets of transmission modules to rotate in different directions and adjusts the rigidity of the elastic elements by controlling the two sets of transmission modules to rotate in the same direction, so as to achieve the effects of reducing the number of actuation modules used, minimizing the volume of the actuation system, and reducing production cost.

Abstract: Embodiments provide a tilt mechanism for tilting an electronic display that includes at least two nested torsion springs to offset and/or balance the torque generated by a display acting on the tilt mechanism. In some cases a tilt mechanism includes first and second brackets pivotally coupled about a tilt axis. First and second springs are wound about a tilt axis such that the first spring is located at least partially within the second spring. The springs engage with the brackets to exert first and second torques between the first and the second brackets. In some cases such tilt mechanisms can be carried by stands, arms, carts, and the like. Methods of tilting electronic displays are also provided.

Abstract: This publication discloses a method and a winch system for powering a winch handling loads at an end of a line associated with a winch drum, the winch being powered by means of one or more electric motors and one or more hydraulic motors via a gear, in that said one or more hydraulic motors are operated when the load in the line exceeds a predetermined load level for taking care of quick hauling in or paying out the line to compensate for vertical motion of the winch, for example vessel due to waves, and the output shaft(s) of said one or more hydraulic motors are connected to the drum shaft through combination of a sun wheel, planet wheels and parallel wheels. Both a system and use of the invention are disclosed.

Abstract: An assembly includes a motor; a second motor; a planetary transmission coupled to the motor and the second motor, and a spool coupled to the transmission. The spool has an interior volume for receiving the motor, the second motor and the transmission, and the motor and the second motor are disposed or disposable entirely within the spool. The motor and the second motor are capable of being operated such that one of the motors is speed controlled, and the other motor is torque controlled.

Abstract: This assembly includes a security apparatus equipping a lifting device, in particular a winch, and a system for actuating the apparatus The security apparatus includes a toothed wheel, wedged on the shaft of the lifting device, and a worm meshing with the toothed wheel. The assembly also includes: a splined shaft secured to one end of the worm; a pocketed wheel with inner and outer splines, engaged on the splined shaft; an elastic member between the pocketed wheel and a stop piece; a drive wheel with a splined hub, with which the pocketed wheel is capable of engaging rotationally; and a back-up motor, capable of rotating the drive wheel.

Abstract: A control system is provided for one or more chain drives. The control system includes a automation control system or control device in communication with a control board installed on one or more chain drives. The control board can include a microprocessor and a memory device. The memory device stores one or more computer programs or algorithms executable by the microprocessor to generate a plurality of commands to control the operation of a component, e.g., a motor, of the chain drive in response to receiving an operational command from the automation control system or control device.

Abstract: An example drawworks may include an electrical drive motor and an output shaft driven by the electrical drive motor. A worm gear may be coupled to the output shaft and a bull gear may be engaged with the worm gear. A wireline drum may be coupled to the bull gear and receive rotation from the electrical drive motor through the bull gear. The electrical drive motor, worm gear, and bull gear may comprise a drive unit that is removably coupled to the wireline drum. The wireline drum may form a drum unit with at least one spigot coupled to the drum, which may be removable coupled to the drive unit.

Abstract: A draw-works (10) is for maneuvering drilling devices that includes a winder (11) for winding at least one rope (12), which is centered on a shaft (13) having one first end and one second end and rotating in one first direction and in one second direction opposite to the first. The winder (11) is at least partially substantially cylindrical in shape. One or more supports (14) rotatably support the shaft (13). Motors (19) are designed to enable rotation in the first direction and in the second direction of the shaft (13) and of the winder (11). The supports (14) and the motors (19) are fixed to a frame base (16). The motors (19) are set on both sides of the winder (11) and connect to them without speed-reducing elements, with direct drive on the shaft (13).

Abstract: A bracket of a rotation device of the present invention has a guide mechanism that is configured to guide a first motor and a second motor so as to rotate the same about an axis of a cylindrical rotating body relative to each other. A first gear and a second gear can respectively be meshed with rotating body side gears corresponding thereto while the first motor or the second motor is deviated around the axis of the cylindrical rotating body from a normal attachment position with respect to the bracket. Further, the first motor or the second motor can be guided to the normal attachment position by the guide mechanism in the condition.

Abstract: An apparatus (10) for remotely running a subsea production tree (12) and desuspending a well is described. The apparatus comprises a tree running tool (16) adapted to be connected to a production tree, at least one downhole tool, at least one of the tools being a plug retrieval tool (22) and a tool deployment device (18) in hydraulic communication with at least the plug retrieval tool to hydraulically operate the plug retrieval tool.

Abstract: An assembly is provided that can include a motor; a planetary transmission coupled to the motor; and a spool coupled to the transmission, and the motor is disposed or disposable partially within the spool.

Abstract: This invention relates to a portable winch assembly (10; 210) comprising a footplate (12; 212), a support frame (14; 214) which is locatable upon the footplate, a magazine (16; 216) which is locatable upon the support frame, and a drive mechanism (22; 222) which is connectable to the magazine to drive the magazine to rotate. The foot plate, support frame, magazine and drive mechanism comprise separable components which may be transported separately to a site of use and assembled into the winch at the site of use. The invention can provide a portable winch assembly capable of generating a tensile force of up to 10 tonnes, and is therefore suitable for pipe pulling and pipe bursting applications for example, and yet is made up of parts which can readily be carried to the site of use, which site of use may be inaccessible for vehicles.

Abstract: A draw-works (10) is for maneuvering drilling devices that includes a winder (11) for winding at least one rope (12), which is centered on a shaft (13) having one first end and one second end and rotating in one first direction and in one second direction opposite to the first. The winder (11) is at least partially substantially cylindrical in shape. One or more supports (14) rotatably support the shaft (13). Motors (19) are designed to enable rotation in the first direction and in the second direction of the shaft (13) and of the winder (11). The supports (14) and the motors (19) are fixed to a frame base (16). The motors (19) are set on both sides of the winder (11) and connect to them without speed-reducing elements, with direct drive on the shaft (13).

Abstract: A winch may include a drum, a winch motor adapted to rotatably drive the drum in a first direction and a second direction, a cable adapted to be wound off of and onto the drum, and a fan including an impeller selectively driven by a fan motor. The fan is adapted to cool the winch motor.

Abstract: A drive unit has at least one motor, a motor stand, a bearing block, a drive pulley and a counter-roller attachment. The drive pulley is mounted at the motor stand and at the bearing block by a shaft. A respective brake is arranged at the bearing block at each side. Webs connect the motor stand with the bearing block. The motor stand, the bearing block and the webs form a stable structure without an engine frame carrying the motor stand and the bearing block being necessary. A counter-roller attachment consisting of side plates and a counter-roller is arranged directly at the motor stand and the bearing block.

Abstract: The invention provides a hoist drive system for controlling the position of a hoist platform in a palletizer. In an embodiment of the invention, a hoist drive system comprises two electrical motors with dual output shafts. One motor may have an encoder for taking measurements relating to the rotation of the motor. A common shaft with a spring set safety brake ties the motors together. The two motors may be flux vector motors controlled with input from the encoder. The motors drive two gearboxes, thereby enabling vertical displacement of a hoist platform coupled to the drive system.

Abstract: The invention provides a hoist drive system for controlling the position of a hoist platform in a palletizer. In an embodiment of the invention, a hoist drive system comprises two electrical motors with dual output shafts. One motor has an encoder and as one motor rotates clockwise, the other motor rotates counter clockwise. A common shaft with a spring set safety break ties the motors together. The two motors are tied together electronically with a flux vector motor controller with input from the encoder. The flux vector motor controller controls the operation of the two motors, which drive two gearboxes, thereby enabling vertical displacement of a hoist platform coupled to the drive system.

Abstract: An auxiliary safety lift device for an elevator includes a main elevator power system, a spare electric power system, a secondary motor, a secondary speed reducer, and an electromagnetic clutch. The electromagnetic clutch includes an electromagnetic disk, a transmission disk for rotating the main shaft of the main motor of the main elevator power system, a drive disk rotated by the secondary speed reducer, and a spring sheet secured on the drive disk. When the electromagnetic disk is energized by the spare electric system, the spring sheet is attracted by the electromagnetic disk to engage the transmission disk so that the transmission disk is rotated with the drive disk to rotate the main shaft of the main motor.

Abstract: A fully redundant drawworks is provided with two complete and totally independent systems for controlling and powering the drum and drum shaft of the drawworks. Each system broadly comprises at least one source of power (e.g., a motor or engine), a power transmission means, preferably of the gear or chain type, and some means of mechanically coupling the power source, transmission and drum shaft together. Each system may also be provided with a brake means, such as one or more disc, band, electric or water-cooled brakes. In the event that any component of either system fails, the fully redundant drawworks will still have the ability to raise drill pipe from a bore hole and thus avoid the risk of a “stuck” drill pipe.

Abstract: A pulling head adapted for use with a crystal growing furnace and a crystal growing furnace containing such pulling head, which furnace comprises a high and low speed seed lift motor, a seed rotation motor, a rotatable platform about the upper portion of the furnace, a winch mounted on the platform and adapted for rotation about its own axis to maintain a cable on a central vertical axis, a cable about the winch, one end of the cable adapted to hold a seed crystal within a sealed vacuum or inert atmosphere of the furnace and a multiple-stage planetary gear differential mechanism to receive the output motions of both seed lift motors and the seed rotation motor and to provide a first seed rotation motion output to rotate the platform and a second output to rotate the winch, the second output being the weighted sum of the input motion of the speed ranges of the seed lift motors to provide a seed lift motion which is independent of the speed rotation motor, thereby providing a pulling head which combines the inp

Abstract: A hoist having a worm safety device in which the worm is continuously meshed with a worm wheel coupled to the drum. The worm is accelerated to a speed greater than that of the worm wheel and at a torque sufficient to overcome the frictional contact between the worm and worm wheel when the hoist direction is reversed.

Abstract: A two-speed, pilot-operated selector valve which directs hydraulic fluid to two motor elements with a common output shaft to obtain a high-torque, low-speed mode, or to one motor element, while recirculating the second element in a loop, to obtain a low-torque, high-speed mode. The spool has a built-in logic mechanism which, while shifting from one position to the other, prevents any momentary condition where a motor discharge port is blocked or a fluid path exists that bypasses both motor elements.

Abstract: A heave motion compensation appartus is used to move a load from a supply ship in heavy seas to a platform on an oil rig. A main load line extending down from a point of a crane boom mounted on the oil rig is driven by a pair of hydraulic main hoist drum motors. One of the motors is a variable displacement swash-plate type motor. The motors are driven through a hydrostatic transmission by a pair of variable displacement hydraulic pumps. A signal line running over the boom point is attached to the supply vessel and maintained taut. Sensor and control means reading movement of the signal line with respect to the first platform is used to control the displacement of one of the main hoist pumps to cause an outer end of the main hoist line to move up and down with the supply vessel. The other pump is controlled to raise and lower the outer end of the main load line. The main load line is attached to the load.

Abstract: The present invention is a hoisting winch that uses two motors, one a low-speed, high-torque hoisting motor and the other a high-speed, low-torque compensation motor. The motor shafts are connected to a cable drum by an epicycloidal gear trains. Uni-directional free-wheel assemblies are operatively connected to the motor shafts between the motors and an associated gear train. A first free wheel assembly includes a first driving element which is connected to the hoisting motor shaft and which drives a first driven element only in the drum unwinding direction. A second free wheel assembly includes a second driving element which is connected to the compensation motor shaft and which drives a second driven element driven only in the drum winding direction. Selectively appliable and releasable brakes resist rotation of the driven elements. An electrohydraulic control system controls the motors and brakes to allow the hoisting winch to be used in loading and unloading cargo from a ship.

Abstract: An improved automatic bottle filling apparatus is provided. The apparatus includes a spring loaded back pressure plate which avoids jamming of bottles that are carried by conveyor. A bottle detection system comprising a photoelectric device or microswitch assures positioning and detection of an individual bottle. Vibration is essentially dampened by guide plates. Overheating of the drive motors to operate the vertical movement is obviated by use of a pair of continuously operated motors and running in opposite directions connected to mechanical actuators and by means of clutch brake mechanisms.