Hydraulic Winches

1. A hydraulic winch as defined in claim 15 wherein said reduction drive includes a sun gear meshed with said planetary gears and said hydraulic motor is drivingly connected to said sun gear, said winch also including means for automatically locking said motor and said sun gear against rotation concurrently with a failure in the means for effecting the flow of hydraulic fluid to said motor and to said clutch whereby, in the event of a failure, the locking of said motor by said last-mentioned means and the braking of said ring gear by said clutch biasing means will keep said cable drum from rotating and dropping a load being lifted by said winch. 1. A hydraulic winch comprising: a rotatably mounted cable drum; a hydraulic motor for rotating said drum; means including a hydraulically operated, biased engaged clutch drive-connecting said motor to said cable drum; means for effecting a flow of operating fluid to said motor and to said clutch including first and second flow control valves for respectively controlling the flow of fluid to said motor and to said clutch; and an operator actuatable controller which is continuously displacable from a neutral position toward a first limit position for so controlling the operation of the second flow control valve of said flow effecting means that, as the controller is displaced from said neutral position toward said first limit position, the flow of fluid to said clutch is increased and an increasing, clutch disengaging, hydraulic force is exerted on said clutch, thereby allowing a load to be lowered at an operator selected rate independently of the speed or direction of rotation of said motor. The motor drives the drum through a planetary gearing which includes a ring gear normally held from rotation by a friction clutch band, spring biased into engaged position but releasable by the application of hydraulic pressure from a separate pump supplied through a second system that includes a second flow control valve. 15. A hydraulic winch as defined in claim 1 which also includes a housing; wherein said cable drum is a shaft supported cable drum rotatably mounted in said housing and the means drive connecting said motor to said cable drum includes a reduction drive for rotating said cable drum, said reduction drive comprising planetary gears, an internal ring gear meshed with said planetary gears, and a planetary gear carrier rotatable with said cable drum; said clutch being composed of a lining and a band with one stationary end and one free end surrounding said ring gear; and said winch also including means for biasing the free end of said clutch band toward the stationary end thereof to brake said ring gear and said cable drum and for displacing said free end away from said stationary end to free said ring gear and cable drum for rotation, said last-mentioned means comprising a hydraulic cylinder, a piston in said cylinder and connected to the free end of said clutch band, spring means in said cylinder for biasing said piston in a ring gear braking direction, and means via which hydraulic fluid can be introduced into said cylinder to displace said piston in the opposite direction against the bias of the spring means to free said internal gear and said cable drum for rotation. Up-to-date pricing and reviews for Hydraulic Winches on the market can be found at the winch adviser website.

1. A hydraulic winch comprising: a rotatably mounted cable drum; a hydraulic motor for rotating said drum; means including a hydraulically operated, biased engaged clutch drive-connecting said motor to said cable drum; means for effecting a flow of operating fluid to said motor and to said clutch; and an operator actuatable controller which is continuously displacable from a neutral position toward a first limit position for so controlling the operation of said flow effecting means that, as the controller is displaced from said neutral position toward said first limit position, an increasing, clutch disengaging, hydraulic force is exerted on said clutch, thereby allowing a load to be lowered at an operator selected rate independently of the speed or direction of rotation of said motor, said operator actuatable controller also being displacable from said neutral position toward a second limit position and said flow effecting means including a fluid bypass means so actuated by said controller that, as said controller is moved toward said second limit position, increasing amounts of operating fluid are diverted from said motor to thereby reduce the torque generated by the motor. 2. A hydraulic winch comprising: a rotatably mounted cable drum; a hydraulic motor for rotating said drum; means including a hydraulically operated, biased engaged clutch drive-connecting said motor to said cable drum; means for effecting a flow of operating fluid to said motor and to said clutch; a first operator actuatable controller which is continuously displacable from a neutral position toward a first limit position for so controlling the operation of said flow effecting means that, as the controller is displaced from said neutral position toward said first limit position, an increasing, clutch disengaging, hydraulic force is exerted on said clutch, thereby allowing a load to be lowered at an operator selected rate independently of the speed or direction of rotation of said motor, and a second operator actuatable means for so controlling said flow effecting means as to control the direction in which the fluid flows through, and thereby the direction of rotation of, said motor. 14. A hydraulic winch as defined in claim 12 wherein the means drive-connecting said motor to said cable drum includes a planetary gear reduction drive comprising an internal ring gear and wherein said clutch includes means operable with said clutch engaged to keep said internal ring gear from rotating.

Various features of winches include integrated negative lamellar brakes, optional hydraulic motor drives, rope guides, pressure rollers, displacement orbital piston motors, balancing valve units, internal draining & rope winding control systems, extensometric load cells, grooved drums, ropes, hooks & pulleys. Products include winches, circulating pumps, gear reducers, adapter modules, cable jetting machines, underground cable laying equipment and cable drum trailers. Counterbalance valve 104 is a fail-safe device, and it is connected across the hydraulic fluid supply and return circuit 119 between flow directing valve 102 and motor 30. If a line should rupture, pump 100 fail, or the pressure in system 92 otherwise drop, valve 104 will immediately close, putting a fluid lock on, or stalling, motor 30. This keeps the motor from rotating and, consequently, keeps cable drum 24 from rotating and dropping the load being hoisted as discussed above.

3, the systems employed to supply hydraulic operating fluid to winch motor 30, to control the direction of rotation and speed of that motor, and to supply hydraulic operating fluid to clutch 36 includes a motor fluid supply system 92, a fluid supply system 94 for clutch 36, and an operator manipulatable controller 96. Briefly, my novel winches, by which the foregoing and other important advantages are obtained, have a cable drum driven by a reversible, variable speed, hydraulic motor through a hydraulically operated, biased engaged clutch and a control which locks or stalls the motor if a failure occurs. 12. A hydraulic winch as defined in claim 1 which also includes means for locking said motor against rotation upon a failure in the means for effecting the flow of operating fluid to said clutch and said motor whereby, if a failure as aforesaid occurs, the clutch will automatically engage and the motor lock to keep said winch from dropping the load being handled by said winch.

1. A hydraulic winch as defined in claim 10 which includes a hydraulic fluid supply means, wherein the means for circulating operating fluid through said motor includes a pump, wherein the flow directing and on-off means includes a flow directing valve means, and wherein the winch also includes a relief valve in series with said supply means, said relief valve also being in parallel with said flow directing valve means whereby, with said pump operating and the aforesaid flow directing valve means closed, fluid discharged from said pump is returned through said relief valve to said hydraulic fluid supply means, said fluid thereby being immediately available to operate said motor upon the actuation of said flow directing means by said second operator actuatable means. 9. A hydraulic winch as defined in claim 1 in which said flow effecting means includes means automatically operable in the event of a failure therein to halt the flow of fluid through and thereby lock said motor against rotation, said last-mentioned means and said biased engaged clutch thereby combining to keep a load being raised by the winch from dropping in the event of such failure. 6. A hydraulic winch as defined in claim 5 in which said flow effecting means includes a second modulating valve for controlling the flow of fluid to said clutch and wherein said operator actuatable controller includes a second cam means for operating said second modulating valve.
2. A hydraulic winch as defined in claim 3 wherein the fluid bypass means of said flow effecting means includes a modulating valve for diverting fluid around said motor, wherein said flow effecting means includes a second valve means for directing fluid to said motor in directions effecting rotation of said motor in opposite directions as selected by the winch operator, wherein said operator actuatable controller includes cam means for operating said modulating valve, and wherein said second operator actuatable means comprises a three-position switch means. 4. A hydraulic winch as defined in claim 2 in which said operator actuatable controller is displacable from said neutral position toward a second limit position and wherein said flow effecting means includes a fluid bypass means so actuated by said controller that, as said controller is moved toward said second limit position, increasing amounts of operating fluid are diverted from said motor to thereby reduce the torque generated by the motor. The SBN 30-S is a single drum hydraulic powered winch driven by a single speed axial piston motor via a planetary reduction gearbox.

With a 17.9 cubic-inch motor that operates off your vehicle’s original power steering pump, a low gear for heavy pulling, and 100 feet of 3/8th-inch thick cable, this powerful winch will pull… With an efficient 36:1 two stage heavy duty steel geared oil lubricated planetary gearbox, high torque hydraulic brake motor with full load holding hydraulic release brake and load control valve. Electric winches are powered by (of course!) electricity and they include motors which turn the drum to spool the cable.

This form of power winch is mainly composed of hydraulic motor, drum, gear box and control valve. Specifically, as the control lever is shifted clockwise, the cam 126 on control shaft 120 depresses the actuator 144 of valve 140, providing fluid communication between hydraulic lines 146 and 148 and, consequently, supplying hydraulic fluid to the interior of clutch mechanism hydraulic cylinder 62 through port 86 and against piston 66. This compresses spring 74, releasing the pressure upon clutch lining 58 and band 60, thereby allowing cable drum 24 to rotate under the force exerted by the load being handled. The system 92 provided for supplying hydraulic operating fluid to motor 30 includes a hydraulic fluid supply tank 98, a circulating pump 100, a four-way valve 102 with an A-B center block, a counterbalance valve 104, a bypass valve 106 in a valve block 108 of controller 96, and relief valves 110 and 111.

1. A hydraulic winch comprising: a rotatably mounted cable drum; a hydraulic motor for rotating said drum; means for circulating operating fluid through said motor; a first, operator actuatable means for controlling the rate of circulation of said fluid through said motor and the consequent rate of rotation of the cable drum; a flow directing and on-off means in series with said fluid circulation rate controlling means for controlling the flow of fluid to said motor and the direction in which the fluid flows therethrough; and a second, operator actuatable means for controlling the operation of said flow directing means, said last-mentioned means having a position in which said flow directing means is operable to block the flow of operating fluid to said motor. A hydraulic truck winch has more pulling power than an electric version, which can quickly become bogged down under heavy loads. The RMC50 is a single drum hydraulic powered winch, driven by a single speed axial piston motor via planetory reduction gearbox.

A single drum hydraulic winch, the FRN70-S is driven by a single speed axial piston motor via planetary reduction gearbox, ring gear and pinion. The 300 Te winch is a single drum hydraulic powered winch driven by hydraulic motors via planetary gear and spur gear reduction. Other products include orbit piston motors, track & wheel drives, pulling winches, rotary tables & planetary reducers.

Engineering, Design & Manufacturer Of Cable Reels, Hose Reels, Winches, Hydraulic Presses & Balers, Hydraulic Cylinders, Manifolds, Mud Suction Valves, Hydraulic Power Units & Controls; Specialized Machinery, Manufacturing & Steel Fabrication. Features include liquid-cooled wet disc hydraulic clutch, sealed planetary gearing and hydraulic motor with directional controls. VM HSW 500/500E Pulling winch suitable for underground cable installations, hydraulically powered by means of a gasoline engine or electric motor.

A hydraulic winch is a pulling or lifting device with a wire rope wound around a rotating drum and a hydraulic winch motor powered by pressurized hydraulic fluid. System 94 includes a hydraulic fluid supply tank 134 (which may be combined with supply tank 98), a hydraulic fluid circulation pump 136, an accumulator 138 which keeps pressure in the system, and a spool type or other modulating valve 140 in the block 108 of controller 96. 2. This engages the clutch and stops the rotation of reduction drive ring gear 44. With motor 30 also halted, cable drum 24 is thereby kept from rotating, keeping the winch from dropping the load.

1 by a hydraulic motor 30 which is connected to the cable drum through a drive shaft 32, a planetary gear reduction drive 34, and a fail-safe type, hydraulically actuated clutch 36. Winch 20 includes a cable drum 24 rotatably supported, at its opposite ends, in a motor end housing 26 and a ring gear housing 28. Cable drum 24 can be reversibly rotated as indicated by arrow 29 in FIG. One valve so controls the hydraulic pressure on the winch clutch as to engage (or disengage) the clutch to a selected degree, making it possible to lower or drop a load at a selected rate with the winch motor locked. Be sure to visit winch adviser for the best Hydraulic Winches on the market to buy.

Generally speaking, the control units providing the advantages discussed above include two hydraulic fluid flow modulating valves actuated by a single control lever and a three-position, electrical switch mounted on the control lever. A pump supplies fluid to the motor through a system using an electrically controlled four-way, flow direction valve associated with a counterbalance valve and a manually adjustable flow control valve. Hydraulic winches on the other hand use fluid power to work which utilizes hydraulic systems and a motor pump between the generator set and the winch.