US 4,227,680 AGranted

Hydraulic winch

AssigneeB. C. Gearworks Ltd.

InventorStan Hrescak

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Abstract

A rapid reverse winch has a hollow winding drum and a hydraulic motor to a first side of the drum. A drive shaft extends inwardly from the motor and is connected to a primary sun gear near the center of the drum. A primary internal gear extends about the primary sun gear. There is a primary planet hub between the primary sun gear and the primary internal gear and a plurality of planet gears rotatably mounted on the primary planet hub are in mesh with the primary sun gear and the primary internal gear. A final drive sun gear to a second side of the drum is connected to the primary planet housing. A non-rotatable final drive housing extends about the final sun gear. There is a final drive planet hub between the final drive sun gear and the final drive housing with a plurality of planet gears in mesh with the final drive internal gear and the final drive sun gear. A sprag clutch between the drive shaft and the primary internal gear permits rotation between the drive shaft and the primary internal gear when the motor rotates the drum in a winding-in direction. The clutch non-rotatably interconnects the primary internal gear and the drive shaft when the drum is rotated in a reeling-out direction opposite to the winding-in direction.

Claims11

Dependent claims

A rapid reverse winch comprising:

a hollow winding drum rotatable about a longitudinal central axis;
a motor to a first side of the drum having a drive shaft coaxial with the central axis and extending towards a second side of the drum;
a primary sun gear connected to an inner end of the drive shaft;
a primary internal gear extending about the primary sun gear;
a primary planet hub between the primary sun gear and the primary internal gear;
a plurality of planet gears rotatably mounted on the primary planet hub in mesh with the primary sun gear and the primary internal gear;
a final drive sun gear to a second side of the drum and connected to the primary planet hub;
a non-rotatable drive housing with a final internal gear extending about the final sun gear;
a final drive planet hub between the final drive sun gear and the final drive housing and connected to the drum;
a plurality of planet gears rotatably mounted on the final drive planet hub in mesh with the final internal gear and the final sun gear;
and
free-wheel means between the drive shaft and the primary internal gear permitting rotation between the drive shaft and the primary internal gear when the motor rotates the drum in a winding-in direction and non-rotatably interconnecting the primary internal gear and the drive shaft when the drum is rotated in a reeling-out direction opposite to the winding-in direction.

9 more elements

Dependencies are inferred from the claim text.