Speed/torque enhancing power transmission

摘要

A speed/torque enhancing power transmission is disclosed that translates slow rotating, high torque motion to high rotation, low torque motion or alternatively high rotating low torque motion to low rotating high torque motion and is suitable as a speed increaser for use in a device like a wind turbine. As a speed increaser the transmission has certain advantages, such as reduced weight and/or size compared to other units having the same performance characteristics. The speed increaser employs a pair of externally toothed spur gears orbiting in a non-rotating manner 180° out of phase inside an internally toothed ring gear. The input drives the ring gear and the orbiting spur gears drive separate eccentrics on the output shaft extending in opposite directions to provide dual output. In one embodiment, cross guide projections on the spur gear and cross guide projections on the housing engage slots in a swash plate.

主权项

1. A speed/torque enhancing power transmission comprising:
a) a housing structure; b) a ring gear member journalled on the housing structure for rotation about an axis and adapted for external connection thereto for power transmission; c) a shafting structure journalled on the housing for rotation about said axis, said shafting extending axially in opposite directions from the ring gear member along said axis and having a first eccentric surface thereon and a second eccentric surface diametrally opposed to and axially adjacent said first eccentric surface; d) a first spur gear member disposed for rotatably contacting said first eccentric surface, and disposed on said housing structure for non-rotatable orbital movement about said axis for orbitally engaging the ring gear; e) a second spur gear member disposed for rotatably contacting said second eccentric surface and disposed on said housing structure for non-rotatable orbital movement about said axis for orbitally engaging the ring gear; and, f) wherein upon power input to one of the ring gear and the shafting, the speed of the other is respectively increased and decreased; and, further comprising: g) a first plate member with a first set of surfaces disposed on opposite sides of said axis and contacting said first spur gear for sliding movement in a first direction normal to said axis of rotation, with a second set of surfaces on opposite sides of said axis contacting said first spur gear for sliding movement in a second direction normal to said axis of rotation and orthogonal to said first direction; and h) a second annular plate member with a first set of surfaces disposed on opposite sides of said axis and contacting said second spur gear for sliding movement in a first direction normal to said axis, with a second set of surfaces on opposite sides of said axis contacting said second spur gear for sliding movement in a second direction normal to said axis and orthogonal to said first direction.