OVERHEAD TRACK HOIST Russian patent published in 1997 - IPC

FIELD: material handling facilities. SUBSTANCE: overhead track hoist has support and load boom with hoisting mechanism hinge secured on support. Hoisting mechanism has two drums hinge-secured on common traction shaft, and wire ropes wound each on its drum. It has also locking device, change-over switch and differential friction mechanism Locking device is made in form of two-way ratchet mechanism consisting of two ratchet wheels with two pawls on one axle engaging with ratchet wheels on common traction shaft of drums, and also change-over switch. Switch has pawl change-over handle hinge secured on pawl axle for fixing engagement with each pawl, and spring inside handle. EFFECT: enlarged operating capabilities. 4 cl, 4 dwg