Pulley-driven elevator
AssigneeBlain Hydraulics GmbH
InventorRegina Köster
Life of this patent
Estimating the term…
Abstract
A traction-sheave elevator is provided without a counterweight. The elevator includes an elevator car that is guided in an elevator shaft. A rope is used to carry the car. The elevator further include at least two motor-driven traction-sheaves that are connected one behind the other relative to the rope. The rope wraps around each traction-sheave to define a relative angle of wrap greater than 180°. A tensioning device is connected downstream of the traction-sheaves for self-adjustably applying a requisite tension to the rope after the rope comes off the second traction-sheave. Additionally, a braking device is provided for at least one of the traction-sheaves.
Claims8
A traction-sheave elevator without counterweight, which is guided in an elevator shaft (1), comprising a load-conveying means (12) for carrying a load in the elevator shaft, a flexible carrying means (15) for carrying the load-conveying means, at least first and second motor-driven traction sheaves (8, 9) connected one behind the other relative to the carrying means such that the carrying means (15) defines a relative angle of wrap around each traction sheave (8, 9) of greater than 180°, and a tensioning device (17) connected downstream of the two traction sheaves for self-adjustably applying a requisite tension to the carrying means (15) after the carrying means comes off the second traction sheave (9) and a braking device provided for at least one of the traction sheaves (8, 9).
Dependencies are inferred from the claim text.