摘要:
An elevator, preferably an elevator without counterweight, comprising a number of diverting pulleys in the upper part of an elevator shaft or equivalent, a number of diverting pulleys in the lower part of the elevator shaft and a number of diverting pulleys on an elevator car, is installed in such manner that at least some of the diverting pulleys for the upper part are rigged in the lower part of the elevator shaft and at least some of the diverting pulleys from which the passage of the ropes is directed upwards are rigged at the same time. The diverting pulleys for the upper part thus rigged are raised in the rigged state to the upper part of the elevator shaft or equivalent and mounted in place.
摘要:
An elevator may include an elevator car, a set of hoisting ropes, a traction sheave, and a compensating device. The set of hoisting ropes may include first and second rope portions. The elevator car may include one or more first diverting pulleys from which the first rope portions extend upward. The elevator car may include one or more second diverting pulleys from which the second rope portions extend downward. The first rope portions may be under a first rope tension. The second rope portions may be under a second rope tension that is different from the first rope tension. The compensating device may act in substantially opposite directions on the first and second rope portions. The compensating device may produce an auxiliary force acting substantially in a same direction as the first rope tension.
摘要:
An elevator may include an elevator car, two or more diverting pulleys on the elevator car, one or more hoisting ropes, a traction sheave, and a compensating device. The hoisting ropes may include first, second, third, and fourth rope portions. The first rope portions may extend upward from at least one diverting pulley and the second rope portions may extend downward from at least one diverting pulley. The first rope portions may be under a first tension caused by the compensating device acting on the third rope portion and the second rope portions may be under a second tension caused by the compensating device acting on the fourth rope portion. The first tension to the second rope tension may be maintained substantially constant and may be independent of a load of the elevator.
摘要:
An arrangement in drive machinery of a travelator, moving walkway, escalator or similar apparatus, includes at least a drive motor, at least one handrail with a handrail belt, a support element supporting the handrail and a drive belt connecting rotational movement of the drive motor to the support element. The support element comprises a supporting wheel, having a rim and adapted for use by the drive belt which is fitted to the rim of the support element.
摘要:
An elevator may include an elevator car, hoisting ropes, traction sheave, and compensating device. The hoisting ropes may support the elevator car. The traction sheave may move the elevator car using the hoisting ropes. The elevator may include rope portions of the hoisting ropes going upwards and downwards from the elevator car. A rope portion going from the traction sheave in a direction of the rope portions going upwards from the elevator car may be under a first rope tension. A rope portion going from the traction sheave in a direction of the rope portions going downwards from the elevator car may be under a second rope tension. The compensating device may do one or more of the following: equalize rope tension, compensate the rope tension, equalize rope elongation, compensate the rope elongation, and render a ratio of the first rope tension to the second rope tension substantially constant.
摘要:
An elevator is provided comprising a number of diverting pulleys in the upper part of an elevator shaft or equivalent, a number of diverting pulleys in the lower part of the elevator shaft and a number of diverting pulleys on the elevator car. In various embodiments, at least some of the diverting pulleys are pre-rigged and brought into the elevator shaft together with the car, and the hoisting ropes are stretched to their proper length when the diverting pulleys in the upper and lower parts of the shaft are mounted in place. In various embodiments, the elevator may be an elevator without counterweight.
摘要:
The present invention relates to an arrangement in an elevator without counterweight, which comprises at least a control unit (5), a hoisting machine (3) and a traction sheave (4) connected to it, and an elevator car (1) suspended on hoisting ropes (2) fixed to an essentially immovable place at their first ends and adjustably at their second ends, which elevator car (1) is fitted to travel backwards and forwards in an essentially vertical direction, and which elevator also comprises a tightening element (15) acting on the second end of the hoisting ropes (2). An actively operating actuator (17, 21, 24, 29) is in connection with the tightening element (15), which is fitted by means of feedback to keep the rope tension essentially at a predetermined level either by lightening or tightening the rope tension according to changes in the loading.
摘要:
A pallet arrangement for a people mover includes a pallet adapted to move on wheels and form part of a moving track. The pallet includes a pallet body having at least two profile sections joined together. A wear surface is coupled to the pallet body and the two profile sections have a form-lock coupling.
摘要:
In the elevator of the invention, the hoisting rope is roped to meet the traction sheave in two different rope grooves, which have differ from each other in respect of their holding properties. In the traction sheave of the invention, at least two adjacent rope grooves have cross-sectional shapes differing from each other.
摘要:
A conveyor for use in a travelator for transporting passengers in a transport direction. The conveyor comprises a frame; a plurality of shafts mounted on the frame substantially transversely to the transport direction, each of the plurality of shafts being substantially parallel to one another and spaced apart from one another. A belt pulley pack is mounted on each of the shafts, each belt pulley pack comprising a plurality of belt pulleys mounted adjacent to one another. Each belt pulley comprises a mold-cast object comprising: a first side having a first aligning and coupling element formed therein; a second side opposite to the first side, the second side having a second aligning and coupling element fitted to match the first aligning and coupling element, so that the first and second aligning and coupling elements of adjacent belt pulleys align and couple the adjacent belt pulleys together in a shape-locking manner. A moving transport surface comprises a plurality of mutually parallel endless belt loops, each of the belt loops passing over two belt pulleys located on different shafts.