Abstract:
A people mover, such as a travelator, moving ramp or escalator, comprises a conveyor. The conveyor comprises a frame having a first frame part secured to a fixed structure, and a second frame part mounted to be movable in relation to the first frame part in the longitudinal direction. The first and second frame parts are arranged one after the other. Transport platforms are secured to a first drive element and a second drive element. The drive elements are endless elements. A first tensioning device tensions the first drive element and a second tensioning device tensions the second drive element. Each tensioning device acts between the first frame part and the second frame part. The conveyor additionally comprises mechanical transmission elements between the first and second tensioning devices for keeping the stroke lengths of the first and the second tensioning movements equal.
Abstract:
A travelator, moving ramp or escalator comprises a power machine and a conveyor having a driven end driven by the power machine and a non-driven end. The conveyor comprises a first and second drive elements which are at a distance from each other and parallel to each other, each being formed as an endless loop. A number of transport platforms are arranged one after the other and secured to the first and second drive elements. At the driven end, the first drive element is passed over a first driving pulley which is rotated by the power machine, and at the non-driven end the first drive element is passed over a first diverting pulley. The second drive element is passed over a second driving pulley at the driven end which is rotated by the power machine, and over a second diverting pulley at the non-driven end. A first synchronizing device is placed at the driven end for mutual synchronization of the first and second driving pulleys. The conveyor additionally comprises a second synchronizing device arranged at the non-driven end for mutual synchronization of the first and second diverting pulleys.
Abstract:
An elevator and a method, said elevator being preferably an elevator without machine room, and wherein the elevator car is supported by a set of hoisting ropes comprising one rope or a number of parallel ropes. The elevator has a traction sheave which moves the elevator car by means of the hoisting ropes. The elevator has rope portions of hoisting ropes going upwards and downwards from the elevator car, and the rope portions going from the traction sheave in the direction of the rope portion above the elevator car are under a first rope tension (T1) and the rope portions going from the traction sheave in the direction of the rope portion below the elevator car are under a second rope tension (T2). In addition, the elevator has a compensating device acting on the hoisting ropes to equalize and/or compensate the rope tension and/or rope elongation and/or to render the ratio of the first and the second rope tensions (T1/T2) substantially constant. The motion of the elevator is prevented and/or stopped by increasing the ratio of the first rope tension (T1) to the second rope tension (T2).
Abstract:
The present invention relates to a method of changing the direction of motion of a pallet at an end of a transport conveyor while maintaining the pallet at a substantially constant attitude. The method comprises conveying pallets in a passenger transport direction and at a first level, conveying pallets in a return direction and at a second, different level, positively guiding a trailing end of a first pallet with respect to its direction of motion with a supporting element, and rotating the supporting element with a second pallet located immediately behind the first pallet with respect to the direction of motion, thereby moving the trailing end of the first pallet from one of the first level and the second level to the other of the first level and the second level and changing the direction of motion of the first pallet.
Abstract:
A method for installing the ropes of an elevator in an elevator system comprising the ropes, a diverting pulley and a frame structure for rotatably supporting the diverting pulley in place, the method including the steps of mounting the ropes on the diverting pulley and mounting the diverting pulley together with the ropes in the frame structure or, alternatively, passing the ropes via a guiding device of the frame structure and mounting the diverting pulley and a supporting element in the frame structure. Also, an elevator comprising at least one diverting pulley mounted in place by means of a frame structure and a set of ropes having a number of ropes, the passage of which has been arranged using at least one diverting pulley
Abstract:
The invention relates to an elevator and a method for adjusting the inter-car distance in an elevator which comprises two or more elevator cars coupled to each other so as to be movable together in an elevator shaft, and in which these elevator cars are at least partly suspended by means of a common set of hoisting ropes (2). The vertical inter-car distance between the elevator cars (6 and 7) is adjusted by moving at least one of the elevator cars (6 or 7) in relation to at least one other elevator car (6 or 7) by pulling the elevator car to be moved upwards and lowering the elevator car to be moved downwards by means of at least one adjusting rope (13).
Abstract:
In an elevator, preferably one without machine room, a hoisting machine engages a set of hoisting ropes via a traction sheave, said set of hoisting ropes having a load-bearing part twisted from steel wires of circular and/or non-circular cross-section, and in which elevator there is diverting pulleys of which some is made larger than traction sheave. The weight of the hoisting machine of the elevator is at most about ⅕ of the weight of the nominal load of the elevator.
Abstract:
Elevator rope arrangement in which the elevator car and counterweight, travelling along guide rails in an elevator shaft, are supported by suspension ropes, which are attached to the top part of the elevator car and passed via at least one diverting pulley to the counterweight. Separate hoisting ropes are attached to the lower part of the elevator car and passed to lower part of the counterweight via at least one diverting pulley. The hoisting rope is a substantially thin rope made of synthetic fiber and having a sheath made of plastic material.
Abstract:
Elevator rope arrangement in which the elevator car and counterweight, travelling along guide rails in an elevator shaft, are supported by suspension ropes, which are attached to the top part of the elevator car and passed via at least one diverting pulley to the counterweight. Separate hoisting ropes are attached to the lower part of the elevator car and passed to lower part of the counterweight via at least one diverting pulley. The hoisting rope is a substantially thin rope made of synthetic fiber and having a sheath of plastic material.
Abstract:
An elevator drive machine includes a drive machine frame structure, a rotating part rotatably supported by bearings on the frame structure and having a traction sheave, and an electromechanical apparatus for driving the rotating part. The bearings of the rotating part include a bearing that substantially only transmits radial forces between the rotating part and the frame and a bearing that transmits axial forces between the rotating part and the frame.