Abstract:
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.
Abstract:
An elevator includes a set of hoisting ropes supporting a counterweight and an elevator car moving on respective tracks, each hoisting rope having a substantially round cross-section, and a hoisting machine engaging the set of hoisting ropes via a traction sheave. The traction sheave has a plurality of rope grooves. Each of the plurality of rope grooves generally conforms to a substantially circular shape. Each of the plurality of rope grooves has an opening for receiving a hoisting rope from among the set of hoisting ropes. A coating is adhesively bonded to each of the plurality of rope grooves. Each hoisting rope has a diameter below 8 mm. Each hoisting rope is composed of steel wires having a strength exceeding 2000 N/mm2. A contact angle between the set of hoisting ropes and the traction sheave is greater than about 180 degrees.
Abstract:
The invention relates to an elevator provided with a safety gear arrangement, the elevator including at least an elevator car arranged to travel back and forth substantially vertically along guide rails, at least two safety gear mechanisms disposed in conjunction with the elevator car and at least one speed limiter, which includes at least a speed limiter pulley, a diverting pulley and a speed limiter rope fitted as a loop around at least the speed limiter pulley and the diverting pulley, the speed limiter rope being connected at least to a first safety gear mechanism. A second safety gear mechanism has been arranged to be triggered after the triggering of the first safety gear mechanism.
Abstract:
A method for installing, securing, or installing and securing at least one rope pulley of an elevator may include: arranging a set of ropes of the elevator and the at least one rope pulley, in a rigged or unrigged state, near an elevator car of the elevator or in a shaft of the elevator; and detachably mounting the at least one rope pulley to the elevator car, a frame structure of the elevator car, or a guide rail of the elevator car using a quick coupling. The elevator may include the ropes, the at least one rope pulley, the elevator car, and elevator car guide rails. The ropes may pass around the at least one rope pulley. The at least one rope pulley may be adapted to detachably mount to the elevator car, the frame structure, or one of the elevator car guide rails using a quick coupling.
Abstract:
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.
Abstract:
People mover such as a travelator or the like, includes a plurality of pallets for carrying and moving people. The pallets are arranged one after the other and form an endless track. The track includes an upper track section and a lower track section, and the people mover includes an area of direction change of the pallets where a respective one of the pallets moves between the upper track section and the lower track section. A motor produces the driving force needed to move the pallets. A flywheel is arranged to even out with its rotational energy movement in the travel direction of the pallet track.
Abstract:
The object of the invention is a traction sheave elevator and a rope (3) that contains metal as a load-bearing material, such as the suspension rope of an elevator, which rope comprises at least one or more strands (7) laid from metal wires (9) and which rope (3) is lubricated with a lubricant (8). Another object is the use of the aforementioned lubricant for lubricating the rope (3). The lubricant (8) comprises at least oil and thickener, which thickener in the lubricant (8) comprises at least 10% or more of the mass of the lubricant (8).
Abstract:
An elevator having an elevator car with a car frame on which are mounted a first set of diverting pulleys from which the hoisting ropes go downwards and a second set of diverting pulleys from which the hoisting ropes go upwards. The rope tension in the rope portions going from the diverting pulleys of the first set is smaller than the rope tension in the rope portions going from the diverting pulleys of the second set by a specified ratio. According to the invention, the diverting pulleys of the first set are at a larger average distance from the car frame than the diverting pulleys of the second set. In a possible inventive arrangement, the distance of an up-direction diverting pulley from the car frame is smaller by a specified ratio than the distance a corresponding down-direction diverting pulley.
Abstract:
Travelator, the conveyor of which comprises a frame, which comprises a stationary first frame part and a second frame part that moves in relation to it. The drive wheel is mounted on a bearing allowing rotation onto the first frame part. The power unit rotates the drive wheel. The diverting wheel is mounted on a bearing allowing free rotation onto the second frame part. The transport surfaces are connected to a traction element which is formed as an endless loop, and which is led to pass over the drive wheel and the diverting wheel. The tightening device is arranged to act between the first frame part and the second frame part to move the diverting wheel linearly away from the drive wheel in order to exert tightening force on the traction element. The travelator comprises identification means for identifying the drive status of the conveyor, and adjustment means for adjusting the tightening force of the tightening device to different force levels based on the drive status identified. In the method the drive status of the conveyor is identified, and the tightening force of the endless traction element of the conveyor of the travelator is adjusted on the basis of the drive status identified.
Abstract:
A travelator system for conveying a passenger, comprising a main conveyor and a branch conveyor. The main conveyor includes a first plurality of shafts each having a first plurality of belt pulleys disposed side by side thereon. The main conveyor also includes a plurality of mutually parallel endless belt loops which define a moving conveying surface of the main conveyor, each belt loop being passed over a belt pulley on two different shafts. Adjacent belt loops on the same common shaft are passed over different belt pulleys such that a first belt loop is passed over a belt pulley on a previous shaft relative to the common shaft in a transport direction of the main conveyor, while a second belt loop is passed over a belt pulley on a following shaft relative to the common shaft in a transport direction of the main conveyor. The branch conveyor branches off of the main conveyor in a connecting section to allow passengers to enter from the branch conveyor onto the main conveyor and/or to exit from the main conveyor onto the branch conveyor. The branch conveyor is also implemented using shafts, belt pulleys, and belt loops similar to the main conveyor. In the connecting section, the branch conveyor and the main conveyor share at least one common shaft.