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: A method for installing an elevator may include stopping an elevator car or partially completed elevator car in the upper part of an elevator shaft; rigging first portions of hoisting ropes between the car and diverting pulleys in the upper part of the shaft so that the first portions pass via the diverting pulleys in the upper part of the shaft and first diverting pulleys on the car; moving the car to the lower part of the shaft, while supplying ropes from rope reels to the first portions between the car and the diverting pulleys in the upper part of the shaft; and rigging second portions of the hoisting ropes between the car and diverting pulleys in the lower part of the shaft so that the second portions pass via the diverting pulleys in the lower part of the shaft and second diverting pulleys on the car.

Abstract: An elevator may include an elevator car, one or more hoisting ropes, a traction sheave, an overspeed governor, at least one safety gear, a locking mechanism, and guide rails. The car may be suspended by the one or more hoisting ropes. The traction sheave may move the car using the one or more hoisting ropes. The at least one safety gear and locking mechanism may be fitted in conjunction with the car. The overspeed governor may be configured to activate and release, via a linkage, the at least one safety gear during operation of the elevator. The locking mechanism may be configured to activate and release, by operatively acting on the linkage, the at least one safety gear during installation, maintenance, or installation and maintenance of the elevator. When activated, the at least one safety gear may engage one of the guide rails to lock the car in place.

Abstract: A transport system includes a motor for moving the transport appliance and a power supply circuit of the motor. The power supply circuit is connected between the motor and a power source that is limited (Plim) in its dimensioning. An energy storage that is limited (Elim) in its capacity is fitted in connection with the power supply circuit of the motor. The control arrangement includes a determination of the charging status (EQ) of the energy storage; a determination of the movement reference of the transport appliance; and a control of the movement of the transport appliance as a response to the determined movement reference of the transport appliance. The movement reference of the transport appliance is determined on the basis of the amount of energy that can be discharged from the energy storage and/or on the basis of the amount of energy that can be charged into the energy storage as well as on the basis of the travel distance of the transport appliance.

Abstract: An elevator may include an elevator car, a counterweight, a set of hoisting ropes, and one or more rope pulleys. The car and counterweight may be suspended on the hoisting ropes. At least one rope pulley may include a solid surface including a plurality of rope grooves configured to receive at least one hoisting rope. Each rope groove may generally conform to a semi-circular shape and may include a groove bottom and sides. The at least one rope pulley may include a coating adhesively bonded to it. The coating may directly contact the at least one hoisting rope. A coating thickness may be less than or equal to about 3 mm. At the groove bottom of each rope groove, the coating thickness may be substantially less than half a thickness of the at least one hoisting rope. The coating may cover the groove bottom and sides of each rope groove.

Abstract: An arrangement for equalizing rope force of an elevator may include: a hoisting machine, set of hoisting ropes, traction sheave, elevator car, guide rails, and compensating device. The hoisting machine may engage the hoisting ropes via the traction sheave. The elevator car may be at least partially supported by the hoisting ropes to move the elevator car. The elevator car may move along the guide rails. The compensating device may include first and second tensioning devices. The first tensioning device may be spaced apart from the second tensioning device. The first and second tensioning devices may be interconnected via a transmission device that transmits rotary motion. A first end of the set of hoisting ropes may be secured to a point in conjunction with the first tensioning device. A second end of the set of hoisting ropes may be secured to a point in conjunction with the second tensioning device.

Abstract: An elevator may include an elevator car, counterweight, set of hoisting ropes, and one or more rope pulleys. The elevator car and counterweight may be suspended on the set of hoisting ropes. The one or more rope pulleys may be provided with one or more rope grooves. Each rope groove may have a groove bottom and groove sides. At least one rope pulley may have a coating adhesively bonded to it. At the groove bottom, a thickness of the coating may be at most about 3 mm. At the groove bottom, the thickness of the coating may be substantially less than half a thickness of the at least one hoisting rope running in the one or more rope grooves. At the groove sides, the thickness of the coating may be at most about 3 mm. The coating may be thicker at the groove bottom than at the groove sides.

Abstract: A handrail drive apparatus is provided comprising a first drive wheel assembly configured to drive a handrail and comprising a planetary gear train arranged to be driven by a first driving member. The handrail drive apparatus further comprises a second drive wheel assembly configured to drive the handrail, the second drive wheel assembly being coupled to the planetary gear train of the first handrail drive wheel assembly by a second driving member. The planetary gear train of the first handrail drive wheel assembly is configured to divide a torque imparted by the first driving member between the first and second drive wheel assemblies.

Abstract: A set of elevators includes a plurality of elevators without counterweight, a power supply, and a common control system. The plurality of elevators has a common connection to the power supply. The common control system includes one or more instructions to prevent or delay dispatch of an elevator car stopped at a floor if, at that instant, within a set period of time, or at that instant and within the set period of time, power consumed from an associated electrical network by the set of elevators or fed into the associated electrical network by the set of elevators together exceeds a set value. A method for controlling a set of elevators includes determining whether power consumed together exceeds a set value, and when the power consumed exceeds the set value, then departure of a next elevator car to be dispatched is prevented or delayed.

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: 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.

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.

Abstract: An elevator may include an elevator car, a plurality of diverting pulleys on the elevator car, one or more hoisting ropes, a traction sheave, and a compensating system. The elevator car may be suspended by the plurality of diverting pulleys on the one or more hoisting ropes. The one or more hoisting ropes may have rope portions going upwards from a first set of the diverting pulleys and downwards from a second set. The rope portions going upwards may be under a first rope tension. The rope portions going downwards may be under a second rope tension. The compensating system may act on the one or more hoisting ropes to perform one or more of equalizing tension, compensating tension, equalizing elongation, and compensating elongation in the one or more hoisting ropes, and keeping a ratio of the first rope tension to the second rope tension substantially constant.

Abstract: 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.

Abstract: 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.

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: Elevator, preferably an elevator without machine room. In the elevator, a hoisting machine engages a set of hoisting ropes by means of a traction sheave. The set of hoisting ropes comprises hoisting ropes of substantially circular cross-section. The hoisting ropes support a counterweight and an elevator car moving on their respective tracks. The hoisting rope has a thickness below 8 mm and/or the diameter of the traction sheave is smaller than 320 mm. The contact angle between the hoisting rope or hoisting ropes and the traction sheave is larger than 180°.

Abstract: The conveyor of a travelator comprises a number of shafts and a number of mutually parallel endless belts. The conveyor comprises a number of conveyor modules successively connected to each other with a connecting section between them. The belts in the connecting section are arranged to be loosenable so that at least one shaft over which the belts to be loosened are passed is detachable so as to allow the conveyor modules to be released from each other. To release a conveyor module, at least one shaft on which the belt loops in the connecting section turn over is moved in relation to another shaft to slacken the belt loops. The shaft over which the loosened belt loops are passed is detached and removed from the belt loops. The detached conveyor module is removed for maintenance and/or replaced.

Abstract: 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.

Abstract: An elevator may include a hoisting machine, a set of hoisting ropes, a traction sheave, an elevator car, elevator car guide rails, and a brake. The hoisting machine may engage the set of hoisting ropes via the traction sheave in order to move the elevator car along the elevator car guide rails. The brake may be configured to affect rotational movement of the traction sheave. The brake may include a brake shoe and a braking surface. In an emergency braking situation in which the elevator car is moving upward, the brake shoe may be configured to move in a direction of rotation of the braking surface. An elevator brake may include a brake frame, a brake plate, a wedge piece, a brake shoe, at least one spring element, and at least one electromagnet.