Abstract: A compensation guide, counterweight screen, traction elevator and method for guiding a compensation element are disclosed. The compensation guide includes a horizontally directed guide opening through which the compensation guide passes. The guide is mounted vertically movably to the counterweight screen.

Abstract: An elevator installation and a method of operating the elevator system for temporary transportation of an overload within the elevator installation includes a car and a counterweight interconnected by one or more suspension ropes engaging a traction sheave that is driven by a motor. The traction between the suspension ropes and the traction sheave is enhanced independently of the counterweight for intended overload operation.

Abstract: An illustrative example embodiment of an elevator compensation assembly includes at least one compensation sheave having an outer surface configured to engage a plurality of compensation rope members. A guard has an inner surface situated adjacent the outer surface of the compensation sheave. A plurality of dividers that extend away from at least one of the outer surface of the compensation sheave or the inner surface of the guard. The dividers establish a space between adjacent ones of the dividers for accommodating a compensation rope member.

Abstract: A guide device and an elevator system are provided by the present application. The guide device is configured to guide a compensation chain of an elevator system and includes: a fixed mechanism, which is configured to install to an elevator hoistway, for example a stationary object such as a hoistway wall, a rail or a pit ground, and provide support for the guide device; and a guide mechanism connected to the fixed mechanism; wherein in a state where the guide mechanism is subjected to an external force exceeding a preset value, the guide mechanism is capable of reciprocating in a vertical direction relative to the fixed mechanism.

Abstract: An elevator system having: an elevator car vertically movable in an elevator shaft; a traction medium for raising and lowering the elevator car and being guided around at least one roller to the car and being fixed merely at ends thereof; a traction medium reservoir including at least one first deflecting axle and at least one second deflecting axle around which the traction medium is guided in alternation between the first and second axles so that a section, the length depending on the spacing of the first and second axles, of the traction medium is received in the reservoir; and a fixing unit to which the second deflecting axle is fixed, wherein the fixing unit is fastenable at different positions in the elevator shaft so that the spacing between the first and second axles is settable to determine the length of the traction medium received in the reservoir.

Abstract: In an elevator apparatus, a safety device is activated using a force that is generated by a mass body that includes sheaves and a rope, if acceleration of a car reaches an abnormal acceleration set value. A tensioning sheave that can be moved vertically in order to apply tension to the rope is included among the sheaves. A vertical vibration suppressing apparatus that is connected to the tensioning sheave allows vertical displacement of the tensioning sheave during normal operation while also suppressing vertical vibration of the tensioning sheave if the acceleration of the car reaches the abnormal acceleration set value.

Abstract: An arrangement for installing a set of elevator ropes includes one or more rope reels storing the set of elevator ropes, a rope wheel arrangement mounted on a fixed base comprising one or more rope wheels, a first rope guide detachably mounted in proximity of said one or more rope wheels of the rope wheel arrangement, and a second rope guide detachably mounted in proximity of said one or more rope wheels of the rope wheel arrangement. The ropes of the set of elevator ropes are arranged to pass from the one or more rope reels to said one or more rope wheels of the rope wheel arrangement via the first rope guide, which is arranged to guide the ropes to converge a rim of said one or more rope wheels at least substantially vertically, to turn around said one or more rope wheels, and to pass away from the one or more rope wheels via the second rope guide, which is arranged to guide the ropes to diverge from a rim of said one or more rope wheels at least substantially vertically.

Abstract: An elevator comprising a hoistway; an elevator car vertically movable in the hoistway; a counterweight vertically movable in the hoistway; at least one tightening wheel located in the lower end of the hoistway; at least one rope wheel located in or at least in proximity of the upper end of the hoistway; a first roping interconnecting the car and counterweight and passing around the at least one rope wheel located in or at least in proximity of the upper end of the hoistway; a second roping interconnecting the car and counterweight and passing around the at least one tightening wheel, the tightening wheel being mounted movably back and forth in a first direction towards the second roping, and in a second direction away from the second roping; and means for exerting force on the tightening wheel to move it in the first direction so as to tighten the second roping.

Abstract: The object of the invention is a tensioning arrangement for a traction means of an elevator, which arrangement comprises at least an elevator car configured to move up and down in an elevator hoistway and at least one or more compensating weights, which are for their part connected to support the elevator car by the aid of their own support means, such as by the aid of ropes or belts and also of diverting pulleys, and a hoisting machine provided with at least one traction sheave or corresponding, and also at least one traction means (7) such as a belt, rope or chain, which is configured to transmit the rotational movement of the traction sheave into movement of the elevator car and of the compensating weights. The traction means (7) is fixed from at least one of its ends to a fixing means (1) providing an essentially constant tensioning force.

Abstract: A safety device main body that is inserted inside a lower frame of a car frame includes a braking member. A guiding apparatus includes a guide shoe that is displaceable inside the safety device main body between a guided position that is guided by a guide rail and a retracted position that is removed from the guided position. The guide shoe is disposed in the guided position when the braking member is separated from the guide rail. An actuating apparatus displaces the guide shoe toward the retracted position while displacing the braking member in a direction of contact with the guide rail. The safety device main body, the guiding apparatus, and the actuating apparatus are supported together by a supporting body. The supporting body is mounted onto the lower frame from below using a mounting aperture that is previously disposed on the lower frame.

Abstract: The object of the invention is a tensioning arrangement for a traction means of an elevator, which arrangement comprises at least an elevator car configured to move up and down in an elevator hoistway and at least one or more compensating weights, which are for their part connected to support the elevator car by the aid of their own support means, such as by the aid of ropes or belts and also of diverting pulleys, and a hoisting machine provided with at least one traction sheave or corresponding, and also at least one traction means (7) such as a belt, rope or chain, which is configured to transmit the rotational movement of the traction sheave into movement of the elevator car and of the compensating weights. The traction means (7) is fixed from at least one of its ends to a fixing means (1) providing an essentially constant tensioning force.

Abstract: A compensation device of a traction sheave elevator is provided. The elevator includes a compensation rope running from an elevator car to a compensation sheave of the compensation device located in the lowermost part of the elevator shaft around which the compensation rope runs. The compensation sheave is vertically guided with respect to the shaft bottom via a guiding structure, which allows a vertical movement of the axis of the compensation sheave. The guiding structure includes at least one scissor joint arrangement having its lower end adapted to be connected with an elevator shaft bottom and its upper end being connected with the compensation sheave axis. An elevator includes such kind of compensation device. Vertical movement of the axis of a compensation sheave can be obtained with a very low shaft height requirement.

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: A hoisting machine is interposed between a wall of a hoistway and a car when viewed in a horizontally-projected perspective, and a drive sheave is located opposite the wall of the hoistway. Vibration prevention members are located between the hoisting machine and a mount member attached to fixing members in the hoistway. The vibration prevention members are located at surfaces of upper and lower portions of the mount member facing the hoisting machine, supporting the hoisting machine on the mount member from underside. As a result, vibration control of the hoisting machine can be readily achieved, and the torque acting on the hoisting machine is supported by horizontal rigidity of the vibration prevention member. Consequently, the hoisting machine can be attached to the mount member without failure. Vibration and noise, which would arise during operation of an elevator in a hoistway of a building, is reduced, thereby making the environment of the elevator silent.

Abstract: An elevator system includes an elevator hoistway defined in a surrounding structure, such as a building. An elevator car and counterweight are located in the hoistway. A drive motor and associated drive sheave are disposed at a bottom portion of the hoistway. The drive motor is coupled to the elevator car and the counterweight via at least one flat rope for moving the elevator car upwardly and downwardly along the hoistway.

Abstract: An elevator having a car and a suspension member or respectively hoisting member for carrying an operating weight. Furthermore, a power transmission is intended for moving the suspension member and the hoisting member over at least one moving surface of the power transmission. The power transmission and the suspension member or respectively hoisting member are rope-shaped and/or belt-shaped. Also, the power transmission and the suspension member or respectively hoisting member are physically separated from each other. The power transmission and the suspension member or respectively hoisting member are stretched against at least one supporting body.

Abstract: Method of detecting obstructions encountered by a motorized door. The method includes providing a signal processor with one or more signals indicative of a predetermined door trajectory profile for at least a segment of a stroke of the door, the door trajectory profile providing an ideal speed and/or position versus an elapsed time since a beginning of the segment of the stroke. A door position signal from a position encoder for the door is received into the signal processor. The method includes generating one or more signals indicative of the velocity and/or position of the door from the door position signal and generating a trajectory discrepancy signal based on the velocity and/or position in relation to the ideal speed and/or position. A motor control signal is generated based on the trajectory discrepancy signal and the motor control signal is connected to motor control circuits connected to drive the motor for the door.

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 having a car suspended by a rope in a 2:1 roping arrangement has a sheave for receiving the ropes and a structure for rotatably supporting the sheave. A flexible member is used to attach the structure to a car, which minimizes the transference of moments from the structure to the car. In addition, a damping material is used in mounting the flexible member to the car and support structure which reduces vibration and noise transmissions. Springs are also placed at the top and bottom of the flexible member to isolate low frequency vibrations in the vertical direction.