An attic lift system is provided, comprising a loading platform attached to a lifting frame having a plurality of vertical frame members, wherein the lifting frame includes a closure member positioned below the loading platform. The closure member includes a plurality of telescopic guide members, wherein the support frame is positioned on an attic floor above an opening in the attic floor. A plurality of support rods extend from the closure member and are threadably engaged with the vertical frame members of the lifting frame. A drive assembly is positioned on the support frame and connected to the lifting frame for raising and lowering the loading platform relative to the opening. Limit switches are present to detect when the drive assembly should be stopped based on the position of the lift platform.

An elevator traction system and an elevator system. The elevator traction system includes: a car side wheel train; a transition wheel train; a counter-weight side wheel train; and a rope including a first end and a second end that are fixed to the top of a hoistway, the rope passing through the car side wheel train, the transition wheel train, and the counter-weight side wheel train sequentially, the car side wheel train including a first sheave and a third sheave that are fixed to the top of a car and a second sheave that is fixed to the top of the hoistway, wherein the first sheave and the third sheave are arranged to be parallel to each other and perpendicular to the second sheave. The elevator traction system and the elevator system according to embodiments of the present invention have a compact layout and a high hoistway utilization rate.

A device for limiting sway in a travelling cable (6) in an elevator system is provided. The device comprises: a channel extending in a first direction for receiving the travelling cable (6) therein, wherein the channel is configured to be mounted in an elevator hoistway (2) such that the first direction corresponds to a direction of motion of an elevator car (4) within the hoistway (2); and an element (20) configured to move in the first direction along an open side of the channel simultaneously with an elevator car (4) and to push the travelling cable (6) into the channel when the element (20) moves along the open side thereof.

An elevator includes a compensating sheave, a compensating rope, a guide, a holder, a driver, a lateral vibration detector, and driver controller. The compensating rope is looped around the compensating sheave to be bent back upward in a hoistway, and has a first end connected to a car and a second end connected a counterweight, the compensating rope suspended from the car and the counterweight. The guide guides the compensating sheave in a vertically displaceable manner. The holder holds the guide to be displaceable in a horizontal direction. The driver drives the holder in the horizontal direction. The lateral vibration detector detects lateral vibration of the compensating rope. The driver controller controls the driver based on a result of detection by the lateral vibration detector and accordingly drive the holder in the horizontal direction so as to dampen lateral vibration of the compensating rope.

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.

A car for an elevator in an elevator shaft is suspended substantially in the center of gravity thereof at least in a ratio of 2:1 by a carrying apparatus guided via pulleys and is guided through car guides. The car has a car base, a car roof and car walls that define a passenger space. For using the car in a machine room-free elevator, to provide a shaft cross-section as large as possible and to reduce the required shaft pit depth and/or the required shaft head height, at least a first part of one of the pulleys is located between the car base and the car roof and a second part of the pulley is located in the car base or at the same height as the car base or in the car roof or at the same height as the car roof.

A building site device includes a climbing formwork platform for the floor-by-floor production of concreting portions of a building core having at least one elevator shaft. An elevator system has an elevator machine platform vertically movable in the elevator shaft. In order to minimize the use of lifting cranes and the manual raising of supporting structures, the elevator machine platform can be moved jointly with the climbing formwork platform.

A yoke assembly for suspending an elevator car or a counterweight in a shaft of an elevator has a yoke adapted to be mechanically coupled to the elevator car or the counterweight. The yoke has a height with respect to a height axis and a length with respect to a longitudinal axis orthogonal to the height axis; a pulley for suspending the yoke, wherein the pulley has a diameter equal to or less than the height of the yoke and is attached to the yoke so as to be rotatable about an axis of rotation whose position with respect to the height axis is such that the pulley does not protrude beyond the yoke in either direction of the height axis; wherein, when the yoke is suspended in the shaft, the height axis is a vertical axis and the axis of rotation is a horizontal axis.

An elevator includes a compensating sheave, a compensating rope, a guide, a holder, a driver, a lateral vibration detector, and driver controller. The compensating rope is looped around the compensating sheave to be bent back upward in a hoistway, and has a first end connected to a car and a second end connected a counterweight, the compensating rope suspended from the car and the counterweight. The guide guides the compensating sheave in a vertically displaceable manner. The holder holds the guide to be displaceable in a horizontal direction. The driver drives the holder in the horizontal direction. The lateral vibration detector detects lateral vibration of the compensating rope. The driver controller controls the driver based on a result of detection by the lateral vibration detector and accordingly drive the holder in the horizontal direction so as to dampen lateral vibration of the compensating rope.

A belt includes one or more tension members extending along a length of the belt, a jacket at least partially enclosing the plurality of tension members, and one or more layers of one or more of a fluorescent, absorbing, or reflecting material located in the belt such that when subjected to a light source, an indication of fluorescence or absorbance or reflection of the one or more layers of fluorescent or absorbent or reflective materials is indicative of a wear condition of the belt.