The invention relates to a traction wheel for an elevator for driving plurality of belts, comprising a central axis; plurality of circular rim surfaces side by side in axial direction against each of which a belt can be placed to pass; and circular guide flanges on axial sides of each rim surface for guiding a belt placed to pass against the rim surface. Each of said guide flanges comprises a circular array of guide parts, plurality of which guide parts comprises a guide surface portion for guiding a belt, which guide surface portion is movable towards the central axis. The invention also relates to a drive machinery and an elevator implementing the traction wheel.

An elevator includes a hoistway; an elevator car vertically movable in the hoistway, the passage to and/or from the elevator car being provided in depth direction of the hoistway; a counterweight vertically movable in the hoistway beside the elevator car in width direction of the hoistway; one or more ropes interconnecting the elevator car and the counterweight and hanging from these; a rope wheel arrangement in the bottom end of the hoistway for guiding the one or more ropes; and a vertically oriented guide rail for guiding the elevator car extending between the elevator car and counterweight. The elevator includes a bridge structure mounted on the floor of the hoistway, the bridge structure including a cross member, wherein the guide rail for guiding the elevator car is mounted on top of the cross member, the bridge structure including a passage for the one or more ropes below the cross member, and the one or more ropes pass from the counterweight downwards to the rope wheel arrangement, and the rope wheel arrangement is arranged to guide the one or more ropes to pass below the cross member via said passage and up to the elevator car.

An illustrative example embodiment of system includes at least one detector that detects a horizontal position of elevator roping at a selected vertical location. The detector provides an indication of the horizontal position at the selected vertical location in two dimensions. A processor determines at least an amplitude and a frequency of sway of the elevator roping in each of the two dimensions at the selected vertical location based on the indication from the detector.

A force application assembly, an elevator and a method of elevator rescue. The force application assembly is provided for applying a force to an elevator car when the elevator car and a counterweight are in a balanced state, and the force application assembly includes: a first attachment portion, which is configured to be removably attached to an elevator hoistway; a second attachment portion, one end of which is removably fixed relative to the elevator car or the counterweight, and which is configured to be at least partially elastic; an actuation portion connected between the first attachment portion and the second attachment portion, wherein the first attachment portion is configured to be fixed relative to the actuation portion, and the second attachment portion is configured to be movable relative to the actuation portion; and an operation portion, which is associated with the actuation portion.

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.

An illustrative example embodiment of an elevator compensation assembly includes a tie down mechanism and at least one compensation sheave that has an outer surface configured to engage at least one compensation rope member. At least one damper is associated with the tie down mechanism for resisting movement of the tie down mechanism in at least one direction. At least one detector detects movement of the tie down mechanism along the direction and provides an output indicating at least one characteristic of the detected movement.

An illustrative example embodiment of an elevator compensation assembly includes a tie down mechanism and at least one compensation sheave that has an outer surface configured to engage at least one compensation rope member. At least one damper is associated with the tie down mechanism for resisting vertical movement of the tie down mechanism in at least one direction. At least one detector directly detects vertical movement of the tie down mechanism along the direction and provides an output indicating at least one characteristic of the detected vertical movement.

According to one embodiment, a method for monitoring hoisting ropes in an elevator system comprises measuring tension of each hoisting rope, calculating a mean value of the tension in the hoisting ropes, determining if the tension in any rope is significantly higher than the mean value and providing a signal that rope snag has been detected if the tension in any rope is significantly higher than the mean value.

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.

This invention is concerning a car suspending pulley device including a pair of beams provided parallel to each other on a lower portion of a car and a car suspending pulley arranged between the pair of beams and supported by the pair of beams. A weight suspending pulley is provided on a counterweight. The car and the counterweight are suspended from a main rope wrapped around the car suspending pulley and the weight suspending pulley. A compensating member is suspended between the beams and the counterweight. The compensating member includes a funicular body having a first end portion connected to only one of the pair of beams and a second end portion connected to the counterweight. The first end portion of the funicular body is located in a region of the one beam when viewed in a vertical direction.