A high-speed and full-drive elevator has a double-tractor full-drive structure installed inside the lift well, having a lift car, counterweight device, upper traction system disposed above the lift car, and bottom traction system disposed below the lift car. The upper traction system contains an upper wire rope, upper traction wheel and upper guide pulley. One end of the upper wire rope is connected with the top of the counterweight device. The other end is connected with the top of the lift car after passing through the upper guide pulley and upper tractor successively. The bottom traction system has a bottom wire rope, bottom traction wheel and bottom guide pulley. One end of the bottom wire rope is connected with the bottom of the counterweight device. The other end is connected with the bottom of the lift car after passing through the bottom guide pulley and bottom tractor successively.

A method and a monitoring device determine a wear state of components such as a cable-like suspension means, a traction sheave of a drive machine and deflection rollers of a suspension means arrangement of an elevator system. The method comprises at least the following steps: monitoring an actual time curve of a first parameter which correlates with the wear state of at least one first monitored component of the components; comparing the actual time curve of the monitored first parameter with a predetermined expected time curve of the first parameter; and determining the wear state of the monitored component based on a result of the comparison.

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.

The invention relates to a method for testing a traction sheave elevator, which elevator comprises a traction sheave; a motor for rotating the traction sheave; a roping passing around the traction sheave; and a first movable unit; a second movable unit; and a stopping device for stopping descent of the first movable unit. The method comprises performing a test sequence comprising: rotating the motor to move the second movable unit upwards; resisting downwards movement of the first movable unit with the stopping device during said rotating; monitoring torque of the motor during said rotating, comprising detecting if the torque of the motor reaches, in particular rises to, a limit torque during said rotating; monitoring amount or duration of rotation of the motor or the traction sheave during said rotating, comprising detecting if the amount or duration of rotation after said detecting reaches a predetermined limit amount or limit duration; and stopping the rotating if the amount or duration of rotation after said detecting reaches a predetermined limit amount or limit duration. The invention also relates to an elevator implementing the method.

An elevator machine support structure (30) comprises a machine bedplate (32) for supporting an elevator machine (5) on a first side of the machine bedplate (32); and a tension member dead end hitch (36) that is configured for mechanically coupling with an end of at least one elevator tension member (3). The tension member dead end hitch (36) extends from a second side of the machine bedplate (32) opposite to the first side.

An elevator construction arrangement includes: a hoistway; an elevator car, a counterweight, car guide rails, and counterweight guide rails; an elevator hoisting machinery and a high friction coated suspension roping mounted on first and second rope suspenders and arranged to suspend the car and the counterweight during construction time use; a protection deck mounted within the hoistway during an elevator jump operation in the hoistway; a hoist device configured to move the car or at least parts of the car below the protection deck, the car being guided on the car guide rails. The arrangement includes, arranged on top of the car, a first folding pulley beam with first folding pulleys having a small or reduced diameter, and a smaller bending radius of the high friction coated suspension roping is adapted to cooperate with the small or reduced diameter of the first folding pulleys.