Abstract:
An elevator, without counterweight and preferably an elevator without machine room, in which the hoisting machine (10) engages the hoisting ropes (3) by means of a traction sheave (11), the elevator car (1) being at least partially supported by the hoisting ropes serving as a means of moving the elevator car (1). The elevator car is suspended on the hoisting ropes (3) by means of at least one diverting pulley (13,14) from whose rim the hoisting ropes go upwards from both sides and at least one diverting pulley (7,5) from whose rim the hoisting ropes go downwards from both sides of the diverting pulley, and in which elevator the guide rails are arranged on one side of the elevator car.
Abstract:
The invention also relates to a method for ensuring the internal tightness of an elevator hoisting rope (9) in an elevator provided with hoisting ropes (9). According to the method, each hoisting rope (9) is tightened after installation of the elevator to a desired tightness by twisting the rope by the required number of turns in the twisting direction of the braiding, in such manner that the first end of the rope (9) remains fastened to its anchorage while the second end of the rope is free so as to allow tightening.
Abstract:
A hoisting machine for an elevator, mounted on and fastened to one side of an elevator or counterweight guide rail. The machine comprises at least an elevator motor and a traction sheave driving the elevator ropes, and two operating brakes of the elevator. The hoisting machine is fastened to the guide rail via the operating brakes or by a point in the immediate vicinity of the operating brakes.
Abstract:
Traction sheave elevator consisting of an elevator car moving along elevator guide rails, a counterweight moving along counterweight guide rails, a set of hoisting ropes (3) on which the elevator car and counterweight are suspended, and a drive machine unit (6) driving a traction sheave (7) acting on the hoisting ropes (3) and placed in the elevator shaft. The drive machine unit (6) is of a flat construction. A wall of the elevator shaft is provided with a machine space with its open side facing towards the shaft, the essential parts of the drive machine unit (6) being placed in the space. The hoisting unit (9) of the traction sheave elevator consists of a substantially discoidal drive machine unit (6) and an instrument panel (8) mounted on the frame (20) of the hoisting unit.
Abstract:
An elevator drive machine includes multiple electric motors and a traction sheave. The traction sheave is placed between the motors. With this arrangement, a higher torque is generated by the drive machine as compared to conventional solutions. Furthermore, an elevator arrangement in which such a drive is utilized exhibits efficient space utilization.
Abstract:
An elevator drive machine includes a traction sheave and an electromechanical apparatus having at least two electric motors for driving the traction sheave. The traction sheave and the weight applied to it via the elevator ropes are supported by bearings between the stators and rotors of the electric motors driving the traction sheave of the drive machine.
Abstract:
A procedure and apparatus for the measurement of elevator load uses a load measuring apparatus. The elevator comprises an elevator car (17) travelling along guide rails (2) in an elevator shaft, a counter-weight (20), a hoisting machinery (18, 19), a control unit, and hoisting ropes (11) attached at least by one end to an anchorage (21) in the elevator shaft. The load measuring apparatus (16) comprises a strain gauge (15) which outputs an electric signal corresponding to the load. The load measuring apparatus (16) is attached in conjunction with the anchorage (21) of the hoisting rope ends to a fixed place in the elevator shaft.
Abstract:
Traction sheave elevator in which the drive machinery together with the traction sheave is placed in the elevator shaft. The hoisting ropes go upward from the traction sheave. In the cross-section of the elevator shaft, the vertical projections of the elevator car, counterweight and the traction sheave of the drive machinery are separate from each other.
Abstract:
Device (100) for rotating an elevator motor during an emergency situation, such as a power failure, comprising a d.c. supply (4) and a rotary switch (8) used as a switching device for supplying a d.c. voltage into the windings (R-S, R-T, S-T) of the elevator motor (1). The d.c. voltage (DCC+, DCC-) controlled by the rotary switch is fed by turns into each winding (R-S, R-T, S-T). In addition, the device comprises a switch (6) used to supply a voltage to the brake (3) and to short-circuit the windings.
Abstract:
The object of the invention is an elevator arrangement, which comprises at least two elevator cars that are connected to each other with suspension ropes or corresponding and are configured to move simultaneously with each other and reciprocally in an elevator hoistway, and a hoisting machine provided with at least one traction sheave or corresponding. The arrangement comprises at least one compensation means for compensating positioning inaccuracies caused by loading of the elevator cars.