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 invention relates to an elevator having a hoistway, an elevator car movable in the hoistway and provided with a car brake, and a first coupling means movably mounted on the car, and a second coupling means mounted separate from the car at proximity of an end of the hoistway, the first and second coupling means being counterparts for each other and provided for being coupled in force-transmitting manner to each other, the car brake being triggerable by movement of the first coupling means. One of the first and second coupling means has coupling points at different vertical levels, and in the other of said first and second coupling means can couple to said one of the first and second coupling means at each of said coupling points. The invention also relates to a method for forming a safety space in the elevator.
Abstract:
The invention relates to a method and arrangement for installing an elevator, which comprises an elevator car arranged to run in an elevator shaft along the guide rails, a balancing weight connected to the elevator car with suspension ropes and with a traction member, the elevator comprising further a hoisting machinery with a driving wheel in the lower part of the elevator shaft below the elevator car, the installing comprising one or more jumps to make the elevator serve higher floors. During the jump phase extensions needed for the suspension ropes are taken from first supply reels and extensions needed for the traction member are taken from second supply reels.
Abstract:
An elevator may include: a hoisting machine; a set of hoisting ropes; a traction sheave that comprises a plurality of grooves; and diverting pulleys. The hoisting machine may engage the set of ropes via the traction sheave. Each groove may have an opening for receiving an individual rope. Each rope may include steel wires of circular, non-circular, or circular and non-circular cross-section, twisted together to form strands. The strands of each rope may be twisted together to form the respective rope. A thickness of each rope may be greater than or equal to about 2.5 mm and less than or equal to about 8 mm. An average of wire thicknesses of the steel wires may be greater than or equal to 0.1 mm and less than or equal to 0.4 mm. The strength of the steel wires may be greater than 2,300 N/mm2 and less than 3,000 N/mm2.
Abstract:
An elevator may include: an elevator car; a traction sheave that includes grooves; a hoisting machine configured to drive the traction sheave; and/or hoisting ropes configured to interact with the traction sheave to move the elevator car. An overall contact between the traction sheave and hoisting ropes may exceed a contact angle of 180°. A diameter of the traction sheave may be less than 320 mm. Each hoisting rope may include steel wires twisted together to form strands. The strands of each hoisting rope may be twisted together to form the hoisting rope. A thickness of each hoisting rope may be less than 8 mm. An average of wire thicknesses of the steel wires may be greater than or equal to 0.1 mm and less than or equal to 0.4 mm. A strength of the steel wires may be greater than 2,300 N/mm2 and less than 3,000 N/mm2.
Abstract translation:电梯可以包括:电梯轿厢; 包括凹槽的牵引滑轮; 构造成驱动牵引滑轮的曳引机; 和/或构造成与牵引滑轮相互作用以使电梯轿厢移动的提升绳索。 牵引滑轮和提升绳索之间的整体接触可能会超过180°的接触角。 牵引滑轮的直径可以小于320mm。 每个提升绳可以包括扭绞在一起以形成股线的钢丝绳。 每个提升绳索的绞线可以被扭绞在一起以形成提升绳索。 每个提升绳的厚度可以小于8毫米。 钢丝的线材厚度的平均值可以大于或等于0.1mm且小于或等于0.4mm。 钢丝的强度可以大于2,300N / mm 2且小于3,000N / mm 2。
Abstract:
An elevator may include: drive machine, hoisting ropes, traction sheave, elevator car, counterweight, and elevator car and counterweight guide rails. The drive machine may engage the hoisting ropes using the traction sheave. The hoisting ropes may support the elevator car on the elevator car guide rails and the counterweight on the counterweight guide rails. The hoisting ropes may include coated hoisting ropes of substantially circular cross-section. The hoisting ropes may have a load-bearing part twisted from steel wires of circular, non-circular, or circular and non-circular cross-section. A cross-sectional area of the steel wires may be less than about 0.2 mm2. A strength of the steel wires may be greater than about 2000 N/mm2. A core of each hoisting rope may include the load-bearing part. The core may be coated with a substantially thin sheath that forms a surface of the hoisting rope. The sheath may be softer than the core.
Abstract:
Elevator, comprising: a car of the elevator and a counterweight that are to be moved reciprocally; at least one roping or belting traveling via a top pulley assembly for connecting the car of the elevator and the counterweight to each other via the top pulley assembly; at least one roping or belting traveling via a bottom pulley assembly for connecting the car of the elevator and the counterweight to each other via the bottom pulley assembly. At least one roping or belting traveling via the bottom pulley assembly is pretensioned or can be pretensioned.An improvement for reducing elongation of the roping or belting of an elevator in a loading situation of the car of the elevator is produced when an elevator according to the invention is used in such a way that at least one roping or belting traveling via the bottom pulley assembly is pretensioned, in which case owing to the pretensioning at least one roping or belting traveling via the top pulley assembly and at least one roping or belting traveling via the bottom pulley assembly interact in such a way that the elasticity of the connected roping or belting to be formed in this way decreases compared to the situation before pretensioning.
Abstract:
An elevator may include an elevator car; a traction sheave that comprises a plurality of grooves; a hoisting machine configured to drive the traction sheave; and a plurality of beltless hoisting ropes configured to interact with the traction sheave to move the elevator car. An overall contact between the traction sheave and the hoisting ropes may exceed a contact angle of 180°. A diameter of the traction sheave may be less than 320 mm. The hoisting ropes may include a load-bearing part twisted from steel wires. A thickness of the load-bearing part twisted from the steel wires may be less than 8 mm. Each of the hoisting ropes may further include an individual exterior coating.