Abstract:
In the method and elevator of the invention, which preferably is an elevator without machine room, in which elevator the elevator car is at least partially supported by a set of hoisting ropes. The hoisting ropes comprise one rope or a number of parallel ropes. The elevator has a traction sheave which moves the elevator car by means of the hoisting ropes. The elevator comprises rope portions of hoisting ropes going upwards and downwards from the elevator car, and the rope portions going upwards from the elevator car are under a first rope tension (T
Abstract:
A hoisting machine rope (10), which has a width larger than its thickness in a transverse direction of the rope, which comprises a load-bearing part (11) made of a composite material, said composite material comprising non-metallic reinforcing fibers, which consist of carbon fiber or glass fiber, in a polymer matrix. An elevator, which comprises a drive sheave, an elevator car and a rope system for moving the elevator car by means of the drive sheave, said rope system comprising at least one rope whose width (t2) is larger than its thickness (tl) in a transverse direction of the rope, and the rope comprises a load- bearing part (11) made of a composite material, said composite material comprising reinforcing fibers in a polymer matrix.
Abstract:
The object of the invention is an arrangement in the overspeed governor of an elevator, which elevator comprises at least one safety gear (12b) disposed in connection with the elevator car (1) as well as an overspeed governor (10). The overspeed governor comprises at least an overspeed governor pulley (12), the rope (11) of the overspeed governor and also a frame (13) and a locking element (15) with its axis of rotation (20) for stopping movement of the overspeed governor rope (11), which locking element (15) is arranged to turn around its axis (20) when the overspeed governor trips. The overspeed governor (10) further comprises permanent magnets (17) for forming a magnetic field. When the overspeed governor trips, the locking element (15) is arranged to move, in addition to its turning movement, essentially in the direction of the radius of its axis of rotation (20).
Abstract:
The invention relates to an elevator provided with a safety gear arrangement, said elevator comprising at least an elevator car (2) arranged to travel back and forth substantially vertically along guide rails (4), at least two safety gear mechanisms (12, 13) disposed in conjunction with the elevator car (2) and at least one speed limiter (7), which comprises at least a speed limiter pulley (8), a diverting pulley (9) and a speed limiter rope (10) fitted as a loop around at least the speed limiter pulley (8) and the diverting pulley (9), said speed limiter rope (10) being connected at least to a first safety gear mechanism (12). A second safety gear mechanism (13) has been arranged to be triggered after the triggering of the first safety gear mechanism (12).
Abstract:
Rope of a hoisting apparatus, more particularly of a passenger elevator, which comprises a plurality of parts (T1, T2), which continue unbroken for essentially the whole length of the rope, which parts are preferably load-bearing parts. At least one (T2) of the aforementioned parts (T1, T2) is arranged to be essentially more susceptible to breakage in relation to the number of bends than the other (T1) aforementioned parts.
Abstract:
The invention relates to a method for detecting wear of the diverting and/or drive pulleys of an elevator, and to an elevator. In the method, a limit value is assigned to at least one of the following quantities: allowed displacement of the rope end against the spring force of a spring, allowed rope force of the rope, allowed tension of the rope, compression of the spring holding the rope, tension of the spring holding the rope, stress of the supporting structure adjacent to the rope fastening. During operation of the elevator, the displacement of an individual rope or another one of the above-mentioned quantities in relation to the corresponding quantity for the other ropes is detected from the sprung fastening arrangement of the rope ends. An alarm signal is generated if this quantity for an individual rope exceeds the predetermined limit value during operation of the elevator. An excess of the limit value is due to an increased rope force and indicates greater than normal wear of the rope groove of the diverting and/or drive pulley corresponding to the individual rope. To detect wear of the rope grooves (3) of the diverting and/or drive pulleys (4, 5), the elevator comprises a detector device (9) arranged in conjunction with the sprung fastening device (7).
Abstract:
A hoisting device rope has a width larger than a thickness thereof in a transverse direction of the rope. The rope includes a load-bearing part made of a composite material, said composite material comprising non-metallic reinforcing fibers, which include carbon fiber or glass fiber, in a polymer matrix. An elevator includes a drive sheave, an elevator car and a rope system for moving the elevator car by means of the drive sheave. The rope system includes at least one rope that has a width that is larger than a thickness thereof in a transverse direction of the rope. The rope includes a load-bearing part made of a composite material. The composite material includes reinforcing fibers in a polymer matrix.
Abstract:
The invention relates to an elevator system and also to a method for monitoring the movement an elevator car. In the method a first emergency braking procedure is activated for braking the elevator car at a first deceleration if the speed of the elevator car exceeds the first limit value for permitted speed, and also a second emergency braking procedure is further activated for braking the elevator car at a second deceleration that is greater than the first, if the speed of the elevator car exceeds the second limit value for permitted speed that is greater than the first limit value for permitted speed.
Abstract:
Elevator, which comprises at least an elevator car and means for moving the elevator car, preferably along guide rails, and an overspeed governor arrangement, which comprises an overspeed governor rope, which moves according to the movement of the elevator car, and which overspeed governor rope is connected to a brake arrangement that is in connection with the elevator car such that with the overspeed governor rope force can be transmitted to the brake arrangement for shifting the brake comprised in the brake arrangement into a braking position. The rope comprises a power transmission part or a plurality of power transmission parts, for transmitting force in the longitudinal direction of the rope, which power transmission part is essentially fully of non-metallic material.
Abstract:
The invention relates to a condition monitoring method for a rope of a lifting device, more particularly of a passenger transport elevator and/or freight transport elevator, wherein the condition of the rope is monitored by means of an optical fiber and/or fiber bundle (2), and if it is detected that the strain and/or displacement of an optical fiber and/or fiber bundle (2) has increased and/or the condition of same has decreased over a certain pre-defined limit value, a need to replace or overhaul the rope or ropes is diagnosed and rope replacement work or rope maintenance work is started.