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:
The invention relates to an electronic unintended movement governor (1 ), which comprises an input for car position data (2), means (4) for determining the speed of the elevator car, a plurality of limit values for permitted movement of the elevator car, such as the limit value (36, 37) of the maximum permitted speed of the elevator car, and which unintended movement governor also comprises overspeed monitoring (11 ) for controlling at least one stopping appliance of the elevator car when the speed (38) of the elevator car exceeds the limit value (36, 37) of the maximum permitted speed. The unintended movement governor comprises at least two separate controls (12, 13) for controlling a stopping appliance (14, 15) of the elevator car. Additionally, the invention relates to a method for controlling the aforementioned electronic unintended movement governor (1 ).
Abstract:
The invention concerns a method and system for forming a safety space in the lower part of an elevator shaft. To provide the required safety space, the floor (3) of the elevator car (2) is removed from its position over the safety space. This is preferably accomplished by turning the floor upward about a hinge (8) in the front edge of the floor so as to bring the floor to a position in front of the door of the elevator car.
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:
Elevator, preferably an elevator without machine room, comprising at least an elevator car (101) moving along guide rails (1), a counterweight (102) moving along guide rails (2) and an elevator motor (106) driving them, wherein the guide rails are fixed in place by means of guide fixing brackets (112). The width of the guide fixing bracket (112) in the vicinity of the car guide rails (1) is substantially equal to the width of the car guide rail plus the thickness of the rail clips in the guide fixing bracket.
Abstract:
The invention relates to an elevator system and also to a method for ensuring the safety of an elevator system. The elevator system comprises a driving member (1) and also a hoisting means (3), which engages with the aforementioned driving member (1) by frictional traction. The elevator system comprises traction determination means (4, 5, 6A, 6B, 7) for determining the traction of the driving member (1), and the elevator system comprises a control circuit (4), which is configured to start a procedure ensuring the safety of the elevator system after the traction determination means (4, 5, 6A, 6B, 7) have detected that the traction of the driving member (1) has weakened.
Abstract:
The invention relates to an elevator system and also to a method for monitoring the movement an elevator car (1). In the method a first emergency braking procedure is activated for braking the elevator car (1) at a first deceleration (a1) if the speed (v) of the elevator car exceeds the first limit value (vlim1) for permitted speed, and also a second emergency braking procedure is further activated for braking the elevator car (1) at a second deceleration (a2) that is greater than the first, if the speed (v) of the elevator car exceeds the second limit value (vlim2) for permitted speed that is greater than the first limit value (vlim1) for permitted speed.
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.