Abstract:
A hoistway landing door locking system includes an elevator shaft and an elevator car disposed within the elevator shaft and moveable therein between a plurality of access openings located at a plurality of levels of the elevator shaft. Also included is a mechanical locking assembly disposed proximate at least one of the access openings, the mechanical locking assembly operable to switch the access opening between a locked condition and an unlocked condition. Further included is an electromagnetic locking assembly operable between an energized condition and an unenergized condition, wherein the energized condition is required to switch the mechanical locking assembly from the locked condition to the unlocked condition.
Abstract:
The device (1) according to the invention for the safety stop of an elevator car (3), particularly in elevators without machine room and with a small free space at the top (4) and/or bottom (6) of the shaft in normal operation, is characterized in that it includes at least one box (9, 9') mounted relative to the shaft and level with the speed limiting cable (5) of the car overspeed safety device and provided with an articulated fork element (15, 15') that has an end adapted to engage at least one attachment element (21, 23) tied to said speed limiting cable (5) of the car overspeed safety device (7) in the service position of the device to arrest the cable and thus cause a safety stop of the elevator car (3), and to be disengaged from said attachment element (21, 23) , in the inactive position, wherein said fork element (15) in the service position and the cable attachment element (21, 23) are located at an appropriate height in combination with each other in the elevator shaft for the engagement of the attachment element (21, 23) with the fork element (15) to cause the arrest of the elevator car at an adequate height in the shaft to leave at least a safety space for the operator on the cabin roof (37) or in the shaft bottom (6).
Abstract:
The elevator has a car movable vertically within a shaft between lower and upper end positions and a drive system coupled to a traction system for controlling movement of the car. A limit switch which is open when the car is in a selected distance range from one of the end positions. The limit switch forms part of a power line supplying power to the drive system for controlling movement of the car in a direction towards that end position in an inspection operation. Thus movement of the car is prevented only in that direction when the car is in the selected distance range in an inspection operation.
Abstract:
The safety device for an elevator system comprises a retractable element mounted on a support. The retractable element has a stopping position in which a catch portion of the retractable element projects from the support to engage a triggering member of a safety brake associated with an elevator car as the elevator car traveling in a selected direction approaches a selected vertical position, and a retracted position. An actuator selectively controls the position of the retractable element. A position sensor is responsive to the position of the retractable element to make sure that it is in its stopping position when needed.
Abstract:
A self-diagnostic circuit includes an electrical conductor configured to multiplex, a first switch interposing the electrical conductor, and a first module crossing the first switch. The first module includes a first receptor antenna associated with the conductor on one side of the first switch, a first emitter antenna associated with the conductor on an opposite side of the first switch, and a first interfacing microprocessor. The first interfacing microprocessor is configured to receive no signal from the first receptor antenna when the first switch is open thus generating a first open signal and a first address signal indicative of the first module and outputting the first open signal and the first address signal to the conductor via the first emitter antenna. The first interfacing microprocessor is further configured to receive a first induced frequency signal from the first receptor antenna when the first switch is closed thus generating a first closed signal and the first address signal indicative of the first module and outputting the first closed signal and the first address signal to the conductor via the first emitter antenna.
Abstract:
An elevator system includes a primary power source configured to generate a first power. An elevator car includes an energy sub-system embedded therein. The energy sub- system is in electrical communication with the primary power source to buffer the first power and to generate a second power for powering a drive sub-system that drives the elevator car.
Abstract:
The machine room according to the invention with a flat rope or thin rope drive machine is, characterized in that the elevator controller device (19) is placed near the machine frame (17) equipped with the return pulleys and is higher than the floor (11) of the machine room by at least the same height as that of the machine frame (17), and in that a work platform (29) is arranged in front of the controller device (19), over or on the machine frame (17), at least on part of its upper part, so as to allow operator access to the controller device (19) from said platform (29).
Abstract:
The invention relates to a safety lock (1) for an elevator landing door detecting intrusion of a person in the shaft through the landing door, activating a bistable switch (21) through its spindle lever (11) putting the elevator into safe operation when the landing door is opened by turning the corresponding key, it being impossible to reset the switch (21) manually from the inside of the shaft, which comprises a device (17) fixing the lock in the open position with the door open, that is released when the door is closed such that the switch (21) can be reset by turning the lock (1) in the closing direction of the door in which the key is turned in the opposite direction to the opening direction, the switch (21) being reset mechanically by a mechanical means connected to the spindle lever (11).
Abstract:
The device to rescue passengers trapped in a stalled elevator car according to the invention is characterized in that it comprises means for disconnecting the power supply of the car drive motor and connecting it as a generator to brake any displacement of the car, means (5) for pulling the motor brake shoes, and hand wheel means (7) arranged at the end of the brake and motor shaft (43) in order to rotate the brake and motor shaft (43) as required if the car and counterweight loads stand at equilibrium, in viewing and controlling the rotating motion of said shaft until the car can be brought to a nearby landing and said passengers can be released.
Abstract:
The safety device according to the invention for operator protection in elevators with a low-height shaft bottom (5), is characterized in that it uses a brace (1) hinged on a base plate (3) secured to the bottom of the shaft (5) and arranged when folded in the horizontal position at a reduced height above the shaft bottom (5) in normal elevator operation, and a buffer element (9) secured underneath the car (11) and adapted to come into contact with a horizontal side surface of the brace (1) in its folded position, wherein said brace (1) is adapted to be moved by an appropriate lifting device (31) to a vertical lifted position in which the buffer element (9) can come into contact with an upper surface (15) of the brace (1), in a condition where the operator can work in the shaft bottom (5), wherein the length of the 15 brace added (1) to the thickness of the buffer element (9) provides for a sufficient depth between the underside of the car (11) and the shaft bottom (5) to suppress any risk for the operator to be crushed in the shaft bottom (5).