Patent classifications
B66B5/04
Method for performing a manual drive in an elevator after mains power-off
In a method for performing a manual drive in an elevator after mains power-off, the frequency converter of the motor is separated from mains, any safety blocking of the brake drive and/or motor drive is disabled, current is supplied from the battery to the brake drive to open the elevator brake and current is supplied from the battery to the drive control to allow regulation of the motor speed via the inverter bridge, the manual drive control observes the motor speed via the speed sensor and starts a speed feedback loop to regulate the motor speed to a manual drive reference value by feeding a three phase-AC current to the motor windings via the semiconductors of the inverter bridge, which manual drive speed reference is lower than the speed reference for normal elevator operation, when the car reaches a floor level the floor level indicator is activated, and the actuator is released whereafter the current supply from the battery to the elevator brake is interrupted and the previous disabled safety blocking of the brake drive and/or motor drive is enabled again.
Transportation device comprising a safety device for limiting deceleration
A transportation device such as an elevator installation, an escalator, or a moving walkway may comprise a person conveying unit and an electromagnetic linear drive for driving the person conveying unit. The electromagnetic linear drive may include a stator segment and a runner element. The runner element can be driven by the force of an electromagnetic field of the stator segment in a first drive direction or in an opposite second drive direction. The runner element is movably mounted on the person conveying unit such that a magnetic resistance in an air gap between the stator segment and the runner element is adjustable depending on a drive force acting between the stator segment and the runner element.
Stair lift
A stair lift eliminates a hindrance to the normal use of a staircase. The stair lift comprises two rails disposed along the staircase in parallel to the width of the staircase, a self-propelled gantry-shape carriage having a gantry-shaped structure, traveling on the rails with a restriction to prevent a derailment, and a lift step (1) disposed between left and right leg structures of the gantry-shape carriage and supported by a lifting mechanism provided in the leg structure. When the gantry-shape carriage stands by at a lower floor or a upper floor of the staircase, the lift step (1) lands on the floor adjacent to the staircase or a step of the staircase, and when the gantry-shape carriage travels on the rails, the lift step is held at a position preventing an interference with steps of the staircase. A user gets on the lift step (1) while standing.
ELEVATOR
An elevator includes a car, a counterweight, and a hoisting member connecting the car with the counterweight over a traction sheave. A free fall protection system includes a free fall protection controller, a free fall protection member connecting the car with the counterweight over the traction sheave or over a separate free fall sheave. The car and the counterweight are supported by the hoisting member in normal operation and by the free fall protection member only in a situation in which the hoisting member support fails. At least one free fall protection brake is arranged to stop the movement of the free fall protection member and thereby also the movement of the car and/or the counterweight, when being activated by the free fall protection controller.
ELEVATOR
An elevator includes a car, a counterweight, and a hoisting member connecting the car with the counterweight over a traction sheave. A free fall protection system includes a free fall protection controller, a free fall protection member connecting the car with the counterweight over the traction sheave or over a separate free fall sheave. The car and the counterweight are supported by the hoisting member in normal operation and by the free fall protection member only in a situation in which the hoisting member support fails. At least one free fall protection brake is arranged to stop the movement of the free fall protection member and thereby also the movement of the car and/or the counterweight, when being activated by the free fall protection controller.
Enhanced governor system for elevator
An overspeed assembly for use with a governor assembly for limiting of an elevator system, the overspeed assembly includes a rod movable relative to the governor assembly in response to a speed of an elevator car and a pin coupled to the rod. The pin is movable between a first position and a second position based on a direction of travel of the elevator car. The pin is configured to engage a first component to indicate a first overspeed condition when the elevator car is travelling in a first direction and the pin is configured to engage a second component to indicate a second overspeed condition when the elevator car is travelling in a second, opposite direction.
STAIR LIFT
A stair lift eliminates a hindrance to the normal use of a staircase. The stair lift comprises two rails disposed along the staircase in parallel to the width of the staircase, a self-propelled gantry-shape carriage having a gantry-shaped structure, traveling on the rails with a restriction to prevent a derailment, and a lift step (1) disposed between left and right leg structures of the gantry-shape carriage and supported by a lifting mechanism provided in the leg structure. When the gantry-shape carriage stands by at a lower floor or a upper floor of the staircase, the lift step (1) lands on the floor adjacent to the staircase or a step of the staircase, and when the gantry-shape carriage travels on the rails, the lift step is held at a position preventing an interference with steps of the staircase. A user gets on the lift step (1) while standing.
MACHINE-ROOM-LESS ELEVATOR
In a machine-room-less elevator, a hoisting machine is disposed directly above a counterweight. A counterweight speed governor is disposed higher than a position of the counterweight if a car descends to a floor portion of a hoistway and the counterweight jumps upward. When viewed from directly above, at least a portion of the counterweight speed governor is disposed at an identical position to a first counterweight guide rail in a width direction of the counterweight, and is disposed at an identical position to a portion of a suspending body between a driving sheave and a counterweight suspending sheave in a direction that is perpendicular to the width direction of the counterweight.
MACHINE-ROOM-LESS ELEVATOR
In a machine-room-less elevator, a hoisting machine is disposed directly above a counterweight. A counterweight speed governor is disposed higher than a position of the counterweight if a car descends to a floor portion of a hoistway and the counterweight jumps upward. When viewed from directly above, at least a portion of the counterweight speed governor is disposed at an identical position to a first counterweight guide rail in a width direction of the counterweight, and is disposed at an identical position to a portion of a suspending body between a driving sheave and a counterweight suspending sheave in a direction that is perpendicular to the width direction of the counterweight.
PRESSURE SENSOR ALGORITHM TO DETECT ELEVATOR STATUS INFORMATION
A method of monitoring motion of a conveyance apparatus within a conveyance system is provided. The method including: detecting a first atmospheric air pressure proximate the conveyance apparatus at a first time and a second atmospheric air pressure proximate the conveyance apparatus at a second time using the pressure sensor located on the conveyance apparatus; determining a change in atmospheric air pressure proximate the conveyance apparatus in response to the first and second atmospheric air pressure; detecting a height change of a conveyance apparatus in response to at least the change in atmospheric air pressure; and confirming or disconfirming the height change using at least one of a rate of change in atmospheric air pressure prior to the first time, an acceleration of the conveyance apparatus, a rate of change in static atmospheric air pressure, a rate of change in temperature, and a rate of change in relative humidity detection.