elevator

Abstract

To provide an elevator capable of preventing malfunctions of the emergency stop device. [Solution] The elevator of the embodiment includes a car 2 that moves up and down along a guide rail in a hoistway, an emergency stop device 10A provided on the car 2 and configured to be able to bring the car to an emergency stop by electrical control when the speed of the car 2 exceeds a predetermined speed, a battery 32 configured to be able to supply power to a power line that supplies power to the emergency stop device 10A, and a determination unit 22 that controls the supply of power from the battery 32 to the power line during normal operation and in the event of a power outage.

Claims

1. A car that moves up and down along guide rails within the elevator shaft, An emergency stop device is provided in the elevator car and is configured to allow the elevator car to be brought to an emergency stop by electrical control when the speed of the elevator car exceeds a predetermined speed. A battery configured to supply power to the power line that supplies power to the emergency stop device, A determination unit controls the supply of power from the battery to the power line during normal operation and in the event of a power outage. An elevator equipped with [a certain feature].

2. The system further comprises a relay connected between the battery and the power line, The determination unit turns on the relay when the system transitions from normal operation to a power outage. The elevator according to claim 1.

3. The determination unit estimates the remaining battery charge based on the battery discharge time since the power outage occurred, and if the remaining battery charge is below a predetermined amount, it sends a command to stop operation to the operation control unit. The operation control unit, in response to the operation stop command, causes the elevator car to land at the nearest floor. The elevator according to claim 1.

4. The determination unit determines whether or not a power outage has occurred based on the potential of the power line. The elevator according to claim 3.

5. The system further comprises a safety switch connected in series with the power line and configured to turn off when the emergency stop device grips the guide rail. The elevator according to claim 1.

6. A detection unit that detects that the emergency stop device has been activated based on the potential of the node between the safety switch and the emergency stop device, An operation control unit that stops the operation of the elevator car when the building power is restored after a power outage and the emergency stop device is activated, The elevator according to claim 5.

7. The aforementioned operation control unit will resume normal operation after the building power is restored following a power outage, provided that the emergency stop device is not activated. The elevator according to claim 6.

8. The system further comprises a charging power supply for charging the aforementioned battery. The elevator according to claim 1.

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