公开(公告)号：US20250153973A1

公开(公告)日：2025-05-15

申请号：US18937213

申请日：2024-11-05

Applicant: Otis Elevator Company

Inventor： Xingzhong Sun ,  Shan Li ,  Weilin Dai

IPC: B66B5/00 ,  B66B1/34 ,  B66B5/06

Abstract: An elevator emergency operation device with safety function testing capability. The device includes a connection unit and a control unit. The connection unit includes a first connection component adapted to be connected with a car status detection device and a second connection component adapted to be connected with a holding brake controller. The control unit is connected with the connection unit and is configured to perform various operations. In one operation, an elevator emergency operation function is performed in a first configuration state in which the first connection component and the second connection component are connected with the car status detection device and the holding brake controller, respectively. In another operation, in the first configuration state, releasing a holding brake associated with the holding brake controller and determining whether a seal star function is normal based on a first car status signal provided by the car status detection device.

公开(公告)号：US20240199375A1

公开(公告)日：2024-06-20

申请号：US18449430

申请日：2023-08-14

Applicant: Otis Elevator Company

Inventor： Xingzhong Sun ,  Shan Li ,  Weilin Dai

IPC: B66B5/00

CPC classification number: B66B5/0031

Abstract: A device and method for detecting a seal star function of an elevator system and readable storage medium on which a computer program for implementing the method is stored. The device for detecting a seal star function of an elevator system includes an elevator door bypass unit configured to enable power supply to an elevator motor and a holding brake when an elevator car is located in a set area and to cut off the power supply to the elevator motor and the holding brake when the elevator car leaves the set area; a control unit coupled with a safety relay and the elevator door bypass unit and configured to determine whether the seal star function is normal based on speed of movement of the elevator car within the set area.

公开(公告)号：US20250066161A1

公开(公告)日：2025-02-27

申请号：US18808656

申请日：2024-08-19

Applicant: Otis Elevator Company

Inventor： Xingzhong Sun ,  Shan Li ,  Weilin Dai

IPC: B66B13/22

Abstract: A device for monitoring a state of a landing and car door circuit includes a selection unit configured to couple a first landing door lock switch and a second car door lock switch with a power supply in a first connection state, and to couple a second landing door lock switch and a first car door lock switch with the power supply in a second connection state; and a processing unit coupled with the selection unit and configured to cause the selection unit to be in the first connection state or the second connection state, and to determine whether functions of the first landing door lock switch, the second landing door lock switch, the first car door lock switch and the second car door lock switch are normal.