Elevator shallow pit depth control device and control method

• Main Authors: LIANG JUNJIE, SU XUHAO, HUANG MINDONG, MO ZHENFENG
• Format: Patent
• Language: Chinese; English
• Published: 16.06.2020
• Subjects: ELEVATORS; ESCALATORS OR MOVING WALKWAYS; HAULING; HOISTING; LIFTING; PERFORMING OPERATIONS; TRANSPORTING

The invention discloses an elevator shallow pit depth control device and control method. The elevator shallow pit depth control device comprises any door capable of entering a pit, an electrical safety system, a detection switch, a limit switch, an electrical reset device, a heightening seat, a car buffer, a first in-place switch and a second in-place switch; and when an elevator maintainer uses akey outside a hall to open any door capable of entering the pit, the detection switch arranged on the corresponding door acts, then the electrical safety system is triggered to act, normal operationof an elevator is stopped, and only when the maintainer enters the pit and installs the heightening seat between the car buffer and the pit ground to enable the car buffer to be lifted, the elevator can be overhauled and operated, so that the safety of pit maintainers can be ensured even if the pit depth is small. According to the elevator shallow pit depth control device and the control method, it is guaranteed that the p