The invention discloses an elevator maintenance safety device. The elevator maintenance safety device comprises a car frame upper beam, a fixing shaft, a fixing plate and an inserting hole, wherein the fixing shaft can be glidingly arranged on the car frame upper beam; the fixing plate is fixed to a shaft and corresponds to the fixing shaft; the inserting hole is formed in the fixing plate for the fixing shaft to be inserted; an electric automatic reset switch which can be triggered to transmit an elevator safety circuit-off signal is fixedly arranged on the car frame upper beam and is provided with a contact which can be automatically bounced to be reset; the electric automatic reset switch is positioned on the side, in the movement direction in which the fixing shaft is outwards glidingly inserted into the inserting hole; when the fixing shaft slides, the side surface of the fixing shaft laterally compresses and triggers the electric automatic reset switch; a groove for the contact to reset and bounce is also formed in the side surface of the fixing shaft. Due to the fact that the fixing shaft is matched with the electric automatic reset switch, only after the fixing shaft is completely plugged out of the inserting hole in the fixing plate and the electric automatic reset switch enters the groove, automatic reset is performed, an elevator safety circuit is electrified, and the elevator maintenance safety device is safe and reliable.
Elevator maintenance safety device
2015-07-29
Patent
Elektronische Ressource
Englisch
IPC: | B66B Aufzüge , ELEVATORS |