| 摘要 |
An elevator has a car movable vertically in a hoistway, a main rope for suspending the car, and a hoist including a drive sheave over which the main rope is passed and vertically moving the car by rotation of the drive sheave. A safety device for the elevator has a hoist brake device for braking rotation of the drive sheave to apply braking force to the main rope, an auxiliary brake rope as a separate body from the main rope, an auxiliary brake pulley provided at the upper part of the hoistway and over which the auxiliary brake rope is passed, and an auxiliary brake device for applying braking force to the auxiliary brake rope. The car receives braking force from the main and auxiliary brake ropes by operation of the hoist brake device and the auxiliary brake device, respectively, and is braked by the braking force that the car receives.
|
