Invention Grant
US08365872B2 Elevator device having the plurality of hoisting machines 有权
具有多台曳引机的电梯装置

Elevator device having the plurality of hoisting machines
Abstract:
In an elevator device, a car is raised and lowered by a plurality of hoisting machines respectively including hoisting machine brakes. Each of the hoisting machine brakes has a braking force large enough to stop the car by itself. Each of a plurality of brake control sections respectively for controlling the corresponding hoisting machine brakes includes a plurality of calculation sections. The calculation sections can detect a failure of the calculation sections by comparing own results of calculations and cause a corresponding one of the hoisting machine brakes to perform a braking operation upon detection of the failure of the calculation sections.
Public/Granted literature
Information query
Patent Agency Ranking
0/0