| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a brake control device for an elevator, capable of reducing the capacity of a current control power source for continuously controlling the current without constituting a plurality of electromagnetic coils by one electromagnet. <P>SOLUTION: The brake control device for the elevator includes a braking piece 7 which is pressed against the brake drum 6 of the elevator to generate the braking force, a braking spring 9 for applying the braking operation to the braking piece 7, electromagnetic coils 11a, 11b to constitute electromagnets for releasing the braking by executing the attraction against the urging force of the braking spring 9, and a coil excitation power source 16 for controlling the current running in the electromagnetic coils 11a, 11b. The coil excitation power source 16 includes a current control power source 27 and a forced excitation power source 28. The electromagnetic coils 11a, 11b form one electromagnetic coil consisting of two coil parts of different winding direction, and one of the coil parts executes the excitation by the current control power source 16, and the other of the coil parts executes the excitation by the forced excitation power source 27 with the changing point of the winding direction being the same polarity. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
