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Electric rotation locking apparatus
Provided is an electric rotation locking apparatus, which is capable of removing foreign matters that accumulate on a power supplying limit relay. The power supplying limit relay is arranged closer to an upstream side than a motor driving control part on a motor power supplying path of the motor driving control part. A conduction detection part for detecting the conduction state of the power supplying limit relay is arranged between the power supplying limit relay and the motor driving control part. Under a state that an unlocking control relay and a locking control relay are connected to a grounding side, the power supplying limit relay is switched to be in a conduction state. If the conduction detection part does not detect the conduction state of the power supplying limit relay, a microcomputer performs relay switching control. During the relay switching control, the power supplying limit relay is switched to be in a cut-off state, and the power supplying limit relay is switched to be in a conduction state when the contact state of any of the unlocking control relay and the locking control relay is switched.
Electric rotation locking apparatus
Provided is an electric rotation locking apparatus, which is capable of removing foreign matters that accumulate on a power supplying limit relay. The power supplying limit relay is arranged closer to an upstream side than a motor driving control part on a motor power supplying path of the motor driving control part. A conduction detection part for detecting the conduction state of the power supplying limit relay is arranged between the power supplying limit relay and the motor driving control part. Under a state that an unlocking control relay and a locking control relay are connected to a grounding side, the power supplying limit relay is switched to be in a conduction state. If the conduction detection part does not detect the conduction state of the power supplying limit relay, a microcomputer performs relay switching control. During the relay switching control, the power supplying limit relay is switched to be in a cut-off state, and the power supplying limit relay is switched to be in a conduction state when the contact state of any of the unlocking control relay and the locking control relay is switched.
Electric rotation locking apparatus
YAEGASHI YUZURU (author) / NAKANISHI MASAYUKI (author)
2015-06-03
Patent
Electronic Resource
English
APPARATUS SYSTEM OF PROTECTING A ROTATION SHOCK AND LOCKING ROTATION FOR ROTATION BRIDGE
| European Patent Office | 2021