PROBLEM TO BE SOLVED: To provide a railroad-crossing barrier in which when elevation motion of an intercepting bar is stopped, the intercepting bar is not oscillated.SOLUTION: During a motor power source is supplied and a cam switch CS is not detected, a motor drive control part 10 controls drive of a motor 3 according to a control input, thereby rising or lowering an intercepting bar. Further, the motor drive control part gradually reduces a rotational speed of the motor 3 and stops the motor according to detection of the cam switch CS. On the other hand, supply of the motor power source is stopped when the cam switch CS is detected and the motor 3 is not driven (falling of a relay CR3). Consequently, even if the intercepting bar reaches a reference position and this is detected by the cam switch CS, supply of the motor power source is not immediately stopped, a rotational speed of the motor 3 is gradually reduced and the motor can be stopped.
【課題】しゃ断棹の昇降動作の停止時にしゃ断棹が振動しない踏切しゃ断機を提供する。【解決手段】モータ電源が供給され、且つ、カムスイッチCSが非検出の間、モータ駆動制御部10は、制御入力に従ってモータ3を駆動制御してしゃ断棹を上昇動作或いは下降動作させる。そして、カムスイッチCSの検出に応じて、モータ3の回転速度を徐々に減速して停止させる。一方、モータ電源の供給は、カムスイッチCSが検出、且つ、モータ3が駆動されていない(リレーCR3の落下)場合に停止される。このため、しゃ断棹が基準位置に到達してカムスイッチCSが検出した場合であっても、直ぐにモータ電源の供給が停止されず、モータ3の回転速度を徐々に減速して停止させることができる。【選択図】図1
RAILROAD-CROSSING BARRIER
踏切しゃ断機
2015-06-04
Patent
Electronic Resource
Japanese
IPC: | B61L Leiten des Eisenbahnverkehrs , GUIDING RAILWAY TRAFFIC |
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