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Subject: shield toes catch on the spill tray mining. Описывается функция автоматического подтягивания секций крепи при работе на концевых участках забоя. Интересующее место находится всамом конце приводимого ниже фрагмента.Auto Drag
This facility is used when the RS20s SCC (пульт) detects a shield (секция) that is not advanced (передвижка) in front of a Conveyor Push Prime (задание на передвижку конвейера) . If a shield is back when the Push Prime is initiated components on the ram (гидродомкрат) would either break or shear. The Auto Drag facility allows a lowered shield that is not advanced to be dragged to the same level if both neighbours start pushing. И далее:
Once the RS20s SCC has confirmed that the not advanced shield is registering not set (секция регистрирует отсутствие распора) it will initiate the Push Prime up to the adjacent shield as shown in the diagram above.
The Push Prime (задание на передвижку конвейера) passes through the not set shield and the lower solenoid is energised for a further adjustable period, refer to Lower During Drag Time Parameter in Auto Drag/Push Parameters in the RS20s SCC Manual. This can be useful if the shield toes catch on the spill tray. shield toes catch on the spill tray - ?
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