27-08-2020 дата публикации
Номер: US20200271170A1
An integrated driveline ( 136, 236, 336, 36, 436 ) slip clutch ( 154, 254, 354, 454 ) system for a large square baler ( 28 ) for controlling a transfer of power from a tractor ( 26 ) to the baler ( 28 ). The clutch ( 254 ) system includes a slip clutch ( 154, 254, 354, 454 ) having a number of clutch plates ( 388 ). The slip clutch ( 154, 254, 354, 454 ) is moveable between a disengaged relationship in which no power is transferred from a driveline ( 136, 236, 336, 36, 436 ) to a gearbox ( 140, 240, 340, 40, 440 ), and one or more engaged relationships in which amounts of power are transferred from the driveline ( 136, 236, 336, 36, 436 ) to the gearbox ( 140, 240, 340, 40, 440 ). Movement of the slip clutch ( 154, 254, 354, 454 ) between engagement relationships may be controlled mechanically (by, e.g., centrifugal force) or electronically. For electronic control, a controller receives input data from sensors ( 504 ) concerning operation of the baler ( 28 ), and controls a valve to introduce or remove hydraulic fluid to or from a clutch cylinder ( 276, 376, 476 ) or a double acting cylinder ( 496 ) in accordance with a pressure control profile which ramps hydraulic pressure through levels to achieve the engagement relationships.
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