Hydraulic control system for a scraper

Details Hydraulic control system for a scraper Hydraulic control system for a scraper

B - Operations, Transporting

60

P

214/55

B60P 1/42 (2006.01) E02F 3/64 (2006.01) E02F 3/65 (2006.01)

Patent

CA 1040145

AUGER CONTROL SYSTEM FOR A SCRAPER A B S T R A C T A control system for the hydraulically powered auger of a self-loading auger scraper that has a hydraulic cushion hitch which is locked out when the scraper is loading. A multi-position manually controlled pilot selector valve which is used to lock out the cushion hitch also initiates operation of the auger. The control system includes a pilot operated, normally open auger control valve through which flow of a signal line for a normally open unloading relief valve goes to drain. Moving the pilot selector valve from a first to a second position pressurizes the pilot line to close the auger control valve and thus isolate the signal line from drain, closing the unloading relief valve to isolate a pump for the auger motor from drain and cause it to power the motor.

256733

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