Oil way control device and sweeper

The utility model provides an oil way control device and a sweeper. A plurality of oil ways are formed in a valve block, a first overflow oil way, a first oil inlet oil way and a second oil return oilway are communicated, and a second overflow oil way and a second oil inlet oil way are communicated;...

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1. Verfasser: WANG SHAOCUI
Format: Patent
Sprache:chi ; eng
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