【摘要】 <正> 集材—80型拖拉机,是以集材为主的四轮驱动80马力集材拖拉机,由松江拖拉机厂设计制造。该拖拉机的液压系统是多功能的,这在国内生产的集材拖拉机还属首次。其液压系统可实现全液压操纵折腰转向,液压控制排障器升降,搭载板起落和绞盘机卷筒更多还原

【Abstract】 Hydraulic system of Model Skid—80 Tractor is a multi-functional system. The authors analyze the constructure of the hydraulic circuit and character of the hydraulic system, advance several schemes for improving hydraulic circuit, and also set forth speed-loading char-acteristie equation for speed control of restriction of direction sliding spool value.更多还原