Energy recovery type lifting hydraulic system for hoisting and conveying machine

摘要: The invention relates to an energy recovery type lifting hydraulic system for a hoisting and conveying machine. A reversing valve of the is three-position six-way valve, wherein oil inlet P communicated first P1 second P2 through three-way pipe; return port T outlet T1 T2 cylinder work A; direction control B; two-position electromagnetic or electro-hydraulic valve; safety are pump tank suction one-way b speed limiting c arranged on pump. According disclosed by invention, efficiency potential 65 75 percent.