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GJ972223 打桩机 SU 1780349[专,俄]/—1995.11.10.—(1989.5.3);Int.Cl.E 02D 7/10该打桩机包括导架、锤头、桩帽以及与它们刚性连接的动力缸、回位阶状活塞和气体蓄能器、液压泵、分配阀,动力缸与阶状活塞之间通过溢流阀使进油腔与低压腔相连通,低压腔与溢流回路连通。为了提高打桩机的效率,在液压泵与分配阀之间安装了辅助蓄能器,通过蓄能器与溢流阀的控制腔相连通,又通过单向阀与液压泵相连,液压泵直接接到动力缸的
GJ972223 Pile driver SU 1780349 [Russian, Russian]/—1995.11.10.—(1989.5.3); Int.Cl.E 02D 7/10 The pile driver includes guides, hammers, pile caps and rigid connections to them. The power cylinder, the return step piston and the gas accumulator, the hydraulic pump, the distribution valve, the power cylinder and the step piston communicate the oil inlet chamber with the low pressure chamber through the relief valve, and the low pressure chamber communicates with the overflow circuit. In order to improve the efficiency of the pile driver, an auxiliary accumulator is installed between the hydraulic pump and the distribution valve. The accumulator is connected with the control chamber of the relief valve, and the check valve is connected with the hydraulic pump. The hydraulic pump is directly connected. To the cylinder