The invention relates to the technical field of engineering machinery, and provides an action control system of a cylinder arm pin, a single-cylinder bolt type telescopic arm and a crane, the action control system of the cylinder arm pin comprises a cylinder pin driving part, an arm pin driving part, a power source and a first control valve; the power source comprises a first energy accumulator, a power pump and a driving element, and the inlet end of the power pump is connected with the first energy accumulator; the first control valve is provided with an oil inlet connected with the outlet end of the power pump, an oil return opening connected with the first energy accumulator, a first working oil opening connected with the arm pin driving piece and a second working oil opening connected with the cylinder pin driving piece. By switching the state of the first control valve, the communication relation among the oil inlet, the oil return port, the first working oil port and the second working oil port can be switched. By means of the arrangement, the problem that in the prior art, an oil pump easily sucks air during pitching adjustment of a single-cylinder bolt type telescopic arm is solved.
本发明涉及工程机械技术领域,提供一种缸臂销的动作控制系统、单缸插销式伸缩臂及起重机,其中,缸臂销的动作控制系统包括缸销驱动件、臂销驱动件、动力源和第一控制阀;动力源包括第一蓄能器、动力泵和驱动元件,动力泵的进口端与第一蓄能器连接;第一控制阀具有与动力泵的出口端连接的进油口、与第一蓄能器连接的回油口、与臂销驱动件连接的第一工作油口和与缸销驱动件连接的第二工作油口。通过切换第一控制阀的状态,可以切换进油口、回油口、第一工作油口和第二工作油口之间的连通关系。如此设置,解决了现有技术中的单缸插销式伸缩臂在俯仰调节时容易出现油泵吸空的问题。
Action control system of cylinder arm pin, single-cylinder bolt type telescopic arm and crane
缸臂销的动作控制系统、单缸插销式伸缩臂及起重机
2023-05-12
Patent
Elektronische Ressource
Chinesisch
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