The embodiment of the invention provides a control method and device for a crane, a controller and the crane. The control method for the crane comprises the steps that the operation working condition of the crane is determined; under the condition that the operation working condition is the loading operation working condition, an oil outlet of a second variable pump and a second oil inlet are controlled to be in a communicating state, and the oil outlet of the second variable pump and an oil inlet of the unloading hydraulic drive mechanism are controlled to be in a cut-off state; and under the condition that the operation working condition is the lower vehicle hydraulic drive working condition, the oil outlet of the second variable pump and the oil inlet of the lower vehicle hydraulic drive mechanism are controlled to be in a communicating state, and the oil outlet of the second variable pump and the second oil inlet are controlled to be in a cut-off state. According to the embodiment of the invention, part of loading power can be transmitted to the unloading hydraulic drive mechanism and other mechanisms under the condition that the loading operation working condition power requirement is met, the power requirements of various combinations are met, the utilization rate of the loading pump is higher, and the space and the cost of the whole machine are saved.
本发明实施例提供一种用于起重机的控制方法及控制装置、控制器和起重机,用于起重机的控制方法包括:确定起重机的作业工况;在作业工况为上车作业工况的情况下,控制第二变量泵的出油口与第二进油口之间处于连通状态以及控制第二变量泵的出油口与下车液驱机构的进油口之间处于截止状态;以及在作业工况为下车液驱工况的情况下,控制第二变量泵的出油口与下车液驱机构的进油口之间处于连通状态以及控制第二变量泵的出油口与第二进油口之间处于截止状态。本发明实施例可以在满足上车作业工况动力需求的情况下,将部分上车动力传递至下车液驱机构和其他机构,满足多种组合的动力需求,使得上车泵的利用率更高,节省整机空间与成本。
Control method and control device for crane, controller and crane
用于起重机的控制方法及控制装置、控制器和起重机
2022-08-05
Patent
Elektronische Ressource
Chinesisch
IPC: | B66C Krane , CRANES |
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