Hydraulic control system and control method for quick change of operation machinery and accessories: Fid-Bau Portal

Hydraulic control system and control method for quick change of operation machinery and accessories

YANG CHEN

The invention relates to the technical field of engineering machinery, in particular to a hydraulic control system and method for quick change of operation machinery and accessories. The control method of the accessory quick-change hydraulic control system comprises the steps that after a first instruction is obtained, the quick-change stop valve is powered on to establish system oil pressure, the quick-change pressure reducing valve is powered on to adjust the working pressure of the accessory quick-change hydraulic control system, and the quick-change reversing valve is powered on to adjust the oil way direction so that the clamp can loosen the accessory; after a second instruction is obtained, the quick change reversing valve is powered off, and the oil way direction is reset to enable the clamp to clamp the accessory; and after preset time, the quick-change stop valve and the quick-change pressure reducing valve are powered off. According to the control method of the accessory quick-change hydraulic control system, the quick-change reversing valve, the quick-change stop valve and the quick-change pressure reducing valve are arranged on the accessory quick-change hydraulic control system, automatic replacement of the accessory can be achieved, and after the second instruction is obtained and then the preset time is passed, the quick-change stop valve and the quick-change pressure reducing valve are powered off, so that the accessory is automatically replaced. In this way, the accessory clamping and locking function can be achieved.

本发明涉及工程机械技术领域，尤其涉及一种作业机械、属具快换液压控制系统及控制方法。属具快换液压控制系统的控制方法包括获取第一指令后，快换切断阀得电以建立系统油压，快换减压阀得电以调整属具快换液压控制系统的工作压力，快换换向阀得电以调整油路方向使夹具松开属具；获取第二指令后，快换换向阀失电，油路方向复位使夹具夹紧属具；经预设时间后，快换切断阀和快换减压阀均失电。根据本发明的属具快换液压控制系统的控制方法，通过在属具快换液压控制系统上设置快换换向阀、快换切断阀和快换减压阀，可以实现属具的自动更换，而且在获取第二指令后，然后再经过预设时间后，快换切断阀和快换减压阀失电，这样可实现属具夹紧锁定功能。

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