Reversible plough with double-acting cylinder - with oil-pipes alternately connected to pressure-oil pump or tractor sump via control valve

摘要

The front carriage of the plough has two attachments for the two positions of the reversible plough. A double attachment on the chassis alternatively rests against the adjustable attachments. The cylinder has two oil pipes serving alternately for the input and discharge of the oil. In one pipe is a valve combination consisting of two parallel valves - one a relief valve and the other a return valve. The two valves can either be made as one integral unit or alternatively they can consist of separate units which are placed at different positions along the conduit.