HYDRAULIC SYSTEM FOR EMERGENCY PROTECTION OF MULTI-TOWER SPRINKLING MACHINE Russian patent published in 2007 - IPC A01G25/16 

FIELD: agricultural engineering, in particular, system for automatic protection and controlling of self-propelled multi-tower sprinkling machines.

SUBSTANCE: hydraulic system has locking device equipped with hydraulic drive and positioned at entrance end of machine, controllable hydraulic relay connected to control pipe extending through each tower and connected to hydraulic relay control unit and through narrowing device to pressure pipeline, return valve, normally open locking valves and actuating devices with tower position sensors disposed on rods which are fixed on housing bars of synchronization mechanism for intermediate supporting carts, hydraulically controlled valve mounted in feeding line of hydraulic drive for terminating cart and hydraulically communicated with control pipe. Actuating devices are connected through inlet pipe unions with control pipe via normally open locking valve by means of T-pipe, and through outlet pipe union with atmosphere. Tower position sensors are formed from plates made of fluorinated plastic material and equipped with slot widening at its ends. Plates are fixed on rods of synchronization mechanism by means of bolt connection so that said plates are movable axially of rod. Silicone pipe positioned within slot is joined with inlet and outlet pipe unions rigidly fixed within housing of synchronization mechanism for intermediate towers. Hydraulic communication between narrowing device and pressure pipeline is provided through return valve.

EFFECT: simplified construction and enhanced reliability in operation.

4 dwg