RECUPERATIVE HYDRAULIC DRIVE FOR TILLAGE APPARATUS Russian patent published in 2007 - IPC A01B63/10 A01B63/112 A01B63/111 

FIELD: agricultural engineering.

SUBSTANCE: recuperative hydraulic drive has hydraulic cylinder for suspension mechanism, drain hydraulic main and pressure hydraulic main, hydraulic accumulator, hydraulic distributor, pump, hydraulic tank, hydraulic cylinder of safety mechanism for working tools of tillage apparatus, hydraulic shock-absorbers for drive part, and spring-loaded pressure multiplier. Hydraulic cylinder for safety mechanism is connected through one back valve and adjustable throttle to pressure hydraulic main communicating with hydraulic accumulator and through other back valve to drain hydraulic main. Stem cavities of hydraulic accumulators are connected through one pair of back valves and cavities outside stems through throttle to pressure main and other pair of back valves to drain hydraulic main. Cavity of spring-loaded pressure multiplier is communicating at side adjoining larger-diameter piston with cavity outside stem of hydraulic cylinder of suspension mechanism, and cavity of spring-loaded pressure multiplier is communicating at side adjoining smaller-diameter piston through one back valve with pressure hydraulic main and through other back valve with drain hydraulic main.

EFFECT: reduced consumption of power and enhanced reliability in operation of tillage apparatus.

1 dwg