WORKING MACHINE WITH HYDRAULICS FOR ENERGY RECUPERATION Russian patent published in 2022 - IPC E02F9/22 F15B11/17 F15B21/14 

FIELD: working machines.

SUBSTANCE: invention can be used in working machines with at least one hydraulic actuator for actuation of working equipment. The working machine has at least one hydraulic actuator (80) for actuation of working equipment, hydraulic consumers (100), (110), two displacement nodes (20), (30) driven by drive unit (10) of the working machine, and control unit (90). First displacement node (20) powers control unit (90) with a hydraulic medium from a hydraulic tank. Second displacement node (30), in a working mode, powers control unit (90) with the hydraulic medium from the hydraulic tank, and, during a recuperation mode, is driven by a hydraulic volume displaced by specified at least one hydraulic actuator (80) or hydraulic consumer (100), (110) to power kinetic energy back to drive unit (10). Control unit (90) connects pressure pipelines of first and second displacement unit (20, 30) to hydraulic actuator (80) and consumers (100), (110). There is first running valve (40) with at least two switching positions, of which the first switching position opens passage from second displacement node (30) to control unit (90), and the second switching position interrupts a volume flow between second displacement node (30) and control unit (90). There is second running valve (50) with at least two switching positions, using which the possibility of opening or locking a direct connection between hydraulic actuator (80) and second displacement node (30) is provided, in particular the volume flow from actuator (80) to second displacement node (30).

EFFECT: simplification of a structure.

10 cl, 6 dwg