TEST BENCH FOR SERVICEABILITY OF SECTIONAL HYDRAULIC DISTRIBUTOR OF HYDRAULIC SYSTEM OF WORKING EQUIPMENT OF AGRICULTURAL TRACTOR IN CONDITIONS OF IMITATION OF SOWING COMPLEX Russian patent published in 2024 - IPC F15B19/00 

FIELD: testing.

SUBSTANCE: invention relates to bench equipment for testing hydraulic distributors of agricultural machinery and can be used to check serviceability of sectional hydraulic distributors of hydraulic systems of working equipment of agricultural tractors in conditions of simulating operation of a sowing complex. Agricultural tractor working equipment hydraulic system sectional hydraulic distributor performance test bench in conditions of sowing complex operation simulation contains working fluid tank, a pump, a pressure gauge, a safety hydraulic valve, a drain pipeline, a drain filter installed in the tank at the end of the drain pipeline, and a control unit. Test bench is equipped with a hydraulic motor with a fan, equipped with an inductive contactless sensor of its rotation frequency, a hydrotester containing a high-precision turbine fluid flow sensor, a loading device, a pressure gauge and a working fluid temperature sensor, a tachometer, and a working fluid cooling device, wherein the hydraulic motor is connected by a pressure line to one of the tested hydraulic distributor working sections, by a drain line it is connected to the working fluid cooling device, and by the drain line it is connected to the tank, the pressure gauge is installed on the pressure line of the hydraulic motor, the working fluid cooling device is connected to the drain filter, the hydrotester is connected by the inlet and outlet lines to the other working section of the tested hydraulic distributor, tachometer is connected to the inductive contactless fan speed sensor, the tested hydraulic distributor is connected to the control unit, the tested hydraulic distributor is equipped with a drain line connecting it to the tank, and a drain line connecting it with a drain pipeline, the pump, the hydraulic safety valve and the hydraulic distributor being tested are connected by a pressure line, between the pump and the safety hydraulic valve there is a pressure gauge, the safety hydraulic valve is connected by a drain line with a drain filter, the pump is equipped with a drain line connecting it to the tank, drain line of the pump, drain line of the tested hydraulic distributor and drain line of the hydraulic motor are interconnected; the pump is a controlled axial-piston pump with an LS-control system.

EFFECT: improving accuracy of reproduction of operational loads at check of operability of sectional hydraulic distributor of hydraulic system of working equipment of agricultural tractor.

5 cl, 2 dwg