TEST BENCH FOR DIGGING-TRANSPORTING MACHINES OF BUCKET TYPE Russian patent published in 2011 - IPC E02F3/28 E02F9/22 

FIELD: machine building.

SUBSTANCE: test bench for digging-transporting machines of bucket type consists of full-size digging-transport machine of bucket type with hydraulic drive, of loading system, of position sensors and of computer. Each cavity of the hydraulic cylinder of hydraulic drive of working equipment is equipped with the hydraulic system of loading. It includes a regulated throttle with proportional electric control - a back valve and a pressure gauge. The back valve is parallel connected to the regulated throttle with proportional electric control. An inlet cavity of the back valve on a side of the seat is connected to one outlet of a distributor of fluid of hydraulic drive of digging-transporting machine by means of one pipeline; while an outlet cavity of the back valve is connected to the cavity of the hydraulic cylinder of the hydraulic drive of the digging-transporting machine by means of another pipeline. The pressure gauge is connected to the same cavity. The output of the gauge is connected with an inlet of the computer, while an electric input of the control unit of the regulated throttle with proportional electric control is connected with an output of the computer.

EFFECT: simplified design of bench, reduced expenditures for its fabrication and raised reliability of tests.

2 dwg