EARTH-MOVING MACHINE WORKING MEMBER TEST STAND Russian patent published in 2004 - IPC

FIELD: testing facilities.

SUBSTANCE: proposed stand has frame structure with guides, pump, electric motor, loading device made in form of hydraulic cylinder, distributor to control operation of hydraulic cylinder and truck with working member, pipeline and containers for draining and taking in liquid. Stand is furnished with switch off device, pulse counter, pulse counter switch and commutator sensor with contactors installed on electric motor rotor and connected through electric circuit with pulse counter which is connected with pickups of beginning and end of counting of electric pulses installed on guides at borders of measured section of travel of loading device truck. To determine power parameters, stand is furnished with regulated throttle with passage section area setting dial which connects pressure main line of pump with drain part of stand pipeline. Electric pulse counter switch is interlocked with distributor control handle. Switch off device is arranged on truck with working member, being installed for interaction with pickups of beginning and end of counting of electric pulses.

EFFECT: improved accuracy of measurement of power parameters, simplified design.

3 dwg