A AUTO-CONTROL CIRCUIT FOR EXCAVATOR

摘要

The apparatus memorizes a sequence of specific work processes in the hydraulic excavator, and automatically repeats the work processes without any additional operation when selecting the memorized process if necessary. It comprises a hydraulic pumping means(4) including at least one variable hydraulic pump; a multiple of actuators(6-11) driven by the discharge flow of the pumps; a multiple of sensors(12-17) detecting operation states of the actuators(6-11); an electronic proportional valve(18) generating a pilot pressure for driving the spool of multi-control valve end(5); an operation means(2) converting the operation amount into electronic signal; a function selection switch(20); a switch(21) generating the signals for starting or finishing a work; a monitoring means(23); and input keys(24) for inputting the titles of learning works.