Control system and control method for auger stem machine tool of hydraulic excavator

Abstract

The control system comprises a rotary table, a movable arm oil cylinder, a movable arm, a bucket rod oil cylinder, a bucket rod, a bucket oil cylinder, a spiral drill rod connecting mechanism and a spiral drill rod, and further comprises a controller, an instrument, a pressure sensor, a tilt angle sensor, an electromagnetic valve and a switch. The controller is electrically connected with the instrument, the pressure sensor, the tilt angle sensor, the electromagnetic valve and the switch. The electromagnetic valve is used for controlling the bucket rod linkage valve element to achieve inward retracting and outward swinging of the bucket rod. The tilt angle sensor is mounted on the movable arm and the bucket rod and used for identifying postures of the movable arm and the bucket rod; the switches comprise the first switch and the second switch, the first switch is used for triggering and recognizing the position of the spiral drill rod and triggering and recognizing the horizontal and vertical distance between a connecting shaft between the spiral drill rod and the bucket rod and a connecting shaft between the movable arm and the rotary table, and the second switch is used for triggering and starting the automatic control function of a spiral drill rod machine tool. According to the invention, inclination of a drilling pit is effectively avoided, perpendicularity of the drilling pit is ensured, operation difficulty is greatly reduced, and working efficiency is improved.

Description

technical field [0001] The invention relates to a control system and a control method of auger rod implements of a hydraulic excavator, belonging to the field of excavators. Background technique [0002] As an important construction machine, excavators are widely used in various earthwork operations. For micro excavators, auger rods are often used to drill holes for tree planting and bury utility poles. At present, the operation of rotary drilling rod equipment is firstly positioned at the position of the drilling pit, and by operating the pilot handle and foot valve, the movement of the boom, stick, and tool cylinder is realized to make the rotary drilling rod rotate, so the boom, bucket Coordinated operation of the rods to ensure that the auger rod moves as vertically as possible, which requires high operator skills, which may easily cause the drilling hole to tilt, and the verticality cannot be guaranteed. In addition, the depth of the drilling hole can only be identified...

AI Technical Summary

Problems solved by technology

At present, the operation of rotary drilling rod equipment is firstly positioned at the position of the drilling pit, and by operating the pilot handle and foot valve, the movement of the boom, stick, and tool cylinder is realized to make the rotary drilling rod rotate, so the boom, bucket Coordinated operation of the rods to ensure the vertical movement of the auger rod as much as possible, which requires high operator skills, which may easily cause the drilling pit to tilt, and the verticality cannot be guaranteed. In addition, the depth of the drilling pit can only be identified visually, but cannot be accurately identified

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