Control method and control system for shovel blade of engineering machinery and engineering machinery

Abstract

The invention belongs to the technical field of engineering machinery, and particularly relates to a shovel blade control method and system of engineering machinery and the engineering machinery. The shovel blade control method of the engineering machinery comprises the following steps: receiving an automatic leveling instruction and initial parameter information; controlling a scraper knife of the engineering machinery to enter an automatic leveling operation state according to the automatic leveling instruction, and controlling the scraper knife to move by taking a first leveling posture corresponding to the initial parameter information as an initial reference posture; a first vertical load borne by the scraper knife in the moving process and the descending displacement amount of the scraper knife are obtained; determining a target reference posture of the scraper knife according to the first vertical load and the descending displacement of the scraper knife; and controlling the scraper knife to perform automatic leveling operation according to the target reference attitude. By means of the technical scheme, the shovel blade posture adjusting process is optimized, self-adaptive adjustment of the leveling datum can be achieved, accuracy is higher, the safety of the operation process is effectively improved, meanwhile, the labor intensity of operators is lowered, and the construction efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of construction machinery, and in particular relates to a blade control method for construction machinery, a control system and a construction machinery. Background technique [0002] In the field of construction machinery, machinery with a blade such as a motor grader needs to use the blade to level the ground during the construction process. However, due to the complex road conditions on the construction site, the attitude of the blade (such as height, inclination, etc.) needs to be adjusted accordingly. parameters), the traditional method requires the operator to adjust the posture of the blade according to visual observation and experience, which has low accuracy, and the operator has high labor intensity and poor work efficiency. [0003] Some machinery adopts an automatic control system, which controls the lifting and lowering of the blade by detecting obstacles and the status information of the blade,...

AI Technical Summary

Problems solved by technology

However, in the existing schemes, the parameters such as the height and position of obstacles, and the horizontal load of the blade are used as references to adjust the lifting of the blade. The selection of parameters is unreasonable, and it is limited to the process of mechanical travel, and is not suitable for setting the initial leveling reference. , and when encountering obstacles with large volume and high hardness such as stones, the vehicle body may be lifted off the ground and an overturning accident may occur, which poses a great safety hazard

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