Working device, control method and engineering vehicle of an excavating machine

Abstract

The invention discloses a working device, a control method and an engineering vehicle of an excavating machine. The working device includes a connecting rod, a luffing oil cylinder, an arm oil cylinder, a boom, an arm oil cylinder and an arm. The tail end of the boom is hinged with the main frame; the middle part of the stick is hinged with the front end of the boom; the tail end of the stick cylinder is hinged with the middle part of the top surface of the boom; the tail end of the connecting rod is connected with the front end of the stick cylinder The front end of the connecting rod is hinged on the bucket rod; one end of the luffing cylinder is hinged with the connecting rod, and the other end is hinged with the front end of the top surface of the boom, and the connecting rod, stick cylinder, and luffing cylinder are in the form of "individual "Word connection; one end of the boom cylinder is hinged with the side of the boom, and the other end is hinged with the main frame. The invention greatly improves the digging force of the working device without changing the working pressure of the hydraulic system and the bore diameter of the oil cylinder, has a compact structure, and can adapt to different working conditions of mines.

Description

technical field [0001] The invention relates to an actuator of construction machinery, in particular to a working device of excavating machinery. Background technique [0002] During the construction process of construction machinery used in mining, construction and other industries, it is often necessary to excavate cracked rocks, break frozen soil, and dig asphalt roads. The actuator used by the excavator to complete the excavation and loading actions is called the working device. It is generally composed of a boom, a stick, a bucket (or other equipment), a boom cylinder, a stick cylinder, and a bucket cylinder. Hinged joints are used to achieve a wide range of operations. [0003] At present, in order to meet the requirements of excavation force, the equipment is often equipped with oil cylinders with larger bores. Due to the harsh working conditions, the vibration and impact directly act on the oil cylinders. After the excavator works for a long time, there will be prob...

AI Technical Summary

Problems solved by technology

[0003] At present, in order to meet the requirements of digging force, the equipment is often equipped with a cylinder with a larger bore. Due to the harsh working conditions, the vibration and impact directly act on the cylinder. After the excavator works for a long time, there will be problems such as large internal leakage of the cylinder and a significant drop in digging force.

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