High-pressure shear system for refitting automatic supercharged excavator

The invention relates to a high-pressure shear system for refitting an automatic booster excavator, which is characterized in that a standby piece control handle of the excavator is utilized to realize the action of cutting off a long-strip-shaped object, and when the cut-off object is clamped, the pressure of a main pump of the excavator is increased from 30MPa to double pressure of 60MPa through a booster; the shearing oil cylinder provides the same shearing force on the premise that the cylinder diameter area of the shearing oil cylinder is reduced by one time, and has the advantages that the overall size and weight are reduced, the cost is reduced, installation is convenient, and the shearing closing speed during empty shearing is increased. 本发明涉及一种自动增压式挖机改装高压剪系统，利用一个挖掘机自带的备用片控制手柄实现截断长条状物体动作，在夹住被截断物体时将挖掘机主泵压力30MPa通过增压器提升到两倍压力60MPa，在缩小剪切油缸缸径面积一倍的前提下提供相同的剪切力，优点是减小整体体积和重量，降低成本，方便安装，提高空剪时合剪速度。