一、前言 近几年来,以液压式凿岩机代替风动式凿岩机,骤然受到了国内外各煤矿的注目。 这是由于液压式凿岩机比风动式凿岩机具有效率高、钻孔速度快、噪音低、振动小、可靠性高及容易实现自动化等方面的突出优点。 本文所介绍的VALCAN型液压凿岩机是一种为满足矿山的要求而经过多年反复研制的轻型旋转冲击液压式带腿凿岩机。 I. Introduction In recent years, hydraulic rock drill instead of wind-driven rock drill, suddenly attracted the attention of all coal mines at home and abroad. This is due to the prominent advantages of hydraulic rock drills over pneumatic rock drills that are more efficient, drilled faster, less noisy, less vibrating, more reliable and easier to automate. The VALCAN hydraulic rock drill introduced in this article is a light rotary impact hydraulic rock drill with legs developed for many years to meet the demands of the mine.