论文部分内容阅读
气动凿岩机所用压气系统的工作介质是可压缩的,它对任何调节或控制的反应都很迟钝;压气系统的压力随距离及凿岩机的工作而变化,距离愈远、耗气量愈多,则有效气压愈降低。气动凿岩机的冲击能和扭矩受气压限制,所以,气压不稳定、冲击能小、不易调节,难以精确控制。与此相反,液压凿岩机以高压油做动力,采用压缩性很小的油液做工作介质,工作机构又都采用闭路循环系统,液压系统的流量和压力,可以进行精密的调节和准确的控制,作为原动机的液压泵安装在钻车上,
The working medium of the pneumatic system used in a pneumatic rock drill is compressible, and it is slow to respond to any regulation or control. The pressure of the pneumatic system varies with the distance and the work of the rock drill. The farther the distance, the more the air consumption, the effective pressure The more lower. Pneumatic rock drill impact energy and torque by the pressure limit, so the pressure instability, impact energy is small, difficult to adjust, it is difficult to accurately control. In contrast, the hydraulic rock drill to high-pressure oil to do power, the use of small compressibility of the oil as the working medium, the working organizations have adopted closed-loop system, hydraulic system flow and pressure, can be precisely adjusted and accurate control, The prime mover’s hydraulic pump is mounted on the rig,