论文部分内容阅读
一、综采设备技术经济合理化的迫切性我国从70年代初开始大力发展液压支架,在液压元部件和架型研究方面积累了一定的经验。1974年和1979年我国两次引进的综采设备237套,使近几年来我国液压支架研制工作有了较大的发展,国产液压元部件使用性能日益可靠,具有一定先进性。在液压支架架型研究方面,部分架型系列方面基本赶上国际70年代后期的先进水平,形成QY和ZY(掩护和支撑掩护式)系列,但过去探讨得不够的一个重要问题是:综采设备的技术经济合理性问题。
First, the urgency of technical and economic rationalization of fully mechanized mining equipment Since the early 1970s, China has made great efforts to develop hydraulic support, and accumulated some experience in hydraulic component and frame research. In 1974 and 1979, China imported 237 sets of fully mechanized mining equipment twice, which made the development of hydraulic support in our country develop greatly in recent years. The performance of domestic hydraulic components is more and more reliable and has some advanced features. In the field of hydraulic support frame research, some of the frame series basically catch up with the international advanced level in the late 1970s to form a series of QY and ZY (cover and support cover) series. However, an important issue that has not been explored sufficiently in the past is that: fully mechanized mining Equipment technical and economic rationality.