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自1960年以来,发表了很多用于破碎大块和掘进巷道的大型碎石器专利。然而,以压气作工作介质不可能使冲击功增大到开采和破碎各种矿物所需的破碎能量。在采用液压驱动后,该领域才开始了新的发展。 60年代末,克虏伯公司和蒙塔贝特公司推出了几种液压碎石器,安装在液压铲臂架上,用于破碎混凝土、砖体和类似构筑物。以后对这种高效设备进行了各种现场试验,逐渐扩大其使用范围,现已有效地应用于公路施工、拆毁建筑物、采石场破碎大块、开沟和地下工程,也用于冶金、采矿、巷道掘进和扩帮撬顶以及水下工程。目前,除提高已有碎石器的效率和工作可靠性及加大单位功率的重量外,随着设计原理的完善,已研制成功越来越重的碎石器,并已将其用于生
Since 1960, a number of large gravel patents have been published for the crushing of large blocks and roadways. However, it is impossible to increase impact energy to the crushing energy needed to mine and crush various minerals by using compressed gas as a working medium. After the introduction of hydraulics, the field started a new development. In the late 1960s, Krupp and Montact introduced a number of hydraulic stone crushers mounted on hydraulic shovel booms to crush concrete, brickwork and similar structures. After this kind of efficient equipment for a variety of field trials, and gradually expand its scope of use, has now been effectively applied to highway construction, demolition of buildings, quarry broken large blocks, ditching and underground engineering, but also for metallurgy, Mining, roadway excavation and expansion to help the top and underwater engineering. At present, in addition to improving the efficiency and reliability of existing lithotripters and increasing the unit power, with the improvement of design principles, more and more gravel devices have been developed successfully and have been used for students