摘要
按照螺纹件的形状特点及外观要求等状况,以新颖性和实用性为前提,分别介绍了与各种螺纹件对应的上卸扣装置的动力头的结构、工作原理和特点,以及动力系统的参数选择等。
With the view of providing novel and practical devices for manufacturing and overhauling plants, the author introduces a number of power-actuated make-up and break-out devices adapted for various threaded parts different in shape and structure. Each of the devices is described in detail, including the design feature, working principle, operating characteristic, and the technical parameters of the power system.
出处
《石油机械》
北大核心
1990年第6期40-47,7-8,共8页
China Petroleum Machinery