中英文中英文文献翻译-MDL-50A型锚固钻机使用说明书 MDL-50A Drilling Rig Operation China is the worlds first national machinery development. Chinese mechanical engineering technology not only has a long history and splendid achievements in Chinese is not only the material culture and social economic development plays an important role in the world, and has made great contribution to promote the progress of technology civilization . Machine in the traditional，our country within a long period are leading in the word. In modern times, especially from the early 18th century, to the 19century40s, due to the economic and social and many other reasons, the machinery industry of Chinese was stagnation, but the 100 years is western bourgeois political revolution and industrial revolution time, mechanical science and technology is developing rapidly, and far more than the level of China. So, China mechanical development level and the western gap widens, to the 19th century middle， our country already behind western more than one hundred years. Over the past 40 years, roof bolter of China are developing from nothing, in some places roof bolter were also called anchor rig, the varieties from the original single to variety, from single power to multiple power. Our country successively has developed a mechanical support leg type electric roof bolter, drill roof bolter, supporting leg and the guide rail type hydraulic pressure roof bolter, supporting leg type pneumatic roof bolter, non-mechanical transmission support leg electric roof bolter, airborne roof bolter and double-stage Air-leg drill etc. According to the main power source, roof bolter has two kinds - Pneumatic and hydraulic. But electro-hydraulic combination will be the trend of its development. Over the past 40 years, roof bolter of China are developing from nothing, in some places roof bolter were also called anchor rig, the varieties from the original single to variety, from single power to multiple power. Our country successively has developed a mechanical support leg type electric roof bolter, drill roof bolter, supporting leg and the guide rail type hydraulic pressure roof bolter, supporting leg type pneumatic roof bolter, non-mechanical transmission support leg electric roof bolter, airborne roof bolter and double-stage Air-leg drill etc. According to the main power source, roof bolter has two kinds - Pneumatic and hydraulic. Hydraulic roof bolter is mainly component of the medium of hydraulic oil and the drive actuator witch is including cylinder and motor. Pointing from the walking in the domestic the hydraulic roof bolter mainly has two kinds skid and crawler. Structure of skid hydraulic Roof bolter is simple, but the strength is higher, operation is simple, manufacturing cost is relatively low. Such as Wuxi dual-fan production of YG-80, Chengdu Hamma production of YXZ-70, Chongqing prospecting plant production of MGJ-50 etc Holing main technology is double eccentric, commonly used in drill pipe is73, 89, according to different design of jacket tube drill pipe commonly use108, 127, 146 etc specifications. They need to be equipped with proper air compressor to driven impact power, because the bottom of impact always role in the hole, so often be called as construction process. But they are moving heavy, function single, and increased with the processing costs, much higher and higher buildings, this kind of type has been unable to meet the needs of the market. So anchor bolt drill and tracked automatically walking got quickly development. In the domestic there are many types of the crawler roof bolter, which features in the main power head adopts the high torque motor drive, speed range usually is variable speed. They are greatly improving the rig performance. The track is driven by a hydraulic motor, which made the drilling machine more flexibility and reduces the complex of the artificial joint. This type of drill also adopted the Xuanhua Ingersoll-Rand production of CM-351. This type of drill same with the slide drill on the pulling sleeve also need be equipped with auxiliary equipment and other auxiliary equipment. In China there is a kind of double anchor rig power head roof bolter, characteristic of this kind of drill rig is drill pipe and casing are driven rotation by each power head, and do not influence each other, pull casing can be done automatically by the machine. Every rig all have they own operation manual. The follow is MDL-50A Drilling Rig operation manual. 1. Preface The company has adopted its latest assembling technology for all main parts and components of this product. And the rig is completed with chassis for pretrial and pipe wrench and other accessories, which the re-designed fully new hydraulic system incorporates into one entity. Key elements are all renowned brands either local or imported, and are fully hydraulically controlled and displayed through instruments. The drilling rig is easy