Note the use of rotary drilling rig 1, after starting the engine, should low speed for 3-5 minutes and turn the power head under load, in order to facilitate the hydraulic system is working properly. 2, the rig during operation, the operator should regularly observe a variety of instrument instruction is normal, if unusual circumstances should be stopped and checked. 3, the operation should pay special attention to the operation control lever should be in place in order to avoid pressure shocks to the system. 4, in the course of the tightening pressure should be checked vibration fittings and pump tightening bolts to ensure that no oil spills, leakage phenomenon. 5, the rig must be commanded by a person when walking, with particular attention to the dangerous location power lines, puddles, etc. 6, within the scope of the rig swivel strictly prohibited. 7, the rig after the transfer process, must stretch crawler flatbed immediately after the next car. 8. Check the hydraulic oil rig, hydraulic oil cooling must wait before proceeding. 9, when the drill pipe welding parts, must turn off the power switch. 10, regular inspection of reverse circulation drilling rig swivel joint general circulation drill rig can be composed with positive, reverse circulation drilling rig drilling mode, the main components are the same, reverse circulation and positive cycle except that: mud circulation system: no need mud pump, but you want to configure the debris pump (suction pump) with a vacuum pump, or an air suction machine configuration (also known as gas lift method), or hydraulic suction machine (also known as water jet method). But most use a vacuum pump, debris pump (suction pump) with gas lift achieve reverse circulation drilling. Rig: mostly the same as the regular cycle; just airlift drilling of drill pipe (inner diameter greater than 127mm) on to a separate duct (mostly with external supply air duct). Cone Drill: 1. Three-wing single-pointed hollow cone drill rig Tai'an, for clayey soil, silty soil and the sand layer; for mud pump (suction) of reverse circulation. 2. Cone bit: in the sand and gravel and weathered rock better, in sandy soil, clay soil, gravel layer can also be used; for mud pump (suction) of reverse circulation. 3. Closed cylindrical cone drill: suitable for airlift (air suction lift style) reverse circulation; for clayey soil, silty soil and in the coarse sand layer. 4. Wedge hob drill: suitable for medium and hard rock, such as sandstone, limestone, egg boulder formations, rock strength is greater than 30Mpa other may be used. 5. Ball hob drill: socketed Pile drill bit. Rock strength greater than 60MPa may be used. Slope rigs, drilling rigs, dragon industry machinery supplied by Shandong Machinery Co., Ltd. Dragon. Machinery Co., Ltd. Shandong Long (www.longyejixie.com) strong, credible, in Tai'an, Shandong Engineering Machinery Parts industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead industry machinery and you work long into the brilliant, for a better future!