Coal exploring drilling rod

• Main Authors: ZHANG XUEXIANG, XU HUIYONG, LIU DEJUN, JI MINGCHANG
• Format: Patent
• Language: English
• Published: 08.07.2015
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

The utility model discloses a coal exploring drilling rod. The coal exploring drilling rod comprises a rod body, and the periphery of the rod body is uniformly wound with a spiral track. The coal exploring drilling rod is characterized in that a locating clamping opening a is arranged inside the front section of the rod body; the tail section of an external connection square head is installed in the locating clamping opening a and connected with the rod body through the locating clamping opening a; a limiting protrusion is arranged on the upper end face of the front end of the external connection square head, a pressure hole is formed below the limiting protrusion, a pressure spring is arranged in the pressure hole, and the limiting protrusion is installed on the pressure spring; a locating clamping opening b is arranged inside the tail section of the rod body; a limiting groove is formed in the upper end face of the locating clamping opening b, and the locating groove is obliquely arranged. Preferably, the spacing of the spiral track is 25 cm-115 cm. The coal exploring drilling rod has the advantages that the coal exploring drilling rod adopts inner square and outer square matched location, the locating effect is good, the rod body is stable in the use process, the pulverized coal discharging effect is good, the drilling efficiency is high, the occurrence of the phenomena of wedging and jamming of the drilling rod is reduced, the service life of the drilling rod is prolonged, and the work efficiency is improved.