| 摘要 |
A drilling member of a crawler drill bit is provided to improve workability by easily replacing an abraded drilling member with an optimal drilling member according to working field conditions. A drilling member of a crawler drill bit comprises super-hard protrusion(31) at the end portion thereof and a coupling section(34) having a spiral coupling structure therein. The coupling section(34) is detachably coupled to a guide adapter section(33) having an adapter coupling section(35) with a spiral protruding structure. The guide adapter section(33) includes a rod coupling section(36) having a spiral receptacle structure coupled to a rod. The drilling member is fixedly coupled to the guide adapter section(33) during a drilling work and easily detachable from the guide adapter section(33) during a replacement work.
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