| 摘要 |
PROBLEM TO BE SOLVED: To provide a stabilizer for a drilling axis underpart of a multi-spindle auger that has quite a simple structure but can cope with an auger attacked with a stabilizer. SOLUTION: This invention relates to a stabilizer for a drilling axis underpart of a multi-spindle auger, comprising a main body part 42 consisting of a cylindrical main part 42A and an extended part 42B continuing to its right and left sides, a flange part 41 which reinforces the main body part 42, a fixed plate and a means for fitting to a leader. It is featured that the above cylindrical main body and either the right or the left extended part restricts both drilling axis and stabilizer from vibrating.
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