JPH03111688U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案の掘削装置の１実施例を示す要
部の一部切欠いた斜視図、第２図は同上底面図、
第３図は同上側面図、第４ａ図はローラービツト
の側面図、第４ｂ図は同上正面図、第４ｃ図は同
上底面図、第５ａ図は打撃式ハンマーの正面図、
第５ｂ図は同上底面図、第６ａ図はカツター式ビ
ツトの側面図、第６ｂ図は同上正面図、第６ｃ図
は同上底面図、第７図は地層の説明図である。 １……ケーシング本体、２……ケーシングヘツ
ド、３ａ，３ｂ……カツター式ビツト、４……打
撃式ハンマー、４ａ……本体部、４ｂ……打撃爪
、５ａ，５ｂ……ローラービツト、６……超硬チ
ツプ、７……スイベル管、８……回転ドラム、９
……台座、１０……切欠き。 Fig. 1 is a partially cutaway perspective view of the main part showing one embodiment of the excavation equipment of the present invention, Fig. 2 is a top and bottom view of the same,
Fig. 3 is a side view of the same as above, Fig. 4a is a side view of the roller bit, Fig. 4b is a front view of the above, Fig. 4c is a bottom view of the same as above, Fig. 5a is a front view of the impact type hammer;
Fig. 5b is a top bottom view of the same, Fig. 6a is a side view of the cutter type bit, Fig. 6b is a front view of the same, Fig. 6c is a top bottom view of the same, and Fig. 7 is an explanatory diagram of the strata. DESCRIPTION OF SYMBOLS 1... Casing body, 2... Casing head, 3a, 3b... Cutter type bit, 4... Hitting type hammer, 4a... Main body, 4b... Hitting claw, 5a, 5b... Roller bit, 6... ...Carbide tip, 7...Swivel tube, 8...Rotating drum, 9
...Pedestal, 10...Notch.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 回転掘削ケーシング下部の下端面に、カツター
式ビツトと打撃式ハンマーとローラービツトとを
配設したことを特徴とする掘削装置。 A drilling device characterized in that a cutter-type bit, an impact-type hammer, and a roller bit are arranged on the lower end surface of the lower part of a rotating excavation casing.