JPH0372993U

JPH0372993U -

Info

Publication number: JPH0372993U
Application number: JP13521789U
Authority: JP
Priority date: 1989-11-21
Filing date: 1989-11-21
Publication date: 1991-07-23

Description

[Brief explanation of drawings]

図面は、この考案による二重管式穿孔機のクリ
ーニングアダプタの実施例を示すもので、第１図
は上半部を破断して示す側面図、第２図は分解斜
視図である。なお第３図はクリーニングアダプタ
を装備した二重管式穿孔機の概略構成図、第４図
は穿孔工具部と従来のクリーニングアダプタとを
分解した状態で示す斜視図、第５図は同じく従来
のクリーニングアダプタ取合部の上半部を破断し
て示す側面図である。１０１……ウオータスイベル、１１０……アダ
プタケーシング、１２０……アダプタロツド、１
３０，５０……シヤンクロツド、１４０，１２ａ
……インナーロツド、１５０，２３ａ……ケーシ
ングカツプリング。 The drawings show an embodiment of the cleaning adapter for a double-pipe drilling machine according to the invention, with FIG. 1 being a side view with the upper half cut away, and FIG. 2 being an exploded perspective view. Fig. 3 is a schematic configuration diagram of a double-pipe drilling machine equipped with a cleaning adapter, Fig. 4 is an exploded perspective view of the drilling tool section and a conventional cleaning adapter, and Fig. 5 is a diagram of a conventional cleaning adapter. FIG. 3 is a side view showing a cutaway upper half of the cleaning adapter connection part. 101... Water swivel, 110... Adapter casing, 120... Adapter rod, 1
30, 50...Shankrod, 140, 12a
...Inner rod, 150, 23a...Casing coupling.

Claims

[Scope of Claim for Utility Model Registration] A double-pipe drilling machine in which a cleaning adapter consisting of three main parts: a water swivel, an adapter casing, and an adapter rod is interposed between a drilling tool part and a power part, The swivel consists of a cylindrical body having a pressure water supply nozzle and a drainage nozzle, and the adapter casing has a casing coupling ring for connecting the drilling tool part on an inner peripheral surface and a female thread part for connecting the adapter rod. The adapter rod is a cylindrical body having water holes on its outer peripheral surface that communicate with the water supply nozzle and the drainage nozzle of the water swivel, respectively, and is installed in the water swivel via a water sealing means, and the adapter rod is connected to the adapter casing. It has a male threaded part that is screwed into the female threaded part on the inner circumferential surface of the drill bit, and has a cylindrical part with a reduced diameter at its front end, and the inner rod of the drilling tool part is connected to the inner circumferential surface of the cylindrical part. The inner circumferential surface of the rear end has a female threaded section for connecting the shunt rod to the power section, and the outer circumference communicates with the pressurized water passage hole of the adapter casing. A double-pipe drilling machine equipped with a cleaning adapter characterized by having water holes.