JPH05263577A - Roof bolt - Google Patents
Roof boltInfo
- Publication number
- JPH05263577A JPH05263577A JP6031592A JP6031592A JPH05263577A JP H05263577 A JPH05263577 A JP H05263577A JP 6031592 A JP6031592 A JP 6031592A JP 6031592 A JP6031592 A JP 6031592A JP H05263577 A JPH05263577 A JP H05263577A
- Authority
- JP
- Japan
- Prior art keywords
- drifter
- roof bolt
- screws
- male screw
- coupling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Earth Drilling (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、山岳や道路の斜面崩壊
を防止するための工事において、前記斜面に打ち込まれ
るルーフボルトに係り、特に接続して使用するものに関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roof bolt driven into a slope in a construction for preventing slope collapse of a mountain or a road, and more particularly to a roof bolt connected to the slope.
【０００２】[0002]
【従来の技術】従来、ルーフボルトを打設する時は、ボ
ルト端部にドリフタにより打撃と回転を与えて地面に穿
孔を施すので、ガイドセルがルーフボルトより長くなけ
ればならず、機械が大型化する傾向にあった。2. Description of the Related Art Conventionally, when driving a roof bolt, since the end of the bolt is hit and rotated by a drifter to pierce the ground, the guide cell must be longer than the roof bolt, and the size of the machine is large. Tended to change.
【０００３】そこで、近年、図４及び図５に示すよう
に、中空のルーフボルト２０の外周全長に雄ねじ２１を
形成し、そのルーフボルト２０の中間部を中空貫通型ド
リフタ２２の前記雄ねじ２１と螺合する把持部により把
持し、該ドリフタ２２により打撃と前記雄ねじ２１と反
対方向の回転を与えて地面に穿孔を施すという新しい方
法が考えられた。Therefore, in recent years, as shown in FIGS. 4 and 5, a male screw 21 is formed on the entire length of the outer circumference of a hollow roof bolt 20, and the middle portion of the roof bolt 20 is connected to the male screw 21 of the hollow through type drifter 22. A new method has been conceived in which a gripping portion that is screwed together is used to punch the ground by hitting and rotating in the opposite direction of the male screw 21 by the drifter 22.
【０００４】この際、中空貫通型ドリフタ２２がルーフ
ボルト２０に対しその雄ねじ２１と反対方向の回転を与
えるのは、岩盤が硬く、把持部が滑った場合でも、ルー
フボルト２０は雄ねじ２１と逆に回転しているので、ド
リフタ２２の把持部から前進し、掘り進むことを可能に
するためである。もし、雄ねじと同じ方向に回転させれ
ば、滑った場合は把持部から後進し、掘り進むことが出
来なくなる。At this time, the hollow through-type drifter 22 causes the roof bolt 20 to rotate in the direction opposite to that of the male screw 21. The reason why the roof bolt 20 is opposite to the male screw 21 even when the rock is hard and the gripping portion is slipped. This is because it is rotated in the forward direction, so that it is possible to move forward from the grip portion of the drifter 22 and dig forward. If it is rotated in the same direction as the male screw, if it slips, it will move backward from the grip and cannot dig.
【０００５】なお、図中２３はルーフボルト２０を継ぎ
足す時に用いるカップリングでその内周にはルーフボル
ト２０の雄ねじ２１と螺合する雌ねじ２４が形成されて
いる。また、２５は最先のルーフボルト２０の先端に取
着されるビットである。Reference numeral 23 in the drawing denotes a coupling used when the roof bolt 20 is replenished, and a female screw 24 which is screwed with the male screw 21 of the roof bolt 20 is formed on the inner periphery thereof. Further, 25 is a bit attached to the tip of the earliest roof bolt 20.
【０００６】[0006]
【発明が解決しようとする課題】ところで、長いルーフ
ボルト２０を必要とする時は、複数本のルーフボルト２
０を接続して使用するが、従来のカップリング２３は前
述したようにルーフボルト２０の端部外周（即ち、雄ね
じ２１）にねじ込んで使用するものである。By the way, when a long roof bolt 20 is required, a plurality of roof bolts 2 are used.
0 is connected and used, but the conventional coupling 23 is used by being screwed into the outer periphery (that is, the male screw 21) of the end portion of the roof bolt 20 as described above.
【０００７】そのため、ドリフタ２２によりルーフボル
ト２０をその雄ねじ２１と逆方向に回転させると、カッ
プリング２３が緩んでしまうことから、前記方向には回
転できず、結局、硬い岩盤においてルーフボルト２０を
接続して穿孔を施すことができないという不具合があっ
た。Therefore, when the roof bolt 20 is rotated in the opposite direction to the male screw 21 by the drifter 22, the coupling 23 is loosened, so that the roof bolt 20 cannot be rotated in the above-mentioned direction. There was a problem that it was not possible to connect and punch.
【０００８】そこで、本発明の目的は、硬い岩盤におい
ても、複数本接続して使用することが可能なルーフボル
トを提供することにある。[0008] Therefore, an object of the present invention is to provide a roof bolt which can be used by connecting a plurality of pieces even in hard rock.
【０００９】[0009]
【課題を解決するための手段】前記目的を達成するため
の、本発明の構成は、中空管体の外周全長に雄ねじを形
成し、その管体中間部を中空貫通型ドリフタの前記雄ね
じと螺合する把持部により把持し、該ドリフタにより打
撃と前記雄ねじと反対方向の回転をあたえて地面に穿孔
を施すルーフボルトにおいて、前記中空管体の端部内周
に、外周の前記雄ねじと逆方向のカップリング螺合用雌
ねじを形成したことを特徴とする。In order to achieve the above object, the structure of the present invention is such that a male thread is formed on the entire length of the outer circumference of a hollow tube, and the middle part of the tube is connected to the male thread of the hollow penetrating drifter. In a roof bolt that is gripped by a gripping portion that is screwed and that is hit and rotated in the direction opposite to the male screw by the drifter to make a hole in the ground, the inner periphery of the end of the hollow tube is opposite to the outer periphery of the male screw. It is characterized in that a female screw for coupling screwing in the direction is formed.
【００１０】[0010]
【作用】前記構成によれば、ルーフボルトの雌ねじに螺
合するカップリングを用いて接続することで、ルーフボ
ルトをその外周の雄ねじと逆方向に回転させてもカップ
リングが緩むことは無い。According to the above construction, the connection is made by using the coupling screwed to the female screw of the roof bolt, so that the coupling will not be loosened even when the roof bolt is rotated in the direction opposite to the external screw of the outer periphery thereof.
【００１１】[0011]
【実施例】以下、本発明の一実施例を添付図面に基づい
て説明する。図３に示すように、クローラドリル１に中
空貫通型ドリフタ２が搭載され、道路等の斜面Ｇにルー
フボルト３が打設されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. As shown in FIG. 3, a hollow penetrating drifter 2 is mounted on a crawler drill 1, and a roof bolt 3 is driven on a slope G of a road or the like.
【００１２】ルーフボルト３は、図１に示すようにカッ
プリング４で複数本（図３では３本）接続されるととも
に、最先のルーフボルト３の先端にはビット５が装着さ
れる。A plurality of roof bolts 3 (three in FIG. 3) are connected by a coupling 4 as shown in FIG. 1, and a bit 5 is attached to the tip of the frontmost roof bolt 3.
【００１３】また、ルーフボルト３は、図２に示すよう
に、中空管体３ａの外周全長に雄ねじ６が形成されると
ともに、管体両端部の内周に、前記カップリング４が螺
合し得る、前記雄ねじ６と逆方向の雌ねじ７が形成され
る。As shown in FIG. 2, in the roof bolt 3, a male thread 6 is formed on the entire outer circumference of the hollow tube body 3a, and the coupling 4 is screwed on the inner circumference of both ends of the tube body. A female screw 7 is formed in the opposite direction to the male screw 6, which is possible.
【００１４】前記カップリング４は、中空棒４ａの両端
小径部外周に前記ルーフボルト３の雌ねじ７と螺合する
雄ねじ８が形成されるとともに、中間大径部外周が六つ
の面取り部９から成っている。The coupling 4 has a male rod 8 which is screwed into the female screw 7 of the roof bolt 3 on the outer periphery of the small diameter portion of both ends of the hollow rod 4a, and the outer periphery of the intermediate large diameter portion is composed of six chamfered portions 9. ing.
【００１５】このように構成されるため、硬い岩盤から
なる斜面Ｇ等に穿孔を施す際に、前記カップリング４で
接続された複数本のルーフボルト３を中空貫通型ドリフ
タ２によりその雄ねじ６と反対方向に回転させると、硬
い岩盤によりドリフタ２の把持部が滑った場合でも、ル
ーフボルト３は前記雄ねじ６と逆に回転してドリフタ２
の把持部から前進し、掘り進むことができる。With this structure, when the slope G or the like made of hard rock is drilled, the plurality of roof bolts 3 connected by the coupling 4 are connected to the male screw 6 by the hollow penetrating drifter 2. When rotated in the opposite direction, even if the grip of the drifter 2 slips due to hard rock, the roof bolt 3 rotates in the opposite direction of the male screw 6 and the drifter 2 rotates.
It is possible to move forward from the gripping part and dig.
【００１６】また、この際ルーフボルト３の雌ねじ７と
カップリング４の雄ねじ８がルーフボルト外周の雄ねじ
６と逆方向なので、前記穿孔にあたってルーフボルト３
をその雄ねじ６と反対方向に回転させると雌ねじ７が締
まることになり、接続状態が確実に保持されて長いルー
フボルト３として使用することができる。Further, at this time, since the female screw 7 of the roof bolt 3 and the male screw 8 of the coupling 4 are in the opposite directions to the male screw 6 on the outer periphery of the roof bolt, the roof bolt 3 is used for the perforation.
When the screw is rotated in the opposite direction to the male screw 6, the female screw 7 is tightened, and the connected state is reliably maintained, so that it can be used as the long roof bolt 3.
【００１７】[0017]
【発明の効果】以上説明したように本発明によれば、ル
ーフボルトの端部内周に、外周全長に形成した雄ねじと
逆方向のカップリング螺合用雌ねじを形成したので、硬
い岩盤においても、複数本接続して使用することができ
る。As described above, according to the present invention, a male screw formed on the entire length of the outer circumference and a female screw for coupling screwing in the opposite direction are formed on the inner circumference of the end portion of the roof bolt. It can be used by connecting to the main.
【図１】本発明の一実施例を示すルーフボルトの分解斜
視図である。FIG. 1 is an exploded perspective view of a roof bolt showing an embodiment of the present invention.
【図２】同じく要部を拡大した説明図である。FIG. 2 is an explanatory view of an enlarged main part of the same.
【図３】同じく施工状態の説明図である。FIG. 3 is also an explanatory diagram of a construction state.
【図４】従来例の分解斜視図である。FIG. 4 is an exploded perspective view of a conventional example.
【図５】同じく要部を拡大した説明図である。FIG. 5 is an explanatory diagram similarly enlarging a main part.
３ ルーフボルト ３ａ 中空管体 ４ カップリング ６ 雄ねじ ７ 雌ねじ ８ 雄ねじ 3 Roof bolt 3a Hollow tube 4 Coupling 6 Male screw 7 Female screw 8 Male screw
───────────────────────────────────────────────────── フロントページの続き (72)発明者 国分 茂夫 東京都新宿区西新宿一丁目25番１号 大成 建設株式会社内 (72)発明者 大原 孝彦 東京都新宿区西新宿一丁目25番１号 大成 建設株式会社内 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Shigeo Kokubun 1-25-1 Nishishinjuku, Shinjuku-ku, Tokyo Within Taisei Corporation (72) Inventor Takahiko Ohara 1-25-1 Nishishinjuku, Shinjuku-ku, Tokyo Within Taisei Construction Co., Ltd.
Claims (1)
その管体中間部を中空貫通型ドリフタの前記雄ねじと螺
合する把持部により把持し、該ドリフタにより打撃と前
記雄ねじと反対方向の回転をあたえて地面に穿孔を施す
ルーフボルトにおいて、前記中空管体の端部内周に、外
周の前記雄ねじと逆方向のカップリング螺合用雌ねじを
形成したことを特徴とするルーフボルト。1. A male screw is formed on the entire length of the outer circumference of the hollow tubular body,
In the roof bolt, the middle portion of the tubular body is gripped by a gripping portion of the hollow through-type drifter that is screwed with the male screw, and the drifter punches the ground by hitting and rotating in a direction opposite to the male screw. A roof bolt, wherein a female screw for coupling screwing is formed on the inner circumference of the end of the pipe body in the opposite direction to the male screw on the outer circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6031592A JPH05263577A (en) | 1992-03-17 | 1992-03-17 | Roof bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6031592A JPH05263577A (en) | 1992-03-17 | 1992-03-17 | Roof bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05263577A true JPH05263577A (en) | 1993-10-12 |
Family
ID=13138625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6031592A Pending JPH05263577A (en) | 1992-03-17 | 1992-03-17 | Roof bolt |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05263577A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006517010A (en) * | 2003-01-30 | 2006-07-13 | アトラス コプコ ロツク ドリルス アクチボラグ | Coupling sleeve to connect threaded rock bolt to impact rock drill |
| US8142109B2 (en) * | 2008-03-18 | 2012-03-27 | Dywidag-Systems International Gmbh | Corrosion-protected, self-drilling anchor and anchor subunit and method for the production thereof |
| NL2022034A (en) * | 2018-11-20 | 2020-05-26 | Jetmix B V | A metal construction tie |
-
1992
- 1992-03-17 JP JP6031592A patent/JPH05263577A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006517010A (en) * | 2003-01-30 | 2006-07-13 | アトラス コプコ ロツク ドリルス アクチボラグ | Coupling sleeve to connect threaded rock bolt to impact rock drill |
| US8142109B2 (en) * | 2008-03-18 | 2012-03-27 | Dywidag-Systems International Gmbh | Corrosion-protected, self-drilling anchor and anchor subunit and method for the production thereof |
| NL2022034A (en) * | 2018-11-20 | 2020-05-26 | Jetmix B V | A metal construction tie |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 19991019 |