JPH0949399A - Head part device for lock bolt - Google Patents
Head part device for lock boltInfo
- Publication number
- JPH0949399A JPH0949399A JP22259795A JP22259795A JPH0949399A JP H0949399 A JPH0949399 A JP H0949399A JP 22259795 A JP22259795 A JP 22259795A JP 22259795 A JP22259795 A JP 22259795A JP H0949399 A JPH0949399 A JP H0949399A
- Authority
- JP
- Japan
- Prior art keywords
- nut
- bearing plate
- lock bolt
- taper
- head
- 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.)
- Granted
Links
Landscapes
- Piles And Underground Anchors (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、トンネルの支保工や、
法面の永久構造物としてのロツクボルト工における中空
型自穿孔ロツクボルト，全面接着型ロツクボルト等のロ
ツクボルトの頭部装置に関するものである。BACKGROUND OF THE INVENTION The present invention relates to tunnel support and
The present invention relates to a head device for a rock bolt such as a hollow self-drilling rock bolt or a full-bonding type rock bolt in a rock bolt work as a permanent structure of a slope.
【０００２】[0002]
【従来の技術】従来、トンネル等の支保工としてのロツ
クボルトの頭部装置は、ナツトでベアリングプレートを
締付けることが定められている。2. Description of the Related Art Conventionally, a head device of a rock bolt for supporting a tunnel or the like is required to tighten a bearing plate with a nut.
【０００３】そのために、施工の際には、地山内にロツ
クボルトを挿入した後、該ロツクボルトの突出部にベア
リングプレートの孔を嵌合してそのロツクボルトの突出
部に螺合するナツトによりベアリングプレートを締付け
固定する方法が採られている。Therefore, at the time of construction, after inserting the rock bolt into the ground, the hole of the bearing plate is fitted into the projecting portion of the rock bolt, and the bearing plate is fitted with the nut screwed to the projecting portion of the rock bolt. The method of tightening and fixing is adopted.
【０００４】従つて、トンネル等の表面側にナツトが突
出して位置してロツクボルトの頭部装置の突出部が大き
いから、地山の一次覆工面に防水シート等を敷設するに
当つては、防水シートを損傷しない等のために、ロツク
ボルトの突出部にキヤツプや不織布を付帯している。Therefore, since the nut is located so as to project on the surface side of the tunnel or the like and the projection of the head device of the rock bolt is large, when laying a waterproof sheet or the like on the primary lining surface of the natural ground, it is waterproof. A cap or a non-woven fabric is attached to the protruding portion of the lock bolt to prevent damage to the seat.
【０００５】また、この種のロツクボルトの頭部装置で
本発明に類似するものとして、特開平７−１１９３９３
号公報に記載された発明がある。A lock bolt head device of this type similar to the present invention is disclosed in Japanese Patent Laid-Open No. 7-119393.
There is an invention described in the publication.
【０００６】ところで、上記特開平７−１１９３９３号
公報に記載されたロツクボルトの頭部装置は、ベアリン
グプレートの内側にナツトを溶接し、地山内に挿入した
ロツクボルトの頭部側に上記ベアリングプレートのナツ
トを螺合して締付け、そのベアリングプレートにより上
記地山の一次覆工面を支承する構成である。The rock bolt head device disclosed in Japanese Patent Laid-Open No. 7-119393 mentioned above has a nut welded to the inside of the bearing plate, and the nut of the bearing plate is fitted to the head side of the rock bolt inserted into the ground. Is tightened by screwing, and the bearing plate supports the primary lining surface of the natural ground.
【０００７】[0007]
【発明が解決しようとする課題】上記従来の前者のロツ
クボルトの頭部装置においては、沢山使用するすべての
ロツクボルトにキヤツプ等の付帯作業を行うから、その
作業は大変な手間となつている。In the former lock bolt head device described above, all the many bolt bolts to be used are attached work such as caps, which is a troublesome work.
【０００８】一方、後者の特開平７−１１９３９３号公
報に記載されたロツクボルトの頭部装置においては、ベ
アリングプレートとナツトを溶接により一体化してい
る。従つて、On the other hand, in the latter lock bolt head device disclosed in Japanese Patent Laid-Open No. 7-119393, the bearing plate and nut are integrated by welding. Therefore,
【０００９】（１） ベアリングプレートとナツトの溶
接の強度にはばらつきがあるために、ベアリングプレー
トを介してナツトとの溶接部に荷重が作用すると、その
溶接部が外れる場合がある。(1) Since the welding strength between the bearing plate and the nut varies, if a load acts on the welded portion with the nut through the bearing plate, the welded portion may come off.
【００１０】（２） ベアリングプレートとナツトを溶
接により一体化しているために、重くてそのナツトをロ
ツクボルトの突出部に螺合するのに難がある。(2) Since the bearing plate and the nut are integrated by welding, it is heavy and it is difficult to screw the nut into the projecting portion of the lock bolt.
【００１１】（３） ベアリングプレートとナツトが一
体となつているために、運搬，収納等のときにベアリン
グプレートを重ねることが難かしくてベアリングプレー
トがかさばる点である。(3) Since the bearing plate and nut are integrated, it is difficult to stack the bearing plates during transportation, storage, etc., and the bearing plates are bulky.
【００１２】[0012]
【課題を解決するための手段】本発明は、トンネル等の
支保工としてのロツクボルトにおいて、安定した耐力を
有しながら、頭部の突出部を短く形成して施工対象面の
処理を簡易に行うことができ、且つ、運搬および取扱い
上便利なロツクボルトの頭部装置を提供することを目的
とする。SUMMARY OF THE INVENTION According to the present invention, in a rock bolt for supporting a tunnel or the like, a projecting portion of a head portion is formed to be short while having a stable yield strength, and a surface to be constructed can be easily treated. It is an object of the present invention to provide a lock bolt head device that can be carried and is convenient for transportation and handling.
【００１３】すなわち、ナツト（１）の先端部に先端側
が小径のテーパー鍔（２）を一体に形成し、そのナツト
（１）をベアリングプレート（３）の孔（４）に挿通
し、地山内に挿入したロツクボルト（Ａ）の頭部側にナ
ツト（１）をそのナツト（１）の基端側から螺合し、該
ナツト（１）のテーパー鍔（２）によりベアリングプレ
ート（３）を支持してロツクボルトの頭部装置を構成
し、ロツクボルトの頭部装置として安定した耐力を有し
ながら、その頭部装置の突出部を短く形成して施工対象
面の処理を簡易に行うことができ、且つ、運搬および取
扱い上便利にする目的を、ナツトの先端部にテーパー鍔
を一体に形成してそのナツトをベアリングプレートの孔
に挿通し、ロツクボルトの頭部側に上記ナツトを該ナツ
トの基端側から螺合し、上記ナツトのテーパー鍔で上記
ベアリングプレートを支持することにより実現した。That is, a taper collar (2) having a small diameter on the tip side is integrally formed at the tip portion of the nut (1), and the nut (1) is inserted into the hole (4) of the bearing plate (3), and the inside of the ground is closed. The nut (1) is screwed into the head side of the lock bolt (A) inserted in the nut from the base end side of the nut (1), and the bearing plate (3) is supported by the taper collar (2) of the nut (1). Then, the head device of the lock bolt is configured, and while having a stable proof strength as the head device of the lock bolt, the protruding portion of the head device can be formed short to easily perform the processing of the target surface, In addition, for the purpose of convenience in transportation and handling, a taper collar is integrally formed at the tip of the nut, the nut is inserted into the hole of the bearing plate, and the nut is attached to the head side of the lock bolt. Screwed from the side It was achieved by supporting the bearing plate tapered flange of the nut.
【００１４】[0014]
【実施例】図１乃至図６は、本発明の第一実施態様を示
し、その構成を図面について説明すれば、（Ａ）は中空
全ねじボルトより成る中空型自穿孔ロツクボルト、
（Ｂ）は地山を示し、（５）はロツクボルト（Ａ）によ
る地山（Ｂ）の穿孔、（６）は穿孔（５）内に注入した
グラウト材等の定着材である。1 to 6 show a first embodiment of the present invention, the structure of which will be described with reference to the drawings. (A) is a hollow self-drilling rock bolt composed of a hollow full screw bolt,
(B) shows the ground, (5) is the perforation of the ground (B) by the rock bolt (A), (6) is a fixing material such as grout material injected into the perforation (5).
【００１５】（Ｃ）はロツクボルト（Ａ）の頭部体を示
し、（１）は頭部体（Ｃ）の六角ナツトで、該六角ナツ
ト（１）の先端部には、球面状で先端側が小径のテーパ
ー鍔（２）を一体に形成する。（３）はベアリングプレ
ートで、中央部には六角孔（４）を穿つ。(C) shows the head body of the lock bolt (A), (1) is the hexagonal nut of the head body (C), and the tip of the hexagonal nut (1) is spherical and has a tip end side. A small diameter taper collar (2) is integrally formed. (3) is a bearing plate, and a hexagonal hole (4) is drilled in the central portion.
【００１６】その作用を説明する。図１に示すように、
ロツクボルト（Ａ）によつて地山（Ｂ）に所要深さに穿
孔（５）した後、グラウト材等の定着材（６）をロツク
ボルト（Ａ）の中空部内に通して穿孔（５）内に注入す
る。The operation will be described. As shown in FIG.
After drilling (5) the rock mass (B) to the required depth with the rock bolt (A), a fixing material (6) such as grout material is passed through the hollow portion of the rock bolt (A) and then drilled into the hole (5). inject.
【００１７】一方、テーパー鍔（２）付き六角ナツト
（１）の六角ナツト（１）をベアリングプレート（３）
の六角孔（４）に挿通して頭部体（Ｃ）を構成する。On the other hand, the hexagon nut (1) of the hexagon nut (1) with the taper collar (2) is attached to the bearing plate (3).
The head body (C) is formed by inserting it into the hexagonal hole (4).
【００１８】そして、図１および図２に示すように、上
記ロツクボルト（Ａ）の頭部側に頭部体（Ｃ）のテーパ
ー鍔（２）付き六角ナツト（１）の基部側を当ててベア
リングプレート（３）を手等により回転操作し、該ベア
リングプレート（３）の六角孔（４）に六角ナツト
（１）が係合するテーパー鍔（２）付き六角ナツト
（１）を一体で回転させてそのテーパー鍔（２）付き六
角ナツト（１）をロツクボルト（Ａ）に螺合すると共
に、ベアリングプレート（３）を地山（Ｂ）の表面に当
てる。Then, as shown in FIGS. 1 and 2, the head side of the lock bolt (A) is brought into contact with the base side of the hexagon nut (1) with the taper collar (2) of the head body (C). Rotate the plate (3) by hand or the like to integrally rotate the hexagon nut (1) with the taper collar (2) in which the hexagon nut (1) engages with the hexagon hole (4) of the bearing plate (3). The hexagon nut (1) with the tapered flange (2) is screwed into the lock bolt (A), and the bearing plate (3) is applied to the surface of the natural ground (B).
【００１９】その後、図示してないが、地山（Ｂ）の表
面に防水シート等を敷設する。Thereafter, although not shown, a waterproof sheet or the like is laid on the surface of the ground (B).
【００２０】また、上記中空型自穿孔ロツクボルト
（Ａ）に代え、予め、穿孔機で地山に穿孔した後、その
穿孔内にロツクボルトを挿入してグラウト材等の定着材
を注入する工法の全面接着型ロツクボルトにおいても、
上記頭部体（Ｃ）を上記と同様に使用することができ
る。Further, instead of the hollow type self-drilling rock bolt (A), after boring the ground beforehand with a boring machine, the rock bolt is inserted into the boring and a fixing material such as grout material is injected into the whole surface. For adhesive type lock bolts,
The head body (C) can be used in the same manner as above.
【００２１】六角ナツト（１）のテーパー鍔（２）は、
上記の球面状で先端側が小径の形状に代え、先端側が小
径の截頭円錐状に形成してもよい。The taper collar (2) of the hexagon nut (1) is
Instead of the spherical shape having the small diameter on the tip side, the tip side may be formed in a truncated cone shape having the small diameter.
【００２２】図７乃至図１１は、本発明の第二実施態様
を示し、その構成を図面について説明すれば、（Ｃ１）
はロツクボルト（Ａ）の頭部体を示し、（１ａ）は頭部
体（Ｃ１）の丸ナツトで、該丸ナツト（１ａ）の先端部
には、先端側が球面状のテーパー（７）をなして基部側
が六角形（８）のテーパー鍔（２ａ）を一体に形成す
る。（３ａ）はベアリングプレートで、中央部には丸孔
（４ａ）を穿つ。その他の符号は、図１乃至図６におけ
ると同一部分を示す。7 to 11 show a second embodiment of the present invention, and its configuration will be described with reference to the drawings (C1).
Shows a head body of the lock bolt (A), (1a) is a round nut of the head body (C1), and the tip side of the round nut (1a) has a taper (7) having a spherical tip side. Then, a taper collar (2a) having a hexagonal shape (8) on the base side is integrally formed. (3a) is a bearing plate, and a round hole (4a) is bored in the central portion. Other reference numerals indicate the same parts as those in FIGS. 1 to 6.
【００２３】この構成のものにおいても、図７に示すよ
うに、テーパー鍔（２ａ）付き丸ナツト（１ａ）の丸ナ
ツト（１ａ）をベアリングプレート（３ａ）の丸孔（４
ａ）に挿通して頭部体（Ｃ１）を構成する。Also in this structure, as shown in FIG. 7, the round nut (1a) of the round nut (1a) with the tapered collar (2a) is replaced by the round hole (4) of the bearing plate (3a).
The head body (C1) is formed by inserting it into a).
【００２４】そして、上記実施例と同様に、ロツクボル
ト（Ａ）の頭部側に頭部体（Ｃ１）のテーパー鍔（２
ａ）付き丸ナツト（１ａ）の基部側を当て、その丸ナツ
ト（１ａ）のテーパー鍔（２ａ）の六角形（８）部にス
パナ等を係合させてテーパー鍔（２ａ）付き丸ナツト
（１ａ）を回転操作し、該テーパー鍔（２ａ）付き丸ナ
ツト（１ａ）をロツクボルト（Ａ）に螺合すると共に、
ベアリングプレート（３ａ）を地山（Ｂ）の表面に当て
る。Then, similarly to the above-described embodiment, the taper collar (2) of the head body (C1) is attached to the head side of the lock bolt (A).
a) The base side of the round nut (1a) with abutment is applied, and the hexagonal (8) portion of the taper collar (2a) of the round nut (1a) is engaged with a spanner or the like so that the round nut with a taper collar (2a) ( 1a) is rotated to screw the round nut (1a) with the taper collar (2a) into the lock bolt (A),
The bearing plate (3a) is applied to the surface of the natural ground (B).
【００２５】その後、図示してないが、地山（Ｂ）の表
面に防水シート等を敷設する。Thereafter, although not shown, a waterproof sheet or the like is laid on the surface of the ground (B).
【００２６】[0026]
【発明の効果】本発明のロツクボルトの頭部装置は、下
記のような利点がある。The lock bolt head device of the present invention has the following advantages.
【００２７】（１） 先端部にテーパー鍔を一体に形成
したナツトをベアリングプレートの孔に挿通し、そのナ
ツトを該ナツトの基部側からロツクボルトの頭部側に螺
合し、ベアリングプレートをナツトのテーパー鍔により
支持し地山の表面に当ててそのベアリングプレートによ
り地山の表面を支承するから、ナツトがベアリングプレ
ートの内部に隠れてロツクボルトの頭部のベアリングプ
レートより外方に突出する部分が少ない。従つて、(1) A nut having a taper collar integrally formed at its tip is inserted into a hole of a bearing plate, and the nut is screwed from the base side of the nut to the head side of the lock bolt to attach the bearing plate to the nut. Since the bearing plate supports the ground surface by supporting it with a taper collar and bearings the ground surface with its bearing plate, the nut is hidden inside the bearing plate and there is less part of the head of the lock bolt projecting outward than the bearing plate. . Therefore,
【００２８】（イ） トンネルのロツクボルトに使用し
た場合は、ロツクボルトの突出部が防水シートを敷設す
る障害にならないから、上記突出部に従来のようにキヤ
ツプや不織布を付帯する必要がなくて施工対象面の処理
を簡易に行うことができ、支保工の施工が容易となつて
作業能率を向上する。(B) When used as a rock bolt for a tunnel, the projection of the rock bolt does not obstruct the laying of the waterproof sheet, so that there is no need to attach a cap or a non-woven fabric to the projection as in the prior art. The surface can be easily treated, the support work can be easily constructed, and the work efficiency is improved.
【００２９】（ロ） 法面の受圧板のロツクボルトとし
て使用した場合は、ロツクボルトの突出部が受圧板の内
部に隠れて仕上げが綺麗になる。(B) When it is used as a lock bolt of the pressure receiving plate on the slope, the protrusion of the lock bolt is hidden inside the pressure receiving plate, so that the finish is beautiful.
【００３０】（２） ナツトとその先端部のテーパー鍔
を一体に形成してベアリングプレートに掛る荷重を上記
ナツトのテーパー鍔により支持するから、ベアリングプ
レートの支持に安定した耐力を有し、地山の表面を確実
に支承して安全上有益である。(2) Since the nut and the taper flange of the tip portion thereof are integrally formed and the load applied to the bearing plate is supported by the taper flange of the nut, the bearing plate has a stable proof stress and is stable. The surface of is surely supported, which is beneficial for safety.
【００３１】（３） ナツトの先端部の鍔を、先端側が
小径のテーパーに形成したから、その鍔によつて防水シ
ートを損傷するおそれがない。(3) Since the brim at the tip of the nut is formed to have a taper with a small diameter on the tip side, there is no risk of damaging the waterproof sheet by the brim.
【００３２】（４） 重いベアリングプレートとナツト
が分離している。従つて、(4) The heavy bearing plate and nut are separated. Therefore,
【００３３】（イ） ベアリングプレートとナツトを別
々に取扱い、ナツトをロツクボルトに螺合することが容
易で作業性が良い。(A) It is easy to handle the bearing plate and the nut separately and screw the nut into the lock bolt, which is good in workability.
【００３４】（ロ） ベアリングプレートを良好に積重
ねることができるから、運搬，収納等取扱い上便利であ
る。(B) Since the bearing plates can be stacked well, it is convenient in handling such as transportation and storage.
【００３５】（５） 簡単に構成して容易安価に製作で
きる。(5) It can be manufactured easily and inexpensively with a simple structure.
【図１】本発明の第一実施態様の頭部装置を有する中空
型自穿孔ロツクボルトを設置した状態の縦断正面図であ
る。FIG. 1 is a vertical sectional front view showing a state in which a hollow self-drilling rock bolt having a head device according to a first embodiment of the present invention is installed.
【図２】同上要部の拡大正断面図である。FIG. 2 is an enlarged front sectional view of a main part of the same.
【図３】そのテーパー鍔付き六角ナツトの正面図で、上
半部を切断して示す。FIG. 3 is a front view of the hexagon nut with the taper collar, showing an upper half portion thereof in a cut state.
【図４】同上側面図である。FIG. 4 is a side view of the same.
【図５】ベアリングプレートの側面図である。FIG. 5 is a side view of a bearing plate.
【図６】同上正面図である。FIG. 6 is a front view of the same.
【図７】本発明の第二実施態様の頭部装置を有するロツ
クボルトを設置した状態の要部の正断面図である。FIG. 7 is a front cross-sectional view of a main part in a state where a lock bolt having a head device according to a second embodiment of the present invention is installed.
【図８】そのテーパー鍔付き丸ナツトの正面図で、上半
部を切断して示す。FIG. 8 is a front view of the round nut with the tapered brim, in which the upper half is cut away.
【図９】同上側面図である。FIG. 9 is a side view of the same.
【図１０】ベアリングプレートの側面図である。FIG. 10 is a side view of the bearing plate.
【図１１】同上正面図である。FIG. 11 is a front view of the same.
Ａ ロツクボルト Ｂ 地山 Ｃ 頭部体 １ 六角ナツト ２ テーパー鍔 ３ ベアリングプレート ４ 六角孔 ５ 穿孔 ６ グラウト材等の定着材 Ｃ１ 頭部体 １ａ 丸ナツト ２ａ テーパー鍔 ３ａ ベアリングプレート ４ａ 丸孔 ７ テーパー ８ 六角形 A Rock bolt B Ground C Head body 1 Hexagonal nut 2 Tapered flange 3 Bearing plate 4 Hexagonal hole 5 Perforation 6 Fixing material such as grout material C1 Head body 1a Round nut 2a Tapered flange 3a Bearing plate 4a Round hole 7 Tapered 8 Polygon
Claims (3)
ー鍔を一体に形成し、上記ナツトをベアリングプレート
の孔に挿通し、地山内に挿入したロツクボルトの頭部側
に上記ナツトをそのナツトの基部側から螺合して該ナツ
トのテーパー鍔により上記ベアリングプレートを支持す
ることを特徴とするロツクボルトの頭部装置。1. A nut is formed integrally with a taper collar having a small diameter on the tip side of the nut, the nut is inserted into a hole of a bearing plate, and the nut is attached to the head side of a rock bolt inserted into the ground. A head device for a rock bolt, which is screwed from the base side to support the bearing plate by a taper collar of the nut.
小径のテーパー鍔を一体に形成し、上記六角ナツトをベ
アリングプレートの六角孔に係合して挿通したことを特
徴とする請求項１記載のロツクボルトの頭部装置。2. A hexagonal nut having a spherical shape and a taper collar having a small diameter on the front end side formed integrally with the tip end portion of the hexagon nut, and the hexagon nut is inserted into a hexagonal hole of a bearing plate to be inserted therethrough. The described lock bolt head device.
テーパーをなして基部側が六角形のテーパー鍔を一体に
形成し、上記丸ナツトをベアリングプレートの丸孔に挿
通したことを特徴とする請求項１記載のロツクボルトの
頭部装置。3. A round nut is integrally formed with a spherical taper on the tip side and a hexagonal taper on the base side, and the round nut is inserted into a round hole of a bearing plate. The lock bolt head device according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22259795A JP3540063B2 (en) | 1995-08-08 | 1995-08-08 | Lock bolt nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22259795A JP3540063B2 (en) | 1995-08-08 | 1995-08-08 | Lock bolt nut |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0949399A true JPH0949399A (en) | 1997-02-18 |
| JP3540063B2 JP3540063B2 (en) | 2004-07-07 |
Family
ID=16784972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22259795A Expired - Fee Related JP3540063B2 (en) | 1995-08-08 | 1995-08-08 | Lock bolt nut |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3540063B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110700867A (en) * | 2019-10-30 | 2020-01-17 | 神华神东煤炭集团有限责任公司 | Roof support method |
-
1995
- 1995-08-08 JP JP22259795A patent/JP3540063B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110700867A (en) * | 2019-10-30 | 2020-01-17 | 神华神东煤炭集团有限责任公司 | Roof support method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3540063B2 (en) | 2004-07-07 |
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