JP2748306B2 - Large-diameter drilling equipment and hole saws used in large-diameter drilling equipment - Google Patents
Large-diameter drilling equipment and hole saws used in large-diameter drilling equipmentInfo
- Publication number
- JP2748306B2 JP2748306B2 JP7066791A JP6679195A JP2748306B2 JP 2748306 B2 JP2748306 B2 JP 2748306B2 JP 7066791 A JP7066791 A JP 7066791A JP 6679195 A JP6679195 A JP 6679195A JP 2748306 B2 JP2748306 B2 JP 2748306B2
- Authority
- JP
- Japan
- Prior art keywords
- hole saw
- diameter
- cylindrical body
- tip
- edge
- 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.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
- B28D1/04—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs
- B28D1/041—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs with cylinder saws, e.g. trepanning; saw cylinders, e.g. having their cutting rim equipped with abrasive particles
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Drilling Tools (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は、大口径の穴あけを行
う大口径穴あけ装置および大口径穴あけ装置に用いられ
るホールソーに関し、特に、たとえば鉄筋コンクリート
構造物等に直径１ｍ以上の大口径の穴あけをするために
使用される大口径穴あけ装置およびホールソーを回転さ
せて大口径の穴あけを行う大口径穴あけ装置に用いられ
るホールソーに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a large-diameter drilling apparatus for drilling large-diameter holes and a hole saw used in the large-diameter drilling apparatus, and more particularly to a large-diameter drilling of a diameter of 1 m or more in a reinforced concrete structure or the like. The present invention relates to a large-diameter drilling device used for the above and a hole saw used in a large-diameter drilling device for drilling a large-diameter hole by rotating a hole saw.
【０００２】[0002]
【従来の技術】従来のダイヤモンドホールソーは、その
外径がたとえば３００〜５００ｍｍといったように比較
的小さく、図１４（Ａ）に示すように駆動源の回転力を
ホールソー１に伝達するチャック部分２が、ホールソー
１の鋼管３の径よりも小さくなっている。また、ホール
ソー１を回転させる回転駆動部分が、この細くなったチ
ャック部分２の後方に位置している。2. Description of the Related Art A conventional diamond hole saw has a relatively small outer diameter of, for example, 300 to 500 mm, and a chuck portion 2 for transmitting the rotational force of a driving source to a hole saw 1 as shown in FIG. , The diameter of the steel pipe 3 of the hole saw 1 is smaller. Further, a rotation drive portion for rotating the hole saw 1 is located behind the thinned chuck portion 2.
【０００３】従来の比較的小型のダイヤモンドホールソ
ーを転用して穴あけ作業を行えば、図１４（Ａ）に示さ
れるコアーＡがダイヤモンドホールソー１の中空部内に
残存し、このコアーＡを除去することにより被穴あけ物
に穴を開けることができる。If a conventional relatively small diamond hole saw is diverted for drilling, the core A shown in FIG. 14 (A) remains in the hollow portion of the diamond hole saw 1 and the core A is removed. A hole can be made in a drilled object.
【０００４】とくに、このダイヤモンドホールソー１に
よって開ける穴が横長の場合は、穴が抜けたとき、ホー
ルソー１とホールソー１の中空部内のコアーＡが一体に
なって回転し、このとき、コアーＡがホールソー１の中
空部内に取り込まれる。この従来のホールソー１では、
コアーＡをホールソー１のダイヤモンド切刃側に抜き出
さなければならないため、ダイヤモンド切刃とホールソ
ー１の鋼管３の中空部内の壁面との間に段差があるため
に、ダイヤモンド切刃４が障害となりコアーＡを抜き出
すことが容易ではない。したがって、この従来のホール
ソー１を用いた装置では、たとえば、鉄筋コンクリート
構造物等のような比較的重量が重く、しかも、開けよう
とする穴径が１ｍを越えるような大口径の穴あけとして
利用しようとした場合、コアーＡの重量がいきおい重く
なり、より一層ホールソー１からコアーＡを抜き出すこ
とが困難となり、穴あけを行うこと自体が困難となる。[0004] In particular, when the hole to be drilled by the diamond hole saw 1 is horizontally long, when the hole comes out, the hole saw 1 and the core A in the hollow portion of the hole saw 1 rotate integrally. 1 is taken into the hollow part. In this conventional hole saw 1,
Since the core A must be extracted to the diamond cutting edge side of the hole saw 1, there is a step between the diamond cutting edge and the wall surface in the hollow portion of the steel pipe 3 of the hole saw 1, so that the diamond cutting edge 4 becomes an obstacle and the core It is not easy to extract A. Therefore, in the apparatus using the conventional hole saw 1, for example, a relatively heavy weight such as a reinforced concrete structure and the like, and a large-diameter hole whose hole diameter to be drilled exceeds 1 m are used. In this case, the weight of the core A becomes extremely heavy, making it more difficult to extract the core A from the hole saw 1 and making the drilling itself difficult.
【０００５】そこで、本願出願人は、先に、特願平６−
２７５８８１号として、かかる課題を解決するための大
口径穴あけ装置および大口径穴あけ装置に用いられるホ
ールソーを提案した。Accordingly, the applicant of the present application has previously filed Japanese Patent Application No.
No. 275881 proposes a large-diameter hole drilling device for solving such a problem and a hole saw used in the large-diameter hole drilling device.
【０００６】この大口径穴あけ装置は、大口径の穴あけ
装置であって、剛体からなる大口径円筒体の口縁部の先
端に焼結体の切刃が形成され、円筒体が先端から後端ま
で同径で且つ中空状で、前端および後端のいずれも開口
されてなるホールソーと、ホールソーを回転させる駆動
源の駆動力を伝達し、ホールソーを回転させる回転手段
と、ホールソーを被穴あけ体に向けて進退させるホール
ソー送り手段とを含む、大口径穴あけ装置である。This large-diameter drilling device is a large-diameter drilling device, in which a cutting edge of a sintered body is formed at the tip of the edge of a large-diameter cylindrical body made of a rigid body, and the cylindrical body is cut from the tip to the rear end. A hole saw having the same diameter and a hollow shape, both the front end and the rear end being opened, a driving means for transmitting a driving force of a driving source for rotating the hole saw, a rotating means for rotating the hole saw, and a hole saw for forming a body to be drilled. A large-diameter hole drilling device including a hole saw feed means for moving forward and backward.
【０００７】また、このホールソーは、ホールソーを回
転させて大口径の穴あけを行う大口径穴あけ装置に用い
られるホールソーであって、剛体からなる大口径円筒体
の口縁部の先端に焼結体の切刃が形成され、円筒体の先
端から後端まで同形で且つ中空状で、前端および後端の
いずれも開口されている、ホールソーである。This hole saw is a hole saw used in a large-diameter drilling machine for drilling a large-diameter hole by rotating the hole saw. A sintered body is provided at the tip of the edge of a large-diameter cylindrical body made of a rigid body. This is a hole saw having a cutting blade, the same shape and a hollow shape from the front end to the rear end of the cylindrical body, and both the front end and the rear end are open.
【０００８】この発明によれば、被穴あけ体の深部に至
るまで同径で同一形状にホールソーにより切削して穴あ
けができ、そのために、ホールソーの中空部内に残った
被穴あけ体を切削してなるコアーをホールソーの開口し
た後端より引き出すことができる。According to the present invention, drilling can be performed by using a hole saw to have the same diameter and the same shape up to the deep portion of the drilled body, and therefore, the drilled body remaining in the hollow portion of the hole saw is cut. The core can be pulled out from the opened rear end of the hole saw.
【０００９】また、ホールソーは中空状に形成されてい
るので、被穴あけ体にホールソーを移動して切り込んで
いくことにより穴が開けられるが、穴あけ加工が進んで
いき被穴あけ体の深部で被穴あけ体の破断がおきても、
たとえばホールソーの中空部に被穴あけ体を切削してな
るコアーをより深部に向けて押圧するかあるいは別途保
持手段で保持することにより、円筒体内を滑らしながら
コアーをホールソーの開口した後端より外部に引き出す
ことが容易にできるようにすることができる。Further, since the hole saw is formed in a hollow shape, a hole is formed by moving the hole saw into the body to be drilled and cutting the hole saw. However, drilling proceeds and a hole is drilled at a deep portion of the body to be drilled. Even if the body breaks,
For example, by pressing the core formed by cutting a body to be drilled in the hollow part of the hole saw toward a deeper part or holding it separately with holding means, sliding the core inside the cylindrical body and moving the core outward from the rear end of the hole saw opening It can be easily pulled out.
【００１０】特願平６−２７５８８１号に係る発明で
は、図１５に示すように、ホールソー１は、大口径円筒
体の前端の口縁部に、ダイヤモンド砥粒を含むチップ状
の金属焼結体からなる切刃４が適宜な間隔で連続して固
定されて形成される。切刃４は、断面凸字状で平面方形
のチップ状に形成され、その左右端の凸部５には、貫通
孔６が形成され、貫通孔６にボルト７等の固定手段が嵌
挿され、円筒体の口縁部の先端に形成された固定穴（図
示せず）にボルト７を螺着して切刃４が円筒体の先端口
縁部に固定されている。[0010] In the invention according to Japanese Patent Application No. 6-275881, as shown in FIG. 15, a hole-saw 1 is a chip-shaped metal sintered body containing diamond abrasive grains at the front edge of a large-diameter cylindrical body. The cutting blades 4 are formed by being continuously fixed at appropriate intervals. The cutting blade 4 is formed in a flat rectangular chip shape with a convex cross section, and a through hole 6 is formed in the left and right end convex portions 5, and fixing means such as a bolt 7 is inserted into the through hole 6. The cutting blade 4 is fixed to the distal edge of the cylindrical body by screwing a bolt 7 into a fixing hole (not shown) formed at the distal end of the peripheral edge of the cylindrical body.
【００１１】[0011]
【発明が解決しようとする課題】しかしながら、特願平
６−２７５８８１号に係る大口径穴あけ装置および大口
径穴あけ装置に用いられるホールソーでは、穴あけ作業
中に、鉄筋コンクリートの鉄筋が乖離して、その破片が
断面凸字状の切刃４間に挟まって、円筒体の回転の障害
となり、時には、円筒体の回転を止めてしまうきらいが
ある。However, in the large-diameter drilling apparatus and the hole saw used in the large-diameter drilling apparatus according to Japanese Patent Application No. 6-275883, the reinforcing steel of the reinforced concrete is separated during the drilling operation, and fragments thereof are broken. Is caught between the cutting blades 4 having a convex cross section, which hinders the rotation of the cylindrical body, and sometimes stops the rotation of the cylindrical body.
【００１２】それゆえに、この発明の主たる目的は、た
とえば鉄筋コンクリート構造物等のような比較的重量の
大きい被穴あけ体であっても、容易に被穴あけ体を切削
してなるコアーを外部に引き出すことができ、且つ、切
削時に円筒体の回転が止まることなく円滑に切削できる
大口径穴あけ装置および大口径穴あけ装置に用いられる
ホールソーを提供することである。[0012] Therefore, a main object of the present invention is to easily pull out a core formed by cutting a perforated body easily even to a relatively heavy perforated body such as a reinforced concrete structure. It is an object of the present invention to provide a large-diameter hole drilling device and a hole saw used in the large-diameter hole drilling device, which can perform smooth cutting without stopping rotation of a cylindrical body during cutting.
【００１３】[0013]
【課題を解決するための手段】請求項１の大口径穴あけ
装置は、大口径の穴あけ装置であって、剛体からなる直
径略１ｍ以上の円筒体の口縁部の先端に焼結体の切刃が
形成され、円筒体が先端から後端まで同径で且つ中空状
で、先端および後端のいずれも同径の大きさで開口され
てなるホールソーと、ホールソーを回転させる駆動源の
駆動力をホールソーの外周面側から伝達し、ホールソー
を回転させる回転手段と、ホールソーを被穴あけ体に向
けて進退させる、ホールソーの外周面側に形成されたホ
ールソー送り手段とを含む、大口径穴あけ装置であり、
ホールソーは、その円筒体の先端の口縁部に、チップ状
切刃が適宜な間隔で連続して固定されてなり、ホールソ
ーの回転時に、チップ状切刃間に被穴あけ体の破片が挟
まらないように、チップ状切刃間に、円筒体の先端方向
側に傾斜面を有する金具が固定される、大口径穴あけ装
置である。Means for Solving the Problems] large diameter drilling apparatus of claim 1, a drilling device having a large diameter, a straight consisting rigid
Cutting edge of the sintered body formed at the tip of the rim of 径略1m or more cylinders, cylinder body and a hollow shape with the same diameter from the tip to the rear end, none of the previous end and the rear end the same diameter a hole saw comprising an opening the size of, transmits a driving force of a driving source for rotating the hole saw from the outer peripheral surface of the hole saw, a rotation means for rotating the hole saw, advancing and retracting toward the hole saw to be drilling member, hole saw And a hole saw feeding means formed on the outer peripheral surface side of a large diameter hole drilling device,
Hole saw is the rim of the previous end of the cylindrical body, a chip-shaped cutting edge is fixed successively at appropriate intervals, during rotation of the hole saw, debris of the drilling body sandwiched between the chip-cutting edge This is a large-diameter drilling device in which a metal fitting having an inclined surface is fixed between the tip-shaped cutting blades on the tip end side of the cylindrical body.
【００１４】請求項２の大口径穴あけ装置は、円筒体の
回転方向とは逆側の部分において、傾斜面を有する金具
の高さが、円筒体の進行方向から見て、高くなるように
形成される、請求項１に記載の大口径穴あけ装置であ
る。According to a second aspect of the present invention, there is provided a large-diameter hole-piercing device in which a portion having an inclined surface in a portion opposite to a rotation direction of the cylindrical body.
The large-diameter hole drilling device according to claim 1, wherein the height of the large-diameter hole is formed to be higher when viewed from the traveling direction of the cylindrical body .
【００１５】請求項３の大口径穴あけ装置は、大口径の
穴あけ装置であって、剛体からなる直径略１ｍ以上の円
筒体の口縁部の先端に焼結体の切刃が形成され、円筒体
が先端から後端まで同径で且つ中空状で、先端および後
端のいずれも同径の大きさで開口されてなるホールソー
と、ホールソーを回転させる駆動源の駆動力をホールソ
ーの外周面側から伝達し、ホールソーを回転させる回転
手段と、ホールソーを被穴あけ体に向けて進退させる、
ホールソーの外周面側に形成されたホールソー送り手段
とを含む、大口径穴あけ装置であり、ホールソーは、そ
の円筒体の先端の口縁部に、チップ状切刃が適宜な間隔
で連続して固定されてなり、ホールソーの回転時に、チ
ップ状切刃の厚み方向の両端から円筒体の表面にかけて
の隅部に被穴あけ体の破片が挟まらないように、チップ
状切刃と円筒体との間の隅部に、傾斜面が露出するよう
にテーパー金具が固定される、大口径穴あけ装置であ
る。According to a third aspect of the present invention, there is provided a large-diameter boring device, wherein a cutting edge of a sintered body is provided at a tip end of an edge portion of a cylindrical body made of a rigid body having a diameter of about 1 m or more. There is formed a cylindrical body and a hollow shape with the same diameter from the tip to the rear end, and a hole saw none-edge and trailing edge of the formed by openings in the size of the same diameter, the driving force of the driving source for rotating the hole saw The hall so
A rotating means for transmitting the hole saw from the outer peripheral surface side and rotating the hole saw, and moving the hole saw toward the drilled body ,
And a hole saw feeding means formed on the outer peripheral surface of the hole saw, a large-diameter perforation device, a hole saw is its
The rim of the previous end of the cylindrical body, the chip-shaped cutting edge is fixed successively at appropriate intervals, during rotation of the hole saw, the surface of both ends or et Cylindrical body in the thickness direction of the chip-cutting edge as pieces of the drilling member is not pinched in the corner portion of the subjected, in the corner portion between the chip-shaped cutting edge and the circular cylinder, the inclined surface is tapered fitting so as to expose the fixed, large-diameter drilling Device.
【００１６】請求項４の大口径穴あけ装置は、ホールソ
ーの回転時に、チップ状切刃の厚み方向の両端から直径
略１ｍ以上の円筒体の表面にかけての隅部に被穴あけ体
の破片が挟まらないように、チップ状切刃と円筒体との
間の隅部に、傾斜面が露出するようにテーパー金具が固
定される、請求項１に記載の大口径穴あけ装置である。According to a fourth aspect of the present invention, there is provided a large-diameter boring device, wherein when the hole saw is rotated, the diameter of the tip-shaped cutting blade is measured from both ends in the thickness direction.
As pieces of the drilling member is not pinched in the corner portion of the over the surface of substantially 1m or more cylinders, the corner portion between the chip-shaped cutting edge and the circular cylinder, taper fittings as the inclined surface is exposed The large-diameter hole drilling device according to claim 1, wherein?
【００１７】請求項５の大口径穴あけ装置は、大口径の
穴あけ装置であって、剛体からなる直径略１ｍ以上の円
筒体の口縁部の先端に焼結体の切刃が形成され、円筒体
が先端から後端まで同径で且つ中空状で、先端および後
端のいずれも同径の大きさで開口されてなるホールソー
と、ホールソーを回転させる駆動源の駆動力をホールソ
ーの外周面側から伝達し、ホールソーを回転させる回転
手段と、ホールソーを被穴あけ体に向けて進退させる、
ホールソーの外周面側に形成されたホールソー送り手段
とを含む、大口径穴あけ装置であり、ホールソーは、そ
の円筒体の先端の口縁部に、チップ状切刃が適宜な間隔
で連続して固定されてなり、ホールソーの回転時に、チ
ップ状切刃間に被穴あけ体の破片が挟まらないように、
チップ状切刃は、隣のチップ状切刃の間際まで延びる突
出部を含む、大口径穴あけ装置である。A large-diameter drilling device according to claim 5 is a large-diameter drilling device, wherein a cutting edge of a sintered body is provided at a tip end of an edge portion of a cylindrical body having a diameter of about 1 m or more made of a rigid body. There is formed a cylindrical body and a hollow shape with the same diameter from the tip to the rear end, and a hole saw none-edge and trailing edge of the formed by openings in the size of the same diameter, the driving force of the driving source for rotating the hole saw The hall so
A rotating means for transmitting the hole saw from the outer peripheral surface side and rotating the hole saw, and moving the hole saw toward the drilled body ,
And a hole saw feeding means formed on the outer peripheral surface of the hole saw, a large-diameter perforation device, a hole saw is its
The rim of the previous end of the cylindrical body, the chip-shaped cutting edge is fixed successively at appropriate intervals, during rotation of the hole saw, as the debris of the drilling member is not pinched between the chip-cutting edge To
The tip-shaped cutting blade is a large-diameter drilling device including a protruding portion that extends to a point immediately adjacent to the adjacent chip-shaped cutting blade.
【００１８】請求項６のホールソーは、ホールソーを回
転させて大口径の穴あけを行う大口径穴あけ装置に用い
られるホールソーであって、剛体からなる直径略１ｍ以
上の円筒体の口縁部の先端に焼結体の切刃が形成され、
円筒体の先端から後端まで同形で且つ中空状で、先端お
よび後端のいずれも同径の大きさで開口されており、切
刃は、チップ状で、円筒体の先端の口縁部に適宜な間隔
で連続して固定されており、回転時に、チップ状切刃間
に被穴あけ体の破片が挟まらないように、チップ状切刃
間に、円筒体の先端方向側に傾斜面を有する金具が固定
される、ホールソーである。The hole saw of claim 6 is the hole saw to be used in the large-diameter perforation device for performing the drilling large diameter by rotating the hole saw, diameter of about 1m or less comprising a rigid body
A cutting edge of a sintered body is formed at the tip of the rim of the upper cylindrical body,
And a hollow shape in the same shape from the tip of the cylindrical body to the rear end, none of the previous end and the rear end being open at the size of the same diameter, the cutting edge is a chip-shaped, rim of the distal end of the cylindrical body It is continuously fixed at appropriate intervals, and the inclined surface is formed between the chip-shaped cutting blades in the direction of the tip end of the cylindrical body between the chip-shaped cutting blades so that fragments of the drilled body do not get caught between the chip-shaped cutting blades during rotation. Is a hole saw to which a metal fitting having the following is fixed.
【００１９】請求項７のホールソーは、円筒体の回転方
向とは逆側の部分において、傾斜面を有する金具の高さ
が、円筒体の進行方向から見て、高くなるように形成さ
れる、請求項６に記載のホールソーである。In a hole saw according to a seventh aspect of the present invention, the height of the metal fitting having an inclined surface is opposite to the rotation direction of the cylindrical body.
The hole saw according to claim 6, wherein the hole saw is formed to be higher when viewed from the traveling direction of the cylindrical body .
【００２０】請求項８のホールソーは、ホールソーを回
転させて大口径の穴あけを行う大口径穴あけ装置に用い
られるホールソーであって、剛体からなる直径略１ｍ以
上の円筒体の口縁部の先端に焼結体の切刃が形成され、
円筒体の先端から後端まで同形で且つ中空状で、先端お
よび後端のいずれも同径の大きさで開口されており、切
刃は、チップ状で、円筒体の先端の口縁部に適宜な間隔
で連続して固定されており、回転時に、チップ状切刃間
に被穴あけ体の破片が挟まらないように、チップ状切刃
は、隣のチップ状切刃の間際まで延びる突出部を含む、
ホールソーである。The hole saw according to claim 8 is a hole saw used in a large-diameter drilling device for drilling a large-diameter hole by rotating the hole saw, wherein the diameter of the rigid saw is approximately 1 m or less.
A cutting edge of a sintered body is formed at the tip of the rim of the upper cylindrical body,
And a hollow shape in the same shape from the tip of the cylindrical body to the rear end, none of the previous end and the rear end being open at the size of the same diameter, the cutting edge is a chip-shaped, rim of the distal end of the cylindrical body Are continuously fixed at appropriate intervals, and the tip-shaped cutting edge extends to a point immediately adjacent to the adjacent chip-shaped cutting edge so that, during rotation, a piece of the body to be drilled is not sandwiched between the chip-shaped cutting edges. Including protrusions,
It is a hole saw.
【００２１】[0021]
【作用】請求項１の発明によれば、チップ状切刃間に、
傾斜面を有する金具が固定されるので、ホールソーの回
転時に、チップ状切刃間に被穴あけ体の破片が挟まりか
けても、金具の傾斜面で破片が滑り、挟まるおそれがな
い。According to the invention of claim 1, between the tip-shaped cutting blades,
Since bracket having an inclined surface is fixed, when the rotation of the hole saw, even over pieces of the drilling body caught between the chip-shaped cutting edge, slip debris inclined surface of gold member, there is no possibility that the sandwiched.
【００２２】請求項２の発明によれば、ホールソーの回
転時に、被穴あけ体の破片が飛んでくる部分において、
金具の高さが高くなるように形成されるので、チップ状
切刃間に被穴あけ体の破片が挟まりかけても、金具の傾
斜面の高い部分で破片が滑り、挟まるおそれがない。According to the second aspect of the present invention, when the hole saw rotates, at the portion where the fragments of the drilled body fly ,
Since formed so that the height of the gold instrument increases, even over pieces of the drilling body caught between the chip-shaped cutting edge, slip debris with a high portion of the inclined surface of the gold member, there is no possibility that the sandwiched.
【００２３】請求項３の発明によれば、チップ状切刃の
厚み方向の両端から円筒体の表面にかけての隅部に、テ
ーパー金具が固定されるので、ホールソーの回転時に、
チップ状切刃と円筒体との間の隅部に被穴あけ体の破片
が挟まりかけても、テーパー金具の傾斜面で破片が滑
り、挟まるおそれがない。According to the invention of claim 3, in the corner portion of the over the surface of both ends or et Cylindrical body in the thickness direction of the chip-cutting, since the taper fitting is fixed, when the rotation of the hole saw,
Even over pieces of the drilling body caught in the corner portion between the chip-shaped cutting edge and the circular cylindrical body, slip, no risk of being caught debris inclined surface of the tapered fitting.
【００２４】請求項４の発明によれば、チップ状切刃間
に、テーパー金具が固定されるので、ホールソーの回転
時に、チップ状切刃間に被穴あけ体の破片が挟まりかけ
ても、テーパー金具の傾斜面で破片が滑り、挟まるおそ
れがない。また、チップ状切刃の厚み方向の両端から円
筒体の表面にかけての隅部に、テーパー金具が固定され
るので、ホールソーの回転時に、チップ状切刃と円筒体
との間の隅部に被穴あけ体の破片が挟まりかけても、テ
ーパー金具の傾斜面で破片が滑り、挟まるおそれがな
い。According to the fourth aspect of the present invention, the tapered metal fitting is fixed between the tip-shaped cutting blades. Debris slides on the inclined surface of the bracket, and there is no risk of being pinched. Further, the corner portion of the over the surface of both ends or et circle <br/> cylinder in the thickness direction of the chip-cutting, since the taper fitting is fixed, when the rotation of the hole saw, a chip-shaped cutting edge and the circular cylindrical body Even if fragments of the body to be perforated are caught in the corners between them, there is no danger that the fragments will slide on the inclined surface of the taper fitting and become caught.
【００２５】請求項５の発明によれば、チップ状切刃
は、隣のチップ状切刃の間際まで延びる突出部を含むの
で、ホールソーの回転時に、チップ状切刃間に被穴あけ
体の破片が挟まるおそれがない。According to the fifth aspect of the present invention, since the tip-shaped cutting edge includes a protruding portion extending to a point immediately adjacent to the adjacent chip-shaped cutting edge, a fragment of the body to be drilled between the chip-shaped cutting edges when the hole saw is rotated. There is no risk of being pinched.
【００２６】請求項６の発明によれば、チップ状切刃間
に、傾斜面を有する金具が固定されるので、ホールソー
の回転時に、チップ状切刃間に被穴あけ体の破片が挟ま
りかけても、金具の傾斜面で破片が滑り、挟まるおそれ
がない。According to the sixth aspect of the present invention, since the metal fitting having the inclined surface is fixed between the chip-shaped cutting blades, when the hole saw is rotated, the pieces of the drilled body are likely to be caught between the chip-shaped cutting blades. In addition, there is no possibility that the debris slips on the inclined surface of the metal fitting and is caught.
【００２７】請求項７の発明によれば、ホールソーの回
転時に、被穴あけ体の破片が飛んでくる部分において、
金具の高さが高くなるように形成されるので、チップ状
切刃間に被穴あけ体の破片が挟まりかけても、金具の傾
斜面の高い部分で破片が滑り、挟まるおそれがない。According to the seventh aspect of the invention, when the hole saw rotates, at the portion where the fragments of the drilled body fly ,
Since formed so that the height of the gold instrument increases, even over pieces of the drilling body caught between the chip-shaped cutting edge, slip debris with a high portion of the inclined surface of the gold member, there is no possibility that the sandwiched.
【００２８】請求項８の発明によれば、チップ状切刃
は、隣のチップ状切刃の間際まで延びる突出部を含むの
で、ホールソーの回転時に、チップ状切刃間に被穴あけ
体の破片が挟まりかけても、テーパー金具の傾斜面で破
片が滑り、挟まるおそれがない。According to the eighth aspect of the present invention, since the tip-shaped cutting edge includes a protruding portion extending to a point immediately adjacent to the adjacent tip-shaped cutting edge, the fragments of the body to be drilled between the tip-shaped cutting edges when the hole saw is rotated. Even when squeezing occurs, there is no danger that the debris will slide on the inclined surface of the tapered metal fittings and be pinched.
【００２９】[0029]
【発明の効果】請求項１の発明によれば、たとえば鉄筋
コンクリート構造物等のような比較的重量の大きい被穴
あけ体であっても、容易に被穴あけ体を切削してなるコ
アーを外部に引き出すことができる。また、ホールソー
の回転時に、切刃間に被穴あけ体の破片が挟まるおそれ
がないので、被穴あけ体の破片が円筒体の回転の障害と
なるおそれがない。そのため、円筒体の回転が止まるお
それがなく、円筒体の回転がスムーズに行われる。According to the first aspect of the present invention, even if a relatively heavy drilling body such as a reinforced concrete structure, a core formed by easily cutting the drilling body is pulled out. be able to. Further, when the hole saw is rotated, there is no possibility that a piece of the body to be drilled is caught between the cutting blades, so that there is no possibility that the piece of the body to be drilled will obstruct rotation of the cylindrical body. Therefore, the rotation of the cylindrical body does not stop, and the rotation of the cylindrical body is performed smoothly.
【００３０】請求項２の発明によれば、たとえば鉄筋コ
ンクリート構造物等のような比較的重量の大きい被穴あ
け体であっても、容易に被穴あけ体を切削してなるコア
ーを外部に引き出すことができる。また、ホールソーの
回転時に、切刃間に被穴あけ体の破片が挟まるおそれが
ないので、被穴あけ体の破片が円筒体の回転の障害とな
るおそれがない。そのため、円筒体の回転が止まるおそ
れがなく、円筒体の回転がスムーズに行われる。According to the second aspect of the present invention, it is possible to easily pull out a core formed by cutting a perforated body even to a relatively heavy perforated body such as a reinforced concrete structure. it can. Further, when the hole saw is rotated, there is no possibility that a piece of the body to be drilled is caught between the cutting blades, so that there is no possibility that the piece of the body to be drilled will obstruct rotation of the cylindrical body. Therefore, the rotation of the cylindrical body does not stop, and the rotation of the cylindrical body is performed smoothly.
【００３１】請求項３の発明によれば、たとえば鉄筋コ
ンクリート構造物等のような比較的重量の大きい被穴あ
け体であっても、容易に被穴あけ体を切削してなるコア
ーを外部に引き出すことができる。また、ホールソーの
回転時に、切刃と円筒体との間の隅部に被穴あけ体の破
片が挟まるおそれがないので、被穴あけ体の破片が円筒
体の回転の障害となるおそれがない。そのため、円筒体
の回転が止まるおそれがなく、円筒体の回転がスムーズ
に行われる。According to the third aspect of the present invention, it is possible to easily pull out a core formed by cutting a perforated body even to a relatively heavy perforated body such as a reinforced concrete structure. it can. Further, when the hole saw is rotated, there is no possibility that a piece of the body to be drilled is caught in the corner between the cutting blade and the cylindrical body, so that the piece of the body to be drilled does not hinder rotation of the cylindrical body. Therefore, the rotation of the cylindrical body does not stop, and the rotation of the cylindrical body is performed smoothly.
【００３２】請求項４の発明によれば、たとえば鉄筋コ
ンクリート構造物等のような比較的重量の大きい被穴あ
け体であっても、容易に被穴あけ体を切削してなるコア
ーを外部に引き出すことができる。また、ホールソーの
回転時に、切刃間に被穴あけ体の破片が挟まるおそれが
なく、切刃と円筒体との間の隅部に被穴あけ体の破片が
挟まるおそれもないので、被穴あけ体の破片が円筒体の
回転の障害となるおそれがない。そのため、円筒体の回
転が止まるおそれがなく、円筒体の回転がスムーズに行
われる。According to the fourth aspect of the present invention, it is possible to easily pull out a core formed by cutting a perforated body even to a relatively heavy perforated body such as a reinforced concrete structure. it can. Also, when the hole saw is rotated, there is no possibility that a piece of the body to be drilled is caught between the cutting blades, and there is no possibility that a piece of the body to be drilled is caught in the corner between the cutting blade and the cylindrical body. There is no risk that the debris will hinder rotation of the cylinder. Therefore, the rotation of the cylindrical body does not stop, and the rotation of the cylindrical body is performed smoothly.
【００３３】請求項５の発明によれば、たとえば鉄筋コ
ンクリート構造物等のような比較的重量の大きい被穴あ
け体であっても、容易に被穴あけ体を切削してなるコア
ーを外部に引き出すことができる。また、ホールソーの
回転時に、チップ状切刃間に被穴あけ体の破片が挟まる
おそれがないので、被穴あけ体の破片が円筒体の回転の
障害となるおそれがない。そのため、円筒体の回転が止
まるおそれがなく、円筒体の回転がスムーズに行われ
る。According to the fifth aspect of the present invention, it is possible to easily pull out a core formed by cutting a perforated body even to a relatively heavy perforated body such as a reinforced concrete structure. it can. Further, when the hole saw is rotated, there is no possibility that a piece of the body to be drilled is caught between the chip-shaped cutting blades, so that there is no possibility that the piece of the body to be drilled will obstruct rotation of the cylindrical body. Therefore, the rotation of the cylindrical body does not stop, and the rotation of the cylindrical body is performed smoothly.
【００３４】請求項６の発明によれば、たとえば鉄筋コ
ンクリート構造物等のような比較的重量の大きい被穴あ
け体であっても、容易に被穴あけ体を切削してなるコア
ーを外部に引き出すことができる。また、ホールソーの
回転時に、切刃間に被穴あけ体の破片が挟まるおそれが
ないので、被穴あけ体の破片が円筒体の回転の障害とな
るおそれがない。そのため、円筒体の回転が止まるおそ
れがなく、円筒体の回転がスムーズに行われる。According to the sixth aspect of the present invention, it is possible to easily pull out a core formed by cutting a perforated body even to a relatively heavy perforated body such as a reinforced concrete structure. it can. Further, when the hole saw is rotated, there is no possibility that a piece of the body to be drilled is caught between the cutting blades, so that there is no possibility that the piece of the body to be drilled will obstruct rotation of the cylindrical body. Therefore, the rotation of the cylindrical body does not stop, and the rotation of the cylindrical body is performed smoothly.
【００３５】請求項７の発明によれば、たとえば鉄筋コ
ンクリート構造物等のような比較的重量の大きい被穴あ
け体であっても、容易に被穴あけ体を切削してなるコア
ーを外部に引き出すことができる。また、ホールソーの
回転時に、切刃間に被穴あけ体の破片が挟まるおそれが
ないので、被穴あけ体の破片が円筒体の回転の障害とな
るおそれがない。そのため、円筒体の回転が止まるおそ
れがなく、円筒体の回転がスムーズに行われる。According to the seventh aspect of the present invention, it is possible to easily pull out a core formed by cutting a drilled body even to a relatively heavy drilled body such as a reinforced concrete structure. it can. Further, when the hole saw is rotated, there is no possibility that a piece of the body to be drilled is caught between the cutting blades, so that there is no possibility that the piece of the body to be drilled will obstruct rotation of the cylindrical body. Therefore, the rotation of the cylindrical body does not stop, and the rotation of the cylindrical body is performed smoothly.
【００３６】請求項８の発明によれば、たとえば鉄筋コ
ンクリート構造物等のような比較的重量の大きい被穴あ
け体であっても、容易に被穴あけ体を切削してなるコア
ーを外部に引き出すことができる。また、ホールソーの
回転時に、チップ状切刃間に被穴あけ体の破片が挟まる
おそれがないので、被穴あけ体の破片が円筒体の回転の
障害となるおそれがない。そのため、円筒体の回転が止
まるおそれがなく、円筒体の回転がスムーズに行われ
る。According to the eighth aspect of the present invention, it is possible to easily pull out a core formed by cutting a perforated body even to a relatively heavy perforated body such as a reinforced concrete structure. it can. Further, when the hole saw is rotated, there is no possibility that a piece of the body to be drilled is caught between the chip-shaped cutting blades, so that there is no possibility that the piece of the body to be drilled will obstruct rotation of the cylindrical body. Therefore, the rotation of the cylindrical body does not stop, and the rotation of the cylindrical body is performed smoothly.
【００３７】この発明の上述の目的，その他の目的，特
徴および利点は、図面を参照して行う以下の実施例の詳
細な説明から一層明らかとなろう。The above objects, other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.
【００３８】[0038]
【実施例】図１は、この発明の一実施例である大口径穴
あけ装置の概念図であり、図２は、この発明の一実施例
である大口径穴あけ装置の要部を示す斜視図であり、図
３は、図２図示例の正面図であり、図４は、図２図示例
の後部方向から見た側面図であり、図５は、図２図示例
の前部方向から見た側面図であり、図６は図２図示例の
平面図である。FIG. 1 is a conceptual view of a large-diameter drilling apparatus according to one embodiment of the present invention, and FIG. 2 is a perspective view showing a main part of the large-diameter drilling apparatus according to one embodiment of the present invention. FIG. 3 is a front view of the example of FIG. 2, FIG. 4 is a side view of the example of FIG. 2 viewed from the rear, and FIG. 5 is a view of the example of FIG. 2 viewed from the front. FIG. 6 is a side view, and FIG. 6 is a plan view of the example shown in FIG.
【００３９】ホールソー１０は、鋼管からなる直径が１
ｍ以上の大口径の円筒体１２の口縁部１４の先端に、ダ
イヤモンド砥粒を含むチップ状の金属焼結体からなる切
刃１６が固定されてなる。前記円筒体１２は、その切刃
１６が固定された先端から、後端に至るまで同形で、且
つ先端から後端に至るまで中空状に形成され、先端およ
び後端のいずれにも開口部１８ａ，１８ｂが形成されて
いる。切刃１６は、その内縁が、円筒体１２の先端の開
口部１８ａの内側に位置するように固定されている。The hole saw 10 is made of a steel pipe having a diameter of 1
A cutting blade 16 made of a chip-shaped metal sintered body containing diamond abrasive grains is fixed to the tip of an edge portion 14 of a cylindrical body 12 having a large diameter of at least m. The cylindrical body 12 has the same shape from the front end to which the cutting blade 16 is fixed to the rear end, and is formed in a hollow shape from the front end to the rear end. , 18b are formed. The cutting blade 16 is fixed so that its inner edge is located inside the opening 18 a at the tip of the cylindrical body 12.
【００４０】図７に示すように、切刃１６は、断面凸字
状で平面方形のチップ状に形成され、その左右端の凸部
２０には、貫通孔２２が形成され、貫通孔２２にボルト
２４等の固定手段が嵌挿され、円筒体１２の口縁部の先
端に形成された固定穴（図示せず）にボルト２４を螺着
して切刃１６が円筒体１２の先端口縁部に固定されてい
る。As shown in FIG. 7, the cutting blade 16 is formed in a flat rectangular chip shape with a convex cross section, and a through hole 22 is formed in the protrusion 20 at the right and left ends. A fixing means such as a bolt 24 is inserted, and the bolt 24 is screwed into a fixing hole (not shown) formed at the tip of the rim of the cylindrical body 12 so that the cutting blade 16 is moved to the rim of the tip of the cylindrical body 12. Is fixed to the part.
【００４１】切刃１６は、円筒体１２の前端の口縁部
に、適宜な間隔で連続して固定される。そして、図８に
示すように、切刃１６間において、円筒体１２の口縁部
の先端に形成された固定穴（図示せず）に、切刃１６を
固定するのに用いられない他のボルト２５が螺着され
る。そして、円筒体１２の長手方向を外側に向かって、
切刃１６，ボルト２４および他のボルト２５の間隙に、
傾斜面を有するテーパー金具２６が挿入され、固定され
る。この実施例では、テーパー金具２６は、円筒体１２
の回転方向の逆側の部分において、円筒体１２の長手方
向から見た高さが直線的に高くなるように形成される。The cutting blade 16 is fixed to the edge of the front end of the cylindrical body 12 at appropriate intervals. Then, as shown in FIG. 8, between the cutting blades 16, other fixing holes (not shown) formed at the tip of the rim of the cylindrical body 12 are not used for fixing the cutting blades 16. The bolt 25 is screwed. Then, the longitudinal direction of the cylindrical body 12 is directed outward,
In the gap between the cutting blade 16, the bolt 24 and the other bolt 25,
A taper fitting 26 having an inclined surface is inserted and fixed. In this embodiment, the taper fitting 26 is formed by the cylindrical body 12.
Is formed so that the height as viewed from the longitudinal direction of the cylindrical body 12 is linearly increased in a portion on the opposite side of the rotation direction of.
【００４２】円筒体１２の半径方向である円筒体１２の
厚み方向において、切刃１６の厚みは、円筒体１２の厚
みより大きい。そこで、図９に示すように、切刃１６の
厚み方向の両端から、円筒体１２の表面にかけて、底面
が直角三角形の三角柱状のテーパー金具２７が、１つの
切刃１６に対して２つずつ固定される。In the thickness direction of the cylindrical body 12 which is the radial direction of the cylindrical body 12, the thickness of the cutting blade 16 is larger than the thickness of the cylindrical body 12. Therefore, as shown in FIG. 9, from the both ends in the thickness direction of the cutting blade 16 to the surface of the cylindrical body 12, two triangular prism-shaped taper fittings 27 each having a right-angled triangle are provided for each cutting blade 16. Fixed.
【００４３】上記のテーパー金具２６，２７の材料とし
ては、２５Ｃ鉄が用いられるが、ダイヤモンド等を用い
てもよい。As a material of the taper fittings 26 and 27, 25C iron is used, but diamond or the like may be used.
【００４４】このホールソー１０は、大口径穴あけ装置
において正立時支持手段を構成する基体３０の上方で基
体３０の長手方向に水平に、すなわち基体３０と平行で
ホールソー１０の口縁部１４が垂直となるように円筒体
１２を水平方向にして固定されている。The hole saw 10 is horizontally arranged in the longitudinal direction of the base 30 above the base 30 constituting the erecting support means in a large-diameter drilling apparatus, that is, parallel to the base 30 and the edge 14 of the hole saw 10 is vertical. The cylindrical body 12 is fixed with the horizontal direction.
【００４５】正立時支持手段は、設置される面を有する
基体３０と、被穴あけ体に固定される面を有する枠体３
２とを含む。すなわち、基体３０の前端には、アーチ状
の枠体３２が垂直方向に基体３０の前端部分を囲繞する
ように固定されている。そして、ホールソー１０の前端
は、この枠体３２側を向くように枠体３２の内側に固定
されている。The erecting support means comprises a base 30 having a surface to be installed, and a frame 3 having a surface to be fixed to a perforated body.
2 is included. That is, the arch-shaped frame 32 is fixed to the front end of the base 30 so as to vertically surround the front end of the base 30. The front end of the hole saw 10 is fixed inside the frame 32 so as to face the frame 32.
【００４６】一方、ホールソー１０の後端部位は、ホー
ルソー１０を回転させるホールソー回転手段たるホール
ソー回転支持体３４に回転自在に固定されている。On the other hand, the rear end portion of the hole saw 10 is rotatably fixed to a hole saw rotating support 34 as a hole saw rotating means for rotating the hole saw 10.
【００４７】ホールソー回転手段は、基体３０の中央よ
りやや後方に垂直方向に立設されたホールソー回転支持
体３４を含む。ホールソー回転支持体３４は、ホールソ
ー１０を円滑に回転させるための回転用ベアリング３８
およびベアリング受け４０か ら構成される。また、ホー
ルソー回転手段は、駆動源たる駆動モータ４２を含む。
ホールソー回転支持体３４は、ホールソー１０を枠体３
２側につき出して支持するように形成され、ホールソー
１０の後端の開口部１８ｂが開口するようにアーチ状に
形成されている。そして、後述のギア４４が、ホールソ
ー１０の後端の外周面に形成されたフランジ３６に固定
された円環状の回転用ベアリング３８を介して、ホール
ソー回転支持体３４内に形成されたベアリング受け４０
に回転自在に固定されている。ベアリング受け４０は、
ホールソー回転手段を構成するもので、ホールソー回転
支持体３４の中空部内に内装されているが、このベアリ
ング受け４０を内装したホールソー回転支持体３４は、
ホールソー１０を前後進させるホールソー送り手段を介
して基体３０に連結されている。回転用ベアリング３８
後方でホールソー回転手段内には、ホールソー回転手段
たる駆動源たる油圧モータからなる駆動モータ４２が設
けられ、その駆動モータ４２の回転軸にギア４４が連結
され、ギア４４と噛合する歯部４６が回転用ベアリング
３８の外周に形成されている。したがって、駆動モータ
４２を油圧装置（図示せず）により回転させると、ギア
４４およびそれと噛合する歯部４６を介してホールソー
１０が回転する。The hole saw rotating means includes a hole saw rotating support 34 erected vertically slightly behind the center of the base 30 . The hole saw rotating support 34 is provided with a rotating bearing 38 for rotating the hole saw 10 smoothly.
And the bearing receiver 40 that consists of. Also, Ho
Rousseau rotating means includes a drive source serving the drive motor 4 2.
The hole saw rotating support 34 is used to hold the hole saw 10 in the frame 3.
It is formed so as to protrude and support the two sides, and is formed in an arch shape so that the opening 18b at the rear end of the hole saw 10 is opened. A gear 44, which will be described later, is connected to a bearing receiver 40 formed in the hole saw rotation support 34 via an annular rotation bearing 38 fixed to a flange 36 formed on the outer peripheral surface of the rear end of the hole saw 10.
It is fixed rotatably. The bearing receiver 40 is
The hole saw rotating means constitutes a hole saw rotating means, and is housed in the hollow portion of the hole saw rotating support 34.
The hole saw 10 is connected to the base 30 via a hole saw feeding means for moving the hole saw 10 forward and backward. Rotating bearing 38
A drive motor 42 comprising a hydraulic motor as a drive source serving as a hole saw rotating means is provided in the hole saw rotating means at the rear, and a gear 44 is connected to a rotation shaft of the drive motor 42, and a tooth portion 46 meshing with the gear 44 is provided. It is formed on the outer periphery of the rotating bearing 38. Therefore, when the drive motor 42 is rotated by a hydraulic device (not shown), the hole saw 10 rotates via the gear 44 and the teeth 46 meshing therewith.
【００４８】ホールソー１０を水平方向に進退させる送
り手段は、ホールソー回転支持体３４に固定された送り
テーブル４８と、送りテーブル４８を案内するレール体
５０と、レール体５０に沿って送りテーブル４８を案内
し移動させるローラ５２およびガイド用支持ローラ５４
と、送りテーブル４８を進退させる駆動源たるテーブル
送り用油圧シリンダ５６とを含む。The feed means for moving the hole saw 10 in the horizontal direction includes a feed table 48 fixed to the hole saw rotary support 34, a rail 50 for guiding the feed table 48, and a feed table 48 along the rail 50. Roller 52 for guiding and moving and supporting roller 54 for guiding
And a table feed hydraulic cylinder 56 as a drive source for moving the feed table 48 forward and backward.
【００４９】送りテーブル４８は、ホールソー回転支持
体３４の下部に水平方向において移動自在に固定され、
且つホールソー回転支持体３４と連結固定されている。
送りテーブル４８は、平板状で、前記枠体３２の内側縁
より若干外側にでる程度の幅を有し、レール体５０の上
面を前後進するように形成されている。レール体５０
は、基体３０の上面でホールソー１０の前後方向に略沿
って基体３０の前端から後端にわたり形成され、送りテ
ーブル４８の下部には回転自在にローラ５２が形成さ
れ、そのローラ５２がレール体５０の上面を転動して送
りテーブル４８が前後進するように構成されている。送
りテーブル４８の下部には、送りテーブル４８が移動中
に上下に振れたりすることがないように、一対のガイド
用支持ローラ５４が回転自在に固定され、ガイド用支持
ローラ５４は、レール体５０の上面に接するように回転
自在に固定されたガイド用支持ローラ５４ａと、ガイド
用支持ローラ５４ａと対向して、レール体５０の下面に
接するように設けられたガイド用支持ローラ５４ｂとか
らなり、ガイド用支持ローラ５４ｂは、送りテーブル４
８の下面から下方に向かって突き出し設けられた支持腕
５４ｃに回転自在に固定されている。したがって、上下
一対のガイド用支持ローラ５４ａおよび５４ｂによっ
て、レール体５０を挟んで上下の振れを防ぎながら、送
りテーブル４８が前後進する。The feed table 48 is fixed to the lower part of the hole saw rotary support 34 so as to be movable in the horizontal direction.
Further, it is connected and fixed to the hole saw rotating support 34.
The feed table 48 is a flat plate, has a width slightly outside the inner edge of the frame 32, and is formed so as to move forward and backward on the upper surface of the rail body 50. Rail body 50
Is formed from the front end to the rear end of the base 30 substantially along the front and rear direction of the hole saw 10 on the upper surface of the base 30, and a roller 52 is formed rotatably below the feed table 48, and the roller 52 is a rail body 50. The feed table 48 is configured to roll forward and backward by rolling on the upper surface of the feed table 48. A pair of guide support rollers 54 is rotatably fixed below the feed table 48 so that the feed table 48 does not swing up and down during movement. A guide support roller 54a rotatably fixed so as to be in contact with the upper surface of the rail body 50; and a guide support roller 54b provided so as to be in contact with the lower surface of the rail body 50 in opposition to the guide support roller 54a. The guide supporting roller 54b is
8 is rotatably fixed to a support arm 54c which protrudes downward from the lower surface. Accordingly, the feed table 48 moves forward and backward while the vertical movement of the rail body 50 is prevented by the pair of upper and lower guide support rollers 54a and 54b.
【００５０】送りテーブル４８の前後進、すなわちホー
ルソー１０の前後進は、ホールソー送り手段を構成する
テーブル送り用油圧シリンダ５６の作動によって行われ
るように構成されている。すなわち、送りテーブル４８
の前端下面に下方に突き出し設けられたシリンダ軸固定
部５８の後面にテーブル送り用油圧シリンダ５６のロッ
ドの先端が固定され、テーブル送り用油圧シリンダ５６
の後端は、基体３０の後方に突き出し設けられたシリン
ダ固定部６０に固定され、水平方向に設けられている。The forward / backward movement of the feed table 48, that is, the forward / backward movement of the hole saw 10, is configured to be performed by the operation of a table feed hydraulic cylinder 56 constituting the hole saw feed means. That is, the feed table 48
The distal end of the rod of the table feed hydraulic cylinder 56 is fixed to the rear surface of a cylinder shaft fixing portion 58 that protrudes downward from the lower surface of the front end of the table feed hydraulic cylinder 56.
The rear end is fixed to a cylinder fixing portion 60 projecting rearward of the base 30 and is provided in a horizontal direction.
【００５１】基体３０の内側において前部には、前進の
限界を決めるリミットスイッチ６２が形成され、基体３
０の内側において後部には、ホールソー１０の後退の限
界を決めるリミットスイッチ６４が形成されている。At the front of the inside of the base 30, a limit switch 62 for determining the limit of forward movement is formed.
A limit switch 64 for determining the limit of the retraction of the hole saw 10 is formed at the rear inside the zero.
【００５２】枠体３２の内側にはホールソー１０の外周
面を上下左右４箇所において保持するホールソー保持手
段が形成されている。すなわち、このホールソー保持手
段は、枠体３２の上部より下方に向けて突き出し設けら
れたローラ支持腕６６と基体３０の上部より上方に向け
て突き出し設けられたローラ支持腕６８と、ローラ支持
腕６６およびローラ支持腕６８に回転自在に固定された
ローラ７０および７２とからなり、ローラ７０および７
２は上下よりホールソー１０の円筒体１２の外周面に常
時は接合し転動するように構成されている。Inside the frame 32, there are formed hole saw holding means for holding the outer peripheral surface of the hole saw 10 at four positions, up, down, left and right. That is, the hole saw holding means includes a roller support arm 66 protruding downward from the upper portion of the frame 32, a roller support arm 68 protruding upward from the upper portion of the base 30, and a roller support arm 66. And rollers 70 and 72 rotatably fixed to the roller support arm 68.
Numeral 2 is configured to be constantly joined to the outer peripheral surface of the cylindrical body 12 of the hole saw 10 from above and below to roll.
【００５３】そして、このホールソー保持手段たるロー
ラ７０およびローラ７２は、特にホールソー１０が回転
して被穴あけ体に最初に穴開けするときにホールソー６
６が震えることなく正確に被穴あけ体に穴を開け始める
ことができるように形成されたものである。したがっ
て、穴あけ加工が進むと、ホールソー１０の円筒体１２
の外周面より離れるように構成してもよい。The roller 70 and the roller 72, which are the hole saw holding means, are used especially when the hole saw 10 is rotated to make a hole in the body to be drilled for the first time.
6 is formed so as to be able to start drilling a hole in the drilled body accurately without shaking. Therefore, as the drilling process proceeds, the cylindrical body 12 of the hole saw 10
May be configured so as to be separated from the outer peripheral surface.
【００５４】そして、この実施例においては、基体３０
の設置面とホールソー１０の下部との間に比較的距離が
あるので、たとえばコンクリート建造物等のようなもの
で、地面と比較的近い位置にも穴開けをする必要のある
場合においては、正立状態ではホールソー１０の高さ分
穴開けをすることができない。そのために、より低い位
置に穴開けを行なうときに対応するために、倒立状態と
させることができるように構成されている。すなわち、
枠体３２の後部面より基体３０の後部側にかけて倒立時
支持手段である略Ｌ字型の倒立用ガード７６が架け渡さ
れるように形成されている。図３ないし図６において２
点鎖線で示されるように、倒立用ガード７６は、前面か
ら見るとＵ字状に形成され、その前部の垂直方向に垂下
された取付部７６ａにおいて枠体３２の後部側とボルト
により固定され、倒立用ガード７６の後部の垂直部７６
ｂは、基体３０の後部側の左右端においてボルト等によ
り固定されている。したがって、この実施例において
は、１８０度倒立状態においては、倒立支持手段たる倒
立用ガード７６の水平部７６ｃを接地させることによっ
てその全体が支持されるが、たとえば上部より吊り下げ
することも可能となる。In this embodiment, the base 30
Since there is a relatively large distance between the installation surface of the hole saw 10 and the lower part of the hole saw 10, when a hole is required to be drilled at a position relatively close to the ground, for example, in a concrete building, etc. In the upright state, it is not possible to make a hole by the height of the hole saw 10. Therefore, in order to cope with a case where a hole is drilled at a lower position, it is configured to be able to be in an inverted state. That is,
A substantially L-shaped inverted guard 76, which is a support means at the time of inversion, is formed so as to be bridged from the rear surface of the frame 32 to the rear side of the base 30. 3 to FIG.
As shown by the dashed line, the inverted guard 76 is formed in a U-shape when viewed from the front, and is fixed to the rear side of the frame body 32 by bolts at a vertically attached portion 76a at the front thereof. , The vertical portion 76 at the rear of the inverted guard 76
b is fixed by bolts or the like at the left and right ends on the rear side of the base 30. Therefore, in this embodiment, in the 180-degree inverted state, the entirety of the horizontal guard 76c of the inverted guard 76, which is the inverted support means, is supported by grounding. However, for example, the inverted guard 76 can be suspended from above. Become.
【００５５】なお、この実施例においては、被穴あけ体
を切削してなるコアーＡをホールソー１０の後方部より
被穴あけ体の深部に向けて押圧するコアー押し装置８０
が、着脱自在に固定されるように形成されている。次
に、このコアー押し装置８０について、主として図１０
および図１１に基づき説明する。In this embodiment, a core pushing device 80 for pressing a core A obtained by cutting a body to be drilled from a rear portion of the hole saw 10 toward a deep portion of the body to be drilled.
Are formed so as to be detachably fixed. Next, the core pushing device 80 will be described mainly with reference to FIG.
This will be described with reference to FIG.
【００５６】コアー押し装置８０は、ホールソー１０の
後端の開口部１８ｂより後端の位置であって、基体３０
の中央部において垂直方向に立設された左右一対のコア
ー押し装置支持体８２に、着脱自在に固定される。コア
ー押し装置支持体８２は、枠体３２との間に掛け渡され
た補強体８４において前後方向に補強されている。The core pushing device 80 is located at a position behind the opening 18 b at the rear end of the hole saw 10 and
Are detachably fixed to a pair of left and right core pushing device support members 82 which are vertically provided at the center of the device. The core pushing device support 82 is reinforced in the front-rear direction by a reinforcing member 84 bridged between the core pushing device 82 and the frame 32.
【００５７】コアー押し装置８０は、柱状のコアー押し
用フレーム８６の先端にコアー押し用油圧シリンダ８８
が固定され、そのコアー押し用油圧シリンダ８８の軸の
先端にはコアー押し用座体９０が固定され、コアー押し
用フレーム８６の後端下部には、前記コアー押し用フレ
ーム８６と十字状に交差するように固定されたコアー押
しフレーム９２が形成されている。そして、コアー押し
フレーム９２の左右端においてコアー押し装置支持体８
２の固定溝９４に嵌挿し固定されるように形成されてい
る。なお、コアー押しフレーム９２の左右端において、
コアー押し装置支持体８２の外面に形成された固定穴８
２ａに貫挿された固定手段たるボルトによって、コアー
押しフレーム９２をコアー押し装置支持体８２に固定す
るように形成されている。コアー押し用フレーム８６の
後端にはバランスウエイト９８が固定され、たとえばこ
のコアー押し装置８０を吊り上げたときにバランスを保
つことができるように構成されている。そして、基体３
０の内側でリミットスイッチ６２の後側に、コアー押し
装置８０の前進限を決定するリミットスイッチ７４が形
成されている。The core pushing device 80 is provided with a core pushing hydraulic cylinder 88 at the tip of a columnar core pushing frame 86.
A core pushing seat body 90 is fixed to the tip of the shaft of the core pushing hydraulic cylinder 88, and the core pushing frame 86 intersects the core pushing frame 86 in a cross shape at the lower rear end thereof. A fixed core pushing frame 92 is formed. Then, at the left and right ends of the core pushing frame 92, the core pushing device support 8
It is formed so as to be inserted and fixed in the second fixing groove 94. In addition, at the left and right ends of the core pressing frame 92,
Fixing hole 8 formed on the outer surface of core pushing device support 82
The core pushing frame 92 is formed so as to be fixed to the core pushing device support 82 by a bolt as a fixing means inserted through 2a. A balance weight 98 is fixed to the rear end of the core pushing frame 86 so that, for example, when the core pushing device 80 is lifted, the balance can be maintained. And the base 3
A limit switch 74 that determines the limit of forward movement of the core pushing device 80 is formed inside the zero and behind the limit switch 62.
【００５８】また、基体３０の外側面には固定孔１００
が穿設された固定部１０２が突き出し設けられている。
この実施例においては、合計左右８個の固定部１０２が
形成されている。The fixing holes 100 are formed on the outer surface of the base 30.
A fixing portion 102 with a hole is provided so as to protrude.
In this embodiment, a total of eight right and left fixing portions 102 are formed.
【００５９】また、枠体３２の前部には上下左右で４個
の固定部１０４が形成されている。この固定部１０４に
もアンカーを嵌挿するアンカー孔１０６が穿設されてい
る。In the front part of the frame 32, four fixing parts 104 are formed vertically and horizontally. Anchor hole 106 for inserting an anchor is also formed in fixing portion 104.
【００６０】ホールソー１０で穴あけをするとき、ホー
ルソーの冷却効果を高め、切り屑の排除も良好とするた
めに、外側用液ノズル１０８が、枠体３２の内側上方よ
り下方に向けて、また基体３０の上面より下方から上方
に向けて、液を噴射するように４箇所設けられている。
また、基体３０の後方には、左右２箇所において、ホー
ルソー１０の内側に液を噴射する内側用液ノズル１１０
が設けられている。したがって、外側用液ノズル１０８
より噴射された液によって、ホールソー１０の外側が冷
却されるとともに切り屑等の排除を行うことができ、ま
た内側用液ノズル１１０から液を噴射することにより、
ホールソー１０の中空部よりホールソー１０の内側面を
噴射した液によって冷却し切り屑の排除を行うことがで
きる。When drilling with the hole saw 10, in order to enhance the cooling effect of the hole saw and to remove chips efficiently, the outer liquid nozzle 108 is directed downward from the upper inside of the frame 32, and Four portions are provided so as to eject the liquid from below to above from the upper surface of 30.
In addition, behind the base 30, at two positions on the left and right, an inner liquid nozzle 110 for injecting liquid inside the hole saw 10.
Is provided. Therefore, the outer liquid nozzle 108
By the more injected liquid, the outside of the hole saw 10 can be cooled and chips and the like can be eliminated, and by injecting the liquid from the inner liquid nozzle 110,
The inside of the hole saw 10 can be cooled by the liquid sprayed from the hollow portion of the hole saw 10 to remove chips.
【００６１】つぎに、この大口径の穴あけ装置によっ
て、たとえばコンクリート構造物等の被穴あけ体に大口
径の穴を開ける方法について説明する。Next, a method of making a large-diameter hole in a body to be drilled, such as a concrete structure, by using this large-diameter hole making apparatus will be described.
【００６２】まず、この大口径穴あけ装置を被穴あけ体
の前面に載置し、基体３０に形成された固定部１０２の
固定穴１００に適宜なアンカー等の固定手段を貫挿し地
中等に打ち込み固定する。さらに、被穴あけ体に接合さ
れた枠体３２の外側面に突き出し設けられた固定部１０
４のアンカー孔１０６にもアンカーを差し込み、被穴あ
け体に向けてアンカーを打ち込み固定する。First, this large-diameter drilling device is mounted on the front surface of the body to be drilled, and a fixing means such as an anchor is inserted into a fixing hole 100 of the fixing portion 102 formed in the base 30 and is fixed in the ground by driving. I do. Further, a fixing portion 10 protrudingly provided on the outer surface of the frame 32 joined to the perforated body.
The anchor is inserted into the anchor hole 106 of No. 4, and the anchor is driven and fixed toward the drilled body.
【００６３】そして、コアー押し装置８０をコアー押し
装置支持体８２に固定し、コアー押し用座体９０が被穴
あけ体に接するまでコアー押し用油圧シリンダ８８を作
動させて押し出させる。Then, the core pushing device 80 is fixed to the core pushing device support 82, and the core pushing hydraulic cylinder 88 is operated and pushed out until the core pushing seat 90 comes into contact with the perforated body.
【００６４】そして、ローラ７０および７２がホールソ
ー１０の円筒体１２の外周面に接して転動するかどうか
確認し、特に穴開け作業初期においてホールソー１０が
振動することがないように注意する。Then, it is checked whether the rollers 70 and 72 are in contact with the outer peripheral surface of the cylindrical body 12 of the hole saw 10 and rolled. Care is taken so that the hole saw 10 does not vibrate especially at the beginning of the drilling operation.
【００６５】このような準備の後、駆動モータ４２を油
圧源（図示せず）の作動により作動させ、ホールソー１
０を回転させる。そして、テーブル送り用油圧シリンダ
５６を作動させ、徐々にホールソー１０を被穴あけ体に
向けて進行させる。穴あけ作業が進めば、被穴あけ体が
ホールソー１０により穴を開けられ、図１２に示すよう
に、ホールソー１０の円筒体１２の中空部内に被穴あけ
体を切削してなるコアーＡが被穴あけ体の最深部で他の
部分と縁が切れ、ホールソー１０内にコアーＡのみが残
ることになる。この状態でホールソー１０の回転を止
め、コアーＡの外表面にあらかじめ打ち込んでおいたア
ンカーボルト１１２にワイヤーをかけ、円筒体１２内を
滑らしながらコアーＡをホールソー１０の外部に引っ張
りだせば穴あけ作業が完了する。After such preparation, the drive motor 42 is operated by the operation of a hydraulic source (not shown),
Rotate 0. Then, the table feed hydraulic cylinder 56 is operated to gradually move the hole saw 10 toward the drilled body. As the drilling operation proceeds, the drilled body is pierced by the hole saw 10, and as shown in FIG. 12, a core A obtained by cutting the drilled body into the hollow portion of the cylindrical body 12 of the hole saw 10 becomes the drilled body. At the deepest part, the edge is cut off from the other part, and only the core A remains in the hole saw 10. In this state, the rotation of the hole saw 10 is stopped, a wire is wound on the anchor bolt 112 which has been previously driven into the outer surface of the core A, and the core A is pulled out of the hole saw 10 while sliding in the cylindrical body 12, whereby the drilling work is performed. Complete.
【００６６】ホールソー１０に穴があけられる被穴あけ
体としては、通常、鉄筋８０％以下でコンクリート２０
％以上の鉄筋コンクリートが用いられる。したがって、
穴あけ作業中に、被穴あけ体である鉄筋コンクリートの
鉄筋が乖離して、その破片が飛び散ることとなる。しか
し、切刃１６間に他のボルト２５が螺着され、切刃１
６，ボルト２４および他のボルト２５の間に、テーパー
金具２６が固定されるので、鉄筋の破片が切刃１６間に
挟まりかけても、テーパー金具２６の傾斜面で破片が滑
り、挟まるおそれがなく、円筒体１２の回転の障害とな
り、円筒体１２の回転を止めるおそれはない。特に、こ
の実施例では、テーパー金具２６は、円筒体１２の回転
方向とは逆側の部分において、円筒体１２の進行方向か
ら見た高さが直線的に高くなるように形成される。その
ため、円筒体１２の回転時に、鉄筋の破片が飛んでくる
部分において、テーパー金具２６の高さが高くなるよう
に形成されており、鉄筋の破片が切刃１６間に挟まりか
けても、テーパー金具２６の傾斜面の高い部分で破片が
滑り、挟まるおそれがない。As a body to be drilled, a hole in the hole saw 10 is usually 80% or less of reinforcing steel and concrete 20%.
% Or more of reinforced concrete is used. Therefore,
During the drilling operation, the reinforcing steel of the reinforced concrete, which is the body to be drilled, separates, and the fragments are scattered. However, another bolt 25 is screwed between the cutting blades 16 and the cutting blade 1
6, since the taper fitting 26 is fixed between the bolt 24 and the other bolt 25, even if a piece of the reinforcing bar is caught between the cutting blades 16, the piece may slip on the inclined surface of the taper fitting 26 and may be caught. Therefore, the rotation of the cylindrical body 12 is not hindered, and there is no possibility that the rotation of the cylindrical body 12 is stopped. In particular, in this embodiment, the taper fitting 26 is formed so that the height when viewed from the traveling direction of the cylindrical body 12 is linearly increased in a portion opposite to the rotation direction of the cylindrical body 12. Therefore, when the cylindrical body 12 rotates, the height of the tapered metal fitting 26 is formed to be higher at the portion where the rebar fragments fly away. There is no danger that the debris will slide on the high part of the inclined surface of the metal fitting 26 and be pinched.
【００６７】また、円筒体１２の厚み方向において、切
刃１６の厚みは、円筒体１２の厚みより大きいので、切
刃１６と円筒体１２との間の隅部に、鉄筋の破片が挟ま
るおそれがあるが、切刃１６の厚み方向の両端から、円
筒体１２の表面にかけて、テーパー金具２７が固定され
るので、切刃１６と円筒体１２との間の隅部に、鉄筋の
破片が挟まりかけても、テーパー金具２７の傾斜面で破
片が滑り、挟まるおそれがない。Further, in the thickness direction of the cylindrical body 12, the thickness of the cutting blade 16 is larger than the thickness of the cylindrical body 12, so that there is a possibility that a piece of a reinforcing bar is caught in a corner between the cutting blade 16 and the cylindrical body 12. However, since the taper fitting 27 is fixed from both ends in the thickness direction of the cutting blade 16 to the surface of the cylindrical body 12, fragments of the rebar are sandwiched in the corners between the cutting blade 16 and the cylindrical body 12. Even if it is applied, there is no possibility that the debris slips on the inclined surface of the taper fitting 27 and is pinched.
【００６８】従来方法の転用では、ホールソーの内部を
通ってコアーが抜き出せない為、穴の最深部の手前で一
度ホールソーをコンクリート構造物から抜き出し、しか
る後、コアーを何からの方法で折り、マシンを移動させ
てからコアーを取り出すしか方法がないために、作業能
率が著しく低く、且つまた、残った部分を再度穴開けし
なければならない不便さがともなっていたのに対し、こ
の大口径穴あけ装置を用いた穴あけ方法では前記したよ
うに作業が連続的となり、作業能率が非常に向上するこ
ととなる。In the conventional method, since the core cannot be pulled out through the inside of the hole saw, the hole saw is once pulled out of the concrete structure before the deepest part of the hole, and then the core is folded by any method. Since there is no other way but to remove the core after moving the core, the work efficiency is remarkably low and the inconvenience of re-drilling the remaining part is also required. As described above, in the drilling method using, the work becomes continuous, and the work efficiency is greatly improved.
【００６９】また、従来方法の転用では、穴あけ作業中
に、何らかの原因でコアーがその途中で折れたとき、コ
アーがホールソーの円筒体の下部に落ちて円筒体と接触
し、コアーの重量が円筒体にかかり、穴あけ作業をでき
なくなり、ホールソーの回転を停止させ、一旦ホールソ
ーを後退させ、コアーをホールソー内から取り出さなけ
ればならないという懸念があるが、この発明によれば、
円筒体の後方の開口部からコアーを取り出せるため、穴
あけ作業を続行することができる。さらに、図１４
（Ａ）に示すように従来方法の転用では切り込み時の送
りのストロークとコアーの取り出し用のスペースを必要
とするのに比して、この発明によれば、図１４（Ｂ）に
示すようにホールソー１０が被穴あけ体の中に入り込ん
だままコアーＡを取り出せるので、切り込み送りのスト
ロークの２倍以下のスペースでもって、穴あけ作業を行
うことができ、またホールソー１０の円筒体１２の長さ
を短くすることができるので、その回転精度を向上させ
ることができ、装置全体の構造が比較的簡易になり、故
障を少なくすることができる。Also, in the diversion of the conventional method, when the core is broken in the middle of a hole for some reason during the drilling operation, the core falls under the cylindrical body of the hole saw and comes into contact with the cylindrical body, and the weight of the core is reduced. There is a concern that it is necessary to stop the drilling work, stop the rotation of the hole saw, temporarily retract the hole saw, and take out the core from the inside of the hole saw, according to the present invention.
Since the core can be taken out from the opening behind the cylindrical body, the drilling operation can be continued. Further, FIG.
According to the present invention, as shown in FIG. 14B, the diversion of the conventional method requires a feed stroke at the time of cutting and a space for removing the core as shown in FIG. Since the core A can be taken out while the hole saw 10 is inserted into the body to be drilled, the drilling operation can be performed in a space less than twice the stroke of the cutting feed, and the length of the cylindrical body 12 of the hole saw 10 can be reduced. Since the length can be shortened, the rotation accuracy can be improved, the structure of the entire apparatus becomes relatively simple, and failures can be reduced.
【００７０】また、この発明によれば、切刃１６間にテ
ーパー金具２６が固定されるので、切刃１６間に鉄筋の
破片が挟まるおそれがない。さらに、切刃１６と円筒体
１２との間の隅部にテーパー金具２７が固定されるの
で、切刃１６と円筒体１２との間の隅部に鉄筋の破片が
挟まるおそれがない。そのため、この発明によれば、鉄
筋の破片が円筒体１２の回転の障害となるおそれがな
く、円筒体１２の回転が止まるおそれがなく、円筒体１
２の回転がスムーズに行われる。Further, according to the present invention, since the taper fitting 26 is fixed between the cutting blades 16, there is no possibility that a piece of rebar is caught between the cutting blades 16. Further, since the taper fitting 27 is fixed to a corner between the cutting blade 16 and the cylindrical body 12, there is no possibility that a piece of rebar is caught in the corner between the cutting blade 16 and the cylindrical body 12. Therefore, according to the present invention, there is no possibility that the fragments of the rebar will hinder the rotation of the cylindrical body 12, and there is no possibility that the rotation of the cylindrical body 12 stops.
2 is smoothly performed.
【００７１】図１３は他の実施例において、切刃１６を
円筒体１２の前端の口縁部に連続して固定した状態を示
す断面図解図である。この実施例では、特に、切刃１６
は、断面ユ字状で平面方形のチップ状に形成され、その
上部から、隣の切刃１６の間際まで突出部１１４が延び
る。すなわち、図８実施例では、切刃１６は、断面凸字
状で平面方形のチップ状に形成されるのに対し、図１３
実施例では、切刃１６は、断面凸字状で平面方形のチッ
プ状の上部から、円筒体１２の回転方向に向かって形成
される突出部１１４を含む。そして、図８実施例では、
切刃１６間に他のボルト２５が形成され、切刃１６，ボ
ルト２４および他のボルト２５の間隙に、テーパー金具
２６が挿入されるのに対し、図１３実施例では、切刃１
６間に他のボルトが形成されず、テーパー金具も挿入さ
れない。FIG. 13 is an illustrative sectional view showing a state in which the cutting blade 16 is continuously fixed to the front edge of the cylindrical body 12 in another embodiment. In this embodiment, in particular, the cutting blade 16
Is formed in the shape of a flat rectangular chip having a U-shaped cross section, and a protruding portion 114 extends from an upper portion thereof to a point immediately adjacent to the adjacent cutting blade 16. That is, in the embodiment of FIG. 8, the cutting blade 16 is formed in a flat rectangular chip shape with a convex cross section, while FIG.
In the embodiment, the cutting blade 16 includes a protruding portion 114 formed from a chip-shaped upper portion having a convex cross section and a flat rectangular shape toward the rotation direction of the cylindrical body 12. Then, in the embodiment of FIG.
Another bolt 25 is formed between the cutting blades 16, and a taper fitting 26 is inserted into the gap between the cutting blade 16, the bolt 24 and the other bolt 25, whereas in the embodiment shown in FIG.
No other bolts are formed between 6, and no taper fittings are inserted.
【００７２】図１３実施例によれば、切刃１６の上部か
ら、隣の切刃１６の間際まで突出部１１４が延びて、鉄
筋の破片が切刃１６間に挟まるのを防ぐので、切刃１６
間に鉄筋の破片が挟まるおそれがない。そのため、この
実施例によれば、鉄筋の破片が円筒体１２の回転の障害
となるおそれがなく、円筒体１２の回転が止まるおそれ
がなく、円筒体１２の回転がスムーズに行われる。According to the embodiment shown in FIG. 13, the protruding portion 114 extends from the upper part of the cutting blade 16 to a point immediately adjacent to the adjacent cutting blade 16 to prevent fragments of the reinforcing bar from being caught between the cutting blades 16. 16
There is no risk of fragments of rebar being caught between them. Therefore, according to this embodiment, there is no possibility that the fragments of the rebar will hinder the rotation of the cylindrical body 12, and there is no possibility that the rotation of the cylindrical body 12 stops, and the rotation of the cylindrical body 12 is performed smoothly.
【図１】この発明の一実施例である大口径穴あけ装置の
概念図である。FIG. 1 is a conceptual diagram of a large-diameter hole drilling apparatus according to an embodiment of the present invention.
【図２】この発明の一実施例である大口径穴あけ装置の
要部を示す斜視図である。FIG. 2 is a perspective view showing a main part of a large-diameter hole drilling apparatus according to one embodiment of the present invention.
【図３】図２図示例の正面図である。FIG. 3 is a front view of the example shown in FIG. 2;
【図４】図２図示例の後部方向から見た側面図である。FIG. 4 is a side view of the example shown in FIG. 2 as viewed from the rear.
【図５】図２図示例の前部方向から見た側面図である。FIG. 5 is a side view of the example shown in FIG. 2 as viewed from the front.
【図６】図２図示例の平面図である。FIG. 6 is a plan view of the example shown in FIG. 2;
【図７】一実施例であるホールソーの切刃の斜視図であ
る。FIG. 7 is a perspective view of a cutting blade of a hole saw according to one embodiment.
【図８】切刃を円筒体の前端の口縁部に連続して固定し
た状態を示す断面図解図である。FIG. 8 is an illustrative sectional view showing a state in which a cutting blade is continuously fixed to a rim portion of a front end of a cylindrical body.
【図９】切刃の厚み方向の両端から、円筒体の表面にか
けて、テーパー金具が固定される状態を示す断面図解図
である。FIG. 9 is an illustrative sectional view showing a state in which a taper fitting is fixed from both ends in the thickness direction of the cutting blade to the surface of the cylindrical body.
【図１０】図１図示例のコアー押し装置を装填した状態
を示す正面図である。FIG. 10 is a front view showing a state where the core pushing device of the example shown in FIG. 1 is loaded.
【図１１】図１０図示例の後部方向から見た側面図であ
る。11 is a side view of the example shown in FIG. 10 viewed from the rear.
【図１２】穴あけ方法を示す図解図である。FIG. 12 is an illustrative view showing a drilling method;
【図１３】他の実施例において、切刃を円筒体の前端の
口縁部に連続して固定した状態を示す断面図解図であ
る。FIG. 13 is an illustrative sectional view showing a state in which a cutting blade is continuously fixed to a front edge portion of a cylindrical body in another embodiment.
【図１４】従来例とこの発明との対比を示す図解図であ
る。FIG. 14 is an illustrative view showing a comparison between a conventional example and the present invention;
【図１５】従来例において、切刃を円筒体の前端の口縁
部に連続して固定した状態を示す断面図解図である。FIG. 15 is an illustrative sectional view showing a state in which a cutting blade is continuously fixed to a front edge portion of a cylindrical body in a conventional example.
１０ ホールソー １２ 円筒体 １４ 口縁部 １６ 切刃 １８ 開口部 １８ａ 先端開口部 １８ｂ 後端開口部 ２０ 凸部 ２２ 貫通孔 ２４ ボルト ２５ 他のボルト ２６，２７ テーパー金具 ３０ 基体 ３２ 枠体 ３４ ホールソー回転支持体 ３６ フランジ ３８ 回転用ベアリング ４０ ベアリング受け ４２ 駆動モータ ４４ ギア ４６ 歯部 ４８ 送りテーブル ５０ レール体 ５２ ローラ ５４ ガイド用支持ローラ ５４ｃ 支持腕 ５６ テーブル送り用油圧シリンダ ５８ シリンダ軸固定部 ６０ シリンダ固定部 ６２，６４ リミットスイッチ ６６ ローラ支持腕 ６８ ローラ支持腕 ７０，７２ ローラ ７６ 倒立用ガード ８０ コアー押し装置 ８２ コアー押し装置支持体 ８４ 補強体 ８６ コアー押し用フレーム ８８ コアー押し用油圧シリンダ ９０ コアー押し用座体 ９２ コアー押しフレーム ９２ 固定溝 ９８ バランスウエイト １００ 固定孔 １０２ 固定部 １０４ 固定部 １０６ アンカー孔 １０８ 外側用液ノズル １１０ 内側用液ノズル １１４ 突出部 DESCRIPTION OF SYMBOLS 10 Hole saw 12 Cylindrical body 14 Edge 16 Cutting edge 18 Opening 18a Tip opening 18b Rear end opening 20 Convex part 22 Through hole 24 Bolt 25 Other bolts 26, 27 Taper metal fittings 30 Base 32 Frame body 34 Hole saw rotation support Body 36 Flange 38 Rotating bearing 40 Bearing receiver 42 Drive motor 44 Gear 46 Teeth 48 Feed table 50 Rail 52 Roller 54 Guide support roller 54c Support arm 56 Table feed hydraulic cylinder 58 Cylinder shaft fixing part 60 Cylinder fixing part 62 , 64 Limit switch 66 Roller support arm 68 Roller support arm 70, 72 Roller 76 Inverting guard 80 Core pushing device 82 Core pushing device support 84 Reinforcement body 86 Core pushing frame 88 Core pushing hydraulic cylinder 90 Core pushing Seating body 92 Core pushing frame 92 Fixing groove 98 Balance weight 100 Fixing hole 102 Fixing part 104 Fixing part 106 Anchor hole 108 Outer liquid nozzle 110 Inner liquid nozzle 114 Projecting part
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭60−264207（ＪＰ，Ａ) 実開 昭62−162010（ＪＰ，Ｕ) ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-60-264207 (JP, A) JP-A-62-162010 (JP, U)
Claims (8)
焼結体の切刃が形成され、前記円筒体が先端から後端ま
で同径で且つ中空状で、先端および後端のいずれも同径
の大きさで開口されてなるホールソーと、 前記ホールソーを回転させる駆動源の駆動力をホールソ
ーの外周面側から伝達し、前記ホールソーを回転させる
回転手段と、 前記ホールソーを被穴あけ体に向けて進退させる、ホー
ルソーの外周面側に形成されたホールソー送り手段とを
含む、大口径穴あけ装置であり、 前記ホールソーは、その円筒体の先端の口縁部に、チッ
プ状切刃が適宜な間隔で連続して固定されてなり、 前記ホールソーの回転時に、前記チップ状切刃間に被穴
あけ体の破片が挟まらないように、前記チップ状切刃間
に、前記円筒体の先端方向側に傾斜面を有する金具が固
定される、大口径穴あけ装置。1. A drilling device having a large diameter, wherein a cutting edge of a sintered body is formed at a tip of an edge portion of a cylindrical body made of a rigid body having a diameter of about 1 m or more , and said cylindrical body is formed from a tip to a rear end. and a hollow shape with the same diameter, and hole saw none-edge and trailing edge of the formed by openings in the size of the same diameter, the driving force of the driving source for rotating the hole saw Horuso
Rotating means for transmitting the hole saw from the outer peripheral surface thereof and rotating the hole saw; and a hoe for moving the hole saw toward and away from the drilled body.
And a hole saw feeding means formed on the outer peripheral surface of the Rousseau, a large-diameter perforation device, the hole saw is the rim of the previous end of the cylindrical body, a chip-shaped cutting edge is continuous at appropriate intervals When the hole saw is rotated, an inclined surface is formed on the tip end side of the cylindrical body between the tip-shaped cutting blades so that a piece of the drilled body is not caught between the tip-shaped cutting blades. A large-diameter drilling device to which the metal fittings are fixed.
おいて、前記傾斜面を有する金具の高さが、前記円筒体
の進行方向から見て、高くなるように形成される、請求
項１に記載の大口径穴あけ装置。2. A part opposite to the rotation direction of the cylindrical body is formed such that a height of the bracket having the inclined surface is higher when viewed from a traveling direction of the cylindrical body. 2. The large-diameter drilling device according to 1.
焼結体の切刃が形成され、前記円筒体が先端から後端ま
で同径で且つ中空状で、先端および後端のいずれも同径
の大きさで開口されてなるホールソーと、 前記ホールソーを回転させる駆動源の駆動力をホールソ
ーの外周面側から伝達し、前記ホールソーを回転させる
回転手段と、 前記ホールソーを被穴あけ体に向けて進退させる、ホー
ルソーの外周面側に形成されたホールソー送り手段とを
含む、大口径穴あけ装置であり、 前記ホールソーは、その円筒体の先端の口縁部に、チッ
プ状切刃が適宜な間隔で連続して固定されてなり、 前記ホールソーの回転時に、前記チップ状切刃の厚み方
向の両端から前記円筒体の表面にかけての隅部に被穴あ
け体の破片が挟まらないように、前記チップ状切刃と前
記円筒体との間の前記隅部に、傾斜面が露出するように
テーパー金具が固定される、大口径穴あけ装置。3. A drilling device having a large diameter, wherein a cutting edge of a sintered body is formed at a tip of an edge portion of a cylindrical body made of a rigid body having a diameter of about 1 m or more , and said cylindrical body is formed from a tip to a rear end. and a hollow shape with the same diameter, and hole saw none-edge and trailing edge of the formed by openings in the size of the same diameter, the driving force of the driving source for rotating the hole saw Horuso
Rotating means for transmitting the hole saw from the outer peripheral surface thereof and rotating the hole saw; and a hoe for moving the hole saw toward and away from the drilled body.
And a hole saw feeding means formed on the outer peripheral surface of the Rousseau, a large-diameter perforation device, the hole saw is the rim of the previous end of the cylindrical body, a chip-shaped cutting edge is continuous at appropriate intervals is fixed becomes to Te, the upon rotation of the hole saw, as the corners of the over the surface of the pre-Kien cylinder from both ends in the thickness direction of the chip-shaped cutting edge is debris of the drilling member is not pinched, the tip-like Cutting blade and front
The corner between the Kien cylinder, taper fittings are fixed to the inclined surface is exposed, large-diameter drilling device.
状切刃の厚み方向の両端から前記直径略１ｍ以上の円筒
体の表面にかけての隅部に被穴あけ体の破片が挟まらな
いように、前記チップ状切刃と前記円筒体との間の前記
隅部に、傾斜面が露出するようにテーパー金具が固定さ
れる、請求項１に記載の大口径穴あけ装置。4. When the hole saw is rotated, the chip of the drilled body is prevented from being caught in a corner from both ends in the thickness direction of the tip-shaped cutting edge to the surface of the cylindrical body having a diameter of about 1 m or more. the corner portion between the chip-shaped cutting edge and the front Kien cylinder, taper fittings are fixed to the inclined surface is exposed, large-diameter drilling device according to claim 1.
焼結体の切刃が形成され、前記円筒体が先端から後端ま
で同径で且つ中空状で、先端および後端のいずれも同径
の大きさで開口されてなるホールソーと、 前記ホールソーを回転させる駆動源の駆動力をホールソ
ーの外周面側から伝達し、前記ホールソーを回転させる
回転手段と、 前記ホールソーを被穴あけ体に向けて進退させる、ホー
ルソーの外周面側に形成されたホールソー送り手段とを
含む、大口径穴あけ装置であり、 前記ホールソーは、その円筒体の先端の口縁部に、チッ
プ状切刃が適宜な間隔で連続して固定されてなり、 前記ホールソーの回転時に、前記チップ状切刃間に被穴
あけ体の破片が挟まらないように、前記チップ状切刃
は、隣の前記チップ状切刃の間際まで延びる突出部を含
む、大口径穴あけ装置。5. A drilling device having a large diameter, wherein a cutting blade of a sintered body is formed at a front end of a rim portion of a cylindrical body made of a rigid body having a diameter of about 1 m or more , and said cylindrical body is formed from a front end to a rear end. and a hollow shape with the same diameter, and hole saw none-edge and trailing edge of the formed by openings in the size of the same diameter, the driving force of the driving source for rotating the hole saw Horuso
Rotating means for transmitting the hole saw from the outer peripheral surface thereof and rotating the hole saw; and a hoe for moving the hole saw toward and away from the drilled body.
And a hole saw feeding means formed on the outer peripheral surface of the Rousseau, a large-diameter perforation device, the hole saw is the rim of the previous end of the cylindrical body, a chip-shaped cutting edge is continuous at appropriate intervals When the hole saw is rotated, the tip-shaped cutting edge is extended to a point just adjacent to the adjacent tip-shaped cutting edge so that a piece of the drilled body is not caught between the tip-shaped cutting edges. Large-diameter drilling device, including a part.
を行う大口径穴あけ装置に用いられるホールソーであっ
て、剛体からなる直径略１ｍ以上の円筒体の口縁部の先
端に焼結体の切刃が形成され、前記円筒体の先端から後
端まで同形で且つ中空状で、先端および後端のいずれも
同径の大きさで開口されており、 切刃は、チップ状で、円筒体の先端の口縁部に適宜な間
隔で連続して固定されており、 回転時に、前記チップ状切刃間に被穴あけ体の破片が挟
まらないように、前記チップ状切刃間に、前記円筒体の
先端方向側に傾斜面を有する金具が固定される、ホール
ソー。6. A hole saw for use in a large-diameter drilling apparatus for drilling a large-diameter hole by rotating a hole saw, wherein a cut of a sintered body is formed at the tip of the edge of a rigid cylindrical body having a diameter of about 1 m or more. blade is formed, and a hollow shape in the same shape from the tip of the cylindrical body to the rear end, none of the previous end and the rear end being open at the size of the same diameter, the cutting edge is a chip-shaped, cylindrical body It is continuously fixed to the edge of the tip of the tip at an appropriate interval, and between the tip-shaped cutting blades, during rotation, so that debris of the perforated body is not caught between the tip-shaped cutting blades. A hole saw to which a metal fitting having an inclined surface is fixed on a tip direction side of a cylindrical body.
おいて、前記傾斜面を有する金具の高さが、前記円筒体
の進行方向から見て、高くなるように形成される、請求
項６に記載のホールソー。7. The portion of the cylinder having a slope opposite to the rotation direction of the cylinder is formed so that the height of the metal fitting having the inclined surface is higher when viewed from the traveling direction of the cylinder. 6. The hole saw according to 6.
を行う大口径穴あけ装置に用いられるホールソーであっ
て、剛体からなる直径略１ｍ以上の円筒体の口縁部の先
端に焼結体の切刃が形成され、前記円筒体の先端から後
端まで同形で且つ中空状で、先端および後端のいずれも
同径の大きさで開口されており、 切刃は、チップ状で、円筒体の先端の口縁部に適宜な間
隔で連続して固定されており、 回転時に、前記チップ状切刃間に被穴あけ体の破片が挟
まらないように、前記チップ状切刃は、隣の前記チップ
状切刃の間際まで延びる突出部を含む、ホールソー。8. A hole saw used in a large-diameter drilling machine for rotating a hole saw to make a large-diameter hole, wherein a sintered body is cut at a tip end of an edge portion of a rigid cylindrical body having a diameter of about 1 m or more. blade is formed, and a hollow shape in the same shape from the tip of the cylindrical body to the rear end, none of the previous end and the rear end being open at the size of the same diameter, the cutting edge is a chip-shaped, cylindrical body The tip-shaped cutting edge is continuously fixed to the edge of the tip at an appropriate interval at an appropriate interval. A hole saw including a protruding portion extending to near the tip-shaped cutting blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7066791A JP2748306B2 (en) | 1995-02-28 | 1995-02-28 | Large-diameter drilling equipment and hole saws used in large-diameter drilling equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7066791A JP2748306B2 (en) | 1995-02-28 | 1995-02-28 | Large-diameter drilling equipment and hole saws used in large-diameter drilling equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08229932A JPH08229932A (en) | 1996-09-10 |
| JP2748306B2 true JP2748306B2 (en) | 1998-05-06 |
Family
ID=13326047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7066791A Expired - Fee Related JP2748306B2 (en) | 1995-02-28 | 1995-02-28 | Large-diameter drilling equipment and hole saws used in large-diameter drilling equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2748306B2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60264207A (en) * | 1984-06-13 | 1985-12-27 | 杉山工業有限会社 | Drill for concrete product |
| JPS62162010U (en) * | 1986-04-05 | 1987-10-15 |
-
1995
- 1995-02-28 JP JP7066791A patent/JP2748306B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08229932A (en) | 1996-09-10 |
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