JP2007118501A - Boring bit apparatus and boring machine - Google Patents

Boring bit apparatus and boring machine Download PDF

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JP2007118501A
JP2007118501A JP2005316602A JP2005316602A JP2007118501A JP 2007118501 A JP2007118501 A JP 2007118501A JP 2005316602 A JP2005316602 A JP 2005316602A JP 2005316602 A JP2005316602 A JP 2005316602A JP 2007118501 A JP2007118501 A JP 2007118501A
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fixed
flange
blade
cylindrical body
bit device
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Masanao Noda
昌直 野田
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TOSEI KENSETSU KK
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TOSEI KENSETSU KK
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<P>PROBLEM TO BE SOLVED: To bore the surface of a structure of concrete or asphalt without formation of a cylindrical core. <P>SOLUTION: A boring bit apparatus has a cylinder (1) forming an inside cavity (2), a blade (3) fixed to one end of the cylinder (1), a flange (4) arranged at the other end of the cylinder (1) and having an opening (5), two or more blade parts (6) fixed, eccentrically with respect to the center of the cylinder (1), to the inside surface of the flange (4) on different peripheral surfaces, and a rotary shaft (7) fixed to the flange (4). On boring, when the cylinder (1) is rotated while the blade (3) is pressed toward an object material, the blade parts (6) arranged within the cylinder (1) come in contact with the object material, and the blades (6), rotating with the cylinder (1), bore a cylindrical core. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、コンクリート及びアスファルト等の構造物の表面に円筒状の孔を形成する穿孔ビット装置及びこの穿孔ビット装置を使用する穿孔機に関する。   The present invention relates to a drilling bit device that forms a cylindrical hole on the surface of a structure such as concrete and asphalt, and a punching machine that uses this drilling bit device.

走路誘導路灯の空港等での設置工事又はガードレールの設置工事の穿孔作業には、先端にダイヤモンド砥粒を固定した砥材層からなる切削チップを設けたコアボーリング装置を使用して、アスファルト面又はコンクリート面に円筒状の孔が形成される。緊急時に素早い退避が必要となる空港等の特殊な場所では、コアボーリング装置を車両に搭載されたコアボーリング専用の特殊車両が使用され、特殊車両の入りにくい一般道路又は機動性又は高精度を必要とする施工では、手押し型のコアボーリング装置が使用される。コアボーリング装置は、動力装置と、動力装置により回転駆動されるコアビットを構成する円筒状のシャンクと、シャンクの先端部に取り付けられる切削ビットと、駆動装置の放出熱及び切削時のコアビットと被穿孔材との摩擦熱を冷却する冷却装置とを備えている。コアビットの先端の切削チップを被施工面に当接し、コアビットを回転駆動しながら押しつけることで被施工面に目的の孔を形成する。   For drilling work for installation of runway taxiway lights at airports or guardrail installation work, use a core boring device with a cutting tip made of an abrasive layer with diamond abrasive grains fixed at the tip. Cylindrical holes are formed in the concrete surface. In special places such as airports where quick evacuation is required in an emergency, a special vehicle dedicated to core boring with a core boring device mounted on the vehicle is used, and general roads that are difficult to enter special vehicles or mobility or high accuracy are required. In construction, a hand-held core boring device is used. The core boring apparatus includes a power unit, a cylindrical shank that constitutes a core bit that is rotationally driven by the power unit, a cutting bit that is attached to the tip of the shank, heat released from the driving unit, a core bit during cutting, and a drilled hole. And a cooling device for cooling the frictional heat with the material. A cutting tip at the tip of the core bit is brought into contact with the surface to be processed, and a target hole is formed in the surface to be processed by pressing the core bit while rotating.

例えば、下記特許文献１に示されるコアドリルは、図５に示すように、ベース(101)と、ベース(101)より立設され、一側にラック(102)を縦設した支柱(103)と、支柱(103)に昇降可能に装着され、ラック(102)に噛合するピニオン（図示せず）を内部に備えたコアドリル本体(104)と、コアドリル本体(104)に着脱可能に取着されるコアビット(105)と、コアドリル本体(104)上に取着され、コアビット(105)を回転駆動させる減速機付モータ(106)と、ピニオンの軸と一体をなす軸部(108)に着脱可能に取着され、ピニオンを回動操作するハンドル(107)とを備える。コンクリート構造物等に穿孔を行う際に、通常、コンクリート構造物(109)にアンカーボルト等によってベース(101)を固定し、次にハンドル(107)を操作してコアビット(105)をコンクリート構造物等に押付け、続いてモータ(106)を駆動してハンドル(107)を押さえながらコアビット(105)を回転させ、穿孔箇所に冷却水を注水しながら穿孔を行う。   For example, as shown in FIG. 5, a core drill shown in Patent Document 1 below includes a base (101) and a column (103) that is erected from the base (101) and has a rack (102) vertically provided on one side. The core drill body (104) is mounted on the column (103) so as to be movable up and down, and has a pinion (not shown) meshing with the rack (102). The core drill body (104) is detachably attached to the core drill body (104). The core bit (105) is mounted on the core drill body (104), and the motor with a speed reducer (106) that rotates the core bit (105) and the shaft (108) that is integrated with the pinion shaft can be attached and detached. And a handle (107) for rotating the pinion. When drilling a concrete structure, etc., the base (101) is usually fixed to the concrete structure (109) with anchor bolts, etc., and then the handle (107) is operated to attach the core bit (105) to the concrete structure. Then, the motor (106) is driven to rotate the core bit (105) while pressing the handle (107), and drilling is performed while injecting cooling water into the drilled portion.

下記特許文献２は、シャンクの中心位置で軸線方向に設けた先行ビットを備え、先行ビットは、先端にチップを有するリフタシャンクと、リフタシャンクの外周側で、高さ方向の所定位置に設けた嵌合傾斜面と、嵌合傾斜面に可動自在に設けたコアリフタとを備えたコアビットを示す。コアリフタは、被加工物と当接する当接面と、嵌合傾斜面に沿って形成された傾斜面と、軸線方向で一部に所定幅に形成したスリットとを有する落下防止コアリフタを備え、コアビットのシャンクの直径が変わってもコアリフタの構成を変えずに使用でき、操作性にも優れたコアビットが得られる。   The following Patent Document 2 includes a leading bit provided in the axial direction at the center position of the shank. The leading bit is provided at a predetermined position in the height direction on the outer side of the lifter shank having a tip at the tip and the lifter shank. The core bit provided with the fitting inclined surface and the core lifter provided movably on the fitting inclined surface is shown. The core lifter includes a fall prevention core lifter having a contact surface that comes into contact with a workpiece, an inclined surface formed along the fitting inclined surface, and a slit partially formed in the axial direction with a predetermined width. Even if the diameter of the shank changes, it can be used without changing the structure of the core lifter, and a core bit with excellent operability can be obtained.

下記特許文献３は、円筒状のシャンクの先端に被掘削物を穿孔するビットが設けられたコアビットの後端側を密閉するようにして回転駆動装置の回転駆動軸に連接し、コアビットのシャンクに囲まれた内側と外側とを連通させる連通孔を設け、連通孔の外側の開口部に、連通孔を介してコアビットの内側の流体を吸引する集塵装置を取り付けて、穿孔作業中に切粉が外に漏れないように切粉を回収できる穿孔装置を示す。   In Patent Document 3 below, the rear end side of a core bit provided with a bit for drilling an object to be drilled is sealed at the front end of a cylindrical shank, and connected to the rotary drive shaft of the rotary drive device. A communication hole that connects the enclosed inner side and the outer side is provided, and a dust collector that sucks the fluid inside the core bit is attached to the opening outside the communication hole through the communication hole. Shows a drilling device capable of collecting chips so as not to leak out.

特開平９−２６２８２０号公報（図１）JP-A-9-262820 (FIG. 1) 特開平１１−１７９７２０号公報JP-A-11-179720 特開２００３−１１１５公報JP 2003-1115 A

ところで、図５に示すコアドリルを使用して路面等のコンクリート構造物(109)を穿孔すると、円筒状のコアビット(105)の回転により、図６に示すように、円筒状のコア(110)が形成されるため、コアビット(105)を引抜いた後に、コア(110)をドリルにより除去しなければならない。従って、穿孔作業に時間を要すると共に、コアドリル以外のドリルを準備しなければならない。更に、穿孔の際に、コアビット(105)を回転して円筒状のコア(110)の表面がコアビット(105)の上部内面に当接するため、穿孔深さに等しいかそれ以上の長さにコアビット(105)を形成しなければならないため、コアビット(105)が大型化しかつコアビット(105)の取扱も容易でない欠点が生ずる。
そこで、本発明は、コンクリート又はアスファルトの構造物の表面に円筒状のコアを形成せずに構造物を穿孔できる穿孔ビット装置を提供することを目的とする。また、本発明は、短縮された長さを有しかつ所望の深さで穿孔できる穿孔ビット装置を提供することを目的とする。更に、本発明は、穿孔ビット装置を使用する穿孔機を提供することを目的とする。 By the way, when a concrete structure (109) such as a road surface is drilled using the core drill shown in FIG. 5, the cylindrical core (110) is rotated as shown in FIG. 6 by the rotation of the cylindrical core bit (105). In order to be formed, the core (110) must be removed by drilling after the core bit (105) has been withdrawn. Therefore, it takes time for the drilling operation, and a drill other than the core drill must be prepared. Further, when drilling, the core bit (105) is rotated so that the surface of the cylindrical core (110) contacts the upper inner surface of the core bit (105), so that the core bit has a length equal to or greater than the drilling depth. Since (105) must be formed, the core bit (105) becomes large and the core bit (105) is not easy to handle.
SUMMARY OF THE INVENTION An object of the present invention is to provide a drill bit apparatus that can drill a structure without forming a cylindrical core on the surface of the concrete or asphalt structure. Another object of the present invention is to provide a drilling bit device that has a reduced length and can drill at a desired depth. It is a further object of the present invention to provide a drilling machine using a drilling bit device.

本発明の穿孔ビット装置は、内部空洞(2)を形成する円筒体(1)と、円筒体(1)の一端に固定されたブレード(3)と、円筒体(1)の他端に設けられかつ開口部(5)を有するフランジ(4)と、円筒体(1)の中心から偏心してかつ異なる円周上でフランジ(4)の内面に固定された複数の刃体(6)と、フランジ(4)に固定された回転軸(7)とを備える。穿孔の際に、対象物にブレード(3)を押圧しながら、円筒体(1)を回転すると、ブレード(3)が対象物の表面を円筒状に切削しながら、円筒状に形成される溝の深さを増加して、対象物に円筒状のコアを形成する。その後、円筒体(1)内に設けられた刃体(6)が対象物の表面に当接すると、円筒体(1)と共に回転する刃体(6)は、円筒状のコアを掘削する。この場合に、円筒体(1)の中心から偏心してかつ異なる円周上でフランジ(4)の内面に固定される複数の刃体(6)は、円筒状のコアの全てを破砕し、破砕屑は、フランジ(4)の開口部(5)から円筒体(1)の外部に排出される。
本発明の穿孔機は、穿孔ビット装置の回転軸(7)を回転可能に支持するフレーム(20)と、回転軸(7)の上端に作動連結されてフレーム(20)の上部に固定されかつ回転軸(7)を垂直方向に移動させるシリンダ装置(21)と、フレーム(20)に固定されかつ回転軸(7)を垂直方向に移動可能に回転軸(7)を回転させるモータ(22)とを備える。 The perforated bit device of the present invention is provided with a cylindrical body (1) forming an internal cavity (2), a blade (3) fixed to one end of the cylindrical body (1), and the other end of the cylindrical body (1). A flange (4) having an opening (5) and a plurality of blades (6) eccentric from the center of the cylindrical body (1) and fixed to the inner surface of the flange (4) on different circumferences; A rotating shaft (7) fixed to the flange (4). When the cylindrical body (1) is rotated while pressing the blade (3) against the object during drilling, the blade (3) cuts the surface of the object into a cylindrical shape and forms a groove formed in a cylindrical shape. The depth of the is increased to form a cylindrical core on the object. Thereafter, when the blade body (6) provided in the cylindrical body (1) contacts the surface of the object, the blade body (6) rotating together with the cylindrical body (1) excavates the cylindrical core. In this case, the plurality of blade bodies (6) eccentric from the center of the cylindrical body (1) and fixed to the inner surface of the flange (4) on different circumferences crush all the cylindrical cores, The waste is discharged from the opening (5) of the flange (4) to the outside of the cylindrical body (1).
The punching machine of the present invention includes a frame (20) that rotatably supports the rotating shaft (7) of the drilling bit device, and is operatively connected to the upper end of the rotating shaft (7) and fixed to the upper part of the frame (20). A cylinder device (21) that moves the rotating shaft (7) in the vertical direction, and a motor (22) that is fixed to the frame (20) and rotates the rotating shaft (7) so that the rotating shaft (7) can move in the vertical direction With.

穿孔の際に、コアが表面から深部まで刃体により連続的に破砕されると共に、開口部を通じて破砕屑が円筒体の外部に連続的に排出されるので、フランジの内面がコアの表面より深い位置まで、穿孔作業を連続的に行うことができる。また、形成する孔の深さより短い長さの円筒体を使用して、円筒体を延伸できる全ストロークの深さで穿孔することができる。また、シリンダ装置により回転軸を垂直方向に移動すると共に、モータにより回転軸を回転しながら、穿孔作業を行うことができるので、穿孔作業の自動化を達成することができる。   During drilling, the core is continuously crushed from the surface to the deep part by the blade, and crushed debris is continuously discharged to the outside of the cylindrical body through the opening, so that the inner surface of the flange is deeper than the surface of the core. The drilling operation can be carried out continuously up to the position. Further, by using a cylindrical body having a length shorter than the depth of the hole to be formed, the cylindrical body can be drilled with a full stroke depth. In addition, since the drilling operation can be performed while the rotation shaft is moved in the vertical direction by the cylinder device and the rotation shaft is rotated by the motor, automation of the drilling operation can be achieved.

本発明の穿孔ビット装置及び穿孔機の実施の形態を図１〜図４について説明する。
図１及び図２に示すように、本発明の穿孔ビット装置は、ほぼ円筒状の内部空洞(2)を形成する円筒体(1)と、円筒体(1)の一端、即ち下端に固定されたブレード(3)と、円筒体(1)の他端、即ち上端に設けられたフランジ(4)と、円筒体(1)の中心から偏心してかつ異なる円周上でフランジ(4)の内面に固定された５個の刃体(6)と、フランジ(4)の中心に下端が固定された回転軸(7)とを備える。円筒体(1)は、鉄、炭素鋼又はステンレス鋼等の機械的強度の高い金属により形成され、円筒体(1)の下端には、スリット(8)を介して複数のブレード(3)が同一円周上に固定される。図示しないが、各ブレード(3)の底面には、ダイアモンド粒子と金属粒子との焼結体により形成されるチップが設けられる。 An embodiment of a punching bit device and a punching machine according to the present invention will be described with reference to FIGS.
As shown in FIGS. 1 and 2, the perforating bit device of the present invention is fixed to a cylindrical body (1) that forms a substantially cylindrical internal cavity (2), and one end, that is, the lower end of the cylindrical body (1). The blade (3), the flange (4) provided at the other end of the cylindrical body (1), that is, the upper end, and the inner surface of the flange (4) eccentrically from the center of the cylindrical body (1) and on different circumferences. 5 blade bodies (6) fixed to the center, and a rotating shaft (7) having a lower end fixed to the center of the flange (4). The cylindrical body (1) is formed of a metal having high mechanical strength such as iron, carbon steel, or stainless steel, and a plurality of blades (3) are provided at the lower end of the cylindrical body (1) through slits (8). Fixed on the same circumference. Although not shown, a chip formed of a sintered body of diamond particles and metal particles is provided on the bottom surface of each blade (3).

フランジ(4)には、扇形の開口部(5)が形成され、図示の例では、開口部(5)に隣接して舌片(11)がフランジ(4)に固定される。舌片(11)は、円筒体(1)に固定してもよい。内部空洞(2)内に突出する舌片(11)は、傾斜する状態でフランジ(4)の内面に固定され、舌片(11)の下端は、円筒体(1)の回転方向の前方に突出する。複数の刃体(6)は、円周方向及び径方向に互いに離間してフランジ(4)の内面に固定され、各刃体(6)は、溶接等の固着手段によりフランジ(4)に固定されるホルダ(12)と、ホルダ(12)に固定されかつ先端にチップ(14)を有するシャンク(13)とを備える。ホルダ(12)を円筒体(1)に固定してもよい。シャンク(13)の中心軸は、フランジ(4)に対して一定角度(θ)斜めに傾斜する。各刃体(6)は、舌片(11)より下方に突出し、ブレード(3)は、刃体(6)より下方に突出する。回転軸(7)を回転しながら、フランジ(4)を下方に押圧すると、ブレード(3)は、対象物である路面(109)を円筒状に切削し、刃体(6)は、路面(109)の円筒状のコア(110)を掘削して、開口部(5)を通じて内部空洞(2)の外部に切削された路面片を排出する。   The flange (4) is formed with a fan-shaped opening (5). In the illustrated example, the tongue (11) is fixed to the flange (4) adjacent to the opening (5). The tongue piece (11) may be fixed to the cylindrical body (1). The tongue piece (11) protruding into the internal cavity (2) is fixed to the inner surface of the flange (4) in an inclined state, and the lower end of the tongue piece (11) is located in front of the rotating direction of the cylindrical body (1). Protruding. The plurality of blades (6) are spaced apart from each other in the circumferential direction and the radial direction and fixed to the inner surface of the flange (4), and each blade (6) is fixed to the flange (4) by fixing means such as welding. And a shank (13) fixed to the holder (12) and having a tip (14) at the tip. The holder (12) may be fixed to the cylindrical body (1). The central axis of the shank (13) is inclined at an angle (θ) with respect to the flange (4). Each blade (6) protrudes downward from the tongue piece (11), and the blade (3) protrudes downward from the blade (6). When the flange (4) is pressed downward while rotating the rotary shaft (7), the blade (3) cuts the road surface (109), which is the object, into a cylindrical shape, and the blade body (6) The cylindrical core (110) of 109) is excavated, and the road surface pieces cut out of the internal cavity (2) through the opening (5) are discharged.

図３は、本発明の穿孔ビット装置を備えた穿孔機を示す。この穿孔機は、穿孔ビット装置の回転軸(7)を回転可能に支持するフレーム(20)と、回転軸(7)の上端に作動連結されてフレーム(20)の上部に固定されかつ回転軸(7)を垂直方向に移動させるシリンダ装置(21)と、フレーム(20)に固定されかつ回転軸(7)を垂直方向に移動可能に回転軸(7)を回転させるモータ(22)とを備える。シリンダ装置(21)は、フレーム(20)の上部に固定されたシリンダ(23)と、シリンダ(23)内で垂直方向に移動可能に配置されるピストン(24)と、ピストン(24)と回転軸(7)との間に垂直方向に移動可能に配置されるラム(25)と、フレーム(20)に固定されてラム(25)の垂直運動を支持するスリーブ(26)とを備える。油圧、水圧又は空圧を保持する液圧源又は加圧ガス源（図示せず）から供給される圧力流体をシリンダ(23)の上部圧力室に供給すると、回転軸(7)は、ラム(25)と共に下方に移動される。逆に、圧力流体をシリンダ(23)の下部圧力室に供給すると、回転軸(7)は、ラム(25)と共に上方に移動される。   FIG. 3 shows a drilling machine equipped with the drilling bit device of the present invention. This drilling machine has a frame (20) that rotatably supports the rotating shaft (7) of the drilling bit device, and is operatively connected to the upper end of the rotating shaft (7) and fixed to the upper portion of the frame (20). A cylinder device (21) for moving (7) in the vertical direction and a motor (22) fixed to the frame (20) and rotating the rotation shaft (7) so that the rotation shaft (7) can move in the vertical direction. Prepare. The cylinder device (21) includes a cylinder (23) fixed to an upper portion of the frame (20), a piston (24) arranged to be movable in the vertical direction within the cylinder (23), and a rotation with the piston (24). A ram (25) is arranged between the shaft (7) so as to be movable in the vertical direction, and a sleeve (26) fixed to the frame (20) and supporting the vertical movement of the ram (25). When a pressure fluid supplied from a hydraulic pressure source or a pressurized gas source (not shown) that maintains hydraulic pressure, water pressure, or pneumatic pressure is supplied to the upper pressure chamber of the cylinder (23), the rotary shaft (7) 25) is moved downward together. On the contrary, when the pressure fluid is supplied to the lower pressure chamber of the cylinder (23), the rotating shaft (7) is moved upward together with the ram (25).

モータ(22)は、好ましくは、液圧モータを使用するが、空圧モータ又は電動モータを使用することができる。モータ(22)の出力軸(27)の先端にピニオン(28)が設けられ、ピニオン(28)は、回転可能な駆動歯車(30)と同一の軸に固定された歯車(29)と噛み合う。駆動歯車(30)は、回転軸(7)に固定された従動歯車(31)と噛み合うため、従動歯車(31)は、シリンダ装置(21)により垂直方向に移動されると同時に、垂直方向に移動する間に常時駆動歯車(30)に駆動連結される。従って、穿孔ビット装置は、シリンダ装置(21)により路面(109)に対して垂直方向に進退自在に移動されると共に、モータ(22)により回転され、路面(109)に押圧されて路面(109)に連続的に穿孔することができる。また、穿孔の際に形成される孔にダクト(32)を挿入して、円筒体(1)の開口部(5)から円筒体(1)の外部に排出される掘削片(33)を吸引してもよい。   The motor (22) is preferably a hydraulic motor, but a pneumatic motor or an electric motor can be used. A pinion (28) is provided at the tip of the output shaft (27) of the motor (22), and the pinion (28) meshes with a gear (29) fixed to the same shaft as the rotatable drive gear (30). Since the drive gear (30) meshes with the driven gear (31) fixed to the rotating shaft (7), the driven gear (31) is moved in the vertical direction by the cylinder device (21) and simultaneously in the vertical direction. While moving, it is always drivingly connected to the drive gear (30). Accordingly, the perforating bit device is moved by the cylinder device (21) so as to be able to advance and retreat in the vertical direction with respect to the road surface (109), and is rotated by the motor (22) and pressed against the road surface (109). ) Can be continuously drilled. Also, the duct (32) is inserted into the hole formed at the time of drilling, and the excavated piece (33) discharged from the opening (5) of the cylindrical body (1) to the outside of the cylindrical body (1) is sucked. May be.

穿孔の際に、対象物にブレード(3)を押圧しながら、円筒体(1)を回転すると、ブレード(3)が路面(109)の表面を円筒状に切削しながら、円筒状に形成される溝の深さを増加して、対象物に円筒状のコア(110)を形成する。その後、円筒体(1)内に設けられた刃体(6)が路面(109)に当接すると、円筒体(1)と共に回転する刃体(6)は、円筒状のコア(110)を掘削する。この場合に、円筒体(1)の中心から偏心してかつ異なる円周上でフランジ(4)の内面に固定される複数の刃体(6)は、円筒状のコア(110)の全てを破砕し、破砕屑は、舌片(11)により上方に掬われて、フランジ(4)の開口部(5)から円筒体(1)の外部に排出される。   When drilling, when the cylindrical body (1) is rotated while pressing the blade (3) against the object, the blade (3) is formed into a cylindrical shape while cutting the surface of the road surface (109) into a cylindrical shape. The cylindrical core (110) is formed on the object by increasing the depth of the groove. Thereafter, when the blade body (6) provided in the cylindrical body (1) comes into contact with the road surface (109), the blade body (6) rotating together with the cylindrical body (1) has a cylindrical core (110). Excavate. In this case, the plurality of blade bodies (6) that are eccentric from the center of the cylindrical body (1) and are fixed to the inner surface of the flange (4) on different circumferences crush all of the cylindrical core (110). Then, the crushed debris is squeezed upward by the tongue piece (11) and discharged from the opening (5) of the flange (4) to the outside of the cylinder (1).

このように、本発明の穿孔ビット装置では、穿孔の際に、コア(110)を表面から深部まで刃体(6)により連続的に破砕できると共に、開口部(5)を通じて破砕屑が円筒体(1)の外部に連続的に排出されるので、フランジ(4)の内面がコア(110)の表面より深い位置まで、穿孔作業を連続的に行うことができる。また、形成する孔の深さより短い長さの円筒体(1)を使用して、円筒体(1)を延伸できる全ストロークの深さで穿孔することができる。また、シリンダ装置(21)により回転軸(7)を垂直方向に移動すると共に、モータ(22)により回転軸(7)を回転しながら、穿孔作業を行うことができるので、穿孔作業の自動化を達成することができる。   Thus, in the drill bit apparatus of the present invention, the core (110) can be continuously crushed from the surface to the deep part by the blade body (6) during drilling, and the crushed debris is cylindrical through the opening (5). Since it is continuously discharged to the outside of (1), the drilling operation can be continuously performed to a position where the inner surface of the flange (4) is deeper than the surface of the core (110). Further, by using the cylindrical body (1) having a length shorter than the depth of the hole to be formed, the cylindrical body (1) can be perforated at a full stroke depth. In addition, the rotating shaft (7) is moved in the vertical direction by the cylinder device (21) and the drilling operation can be performed while rotating the rotating shaft (7) by the motor (22). Can be achieved.

図４は、内側と外側との間で径方向に離間してフランジ(4)に複数の刃体(6)を固定した本発明の他の実施の形態を示す。各刃体(6)のチップ(14)は、円筒体(1)の回転方向の先端に向かって突出する。図４に示す刃体(6)の取付形態では、路面(109)のコア(110)を均一に破砕できる利点がある。この場合に、摩耗量が多くなる外側の刃体(6)ほど大型に形成してもよい。また、フランジ(4)に固定する刃体(6)の形状、角度、大きさ及び数量並びに固定方法は、当業者が必要に応じて適宜選択することができる。   FIG. 4 shows another embodiment of the present invention in which a plurality of blades (6) are fixed to the flange (4) while being radially spaced between the inner side and the outer side. The tip (14) of each blade (6) protrudes toward the tip in the rotational direction of the cylindrical body (1). 4 has an advantage that the core (110) of the road surface (109) can be uniformly crushed. In this case, the outer blade (6) that increases the amount of wear may be formed larger. Further, the shape, angle, size and quantity of the blade body (6) to be fixed to the flange (4) and the fixing method can be appropriately selected by those skilled in the art as needed.

本発明の前記実施の形態は、種々の変更が可能である。例えば、舌片(11)をフランジ(4)に設けずに、開口部(5)を形成する縁部に傾斜面を形成すれば、路面(109)に向けて押圧するフランジ(4)の反力で開口部(5)を通じて自動的に粉砕片が円筒体(1)の外部に排出される。また、舌片(11)を傾斜させずに、垂直にフランジ(4)に取り付けても円筒体(1)の回転時に粉砕片を開口部(5)の外部に搬送することができる。また、駆動歯車(30)と従動歯車(31)とを種々の公知の構造で駆動連結することができる。例えば、駆動歯車(30)を通常の平歯車により構成し、回転軸(7)と一体回転可能にキー又はスプライン連結により従動歯車(31)を回転軸(7)上で相対的に滑動可能に設けることにより、従動歯車(31)を所定の垂直位置に固定する状態でモータ(22)の回転力を回転軸(7)に伝達することもできる。   Various modifications can be made to the embodiment of the present invention. For example, if the inclined surface is formed on the edge that forms the opening (5) without providing the tongue (11) on the flange (4), the flange (4) that presses against the road surface (109) is counteracted. The crushed pieces are automatically discharged to the outside of the cylindrical body (1) through the opening (5) by force. Further, even if the tongue piece (11) is attached to the flange (4) vertically without being inclined, the crushed piece can be conveyed to the outside of the opening (5) when the cylindrical body (1) is rotated. Further, the drive gear (30) and the driven gear (31) can be drivingly connected with various known structures. For example, the drive gear (30) is configured by a normal spur gear, and the driven gear (31) can be relatively slidable on the rotary shaft (7) by a key or spline connection so that it can rotate integrally with the rotary shaft (7). By providing, the rotational force of the motor (22) can be transmitted to the rotating shaft (7) in a state where the driven gear (31) is fixed at a predetermined vertical position.

本発明の穿孔ビット装置は、路面以外のコンクリート構造物又はアスファルト構造物の水平及び垂直な壁面に穿孔を行う場合にも適用することができる。   The perforation bit device of the present invention can also be applied to a case where perforation is performed on horizontal and vertical wall surfaces of a concrete structure or asphalt structure other than a road surface.

図２に示すＡ−Ａ線に沿う穿孔ビット装置の断面図Sectional drawing of the punching bit apparatus along the AA line shown in FIG. 本発明による穿孔ビット装置の底面図Bottom view of a drilling bit device according to the invention 穿孔ビット装置を使用する穿孔機の側面図Side view of a drilling machine using a drilling bit device 本発明の穿孔ビット装置の他の実施の形態を示す底面図The bottom view which shows other embodiment of the punching bit apparatus of this invention. 従来のコアドリルを示す側面図Side view showing a conventional core drill 図５に示すコアドリルのコアビットにより穿孔する状態を示す断面図Sectional drawing which shows the state drilled with the core bit of the core drill shown in FIG.

符号の説明Explanation of symbols

(1)・・円筒体、 (2)・・内部空洞、 (3)・・ブレード、 (4)・・フランジ、 (5)・・開口部、 (6)・・刃体、 (7)・・回転軸、 (11)・・舌片、 (12)・・ホルダ、 (13)・・シャンク、 (14)・・チップ、 (20)・・フレーム、 (21)・・シリンダ装置、 (22)・・モータ、 (32)・・ダクト、   (1) ・ ・ Cylinder, (2) ・ Internal cavity, (3) ・ Blade, (4) ・ Flange, (5) ・ ・ Opening, (6) ・ ・ Blade, (7) ・・ Rotary shaft, (11) ・ ・ Tangular piece, (12) ・ ・ Holder, (13) ・ ・ Shank, (14) ・ ・ Tip, (20) ・ ・ Frame, (21) ・ ・ Cylinder device, (22 ) ・ ・ Motor, (32) ・ ・ Duct,

Claims (10)

内部空洞を形成する円筒体と、円筒体の一端に固定されたブレードと、円筒体の他端に設けられかつ開口部を有するフランジと、円筒体の中心から偏心してかつ異なる円周上でフランジの内面に固定された複数の刃体と、フランジの中心に固定された回転軸とを備えることを特徴とする穿孔ビット装置。   A cylindrical body forming an internal cavity, a blade fixed to one end of the cylindrical body, a flange provided at the other end of the cylindrical body and having an opening, and a flange that is eccentric from the center of the cylindrical body and on a different circumference A perforating bit device comprising: a plurality of blades fixed to the inner surface of the blade, and a rotating shaft fixed to the center of the flange. 内部空洞内に突出する舌片を開口部に隣接してフランジ又は円筒体に固定した請求項１に記載の穿孔ビット装置。   The perforated bit device according to claim 1, wherein a tongue piece protruding into the internal cavity is fixed to a flange or a cylindrical body adjacent to the opening. 傾斜する状態でフランジの内面に舌片を固定し、円筒体の回転方向の前方に舌片の下端を突出させる請求項２に記載の穿孔ビット装置。   The perforated bit device according to claim 2, wherein the tongue piece is fixed to the inner surface of the flange in an inclined state, and the lower end of the tongue piece protrudes forward in the rotational direction of the cylindrical body. 円周方向及び径方向に互いに離間してフランジに複数の刃体を固定した請求項２又は３に記載の穿孔ビット装置。   The perforation bit device according to claim 2 or 3, wherein a plurality of blade bodies are fixed to the flange so as to be spaced apart from each other in the circumferential direction and the radial direction. 各刃体は、フランジ又は円筒体に固定されたホルダと、ホルダに固定されかつ先端にチップを有するシャンクとを備えた請求項１〜４の何れか１項に記載の穿孔ビット装置。   5. The perforating bit device according to claim 1, wherein each blade includes a holder fixed to a flange or a cylindrical body, and a shank fixed to the holder and having a tip at a tip. 回転軸を回転しながら、フランジを下方に押圧すると、ブレードは、路面を円筒状に切削し、刃体は、路面の円筒状のコアを掘削して、開口部を通じて内部空洞の外部に切削された路面片を排出する請求項１〜５に記載の穿孔ビット装置。   When the flange is pressed downward while rotating the rotating shaft, the blade cuts the road surface into a cylindrical shape, and the blade body is cut out of the internal cavity through the opening by excavating the cylindrical core of the road surface. The perforated bit device according to claim 1, wherein the perforated bit piece is discharged. 各刃体は、舌片より下方に突出し、ブレードは、刃体より下方に突出する請求項２〜６の何れか１項に記載の穿孔ビット装置。   The perforating bit device according to any one of claims 2 to 6, wherein each blade body protrudes downward from the tongue piece, and the blade protrudes downward from the blade body. シャンクの中心軸は、フランジに対して一定角度斜めに傾斜する請求項５に記載の穿孔ビット装置。   6. The drill bit device according to claim 5, wherein the central axis of the shank is inclined at an angle with respect to the flange. 請求項１〜５に記載の穿孔ビット装置の回転軸を回転可能に支持するフレームと、回転軸の上端に作動連結されてフレームの上部に固定されかつ回転軸を垂直方向に移動させるシリンダ装置と、フレームに固定されかつ回転軸を垂直方向に移動可能に回転軸を回転させるモータとを備えたことを特徴とする穿孔機。   A frame that rotatably supports the rotating shaft of the drilling bit device according to claim 1, and a cylinder device that is operatively connected to an upper end of the rotating shaft and is fixed to an upper portion of the frame and moves the rotating shaft in a vertical direction. And a motor for rotating the rotating shaft so as to be fixed to the frame and movable in the vertical direction. 円筒体の開口部から円筒体の外部に排出される路面片を吸引するダクトを設けた請求項９に記載の穿孔機。   The drilling machine according to claim 9, further comprising a duct for sucking a road surface piece discharged from the opening of the cylindrical body to the outside of the cylindrical body.
JP2005316602A 2005-10-31 2005-10-31 Boring bit apparatus and boring machine Pending JP2007118501A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010069791A (en) * 2008-09-19 2010-04-02 Shibuya:Kk Auxiliary attachment for discharging cuttings
US8770900B1 (en) * 2013-05-07 2014-07-08 Harold F Schmidt Planing tool for pilings

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Publication number Priority date Publication date Assignee Title
JPS5230083Y2 (en) * 1973-05-30 1977-07-09
JPS63134782A (en) * 1986-09-11 1988-06-07 イーストマン　クリステンセン　カンパニー Compact rotary drill bit equipped with large cutter supplying water stream having directionality to each cutter
JPH0278311U (en) * 1988-12-06 1990-06-15
JPH08132432A (en) * 1994-11-09 1996-05-28 Kyowa Seisakusho:Kk Boring working-machine for lithic material
JPH11179720A (en) * 1997-12-18 1999-07-06 Goei Seisakusho:Kk Core bit equipped with fall-preventing core lifter
JP2001341123A (en) * 2000-06-01 2001-12-11 Mitsubishi Materials Corp Boring device
JP2004268434A (en) * 2003-03-10 2004-09-30 Max Co Ltd Concrete core drill

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5230083Y2 (en) * 1973-05-30 1977-07-09
JPS63134782A (en) * 1986-09-11 1988-06-07 イーストマン　クリステンセン　カンパニー Compact rotary drill bit equipped with large cutter supplying water stream having directionality to each cutter
JPH0278311U (en) * 1988-12-06 1990-06-15
JPH08132432A (en) * 1994-11-09 1996-05-28 Kyowa Seisakusho:Kk Boring working-machine for lithic material
JPH11179720A (en) * 1997-12-18 1999-07-06 Goei Seisakusho:Kk Core bit equipped with fall-preventing core lifter
JP2001341123A (en) * 2000-06-01 2001-12-11 Mitsubishi Materials Corp Boring device
JP2004268434A (en) * 2003-03-10 2004-09-30 Max Co Ltd Concrete core drill

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010069791A (en) * 2008-09-19 2010-04-02 Shibuya:Kk Auxiliary attachment for discharging cuttings
US8770900B1 (en) * 2013-05-07 2014-07-08 Harold F Schmidt Planing tool for pilings

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