JP3150467B2 - Support shaft holder for cylindrical bit - Google Patents
Support shaft holder for cylindrical bitInfo
- Publication number
- JP3150467B2 JP3150467B2 JP36040792A JP36040792A JP3150467B2 JP 3150467 B2 JP3150467 B2 JP 3150467B2 JP 36040792 A JP36040792 A JP 36040792A JP 36040792 A JP36040792 A JP 36040792A JP 3150467 B2 JP3150467 B2 JP 3150467B2
- Authority
- JP
- Japan
- Prior art keywords
- support shaft
- cut
- cylindrical
- base
- cylindrical bit
- 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 - Lifetime
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)
- Road Repair (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、舗装路面その他の被切
断表面上に垂設された支持軸に円筒状ビットを回転可能
且つ昇降可能に設けると共に被切断表面を円筒状ビット
により円形に切断するに際して、該支持軸下端を安定に
保持するための円筒状ビットの支持軸保持器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cylindrical shaft which is rotatably and vertically movable on a support shaft suspended on a pavement road or another surface to be cut, and the surface to be cut is cut into a circular shape by the cylindrical bit. The present invention relates to a cylindrical bit support shaft retainer for stably holding the lower end of the support shaft.
【０００２】[0002]
【従来の技術】特公昭６１−３３９３８号公報及び特公
昭６１−２５８４４号公報にはマンホール等の道路占用
物周囲の舗装路面を円形に切断すると共にドーナツ形状
に舗装する工法が開示され、特公昭６１−５２２８３号
公報及び実公平２−２６９６９号公報には前記工法にお
ける円形切断に好適に使用できる円筒状ビットを備えた
路面円形切断機が開示されるが、それらの円形切断機で
は、被切断表面上に垂設された支持軸に円筒状ビットを
回転可能且つ昇降可能に設けると共に被切断表面を円筒
状ビットにより円形に切断するようにした構造が採用さ
れる。2. Description of the Related Art JP-B-61-33938 and JP-B-61-25844 disclose a method of cutting a paved road surface around a road occupation material such as a manhole into a circular shape and paving it in a donut shape. Japanese Patent Application Laid-Open Nos. 61-52283 and 2-26969 disclose a road surface circular cutting machine having a cylindrical bit which can be suitably used for circular cutting in the above-mentioned method. A structure is employed in which a cylindrical bit is provided rotatably and vertically movable on a support shaft suspended from the surface, and the surface to be cut is cut into a circular shape by the cylindrical bit.
【０００３】前記構造の円形切断機は、非回転の支持軸
上に円筒状ビットを設けたことから、マンホール周囲の
舗装路面を円形に切断する場合のように大口径の円形切
断でも安定に施工できるものであるが、そのためには該
支持軸を被切断表面上に不動状態に安定に垂設する必要
があり、重機等で上方を固定されて垂下させられた支持
軸をその下端において安定に固定保持することが重要と
なる。この点に関して、マンホール枠周囲の舗装路面を
円形に切断する場合においてマンホール蓋の中心に円筒
状溝等があるときは、特公昭６１−５２２８３号公報に
も開示されるように該円筒状溝を前記支持軸の受け体と
して好適に利用できるが、そのような受け体が用意され
ていない切断条件下では前記支持軸の安定な垂設に困難
を来すことになる。[0003] The circular cutting machine having the above structure is provided with a cylindrical bit on a non-rotating support shaft, so that even a large diameter circular cutting such as a case of cutting a paved road surface around a manhole into a circle can be stably executed. Although it is possible to do so, it is necessary to stably suspend the support shaft on the surface to be cut in an immovable state, and to stably suspend the support shaft fixed at the upper end by a heavy machine or the like at the lower end thereof. It is important to keep it fixed. In this regard, when a pavement road surface around a manhole frame is cut in a circular shape and there is a cylindrical groove or the like at the center of the manhole cover, the cylindrical groove is formed as disclosed in Japanese Patent Publication No. 61-52283. Although it can be suitably used as a support for the support shaft, it will be difficult to stably drop the support shaft under cutting conditions where such a support is not prepared.
【０００４】[0004]
【発明が解決しようとする課題】本発明の課題は、被切
断表面上に垂設された支持軸に円筒状ビットを回転可能
且つ昇降可能に設けると共に被切断表面を円筒状ビット
により円形に切断するに際して、該支持軸下端を安定に
保持できる円筒状ビットの支持軸保持器を提供すること
にある。SUMMARY OF THE INVENTION It is an object of the present invention to provide a rotatable and vertically movable cylindrical bit on a support shaft suspended from a surface to be cut and cut the surface to be cut into a circular shape by the cylindrical bit. It is another object of the present invention to provide a cylindrical bit support shaft retainer capable of stably holding the lower end of the support shaft.
【０００５】[0005]
【課題を解決するための手段】即ち、本発明に係る円筒
状ビットの支持軸保持器は、被切断表面上に垂設された
支持軸に円筒状ビットを回転可能且つ昇降可能に設ける
と共に被切断表面を円筒状ビットにより円形に切断する
に際して該支持軸下端を保持するものであり、被切断表
面上の仮想切断円内に不動状態に設置される基台と、基
台における前記仮想切断円中心上に支持軸下端と係合可
能に設けられた受け体とからなるものである。In other words, a support shaft retainer for a cylindrical bit according to the present invention is provided with a cylindrical bit rotatably and vertically movable on a support shaft suspended from a surface to be cut. A base, which holds the lower end of the support shaft when the cutting surface is cut into a circle by the cylindrical bit, and is fixedly installed in a virtual cutting circle on the surface to be cut, and the virtual cutting circle in the base. And a receiving body provided on the center so as to be engageable with the lower end of the support shaft.
【０００６】前記において、基台が円形であり、その中
心に受け体が設けられたものでもよく、また受け体が支
持軸下端の嵌入可能な筒体からなるものでもよい。ま
た、前記受け体には、被切断表面上への基台の設置に際
して受け体が仮想切断円中心上に正しく配置されるよう
に、基台を貫通する見当孔が設けられることが好まし
い。基台を被切断表面上に不動状態に配置する方法とし
て、種々の取付具や締結具の使用、例えばボルト・ナッ
ト等による螺合、ピンやアンカー等の打設等による以外
に磁気力や吸引力等を利用することもできる。マンホー
ル周囲の舗装路面を円形に切断するために基台をマンホ
ール蓋上に設置する場合は、マンホール蓋に別の目的で
穿設された孔を利用して基台をボルトやピン等で移動不
能に固定してもよい。摩擦力を利用するものとして、例
えば、基台裏面に、被切断表面上の仮想切断円内側部分
との間で大きな滑り摩擦係数を有するゴム材その他の滑
り止め材を設けることもできる。[0006] In the above, the base may be circular and a receiving body may be provided at the center thereof, or the receiving body may be a cylindrical body into which the lower end of the support shaft can be fitted. Further, it is preferable that the receiving body is provided with a registration hole penetrating the base so that the receiving body is correctly arranged on the center of the virtual cutting circle when the base is set on the surface to be cut. The method of immovably placing the base on the surface to be cut includes not only the use of various fixtures and fasteners, such as screwing with bolts and nuts, but also the driving of pins and anchors, etc. You can also use force. When the base is installed on the manhole cover to cut the paved road surface around the manhole in a circular shape, the base cannot be moved with bolts, pins, etc. using holes drilled for other purposes in the manhole cover May be fixed. For example, a rubber material or another non-slip material having a large coefficient of sliding friction with the inside of the virtual cutting circle on the surface to be cut can be provided on the back surface of the base as a device utilizing the frictional force.
【０００７】[0007]
【作用】前記構成の支持軸保持器の使用に際して、舗装
路面等の被切断表面上に、基台をその受け体が仮想切断
円中心上に配置されるように不動状態に設置し、円形切
断機の支持軸を下端において前記受け体と係合させるこ
とにより安定に垂設し、該支持軸上に設けた円筒状ビッ
トを回転させつつ下降させて被切断表面を円形に切断す
る。When the support shaft retainer having the above configuration is used, the base is placed on a surface to be cut such as a pavement road surface so as to be stationary so that its receiving body is arranged at the center of the virtual cutting circle. The support shaft of the machine is stably suspended by engaging with the receiving body at the lower end, and the cylindrical bit provided on the support shaft is lowered while rotating to cut the surface to be cut into a circle.
【０００８】なお、マンホール周囲の舗装路面を円形に
切断する場合においてマンホール蓋の中心に前記受け体
として利用可能な円筒状溝等がないときは、該マンホー
ル蓋上に基台を不動状態に配置すればよい。In the case where the pavement surface around the manhole is cut into a circle, if there is no cylindrical groove or the like that can be used as the receiving body at the center of the manhole cover, the base is placed on the manhole cover in a stationary state. do it.
【０００９】[0009]
【実施例】図１は本発明の実施例に係る円筒状ビットの
支持軸保持器の断面図である。同図において、円形鉄板
からなる基台１表面にそれと同心状に円筒形の受け体２
が突設され、受け体２には下細り状係合孔３及びその下
方に連なる見当孔４が基台１を貫通するように穿設され
る。また、基台１裏面に前記見当孔４部分を除いてゴム
製の滑り止め材５が貼着される。1 is a cross-sectional view of a cylindrical bit support shaft retainer according to an embodiment of the present invention. In the figure, a cylindrical receiving body 2 is formed concentrically on the surface of a base 1 made of a circular iron plate.
The receiving body 2 is provided with a lower narrow engagement hole 3 and a registration hole 4 extending below the lower engagement hole 3 so as to penetrate the base 1. A rubber anti-slip material 5 is attached to the back surface of the base 1 except for the register holes 4.
【００１０】被切断表面としてのマンホール周囲の舗装
路面６を円形に切断するに際して、前記基台１は、見当
孔４からマンホール蓋７中心が中央に透視されるように
調節されつつマンホール蓋７上に設置され、それにより
受け体２は仮想切断円中心であるマンホール蓋７中心上
に正しく配置されたことが確認される。When cutting the pavement road surface 6 around the manhole as a surface to be cut into a circle, the base 1 is adjusted on the manhole cover 7 so that the center of the manhole cover 7 can be seen through the center from the register hole 4. , Whereby it is confirmed that the receiver 2 is correctly arranged on the center of the manhole cover 7 which is the center of the virtual cutting circle.
【００１１】円形切断機の支持軸８が、その下細り状下
端において受け体２の係合孔３に嵌入されつつ保持され
た状態で垂設され、前記基台１より径の大きな円筒状ビ
ット９がスリーブ１０を介して支持軸８に回転及び昇降
自在に設けられ、該スリーブ１０上には従動歯車１１が
設けられると共に従動歯車１１に原動歯車１２が歯合さ
れ、原動歯車１２にモータを含む回転駆動装置１３の出
力軸が連結される。回転駆動装置１３の出力回転は、原
動歯車１２、従動歯車１１及びスリーブ１０を順次介し
て円筒状ビット９に伝達され、該円筒状ビット９が支持
軸８の回りに回転させられると共に昇降装置（図示を省
略する）により回転駆動装置１３等と一体に支持軸８に
沿って昇降させられ、その下降時に下端縁のダイヤモン
ド刃先によりマンホール周囲の舗装路面６が円形に切断
される。A cylindrical shaft having a diameter larger than that of the base 1 is supported by a support shaft 8 of the circular cutting machine which is vertically suspended while being fitted and held in the engagement hole 3 of the receiving body 2 at the lower end thereof. 9 is provided on the support shaft 8 via a sleeve 10 so as to be rotatable and vertically movable. A driven gear 11 is provided on the sleeve 10, and a driven gear 12 is meshed with the driven gear 11. The output shaft of the rotary drive device 13 is connected. The output rotation of the rotary drive device 13 is transmitted to the cylindrical bit 9 via the driving gear 12, the driven gear 11, and the sleeve 10 in order, and the cylindrical bit 9 is rotated around the support shaft 8 and the lifting device ( (Not shown) so as to move up and down along the support shaft 8 integrally with the rotary drive device 13 and the like. At the time of the lowering, the pavement road surface 6 around the manhole is cut into a circle by the diamond cutting edge at the lower edge.
【００１２】[0012]
【発明の効果】本発明に係る円筒状ビットの支持軸保持
器は以上のように構成されるので、被切断表面上に垂設
された支持軸に円筒状ビットを回転可能且つ昇降可能に
設けると共に被切断表面を円筒状ビットにより円形に切
断するに際して、該支持軸下端を安定に保持することが
でき、大口径の円形切断を可能にする。As described above, the cylindrical shaft supporting shaft retainer according to the present invention is configured as described above, so that the cylindrical bit is rotatably and vertically movable on the supporting shaft suspended from the surface to be cut. At the same time, when the surface to be cut is cut into a circle by the cylindrical bit, the lower end of the support shaft can be stably held, and a large-diameter circular cut is made possible.
【図１】本発明の実施例に係る円筒状ビットの支持軸保
持器の断面図である。FIG. 1 is a sectional view of a support shaft retainer of a cylindrical bit according to an embodiment of the present invention.
１ 基台 ２ 受け体 ６ 舗装路面 ８ 支持軸 ９ 円筒状ビット DESCRIPTION OF SYMBOLS 1 Base 2 Receiver 6 Paved road surface 8 Support shaft 9 Cylindrical bit
Claims (5)
状ビットを回転可能且つ昇降可能に設けると共に被切断
表面を円筒状ビットにより円形に切断するに際して該支
持軸下端を保持するものであり、被切断表面上の仮想切
断円内に不動状態に設置される基台と、基台における前
記仮想切断円中心上に支持軸下端と係合可能に設けられ
た受け体とからなる円筒状ビットの支持軸保持器。A cylindrical shaft is rotatably and vertically movable provided on a support shaft suspended from a surface to be cut, and a lower end of the support shaft is held when the surface to be cut is cut into a circle by the cylindrical bit. A cylinder comprising a base fixedly installed in a virtual cutting circle on the surface to be cut, and a receiving body provided at the center of the virtual cutting circle on the base so as to be engageable with a lower end of a support shaft. -Shaped bit support shaft retainer.
設けられた請求項１記載の円筒状ビットの支持軸保持
器。2. The cylindrical bit supporting shaft holder according to claim 1, wherein the base is circular, and a receiving body is provided at the center of the base.
らなる請求項１又は２記載の円筒状ビットの支持軸保持
器。3. A support shaft retainer for a cylindrical bit according to claim 1, wherein the receiving body comprises a cylindrical body into which a lower end of the support shaft can be fitted.
れた請求項１、２又は３記載の円筒状ビットの支持軸保
持器。4. A support shaft retainer for a cylindrical bit according to claim 1, wherein the receiving member is provided with a register hole penetrating the base.
内側部分との間で大きな滑り摩擦係数を有する滑り止め
材を設けた請求項１記載の円筒状ビットの支持軸保持
器。5. The support shaft retainer for cylindrical bits according to claim 1, further comprising a non-slip member having a large coefficient of sliding friction with the inside of the virtual cutting circle on the surface to be cut on the back surface of the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36040792A JP3150467B2 (en) | 1992-12-28 | 1992-12-28 | Support shaft holder for cylindrical bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36040792A JP3150467B2 (en) | 1992-12-28 | 1992-12-28 | Support shaft holder for cylindrical bit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06198638A JPH06198638A (en) | 1994-07-19 |
| JP3150467B2 true JP3150467B2 (en) | 2001-03-26 |
Family
ID=18469278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP36040792A Expired - Lifetime JP3150467B2 (en) | 1992-12-28 | 1992-12-28 | Support shaft holder for cylindrical bit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3150467B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006283493A (en) * | 2005-04-04 | 2006-10-19 | Yamaichi Kenki Kk | Cutter for manhole |
-
1992
- 1992-12-28 JP JP36040792A patent/JP3150467B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06198638A (en) | 1994-07-19 |
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