JPH02148090U - - Google Patents
Info
- Publication number
- JPH02148090U JPH02148090U JP5686089U JP5686089U JPH02148090U JP H02148090 U JPH02148090 U JP H02148090U JP 5686089 U JP5686089 U JP 5686089U JP 5686089 U JP5686089 U JP 5686089U JP H02148090 U JPH02148090 U JP H02148090U
- Authority
- JP
- Japan
- Prior art keywords
- holder
- cutter bit
- center
- bit
- pin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000009412 basement excavation Methods 0.000 claims description 4
- 239000011435 rock Substances 0.000 claims description 4
Landscapes
- Earth Drilling (AREA)
Description
添付図面は本考案の実施例を示し、第１図は岩
掘削用ビツドの正面図、第２図は第１図のＸ−Ｘ
′線に沿つた断面図、第３図は第２図のＹ−Ｙ′
線に沿つた断面図、第４図は第２図のＺ−Ｚ′線
に沿つた断面図、第５図は岩掘削用ビツドの分解
斜視図、第６図は使用状態図であり、図中、１…
…ホルダー、１ａ……角状受け部、１ｂ……ピン
受け部、１ｃ……止めねじ穴、２……カツタービ
ツド、２ａ……角部、２ｂ……ピン部、２ｃ……
止めねじ穴、３……止めねじ、４……オーガであ
る。
The attached drawings show an embodiment of the present invention, and FIG. 1 is a front view of a bit for rock excavation, and FIG. 2 is taken along line X-X in FIG.
Figure 3 is a cross-sectional view taken along the line Y-Y' in Figure 2.
4 is a sectional view taken along line Z-Z' in FIG. 2, FIG. 5 is an exploded perspective view of the bit for rock excavation, and FIG. Middle, 1...
...Holder, 1a...Square receiving part, 1b...Pin receiving part, 1c...Set screw hole, 2...Cutter bit, 2a...Corner part, 2b...Pin part, 2c...
Set screw hole, 3... set screw, 4... auger.
Claims (1)
つて着脱可能とし、同時にホルダーに対し、カツ
タービツドを回り止めする手段と抜け止めする手
段とを備えた岩掘削用ビツドに於いて； 上記回り止め手段はカツタービツド２の接合部
の中央に凸状に形成された角部２ａとホルダー１
の接合部の中央に凹状に形成された角状受け部１
ａによつて構成され、また上記抜け止め手段はカ
ツタービツド２の角部２ａの上面の中央に凸状に
形成されたピン部２ｂとホルダー１の角状受け部
１ａの中央に凹状に形成されたピン受け部１ｂよ
り成り、ホルダー１の側面から止めねじ３を差し
込み、カツタービツド２のピン部２ｂに形成され
た止めねじ穴２ｃまで挿入し、交換可能に連結し
一体化するように構成されていることを特徴とす
る岩掘削用ビツド。[Scope of Claim for Utility Model Registration] A bit for rock excavation, which is capable of attaching and detaching the cutter bit to the holder using an attachment/detachment means, and at the same time is provided with a means for preventing the cutter bit from rotating and a means for preventing the cutter bit from coming off from the holder; The rotation preventing means is connected to a corner 2a formed in a convex shape at the center of the joint of the cutter bit 2 and the holder 1.
An angular receiving part 1 formed in a concave shape in the center of the joint part of
The retaining means includes a pin portion 2b formed in a convex shape at the center of the upper surface of the corner portion 2a of the cutter bit 2, and a concave shape in the center of the square receiving portion 1a of the holder 1. It consists of a pin receiving part 1b, and is configured such that a set screw 3 is inserted from the side of the holder 1, and is inserted up to a set screw hole 2c formed in the pin part 2b of the cutter bit 2, so that they can be connected and integrated in a replaceable manner. A rock excavation bit characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5686089U JPH02148090U (en) | 1989-05-17 | 1989-05-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5686089U JPH02148090U (en) | 1989-05-17 | 1989-05-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02148090U true JPH02148090U (en) | 1990-12-17 |
Family
ID=31581063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5686089U Pending JPH02148090U (en) | 1989-05-17 | 1989-05-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02148090U (en) |
-
1989
- 1989-05-17 JP JP5686089U patent/JPH02148090U/ja active Pending