JP3337346B2 - Cutting edge - Google Patents
Cutting edgeInfo
- Publication number
- JP3337346B2 JP3337346B2 JP10947695A JP10947695A JP3337346B2 JP 3337346 B2 JP3337346 B2 JP 3337346B2 JP 10947695 A JP10947695 A JP 10947695A JP 10947695 A JP10947695 A JP 10947695A JP 3337346 B2 JP3337346 B2 JP 3337346B2
- Authority
- JP
- Japan
- Prior art keywords
- cutting edge
- blade
- main body
- tip
- width direction
- 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
Landscapes
- Component Parts Of Construction Machinery (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、モータグレーダ、スク
レーパ、ブルドーザ、ホイールローダなどのような建設
機械に用いられるカッティングエッジに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting edge used for construction machines such as motor graders, scrapers, bulldozers, wheel loaders and the like.
【０００２】[0002]
【従来の技術】モータグレーダ、スクレーパ、ブルドー
ザ、ホイールローダなどのような建設機械は、ブレード
の先端に取り付けたカッティングエッジを路面に押し付
けながら走行することで路面を掘削している。このよう
なカッティングエッジは、図３に示すように、ブレード
１２の先端に設けられた支持プレート１３にボルト１４
及びナット１５で着脱可能に取り付けられており、図４
に示すように、その先端が鋭利に形成されている。この
カッティングエッジ１１には、クロム−モリブデン鋼な
どの構造用合金鋼（例えば、ＳＣＭ４３５など）などの
ようなＨＢ５００程の硬度を有する材料が用いられてい
る。2. Description of the Related Art Construction machines such as motor graders, scrapers, bulldozers, and wheel loaders excavate a road surface by running while pressing a cutting edge attached to the tip of a blade against the road surface. As shown in FIG. 3, such a cutting edge is provided with a bolt 14 on a support plate 13 provided at the tip of the blade 12.
4 and detachably attached with a nut 15.
As shown in the figure, the tip is sharply formed. The cutting edge 11 is made of a material having a hardness of about HB500, such as a structural alloy steel such as chromium-molybdenum steel (for example, SCM435).
【０００３】[0003]
【発明が解決しようとする課題】前述したような建設機
械では、時速２０〜３０ｋｍ程で走行することができる
ので、例えば、上記速度で走行しながらカッティングエ
ッジ１１で路面上に積もった雪をかきわければ、高速除
雪を行うことができる。しかしながら、このような高速
除雪を行っている最中に、カッティングエッジ１１が硬
質の障害物などに衝突してしまうと、大きな衝撃力がカ
ッティングエッジ１１に加わってしまい、カッティング
エッジ１１に割れや欠けなどが生じてしまう。このた
め、障害物などとの衝突の度にカッティングエッジ１１
の点検や交換作業を行わなければならず、高速除雪の作
業効率を低下させる要因の一つとなっていた。The construction machine as described above can travel at a speed of about 20 to 30 km / h. For example, while traveling at the above-mentioned speed, the snow accumulated on the road surface at the cutting edge 11 is dissected. Then, high-speed snow removal can be performed. However, if the cutting edge 11 collides with a hard obstacle or the like while performing such high-speed snow removal, a large impact force is applied to the cutting edge 11, and the cutting edge 11 is cracked or chipped. And so on. For this reason, the cutting edge 11 is required for every collision with an obstacle or the like.
Inspection and replacement work must be performed, which is one of the factors that reduce the work efficiency of high-speed snow removal.
【０００４】[0004]
【課題を解決するための手段】前述した課題を解決する
ための、本発明によるカッティングエッジは、建設機械
のブレードの先端に着脱可能に設けられるカッティング
エッジであって、前記ブレードの先端に着脱可能に設け
られ、高耐衝撃性を有する本体部と、前記本体部の先端
側に幅方向全長にわたって設けられ、当該幅方向へ複数
に分割された高耐摩耗性を有する刃部とを備えてなるこ
とを特徴とする。According to the present invention, there is provided a cutting edge detachably provided at the tip of a blade of a construction machine, the cutting edge being detachably attached to the tip of the blade. And a main body part having high impact resistance, and a plurality of main body parts are provided on the distal end side of the main body part over the entire length in the width direction, and are provided in the width direction.
And a blade part having high abrasion resistance and divided into two .
【０００５】[0005]
【０００６】[0006]
【作用】前述したように構成された本発明のカッティン
グエッジによれば、刃部が障害物などに衝突すると、当
該衝突に伴って刃部に加わる衝撃力を本体部が緩衝する
ので、刃部に割れや欠けなどが生じにくくなる。According to the cutting edge of the present invention configured as described above, when the blade collides with an obstacle or the like, the main body absorbs the impact force applied to the blade due to the collision. Cracks and chips are less likely to occur.
【０００７】前記刃部が前述したように複数に分割され
ていれば、刃部の割れや欠けなどがさらに生じにくくな
る。[0007] If the blade is divided into a plurality of parts as described above, the blade is less likely to crack or chip.
【０００８】[0008]
【実施例】本発明によるカッティングエッジの一実施例
を図１，２を用いて説明する。なお、図１は、その構造
を表す外観図、図２は、その側面図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a cutting edge according to the present invention will be described with reference to FIGS. FIG. 1 is an external view showing the structure, and FIG. 2 is a side view thereof.
【０００９】図１に示すように、円弧状に曲折した本体
部１ａの基端側には、ボルト穴１ｂが幅方向に沿って複
数形成されている。本体部１ａの表面側の先端寄りに
は、段部１ｃが幅方向に沿って形成されている。この段
部１ｃには、図２に示すように、先端側を鋭利に形成し
た刃部１ｄが取り付けられており、当該刃部１ｄは、そ
の表面が本体部１ａの表面と連続するように当該本体部
１ａの曲率と同様な曲率で曲折されている。当該刃部１
ｄは、図１に示すように、本体部１ａの幅方向へ複数に
分割されている。As shown in FIG. 1, a plurality of bolt holes 1b are formed along the width direction at the base end side of the main body 1a bent in an arc shape. A step 1c is formed along the width direction near the front end of the main body 1a. As shown in FIG. 2, a blade portion 1d having a sharp tip is attached to the step portion 1c, and the blade portion 1d is attached so that its surface is continuous with the surface of the main body portion 1a. It is bent at a curvature similar to the curvature of the main body 1a. The blade 1
As shown in FIG. 1, d is divided into a plurality in the width direction of the main body 1a.
【００１０】前記本体部１ａは、構造用炭素鋼（例え
ば、Ｓ４３Ｃなど）やクロム−モリブデン鋼などの構造
用合金鋼（例えば、ＳＣＭ４３５など）などのようなＨ
Ｂ５００以下の硬度を有する材料、即ち、高耐衝撃性を
有する材料からなる一方、前記刃部１ｄは、タングステ
ンカーバイト系の超硬合金などのようなＨＢ１０００以
上の硬度を有する材料、即ち、高耐摩耗性を有する材料
からなっており、上記刃部１ｄは、上記本体部１ａの前
記段部１ｃにろう付けされている。The main body 1a is made of H such as structural carbon steel (for example, S43C) or structural alloy steel such as chromium-molybdenum steel (for example, SCM435).
The blade portion 1d is made of a material having a hardness of HB1000 or more, such as a tungsten carbide-based cemented carbide, while being made of a material having a hardness of B500 or less, that is, a material having high impact resistance. The blade 1d is brazed to the step 1c of the main body 1a.
【００１１】このようなカッティングエッジ１をモータ
グレーダ、スクレーパ、ブルドーザ、ホイールローダな
どのような建設機械のブレードにボルトで取り付け、前
述のような高速除雪に用いると、刃部１ｄと障害物など
とが衝突しても、本体部１ａが刃部１ｄに加わる衝撃力
を緩衝すると共に、刃部１ｄが幅方向へ複数に分割され
ているので、刃部１ｄに割れや欠けなどを生じさせずに
除雪作業を行うことができる。When such a cutting edge 1 is bolted to a blade of a construction machine such as a motor grader, a scraper, a bulldozer, a wheel loader, etc., and used for high-speed snow removal as described above, the blade 1d and obstacles are removed. Even if a collision occurs, the main body 1a buffers the impact force applied to the blade 1d, and the blade 1d is divided into a plurality of pieces in the width direction, so that the blade 1d does not crack or chip. Snow removal work can be performed.
【００１２】従って、除雪作業中にカッティングエッジ
１の点検や交換作業などを行う頻度を大幅に減らすこと
ができ、高速除雪の効率を大幅に向上させることができ
る。Accordingly, the frequency of performing inspection and replacement work of the cutting edge 1 during snow removal work can be greatly reduced, and the efficiency of high-speed snow removal can be greatly improved.
【００１３】また、除雪作業の際、カッティングエッジ
に幅方向１ｍ当り２０００ｋｇ程の押圧力を加えながら
時速２０〜３０ｋｍ程で走行するため、従来のカッティ
ングエッジでは、４０ｋｍ程走行しただけで刃部が５０
ｍｍ以上摩耗して鈍くなってしまい、１〜２日に一度の
割合で交換しなければならなかったが、本実施例のカッ
ティングエッジ１では、刃部１ｄに前述したような高耐
摩耗性を有する材料を用いているので、上述の条件下で
使用しても刃部１ｄの先端側が鈍くなりにくく、従来の
カッティングエッジよりも寿命が約１０〜１００倍程延
びるようになり、交換頻度を大幅に減らすことができ
る。このため、交換作業に係る作業員の負担を大幅に少
なくすることができる。[0013] In addition, during snow removal work, the cutting edge travels at a speed of about 20 to 30 km / h while applying a pressing force of about 2000 kg per 1 m in the width direction. 50
mm or more and became dull, and had to be replaced once every 1 to 2 days. However, in the cutting edge 1 of this embodiment, the blade portion 1d has the high wear resistance as described above. The use of a material having the same makes it difficult for the tip side of the blade portion 1d to become dull even when used under the above-mentioned conditions, the life is extended by about 10 to 100 times as compared with the conventional cutting edge, and the frequency of replacement is greatly increased. Can be reduced to For this reason, the burden on the worker involved in the replacement work can be significantly reduced.
【００１４】なお、カッティングエッジ１の外形サイズ
やボルト穴１ｂの位置などの規格値を従来のカッティン
グエッジと同様にすれば、従来のカッティングエッジと
互換性を有することができるので、建設機械に現在使用
されているブレードに即時に取り付けて用いることがで
きる。If the standard values such as the outer size of the cutting edge 1 and the position of the bolt hole 1b are the same as those of the conventional cutting edge, the cutting edge can be compatible with the conventional cutting edge. It can be used immediately attached to the blade being used.
【００１５】[0015]
【発明の効果】前述したように、本発明によるカッティ
ングエッジでは、刃部が障害物などに衝突すると、当該
衝突に伴って刃部に加わる衝撃力を本体部が緩衝するの
で、刃部に割れや欠けなどが生じにくくなる。このた
め、点検や交換作業などを行う頻度を大幅に減らすこと
ができ、作業効率を大幅に向上させることができる。As described above, in the cutting edge according to the present invention, when the blade collides with an obstacle or the like, the main body absorbs the impact force applied to the blade due to the collision. And chipping are less likely to occur. For this reason, the frequency of performing inspection and replacement work can be greatly reduced, and work efficiency can be greatly improved.
【００１６】また、刃部が前述したように複数に分割さ
れていれば、刃部の割れや欠けなどがさらに生じにくく
なるので、点検や交換作業の頻度をさらに減らすことが
でき、作業効率をさらに向上させることができる。If the blade is divided into a plurality of parts as described above, the blade is less likely to be cracked or chipped, so that the frequency of inspection and replacement work can be further reduced, and work efficiency can be reduced. It can be further improved.
【図１】本発明によるカッティングエッジの一実施例の
構造を表す外観図である。FIG. 1 is an external view showing a structure of an embodiment of a cutting edge according to the present invention.
【図２】その側面図である。FIG. 2 is a side view thereof.
【図３】従来のカッティングエッジの構造を表すブレー
ド付近の分解斜視図である。FIG. 3 is an exploded perspective view of the vicinity of a blade showing a structure of a conventional cutting edge.
【図４】従来のカッティングエッジの側面図である。FIG. 4 is a side view of a conventional cutting edge.
【符号の説明】 １ カッティングエッジ １ａ 本体部 １ｂ ボルト穴 １ｃ 段部 １ｄ 刃部[Description of Signs] 1 Cutting edge 1a Main body 1b Bolt hole 1c Step 1d Blade
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭50−35904（ＪＰ，Ａ) 実開 昭57−38865（ＪＰ，Ｕ) 実開 昭63−31118（ＪＰ，Ｕ) 実開 平２−5449（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) E02F 9/28 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-50-35904 (JP, A) JP-A-57-38865 (JP, U) JP-A-63-31118 (JP, U) JP-A-2- 5449 (JP, U) (58) Fields surveyed (Int. Cl. 7 , DB name) E02F 9/28
Claims (1)
設けられるカッティングエッジであって、 前記ブレードの先端に着脱可能に設けられ、高耐衝撃性
を有する本体部と、 前記本体部の先端側に幅方向全長にわたって設けられ、
当該幅方向へ複数に分割された高耐摩耗性を有する刃部
とを備えてなることを特徴とするカッティングエッジ。1. A cutting edge removably provided at a tip of a blade of a construction machine, a main body having a high impact resistance detachably provided at a tip of the blade, and a tip side of the main body. Is provided over the entire length in the width direction ,
A cutting edge having high wear resistance and divided into a plurality of portions in the width direction .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10947695A JP3337346B2 (en) | 1995-05-08 | 1995-05-08 | Cutting edge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10947695A JP3337346B2 (en) | 1995-05-08 | 1995-05-08 | Cutting edge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08302757A JPH08302757A (en) | 1996-11-19 |
| JP3337346B2 true JP3337346B2 (en) | 2002-10-21 |
Family
ID=14511212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10947695A Expired - Lifetime JP3337346B2 (en) | 1995-05-08 | 1995-05-08 | Cutting edge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3337346B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101158262B1 (en) | 2011-12-23 | 2012-06-19 | 티. 알산업(주) | A shovel knife for snow removing and manufacturing the same |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6571493B2 (en) | 1999-12-27 | 2003-06-03 | Komatsu Ltd. | Cutting edge |
| JP2008095380A (en) * | 2006-10-12 | 2008-04-24 | Hokuto:Kk | Cutting device and cutting machine |
| JP5898368B1 (en) * | 2015-10-17 | 2016-04-06 | 有限会社功和工業 | Roadbed collapse method |
-
1995
- 1995-05-08 JP JP10947695A patent/JP3337346B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101158262B1 (en) | 2011-12-23 | 2012-06-19 | 티. 알산업(주) | A shovel knife for snow removing and manufacturing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08302757A (en) | 1996-11-19 |
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