JPS5844802Y2 - tilling nails - Google Patents
tilling nailsInfo
- Publication number
- JPS5844802Y2 JPS5844802Y2 JP1977044286U JP4428677U JPS5844802Y2 JP S5844802 Y2 JPS5844802 Y2 JP S5844802Y2 JP 1977044286 U JP1977044286 U JP 1977044286U JP 4428677 U JP4428677 U JP 4428677U JP S5844802 Y2 JPS5844802 Y2 JP S5844802Y2
- Authority
- JP
- Japan
- Prior art keywords
- blade part
- vertical blade
- blade
- base
- vertical
- 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
Links
Landscapes
- Soil Working Implements (AREA)
Description
【考案の詳細な説明】
従来、動力耕うん機の耕うん軸の爪ホルダーに取付けら
れていた耕うんなた爪の肉厚は基部から先端部まで同一
の厚さに形成されていたため、草藁が巻付くと、除却さ
れにくく耕うん抵抗の増大と耕うん深さの不安定の原因
となっていた。[Detailed description of the invention] Conventionally, the thickness of the tiller claws attached to the claw holder of the tiller shaft of a power tiller was formed to be the same thickness from the base to the tip. Once attached, it is difficult to remove, causing increased tillage resistance and instability in tillage depth.
この出願の考案は、従来の耕うんなた爪における上記の
欠点を改良し、巻付いた草藁が除却され易く、耕うん抵
抗の少ない耕うん爪を提供するものである。The invention of this application improves the above-mentioned drawbacks of conventional tiller blades, and provides a tiller blade that allows entangled grass straw to be easily removed and has less tilling resistance.
以下、図面に示す実施例に基づいて詳しく説明する。Hereinafter, a detailed description will be given based on the embodiments shown in the drawings.
動力耕うん機における耕うん軸１の爪ホルダ−２の角孔
部に嵌合する耕うん爪の基部３は、対辺が平行で、同じ
肉厚に形成されている。A base 3 of a tilling claw that fits into a square hole of a claw holder 2 of a tilling shaft 1 in a power tiller has opposite sides parallel to each other and is formed to have the same thickness.
この基部３には、第１，２図で示すように基部３の対辺
から連続した刃縁６と背縁７とが同一平面内に位置し、
かつ耕うん爪の回転方向に対して後退角を有するように
彎曲形威された縦刃部４が連設されており、また、この
縦刃部４には、先端側を縦刃部４の側方に偏位するよう
に横刃部５が連設されている。As shown in FIGS. 1 and 2, this base 3 has a blade edge 6 and a back edge 7 that are continuous from the opposite side of the base 3 and are located in the same plane.
Further, a vertical blade part 4 is provided in a row, and the vertical blade part 4 is curved so as to have a receding angle with respect to the rotational direction of the tilling claw. Horizontal blade portions 5 are successively provided so as to be deviated in the direction.
そして、刃縁６と背縁７との間の幅を縦刃部４から横刃
部５へかけて漸次幅が広くなるよう形成されている。The width between the blade edge 6 and the back edge 7 is formed so that the width gradually increases from the vertical blade part 4 to the horizontal blade part 5.
縦刃部４の肉厚は第２，３図で示すように基部３の肉厚
から横刃部５側の薄い肉厚へと漸次減少するように形成
し、縦刃部４の刃縁６と背縁７との間の幅内中間部に反
対面から押出された突出条８を基部３側から縦刃部４の
長手方向中程にかけて形成するに、突出条８の幅を基部
３側へ漸次広くするとともに、突出条８の高さを横刃部
５側で漸次減少して消滅するように形成している。As shown in FIGS. 2 and 3, the wall thickness of the vertical blade portion 4 is formed so as to gradually decrease from the thickness of the base portion 3 to a thinner wall thickness on the side of the horizontal blade portion 5. In order to form a protruding strip 8 extruded from the opposite surface in the middle part of the width between the base 3 side and the back edge 7 from the base 3 side to the middle in the longitudinal direction of the vertical blade part 4, the width of the protruding strip 8 is It is formed so that the height of the protruding strip 8 gradually decreases and disappears on the side of the horizontal blade portion 5.
尚、９は耕うん爪を爪ホルダ−２に取付けるボルトの挿
通するボルト孔である。Note that 9 is a bolt hole through which a bolt for attaching the tilling claw to the claw holder 2 is inserted.
つぎに、この実施例における耕うん爪の作用について説
明する。Next, the action of the tilling claws in this embodiment will be explained.
耕うん軸１が回転して、耕うん爪が土壌に切込む際は、
縦刃部４の基部３側の刃縁６から土壌へ切込み、耕うん
爪の回転角が大きくなるにつれて、刃縁６の土壌へ切込
む長さは漸次長くなり、縦刃部４が土壌より受ける耕う
ん抵抗は縦刃部４の刃縁６が全部切込むまで漸次増大す
る。When the tiller shaft 1 rotates and the tiller claws cut into the soil,
The blade edge 6 on the base 3 side of the vertical blade part 4 cuts into the soil, and as the rotation angle of the tilling claw increases, the length of the blade edge 6 to cut into the soil gradually becomes longer, and the vertical blade part 4 receives from the soil. The tilling resistance gradually increases until the blade edge 6 of the vertical blade portion 4 completely cuts.
しかし、縦刃部４の肉厚は基部３の肉厚から横刃部５側
の薄い肉厚へと漸次減少するよう形成されているから、
耕うん抵抗の増加率は、従来の耕うんなた爪に比べて少
ない。However, since the thickness of the vertical blade portion 4 is formed to gradually decrease from the thickness of the base portion 3 to the thinner wall thickness on the side of the horizontal blade portion 5,
The rate of increase in tillage resistance is less than that of conventional tillage machetes.
また、縦刃部４の切込みに続いて土壌に切込まれた横刃
部５は、土壌を所定のきざみ量の土塊に分割するととも
に、その土塊を側方へ反転移動させる際に土壌から第４
図の矢印イ方向の耕うん抵抗Ｗを受ける。Further, the horizontal blade part 5, which is cut into the soil following the cutting by the vertical blade part 4, divides the soil into soil clods in predetermined increments, and when moving the soil clods laterally, the horizontal blade part 5 cuts into the soil. 4
It receives tilling resistance W in the direction of arrow A in the figure.
そして、この耕うん抵抗によって、縦刃部４には、第４
図で示すように縦刃部４をその肉厚の方向、すなわち縦
刃部４を側方へ曲げようとする曲げモーメントＷＸが発
生するが、縦刃部４は肉厚を横刃部５側程小さくなるこ
の曲げモーメントの大きさに合うかのように基部３側か
ら横刃部５側へ漸次薄くしており、また押出し突出条８
を設けているので、充分な強度を持って、耕うん作用と
することができる。Due to this tilling resistance, the vertical blade part 4 has a fourth
As shown in the figure, a bending moment WX is generated that tends to bend the vertical blade part 4 in the direction of its wall thickness, that is, to the side of the vertical blade part 4. The thickness of the extruded protruding strip 8 is gradually reduced from the base 3 side to the side blade 5 side, as if to match the size of this bending moment, which decreases as the bending moment increases.
Since it is provided with sufficient strength, it can be used as a tilling action.
そして耕うん爪が耕うん軸１の後方へ回動する際には、
縦刃部４に巻付いた草藁は縦刃部４の肉厚が横刃部５側
程薄く形成させているので、後方へ放てきされる土塊と
ともに、縦刃部４に沿って移動させられ後方へ放てきさ
れる。When the tilling claws rotate toward the rear of the tilling shaft 1,
The grass straw wrapped around the vertical blade part 4 is formed so that the thickness of the vertical blade part 4 becomes thinner toward the horizontal blade part 5, so that it is moved along the vertical blade part 4 along with the clod thrown backward. He was thrown backwards.
要するに、この考案は、耕うん軸１の爪ホルダ−２に取
付けられる基部３に続いて縦刃部４を彎曲形成するとと
もに、この縦刃部４に続いて先端側が縦刃部４より側方
に偏位するよう横刃部５を彎曲形成し、刃縁６と背縁７
との間の幅を縦刃部４から横刃部５へかけて漸次幅広く
なるように形成した耕うんなた爪において、縦刃部４を
基部３の肉厚から横刃部５側の薄い肉厚へと漸次減少す
るように形成し、縦刃部４の刃縁６と背縁７との間の幅
内中間部に反対面から押出された突出条８を基部３側か
ら縦刃部４の長手方向中程にかけて形成するに、突出条
８の幅を基部３側がら横刃部５側へ漸次広くするととも
に、突出条８の高さを横刃部５側で漸次減少するように
形成したことを特徴とする耕うん爪であり、縦刃部４が
土壌へ切込む際に受ける耕うん抵抗は、縦刃部４の刃縁
６が基部３側から横刃部５側まで土壌中に切込む間、漸
次増大するが縦刃部４の肉厚が基部３側から横刃部５側
へ漸次減少しているので、縦刃部４が土壌に切込む際の
耕うん抵抗の増加率は、同一の肉厚で形成されていた従
来の耕うんなた爪と比較してはるかに少ない耕うん爪で
あって、動力耕うん機の耕うん動力を少なくすることが
できる。In short, this invention forms a curved vertical blade part 4 following the base part 3 attached to the pawl holder 2 of the tillage shaft 1, and the tip side of the vertical blade part 4 is laterally moved from the vertical blade part 4. The side blade portion 5 is curved so as to be deflected, and the blade edge 6 and back edge 7 are
In a tiller claw formed so that the width gradually increases from the vertical blade part 4 to the horizontal blade part 5, the vertical blade part 4 is extended from the thickness of the base 3 to the thin wall on the horizontal blade part 5 side. The vertical blade part 4 is formed so as to gradually decrease in thickness, and a protruding strip 8 extruded from the opposite surface is formed at the middle part of the width between the blade edge 6 and the back edge 7 of the vertical blade part 4 from the base 3 side. The width of the protruding strip 8 is gradually widened from the base 3 side toward the horizontal blade portion 5 side, and the height of the protruding strip 8 is gradually decreased toward the horizontal blade portion 5 side. This is a tilling claw characterized by the fact that the tilling resistance that the vertical blade part 4 receives when cutting into the soil is reduced when the blade edge 6 of the vertical blade part 4 cuts into the soil from the base 3 side to the horizontal blade part 5 side. The thickness of the vertical blade part 4 gradually increases while the tillage is in the soil, but the wall thickness of the vertical blade part 4 gradually decreases from the base part 3 side to the horizontal blade part 5 side, so the rate of increase in tillage resistance when the vertical blade part 4 cuts into the soil is: The number of tilling claws is far smaller than that of conventional tilling claws formed with the same wall thickness, and the tilling power of the power tiller can be reduced.
また、縦刃部４は横刃部５の土壌から受ける耕うん抵抗
Ｗによって縦刃部４に対し側方へ作用する曲げモーメン
）ＷＸの大きさに応じて基部３側がら横刃部５側へ漸次
減少するよう形成するとともに、縦刃部４の刃縁６と背
縁７との中間部に押出し突出条８を形成しているので、
上記したような縦刃部４の受ける曲げモーメントにも充
分な強度があり、同一の肉厚であった従来の耕うんなた
爪に比較して、余分な肉厚をなくして安価な耕うん爪を
提供することができる。In addition, the vertical blade part 4 moves from the base 3 side to the horizontal blade part 5 side according to the magnitude of the bending moment (WX) that acts laterally on the vertical blade part 4 due to the tillage resistance W received from the soil of the horizontal blade part 5. Since it is formed so as to gradually decrease, and an extruded protruding strip 8 is formed at the intermediate portion between the blade edge 6 and the back edge 7 of the vertical blade portion 4,
It has sufficient strength to withstand the bending moment that the vertical blade portion 4 is subjected to as described above, and compared to conventional tiller claws with the same wall thickness, we have created a cheaper tiller claw with no extra wall thickness. can be provided.
さらにまた縦刃部４が基部３側から横刃部５側へ肉厚を
漸次減少させているので、縦刃部４に巻付いた草藁は耕
うん爪が後方へ回動したときに放てきされる土壌ととも
に除却されて耕うん動力の増大を防ぐとともに安定した
耕うん深度を確保できる。Furthermore, since the thickness of the vertical blade portion 4 gradually decreases from the base 3 side to the horizontal blade portion 5 side, the grass straw wrapped around the vertical blade portion 4 is released when the tilling claw rotates backward. This prevents an increase in tillage power and ensures a stable tillage depth.
図面は、この考案の実施例を示し、第１図はこの考案を
施した耕うん爪の平面図、第２図はこの耕うん爪の側面
図、第３図は第２図におけるＡ−Ａ線、Ｂ−Ｂ線および
Ｃ−Ｃ線の断面図、第４図は耕うん爪に作用する曲げモ
ーメントの分布を示す。
記号の説明 １・・・・・・耕うん軸、２・・・・・・
爪ホルダ−３・・・・・・基部、４・・・・・・縦刃部
、５・・・・・・横刃部、６・・・・・・刃縁、７・・
・・・・背縁、８・・・・・・突出条、９・・・・・・
孔、Ｗ・・・・・・横刃部材うん抵抗、Ｘ・・・・・・
横刃部がら縦刃部の任意の点までの距離。The drawings show an embodiment of this invention; FIG. 1 is a plan view of a tilling claw to which this invention is applied, FIG. 2 is a side view of this tilling claw, and FIG. 3 is a line taken along line A-A in FIG. FIG. 4, a cross-sectional view taken along lines B-B and C-C, shows the distribution of bending moment acting on the tiller claws. Explanation of symbols 1...Tilling axis, 2...
Claw holder - 3...Base, 4...Vertical blade part, 5...Horizontal blade part, 6...Blade edge, 7...
...Dorsal edge, 8...Protruding stripe, 9...
Hole, W...Horizontal blade member resistance, X...
Distance from the horizontal blade to any point on the vertical blade.
Claims (1)
て縦刃部４を彎曲形成するとともに、この縦刃部４に続
いて先端側が縦刃部４より側方に偏位するよう横刃部５
を彎曲形威し、刃縁６と背縁７との間の幅を縦刃部４か
ら横刃部５へかけて漸次幅広くなるように形成した耕う
んなた爪において、縦刃部４を基部３の肉厚から横刃部
５側の薄い肉厚へと漸次減少するように形成し、縦刃部
４の刃縁６と背縁７との間の幅内中間部に反対面から押
し出された突出条８を基部３側から縦刃部４の長手方向
中程にかけて形成するに、突出条８の幅を基部３側から
横刃部５側へ漸次広くするとともに、突出条８の高さを
横刃部５側で漸次減少するように形成したことを特徴と
する耕うん爪。Continuing from the base 3 attached to the claw holder 2 of the tillage shaft 1, a vertical blade part 4 is formed in a curved manner, and a horizontal blade is formed next to the vertical blade part 4 so that the tip side is deviated laterally from the vertical blade part 4. Part 5
In the tiller blade, which has a curved shape and is formed so that the width between the blade edge 6 and the back edge 7 gradually becomes wider from the vertical blade part 4 to the horizontal blade part 5, the vertical blade part 4 is connected to the base. It is formed so that the thickness gradually decreases from the thickness of 3 to the thinner wall thickness on the side of the horizontal blade part 5, and is extruded from the opposite surface to the middle part of the width between the blade edge 6 and the back edge 7 of the vertical blade part 4. To form the protruding strip 8 from the base 3 side to the middle in the longitudinal direction of the vertical blade section 4, the width of the protruding strip 8 is gradually increased from the base 3 side to the horizontal blade section 5 side, and the height of the protruding strip 8 is A tilling claw characterized in that the number is formed so as to gradually decrease on the side of the horizontal blade portion 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1977044286U JPS5844802Y2 (en) | 1977-04-08 | 1977-04-08 | tilling nails |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1977044286U JPS5844802Y2 (en) | 1977-04-08 | 1977-04-08 | tilling nails |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS53138901U JPS53138901U (en) | 1978-11-02 |
| JPS5844802Y2 true JPS5844802Y2 (en) | 1983-10-12 |
Family
ID=28920309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1977044286U Expired JPS5844802Y2 (en) | 1977-04-08 | 1977-04-08 | tilling nails |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5844802Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5843042B2 (en) * | 1977-06-24 | 1983-09-24 | 小橋工業株式会社 | Cultivating claws |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS539601Y2 (en) * | 1975-08-28 | 1978-03-14 |
-
1977
- 1977-04-08 JP JP1977044286U patent/JPS5844802Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS53138901U (en) | 1978-11-02 |
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