JPH0232012Y2

JPH0232012Y2 -

Info

Publication number: JPH0232012Y2
Application number: JP14772687U
Authority: JP
Priority date: 1987-09-28
Filing date: 1987-09-28
Publication date: 1990-08-30
Also published as: JPS6452419U

Description

【考案の詳細な説明】 (イ) 産業上の利用分野玉蜀黍、砂糖黍等の木繊茎の植物を刈取るに用
いる変形鎌に関する。[Detailed description of the invention] (a) Industrial application field This invention relates to a modified sickle used for cutting down plants with woody stems such as corn and sugar cane.

(ロ) 従来の技術鎌は通常三日月形の半円状をなし、柄は鎌刃と
水平状に取りつけられ、刃尖は半円の内側に付刃
され、入力の度合を先端側に注ぎ鎌の先端で引掛
けの状態に切取るものである。(b) Conventional technology A sickle usually has a crescent-shaped semicircular shape, the handle is attached horizontally to the sickle blade, and the blade tip is attached to the inside of the semicircle. It is cut off at the tip to make a hook.

(ハ) 考案が解決しようとする問題点このような鎌は柔かい草植物においては極めて
楽にしかも差程労力を必要としないが玉蜀黍、砂
糖黍類の如き茎の太いしかも固い木繊茎において
は三日月状の鎌は、かえつて力を必要とする割に
切取りが困難で、しかも多数の収獲においては疲
労が最も激しく、必然人力を多数要することとな
り、まして機械刈においては径費の増加が大きい
等の問題点を生じていた。(c) Problems that the invention aims to solve Such a sickle is extremely easy to use for soft grass plants and does not require much effort, but it is crescent-shaped for thick and hard woody stems such as corn and sugar cane. It is difficult to cut with a sickle even though it requires a lot of force, and it is also extremely tiring when harvesting a large number of crops, which inevitably requires a lot of human power. It was causing problems.

(ニ) 問題点を解決するための手段前記の如き問題点を解決するため本考案を提供
するものであるが、本考案について、図により説
明すると鎌刃の刃尖を外円形にし、かつ入力の方
向を決めるため丸柄木を傾斜させる、第１図およ
び第２図において鎌刃１を形成する刃尖４が描く
水平線Ｃ−Ｃに対して第１図は丸柄木５を斜め上
にし、左倒しの状態にして約60度を有し、第２図
は丸柄木２を右斜めにし、約60度倒傾させる、つ
ぎに鎌刃１は扇形をなし刃尖４は外円を形成し、
扇形の要部２の片端部に平板の柄木取付金具３を
上述の如く丸柄木の傾斜に沿うて鎌刃１に溶着す
る、そして、鎌刃１は第４図および第５図に示す
如く刃尖４が描く水平線Ｃ−Ｃと鎌刃１の中心線
Ｅ−Ｅとがなす右辺面側の角度を約25度、（左辺
面側の場合でもよい）また、鎌刃１の中心線Ｆ−
Ｆとがなす左辺面側の角度を約45度（右辺面側の
場合でもよい）、にそれぞれ屈曲する、このよう
に刃剣の反刃に当合まり切味は良好となり、本目
的を達することができる。(d) Means for solving the problems The present invention is provided to solve the above-mentioned problems.The present invention will be explained with the help of a diagram. In order to determine the direction of the round-handled wood, the round-handled wood is inclined. In Fig. 1, the round-handled wood 5 is tilted upward relative to the horizontal line C-C drawn by the blade tip 4 forming the sickle blade 1 in Figs. 1 and 2. , it has an angle of about 60 degrees when tilted to the left, and in Figure 2, the round handle wood 2 is tilted to the right and tilted at about 60 degrees.Next, the sickle blade 1 is fan-shaped and the blade tip 4 has an outer circle. form,
A flat handle mounting bracket 3 is welded to one end of the fan-shaped main part 2 to the sickle blade 1 along the slope of the round handle as described above, and the sickle blade 1 is shown in FIGS. 4 and 5. The angle between the horizontal line C-C drawn by the blade tip 4 and the center line E-E of the sickle blade 1 on the right side is approximately 25 degrees (it may also be on the left side), and the center line of the sickle blade 1. F-
The angle formed by F on the left side is bent to approximately 45 degrees (the right side may also be used).In this way, it hits the opposite edge of the blade and the cutting quality is good, achieving the purpose. be able to.

(ホ) 作用第６図に示す如く鎌刃１の先端部を茎に当て手
前に引くと、最初の入力のため若干強度の高い強
力Ｓが発生し木繊茎に喰入ることとなり、そのま
ま刃尖４の水平線Ｃ−Ｃに沿うて引くと刃尖１ａ
は茎内に力Ａとなつて更に切込み最後弱力Ｗで完
全に刈取られる。(E) Action As shown in Figure 6, when the tip of the sickle blade 1 is placed on the stem and pulled toward you, a force S with a slightly higher strength is generated due to the initial input, which bites into the wood fiber stem, and the blade remains as it is. If you pull along the horizontal line C-C of tip 4, you will get tip 1a.
becomes a force A inside the stem, and is completely cut off with a weak force W at the end of the cut.

(ヘ) 考案の効果上記の如く反刃による切味は逆の内刃による切
味も良好であることは刃剣により知られていると
ころで、本考案は鎌刃１を反刃に替えたものであ
り、使用時の入力時期が、その都度、変化し、最
後の刈取り時に於ては、殆んど微力でよいことと
なり、通常の三日月形の鎌刃と逆の現象が生じる
従つて疲労度も少なくて済み、かつ、能率も倍加
するので径費も少なくてよい等の極めて顕著な効
果をあらわす。(F) Effect of the invention As mentioned above, it is known from blades that the cutting quality of the reversed blade is also good, as is the cutting quality of the opposite inner blade.The present invention replaces sickle blade 1 with a reversed blade. Therefore, the input timing during use changes each time, and at the time of final reaping, almost a slight force is required, which causes a phenomenon opposite to that of a normal crescent-shaped sickle blade.Therefore, the degree of fatigue increases. This has extremely significant effects, such as requiring less equipment and doubling efficiency, resulting in less labor costs.

[Brief explanation of the drawing]

第１図は本考案の実施例を示す一部切欠させた
平面図であり、第２図は背面図、第３図は柄木を
垂直にさせた正面図、第４図は鎌刃の右傾斜を示
す側面図、第５図は鎌刃の左傾斜を示す側面図、
第６図は使用状態時の入力位置を示す説明図であ
る。１……鎌刃、２……丸柄木、３……柄木取付金
具、４……刃尖、５……丸柄木。 Fig. 1 is a partially cutaway plan view showing an embodiment of the present invention, Fig. 2 is a rear view, Fig. 3 is a front view with the handle wood vertical, and Fig. 4 is a right side view of the sickle blade. A side view showing the inclination, FIG. 5 is a side view showing the left inclination of the sickle blade,
FIG. 6 is an explanatory diagram showing input positions during use. 1...sickle blade, 2...round handle wood, 3...handle wood mounting bracket, 4...blade tip, 5...round handle wood.

Claims

[Scope of utility model registration request]

A flat handle wood mounting bracket 3 is welded to one end of the main part 2 of the fan-shaped sickle blade 1 at an angle of approximately 60 degrees with respect to the horizontal line C-C drawn by the blade tip 4, and a round handle wood 5 is attached. In addition, the sickle blade 1 is a modified sickle characterized in that the right side of the main part 2 has a helix angle of about 25 degrees and the left side of the main part 2 has a helix angle of about 45 degrees with respect to the horizontal line C-C of the blade tip 4. .