【考案の詳細な説明】 本考案は田圃の畦畔用に有効で必要に応じて水
平刈取幅を広くでき且水平と垂直方向の刈取りを
同時にできる刈刃の組み合せからなる双用草刈装
置に関する。[Detailed Description of the Invention] The present invention relates to a dual-purpose grass mowing device that is effective for ridges in rice fields, can widen the horizontal cutting width as needed, and has a combination of cutting blades that can cut horizontally and vertically at the same time.
畦畔刈に於ける側面の刈取りは角度が平面刈角
度に対して45゜〜90゜程度の傾斜角度が必要とされ
るため、作業は非常に困難とされている。即ち、
従来の肩掛式では身体ごと傾斜させることから、
作業が困難であると共に、背負式では足もとに刈
刃を位置せざるを得ないことから足を切傷する事
故が多発しており、技術的にも労力的にも困難な
作業となつていた。更に草刈刃は円盤の直径に制
限されて畦畔幅に満たないことから草刈刃は畦畔
傾斜面を斜め上下刈と水平左右に横振り動作をさ
せねばならず、これが著しい労力負担となつてい
た。 Side cutting in ridge mowing requires an angle of inclination of about 45° to 90° relative to the plane cutting angle, making the work extremely difficult. That is,
In the conventional shoulder-carrying style, the whole body is tilted, so
In addition to being difficult to work with, the backpack-style cutter requires the cutting blade to be placed at the foot, resulting in frequent cuts to the feet, making the work technically and labor-intensive. Furthermore, because the mowing blade is limited by the diameter of the disc and is less than the width of the ridge, the mowing blade must cut diagonally up and down the sloped surface of the ridge and swing horizontally from side to side, which is a significant labor burden. Ta.
本願は、主草刈刃の外に同時に連動回転する分
岐の草刈刃を双用させ、水平幅を広くでき、更に
分岐刃を自在に傾倒して直進走行のみで平面刈と
側面刈を同時に行うことができるものである。今
その構造を図によつて説明すると、原動機１に連
動し、下端水平に円盤状の草刈刃２を連結した駆
動軸３を回転自在に軸承した套管４の中間に、傘
歯車伝導装置５を設け、該傘歯車伝導装置５から
分岐せる走行伝導軸６の下端に平歯車組合せとオ
ームギヤ機構により動力伝達できる車軸７を設
け、これに狭幅自走輪８を固着した自走草刈機に
於て、駆動軸３の下部に互に噛合する傘歯車９，
１０を内蔵した傘歯車伝導筐１１を設け、傘歯車
伝導筐１１には動力を直角に分取りする分岐筒を
設け、可撓軸の套管１４を差し込み着脱可能に連
結し、分岐せる傘歯車１０の軸上には可撓軸を差
し込み駆動できる内溝を有する軸を設け、可撓軸
の套管１４及び可撓軸１２を着脱可能に連結し、
可撓軸の套管１４は回動角度自在に傘歯車伝導筐
１１に装着してねじ把手１５で固着自在とし、可
撓軸１２の下端には、円盤状の草刈刃１９をスプ
ライン連結して可撓軸の套管１４と動力伝達装置
１７を角度自在できるように装着ねじ止め１８し
た構造としたものである。１９は把手を示した。 In this application, a branched mowing blade that rotates in conjunction with the main mowing blade is used for both purposes, making it possible to widen the horizontal width, and furthermore, by freely tilting the branched blade, surface mowing and side mowing can be performed simultaneously by only moving straight. It is something that can be done. To explain its structure with a diagram, a bevel gear transmission device 5 is installed in the middle of a mantle 4 which rotatably supports a drive shaft 3 which is linked to a prime mover 1 and has a disk-shaped mowing blade 2 connected horizontally to its lower end. A self-propelled lawn mower is provided with an axle 7 capable of transmitting power by a combination of spur gears and an ohmic gear mechanism at the lower end of a traveling transmission shaft 6 branched from the bevel gear transmission device 5, and a narrow self-propelled wheel 8 is fixed to this axle 7. A bevel gear 9 meshing with the lower part of the drive shaft 3,
A bevel gear transmission case 11 with a built-in bevel gear transmission case 10 is provided, and the bevel gear transmission case 11 is provided with a branching tube for splitting the power at right angles, and a flexible shaft sleeve 14 is inserted and removably connected to the bevel gear transmission case 11 for branching. A shaft having an inner groove into which a flexible shaft can be inserted and driven is provided on the shaft of 10, and the sleeve tube 14 of the flexible shaft and the flexible shaft 12 are removably connected.
The mantle tube 14 of the flexible shaft is attached to the bevel gear transmission casing 11 so as to be able to rotate freely, and can be fixed with a screw handle 15. A disk-shaped mowing blade 19 is connected to the lower end of the flexible shaft 12 by a spline. It has a structure in which the flexible shaft tube 14 and the power transmission device 17 are fixed with mounting screws 18 so that the angle can be freely adjusted. 19 showed the handle.
本願は機体を回転せしめる動力伝達装置１７に
狭幅の１輪駆動輪（図中他方は遊転の補助輪）で
支えているので、畦畔の如何なる凹凸面でも上下
左右の傾倒ながらの進行が自在であり、分岐の草
刈刃１６を自在に回動し、それに套管１４の分岐
装着部の回動を加えて畦畔側面の傾斜に合せた角
度にセツト保持することにより、水平と垂直方向
の同時駆動の回転刈刃が、畦畔の上面と側面をそ
の凹凸に応じて機体を傾倒対応せしめながら労力
を要せずに安定状態で同時に刈取ることができ
る。 In this application, the power transmission device 17 that rotates the aircraft body is supported by a narrow one-wheel drive wheel (the other wheel in the figure is an auxiliary wheel that rotates freely), so it can move forward, up, down, left, right, and even on any uneven surface of the ridge. By freely rotating the branch mowing blade 16 and adding the rotation of the branch attachment part of the cannula 14 to set and hold it at an angle that matches the slope of the ridge side, it can be used in both horizontal and vertical directions. The simultaneously driven rotary cutting blades can simultaneously cut the top and side surfaces of a ridge in a stable state without requiring any effort while tilting the machine according to the unevenness of the ridge.
又分岐の草刈刃１６は常時は水平に固定保持で
きるので、畦畔上面幅が主の草刈刃の直径より大
きい場合でも、分岐刃の直径幅が加わつて１回の
直進行で幅一杯に刈取ることができ、従来のよう
に機体を大きく左右に振り動かす労力を必要とし
ない。 In addition, the branched mowing blade 16 can be held fixed horizontally at all times, so even if the width of the top surface of the ridge is larger than the diameter of the main mowing blade, the diameter width of the branched blade is added to allow the mowing to the full width in one straight movement. This eliminates the need for the effort of swinging the aircraft from side to side, unlike conventional methods.
以上のように本願によれば、従来最も困難視さ
れていた畦畔側面部分とその隣接する平面刈りを
一行程で同時刈取り完了するもので、極めて能率
的であると共に、刈刃と作業者の足もとが全く離
れて保持されているため危険性は全くなく、双方
の刃を水平保持するときは刈取幅は、畦畔上面幅
一杯になり、機体に左右運動を必要とせず、一回
の進行で刈取り出来るなど自走性と刈取面の環境
適応に対して任意選択が自在にできる効果がある
ものである。 As described above, according to the present application, the side surface of the ridge and the adjacent surface mowing, which had been considered the most difficult in the past, can be simultaneously mowed in one stroke, which is extremely efficient and reduces the time required for cutting blades and workers. There is no danger at all because the feet are held completely apart, and when both blades are held horizontally, the cutting width is the full width of the top surface of the ridge, so there is no need for left-right movement of the machine, and it can be cut in one advance. This has the effect of allowing arbitrary selection of self-propulsion and environmental adaptation of the reaping surface, such as being able to reap at will.
【図面の簡単な説明】[Brief explanation of the drawing] 第１図は本考案品の斜視図、第２図は分岐管の
断面図である。 １……原動機、２……草刈刃、３……駆動軸、
４……套管、５……傘歯車伝導装置、６……走行
伝導軸、７……車軸、８……狭幅自走輪、９，１
０……傘歯車、１１……傘歯車伝導筐、１２……
可撓軸、１３……スプライン軸、１４……可撓軸
の套管、１５……ねじ把手、１６……草刈刃、１
７……動力伝達装置、１８……装着ねじ、１９…
…把手。 FIG. 1 is a perspective view of the product of the present invention, and FIG. 2 is a sectional view of the branch pipe. 1... Prime mover, 2... Grass cutting blade, 3... Drive shaft,
4... Mantle, 5... Bevel gear transmission device, 6... Running transmission shaft, 7... Axle, 8... Narrow self-propelled wheel, 9, 1
0...Bevel gear, 11...Bevel gear transmission case, 12...
Flexible shaft, 13...Spline shaft, 14...Flexible shaft mantle, 15...Screw handle, 16...Mowing blade, 1
7...Power transmission device, 18...Mounting screw, 19...
…handle.