JPH0748961B2 - Lawn cutting device - Google Patents
Lawn cutting deviceInfo
- Publication number
- JPH0748961B2 JPH0748961B2 JP2156317A JP15631790A JPH0748961B2 JP H0748961 B2 JPH0748961 B2 JP H0748961B2 JP 2156317 A JP2156317 A JP 2156317A JP 15631790 A JP15631790 A JP 15631790A JP H0748961 B2 JPH0748961 B2 JP H0748961B2
- Authority
- JP
- Japan
- Prior art keywords
- outer peripheral
- cutting
- peripheral edge
- edge
- cut
- 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 - Fee Related
Links
Landscapes
- Soil Working Implements (AREA)
- Cultivation Of Plants (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は例えば、ゴルフ場のグリーン等において芝面に
所定深さの筋状の切込溝を形成するための芝生切込装置
に関する。Description: TECHNICAL FIELD The present invention relates to a lawn cutting device for forming a streak-shaped cutting groove having a predetermined depth on a grass surface, for example, on a green of a golf course or the like.
従来、芝面に所定深さの筋状の切込溝を形成することに
より、水分や酸素および肥料等が土中に浸透しやすくし
て芝生の育成を助長させることが行なわれており、上記
の切込溝を形成するための装置等が種々提案されてい
る。Conventionally, by forming a line-shaped cut groove having a predetermined depth on the grass surface, it has been carried out to facilitate the penetration of moisture, oxygen, fertilizer, etc. into the soil and promote the growth of lawn. Various devices and the like for forming the notch groove have been proposed.
例えば特開平１−101802号公報のように、自走機に板状
の切込刃を前後方向に揺動可能に取付け、その切込刃を
土中に挿入した状態で前後方向に振動させながら自走機
を前進させて切込溝を形成するものは、切込刃を前進さ
せる際の抵抗が大きいため大きな動力を必要とし、装置
構成が複雑かつ大型化して製作コストが嵩むと共に、重
量が増して芝を傷める等のおそれがある。For example, as disclosed in JP-A-1-101802, a plate-shaped cutting blade is attached to a self-propelled machine so as to be swingable in the front-rear direction, and the cutting blade is oscillated in the front-rear direction while being inserted into the soil. The one that advances the self-propelled machine to form the cutting groove requires a large amount of power because the resistance when moving the cutting blade is large, the device configuration is complicated and large, the manufacturing cost increases, and the weight is large. There is a risk of damaging the grass.
これに対し、例えば特開昭63−44801号公報や実開昭60
−179107号もしくは同昭62−91910号公報のように切込
刃を回転させて切込溝を形成するものは、比較的抵抗が
少なく小さな動力で駆動できるので装置全体を小型化で
きるが、従来のものは芝の根や地下茎を必ずしも良好に
切断することができず、往々にして根や茎もしくは土等
が、表面に浮き上がって切込溝の切り口をきれいに仕上
げることができない等の不具合があった。On the other hand, for example, Japanese Unexamined Patent Publication No. 63-44801 and Japanese Utility Model Publication No. 60
The one in which the cutting blade is rotated to form the cutting groove as in JP-A-179107 or JP-A-62-91910 can be driven by a small power with a relatively small resistance, so that the entire apparatus can be downsized. However, it is not always possible to cut the grass roots and rhizomes well, and there are often problems such as roots, stems, or dirt rising to the surface and making it impossible to cleanly cut the cut grooves. It was
本発明は上記の問題点に鑑みて提案されたもので、前記
後者のように切込刃を回転させて切込溝を形成するもの
において、切込溝の切り口をきれいに仕上げることので
きる芝生切込装置を提供することを目的とする。The present invention has been proposed in view of the above problems, and in the case of forming a cutting groove by rotating the cutting blade as in the latter, the lawn cutting that can finish the cut groove cutting end cleanly. It is intended to provide an embedded device.
上記の目的を達成するために本発明による芝生切込装置
は以下の構成としたものである。In order to achieve the above object, the lawn cutting device according to the present invention has the following configuration.
即ち、自走機の走行車輪軸と略平行に設けた回転軸に、
放射方向に突出する全体略扇形の板状の切込刃を周方向
に複数枚一定の間隔を置いて取付け、その各扇形の切込
刃の回転方向前側の辺に外周縁側に行くに従って回転方
向後側に傾斜する傾斜部を設けると共に、上記外周縁の
略中央部に凹部を設け、その凹部よりも回転方向前側の
外周縁と上記傾斜部とに沿って略円弧状の刃先を形成す
ると共に、上記凹部よりも回転方向後側の外周縁に略円
弧状の刃先を形成したことを特徴とする。That is, on the rotating shaft provided substantially parallel to the traveling wheel axis of the self-propelled machine,
A plurality of generally fan-shaped plate-shaped cutting blades protruding in the radial direction are attached at regular intervals in the circumferential direction, and the rotation direction of each fan-shaped cutting blade in the direction of rotation toward the outer peripheral edge on the front side While providing an inclined portion that is inclined to the rear side, a concave portion is provided in a substantially central portion of the outer peripheral edge, and a substantially arcuate cutting edge is formed along the outer peripheral edge on the front side in the rotation direction of the concave portion and the inclined portion. It is characterized in that a substantially arcuate blade edge is formed on the outer peripheral edge on the rear side in the rotational direction of the recess.
上記のように各扇形の切込刃の回転方向前側の辺に外周
縁側に行くに従って回転方向後ろ側に傾斜する傾斜部を
設けると共に、上記外周縁の略中央部に凹部を設け、そ
の凹部よりも回転方向前側の外周縁と上記傾斜部とに沿
って略円弧状の刃先を形成すると共に、上記凹部よりも
回転方向後側の外周縁に略円弧状の刃先を形成したこと
によって、芝の根や地下茎を切断する際、先ず上記の凹
部よりも回転方向前側の外周縁と上記傾斜部とに沿って
形成した略円弧状の刃先により根や茎を擦るようにして
切込み、その前側の刃先で切れなかったときは、次の後
ろ側の刃先で更に切込んで切断するもので、根や茎が無
理に引っ張られたり押し切られることなく、スムースに
切断されて切込溝の切り口をきれいに仕上げることが可
能となる。As described above, an inclined portion is provided on the front side in the rotational direction of each fan-shaped cutting blade in the rotational direction toward the outer peripheral side toward the outer peripheral side, and a concave portion is provided in the substantially central portion of the outer peripheral edge. Also forming a substantially arcuate blade edge along the outer peripheral edge on the front side in the rotational direction and the inclined portion, and by forming a substantially arcuate blade edge on the outer peripheral edge on the rear side in the rotational direction than the recess, When cutting the roots or rhizomes, first cut the roots or stems by rubbing the roots or stems with a roughly arcuate cutting edge formed along the outer peripheral edge on the front side in the rotational direction of the concave portion and the inclined portion, and the cutting edge on the front side thereof. If you can't cut it, you can cut it further by cutting it with the blade on the back side next to it. It becomes possible.
以下、本発明による芝生切込装置を図に示す実施例に基
づいて具体的に説明する。Hereinafter, the lawn cutting device according to the present invention will be specifically described based on an embodiment shown in the drawings.
第１図は本発明による芝生切込装置の一実施例を示す側
面図、第２図はその要部の正面図である。FIG. 1 is a side view showing an embodiment of the lawn cutting device according to the present invention, and FIG. 2 is a front view of the main part thereof.
図において、１は自走機体、２はその機体１に搭載した
エンジン、３は走行車輪であり、その車輪軸3aにエンジ
ン２からの動力が図に省略したチェーン等を介して伝達
される。In the figure, 1 is a self-propelled aircraft, 2 is an engine mounted on the aircraft 1, 3 is a traveling wheel, and power from the engine 2 is transmitted to a wheel shaft 3a thereof through a chain or the like not shown in the figure.
その走行車輪３の前方に車輪軸3aと略平行に回転軸４が
設けられ、その回転軸４に放射方向に突出する板状の切
込刃５が取付けられている。６は上記回転軸４の両端支
持部材を兼ねるカバー、７は伝動ケースであり、そのケ
ース７内にエンジンからの動力を回転軸に伝達するチェ
ーン８・スプロケット９等が収容されている。10は上記
カバー６に支軸11で上下傾動可能に取付けた案内輪であ
り、ハンドル付のねじ杆12を回動して案内輪10を上下動
させることにより切込刃５の土中への進入深さを調節で
きるように構成されている。A rotary shaft 4 is provided in front of the traveling wheel 3 substantially parallel to the wheel shaft 3a, and a plate-shaped cutting blade 5 protruding in the radial direction is attached to the rotary shaft 4. Reference numeral 6 denotes a cover that also serves as a member for supporting both ends of the rotary shaft 4, and 7 denotes a transmission case. In the case 7, a chain 8, a sprocket 9 and the like for transmitting the power from the engine to the rotary shaft are accommodated. Reference numeral 10 denotes a guide wheel attached to the cover 6 so as to be vertically tiltable by a support shaft 11. The guide wheel 10 is vertically moved by rotating a screw rod 12 with a handle to move the cutting blade 5 into the soil. It is configured so that the penetration depth can be adjusted.
上記の切込刃５は、回転軸４の軸方向複数箇所に一体的
に設けた円板14等に、それぞれボルト15a・ナット15b等
で周方向に複数個ほぼ等間隔に取付けたもので、図の場
合は回転軸４の軸方向６箇所に円板14を略等間隔に取付
け、その各円板14にそれぞれ切込刃５を４枚ずつ取付け
た例を示す。The above-mentioned cutting blades 5 are those which are attached to a disk 14 or the like integrally provided at a plurality of axial positions of the rotary shaft 4 by bolts 15a, nuts 15b, etc. at a substantially equal interval in the circumferential direction, In the case of the drawing, an example is shown in which discs 14 are attached to the rotary shaft 4 at six positions in the axial direction at substantially equal intervals, and four cutting blades 5 are attached to each disc 14.
その各切込刃５は第３図〜第５図に示すように全体略扇
形の板状に形成され、その各扇形の切込刃５の回転方向
前側の辺5aに外周縁5b側に行くに従って回転方向後側に
傾斜する傾斜部5cを設けると共に、上記外周縁5bの略中
央部に凹部50を設け、その凹部50よりも回転方向前側の
外周縁5bと上記傾斜部5cとに沿って略円弧状の刃先51を
形成すると共に、上記凹部50よりも回転方向後側の外周
縁5bに略円弧状の刃先52を形成したものである。53は取
付孔、54は土中に進入したときの抵抗軽減用の開口を示
す。Each cutting blade 5 is formed in a generally fan-shaped plate shape as shown in FIGS. 3 to 5, and each fan-shaped cutting blade 5 goes to the outer peripheral edge 5b side on the side 5a on the front side in the rotation direction. According to the above, an inclined portion 5c that is inclined rearward in the rotation direction is provided, and a recess 50 is provided substantially in the center of the outer peripheral edge 5b, along the outer peripheral edge 5b and the inclined portion 5c that are on the front side of the recess 50 in the rotation direction. In addition to forming a substantially arcuate cutting edge 51, a substantially arcuate cutting edge 52 is formed on the outer peripheral edge 5b on the rear side in the rotational direction of the recess 50. Reference numeral 53 is a mounting hole, and 54 is an opening for reducing resistance when entering the soil.
その切込刃５の主な各部の寸法の一例を示すと以下の通
りである。即ち、第３図において、１＝240mm、l2＝2
74mm、l3＝98mm、θ１＝45°、θ２＝22.5°、θ３＝20
°、θ４＝45°、θ５＝10°、R1＝45mm、R2＝50mm、ま
た切込刃５の厚さｔ＝1.35mmである。An example of the dimensions of each main part of the cutting blade 5 is as follows. That is, in FIG. 3, 1 = 240 mm, l2 = 2
74mm, l3 = 98mm, θ1 = 45 °, θ2 = 22.5 °, θ3 = 20
°, θ4 = 45 °, θ5 = 10 °, R1 = 45 mm, R2 = 50 mm, and the cutting blade 5 has a thickness t = 1.35 mm.
上記の構成において、ゴルフ場のグリーンなどの芝面に
切込溝を形成するに当たっては、案内輪10の高さを調節
して切込刃５の土中への進入深さを設定し、エンジン２
を駆動する。すると、走行車輪３が第１図矢示Ａ方向に
所定の速度で回転して矢示ｂ方向に前進しながら切込刃
５が同方向（矢示ｃ方向）に回転するもので、そのとき
芝の根や地下茎は、第５図に示すように先ず回転方向前
側の辺5aの傾斜部5cと、前記凹部50よりも回転方向前側
の外周縁5bとに沿って形成した円弧状の刃先51により、
根や茎を擦るようにして切り込まれる。そして、その前
側の刃先51で切れなかったときは、次の回転方向後ろ側
の刃先52が前進しながら回転して上記の切込箇所を更に
切込んで、根や茎を無理に引っ張ったり無理に押し切る
ことなく、スムースに切断することができるものであ
る。又その切り口は鋭利な刃先51・52によって、きれい
に切断されるから、芝の回復が早く、しかも根や茎もし
くは土が表面に浮き上がるようなことがない。さらに上
記の切込刃５による切込深さは適宜調整可能であり、例
えば15〜16cm程度もしくはそれ以上の深さまで切込むこ
とも可能である。それによって水はけ等をよくすること
ができる。In the above configuration, when forming a cut groove on a grass surface such as a golf course green, the height of the guide wheel 10 is adjusted to set the depth of penetration of the cutting blade 5 into the soil. Two
To drive. Then, the traveling wheel 3 rotates at a predetermined speed in the direction of arrow A in FIG. 1 and moves forward in the direction of arrow b while the cutting blade 5 rotates in the same direction (direction of arrow c). As shown in FIG. 5, the grass roots and rhizomes first have an arcuate cutting edge 51 formed along an inclined portion 5c of a side 5a on the front side in the rotation direction and an outer peripheral edge 5b on the front side in the rotation direction of the recess 50. Due to
It is cut by rubbing the roots and stems. Then, when the cutting edge 51 on the front side cannot be cut, the cutting edge 52 on the rear side in the next rotation direction rotates while advancing and further cuts the above-mentioned cut portion, and it is impossible to pull the root or the stem by force. It can be cut smoothly without pushing it down. Also, the cut edge is cut cleanly by the sharp cutting edges 51, 52, so that the lawn recovers quickly and the roots, stems or soil do not float on the surface. Further, the cutting depth by the cutting blade 5 can be adjusted as appropriate, and it is possible to cut to a depth of, for example, about 15 to 16 cm or more. Thereby, drainage etc. can be improved.
なお図示例は、いわゆる歩用型の自走機に適用した例を
示したが、乗用型の自走機にも適用可能である。Although the illustrated example is applied to a so-called walking type self-propelled machine, it is also applicable to a riding type self-propelled machine.
以上説明したように、本発明による芝生切込装置は、自
走機１の走行車輪軸3aと略平行に設けた回転軸４に、放
射方向に突出する全体略扇形の板状の切込刃５を周方向
に複数枚一定の間隔を置いて取付け、その各扇形の切込
刃５の回転方向前側の辺5aに外周縁5b側に行くに従って
回転方向後側に傾斜する傾斜部5cを設けると共に、上記
外周縁5bの略中央部に凹部50を設け、その凹部50よりも
回転方向前側の外周縁5bと上記傾斜部5cとに沿って略円
弧状の刃先51を形成すると共に、上記凹部50よりも回転
方向後側の外周縁5bに略円弧状の刃先52を形成したか
ら、その２つの刃先で芝の根や茎をいわば２度切りする
ようにして切断することができるもので、１回で無理に
押し切ることなくスムースに、かつ確実に切断すること
が可能となる。従って、芝の根や地下茎が無理に引っ張
られて浮き上がったり、土が盛り上がるようなことがな
く、切込溝の切り口をきれいに仕上げることができるも
のである。As described above, the lawn cutting device according to the present invention has a generally fan-shaped plate-shaped cutting blade that protrudes in the radial direction on the rotary shaft 4 provided substantially parallel to the traveling wheel shaft 3a of the self-propelled machine 1. 5 are attached at regular intervals in the circumferential direction, and an inclined portion 5c that inclines rearward in the rotational direction as the outer peripheral edge 5b side is provided on the side 5a on the front side in the rotational direction of each fan-shaped cutting blade 5. At the same time, a concave portion 50 is provided at a substantially central portion of the outer peripheral edge 5b, and a substantially arcuate blade edge 51 is formed along the outer peripheral edge 5b on the rotation direction front side of the concave portion 50 and the inclined portion 5c, and the concave portion is formed. Since a substantially arcuate blade edge 52 is formed on the outer peripheral edge 5b on the rear side of the rotational direction with respect to 50, it is possible to cut the roots and stems of lawn so to speak twice with these two blade edges. It is possible to cut smoothly and surely without pushing it by force once. Therefore, the roots and rhizomes of the turf are not forcibly pulled up and the soil does not rise, and the cut end of the cut groove can be finished neatly.
第１図は本発明による芝生切込装置の一実施例を示す側
面図、第２図はその要部の正面図、第３図は切込刃の拡
大図、第４図はその一部の平面図、第５図は切込溝を形
成している状態の側面図である。 １は自走機体、２はエンジン、３は走行車輪、４は回転
軸、５は切込刃、50は凹部、51・52は刃先。FIG. 1 is a side view showing an embodiment of the lawn cutting device according to the present invention, FIG. 2 is a front view of a main part thereof, FIG. 3 is an enlarged view of a cutting blade, and FIG. 4 is a part thereof. FIG. 5 is a plan view and FIG. 5 is a side view showing a state in which a cut groove is formed. 1 is a self-propelled aircraft, 2 is an engine, 3 is a traveling wheel, 4 is a rotating shaft, 5 is a cutting blade, 50 is a concave portion, and 51 and 52 are cutting edges.
Claims (1)
軸に、放射方向に突出する全体略扇形の板状の切込刃を
周方向に複数枚一定の間隔を置いて取付け、その各扇形
の切込刃の回転方向前側の辺に外周縁側に行くに従って
回転方向後側に傾斜する傾斜部を設けると共に、上記外
周縁の略中央部に凹部を設け、その凹部よりも回転方向
前側の外周縁と上記傾斜部とに沿って略円弧状の刃先を
形成すると共に、上記凹部よりも回転方向後側の外周縁
に略円弧状の刃先を形成したことを特徴とする芝生切込
装置。1. A plurality of generally fan-shaped plate-shaped cutting blades projecting in a radial direction are attached to a rotary shaft provided substantially parallel to a traveling wheel shaft of a self-propelled machine at regular intervals in the circumferential direction. , Each of the fan-shaped cutting blades is provided with an inclined portion on the front side in the rotation direction toward the outer peripheral edge side, and is inclined toward the rear side in the rotational direction, and a concave portion is provided in the substantially central portion of the outer peripheral edge to rotate more than the concave portion. In addition to forming a substantially arcuate cutting edge along the outer peripheral edge on the front side in the direction and the inclined portion, the grass cutting is characterized in that a substantially arcuate cutting edge is formed on the outer peripheral edge on the rear side in the rotational direction of the recess. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2156317A JPH0748961B2 (en) | 1990-06-14 | 1990-06-14 | Lawn cutting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2156317A JPH0748961B2 (en) | 1990-06-14 | 1990-06-14 | Lawn cutting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0451801A JPH0451801A (en) | 1992-02-20 |
| JPH0748961B2 true JPH0748961B2 (en) | 1995-05-31 |
Family
ID=15625159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2156317A Expired - Fee Related JPH0748961B2 (en) | 1990-06-14 | 1990-06-14 | Lawn cutting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0748961B2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53103832A (en) * | 1977-02-11 | 1978-09-09 | Yukio Ueno | Cutting machine for recovering pasture field |
| JPS6253618U (en) * | 1985-09-24 | 1987-04-03 |
-
1990
- 1990-06-14 JP JP2156317A patent/JPH0748961B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0451801A (en) | 1992-02-20 |
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| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |