JPH0418352Y2 - - Google Patents
Info
- Publication number
- JPH0418352Y2 JPH0418352Y2 JP1986034091U JP3409186U JPH0418352Y2 JP H0418352 Y2 JPH0418352 Y2 JP H0418352Y2 JP 1986034091 U JP1986034091 U JP 1986034091U JP 3409186 U JP3409186 U JP 3409186U JP H0418352 Y2 JPH0418352 Y2 JP H0418352Y2
- Authority
- JP
- Japan
- Prior art keywords
- nut
- mounting bolt
- rotary disk
- brush cutter
- cutting blade
- 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
- Harvester Elements (AREA)
Description
この考案は刈払機に関し、さらに詳しくは、回
転デイスクに複数本の刈刃を等間隔に取付けて構
成した刈払機に関する。
This invention relates to a brush cutter, and more specifically, to a brush cutter constructed by attaching a plurality of cutting blades at equal intervals to a rotary disk.
回転デイスクに刈刃を複数本等間隔に取付けた
構成の刈払機は、第４図に示されているように、
回転デイスク１の周囲にその径方向に沿つて３〜
４本の刈刃２が配置され、各刈刃２が２本のボル
ト３で固定されたものである。
As shown in Fig. 4, a brush cutter has a structure in which a plurality of cutting blades are attached at equal intervals to a rotating disk.
3 to 3 along the radial direction around the rotating disk 1
Four cutting blades 2 are arranged, and each cutting blade 2 is fixed with two bolts 3.
上述したような刈刃２の取付け構造では、草刈
りや、ブツシユ刈り作業中に刈刃が障害物に当つ
た場合、その反力で生じる剪断力を２本のボルト
のうち、外側のボルトが特に大きく受け、甚しい
場合には回転デイスク１に穿けてあるボルト孔が
変形、破損したり、ボルトが剪断されてしまう問
題があつた。
本考案は、このような問題を解消すべく案出さ
れたものであり、取付ボルトによつて回転デイス
クの取付ボルト孔が破損することを防止し、刈刃
の取付構造を頑丈にすることを目的とする。
In the mounting structure of the cutting blade 2 as described above, when the cutting blade hits an obstacle during grass mowing or bush mowing work, the outer bolt of the two bolts is particularly effective in absorbing the shearing force generated by the reaction force. In severe cases, the bolt holes formed in the rotary disk 1 may be deformed or damaged, or the bolts may be sheared. The present invention was devised to solve these problems, and aims to prevent the mounting bolt hole of the rotary disk from being damaged by the mounting bolt, and to make the mounting structure of the cutting blade more robust. purpose.
本考案は、その目的を達成するために、半径方
向外向きに突出する複数の刈刃を円周方向に沿つ
て等間隔で回転デイスクに取り付けた刈払機にお
いて、回転デイスクに穿設した取付けボルト孔
と、刈刃を挟んで前記取付けボルト孔に挿入され
る取付けボルトと、該取付けボルトに螺合するナ
ツトと、該ナツトを回り止め状態で保持するナツ
ト受が形成されたナツト座板と、該ナツト座板と
前記回転デイスクとの間に介装されるワツシヤ板
とを備えており、該ワツシヤ板に、前記回転デイ
スクの取付ボルト孔に嵌合するボス部が形成され
ていることを特徴とする。
To achieve this purpose, the present invention provides a brush cutter in which a plurality of cutting blades protruding radially outward are attached to a rotating disk at equal intervals along the circumference, and mounting bolts are provided in the rotating disk. a nut seat plate formed with a hole, a mounting bolt that is inserted into the mounting bolt hole with the cutting blade in between, a nut that is screwed onto the mounting bolt, and a nut receiver that holds the nut in a non-rotating state; A washer plate is provided between the nut seat plate and the rotary disk, and a boss portion is formed on the washer plate to fit into a mounting bolt hole of the rotary disk. shall be.
本考案の刈払機においては、取付けボルト及び
ナツトは、ナツト座板及びワツシヤ板からなるナ
ツトホルダを介して回転デイスクのボルト孔に装
着されるため、回転デイスクに直接接触すること
がない。刈払い作業中に大きな剪断力が取付けボ
ルトに加わつても、剪断力がナツトホルダで受け
止められ、回転デイスクに直接伝わらない。その
結果、回転デイスクに設けたボルト孔の変形や破
損が確実に防止される。
In the brush cutter of the present invention, the mounting bolt and nut are attached to the bolt holes of the rotary disk through the nut holder consisting of the nut seat plate and the washer plate, so that they do not come into direct contact with the rotary disk. Even if a large shearing force is applied to the mounting bolt during brush cutting, the shearing force is absorbed by the nut holder and is not directly transmitted to the rotating disk. As a result, deformation and damage to the bolt holes provided in the rotary disk are reliably prevented.
以下、この考案の実施例を第１図ないし、第３
図により説明する。これらの図において、符号１
１は刈払機を構成する回転デイスクを示し、エン
ジン１２の出力が操作主杆１３中に配置された動
力伝達軸を介して減速機１４に伝えられ、その減
速機１４の出力軸に取付けられた前記回転デイス
ク１１が駆動される。
この回転デイスク１１の径方向に沿つて３〜４
本の複数の刈刃１５が等間隔に配置される。
そして、回転デイスク１１には、刈刃１５の取
付け位置にボルト孔１１ａが２個穿けられる。
このボルト孔１１ａに対応して、刈刃１５にも
ボルト孔１５ａが２個穿けられる。この刈刃１５
は回転デイスク１１の下側に取付けられ、先端部
１５ｂは回転デイスク１１の最外周より突出して
いる。
さらに、回転デイスク１１の上側には、取付け
ボルト１６がねじ込まれるナツト座となるナツト
ホルダ１７があてがわれる。このナツトホルダ１
７は、取付けボルト１６のナツト１６ａを収容で
きるナツト収容部としての６角形のナツト受１７
ａが形成され、ナツト座板１７Ａに対してワツシ
ヤ機能をもつワツシヤ板１７Ｂが重ねられ、ナツ
トホルダ１７のワツシヤ板１７Ｂには、回転デイ
スク１１のボルト孔１１ａに嵌まるボス部１７ｂ
が突出形成され、このボス部１７ｂを前記取付け
ボルト１６が貫くことで、刈刃１５を締着できる
ようになつている。
ナツトホルダ１７のボス部１７ｂは２つのナツ
ト受１７ａのうち、径方向外側のものにだけ形成
したものを示したが、大きい剪断力が加わる部分
だけを保護する目的だけにとどまらず、ボルト孔
全部の破損を防止すると云う見地では、全部のナ
ツト受１７ａに対応してワツシヤ板１７Ｂにボス
部１７ｂを形成することができる。
さらに、ナツトホルダ１７の上側は回転デイス
ク１１にボルト１８ａで固定された上部カバー１
８で覆われ、取付けボルト１６を緩めたときナツ
ト１６ａが脱落しないようになつている。
Examples of this invention are shown in Figures 1 to 3 below.
This will be explained using figures. In these figures, the symbol 1
Reference numeral 1 indicates a rotating disk constituting the brush cutter, in which the output of an engine 12 is transmitted to a reducer 14 via a power transmission shaft disposed in a main operating rod 13, and is attached to the output shaft of the reducer 14. The rotary disk 11 is driven. 3 to 4 along the radial direction of this rotary disk 11
A plurality of book cutting blades 15 are arranged at equal intervals. Two bolt holes 11a are bored in the rotary disk 11 at the mounting positions of the cutting blades 15. Corresponding to the bolt holes 11a, the cutting blade 15 is also provided with two bolt holes 15a. This cutting blade 15
is attached to the lower side of the rotary disk 11, and the tip portion 15b protrudes from the outermost periphery of the rotary disk 11. Furthermore, a nut holder 17 serving as a nut seat into which a mounting bolt 16 is screwed is provided above the rotary disk 11. This nut holder 1
7 is a hexagonal nut receiver 17 as a nut accommodating portion that can accommodate the nut 16a of the mounting bolt 16.
A washer plate 17B having a washer function is stacked on the nut seat plate 17A, and the washer plate 17B of the nut holder 17 has a boss portion 17b that fits into the bolt hole 11a of the rotary disk 11.
is formed protrudingly, and the mounting bolt 16 passes through this boss portion 17b, so that the cutting blade 15 can be fastened. The boss portion 17b of the nut holder 17 is shown as being formed only on the radially outer one of the two nut receivers 17a, but the purpose is not only to protect only the portion to which large shearing force is applied, but also to protect the entire bolt hole. From the standpoint of preventing damage, boss portions 17b can be formed on the washer plate 17B to correspond to all the nut receivers 17a. Further, the upper side of the nut holder 17 has an upper cover 1 fixed to the rotary disk 11 with bolts 18a.
8 to prevent the nut 16a from falling off when the mounting bolt 16 is loosened.
以上の説明から明らかなように、この考案の刈
払機によれば、ナツトホルダのボス部が回転デイ
スクに穿けたボルト孔に嵌まり、このボス部を貫
いて刈刃取付けボルトを挿通して締着する構成で
あるから、刈刃が障害物に当つた際に取付けボル
トが受ける反力としての剪断力は、その一部をボ
ス部が負担して回転デイスクのボルト孔を破損す
ることがない。
As is clear from the above explanation, according to the brush cutter of this invention, the boss part of the nut holder fits into the bolt hole drilled in the rotary disk, and the cutting blade mounting bolt is inserted through this boss part and tightened. Because of this structure, when the cutting blade hits an obstacle, the shearing force as a reaction force that the mounting bolt receives is partially borne by the boss portion, and the bolt hole of the rotary disk is not damaged.
第１図はこの考案による刈払機の全体斜面図、
第２図は第１図−線拡大断面図、第３図は上
部カバーを取除いた一部斜面図、第４図は従来の
刈払機における刈刃の取付部分を示す断面図であ
る。
１１……回転デイスク、１１ａ……ボルト孔、
１５……刈刃、１５ａ……ボルト孔、１５ｂ……
先端部、１６……取付けボルト、１６ａ……ナツ
ト、１７……ナツトホルダ、１７ａ……ナツト
受、１７ｂ……ボス部、１８……上部カバー。
Figure 1 is an overall slope view of the brush cutter according to this invention.
FIG. 2 is an enlarged cross-sectional view taken along the line of FIG. 1, FIG. 3 is a partial perspective view with the upper cover removed, and FIG. 4 is a cross-sectional view showing the mounting portion of the cutting blade in a conventional brush cutter. 11... Rotating disk, 11a... Bolt hole,
15...Mowing blade, 15a...Bolt hole, 15b...
Tip, 16...Mounting bolt, 16a...Nut, 17...Nut holder, 17a...Nut holder, 17b...Boss portion, 18...Top cover.
Claims (1)
向に沿つて等間隔で回転デイスクに取り付けた刈
払機において、回転デイスク１１に穿設した取付
けボルト孔１１ａと、刈刃１５を挟んで前記取付
けボルト孔１１ａに挿入される取付けボルト１６
と、該取付けボルト１６に螺合するナツト１６ａ
と、該ナツト１６ａを回り止め状態で保持するナ
ツト受１７ａが形成されたナツト座板１７Ａと、
該ナツト座板１７Ａと前記回転デイスク１１との
間に介装されるワツシヤ板１７Ｂとを備えてお
り、該ワツシヤ板１７Ｂに、前記回転デイスク１
１の取付ボルト孔１１ａに嵌合するボス部１７ｂ
が形成されていることを特徴とする刈払機。 In a brush cutter in which a plurality of cutting blades protruding outward in the radial direction are attached to a rotating disk at equal intervals along the circumferential direction, the mounting bolt holes 11a drilled in the rotating disk 11 and the above-mentioned cutting blades are arranged on both sides of the cutting blade 15. Mounting bolt 16 inserted into mounting bolt hole 11a
and a nut 16a that is screwed onto the mounting bolt 16.
and a nut seat plate 17A on which a nut receiver 17a is formed to hold the nut 16a in a non-rotating state.
A washer plate 17B is provided between the nut seat plate 17A and the rotary disk 11, and the washer plate 17B is provided with the rotary disk 1.
A boss portion 17b that fits into the mounting bolt hole 11a of No. 1
A brush cutter characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986034091U JPH0418352Y2 (en) | 1986-03-10 | 1986-03-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986034091U JPH0418352Y2 (en) | 1986-03-10 | 1986-03-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62144432U JPS62144432U (en) | 1987-09-11 |
| JPH0418352Y2 true JPH0418352Y2 (en) | 1992-04-23 |
Family
ID=30842312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986034091U Expired JPH0418352Y2 (en) | 1986-03-10 | 1986-03-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0418352Y2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57183815U (en) * | 1981-05-19 | 1982-11-22 |
-
1986
- 1986-03-10 JP JP1986034091U patent/JPH0418352Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62144432U (en) | 1987-09-11 |
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