JP3445146B2 - Cover device for rotary tiller - Google Patents
Cover device for rotary tillerInfo
- Publication number
- JP3445146B2 JP3445146B2 JP13677398A JP13677398A JP3445146B2 JP 3445146 B2 JP3445146 B2 JP 3445146B2 JP 13677398 A JP13677398 A JP 13677398A JP 13677398 A JP13677398 A JP 13677398A JP 3445146 B2 JP3445146 B2 JP 3445146B2
- Authority
- JP
- Japan
- Prior art keywords
- cover body
- cover
- attached
- hardness
- elastic material
- 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)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ロータリ耕耘機の
カバー装置に係り、より具体的には、耕耘作業時におけ
る土壌の付着防止および付着成長の抑制を図ったカバー
装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cover device for a rotary cultivator, and more particularly to a cover device for preventing soil from adhering to soil and suppressing adhesion growth during cultivating work.
【０００２】[0002]
【従来の技術】耕耘作業においてカバー体（耕耘カバ
ー）に土壌が付着したり付着成長するのを防止乃至抑制
する技術（以下、付着防止技術という）として多数が提
案されまた実用化されている。この付着防止技術を大別
すると、実開平３−４３９０３号公報、特開平５−１５
２０２号公報等で開示されているように、カバー体の内
面（耕耘部に面する側をいい、以外同じ）に空間を形成
した状態で弾性カバーを装着し、該弾性カバーの弾性変
形によって付着防止するものがある（以下、従来例の１
という）。2. Description of the Related Art Many techniques have been proposed and put to practical use as a technique (hereinafter referred to as an adhesion prevention technique) for preventing or suppressing soil from adhering or accumulating and growing on a cover body (cultivating cover) in tillage work. This adhesion prevention technology is roughly classified into Japanese Utility Model Laid-Open No. 3-43903 and JP-A-5-15.
As disclosed in Japanese Patent Publication No. 202, etc., an elastic cover is attached in a state where a space is formed on the inner surface of the cover body (the side other than the side facing the cultivated part, the same as above), and the elastic cover is attached by elastic deformation. There is something to prevent (hereinafter, 1 of the conventional example)
That).
【０００３】また、特開平７−２５５２０３号公報等で
開示されているように、カバー体の内面に硬度を異にす
る弾性体を階層構造（積層構造）として備えたものがあ
る（以下、従来例の２という）。Further, as disclosed in Japanese Patent Application Laid-Open No. 7-255203, there is a cover body provided with an elastic body having a different hardness as a layered structure (hereinafter referred to as a conventional structure). (Example 2).
【０００４】[0004]
【発明が解決しようとする課題】前述した従来例の１お
よび２はいずれもそれなりに有用ではあるものの、次に
掲げるような課題（問題点）がある。：従来例の１
は、弾性カバーの弾性変形によって所謂振動作用によっ
て土付着の防止乃至付着成長の抑制を図るものであるか
ら、弾性カバーの早期破れ、損傷等があり、耐久性の点
で劣るものであった。 従来例の２は、硬度が異なる
弾性体を積層構造としたものであるから、耐久性の点で
は従来例の１に比べて有利である反面、弾性変形量が少
ないことから土付着の防止乃至付着成長の抑制という面
では、従来例の２に比べてものであった。Although the above-mentioned conventional examples 1 and 2 are useful as such, they have the following problems (problems). : Conventional example 1
In order to prevent soil adhesion or suppress adhesion growth by so-called vibration action due to elastic deformation of the elastic cover, the elastic cover is inferior in terms of durability due to early tearing, damage and the like. Since the conventional example 2 has a laminated structure of elastic bodies having different hardnesses, it is more advantageous in durability than the conventional example 1, but on the other hand, the elastic deformation amount is small, so that soil adhesion is prevented. In terms of suppressing the adhesion growth, it was better than the conventional example 2.
【０００５】そこで本発明は、弾性体（付属カバー体）
の硬度、発泡率等を適正なものとすることで、耐久性に
優れしかも付着防止乃至成長抑制に優れたカバー装置を
提供することが目的である。Therefore, the present invention provides an elastic body (attached cover body).
It is an object of the present invention to provide a cover device which is excellent in durability as well as in adhesion prevention and growth suppression by adjusting the hardness, foaming rate, etc.
【０００６】[0006]
【課題を解決するための手段】本発明は、耕耘部の外周
を覆うカバー体を有するロータリ耕耘機のカバー装置に
おいて、前述の目的を達成するために、次の技術的手段
を講じている。すなわち、請求項１に係る本発明のカバ
ー装置は、前記カバー体の耕耘部側に、少なくとも２層
構造でかつ硬度が高低とされた付属カバー体が備えられ
ており、該付属カバー体は、内側（耕耘部に近い側）の
第１付属カバー体と外側（耕耘部に遠い側）の第２付属
カバー体とで構成されており、前記第１付属カバー体の
硬度が低く第２付属カバー体の硬度が高い弾性材料で作
成されていることを特徴とするものである。The present invention takes the following technical means in order to achieve the above-mentioned object in a cover device for a rotary cultivator having a cover body for covering the outer circumference of a tilling part. That is, the cover device of the present invention according to claim 1 is provided with an accessory cover body having at least a two-layer structure and having high and low hardness on the tilling side of the cover body, and the accessory cover body, It is composed of a first attached cover body on the inner side (a side closer to the tillage part) and a second attached cover body on the outer side (a side farther from the tiller part), and the second attached cover body has a low hardness. It is characterized by being made of an elastic material having a high body hardness.
【０００７】このような構成を採用していることによ
り、耕耘部の回転駆動による耕耘作業中に、衝突乃至持
廻される土、砂利等は、付属カバー体が層構造であるこ
とから、引裂き、破れ等は少なく耐久性が維持される一
方で、第１付属カバー体の硬度が低くこれ故、衝突乃至
持廻されるときとの弾性変形量は大きいので土の付着は
防止されるし、該第１付属カバー体に過度の弾性変形は
第２付属カバー体の硬度が高いことから抑制されるので
ある。前記第２付属カバー体は、芯材とこの芯材を被包
若しくは埋設した弾性材料とで構成することができ（請
求項２）、また、前記第２付属カバー体は、カバー体に
対して密着又はカバー体との間で空間部を有して装着す
ることができる（請求項３）。By adopting such a structure, during the tilling work by the rotation drive of the tiller, soil, gravel, etc. collided or carried around are torn apart because the attached cover body has a layered structure, While there is little breakage and durability is maintained, the hardness of the first attached cover body is low, and therefore the amount of elastic deformation at the time of collision or rotation is large, so that adhesion of soil is prevented. Excessive elastic deformation of the first accessory cover body is suppressed because the hardness of the second accessory cover body is high. The second accessory cover body may be composed of a core material and an elastic material in which the core material is encapsulated or embedded (claim 2), and the second accessory cover body may be formed with respect to the cover body. It can be attached so as to have close contact or a space between the cover and the cover (claim 3).
【０００８】更に、請求項４に係る本発明のカバー装置
は、前記カバー体の耕耘部側に、発泡率が１５％以上の
発泡弾性材料からなる付属カバー体を備えていることを
特徴とするものである。また、請求項５に係る本発明の
カバー装置は、前記カバー体の耕耘部側に、少なくとも
２層構造でかつ発泡率を異にする発泡弾性材料からなる
付属カバー体を備えていることを特徴とするものであ
る。更に、請求項６に係る本発明のカバー装置は、耕耘
部の外周を覆うカバー体を、耕耘部の上方を覆う主カバ
ー体と耕耘部の後方を覆う副カバー体として構成したロ
ータリ耕耘機のカバー装置において、前記主カバー体お
よび副カバー体の耕耘部側にそれぞれ硬度を異にする弾
性材料からなる付属カバー体が備えられており、主カバ
ー体の付属カバー体を構成する弾性材料の硬度が副カバ
ー体の付属カバー体を構成する弾性材料の硬度に対して
高く設定されていることを特徴とするものである。Further, the cover device of the present invention according to claim 4 is characterized in that an attached cover body made of a foamed elastic material having a foaming rate of 15% or more is provided on the tillage side of the cover body. It is a thing. Further, the cover device of the present invention according to claim 5 is characterized in that an attached cover body made of a foamed elastic material having at least a two-layer structure and having a different foaming rate is provided on the tillage side of the cover body. It is what Further, the cover device of the present invention according to claim 6 is a rotary cultivator in which a cover body that covers the outer periphery of the tiller is configured as a main cover body that covers the upper part of the tiller and a sub-cover body that covers the rear of the tiller. In the cover device, the main cover body and the sub-cover body are provided with attached cover bodies made of elastic materials having different hardnesses on the cultivated portion side, and the hardness of the elastic material forming the attached cover body of the main cover body is provided. Is set to be higher than the hardness of the elastic material forming the auxiliary cover body of the sub cover body.
【０００９】前述した請求項１〜６において、耕耘部に
面接する付属カバー体の面接部位に、薄い皮膜層を形成
していることが望ましい（請求項７）。In the above-mentioned claims 1 to 6, it is desirable that a thin coating layer is formed at the contact portion of the attached cover body that comes into contact with the tillage portion (claim 7).
【００１０】[0010]
【発明の実施の形態】以下、図を参照して本発明の実施
の形態のいくつかを説明する。図１（１）は、サイドド
ライブ形ロータリ耕耘機１を示しており、該耕耘機１は
図示省略したトラクタの後部に三点リンク等を介して昇
降自在に装着されるものである。前記ロータリ耕耘機１
は、水平横軸廻りに回転する爪軸２に多数の耕耘爪３を
備えて構成された耕耘部４とこの耕耘部４の外周を覆う
カバー装置５とを有し、トラクタのＰＴＯ軸とＰＩＣ軸
６とをジョイント軸にて連動連結することで耕耘部４が
図１（１）の矢示方向に駆動（ダウンカット）されるも
のである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Some embodiments of the present invention will be described below with reference to the drawings. FIG. 1 (1) shows a side-drive type rotary cultivator 1, which is mounted on a rear portion of a tractor (not shown) so as to be vertically movable via a three-point link or the like. The rotary cultivator 1
Has a cultivating part 4 including a large number of cultivating claws 3 on a claw shaft 2 that rotates around a horizontal horizontal axis, and a cover device 5 that covers the outer circumference of the cultivating part 4, and a PTO shaft of a tractor and a PIC. By jointly connecting the shaft 6 with a joint shaft, the tiller 4 is driven (downcut) in the direction of the arrow in FIG. 1 (1).
【００１１】カバー装置５は、耕耘部４の外周を覆うカ
バー体７を有し、該カバー体７は耕耘部４の上方側を覆
う主カバー体８とのこの主カバー体８の後部にヒンジ９
を介して枢着されていて耕耘部４の後方側を覆う副カバ
ー体１０とで構成されており、副カバー体１０の後部に
は均平用のフラップカバー体１１を備えているとともに
弾持手段１２によって接地方向に弾性力によって付勢さ
れている。前記カバー体７の耕耘部側に、少なくとも２
層構造でかつ硬度が高低とされたゴム等の弾性材料から
なる付属カバー体１３が備えられている。The cover device 5 has a cover body 7 for covering the outer circumference of the tilling part 4, and the cover body 7 and a main cover body 8 for covering the upper side of the tilling part 4 are hinged to the rear part of the main cover body 8. 9
And a sub-cover body 10 that covers the rear side of the cultivating part 4 and is provided with a flap cover body 11 for leveling at the rear part of the sub-cover body 10 It is biased by the elastic force in the ground contact direction by the means 12. At least 2 on the cultivated side of the cover body 7.
An accessory cover body 13 made of an elastic material such as rubber having a layered structure and having high and low hardness is provided.
【００１２】付属カバー体１３は、図１（２）（３）で
示すように内側（耕耘部に近い側）の第１付属カバー体
１４と外側（耕耘部に遠い側）の第２付属カバー体１５
とで構成されており、前記第１付着カバー１４の硬度が
低い弾性材料（軟らかで弾性変形（量）に富む）、一
方、第２付属カバー体１５の硬度が高い弾性材料と（硬
くて弾性変形（量）が小さい）されている。例えば、第
１付属カバー体１４は硬度２５のクロロプレンスポンジ
ゴムであり、第２付属カバー体１５は硬度４０の天然ゴ
ムで構成され、図では第１付属カバー体１４の厚みを第
２付属カバー体１５の厚みより大きくしている。As shown in FIGS. 1 (2) and 3 (3), the accessory cover body 13 includes a first accessory cover body 14 on the inner side (the side closer to the tillage part) and a second accessory cover body on the outer side (the side farther from the tiller part). Body 15
And an elastic material having a low hardness of the first attachment cover 14 (soft and rich in elastic deformation (quantity)), and an elastic material having a high hardness of the second auxiliary cover body 15 (hard and elastic). Deformation (amount) is small). For example, the first attached cover body 14 is made of chloroprene sponge rubber having a hardness of 25, and the second attached cover body 15 is made of natural rubber having a hardness of 40. In the figure, the thickness of the first attached cover body 14 is equal to the second attached cover body. The thickness is greater than 15.
【００１３】図１（３）は第２付属カバー体１５を構成
するのに、帆布その他の芯材１５Ａを弾性材料で被包若
しくは埋設して３層構造としたものである。いずれの場
合でも、第１付属カバー体１４によって耕耘作業時の衝
撃等を緩和し、かつ弾性変形量を大きくして土付着を防
止する一方このカバー体１４の過度の弾性変形を第２付
属カバー体１５によって抑制して耐久性を向上している
のである。また、図１（２）（３）で示すように、付属
カバー体１３は、主カバー体８に対して空間部１６を形
成してその前後端を主カバー体８に接着乃至クランプ金
具等を用いて装着しており、空間部１６を有することに
よって付属カバー体１３の弾性変形は確保されて全体と
して振動することにより、土付着防止乃至付着成長の抑
制を図りつつ振動騒音をおさえているのである。In FIG. 1 (3), the second accessory cover body 15 is constructed by covering or embedding a canvas or other core material 15A with an elastic material to form a three-layer structure. In any case, the first attached cover body 14 reduces the impact during cultivating work, and increases the elastic deformation amount to prevent soil adhesion, while excessive elastic deformation of the cover body 14 causes the second attached cover body. It is suppressed by the body 15 to improve durability. Further, as shown in FIGS. 1 (2) and (3), the attached cover body 13 forms a space portion 16 in the main cover body 8 and the front and rear ends thereof are bonded to the main cover body 8 or clamp metal fittings or the like are attached. Since the attached cover body 13 is elastically deformed by virtue of having the space portion 16 and vibrating as a whole, vibration noise is suppressed while preventing soil adhesion or suppressing adhesion growth. is there.
【００１４】図２から図４は本発明の他の有用な実施形
態を示しており、図２は付属カバー体１３の第２付属カ
バー体１５を主カバー体８（副カバー体１０でも良い）
に接着材等によってその全面を密着したものであり、こ
の場合、主カバー体８若しくは付属カバー体１３の双方
若しくはいずれか一方を加熱しておいて密着させた後、
冷却（自然冷却でも強制冷却でも良い）させて結合した
ものである。図３は図１（２）において付属カバー体１
３における第２付属カバー体１５にフック部１５Ｂを隆
起形成しておき、このフック部１５Ｂに係合した弾性変
形可能な取付け具１７の他端を主カバー体８にボルト止
め乃至リベット止め等による固着部１８にて止着させ、
該取付け具１７の弾性変形許容部１７Ａによって付属カ
バー体１３の弾性変形を空間部１６内にて確保しつつ取
付け具１７による取着力を確保したものである。FIGS. 2 to 4 show another useful embodiment of the present invention. FIG. 2 shows the second auxiliary cover body 15 of the auxiliary cover body 13 as the main cover body 8 (or the sub cover body 10 may be used).
Is adhered over its entire surface with an adhesive or the like. In this case, after heating either or both of the main cover body 8 and the auxiliary cover body 13 to bring them into close contact,
It is the one that is cooled (natural cooling or forced cooling may be used) and then combined. FIG. 3 shows the attached cover body 1 in FIG. 1 (2).
The hook portion 15B is formed on the second attached cover body 15 in FIG. Fasten at the fixed part 18,
The elastic deformation permitting portion 17A of the attachment 17 secures the elastic deformation of the accessory cover body 13 in the space 16 while securing the attachment force by the attachment 17.
【００１５】これ故、取付け具１７は主カバー体８の前
後左右に所定間隔をおいて配置することが望ましい。図
４は、付属カバー体１３における第２付属カバー体１５
が硬度が異なる２層構造として形成してあり、第１付属
カバー体１４については耕耘部と面接する面接部位に、
薄い皮膜層１４Ａを形成したものであり、該層１４Ａは
コーティング処理等によって形成できる。図５はカバー
体７、図では主カバー体８と副カバー体９の耕耘部側
に、発泡率が１５％以上の発泡弾性材料（ゴム又は樹
脂）からなる付属カバー体１３を装着したものであり、
発泡率（発泡倍率）が１５％以上のものは土の付着（接
着）表面積が少なくまた弾性により土の付着力が弱くな
ることから有利となるである。Therefore, it is desirable that the attachments 17 be arranged at a predetermined interval in the front, rear, left and right of the main cover body 8. FIG. 4 shows the second attached cover body 15 in the attached cover body 13.
Is formed as a two-layer structure having different hardness, and the first attached cover body 14 is provided at the contact portion that comes into contact with the tillage portion,
The thin film layer 14A is formed, and the layer 14A can be formed by a coating process or the like. FIG. 5 shows a cover body 7, in which the main cover body 8 and the sub-cover body 9 are provided with attached cover bodies 13 made of a foamed elastic material (rubber or resin) having a foaming rate of 15% or more on the cultivated side. Yes,
A foaming rate (foaming ratio) of 15% or more is advantageous because the surface area of adhesion (adhesion) of soil is small and the adhesion force of soil becomes weak due to elasticity.
【００１６】図６は付属カバー体１３を複数層（少なく
とも２層以上であり、図では２層を示すが３層でも良
い）に形成し、第１付属カバー体１４は発泡率が１５％
以上であり、第２付属カバー体１５は発泡率が１０％以
上とされているのであり、第１付属カバー体１４は発泡
率が１５％以上であることから所謂目が荒く土付着乃至
付着成長が抑制されるであり、一方、第２付属カバー体
１５は所謂目が細かくて主カバー体８乃至副カバー体１
０に対する接着力が強くなって耐久性を向上できたので
ある。In FIG. 6, the accessory cover body 13 is formed in a plurality of layers (at least two layers or more, two layers are shown in the figure, but three layers are also possible), and the first accessory cover body 14 has a foaming rate of 15%.
The above is because the second accessory cover body 15 has a foaming rate of 10% or more, and the first accessory cover body 14 has a foaming rate of 15% or more. On the other hand, the second attached cover body 15 has so-called fine eyes, and the main cover body 8 to the sub cover body 1 are
The adhesive strength with respect to 0 became stronger and the durability could be improved.
【００１７】図７は主カバー体８と副カバー体１０に、
少なく２層以上の層構造とした弾性材料よりなる付属カ
バー体１３を装着したとき、副カバー体１０側の付属カ
バー体１３に対して主カバー体８側の付属カバー体１３
の強度（耐久性、引裂き性等をいう）を強くしたもので
あり、副カバー体１０側の付属カバー体１３では耕耘部
でダウンカットするときの石，土等の衝突力を緩和吸収
して土付着防止とともに騒音を低減するとともに、主カ
バー体８側における付属カバー体１３によっては耕耘部
から持廻された土等が通過するときの滑り運動を円滑に
したものである。FIG. 7 shows a main cover body 8 and a sub-cover body 10,
When the attached cover body 13 made of an elastic material having a layered structure of at least two layers or more is attached, the attached cover body 13 on the main cover body 8 side is attached to the attached cover body 13 on the sub cover body 10 side.
Of the auxiliary cover body 13 on the side of the sub-cover body 10 to absorb and absorb the impact force of stones, soil, etc. when downcutting at the cultivating part. In addition to preventing soil attachment and reducing noise, the auxiliary cover body 13 on the main cover body 8 side smoothes the sliding movement when soil carried around from the tillage passes.
【００１８】図８に示す例は、主カバー体８における付
属カバー体１３を複数層構造で構成し、副カバー体１０
における付属カバー体１３は一枚で構成して、副カバー
体１０に対して空間部１６Ａを造成して複数個所を固着
手段１９にて止着したものであり、付属カバー体１３が
一枚であっても空間部１６Ａによって弾性変形が確保さ
れて土付着を効果的に防止できるのであり、この場合、
主カバー体８側の付属カバー体１３については発泡ゴム
等で構成することができるし、副カバー体１０について
はこれを硬質樹脂で構成することができる（このこと
は、図１〜図７の例における主カバー体８および副カバ
ー体１０はいずれも鉄板等の金属材料で構成されている
ことを意味する）。In the example shown in FIG. 8, the auxiliary cover body 13 in the main cover body 8 has a multi-layer structure, and the auxiliary cover body 10 has a multi-layer structure.
The auxiliary cover body 13 is composed of one sheet, the space portion 16A is formed in the sub cover body 10, and a plurality of places are fixed by the fixing means 19, and the single auxiliary cover body 13 is formed. Even if there is, the elastic deformation can be secured by the space portion 16A and the soil adhesion can be effectively prevented. In this case,
The auxiliary cover body 13 on the side of the main cover body 8 can be made of foamed rubber or the like, and the auxiliary cover body 10 can be made of hard resin (this means that in FIGS. 1 to 7). It means that both the main cover body 8 and the sub cover body 10 in the example are made of a metal material such as an iron plate).
【００１９】図９はカバー体７（主カバー体８と副カバ
ー体１０であるが、いずれか一方でも良い）を金属バー
材（中実材、中空材のいずれでも良い）又は硬質樹脂性
のバー材２０によって格子構造に枠組みしたものであ
り、格子空間２１には、図１〜図７等で例示した付属カ
バー体１３における第２付属カバー体１５を図１０で示
すように嵌合して接着等によって固着したものであっ
て、これによれば付属カバー体１３を剥離することなく
確実かつ強固に装着することができる。図１１は付属カ
バー体１３を連続気泡による発泡材料で作成し、カバー
体５には貯水部２２を形成して小孔２２Ａによって付属
カバー体３に水を進入可能としたものであり、付属カバ
ー体１３に耕耘作業中の衝撃が作用すると発泡材が呼吸
することによって、付属カバー体１３に含浸した水が噴
出されることで土付着防止乃至付着成長を抑制したもの
である。In FIG. 9, the cover body 7 (the main cover body 8 and the sub-cover body 10, but either one may be used) is made of metal bar material (solid material or hollow material) or hard resin material. The frame is framed in a lattice structure by the bar member 20, and the second accessory cover body 15 in the accessory cover body 13 illustrated in FIGS. 1 to 7 is fitted in the lattice space 21 as shown in FIG. It is fixed by adhesion or the like, and according to this, the attached cover body 13 can be securely and firmly mounted without peeling. FIG. 11 shows that the accessory cover body 13 is made of a foamed material with open cells, and the cover body 5 has a water storage portion 22 to allow water to enter the accessory cover body 3 through the small holes 22A. When a shock is applied to the body 13 during the plowing work, the foam material breathes, so that the water impregnated in the accessory cover body 13 is ejected to prevent soil adhesion or adhesion growth.
【００２０】なお、実施形態ではダウンカット方式を示
しているが、アップカット方式であっても良い。Although the down-cut method is shown in the embodiment, the up-cut method may be used.
【００２１】[0021]
【発明の効果】以上詳述した通り本発明によれば、耕耘
部を覆うカバー体に対する土付着乃至付着成長を確実に
防止乃至抑制することができる。As described in detail above, according to the present invention, it is possible to surely prevent or suppress soil adhesion or adhesion growth to the cover body covering the tillage part.
【図１】 本発明の実施形態の一例を示し、（１）は耕
耘機の側面図、（２）は耕耘カバー体の要部拡大断面
図、（３）は同じく他の例の断面図である。1 shows an example of an embodiment of the present invention, (1) is a side view of a tiller, (2) is an enlarged cross-sectional view of a main part of a tiller cover, and (3) is a cross-sectional view of another example. is there.
【図２】 本発明の第３形態の要部断面図である。FIG. 2 is a sectional view of an essential part of a third embodiment of the present invention.
【図３】 本発明の第４形態の要部断面図である。FIG. 3 is a sectional view of an essential part of a fourth mode of the present invention.
【図４】 本発明の第５形態の要部断面図である。FIG. 4 is a cross-sectional view of an essential part of a fifth mode of the present invention.
【図５】 本発明の第６形態を示すカバー体の側断面図
である。FIG. 5 is a side sectional view of a cover body showing a sixth embodiment of the present invention.
【図６】 本発明の第７形態を示すカバー体の側断面図
である。FIG. 6 is a side sectional view of a cover body showing a seventh embodiment of the present invention.
【図７】 本発明の第８形態を示すカバー体の側断面図
である。FIG. 7 is a side sectional view of a cover body showing an eighth embodiment of the present invention.
【図８】 本発明の第９形態を示すカバー体の側断面図
である。FIG. 8 is a side sectional view of a cover body showing a ninth embodiment of the present invention.
【図９】 カバー体の他側を示す斜視図である。FIG. 9 is a perspective view showing the other side of the cover body.
【図１０】 図９の一部断面図である。FIG. 10 is a partial cross-sectional view of FIG.
【図１１】 他の有用な変形例を示す断面図である。FIG. 11 is a cross-sectional view showing another useful modified example.
１ ロータリ耕耘機 ４ 耕耘部 ５ カバー体 １３ 付属カバー体 １４ 第１付属カバー体 １５ 第２付属カバー体 1 rotary tiller 4 tillage department 5 cover body 13 Attached cover body 14 First attached cover body 15 Second accessory cover body
───────────────────────────────────────────────────── フロントページの続き (72)発明者 内田 隆史 大阪府堺市石津北町64番地 株式会社ク ボタ 堺製造所内 (72)発明者 梅木 和美 大阪府堺市石津北町64番地 株式会社ク ボタ 堺製造所内 (72)発明者 前山 達哉 大阪府堺市石津北町64番地 株式会社ク ボタ 堺製造所内 (72)発明者 田井 通生 大阪府堺市石津北町64番地 株式会社ク ボタ 堺製造所内 (72)発明者 藤本 駿児 大阪府堺市石津北町64番地 株式会社ク ボタ 堺製造所内 (72)発明者 岡村 誠一 大阪府堺市石津北町64番地 株式会社ク ボタ 堺製造所内 (72)発明者 嘉名 睦 大阪府堺市石津北町64番地 株式会社ク ボタ 堺製造所内 (56)参考文献 特開 平４−287601（ＪＰ，Ａ) 実開 平２−131804（ＪＰ，Ｕ) 実開 昭61−54305（ＪＰ，Ｕ) 実開 昭52−128507（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) A01B 33/12 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takashi Uchida 64 Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Corporation Sakai Factory (72) Inventor Kazumi Umeki, 64, Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Sakai Manufacturing Co., Ltd. (72) Inventor Tatsuya Maeyama 64 Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Sakai Factory Co., Ltd. (72) Inventor Tasei Tsui, 64 Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Sakai Factory Co., Ltd. (72) Invention Shun Fujimoto 64 Ishizukita-machi, Sakai City, Osaka Prefecture, Kubota Sakai Plant Co., Ltd. (72) Inventor, Seiichi Okamura 64, Ishizukita-machi, Sakai City, Osaka Prefecture (72) Inventor, Kaname Mutsumi Osaka Prefecture 64 Ishizukita-machi, Sakai City Kubota Sakai Works Co., Ltd. (56) References JP-A-4-287601 (JP, A) Actual Kaihei 2-131804 (JP, U) Open Akira 61-54305 (JP, U) JitsuHiraku Akira 52-128507 (JP, U) (58 ) investigated the field (Int.Cl. 7, DB name) A01B 33/12
Claims (6)
ータリ耕耘機のカバー装置において、 前記カバー体の耕耘部側に、２層構造でかつ硬度が高低
とされた付属カバー体が備えられており、該付属カバー
体は、内側（耕耘部に近い側）の第１付属カバー体と外
側（耕耘部に遠い側）の第２付属カバー体とで構成され
ており、前記第１付属カバー体の硬度が低く第２付属カ
バー体の硬度が高い弾性材料で作成され、硬度が低い内
側の第１付属カバー体が、硬度が高い外側の第２付属カ
バー体よりも分厚く形成されていることを特徴とするロ
ータリ耕耘機のカバー装置。1. A cover device for a rotary cultivator having a cover body for covering an outer circumference of a cultivating part, wherein a cover layer having a two- layer structure and having high and low hardness is provided on the cultivating part side of the cover body. And the attached cover body is composed of a first attached cover body on an inner side (a side closer to the tillage part) and a second attached cover body on an outer side (a side farther from the tiller part), and the first attached cover body. Is made of an elastic material with a low hardness and a high hardness of the second attached cover body ,
The first accessory cover on the side is the second accessory cover on the outside with high hardness.
A cover device for a rotary cultivator, which is formed thicker than a bar body .
被包若しくは埋設した弾性材料とで構成されていること
を特徴とする請求項１記載のカバー装置。2. The cover device according to claim 1, wherein the second attached cover body is composed of a core material and an elastic material encapsulating or burying the core material.
密着又はカバー体との間で空間部を有して装着されてい
ることを特徴とする請求項１又は２記載のカバー装置。3. The cover device according to claim 1, wherein the second attached cover body is attached to the cover body so as to be in close contact with or have a space between the cover body and the second cover body.
ータリ耕耘機のカバー装置において、 前記カバー体の耕耘部側に、少なくとも２層構造でかつ
発泡率を異にする発泡弾性材料からなる付属カバー体を
備え、該付属カバー体は、内側（耕耘部に近い側）の第
１付属カバー体と外側（耕耘部に遠い側）の第２付属カ
バー体とで構成されており、前記第１付属カバー体の発
泡率が、第２付属カバー体の発泡率よりも高く作成され
ていることを特徴とするロータリ耕耘機のカバー装置。4. A cover device for a rotary cultivator having a cover body for covering an outer periphery of a cultivating part, wherein the cover body is provided with a foam elastic material having a two-layer structure and different foaming rates on the cultivating part side. A cover body is provided , and the attached cover body is provided on the inner side (side closer to the tillage part).
1 Attached cover body and 2nd attached cover on the outside (the side far from the tillage part)
It is composed of a bar body, and the first cover body
The foam rate is higher than that of the second attached cover body.
Cover device of the rotary tiller, characterized in that is.
の上方を覆う主カバー体と耕耘部の後方を覆う副カバー
体として構成したロータリ耕耘機のカバー装置におい
て、 前記主カバー体および副カバー体の耕耘部側にそれぞれ
硬度を異にする弾性材料からなる付属カバー体が備えら
れており、主カバー体の付属カバー体を構成する弾性材
料の硬度が副カバー体の付属カバー体を構成する弾性材
料の硬度に対して高く設定されていることを特徴とする
ロータリ耕耘機のカバー装置。5. A cover device for a rotary cultivator, comprising a cover body for covering an outer circumference of a tilling part as a main cover body for covering an upper part of the tilling part and a sub-cover body for covering a rear part of the tilling part. An auxiliary cover body made of an elastic material having different hardness is provided on the cultivated part side of the sub cover body, and the hardness of the elastic material forming the auxiliary cover body of the main cover body is equal to that of the auxiliary cover body of the sub cover body. A cover device for a rotary cultivator, which is characterized in that the hardness is set higher than the hardness of the elastic material constituting the cover device.
る付属カバー体の面接部位に、薄い皮膜層を形成してい
ることを特徴とするロータリ耕耘機のカバー装置。6. A cover device for a rotary cultivator according to claim 1, wherein a thin film layer is formed on a contact portion of the attached cover body that contacts the cultivating portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13677398A JP3445146B2 (en) | 1998-05-19 | 1998-05-19 | Cover device for rotary tiller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13677398A JP3445146B2 (en) | 1998-05-19 | 1998-05-19 | Cover device for rotary tiller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11318101A JPH11318101A (en) | 1999-11-24 |
| JP3445146B2 true JP3445146B2 (en) | 2003-09-08 |
Family
ID=15183188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13677398A Expired - Fee Related JP3445146B2 (en) | 1998-05-19 | 1998-05-19 | Cover device for rotary tiller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3445146B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102550146A (en) * | 2011-12-15 | 2012-07-11 | 宁波大叶园林设备有限公司 | Rotary cultivator with multiple safety measures |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6338209B1 (en) * | 2000-04-11 | 2002-01-15 | Mcclure David | Tilling machine, method of use and method of gardening |
-
1998
- 1998-05-19 JP JP13677398A patent/JP3445146B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102550146A (en) * | 2011-12-15 | 2012-07-11 | 宁波大叶园林设备有限公司 | Rotary cultivator with multiple safety measures |
| CN102550146B (en) * | 2011-12-15 | 2014-01-01 | 宁波大叶园林设备有限公司 | Rotary cultivator with multiple safety measures |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11318101A (en) | 1999-11-24 |
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