JP2520680Y2 - Agricultural wheels - Google Patents

Description

【考案の詳細な説明】 （産業上の利用分野） 本考案は、主に播種機、施肥機、畝立機、等の畑作用
農作業機に使用される農用車輪に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an agricultural wheel mainly used for a field working agricultural work machine such as a seeder, a fertilizer applicator, and a ridger.

（従来の技術） 畑作用農業機に使用される農用車輪として空気入りラ
グ付農耕タイヤを用いると、部品点数が多く製作・組立
が煩雑で、空気圧の管理が面倒である等の問題点を有す
る。(Prior Art) When an agricultural tire with pneumatic lugs is used as an agricultural wheel used in a field-operated agricultural machine, there are problems that the number of parts is large, manufacturing and assembling are complicated, and air pressure management is troublesome. .

一方、実開昭55-85905号公報で開示のゴム焼付車輪を
畑作用に用いると、湿田に比べ畑地走行では車輪の対地
喰い込みが悪く充分な牽引力を確保できず、又、実開昭
52-123121号公報で開示のゴム焼付車輪を畑作用に用い
た場合には、推進ラグが金属板であることから折損し易
くなるという問題があり、このため、特開昭59-77902号
公報で開示のように推進ラグを弾性羽根で形成すると畑
地では該羽根による牽引力は差程期待できないという問
題がある。On the other hand, when the rubber-baked wheel disclosed in Japanese Utility Model Publication No. 55-85905 is used for the field action, compared to a wetland, when driving on the field, the wheel does not bite well in the ground and sufficient traction force cannot be secured.
When the rubber-baked wheel disclosed in JP-A-52-123121 is used for the field action, there is a problem that the propulsion lug is a metal plate and is therefore easily broken. Therefore, JP-A-59-77902 If the propulsion lug is formed of elastic blades as disclosed in (1), there is a problem that the traction force by the blades cannot be expected to a great extent in a field.

そこで、実開昭59-56102号公報で開示されているよう
に、薄板環状芯金を芯金支持部材に固着し、芯金の内外
周面及び左右側面をゴム質部材で固着包囲し、ゴム質部
材のトレッド部の外周に多数のラグを設定した農用車輪
において、前記芯金を内包したゴム質部材は肉厚が幅よ
り小さく板環形であり、前記ラグはトレッド部の幅方向
略中央に周方向等間隔に多数形成された周長部と、この
各周長部から外側方へ延設された側長部とを有する農用
車輪があり、この農用車輪によれば畑作用として用いる
ことができる。Therefore, as disclosed in Japanese Utility Model Laid-Open No. 59-56102, a thin annular core metal is fixed to a core metal support member, and inner and outer peripheral surfaces and left and right side surfaces of the core metal are fixed and surrounded by a rubber member, In an agricultural wheel in which a large number of lugs are set on the outer circumference of the tread portion of the quality member, the rubber member containing the core metal has a plate ring shape with a wall thickness smaller than the width, and the lug is substantially at the center in the width direction of the tread portion. There is an agricultural wheel having a large number of circumferentially long portions formed at equal intervals in the circumferential direction and a lateral long portion extending outward from each circumferential portion, and this agricultural wheel can be used as a field action.

（考案が解決しようとする課題） 実開昭59-56102号公報で開示の農用車輪（ゴム焼付車
輪）は、畑作用として用いることができるも、トレッド
部が平板形状であることから対地に喰い込み難く、この
ため牽引力は専らラグに頼らざるを得ず、該ラグの高さ
を高くすると車輪外径が極端に大きくなって本機（作業
機）に実質的に装着できないという課題があり、本機に
装着するには充分な牽引力を発揮することができず、ま
た、直進性および振動吸収性の点で課題があった。(Problems to be solved by the invention) Although the agricultural wheel (rubber-baked wheel) disclosed in Japanese Utility Model Laid-Open No. 59-56102 can be used as a field action, the tread portion has a flat plate shape, so that it can be eaten to the ground. There is a problem that it is difficult to put in, and for this reason the traction force must rely exclusively on the lug, and if the height of the lug is increased, the wheel outer diameter becomes extremely large and it can not be practically mounted on this machine (work machine), There was a problem in that it could not exert sufficient traction force to be mounted on this machine, and in terms of straightness and vibration absorption.

そこで本考案は、直進性および振動吸収性に優れなが
らも畑地走行中において充分な牽引力を発揮できる農用
車輪を提供することが目的である。Therefore, an object of the present invention is to provide an agricultural wheel which is excellent in straightness and vibration absorption and which can exert a sufficient traction force while traveling on a field.

（課題を解決するための手段） 本考案は、円環状リム５の全周をゴム質材料で包囲固
着して円環状の弾性輪体５を構成し、該弾性輪体６の接
地側外周にゴム質材料からなる多数のラグ７を一体に形
成し、該ラグ７は、弾性輪体６の幅方向中央に位置しか
つ周方向に延伸する周長部８とこの周長部８より軸方向
に延びる側長部９とから構成されていて、該側長部９を
左右に振分けて配列している農用車輪において、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。(Means for Solving the Problems) In the present invention, the entire circumference of the annular rim 5 is surrounded and fixed by a rubber material to form an annular elastic ring body 5, and the elastic ring body 6 has an outer periphery on the ground side. A large number of lugs 7 made of a rubber material are integrally formed, and the lugs 7 are located at the center of the elastic ring body 6 in the width direction and extend in the circumferential direction. In order to achieve the above-mentioned object, the following technical means is taken in the agricultural wheel which is composed of the portion 9 and the side portions 9 are arranged so as to be laterally distributed.

すなわち、本考案では、前記ラグ７における周長部８
は、このすべてが車輪中心の同一円周上に位置して周方
向に間隔をもって配列されており、前記側長部９は、前
記周長部材８と同一高さの第１側長部9aとこれより低い
第２側長部9bとを有し、該第１側長部9aは３個おきのラ
グ７に軸方向の突出方向を左右交互に異ならさせて備え
られ、前記第２側長部9bは第１側長部9a間でかつ最も近
い第１側長部9aと異なる方向として突出形成されている
ことを特徴とするものである。That is, in the present invention, the peripheral portion 8 of the lug 7 is
Are all arranged on the same circumference of the wheel center and are arranged at intervals in the circumferential direction, and the side long portion 9 is the same as the circumferential long member 8 and the first side long portion 9a. The second side long portion 9b has a lower second side long portion 9b, and the first side long portion 9a is provided on every three lugs 7 so that the protruding direction in the axial direction is alternately different from each other. 9b is formed so as to project between the first side long portions 9a and in a direction different from the closest first side long portion 9a.

（作用） 本考案に係る農用車輪１を畑地用作業機に装着して走
行すると、ラグ７における周長部８で直進性を確保し、
側長部９により牽引力を発揮することになるが、周長部
８のすべては同一円周上に位置することから、車輪１の
直進性は周方向全体に亘って確保できるし、側長部９に
よる牽引力は、高さの低い第２側長部9bによって蹴り出
した残りを高さの高い第１側長部9aによって蹴り出すこ
とにより、車輪１がスリップすることなく走行できるこ
とになる。(Operation) When the agricultural wheel 1 according to the present invention is mounted on the upland working machine and travels, straightness is secured by the circumferential portion 8 of the lug 7,
Although the traction force is exerted by the side length portion 9, since all the circumferential length portions 8 are located on the same circumference, the straightness of the wheel 1 can be ensured over the entire circumferential direction, and the side length portion 9 causes The traction force allows the wheel 1 to travel without slipping by kicking out the remainder kicked out by the second side long portion 9b having a low height by the first side long portion 9a having a high height.

一方、路上走行中においては、低い高さの第２側長部
材9bを有しているラグ７の周長部８が弾性変形し易くな
るので走行振動を軽減できる。On the other hand, during traveling on the road, since the circumferentially long portion 8 of the lug 7 having the second side long member 9b having a low height is easily elastically deformed, traveling vibration can be reduced.

（実施例） 以下、本考案の実施例を図面に基づき説明する。Embodiment An embodiment of the present invention will be described below with reference to the drawings.

第１図〜第４図は本考案の第１実施例を示すもので、農
用車輪１は、中央のボス２と、このボス２に周方向に等
角度で放射状に固着された断面円形の中空金属製の３本
のスポーク３と、ボス２及びスポーク３に溶接された補
強板４と、スポーク先端に溶接されていて環状芯材とな
る断面略ハート状の中空金属製で円環状のリム５と、こ
のリム５を被覆するゴム質材料から成る輪体６等から構
成されている。1 to 4 show a first embodiment of the present invention. An agricultural wheel 1 includes a central boss 2 and a hollow cross-section which is radially fixed to the boss 2 at an equal angle in the circumferential direction. Three spokes 3 made of metal, a boss 2 and a reinforcing plate 4 welded to the spokes 3, and an annular rim 5 made of a hollow metal having a substantially heart-shaped cross-section which is welded to the spoke tips and serves as an annular core material. And a ring body 6 and the like made of a rubber material that covers the rim 5.

前記輪体６は、弾性材例えば、JIS硬度70°〜90°の
ゴム材等から形成されており、その断面外郭形状は、接
地側の仮想面6Aが長円形をその長軸に沿って分割した略
半長円形状を呈し、内周側6Bが頂角θを80°〜150°の
略三角形を呈する涙滴状とされた略ハート形（栗形）に
なっており、前記リム５と略同じ形状とせられ、弾性材
肉厚が全体的に略均一とされている。The ring 6 is made of an elastic material, for example, a rubber material having a JIS hardness of 70 ° to 90 °, and the cross-sectional outer shape is such that the ground-side virtual surface 6A divides an ellipse along its major axis. It has a substantially semi-elliptical shape, and the inner peripheral side 6B has a teardrop-shaped substantially heart shape (chestnut shape) with a vertical angle θ of approximately 80 ° to 150 °, and has a substantially heart shape (chestnut shape). The elastic materials have substantially the same shape, and the thickness of the elastic material is generally uniform.

すなわち、前記リム５は、その断面外郭形状が、接地
側5Aが長円形をその長軸に沿って分割した略半長円形状
を呈する偏平状とされ、内周側5Bを頂角θ′を80°〜15
0°の略三角形を呈する涙滴状とされ、全体として略ハ
ート形とせられており、冷間異形引抜鋼管を使用して環
状に形成されている。That is, the outer peripheral shape of the rim 5 is a flat shape in which the ground contact side 5A has a substantially semi-elliptical shape obtained by dividing an ellipse along the major axis thereof, and the inner peripheral side 5B has an apex angle θ ′. 80 ° ~ 15
It is in the shape of a teardrop having a substantially triangular shape of 0 °, and has a substantially heart shape as a whole, and is formed in an annular shape using a cold deformed drawn steel pipe.

なお、リム５及び輪体６の断面外郭形状において、内
周側5B,6Bの略三角形を形成する斜辺は、直線のみなら
ず曲線としてもよい。In addition, in the cross-sectional outer shape of the rim 5 and the wheel body 6, the hypotenuse forming the substantially triangular shape on the inner peripheral side 5B, 6B may be not only a straight line but also a curved line.

また、前記リム５及び輪体６の内周側頂角θ、θ′
は、80°以下の場合輪体６の高さＨが大きくなるため回
転中の泥の持ち上げ量が多くなり、また、150°以上の
場合内周側の傾斜が緩くなり過ぎて泥の落下すなわち泥
土剥離効果が悪くなる。しかし、この頂角θ、θ′は90
°〜140°とするのがよりよい結果を得るのに好適であ
る。Further, the apex angles θ, θ ′ on the inner peripheral side of the rim 5 and the wheel body 6
When the angle is 80 ° or less, the height H of the wheel body 6 becomes large, so the amount of lifting of the mud during rotation increases, and when it is 150 ° or more, the slant on the inner peripheral side becomes too gentle, and The effect of removing mud becomes worse. However, this apex angle θ, θ ′ is 90
It is preferable that the angle is in the range of ° to 140 ° for better results.

さらに、輪体６の幅Ｂは、ラグ７を含む輪体高さＡと
等しいかまたは、少し大きくなっている。輪体高さＡを
大きくすることは、前述のように泥の持ち上げ量が多く
なると共に沈下喰い込みが多くなって、旋回及び後退時
の抵抗が大きくなる。Further, the width B of the wheel 6 is equal to or slightly larger than the wheel height A including the lug 7. Increasing the wheel body height A increases the amount of mud lifted as described above, increases the sinking and sinking, and increases the resistance during turning and retreating.

すなわち、本考案に係る農用車輪１は円環状リム５の
全周をゴム質材料で包囲固着して円環状の弾性輪体６を
構成し、該弾性輪体６の接地側外周にゴム質材料よりな
る多数のラグ７を一体に形成し、該ラグ７は、弾性輪体
６の幅方向中央に位置しかつ周方向に延伸する周長部８
とこの周長部８より軸方向に延びる側長部９とから構成
されていて、該側長部９を左右に振分けて配列している
のである。That is, in the agricultural wheel 1 according to the present invention, the entire circumference of the annular rim 5 is surrounded and fixed by a rubber material to form an annular elastic ring body 6, and the rubber material is attached to the outer circumference of the elastic ring body 6 on the grounding side. A large number of lugs 7 are integrally formed, and the lug 7 is located at the center of the elastic ring body 6 in the width direction and extends in the circumferential direction.
And a side elongated portion 9 extending in the axial direction from the peripheral elongated portion 8, and the side elongated portions 9 are arranged so as to be laterally distributed.

更に、前記弾性輪体６の接地側の仮想面6Aを軸方向に
関して略偏平状に形成し、該仮想面6Aに前記ラグ７を一
体成形することで前記ラグ７の高さを含む輪体高さＡと
等しいかやや大きな輪体幅Ｂを前記弾性輪体６は有し、
前記ラグ７における周長部８の周方向隣接間に該周長部
８の幅よりも広幅とされた平面視で八角形状の凹部7Aを
形成し、前記弾性輪体６の内周面6Bを、幅方向両端から
軸方向中央部に向かうにしたがって径方向内包へ移行す
るように山形状に形成している。Further, a virtual surface 6A on the ground side of the elastic ring body 6 is formed in a substantially flat shape in the axial direction, and the lug 7 is integrally formed on the virtual surface 6A to form a ring body height including the height of the lug 7. The elastic ring body 6 has a ring body width B which is equal to or slightly larger than A,
An octagonal recess 7A having a width wider than the width of the circumferential portion 8 is formed between the circumferentially adjacent portions of the circumferential portion 8 of the lug 7, and the inner circumferential surface 6B of the elastic ring body 6 is formed at both ends in the width direction. Is formed in a mountain shape so as to transition to the radial inner inclusion from the center portion in the axial direction.

前記ラグ７は輪体６の外周面（仮想面6A）に山形状に
突出し且つその頂部が略長方形となっている周長部８
と、この周長部８から軸方向一側方へ突出した側長部９
とを有し、該周長部８は、このすべてが車輪中心の同一
円周上に位置して周方向に間隔をもって配列されてお
り、前記側長部９は、前記周長部８と同一高さの第１側
長部9aとこれより低い第２側長部9bとを有し、該第１側
長部9aは第３図で示すように３個おきのラグ７に軸方向
の突出方向を左右交互に異ならさせて備えられ、前記第
２側長部9bは第１側長部9a間でかつ最も近い第１側長部
9aと異なる方向として突出形成されているのである。The lug 7 has a peripheral portion 8 that protrudes in a mountain shape on the outer peripheral surface (virtual surface 6A) of the ring 6 and has a substantially rectangular top.
And a side length portion 9 protruding from the circumferential length portion 8 to one side in the axial direction.
All of which are located on the same circumference of the wheel center and are arranged at intervals in the circumferential direction, and the side length portion 9 has the same height as that of the circumference portion 8. As shown in FIG. 3, the first side long portion 9a has a first side long portion 9a and a second side long portion 9b which is lower than the first side long portion 9a. And the second side long portions 9b are provided between the first side long portions 9a and are closest to each other.
It is formed so as to project in a direction different from that of 9a.

以上のように構成した農用車輪１を畑地用作業機に装
着して走行すると、ラグ７における周長部８で直進性を
確保し、側長部９により牽引力を発揮することになる
が、周長部８のすべては同一円周上に位置することか
ら、車輪１の直進性は周方向全体に亘って確保できる
し、側長部９により牽引力は、高さの低い第２側長部9b
によって蹴り出力した残りを高さの高い第１側長部9aに
よって蹴り出すことにより、車輪１がスリップすること
なく走行できることになる。When the agricultural wheel 1 configured as described above is mounted on a work implement for upland fields and travels, straightness is ensured by the circumferential portion 8 of the lug 7 and traction force is exerted by the lateral portion 9, but the circumferential portion 8 Since they are all located on the same circumference, the straightness of the wheel 1 can be ensured over the entire circumferential direction, and the side long portion 9 provides the traction force to the second side long portion 9b having a low height.
By kicking the kicked output by the first side long portion 9a having a high height, the wheel 1 can travel without slipping.

一方、路上走行中においては、低い高さの第２側長部
9bを有しているラグ７の周長部８が弾性変形し易くなる
ので走行振動を軽減できる。On the other hand, when driving on the road, the second side long portion having a low height
Since the peripheral portion 8 of the lug 7 having 9b is easily elastically deformed, traveling vibration can be reduced.

本考案の第１実施例に係る農用車輪１は、リム５及び
輪体６の断面外郭形状を共にハート形の同形状に形成し
ているので、リム５に焼付けられる弾性材の肉厚が均一
となり、弾性材の使用量を減少させることができ、加硫
時間の短縮が図れ、コスト低下を図ることができる。In the agricultural wheel 1 according to the first embodiment of the present invention, the rim 5 and the wheel body 6 are both formed in the same heart-shaped sectional outer shape, so that the elastic material baked on the rim 5 has a uniform thickness. Therefore, the amount of elastic material used can be reduced, the vulcanization time can be shortened, and the cost can be reduced.

また、弾性材の動きが抑制されるので、リム５に対す
る輪体６の接着力が強化される。さらに、輪体６におけ
る接地側の仮想面6Aが偏平状とされ、この仮想面6Aに一
体成形したラグ７は接地面圧が均一化され、沈下喰い込
み防止効果が生じ、旋回及び後退等の抵抗を減少させる
ことができ、輪体６の内周側6Bが略三角形を呈している
ことと相まって輪体高さＨを低くできるので、泥の付着
を少なくかつ泥の持ち上げによる団子状土塊の落下防止
を図ることが可能である。Further, since the movement of the elastic material is suppressed, the adhesive force of the ring body 6 to the rim 5 is strengthened. Further, the ground-side virtual surface 6A of the wheel body 6 is made flat, and the lug 7 formed integrally with the virtual surface 6A has a uniform ground-contact surface pressure, which has the effect of preventing sinking and biting, causing turning and retreating. The resistance can be reduced, and the height H of the wheel body can be lowered in combination with the fact that the inner circumference side 6B of the wheel body 6 has a substantially triangular shape, so that the adhesion of mud is reduced and the dumpling-like soil mass is dropped by lifting the mud. It is possible to prevent it.

第５図及び第６図は、本考案の第２実施例を示すもの
で、リム５の断面形状が円形状である点において第１実
施例と異なっているだけで、その他は第１実施例と同一
である。したがって、第１実施例と同一符号を付し、説
明は省略する。5 and 6 show a second embodiment of the present invention, which is different from the first embodiment in that the cross-sectional shape of the rim 5 is circular, and the other portions are the first embodiment. Is the same as Therefore, the same reference numerals as in the first embodiment are used and the description thereof is omitted.

（考案の効果） 以上詳述した通り、本考案によれば、ラグ７における
周長部８で直進性を確保し、側長部９により牽引力を発
揮することになるが、周長部８のすべては同一円周上に
位置することから、車輪１の直進性は周方向全体に亘っ
て確保できるし、側長部９による牽引力は、高さの低い
第２側長部9bによって蹴り出力した残りを高さの高い第
１側長部9aによって蹴り出すことにより、車輪１がスリ
ップすることなく走行できることになる。(Effects of the Invention) As described in detail above, according to the present invention, the circumferential portion 8 of the lug 7 ensures straightness and the side portion 9 exerts traction force, but all of the circumferential portion 8 have the same circle. Since the wheel 1 is located on the circumference, the straightness of the wheel 1 can be secured in the entire circumferential direction, and the traction force by the side long portion 9 is the height of the remaining kicked output by the second side long portion 9b having a low height. By kicking out by the first side long portion 9a having a high height, the wheel 1 can travel without slipping.

一方、路上走行中においては、低い高さの第２側長部
9bを有しているラグ７の周長部８が弾性変形し易くなる
ので走行振動を軽減できる。On the other hand, when driving on the road, the second side long portion having a low height
Since the peripheral portion 8 of the lug 7 having 9b is easily elastically deformed, traveling vibration can be reduced.

従って、本考案の農用車輪は、畑地作業機の前輪とし
て利用することによって、旋回性能、振動吸収能を確保
できる。Therefore, by using the agricultural wheel of the present invention as the front wheel of a field work machine, it is possible to secure turning performance and vibration absorption performance.

【図面の簡単な説明】[Brief description of drawings]

第１図乃至第４図は本考案の第１実施例を示すもので、
第１図は第３図のＩ−Ｉ線断面図、第２図は正面図、第
３図は輪体外周面の展開図、第４図は第３図のIV−IV線
断面図、第５図及び第６図は本考案の第２実施例を示す
もので、第５図は第１図に対応する断面図、第６図は第
４図に対応する断面図である。 １……農用車輪、５……リム、６……輪体、７……ラ
グ、８……周長部、９……側長部、9a……第１側長部、
9b……第２側長部。1 to 4 show a first embodiment of the present invention,
1 is a sectional view taken along the line I-I of FIG. 3, FIG. 2 is a front view, FIG. 3 is a developed view of the outer peripheral surface of the wheel body, and FIG. 4 is a sectional view taken along the line IV-IV of FIG. 5 and 6 show a second embodiment of the present invention. FIG. 5 is a sectional view corresponding to FIG. 1, and FIG. 6 is a sectional view corresponding to FIG. 1 ... Agricultural wheel, 5 ... Rim, 6 ... Wheel, 7 ... Lug, 8 ... Peripheral part, 9 ... Side part, 9a ... First side part,
9b …… Second side long part.

Claims (1)

(57)【実用新案登録請求の範囲】(57) [Scope of utility model registration request] 【請求項１】円環状リム（５）の全周をゴム質材料で包
囲固着して円環状の弾性輪体（６）を構成し、該弾性輪
体（６）の接地側外周にゴム質材料からなる多数のラグ
（７）を一体に形成し、該ラグ（７）は、弾性輪体
（６）の幅方向中央に位置しかつ周方向に延伸する周長
部（８）とこの周長部（８）より軸方向に延びる側長部
（９）とから構成されていて、該側長部（９）を左右に
振分けて配列している農用車輪において、 前記ラグ（７）における周長部（８）は、このすべてが
車輪中心の同一円周上に位置して周方向に間隔をもって
配列されており、前記側長部（９）は、前記周長部
（８）と同一高さの第１側長部（9a）とこれより低い第
２側長部（9b）とを有し、該第１側長部（9a）は３個お
きのラグ（７）に軸方向の突出方向を左右交互に異なら
させて備えられ、前記第２側長部（9b）は第１側長部
（9a）間でかつ最も近い第１側長部（9a）と異なる方向
として突出形成されていることを特徴とする農用車輪。1. A ring-shaped elastic ring body (6) is formed by surrounding and fixing an entire circumference of a ring-shaped rim (5) with a rubber material, and a rubber material is provided on the outer circumference of the elastic ring body (6) on the grounding side. A large number of lugs (7) made of a material are integrally formed, and the lugs (7) are located at the center of the elastic ring body (6) in the width direction and extend in the circumferential direction, and this peripheral part (8). ) From the side long part (9) extending in the axial direction, the side long part (9) is distributed to the left and right in the agricultural wheel, and the circumferential long part (8) in the lug (7) is All of them are located on the same circumference of the wheel center and are arranged at intervals in the circumferential direction, and the side long portion (9) has a first side long portion (of the same height as the circumferential long portion (8)). 9a) and a second side long portion (9b) lower than this, and the first side long portion (9a) is arranged on every three lugs (7) in the axial protruding direction to the left and right. The second side long portions (9b) are provided so as to be alternately different from each other, and the second side long portions (9b) are formed to project between the first side long portions (9a) and in a direction different from the closest first side long portion (9a). Characteristic agricultural wheels.