JPH0116642Y2 - - Google Patents
Info
- Publication number
- JPH0116642Y2 JPH0116642Y2 JP3330783U JP3330783U JPH0116642Y2 JP H0116642 Y2 JPH0116642 Y2 JP H0116642Y2 JP 3330783 U JP3330783 U JP 3330783U JP 3330783 U JP3330783 U JP 3330783U JP H0116642 Y2 JPH0116642 Y2 JP H0116642Y2
- Authority
- JP
- Japan
- Prior art keywords
- tire
- shoulder
- sidewall portion
- flat
- crown
- 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
- 239000011324 bead Substances 0.000 claims description 9
- 239000011230 binding agent Substances 0.000 description 6
- 230000008602 contraction Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000002689 soil Substances 0.000 description 2
- 241000782128 Albizia adianthifolia Species 0.000 description 1
- 101100510617 Caenorhabditis elegans sel-8 gene Proteins 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
Landscapes
- Tires In General (AREA)
Description
【考案の詳細な説明】
本考案は、湿地走行用扁平型ゴムタイヤに関す
る。[Detailed Description of the Invention] The present invention relates to a flat rubber tire for running on wetlands.
湿地走行用タイヤは、接表部の沈下を少なくし
て走行抵抗を減少させるために、柔らかいタイヤ
を用いて接地面積を増大させている。 In wetland tires, soft tires are used to increase the contact area in order to reduce the settling of the contact surface and reduce running resistance.
第1図及び第2図に示すものは、従来の湿地走
行用扁平型ゴムタイヤであり、農業機械のバイン
ダに使用されるものである。 What is shown in FIGS. 1 and 2 is a conventional flat rubber tire for running on wetlands, which is used as a binder for agricultural machinery.
同図において、1はタイヤ両側に形成されたサ
イドウオール部でこれは第1図の仮想線及び第2
図の如くバインダの負荷を受けて大きく弾性変形
し彎曲した断面となるものとされている。その主
要部の肉厚は左右共通のtとされてきた。 In the figure, 1 is the sidewall part formed on both sides of the tire.
As shown in the figure, it undergoes large elastic deformation under the load of the binder, resulting in a curved cross section. The wall thickness of the main part has been assumed to be t, which is the same for the left and right sides.
2は外周のトレツド部でサイドウオール部1よ
りも可成り長い巾をもち、こうして全体が扁平断
面の環状タイヤが形成される。 Reference numeral 2 denotes a tread portion on the outer periphery, which has a width considerably longer than the sidewall portion 1, thus forming an annular tire having a flat cross section as a whole.
3はトレツド部2に千鳥状の配置をなして一体
的に突設された周知ラグであり湿地走行用として
第2図の如く湿地内に喰込み易くかつ駆動に耐え
る先鋭山型とされている。このトレツド部2の肉
厚は前記tと略同様なものとされているが、各ラ
グ3,3間に対応する部分では接地・非接地各状
態に応じて内圧で容易に膨縮すべく薄肉厚とした
拡縮部4…が形成されている。 Reference numeral 3 denotes a well-known lug that is integrally protruded from the tread portion 2 in a staggered arrangement, and for driving in wetlands, as shown in Figure 2, it has a sharp-pointed ridge shape that can easily dig into the wetland and withstand driving. . The wall thickness of this tread portion 2 is approximately the same as t above, but the portion corresponding to each lug 3 is thinner so that it can easily expand and contract due to internal pressure depending on the grounding and non-grounding conditions. A thick expansion/contraction portion 4 is formed.
5はサイドウオール部1からトレツド部2にか
けてその肩部を形成するシヨルダ部であり、傾斜
した断面をもつてtと同様の肉厚で形成されてい
る。 Reference numeral 5 designates a shoulder portion extending from the sidewall portion 1 to the tread portion 2, and is formed with an inclined cross section and the same wall thickness as t.
こうした扁平タイヤはバインダに装着され、通
常は内圧ゼロ或いは極低圧にて使用される。 These flat tires are attached to a binder and are normally used at zero or very low internal pressure.
走行すると第1図の実線で示す如く扁平なもの
が接地によつて第1図の仮想線で示す如く極扁平
化し、第2図で示すようにクローラタイプに似た
平担面をもつて好適に湿地を走行する訳であり、
特に上記構成からして、ラグ3…は強制的に喰込
んで駆動性能を安定・強力化する一方、拡縮部4
…は接地に応じて局部的に窪み土泥を捉えるが接
地を終えるとその膨縮容易なる特性を活かして土
泥を弾発し排土効果を好適に発揮する結果次の接
地に有利なものとなる。 When traveling, the flat object as shown by the solid line in Fig. 1 becomes extremely flat as shown by the imaginary line in Fig. 1 due to contact with the ground, and as shown in Fig. 2, it has a flat surface similar to a crawler type, making it suitable for use. It means driving through wetlands,
Especially considering the above configuration, the lugs 3... are forcibly bitten to stabilize and strengthen the drive performance, while the expansion/contraction parts 4
When it makes contact with the ground, it makes a local depression and captures the mud, but once it has finished making contact with the ground, it takes advantage of its ability to easily expand and contract to repel the mud and exerts a suitable soil removal effect, which is advantageous for the next contact. Become.
ところがこうしたタイヤである反面、従来の第
1図のタイヤ構造ではラグ3の基部に対応する部
分とサイドウオール部1との間に形成されたシヨ
ルダ部5の肉厚が前記t程度の一様なものとされ
てきたから、その部分はいわゆる腰が弱くラグ3
が不安定化していたのであり、その結果ぐらつき
易くなつてオペレータの操縦性能や操向性に影響
を与え、それと共にラグ3下部に対応する部分と
ラグ3間部分とが余り大きな強度差をもたず全体
的に撓む傾向を示すのでラグ3間での土落し効果
に今一つのものがあつた。 However, in contrast to such a tire, in the conventional tire structure shown in FIG. Because it has been treated as something, that part is what is called weak lag 3
As a result, it became unstable, which affected the operator's maneuverability and steering ability, and at the same time, there was a large strength difference between the part corresponding to the lower part of the lug 3 and the part between the lugs 3. Since it shows a tendency to flex as a whole, the effect of removing soil between the 3 lugs was not good.
更に、上記従来のタイヤは、傾斜地やエンジン
を切つた場合の本機の押し引きに際し、非常に重
いものとなつていた。それは、接地部のラグ3
が、第2図に示すようにトレツド部2に埋没する
ためであつた。 Furthermore, the conventional tires described above are extremely heavy when the machine is pushed and pulled on a slope or when the engine is turned off. It is lug 3 of the grounding part.
However, as shown in FIG. 2, it was buried in the tread portion 2.
そこで、本考案は、上記問題点に鑑みて案出さ
れたものであり、土落し効果の向上及び押し引き
抵抗の減少を図ることができる湿地走行用扁平型
ゴムタイヤを提供することを目的とする。従つ
て、その特徴は、実質タイヤ断面外輪郭形状が、
略平坦なクラウンと、その両側端から径内方幅外
方向に傾斜延設された略平面状のシヨルダ部と、
各シヨルダ部の外端から径内方向へ延設されてタ
イヤ最大幅を形成するサイドウオール部と、各サ
イドウオール部の径内端から径内方向幅内方向に
傾斜延設されたビード部とで形成され、両ビード
部の径内端を結ぶ仮想面を含む全体外輪郭が略八
角形に角ばつており、更に、前記左右シヨルダ部
が、サイドウオール部の肉厚よりも厚肉に形成さ
れている点にある。 Therefore, the present invention was devised in view of the above-mentioned problems, and the purpose is to provide a flat rubber tire for driving in wetlands that can improve the soil-shedding effect and reduce push-pull resistance. . Therefore, the characteristic is that the actual tire cross-sectional outer contour shape is
a substantially flat crown; a substantially planar shoulder portion extending slantingly from both ends of the crown in a radially inward and widthwise outward direction;
A sidewall portion extending radially inward from the outer end of each shoulder portion to form the maximum width of the tire, and a bead portion extending slantingly inward in the radial width direction from the radially inner end of each sidewall portion. The overall outer contour including the virtual plane connecting the radial inner ends of both bead portions is roughly octagonal, and the left and right shoulder portions are thicker than the side wall portions. It is in the point that it is.
以下、本考案の実施例を図面に基づき詳述す
る。 Hereinafter, embodiments of the present invention will be described in detail based on the drawings.
第3図に示すものは、農業機械とり分けバイン
ダに専用される本考案に係る湿地走行用扁平型ゴ
ムタイヤの軸心を含む断面形状を示し、31はタ
イヤ両側に形成されたサイドウオール部でこれは
第3図仮想線で示す如くバインダの負荷を受けて
大きく弾性変形し湾曲した断面となるものとされ
ている。その主要部の肉厚は左右共通のtとされ
ている。 Fig. 3 shows a cross-sectional shape including the axis of a flat type rubber tire for running on wetlands according to the present invention, which is used exclusively for agricultural machinery, especially binders. As shown by the imaginary line in FIG. 3, the cross-section is assumed to be largely elastically deformed and curved under the load of the binder. The wall thickness of the main part is t, which is the same for both the left and right sides.
32は外周のトレツド部でサイドウオール部3
1よりも可成り長い巾をもち、こうして全体が扁
平断面の環状タイヤが形成される。 32 is the tread part on the outer periphery and the sidewall part 3
1, thus forming an annular tire of generally flat cross section.
33はトレツド部32に千鳥状の配置をなして
一体的に突設された周知ラグであり湿地走行用と
して第4図の如く湿地内に喰込み易くかつ駆動に
耐える先鋭山型とされている。このトレツド部3
2の肉厚は仮想線で示す如く前記tと略同様なも
のとされているが、各ラグ33,33間に対応す
る部分では接地・非接地各状態に応じて内圧で容
易に膨縮すべく薄肉厚とした拡縮部34…が形成
されている。 Reference numeral 33 is a well-known lug that is integrally protruded from the tread portion 32 in a staggered arrangement, and for driving in a wetland, as shown in Fig. 4, it has a sharp-pointed ridge shape that can easily penetrate into the wetland and withstand driving. . This tread part 3
The wall thickness of 2 is approximately the same as t as shown by the imaginary line, but the portion corresponding between each lug 33 and 33 easily expands and contracts due to internal pressure depending on the grounding and non-grounding states. Expansion/contraction portions 34 are formed with as thin a wall thickness as possible.
35はサイドウオール部31からトレツド部3
2にかけてその肩部を形成するシヨルダ部であ
り、傾斜した断面をもつてtよりも厚肉に形成さ
れている。 35 is from the side wall part 31 to the tread part 3
This is the shoulder part that extends over 2 and forms the shoulder part, and is formed to have an inclined cross section and be thicker than t.
こうした扁平タイヤはバインダに装着され、通
常は内圧ゼロ或いは極低圧にて使用される。 These flat tires are attached to a binder and are normally used at zero or very low internal pressure.
走行すると第3図の実線で示す如く扁平なもの
が接地によつて第3図の仮想線の如く極扁平化
し、第4図に示す如くクローラタイプに似た平担
面をもつて好適に湿地を走行する訳である。 When running, the flat object as shown by the solid line in Fig. 3 becomes extremely flat as shown by the imaginary line in Fig. 3 due to contact with the ground, and as shown in Fig. 4, it becomes a suitable wetland with a flat surface similar to a crawler type. This means that the vehicle will be running.
すなわち、本考案は、実質タイヤ断面外輪郭形
状が、略平坦なクラウン32と、その両側端から
径内方向幅外方向に傾斜延設された略平面状のシ
ヨルダ部35と、各シヨルダ部35の外端から径
内方向へ延設されてタイヤ最大幅を形成するサイ
ドウオール部31と、各サイドウオール部31の
径内端から径内方向幅内方向に傾斜延設されたビ
ード部とで形成され、両ビード部の径内端を結ぶ
仮想面を含む全体外輪郭が略八角形に角ばつてお
り、更に、前記左右シヨルダ部35が、サイドウ
オール部31の肉厚tよりも厚肉に形成されてい
るのである。 That is, the present invention includes a crown 32 having a substantially flat tire cross-sectional outer contour shape, a substantially planar shoulder portion 35 extending obliquely from both ends of the crown 32 in a radially inward direction and a width outward direction, and each shoulder portion 35. A sidewall portion 31 extends radially inward from the outer end of the tire to form the maximum width of the tire, and a bead portion extends obliquely in the radially inward width direction from the radially inner end of each sidewall portion 31. The entire outer contour including the virtual plane connecting the radial inner ends of both bead portions is roughly octagonal, and the left and right shoulder portions 35 are thicker than the wall thickness t of the sidewall portion 31. It is formed in
上記本考案の実施例によれば、シヨルダ部35
の肉厚が、サイドウオール部31の肉厚tよりも
厚肉であり、しかもこの厚肉部は周方向に連続し
ているから、接地圧を受けてタイヤが変形するの
はサイドウオール部31のホイール嵌着側とな
り、ラグ33がトレツド部32に埋没することが
なくなるため、接地姿勢は第4図の如きものとな
る。 According to the above embodiment of the present invention, the shoulder portion 35
is thicker than the wall thickness t of the sidewall portion 31, and since this thick portion is continuous in the circumferential direction, it is the sidewall portion 31 that deforms the tire in response to ground pressure. Since the lug 33 is not buried in the tread portion 32, the ground contact posture is as shown in FIG. 4.
従つて、ラグ33がトレツド部32に埋没しな
いので押し引きが容易となる。 Therefore, since the lug 33 is not buried in the tread portion 32, pushing and pulling becomes easy.
更にシヨルダ部35の厚肉により、ラグ33が
補強されるので、ラグ33がぐらつくことがなく
なるため、操縦・操向性能が著しく向上するのみ
ならず、ラグ33間は増強なく従来通りの肉厚と
して残してあるので、ラグ33とラグ間相互には
強度差が生まれ、従つて拡縮部34がラグ33の
支えで独立して膨縮変形し土落し作用が活発化す
る訳である。 Furthermore, the thick walls of the shoulder portion 35 reinforce the lugs 33, preventing the lugs 33 from wobbling, significantly improving maneuverability and steering performance. Therefore, there is a strength difference between the lugs 33 and the lugs, and therefore, the expanding/contracting portion 34 expands and contracts independently with the support of the lugs 33, and the soil-shedding action becomes active.
尚、本考案は、上記実施例に限定されるもので
はなく、ラグの配列及びタイヤ装着対象は自由で
ある。 It should be noted that the present invention is not limited to the above-mentioned embodiments, and the arrangement of the lugs and the tire mounting target are free.
本考案によれば、実質タイヤ断面外輪郭形状が
略八角形に角ばつているので、タイヤは本機荷重
を受けた状態で、各部の中央位置が円弧に湾曲す
るよりも先に、各部間の角部が屈伸され、特にシ
ヨルダ部は略平面状になつているので、クラウン
部との角部が伸張され、サイドウオール部との角
部が屈曲され、これにより、サイドウオール部が
シヨルダ部及びビード部よりタイヤ幅方向外方へ
強く押出される膨張形状となり、傾斜地での等高
線走行及びUターン時においても、シヨルダ部及
びビード部にサイドウオール部を幅方向外方へ押
出そうとする力は維持され、ビード部とサイドウ
オール部との角部が屈曲することにより傾斜に対
応することになるので、本機のタイヤ幅方向移動
が防止され、本機のフラツキ又はズレ落ちが阻止
される。 According to the present invention, since the cross-sectional outer contour shape of the tire is substantially octagonal, when the tire is under the load of the machine, the gaps between each part are curved into an arc before the center position of each part curves into an arc. Since the corners of the frame are bent and stretched, and especially the shoulder part has a substantially planar shape, the corner with the crown part is stretched and the corner with the sidewall part is bent. It has an expanded shape that is strongly pushed outward in the width direction of the tire from the bead part, and even when driving on a contour line on a slope or making a U-turn, the shoulder part and bead part have a force that tries to push the sidewall part outward in the width direction. is maintained, and the corners of the bead and sidewall parts are bent to accommodate the slope, which prevents the machine from moving in the tire width direction and prevents the machine from wobbling or slipping. .
更にシヨルダ部の肉厚をサイドウオール部の肉
厚よりも厚肉としたので、ラグのトレツド部への
埋没を防止し、かつラグ間のトレツド部の膨縮変
形とラグの変形とに差を与え、しかもラグの腰を
強くすることができたので、操縦並びに操向性能
を安定かつ円滑なものとすることができ同時に増
強部以外の個所による土落し効果の向上したタイ
ヤを提供することができたものである。 Furthermore, since the wall thickness of the shoulder part is made thicker than that of the sidewall part, it is possible to prevent the lugs from being buried in the tread parts, and to reduce the difference between the expansion and contraction deformation of the tread parts between the lugs and the deformation of the lugs. Moreover, it is possible to strengthen the stiffness of the lugs, so that the steering and steering performance can be made stable and smooth, and at the same time, it is possible to provide a tire that has an improved soil-shedding effect at parts other than the reinforced part. It was made.
第1図は従来のタイヤ構造を示す断面図、第2
図は同走行態勢の説明図、第3図は本考案の実施
例のタイヤ構造を示す断面図、第4図は同走行態
勢の説明図である。
31…サイドウオール部、32…トレツド部、
35…シヨルダ部。
Figure 1 is a sectional view showing the conventional tire structure, Figure 2
FIG. 3 is a cross-sectional view showing the tire structure of an embodiment of the present invention, and FIG. 4 is an explanatory diagram of the same driving condition. 31...Side wall part, 32...Tread part,
35...Shoulder part.
Claims (1)
ン32と、その両側端から径内方向幅外方向に傾
斜延設された略平面状のシヨルダ部35と、各シ
ヨルダ部35の外端から径内方向へ延設されてタ
イヤ最大幅を形成するサイドウオール部31と、
各サイドウオール部31の径内端から径内方向幅
内方向に傾斜延設されたビード部とで形成され、
両ビード部の径内端を結ぶ仮想面を含む全体外輪
郭が略八角形に角ばつており、更に、前記左右シ
ヨルダ部35が、サイドウオール部31の肉厚t
よりも厚肉に形成されていることを特徴とする湿
地走行用扁平型ゴムタイヤ。 The substantially flat cross-sectional outer contour of the tire includes a crown 32 that is substantially flat, a substantially planar shoulder portion 35 that extends obliquely from both ends of the crown 32 in the radial inward direction and width outward direction, and a radially inward contour from the outer end of each shoulder portion 35. a sidewall portion 31 extending in the direction to form the maximum width of the tire;
It is formed with a bead portion extending obliquely from the radially inner end of each sidewall portion 31 in the radially inner direction and widthwise direction,
The entire outer contour including the virtual plane connecting the radial inner ends of both bead portions is roughly octagonal, and furthermore, the left and right shoulder portions 35 have a wall thickness t of the sidewall portion 31.
A flat rubber tire for driving in wetlands that is characterized by a thicker wall.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3330783U JPS59137802U (en) | 1983-03-05 | 1983-03-05 | Flat rubber tire for driving in wetlands |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3330783U JPS59137802U (en) | 1983-03-05 | 1983-03-05 | Flat rubber tire for driving in wetlands |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS59137802U JPS59137802U (en) | 1984-09-14 |
JPH0116642Y2 true JPH0116642Y2 (en) | 1989-05-16 |
Family
ID=30164104
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3330783U Granted JPS59137802U (en) | 1983-03-05 | 1983-03-05 | Flat rubber tire for driving in wetlands |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS59137802U (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3001888B2 (en) * | 1987-02-27 | 2000-01-24 | 井関農機株式会社 | Agricultural wheels |
-
1983
- 1983-03-05 JP JP3330783U patent/JPS59137802U/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS59137802U (en) | 1984-09-14 |
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