JP2882905B2 - Endless crawler track - Google Patents
Endless crawler trackInfo
- Publication number
- JP2882905B2 JP2882905B2 JP3139195A JP13919591A JP2882905B2 JP 2882905 B2 JP2882905 B2 JP 2882905B2 JP 3139195 A JP3139195 A JP 3139195A JP 13919591 A JP13919591 A JP 13919591A JP 2882905 B2 JP2882905 B2 JP 2882905B2
- Authority
- JP
- Japan
- Prior art keywords
- crawler
- crawler belt
- rubber
- endless
- rubber 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 - Lifetime
Links
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、建設機械等に用いられ
るクローラ用無端履帯のうち、カーボンブラックを含有
しない白色系の無端履帯に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a white endless crawler track containing no carbon black, among endless crawler tracks for crawlers used in construction machines and the like.
【０００２】[0002]
【従来の技術】クローラ用無端履帯に使用されるゴム材
料には、クローラの使用条件から、耐候性、耐屈曲性を
初め、耐久性、耐クラック性などの特性が要求される。
これらの要件を満足すべく、クローラ用無端履帯には、
一般に、ジエン系ゴムにカーボンブラックを配合した黒
色系ゴム材料が使用されている。2. Description of the Related Art Rubber materials used for endless crawler tracks for crawlers are required to have properties such as weather resistance and bending resistance, durability, and crack resistance, depending on the conditions of use of the crawlers.
To meet these requirements, the crawler endless track
Generally, a black rubber material obtained by blending carbon black with a diene rubber is used.
【０００３】しかし、近年の都市型工事の増加に伴っ
て、クローラが石畳やタイル貼り地、レンガ敷地、又は
適宜着色されたコンクリート等の路面を走行することが
多くなり、これらの路面にカーボンブラックの黒色痕が
残ることが問題となった。このため、タイル貼り地等の
路面を走行するクローラについては、カーボンブラック
に代えて、白色系充填剤を配合した白色系ゴム材料から
なるクローラ用無端履帯が好んで使用される傾向にあ
る。However, with the increase in urban construction in recent years, crawlers often travel on roads such as cobblestones, tiled grounds, brick sites, or appropriately colored concrete. There is a problem that black marks remain. For this reason, endless crawler tracks for crawlers made of a white rubber material mixed with a white filler tend to be used favorably for crawlers traveling on a road surface such as a tiled ground, instead of carbon black.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、白色系
ゴム材料からなるクローラ用無端履帯では、カーボンブ
ラックによる優れた光遮蔽効果を期待できない。その
上、老化防止効果に優れたアミン系老化防止剤は、それ
自体が着色しており、光やオゾン等で酸化されるとさら
に着色されるため、白色系ゴム材料に使用できない。こ
のため、白色系ゴム材料には、アミン系老化防止剤に代
えて、フェノール系の老化防止剤及びワックスを多量に
添加しているが、アミン系老化防止剤やカーボンブラッ
クを配合したとき程の老化防止効果は得られない。この
ため、白色系ゴム材料からなるクローラ用無端履帯を長
期間屋外で保管すると、オゾン、光等により劣化して、
無端履帯表面にクラックが発生するという問題がある。However, an endless crawler belt for crawlers made of a white rubber material cannot expect an excellent light shielding effect of carbon black. In addition, amine-based antioxidants having excellent antiaging effects are themselves colored and cannot be used for white rubber materials because they are further colored when oxidized by light or ozone. For this reason, a large amount of a phenolic antioxidant and a wax are added to the white rubber material in place of the amine antioxidant. No anti-aging effect is obtained. Therefore, if the crawler endless crawler made of white rubber material is stored outdoors for a long period of time, it will be degraded by ozone, light, etc.
There is a problem that cracks occur on the endless crawler belt surface.
【０００５】本発明はこのような事情に鑑みてなされた
ものであり、その目的とするところは、白色系ゴムクロ
ーラであって、耐候性に優れたクローラ用無端履帯を提
供することにある。The present invention has been made in view of such circumstances, and an object of the present invention is to provide an endless crawler belt for a crawler which is a white rubber crawler and has excellent weather resistance.
【０００６】[0006]
【課題を解決するための手段】本発明のクローラ用無端
履帯は、白色系充填剤を添加したジエン系ゴムを主成分
とするゴム材料で構成される履帯本体と、該履帯本体の
表面に形成された被覆層とからなるクローラ用無端履帯
であって、前記被覆層が、ＥＰＤＭ２０〜４０重量部及
びジエン系ゴム６０〜８０重量部からなるゴム成分１０
０重量部を含有するゴム材料で構成され、かつ、前記被
覆層の厚みが０．５〜５ｍｍである。An endless crawler belt for a crawler according to the present invention comprises a crawler belt body made of a rubber material mainly composed of a diene rubber to which a white filler is added, and a crawler belt body formed on the surface of the crawler belt body. An endless crawler track for a crawler comprising a coated layer, wherein the coating layer comprises 20 to 40 parts by weight of EPDM and 60 to 80 parts by weight of a diene rubber.
It is made of a rubber material containing 0 parts by weight, and the thickness of the coating layer is 0.5 to 5 mm.
【０００７】[0007]
【作用】本発明の無端履帯の表面を構成する被覆層は、
熱、光、オゾン等に対して安定なＥＰＤＭを２０〜４０
重量部配合したゴム成分を含有しているので、耐候性に
優れている。従って、履帯本体が耐候性に劣る白色系ゴ
ム材料で構成されているにも拘らず、無端履帯としては
耐候性を有し、長期間の屋外保管にも耐える。The covering layer constituting the surface of the endless crawler according to the present invention is:
20-40 EPDM stable against heat, light, ozone, etc.
Since it contains a rubber component blended by weight, it has excellent weather resistance. Therefore, although the crawler belt main body is made of a white rubber material having poor weather resistance, the endless crawler belt has weather resistance and can withstand long-term outdoor storage.
【０００８】一方、被覆層を構成しているＥＰＤＭを含
有するゴム材料は、強度の面で、履帯本体を構成するシ
エン系ゴム材料よりも劣るが、被覆層の厚みを０．５〜
５ｍｍとすることにより、クローラ用無端履帯の強度を
低下させずに済む。On the other hand, the EPDM-containing rubber material constituting the covering layer is inferior to the Cien rubber material constituting the crawler belt main body in terms of strength, but the thickness of the covering layer is 0.5 to 0.5%.
By setting it to 5 mm, the strength of the crawler endless crawler belt does not need to be reduced.
【０００９】[0009]
【実施例】以下、本発明一実施例を、図面に基づいて説
明する。図１は、本発明一実施例のクローラ用無端履帯
の一部の断面図である。図１において、クローラ用無端
履帯１は、履帯本体２と該履帯本体２のトレッド面に形
成された被覆層３とからなる。An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a partial sectional view of an endless crawler belt for a crawler according to an embodiment of the present invention. In FIG. 1, an endless crawler belt 1 for a crawler includes a crawler belt main body 2 and a coating layer 3 formed on a tread surface of the crawler belt main body 2.
【００１０】上記履帯本体２は、ホワイトカーボン等の
白色充填剤を添加したジエン系ゴムを主成分とするゴム
材料で構成される。ジエン系ゴムとしては、主鎖に不飽
和結合を含み、強度の面において優れている天然ゴム
（ＮＲと略記する）、スチレンブタジエンゴム（ＳＢＲ
と略記する）、ニトリルゴム（ＮＢＲと略記する）、ブ
タジエンゴム（ＢＲと略記する）等、及びこれらの混合
物が用いられる。The crawler belt body 2 is made of a rubber material mainly composed of a diene rubber to which a white filler such as white carbon is added. Examples of the diene rubber include natural rubber (abbreviated as NR) and styrene butadiene rubber (SBR) which have an unsaturated bond in the main chain and are excellent in strength.
, Nitrile rubber (abbreviated as NBR), butadiene rubber (abbreviated as BR), and the like, and mixtures thereof.
【００１１】被覆層３は、ＥＰＤＭ２０〜４０重量部及
びジエン系ゴム６０〜８０重量部からなるゴム成分１０
０重量部に、白色系充填剤、軟化剤、加硫剤、加硫促進
剤等の添加剤を適宜配合したゴム材料で構成される。被
覆層３を構成するゴム材料中のジエン系ゴムとしては、
履帯本体２を構成するジエン系ゴムと同様のゴムを用い
ることができる。The coating layer 3 comprises a rubber component 10 consisting of 20 to 40 parts by weight of EPDM and 60 to 80 parts by weight of a diene rubber.
It is composed of a rubber material in which additives such as a white filler, a softening agent, a vulcanizing agent, and a vulcanization accelerator are appropriately added to 0 parts by weight. The diene rubber in the rubber material constituting the coating layer 3 includes:
The same rubber as the diene rubber constituting the crawler belt main body 2 can be used.
【００１２】ＥＰＤＭとは、エチレンとプロピレンとヘ
キサジエン等の少量のジエン成分との三元重合体で、ジ
エン系ゴムのように主鎖に不飽和結合を含まないゴムを
いう。ＥＰＤＭは、ゴム材料に耐候性を付与するために
配合され、その種類は特に限定しないが、ヨウ素価１５
〜３０程度のものが好ましい。ゴム成分１００重量部に
対するＥＰＤＭの含有量は、２０〜４０重量部、好まし
くは３０〜３５重量部である。ＥＰＤＭの含有量が２０
重量部を下まわると、ＥＰＤＭによる耐候性の向上が期
待出来ない。一方、ＥＰＤＭの含有量が４０重量部を上
まわると、ゴム成分中のジエン系ゴムの含有量が相対的
に少なくなるため、履帯本体２との接着性が低下する。EPDM is a terpolymer of ethylene, propylene and a small amount of a diene component such as hexadiene, and is a rubber having no unsaturated bond in the main chain, such as a diene rubber. EPDM is blended to impart weather resistance to the rubber material, and the type thereof is not particularly limited.
Those having about 30 are preferred. The content of EPDM with respect to 100 parts by weight of the rubber component is 20 to 40 parts by weight, preferably 30 to 35 parts by weight. EPDM content of 20
If the amount is less than the weight part, improvement of weather resistance by EPDM cannot be expected. On the other hand, when the content of EPDM exceeds 40 parts by weight, the content of the diene rubber in the rubber component becomes relatively small, so that the adhesion to the crawler belt body 2 is reduced.
【００１３】被覆層３は、履帯本体２表面に、上記ＥＰ
ＤＭを配合したゴム材料を流して加硫成形することによ
り形成される。加硫成形において、被覆層３を構成する
ゴム成分中のジエン系ゴムが、履帯本体２を構成するゴ
ム材料と架橋結合することにより接着する。The covering layer 3 is formed on the surface of the crawler belt main body 2 by the EP.
It is formed by flowing and vulcanizing and molding a rubber material containing DM. In the vulcanization molding, the diene rubber in the rubber component constituting the covering layer 3 is bonded to the rubber material constituting the crawler belt body 2 by cross-linking.
【００１４】被覆層３の厚みは、０．５〜５ｍｍ、好ま
しくは１〜３ｍｍである。被覆層３の厚みが０．５ｍｍ
を下まわると、加硫成形に際してゴム材料が流れてしま
い、被覆層３の厚みが均一にならない。一方、被覆層３
の厚みが５ｍｍを上まわると、ＥＰＤＭを含有するゴム
材料がジエン系ゴム材料と比べて強度的に劣るため、路
面走行において、被覆層３が石などで傷ついてクラック
となる。The thickness of the coating layer 3 is 0.5 to 5 mm, preferably 1 to 3 mm. The thickness of the coating layer 3 is 0.5 mm
When the temperature is below the range, the rubber material flows during the vulcanization molding, and the thickness of the coating layer 3 is not uniform. On the other hand, the coating layer 3
When the thickness exceeds 5 mm, the rubber material containing EPDM is inferior in strength compared to the diene rubber material, so that the coating layer 3 is damaged by stones or the like and cracks during traveling on the road.
【００１５】以上のような構成を有するクローラ用無端
履帯は、履帯本体２が耐候性に劣った白色系ゴム材料で
構成されていても、耐候性に優れたゴム材料で構成され
る被覆層３がトレッド面を構成しているので、無端履帯
１として耐候性を有し、長期間の屋外保管に耐える。ま
た、履帯本体２及び被覆層３のいずれにもカーボンブラ
ックが配合されてないので、タイル等の路面上を走行し
ても美観を損なうような黒色痕を残さない。一方、ゴム
クローラのトレッド面は、強度面でジエン系ゴムを主成
分とするゴム材料よりも劣るゴム材料で構成されるが、
被覆層３の厚みを０．５〜５ｍｍとすることにより、従
来の白色系クローラと同程度の強度を保持する。The crawler endless crawler having the above-described structure has a coating layer 3 made of a rubber material having excellent weather resistance even if the crawler belt body 2 is made of a white rubber material having poor weather resistance. Constitutes the tread surface, so that the endless crawler belt 1 has weather resistance and withstands long-term outdoor storage. In addition, since neither the crawler belt main body 2 nor the coating layer 3 contains carbon black, even when the vehicle travels on a road surface such as a tile, no black mark that impairs aesthetic appearance is left. On the other hand, the tread surface of the rubber crawler is made of a rubber material that is inferior to a rubber material mainly composed of diene rubber in terms of strength,
By setting the thickness of the coating layer 3 to 0.5 to 5 mm, the same strength as a conventional white crawler is maintained.
【００１６】なお、本実施例においては、被覆層３をク
ローラ用無端履帯のトレッド面にのみ形成したが、本発
明はこれに限らず、履帯本体２の表面全面をＥＰＤＭを
配合したゴム材料で被覆すれば、トレッド面のみならず
クローラ用無端履帯全体に耐候性を付与できて好まし
い。In this embodiment, the covering layer 3 is formed only on the tread surface of the crawler endless crawler belt. However, the present invention is not limited to this, and the entire surface of the crawler belt main body 2 is made of a rubber material containing EPDM. Coating is preferable because weather resistance can be imparted not only to the tread surface but also to the entire crawler endless crawler belt.
【００１７】また、本実施例では、充填剤としてホワイ
トカーボンを使用した白色系無端履帯であったが、本発
明のクローラ用無端履帯は、白色系に限らず、赤色系、
青色系に着色されたクローラ用無端履帯にも適用でき
る。In this embodiment, the white endless crawler belt using white carbon as a filler is used. However, the crawler endless crawler belt of the present invention is not limited to a white crawler belt, but may be a red crawler belt.
It can also be applied to crawler endless tracks that are colored blue.
【００１８】〔具体的実施例〕（実施例１〜４） ゴム成分中のジエン系ゴム（ＮＲ及び／又はＢＲ）及び
ＥＰＤＭの配合量を、２０〜４０重量部の範囲内で表１
に示すように変え、以下の添加剤を配合して、被覆層３
を構成するＥＰＤＭ配合のゴム材料を調製し、実施例１
〜４の試験片を作成した。[Specific Examples] (Examples 1 to 4) The amounts of the diene rubber (NR and / or BR) and EPDM in the rubber component were adjusted within the range of 20 to 40 parts by weight as shown in Table 1.
And the following additives are blended to form the coating layer 3
Example 1 was prepared by preparing a rubber material containing EPDM,
~ 4 test pieces were prepared.
【００１９】 ホワイトカーボン ５０重量部 酸化亜鉛 ５重量部 ステアリン酸（可塑剤） ２重量部 ナフテンオイル ５重量部 ＣＢＳ（加硫促進剤） ２重量部 イオウ １．７５重量部White carbon 50 parts by weight Zinc oxide 5 parts by weight Stearic acid (plasticizer) 2 parts by weight Naphthene oil 5 parts by weight CBS (vulcanization accelerator) 2 parts by weight Sulfur 1.75 parts by weight
【００２０】（実施例５〜９） 上記実施例２のゴム材料を用いて、履帯本体２のトレッ
ド面に被覆層３を形成した。被覆層３の厚みを０．５〜
５．０ｍｍの範囲内で表２に示すように変えて、実施例
５〜９のクローラ用無端履帯を作成した。(Examples 5 to 9) The covering layer 3 was formed on the tread surface of the crawler belt main body 2 using the rubber material of Example 2 described above. The thickness of the coating layer 3 is 0.5 to
Endless crawler tracks for crawlers of Examples 5 to 9 were prepared by changing the range as shown in Table 2 within the range of 5.0 mm.
【００２１】（比較例１〜５） ジエン系ゴム（ＮＲ及び／又はＢＲ）とＥＰＤＭとの配
合量を表１に示すように変えた以外は実施例と同様にし
たゴム材料を用いて、比較例１〜５の試験片を作成し
た。なお、比較例１については、ＥＰＤＭを含有しない
ので老化防止剤として、スチレン化フェノールとパラフ
ィンワックスを添加した。(Comparative Examples 1 to 5) A rubber material was prepared in the same manner as in the Examples except that the amounts of the diene rubber (NR and / or BR) and EPDM were changed as shown in Table 1. Test pieces of Examples 1 to 5 were prepared. Since Comparative Example 1 did not contain EPDM, styrenated phenol and paraffin wax were added as antioxidants.
【００２２】（比較例６及び７） 上記実施例２のゴム材料を用いて、履帯本体２のトレッ
ド面に被覆層３を形成した。被覆層３の厚みが０．３ｍ
ｍ（比較例６）、７．０ｍｍ（比較例７）のクローラ用
無端履帯を作成した。Comparative Examples 6 and 7 The covering layer 3 was formed on the tread surface of the crawler belt main body 2 using the rubber material of the above-described Example 2. The thickness of the coating layer 3 is 0.3 m
m (Comparative Example 6), an endless crawler crawler of 7.0 mm (Comparative Example 7) was prepared.
【００２３】（評価） （ａ）耐オゾン性： ＪＩＳ Ｋ６３０１に従い、温度４０℃、オゾン濃度５
０ｐｐｈｍ、伸び２０％の条件にして、実施例１〜４及
び比較例１〜５で作成した試験片についてオゾン劣化試
験を行った。１００時間後に試験片の劣化状態を観察
し、以下の基準に基づいて評価した。生じた亀裂の数に
より、Ａ（亀裂少数）〜Ｃ（亀裂無数）の３段階で評価
した。また、亀裂の大きさ及び深さにより、１（肉眼で
は見えないが１０倍の拡大鏡では確認できるもの）〜５
（３ｍｍ以上の亀裂又は切断をおこしそうなもの）の５
段階で評価した。結果を表１に示す。(Evaluation) (a) Ozone resistance: According to JIS K6301, a temperature of 40 ° C. and an ozone concentration of 5
The ozone deterioration test was performed on the test pieces prepared in Examples 1 to 4 and Comparative Examples 1 to 5 under the conditions of 0 pphm and an elongation of 20%. After 100 hours, the deterioration state of the test piece was observed and evaluated based on the following criteria. According to the number of generated cracks, evaluation was made in three stages from A (small number of cracks) to C (infinite number of cracks). In addition, depending on the size and depth of the crack, 1 to 5 (not visible to the naked eye, but can be confirmed with a magnifying glass of 10 times)
(Three cracks or cuts of 3 mm or more are likely to occur) 5
It was evaluated on a scale. Table 1 shows the results.
【００２４】（ｂ）履帯本体との接着力： 実施例１〜４及び比較例１〜５で作成した試験片を、履
帯本体の試験片と加硫成形し、成形品について剥離試験
を行った。試験片が剥離したときの剥離力を、履帯本体
との接着力（ｋｇｆ／ｃｍ）として表した。結果を表１
に示す。(B) Adhesive force to crawler belt main body: The test pieces prepared in Examples 1 to 4 and Comparative Examples 1 to 5 were vulcanized and molded with the crawler belt main body test pieces, and a peel test was performed on the molded product. . The peeling force when the test piece was peeled was expressed as the adhesive force (kgf / cm) with the crawler belt main body. Table 1 shows the results
Shown in
【００２５】（ｃ）被覆層の厚さとの関係： 実施例５〜９及び比較例６、７で作成したクローラ用無
端履帯の耐オゾン性を評価するために、上記オゾン劣化
試験を行った。結果を表２に示す。また、耐クラック性
を評価すべく、かかるクローラ用無端履帯を装着したク
ローラを砥石上で走行させ、２５時間後に無端履帯のト
レッド面の外観を観察した。結果を表２に示す。(C) Relationship with coating layer thickness: The above-mentioned ozone deterioration test was performed to evaluate the ozone resistance of the crawler endless crawler belts prepared in Examples 5 to 9 and Comparative Examples 6 and 7. Table 2 shows the results. Further, in order to evaluate the crack resistance, the crawler equipped with the endless crawler belt for crawler was run on a grindstone, and the appearance of the tread surface of the endless crawler belt was observed after 25 hours. Table 2 shows the results.
【００２６】（評価結果）(Evaluation results)
【表１】 [Table 1]
【００２７】表１から分かるように、ゴム成分中のＥＰ
ＤＭの含有量が２０〜４０重量部のゴム材料（実施例１
〜４）は、耐オゾン性、履帯本体との接着力のいずれに
も優れている。一方、ＥＰＤＭの含有量が多すぎると
（比較例４、５）、履帯本体との接着力が劣り、ＥＰＤ
Ｍの含有量が少なすぎる（比較例１〜３）、耐オゾン性
が低下する。As can be seen from Table 1, EP in the rubber component
Rubber material having a DM content of 20 to 40 parts by weight (Example 1)
4) are excellent in both ozone resistance and adhesion to the crawler belt body. On the other hand, if the content of EPDM is too large (Comparative Examples 4 and 5), the adhesion to the crawler belt body is inferior, and EPD
When the content of M is too small (Comparative Examples 1 to 3), the ozone resistance decreases.
【００２８】[0028]
【表２】 [Table 2]
【００２９】表２からわかるように、被覆層の厚さが本
発明の範囲内の無端履帯（実施例５〜９）は、耐オゾン
性、耐クラック性のいずれも優れている。一方、被覆層
の厚みが小さい（比較例６）と耐オゾン性が劣り、被覆
層の厚みが大きい（比較例７）と走行後にクラック発生
が認められた。As can be seen from Table 2, the endless crawler belt (Examples 5 to 9) in which the thickness of the coating layer falls within the range of the present invention is excellent in both ozone resistance and crack resistance. On the other hand, when the thickness of the coating layer was small (Comparative Example 6), the ozone resistance was poor, and when the thickness of the coating layer was large (Comparative Example 7), cracks were observed after running.
【００３０】[0030]
【発明の効果】本発明のクローラ用無端履帯は、表面の
被覆層が耐候性に優れたＥＰＤＭを配合したゴム材料で
構成されているので、履帯本体が耐候性に劣っていて
も、クローラ用無端履帯として耐候性を有する。よっ
て、長期間の屋外保管にも耐える。また、被覆層を構成
しているゴム材料は、強度面においてジエン系ゴムを主
成分とするゴム材料に比べて劣っているが、被覆層の厚
みを０．５〜５．０ｍｍの範囲内とすることにより、ク
ローラ用無端履帯のトレッド面の強度を低下させずに済
む。According to the endless crawler belt for crawlers of the present invention, the surface covering layer is made of a rubber material containing EPDM having excellent weather resistance. It has weather resistance as an endless track. Therefore, it can withstand long-term outdoor storage. The rubber material constituting the coating layer is inferior to the rubber material containing diene rubber as a main component in strength, but the thickness of the coating layer is in the range of 0.5 to 5.0 mm. By doing so, the strength of the tread surface of the crawler endless crawler belt does not need to be reduced.
【００３１】従って、本発明のクローラ用無端履帯は、
タイル貼り地等の上を走行しても、黒色痕を残さない白
色系のクローラ用無端履帯であって、光、オゾンに対し
て安定で、かつトレッド面の強度が低下することもな
い。Therefore, the crawler endless crawler of the present invention is
A white crawler endless crawler belt that does not leave black marks even when traveling on a tiled ground or the like, is stable against light and ozone, and does not decrease in tread surface strength.
【図１】本発明一実施例のクローラ用無端履帯の部分断
面図である。FIG. 1 is a partial sectional view of an endless crawler belt for a crawler according to an embodiment of the present invention.
１ クローラ用無端履帯 ２ 履帯本体 ３ 被覆層 DESCRIPTION OF SYMBOLS 1 Endless track for crawler 2 Track body 3 Cover layer
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) B62D 55/253 ──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. 6 , DB name) B62D 55/253
Claims (1)
主成分とするゴム材料で構成される履帯本体と、該履帯
本体の表面に形成された被覆層とからなるクローラ用無
端履帯であって、前記被覆層が、ＥＰＤＭ２０〜４０重
量部及びジエン系ゴム６０〜８０重量部からなるゴム成
分１００重量部を含有するゴム材料で構成され、かつ、
前記被覆層の厚みが０．５〜５ｍｍであることを特徴と
するクローラ用無端履帯。1. An endless crawler track for a crawler, comprising: a crawler belt main body made of a rubber material mainly composed of a diene rubber to which a white filler is added; and a coating layer formed on the surface of the crawler belt main body. The coating layer is made of a rubber material containing 100 to 40 parts by weight of a rubber component composed of 20 to 40 parts by weight of EPDM and 60 to 80 parts by weight of a diene rubber; and
An endless crawler belt for a crawler, wherein the thickness of the coating layer is 0.5 to 5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3139195A JP2882905B2 (en) | 1991-06-11 | 1991-06-11 | Endless crawler track |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3139195A JP2882905B2 (en) | 1991-06-11 | 1991-06-11 | Endless crawler track |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04362481A JPH04362481A (en) | 1992-12-15 |
| JP2882905B2 true JP2882905B2 (en) | 1999-04-19 |
Family
ID=15239772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3139195A Expired - Lifetime JP2882905B2 (en) | 1991-06-11 | 1991-06-11 | Endless crawler track |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2882905B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018112642A1 (en) * | 2016-12-20 | 2018-06-28 | Camso Inc. | Track system for traction of a vehicle |
-
1991
- 1991-06-11 JP JP3139195A patent/JP2882905B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04362481A (en) | 1992-12-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1621578B1 (en) | Rubber composition comprising a corncob granule dispersion and tire having a component thereof | |
| TW200602430A (en) | Rubber composition | |
| CN106046459A (en) | Wet-skid-resistant snowfield tire tread rubber and preparation method thereof | |
| CN110041580B (en) | Rubber material with good wear-resistant and skid-resistant strength, and preparation method and application thereof | |
| KR101985520B1 (en) | Non-slip composition for road pavement excellent in functionality and non-slip paving method therewith | |
| CN1078280A (en) | Conformable pavement marking tape | |
| EP0538700B1 (en) | Tire with rubber sidewall | |
| US3562193A (en) | Composition containing polymer latex,aromatic oil,cured elastomeric aggregates and curing agents | |
| EP2033813A1 (en) | Tire with tread having enhanced wet traction | |
| CN1079048C (en) | Plastic paving material | |
| JP3771942B2 (en) | Tread rubber composition | |
| CN105778311A (en) | Outer rubber material for steel wire-woven hydraulic rubber pipe and preparation method of outer rubber material | |
| JP3244841B2 (en) | Rubber composition for tread | |
| JP2882905B2 (en) | Endless crawler track | |
| CA1208389A (en) | Rubber composition containing a silicone raw rubber | |
| AU668108B2 (en) | Tire with dual cap tread | |
| KR100431887B1 (en) | Rubber Sidewalk Block Having Layers | |
| TR200101833T2 (en) | Highly abrasion resistant tire for vehicles and vulcanizable rubber for construction | |
| CA2180912A1 (en) | Tire with rubber sidewall | |
| JPH08134267A (en) | Rubber composition for tire tread | |
| JPH0455389B2 (en) | ||
| CN110483854A (en) | A kind of noctilucent tyre and its processing technology | |
| KR102629563B1 (en) | Pavement Marking Tape with Excellent Adhesive property and Durability | |
| KR790001559B1 (en) | Vulcanizable rubber mixture for tire treads having improved skid resistance | |
| JPS59126443A (en) | Tread rubber composition for snow tire |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080913 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Year of fee payment: 6 Free format text: PAYMENT UNTIL: 20080913 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Year of fee payment: 7 Free format text: PAYMENT UNTIL: 20090913 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Year of fee payment: 7 Free format text: PAYMENT UNTIL: 20090913 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Year of fee payment: 8 Free format text: PAYMENT UNTIL: 20100913 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100913 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110913 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Year of fee payment: 9 Free format text: PAYMENT UNTIL: 20110913 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120913 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Year of fee payment: 11 Free format text: PAYMENT UNTIL: 20130913 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |