JP3265550B2 - Rubber Crawler Structure - Google Patents
Rubber Crawler StructureInfo
- Publication number
- JP3265550B2 JP3265550B2 JP12063893A JP12063893A JP3265550B2 JP 3265550 B2 JP3265550 B2 JP 3265550B2 JP 12063893 A JP12063893 A JP 12063893A JP 12063893 A JP12063893 A JP 12063893A JP 3265550 B2 JP3265550 B2 JP 3265550B2
- Authority
- JP
- Japan
- Prior art keywords
- rubber
- rubber crawler
- crawler
- corner
- mold
- 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
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【産業上の利用分野】本発明はゴムクロ−ラの構造に関
し、特に言えば、芯金が埋設されていないタイプのゴム
クロ−ラの構造に係るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a rubber crawler, and more particularly to a structure of a rubber crawler in which a core is not buried.
【０００２】[0002]
【従来の技術】近年、ゴムクロ−ラは、農業機械をはじ
めとして建設機械や土木作業機械に広く使用されてい
る。ゴムクロ−ラの構造については２通りあり、ゴムク
ロ−ラの内周面側に突出する角部をスプロケットの係合
部として推進力を伝えるゴムクロ−ラがある。このタイ
プのゴムクロ−ラの角部はゴム部よりなっており、通常
は芯金がゴム中に埋設することがないので、ゴムクロ−
ラの軽量化が図れるといわれている。2. Description of the Related Art In recent years, rubber crawlers have been widely used in agricultural machines, construction machines and civil engineering machines. There are two types of rubber crawler structures, and there is a rubber crawler that transmits a propulsive force by using a corner protruding toward the inner peripheral surface side of the rubber crawler as an engagement portion of a sprocket. The corners of this type of rubber crawler are made of rubber, and usually the core metal is not embedded in the rubber.
It is said that the weight of the la can be reduced.
【０００３】[0003]
【発明が解決しようとする課題】しかるに、このゴムク
ロ−ラの角部の剛性を確保するために、ゴムボリュ−ム
を多くしているのが通例である。このため、ゴムクロ−
ラの製造の際には、ゴムの熱伝導率が低いことと熱伝導
率の高い芯金が埋設されてないこともあり、通常の芯金
入りゴムクロ−ラより加硫成形時間が長いという欠点が
あった。本発明は、かかる従来の技術の問題点に鑑みて
なされたものであって、ゴムクロ−ラの軽量化と共に加
硫成形時の成形時間の短縮をねらったものである。However, in order to ensure the rigidity of the corners of the rubber crawler, it is customary to increase the number of rubber volumes. For this reason, rubber cloth
When manufacturing rubber, the low thermal conductivity of rubber and the fact that a core metal with high thermal conductivity is not embedded may result in a longer vulcanization molding time than that of a rubber cored rubber crawler. was there. SUMMARY OF THE INVENTION The present invention has been made in view of the problems of the conventional technology, and has as its object to reduce the weight of a rubber crawler and the molding time during vulcanization molding.
【０００４】[0004]
【課題を解決するための手段】本発明におけるゴムクロ
−ラの構造は、無端状ゴム弾性体中にその長手方向に向
って、かつ、その幅方向の左右に振り分けて抗張体が埋
設され、その内周面側の幅方向中央にスプロケットとの
係合部となるゴム製角部と、外周面側にゴムラグと、が
形成されたゴムクロ−ラにあって、角部に対向して窪み
を形成し、該窪みが前記抗張体の埋設部位と同等或いは
これよりも内周側に達しているゴムクロ−ラの構造であ
り、好ましくは、窪みがゴムクロ−ラの外周側より構成
され、或いは窪みが角部を貫通しているものである。According to the rubber crawler structure of the present invention, a tensile body is embedded in an endless rubber elastic body in such a manner as to be directed in the longitudinal direction and to the right and left in the width direction. The rubber crawler is formed with a rubber corner portion serving as an engagement portion with the sprocket at the center in the width direction on the inner peripheral surface side, and a rubber lug on the outer peripheral surface side. A rubber crawler structure in which the depression is equal to or embedded on the inner peripheral side of the embedding portion of the tensile member, preferably, the concave is formed from the outer peripheral side of the rubber crawler, or The depression penetrates the corner.
【０００５】[0005]
【作用】本発明のゴムクロ−ラは以上の構造を有するも
のであり、一口で言えばゴム材料の最も厚い角部の部位
に対し、好ましくは外周側より窪みを形成し、熱伝導率
のよいスチ−ルコ−ド列の埋設位置と同等乃至はこれよ
りも内側に位置させ、ゴム材料をできるだけ薄くかつ均
一化して熱伝導率の差による欠点を解消したものであ
る。このため、ゴムクロ−ラを形成する際のモ−ルドの
形状を、角部に対向する部位に所定の大きさ・高さの膨
突部を備えたものである。The rubber crawler according to the present invention has the above-mentioned structure. In short, the rubber crawler preferably has a recess at the thickest corner portion of the rubber material from the outer peripheral side, and has good heat conductivity. The rubber material is positioned as thin as possible or at the same position as the steel cord row, and the rubber material is made as thin and uniform as possible to eliminate the drawbacks due to the difference in thermal conductivity. For this reason, the shape of the mold when forming the rubber crawler is such that a protrusion having a predetermined size and height is provided at a portion facing the corner.
【０００６】このことを更に製法的に言えば、上下に開
放するモ−ルドを合わせ、両モ−ルドにて形成されたキ
ャビテイ内にゴム材料を充満させて加硫成形してなるも
のであって、ゴムクロ−ラの内周側に突出する角部を形
成する凹部をモ−ルド面に形成し、これに対向するモ−
ルド面に膨突部を形成し、角部を形成する両モ−ルド面
の間隔をせまくしたものである。In terms of the manufacturing method, the molds that are opened up and down are aligned, and a cavity formed by both molds is filled with a rubber material and vulcanized. Then, a concave portion forming a corner protruding on the inner peripheral side of the rubber crawler is formed on the mold surface, and a mold facing the concave portion is formed.
A protrusion is formed on the mold surface, and the interval between the two mold surfaces forming the corner is reduced.
【０００７】従って、熱伝導率にすぐれたモ−ルドがゴ
ムの厚みの大きい角部の外周側に近づくこととなるた
め、加硫成形の際の時間が短かくてすむこととなったも
のである。勿論、ゴムクロ−ラの大きさによって、加硫
成形の条件は異なるが、通常行われている１６０度で６
０分の加硫成形条件であったものが、４０分程度ですむ
こととなり、生産性が高くなることは明らかである。更
にゴムクロ−ラ全体を考えれば、この部位のゴムが省略
されることとなり、材料の軽減による軽量化を図られる
ことともなる。[0007] Accordingly, since the mold having excellent thermal conductivity approaches the outer peripheral side of the corner portion where the thickness of the rubber is large, the vulcanization molding time is short. is there. Of course, the conditions for vulcanization molding differ depending on the size of the rubber crawler.
The vulcanization molding condition of 0 minutes is reduced to about 40 minutes, and it is clear that productivity is increased. Further, considering the entire rubber crawler, the rubber at this portion is omitted, and the weight can be reduced by reducing the material.
【０００８】[0008]
【実施例】以下、本発明を実施例をもって更に詳細に説
明する。図１は本発明の第１におけるゴムクロ−ラの第
１実施例を示す内周面の平面図、図２はその外周面の平
面図、図３はその側面図である。又、図４は図１におけ
るＡ−Ａ線での断面図であり、図５はＢ−Ｂ線での断面
図である。図において、１はゴムクロ−ラの基本をなす
無端状のゴム弾性体であり、その内周面側の中央に一定
間隔をもち弾性体１と同体をなす角部２、２…が形成さ
れている。又、無端状のゴム弾性体１の外周側には、こ
れ又弾性体１と同体のゴムラグ３、３…が形成されてい
る。EXAMPLES Hereinafter, the present invention will be described in more detail with reference to Examples. FIG. 1 is a plan view of an inner peripheral surface of a first embodiment of a rubber crawler according to the present invention, FIG. 2 is a plan view of an outer peripheral surface thereof, and FIG. 3 is a side view thereof. FIG. 4 is a sectional view taken along line AA in FIG. 1, and FIG. 5 is a sectional view taken along line BB in FIG. In the figure, reference numeral 1 denotes an endless rubber elastic body which forms the basis of a rubber crawler. Corners 2, 2,... I have. On the outer peripheral side of the endless rubber elastic body 1, rubber lugs 3, 3,...
【０００９】そして、ゴム弾性体１の長手方向に向かっ
て抗張体としてのスチ−ルコ−ド列４が一列に並べられ
て埋設されている。前記した角部２は図示しないスプロ
ケットとの係合部となり、或いはスプロケットや転輪と
の脱輪防止用係合部となるものである。A steel cord row 4 as a tensile body is embedded in the rubber elastic body 1 in the longitudinal direction. The above-mentioned corner portion 2 serves as an engagement portion with a sprocket (not shown) or an engagement portion for preventing wheel separation with a sprocket or a wheel.
【００１０】さて、図示するように角部２の部位はゴム
ラグ３の位置にもよるが、ゴムクロ−ラ全体としては最
も厚さの厚い個所である。しかるに、本発明のこの例に
あっては、ゴムクロ−ラの外周側よりこの部位２に向っ
て窪み５を形成したものである。この窪み５は、ゴム材
料の使用量の低減となることは勿論であるが、ゴムクロ
−ラの加硫成形時にあって、熱伝導率のよいモ−ルドの
部位がここに挿入されることとなり、成形時間の短縮が
もたらされるものである。As shown in the figure, the corner 2 is the thickest portion of the rubber crawler as a whole, depending on the position of the rubber lug 3. However, in this example of the present invention, the depression 5 is formed from the outer peripheral side of the rubber crawler toward the portion 2. Of course, the depression 5 reduces the amount of rubber material used, but at the time of vulcanization molding of the rubber crawler, a mold part having good heat conductivity is inserted into this. , Shortening the molding time.
【００１１】そして、窪み５は図示するようにスチ−ル
コ−ド列４より内方のゴムクロ−ラの内周面を越えて角
部２内に入り込んだものであり、このようにすることに
より、いずれも熱伝導率のよいスチ−ルコ−ド列４と、
モ−ルドの膨突部との存在により、成形時間の短縮が確
実になされることとなるのである。As shown in the figure, the recess 5 is formed in the corner 2 beyond the inner peripheral surface of the rubber crawler inward from the steel cord row 4. A steel code row 4 having good thermal conductivity,
The presence of the mold bulge ensures that the molding time is shortened.
【００１２】この窪み５の深さは、そのゴムクロ−ラの
形状及び使用予定状態等により選択されるが、スチ−ル
コ−ド列４の配置部位と略同じ位置におかれ、或いはこ
れよりも深い（内周側）位置に置かれることとなる。場
合によっては、図６の実施例２に示すように窪み５が角
部２をつらぬいた形状であってもよい。The depth of the depression 5 is selected depending on the shape of the rubber crawler and the intended use, and the like. It will be placed at a deep (inner circumference) position. In some cases, as shown in the second embodiment in FIG.
【００１３】図７は、本発明のゴムクロ−ラの別例を示
す断面図であり、この例では成形時に加熱に時間がかか
る部位、即ち角部４にその頂部より窪み５1 を形成した
例である。こうすることにより、成形時にゴム材料への
熱伝導が比較的均一化されるものであり、ゴム材料の使
用量の低減ともなるものである。かかる窪み５1 は、モ
−ルドの角部を形成する凹み内に突出部をもうけること
で簡単にできることとなる。[0013] Figure 7 Gomukuro of the present invention - is a cross-sectional view showing another example of La, in this example was formed portion taking time for heating during molding, namely a 5 1 recesses from its top in the corner section 4 Example It is. By doing so, heat conduction to the rubber material during molding is made relatively uniform, and the amount of rubber material used is reduced. Such recess 5 1, mode - so that the can is easy by providing the protruding portion into the recess to form the corners of the field.
【００１４】さて、図８はゴムクロ−ラを加硫成形する
際に用いられるモ−ルドの断面図を示すが、上モ−ルド
１１にはゴムラグを形成する凹部１２が備えられ、一
方、下モ−ルド１３には角部が形成される凹部１４が備
えられていて、これら上下モ−ルド１１、１３が合せら
れ、ゴムクロ−ラを形成するキャビテイ１５を形取るこ
ととなる。FIG. 8 is a sectional view of a mold used for vulcanizing and molding a rubber crawler. The upper mold 11 is provided with a concave portion 12 for forming a rubber lug, while the lower mold 11 is provided with a concave portion 12. The mold 13 is provided with a concave portion 14 in which a corner is formed, and these upper and lower molds 11 and 13 are combined to form a cavity 15 forming a rubber crawler.
【００１５】しかるに、上モ−ルド１１には、下モ−ル
ド１３の凹部１４に対向して膨突部１６が形成され、こ
れが前記したゴムクロ−ラの窪み５を形成することとな
る。図中、２１はキャビテイ１５内に予め張設されたス
チ−ルコ−ド列であり、この熱伝導率のよいスチ−ルコ
−ド列２１と、このスチ−ルコ−ド列２１の配置を越え
て下モ−ルド１３側に突出したこれ又熱伝導率のよいモ
−ルド１１の膨突部１６によって、ゴムクロ−ラの加硫
成形時の熱に対する厚みを比較的平均的なものとするも
のであって、このため、ゴムの加硫成形時間が従来のも
のより短縮されることとなったものである。In the upper mold 11, however, a bulging portion 16 is formed so as to face the concave portion 14 of the lower mold 13, and the bulging portion 16 forms the above-described recess 5 of the rubber crawler. In the figure, reference numeral 21 denotes a steel cord row stretched in the cavity 15 in advance, and the steel cord row 21 having a good thermal conductivity and the steel cord row 21 are arranged beyond the steel cord row 21. The protrusions 16 of the mold 11 having good thermal conductivity and protruding toward the lower mold 13 make the thickness of the rubber crawler against heat during vulcanization molding relatively average. Therefore, the vulcanization molding time of the rubber is shorter than that of the conventional one.
【００１６】[0016]
【発明の効果】本発明は以上の通りのゴムクロ−ラの構
造であって、製法の面から言えばゴム材料にかかる熱伝
導面での改善によって加硫成形時間が短縮されるメリッ
トがあると共に、ゴム材料の使用量が低減され軽量化が
図られることとなり、ゴムクロ−ラのコストの低減効果
は大きい。According to the present invention, the structure of the rubber crawler is as described above. From the viewpoint of the manufacturing method, there is an advantage that the vulcanization molding time can be shortened by the improvement in the heat conduction surface of the rubber material. In addition, the amount of the rubber material used is reduced, the weight is reduced, and the effect of reducing the cost of the rubber crawler is great.
【図１】図１は本発明のゴムクロ−ラの第１実施例を示
す内周面の平面図である。FIG. 1 is a plan view of an inner peripheral surface showing a first embodiment of a rubber crawler according to the present invention.
【図２】図２は図１のゴムクロ−ラの外周面の平面図で
ある。FIG. 2 is a plan view of the outer peripheral surface of the rubber crawler of FIG.
【図３】図３は図１のゴムクロ−ラの側面図である。FIG. 3 is a side view of the rubber crawler of FIG. 1;
【図４】図４は図１におけるＡ−Ａ線での断面図であ
る。FIG. 4 is a sectional view taken along line AA in FIG. 1;
【図５】図５は図１におけるＢ−Ｂ線での断面図であ
る。FIG. 5 is a sectional view taken along line BB in FIG. 1;
【図６】図６は本発明のゴムクロ−ラの第２実施例を示
す断面図である。FIG. 6 is a sectional view showing a second embodiment of the rubber roller of the present invention.
【図７】図７は本発明のゴムクロ−ラの第３実施例を示
す断面図である。FIG. 7 is a sectional view showing a third embodiment of the rubber roller of the present invention.
【図８】図８はゴムクロ−ラを加硫成形する際に用いら
れるモ−ルドの断面図である。FIG. 8 is a sectional view of a mold used for vulcanizing and molding a rubber crawler.
１‥‥ゴムクロ−ラの基体をなす無端状のゴム弾性体、
２‥‥ゴム弾性体の内周面に設けられた角部、３‥‥ゴ
ム弾性体の外周側のゴムラグ、４‥‥ゴム弾性体中に埋
設された抗張体（スチ−ルコ−ド列）、５、５1 ‥‥角
部に向かって構成された窪み、１１‥‥上モ−ルド、１
２‥‥ゴムラグを形成する凹部、１３‥‥下モ−ルド１
４‥‥角部を形成する凹部、１５‥‥上下モ−ルドにて
形成されるキャビテイ、１６‥‥上モ−ルドに形成され
た膨突部、２１‥‥キャビテイ内に張設されたスチ−ル
コ−ド列。1) Endless rubber elastic body forming the base of rubber crawler,
2) corners provided on the inner peripheral surface of the rubber elastic body; 3) rubber lugs on the outer peripheral side of the rubber elastic body; 4) tensile members embedded in the rubber elastic body (a steel cord row) ) 5, 5 1窪 depression toward the corner, 11 ‥‥ upper mold, 1
2 ‥‥ recess forming rubber lug, 13 ‥‥ lower mold 1
A concave part forming a 4 ° corner, a cavity formed in a 15 ° vertical mold, a bulging part formed in a 16 ° upper mold, and a stee extending in a 21 ° cavity. -Record sequence.
Claims (3)
って、かつ、その幅方向の左右に振り分けて抗張体が埋
設され、その内周面側の幅方向中央にスプロケットとの
係合部となるゴム製角部と、外周面側にゴムラグと、が
形成されたゴムクロ−ラにあって、角部に対向して窪み
を形成し、該窪みが前記抗張体の埋設部位と同等或いは
これよりも内周側に達していることを特徴とするゴムク
ロ−ラの構造。A tension member is embedded in an endless rubber elastic body in the longitudinal direction and distributed to the left and right in the width direction, and an engagement with a sprocket is provided at the center of the inner peripheral surface in the width direction. In the rubber crawler in which the rubber corner portion to be the joint portion and the rubber lug on the outer peripheral surface side are formed, a recess is formed facing the corner portion, and the recess is formed with the embedded portion of the tensile member. The structure of the rubber crawler, which is equal to or reaches the inner peripheral side.
れ、抗張体の埋設部位と同等或いはこれよりも内周側に
達している請求項第１項記載のゴムクロ−ラの構造。2. The structure of a rubber roller according to claim 1, wherein the recess is formed on the outer peripheral side of the rubber crawler and reaches the inner peripheral side of the portion where the tensile member is buried.
記載のゴムクロ−ラの構造。3. The structure of claim 1, wherein the depression extends through the corner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12063893A JP3265550B2 (en) | 1993-04-22 | 1993-04-22 | Rubber Crawler Structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12063893A JP3265550B2 (en) | 1993-04-22 | 1993-04-22 | Rubber Crawler Structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06305460A JPH06305460A (en) | 1994-11-01 |
| JP3265550B2 true JP3265550B2 (en) | 2002-03-11 |
Family
ID=14791178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12063893A Expired - Lifetime JP3265550B2 (en) | 1993-04-22 | 1993-04-22 | Rubber Crawler Structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3265550B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1486405B1 (en) * | 2002-03-15 | 2008-06-11 | Fukuyama Gomu Kogyo Kabushiki Kaisha | Rubber crawler and crawler traveling equipment |
| JP4575095B2 (en) * | 2004-09-27 | 2010-11-04 | 株式会社ブリヂストン | Manufacturing method of rubber crawler |
| JP5750274B2 (en) * | 2011-02-15 | 2015-07-15 | 株式会社ブリヂストン | Rubber crawler |
-
1993
- 1993-04-22 JP JP12063893A patent/JP3265550B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06305460A (en) | 1994-11-01 |
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