JP3349007B2 - Core metal for elastic crawler, method of manufacturing the same, and elastic crawler using the same - Google Patents
Core metal for elastic crawler, method of manufacturing the same, and elastic crawler using the sameInfo
- Publication number
- JP3349007B2 JP3349007B2 JP02701795A JP2701795A JP3349007B2 JP 3349007 B2 JP3349007 B2 JP 3349007B2 JP 02701795 A JP02701795 A JP 02701795A JP 2701795 A JP2701795 A JP 2701795A JP 3349007 B2 JP3349007 B2 JP 3349007B2
- Authority
- JP
- Japan
- Prior art keywords
- metal
- core
- elastic crawler
- crawler
- elastic
- 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
Description
【0001】[0001]
【産業上の利用分野】本発明は、農業、土木等に使用さ
れる弾性クローラの芯金、その製造方法及びそれを使用
した弾性クローラに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a core metal of an elastic crawler used for agriculture, civil engineering and the like, a method of manufacturing the same, and an elastic crawler using the same.
【0002】[0002]
【従来の技術】一般に、弾性クローラは、弾性材料製ク
ローラ本体に周方向間隔をおいて芯金を埋設すると共
に、芯金の外周側に周方向の抗張体を埋設し、前記芯金
間に駆動輪が係合する係合孔を形成し、クローラ本体の
外周面にラグを一体的に突出して構成されている。前記
芯金は駆動輪等の車輪が関与する中途部とその左右の翼
部とを有し、左右各翼部は中途部側から左右外端側へ次
第に上下肉厚が薄くなっており、前記中途部にクローラ
内周側へ左右一対の突起部を突出しており、この突起部
を設けていない芯金もある。2. Description of the Related Art Generally, an elastic crawler has a core metal embedded in a crawler body made of an elastic material at a circumferential interval and a tensile member in a circumferential direction embedded on an outer peripheral side of the core metal. The crawler body is formed with an engaging hole for engaging a drive wheel, and a lug is integrally protruded from the outer peripheral surface of the crawler body. The core metal has a halfway part in which wheels such as drive wheels are involved and wings on the left and right sides thereof, and each of the left and right wings is gradually thinner in the vertical direction from the halfway side to the left and right outer end sides, A pair of right and left protrusions protrude to the inner peripheral side of the crawler in the middle part, and there is also a metal core which is not provided with the protrusions.
【0003】このような芯金は鋳物又は鍛造物で形成さ
れていて、大重量物となっており、軽量化が望まれてお
り、特開平5−178243号公報には、突起部の内部
のみを空洞にした技術が開示されている。[0003] Such a core metal is formed by casting or forging, is heavy, and is desired to be reduced in weight. Japanese Unexamined Patent Publication (Kokai) No. 5-178243 discloses that only the inside of the projection is provided. Is disclosed.
【0004】[0004]
【発明が解決しようとする課題】前記従来技術では、突
起部の軽量化はできるが、その他の部分の軽量化はでき
ていなく、引き抜きによって形成できる形状及び材料に
限定されている。本発明は、芯金の中途部と翼部のうち
少なくとも翼部を中空にすることにより、芯金の軽量化
を図るようにした弾性クローラ用芯金を提供することを
目的とする。本発明は、金属製筒材を使用して、その両
端をプレス加工して翼部を形成することにより簡単かつ
安価に芯金を製造できるようにした弾性クローラ用芯金
の製造方法を提供することを目的とする。In the above prior art, the weight of the projection can be reduced, but the weight of the other portions cannot be reduced, and the shape and material that can be formed by drawing are limited. An object of the present invention is to provide a core metal for an elastic crawler in which at least a wing part among a middle part and a wing part of a core metal is made hollow to reduce the weight of the core metal. The present invention provides a method for manufacturing a metal core for an elastic crawler, which can easily and inexpensively manufacture a metal core by pressing both ends of a metal cylinder to form wings. The purpose is to:
【0005】本発明は、少なくとも翼部を中空にした芯
金を弾性材料製クローラ本体に周方向間隔をおいて埋設
することにより、軽量にした弾性クローラを提供するこ
とを目的とする。It is an object of the present invention to provide a lightweight elastic crawler by embedding a core metal having at least a hollow wing portion in a crawler body made of an elastic material at a circumferential interval.
【0006】[0006]
【課題を解決するための手段】本発明物における課題解
決のための第1の具体的手段は、弾性材料製クローラ本
体2に周方向間隔をおいて埋設されていて、駆動輪3等
の車輪が関与する中途部4とその左右の翼部5とを有す
る弾性クローラ用芯金において、前記中途部4及び左右
翼部5は少なくとも左右翼部5が筒体をプレス加工して
上下壁と前後壁とを有する内部中空に形成されているこ
とである。本発明物における課題解決のための第2の具
体的手段は、弾性材料製クローラ本体2に周方向間隔を
おいて埋設されていて、駆動輪3等の車輪が関与する中
途部4とその左右の翼部5とを有する弾性クローラ用芯
金において、 前記中途部4及び左右翼部5は少なくとも
左右翼部5が内部中空に形成されており、前記左右翼部
5は上下壁5A、5Bと前後壁5C、5Dとを有し、中
途部4から翼部5外端へいくに従って、上壁5Aが下壁
5Bに次第に近づくように傾斜され、前後壁5C、5D
は略平行でかつその上縁が次第に上壁5Aから上へ突出
されていることである。A first concrete means for solving the problem in the present invention is a wheel, such as a drive wheel 3, which is embedded in a crawler body 2 made of an elastic material at a circumferential interval. In the core metal for an elastic crawler having the halfway part 4 and the left and right wing parts 5 involved, the halfway part 4 and the left and right wing parts 5 are formed by pressing at least the left and right wing parts 5 into a cylindrical body.
That is, it is formed in an internal hollow having upper and lower walls and front and rear walls . A second specific means for solving the problem in the present invention is to provide a crawler body 2 made of an elastic material with a circumferential interval.
And is buried in the vehicle, and the wheels such as the drive wheel 3 are involved.
Elastic crawler core having an intermediate portion 4 and left and right wing portions 5
In the gold, the middle part 4 and the left and right wing parts 5 are at least
The left and right wings 5 are formed to be hollow inside, and the left and right wings 5 have upper and lower walls 5A and 5B and front and rear walls 5C and 5D. 5A is inclined so as to gradually approach the lower wall 5B, and the front and rear walls 5C, 5D
Are substantially parallel and the upper edge thereof gradually projects upward from the upper wall 5A.
【0007】本発明物における課題解決のための第3の
具体的手段は、弾性材料製クローラ本体2に周方向間隔
をおいて埋設されていて、駆動輪3等の車輪が関与する
中途部4とその左右の翼部5とを有する弾性クローラ用
芯金において、 前記中途部4及び左右翼部5は少なくと
も左右翼部5が内部中空に形成されており、前記左右翼
部5は上下壁5A、5Bと前後壁5C、5Dとを有し、
中途部4から翼部5外端へいくに従って、上壁5Aが下
壁5Bに次第に近づくように傾斜され、かつ上下壁5
A、5Bの前後幅が次第に広く形成されていることであ
る。A third concrete means for solving the problem in the present invention is to provide a crawler body 2 made of an elastic material with a circumferential gap.
And buried in it, involving wheels such as drive wheels 3
For an elastic crawler having a middle part 4 and left and right wing parts 5
In the metal core, the halfway portion 4 and the left and right wing portions 5 are at least
The left and right wings 5 are also formed to be hollow inside, and the left and right wings 5 have upper and lower walls 5A and 5B and front and rear walls 5C and 5D,
The upper wall 5A is inclined such that the upper wall 5A gradually approaches the lower wall 5B from the middle portion 4 to the outer end of the wing portion 5, and the upper and lower walls 5
A and 5B are that the front and rear widths are gradually widened.
【0008】本発明物における課題解決のための第4の
具体的手段は、第1〜3のいずれかの具体的手段に加え
て、前記左右翼部5は外端に内部と連通する孔6が形成
されていることである。本発明物における課題解決のた
めの第5の具体的手段は、第1〜4のいずれかの具体的
手段に加えて、前記左右翼部5の下壁5Bが略平坦にそ
れぞれ形成されていることである。本発明物における課
題解決のための第6の具体的手段は、第1〜5のいずれ
かの具体的手段に加えて、前記中途部4が内部中空でか
つ断面略楕円形又は下面が平坦な断面略半円形に形成さ
れていることである。A fourth concrete means for solving the problem in the present invention is that in addition to any one of the first to third concrete means, the left and right wing portions 5 have holes 6 communicating with the inside at the outer ends. Is formed. According to a fifth specific means for solving the problem in the present invention, in addition to any one of the first to fourth specific means, lower walls 5B of the left and right wing portions 5 are formed substantially flat. That is. A sixth specific means for solving the problem in the present invention is that, in addition to any one of the first to fifth specific means, the middle part 4 has a hollow inside and a substantially elliptical cross section or a flat lower surface. That is, it is formed in a substantially semicircular cross section.
【0009】本発明物における課題解決のための第7の
具体的手段は、第6の具体的手段に加えて、前記中途部
4はその内部に金属又は非金属製の補芯材7が挿入され
ていることである。本発明物における課題解決のための
第8の具体的手段は、第1〜7のいずれかの具体的手段
に加えて、前記中途部4の左右端部には上方に突出する
左右一対の突起部9が形成されており、この突起部9は
内部中空に形成されていることである。According to a seventh concrete means for solving the problem in the present invention, in addition to the sixth concrete means, the intermediate part 4 has a metal or non-metal auxiliary core material 7 inserted therein. That is being done. An eighth specific means for solving the problem in the present invention is a pair of left and right protrusions projecting upward at the left and right ends of the halfway part 4 in addition to any one of the first to seventh specific means. A projection 9 is formed, and the projection 9 is formed to be hollow inside.
【0010】本発明物における課題解決のための第9の
具体的手段は、第1〜8のいずれかの具体的手段に加え
て、前記中途部4と左右翼部5とが別個の部材に形成さ
れて互いに溶着されていることである。本発明物におけ
る課題解決のための第10の具体的手段は、第9又は1
0の具体的手段に加えて、前記中途部4は内部中空でか
つその内部を前後複数に区切るリブ8が形成されている
ことである。本発明物における課題解決のための第11
の具体的手段は、第9の具体的手段に加えて、前記中途
部4の左右端部には上方に突出する左右一対の突起部9
が一体形成されていることである。A ninth concrete means for solving the problem in the present invention is that, in addition to any one of the first to eighth concrete means, the midway portion 4 and the left and right wing portions 5 are formed as separate members. Formed and welded together. The tenth concrete means for solving the problem in the present invention is the ninth or the first means.
In addition to the specific means described above, the intermediate portion 4 is hollow inside and is formed with a rib 8 for dividing the inside into a plurality of front and rear portions. Eleventh solution to the problem of the present invention
A specific means is that, in addition to the ninth specific means, a pair of left and right protrusions 9 protruding upward is provided at the left and right ends of the intermediate portion 4.
Are integrally formed.
【0011】本発明方法における課題解決のための第1
の具体的手段は、金属製筒材を所要寸法に切断して筒素
材12に形成し、この筒素材12の中途部4を所要寸法
だけ残して、左右両側部を外端側へいくに従って薄くな
るようにプレス加工して翼部5を形成していることであ
る。本発明方法における課題解決のための第2の具体的
手段は、第1の具体的手段に加えて、前記左右両側部を
プレス加工する前に中途部4に補芯材7を挿入している
ことである。A first solution for solving the problem in the method of the present invention.
The concrete means is to cut a metal tubular material into required dimensions to form a tubular material 12, leave the middle part 4 of the tubular material 12 only in required dimensions, and make the left and right sides thinner toward the outer end side. That is, the wing portion 5 is formed by pressing. A second specific means for solving the problem in the method of the present invention is that, in addition to the first specific means, a reinforcing material 7 is inserted into the intermediate portion 4 before the left and right side portions are pressed. That is.
【0012】本発明方法における課題解決のための第3
の具体的手段は、第1又は2の具体的手段に加えて、金
属製薄板を2つ折りにして突起素材13を形成し、この
突起素材13を中途部4の左右両端に溶着して突起部9
を形成していることである。本発明方法における課題解
決のための第4の具体的手段は、金属材料で中途部材1
4を形成し、金属製筒材を一端から他端へいくに従って
薄くなるようにプレス加工して翼部材15を形成し、中
途部材14の両端に左右一対の翼部材15の厚肉側端部
を溶着していることである。A third solution to the problem in the method of the present invention.
The concrete means is that, in addition to the first or second concrete means, a metal thin plate is folded in two to form a projection material 13, and this projection material 13 is welded to the left and right ends of the intermediate portion 4 to form a projection portion. 9
Is formed. A fourth specific means for solving the problem in the method of the present invention is that the intermediate member 1 is made of a metal material.
4 and press-working the metal cylindrical member so as to become thinner from one end to the other end to form a wing member 15. Is welded.
【0013】本発明方法における課題解決のための第5
の具体的手段は、第4の具体的手段に加えて、前記金属
材料製中途部材14は、パイプ材、内部にリブを有する
引き抜き材、平板を曲げ加工した曲げ加工材、鍛造物又
は鋳物のいずれかで形成されていることである。本発明
利用物における課題解決のための具体的手段は、前記芯
金1が、弾性材料製クローラ本体2に周方向間隔をおい
て埋設され、その芯金1の外周側のクローラ本体2内に
左右一対の周方向の抗張体18が埋設され、この左右抗
張体18間でかつ芯金1間に駆動輪3が係合する係合孔
16が形成され、クローラ本体2の外周面の係合孔16
間にラグ17が一体成形されていることである。A fifth aspect of the present invention for solving the problem in the method.
The concrete means of the present invention is characterized in that, in addition to the fourth concrete means, the metal material intermediate member 14 is formed of a pipe material, a drawn material having a rib inside, a bent material obtained by bending a flat plate, a forged product or a cast product. It is formed of either. A specific means for solving the problem in the present invention is that the core 1 is embedded in the crawler main body 2 made of an elastic material at a circumferential interval, and is embedded in the crawler main body 2 on the outer peripheral side of the core 1. A pair of left and right circumferential tensile members 18 are buried, and an engagement hole 16 is formed between the left and right tensile members 18 and between the metal cores 1 to engage the drive wheel 3. Engagement hole 16
The lugs 17 are integrally formed therebetween.
【0014】[0014]
【作用】弾性材料製クローラ本体2に周方向間隔をおい
て埋設される芯金1は、中途部4及び左右翼部5のうち
少なくとも左右翼部5が内部中空に形成されていて、そ
の中空の体積分だけ重量が軽減され、中途部4も中空に
形成すると更に重量が軽減される。前記芯金1は、金属
製筒材を所要寸法に切断してその両側部を外端側へいく
に従って薄くなるようにプレス加工するだけで、内部中
空に形成される。The core metal 1 embedded in the crawler body 2 made of an elastic material at a circumferential interval has at least the left and right wing portions 5 of the middle portion 4 and the left and right wing portions 5 formed therein to be hollow. And the weight is further reduced by forming the middle part 4 to be hollow. The core metal 1 is formed hollow inside by simply cutting a metal cylindrical material to a required size and pressing both sides thereof so as to become thinner toward the outer end.
【0015】この芯金1を、弾性材料製クローラ本体2
に周方向間隔をおいて埋設して弾性クローラ20を形成
すると、弾性クローラ20内に中空部が残存し、全体重
量を軽減し、翼部5の前後壁5C、5Dの上縁が上壁5
Aより高く突出していたり、左右翼部5の外端に内部と
連通する孔6が形成されていたりすると、クローラ本体
2を形成する弾性材料が浸入して、芯金1とクローラ本
体2の結合強度を増加する。The cored bar 1 is made of a crawler body 2 made of an elastic material.
When the elastic crawler 20 is formed by embedding the elastic crawler 20 at circumferential intervals, a hollow portion remains in the elastic crawler 20 to reduce the overall weight, and the upper edges of the front and rear walls 5C and 5D of the wing portion 5
If the protruding portion A is higher than A, or if a hole 6 communicating with the inside is formed at the outer end of the left and right wing portions 5, the elastic material forming the crawler main body 2 penetrates and the core metal 1 and the crawler main body 2 are connected. Increase strength.
【0016】[0016]
【実施例】以下、本発明の実施例を図面に基づいて説明
する。図1〜5に示す第1実施例において、弾性クロー
ラ20はゴム、合成樹脂等の弾性材料で形成されたクロ
ーラ本体2内に、多数の芯金1Aを周方向等間隔に埋設
し、その芯金1A間の左右方向中途部に駆動輪3が係合
する係合孔16を形成し、この係合孔16の左右両側で
かつ芯金1Aの外周側に左右一対の周方向抗張体18を
埋設し、クローラ本体2の外周面の係合孔16間にラグ
17を一体成形している。Embodiments of the present invention will be described below with reference to the drawings. In the first embodiment shown in FIGS. 1 to 5, the elastic crawler 20 has a large number of cores 1A embedded in the crawler main body 2 formed at an equal interval in a circumferential direction in a crawler main body 2 formed of an elastic material such as rubber or synthetic resin. An engagement hole 16 with which the driving wheel 3 is engaged is formed in a middle portion in the left-right direction between the metal pieces 1A. And a lug 17 is integrally formed between the engaging holes 16 on the outer peripheral surface of the crawler body 2.
【0017】前記芯金1Aは鋼材、鉄材又はアルミ合金
等の軽金属で形成されており、係合孔16に対向して駆
動輪3が係合する部分を含む車輪が関与する中途部4
と、その左右の翼部5とを有し、中途部4はその両端か
らクローラ内周側に突出した左右突起部9を有してお
り、左右各翼部5は中途部4側から左右外端側へ次第に
上下肉厚が薄くなっている。中途部4の両端も翼部5に
連続するように薄くなっている。前記中途部4及び左右
翼部5は内部中空に形成されていて、中途部4の断面形
状は、図3に示すように、上下壁4A、4Bと前後壁4
C、4Dが総て円弧の横長の略楕円形状である。The metal core 1A is formed of a light metal such as steel, iron or aluminum alloy, and the intermediate portion 4 in which the wheel including the portion where the driving wheel 3 is engaged in opposition to the engagement hole 16 is involved.
And the left and right wings 5. The middle part 4 has left and right projections 9 protruding from both ends to the crawler inner peripheral side. The upper and lower walls are gradually thinner toward the end. Both ends of the intermediate portion 4 are also thin so as to be continuous with the wing portion 5. The middle part 4 and the left and right wing parts 5 are formed to be hollow inside, and the sectional shape of the middle part 4 is, as shown in FIG.
C and 4D are all horizontally long substantially elliptical arcs.
【0018】左右翼部5の側面形状は、図4に示すよう
に、下壁5Bが平坦で、中途部4から翼部5外端へいく
に従って、上壁5Aが下壁5Bに次第に近接して外端で
接触し、前後壁5C、5Dが略平行でかつその上縁が上
壁5Aより高くなるように突出されている。即ち、左右
翼部5は断面楕円パイプを前後幅を規制しながらプレス
で上壁5Aの前後中央を押し下げ、下壁5Bを平坦にす
ると共に前後壁5C、5Dを丸く形成したものであり、
翼部5の全長の前後幅は略均一になり、その前後丸み部
分の中央には芯金1A内の中空部分と連通する孔6が残
されている。As shown in FIG. 4, the side wall shape of the left and right wing portions 5 is such that the lower wall 5B is flat, and the upper wall 5A gradually approaches the lower wall 5B from the midway portion 4 to the outer end of the wing portion 5. The front and rear walls 5C and 5D are projected so that they are substantially parallel and the upper edge thereof is higher than the upper wall 5A. That is, the left and right wing portions 5 are formed by pressing down the front and rear centers of the upper wall 5A with a press while regulating the front and rear widths of the elliptical pipe in section, flattening the lower wall 5B, and forming the front and rear walls 5C and 5D round.
The front and rear width of the entire length of the wing portion 5 is substantially uniform, and a hole 6 communicating with the hollow portion in the cored bar 1A is left at the center of the front and rear rounded portion.
【0019】翼部5の前記孔6は、芯金1Aをクローラ
本体2内に埋設するときに、クローラ本体2の材料が侵
入することができ、芯金1Aとクローラ本体2の結合強
度を増加する役目をする。突起部9は、鋼板材、鉄板材
等の金属製薄板を打ち抜き、金型及びプレスを使って曲
げ加工及び2つ折り加工等の加工で角形状に形成し、芯
金1Aのその他の部分と別個に形成して、中途部4の左
右両端に溶着しており、その内部は中空となっていて、
溝10を介して外部に連通している。この溝10からも
クローラ本体2の材料が侵入することができる。The hole 6 of the wing portion 5 allows the material of the crawler body 2 to enter when the core bar 1A is buried in the crawler body 2, thereby increasing the bonding strength between the core bar 1A and the crawler body 2. Play a role. The protruding portion 9 is formed by punching a thin metal plate such as a steel plate or an iron plate, forming it into a square shape by using a mold and a press, such as bending and folding, and separately from other portions of the cored bar 1A. And is welded to the left and right ends of the middle part 4, and the inside is hollow,
It communicates with the outside through the groove 10. The material of the crawler body 2 can also enter from the groove 10.
【0020】前記芯金1Aの製造方法は、図5に示すよ
うに、断面略楕円形又は円形の金属製筒材を所要寸法に
切断して筒素材12に形成し(第1工程)、この筒素材
12を所要長さに3区分して中央区分を中途部4とし、
この中途部4を所要寸法だけ残して、筒素材12の左右
両側部を外端側へいくに従って薄くなるようにプレス加
工して翼部5を形成し(第2工程)、前記板材から2つ
折りにして角形状に突起素材13を形成(別工程)し、
この突起部9の突起素材13を中途部4の両端に溶着し
て突起部9を形成する(第3工程)。As shown in FIG. 5, in the method of manufacturing the cored bar 1A, a metal cylinder having a substantially elliptical or circular cross section is cut into required dimensions to form a cylinder material 12 (first step). The tube material 12 is divided into three sections of a required length, and the center section is defined as a middle section 4,
The wings 5 are formed by pressing the left and right sides of the tubular material 12 so as to become thinner toward the outer ends, leaving the intermediate portion 4 of a required size, and forming the wings 5 (second step), and folding the plate material into two. To form a projection material 13 in a square shape (another process),
The projection material 13 of the projection 9 is welded to both ends of the intermediate portion 4 to form the projection 9 (third step).
【0021】図6〜8に示す第2実施例において、この
芯金1Bは各部は総て中空になっており、前記芯金1A
と中途部4及び突起部9が同一で、翼部5の形状のみが
異なり、翼部5成形用金型を換えることにより、芯金1
Aと同様な方法で製造できる。左右翼部5は、下壁5B
が平坦で、中途部4から翼部5外端へいくに従って、上
壁5Aは下壁5Bに次第に近接するように傾斜し、かつ
上下壁5A、5Bの前後幅が次第に広く形成され、前後
壁5C、5Dは次第に低くなり、上壁5Aより高く出る
上縁は形成されていない。In the second embodiment shown in FIGS. 6 to 8, the core 1B is hollow at all parts.
And the intermediate portion 4 and the projection 9 are the same, and only the shape of the wing portion 5 is different.
It can be manufactured by the same method as A. Left and right wings 5 are lower wall 5B
Is flat, the upper wall 5A is inclined so as to gradually approach the lower wall 5B from the midway portion 4 to the outer end of the wing portion 5, and the front and rear widths of the upper and lower walls 5A and 5B are gradually widened. 5C and 5D gradually become lower, and the upper edge projecting higher than the upper wall 5A is not formed.
【0022】この芯金1Bは、前記筒素材12の両端を
接触するようにプレスで圧搾しただけであり、端部には
後加工で孔6が形成されている。図9、10に示す第3
実施例の芯金1Cは、芯金1Aと同一のものに、中途部
4内に金属又は非金属製の補芯材7を挿入したものであ
る。この補芯材7は合成樹脂等の軽量の材料が好まし
く、重量の増加を招くことなく中途部4の補強と成形時
の形状保持とをしている。この第3実施例の芯金1C
は、図5に2点鎖線で示すように、補芯材7を別途形成
しておいて、第1工程後に筒素材12の中央区分内に補
芯材7を挿入し、その状態で第2工程及び第3工程を実
施すれば製造できる。The core bar 1B is simply pressed by a press so that both ends of the cylindrical material 12 are in contact with each other, and a hole 6 is formed at an end portion by post-processing. The third shown in FIGS.
The core bar 1C of the embodiment is the same as the core bar 1A, and a metal or non-metal auxiliary core 7 is inserted into the intermediate portion 4. The core material 7 is preferably made of a lightweight material such as a synthetic resin, and reinforces the intermediate portion 4 and maintains the shape during molding without increasing the weight. The core bar 1C of the third embodiment
As shown by a two-dot chain line in FIG. 5, the auxiliary core material 7 is separately formed, and after the first step, the auxiliary core material 7 is inserted into the central section of the tubular material 12, and in this state, the second auxiliary material 7 is inserted. It can be manufactured by performing the steps and the third step.
【0023】前記各実施例で翼部5の下壁5Bは平坦に
形成されているが、中途部4の下壁4Bも略平坦に形成
することができ、その場合、補芯材7を挿入しておくと
成形が容易になる。そして、図11に示すように、上壁
4Aを円弧状にして、中途部4の断面形状を略半円形に
することも可能になる。前記円弧上壁4Aの曲率を駆動
輪3の歯谷形状に適合させておくと、駆動力伝達も円滑
にできるようになる。図12、13は第4実施例を示し
ており、この芯金1Dは中途部4と左右翼部5と左右突
起部9とを別個に形成して溶着固定したものである。In each of the above embodiments, the lower wall 5B of the wing portion 5 is formed flat, but the lower wall 4B of the intermediate portion 4 can also be formed substantially flat. If this is done, molding becomes easier. Then, as shown in FIG. 11, the upper wall 4A can be formed into an arc shape, and the cross-sectional shape of the intermediate portion 4 can be made substantially semicircular. If the curvature of the upper arc wall 4A is adapted to the tooth valley shape of the driving wheel 3, the driving force can be transmitted smoothly. 12 and 13 show a fourth embodiment, in which a metal core 1D is formed by separately forming an intermediate portion 4, a left and right wing portion 5, and a left and right protrusion 9 and fixing them by welding.
【0024】この芯金1Dの製造において、中途部4は
筒材をプレスで四角筒状中途部材14に形成し、翼部5
は第1又は第2実施例と同様に筒材かプレスで一端から
他端へいくに従って薄くなるようにプレス加工して翼部
材15に形成し、突起部9は板材を平面視十字状に溶着
して十字板16に形成し、中途部材15の四角筒の両端
に翼部材15を溶着し、中途部材15の両端に十字板1
6を溶着して製作されている。この第4実施例の中途部
4を形成する中途部材14には、筒材の代わりに、図1
4、15に示すように、内部を前後に2又は3の空洞に
区切るリブ8が形成された引き抜き材を使用したり、図
16、17に示すように、帯板を四角に曲げ加工して、
両縁を対向又は丸めた曲げ材を使用したりすることがで
きる。In the manufacture of the cored bar 1D, the intermediate portion 4 is formed by pressing a tubular member into a rectangular tubular intermediate member 14 and the wing portion 5 is formed.
Is formed on the wing member 15 by pressing with a cylindrical member or a press so as to become thinner from one end to the other end in the same manner as in the first or second embodiment. The wing member 15 is welded to both ends of the rectangular tube of the intermediate member 15, and the cross plate 1 is attached to both ends of the intermediate member 15.
6 is welded. The intermediate member 14 forming the intermediate portion 4 of the fourth embodiment is replaced with a tubular member, as shown in FIG.
As shown in FIGS. 4 and 15, a drawn material having ribs 8 for dividing the inside into two or three cavities in the front and rear may be used. Alternatively, as shown in FIGS. ,
For example, it is possible to use a bent material in which both edges are opposed or rounded.
【0025】図18は第5実施例を示しており、この芯
金1Eは中途部4と左右突起部9とが鍛造又は鋳造等で
一体成形されており、左右翼部5は第4実施例の芯金1
Dと同様に筒材等をプレス加工して形成されている。中
途部4の左右両端には突起22によってインローが形成
されており、翼部5を形成する部材を溶着する際の位置
決めをしている。この第5実施例の芯金1Eは、中途部
4及び突起部9の内部を中実に形成しているが、2点鎖
線で示すように、翼部5との接続部分で開放した内部中
空に形成することも可能である。FIG. 18 shows a fifth embodiment. This core 1E has a halfway portion 4 and a left and right projection 9 integrally formed by forging or casting, etc., and the left and right wing portions 5 are formed in the fourth embodiment. Core 1
Like D, it is formed by pressing a cylinder or the like. A spigot is formed on each of the left and right ends of the intermediate part 4 by a projection 22 to position the member forming the wing part 5 when welding. In the core metal 1E of the fifth embodiment, the inside of the halfway portion 4 and the projection 9 is formed solid, but as shown by the two-dot chain line, the inside of the hollow is opened at the connection portion with the wing portion 5. It is also possible to form.
【0026】前記第2〜5実施例の芯金1B〜1Eも、
芯金1Aと同様に、弾性材料製クローラ本体2に周方向
間隔をおいて埋設されて弾性クローラ20を構成するこ
とができる。前記各実施例の突起部9は、脱輪防止用の
ものを図示しているが、またぎ転輪を設けたクローラ装
置の場合は、芯金1の突起部9の頂面を平坦な転輪通過
面に形成して使用する。また、突起部9に前後に突出す
る小突起を一体形成して、弾性クローラ20を構成した
ときに、隣接する芯金1の小突起同士が周方向にオーバ
ラップするように配置し、この小突起で芯金1の左右方
向の振れ止めをさせても良い。更に、突起部9が不要な
クローラ装置の場合は、芯金1を中途部4と翼部5とだ
けで構成する。The cores 1B to 1E of the second to fifth embodiments are also
Like the cored bar 1A, the elastic crawler 20 can be configured by being embedded in the crawler body 2 made of an elastic material at a circumferential interval. Although the protrusion 9 in each of the above embodiments is shown for preventing wheel removal, in the case of a crawler device provided with a straddling wheel, the top surface of the protrusion 9 of the cored bar 1 is flat. Used by forming on the passage surface. In addition, when the elastic crawler 20 is formed by integrally forming small protrusions projecting back and forth on the protrusions 9, the small protrusions of the adjacent metal cores 1 are arranged so as to overlap in the circumferential direction. The protrusion of the cored bar 1 may be prevented from swinging in the left-right direction. Further, in the case of a crawler device that does not require the projection 9, the cored bar 1 is composed of only the halfway portion 4 and the wing portion 5.
【0027】[0027]
【発明の効果】以上詳述した本発明によれば、芯金1の
中途部4及び左右翼部5は少なくとも左右翼部5が筒体
をプレス加工して上下壁と前後壁とを有する内部中空に
形成されているので、その中空の体積分だけ重量を軽減
することができ、軽量化及びコスト低下を図ることがで
きる。前記左右翼部5は上下壁5A、5Bと前後壁5
C、5Dとを有し、中途部4から翼部5外端へいくに従
って、上壁5Aが下壁5Bに次第に近づくように傾斜さ
れ、前後壁5C、5Dは略平行でかつその上縁が次第に
上壁5Aから上へ突出されているので、翼部5の前後幅
を全長略均一にでき、翼部5の剛性を高くでき、かつク
ローラ本体2に埋設したときに、前後壁5C、5Dがク
ローラ本体2と引っ掛かりを生じて結合をより確実にで
きる。According to the present invention described in detail above, at least the middle part 4 and the left and right wing parts 5 of the cored bar 1 are cylindrical bodies.
Is pressed to form an inner hollow having upper and lower walls and front and rear walls, so that the weight can be reduced by the volume of the hollow, and the weight and cost can be reduced. The left and right wings 5 are composed of upper and lower walls 5A and 5B and front and rear walls 5
C, 5D, and the upper wall 5A is inclined so as to gradually approach the lower wall 5B from the midway portion 4 to the outer end of the wing portion 5, and the front and rear walls 5C, 5D are substantially parallel and the upper edges thereof are formed. Since it is gradually projected upward from the upper wall 5A, the front-rear width of the wing portion 5 can be made substantially uniform over its entire length, the stiffness of the wing portion 5 can be increased, and when the wing portion 5 is embedded in the crawler body 2, the front-rear wall 5C, 5D Are caught by the crawler body 2 and the connection can be more reliably performed.
【0028】前記左右翼部5は上下壁5A、5Bと前後
壁5C、5Dとを有し、中途部4から翼部5外端へいく
に従って、上壁5Aが下壁5Bに次第に近づくように傾
斜され、かつ上下壁5A、5Bの前後幅が次第に広く形
成されているので、翼部5の外端における肉厚を薄くで
き、かつクローラ本体2に埋設したときに、翼部5上の
クローラ本体2の肉厚も薄くできる。前記左右翼部5は
外端に内部と連通する孔6が形成されているので、クロ
ーラ本体2に埋設したときに、クローラ本体2の弾性材
料が侵入でき、芯金1とクローラ本体2の結合強度を向
上できる。The left and right wings 5 have upper and lower walls 5A and 5B and front and rear walls 5C and 5D. The upper wall 5A gradually approaches the lower wall 5B from the middle 4 to the outer end of the wing 5. Since it is inclined and the front and rear widths of the upper and lower walls 5A and 5B are gradually widened, the thickness at the outer end of the wing portion 5 can be reduced, and the crawler on the wing portion 5 when embedded in the crawler body 2 The thickness of the main body 2 can be reduced. Since the left and right wings 5 are formed with holes 6 communicating with the inside at the outer ends, the elastic material of the crawler main body 2 can enter when embedded in the crawler main body 2, and the core metal 1 and the crawler main body 2 can be connected. Strength can be improved.
【0029】前記左右翼部5の下壁5Bが略平坦にそれ
ぞれ形成されているので、クローラ本体2に埋設してそ
の外周側に抗張体18を配置したときに、芯金1から抗
張体18に与える応力を低下させることができ、抗張体
18の耐久性を向上できる。前記中途部4が内部中空で
かつ断面略楕円形又は下面が平坦な断面略半円形に形成
されているので、駆動輪3に係合したときに、駆動輪3
の歯の谷と円滑に係合することができる。前記中途部4
はその内部に金属又は非金属製の補芯材7が挿入されて
いるので、中途部4の強度を向上でき、かつ翼部5を成
形する際に保形することができる。Since the lower walls 5B of the left and right wing portions 5 are formed substantially flat, when the tensile member 18 is buried in the crawler body 2 and the tensile member 18 is arranged on the outer peripheral side thereof, the tensile force from the metal core 1 is reduced. The stress applied to the body 18 can be reduced, and the durability of the tensile body 18 can be improved. Since the intermediate portion 4 is hollow inside and has a substantially elliptical cross section or a substantially semicircular cross section with a flat lower surface, the driving wheel 3
Can smoothly engage with the tooth valley. Midway 4
Since the metal or non-metal auxiliary core material 7 is inserted in the inside, the strength of the halfway portion 4 can be improved, and the shape can be maintained when the wing portion 5 is formed.
【0030】前記中途部4の左右端部には上方に突出す
る左右一対の突起部9が形成されており、この突起部9
は内部中空に形成されているので、芯金1の重量を更に
軽減することができる。前記中途部4と左右翼部5とが
別個の部材に形成されて互いに溶着されているので、中
途部4を筒形状だけでなく、種々の形状に形成できる。
前記中途部4は内部中空でかつその内部を前後複数に区
切るリブ8が形成されているので、中途部4を軽量及び
高強度に形成できる。A pair of left and right protrusions 9 projecting upward is formed at the left and right ends of the intermediate part 4.
Is formed hollow inside, so that the weight of the cored bar 1 can be further reduced. Since the halfway portion 4 and the left and right wing portions 5 are formed as separate members and welded to each other, the halfway portion 4 can be formed into various shapes in addition to the cylindrical shape.
Since the middle portion 4 is hollow inside and is formed with a rib 8 for dividing the inside into a plurality of front and rear portions, the middle portion 4 can be formed with a light weight and high strength.
【0031】前記中途部4の左右端部には上方に突出す
る左右一対の突起部9が一体形成されているので、突起
部9の形成が簡単になる。金属製筒材を所要寸法に切断
して筒素材12に形成し、この筒素材12の中途部4を
所要寸法だけ残して、左右両側部を外端側へいくに従っ
て薄くなるようにプレス加工して翼部5を形成している
ので、芯金1が筒材から簡単かつ軽量に形成できる。前
記左右両側部をプレス加工する前に中途部4に補芯材7
を挿入しているので、補芯材7の挿入及びそれを用いた
成形が簡単にできる。The left and right ends of the intermediate portion 4 are integrally formed with a pair of left and right projections 9 projecting upward, so that the formation of the projections 9 is simplified. A metal cylinder material is cut into required dimensions to form a cylinder material 12, and left and right sides of the cylinder material 12 are pressed so that the left and right sides become thinner toward the outer ends, leaving only the required dimensions. Since the wing portion 5 is formed, the cored bar 1 can be formed easily and lightly from a cylindrical material. Before pressing the left and right side portions, a reinforcing material 7
Is inserted, the insertion of the auxiliary core material 7 and the molding using the same can be easily performed.
【0032】金属製薄板を2つ折りにして突起素材13
を形成し、この突起素材13を中途部4の左右両端に溶
着して突起部9を形成しているので、突起部9が簡単か
つ軽量に形成できる。金属材料で中途部材14を形成
し、金属製筒材を一端から他端へいくに従って薄くなる
ようにプレス加工して翼部材15を形成し、中途部材1
4の両端に左右一対の翼部材15の厚肉側端部を溶着し
ているので、種々の形状の中途部4を有する芯金1を簡
単に製造できる。A metal thin plate is folded in two to form a projection material 13.
Is formed, and the projection material 13 is welded to the left and right ends of the intermediate portion 4 to form the projection 9, so that the projection 9 can be formed easily and lightly. The intermediate member 14 is formed of a metal material, and the metal tubular member is pressed so as to become thinner from one end to the other end to form the wing member 15, and the intermediate member 1 is formed.
Since the thicker ends of the pair of left and right wing members 15 are welded to both ends of the core 4, the metal core 1 having the intermediate portions 4 of various shapes can be easily manufactured.
【0033】前記金属材料製中途部材14は、パイプ
材、内部にリブを有する引き抜き材、平板を曲げ加工し
た曲げ加工材、鍛造物又は鋳物のいずれかで形成されて
いるので、中途部4を種々の材料及び形状に形成でき、
要求される強度のものを簡単に製作できる。弾性クロー
ラは、前記いずれにかの芯金1が弾性材料製クローラ本
体2に周方向間隔をおいて埋設され、その芯金1の外周
側のクローラ本体2内に左右一対の周方向の抗張体18
が埋設され、この左右抗張体18間でかつ芯金1間に駆
動輪3が係合する係合孔16が形成され、クローラ本体
2の外周面の係合孔16間にラグ17が一体成形されて
いるので、軽量かつ安価に製作できる。The intermediate member 14 made of a metal material is formed of any one of a pipe material, a drawn material having a rib inside, a bent material obtained by bending a flat plate, a forged product, or a cast product. It can be formed into various materials and shapes,
The required strength can be easily manufactured. The elastic crawler has one of the cores 1 embedded in the crawler body 2 made of an elastic material at a circumferential interval, and a pair of left and right circumferential tensile strengths is provided in the crawler body 2 on the outer peripheral side of the core 1. Body 18
An engaging hole 16 is formed between the left and right tensile members 18 and between the metal cores 1 so that the driving wheel 3 is engaged. A lug 17 is integrally formed between the engaging holes 16 on the outer peripheral surface of the crawler body 2. Because it is molded, it can be manufactured lightweight and inexpensively.
【図1】本発明の第1実施例の芯金を埋設した弾性クロ
ーラの断面正面図である。FIG. 1 is a cross-sectional front view of an elastic crawler having a core bar embedded therein according to a first embodiment of the present invention.
【図2】同平面図である。FIG. 2 is a plan view of the same.
【図3】第1実施例の芯金の断面側面図である。FIG. 3 is a sectional side view of the metal core of the first embodiment.
【図4】第1実施例の芯金の側面図である。FIG. 4 is a side view of the metal core of the first embodiment.
【図5】第1実施例の芯金の製造方法を示す説明図であ
る。FIG. 5 is an explanatory view showing a method for manufacturing the cored bar of the first embodiment.
【図6】第2実施例の芯金を示す正面図である。FIG. 6 is a front view showing a metal core of the second embodiment.
【図7】同平面図である。FIG. 7 is a plan view of the same.
【図8】同側面図である。FIG. 8 is a side view of the same.
【図9】第3実施例の芯金を示す断面正面図である。FIG. 9 is a sectional front view showing a cored bar according to a third embodiment.
【図10】同断面側面図である。FIG. 10 is a sectional side view of the same.
【図11】第3実施例の芯金の変形例を示す断面側面図
である。FIG. 11 is a sectional side view showing a modified example of the cored bar of the third embodiment.
【図12】第4実施例の芯金を示す正面図である。FIG. 12 is a front view showing a cored bar according to a fourth embodiment.
【図13】同平面図である。FIG. 13 is a plan view of the same.
【図14】第4実施例の芯金の中途部材の第1変形例を
示す断面図である。FIG. 14 is a sectional view showing a first modification of the intermediate member of the core bar of the fourth embodiment.
【図15】第4実施例の芯金の中途部材の第2変形例を
示す断面図である。FIG. 15 is a sectional view showing a second modification of the intermediate member of the core bar of the fourth embodiment.
【図16】第4実施例の芯金の中途部材の第3変形例を
示す断面図である。FIG. 16 is a sectional view showing a third modification of the intermediate member of the core bar of the fourth embodiment.
【図17】第4実施例の芯金の中途部材の第4変形例を
示す断面図である。FIG. 17 is a sectional view showing a fourth modification of the intermediate member of the core bar of the fourth embodiment.
【図18】第5実施例の芯金を示す断面正面図である。FIG. 18 is a sectional front view showing a cored bar according to a fifth embodiment.
1 芯金 2 クローラ本体 3 駆動輪 4 中途部 5 翼部 6 孔 7 補芯材 8 リブ 9 突起部 DESCRIPTION OF SYMBOLS 1 Core metal 2 Crawler main body 3 Drive wheel 4 Midway part 5 Wing part 6 Hole 7 Compensating material 8 Rib 9 Projection
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7,DB名) B62D 55/24 B62D 55/253 ──────────────────────────────────────────────────の Continued on front page (58) Field surveyed (Int.Cl. 7 , DB name) B62D 55/24 B62D 55/253
Claims (17)
間隔をおいて埋設されていて、駆動輪(3)等の車輪が
関与する中途部(4)とその左右の翼部(5)とを有す
る弾性クローラ用芯金において、 前記中途部(4)及び左右翼部(5)は少なくとも左右
翼部(5)が筒体をプレス加工して上下壁と前後壁とを
有する内部中空に形成されていることを特徴とする弾性
クローラ用芯金。An intermediate part (4) which is embedded in a crawler body (2) made of an elastic material at a circumferential interval and includes wheels such as a drive wheel (3) and wings (5) on the left and right sides thereof. In the core for elastic crawlers having the following, at least the middle part (4) and the left and right wing parts (5) are formed by pressing a cylindrical body at least in the left and right wing parts (5) to form upper and lower walls and front and rear walls.
A core metal for an elastic crawler, wherein the metal core is formed in a hollow inside.
間隔をおいて埋設されていて、駆動輪(3)等の車輪が
関与する中途部(4)とその左右の翼部(5)とを有す
る弾性クローラ用芯金において、 前記中途部(4)及び左右翼部(5)は少なくとも左右
翼部(5)が内部中空に形成されており、 前記左右翼部(5)は上下壁(5A、5B)と前後壁
(5C、5D)とを有し、中途部(4)から翼部(5)
外端へいくに従って、上壁(5A)が下壁(5B)に次
第に近づくように傾斜され、前後壁(5C、5D)は略
平行でかつその上縁が次第に上壁(5A)から上へ突出
されていることを特徴とする弾性クローラ用芯金。2. A crawler body (2) made of an elastic material has a circumferential direction.
It is buried at intervals, and wheels such as drive wheels (3)
It has an involved midway (4) and its left and right wings (5)
The middle part (4) and the left and right wing parts (5) are at least left and right.
The wing part (5) is formed hollow inside, and the left and right wing parts (5) have upper and lower walls (5A, 5B) and front and rear walls (5C, 5D), and extend from the middle part (4) to the wing part. (5)
As going to the outer end, the upper wall (5A) is inclined so as to gradually approach the lower wall (5B), and the front and rear walls (5C, 5D) are substantially parallel and the upper edges thereof gradually rise from the upper wall (5A). elastic crawler core metal characterized by being projected.
間隔をおいて埋設されていて、駆動輪(3)等の車輪が
関与する中途部(4)とその左右の翼部(5)とを有す
る弾性クローラ用芯金において、 前記中途部(4)及び左右翼部(5)は少なくとも左右
翼部(5)が内部中空に形成されており、 前記左右翼部(5)は上下壁(5A、5B)と前後壁
(5C、5D)とを有し、中途部(4)から翼部(5)
外端へいくに従って、上壁(5A)が下壁(5B)に次
第に近づくように傾斜され、かつ上下壁(5A、5B)
の前後幅が次第に広く形成されていることを特徴とする
弾性クローラ用芯金。3. A crawler body (2) made of an elastic material has a circumferential direction.
It is buried at intervals, and wheels such as drive wheels (3)
It has an involved midway (4) and its left and right wings (5)
The middle part (4) and the left and right wing parts (5) are at least left and right.
The wing part (5) is formed hollow inside, and the left and right wing parts (5) have upper and lower walls (5A, 5B) and front and rear walls (5C, 5D), and extend from the middle part (4) to the wing part. (5)
As going to the outer end, the upper wall (5A) is inclined so as to gradually approach the lower wall (5B), and the upper and lower walls (5A, 5B)
You characterized in that the longitudinal width of the are progressively wider
Elastic crawler for the metal core.
する孔(6)が形成されていることを特徴とする請求項
1〜3のいずれかに記載の弾性クローラ用芯金。4. A core metal for an elastic crawler according to claim 1, wherein said left and right wing portions (5) are formed with holes (6) communicating with the inside at the outer ends. .
平坦に形成されていることを特徴とする請求項1〜4の
いずれかに記載の弾性クローラ用芯金。5. The method according to claim 1, wherein the lower wall (5B) of the left and right wing portions (5) is formed substantially flat .
The core metal for an elastic crawler according to any one of the above.
略楕円形又は下面が平坦な断面略半円形に形成にされて
いることを特徴とする請求項1〜5のいずれかに記載の
弾性クローラ用芯金。6. according to any one of claims 1 to 5, characterized in that said intermediate portion (4) is hollow at and cross section elliptical or lower surface is formed into a flat cross section semi-circular Core for elastic crawler.
非金属製の補芯材(7)が挿入されていることを特徴と
する請求項1〜6のいずれかに記載の弾性クローラ用芯
金。7. The elastic crawler according to claim 1, wherein the intermediate part (4) has a metal or non-metal auxiliary member (7) inserted therein. Core metal.
突出する左右一対の突起部(9)が形成されており、こ
の突起部(9)は内部中空に形成されていることを特徴
とする請求項1〜7のいずれかに記載の弾性クローラ用
芯金。8. A pair of left and right protrusions (9) protruding upward are formed at the left and right ends of the intermediate part (4), and the protrusions (9) are formed hollow inside. The core metal for an elastic crawler according to any one of claims 1 to 7 , characterized in that:
別個の部材に形成されて互いに溶着されていることを特
徴とする請求項1〜8のいずれかに記載の弾性クローラ
用芯金。9. The elastic crawler according to claim 1, wherein the middle part (4) and the left and right wing parts (5) are formed as separate members and welded to each other. Core metal.
の内部を前後複数に区切るリブ(8)が形成されている
ことを特徴とする請求項9に記載の弾性クローラ用芯
金。10. The elastic crawler core according to claim 9, wherein the middle part (4) is hollow inside and is formed with a rib (8) dividing the inside into a plurality of front and rear parts.
に突出する左右一対の突起部(9)が一体形成されてい
ることを特徴とする請求項9又は10に記載の弾性クロ
ーラ用芯金。11. the elastic crawler according to claim 9 or 10, characterized in that said intermediate portion (4) pair of right and left projecting portions in the right and left end portions projecting above the (9) is integrally formed Core metal.
材(12)に形成し、この筒素材(12)の中途部
(4)を所要寸法だけ残して、左右両側部を外端側へい
くに従って薄くなるようにプレス加工して翼部(5)を
形成していることを特徴とする弾性クローラ用芯金の製
造方法。12. A metal cylinder material is cut into a required size to form a cylinder material (12), and left and right sides of the cylinder material (12) are outer ends while leaving a middle portion (4) of a required size. A method for producing a core metal for an elastic crawler, characterized in that a wing (5) is formed by press working so as to become thinner toward the side.
中途部(4)に補芯材(7)を挿入していることを特徴
とする請求項12に記載の弾性クローラ用芯金の製造方
法。13. The manufacturing of a core metal for an elastic crawler according to claim 12, wherein a core material (7) is inserted into the intermediate portion (4) before the left and right side portions are pressed. Method.
(13)を形成し、この突起素材(13)を中途部
(4)の左右両端に溶着して突起部(9)を形成してい
ることを特徴とする請求項12又は13に記載の弾性ク
ローラ用芯金の製造方法。14. A projection material (13) is formed by folding a thin metal plate into two parts, and this projection material (13) is welded to the left and right ends of the middle part (4) to form a projection part (9). The method for manufacturing a core metal for an elastic crawler according to claim 12 or 13 , wherein
し、金属製筒材を一端から他端へいくに従って薄くなる
ようにプレス加工して翼部材(15)を形成し、中途部
材(14)の両端に左右一対の翼部材(15)の厚肉側
端部を溶着していることを特徴とする弾性クローラ用芯
金の製造方法。15. An intermediate member (14) is formed from a metal material, and a metal tubular member is pressed so as to become thinner from one end to the other end to form a wing member (15). ), The thick-walled ends of the pair of left and right wing members (15) are welded to both ends of the core metal for an elastic crawler.
パイプ材、内部にリブ(8)を有する引き抜き材、平板
を曲げ加工した曲げ加工材、鍛造物又は鋳物のいずれか
で形成されていることを特徴とする請求項15に記載の
弾性クローラ用芯金の製造方法。16. The intermediate member (14) made of a metal material,
The elastic crawler core according to claim 15, wherein the core is formed of any one of a pipe material, a drawn material having a rib (8) therein, a bent material obtained by bending a flat plate, a forging or a casting. Gold manufacturing method.
の芯金(1)が、弾性材料製クローラ本体(2)に周方
向間隔をおいて埋設され、その芯金(1)の外周側のク
ローラ本体(2)内に左右一対の周方向の抗張体(1
8)が埋設され、この左右抗張体(18)間でかつ芯金
(1)間に駆動輪(3)が係合する係合孔(16)が形
成され、クローラ本体(2)の外周面の係合孔(16)
間にラグ(17)が一体成形されていることを特徴とす
る弾性クローラ。17. The core metal (1) according to any one of claims 1 to 11, embedded in a crawler body (2) made of an elastic material at a circumferential interval, and an outer periphery of the core metal (1). A pair of left and right circumferential tension members (1
8) is buried, an engagement hole (16) is formed between the left and right tension members (18) and between the metal cores (1) to engage the drive wheel (3), and the outer periphery of the crawler body (2) is formed. Surface engagement hole (16)
An elastic crawler, characterized in that a lug (17) is integrally formed therebetween.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP02701795A JP3349007B2 (en) | 1995-02-15 | 1995-02-15 | Core metal for elastic crawler, method of manufacturing the same, and elastic crawler using the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP02701795A JP3349007B2 (en) | 1995-02-15 | 1995-02-15 | Core metal for elastic crawler, method of manufacturing the same, and elastic crawler using the same |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH08216942A JPH08216942A (en) | 1996-08-27 |
JP3349007B2 true JP3349007B2 (en) | 2002-11-20 |
Family
ID=12209331
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP02701795A Expired - Fee Related JP3349007B2 (en) | 1995-02-15 | 1995-02-15 | Core metal for elastic crawler, method of manufacturing the same, and elastic crawler using the same |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3349007B2 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006193063A (en) * | 2005-01-14 | 2006-07-27 | Sumitomo Rubber Ind Ltd | Elastic crawler |
JP5348992B2 (en) * | 2008-10-08 | 2013-11-20 | 住友ゴム工業株式会社 | Elastic track |
JP5624750B2 (en) * | 2009-11-16 | 2014-11-12 | 株式会社ブリヂストン | Rubber crawler |
JP5520576B2 (en) * | 2009-11-16 | 2014-06-11 | 株式会社ブリヂストン | Rubber crawler |
-
1995
- 1995-02-15 JP JP02701795A patent/JP3349007B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH08216942A (en) | 1996-08-27 |
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