JPS6121869B2 - - Google Patents
Info
- Publication number
- JPS6121869B2 JPS6121869B2 JP14267980A JP14267980A JPS6121869B2 JP S6121869 B2 JPS6121869 B2 JP S6121869B2 JP 14267980 A JP14267980 A JP 14267980A JP 14267980 A JP14267980 A JP 14267980A JP S6121869 B2 JPS6121869 B2 JP S6121869B2
- Authority
- JP
- Japan
- Prior art keywords
- idler
- annular body
- elastic annular
- groove
- segment
- 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
- 230000002093 peripheral effect Effects 0.000 description 5
- 239000002184 metal Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
Landscapes
- Tires In General (AREA)
- Motor Power Transmission Devices (AREA)
Description
【発明の詳細な説明】
本発明は装軌式車輌のアイドラまわりにおける
騒音低減装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a noise reduction device around an idler of a tracked vehicle.
従来、装軌式車輌のアイドラまわりにおける騒
音低減装置として、トラツクチエーンのトラツク
リンクとアイドラの第二踏面との間の直接係合に
よる金属打音を緩和させるために、第１図乃至第
４図に示すように、アイドラ２の第一踏面４に沿
つて環状の凹溝６を設けて該凹溝６内にセグメン
ト状の弾性環状体８を周設し、弾性環状体の各セ
グメントを周方向に適宜間隔を置いた複数位置で
アイドラの内方（第１図および第２図）、又はア
イドラ２の外方（第３図および第４図）よりアイ
ドラ外周壁にボルト１０止めし、弾性環状体８の
外周面にてトラツクチエーン１２のトラツクブツ
シユ１４を半径外方に押圧することによりトラツ
クリンク１６をアイドラの第二踏面１８より離間
させるようにした騒音低減装置は既に公知であ
る。 Conventionally, as a noise reduction device around an idler of a tracked vehicle, a device as shown in FIGS. As shown in FIG. 2, an annular groove 6 is provided along the first tread surface 4 of the idler 2, and a segment-shaped elastic annular body 8 is provided around the groove 6, and each segment of the elastic annular body is arranged in the circumferential direction. Bolts 10 are fastened to the outer peripheral wall of the idler from the inside of the idler (Figs. 1 and 2) or from the outside of the idler 2 (Figs. 3 and 4) at multiple positions appropriately spaced from each other. A noise reduction device is already known in which the truck link 16 is separated from the second tread surface 18 of the idler by pressing the truck bush 14 of the truck chain 12 radially outward with the outer peripheral surface of the body 8.
しかしながら、上記従来装置の中、弾性環状体
８をアイドラ内方よりボルト止めするタイプのも
のは、アイドラ２に弾性環状体を固定するにア
イドラ側壁２０の狭い孔２２を介してボルト１０
の取付作業をしなければならず取付作業が面倒で
あること、アイドラ外周壁に多数のボルト孔を
穿設するためにアイドラの強度低下が避けられな
いこと、弾性環状体８をボルト１０頭部又は先
端にて保持する取付構造となつているために取付
部が弱くこれをカバーすべく弾性環状体の裏面全
体に亘つて補強金属板２４を張設する必要がある
こと、および弾性環状体のトラツクブツシユと
の接触巾が狭いために接触面圧が大きく該環状体
の摩耗が激しい等の欠点がある。一方、従来装置
の中、弾性環状体をアイドラ外方よりボルト止め
するタイプのものは、上記，およびの欠点
に加え、弾性環状体の各セグメントの表面にボル
ト頭部収納用の複数の凹所２６を設ける必要があ
るために弾性環状体はブツシユとのくり返し接触
により該凹所２６より容易に破損し易い欠点を有
する。 However, among the above-mentioned conventional devices, the type in which the elastic annular body 8 is bolted from inside the idler is such that the elastic annular body 8 is fixed to the idler 2 by passing the bolt 10 through the narrow hole 22 of the idler side wall 20.
The installation work is troublesome as it requires a lot of work to install the idler, the strength of the idler inevitably decreases due to the need to drill a large number of bolt holes in the outer peripheral wall of the idler, and the elastic annular body 8 is attached to the head of the bolt 10. Or, since the attachment structure is such that the attachment is held at the tip, the attachment part is weak and it is necessary to stretch the reinforcing metal plate 24 over the entire back surface of the elastic annular body to cover this. Since the width of contact with the track bushing is narrow, the contact surface pressure is large, resulting in severe wear of the annular body. On the other hand, among conventional devices, the type in which the elastic annular body is bolted from the outside of the idler has, in addition to the above disadvantages, multiple recesses on the surface of each segment of the elastic annular body to accommodate the bolt head. Due to the necessity of providing the recess 26, the elastic annular body has the disadvantage that it is more easily damaged than the recess 26 due to repeated contact with the bush.
本発明は上記従来の欠点を除去すべくなされた
ものであつて、このため本発明は、装軌式車輌の
アイドラまわりにおける騒音低減装置であつて、
アイドラの第一踏面に沿つて環状の凹溝を設け、
該凹溝内にセグメント状の弾性環状体を周設し、
前記アイドラの凹溝両側壁および該凹溝内に嵌合
された弾性環状体の各セグメントの部分に周方向
に適宜間隔を置いてほゞアイドラ軸と平行に伸び
る貫通孔を形成し、該貫通孔内にアイドラ一側よ
りボルトを挿入することにより弾性環状体をアイ
ドラに固定し、前記弾性環状体は前記凹溝外にて
前記第一踏面上のほゞ全面に伸びる頭部を含み、
該頭部が第一踏面上に固着されており、前記弾性
環状体の各セグメントの部分に形成される貫通孔
が該セグメント部分に埋設された剛性管状部片に
より形成されており、該弾性環状体の外周面にて
トラツクブツシユを半径外方に押圧することによ
りトラツクリンクをアイドラの第二踏面より離間
せしめるようにしたことを特徴とする。 The present invention has been made to eliminate the above-mentioned conventional drawbacks, and for this reason, the present invention is a noise reduction device around an idler of a tracked vehicle, which includes:
An annular groove is provided along the first tread surface of the idler,
A segment-shaped elastic annular body is provided around the groove,
Through holes extending substantially parallel to the idler axis are formed at appropriate intervals in the circumferential direction on both side walls of the groove of the idler and in each segment of the elastic annular body fitted in the groove, and An elastic annular body is fixed to the idler by inserting a bolt into the hole from one side of the idler, the elastic annular body including a head extending over substantially the entire surface of the first tread surface outside the groove,
the head is fixed on the first tread surface, a through hole formed in each segment of the elastic annular body is formed by a rigid tubular piece embedded in the segment; It is characterized in that the track link is separated from the second tread surface of the idler by pressing the track link radially outward with the outer peripheral surface of the body.
以下本発明の内容を添附図に示した実施例に沿
つて説明するに、第５図および第６図は本発明の
好適な一実施例を示すもので、該実施例装置では
アイドラ２の第一踏面４中央に沿つて環状の凹溝
６を形成し、該凹溝６内にセグメント状の合成ゴ
ム等よりなる弾性環状体８を周設する。各弾性環
状体８は図示のように断面Ｔ字形をなし上記凹溝
６内に嵌入される脚部８ａと該凹溝６外にあつて
トラツクリンク１６のトラツクブツシユ１４と係
合する拡大頭部８ｂとを含む。該弾性環状体８の
高さは、図示のように弾性環状体の外周面が通常
トラツクブツシユ１４を半径外方に押圧してトラ
ツクリンク１６をアイドラの第二踏面１８より離
間せしめるような高さに選ばれる。弾性環状体８
の各セグメントの脚部８ａには周方向に適宜間隔
を明けた位置にアイドラ軸とほゞ平行に伸びる剛
性の管状部片２８が埋設固定されており、該管状
部片２８の管孔３０はアイドラ２の上記凹溝６両
側壁６２，３２に周方向に適宜間隔をおいて穿設
されたボルト孔３４，３４と整合してアイドラ一
側よりアイドラ他側に亘つてアイドラ軸とほゞ平
行に伸びる貫通孔を形成している。上記整合した
ボルト孔３４，３４と管孔３０にはボルト３６が
アイドラト一側より挿入され、アイドラ他側にて
該ボルト３６先端（螺部側）をナツト３８止めす
ることにより弾性環状体８がアイドラ２に固定さ
れている。なお、図中４０はボルト頭部およびナ
ツト３８を収容する座ぐり穴を示す。 The content of the present invention will be explained below with reference to an embodiment shown in the attached drawings. FIGS. 5 and 6 show a preferred embodiment of the present invention. An annular groove 6 is formed along the center of the tread surface 4, and a segment-shaped elastic annular body 8 made of synthetic rubber or the like is provided around the groove 6. Each elastic annular body 8 has a T-shaped cross section as shown, and has a leg portion 8a that is fitted into the groove 6 and an enlarged head portion 8b that is located outside the groove 6 and engages with the track bush 14 of the track link 16. including. The height of the elastic annular body 8 is such that the outer circumferential surface of the elastic annular body normally presses the truck bush 14 radially outwardly to separate the truck link 16 from the second tread surface 18 of the idler, as shown. To be elected. Elastic annular body 8
Rigid tubular pieces 28 extending substantially parallel to the idler axis are buried and fixed in the leg portions 8a of each segment at appropriate intervals in the circumferential direction, and the pipe holes 30 of the tubular pieces 28 are The groove 6 of the idler 2 is aligned with the bolt holes 34, 34 bored at appropriate intervals in the circumferential direction in both side walls 62, 32, and is approximately parallel to the idler axis from one side of the idler to the other side of the idler. A through-hole is formed that extends to . A bolt 36 is inserted into the aligned bolt holes 34, 34 and the tube hole 30 from one side of the idler, and the elastic annular body 8 is secured by fastening the tip (thread side) of the bolt 36 with a nut 38 on the other side of the idler. It is fixed to idler 2. In addition, 40 in the figure indicates a counterbore hole in which the bolt head and nut 38 are accommodated.
本発明装置においては、上記のように弾性環状
体８をアイドラ２に固定するに、弾性環状体８の
各セグメントに設けた管孔３０とアイドラ２のボ
ルト孔３４，３４とを整合した後該整合した孔内
にアイドラ側部よりボルト３６を挿入することに
より固定できるようにしたのでアイドラへの弾性
環状体の取付作業が容易となり、またアイドラ２
の外周壁にボルト取付孔を穿設することが無いか
らアイドラの強度を低下させることもない。ま
た、弾性環状体８内に剛性の管状部片２８を埋設
固定して該管状部片をボルト３６全体で保持する
ようにしたから取付部が強化され、従来のように
弾性環状体８の裏面全体に亘つて補強金属板を張
設する必要が無いから装置全体を簡単にすること
ができる。さらに、弾性環状体８の外周面にはボ
ルト収納用の凹所を設ける必要が無いからトラツ
クブツシユ１４とのくり返し接触により該凹所よ
り破損することもない。またさらに、図示のよう
に弾性環状体の断面形状をＴ字形となし、これに
よりトラツクブツシユ１４との接触巾Ｗを大きく
して接触面圧を小さくすることにより弾性環状体
の寿命を大巾に延長させることができる。なおこ
の場合、弾性環状体８の頭部８ｂと第一踏面４と
の間を通常の接着方法により固着して弾性環状体
８をアイドラ２により強固に固定することが望ま
しい。 In the device of the present invention, in order to fix the elastic annular body 8 to the idler 2 as described above, the tube holes 30 provided in each segment of the elastic annular body 8 are aligned with the bolt holes 34, 34 of the idler 2. Since the bolts 36 can be inserted into the aligned holes from the side of the idler to fix it, the work of attaching the elastic annular body to the idler is facilitated, and the idler 2
Since there is no need to drill bolt mounting holes in the outer peripheral wall of the idler, the strength of the idler is not reduced. In addition, since the rigid tubular piece 28 is buried and fixed in the elastic annular body 8 and the tubular piece is held by the entire bolt 36, the attachment part is strengthened, and the back side of the elastic annular body 8 is Since there is no need to extend a reinforcing metal plate over the entire device, the entire device can be simplified. Further, since there is no need to provide a recess for housing a bolt on the outer circumferential surface of the elastic annular body 8, there is no possibility of damage from the recess due to repeated contact with the track bushing 14. Furthermore, as shown in the figure, the cross-sectional shape of the elastic annular body is T-shaped, thereby increasing the contact width W with the track bushing 14 and reducing the contact surface pressure, thereby greatly extending the life of the elastic annular body. can be done. In this case, it is desirable to firmly fix the elastic annular body 8 to the idler 2 by fixing the head 8b of the elastic annular body 8 and the first tread surface 4 using a normal adhesive method.
以上のように本発明によればアイドラへの弾性
環状体の取付が容易であり、かつアイドラおよび
弾性環状体の強度および耐久性を向上させること
ができ、しかも構造簡単な装軌式車輌のアイドラ
まわりにおける騒音低減装置が得られる。 As described above, according to the present invention, the elastic annular body can be easily attached to the idler, the strength and durability of the idler and the elastic annular body can be improved, and the idler of a tracked vehicle has a simple structure. A surrounding noise reduction device is obtained.
なお本発明装置においてはアイドラまわりにト
ラツクチエーンを巻装したまゝ弾性環状体の取
付、取外しが可能である。 In addition, in the device of the present invention, it is possible to attach and detach the elastic annular body while the track chain is wound around the idler.
第１図は従来装置の部分的断面図、第２図は第
１図の−線に沿う断面図で一部省略せる図、
第３図は他の従来装置の部分的断面図、第４図は
第３図の−線に沿う断面図で一部省略せる
図。第５図は本発明装置の側面図、第６図は第５
図の−線に沿う断面図である。
２……アイドラ、４……第一踏面、６……凹
溝、８……弾性環状体、８ａ……脚部、８ｂ……
頭部、１４……トラツクブツシユ、１６……トラ
ツクリンク、１８……第二踏面、２８……管状部
片、３２……側壁、３４……ボルト孔、３６……
ボルト、３８……ナツト。
FIG. 1 is a partial cross-sectional view of a conventional device, and FIG. 2 is a cross-sectional view taken along the line - in FIG. 1, with some parts omitted.
FIG. 3 is a partial cross-sectional view of another conventional device, and FIG. 4 is a cross-sectional view taken along the line - in FIG. 3, with some parts omitted. Fig. 5 is a side view of the device of the present invention, and Fig. 6 is a side view of the device of the present invention.
It is a sectional view taken along the - line in the figure. 2... Idler, 4... First tread, 6... Concave groove, 8... Elastic annular body, 8a... Leg, 8b...
Head, 14... Track button, 16... Track link, 18... Second tread, 28... Tubular piece, 32... Side wall, 34... Bolt hole, 36...
Boruto, 38...Natsuto.
Claims (1)
減装置であつて、アイドラの第一踏面に沿つて環
状の凹溝を設け、該凹溝内にセグメント状の弾状
環状体を周設し、前記アイドラの凹溝両側壁およ
び該凹溝内に嵌合された弾性環状体の各セグメン
トの部分に周方向に適宜間隔を置いてほゞアイド
ラ軸と平行に伸びる貫通孔を形成し、該貫通孔内
にアイドラ一側よりボルトを挿入することにより
弾性環状体をアイドラに固定し、前記弾性環状体
は前記凹溝外にて前記第一踏面上のほゞ全面に伸
びる頭部を含み、該頭部が第一踏面上に固着され
ており、前記弾性環状体の各セグメントの部分に
形成される貫通孔が該セグメント部分に埋設され
た剛性管状部片により形成されており、該弾性環
状体の外周面にてトラツクブツシユを半径外方に
押圧することによりトラツクリンクをアイドラの
第二踏面より離間せしめるようにしたことを特徴
とする装軌式車輌のアイドラまわりにおける騒音
低減装置。1 A noise reduction device around an idler of a tracked vehicle, which includes an annular groove provided along the first tread surface of the idler, a segment-shaped elastic annular body disposed around the groove, and Through-holes extending approximately parallel to the idler axis are formed at appropriate intervals in the circumferential direction on both side walls of the groove and in each segment of the elastic annular body fitted in the groove, and a An elastic annular body is fixed to the idler by inserting a bolt from one side of the idler, and the elastic annular body includes a head that extends over substantially the entire surface of the first tread surface outside the groove, and is fixed on the first tread surface, a through hole formed in each segment of the elastic annular body is formed by a rigid tubular piece embedded in the segment, and the outer periphery of the elastic annular body is fixed to the first tread surface. A noise reduction device around an idler of a tracked vehicle, characterized in that the track link is separated from the second tread of the idler by pressing the track button radially outward with a surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14267980A JPS5766077A (en) | 1980-10-13 | 1980-10-13 | Reducer for noise around idler of crawler type vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14267980A JPS5766077A (en) | 1980-10-13 | 1980-10-13 | Reducer for noise around idler of crawler type vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5766077A JPS5766077A (en) | 1982-04-22 |
| JPS6121869B2 true JPS6121869B2 (en) | 1986-05-29 |
Family
ID=15320989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14267980A Granted JPS5766077A (en) | 1980-10-13 | 1980-10-13 | Reducer for noise around idler of crawler type vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5766077A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6631961B1 (en) * | 2001-08-27 | 2003-10-14 | Caterpillar Inc | Isolated rim idler |
| US8770677B2 (en) | 2010-12-21 | 2014-07-08 | Caterpillar Inc. | Compound rim assembly for idler in an undercarriage system of a track-type machine |
| US8770676B2 (en) | 2010-12-21 | 2014-07-08 | Caterpillar Inc. | Rotatable idler for undercarriage system in a track-type machine |
| US9902443B2 (en) * | 2014-04-16 | 2018-02-27 | Komatsu Ltd. | Idler wheel and crawler-type travel device |
-
1980
- 1980-10-13 JP JP14267980A patent/JPS5766077A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5766077A (en) | 1982-04-22 |
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