JPS6121867B2 - - Google Patents
Info
- Publication number
- JPS6121867B2 JPS6121867B2 JP14267780A JP14267780A JPS6121867B2 JP S6121867 B2 JPS6121867 B2 JP S6121867B2 JP 14267780 A JP14267780 A JP 14267780A JP 14267780 A JP14267780 A JP 14267780A JP S6121867 B2 JPS6121867 B2 JP S6121867B2
- Authority
- JP
- Japan
- Prior art keywords
- idler
- annular body
- elastic annular
- protrusion
- tread
- 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 claims description 5
- 239000002184 metal Substances 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
Landscapes
- Motor Power Transmission Devices (AREA)
- Tires In General (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２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
イドラの外周壁にボルト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 fixed to the outer peripheral wall of the idler from the inside of the idler 2 (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 outer circumferential surface of the elastic annular body 8 presses the truck bush 14 of the truck chain 12 radially outward, thereby separating the truck link 16 from the second tread surface 18 of the idler.
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、および弾性環状体のトラツクブツシユ１
４との接触巾が狭いために接触面圧が大きく環状
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，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, the medium elastic annular body 8 of the conventional device
In the case of the type in which the idler is bolted from inside the idler, the bolt 10 must be installed through a narrow hole 22 in the idler side wall 20 in order to fix the elastic annular body to the idler 2, making the installation work troublesome. In addition, the strength of the idler is unavoidably reduced due to the provision of numerous bolt holes in the outer peripheral wall of the idler, and the track bushing 1 of the elastic annular body is
Since the contact width with 4 is narrow, the contact surface pressure is large and there are disadvantages such as severe wear of the annular body. On the other hand, the conventional device in which the medium-elastic annular body is bolted from the outside of the idler has the following disadvantages:
Since it is necessary to provide a plurality of recesses 26 on the surface of each segment of the elastic annular body for accommodating bolt heads, the elastic annular body has the disadvantage that it is more easily damaged than the recesses 26 due to repeated contact with the bushing. .
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、
該アイドラの第一踏面を形成する中央凸部を跨い
で両側に突条を有するセグメント状の弾性環状体
を該第一踏面に沿つて周設し、該アイドラの中央
凸部および該凸部両側に位置する弾性環状体の各
突条に周方向に適宜間隔を置いてほぼアイドラ軸
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
記第一踏面上のほぼ全面上に伸びる本体部を含
み、該本体部が第一踏面上に固着されており、前
記弾性環状体の各突条に形成される貫通孔は該突
条内に埋設された剛性管状部片により形成されて
おり、前記弾性環状体の両側部に前記本体部より
突条に亘つて補強金属板が一体に固着されてお
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:
A segment-shaped elastic annular body having protrusions on both sides is provided along the first tread, straddling the central convex part forming the first tread surface of the idler, and the central convex part of the idler and both sides of the convex part are provided along the first tread surface. By forming through holes extending substantially parallel to the idler axis at appropriate intervals in the circumferential direction on each protrusion of the elastic annular body located at is fixed to the idler, the elastic annular body includes a main body extending over substantially the entire surface of the first tread, the main body is fixed on the first tread, and each protrusion of the elastic annular body has a main body extending over substantially the entire surface of the first tread. The formed through hole is formed by a rigid tubular piece embedded in the ridge, and reinforcing metal plates are integrally fixed to both sides of the elastic annular body from the main body part to the ridge. The truck link is separated from the second tread surface of the idler by pressing the truck bush radially outward with the outer peripheral surface of the elastic annular 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を形成する中央凸部７を
跨いでその両側に突条８Ａ，８Ｂを有するセグメ
ント状の合成ゴム等よりなる弾性環状体８を第一
踏面４まわりに周設する。弾性環状体８の各セグ
メントは図示のような断面形状を有し、上記中央
凸部７の両側に位置する突条８Ａ，８Ｂと該第一
踏面４上にあつてトラツクチエーン１２のトラツ
クブツシユ１４と係合する本体部８Ｃとを含む。
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の各セグメントの突条８Ａ，８
Ｂには周方向に適宜間隔を明けた位置にアイドラ
軸とほぼ平行に伸びる剛性の管状部片２８Ａ，２
８Ｂが埋設固定されており、これら管状部片２８
Ａ，２８Ｂの管孔３０Ａ，３０Ｂはアイドラ２の
中央凸部７に周方向に適宜間隔を置いて穿設され
たボルト孔３２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ぼ平行に伸びる
貫通孔を形成している。上記整合したボルト孔３
２と管孔３０Ａ，３０Ｂにはボルト３４がアイド
ラ一側より挿入され、アイドラ他側にて該ボルト
３４先端をナツト３６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、弾
性環状体８の各セグメント両側部に、図示のよう
に本体部８Ｃより突条８Ａ，８Ｂに亘つて伸びる
補強金属板３８Ａ，３８Ｂを焼付によつて固着
し、該金属板３８Ａ，３８Ｂを図示のような断面
形状とすることにより、トラツクブツシユ１４と
接触する弾性環状体８の本体部８Ｃの接触巾Ｗを
増大すると共に該本体部に付加的な支持を与える
ことが望ましい。 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 elastic annular body 8 made of a segment-shaped synthetic rubber or the like is provided around the first tread surface 4, straddling the central convex portion 7 forming the first tread surface 4 and having protrusions 8A, 8B on both sides thereof. Each segment of the elastic annular body 8 has a cross-sectional shape as shown in the figure, and includes protrusions 8A and 8B located on both sides of the central convex portion 7, and a track bush 14 of the track chain 12 on the first tread surface 4. It includes a main body portion 8C that engages with the main body portion 8C.
The height of the resilient annular body 8 is selected such that the outer circumferential surface of the resilient annular body normally presses the truck bush 14 radially outwardly, causing the truck link 16 to be spaced apart from the second tread surface 18 of the idler, as shown. It can be done. Projections 8A, 8 on each segment of the elastic annular body 8
Rigid tubular pieces 28A, 2 extending approximately parallel to the idler shaft are provided at appropriate intervals in the circumferential direction at B.
8B are buried and fixed, and these tubular pieces 28
The pipe holes 30A and 30B of A and 28B are aligned with the bolt holes 32 bored at appropriate intervals in the circumferential direction in the central convex portion 7 of the idler 2, and are connected to the idler shaft from one side of the idler to the other side of the idler. A through hole is formed that extends almost parallel. Aligned bolt hole 3 above
A bolt 34 is inserted into the idler 2 and the tube holes 30A and 30B from one side of the idler, and the elastic annular body 8 is fixed to the idler 2 by securing the tip of the bolt 34 with a nut 36 on the other side of the idler. In addition, reinforcing metal plates 38A and 38B extending from the main body 8C to the protrusions 8A and 8B are fixed to both sides of each segment of the elastic annular body 8 by baking, as shown in the figure. It is desirable to increase the contact width W of the main body portion 8C of the elastic annular body 8 that comes into contact with the truck bushing 14 and provide additional support to the main body portion by forming the cross-sectional shape as shown in the figure.
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３０Ａ，３０Ｂとアイ
ドラ２のボルト孔３２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３４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、弾性環状体の外周面には従来のようにボル
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
破損することがない。さらに、図示のように、弾
性環状体８の本体部８Ｃの横巾、つまりトラツク
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の本体部８Ｃと第一踏面４との間を固
着して弾性環状体をアイドラ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 30A and 30B provided in each segment of the elastic annular body 8 are aligned with the bolt holes 32 of the idler 2, and then the bolt holes 32 of the idler 2 are fixed. Since the bolts 34 can be inserted into the aligned holes from the side of the idler to fix the idler, the work of attaching the elastic annular body to the idler is facilitated, and it is also possible to drill bolt attachment holes in the outer peripheral wall of the idler 2. There is no reduction in the strength of the idler.
Further, since there is no need to provide a recess for storing bolts in the outer circumferential surface of the elastic annular body as in the conventional case, 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 width of the main body 8C of the elastic annular body 8, that is, the contact width W with the track bushing 14 is increased to reduce the contact surface pressure, thereby greatly extending the life of the elastic annular body. be able to. In this case, it is desirable that the main body portion 8C of the elastic annular body 8 and the first tread surface 4 be firmly fixed, and the elastic annular body be firmly fixed by the idler.
なお、本発明装置にあつ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.
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
とができる装軌式車輌のアイドラまわりにおける
騒音低減装置が提案される。 As described above, according to the present invention, it is possible to easily attach the elastic annular body to the idler, and to improve the strength and durability of the idler and the elastic annular body, thereby reducing noise around the idler of a tracked vehicle. A device is proposed.
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、７……中央
凸部、８……弾性環状体、８Ａ，８Ｂ……突条、
８Ｃ……本体部、１４……トラツクブツシユ、１
６……トラツクリンク、１８……第二踏面、２８
Ａ，２８Ｂ……管状部片、３０Ａ，３０Ｂ……管
孔、３２……ボルト孔、３４……ボルト、３６…
…ナツト、３８Ａ，３８Ｂ……補強金属板。
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 sectional view of another conventional device, FIG. 4 is a sectional view taken along the line - in FIG. 3 and can be partially omitted, FIG. 5 is a side view of the device of the present invention, and FIG. Fifth
It is a sectional view taken along the - line in the figure. 2...Idler, 4...First tread, 7...Central convex portion, 8...Elastic annular body, 8A, 8B...Protrusion,
8C...Main unit, 14...Track button, 1
6... Track link, 18... Second tread, 28
A, 28B... Tubular piece, 30A, 30B... Tube hole, 32... Bolt hole, 34... Bolt, 36...
... Nut, 38A, 38B... Reinforced metal plate.
Claims (1)
減装置であつて、該アイドラの第一踏面を形成す
る中央凸部を跨いで両側に突条を有するセグメン
ト状の弾性環状体を該第一踏面に沿つて周設し、
該アイドラ中央凸部および該凸部両側に位置する
弾性環状体の各突条に周方向に適宜間隔を置いて
ほぼ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
弾性環状体は前記第一踏面上のほぼ全面上に伸び
る本体部を含み、該本体部が第一踏面上に固着さ
れており、前記弾性環状体の各突条に形成される
貫通孔は該突条内に埋設された剛性環状部片によ
り形成されており、前記弾性環状体の両側部に前
記本体部より突条に亘つて補強金属板が一体に固
着されており、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, in which a segment-shaped elastic annular body having protrusions on both sides is installed along the first tread of the idler, straddling the central convex portion that forms the first tread. Around the world,
forming through holes extending substantially parallel to the idler axis at appropriate intervals in the circumferential direction in each protrusion of the idler central convex portion and the elastic annular body located on both sides of the convex portion;
The elastic annular body is fixed to the idler by inserting a bolt into the through hole from one side of the idler. The through hole formed in each protrusion of the elastic annular body is formed by a rigid annular piece embedded in the protrusion, and the through hole formed in each protrusion of the elastic annular body is formed by a rigid annular piece embedded in the protrusion. A reinforcing metal plate is integrally fixed from the main body part to the protrusion, and by pressing the track bushing radially outward with the outer peripheral surface of the elastic annular body, the track link is separated from the second tread surface of the idler. A noise reduction device around an idler of a tracked vehicle, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14267780A JPS5766075A (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 |
|---|---|---|---|
| JP14267780A JPS5766075A (en) | 1980-10-13 | 1980-10-13 | Reducer for noise around idler of crawler type vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5766075A JPS5766075A (en) | 1982-04-22 |
| JPS6121867B2 true JPS6121867B2 (en) | 1986-05-29 |
Family
ID=15320938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14267780A Granted JPS5766075A (en) | 1980-10-13 | 1980-10-13 | Reducer for noise around idler of crawler type vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5766075A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5829849A (en) * | 1996-11-27 | 1998-11-03 | Caterpillar Inc. | Undercarriage assembly for attack-type machine |
| US8770676B2 (en) * | 2010-12-21 | 2014-07-08 | Caterpillar Inc. | Rotatable idler for undercarriage system in a track-type machine |
| PL2548789T3 (en) * | 2011-07-18 | 2014-11-28 | Voegele Ag J | Track assembly |
-
1980
- 1980-10-13 JP JP14267780A patent/JPS5766075A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5766075A (en) | 1982-04-22 |
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