JPH04130589U - Idler support device for tracked vehicles - Google Patents
Idler support device for tracked vehiclesInfo
- Publication number
- JPH04130589U JPH04130589U JP4637391U JP4637391U JPH04130589U JP H04130589 U JPH04130589 U JP H04130589U JP 4637391 U JP4637391 U JP 4637391U JP 4637391 U JP4637391 U JP 4637391U JP H04130589 U JPH04130589 U JP H04130589U
- Authority
- JP
- Japan
- Prior art keywords
- idler
- yoke
- forth
- support device
- track frame
- 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.)
- Pending
Links
- 230000001050 lubricating effect Effects 0.000 claims description 2
- 238000005461 lubrication Methods 0.000 abstract description 2
- 239000004519 grease Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 210000002445 nipple Anatomy 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Landscapes
- Vehicle Body Suspensions (AREA)
Abstract
(57)【要約】
【目的】 走行により衝撃により前後スライドするアイ
ドラを調整、補修不要で、かつ潤滑を可能にした強固な
アイドラ指示により磨耗寿命の向上を可能とする。
【構成】 トラックフレーム前端部でアイドラを支承す
る二又状ヨーク両分岐片部に貫通孔を穿設したボス部を
突設し、該貫通孔にトラックフレーム両側面部に取設し
た軸杆を嵌挿して前記ヨークを支持すると共に、アイド
ラが受ける衝撃に対して該ヨークをガイドしながら前後
スライドさせるようにしたことを特徴としている。
(57) [Summary] [Purpose] The idler, which slides back and forth due to impact during driving, does not require adjustment or repair, and the wear life can be improved by providing strong idler instructions that enable lubrication. [Structure] A boss portion with a through hole is provided protruding from both branch parts of the bifurcated yoke that supports the idler at the front end of the truck frame, and the shaft rods attached to both sides of the truck frame are fitted into the through hole. It is characterized in that it is inserted to support the yoke, and is slid back and forth while guiding the yoke against the impact received by the idler.
Description
【0001】0001
本考案はブルドーザの如き装軌式車両の下部走行体を構成するアイドラをトラ ックフレームに前後方向揺動自在に支持する装置に関する。 This invention is designed to transport idlers that make up the undercarriage of tracked vehicles such as bulldozers. This invention relates to a device that is supported on a rack frame so as to be swingable in the front and rear directions.
【0002】0002
従来この主の装軌式車両の下部走行体は図4,5に示すように後部に図示しな い車体のエンジンからパワーラインを経て回転駆動されるスプロケット1を備え 、この前後には車体フレームに懸架されたトラックフレーム2の前部に巻バネか らなるアイドラクッション機構3によって前方向に不勢されたアイドラ4が二又 状ヨーク5によって支持されており、下部には複数個の下部に複数個の下転輪6 が、そして上部に上転輪7が夫々回転自在に配設されたうえ、これらスプロケッ ト1、アイドラ4及び上下転輪6,7に履帯8が巻装されて前記スプロケット1 の回転駆動によって走行するようになっている。 Conventionally, the undercarriage of this main tracked vehicle was located at the rear, not shown, as shown in Figures 4 and 5. Equipped with a sprocket 1 that is rotationally driven from the engine of the car body via the power line. , Before and after this, there are coiled springs attached to the front of the truck frame 2, which is suspended on the vehicle body frame. The idler 4, which is biased forward by the idler cushion mechanism 3 consisting of It is supported by a shaped yoke 5, and a plurality of lower wheels 6 are provided at the lower part. However, the upper wheels 7 are rotatably arranged on the upper part, and these sprockets A crawler belt 8 is wound around the sprocket 1, the idler 4, and the upper and lower rollers 6 and 7, and the sprocket 1 It is designed to run by rotational drive.
【0003】 かかる下部走行体におけるアイドラ支持に際してはアイドラ軸9の両端がアイ ドラクッション機構3の前部に二又状ヨーク5を介して取付けられたアイドラサ ポート10に支承されたうえ、トラックフレーム2上面のウエアプレート11上 を前後移動自在に支持されるようになっていた。0003 When supporting the idler in such an undercarriage, both ends of the idler shaft 9 are An idler riser attached to the front part of the drag cushion mechanism 3 via a forked yoke 5 In addition to being supported by the port 10, it is also supported on the wear plate 11 on the top surface of the truck frame 2. It was designed to be supported so that it could be moved back and forth.
【0004】0004
しかし、上記アイドラ支持構造では、大型で重量物であるブルトーザが凹凸の 作業地で、しかも土砂、泥水のなかを走行する場合においては、アイドラ4に前 方向から、或いは下方向からの衝撃が加わる度にアイドラサポート10がウエア プレート11を加圧しながら前後に摺動を繰返すと共に、この間に土砂、泥水が 侵入して益々該ウエアプレート11の摩耗を早め短期に交換するという不具合が あった。しかも、アイドラサポート10をガイド部材12が係合しているだけで あることから下方向から衝撃荷重がアイドラ4に加わると、該アイドラ4は強度 上耐えられないという不具合があった。 However, with the above idler support structure, the bulldozer, which is a large and heavy object, has uneven surfaces. When driving in a work area and through dirt and muddy water, the idler 4 should be The idler support 10 wears every time an impact is applied from the direction or from below. The plate 11 is repeatedly slid back and forth while being pressurized, and during this time, dirt and muddy water are removed. This causes the problem that the wear plate 11 becomes more worn out and needs to be replaced in a short period of time. there were. Moreover, the guide member 12 only engages the idler support 10. Therefore, if an impact load is applied to the idler 4 from below, the idler 4 will lose its strength. There was a problem with the product being unbearable.
【0005】 本考案は上記不具合を解消する目的でなされたもので、摩耗による短期交換し なければならないウエアプレート11を廃止し長期にわたって調整不要で衝撃荷 重に耐えられる装軌式車両のアイドラ支持装置を提供しようとするものである。[0005] This invention was developed with the aim of solving the above-mentioned problems. Eliminating the wear plate 11 that would otherwise have caused shock loads without the need for long-term adjustments. It is an object of the present invention to provide an idler support device for a tracked vehicle that can withstand heavy loads.
【0006】[0006]
本考案は上記目的を達成するために、下部走行体を構成するトラックフレーム 前端開口部においてアイドラクッション機構で前方へ付勢された二又状ヨークに より回転自在にアイドラを軸支した装軌式車両のアイドラ支持構造において、前 記二又状ヨークの分岐両片部に左右一対の貫通孔を穿設し、該貫通孔に摺動自在 に挿嵌する軸杆を夫々前記トラックフレームの前端両側面部に長手方向に取着し たうえ、該摺動面部に給脂するようにしてアイドラを回転自在に、かつ前後移動 自在にトラックフレームに支持するようにして既述の不具合を解消した。 In order to achieve the above-mentioned purpose, the present invention has developed a track frame that constitutes an undercarriage At the front end opening, the forked yoke is biased forward by an idler cushion mechanism. In the idler support structure of a tracked vehicle, which supports the idler more freely, the front A pair of left and right through holes are drilled in both branched parts of the forked yoke, and the yoke can slide freely into the through holes. The shaft rods to be inserted into the truck frame are respectively attached in the longitudinal direction to both side surfaces of the front end of the truck frame. Furthermore, the idler can be freely rotated and moved back and forth by lubricating the sliding surface. The above-mentioned problems were solved by freely supporting the truck frame.
【0007】 上記の如くアイドラ支持構造にすることにより、アイドラに加わる前方向、或 いは、下方向からの衝撃に対して軸杆と二又状ヨークの結合構造によって、こう した衝撃荷重に対応しながら前後方向の移動を円滑に行うと共に、土砂、泥水の 侵入も最小限に止めて揺動部材の摩耗寿命を延ばすようにしたものである。[0007] By adopting the idler support structure as described above, the forward direction or In addition, the joint structure of the shaft rod and forked yoke protects against impact from below. It allows for smooth movement in the front and back directions while dealing with the impact loads caused by Intrusion is also minimized to extend the wear life of the swinging member.
【0008】[0008]
以下、本考案の一実施例を添付図面を参照して詳述する。なお従来技術と同一 部材については同一符号を用いて説明する。図1は下部走行体のアイドラ支持部 を示す一部破断側面図、図2は図1のA−A断面図を示したもので、トラックフ レーム2の前端開口部にアイドラ4が遊嵌されており、このアイドラ軸9には中 央の鍔部13を挟んで両側にブッシュ14及びつば付鉄ブッシュ15がアイドラ 4と一体に回転自在に挿嵌されていると共に、該アイドラ軸9の両端は巻バネか らなるアイドラクッション機構3で前方向に付勢されている二又状ヨーク16の 前部分岐両片部16a,16aに支承されている。 Hereinafter, one embodiment of the present invention will be described in detail with reference to the accompanying drawings. Note that it is the same as the conventional technology. The members will be explained using the same reference numerals. Figure 1 shows the idler support part of the lower running body. FIG. 2 is a cross-sectional view taken along line A-A in FIG. An idler 4 is loosely fitted into the front end opening of the frame 2, and the idler shaft 9 has a middle A bush 14 and a flanged iron bush 15 are installed on both sides of the central flange 13 as idlers. 4 and is rotatably inserted into the idler shaft 9, and both ends of the idler shaft 9 are fitted with coiled springs. The forked yoke 16 is biased forward by an idler cushion mechanism 3 consisting of It is supported by both front branch pieces 16a, 16a.
【0009】 かかる上記二又状ヨーク16のアイドラ4を支承する前端分岐両片部16a, 16aの下部に夫々ボス部16b,16bが突設されたうえ、該ボス部16b, 16bにブッシュ17及び両端にシール18が挿嵌された長手方向の貫通孔16 c,16cが穿設されている。[0009] Both front end branched pieces 16a supporting the idler 4 of the forked yoke 16, Boss portions 16b, 16b are provided protruding from the lower part of 16a, respectively, and the boss portions 16b, A longitudinal through hole 16 into which a bush 17 and seals 18 are fitted at both ends. c, 16c are drilled.
【0010】 一方トラックフレーム2前端のアイドラ4を遊嵌している開口両側前部には図 3に示すように外周面にメッキブッシュ19がコーテングされた軸杆20,20 が長手方向に取設されている。この取設に妻子、夫々後端フランジ部20aがト ラックフレーム2前端面に係合のうえボルト21によって固着され、前端部はア イドラ支持部を完全に被覆するようにトラックフレーム2に取付けられた堅固な カバー22の前面にボルト23に取付けられたプレート24にボルト25で固着 されている。かように取設された両軸杆20,20が二又状ヨーク16の両分岐 片部16a,16aのボス部16b,16bの貫通孔16c,16cに摺動自在 に挿通されてアイドラ4を前後揺動可能に支持する構造となっている。0010 On the other hand, at the front of both sides of the opening where the idler 4 is loosely fitted at the front end of the track frame 2, there is a diagram. As shown in 3, the shaft rods 20, 20 have plated bushes 19 coated on their outer peripheral surfaces. are installed in the longitudinal direction. During this installation, the rear end flange portion 20a of each wife and child is attached. It is engaged with the front end surface of the rack frame 2 and fixed with bolts 21, and the front end is attached to the front end surface of the rack frame 2. A rigid structure is attached to the track frame 2 so as to completely cover the hydraulic support. Fixed with bolts 25 to plate 24 attached to bolts 23 on the front of cover 22 has been done. The double shaft rods 20, 20 installed in this way serve as both branches of the forked yoke 16. It can freely slide into the through holes 16c, 16c of the boss parts 16b, 16b of the pieces 16a, 16a. It has a structure in which the idler 4 is supported so as to be able to swing back and forth.
【0011】 そして上記ヨークボス部16b,16bの貫通孔16c,16cに挿嵌係合さ れた軸杆20,20の摺動面を潤滑するために前記ボス部16b,16bの各外 側面から摺動面に通じる各給脂孔26が穿設されたうえ外側面部にグリスニップ ル27が取付けられている。そしてアイドラ4と一体動して前後揺動する二又状 ヨーク16に従って前記グリスニップル27も前後移動するので、このためにト ラックフレーム2に取付けられているカバー22の側面に長孔28が穿設されて いる。[0011] Then, the yoke boss portions 16b, 16b are fitted into the through holes 16c, 16c. In order to lubricate the sliding surfaces of the shaft rods 20, 20, the outer surfaces of the boss portions 16b, 16b are Each greasing hole 26 leading from the side to the sliding surface is drilled, and a grease nip is provided on the outer side. 27 is attached. And a forked shape that moves together with the idler 4 and swings back and forth. Since the grease nipple 27 also moves back and forth according to the yoke 16, the torque A long hole 28 is bored in the side surface of the cover 22 attached to the rack frame 2. There is.
【0012】 しかしてアイドラ4は前方向、或いは下方向からの衝撃に対して該アイドラ4 を支承する二又状ヨーク16が軸杆20,20によってガイドされながらアイド ラクッション機構3によって緩衝されながら前後方向に揺動を繰返しながら衝撃 を吸収する。0012 Therefore, the idler 4 is protected against impact from the front or from below. The forked yoke 16 supporting the The impact is repeatedly swung back and forth while being cushioned by the Racushion mechanism 3. absorb.
【0013】 しかも軸杆20,20の周面に施したメッキブッシュ19及び該軸杆20,2 0と嵌通するヨークボス部16b,16bの貫通孔16c,16cに嵌着したブ ッシュ17、及びシール18によって摺動による摩耗進行を最小限に止めると共 に、この摺動面の潤滑によって一層摩耗の進行を阻止する。[0013] Moreover, the plated bushing 19 applied to the circumferential surface of the shaft rods 20, 20 and the shaft rods 20, 2 The bushes fitted into the through holes 16c, 16c of the yoke boss parts 16b, 16b that fit into the The progress of wear due to sliding is minimized by the bushing 17 and the seal 18. Furthermore, the lubrication of this sliding surface further inhibits the progress of wear.
【0014】[0014]
本考案は以上の如く構成したので、作業地での走行における激しい衝撃に対し てもアイドラを支承する二又ヨークが軸杆によって係合ガイドされ、かつアイド ラクッション機構によって緩衝しながら前後揺動し、しかも荷重受けとしては最 適な軸杆構造により面圧も小さくなり、しかもシールも容易であることから潤滑 効果が向上し摩耗寿命が大幅に延び、また摩耗によるガタ調整の必要もないこと から装軌式車両、特に稼働条件の厳しい建設機械の下部走行体として最適なもの である。 Since the present invention is constructed as described above, it can withstand severe impact while driving in a work area. Even if the fork yoke supporting the idler is engaged and guided by the shaft rod, and the idler It swings back and forth while being cushioned by the racushion mechanism, and is the best for receiving loads. Appropriate shaft rod structure reduces surface pressure and is easy to seal, making it easy to lubricate. The effectiveness is improved, the wear life is significantly extended, and there is no need to adjust play due to wear. Ideal as an undercarriage for tracked vehicles, especially construction machinery with harsh operating conditions. It is.
【図1】本考案の一実施例を示すアイドラ支持装置の一
部破断側面図である。FIG. 1 is a partially cutaway side view of an idler support device showing an embodiment of the present invention.
【図2】図1のA−A断面図である。FIG. 2 is a sectional view taken along line AA in FIG. 1;
【図3】図1における二又状ヨークと軸杆との係合構造
を示す一部断面側面図である。3 is a partially sectional side view showing the engagement structure between the forked yoke and the shaft rod in FIG. 1; FIG.
【図4】従来の装軌式車両の下部走行体を示す一部破断
側面図である。FIG. 4 is a partially cutaway side view showing an undercarriage of a conventional tracked vehicle.
【図5】図4のアイドラ支持部を示す概略斜視図であ
る。FIG. 5 is a schematic perspective view showing the idler support of FIG. 4;
1 スプロケット 2 トラックフレーム 3 アイドラクッション機構 4 アイドラ 6 下転輪 7 上転輪 9 アイドラ軸 16 二又状ヨーク片部 16a 二又状ヨークボス部 16b ボス部貫通孔 17 ブッシュ 18 シール 19 メッキブッシュ 20 軸杆 22 カバー 24 プレート 26 給脂孔 27 グリスニップル 28 長孔 1 sprocket 2 Track frame 3 Idler cushion mechanism 4 Idler 6 Lower wheel 7 Upper wheel 9 Idler shaft 16 Forked yoke piece 16a Forked yoke boss part 16b Boss through hole 17 Bush 18 Seal 19 Plated bush 20 Axle rod 22 Cover 24 plate 26 Greasing hole 27 Grease nipple 28 long hole
Claims (1)
前端開口部においてアイドラクッション機構で前方へ付
勢された二又状ヨークにより回転自在にアイドラを軸支
した装軌式車両のアイドラ支持構造において、前記二又
状ヨークの分岐両片部に左右一対の貫通孔を穿設し、該
各貫通孔に摺動自在に挿嵌する軸杆を夫々前記トラック
フレームの前端開口両側面部に長手方向に取着したう
え、該摺動面部に給脂するようにしてアイドラを回転自
在に、かつ前後移動自在にトラックフレームに支持する
ようにしたことを特徴とする装軌式車両のアイドラ支持
装置。1. An idler support structure for a tracked vehicle in which an idler is rotatably supported by a forked yoke biased forward by an idler cushion mechanism at a front end opening of a track frame constituting a lower traveling body, comprising: A pair of left and right through holes are bored in both branched portions of the forked yoke, and a shaft rod that is slidably inserted into each of the through holes is installed in the longitudinal direction on both side surfaces of the front end opening of the track frame, respectively. 1. An idler support device for a tracked vehicle, characterized in that the idler is rotatably and freely movable back and forth supported on a track frame by lubricating the sliding surface.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4637391U JPH04130589U (en) | 1991-05-23 | 1991-05-23 | Idler support device for tracked vehicles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4637391U JPH04130589U (en) | 1991-05-23 | 1991-05-23 | Idler support device for tracked vehicles |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH04130589U true JPH04130589U (en) | 1992-11-30 |
Family
ID=31925899
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4637391U Pending JPH04130589U (en) | 1991-05-23 | 1991-05-23 | Idler support device for tracked vehicles |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH04130589U (en) |
-
1991
- 1991-05-23 JP JP4637391U patent/JPH04130589U/en active Pending
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