JP4396942B2 - Work machine - Google Patents

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Publication number
JP4396942B2
JP4396942B2 JP2005333551A JP2005333551A JP4396942B2 JP 4396942 B2 JP4396942 B2 JP 4396942B2 JP 2005333551 A JP2005333551 A JP 2005333551A JP 2005333551 A JP2005333551 A JP 2005333551A JP 4396942 B2 JP4396942 B2 JP 4396942B2
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Prior art keywords
support shaft
tank
hydraulic oil
filter
low
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JP2007138545A (en
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克治 権守
淳 上田
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Caterpillar Japan Ltd
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Caterpillar Japan Ltd
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Description

本発明は、作動油タンクを搭載した油圧ショベル等の作業機械の技術分野に属するものである。   The present invention belongs to the technical field of work machines such as hydraulic excavators equipped with hydraulic oil tanks.

一般に、これらの作業機械においてはアクチュエータ作動を油圧で行うものがあり、このような場合、作動油タンクを機体本体に搭載することになる。ところで近時、作業機械のコンパクト化が要求され、このため作動油タンクの配設スペースについても、他の部材装置との配設に大きく影響されることになって自由な場所に配設することができないのが実情である。
このような作業機械が例えば油圧ショベルである場合、ブームを挟んで左右方向一側(通常は左側)に運転操縦席を備えたキャブを設け、他側(通常は右側)に作動油タンクを設けることがある。ところで油圧ショベルにおいては、メンテナンス等のため架台フレームからブームを取外すことがあり、そのためにはブーム基端部に抜き差し自在に取付けられる支軸を左右方向に抜き出してブームを機体本体から脱離させるが、支軸のキャブ側への引出しは該キャブが邪魔をすることになって抜き出すことができず、作動油タンク側に支軸を抜き出すことになる。このため作動油タンクを、該支軸の抜き出しの邪魔にならないよう低い構成にする必要がある。
ところで作動油タンクには、カプセルフィルタ等のフィルタ(例えばリターンフィルタ)が取付けられるが、このようなフィルタを取付けるにあたり、作動油タンクの高さを、前記支軸の抜き出し高さに対応させて低くしたものとし、このような低いタンクにフィルタを取付ける場合、フィルタの長さが長いこともあって該フィルタをタンク上面から上方に突出する状態で取付けるようにすることが提唱される(例えば特許文献1)。
特開平8−200302号公報
In general, some of these work machines perform actuator operation hydraulically. In such a case, a hydraulic oil tank is mounted on the main body. By the way, recently, it is required to make the work machine compact, and therefore, the installation space of the hydraulic oil tank is also greatly affected by the arrangement with other member devices, and should be arranged in a free place. The fact is that you can't.
When such a work machine is, for example, a hydraulic excavator, a cab having a driver's cockpit is provided on one side in the left-right direction (usually the left side) across the boom, and a hydraulic oil tank is provided on the other side (usually the right side). Sometimes. By the way, in the case of a hydraulic excavator, the boom may be removed from the gantry frame for maintenance or the like. For this purpose, the support shaft that is removably attached to the base end of the boom is extracted in the left-right direction, and the boom is detached from the main body. When the spindle is pulled out to the cab side, the cab disturbs and cannot be pulled out, and the spindle is pulled out to the hydraulic oil tank side. For this reason, it is necessary to make the hydraulic oil tank low so as not to obstruct the extraction of the support shaft.
By the way, a filter such as a capsule filter (for example, a return filter) is attached to the hydraulic oil tank. When installing such a filter, the height of the hydraulic oil tank is set low to correspond to the extraction height of the support shaft. When a filter is attached to such a low tank, it is proposed that the filter is mounted in a state of protruding upward from the upper surface of the tank because the length of the filter is long (for example, Patent Documents). 1).
JP-A-8-200302

ところで作動油タンクは、作動油の充填容量量が多いほど好ましいものであるが、前述したように作動油タンクを低いものにすると、その分、作動油の容量が少なくなってしまうことになって、頻繁な作動油の補充や交換作業が要求され、面倒かつ煩雑になるという問題があり、ここに本発明が解決せんとする課題がある。   By the way, the hydraulic oil tank is more preferable as the filling capacity amount of the hydraulic oil is larger. However, if the hydraulic oil tank is made low as described above, the hydraulic oil capacity is reduced accordingly. Therefore, there is a problem that frequent replenishment and replacement work of hydraulic oil is required, which is troublesome and complicated, and there is a problem that the present invention does not solve.

本発明は、上記の如き実情に鑑みこれらの課題を解決することを目的として創作されたものであって、請求項1の発明は、架台ブラケットに支軸を介してブームを上下揺動自在に取付けると共に、該支軸の軸芯方向側方に作動油タンクを配設してなる作業機械において、前記作動油タンクを、支軸の軸芯方向側方部位から外れた部位に位置して支軸高さよりも高い高タンク部と、支軸の軸芯方向側方部位に位置して支軸高さよりも低い低タンク部とで構成して支軸の架台ブラケットへの抜き差しができるようにすると共に、前記低タンク部上板面には、支軸の前記抜き差しの邪魔をしない位置に、該低タンク部上板面から上方に突出するようにしてフィルタを取付けるための取付けスペースが確保されていることを特徴とする作業機械である。
請求項2の発明は、請求項1記載の作業機械において、フィルタは高タンク上面板と略同高さであり、該フィルタ上端部が高タンク部に一体的に支持されていることを特徴とする作業機械である。
The present invention was created in view of the above-described circumstances in order to solve these problems, and the invention of claim 1 enables the boom to be swung up and down via a support shaft on a gantry bracket. In a work machine in which a hydraulic oil tank is disposed on the side of the support shaft in the axial direction, the hydraulic oil tank is positioned at a position away from the side of the support shaft in the axial direction. It is composed of a high tank part that is higher than the shaft height and a low tank part that is located in the axial direction side part of the support shaft and that is lower than the support shaft height so that the support shaft can be inserted into and removed from the mounting bracket. At the same time, a mounting space for mounting the filter is secured on the upper plate surface of the low tank portion so as to protrude upward from the upper plate surface of the low tank portion at a position that does not interfere with the insertion and removal of the support shaft. It is a working machine characterized by
According to a second aspect of the present invention, in the work machine according to the first aspect, the filter has substantially the same height as the upper plate of the high tank, and the upper end of the filter is integrally supported by the high tank portion. Work machine.

請求項1の発明とすることで、支軸の抜き差しが作動油タンクは勿論のこと、フィルタにも邪魔されずにできながら、作動油容量も多く、フィルタの取付けスペースも低タンク部に無理なく確保することができる。
請求項2の発明とすることで、低タンク部上板面から高タンク部上板面高さまで突出したフィルタの支持が確実になって、フィルタの保護が計れることになる。
With the invention of claim 1, the support shaft can be inserted and removed without being disturbed by the filter as well as the hydraulic oil tank, but the hydraulic oil capacity is large and the installation space for the filter can be easily adjusted to the low tank portion. Can be secured.
According to the invention of claim 2, the support of the filter protruding from the low tank portion upper plate surface to the height of the high tank portion upper plate surface is ensured, and the filter can be protected.

次ぎに、本発明の実施の形態について図面に基づいて説明する。図中、1は油圧ショベルの走行機体であって、該走行機体1は、クローラ型走行装置2を備えた下部走行体3に上部旋回体4を旋回自在に設けて構成される。上部旋回体4を構成する架台フレーム5の前半側には、左右方向中央部位に位置して左右方向を向く支軸6を介してブーム7の基端部が上下揺動自在に軸支され、該ブーム7を挟んで左右方向一側(本実施の形態では左側)にはキャブ8が配設され、他側(本実施の形態では右側)には、コントロール弁9が前側に、作動油タンク10および燃料タンク11が後側にそれぞれ配されているが、作動油タンク10と燃料タンク11とは、作動油タンク10がブーム7に対して左右方向他側に隣接し、燃料タンク11が作動油タンク10に対してさらに左右方向他側に隣接する配置構成になっている。また、架台フレーム5の後半側には、ブーム7の後方に位置する状態でエンジン12が、キャブ8の後方に位置する状態でラジエータ等の部材装置13が、作動油タンク10および燃料タンク11の後方に位置する状態でメインポンプ14がそれぞれ配設されている。   Next, embodiments of the present invention will be described with reference to the drawings. In the figure, reference numeral 1 denotes a traveling machine body of a hydraulic excavator, and the traveling machine body 1 is configured by a lower traveling body 3 provided with a crawler type traveling device 2 and an upper revolving body 4 that is turnably provided. The base end portion of the boom 7 is pivotally supported on the front half side of the gantry frame 5 constituting the upper swing body 4 via a support shaft 6 that is located in the central portion in the left-right direction and faces in the left-right direction, A cab 8 is disposed on one side in the left-right direction (left side in the present embodiment) across the boom 7, and a control valve 9 is disposed on the front side on the other side (right side in the present embodiment). 10 and the fuel tank 11 are arranged on the rear side, but the hydraulic oil tank 10 and the fuel tank 11 are adjacent to the other side in the left-right direction with respect to the boom 7, and the fuel tank 11 operates. The oil tank 10 is further arranged adjacent to the other side in the left-right direction. Further, on the rear half side of the gantry frame 5, the engine 12 is located behind the boom 7, and the member device 13 such as a radiator is located between the hydraulic oil tank 10 and the fuel tank 11 while located behind the cab 8. The main pumps 14 are respectively disposed in a state of being located rearward.

前記作動油タンク10は、矩形状をしているが、前半側が支軸6高さよりも低い低タンク部10aと、後半側が支軸6高さよりも高い高タンク部10bとを備えて構成されている。そして低タンク部10aは、前面板10cが前記支軸6よりも僅かではあるが前側に位置する配置構成となっており、これによって支軸6の軸芯方向側方部位が支軸6よりも低くなっていて支軸6を作動油タンク10に邪魔されないで抜き差しできるようになっている。   The hydraulic oil tank 10 has a rectangular shape, and includes a low tank portion 10a whose front half is lower than the height of the support shaft 6 and a high tank portion 10b whose rear half is higher than the height of the support shaft 6. Yes. The low tank portion 10 a has an arrangement configuration in which the front plate 10 c is positioned slightly forward than the support shaft 6, whereby the axial direction side portion of the support shaft 6 is more than the support shaft 6. The support shaft 6 is lowered and can be inserted and removed without being obstructed by the hydraulic oil tank 10.

前記低タンク部10aの上板面10dには、支軸6の軸芯方向側方位置よりも後方に位置してリターンフィルタ(カプセルフィルタ)15の取付けスペースSが確保されており、該取付けスペースSに取付けられるリターンフィルタ15は、円筒形をし、低タンク部10aの上板面10dから上方に突出してその上端部が高タンク部10bの上面板10eと略同高さとなるように構成されている。そして該リターンフィルタ15の上端部は、高タンク部10bの前面板10fから前方に突設したブラケット16に止着されていて一体化されている。
因みに、前記リターンフィルタ15は、リターン油の入口15aが低タンク部10aの前面板10cに形成され、エレメント(図示せず)で濾過された作動油を作動油タンク10に供給するための供給口15bが低タンク部10aの底面板10gに隙間を存して設けられている。尚、17は高タンク部10bに設けられるメンテナンス用のサクションスクリーンである。
On the upper plate surface 10d of the low tank portion 10a, a mounting space S for a return filter (capsule filter) 15 is secured behind the axial center side position of the support shaft 6, and the mounting space is secured. The return filter 15 attached to S has a cylindrical shape, and protrudes upward from the upper plate surface 10d of the low tank portion 10a so that the upper end thereof is substantially the same height as the upper plate 10e of the high tank portion 10b. ing. The upper end portion of the return filter 15 is fixed to and integrated with a bracket 16 projecting forward from the front plate 10f of the high tank portion 10b.
Incidentally, the return filter 15 has a return oil inlet 15a formed in the front plate 10c of the low tank portion 10a, and a supply port for supplying hydraulic oil filtered by an element (not shown) to the hydraulic oil tank 10. 15b is provided in the bottom plate 10g of the low tank portion 10a with a gap. Reference numeral 17 denotes a maintenance suction screen provided in the high tank portion 10b.

叙述の如く構成された本発明の実施の形態において、作動油タンク10は、支軸6の軸芯方向側方に隣接して配されながら、支軸6の軸芯方向側方部位が支軸6よりも低い低タンク部10aとなっているため、支軸6の抜き差しの邪魔をすることがない。しかも支軸の軸芯方向部位から外れた後半部が高タンク部10bとなっていて作動油容量を多く確保できる配慮がなされており、この結果、作動油容量の多いものにできる。   In the embodiment of the present invention configured as described above, the hydraulic oil tank 10 is disposed adjacent to the axial direction side of the support shaft 6 while the axial direction side portion of the support shaft 6 is the support shaft. Since the lower tank portion 10a is lower than 6, the support shaft 6 is not disturbed. In addition, the latter half portion of the support shaft that is separated from the axial direction portion is the high tank portion 10b, and consideration is given to securing a large amount of hydraulic oil. As a result, the hydraulic fluid capacity can be increased.

しかもこのものでは、低タンク部10aの上面板10dに、支軸6の軸芯方向側方位置よりも後方に位置していて支軸6の抜き差しの邪魔をしない位置にリターンフィルタ15の取り付けスペースSが確保されているため、リターンフィルタ15を無理なく取付けることができる。しかもリターンフィルタ15は、低タンク部10aから上方に突出している部分についても作動油が入ることになり、該入っている分だけ多くの作動油容量を確保できることになる。   In addition, in this case, the space for attaching the return filter 15 to the upper surface plate 10d of the low tank portion 10a is located behind the side position in the axial direction of the support shaft 6 and does not obstruct the insertion and removal of the support shaft 6. Since S is secured, the return filter 15 can be attached without difficulty. In addition, the return filter 15 is filled with hydraulic oil even in a portion protruding upward from the low tank portion 10a, and a larger amount of hydraulic oil can be secured by the amount of the hydraulic oil.

そのうえこのものでは、リターンフィルタ15は、低タンク部10aから突出している上端部分が高タンク部10b側に一体的に支持される構成になっているため、突出上端部分が遊端となって機体振動を受けたりして不用意に振動してしまうことを回避できる。   In addition, in this case, the return filter 15 is configured such that the upper end portion protruding from the low tank portion 10a is integrally supported on the high tank portion 10b side, so that the protruding upper end portion becomes a free end and the airframe. It is possible to avoid inadvertent vibration due to vibration.

油圧ショベルの全体側面図である。1 is an overall side view of a hydraulic excavator. 上部旋回体の要部平面図である。It is a principal part top view of an upper revolving structure. 上部旋回体の要部側面図である。It is a principal part side view of an upper revolving structure. 作動油タンクの斜視図である。It is a perspective view of a hydraulic oil tank. 作動油タンクを示すものであって、(A)は平面図、(B)は正面図、(C)は一部を切り欠いた側面図、(D)はリターンフィルタ部位の拡大斜視図である。FIG. 2 shows a hydraulic oil tank, where (A) is a plan view, (B) is a front view, (C) is a side view with a part cut away, and (D) is an enlarged perspective view of a return filter portion. .

符号の説明Explanation of symbols

1 走行機体
5 架台フレーム
6 支軸
7 ブーム
8 キャブ
10 作動油タンク
10a 低フィルタ部
10b 高フィルタ部
10c 低フィルタ部前面板
10d 低フィルタ部上面板
15 リターンフィルタ
16 ブラケット
DESCRIPTION OF SYMBOLS 1 Traveling machine body 5 Base frame 6 Support shaft 7 Boom 8 Cab 10 Hydraulic oil tank 10a Low filter part 10b High filter part 10c Low filter part front plate 10d Low filter part upper plate 15 Return filter 16 Bracket

Claims (2)

架台ブラケットに支軸を介してブームを上下揺動自在に取付けると共に、該支軸の軸芯方向側方に作動油タンクを配設してなる作業機械において、前記作動油タンクを、支軸の軸芯方向側方部位から外れた部位に位置して支軸高さよりも高い高タンク部と、支軸の軸芯方向側方部位に位置して支軸高さよりも低い低タンク部とで構成して支軸の架台ブラケットへの抜き差しができるようにすると共に、前記低タンク部上板面には、支軸の前記抜き差しの邪魔をしない位置に、該低タンク部上板面から上方に突出するようにしてフィルタを取付けるための取付けスペースが確保されていることを特徴とする作業機械。   In a work machine in which a boom is attached to a gantry bracket via a support shaft so as to be swingable up and down, and a hydraulic oil tank is disposed on the side of the support shaft in the axial direction, the hydraulic oil tank is attached to the support shaft. Consists of a high tank part that is located at a part off the axial side part and higher than the spindle height, and a low tank part that is located on the side part of the spindle in the axial direction and lower than the support part height. Thus, the support shaft can be inserted into and removed from the mounting bracket, and the upper plate surface of the low tank portion protrudes upward from the upper plate surface of the low tank portion so as not to interfere with the insertion and removal of the support shaft. A working machine characterized in that a mounting space for mounting the filter is secured. 請求項1記載の作業機械において、フィルタは高タンク上面板と略同高さであり、該フィルタ上端部が高タンク部に一体的に支持されていることを特徴とする作業機械。   2. The work machine according to claim 1, wherein the filter is substantially the same height as the upper surface plate of the high tank, and the upper end portion of the filter is integrally supported by the high tank portion.
JP2005333551A 2005-11-18 2005-11-18 Work machine Expired - Fee Related JP4396942B2 (en)

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Application Number Priority Date Filing Date Title
JP2005333551A JP4396942B2 (en) 2005-11-18 2005-11-18 Work machine

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JP2007138545A JP2007138545A (en) 2007-06-07
JP4396942B2 true JP4396942B2 (en) 2010-01-13

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Publication number Priority date Publication date Assignee Title
JP6259359B2 (en) * 2014-06-09 2018-01-10 株式会社クボタ Hydraulic oil tank device

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