JP4995786B2 - Double-armed work machine - Google Patents

Double-armed work machine Download PDF

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JP4995786B2
JP4995786B2 JP2008212154A JP2008212154A JP4995786B2 JP 4995786 B2 JP4995786 B2 JP 4995786B2 JP 2008212154 A JP2008212154 A JP 2008212154A JP 2008212154 A JP2008212154 A JP 2008212154A JP 4995786 B2 JP4995786 B2 JP 4995786B2
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cab
opening
entrance
double
operator
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JP2010047946A (en
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泰典 太田
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Hitachi Construction Machinery Co Ltd
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Hitachi Construction Machinery Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a double arm working machine increased in working efficiency by facilitating the getting-on/off of an operator into the operator's cab and a fueling operation. <P>SOLUTION: This double arm working machine includes: a carrier 1; a slewing body 3 rotatably mounted on the upper part of the carrier 1; the operator's cab 4 which is mounted on the upper part of the slewing body 3 at the general center in the lateral direction and which has an entrance 4B on at least one of the right and left sides; first and second working front devices A, B of multi-articulated structure which are mounted on both right and left sides of the operator's cab 4 and in which at least a base provided on the entrance 4B side of the operator's cab 4 is further positioned forward than the operator's cab 4; a scaffold S2 provided to the side of the operator's cab 4 on the slewing body 3 on the entrance side 4B; and a fuel tank 46 installed at the rear of the scaffold S2 on the slewing body 3. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

本発明は、多関節構造の２つの作業フロント装置を備えた双腕型作業機械に関する。   The present invention relates to a double-armed work machine including two work front devices having a multi-joint structure.

多関節構造の作業フロント装置を旋回体の左右に備えた双腕型の作業機械が知られている。双腕型作業機械では、左右の作業フロント装置を同時に別個独立して操作することができ、単腕型の作業機械に比べてより複雑な作業を可能としている（特許文献１等参照)。   2. Description of the Related Art A double-arm type work machine having a multi-joint structure work front device on the left and right sides of a revolving structure is known. In the double-arm type work machine, the left and right work front devices can be operated separately and independently at the same time, and more complicated work is possible as compared with the single-arm type work machine (see Patent Document 1, etc.).

特開２００７−６３８１９号公報JP 2007-63819 A

双腕型作業機械では、旋回体の左右両側に作業フロント装置をそれぞれ設置する関係上、運転室は左右の作業フロントの間に設置されるのが通常である。そのため、運転室の開閉扉を運転室の前部に設け、走行体の前方に設けた排土板上のステップを利用して旋回体の前方から運転室に乗降する構成が採用されていた。   In a double-armed work machine, the driver's cab is usually installed between the left and right work fronts because the work front devices are installed on the left and right sides of the revolving structure. For this reason, a configuration has been adopted in which an opening / closing door of the cab is provided at the front of the cab and gets on and off the cab from the front of the swivel body using a step on the earth removing plate provided in front of the traveling body.

しかしながら、実際の作業現場では機体前方にコンクリートガラや土砂等が山積している状況も珍しくなく、機体前方からの乗降が難しい場合がある。他方、旋回体を旋回させた状態では、運転室の開閉扉が排土板から離れ排土板を利用して運転室に乗降することができない。   However, in an actual work site, it is not uncommon for concrete gravel, earth and sand, etc. to be piled up in front of the aircraft, and getting on and off from the front of the aircraft may be difficult. On the other hand, in a state where the revolving structure is swung, the opening / closing door of the operator's cab is separated from the earth discharging plate and cannot get on and off the operator's cab using the earth discharging plate.

また、旋回体の運転室の左右両側には、各油圧作動装置への圧油の流れを制御するコントロールバルブ等が搭載され、これらコントロールバルブ等を保護するカバー体が設置されている。さらに、運転室の後方にはカウンタウエイト等を設ける必要がある。そのため、運転室の周囲に作業スペースを確保することができず、例えば給油作業等がし難い状況にあった。   In addition, on both the left and right sides of the cab of the swivel body, control valves and the like for controlling the flow of pressure oil to each hydraulic actuator are mounted, and cover bodies for protecting these control valves and the like are installed. Further, it is necessary to provide a counterweight or the like behind the cab. Therefore, a work space cannot be secured around the cab, and for example, it is difficult to perform a refueling operation or the like.

本発明はこのような点に鑑みなされたもので、運転室への乗降や給油作業を容易化し作業効率を向上させることができる双腕型作業機械を提供することを目的とする。   The present invention has been made in view of these points, and an object of the present invention is to provide a double-armed work machine capable of facilitating getting on and off the cab and refueling work and improving work efficiency.

上記目的を達成するため、第１の発明は、走行体と、前記走行体の上部に旋回可能に設けた旋回体と、前記旋回体の上部の左右方向の略中央に設けられ、少なくとも左右のいずれか一方に乗降口を有する運転室と、前記運転室の左右両側に設けられ、そのうちの少なくとも前記運転室の乗降口側に設けた方の基部が前記運転室よりも前方に位置している多関節構造の第１及び第２の作業フロント装置と、前記旋回体上の前記運転室の前記乗降口側の側方に設けた足場と、前記旋回体上の前記足場の後方に設けた燃料タンクとを備えたことを特徴とする。   In order to achieve the above object, a first invention is provided at a substantially center in the left-right direction of a traveling body, a revolving body provided on the top of the traveling body, and capable of swiveling. A driver's cab having one of the entrances and exits on either side of the operator's cab, and at least a base portion provided on the entrance / exit side of the operator's cab is located in front of the operator's cab. First and second work front devices having a multi-joint structure, a scaffold provided on the side of the driver's cab on the revolving structure on the side of the entrance / exit, and a fuel provided behind the scaffold on the revolving structure And a tank.

第２の発明は、第１の発明において、前記乗降口の後縁部にヒンジを介して回動可能に連結された乗降口開閉用の開閉扉をさらに備え、前記開閉扉を全開放したとき、前記開閉扉が前記燃料タンクを含むパワーユニット室に当接又は近接することを特徴とする。   According to a second aspect of the present invention, in the first aspect of the present invention, when the door further includes a door for opening and closing the entrance, which is pivotally connected to a rear edge of the entrance via a hinge, and the door is fully opened The opening / closing door is in contact with or close to a power unit chamber including the fuel tank.

第３の発明は、第１又は第２の発明において、前記開閉扉を開放した際の前記旋回体の側方への突出量は、前記旋回体の最大旋回半径の内側に収まっていることを特徴とする。   According to a third aspect of the present invention, in the first or second aspect of the present invention, when the opening / closing door is opened, the amount of protrusion of the revolving structure to the side is within the maximum revolving radius of the revolving structure. Features.

本発明によれば、運転室の側方に乗降口を設け、その側方に足場を設けたことにより、走行体及び足場を利用して容易に運転室に乗降することができ、なおかつ足場を利用してその後方の燃料タンクへの給油作業を容易にすることができる。   According to the present invention, by providing the entrance / exit on the side of the cab and providing the scaffolding on the side, it is possible to easily get on and off the cab using the traveling body and the scaffold, and It is possible to facilitate the refueling operation to the fuel tank behind it.

以下に図面を用いて本発明の実施形態を説明する。   Embodiments of the present invention will be described below with reference to the drawings.

図１は本発明の一実施の形態に係る双腕型作業機械の全体構成を表す斜視図、図２は旋回体の透視平面図、図３は双腕型作業機械の平面図、図４は左側面図、図５は右側面図、図６は正面図である。以下の説明において図２中の上・下・左・右を旋回体の左・右・後・前とする。なお、図６では左右のフロント作業装置Ａ，Ｂを図示省略している。   FIG. 1 is a perspective view showing the overall configuration of a double-armed work machine according to an embodiment of the present invention, FIG. 2 is a perspective plan view of a revolving structure, FIG. 3 is a plan view of a double-armed work machine, and FIG. FIG. 5 is a left side view, FIG. 5 is a right side view, and FIG. 6 is a front view. In the following description, the upper, lower, left, and right in FIG. 2 are the left, right, rear, and front of the revolving structure. In FIG. 6, the left and right front working devices A and B are not shown.

図１〜図６に示したように、双腕型作業機械１００は、左右一対の履帯１ａを備えた走行体１と、走行体１の上部に旋回輪３９（図２参照）を介して旋回可能に設けた旋回体３と、旋回体３の上部の左右方向の略中央の前方寄りの位置に設けた運転室４と、旋回体３の前部の左右両側に設けた多関節構造の第１及び第２作業フロント装置Ａ，Ｂとを備えている。   As shown in FIGS. 1 to 6, the double-armed work machine 100 turns the traveling body 1 having a pair of left and right crawler belts 1 a and turns on the upper part of the traveling body 1 via a turning wheel 39 (see FIG. 2). The swivel body 3 that can be provided, the operator cab 4 provided at a position near the front of the center of the swivel body 3 in the left-right direction, and the multi-joint structure provided on the left and right sides of the front part of the swivel body 3 1 and 2nd work front devices A and B are provided.

走行体１は、トラックフレーム１ｂと、トラックフレーム１ｂの前後両端部に設けた従動輪１ｃ及び駆動輪１ｄと、駆動輪１ｄに出力軸を連結した走行用油圧モータ１ｅ、従動輪１ｃ及び駆動輪１ｄに掛け回した前出の履帯１ａとを有している。   The traveling body 1 includes a track frame 1b, driven wheels 1c and drive wheels 1d provided at both front and rear ends of the track frame 1b, a traveling hydraulic motor 1e having an output shaft connected to the drive wheels 1d, a driven wheel 1c, and drive wheels. It has the above-mentioned crawler belt 1a hung around 1d.

旋回体３は、運転室４の後方に位置するパワーユニット室Ｐ（後述）と、後縁部に設けたカウンタウエイト８と、旋回体３を旋回させる旋回モータ４８（図２参照）とを有している。上方から見た場合、旋回体３の外形は、旋回中心Cの近傍で左右方向の幅寸法が最大で、旋回中心Ｃ付近から後方の部分に比べて旋回中心Ｃ付近から前方の部分の方が左右方向の幅寸法が狭く形成されている。旋回中心C付近から後方の部分は、上から見て旋回中心Ｃを中心とした半円状に形成されている。旋回モータ４８は、旋回体３の下部で旋回中心Ｃの近傍に固定されており、その出力軸に設けたピニオン（不図示）が走行体１のトラックフレーム１ｂに固定された旋回輪３９の内周部に設けたギア（不図示）に噛合している。よって、旋回モータ４８を駆動させると旋回体３の全体が走行体１に対して旋回する。   The swivel body 3 has a power unit chamber P (described later) located behind the cab 4, a counterweight 8 provided at the rear edge, and a swivel motor 48 (see FIG. 2) that swivels the swivel body 3. ing. When viewed from above, the outer shape of the revolving structure 3 has the largest width in the left-right direction in the vicinity of the turning center C, and the portion from the vicinity of the turning center C to the front portion is closer than the portion from the vicinity of the turning center C to the rear portion. The width dimension in the left-right direction is narrow. The portion from the vicinity of the turning center C to the rear is formed in a semicircular shape centered on the turning center C when viewed from above. The turning motor 48 is fixed in the vicinity of the turning center C at the lower part of the turning body 3, and a pinion (not shown) provided on the output shaft of the turning motor 48 is fixed to the track frame 1 b of the traveling body 1. It meshes with a gear (not shown) provided on the periphery. Therefore, when the turning motor 48 is driven, the entire turning body 3 turns with respect to the traveling body 1.

第１作業フロント装置Ａは、多関節構造のスイング式作業腕で、旋回体３の前部左側で運転室４よりも前方左側に設けた第１ブラケット６ａに取り付けられている。この第１作業フロント装置Ａは、鉛直方向に延びる揺動軸３０ａ（図２参照）を介して第１ブラケット６ａに左右方向に揺動自在に取り付けた取付体７ａと、取付体７ａに上下方向に揺動自在に連結したブーム１０ａと、ブーム１０ａの先端部分に上下方向に揺動自在に連結したアーム１２ａと、アーム１２ａの先端部分に上下方向に回動自在に連結した第１作業具であるグラップル２０ａと、旋回体３に対して取付体７ａを左右揺動させる揺動シリンダ９ａと、取付体７ａに対してブーム１０ａを上下揺動させるブームシリンダ１１ａと、ブーム１０ａに対してアーム１２ａを上下揺動させるアームシリンダ１３ａと、アーム１２ａに対してグラップル２０ａを上下回動させる作業具シリンダ１５ａとを有している。グラップル２０ａは爪を開閉駆動するグラップルシリンダ（不図示）を有する。なお、第１作業具は、このグラップル２０ａの他、作業内容に応じてカッタ、ブレーカ、バケット又はその他の作業具に適宜交換可能である。   The first work front device A is a swing-type work arm having an articulated structure, and is attached to a first bracket 6 a provided on the left side in front of the swivel body 3 and on the left side in front of the cab 4. The first work front device A includes a mounting body 7a attached to the first bracket 6a so as to be swingable in the left-right direction via a swing shaft 30a (see FIG. 2) extending in the vertical direction, and a vertical direction on the mounting body 7a. A boom 10a swingably connected to the arm 10a, an arm 12a swingably connected to the tip end portion of the boom 10a, and a first work tool rotatably connected to the tip end portion of the arm 12a. A grapple 20a, a swing cylinder 9a that swings the mounting body 7a left and right with respect to the swivel body 3, a boom cylinder 11a that swings the boom 10a up and down with respect to the mounting body 7a, and an arm 12a with respect to the boom 10a. Arm cylinder 13a that swings up and down, and a work tool cylinder 15a that rotates the grapple 20a up and down relative to the arm 12a. The grapple 20a has a grapple cylinder (not shown) for opening and closing the claws. In addition to the grapple 20a, the first work tool can be appropriately replaced with a cutter, a breaker, a bucket, or other work tools according to the work content.

また、揺動シリンダ９ａは、ボトム側がピン３１ａ（図２参照）によって旋回体３の左側外縁部分に設けられたブラケット３３ａ（図２参照）と結合され、ロッド側がピン３２ａによって取付体７ａの左側（外側）に設けられたブラケット３４ａと結合されている。前述したように旋回体３の左右方向の幅寸法を旋回中心Ｃの前側が後側に対して狭くなるように形成することで、ブラケット３３ａ，３４ａやこれらブラケット３３ａ，３４ａと結合される揺動シリンダ９ａが旋回体３の幅寸法内に収まるようになっている。   Further, the swing cylinder 9a is coupled to a bracket 33a (see FIG. 2) provided on the left outer edge portion of the swing body 3 by a pin 31a (see FIG. 2) on the bottom side, and on the left side of the mounting body 7a by a pin 32a on the rod side. It is combined with a bracket 34a provided on the (outside). As described above, the width of the swivel body 3 in the left-right direction is formed so that the front side of the swivel center C is narrower than the rear side, thereby swinging the brackets 33a and 34a and the brackets 33a and 34a. The cylinder 9 a is adapted to fit within the width dimension of the swing body 3.

第２作業フロント装置Ｂは、第１作業フロント装置Ａと同じく多関節構造のスイング式作業腕で、運転室４を挟んで第１作業フロント装置Ａと対称に設けられている。つまり、第２作業フロントＢの構成は第１作業フロントＡとほぼ左右対称の関係にあり、第１作業フロントＡの対応の各部材の符号の添字「ａ」を「ｂ」として示すこととして、ここでは説明を省略する。   The second work front device B is a swing-type work arm having an articulated structure similar to the first work front device A, and is provided symmetrically with the first work front device A across the operator cab 4. That is, the configuration of the second work front B is substantially symmetrical with the first work front A, and the subscript “a” of the corresponding member of the first work front A is indicated as “b”. The description is omitted here.

運転室４は、いわゆるキャブタイプの運転室であり、オペレータが着座する運転席５（図１参照）を内部に備えており、少なくとも左右のいずれか一方の側面（本例では左側面）にオペレータが乗降するための乗降口４Ｂを有している。乗降口４Ｂは運転室４の側面の前方寄りの位置に設置されており、乗降用の開閉扉４Ａによって開閉される。運転室４の前面は運転席５からのオペレータの前方の視界を確保するためにフロントガラスで覆われている。また、運転席５は、図２に示すように旋回体３の旋回中心Ｃの近傍に前方を向けて配設されており、旋回動作時に着座したオペレータにかかる慣性力が抑えられ、なおかつ第１及び第２作業フロント装置Ａ，Ｂがオペレータの視界の左右にくるので第１及び第２作業フロント装置Ａ，Ｂを同時操作するのに適している。なお、運転室４の乗降口４Ｂ側（本例では左側）の側方には構成要素が設けられておらず開閉扉４Ａが回動する可動空間Ｓ１が創出されており、旋回体３上の可動空間Ｓ１の下方には上面がほぼ水平な足場Ｓ２が確保されている。本実施形態において、足場Ｓ２は、旋回体３の前半部分の前方に向かって狭まる形状に倣い、上から見て後方に向かって左右方向の幅が広がるように形成されている。   The driver's cab 4 is a so-called cab type operator's cab, and has a driver's seat 5 (see FIG. 1) on which an operator is seated, and at least one of the left and right side surfaces (the left side surface in this example). Has an entrance 4B for getting on and off. The entrance / exit 4B is installed at a position closer to the front side of the side surface of the cab 4 and is opened and closed by an opening / closing door 4A. The front surface of the driver's cab 4 is covered with a windshield in order to secure a field of view in front of the operator from the driver's seat 5. Further, as shown in FIG. 2, the driver's seat 5 is disposed in the vicinity of the turning center C of the revolving structure 3 so as to face forward, and the inertial force applied to the operator seated during the turning operation is suppressed, and the first And since the second work front devices A and B come to the left and right of the operator's field of view, it is suitable for simultaneously operating the first and second work front devices A and B. It should be noted that a component space is not provided on the side of the cab 4 on the side of the entrance / exit 4B (left side in this example), and a movable space S1 in which the opening / closing door 4A rotates is created. A scaffold S2 having a substantially horizontal upper surface is secured below the movable space S1. In the present embodiment, the scaffold S2 is formed so that the width in the left-right direction widens toward the rear as seen from above, following the shape narrowing toward the front of the front half of the revolving structure 3.

開閉扉４Ａは、乗降口４Ｂの後縁部にヒンジ（不図示）を介して回動可能に連結されている。このとき、運転室４は上から見てほぼ矩形であって、左右の側面は前後に延びている。そして、前述した可動空間Ｓ１の広さは開閉扉４Ａの回動範囲が約９０度となる程度に設定されており、開閉扉４Ａをほぼ全解放したとき（全開にして開閉扉４Ａのヒンジと反対側の前縁部を旋回体３の側方（左方向）に向けたとき、すなわち開閉扉４Ａをほぼ真横に開いたとき）、開放した開閉扉４Ａが燃料タンク４６（後述）を含むパワーユニット室Ｐに当接又は近接するように構成されている。また、図２に示すように、開閉扉４Ａの回動領域Ｓ３は、旋回体３の最大旋回半径（本例の場合後端部の旋回半径）Ｒの内側に収まっている。足場Ｓ２の高さは、運転室４内のフロア面、或いは乗降口４Ｂの下縁部と同程度である。   The open / close door 4A is rotatably connected to the rear edge of the entrance / exit 4B via a hinge (not shown). At this time, the cab 4 is substantially rectangular when viewed from above, and the left and right side surfaces extend back and forth. The width of the movable space S1 described above is set to such an extent that the opening / closing door 4A has a rotation range of about 90 degrees, and when the opening / closing door 4A is almost fully opened (with the hinge of the opening / closing door 4A fully opened). When the front edge of the opposite side is directed to the side (left direction) of the swivel body 3, that is, when the opening / closing door 4A is opened almost right side), the opened opening / closing door 4A includes a fuel tank 46 (described later). It is comprised so that it may contact | abut or adjoin to the chamber P. FIG. Further, as shown in FIG. 2, the turning area S3 of the opening / closing door 4A is within the maximum turning radius R (in this example, the turning radius of the rear end portion) R of the revolving structure 3. The height of the scaffold S2 is approximately the same as the floor surface in the cab 4 or the lower edge of the entrance / exit 4B.

前述したパワーユニット室Ｐの内部には、図２に示すように、エンジン４０と、エンジン４０により駆動される油圧ポンプ４１と、エンジン４０を冷却するラジエータ４２と、エンジン４０からの排気を消音するマフラ４３と、バッテリ４４と、油圧ポンプ４１で加圧される作動油を貯留する作動油タンク４５と、エンジン４０で燃焼する燃料を貯留する燃料タンク４６と、油圧ポンプ４１で加圧された圧油の流れを制御するコントロールバルブ４７とが配設されている。作動油タンク４５と燃料タンク４６の容積は同程度である。   As shown in FIG. 2, the power unit chamber P described above includes an engine 40, a hydraulic pump 41 driven by the engine 40, a radiator 42 that cools the engine 40, and a muffler that silences exhaust from the engine 40. 43, a battery 44, a hydraulic oil tank 45 that stores hydraulic oil pressurized by the hydraulic pump 41, a fuel tank 46 that stores fuel combusted by the engine 40, and pressurized oil pressurized by the hydraulic pump 41 And a control valve 47 for controlling the flow of the air. The volumes of the hydraulic oil tank 45 and the fuel tank 46 are approximately the same.

エンジン４０は旋回体３の左右方向（幅方向）のほぼ中心に配設されている。油圧ポンプ４１は、エンジン４０の右側に取り付けられており、エンジン４０の駆動力で駆動される。ラジエータ４２は、エンジン４０を挟んで油圧ポンプ４１の反対側（すなわちエンジン４０の左側）に配設されている。マフラ４３は、エンジン４０の上部に配設されている。バッテリ４４は、ラジエータ４２の左側に配設されている。   The engine 40 is disposed substantially at the center in the left-right direction (width direction) of the revolving structure 3. The hydraulic pump 41 is attached to the right side of the engine 40 and is driven by the driving force of the engine 40. The radiator 42 is disposed on the opposite side of the hydraulic pump 41 (that is, the left side of the engine 40) with the engine 40 interposed therebetween. The muffler 43 is disposed on the upper portion of the engine 40. The battery 44 is disposed on the left side of the radiator 42.

それに対し、作動油タンク４５は、油圧ポンプ４１の前方（旋回体３の前後方向中央付近）で運転室４の後方寄りの部分の右側の位置に、燃料タンク４６は、バッテリ４４の前方（旋回体３の前後方向中央付近）で運転室４の後方寄りの部分の左側の位置にそれぞれ配設されている。これら作動油タンク４５及び燃料タンク４６は、互いに容積がほぼ等しく、例えば図２に示したように運転室４を挟んで旋回体３の左右方向（幅方向）に略対称となるように旋回体３の左右の側面近傍のスペースを有効に活用して配設されている。燃料タンク４６は、開閉扉４Ａの可動空間Ｓ１及び足場Ｓ２の後方に位置している。また、パワーユニット室Ｐにおける作動油タンク４５や燃料タンク４６の収容部の側面は、作動油タンク４５及び燃料タンク４６の各給油口４５ａ，４６ａよりも前方部分が前方に向かって運転室４側に傾斜しており、上から見て足場Ｓ２に連続した形状をなしている。なお、本実施形態において、パワーユニット室Ｐの燃料タンク４６を収容する燃料タンク収容部Ｐａ（図３参照）には、例えば燃料タンク４６の前側に制御盤等の他の機器を収容するスペース４６Ａが適当に確保されており、この収容スペース４６Ａが足場Ｓ２と燃料タンク４６の間に介在している。   On the other hand, the hydraulic oil tank 45 is positioned in front of the hydraulic pump 41 (near the center in the front-rear direction of the swivel body 3) on the right side of the portion closer to the rear of the cab 4 and the fuel tank 46 is positioned in front of the battery 44 (swirl). (Near the center in the front-rear direction of the body 3) at the positions on the left side of the portion closer to the rear of the cab 4 respectively. The hydraulic oil tank 45 and the fuel tank 46 have substantially the same volume. For example, as shown in FIG. 2, the swivel body is substantially symmetrical in the left-right direction (width direction) of the swivel body 3 with the cab 4 interposed therebetween. The space in the vicinity of the left and right side surfaces 3 is used effectively. The fuel tank 46 is located behind the movable space S1 and the scaffold S2 of the opening / closing door 4A. Further, the side surfaces of the accommodating portions of the hydraulic oil tank 45 and the fuel tank 46 in the power unit chamber P are forwardly forward of the respective oil supply ports 45a and 46a of the hydraulic oil tank 45 and the fuel tank 46 toward the cab 4 side. It is inclined and has a shape continuous to the scaffold S2 when viewed from above. In the present embodiment, the fuel tank housing portion Pa (see FIG. 3) for housing the fuel tank 46 of the power unit chamber P has a space 46A for housing other equipment such as a control panel on the front side of the fuel tank 46, for example. The housing space 46A is interposed between the scaffold S2 and the fuel tank 46.

前出のコントロールバルブ４７は、作動油タンク４５の前方（旋回体３の旋回中心Ｃより前方）で運転室４の右側の位置に配設されている。コントロールバルブ４７は、第１作業フロント装置Ａ、第２作業フロント装置Ｂの各アクチュエータや旋回モータ４８、走行体１の走行用油圧モータ１ｅへそれぞれ供給される油圧ポンプ４１からの圧油の流れを制御する。   The above-described control valve 47 is disposed at a position on the right side of the cab 4 in front of the hydraulic oil tank 45 (in front of the turning center C of the turning body 3). The control valve 47 controls the flow of pressure oil from the hydraulic pump 41 supplied to the actuators of the first work front device A and the second work front device B, the turning motor 48, and the traveling hydraulic motor 1e of the traveling body 1, respectively. Control.

上記構成の本実施形態の双腕型作業機械１００によれば、運転室４の側方に乗降口４Ｂを設け、その側方に足場Ｓ２を設けたことにより、走行体１及び足場Ｓ２を利用して容易に運転室４に乗降することができる。加えて、開閉扉４Ａを閉じた状態で足場Ｓ２に立つと、開閉扉４Ａの可動空間Ｓ１及び足場Ｓ２の後方に位置する燃料タンク４６の給油口４６ａに容易に手をのばすことができるので、足場Ｓ２を利用して燃料タンク４６への給油作業を容易にすることができる。また、足場Ｓ２を設けたことによって運転室４の側方に空間（可動空間Ｓ１）が確保されるので、乗降口４Ｂに開閉扉４Ａを設けた場合、開閉扉４Ａを可動空間Ｓ１で回動させることができ、開閉扉４Ａの開閉動作もスムーズに行える。   According to the double-arm type work machine 100 of the present embodiment configured as described above, the traveling body 1 and the scaffold S2 are used by providing the entrance 4B on the side of the cab 4 and the scaffold S2 on the side. Thus, it is possible to easily get on and off the cab 4. In addition, when standing on the scaffolding S2 with the door 4A closed, it is possible to easily reach the movable space S1 of the door 4A and the fuel filler 46a of the fuel tank 46 located behind the scaffolding S2. The refueling work to the fuel tank 46 can be facilitated by using the scaffold S2. In addition, since the space (movable space S1) is secured to the side of the cab 4 by providing the scaffold S2, when the opening / closing door 4A is provided at the entrance / exit 4B, the opening / closing door 4A is rotated in the movable space S1. The opening / closing operation of the opening / closing door 4A can be performed smoothly.

また、燃料タンク４６が前方に狭まる形状であることで、燃料タンク４６への給油作業の負担軽減も期待される。すなわち、足場Ｓ２に立った作業者が給油用のタンクや給油ホース等の給油手段を機体側方（運転室４と反対側）に構え、給油手段を持ち上げて給油口４６ａのところに持っていく際、燃料タンク４６の側部が足場Ｓ２に立つ作業者の近傍で運転室４側に退避しているので、作業者が給油手段を持ち上げるスペースが確保され、給油手段を給油口４６ａまで持っていき易い。   In addition, since the fuel tank 46 has a shape that narrows forward, a reduction in the burden of refueling work on the fuel tank 46 is also expected. That is, an operator standing on the scaffolding S2 holds oil supply means such as a fuel supply tank and oil supply hose on the side of the machine body (on the side opposite to the cab 4), and lifts the oil supply means to the oil supply port 46a. At this time, since the side portion of the fuel tank 46 is retracted to the cab 4 side in the vicinity of the worker standing on the scaffold S2, a space for the worker to lift the fuel supply means is secured, and the fuel supply means is held to the fuel supply port 46a. Easy to go.

また、開閉扉４Ａの回動範囲が約９０度となるように可動空間Ｓ１の広さを設定したことにより、運転室４の側方の燃料タンク４６の容量が乗降し易さとのバランスで極力大きく確保されている。すなわち、運転室４の側面全面の傍らに可動空間Ｓ１及び足場Ｓ２を設け開閉扉４Ａが１８０度回動可能とし、開閉扉４Ａをより自由に開放させられる構成とした場合、その分燃料タンク４６の前面位置は後方に移動する。この場合、パワーユニット室Ｐの後部エリアにはエンジン４０等の必要機器が収容されており、燃料タンク４６の後端位置はあまり後方に移動させられないので、燃料タンク４６の前端位置を後方に下げると燃料タンク４６の容積が自ずと小さくなってしまう。反対に、燃料タンク４６を前方に拡大した場合、開閉扉４Ａの回動範囲が狭まり、運転室４への乗降に支障を来たす。そこで、開閉扉４Ａの回動範囲のうち、搭乗しようとするオペレータが乗降口４Ｂに正対した状態で開閉扉４Ａが乗降口４Ｂに干渉しない範囲は概ね９０度以上である点を考慮すると、真横から乗り込むオペレータが開閉扉４Ａに干渉することなく運転室４に乗り込み易いのは開閉扉４Ａが概ね９０度以上開いているときと考えることができる。したがって、この範囲で最小の９０度に開閉扉４Ａの回動範囲を設定することで、運転室４への乗降性を犠牲にすることなく燃料タンク４６の容積を十分に確保することができる。   Further, by setting the size of the movable space S1 so that the rotation range of the opening / closing door 4A is about 90 degrees, the capacity of the fuel tank 46 on the side of the cab 4 is balanced with the ease of getting on and off as much as possible. Largely secured. That is, when the movable space S1 and the scaffold S2 are provided beside the entire side surface of the cab 4 so that the open / close door 4A can be rotated 180 degrees and the open / close door 4A can be opened more freely, the fuel tank 46 correspondingly. The front position of is moved backward. In this case, necessary devices such as the engine 40 are accommodated in the rear area of the power unit chamber P, and the rear end position of the fuel tank 46 cannot be moved rearward so much, so the front end position of the fuel tank 46 is lowered rearward. As a result, the volume of the fuel tank 46 is naturally reduced. On the contrary, when the fuel tank 46 is expanded forward, the rotation range of the opening / closing door 4A is narrowed, which hinders getting in and out of the cab 4. Therefore, in consideration of the fact that, in the rotation range of the opening / closing door 4A, the range in which the opening / closing door 4A does not interfere with the entrance / exit 4B in the state where the operator who is going to board is facing the entrance / exit 4B is approximately 90 degrees or more. It can be considered that the operator who gets in from the side easily gets into the cab 4 without interfering with the door 4A when the door 4A is opened approximately 90 degrees or more. Therefore, by setting the rotation range of the opening / closing door 4A to the minimum 90 degrees within this range, the volume of the fuel tank 46 can be sufficiently secured without sacrificing the ability to get in and out of the cab 4.

また、図２に示すように、開閉扉４Ａの回動領域Ｓ３が旋回体３の最大旋回半径Ｒ内に収まっている、すなわち開閉扉４Ａを開放した際の旋回体３の側方への突出量が最大旋回半径Ｒ内に収まっているので、開閉扉４Ａの開放時に旋回体３を旋回させても旋回体３の旋回半径外の障害物と開閉扉４Ａが干渉し破損することがない。   In addition, as shown in FIG. 2, the turning area S3 of the opening / closing door 4A is within the maximum turning radius R of the revolving structure 3, that is, the protrusion of the revolving structure 3 to the side when the opening / closing door 4A is opened. Since the amount is within the maximum turning radius R, even if the turning body 3 is turned when the opening / closing door 4A is opened, the obstacle outside the turning radius of the turning body 3 and the opening / closing door 4A will not interfere and be damaged.

また、エンジン４０、油圧ポンプ４１、ラジエータ４２、マフラ４３、バッテリ４４をパワーユニット室Ｐ内で旋回体３の幅方向（左右方向）に直線的に配設し、また容積が同程度の作動油タンク４５及び燃料タンク４６をほぼ左右対称の位置関係に配設したことにより、これら各機器による旋回体３の幅方向の重量分布の偏りを抑制することができる。但し、第１及び第２作業フロント装置Ａ，Ｂの大きさや先端の作業具の構成を著しく異なるものとした場合等においては、コントロールバルブ４７を複数に分散して配置したり、カウンタウエイト８の重心を片側にやや偏心させたりする等の工夫が必要な場合もある。   In addition, the engine 40, the hydraulic pump 41, the radiator 42, the muffler 43, and the battery 44 are linearly disposed in the width direction (left-right direction) of the revolving structure 3 in the power unit chamber P, and the hydraulic oil tank having the same volume is provided. By disposing 45 and the fuel tank 46 in a substantially bilaterally symmetrical positional relationship, it is possible to suppress the deviation of the weight distribution in the width direction of the revolving structure 3 due to these devices. However, when the sizes of the first and second work front devices A and B and the configuration of the work implement at the tip are significantly different, the control valves 47 are distributed in a plurality of positions, or the counterweight 8 In some cases, it is necessary to devise a method such as slightly decentering the center of gravity on one side.

さらには、作動油タンク４５を油圧ポンプ４１とともにパワーユニット室Ｐ内の右側のスペースに配設したことにより、作動油タンク４５と油圧ポンプ１１との距離が短縮され、作動油タンク４５と油圧ポンプ４１との間の油圧配管を短くすることができる。また、コントロールバルブ４７を油圧ポンプ４１や作動油タンク４５等の近傍に配置することで、油圧配管の管摩擦によるロス（圧力損失）を軽減することができ、エネルギ効率を向上させることもできる。   Furthermore, the hydraulic oil tank 45 and the hydraulic pump 41 are disposed in the right space in the power unit chamber P, whereby the distance between the hydraulic oil tank 45 and the hydraulic pump 11 is shortened, and the hydraulic oil tank 45 and the hydraulic pump 41 are reduced. The hydraulic piping between the two can be shortened. Further, by disposing the control valve 47 in the vicinity of the hydraulic pump 41, the hydraulic oil tank 45, etc., loss (pressure loss) due to pipe friction of the hydraulic piping can be reduced, and energy efficiency can be improved.

なお、本実施形態では、燃料タンク収容部Ｐａにおける燃料タンク４６の前側に制御盤等の必要機器を収容するスペース４６Ａを確保する構成と説明したが、図７に示したように燃料タンク４６と収容スペース４６Ａの位置を入れ替えることもできるし、図８に示したように収容スペース４６Ａを他の場所に移して燃料タンク収容部Ｐａの占める領域全体を燃料タンク４６とすることもできる。   In the present embodiment, the configuration has been described in which the space 46A for storing necessary equipment such as a control panel is secured on the front side of the fuel tank 46 in the fuel tank housing portion Pa. However, as shown in FIG. The position of the storage space 46A can be changed, or the storage space 46A can be moved to another place as shown in FIG.

また、足場Ｓ２を前方に向かって狭まる構成としたが、例えばパワーユニット室Ｐの左端と同程度まで左方向に拡大し（機体幅内で拡大し）、揺動シリンダ９ａの上部を覆うような構成とすることもできる。また、乗降口４Ｂ及び足場Ｓ２を運転室４の左側に設けた場合を例に挙げて説明したが、これらはパワーユニット室Ｐの機器配置を左右逆転することによって右側に移設することもできるし、場合によってはコントロールバルブ４７を後方に移設する等して左右両側に設けることも考えられる。さらには、作業フロント装置Ａ，Ｂのうち、例えば開閉扉４Ａと反対側の作業フロント装置の基部は運転室４の前面よりも後方に設けることができる。また、開閉扉４Ａが後縁部を支点に開閉する構成としたが、開閉扉４Ａは前縁部を支点に開閉する構成とすることもできるし、ハッチバック式にすることも可能である。また、開閉扉４Ａを後方、場合によっては前方にスライドさせて開閉する構成とすることもできる。   Further, the scaffold S2 is configured to narrow toward the front. For example, the scaffold S2 is expanded leftward to the same extent as the left end of the power unit chamber P (enlarged within the body width) and covers the upper portion of the swing cylinder 9a. It can also be. Moreover, although the case where the entrance / exit 4B and the scaffolding S2 are provided on the left side of the cab 4 is described as an example, these can be moved to the right side by reversing the device arrangement of the power unit room P, In some cases, the control valve 47 may be provided on both the left and right sides by moving rearward. Furthermore, of the work front devices A and B, for example, the base of the work front device on the side opposite to the door 4 </ b> A can be provided behind the front surface of the cab 4. Further, although the opening / closing door 4A is configured to open and close with the rear edge portion as a fulcrum, the opening / closing door 4A may be configured to open and close with the front edge portion as a fulcrum, or may be a hatchback type. Moreover, it can also be set as the structure which opens and closes 4 A of opening-and-closing doors back, and may slide to the front depending on the case.

さらには、第１及び第２作業フロント装置Ａ，Ｂをともにスイング式の作業フロント装置としたが、いずれか一方（足場Ｓ２と反対側）を一般の油圧ショベルのような非スイング式の作業フロント装置に代えることもできる。非スイング式の作業フロント装置の基部は、機体の安定性を高めるために旋回中心Ｃに近付け、運転席５の側方位置に配置することが望ましい。この場合、コントロールバルブ４７を例えば運転席４の後方に移設し、運転室４への横からの乗降の邪魔にならないように、他方側の作業フロント装置（スイング式の作業フロント装置）のみの基部を運転席４の前面よりも前方側に設け、このスイング式作業フロント装置側に乗降口４Ｂを設けることで、運転室４に対して機体側方からの乗降が可能となる。   Furthermore, although the first and second work front devices A and B are both swing type work front devices, either one (the side opposite to the scaffold S2) is a non-swing type work front such as a general excavator. It can also be replaced by a device. It is desirable that the base of the non-swing type work front device is disposed close to the turning center C and positioned at the side of the driver's seat 5 in order to improve the stability of the machine body. In this case, for example, the control valve 47 is moved to the rear of the driver's seat 4 and the base of only the other work front device (swing-type work front device) so as not to obstruct getting in and out of the driver's cab 4 from the side. Is provided on the front side of the front surface of the driver's seat 4 and the entrance / exit 4B is provided on the swing-type work front device side.

本発明の一実施の形態に係る双腕型作業機械の全体構成を表す斜視図である。It is a perspective view showing the whole structure of the double arm type working machine which concerns on one embodiment of this invention. 本発明の一実施の形態に係る双腕型作業機械に備えられた旋回体の透視平面図である。It is a see-through top view of the revolving structure provided in the double arm type work machine concerning one embodiment of the present invention. 本発明の一実施の形態に係る双腕型作業機械の平面図である。It is a top view of the double arm type working machine concerning one embodiment of the present invention. 本発明の一実施の形態に係る双腕型作業機械の左側面図である。It is a left view of the double arm type working machine which concerns on one embodiment of this invention. 本発明の一実施の形態に係る双腕型作業機械の右側面図である。It is a right view of the double arm type working machine which concerns on one embodiment of this invention. 本発明の一実施の形態に係る双腕型作業機械の正面図である。It is a front view of the double arm type work machine concerning one embodiment of the present invention. 本発明の一実施の形態の他の構成例に係る双腕型作業機械の平面図である。It is a top view of the double arm type working machine which concerns on the other structural example of one embodiment of this invention. 本発明の一実施の形態のさらに他の構成例に係る双腕型作業機械の平面図である。It is a top view of the double arm type working machine which concerns on the further another structural example of one embodiment of this invention.

符号の説明Explanation of symbols

１ 走行体
３ 旋回体
４ 運転室
４Ａ 開閉扉
４Ｂ 乗降口
４６ 燃料タンク
１００ 双腕型作業機械
Ａ 第１作業フロント装置
Ｂ 第２作業フロント装置
Ｓ１ 可動空間
Ｓ２ 足場
Ｓ３ 回動領域
Ｐ パワーユニット室
Ｐａ 燃料タンク収容部
Ｒ 最大旋回半径 DESCRIPTION OF SYMBOLS 1 Traveling body 3 Revolving body 4 Driver's cab 4A Opening / closing door 4B Entrance / exit 46 Fuel tank 100 Double arm type work machine A 1st work front apparatus B 2nd work front apparatus S1 Movable space S2 Scaffolding S3 Turning area P Power unit room Pa Fuel Tank compartment R Maximum turning radius

Claims (3)

走行体と、
前記走行体の上部に旋回可能に設けた旋回体と、
前記旋回体の上部の左右方向の略中央に設けられ、少なくとも左右のいずれか一方に乗降口を有する運転室と、
前記運転室の左右両側に設けられ、そのうちの少なくとも前記運転室の乗降口側に設けた方の基部が前記運転室よりも前方に位置している多関節構造の第１及び第２の作業フロント装置と、
前記旋回体上の前記運転室の前記乗降口側の側方に設けた足場と、
前記旋回体上の前記足場の後方に設けた燃料タンクと
を備えたことを特徴とする双腕型作業機械。 A traveling body,
A swivel body provided on the top of the traveling body so as to be turnable;
A driver's cab provided at the approximate center in the left-right direction of the upper part of the revolving structure, and having a doorway at least on either the left or right;
First and second work fronts of multi-joint structure provided on the left and right sides of the cab, at least a base portion of which is provided on the entrance side of the cab is located in front of the cab Equipment,
A scaffold provided on a side of the driver's cab on the revolving structure on the side of the entrance;
A dual-arm work machine comprising a fuel tank provided behind the scaffold on the revolving structure. 請求項１の双腕型作業機械において、前記乗降口の後縁部にヒンジを介して回動可能に連結された乗降口開閉用の開閉扉をさらに備え、
前記開閉扉を全開放したとき、前記開閉扉が前記燃料タンクを含むパワーユニット室に当接又は近接することを特徴とする双腕型作業機械。 The double-armed work machine according to claim 1, further comprising an opening / closing door for opening / closing an entrance / exit that is rotatably connected to a rear edge portion of the entrance / exit via a hinge,
A double-armed work machine, wherein when the opening / closing door is fully opened, the opening / closing door contacts or is close to a power unit chamber including the fuel tank. 請求項１又は２の双腕型作業機械において、前記開閉扉を開放した際の前記旋回体の側方への突出量は、前記旋回体の最大旋回半径の内側に収まっていることを特徴とする双腕型作業機械。   The double-armed work machine according to claim 1 or 2, wherein the amount of lateral protrusion of the revolving structure when the open / close door is opened is within the maximum revolving radius of the revolving structure. Double-arm work machine.
JP2008212154A 2008-08-20 2008-08-20 Double-armed work machine Expired - Fee Related JP4995786B2 (en)

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