JP2013245506A - Revolving work vehicle - Google Patents

Revolving work vehicle Download PDF

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JP2013245506A
JP2013245506A JP2012121224A JP2012121224A JP2013245506A JP 2013245506 A JP2013245506 A JP 2013245506A JP 2012121224 A JP2012121224 A JP 2012121224A JP 2012121224 A JP2012121224 A JP 2012121224A JP 2013245506 A JP2013245506 A JP 2013245506A
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opening
peripheral edge
closing
door
closing door
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Zenzo Uchida
善三 内田
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Yanmar Co Ltd
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Yanmar Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a revolving work vehicle in which a control lever and an operation pedal are arranged adjacent to the side of an opening/closing door for securing a wider space of an operation part to improve operability while solving such a trouble that the hand and the leg of a worker operating the control lever and the operation pedal hit the opening/closing door.SOLUTION: In a cabin opening/closing door structure for the revolving work vehicle, the operation part is arranged in a cabin mounted on a revolving superstructure, and part of one side wall of the cabin is formed with a door frame body and the opening/closing door closably mounted on the door frame body to allow ride on/off the operation part via the opening/closing door. The opening/closing door includes an outer peripheral edge part for contacting/leaving the door frame body, an inner peripheral edge part formed along the inner periphery of the outer peripheral edge part and draw-molded to be swollen to the lateral side, and a see-through plate set on the inner periphery of the inner peripheral edge part and arranged offset to the further lateral side than the outer peripheral edge part.

Description

本発明は、旋回作業車、詳しくは旋回作業車のキャビンの開閉ドア構造に関する。   The present invention relates to a turning work vehicle, and more particularly to a cabin open / close door structure of a turning work vehicle.

従来、旋回作業車のキャビンの開閉ドア構造の一形態として、特許文献1に開示されたものがある。すなわち、特許文献1に開示された旋回作業車は走行部上に旋回体を旋回自在に設け、旋回体上にキャビンを載設して、キャビン内に運転部を配設している。キャビンは略四角形箱形に形成しており、左側壁は前半部を開閉ドアとなして、開閉ドアを開放することで作業者が運転部に乗降できるようにしている。   Conventionally, there exists what was disclosed by patent document 1 as one form of the door structure of the cabin of a turning work vehicle. That is, in the turning work vehicle disclosed in Patent Document 1, a turning body is provided on a traveling part so as to be turnable, a cabin is placed on the turning body, and a driving part is provided in the cabin. The cabin is formed in a substantially rectangular box shape, and the left side wall has an opening / closing door at the front half, so that an operator can get on and off the driving section by opening the opening / closing door.

開閉ドアは方形に枠組みされたドア枠の高さ方向中間部位に横桟を架設することによって上下開口部を形成し、この上下開口部にガラス,透明樹脂等の透視板を嵌め込んで平板状に形成している。横桟には施錠具を設けている。   The open / close door is formed in a flat shape by installing a horizontal beam in the middle of the height of the door frame that is framed in a rectangular shape, and a see-through plate such as glass or transparent resin is fitted into the upper and lower opening. Is formed. Locks are provided on the side rails.

特開2000−272346JP 2000-272346 A

ところが、旋回半径を小さくすべくコンパクトに形成された旋回体上のキャビンでは、内部の運転部に配設した操作レバーや操作ペダルを開閉ドア側に近接配置することにより、運転部空間を広く確保して操作性を向上させようとすると、開閉ドアが平板状に形成されているため、操作レバーや操作ペダルを操作する作業者の手や足が開閉ドアに当たるという不具合がある。   However, in a cabin on a revolving body that is compactly formed to reduce the turning radius, the operating lever space and operating pedal are placed close to the open / close door side to ensure a large operating space. In order to improve the operability, the open / close door is formed in a flat plate shape, so that there is a problem that the hands and feet of the operator who operates the operation lever and the operation pedal hit the open / close door.

そこで、本発明は、操作レバーや操作ペダルを開閉ドア側に近接配置することで、運転部空間を広く確保して操作性を向上させることができるとともに、操作レバーや操作ペダルを操作する作業者の手や足が開閉ドアに当たるという不具合を解消することができる旋回作業車を提供することを目的とする。   In view of this, the present invention provides an operation lever and an operation pedal close to the opening / closing door side, thereby ensuring a wide driving section space and improving operability, and an operator operating the operation lever and the operation pedal. An object of the present invention is to provide a turning work vehicle that can solve the problem that the hand or foot of the vehicle hits the door.

請求項1記載の発明に係る旋回作業車は、旋回体上に載設したキャビン内に運転部を配設し、キャビンの一側壁の一部をドア枠体とドア枠体に開閉自在に取り付けた開閉ドアとから形成して、開閉ドアを介して運転部への乗降を可能に構成した旋回作業車のキャビンの開閉ドア構造であって、開閉ドアは、ドア枠体に接離する外周縁部と、外周縁部の内周に沿わせて形成するとともに外側方へ膨出状に絞り成形した内周縁部と、内周縁部の内周に張設して外周縁部よりも外側方へオフセットさせて配置した透視板とを具備することを特徴とする。   According to a first aspect of the present invention, there is provided a turning work vehicle in which a driving unit is disposed in a cabin mounted on a turning body, and a part of one side wall of the cabin is attached to the door frame body and the door frame body so as to be freely opened and closed. The opening / closing door structure of the cabin of the swivel work vehicle, which is formed from the opening / closing door and configured to be able to get on and off the driving unit via the opening / closing door, the opening / closing door being an outer peripheral edge that contacts and separates from the door frame And an inner peripheral edge formed along the inner periphery of the outer peripheral edge and squeezed outwardly, and stretched outward from the outer peripheral edge by being stretched on the inner periphery of the inner peripheral edge And a see-through plate arranged in an offset manner.

かかる旋回作業車では、透視板を外周縁部よりも外側方へオフセットさせて配置しているため、操作レバーや操作ペダルを開閉ドア側に近接配置した場合にも、操作レバーや操作ペダルを操作する作業者の手や足が開閉ドアに当たるという不具合を解消することができる。その結果、運転部空間を広く確保して操作性を向上させることができる。ここで、透視板としては内部から外部が透視可能な素材で形成されたものであればよく、例えば、ガラス板やアクリル板を使用することができる。   In such a turning work vehicle, since the see-through plate is arranged to be offset outward from the outer peripheral edge, the operation lever and the operation pedal can be operated even when the operation lever and the operation pedal are arranged close to the opening / closing door side. The problem that the operator's hand or foot hits the open / close door can be solved. As a result, it is possible to secure a wide driving section space and improve operability. Here, as a see-through plate, what is necessary is just to be formed with the raw material which can see the outside from the inside, for example, a glass plate and an acrylic board can be used.

請求項2記載の発明に係る旋回作業車は、請求項1記載の発明に係る旋回作業車であって、内周縁部の前側縁部ないしは後側縁部の中途部に把手支持体を張り出し状に延設するとともに、把手支持体の外側面には透視板よりも内方にオフセットさせて凹面部を形成し、凹面部には開閉ドアを開閉操作する外側開閉把手と開放した開閉ドアを仮止めするストライカを設けたことを特徴とする。   A turning work vehicle according to a second aspect of the present invention is the turning work vehicle according to the first aspect of the present invention, wherein a handle support is overhanging in the middle of the front edge or rear edge of the inner peripheral edge. In addition, the outer surface of the handle support is offset inward from the see-through plate to form a concave surface portion, and the concave surface portion is provided with an outer open / close handle for opening and closing the open / close door and an open open / close door. A striker for stopping is provided.

かかる旋回作業車では、透視板よりも内方にオフセットさせて形成した把手支持体の外側面の凹面部に、外側開閉把手とストライカを設けているため、外側開閉把手とストライカの外側方への突出量を軽減させることができる。そのため、旋回体の旋回半径内に外側開閉把手とストライカを堅実に配設することができて、旋回体の旋回時に外側開閉把手とストライカが他物と衝突して損傷等されるのを防止することができる。また、開閉ドアを開放した際には、外側開閉把手とストライカの外側方への突出量を軽減させることができるため、開放した開閉ドアをキャビンの側壁に可及的に近接配置させることができて、開放した開閉ドアの旋回体の旋回半径内ないしは外方への張出量を軽減することができる。したがって、旋回体の旋回時に開放した開閉ドアが他物と干渉して損傷等される虞が低減できる。   In such a turning work vehicle, since the outer opening / closing handle and the striker are provided on the concave surface portion of the outer surface of the handle support formed by being offset inward from the see-through plate, the outer opening / closing handle and the striker are moved outward. The amount of protrusion can be reduced. Therefore, the outer opening / closing handle and the striker can be firmly disposed within the turning radius of the revolving structure, and the outer opening / closing handle and the striker are prevented from colliding with other objects and being damaged when the revolving structure is turned. be able to. In addition, when the open / close door is opened, the amount of outward protrusion of the outer open / close handle and striker can be reduced, so that the open open / close door can be placed as close as possible to the side wall of the cabin. Thus, the amount of protrusion of the opened opening / closing door within the turning radius or outward of the turning body can be reduced. Therefore, it is possible to reduce the possibility that the open / close door that is opened when the revolving structure is turned will interfere with other objects and be damaged.

請求項3記載の発明に係る旋回作業車は、請求項2記載の発明に係る旋回作業車であって、把手支持体は左右方向に扁平な容器状に形成して、把手支持体の外側面に形成した凹面部に外側開閉把手を設ける一方、把手支持体の内側面に内側開閉把手を設けて、把手支持体の内部に両内・外側開閉把手の内・外側ロック・解除機構部を収容して配置したことを特徴とする。   A turning work vehicle according to a third aspect of the invention is the turning work vehicle according to the second aspect of the invention, wherein the handle support is formed in a container shape that is flat in the left-right direction, and the outer surface of the handle support. The inside opening / closing handle is provided on the inside surface of the handle support, and the inside / outside lock / release mechanism of both inside / outside opening / closing handles is accommodated inside the handle support. It is characterized by having arranged.

かかる旋回作業車では、左右方向に扁平な容器状に形成した把手支持体の内部に開閉ドアを開閉操作する内・外側開閉把手の内・外側ロック・解除機構部を収容して配置しているため、開閉ドアに把手支持体を介して内・外側開閉把手と内・外側ロック・解除機構部をコンパクトに配置して、これらが運転部の操作に支障とならないようにすることができる。   In such a turning work vehicle, the inside / outside lock / release mechanism for opening / closing the opening / closing door is accommodated and arranged inside the handle support formed in a container shape that is flat in the left-right direction. The inner / outer opening / closing handle and the inner / outer lock / release mechanism part can be compactly arranged on the opening / closing door via the handle support so that they do not hinder the operation of the operating part.

本発明によれば、操作レバーや操作ペダルを開閉ドア側に近接配置することで、運転部空間を広く確保して操作性を向上させることができるとともに、操作レバーや操作ペダルを操作する作業者の手や足が開閉ドアに当たるという不具合を解消することができる。   According to the present invention, by arranging the operation lever and the operation pedal close to the opening / closing door side, it is possible to secure a wide driving section space and improve the operability, and to operate the operation lever and the operation pedal. It is possible to eliminate the problem that the hand or foot of the hand hits the door.

本発明に係る旋回作業車(掘削作業車)の前面側斜視図。The front side perspective view of the turning work vehicle (excavation work vehicle) which concerns on this invention. 本発明に係る旋回作業車(掘削作業車)の後面側斜視図。The rear side perspective view of the turning work vehicle (excavation work vehicle) which concerns on this invention. 本発明に係る旋回作業車(掘削作業車)の左側面図。The left view of the turning work vehicle (excavation work vehicle) which concerns on this invention. 本発明に係る旋回作業車(掘削作業車)の右側面図。The right view of the turning work vehicle (excavation work vehicle) which concerns on this invention. 本発明に係る旋回作業車(掘削作業車)の正面図。The front view of the turning work vehicle (excavation work vehicle) which concerns on this invention. 本発明に係る旋回作業車(掘削作業車)の背面図。The rear view of the turning working vehicle (excavation working vehicle) which concerns on this invention. 本発明に係る旋回作業車(掘削作業車)の平面図。The top view of the turning working vehicle (excavation working vehicle) which concerns on this invention. キャビンの全面面側斜視図。The whole surface side perspective view of a cabin. キャビンの左側面図。The left view of a cabin. キャビンの右側面図。The right view of a cabin. キャビンの正面図。The front view of a cabin. キャビンの背面図。The rear view of a cabin. キャビンの平面図。The top view of a cabin. 旋回体上に載設したキャビンの左側面図。The left view of the cabin mounted on the turning body. 旋回体上に載設したキャビンの開閉ドアを開放した左側面説明図。Explanatory drawing of the left side which open | released the opening / closing door of the cabin mounted on the turning body. 旋回体上に載設したキャビンの開閉ドアを開放した平面説明図。The plane explanatory view which opened the opening-and-closing door of the cabin laid on the revolving structure. 開閉ドアを開放状態で仮止めした平面説明図。Plane explanatory drawing which temporarily fixed the opening-and-closing door in the open state. 開閉ドアの断面正面説明図。Cross-sectional front explanatory drawing of an opening-and-closing door. 運転部の平面断面説明図。Plan sectional explanatory drawing of a driving | operation part. 開閉ドアの正面図。The front view of an opening-and-closing door. 図20のI-I線断面図。The II sectional view taken on the line of FIG. 図20のII-II線断面図。The II-II sectional view taken on the line of FIG.

以下に、本発明の実施形態を、図面を参照しながら説明する。図1〜図7に示すAは本発明に係る旋回作業車としての掘削作業車である。   Embodiments of the present invention will be described below with reference to the drawings. 1 to 7 is an excavation work vehicle as a turning work vehicle according to the present invention.

[掘削作業車全体の概要説明]
掘削作業車Aは、図1〜図7に示すように、自走可能な走行機体1と、走行機体1に取り付けた作業部としての掘削部2と排土部3とから構成している。本実施形態では作業部の先端部に作業用アタッチメントとして掘削用のバケット13を装着して掘削部2となしている。
[Overview of overall excavation work vehicle]
As shown in FIGS. 1 to 7, the excavation work vehicle A includes a traveling machine body 1 capable of self-propelling, an excavation part 2 as a working part attached to the traveling machine body 1, and a soil discharging part 3. In the present embodiment, the excavating bucket 13 is attached as a working attachment to the tip of the working unit to form the excavating unit 2.

走行機体1は、左右一対のクローラ式の走行部4,4をそれぞれ正逆回転駆動させることで、前後方向に直進走行することも、また、前後左右方向に旋回走行することも、また、左・右側走行部4,4を相互に反対方向に回転駆動させて急旋回させることも可能となしている。走行部4,4間には基台5を介設し、基台5上に旋回体6を旋回自在に載設している。旋回体6は、中央部の上下方向の軸線廻りに左右いずれの方向にも旋回作動可能となしている。旋回体6は走行部4,4の左右側幅(左側走行部4の外側端縁部と右側走行部4の外側端縁部との間隔)内で旋回可能な平面視略円板状に形成している。旋回体6上には、図19に示すように、前半部に運転部7とタンク部8を配設する一方、後半部に機能部9を配設しており、運転部7と機能部9は後述するキャビン30により囲繞している。旋回体6の前端部の一側寄り(本実施形態では右側寄り)位置には掘削部ステー10を前方へ突設して、掘削部ステー10に掘削部2の基端部を枢支して取り付けている。基台5には、左右一対の走行部4,4間において、排土部3を取り付けている。   The traveling machine body 1 can move straight forward and backward by turning the pair of left and right crawler-type traveling parts 4 and 4 forward and backward, respectively, and can also turn and turn in the front and rear and left and right directions. -It is also possible to rotate the right traveling parts 4, 4 in directions opposite to each other to make a sharp turn. A base 5 is interposed between the traveling units 4, 4, and a revolving body 6 is rotatably mounted on the base 5. The swivel body 6 is capable of swiveling in either the left or right direction around the vertical axis of the central portion. The swivel body 6 is formed in a substantially disc shape in plan view that can swivel within the left and right widths of the travel parts 4, 4 (the distance between the outer edge of the left travel part 4 and the outer edge of the right travel part 4). doing. On the revolving body 6, as shown in FIG. 19, the operation part 7 and the tank part 8 are disposed in the first half part, and the function part 9 is disposed in the second half part, and the operation part 7 and the function part 9 are disposed. Is enclosed by a cabin 30 described later. The excavation part stay 10 protrudes forward at a position near one side (in the present embodiment, right side) of the revolving body 6, and the base end part of the excavation part 2 is pivotally supported by the excavation part stay 10. It is attached. The earth removal part 3 is attached to the base 5 between the pair of left and right traveling parts 4, 4.

掘削部2は、ブーム11とアーム12とバケット13とこれらを回動作動させるスイングシリンダ14とブームシリンダ15とアームシリンダ16とバケットシリンダ17を備えている。   The excavation unit 2 includes a boom 11, an arm 12, a bucket 13, a swing cylinder 14, a boom cylinder 15, an arm cylinder 16, and a bucket cylinder 17 that rotate them.

旋回体6の前端部の右側寄り位置に突設した掘削部ステー10には、図4に示すように、揺動体18を上下方向に軸線を向けた枢軸23により枢支して、枢軸23を中心にして揺動体体18を左右揺動自在に取り付けている。旋回体6の右側中途部と揺動体18の右側前部との間には前後方向に伸縮作動するスイングシリンダ14を介設して、スイングシリンダ14の伸縮作動に連動して揺動体18がスイング(左右揺動)作動するようにしている。   As shown in FIG. 4, the excavation part stay 10 projecting to the right side of the front end portion of the revolving unit 6 is pivotally supported by a pivot 23 whose axis is directed in the vertical direction. A rocking body 18 is attached to the center so as to be able to rock right and left. A swing cylinder 14 that expands and contracts in the front-rear direction is interposed between the right middle part of the swing body 6 and the right front part of the swing body 18, and the swing body 18 swings in conjunction with the expansion and contraction operation of the swing cylinder 14. (Swivel from side to side) to operate.

揺動体18には、側面視「へ」の字状に屈曲して上下方向に伸延するブーム11の基端部を左右方向に軸線を向けた第1枢軸19により枢支して、第1枢軸19を中心にしてブーム11を上下回動自在に取り付けている。揺動体18の前端部とブーム11の前面中途部との間には上下方向に伸縮作動するブームシリンダ15を介設して、ブームシリンダ15の伸縮作動に連動してブーム11が上下回動作動するようにしている。   The rocking body 18 is pivotally supported by a first pivot 19 that is bent in the shape of a “he” in a side view and extends in the vertical direction by a first pivot 19 having an axis line in the left-right direction. A boom 11 is attached so as to be pivotable up and down about 19. A boom cylinder 15 that extends and contracts in the vertical direction is interposed between the front end portion of the rocking body 18 and the middle part of the front surface of the boom 11, and the boom 11 is vertically rotated in conjunction with the expansion and contraction operation of the boom cylinder 15. Like to do.

ブーム11の先端部には、上下方向に伸延するアーム12の基端部を、左右方向に軸線を向けた第2枢軸20により枢支して、第2枢軸20を中心にしてアーム12を前後回動自在(上下回動自在)に取り付けている。ブーム11の上面中途部に取り付けた第1シリンダ取付体21と、アーム12の前面基端部に取り付けた第2シリンダ取付体22との間には前後方向に伸延作動するアームシリンダ16を介設して、アームシリンダ16の伸縮作動に連動してアーム12が前後回動作動するようにしている。   The base end portion of the arm 12 extending in the vertical direction is pivotally supported at the distal end portion of the boom 11 by the second pivot 20 having the axis line in the left-right direction, and the arm 12 is moved back and forth around the second pivot 20. It is attached so that it can rotate freely (up and down). An arm cylinder 16 extending in the front-rear direction is interposed between the first cylinder mounting body 21 attached to the middle part of the upper surface of the boom 11 and the second cylinder mounting body 22 attached to the front base end of the arm 12. Thus, the arm 12 is rotated back and forth in conjunction with the expansion and contraction operation of the arm cylinder 16.

アーム12の先端部には、バケット13の基部を左右方向に軸線を向けた第3枢軸25により枢支して、第3枢軸25を中心にしてバケット13を前後回動自在(上下回動自在)に取り付けている。アーム12の先端部とバケット13の基部との間にはバケットリンク24を介設して、バケットリンク24とアーム12の第2シリンダ取付体22との間には上下方向に伸延作動するバケットシリンダ17を介設して、バケットシリンダ17の伸縮作動に連動してバケット13が前後回動(上下回動)作動するようにしている。   At the tip of the arm 12, the base of the bucket 13 is pivotally supported by a third pivot 25 whose axis is directed in the left-right direction, and the bucket 13 is pivotable back and forth around the third pivot 25 (up and down pivotable). ). A bucket link 24 is provided between the tip of the arm 12 and the base of the bucket 13, and a bucket cylinder that extends vertically between the bucket link 24 and the second cylinder mounting body 22 of the arm 12. 17, the bucket 13 is operated to rotate back and forth (up and down) in conjunction with the expansion and contraction operation of the bucket cylinder 17.

排土部3は、図1〜図7に示すように、左右一対の走行部4間において、基台5に前後方向に伸延する左右一対のブレードアーム26,26の基端部を昇降可能に取り付け、両ブレードアーム26,26の先端部間に左右方向に伸延するブレード(排土板)27を架設して構成している。ブレード27は走行部4,4の左右側幅と略同一幅に形成している。28はブレードシリンダである。   As shown in FIGS. 1-7, the earth removal part 3 can raise / lower the base end part of the left-right paired blade arms 26 and 26 extended in the front-back direction to the base 5 between the left-right paired running parts 4. A blade (soil removal plate) 27 extending in the left-right direction is installed between the tip portions of the blade arms 26 and 26. The blade 27 is formed to have substantially the same width as the width on the left and right sides of the running parts 4, 4. Reference numeral 28 denotes a blade cylinder.

このように構成して、走行機体1は、運転部7で走行部4を操作することで前後直進走行並びに左右旋回走行が適宜行えるようにしている。そして、運転部7で掘削部2を操作することで掘削作業が行えるようにしている。また、運転部7で排土部3を操作することで排土作業が行えるようにしている。   By configuring in this way, the traveling machine body 1 is configured so that the traveling unit 4 is operated by the driving unit 7 so that it can appropriately perform straight forward and backward traveling and left and right turning traveling. And the excavation operation | work can be performed by operating the excavation part 2 with the operation part 7. FIG. Further, the earthing work can be performed by operating the earthing unit 3 with the operation unit 7.

[キャビンの説明]
キャビン30は前記したように旋回体6上に載設して、タンク部8を除く運転部7と機能部9を囲繞している。すなわち、キャビン30は、図8〜図13に示すように、前壁部31と左側壁部32と右側壁部33と後壁部34と天井部35とから下面開口の箱形に形成している。
[Description of cabin]
As described above, the cabin 30 is mounted on the revolving structure 6 and surrounds the operation unit 7 and the function unit 9 except the tank unit 8. That is, as shown in FIGS. 8 to 13, the cabin 30 is formed in a box shape having a lower surface opening from a front wall portion 31, a left wall portion 32, a right wall portion 33, a rear wall portion 34, and a ceiling portion 35. Yes.

前壁部31は、図11に示すように、上下方向に伸延する左右一対の前柱体40,41の下側部間に左右方向に伸延する横長四角形状の下側前壁体42を架設し、前柱体40,41の上側部間に縦長四角形枠状のフロントガラス枠体43を架設するとともに、フロントガラス枠体43にフロントガラス44を張設して形成している。45はワイパーである。左右一対の前柱体40,41は、前低後高の後傾状に形成するとともに、下部を前高後低の前傾状に屈曲させて形成している。そのため、左右一対の前柱体40,41において、フロントガラス44は後傾状に張設されているとともに、その下方の下側前壁体42は前傾状に張設されている。46は左右一対の前柱体40,41の上端部間に左右方向に伸延させて架設した前上部横部材、47は左側の前柱体40に取り付けた手摺りである。   As shown in FIG. 11, the front wall portion 31 is provided with a horizontally elongated rectangular lower front wall body 42 extending in the left-right direction between the lower side portions of the pair of left and right front pillar bodies 40, 41 extending in the vertical direction. A front glass frame 43 having a vertically long rectangular frame shape is installed between upper portions of the front pillars 40 and 41, and a windshield 44 is stretched over the front glass frame 43. 45 is a wiper. The pair of left and right front pillars 40 and 41 are formed in a rearwardly inclined shape with a front height and a rear height, and are formed by bending the lower part in a forwardly inclined shape with a front height and a rear height. Therefore, in the pair of left and right front column bodies 40 and 41, the windshield 44 is stretched in a rearwardly inclined manner, and the lower front wall body 42 below is stretched in a forwardly inclined manner. Reference numeral 46 denotes a front upper horizontal member that is extended between the upper end portions of the pair of left and right front pillars 40 and 41 in the left-right direction, and 47 is a handrail attached to the left front pillar 40.

左側壁部32は、図9に示すように、前半側壁部50と後半側壁部51とから形成している。前半側壁部50は、ドア枠体52と、ドア枠体52に開閉自在に取り付けた開閉ドア53とから形成している。ドア枠体52は、左側の前柱体40と、左側の前柱体40の上端部から後外方へ水平に伸延させて形成した前半上部横部材54と、前半上部横部材54の後端部に上端部を連結して上下方向に伸延する中途柱体55と、中途柱体55の下端部と左側の前柱体40の下端部とを連結して前後方向に伸延する板状の前半下部横部材56とから左側面視枠状に形成している。開閉ドア53は、ドア枠体52の内周縁部に沿わせて外形状を形成し、中途柱体55に上・下蝶番57,57を介して開閉ドア53の後端縁部を枢支・連結して、枢支・連結部を中心に開閉ドア53の前端縁部側を回動させて開閉可能となしている。そして、開閉ドア53を開放した際にはドア枠体52内に乗降口48が形成されるようにしている(図15参照)。   As shown in FIG. 9, the left side wall portion 32 is formed of a front half side wall portion 50 and a rear half side wall portion 51. The front half side wall 50 is formed of a door frame 52 and an opening / closing door 53 attached to the door frame 52 so as to be freely opened and closed. The door frame 52 includes a left front column 40, a front half upper horizontal member 54 formed by extending horizontally from the upper end of the left front column 40 rearward outward, and a rear end of the front upper upper horizontal member 54. A plate-shaped first half that extends in the front-rear direction by connecting the upper end portion to the middle portion and extending in the up-down direction, and connecting the lower end portion of the intermediate column body 55 and the lower end portion of the left front column body 40 to each other A left side view frame shape is formed from the lower lateral member 56. The open / close door 53 forms an outer shape along the inner peripheral edge of the door frame 52, and the rear edge of the open / close door 53 is pivotally supported on the midway column 55 via upper and lower hinges 57, 57. They are connected and can be opened and closed by pivoting the front edge portion side of the opening / closing door 53 around the pivot / connecting portion. When the opening / closing door 53 is opened, a doorway 48 is formed in the door frame 52 (see FIG. 15).

左側壁部32の後半側壁部51は、中途柱体55の上端部から後内方へ水平に伸延させて後半上部横部材58を形成し、後半上部横部材58の後端部に上下方向に伸延する左側後柱体59の上端部を連結して、中途柱体55と後半上部横部材58と左側後柱体59との内周縁部の大半に左側後半ガラス窓60を張設するとともに、左側後半ガラス窓60の下端縁部にドア開放受け体61を張設している。ドア開放受け体61の下方には、ドア開放受け体61の下端縁部と中途柱体55の下半後端縁部に沿わせて鉤状に形成した左下縁壁62を張設している。   The rear half side wall portion 51 of the left side wall portion 32 is horizontally extended rearward inward from the upper end portion of the intermediate column body 55 to form the rear half upper horizontal member 58, and vertically extends at the rear end portion of the rear half upper side horizontal member 58. The upper left end of the left rear column 59 extending is connected, and the left rear glass window 60 is stretched over most of the inner peripheral edge of the mid column 55, the rear upper horizontal member 58, and the left rear column 59, and A door opening receptacle 61 is stretched at the lower edge of the left rear glass window 60. Below the door opening receptacle 61, a lower left edge wall 62 formed in a bowl shape is stretched along the lower edge of the door opening receptacle 61 and the lower half rear edge of the intermediate column 55. .

右側壁部33は、図10に示すように、右側壁形成枠体69の上部に窓枠体70を介して前・後ガラス窓71,72を前後方向にスライド自在に取り付け、右側壁形成枠体69の下部に右下縁壁73と張設して形成している。右側壁形成枠体69は、前上部横部材46の右端部から直後方へ水平に伸延させて形成した右側上部横部材74と、右側上部横部材74の後端部に上端部を連結して上下方向に伸延する右側後柱体75と、右側後柱体75の下部と右側の前柱体41の中途部との間に架設して前後方向に伸延する右側中途部横部材76とから上部を枠状に形成している。右側後柱体75と左側後柱体59は左右方向に対向させて配置して、両柱体59,75の下端間に左右方向に伸延する後下部横板材77を横架している。右下縁壁73は、右側後柱体75の下半部後縁部と右側中途部横部材76の下縁部と右側後柱体75の下部前縁部に沿わせて張設されており、右下縁壁73の下端縁部は上方へ凸状に湾曲形成されている。   As shown in FIG. 10, the right side wall 33 is attached to the upper part of the right side wall forming frame 69 through the window frame 70 so that the front and rear glass windows 71 and 72 are slidable in the front-rear direction. A lower right edge wall 73 is stretched at the lower part of the body 69. The right wall forming frame 69 has a right upper horizontal member 74 formed by horizontally extending rightward from the right end of the front upper horizontal member 46 and an upper end connected to the rear end of the right upper horizontal member 74. Upper part from right rear column 75 extending in the vertical direction and right middle horizontal member 76 extending between the lower part of right rear column 75 and the middle part of right front column 41 and extending in the front-rear direction Is formed in a frame shape. The right rear column body 75 and the left rear column body 59 are arranged to face each other in the left-right direction, and a rear lower horizontal plate 77 extending in the left-right direction is horizontally placed between the lower ends of both the column bodies 59, 75. The right lower edge wall 73 is stretched along the lower half rear edge of the right rear column 75, the lower edge of the right midway lateral member 76, and the lower front edge of the right rear column 75. The lower end edge of the lower right edge wall 73 is curved upward and convex.

後壁部34は、図9,図10及び図12に示すように、後窓部80とエアコン用コンデンサ等収容部81を上下方向に配置して形成している。後窓部80は、左・右側後柱体59,75の上端部間に後方へ膨出させて湾曲形成した後上部横部材82を横架する一方、左・右側後柱体59,75の中途部間に後端縁部を後方へ膨出させて湾曲形成した板状の後中途部仕切り体83を横架して、これらの内周縁部に後窓枠体79を介して背面視四角形状でかつ平面視で後方へ膨出する湾曲状の後ガラス窓84を張設して形成している。エアコン用コンデンサ等収容部81は、左・右側後柱体59,75の下半部と後中途部仕切り体83と後下部横板材77とで横長四角形枠状に形成された内周縁部に、箱形の収容部内壁85(図15及び図16参照)を前方へ凸状に張設して、後面開口で凹状の収容空間86(図14及び図15参照)を形成している。左側後柱体59の下半部には枢支ブラケット87(図15参照)を介して開閉カバー88の左側端縁部を枢支・連結して、開閉カバー88により収容空間86を開閉蓋自在としている。開閉カバー88と後中途部仕切り体83及び後下部横板材77の後端縁部は旋回体6の後部周端縁部形状に沿わせて湾曲状に形成している。89は開閉カバー88の右側部に設けた開閉用の把手である。   As shown in FIGS. 9, 10, and 12, the rear wall portion 34 is formed by arranging a rear window portion 80 and an air conditioning capacitor accommodating portion 81 in the vertical direction. The rear window portion 80 bulges backward between the upper end portions of the left and right rear column bodies 59 and 75 to form a curved rear upper horizontal member 82, while the left and right rear column bodies 59 and 75 A plate-like rear middle part partition body 83 formed by bending the rear edge at the middle part in the rearward direction and being curved is horizontally mounted, and a rear view square is formed on these inner peripheral edge parts via a rear window frame body 79. A curved rear glass window 84 that is shaped and bulges backward in plan view is stretched and formed. The air-conditioner capacitor accommodating portion 81 has an inner peripheral edge formed in the shape of a horizontally long rectangular frame with the lower half of the left and right rear pillars 59, 75, the rear midway partition 83, and the rear lower horizontal plate 77. A box-shaped housing inner wall 85 (see FIGS. 15 and 16) is projected forward to form a concave housing space 86 (see FIGS. 14 and 15) at the rear opening. The lower half of the left rear column 59 is pivotally connected to the left end edge of the opening / closing cover 88 via a pivot bracket 87 (see FIG. 15). It is said. The rear end edge of the opening / closing cover 88, the rear middle part partition body 83, and the rear lower horizontal plate member 77 is formed in a curved shape along the shape of the rear peripheral edge part of the revolving body 6. Reference numeral 89 denotes an opening / closing handle provided on the right side of the opening / closing cover 88.

天井部35は、図13に示すように、前上部横部材46と前半上部横部材54と後半上部横部材58と後上部横部材82と右側上部横部材74とによりリング状に形成された内周縁部に天井板90を張設して形成している。天井板90の前部には横長四角形状の天窓ガラス91を設けて天窓92を形成している。   As shown in FIG. 13, the ceiling portion 35 is formed by a front upper horizontal member 46, a front upper horizontal member 54, a rear upper horizontal member 58, a rear upper horizontal member 82, and a right upper horizontal member 74. A ceiling plate 90 is stretched around the periphery. A ceiling window 90 is formed by providing a horizontally elongated skylight glass 91 at the front portion of the ceiling plate 90.

平面視円弧状に形成された旋回体6の左側後縁部には、図3,図4及び図6に示すように、それに沿わせて湾曲させて形成した左側後縁壁100を立設し、旋回体6の後縁部にはそれに沿わせて湾曲させて形成したボンネット101とカウンターウエイト102を上下に配設し、旋回体6の右側後縁部にはタンク部8を配設している。そして、キャビン30は、旋回体6上において、これらの左側後縁壁100とボンネット101とカウンターウエイト102とタンク部8とで運転部7と機能部9を囲繞している。103はボンネット101の右側部に設けたボンネット把手であり、ボンネット把手103を介してボンネット101を左側後方へ開放可能としている。   As shown in FIGS. 3, 4, and 6, a left rear edge wall 100 formed by bending along the left rear edge of the revolving body 6 formed in an arc shape in plan view is erected. A bonnet 101 and a counterweight 102 that are curved along the upper and lower sides of the swivel body 6 are arranged up and down, and a tank unit 8 is arranged at the right rear edge of the swivel body 6. Yes. The cabin 30 surrounds the operating unit 7 and the functional unit 9 by the left rear edge wall 100, the bonnet 101, the counterweight 102, and the tank unit 8 on the revolving structure 6. Reference numeral 103 denotes a bonnet handle provided on the right side of the bonnet 101. The bonnet 101 can be opened to the rear left side through the bonnet handle 103.

次に、上記のように構成したキャビン30の左側壁部32の前半側壁部50に設けた開閉ドア53の構造について図面を参照しながら説明する。   Next, the structure of the open / close door 53 provided on the front half side wall portion 50 of the left side wall portion 32 of the cabin 30 configured as described above will be described with reference to the drawings.

[開閉ドア構造の説明]
開閉ドア53は、図14〜図19に示すように、ドア枠体52に接離する外周縁部150と、外周縁部150の内周に沿わせて形成するとともに外側方へ膨出状に絞り成形した内周縁部151と、内周縁部151の内周に張設して外周縁部150よりも外側方へ一定幅W1だけオフセットさせて配置した透視板152とを具備している。ここで、透視板152としては内部から外部が透視可能な素材で形成されたものであればよく、例えば、ガラス板やアクリル板を使用することができる。
[Description of open / close door structure]
As shown in FIGS. 14 to 19, the open / close door 53 is formed along the outer peripheral edge 150 that contacts and separates from the door frame 52 and the inner periphery of the outer peripheral edge 150, and bulges outward. An inner peripheral edge 151 formed by drawing, and a see-through plate 152 that is stretched on the inner periphery of the inner peripheral edge 151 and offset from the outer peripheral edge 150 by a predetermined width W1 are arranged. Here, the see-through plate 152 only needs to be formed of a material that can be seen through from the inside to the outside. For example, a glass plate or an acrylic plate can be used.

内周縁部151の前側縁部153(ないしは後側縁部154)の中途部に把手支持体155を張り出し状に延設するとともに、把手支持体155の外側面には透視板152よりも内方に一定幅W2だけオフセットさせて凹面部156を形成している。凹面部156には開閉ドア53を開閉操作する外側開閉把手157と、開放した開閉ドア53を仮止めするストライカ158を設けている。   A handle support 155 extends in the middle of the front edge 153 (or rear edge 154) of the inner peripheral edge 151, and the outer side of the handle support 155 is more inward than the see-through plate 152. The concave portion 156 is formed by offset by a predetermined width W2. The concave surface 156 is provided with an outer opening / closing handle 157 for opening / closing the opening / closing door 53 and a striker 158 for temporarily fixing the opened opening / closing door 53.

把手支持体155は左右方向に扁平な容器状に形成している。把手支持体155の外側面に形成した凹面部156に外側開閉把手157を設けている。一方、把手支持体155の内側面に内側開閉把手159を設けている。把手支持体155の内部には両内・外側開閉把手157,159の操作に連動して開閉ドア53を閉塞状態にロックないしはロック解除する内・外側ロック・解除機構部160,161を収容して配置している。   The handle support 155 is formed in a container shape that is flat in the left-right direction. An outer opening / closing handle 157 is provided on a concave surface portion 156 formed on the outer surface of the handle support 155. On the other hand, an inner opening / closing handle 159 is provided on the inner surface of the handle support 155. Inside the handle support 155 are housed inner / outer lock / release mechanisms 160, 161 for locking or unlocking the open / close door 53 in a closed state in conjunction with the operation of both inner / outer open / close handles 157, 159. It is arranged.

このように構成して、透視板152を外周縁部150よりも外側方へオフセットさせて配置しているため、操作レバーや操作ペダルを開閉ドア53側に近接配置した場合にも、操作レバーや操作ペダルを操作する作業者の手や足が開閉ドア53に当たるという不具合を解消することができる。その結果、運転部7の空間を広く確保して操作性を向上させることができる。   Since the see-through plate 152 is configured to be offset outward from the outer peripheral edge 150 in such a configuration, even when the operation lever or the operation pedal is disposed close to the opening / closing door 53 side, the operation lever or The problem that the operator's hand or foot operating the operating pedal hits the open / close door 53 can be solved. As a result, it is possible to improve the operability by ensuring a wide space for the operation unit 7.

そして、透視板152よりも内方にオフセットさせて形成した把手支持体155の外側面の凹面部156に、外側開閉把手157とストライカ158を設けているため、外側開閉把手157とストライカ158の外側方への突出量を軽減させることができる。そのため、旋回体6の旋回半径内に外側開閉把手157とストライカ158を堅実に配設することができて、旋回体6の旋回時に外側開閉把手157とストライカ158が他物と衝突して損傷等されるのを防止することができる。また、開閉ドア53を開放した際には、外側開閉把手157とストライカ158の外側方への突出量を軽減させることができるため、開放した開閉ドア53をキャビン30の左側壁部32の後半側壁部51に可及的に近接配置させることができて、開放した開閉ドア53の旋回体6の旋回半径内ないしは外方への張出量を軽減することができる。したがって、旋回体6の旋回時に開放した開閉ドア53が他物と干渉して損傷等される虞が低減できる。   Since the outer opening / closing handle 157 and the striker 158 are provided on the concave portion 156 of the outer surface of the handle support 155 formed by being offset inward from the see-through plate 152, the outer opening / closing handle 157 and the striker 158 are outside. The amount of protrusion to the direction can be reduced. Therefore, the outer opening / closing handle 157 and the striker 158 can be firmly disposed within the turning radius of the revolving structure 6, and the outer opening / closing handle 157 and the striker 158 collide with other objects when the revolving structure 6 is turned and are damaged. Can be prevented. Further, when the open / close door 53 is opened, the outward opening amount of the outer open / close handle 157 and the striker 158 can be reduced, so that the open open / close door 53 is connected to the rear side wall of the left side wall portion 32 of the cabin 30. The portion 51 can be disposed as close as possible, and the amount of protrusion of the opened opening / closing door 53 to the inside or outside of the turning radius of the turning body 6 can be reduced. Therefore, it is possible to reduce the possibility that the opening / closing door 53 opened when the revolving structure 6 is turned will interfere with other objects and be damaged.

左右方向に扁平な容器状に形成した把手支持体155の内部に開閉ドア53を開閉操作する内・外側開閉把手159,157の内・外側ロック・解除機構部160,161を収容して配置しているため、開閉ドア53に把手支持体155を介して内・外側開閉把手159,157と内・外側ロック・解除機構部160,161をコンパクトに配置して、これらが運転部7の操作に支障とならないようにすることができる。   Inside / outside lock / release mechanisms 160, 161 of the inside / outside opening / closing handles 159, 157 for opening / closing the opening / closing door 53 are accommodated in the inside of a handle support 155 formed in a flat container shape in the left-right direction. Therefore, the inner / outer opening / closing handles 159 and 157 and the inner / outer lock / release mechanism sections 160 and 161 are arranged compactly on the opening / closing door 53 via the handle support 155, and these are used for the operation of the operation section 7. It can be made not to interfere.

次に、本実施形態に係る開閉ドア53の構造を、図14〜図22を参照しながら、より具体的に説明する。すなわち、開閉ドア53の外側縁部150には弾性素材によりパイプ状に形成した当接体163を外周縁部150の内面に沿わせてリング状に配置している。開閉ドア53を閉塞した際には、縦長五角形状に形成したドア枠体52の内周縁部に当接体163が押圧(弾性)変形された状態で当接して密閉されるようにしている。   Next, the structure of the open / close door 53 according to the present embodiment will be described more specifically with reference to FIGS. 14 to 22. That is, a contact body 163 formed in a pipe shape with an elastic material is arranged in a ring shape along the inner surface of the outer peripheral edge portion 150 on the outer edge portion 150 of the open / close door 53. When the open / close door 53 is closed, the contact body 163 is in contact with the inner peripheral edge of the door frame 52 formed in a vertically long pentagon shape in a state of being pressed (elastically) deformed to be sealed.

内周縁部151は、外周縁部150の内周に沿わせて一定細幅を有するリング状に一体成形するとともに、外側方へ円弧状に湾曲させて膨出状に絞り成形している。つまり、内周縁部151の内周縁は外周縁よりも外側方へ偏倚させて形成している。そして、内周縁部151の前側縁部153と後側縁部154の中途部間には薄肉板状の横桟164を横架状に一体成形している。横桟164の前半部にはその上下縁と後縁を残して前側縁部153と連続する把手支持体155を一体成形している。把手支持体155は左側面視で略逆台形状に形成している。把手支持体155の外側周縁には凸条の土堤状部165を形成して、土提状部165の内方を凹面部156となしている。   The inner peripheral edge 151 is integrally formed into a ring shape having a constant narrow width along the inner periphery of the outer peripheral edge 150, and is drawn into a bulging shape by curving in an arc shape outward. In other words, the inner peripheral edge of the inner peripheral edge 151 is formed to be biased outward from the outer peripheral edge. And between the front edge part 153 of the inner peripheral edge part 151 and the middle part of the rear edge part 154, the thin plate-shaped horizontal crosspiece 164 is integrally formed in the horizontal form. A handle support 155 that is continuous with the front side edge 153 is integrally formed on the front half of the horizontal rail 164, leaving the upper and lower edges and the rear edge. The handle support 155 is formed in a substantially inverted trapezoidal shape when viewed from the left side. On the outer periphery of the handle support 155, a convex ridge-like portion 165 is formed, and the inside of the dough-like portion 165 is formed as a concave portion 156.

内周縁部151の内縁上半部と横桟164の上縁部には、上部の透視板152の周縁部を外側から内外側重合状態に接着して、上部の透視板152を張設している。そして、図18,図21及び図22に示すように、上部の透視板152は外周縁部150よりも外側方へ一定幅W1だけオフセットさせて配置している。   The upper see-through plate 152 is stretched between the upper half of the inner perimeter 151 and the upper edge of the crosspiece 164 by bonding the perimeter of the upper see-through plate 152 from the outside to the inner / outer overlap state. Yes. 18, 21, and 22, the upper see-through plate 152 is arranged so as to be offset from the outer peripheral edge portion 150 by a certain width W1 outward.

このように構成して、上部の透視板152の右側方に配置されている左作業部操作レバー115との間隔を確保することで、左作業部操作レバー115を上部の透視板152側である左側方へ傾倒操作した際に、左作業部操作レバー115を把持して操作している作業者の左手が上部の透視板152に干渉するのを防止することができる。つまり、運転部7の操作空間を良好に確保することができる。   With this configuration, the left working unit operation lever 115 is located on the upper seeing plate 152 side by securing a distance from the left working unit operation lever 115 arranged on the right side of the upper seeing plate 152. It is possible to prevent the left hand of the operator who is gripping and operating the left working unit operation lever 115 from interfering with the upper see-through plate 152 when tilted to the left. That is, the operation space of the driving unit 7 can be secured satisfactorily.

内周縁部151の内縁下半部と横桟164の下縁部には、下部の透視板152の周縁部を外側から内外側重合状態に接着して、下部の透視板152を張設している。そして、図18,図21及び図22に示すように、下部の透視板152は外周縁部150よりも外側方へ一定幅W1だけオフセットさせて配置している。   The lower fluoroscopic plate 152 is stretched between the lower half of the inner peripheral edge 151 and the lower edge of the crosspiece 164 by bonding the peripheral edge of the lower fluoroscopic plate 152 from the outside to the inner / outer overlapping state. Yes. 18, 21, and 22, the lower see-through plate 152 is arranged so as to be offset from the outer peripheral edge portion 150 by a certain width W1 outward.

このように構成して、下部の透視板152の右側方に配置されている増速ペダル121との間隔を確保することで、増速ペダル121を踏み込み操作した際に、作業者の左足が下部の透視板152に干渉するのを防止することができる。つまり、運転部7の操作空間を良好に確保することができる。   By configuring in this way and securing a distance from the speed increasing pedal 121 disposed on the right side of the lower see-through plate 152, when the speed increasing pedal 121 is depressed, the operator's left foot Interference with the see-through plate 152 can be prevented. That is, the operation space of the driving unit 7 can be ensured satisfactorily.

ドア開放受け体61には、開放された開閉ドア53のストライカ158を受けて開閉ドア53を仮止めするストライカ受け166と、開放された開閉ドア53の凹面部156に先端部が当接して開閉ドア53を受ける開閉ドア受け167を設けている。図14中の168は後半側壁部51の左側後半ガラス窓60の後上部に設けた上部開閉ドア受けであり、上部開閉ドア受け168の先端部に開閉ドア53の外側面前上部が当接するようにしている。そして、開放された開閉ドア53の外側面を両開閉ドア受け167,168により受けて、開閉ドア53を後半側壁部51に干渉させることなく可及的に近接配置させて開放状態に仮止めすることができるようにしている。   The door opening receptacle 61 receives the striker 158 of the opened opening / closing door 53 and temporarily stops the opening / closing door 53, and the opening portion of the door opening / closing door 61 is in contact with the concave surface portion 156 of the opened opening / closing door 53. An open / close door receiver 167 for receiving the door 53 is provided. Reference numeral 168 in FIG. 14 denotes an upper opening / closing door receiver provided at the rear upper part of the left rear glass window 60 of the rear wall portion 51 so that the front upper portion of the opening / closing door 53 is in contact with the tip of the upper opening / closing door receiver 168. ing. Then, the outside surface of the opened opening / closing door 53 is received by the both opening / closing door receivers 167, 168, and the opening / closing door 53 is disposed as close as possible without interfering with the rear half side wall portion 51 and temporarily fixed in the opened state. To be able to.

このように構成して、図16及び図17に示すように、旋回体6の旋回範囲(旋回中心から旋回体6の最外側であるカウンターウエイト102の外周面までを半径とする回転範囲)Zからの張出量を軽減して、旋回体6の旋回時に開放した開閉ドア53が他物と干渉して損傷等される虞を低減している。   With this configuration, as shown in FIGS. 16 and 17, the turning range of the swing body 6 (the rotation range having a radius from the turning center to the outer peripheral surface of the counterweight 102 which is the outermost side of the swing body 6) Z This reduces the amount of overhang, and reduces the possibility that the opening / closing door 53 opened when the revolving structure 6 turns will interfere with other objects and be damaged.

図15中の169は開閉ドア内側手摺り、170はキャビン内側手摺りである。図16〜図19中の171は開閉ドア53の外側方に位置する旋回体6の上面部分に形成した乗降ステップであり、乗降ステップ171を足掛かりにしてキャビン30内の運転部7に乗降可能としている。   In FIG. 15, reference numeral 169 denotes an open / close door inner handrail, and 170 denotes a cabin inner handrail. In FIG. 16 to FIG. 19, 171 is a boarding / alighting step formed on the upper surface portion of the revolving body 6 located on the outer side of the opening / closing door 53. Yes.

[運転部と機能部とタンク部の説明]
運転部7は、図18及び図19に示すように、旋回体6の一部を形成する床板片110の後端縁部に座席支持台(シートマウント)111の前壁を配置し、座席支持台111上の中央部に運転席112を載設している。座席支持台111上の運転席112の左側には左レバー支持ケース113を配設する一方、運転席112の右側には右レバー支持ケース114を配設している。左レバー支持ケース113内には左パイロット弁(図示せず)を配設し、左レバー支持ケース113の前上部から左作業部操作レバー115を上方へ突設するとともに、左作業部操作レバー115を前後方向と左右方向に傾倒操作可能としている。
[Explanation of operation part, function part and tank part]
As shown in FIGS. 18 and 19, the operation unit 7 arranges the front wall of the seat support 111 (seat mount) 111 at the rear edge of the floor plate piece 110 that forms a part of the revolving structure 6, and supports the seat. A driver's seat 112 is placed in the center on the platform 111. A left lever support case 113 is disposed on the left side of the driver seat 112 on the seat support base 111, while a right lever support case 114 is disposed on the right side of the driver seat 112. A left pilot valve (not shown) is disposed in the left lever support case 113, and a left working unit operation lever 115 is projected upward from the front upper part of the left lever support case 113 and the left working unit operation lever 115. Can be tilted in the front-rear direction and the left-right direction.

そして、左レバー支持ケース113は略水平な使用位置と、後部を中心に後上方へ跳ね上げた不使用位置との間で位置変更自在となしている。116は左レバー支持ケース113の前端壁から前方へ突設したロックレバーである。   The left lever support case 113 is freely changeable between a substantially horizontal use position and a non-use position where the rear lever is flipped up rearward and upward. Reference numeral 116 denotes a lock lever that protrudes forward from the front end wall of the left lever support case 113.

右レバー支持ケース114内には右パイロット弁(図示せず)を配設し、右レバー支持ケース114の前上部から右作業部操作レバー117を上方へ突設するとともに、右作業部操作レバー117を前後方向と左右方向に傾倒操作可能としている。   A right pilot valve (not shown) is disposed in the right lever support case 114, and a right working unit operation lever 117 is projected upward from the front upper part of the right lever support case 114, and the right working unit operation lever 117. Can be tilted in the front-rear direction and the left-right direction.

運転席112の直前方には床板片110の前中央部に形成したレバー孔を通して上下方向に伸延する左・右側走行レバー120,120を立設しており、各走行レバー120,120は前後方向に傾倒操作可能としている。各走行レバー120,120には走行制御弁(図示せず)を介して走行部4,4の走行油圧モータを油圧接続して、各走行レバー120,120の前後方向の傾倒動作に走行油圧モータの正逆転動作を連動させて、走行部4,4を走行操作可能としている。121は左側走行レバー120の左側近傍に位置させて床板片110上に設けた増速ペダルであり、増速ペダル121を踏み込み操作することで車速が増速されるようにしている。122は右側走行レバー120の右側近傍に位置させて床板片110上に設けたブームスイング操作ペダルである。   Immediately before the driver's seat 112, left and right traveling levers 120, 120 extending up and down through a lever hole formed in the front center portion of the floor board piece 110 are erected. The tilting operation is possible. The travel hydraulic motors of the travel units 4 and 4 are hydraulically connected to the travel levers 120 and 120 via travel control valves (not shown) so that the travel levers 120 and 120 are tilted in the front-rear direction. The traveling units 4 and 4 can be operated by interlocking the forward / reverse operation. A speed increasing pedal 121 is provided near the left side of the left travel lever 120 and provided on the floor plate piece 110, and the vehicle speed is increased by depressing the speed increasing pedal 121. A boom swing operation pedal 122 is provided on the floor board piece 110 so as to be positioned near the right side of the right travel lever 120.

右レバー支持ケース114の右側方には前後が長幅で左右幅が短幅に形成の操作パネル部130を隣接させて配設している。操作パネル部130の上面前部には液晶モニター131を設け、中途部からブレードレバー132を前後方向に傾倒操作可能に突出させて、後部に各種スイッチ群133を配設している。ブレードレバー132にはブレードシリンダ制御弁(図示せず)を介して排土部3のブレードシリンダ28を油圧接続して、ブレードレバー132の前後方向の傾倒操作にブレードシリンダ28の伸縮動作を連動させて、排土部3を昇降作動可能としている。   On the right side of the right lever support case 114, an operation panel portion 130 formed with a long front and rear width and a short left and right width is disposed adjacently. A liquid crystal monitor 131 is provided in front of the upper surface of the operation panel unit 130, and a blade lever 132 is protruded from a midway part so as to be tiltable in the front-rear direction, and various switch groups 133 are disposed at the rear part. The blade lever 132 is hydraulically connected to the blade cylinder 28 via the blade cylinder control valve (not shown), and the expansion / contraction operation of the blade cylinder 28 is linked to the tilting operation of the blade lever 132 in the front-rear direction. Thus, the soil removal unit 3 can be moved up and down.

機能部9は、図19に示すように、座席支持台111の下方をエンジンルーム139となして、エンジンルーム139内に左右方向に伸延させて形成したエンジンE等を原動機部として配設している。   As shown in FIG. 19, the functional unit 9 has an engine room 139 below the seat support base 111 and an engine E or the like formed by extending in the left-right direction in the engine room 139 as a prime mover unit. Yes.

タンク部8は、図4、図18及び図19に示すように、エンジンEを駆動するための燃料を収容する燃料タンクと、作動油を収容する作動油タンク(これらは図示せず)を前後に隣接させて配設している。これらのタンクは、旋回体6の右側前部上に湾曲状に屈曲形成して立設した前タンクカバー体142と、旋回体6の前部側縁部に沿わせて配設した第1・第2タンクカバー体143,144と、床板片110の右側内方に立設した内壁体(図示せず)と、これらの前タンクカバー体142と第1・第2タンクカバー体143,144と内壁体の上端縁部上に配設した上面カバー体145とにより閉塞して、上面カバー体145により両タンクの上方を開閉自在となしている。   As shown in FIGS. 4, 18, and 19, the tank unit 8 includes a fuel tank that stores fuel for driving the engine E and a hydraulic oil tank that stores hydraulic oil (these are not shown). Is arranged adjacent to. These tanks include a front tank cover body 142 that is bent and formed on the right front portion of the swivel body 6 and a first tank disposed along the front side edge of the swivel body 6. Second tank cover bodies 143 and 144, an inner wall body (not shown) standing on the right inner side of the floor plate piece 110, front tank cover body 142, first and second tank cover bodies 143 and 144, The upper surface cover body 145 disposed on the upper edge of the inner wall body is closed, and the upper surface cover body 145 can open and close both tanks.

A 掘削作業車
1 走行機体
2 掘削部
3 排土部
4 走行部
53 開閉ドア
150 外周縁部
151 内周縁部
152 透視板
155 把手支持体
157 外側開閉把手
158 ストライカ
A excavation work vehicle 1 traveling machine body 2 excavating part 3 earth removing part 4 traveling part 53 opening / closing door 150 outer peripheral edge 151 inner peripheral part 152 see-through plate 155 handle support 157 outer opening / closing handle 158 striker

Claims (3)

旋回体上に載設したキャビン内に運転部を配設し、キャビンの一側壁の一部をドア枠体とドア枠体に開閉自在に取り付けた開閉ドアとから形成して、開閉ドアを介して運転部への乗降を可能に構成した旋回作業車のキャビンの開閉ドア構造であって、
開閉ドアは、ドア枠体に接離する外周縁部と、外周縁部の内周に沿わせて形成するとともに外側方へ膨出状に絞り成形した内周縁部と、内周縁部の内周に張設して外周縁部よりも外側方へオフセットさせて配置した透視板とを具備することを特徴とする旋回作業車。
An operating part is arranged in a cabin mounted on a revolving body, and a part of one side wall of the cabin is formed from a door frame body and an open / close door that is openably and closably attached to the door frame body. The opening / closing door structure of the cabin of the swivel work vehicle configured to be able to get on and off the driving part,
The open / close door includes an outer peripheral edge contacting and separating from the door frame, an inner peripheral edge formed along the inner periphery of the outer peripheral edge and squeezed outwardly, and an inner periphery of the inner peripheral edge. And a see-through plate that is arranged so as to be offset outwardly from the outer peripheral edge portion.
内周縁部の前側縁部ないしは後側縁部の中途部に把手支持体を張り出し状に延設するとともに、把手支持体の外側面には透視板よりも内方にオフセットさせて凹面部を形成し、凹面部には開閉ドアを開閉操作する外側開閉把手と開放した開閉ドアを仮止めするストライカを設けたことを特徴とする請求項1記載の旋回作業車。   A handle support is extended in the middle of the front edge or rear edge of the inner peripheral edge, and a concave surface is formed on the outer surface of the handle support by being offset inward from the perspective plate. 2. The turning work vehicle according to claim 1, wherein an outer opening / closing handle for opening / closing the opening / closing door and a striker for temporarily fixing the opened opening / closing door are provided on the concave surface portion. 把手支持体は左右方向に扁平な容器状に形成して、把手支持体の外側面に形成した凹面部に外側開閉把手を設ける一方、把手支持体の内側面に内側開閉把手を設けて、把手支持体の内部に両内・外側開閉把手の内・外側ロック・解除機構部を収容して配置したことを特徴とする請求項2記載の旋回作業車。   The handle support is formed in a container shape that is flat in the left-right direction, and an outer opening / closing handle is provided on the concave portion formed on the outer surface of the handle support, while an inner opening / closing handle is provided on the inner surface of the handle support. 3. A turning work vehicle according to claim 2, wherein the inner and outer lock / release mechanism portions of the inner and outer opening / closing handles are accommodated in the support body.
JP2012121224A 2012-05-28 2012-05-28 Revolving work vehicle Pending JP2013245506A (en)

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JPH0585167A (en) * 1991-09-27 1993-04-06 Iseki & Co Ltd Lock device for cabin door
JP2002327463A (en) * 2001-05-02 2002-11-15 Komatsu Ltd Door for cab in construction equipment
JP2005335683A (en) * 2004-04-30 2005-12-08 Takeuchi Seisakusho:Kk Operator cab for construction machine
JP2006036002A (en) * 2004-07-27 2006-02-09 Komatsu Ltd Cab of construction machine and manufacturing method of cab
JP2010125876A (en) * 2008-11-25 2010-06-10 Komatsu Ltd Cab for construction machine

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