JP2657541B2 - All-turn type work machine - Google Patents
All-turn type work machineInfo
- Publication number
- JP2657541B2 JP2657541B2 JP33142888A JP33142888A JP2657541B2 JP 2657541 B2 JP2657541 B2 JP 2657541B2 JP 33142888 A JP33142888 A JP 33142888A JP 33142888 A JP33142888 A JP 33142888A JP 2657541 B2 JP2657541 B2 JP 2657541B2
- Authority
- JP
- Japan
- Prior art keywords
- cab
- driver
- door
- circle
- side wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/16—Cabins, platforms, or the like, for drivers
- E02F9/163—Structures to protect drivers, e.g. cabins, doors for cabins; Falling object protection structure [FOPS]; Roll over protection structure [ROPS]
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Component Parts Of Construction Machinery (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、例えば油圧ショベル等の全旋回式作業機に
関し、特に、狭い作業現場等でも上部旋回体を旋回させ
て、掘削作業時を行いうるようにした全旋回式作業機に
関する。Description: TECHNICAL FIELD The present invention relates to an all-swing work machine such as a hydraulic shovel, and more particularly, to an excavation work by turning an upper swing body even in a narrow work site or the like. The present invention relates to an all-turn type working machine that can be obtained.
〔従来の技術〕 本出願人は、実開昭63−36567号公報、実開昭63−365
68号公報に示す従来技術の全旋回式作業機を改良するも
のとして、先に、特願昭63−217538において、狭い作業
現場等でも上部旋回体を旋回させて、掘削作業等を行い
うるようにした全旋回式作業機を提案している。[Prior Art] The present applicant has disclosed Japanese Utility Model Laid-Open No.
As an improvement of the conventional all-swing type working machine disclosed in Japanese Patent Publication No. 68-217538, first, in Japanese Patent Application No. 63-217538, the upper revolving unit can be swung even in a narrow work site or the like to perform excavation work or the like. We have proposed a fully revolving work machine.
そこで、第２図ないし第４図にこの種の先行技術によ
る全旋回式作業機として、小型の油圧ショベルを例に挙
げて示す。FIGS. 2 to 4 show a small-sized hydraulic excavator as an example of this type of all-swing type working machine according to the prior art.
図において、１は下部走行体、２は該下部走行体１上
に旋回可能に搭載された上部旋回体を示し、該上部旋回
体２は骨組構造をなすフレーム2Aを備え、該フレーム2A
上には下部走行体１の後方から見て右側に位置して機械
室３が設けられている。そして、該機械室３内にはエン
ジン、ラジエータおよび油圧ポンプ（いずれも図示せ
ず）等が設けられ、該機械室の後部側は後述するカウン
タウェイト19の一部によって上方から覆われるようにな
っている。In the drawing, reference numeral 1 denotes a lower traveling body, 2 denotes an upper revolving body that is pivotably mounted on the lower traveling body 1, and the upper revolving body 2 includes a frame 2A having a frame structure.
A machine room 3 is provided on the upper side on the right side when viewed from behind the lower traveling body 1. An engine, a radiator, a hydraulic pump (all not shown), and the like are provided in the machine room 3, and a rear portion of the machine room is covered from above by a part of a counterweight 19 described later. ing.
４は上部旋回体２の前部左側に位置して、フレーム2A
上に設けられた運転室を示し、該運転室４は略長方形の
箱形状に形成され、第４図に示す如く左，右の側壁部4
A,4B、前壁部4C、後壁部4D、床板部4Eおよび第２図に示
す上壁部としての天板部4F等によって構成されている。
そして、該運転室４の側壁部4Aには後述する旋回半径Ｒ
の円20内に運転室４を収めるべく、前端側に比較的小さ
な面取り部4A1が高さ方向全長に亘って形成され、後部
側には該面取り部4A1よりも大きい面取り部A2が同様に
高さ方向全長に亘って形成されている。ここで、該面取
り部4A2は第４図に示す如く運転室４の内側へと傾斜
し、後述のドア５が後方へと大きく開くのを補償するよ
うになっている。4 is located on the front left side of the upper revolving unit 2 and has a frame 2A
The operator's cab 4 is formed in a substantially rectangular box shape and has left and right side walls 4 as shown in FIG.
A, 4B, a front wall 4C, a rear wall 4D, a floor plate 4E, a top plate 4F as an upper wall shown in FIG. 2, and the like.
The side wall 4A of the cab 4 has a turning radius R described later.
To accommodate the circle 20 cab 4, are formed over a relatively small chamfer 4A 1 is a height direction entire length at the front end side, a large chamfer A 2 than chamfer 4A 1 is the rear side Similarly, it is formed over the entire length in the height direction. Here, the chamfered portion 4A 2 is adapted to be inclined inwardly of the cab 4 as shown in Figure 4, to compensate for the door 5 to be described later open wide rearward.
５は運転室４の側壁部4Aに面取り部4A1,4A2間に位置
して設けられた開閉用のドアを示し、該ドア５は面取り
部4A2の前端側に蝶番6,6を介して回動可能に取付けら
れ、第４図中の矢示Ａ方向に回動することにより面取り
部4A2の壁面にほぼ当接する位置まで後方へと大きく開
かれるようになっている。ここで、該ドア５にはロック
機構７が設けられ、面取り部4A2に設けた係合突起８に
該ロック機構７を係合させることにより、ドア５は全開
した状態で面取り部4A2の係合突起８にロックされるよ
うになっている。そして、該ドア５は前記全開状態で旋
回半径Ｒの円20内に収められ、全開状態のドア５が周囲
の障害物等に衝突するのを防止できるようになってい
る。5 shows a door for opening and closing which is provided located between the chamfered portion 4A 1, 4A 2 on the side wall portion 4A of the cab 4, the door 5 through a hinge 6,6 at the front end of the chamfer 4A 2 Te mounted pivotably, is adapted to be largely opened to the rear until substantially abutting located on the wall of the chamfer 4A 2 by rotating in the direction of arrow a in FIG. 4. Here, on the door 5 lock mechanism 7 is provided, by engaging the locking mechanism 7 in the engaging projection 8 provided on the chamfered portion 4A 2, the door 5 of the chamfer 4A 2 in a state of fully open It is configured to be locked by the engagement projection 8. The door 5 is accommodated in a circle 20 having a turning radius R in the fully opened state, so that the door 5 in the fully opened state can be prevented from colliding with a surrounding obstacle or the like.
9,10はドア５の内側および外側に設けられた開閉操作
用のノブ、11は運転室４内に設けられた運転席を示し、
該運転席11の前側には運転室４内に位置して左，右の走
行用レバー12,13およびフロント、旋回操作用の操作レ
バー14,15が設けられている。また、運転席11の右側に
は運転室４内に位置して各種の操作スイッチ及びメータ
類等からなる操作パネル16が設けられている。Reference numerals 9 and 10 denote opening / closing operation knobs provided inside and outside the door 5, 11 denotes a driver's seat provided in the cab 4,
In front of the driver's seat 11, left and right traveling levers 12, 13 and front and turning operation levers 14, 15 are provided in the cab 4. On the right side of the driver's seat 11, an operation panel 16 including various operation switches and meters is provided in the driver's cab 4.
17は運転室４の後側に位置して、フレーム2A上に設け
られた燃料タンクを示し、該燃料タンク17はその左側面
が運転室４の面取り部4A2に対応する角度をもって傾斜
し、ドア５が後方へと大きく全開されるのを補償するよ
うになっている。18は作動油タンク、19は該作動油タン
ク18および機械室３等の後側に位置してフレーム2A上に
設けられたカウンタウェイトを示し、該カウンタウェイ
ト19は旋回半径Ｒの円20にほぼ沿うように湾曲して形成
され、その右側部分19Aは機械室３の後部を上方から覆
うようになっている。17 located on the rear side of the cab 4, shows a fuel tank provided on the frame 2A, the fuel tank 17 is inclined at an angle left side thereof corresponds to the chamfered portion 4A 2 of the cab 4, It is designed to compensate for the door 5 being fully opened rearward. Reference numeral 18 denotes a hydraulic oil tank, 19 denotes a counter weight provided on the frame 2A at the rear side of the hydraulic oil tank 18 and the machine room 3 and the like, and the counter weight 19 substantially corresponds to a circle 20 having a turning radius R. The right portion 19A covers the rear part of the machine room 3 from above.
20は上部旋回体２の旋回中心Ｏを中心とした所定の旋
回半径Ｒの円を示し、該旋回半径Ｒの20内には上部旋回
体２のフレーム2A、機械室３、運転室４およびカウンタ
ウェイト19等が全て収められ、これらが上部旋回体２の
旋回時に周囲の障害物等に衝突するのを防止できるよう
にしている。21は上部旋回体２の前部に俯仰動可能に設
けられたフロントとしての作業装置を示し、該作業装置
21はブーム22、アーム23およびバケット24からなり、こ
れらはブームシリンダ25、アームシリンダ26およびバケ
ットシリンダ27によって回動される。さらに、28は下部
走行体１の前部に設けられた排土板を示している。Reference numeral 20 denotes a circle having a predetermined turning radius R centered on the turning center O of the upper turning body 2. Within the turning radius R, the frame 2A of the upper turning body 2, the machine room 3, the cab 4, and the counter All the weights 19 and the like are accommodated so that they can be prevented from colliding with surrounding obstacles or the like when the upper swing body 2 turns. Reference numeral 21 denotes a working device as a front provided at the front of the upper revolving unit 2 so as to be able to move up and down.
21 comprises a boom 22, an arm 23 and a bucket 24, which are rotated by a boom cylinder 25, an arm cylinder 26 and a bucket cylinder 27. Further, reference numeral 28 denotes an earth removal plate provided at the front of the lower traveling body 1.
先行技術による油圧ショベルは上述の如き構成を有す
るもので、ブームシリンダ25、アームシリンダ26によっ
てブーム22、アーム23を俯仰動させつつ、バケットシリ
ンダ27によってバケット24を回動させ、該バケット24に
より土砂の掘削作業等を行うようにしている。そして、
狭い作業現場等では第２図に示す如く、ブーム22を高く
仰動させ、アーム23およびバケット24を折畳むように回
動させた状態で、上部旋回体２を船体半径Ｒの円20に沿
って旋回させ、ブーム22およびアーム23を所望の方向に
配向させつつ、バケット24により狭い作業現場での掘削
作業等を行ないうるようにしている。The hydraulic shovel according to the prior art has the above-described configuration, and while the boom 22 and the arm 23 are raised and lowered by the boom cylinder 25 and the arm cylinder 26, the bucket 24 is rotated by the bucket cylinder 27, and the soil 24 Excavation work. And
In a narrow work site or the like, as shown in FIG. 2, the upper revolving unit 2 is moved along a circle 20 having a hull radius R in a state where the boom 22 is raised and the arm 23 and the bucket 24 are rotated so as to be folded. The bucket 24 allows the user to perform excavation work or the like at a narrow work site while rotating the boom 22 and the arm 23 in desired directions.
ところで、上述した先行技術では、旋回半径Ｒの円20
内に運転室４を収めるべく、該運転室４を比較的小さく
し、略長方形の箱形状に形成しており、ドア５が設けら
れる左側の側壁部4Aは面取り部4A1,4A2を除いて運転席1
1に対してほぼ平行となっている。By the way, in the above-described prior art, a circle having a turning radius R
The operator's cab 4 is made relatively small and formed in a substantially rectangular box shape so that the operator's cab 4 can be accommodated therein. Except for the chamfered portions 4A 1 and 4A 2 , the left side wall 4A on which the door 5 is provided is provided. Driver's seat 1
It is almost parallel to 1.
このため先行技術では、運転席11上に運転席が着席し
たときに運転室４内が狭くて圧迫感を感じることがあ
り、運転時に早期に疲労する等の未解決な問題がある。
また、ドア５を開いて運転者が運転室４に乗り降りする
ときに、ドア５が設けられた側壁部4Aと運転席11との間
隔が狭く、運転者の足が運転席11に当ったりして、乗り
降りをスムーズに行なうことができないという問題があ
る。For this reason, in the prior art, when the driver's seat is seated on the driver's seat 11, the inside of the driver's cab 4 may be narrow and a feeling of oppression may be felt, and there is an unsolved problem such as early fatigue during driving.
Further, when the driver opens and closes the door 5 and gets in and out of the driver's cab 4, the distance between the side wall 4A provided with the door 5 and the driver's seat 11 is small, and the driver's feet may hit the driver's seat 11. Therefore, there is a problem that it is not possible to get on and off smoothly.
本発明は上述した先行技術の問題に鑑みなされたもの
で、本発明は運転室運内の居住性を向上でき、運転時の
疲労を軽減できる上に、運転室への乗り降りをスムーズ
に行ないうるようにした全旋回式作業機を提供するもの
である。The present invention has been made in view of the above-described problems of the prior art, and the present invention can improve the livability in the driver's cab, reduce fatigue during driving, and can smoothly get on and off the driver's cab. It is intended to provide an all-turn type working machine as described above.
上述した課題を解決するために本発明が採用する構成
の特徴は、運転室は該運転室内を可及的に広くすべく、
開閉用のドアが設けられる側壁部を旋回半径Ｒの円内で
略く字形状に大きく張出させたことにある。The feature of the configuration adopted by the present invention to solve the above-described problem is that the cab is designed to make the cab as wide as possible.
This is because the side wall portion on which the door for opening and closing is provided is largely extended in a substantially rectangular shape within a circle having a turning radius R.
開閉用のドアが設けられる運転室の側壁部を旋回半径
Ｒの円内で略く字形状に大きく張出させたから、この側
壁部と運転席との間に比較的広いスペースを確保でき、
運転席に着席したときの圧迫感を取除くことができる。Since the side wall portion of the driver's cab in which the door for opening and closing is provided is greatly extended in a substantially rectangular shape within a circle having a turning radius R, a relatively large space can be secured between the side wall portion and the driver's seat.
The feeling of oppression when sitting in the driver's seat can be eliminated.
以下本発明の実施例を第１図に基づいて説明する。な
お、実施例では前述した第２図ないし第４図に示す先行
技術と同一の構成要素に同一の符号を付し、その説明を
省略するものとする。Hereinafter, an embodiment of the present invention will be described with reference to FIG. In the embodiment, the same components as those of the prior art shown in FIGS. 2 to 4 are denoted by the same reference numerals, and description thereof will be omitted.
図中、31は上部旋回体２の前部左側に位置して、フレ
ーム2A上に設けられた運転室を示し、該運転室31は先行
技術で述べた運転室４とほぼ同様に、左，右の側壁部31
A,31B、前壁部31C、後壁部31D、床板部31Eおよび天板部
（図示せず）等によって構成されるものの、該運転室31
では後述のドア32が設けられる側壁部31Aが略く字形状
に大きく屈曲して形成され、その屈曲部31A1が旋回半径
Ｒの円20にほぼ内接する位置まで円20の半径方向に大き
く張出すようになっている。ここで、側壁室31Aの屈曲
部31A1は旋回中心Ｏを通る例えばＹ軸上に配設され、こ
のＹ軸と直交するＸ軸は上部旋回体２の長さ方向の軸と
なり、運転室31の側壁部31BはＸ軸と平行に配設されて
いる。In the figure, reference numeral 31 denotes an operator's cab provided on the frame 2A, which is located on the front left side of the upper revolving unit 2, and the operator's cab 31 is substantially the same as the operator's cab 4 described in the prior art. Right side wall 31
A, 31B, a front wall portion 31C, a rear wall portion 31D, a floor plate portion 31E, a top plate portion (not shown), and the like.
In the side wall portion 31A described later of the door 32 is provided is formed by increasing bent into shape rather substantially greater Zhang in the radial direction of the circle 20 to the position where the bent portion 31A 1 is substantially inscribed in a circle 20 of the turning radius R It comes out. Here, the bent portion 31A 1 of the side wall chamber 31A is disposed on the example Y-axis passing through the turning center O, X-axis orthogonal to the Y-axis becomes the length direction of the upper rotating body 2 axes, cab 31 Is arranged in parallel with the X-axis.
32は運転室31の側壁部31Aに設けられた開閉用のドア
を示し、該ドア32は屈曲部31A1の前側に位置し、該屈曲
部31A1の位置で蝶番33を介して回動可能に取付けられて
いる。そして、該ドア32は内側、外側の開閉操作用のノ
ブ34,35を介して矢示Ｂ方向に回動され、側壁部31Aの屈
曲部31A1よりも後側に位置する傾斜部31A2にほぼ当接す
る位置まで大きく全開されるようになっている。また、
該ドア32には先行技術で述べたドア５と同様にロック機
構７が設けられ、傾斜部31A2には該ロック機構７が係合
してドア32が全開位置でロックさせる係合突起８が設け
られている。32 shows a door for opening and closing provided in the side wall portion 31A of the cab 31, the door 32 is located in front of the bent portion 31A 1, rotatable via a hinge 33 at the position of the bent portion 31A 1 Mounted on Then, the door 32 is inside, is rotated in the arrow B direction via the knobs 34, 35 for the outside of the opening and closing operation, the inclined portion 31A 2 located rearward of the bent portion 31A 1 of the side wall portion 31A It is fully opened to a position where it almost abuts. Also,
The said door 32 likewise lock mechanism 7 is provided with a door 5 as described in the prior art, the inclined portion 31A 2 is engaging projections 8 to lock door 32 the lock mechanism 7 is engaged in the fully open position Is provided.
36は運転室31内に床板部31E上に位置して設けられた
運転席を示し、該運転席36の前側には運転室31内に位置
して左，右の走行用レバー37,38およびフロント、旋回
操作用の操作レバー39,40が設けられ、運転席36の右側
には各種の操作スイッチおよびメータ類等からなる操作
パネル41が設けられている。さらに、42は運転室31の後
側に位置して、フレーム2A上に設けられた燃料タンクを
示し、該燃料タンク42はその左側面が運転室31の傾斜部
31A2に対応する角度をもって傾斜し、ドア32が後方へと
大きく全開されるのを補償するようになっている。Reference numeral 36 denotes a driver's seat provided on the floor plate portion 31E in the driver's cab 31, and left and right traveling levers 37, 38 located in the driver's cab 31 in front of the driver's seat 36. Operation levers 39 and 40 for front and turning operations are provided, and an operation panel 41 including various operation switches and meters is provided on the right side of the driver's seat 36. Reference numeral 42 denotes a fuel tank located on the rear side of the cab 31 and provided on the frame 2A. The left side of the fuel tank 42 has an inclined portion of the cab 31.
Inclined at an angle corresponding to the 31A 2, so that the door 32 is to compensate for being fully opened largely rearward.
本実施例による小型の油圧ショベルは上述の如き構成
を有するもので、その基本的作動については先行技術に
よるものと格別差異はない。The small-sized hydraulic excavator according to the present embodiment has the above-described configuration, and its basic operation is not particularly different from that of the prior art.
然るに本実施例では、運転室31のドア32が設けられる
側壁部31Aを略く字形状に大きく屈曲させ、その屈曲部3
A1を旋回半径Ｒの円20にほぼ内接する位置まで大きく張
出させたから、運転室31内を広くでき、側壁部31Aと運
転席36との間に比較的広いスペースを確保することがで
き、運転者がドア32を開いて運転室31内に乗り降りする
ときに、運転者の足が運転席36に当ったりするのを防止
でき、乗り降りをスムーズに行なうことができる。However, in the present embodiment, the side wall portion 31A on which the door 32 of the cab 31 is provided is largely bent into a substantially rectangular shape, and the bent portion 3A is formed.
Since A 1 is greatly extended to a position substantially inscribed in the circle 20 of the turning radius R, the inside of the cab 31 can be widened, and a relatively large space can be secured between the side wall 31A and the driver's seat 36. When the driver opens and closes the cab 31 by opening the door 32, the driver's feet can be prevented from hitting the driver's seat 36, and the driver can get on and off smoothly.
また、運転席36に着席したときに運転者に運転室31内
が広いという感じを与えて、圧迫感を与えるのを防止す
ることができ、運転時の疲労を大幅に軽減できる上に、
運転者の足元部分を広くすることができ、走行用レバー
37,38や操作レバー39,40等を比較的余裕をもて自由に操
作させることができ、操縦安定性等を向上させることが
できる。Further, when the driver sits in the driver's seat 36, the driver is given a feeling that the inside of the driver's cab 31 is wide, it is possible to prevent giving a feeling of oppression, and it is possible to greatly reduce fatigue during driving,
The driver's feet can be widened and the driving lever
37, 38, the operation levers 39, 40, and the like can be freely operated with a relatively large margin, and steering stability and the like can be improved.
さらに、ドア32を後方へと全開したときにはロック機
構７を係合突起８に係合させて、ドア32を全開状態にロ
ックしておくことができ、この状態でドア32を旋回半径
Ｒの円20内に収めることができ、旋回時にドア32が周囲
の障害物と衝突したりするのを防止できる上に、ドア32
は全開時に運転室31の側壁部31Aにロック機構７により
固定されるから、運転室31以外の振動がドア32に伝えら
れるのを防止でき、ドア32に余分な負荷が作用するのを
防止できる。Further, when the door 32 is fully opened rearward, the lock mechanism 7 can be engaged with the engagement projection 8 to lock the door 32 in the fully opened state. 20 to prevent the door 32 from colliding with surrounding obstacles when turning.
Is fixed to the side wall 31A of the cab 31 by the lock mechanism 7 when fully opened, so that vibrations other than the cab 31 can be prevented from being transmitted to the door 32, and an extra load can be prevented from acting on the door 32. .
以上詳細した通り、本発明によれば、ドアが設けられ
る運転室の側壁部を旋回半径Ｒの円内で略く字形状に大
きく張出させたから、運転室内を可及的に広くすること
ができ、運転席に着席したときの圧迫感を取除くことが
でき、運転時の疲労を確実に軽減できる。また、運転者
の足元部分を広くして、各操作レバーの操作を余裕をも
って行なうことができ、操縦安定性を向上できるうえ
に、運転室への乗り降りをスムーズに行なうことができ
る等、種々の効果を奏する。As described above in detail, according to the present invention, the side wall of the cab in which the door is provided is greatly extended in a substantially rectangular shape within the circle having the turning radius R, so that the cab can be made as wide as possible. It is possible to remove the feeling of oppression when sitting in the driver's seat, and it is possible to surely reduce fatigue during driving. In addition, the driver's feet can be widened so that the operation levers can be operated with a margin, and the steering stability can be improved, and the driver can get in and out of the driver's cab smoothly. It works.
第１図は本発明の実施例を示す運転室の横断面図、第２
図ないし第４図は先行技術を示し、第２図は油圧ショベ
ルの正面図、第３図は第２図の平面図、第４図は第２図
中のIV−IV矢示方向拡大断面図である。 １……下部走行体、２……上部旋回体、３……機械室、
19……カウンタウェイト、21……作業装置、 31……運転室、31A……側壁部、32……ドア、 36……運転席、42……燃料タンク。FIG. 1 is a transverse sectional view of a cab showing an embodiment of the present invention, and FIG.
FIG. 4 is a front view of a hydraulic shovel, FIG. 3 is a plan view of FIG. 2, and FIG. 4 is an enlarged cross-sectional view in the direction of arrows IV-IV in FIG. It is. 1 ... lower traveling structure, 2 ... upper revolving structure, 3 ... machine room,
19: Counterweight, 21: Working device, 31: Driver's cab, 31A: Side wall, 32: Door, 36: Driver's seat, 42: Fuel tank.
Claims (1)
に搭載され、機械室、運転室およびカウンタウェイトが
所定の旋回半径Ｒの円内に配設されるようになった上部
旋回体とからなる全旋回式作業機において、前記運転室
は該運転室内を可及的に広くすべく、開閉用のドアが設
けられる側壁部を前記旋回半径Ｒの円内で略く字形状に
大きく張出させたことを特徴とする全旋回式作業機。1. A lower traveling body and an upper swing which is mounted on the lower traveling body so as to be capable of turning, and wherein a machine room, an operator cab, and a counterweight are disposed within a circle having a predetermined turning radius R. In the full swing type working machine including the body, the cab is formed so that a side wall portion provided with an opening / closing door has a substantially rectangular shape within the circle having the turning radius R in order to make the cab as wide as possible. An all-turn type working machine characterized by a large overhang.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33142888A JP2657541B2 (en) | 1988-12-28 | 1988-12-28 | All-turn type work machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33142888A JP2657541B2 (en) | 1988-12-28 | 1988-12-28 | All-turn type work machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02178425A JPH02178425A (en) | 1990-07-11 |
| JP2657541B2 true JP2657541B2 (en) | 1997-09-24 |
Family
ID=18243557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33142888A Expired - Fee Related JP2657541B2 (en) | 1988-12-28 | 1988-12-28 | All-turn type work machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2657541B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100382823B1 (en) * | 1999-09-01 | 2003-05-09 | 가부시끼 가이샤 구보다 | Back hoe |
-
1988
- 1988-12-28 JP JP33142888A patent/JP2657541B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02178425A (en) | 1990-07-11 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |