JP3312026B2 - Backhoe - Google Patents
BackhoeInfo
- Publication number
- JP3312026B2 JP3312026B2 JP2001157780A JP2001157780A JP3312026B2 JP 3312026 B2 JP3312026 B2 JP 3312026B2 JP 2001157780 A JP2001157780 A JP 2001157780A JP 2001157780 A JP2001157780 A JP 2001157780A JP 3312026 B2 JP3312026 B2 JP 3312026B2
- Authority
- JP
- Japan
- Prior art keywords
- swivel
- crawler traveling
- boom
- traveling device
- side edges
- 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
- E02F9/02—Travelling-gear, e.g. associated with slewing gears
- E02F9/024—Travelling-gear, e.g. associated with slewing gears with laterally or vertically adjustable wheels or tracks
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/30—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom
- E02F3/301—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom with more than two arms (boom included), e.g. two-part boom with additional dipper-arm
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/30—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom
- E02F3/32—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom working downwardly and towards the machine, e.g. with backhoes
- E02F3/325—Backhoes of the miniature type
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Component Parts Of Construction Machinery (AREA)
Description
【0001】[0001]
【発明の属する技術分野】本発明は、左右揺動自在なブ
ームを有するバックホウに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a backhoe having a boom that can swing right and left.
【0002】[0002]
【従来の技術】従来技術のバックホウにおいては、左右
クローラ走行装置を有する走行機台に平面視略長方形の
旋回台を旋回自在に支持し、この旋回台の前部にスイン
グ支点を介して掘削作業装置のブームを左右揺動自在に
連結し、その掘削作業装置の後方の旋回台上に運転シー
トを配設し、旋回台の後部にエンジンを搭載してあり、
エンジンをエンジンボンネットで覆っている。2. Description of the Related Art In a conventional backhoe, a substantially rectangular swivel table in a plan view is supported on a traveling machine base having right and left crawler traveling devices so as to be able to swivel, and excavation work is performed at a front portion of the swivel table via a swing fulcrum. The boom of the device is connected swingably left and right, an operation seat is arranged on the swivel behind the excavation work device, and an engine is mounted at the rear of the swivel,
The engine is covered with an engine bonnet.
【0003】[0003]
【発明が解決しようとする課題】この種のバックホウで
は、近年、旋回台の後部の旋回半径を小さくすること
で、狭い場所での作業性を高めることが求められている
が、上述した一般的な旋回台構造においては、旋回台は
前向き姿勢時において、後部が左右クローラ走行装置の
後部よりも大きく突出しており、この旋回台を90度旋
回して横向き姿勢にすると、後部が左右クローラ走行装
置の左右最外側端よりも大きく突出するようになってい
る。In this type of backhoe, in recent years, it has been required to improve the workability in a narrow place by reducing the turning radius at the rear of the turning table. In such a turntable structure, when the turntable is in the forward position, the rear portion of the turntable projects more than the rear portion of the left and right crawler traveling device. Of the left and right outermost ends.
【0004】すなわち、旋回台は前後方向長さが長く、
旋回半径は左右クローラ走行装置の前後端及び左右外側
端よりも大きく突出する形状となっており、左右クロー
ラ走行装置と略同一幅の狭い所(狭隘地)では、侵入し
ても構造物等が障害になって旋回台が旋回し得ず、掘削
作業をすることが困難になっている。ところで、この種
のバックホウでは、側溝掘り等を行うとき、ブームを左
右揺動しながら旋回台を旋回することがあり、クローラ
走行装置の前後方向に対する旋回台の旋回角度及びブー
ム左右揺動角度、旋回台に対するブーム左右揺動角度、
等を旋回台上の運転者が容易に認知できることが要求さ
れる。That is, the turntable has a long longitudinal direction,
The turning radius has a shape that protrudes more than the front and rear ends and the left and right outer ends of the left and right crawler traveling devices. In a narrow place (narrow ground) having substantially the same width as the left and right crawler traveling devices, structures and the like can enter even if they enter. As a result, the swivel base cannot turn, which makes it difficult to perform excavation work. By the way, in this type of backhoe, when performing a side ditch or the like, the swivel may be swiveled while swinging the boom left and right, and the swivel angle and the boom left and right swing angle with respect to the front-rear direction of the crawler traveling device, Boom left / right swing angle with respect to the swivel,
It is required that the driver on the swivel base can easily recognize the information.
【0005】本発明は、前記従来技術の問題点を解消で
き、かつ前記要求を十分満たすことのできるバックホウ
を提供することを目的とする。本発明は、旋回台の旋
回、ブームの揺動等の視認性を確保したうえで、エンジ
ンカバー及び運転シートの前後配置をコンパクトにし、
さらに旋回台を旋回しても、旋回台が左右クローラ走行
装置内に略収って非突出状態になるように構成すること
によって、構造物等への近接、狭所作業性及び安定性を
向上できるようにしたバックホウを提供することを目的
とする。[0005] It is an object of the present invention to provide a backhoe that can solve the above-mentioned problems of the prior art and can sufficiently satisfy the above demands. The present invention, while ensuring the visibility of swiveling of the swivel, swinging of the boom, etc., makes the front and rear arrangement of the engine cover and the driving seat compact,
Furthermore, even if the swivel base is turned, the swivel base is configured to be substantially contained in the left and right crawler traveling devices and is in a non-projecting state, thereby improving the proximity to structures, workability in narrow places, and stability. An object is to provide a backhoe that can be used.
【0006】[0006]
【課題を解決するための手段】本発明における課題解決
のための第1の具体的手段は、左右方向の轍間距離を可
変とした左右クローラ走行装置2を有する走行機台3に
旋回台4を旋回自在に設け、この旋回台4の後部上に旋
回台4からはみ出さない状態のエンジンカバー6を上方
突出配置しかつこのエンジンカバー6上に運転シート5
を設け、前記旋回台4の前部でかつ運転シート5の前方
に左右揺動自在なブーム7を有する掘削作業装置1を設
け、前記ブーム7の後側でかつ運転シート5の前側の旋
回台4前上面に左右側方に延びるステップ面37を形成
し、旋回台4に前向き姿勢時に運転シート5の左右側方
で前後方向に沿う左右側縁部30L、30Rを形成しか
つこの左右側縁部30L、30Rを最小轍間距離にした
左右クローラ走行装置2の外側端部から左右外方に非突
出状態とし、旋回台4の後端31を円弧状に形成しかつ
前向き姿勢時にクローラ走行装置2の後端から後外方に
非突出状態に設定していることである。A first concrete means for solving the problem in the present invention is to provide a traveling machine base 3 having a left and right crawler traveling device 2 with a variable distance between ruts in the left and right direction on a swivel base 4. The engine cover 6 which does not protrude from the turntable 4 is disposed above the rear portion of the turntable 4 so as to be pivotable, and an operation seat 5 is provided on the engine cover 6.
And an excavating work device 1 having a boom 7 that can swing left and right is provided in front of the swivel base 4 and in front of the operation seat 5, and a swivel base behind the boom 7 and in front of the operation seat 5 is provided. 4 A step surface 37 extending left and right sides is formed on the front upper surface, and left and right side edges 30L and 30R are formed on the swivel base 4 along the front and rear directions on the left and right sides of the driver's seat 5 in a forward posture. The left and right crawler traveling devices 2 are formed in a non-projecting state from the outer end of the left and right crawler traveling device 2 with the portions 30L and 30R at the minimum rut distance. 2 is set so as not to protrude rearward and outward from the rear end.
【0007】これによって、運転者はエンジンカバー6
上の運転シート5に着座して、ブーム7を旋回台4に対
して左右揺動したり、旋回台4を左右側縁部30L、3
0Rで姿勢を視認しながら旋回でき、前向き姿勢から旋
回しても、旋回台4の後端31は左右クローラ走行装置
2の最外側端32L、32Rから突出することがなく、
左右クローラ走行装置2を構造物等へより近づけて作業
ができる。本発明における課題解決のための第2の具体
的手段は、左右方向の轍間距離を可変とした左右クロー
ラ走行装置2を有する走行機台3に旋回台4を旋回自在
に設け、この旋回台4の後部上に旋回台4からはみ出さ
ない状態のエンジンカバー6を上方突出配置しかつこの
エンジンカバー6上に運転シート5を設け、前記旋回台
4を平面視において前向き姿勢時に運転シート5の左右
側方で前後方向に沿う左右側縁部30L、30Rを有す
る略多角形状に形成し、旋回台4の前部でかつ運転シー
ト5の前方に左右揺動自在なブーム7を有する掘削作業
装置1を設け、前記ブーム7の後側でかつ運転シート5
の前側の旋回台4前上面に左右側縁部30L、30Rに
至るステップ面37を形成し、旋回台4の後端31を円
弧状に形成しかつ90度旋回した横向き姿勢時に最大轍
間距離にしたときのクローラ走行装置2の最外側端32
L、32Rより内側に位置させていることである。[0007] Thereby, the driver can use the engine cover 6.
While sitting on the upper driving seat 5, the boom 7 is swung left and right with respect to the swivel table 4, and the swivel table 4 is moved to the left and right side edges 30L, 3L.
It is possible to turn while visually recognizing the posture at 0R, and even when turning from the forward posture, the rear end 31 of the turntable 4 does not protrude from the outermost ends 32L, 32R of the left and right crawler traveling device 2,
The left and right crawler traveling device 2 can be worked closer to a structure or the like. A second concrete means for solving the problem in the present invention is that a swivel base 4 is rotatably provided on a traveling machine base 3 having a left and right crawler traveling device 2 capable of varying a rut distance in the left and right direction. An engine cover 6 that does not protrude from the swivel 4 is disposed above the rear of the swivel 4 and an operation seat 5 is provided on the engine cover 6. Excavation work device formed in a substantially polygonal shape having left and right side edges 30L and 30R along the front-rear direction on the left and right sides, and having a boom 7 that can swing left and right in front of the swivel base 4 and in front of the operation seat 5. 1 on the rear side of the boom 7 and the driving seat 5
A step surface 37 extending to the left and right side edges 30L and 30R is formed on the front upper surface of the turntable 4 on the front side, and the rear end 31 of the turntable 4 is formed in an arc shape. Outermost end 32 of the crawler traveling device 2 when
L, 32R.
【0008】これによって、運転者はエンジンカバー6
上の運転シート5に着座して、ブーム7を旋回台4に対
して左右揺動したり、旋回台4を左右側縁部30L、3
0Rで姿勢を視認しながら旋回でき、前向き姿勢から9
0度旋回した横向き姿勢にしても、旋回台4の後端31
は左右クローラ走行装置2の最外側端32L、32Rよ
り内側に位置していて突出することがなく、左右クロー
ラ走行装置2を構造物等へより近づけて作業ができる。
本発明における課題解決のための第3の具体的手段は、
左右方向の轍間距離を可変とした左右クローラ走行装置
2を有する走行機台3に旋回台4を旋回自在に設け、こ
の旋回台4の後部上に旋回台4からはみ出さない状態の
エンジンカバー6を上方突出配置しかつこのエンジンカ
バー6上に運転シート5を設け、前記旋回台4を平面視
において前向き姿勢時に運転シート5の左右側方で前後
方向に沿う左右側縁部30L、30Rを有する略多角形
状に形成し、旋回台4の前部でかつ運転シート5の前方
にスイング支点Pを介して掘削作業装置1のブーム7を
左右揺動自在に設け、前記ブーム7の後側でかつ運転シ
ート5の前側の旋回台4前上面に左右側縁部30L、3
0Rに至るステップ面37を形成し、旋回台4の後端3
1を円弧状に形成しかつ旋回台4のスイング支点Pから
円弧状後端31までの範囲を90度旋回した横向き姿勢
時に最大轍間距離にしたときの左右クローラ走行装置2
の最外側端32L、32R間の範囲内に略収めているこ
とである。As a result, the driver can use the engine cover 6
While sitting on the upper driving seat 5, the boom 7 is swung left and right with respect to the swivel table 4, and the swivel table 4 is moved to the left and right side edges 30L, 3L.
You can turn while visually recognizing the posture at 0R, and from the forward posture 9
The rear end 31 of the swivel 4 can be set even if it is turned sideways by 0 degrees.
Is located inside the outermost ends 32L and 32R of the left and right crawler traveling device 2 and does not protrude, so that the work can be performed with the left and right crawler traveling device 2 closer to a structure or the like.
A third specific means for solving the problem in the present invention is:
A swivel 4 is rotatably provided on a traveling machine base 3 having a left and right crawler traveling device 2 having a variable left-right crawler travel distance, and an engine cover that does not protrude from the swivel 4 on the rear of the swivel 4. 6 is provided on the engine cover 6, and the driving seat 5 is provided on the engine cover 6. When the swivel base 4 is in a forward facing posture in plan view, the left and right side edges 30L and 30R along the front and rear sides of the driving seat 5 are formed. The boom 7 of the excavating work device 1 is provided at the front of the swivel base 4 and in front of the operation seat 5 via a swing fulcrum P so as to be swingable right and left. The left and right side edges 30L, 3
Forming a step surface 37 leading to the rear end 3 of the swivel 4
1 is formed in an arc shape, and the right and left crawler traveling device 2 when the range from the swing fulcrum P of the swivel table 4 to the arc-shaped rear end 31 is set to the maximum rut distance in the horizontal posture in which it is turned 90 degrees.
In the range between the outermost ends 32L and 32R.
【0009】これによって、運転者はエンジンカバー6
上の運転シート5に着座して、ブーム7を旋回台4に対
して左右揺動したり、旋回台4を左右側縁部30L、3
0Rで姿勢を視認しながら旋回でき、前向き姿勢から9
0度旋回した横向き姿勢にしても、旋回台4のスイング
支点Pから後端31までの略全長は、左右クローラ走行
装置2の最外側端32L、32Rより内側に位置してい
て突出することがなく、左右クローラ走行装置2を構造
物等へより近づけて作業ができる。本発明における課題
解決のための第4の具体的手段は、左右方向の轍間距離
を可変とした左右クローラ走行装置2を有する走行機台
3に旋回台4を旋回自在に設け、この旋回台4の後部上
に旋回台4からはみ出さない状態のエンジンカバー6を
上方突出配置しかつこのエンジンカバー6上に運転シー
ト5を設け、前記旋回台4に前向き姿勢時に運転シート
5の左右側方で前後方向に沿う左右側縁部30L、30
Rを形成しかつこの左右側縁部30L、30Rを前向き
姿勢時に最小轍間距離にした左右クローラ走行装置2の
外側端部から左右外方に非突出状態とし、旋回台4の前
部に左右側縁部30L、30Rと略直交する方向の前面
33を形成すると共にその前面33でかつ運転シート5
の前方に左右揺動自在なブーム7を有する掘削作業装置
1を設け、前記ブーム7の後側でかつ運転シート5の前
側の旋回台4前上面に左右側縁部30L、30Rに至る
ステップ面37を形成し、旋回台4の後端31を円弧状
に形成し、左右側縁部30L、30Rと前面33との間
の前左右コーナ部34L、34Rに面取り面を形成し、
旋回中心Zから旋回台4の後端31及び前左右コーナ部
34L、34Rまでの距離を旋回中心Zから最大轍間距
離にしたときのクローラ走行装置2の最外側端32L、
32Rまでの距離dmax以下に設定していることであ
る。As a result, the driver can use the engine cover 6
While sitting on the upper driving seat 5, the boom 7 is swung left and right with respect to the swivel table 4, and the swivel table 4 is moved to the left and right side edges 30L, 3L.
You can turn while visually recognizing the posture at 0R, and from the forward posture 9
Even in the horizontal posture in which the turntable 4 is turned by 0 degrees, the substantially entire length from the swing fulcrum P of the turntable 4 to the rear end 31 is located inside the outermost ends 32L and 32R of the left and right crawler traveling devices 2 and may protrude. Therefore, the work can be performed with the left and right crawler traveling device 2 closer to a structure or the like. A fourth specific means for solving the problem in the present invention is that a swivel 4 is provided on a traveling machine base 3 having a left and right crawler traveling device 2 having a variable left-to-right rut distance, and the swivel is provided. An engine cover 6 that does not protrude from the swivel 4 is disposed above the rear of the swivel 4 and an operation seat 5 is provided on the engine cover 6. The left and right side edges 30L, 30 along the front-rear direction
The left and right side edge portions 30L and 30R are not protruded left and right outward from the outer ends of the left and right crawler traveling device 2 having the minimum distance between the ruts in the forward posture. A front surface 33 is formed in a direction substantially orthogonal to the side edges 30L, 30R, and the front surface 33 and the driving seat 5
The excavation work device 1 having the boom 7 which can swing left and right is provided in front of the vehicle, and the step surface reaching the left and right side edges 30L and 30R on the upper surface of the revolving base 4 behind the boom 7 and in front of the driving seat 5 is provided. 37, the rear end 31 of the swivel 4 is formed in an arc shape, and a chamfered surface is formed in the front left and right corner portions 34L, 34R between the left and right side edges 30L, 30R and the front surface 33,
The outermost end 32L of the crawler traveling device 2 when the distance from the turning center Z to the rear end 31 of the turntable 4 and the front left and right corner portions 34L, 34R is the maximum distance between the turning center Z and the rut,
That is, the distance is set to be equal to or less than the distance dmax up to 32R.
【0010】これによって、運転者はエンジンカバー6
上の運転シート5に着座して、ブーム7を旋回台4に対
して左右揺動したり、旋回台4を左右側縁部30L、3
0Rで姿勢を視認しながら旋回でき、前向き姿勢から旋
回しても、旋回台4の前面33、前左右コーナ部34
L、34R及び後端31を含む全周囲は、左右クローラ
走行装置2の最外側端32L、32Rから突出すること
がなく、左右クローラ走行装置2を構造物等へより近づ
けて作業ができる。本発明における課題解決のための第
5の具体的手段は、左右方向の轍間距離を可変とした左
右クローラ走行装置2を有する走行機台3に旋回台4を
旋回自在に設け、この旋回台4の後部上に旋回台4から
はみ出さない状態のエンジンカバー6を上方突出配置し
かつこのエンジンカバー6上に運転シート5を設け、前
記旋回台4を平面視において前向き姿勢時に運転シート
5の左右側方で前後方向に沿う左右側縁部30L、30
Rを有する略多角形状に形成し、旋回台4の前部でかつ
運転シート5の前方に左右揺動自在なブーム7を有する
掘削作業装置1を設け、前記ブーム7の後側でかつ運転
シート5の前側の旋回台4前上面に左右側縁部30L、
30Rに至るステップ面37を形成し、旋回台4の前部
と左右側縁部30L、30Rとの間に前左右コーナ部3
4L、34Rを形成し、旋回台4の後端31及び前左右
コーナ部34L、34Rを円弧状に形成しかつ360度
の旋回範囲内で最大轍間距離にしたときのクローラ走行
装置2の最外側端32L、32Rより内側に位置させて
いることである。[0010] Thereby, the driver can use the engine cover 6.
While sitting on the upper driving seat 5, the boom 7 is swung left and right with respect to the swivel table 4, and the swivel table 4 is moved to the left and right side edges 30L, 3L.
The user can turn while visually recognizing the posture at 0R, and even when turning from a forward posture, the front surface 33 of the swivel 4 and the front left and right corner portions 34.
The entire circumference including L, 34R and the rear end 31 does not protrude from the outermost ends 32L, 32R of the left and right crawler traveling device 2, and the work can be performed with the left and right crawler traveling device 2 closer to a structure or the like. A fifth concrete means for solving the problem in the present invention is that a swivel 4 is provided on a traveling machine base 3 having a left and right crawler traveling device 2 capable of changing a left-to-right rut distance, An engine cover 6 that does not protrude from the swivel 4 is disposed above the rear of the swivel 4 and an operation seat 5 is provided on the engine cover 6. Left and right side edges 30L, 30 along the front-rear direction on the left and right sides
An excavation work apparatus 1 having a boom 7 which is formed in a substantially polygonal shape having a radius R, and which can swing right and left in front of the swivel table 4 and in front of the operation seat 5 is provided. 5 left and right side edge portions 30L on the front upper surface of the swivel 4 on the front side of 5;
A step surface 37 is formed to reach the front left and right corner portions 3L and 30R between the front portion of the swivel 4 and the left and right side edge portions 30L and 30R.
4L, 34R, the rear end 31 of the swivel 4 and the front left and right corners 34L, 34R are formed in an arc shape, and the crawler traveling device 2 has the maximum distance between the ruts within a 360-degree turning range. That is, it is located inside the outer ends 32L and 32R.
【0011】これによって、運転者はエンジンカバー6
上の運転シート5に着座して、ブーム7を旋回台4に対
して左右揺動したり、旋回台4を左右側縁部30L、3
0Rで姿勢を視認しながら旋回でき、360度旋回して
も、旋回台4の前面33、前左右コーナ部34L、34
R及び後端31を含む全周囲は、左右クローラ走行装置
2の最外側端32L、32Rより内側に位置していて突
出することがなく、左右クローラ走行装置2を構造物等
へより近づけて作業ができる。本発明における課題解決
のための第6の具体的手段は、左右方向の轍間距離を可
変とした左右クローラ走行装置2を有する走行機台3に
旋回台4を旋回自在に設け、この旋回台4の後部上に旋
回台4からはみ出さない状態のエンジンカバー6を上方
突出配置しかつこのエンジンカバー6上に運転シート5
を設け、前記旋回台4を平面視において前向き姿勢時に
運転シート5の左右側方で前後方向に沿う左右側縁部3
0L、30Rを有する略多角形状に形成し、旋回台4の
前部でかつ運転シート5の前方にスイング支点Pを介し
て掘削作業装置1のブーム7を左右揺動自在に設け、前
記ブーム7の後側でかつ運転シート5の前側の旋回台4
前上面に左右側縁部30L、30Rに至るステップ面3
7を形成し、旋回台4の前部と左右側縁部30L、30
Rとの間に前左右コーナ部34L、34Rを形成し、旋
回台4の後端31を旋回中心Zから最大轍間距離にした
ときのクローラ走行装置2の最外側端32L、32Rま
での距離dmaxより小さい半径の円弧状に形成し、前
左右コーナ部34L、34R及びスイング支点Pを円弧
状後端31を通る仮想円35の範囲内に略収めているこ
とである。Thus, the driver can use the engine cover 6
While sitting on the upper driving seat 5, the boom 7 is swung left and right with respect to the swivel table 4, and the swivel table 4 is moved to the left and right side edges 30L, 3L.
The operator can turn while visually recognizing the posture at 0R, and even when turning 360 degrees, the front surface 33 of the swivel 4 and the front left and right corner portions 34L, 34.
The entire periphery including the R and the rear end 31 is located inside the outermost ends 32L and 32R of the left and right crawler traveling device 2 and does not protrude, so that the left and right crawler traveling device 2 is brought closer to a structure or the like. Can be. A sixth concrete means for solving the problem in the present invention is to provide a swivel 4 on a traveling machine base 3 having a left and right crawler traveling device 2 capable of changing a rut distance in the left and right directions, and to turn the swivel 4 An engine cover 6 which does not protrude from the swivel 4 is disposed above the rear portion of the turntable 4 so as to protrude upward.
The left and right side edges 3 along the front-rear direction on the left and right sides of the driving seat 5 when the swivel base 4 is in the forward posture in plan view.
0L, 30R, a boom 7 of the excavating work device 1 is provided at the front of the swivel base 4 and in front of the driving seat 5 via a swing fulcrum P so as to be able to swing left and right. The swivel 4 at the rear of the vehicle and at the front of the driving seat 5
Step surface 3 reaching left and right side edges 30L and 30R on the front upper surface
7, the front part of the swivel 4 and the left and right side edges 30L, 30
R, the front left and right corners 34L, 34R are formed, and the distance from the turning center Z to the outermost ends 32L, 32R of the crawler traveling device 2 when the rear end 31 of the turning table 4 is set to the maximum distance between ruts. It is formed in an arc shape having a radius smaller than dmax, and the front left and right corner portions 34L and 34R and the swing fulcrum P are substantially contained within a virtual circle 35 passing through the arc-shaped rear end 31.
【0012】これによって、運転者はエンジンカバー6
上の運転シート5に着座して、ブーム7を旋回台4に対
して左右揺動したり、旋回台4を左右側縁部30L、3
0Rで姿勢を視認しながら旋回でき、360度旋回して
も、旋回台4のスイング支点P、前左右コーナ部34
L、34R及び後端31を含む全周囲は、円弧状後端3
1を通る仮想円35の範囲内に位置し、左右クローラ走
行装置2の最外側端32L、32Rから突出することが
なく、左右クローラ走行装置2を構造物等へより近づけ
て作業ができる。Thus, the driver can use the engine cover 6
While sitting on the upper driving seat 5, the boom 7 is swung left and right with respect to the swivel table 4, and the swivel table 4 is moved to the left and right side edges 30L, 3L.
The user can turn while visually recognizing the posture at 0R, and even when turning 360 degrees, the swing fulcrum P of the swivel 4 and the front left and right corner portions 34
L, 34R and the entire periphery including the rear end 31 are arc-shaped rear ends 3
1 and does not protrude from the outermost ends 32L and 32R of the left and right crawler traveling devices 2 and can work with the left and right crawler traveling devices 2 closer to a structure or the like.
【0013】本発明における課題解決のための第7の具
体的手段は、前向き姿勢時の旋回台4の左右側縁部30
L、30Rと最大轍間距離にしたときの左右クローラ走
行装置2の最外側端32L、32Rとの間の左右クロー
ラ走行装置5上に前後方向及び上方向に開放された空間
36を有していることである。これによって、旋回台4
の前上面のステップ面37と左右側縁部30L、30R
側の空間36との間での通行が可能になる。A seventh concrete means for solving the problem in the present invention is the left and right side edges 30 of the swivel table 4 in the forward posture.
L, 30R and the outermost ends 32L, 32R of the left and right crawler traveling device 2 when the distance between the left and right crawler traveling devices is set to the maximum rut distance. It is that you are. Thereby, the swivel 4
Step surface 37 on the front upper surface and left and right side edges 30L, 30R
Passage to and from the side space 36 is enabled.
【0014】[0014]
【発明の実施の形態】以下、本発明の実施の形態を図面
に基づいて説明する。図3において、超小型のバックホ
ウが示され、1は掘削作業装置、2はクローラ走行装
置、3は走行機台、4は旋回台、5は運転シート、6は
エンジンボンネット(エンジンカバー)である。掘削作
業装置1は、旋回台4に上下支点Pで左右揺動可能なス
イングブラケット10、このスイングブラケット10に
枢支連結されたブーム7と、ブーム7に枢支連結された
アーム8と、アーム8に枢支連結されたバケット9とを
備えて構成されている。尚、7cはブームシリンダ、8
cはアームシリンダ、9cはバケットシリンダをそれぞ
れ示している。Embodiments of the present invention will be described below with reference to the drawings. In FIG. 3, an ultra-small backhoe is shown, 1 is an excavating work device, 2 is a crawler traveling device, 3 is a traveling machine platform, 4 is a swivel platform, 5 is an operation seat, and 6 is an engine hood (engine cover). . The excavation work apparatus 1 includes a swing bracket 10 that can swing left and right at a vertical fulcrum P on a swivel 4, a boom 7 pivotally connected to the swing bracket 10, an arm 8 pivotally connected to the boom 7, and an arm. 8 and a bucket 9 pivotally connected to the bucket 8. 7c is a boom cylinder, 8
c indicates an arm cylinder, and 9c indicates a bucket cylinder.
【0015】このバックホウでは、ブーム7を、基端側
の第1ブーム部分7Aと先端側の第2ブーム部分7Bと
を横軸心Xで連結した2分割構造に構成されている。ブ
ーム7は、先端にアーム8が装着された第2ブーム部分
7Bと、基端がスイングブラケット10に支持された第
1ブーム部分7Aとを横支点X回りで揺動自在に枢支連
結して構成してあるとともに、第1ブーム部分7Aと第
2ブーム部分7Bとに亘ってブーム中折れ用の挟角調節
シリンダ7kが装備されている。又、スイングブラケッ
ト10と第1ブーム部分7Aとの枢支連結点に、これら
両者10、7Aの相対角度を検出するポテンショメータ
11を装備してあり、このポテンショメータ11の検出
情報に基づいて挟角調節シリンダ7kを伸縮駆動させる
ブーム挟角自動調節手段Aが装備されている。In this backhoe, the boom 7 has a two-part structure in which a first boom portion 7A on the proximal end and a second boom portion 7B on the distal end are connected by a horizontal axis X. The boom 7 pivotally connects a second boom portion 7B having an arm 8 attached to a distal end thereof and a first boom portion 7A having a proximal end supported by a swing bracket 10 so as to be swingable about a lateral fulcrum X. In addition to the above configuration, an angle adjusting cylinder 7k for bending the boom is provided between the first boom portion 7A and the second boom portion 7B. A potentiometer 11 for detecting a relative angle between the swing bracket 10 and the first boom portion 7A is provided at a pivot connection point between the swing bracket 10 and the first boom portion 7A. A boom included angle automatic adjusting means A for driving the cylinder 7k to expand and contract is provided.
【0016】図5に示すように、挟角調節シリンダ7k
の電磁制御弁12とポテンショメータ11とを制御装置
13に接続することでブーム挟角自動調節手段Aが構成
されている。ブーム挟角自動調節手段Aの作用は、図4
(ロ)に示すように、ブーム7がほぼ上下中間の高さ位
置にあり、バケット9が最も旋回台4から前方に遠ざか
った水平姿勢では、第1ブーム部分7Aと第2ブーム部
分7Bとの挟角θC が最も狭くなる。図4(イ)に示す
ブーム7が最も上昇した旋回姿勢での挟角θU と、図4
(ハ)に示すブーム7が最も下降した掘削姿勢との両姿
勢での挟角θD とがほぼ同じ角度であり、かつ、最も広
くなるよう、θC <θU ≒θD の関係が成り立つ状態に
設定されている。そして、上記挟角は滑らかに変化する
よう制御装置13が機能する。As shown in FIG. 5, the included angle adjusting cylinder 7k
By connecting the electromagnetic control valve 12 and the potentiometer 11 to the control device 13, the boom angle automatic adjusting means A is constituted. The operation of the boom included angle automatic adjusting means A is shown in FIG.
As shown in (b), in a horizontal position where the boom 7 is located at a substantially middle position in the vertical direction and the bucket 9 is farthest away from the swivel table 4 in the most forward position, the first boom portion 7A and the second boom portion 7B do not move together. The included angle θ C becomes the narrowest. FIG. 4A shows the included angle θ U in the swiveling posture in which the boom 7 is raised most.
The relationship of θ C <θ U ≒ θ D is established so that the included angle θ D in the two positions with the excavation position in which the boom 7 shown in FIG. Set to state. The control device 13 functions so that the included angle changes smoothly.
【0017】従って、バケット9先端の移動軌跡を比べ
ると、同図に示すよう、従来の軌跡Jに対して、本発明
のブーム構造による移動軌跡Kは、その上下端部分は従
来移動軌跡Jと同じ位置でありながら、ブーム水平姿勢
部分を含む上下中間部においては旋回台4側に明らかに
寄ったものとなっているのが理解できる。図1、2に示
すように、左右のクローラ走行装置2、2は、その轍間
距離(トレッド)が所定範囲で変更可能に構成されてお
り、一方、旋回台4は、その後端形状が旋回中心Zを中
心とした円弧状に形成されるとともに、左右側面は直線
で互いに平行にカットされ、かつ、旋回軸心Zとの左右
方向距離を、旋回台後端の旋回半径よりも小なる値に設
定してある。Accordingly, comparing the movement trajectory of the tip end of the bucket 9, as shown in FIG. It can be understood that the upper and lower intermediate portions including the boom horizontal posture portion are clearly shifted toward the swivel table 4 even at the same position. As shown in FIGS. 1 and 2, the crawler traveling devices 2 and 2 on the left and right are configured so that the distance between the tracks (tread) can be changed within a predetermined range. The left and right sides are cut in a straight line and parallel to each other while being formed in an arc shape centered on the center Z, and the distance in the left and right direction with respect to the turning axis Z is smaller than the turning radius at the rear end of the turning table. Is set to
【0018】したがって、旋回台4は、掘削作業装置1
との重量バランスから、その後端が最大旋回半径となる
ように設定するものであるが、旋回台4の左右幅にはそ
のような制約がなく、その幅を最大旋回直径よりも狭く
することが可能で、走行時における通過可能範囲をより
大きく設定することができ、前向き姿勢時に旋回台4の
後端31が左右のクローラ走行装置2の後端から後方へ
突出しないように設定されている。前記走行機台3は、
図6、7に示すように、旋回台4を旋回可能に支持する
支持基台15と、該支持基台15に対して左右方向に摺
動自在に備えた左右の車輪フレーム16とを有してい
る。Therefore, the swivel base 4 is provided with the excavating work device 1.
From the weight balance of the above, the rear end is set so as to have the maximum turning radius, but there is no such restriction on the left and right width of the swivel 4 and the width can be made smaller than the maximum turning diameter. It is possible to set a larger range in which the vehicle can pass when traveling, so that the rear end 31 of the swivel base 4 does not project rearward from the rear ends of the left and right crawler traveling devices 2 in the forward posture. The traveling machine base 3 includes:
As shown in FIGS. 6 and 7, a support base 15 for rotatably supporting the turntable 4 and left and right wheel frames 16 slidably provided in the left and right direction with respect to the support base 15 are provided. ing.
【0019】車輪フレーム16には、油圧モータ17に
より駆動可能な駆動輪18、従動輪19及び転動輪20
が夫々支持されており、これら駆動輪18、従動輪19
及び転動輪20に無端状の履帯が巻掛られて左右クロー
ラ走行装置2、2が構成されている。車輪フレーム16
の左右方向内側面には、内方に向けて突出状に設けられ
た角パイプ等よりなる前後対の取付フレーム21を有し
ている。この取付フレーム21を、支持基台15に設け
た前後対の筒状のガイドフレーム15aに摺動自在に挿
通することで支持基台15に車輪フレーム16が支持さ
れている。The wheel frame 16 has a driving wheel 18, a driven wheel 19 and a rolling wheel 20 which can be driven by a hydraulic motor 17.
Are respectively supported, and the driving wheel 18 and the driven wheel 19 are supported.
An endless crawler belt is wound around the rolling wheel 20 to form the left and right crawler traveling devices 2 and 2. Wheel frame 16
A pair of front and rear mounting frames 21 made of a square pipe or the like provided in a protruding shape inward are provided on the inner surface in the left-right direction. The wheel frame 16 is supported on the support base 15 by slidably inserting the mounting frame 21 into a pair of front and rear tubular guide frames 15 a provided on the support base 15.
【0020】前記支持基台15には、ガイドフレーム1
5aの筒内部に向けて下方に突出状に係合突部22を設
けるとともに、前記取付フレーム21のそれぞれには係
合突部22が挿通、係合する左右方向に長い長孔状の被
係合部23を形成しており、該被係合部23が係合部2
2と係合することで、取付フレーム21のガイドフレー
ム15aに対しての摺動範囲、即ち、左右クローラ走行
装置2、2の支持基台15及び旋回台4に対する左右方
向の位置変更範囲を設定するようにしている。前記走行
機台3における車輪フレーム16の内側面間には、油圧
シリンダ等よりなる伸縮シリンダ24を介設しており、
この伸縮シリンダ24の伸縮により、左右クローラ走行
装置2、2の轍間距離を変更可能としている。The guide frame 1 is mounted on the support base 15.
An engagement projection 22 is provided in a protruding manner downward toward the inside of the cylinder 5a, and a long hole-shaped engagement member is inserted into and engaged with each of the mounting frames 21 in the left-right direction. A mating portion 23 is formed, and the engaged portion 23 is
2, a sliding range of the mounting frame 21 with respect to the guide frame 15 a, that is, a position changing range of the left and right crawler traveling devices 2, 2 with respect to the support base 15 and the revolving base 4 in the left-right direction is set. I am trying to do it. A telescopic cylinder 24 such as a hydraulic cylinder is provided between the inner surfaces of the wheel frame 16 in the traveling machine base 3.
By the expansion and contraction of the telescopic cylinder 24, the distance between the ruts of the left and right crawler traveling devices 2, 2 can be changed.
【0021】図2には、左右クローラ走行装置2、2の
轍間距離を最大とした場合を示しており、この際の旋回
中心Zから左右クローラ走行装置2、2の左右方向外側
端までの距離(=dmax )は、旋回台4における最大旋
回半径(=Rmax )に対して略対応、即ちやや広幅とな
っている。従って、掘削作業中等において旋回台4を旋
回させた際には、左右クローラ走行装置2、2の轍間距
離(=dmax ×2)内で旋回可能となり、狭い作業地等
においても周囲のものと接触することがないようにして
おり、このような場合での旋回操作に気を煩わすことが
ないようにしている。FIG. 2 shows the case where the distance between the ruts of the left and right crawler traveling devices 2 and 2 is maximized. In this case, the distance from the turning center Z to the left and right outer ends of the left and right crawler traveling devices 2 and 2 is shown. The distance (= d max ) substantially corresponds to the maximum turning radius (= R max ) of the swivel 4, that is, slightly wide. Therefore, when the turntable 4 is turned during excavation work or the like, the turntable 4 can be turned within the distance between the tracks of the left and right crawler traveling devices 2 and 2 (= dmax × 2), and even in a narrow work place or the like. So that the user does not have to worry about the turning operation in such a case.
【0022】また、旋回台4を横向きに旋回させての左
右クローラ走行装置2、2の側方での掘削作業や側溝堀
作業等においては、このように左右クローラ走行装置
2、2の轍間距離を最大とすることで、掘削作業機側の
クローラ走行装置と作業機車体の重心位置との距離を大
とすることができ、したがって、掘削作業機側のクロー
ラ走行装置を支点とした作業機車体側のモーメントが大
となって、その分掘削力を増大させ、掘削性を向上でき
るし、この横向き姿勢のとき、旋回台4の後端31が左
右のクローラ走行装置2の側縁部30L、30Rから突
出しないように設定されている。In the excavation work and the trench excavation work at the side of the left and right crawler traveling devices 2 and 2 by turning the swivel table 4 sideways, the rut between the left and right crawler traveling devices 2 and 2 is used. By maximizing the distance, the distance between the crawler traveling device on the side of the excavator and the position of the center of gravity of the work machine body can be increased. The moment on the body side is increased, the excavating force can be increased by that much, and the excavating ability can be improved. In this sideways posture, the rear end 31 of the swivel base 4 has the side edges 30L of the left and right crawler traveling devices 2, It is set so as not to protrude from 30R.
【0023】図1には、左右クローラ走行装置2、2の
轍間距離を最小とした場合を示しており、この際の旋回
中心Zから左右クローラ走行装置2、2の左右方向外側
端までの距離(=dmin )は、旋回中心Zから旋回台4
の左右方向外側端部までの距離(=d' )に対して略対
応、即ちやや広幅となっている。従って、このように左
右クローラ走行装置2、2の轍間距離を最小とすること
で、狭い通路等の走行に適した状態となるとともに、ク
ローラ走行装置2、2が通過可能な通路幅においては旋
回台4は必ず通過可能となって車体全体が壁や塀等に接
触することなく通過できることとなり、このような通過
可否の判断を容易に行うことができる。FIG. 1 shows a case where the distance between the ruts of the left and right crawler traveling devices 2 and 2 is minimized. In this case, the distance from the turning center Z to the left and right outer ends of the left and right crawler traveling devices 2 and 2 is shown. The distance (= d min ) is from the turning center Z to the turntable 4.
Substantially corresponds to the distance (= d ') to the outer end in the left-right direction, that is, slightly wide. Accordingly, by minimizing the distance between the ruts of the left and right crawler traveling devices 2 and 2 as described above, a state suitable for traveling on a narrow passage or the like is obtained, and the width of the passage that the crawler traveling devices 2 and 2 can pass is not limited. The swivel base 4 is always able to pass, so that the whole vehicle body can pass without contacting a wall, a fence, or the like, so that such a determination as to whether or not passing is possible can be made easily.
【0024】図8は本発明の第2の実施の形態を示して
おり、轍間距離(トレッド)を最少(=Dmin )に設定
した状態では、前方向きの旋回台4の全幅と左右クロー
ラ走行装置2、2の全幅とが等しく、すなわち、旋回中
心Zから左右クローラ走行装置2、2の左右方向外側端
までの距離(=dmin )が、旋回中心Zから旋回台4の
左右方向外側端部までの距離(=d' )に一致してい
る。また、図9に示すように、轍間距離を最大(=D
max )に設定した状態では、旋回台4後端の最大旋回直
径(=最大旋回半径Rmax ×2)と左右クローラ走行装
置2、2の全幅とが等しく、すなわち、旋回中心Zから
左右クローラ走行装置2、2の左右方向外側端までの距
離(=dmax )が、最大旋回半径(=Rmax )に一致す
るように夫々寸法設定されている。FIG. 8 shows a second embodiment of the present invention. When the distance between the tracks (tread) is set to the minimum (= D min ), the full width of the front turntable 4 and the left and right crawlers are set. The total width of the traveling devices 2 and 2 is equal, that is, the distance (= d min ) from the turning center Z to the left and right outer ends of the left and right crawler traveling devices 2 and 2 is equal to the outside of the turning table 4 in the left and right direction from the turning center Z. This is equal to the distance to the end (= d '). Further, as shown in FIG. 9, the distance between the ruts is maximized (= D
max ), the maximum turning diameter (= maximum turning radius Rmax × 2) at the rear end of the turntable 4 is equal to the entire width of the left and right crawler traveling devices 2 and 2, that is, the left and right crawler traveling from the turning center Z. The distances (= d max ) to the left and right outer ends of the devices 2 and 2 are sized so as to match the maximum turning radius (= R max ).
【0025】従って、上記第1の実施の形態と同様に、
例えば、非常に狭い路地を通って比較的広い掘削作業現
場へ向かうようなときに、上記構造が便利である。すな
わち、轍間距離を小(=Dmin )に設定して路地を通
り、現場では轍間距離を大(=Dmax )に設定して掘削
性の向上を図る、及び他物との接当のおそれなく旋回作
業できる、といった具合である。本発明は、上記実施形
態に限ることなく、例えば、轍間距離を最小とした際の
旋回中心から左右クローラ走行装置の左右方向外側端部
までの距離と、旋回中心から旋回台の左右方向外側端部
までの距離とを一致させ、轍間距離を最大とした際の旋
回中心から左右クローラ走行装置の左右方向外側端部ま
での距離を、最大旋回半径に対して広幅とすることがで
きる。Therefore, similarly to the first embodiment,
The above structure is convenient, for example, when traveling to a relatively large excavation site through a very narrow alley. That is, the distance between ruts is set to a small value (= D min ) to pass through an alley, and at the site, the distance between the ruts is set to a large value (= D max ) to improve excavation and contact with other objects. The turning work can be performed without fear. The present invention is not limited to the above embodiment, for example, the distance from the turning center to the left and right outer ends of the left and right crawler traveling device when the distance between the tracks is minimized, and the left and right outer sides of the turning table from the turning center. By matching the distance to the end, the distance from the center of turning when the rut distance is maximized to the laterally outer end of the left and right crawler traveling device can be made wider than the maximum turning radius.
【0026】前記バックホウの上部構造及び上部構造と
轍間距離を最大とした際の左右クローラ走行装置2、2
との関係性を、図1、2及び図8、9に基づいてさらに
詳細に説明する。バックホウは、左右クローラ走行装置
2を有する走行機台3に旋回台4を旋回自在に設け、こ
の旋回台4の後部上に旋回台4からはみ出さない状態の
エンジンボンネット6を上方突出配置し、旋回台4の前
部の前面33にスイング支点Pを介して掘削作業装置1
のブーム7を左右揺動自在に設けている。The upper structure of the backhoe and the right and left crawler traveling devices 2, 2 when the distance between the upper structure and the rut is maximized.
Will be described in more detail with reference to FIGS. 1 and 2 and FIGS. The backhoe is provided with a swivel 4 on a traveling machine base 3 having a left and right crawler traveling device 2 so as to be able to swivel, and an engine bonnet 6 which does not protrude from the swivel 4 is disposed on a rear portion of the swivel 4 so as to protrude upward. The excavating work device 1 is provided on the front surface 33 at the front of the swivel table 4 via the swing fulcrum P.
Boom 7 is provided to be able to swing left and right.
【0027】旋回台4には、前向き姿勢時(図1、8の
状態)に運転シート5の左右で前後方向に沿う左右側縁
部30L、30Rが形成され、この側縁部30L、30
Rは、左右クローラ走行装置2を最小轍間距離(Dmi
n)状態(図1、8に実線で示す状態)とした際の外側
端部から左右外方に非突出状態とされている。旋回台4
の後端31は旋回中心Zを略曲率中心とする円弧状に形
成され、その半径は旋回中心Zからクローラ走行装置2
の最外側端32L、32Rまでの距離dmax以下(小
さい又は略同一)に設定されている。The turning table 4 is formed with left and right side edges 30L and 30R along the front-rear direction on the left and right sides of the driving seat 5 in the forward posture (the state shown in FIGS. 1 and 8).
R sets the left and right crawler traveling device 2 to the minimum rut distance (Dmi
n) It is a non-projecting state to the left and right outward from the outer end in the state (the state shown by the solid line in FIGS. 1 and 8). Swivel 4
The rear end 31 of the crawler traveling device 2 is formed in an arc shape having the turning center Z as a substantially center of curvature and having a radius from the turning center Z.
The distance dmax to the outermost ends 32L and 32R is smaller than (small or substantially the same as).
【0028】従って、旋回台4の円弧状後端31は、旋
回台4を図2、9に示す90度旋回した横向き姿勢にし
た時、クローラ走行装置2の最外側端32L、32Rよ
り内側又は同一位置に位置され、左右外方に突出するこ
とはない。また、旋回台4のスイング支点Pも、クロー
ラ走行装置2の最外側端32L、32Rから左右外方に
突出することはなく、スイング支点Pから円弧状後端3
1までの範囲は、90度旋回した横向き姿勢時に左右ク
ローラ走行装置2の最外側端32L、32R間の範囲内
に略収められる。Therefore, when the swivel base 4 is turned 90 degrees as shown in FIGS. 2 and 9, the arc-shaped rear end 31 of the swivel base 4 is located inside or outside the outermost ends 32L and 32R of the crawler traveling device 2. It is located at the same position and does not protrude left and right. Also, the swing fulcrum P of the swivel 4 does not protrude left and right outward from the outermost ends 32L and 32R of the crawler traveling device 2, and the arcuate rear end 3 from the swing fulcrum P.
The range up to 1 is substantially contained within the range between the outermost ends 32L and 32R of the left and right crawler traveling device 2 when the vehicle is turned 90 degrees in the horizontal position.
【0029】旋回台4は左右側縁部30L、30Rと、
これらと略直交する方向の前面33と、円弧状後端31
とを有し、平面視において略多角形状に形成され、旋回
台4の前面33と左右側縁部30L、30Rとの間には
前左右コーナ部34L、34Rが形成され、この前左右
コーナ部34L、34Rは円弧状の面取り面となってい
る。旋回台4の前左右コーナ部34L、34Rは、旋回
中心Zを略曲率中心とする後端31と略同一半径(距離
dmaxより小さい又は略同一)の円弧状に形成され、
360度の旋回範囲内でクローラ走行装置2の最外側端
32L、32Rより内側又は同一位置に位置されてお
り、スイング支点Pとともに円弧状後端31を通る仮想
円35の範囲内に略収められている。The swivel 4 has left and right side edges 30L and 30R.
A front surface 33 in a direction substantially orthogonal to these, and an arc-shaped rear end 31
And front and left and right corners 34L and 34R are formed between the front surface 33 of the swivel 4 and the left and right side edges 30L and 30R. 34L and 34R are arc-shaped chamfered surfaces. The front left and right corner portions 34L and 34R of the swivel base 4 are formed in an arc shape having substantially the same radius (smaller or less than the distance dmax) as the rear end 31 having the center of curvature about the center of rotation Z,
It is positioned inside or at the same position as the outermost ends 32L and 32R of the crawler traveling device 2 within the 360-degree turning range, and is substantially contained within a virtual circle 35 passing through the arc-shaped rear end 31 together with the swing fulcrum P. ing.
【0030】前記前向き姿勢時の旋回台4の左右側縁部
30L、30Rと左右クローラ走行装置2の最外側端3
2L、32Rとの間の左右クローラ走行装置5上には、
外側方向は勿論のこと、前後方向及び上方向に開放され
た左右空間36を有することになり、この左右空間36
は旋回台4の前上面のステップ面37と通じている。前
記エンジンボンネット6の左右両側面及び後面は、旋回
台4の左右側縁部30L、30R及び後端31と略面一
に形成され、このエンジンボンネット6の左右側面は前
向き姿勢時の旋回台4の左右側縁部30L、30Rの上
側で、左右クローラ走行装置2の最外側端32L、32
Rとの間の左右クローラ走行装置5上に前後方向及び上
方向に開放された空間36の上方部分を形成することに
なる。The left and right side edges 30L, 30R of the swivel table 4 and the outermost end 3 of the left and right crawler traveling device 2 in the forward facing position.
On the left and right crawler traveling device 5 between 2L and 32R,
The left and right spaces 36 are opened in the front-rear direction and the upward direction as well as in the outward direction.
Communicates with a step surface 37 on the front upper surface of the swivel 4. The left and right side surfaces and the rear surface of the engine bonnet 6 are formed substantially flush with the left and right side edge portions 30L, 30R and the rear end 31 of the swivel base 4, and the left and right side surfaces of the engine hood 6 are in the forward posture. The outermost ends 32L, 32 of the left and right crawler traveling device 2 are located above the left and right side edge portions 30L, 30R.
An upper portion of the space 36 opened in the front-rear direction and the upward direction is formed on the left and right crawler traveling device 5 between the right and left.
【0031】エンジンボンネット6は旋回台4の略後半
分を覆い、その上には運転シート5が搭載され、この運
転シート5の前後方向中途部に旋回台4の左右側縁部3
0L、30R及びエンジンボンネット6の左右側面と円
弧状後端31との交点38が対応されている。前記ステ
ップ面37は、ブーム7の後側でエンジンボンネット6
及び運転シート5より前側の旋回台4前上面のに形成さ
れ、左右方向に延び、左右側縁部30L、30Rに至
り、空間36に通じている。The engine bonnet 6 covers substantially the rear half of the swivel base 4 and has an operation seat 5 mounted thereon.
0L, 30R, and intersections 38 between the left and right side surfaces of the engine bonnet 6 and the arc-shaped rear end 31 correspond to each other. The step surface 37 is located on the rear side of the boom
Further, it is formed on the front upper surface of the swivel 4 on the front side of the operation seat 5, extends in the left-right direction, reaches the left and right side edges 30 </ b> L, 30 </ b> R, and communicates with the space 36.
【0032】[0032]
【発明の効果】以上詳述した本発明によれば、運転者は
エンジンカバー6上の運転シート5に着座して、ブーム
7を旋回台4に対して左右揺動したり、旋回台4を左右
側縁部30L、30Rで姿勢を視認しながら旋回でき、
前向き姿勢から旋回しても、旋回台4の左右側縁部30
L、30R、後端31、スイング支点Pあるいは前左右
コーナ部34L、34R等は、最大轍間距離にしたとき
の左右クローラ走行装置2の最外側端32L、32Rか
ら突出することがなく、左右クローラ走行装置2を構造
物等へより近づけて作業ができる。According to the present invention described in detail above, the driver sits on the driving seat 5 on the engine cover 6 and swings the boom 7 left and right with respect to the swivel base 4 or moves the swivel base 4 up and down. You can turn while visually checking the posture at the left and right edges 30L, 30R,
Even when turning from the forward posture, the left and right side edges 30 of the turntable 4
L, 30R, rear end 31, swing fulcrum P, front left and right corners 34L, 34R, etc. do not protrude from the outermost ends 32L, 32R of the left and right crawler traveling device 2 at the maximum rut distance, Work can be performed with the crawler traveling device 2 closer to a structure or the like.
【図1】本発明の第1の実施の形態を示す旋回台前向き
姿勢時の平面図である。FIG. 1 is a plan view showing a first embodiment of the present invention when a swivel base is facing forward.
【図2】本発明の第1の実施の形態を示す旋回台横向き
姿勢時の平面図である。FIG. 2 is a plan view showing the first embodiment of the present invention when the swivel platform is in a horizontal position.
【図3】同バックホウ全体の側面図である。FIG. 3 is a side view of the entire backhoe.
【図4】バケット先端の移動軌跡を示す掘削作業装置の
作動図である。FIG. 4 is an operation diagram of the excavation work device showing a movement locus of a bucket tip.
【図5】ブーム挟角自動調節手段の説明図である。FIG. 5 is an explanatory view of a boom included angle automatic adjusting means.
【図6】走行機台を示す断面平面図であり、(a)は最
小轍間距離の状態、(b)は最大轍間距離の状態を示
す。FIGS. 6A and 6B are cross-sectional plan views showing the traveling machine base, wherein FIG. 6A shows a state with a minimum distance between ruts, and FIG. 6B shows a state with a maximum distance between ruts.
【図7】図6(a)のA−A矢示図である。FIG. 7 is a diagram showing an arrow AA in FIG. 6 (a).
【図8】本発明の第2の実施の形態を示す旋回台前向き
姿勢時の平面図である。FIG. 8 is a plan view showing a second embodiment of the present invention when the swivel base is in a forward facing posture.
【図9】本発明の第2の実施の形態を示す旋回台横向き
姿勢時の平面図である。FIG. 9 is a plan view showing a second embodiment of the present invention when the swivel base is in a horizontal position.
1 掘削作業装置 2 クローラ走行装置 3 走行機台 4 旋回台 5 運転シート 6 エンジンボンネット 7 ブーム 30 旋回台側縁部 31 旋回台後端 32 クローラ走行装置最外側端 33 前面 34 コーナ部 Z 旋回中心 P スイング支点 DESCRIPTION OF SYMBOLS 1 Excavation work device 2 Crawler traveling device 3 Traveling machine stand 4 Revolving platform 5 Operation seat 6 Engine bonnet 7 Boom 30 Revolving platform side edge 31 Revolving platform rear end 32 Crawler traveling device outermost end 33 Front surface 34 Corner Z Rotation center P Swing fulcrum
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7,DB名) E02F 9/00 - 9/08 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 7 , DB name) E02F 9/00-9/08
Claims (7)
ローラ走行装置(2)を有する走行機台(3)に旋回台
(4)を旋回自在に設け、この旋回台(4)の後部上に
旋回台(4)からはみ出さない状態のエンジンカバー
(6)を上方突出配置しかつこのエンジンカバー(6)
上に運転シート(5)を設け、前記旋回台(4)の前部
でかつ運転シート(5)の前方に左右揺動自在なブーム
(7)を有する掘削作業装置(1)を設け、前記ブーム
(7)の後側でかつ運転シート(5)の前側の旋回台
(4)前上面に左右側方に延びるステップ面(37)を
形成し、旋回台(4)に前向き姿勢時に運転シート
(5)の左右側方で前後方向に沿う左右側縁部(30
L、30R)を形成しかつこの左右側縁部(30L、3
0R)を最小轍間距離にした左右クローラ走行装置
(2)の外側端部から左右外方に非突出状態とし、旋回
台(4)の後端(31)を円弧状に形成しかつ前向き姿
勢時にクローラ走行装置(2)の後端から後外方に非突
出状態に設定していることを特徴とするバックホウ。1. A swivel (4) is rotatably provided on a traveling machine base (3) having a left and right crawler traveling device (2) with a variable left-right rut distance, and a rear portion of the swivel (4). An engine cover (6), which does not protrude from the swivel (4), is arranged to protrude upward, and the engine cover (6)
An operation seat (5) is provided thereon, and an excavation work device (1) having a boom (7) capable of swinging right and left is provided in front of the turntable (4) and in front of the operation seat (5). A step surface (37) extending to the left and right sides is formed on the upper front surface of the swivel (4) at the rear side of the boom (7) and in front of the operation seat (5), and the operation seat is positioned on the swivel (4) in a forward posture. (5) Left and right side edges (30
L, 30R) and the left and right side edges (30L, 30R).
0R) is a non-projecting state to the left and right from the outer end of the left and right crawler traveling device (2) with the minimum distance between the ruts, and the rear end (31) of the swivel (4) is formed in an arc shape and has a forward facing posture. A backhoe characterized in that the crawler traveling device (2) is sometimes set so as not to protrude rearward and outward from a rear end of the crawler traveling device (2).
ローラ走行装置(2)を有する走行機台(3)に旋回台
(4)を旋回自在に設け、この旋回台(4)の後部上に
旋回台(4)からはみ出さない状態のエンジンカバー
(6)を上方突出配置しかつこのエンジンカバー(6)
上に運転シート(5)を設け、前記旋回台(4)を平面
視において前向き姿勢時に運転シート(5)の左右側方
で前後方向に沿う左右側縁部(30L、30R)を有す
る略多角形状に形成し、旋回台(4)の前部でかつ運転
シート(5)の前方に左右揺動自在なブーム(7)を有
する掘削作業装置(1)を設け、前記ブーム(7)の後
側でかつ運転シート(5)の前側の旋回台(4)前上面
に左右側縁部(30L、30R)に至るステップ面(3
7)を形成し、旋回台(4)の後端(31)を円弧状に
形成しかつ90度旋回した横向き姿勢時に最大轍間距離
にしたときのクローラ走行装置(2)の最外側端(32
L、32R)より内側に位置させていることを特徴とす
るバックホウ。2. A turning platform (4) is provided on a traveling machine base (3) having a left and right crawler traveling device (2) capable of changing a rut distance in a lateral direction, and a rear portion of the turning platform (4). An engine cover (6), which does not protrude from the swivel (4), is arranged to protrude upward, and the engine cover (6)
A driving seat (5) is provided on the upper side, and a substantially polygonal shape having left and right side edges (30L, 30R) along the front-rear direction on the left and right sides of the driving seat (5) when the swivel table (4) is in a forward facing posture in plan view. An excavation work device (1) having a boom (7) that can swing left and right is provided in front of the swivel (4) and in front of the operation seat (5), and is provided after the boom (7). Step surface (3) reaching the left and right side edges (30L, 30R) on the front upper surface of the turntable (4) on the front side of the driving seat (5).
7), the rear end (31) of the turntable (4) is formed in an arc shape, and the outermost end (2) of the crawler traveling device (2) when the maximum distance between the ruts is attained when the vehicle is turned 90 degrees in the horizontal position. 32
(L, 32R).
ローラ走行装置(2)を有する走行機台(3)に旋回台
(4)を旋回自在に設け、この旋回台(4)の後部上に
旋回台(4)からはみ出さない状態のエンジンカバー
(6)を上方突出配置しかつこのエンジンカバー(6)
上に運転シート(5)を設け、前記旋回台(4)を平面
視において前向き姿勢時に運転シート(5)の左右側方
で前後方向に沿う左右側縁部(30L、30R)を有す
る略多角形状に形成し、旋回台(4)の前部でかつ運転
シート(5)の前方にスイング支点(P)を介して掘削
作業装置(1)のブーム(7)を左右揺動自在に設け、
前記ブーム(7)の後側でかつ運転シート(5)の前側
の旋回台(4)前上面に左右側縁部(30L、30R)
に至るステップ面(37)を形成し、旋回台(4)の後
端(31)を円弧状に形成しかつ旋回台(4)のスイン
グ支点(P)から円弧状後端(31)までの範囲を90
度旋回した横向き姿勢時に最大轍間距離にしたときの左
右クローラ走行装置(2)の最外側端(32L、32
R)間の範囲内に略収めていることを特徴とするバック
ホウ。3. A turning platform (4) is provided on a traveling machine base (3) having a left and right crawler traveling device (2) with a variable left and right rut distance, and a rear portion of the turning platform (4). An engine cover (6), which does not protrude from the swivel (4), is arranged to protrude upward, and the engine cover (6)
A driving seat (5) is provided on the upper side, and a substantially polygonal shape having left and right side edges (30L, 30R) along the front-rear direction on the left and right sides of the driving seat (5) when the swivel table (4) is in a forward facing posture in plan view. A boom (7) of the excavating work device (1) is formed to be swingable right and left through a swing fulcrum (P) in front of the swivel (4) and in front of the operation seat (5),
Left and right side edges (30L, 30R) on the upper surface in front of the swivel (4) behind the boom (7) and in front of the driving seat (5).
Is formed, and the rear end (31) of the swivel base (4) is formed in an arc shape, and from the swing fulcrum (P) of the swivel base (4) to the arc-shaped rear end (31). Range 90
Outermost ends (32L, 32L) of the left and right crawler traveling device (2) when the maximum distance between the ruts is set at the time of turning in the horizontal posture.
R) The backhoe is substantially contained within the range between R).
ローラ走行装置(2)を有する走行機台(3)に旋回台
(4)を旋回自在に設け、この旋回台(4)の後部上に
旋回台(4)からはみ出さない状態のエンジンカバー
(6)を上方突出配置しかつこのエンジンカバー(6)
上に運転シート(5)を設け、前記旋回台(4)に前向
き姿勢時に運転シート(5)の左右側方で前後方向に沿
う左右側縁部(30L、30R)を形成しかつこの左右
側縁部(30L、30R)を前向き姿勢時に最小轍間距
離にした左右クローラ走行装置(2)の外側端部から左
右外方に非突出状態とし、旋回台(4)の前部に左右側
縁部(30L、30R)と略直交する方向の前面(3
3)を形成すると共にその前面(33)でかつ運転シー
ト(5)の前方に左右揺動自在なブーム(7)を有する
掘削作業装置(1)を設け、前記ブーム(7)の後側で
かつ運転シート(5)の前側の旋回台(4)前上面に左
右側縁部(30L、30R)に至るステップ面(37)
を形成し、旋回台(4)の後端(31)を円弧状に形成
し、左右側縁部(30L、30R)と前面(33)との
間の前左右コーナ部(34L、34R)に面取り面を形
成し、旋回中心(Z)から旋回台(4)の後端(31)
及び前左右コーナ部(34L、34R)までの距離を旋
回中心(Z)から最大轍間距離にしたときのクローラ走
行装置(2)の最外側端(32L、32R)までの距離
(dmax)以下に設定していることを特徴とするバッ
クホウ。4. A swivel (4) is provided on a traveling machine (3) having a left and right crawler traveling device (2) capable of changing a rut distance in a left and right direction, and a rear portion of the swivel (4). An engine cover (6), which does not protrude from the swivel (4), is arranged to protrude upward, and the engine cover (6)
An operation seat (5) is provided on the upper side, and left and right side edges (30L, 30R) are formed on the swivel (4) in the forward and rearward directions when the operation seat (5) is in a forward posture. The edges (30L, 30R) are not protruded left and right outward from the outer ends of the left and right crawler traveling device (2) with the minimum distance between the ruts in the forward posture, and the left and right side edges are formed at the front of the swivel (4). (30L, 30R) and the front surface (3
An excavation work device (1) having a boom (7) that can swing left and right is provided on the front surface (33) and in front of the operation seat (5) at the front of the operation seat (5), and at the rear side of the boom (7). And a step surface (37) reaching the left and right side edge portions (30L, 30R) on the front upper surface of the turntable (4) on the front side of the operation seat (5).
And the rear end (31) of the swivel (4) is formed in an arc shape, and is formed at the front left and right corner portions (34L, 34R) between the left and right side edges (30L, 30R) and the front surface (33). A chamfered surface is formed and the rear end (31) of the swivel table (4) from the turning center (Z).
And the distance (dmax) below the outermost end (32L, 32R) of the crawler traveling device (2) when the distance to the front left and right corners (34L, 34R) is set to the maximum distance between the turning center (Z) and the rut. A backhoe characterized by being set to.
ローラ走行装置(2)を有する走行機台(3)に旋回台
(4)を旋回自在に設け、この旋回台(4)の後部上に
旋回台(4)からはみ出さない状態のエンジンカバー
(6)を上方突出配置しかつこのエンジンカバー(6)
上に運転シート(5)を設け、前記旋回台(4)を平面
視において前向き姿勢時に運転シート(5)の左右側方
で前後方向に沿う左右側縁部(30L、30R)を有す
る略多角形状に形成し、旋回台(4)の前部でかつ運転
シート(5)の前方に左右揺動自在なブーム(7)を有
する掘削作業装置(1)を設け、前記ブーム(7)の後
側でかつ運転シート(5)の前側の旋回台(4)前上面
に左右側縁部(30L、30R)に至るステップ面(3
7)を形成し、旋回台(4)の前部と左右側縁部(30
L、30R)との間に前左右コーナ部(34L、34
R)を形成し、旋回台(4)の後端(31)及び前左右
コーナ部(34L、34R)を円弧状に形成しかつ36
0度の旋回範囲内で最大轍間距離にしたときのクローラ
走行装置(2)の最外側端(32L、32R)より内側
に位置させていることを特徴とするバックホウ。5. A turntable (4) is provided on a traveling machine stand (3) having a left and right crawler traveling device (2) capable of changing a left-to-right rut distance, and a rear portion of the turntable (4). An engine cover (6), which does not protrude from the swivel (4), is arranged to protrude upward, and the engine cover (6)
A driving seat (5) is provided on the upper side, and a substantially polygonal shape having left and right side edges (30L, 30R) along the front-rear direction on the left and right sides of the driving seat (5) when the swivel table (4) is in a forward facing posture in plan view. An excavation work device (1) having a boom (7) that can swing left and right is provided in front of the swivel (4) and in front of the operation seat (5), and is provided after the boom (7). Step surface (3) reaching the left and right side edges (30L, 30R) on the front upper surface of the turntable (4) on the front side of the driving seat (5).
7), and the front and left and right side edges (30) of the swivel (4) are formed.
L, 30R) between the front left and right corners (34L, 34R).
R), the rear end (31) of the swivel (4) and the front left and right corners (34L, 34R) are formed in an arc shape, and 36
A backhoe which is located inside the outermost ends (32L, 32R) of the crawler traveling device (2) when the maximum rut distance is set within a turning range of 0 degrees.
ローラ走行装置(2)を有する走行機台(3)に旋回台
(4)を旋回自在に設け、この旋回台(4)の後部上に
旋回台(4)からはみ出さない状態のエンジンカバー
(6)を上方突出配置しかつこのエンジンカバー(6)
上に運転シート(5)を設け、前記旋回台(4)を平面
視において前向き姿勢時に運転シート(5)の左右側方
で前後方向に沿う左右側縁部(30L、30R)を有す
る略多角形状に形成し、旋回台(4)の前部でかつ運転
シート(5)の前方にスイング支点(P)を介して掘削
作業装置(1)のブーム(7)を左右揺動自在に設け、
前記ブーム(7)の後側でかつ運転シート(5)の前側
の旋回台(4)前上面に左右側縁部(30L、30R)
に至るステップ面(37)を形成し、旋回台(4)の前
部と左右側縁部(30L、30R)との間に前左右コー
ナ部(34L、34R)を形成し、旋回台(4)の後端
(31)を旋回中心(Z)から最大轍間距離にしたとき
のクローラ走行装置(2)の最外側端(32L、32
R)までの距離(dmax)より小さい半径の円弧状に
形成し、前左右コーナ部(34L、34R)及びスイン
グ支点(P)を円弧状後端(31)を通る仮想円(3
5)の範囲内に略収めていることを特徴とするバックホ
ウ。6. A turning platform (4) is provided on a traveling machine base (3) having a left and right crawler traveling device (2) having a variable left-right rut distance, and a rear portion of the turning platform (4). An engine cover (6), which does not protrude from the swivel (4), is arranged to protrude upward, and the engine cover (6)
A driving seat (5) is provided on the upper side, and a substantially polygonal shape having left and right side edges (30L, 30R) along the front-rear direction on the left and right sides of the driving seat (5) when the swivel table (4) is in a forward facing posture in plan view. A boom (7) of the excavating work device (1) is formed to be swingable right and left through a swing fulcrum (P) in front of the swivel (4) and in front of the operation seat (5),
Left and right side edges (30L, 30R) on the upper surface in front of the swivel (4) behind the boom (7) and in front of the driving seat (5).
Are formed, and front and left and right corners (34L, 34R) are formed between the front portion of the swivel table (4) and the left and right side edges (30L, 30R). ), The outermost ends (32L, 32) of the crawler traveling device (2) when the rear end (31) is at the maximum distance between the ruts from the turning center (Z).
R), a virtual circle (3) passing through the front and right corners (34L, 34R) and the swing fulcrum (P) through the arc-shaped rear end (31).
Backhoe characterized in that it is substantially contained within the range of 5).
部(30L、30R)と最大轍間距離にしたときの左右
クローラ走行装置(2)の最外側端(32L、32R)
との間の左右クローラ走行装置(5)上に前後方向及び
上方向に開放された空間(36)を有していることを特
徴とする請求項1〜6のいずれかに記載のバックホウ。7. The outermost ends (32L, 32R) of the left and right crawler traveling device (2) when the distance between the left and right side edges (30L, 30R) of the turntable (4) in the forward posture and the maximum rut is set.
The backhoe according to any one of claims 1 to 6, further comprising a space (36) that is open in the front-rear direction and the upward direction on the left and right crawler traveling device (5).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001157780A JP3312026B2 (en) | 1994-08-04 | 2001-05-25 | Backhoe |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6-183151 | 1994-08-04 | ||
JP18315194 | 1994-08-04 | ||
JP2001157780A JP3312026B2 (en) | 1994-08-04 | 2001-05-25 | Backhoe |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP27266996A Division JP3220391B2 (en) | 1994-08-04 | 1996-10-15 | Backhoe |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2002021117A JP2002021117A (en) | 2002-01-23 |
JP3312026B2 true JP3312026B2 (en) | 2002-08-05 |
Family
ID=26501702
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2001157780A Expired - Fee Related JP3312026B2 (en) | 1994-08-04 | 2001-05-25 | Backhoe |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3312026B2 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4613341B2 (en) * | 2004-03-22 | 2011-01-19 | ヤンマー建機株式会社 | Backhoe |
JP4742195B2 (en) * | 2004-03-22 | 2011-08-10 | ヤンマー建機株式会社 | Backhoe |
EP1888850A1 (en) * | 2005-06-10 | 2008-02-20 | The Charles Machine Works Inc | Turret mounted compact tool carrier |
CN103132549A (en) * | 2013-01-26 | 2013-06-05 | 王开怀 | Arc spading type loader |
KR20210006193A (en) * | 2019-07-08 | 2021-01-18 | 두산인프라코어 주식회사 | Construction machinery |
-
2001
- 2001-05-25 JP JP2001157780A patent/JP3312026B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2002021117A (en) | 2002-01-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO1997028316A1 (en) | Swing type hydraulic excavator | |
JP3312026B2 (en) | Backhoe | |
JP3220391B2 (en) | Backhoe | |
JP3220393B2 (en) | Backhoe | |
JP2810260B2 (en) | Turning work vehicle | |
JP3220392B2 (en) | Backhoe | |
JPS63272820A (en) | Excavating and transporting vehicle | |
JP2922823B2 (en) | Backhoe | |
JP2631942B2 (en) | Ultra small turning power shovel | |
JP3538053B2 (en) | Swivel truck frame | |
JP3540541B2 (en) | Swing hydraulic excavator | |
JP2930930B2 (en) | Turning work vehicle | |
JP3220390B2 (en) | Backhoe | |
JP3170427B2 (en) | Backhoe | |
JP2812439B2 (en) | Turning work vehicle | |
JP2895483B2 (en) | Turning work vehicle | |
JP2845415B2 (en) | Swiveling excavator | |
JPH0513804Y2 (en) | ||
JP2877716B2 (en) | Backhoe arm angle detector | |
JP3535433B2 (en) | Work machine | |
JPH10140594A (en) | Back hoe | |
JP3589595B2 (en) | Turning work machine | |
JP3213201B2 (en) | Backhoe | |
JPS5810763Y2 (en) | excavation work vehicle | |
JP2812438B2 (en) | Turning work vehicle |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090524 Year of fee payment: 7 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090524 Year of fee payment: 7 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100524 Year of fee payment: 8 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110524 Year of fee payment: 9 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120524 Year of fee payment: 10 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120524 Year of fee payment: 10 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130524 Year of fee payment: 11 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130524 Year of fee payment: 11 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140524 Year of fee payment: 12 |
|
LAPS | Cancellation because of no payment of annual fees |