JP3220390B2 - Backhoe - Google Patents

Backhoe

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Publication number
JP3220390B2
JP3220390B2 JP27028996A JP27028996A JP3220390B2 JP 3220390 B2 JP3220390 B2 JP 3220390B2 JP 27028996 A JP27028996 A JP 27028996A JP 27028996 A JP27028996 A JP 27028996A JP 3220390 B2 JP3220390 B2 JP 3220390B2
Authority
JP
Japan
Prior art keywords
swivel
crawler traveling
traveling device
cover
cockpit
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 - Lifetime
Application number
JP27028996A
Other languages
Japanese (ja)
Other versions
JPH09165780A (en
Inventor
壽之 松本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kubota Corp
Original Assignee
Kubota Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kubota Corp filed Critical Kubota Corp
Priority to JP27028996A priority Critical patent/JP3220390B2/en
Publication of JPH09165780A publication Critical patent/JPH09165780A/en
Application granted granted Critical
Publication of JP3220390B2 publication Critical patent/JP3220390B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、旋回台の後部の旋
回半径を小さくした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 in which a turning radius at a rear portion of a turning table is reduced.

【0002】[0002]

【従来の技術】従来技術のバックホウにおいては、図6
に示すように、左右クローラ走行装置5’を有する走行
機台に旋回台1’を旋回自在に支持し、この旋回台1’
の前部における左右中間部に掘削作業装置A’を連結
し、その掘削作業装置A’の後方に操縦席2’を配設
し、前記旋回台1’の後部にエンジン3’を搭載してあ
り、エンジン3’を、その出力軸芯P’が旋回台1’の
左右方向に沿う状態で搭載してあるのが一般的である。
2. Description of the Related Art In a conventional backhoe, FIG.
As shown in the figure, a turntable 1 'is pivotably supported on a traveling machine base having a left and right crawler traveling device 5'.
An excavation work device A 'is connected to the left and right intermediate portion at the front of the excavation work device A', a cockpit 2 'is arranged behind the excavation work device A', and an engine 3 'is mounted at the rear of the swivel 1'. In general, the engine 3 'is generally mounted with its output shaft center P' along the left-right direction of the swivel 1 '.

【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1’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
1’は前向き姿勢時において図6のように、後部が左右
クローラ走行装置5’の後部よりも大きく突出してお
り、この旋回台1’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5’の左右外側端より
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 of the rear portion of the turning table 1 '. In a general swivel base structure, as shown in FIG. 6, the rear end of the swivel base 1 'projects more than the rear part of the left and right crawler traveling device 5' in the forward posture, and the swivel base 1 'is turned by 90 degrees. When it is in the horizontal posture, the rear portion projects more than the left and right outer ends of the left and right crawler traveling device 5 '.

【0004】すなわち、旋回台1’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5’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5’と略同一幅の狭い所では、侵入
しても構造物等が障害になって旋回台1’が旋回し得
ず、掘削作業をすることが困難になっている。また、操
縦席2’はエンジン3’を覆うカバーより前側に配置さ
れており、操縦席2’とエンジンカバーとを前後配置す
ることにより、旋回台1’の前後方向長さを長くする原
因になっており、しかも、エンジンカバーの側縁は旋回
台1’が前向き姿勢の時に前後方向に沿うが、操縦者か
らは後側方に位置するため、旋回姿勢視認の機能を持た
せることが困難になっている。
That is, the revolving base 1 'is long in the front-rear direction, and the turning radius is shaped to protrude more than the front and rear ends and the left and right outer ends of the left and right crawler traveling devices 5'. In a narrow place having substantially the same width as that of the above, even if it enters, the structure or the like becomes an obstacle and the turntable 1 'cannot turn, making it difficult to perform excavation work. In addition, the cockpit 2 'is disposed on the front side of the cover that covers the engine 3'. By arranging the cockpit 2 'and the engine cover back and forth, the length of the turntable 1' in the front-rear direction may be increased. In addition, the side edge of the engine cover extends in the front-rear direction when the swivel base 1 'is in the forward position, but it is difficult for the pilot to provide the function of recognizing the turning position because it is located on the rear side. It has become.

【0005】本発明の目的は、旋回台を90度旋回した
横向き姿勢時でも、旋回台の後縁部がクローラ走行装置
から突出することがなく、クローラ走行装置を構造物等
へより近接でき、狭所作業性を向上でき、旋回台だけで
なくエンジンカバーの側縁でも旋回姿勢視認の機能を持
たせることができ、そのように構成して狭所作業をして
いても、前向き姿勢時の旋回台の左右側縁部及びエンジ
ンカバーの側面の外側方を人が通るときに、人の上体が
容易に通行可能にできるようにしたバックホウを提供す
ることである。
[0005] It is an object of the present invention to provide a crawler traveling device that can be brought closer to a structure or the like without the trailing edge of the swiveling platform protruding from the crawler traveling device even when the swiveling platform is turned 90 degrees in a horizontal position. The workability in narrow places can be improved, and the function of visually recognizing the turning posture can be provided not only on the swivel table but also on the side edge of the engine cover. An object of the present invention is to provide a backhoe that allows a human upper body to easily pass when a person passes outside the left and right side edges of the swivel base and the side surface of the engine cover.

【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、左右クローラ走行装置5
を有する走行機台4に旋回台1を旋回自在に設け、この
旋回台1上にエンジン3及びタンクを搭載して平面視に
おいて旋回台1からはみ出さない状態のカバー28で包
囲し、前記旋回台1の前部でかつ操縦席2の前方に左右
揺動自在なブーム6を有する掘削作業装置Aを設け、旋
回台1に前向き姿勢時に操縦席2の左右側方で前後方向
に沿う左右側縁部20L、20Rを形成しかつこの側縁
部20L、20Rを左右クローラ走行装置5の外側端2
1から左右外方に非突出状態とし、旋回台1の後縁部2
2を円弧形状に形成し、旋回台1を90度旋回した横向
き姿勢時に、前記後縁部22を左右クローラ走行装置5
の外側端21から非突出状態にし、カバー28の側面
旋回台1の側縁部20と略面一にして旋回台1前向き姿
勢時に前後方向に沿わせ、前向き姿勢時の旋回台1の左
右側縁部20L、20R及びカバー28の側面と左右ク
ローラ走行装置5の外側端21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26
を有していることである。
A first concrete means for solving the problem in the present invention is a left and right crawler traveling device 5.
The swivel 1 is provided to be rotatable on the traveling machine base 4 having the engine, and the engine 3 and the tank are mounted on the swivel 1 in plan view.
And is surrounded by a cover 28 which does not protrude from the swivel table 1 , and is located in front of the swivel table 1 and in front of the cockpit 2.
An excavating work apparatus A having a swingable boom 6 is provided, and left and right side edges 20L and 20R are formed on the swivel table 1 in the front and rear directions on the left and right sides of the cockpit 2 in a forward posture, and the side edges 20L. , 20R to the outer end 2 of the left and right crawler traveling device 5.
1 and the rear edge 2 of the swivel 1
2 is formed in an arc shape, and when the swivel table 1 is turned 90 degrees in the horizontal position, the trailing edge 22 is moved to the left and right crawler traveling device 5.
To the non-projecting state from the outer end 21 of the
The swivel 1 facing forward, substantially flush with the side edge 20 of the swivel 1
Along a front-rear direction during energized, the left and right side edges 20L of the swivel base 1 during forward-facing position, the right and left crawlers 5 back and forth on between the outer edge 21 of the right and left crawlers 5 and the side surface of the 20R and the cover 28 Open space 26 in the upward and downward directions
It is to have.

【0007】これによって、旋回台1を横向き姿勢にし
ても、旋回台1の後縁部22及びカバー28は左右クロ
ーラ走行装置5の外側端21から突出することがなく、
左右クローラ走行装置5を構造物等へより近づけて作業
ができ、旋回台1の側縁部20L、20Rだけでなくカ
バー28の側面も操縦席2の側方に位置して旋回姿勢の
視認機能を有し、構造物等へより近づけた状態でも、旋
回台1を前向き姿勢にしたとき、空間26を利用して旋
回台1の後縁部22及びカバー28の外側方を人が容易
に通行可能になる。
Thus, even when the swivel base 1 is in the horizontal position, the rear edge 22 and the cover 28 of the swivel base 1 do not protrude from the outer end 21 of the left and right crawler traveling device 5.
The left and right crawler traveling device 5 can be moved closer to a structure or the like to perform work, and not only the side edges 20L and 20R of the swivel base 1 but also the side surface of the cover 28 is located beside the cockpit 2 to visually recognize the turning posture. When the swivel 1 is in a forward position even in a state of being closer to a structure or the like, a person can easily pass the rear edge 22 of the swivel 1 and the outside of the cover 28 using the space 26. Will be possible.

【0008】本発明における課題解決のための第2の具
体的手段は、第1の具体的手段に加えて、前記ブーム6
の後側でかつカバー28及び操縦席2の前側の旋回台1
前上面に左右両空間26に通じるステップ面29を形成
していることである。これによって、操縦者はステップ
面29から空間26と通って、旋回台1の後方へ移動す
ることが可能になる。
[0008] A second concrete means for solving the problem in the present invention is the boom 6 in addition to the first concrete means.
Of the swivel 1 behind the cover 28 and the front of the cockpit 2
That is, a step surface 29 communicating with both the left and right spaces 26 is formed on the front upper surface . This allows the operator to move to the rear of the turntable 1 from the step surface 29 through the space 26.

【0009】[0009]

【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1、2に示すように、旋回台1
の前部における左右中間部に掘削作業装置Aを連結し、
その掘削作業装置Aの後方に操縦席2を配設するととも
に、旋回台1の後部にエンジン3を搭載してバックホウ
を構成してある。なお、4は走行機台、5はクローラ走
行装置である。前記掘削作業装置Aは、ブーム6、アー
ム7、バケット8を備えて構成してあり、さらに、ブー
ム6は格納状態において、図2に示すように、後傾姿勢
となって、バケット8を内方に抱え込むように構成して
ある。
Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS.
Excavation work equipment A is connected to the left and right intermediate part at the front of
A cockpit 2 is arranged behind the excavation work device A, and an engine 3 is mounted on a rear portion of the swivel 1 to form a backhoe. In addition, 4 is a traveling machine stand and 5 is a crawler traveling device. The excavation work device A is configured to include a boom 6, an arm 7, and a bucket 8, and furthermore, the boom 6 is in a retracted state in a retracted state as shown in FIG. It is configured to be held by people.

【0010】掘削作業装置Aのアーム7は、図4に示す
ように、断面U字形の主フレーム7Aとその開放側を閉
塞する補助フレーム7Bとを熔接してなり、その補助フ
レーム7Bの両端縁部分7aをその全長にわたってバケ
ット8側に折曲形成してあり、バケット8とアーム7と
で材木や大きな石等を抱き込んで保持する場合に、アー
ム7の曲がりを防止するとともに、保持した材木等に対
するすべり止めとなるように構成してある。図5に示す
ように、アーム7の主フレーム7Aの3方の面それぞれ
に、アーム7全長にわたってリブ7bを膨出形成してア
ーム7の強度をより高めるようにしてもよい。
As shown in FIG. 4, the arm 7 of the excavating operation device A is formed by welding a main frame 7A having a U-shaped cross section and an auxiliary frame 7B for closing the open side thereof, and both end edges of the auxiliary frame 7B. The portion 7a is bent toward the bucket 8 over its entire length, and when the timber or the large stone is held and held by the bucket 8 and the arm 7, the bend of the arm 7 is prevented and the held timber is provided. It is designed to prevent slipping. As shown in FIG. 5, a rib 7b may be formed to protrude over the entire length of the arm 7 on each of the three surfaces of the main frame 7A of the arm 7 to further increase the strength of the arm 7.

【0011】図1、2に示すように、上記掘削作業装置
A後方の旋回台1上において、エンジン3を、その出力
軸芯Pが旋回台1前後方向に沿う状態に配設するととも
に、そのエンジン3の後方にラジエータ9を配設してあ
る。このラジエータ9は押出式で、機体前方からエンジ
ン3を経て吸い込んだ空気を後方に吐出することで、操
縦席2周りの温度上昇を回避するとともにその吸込みに
伴なって掘削作業装置A用の旋回台1前部に配置のバル
ブ類10をも冷却できるように構成してある。
As shown in FIGS. 1 and 2, the engine 3 is disposed on the turntable 1 behind the excavating work device A so that the output axis P thereof extends along the front and rear direction of the turntable 1. A radiator 9 is provided behind the engine 3. The radiator 9 is of an extrusion type, which discharges air sucked from the front of the fuselage through the engine 3 to the rear to avoid a rise in the temperature around the cockpit 2 and to rotate the excavator A for the excavating work device A with the suction. The valves 10 arranged at the front of the table 1 can be cooled.

【0012】また、図2に示すように、上述のようにエ
ンジン3を前後向きに配設してラジエータ9をその後方
に位置させたことを利用して、その反対側の比較的嵩の
低い出力軸の端部とそれに付設の掘削作業装置A用のポ
ンプ類11を、操縦席2の下方に入り込ませてあり、旋
回台1における、前後方向での諸機器のための設置必要
長さを小さくして旋回半径の短小化、ひいては、図3に
示すように、旋回時に旋回台1がクローラ走行装置5の
側方に突出することをなくして、狭隘地での作業性の向
上を図ってある。
Further, as shown in FIG. 2, by utilizing the fact that the engine 3 is disposed in the front-rear direction and the radiator 9 is positioned behind the engine 3 as described above, the opposite side is relatively low in bulk. The end of the output shaft and the pumps 11 for the digging operation device A attached to the end of the output shaft are inserted under the cockpit 2. By reducing the size, the turning radius can be shortened, and as a result, as shown in FIG. 3, the turning table 1 does not protrude to the side of the crawler traveling device 5 during turning, thereby improving workability in a narrow place. is there.

【0013】また、図1に示すように、エンジン3の左
右には、そのエンジン3を縦置きしたことによって比較
的場所的な余裕ができたことを利用して、旋回台1の前
後長さを増大することなく、大容量の燃料タンク12と
作動油タンク13とを振分け配設してある。すなわち、
エンジン3は全て一様に嵩高いのではなく特に出力軸芯
Pに沿って嵩が変化することを鑑み、エンジン3をその
出力軸芯Pが旋回台1の前後方向に沿う状態に配設し、
エンジン3の後方にラジエータ9を配設することで、比
較的嵩高のラジエータ9とそれに引続くエンジン3中央
部の嵩高部分を除いた、出力軸端部及びそれに付設のポ
ンプ部分といった比較的嵩の低い部分を操縦席2下方に
入り込ませることを可能にして、旋回台1の前後方向の
長さを少しでも短くできるようにするとともに、いわば
縦置きにしたエンジン3の左右の比較的余裕のできた部
分に燃料タンク12と作動油タンク13とを振り分け配
置することで、旋回台1の前後方向での設置領域を増大
することなく、比較的大容量の両タンクをコンパクトに
旋回台1に搭載することを可能にしてある。
Also, as shown in FIG. 1, the left and right lengths of the swivel base 1 are provided on the left and right sides of the engine 3 by making use of the fact that the engine 3 is installed vertically so that a relatively large amount of space can be provided. The large-capacity fuel tank 12 and hydraulic oil tank 13 are allocated and arranged without increasing the number of fuel tanks. That is,
In view of the fact that the engines 3 are not all bulky but vary in bulk along the output shaft P in particular, the engine 3 is arranged with the output shaft P along the front and rear direction of the swivel 1. ,
By disposing the radiator 9 behind the engine 3, the relatively bulky radiator 9 and the subsequent bulky portion of the output shaft end and the pump portion attached thereto are removed except for the bulky portion at the center of the engine 3. By allowing the lower part to enter the cockpit 2 below, the length of the swivel base 1 in the front-rear direction can be shortened as much as possible. By arranging the fuel tank 12 and the hydraulic oil tank 13 separately in the portion, the relatively large-capacity tanks can be compactly mounted on the swivel 1 without increasing the installation area of the swivel 1 in the front-rear direction. It has made it possible.

【0014】これによって、エンジン3の一部を操縦席
2の下方に入り込ませて旋回台1の前後方向の寸法を短
くしながらも、タンク類の搭載のために支障を来するこ
とを回避でき、全体として、旋回台1の旋回半径をより
一層小さくして狭隘地での作業性向上を図れるようにし
ている。前記バックホウを図1〜3に基づいてさらに詳
細に説明する。左右クローラ走行装置5を有する走行機
台4に旋回台1を旋回自在に設け、この旋回台1の前部
に枢支部25を介して左右揺動自在に掘削作業装置Aを
設けている。
Thus, it is possible to reduce the length of the swivel base 1 in the front-rear direction by allowing a part of the engine 3 to enter into the lower part of the cockpit 2, but to avoid any trouble due to the mounting of tanks. As a whole, the turning radius of the turning table 1 is further reduced so that the workability in narrow places can be improved. The backhoe will be described in more detail with reference to FIGS. The swivel base 1 is rotatably provided on the traveling machine base 4 having the left and right crawler travel units 5, and an excavation work device A is provided at the front of the swivel base 1 via a pivotal support 25 so as to be swingable right and left.

【0015】旋回台1は左右に互いに略平行な側縁部2
0L、20Rを形成しており、この側縁部20L、20
Rは図2の前向き姿勢時に前後方向に沿いかつ左右クロ
ーラ走行装置5の外側端21から左右外方に突出してい
ない状態(非突出状態)となっている。前記側縁部20
L、20Rが構造物等(建築物、壁、土手、その他)と
なす角度によって、操縦者は操縦席2上から旋回台1の
旋回姿勢を視認できる。旋回台1は後部の後縁部22を
円弧形状に形成し、旋回台1を前向き姿勢から90度旋
回した図3の横向き姿勢時に、前記後縁部22を左右ク
ローラ走行装置5の外側端21から非突出状態(図3で
は、旋回台1の円弧状後縁部22の最外端をクローラ走
行装置5の外側端21と略一致した状態に図示してい
る。)に位置させている。前記後縁部22が左右クロー
ラ走行装置5の外側端21から突出しないことにより、
90度旋回した横向き姿勢時に、クローラ走行装置5を
構造物等へより近接でき、狭所作業性を向上できる。
The turntable 1 has side edges 2 substantially parallel to each other on the left and right.
0L and 20R are formed, and the side edge portions 20L and 20R are formed.
R is in a state along the front-rear direction and not projecting left and right outward from the outer end 21 of the left and right crawler traveling device 5 (non-projection state) in the forward posture of FIG. The side edge 20
The operator can visually recognize the turning posture of the turntable 1 from above the cockpit 2 depending on the angle between L and 20R with a structure or the like (building, wall, bank, etc.). The swivel 1 has a rear edge 22 formed in an arc shape, and when the swivel 1 is turned 90 degrees from the front position in the horizontal position in FIG. 3 (in FIG. 3, the outermost end of the arc-shaped rear edge 22 of the swivel 1 is shown in a state substantially coincident with the outer end 21 of the crawler traveling device 5). Since the trailing edge 22 does not project from the outer end 21 of the left and right crawler traveling device 5,
At the time of turning 90 degrees in the horizontal position, the crawler traveling device 5 can be brought closer to a structure or the like, and workability in a narrow place can be improved.

【0016】また、旋回台1を横向き姿勢にしたとき、
枢支部25も左右クローラ走行装置5の外側端21から
左右外方に非突出状態となる。前記旋回台1は、平面視
において、後縁部22が円弧形状であるが、左右に互い
に略平行でかつ前後方向に沿う側縁部20L、20Rを
有する略多角形状になっており、横向き姿勢時に枢支部
25がクローラ走行装置5の外側端21より内側に位置
している。これによって、前縁部23はもとより、枢支
部25から円弧状後縁部22までの旋回台1の略全長
を、左右クローラ走行装置5の外側端21間の範囲内に
略収められ、左右クローラ走行装置5が共に構造物等へ
より近接でき、狭所作業性を向上でき、前後バランスが
よく、安定性を良好にできる。
Further, when the swivel base 1 is in a horizontal position,
The pivot 25 is also in a non-protruding state from the outer end 21 of the left and right crawler traveling device 5 to the left and right. The swivel table 1 has a rear edge 22 in an arc shape in a plan view, but has a substantially polygonal shape having side edges 20L and 20R substantially parallel to each other on the left and right and along the front-rear direction. Sometimes the pivot 25 is located inside the outer end 21 of the crawler traveling device 5. As a result, substantially the entire length of the turntable 1 from the pivotal support 25 to the arc-shaped rear edge 22 as well as the front edge 23 is substantially contained within the range between the outer ends 21 of the left and right crawler traveling devices 5. Both of the traveling devices 5 can be closer to a structure or the like, workability in a narrow place can be improved, front-rear balance is good, and stability can be good.

【0017】図1の前向き姿勢時の旋回台1とクローラ
走行装置5との関係を見ると、旋回台1の側縁部20
L、20Rは、左右各クローラ走行装置5の幅27の中
央より内方に位置しており、旋回台1の左右側縁部20
L、20Rと左右クローラ走行装置5の外側端21との
間の左右クローラ走行装置5上には前後方向及び上方向
に開放された空間26を形成している。旋回台1上に搭
載されたエンジン3及び燃料タンク12及び作動油タン
ク13等はカバー28で包囲され、前記操縦席2はこの
カバー28の上に載置されている。このカバー28の左
右各側面と後面とは旋回台1の左右各側縁部20及び後
縁部22とそれぞれ略面一になっていて、前向き姿勢時
の旋回台1の左右側縁部20L、20Rとともに前記空
間26を形成するようになっている。
Referring to the relationship between the turntable 1 and the crawler traveling device 5 in the forward posture shown in FIG.
L and 20R are located inside the center of the width 27 of each of the right and left crawler traveling devices 5, and the left and right side edges 20
A space 26 is formed on the left and right crawler traveling device 5 between the L, 20R and the outer end 21 of the left and right crawler traveling device 5 so as to be open in the front-rear direction and the upward direction. The engine 3, the fuel tank 12, the hydraulic oil tank 13 and the like mounted on the swivel 1 are surrounded by a cover 28, and the cockpit 2 is placed on the cover 28. The left and right side surfaces and the rear surface of the cover 28 are substantially flush with the left and right side edge portions 20 and the rear edge portion 22 of the revolving base 1, respectively. The space 26 is formed together with 20R.

【0018】この左右の空間26は前側で、カバー28
及び操縦席2より前側の旋回台1の上面に形成したステ
ップ面29と通じている。前記左右空間26が存在する
ことにより、例えば、旋回台1を前向き姿勢にしてクロ
ーラ走行装置5と構造物等との間を作業者が歩くとき、
作業者の上体は側縁部20L、20R及びカバー28の
側面の高さに対応し、広い空間によって歩行が容易にな
り、また、操縦者がステップ面29から降りて旋回台1
の外側方を通行して、バックホウの後方へ行くことも可
能になり、狭所での作業性が向上される。
The left and right spaces 26 are on the front side and cover 28
And a step surface 29 formed on the upper surface of the swivel table 1 in front of the cockpit 2. Due to the presence of the left and right spaces 26, for example, when an operator walks between the crawler traveling device 5 and a structure or the like with the swivel 1 facing forward,
The upper body of the operator corresponds to the height of the side edges 20L and 20R and the side surface of the cover 28, and the large space facilitates walking, and the operator descends from the step surface 29 to turn the turntable 1
It is also possible to pass behind the backhoe and go behind the backhoe, thereby improving workability in narrow places.

【0019】また、カバー28の側面は、旋回台1の側
縁部20と面一でありかつ操縦席2の真横に位置するの
で、旋回台1を前向き姿勢にしたとき前後方向に沿う状
態となり、側縁部20より上位にありかつ操縦者の真横
に位置することにより、側縁部20よりも旋回台1の旋
回姿勢視認機能を発揮することができる。前記掘削作業
装置Aはブーム6の基部が旋回台1の前部の左右中間部
に枢支部25を介して左右揺動自在に設けられている
が、ブーム6は旋回台1の左右方向中心にはなく、右側
にずらされており、これに対して操縦席2及び操縦レバ
ー群31の左右方向中心は旋回台1の左右方向中心に対
して左側にずらされ、ブーム6の左側面と操縦席2及び
操縦レバー群31の右側部とが左右方向に近接配置して
いる。
Further, since the side surface of the cover 28 is flush with the side edge portion 20 of the swivel table 1 and is located right beside the cockpit 2, when the swivel table 1 is in the forward position, it is in the front-rear direction. By being positioned higher than the side edge portion 20 and positioned right beside the operator, the function of visually recognizing the turning posture of the turntable 1 can be exhibited more than the side edge portion 20. The excavation work device A is provided such that the base of the boom 6 is swingable left and right through a pivotal support 25 at the left and right intermediate portion of the front of the swivel 1. However, the center of the cockpit 2 and the control lever group 31 in the left-right direction is shifted to the left with respect to the center of the swivel platform 1 in the left-right direction. 2 and the right side of the control lever group 31 are arranged close to each other in the left-right direction.

【0020】図2の2点鎖線の状態からブーム6を持ち
上げていくと、ブーム6は旋回台1の上側まで移動しか
つ後傾斜状態(図2の実線状態)になるが、そのとき操
縦レバー群31とは干渉せず、操縦者の側方の操縦にも
問題にならない状態となり、逆にこれにより、操縦レバ
ー群31を旋回台1の前部に可及的に近づけて配置する
ことができ、操縦席2も従来技術に比して前側位置に配
置でき、旋回台1の前後長さを可及的に短くできること
になる。
When the boom 6 is lifted from the state shown by the two-dot chain line in FIG. 2, the boom 6 moves to the upper side of the swivel table 1 and is inclined backward (the solid line state in FIG. 2). There is no interference with the group 31 and there is no problem in maneuvering to the side of the operator. Conversely, this makes it possible to arrange the control lever group 31 as close to the front of the swivel 1 as possible. As a result, the cockpit 2 can also be disposed at the front position as compared with the related art, and the front-rear length of the swivel base 1 can be reduced as much as possible.

【0021】[0021]

【発明の効果】以上詳述した本発明によれば、旋回台1
は左右平行側縁部20L、20Rによる旋回姿勢視認性
を維持した上で、操縦席2の側方に位置するカバー28
の側面でも旋回姿勢を視認することができ、また、90
度旋回した横向き姿勢時に、後縁部22が左右クローラ
走行装置5の外側端21から突出することがなく、クロ
ーラ走行装置5を構造物等へより近接でき、狭所作業性
を向上でき、その上に、クローラ走行装置5を構造物等
へより近接した状態でも、旋回台1を前向き姿勢にした
とき、旋回台1及びカバー28の外側方を空間26を利
用して人が前後方向に容易に通行可能になり、ステップ
面29から空間26を通って旋回台1の後方へ移動する
ことができる。
According to the present invention described in detail above, the swivel 1
The cover 28 is located on the side of the cockpit 2 while maintaining the visibility of the turning posture by the left and right parallel side edges 20L and 20R.
The turning posture can also be visually recognized on the side of
In the laterally turned posture, the trailing edge portion 22 does not protrude from the outer end 21 of the left and right crawler traveling device 5, the crawler traveling device 5 can be brought closer to a structure or the like, and workability in a narrow place can be improved. Even when the crawler traveling device 5 is closer to a structure or the like, when the swivel base 1 is in the forward position, a person can easily use the space 26 outside the swivel base 1 and the cover 28 in the front-rear direction. Can be moved to the rear of the swivel 1 from the step surface 29 through the space 26.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の実施の形態を示す前向き姿勢時の一部
切欠平面図である。
FIG. 1 is a partially cutaway plan view showing a frontward posture of an embodiment of the present invention.

【図2】同一部切欠側面図である。FIG. 2 is a cutaway side view of the same part.

【図3】横向き姿勢時の正面図である。FIG. 3 is a front view in a horizontal posture.

【図4】アームの断面図である。FIG. 4 is a sectional view of an arm.

【図5】アームの別実施の形態を示す断面図である。FIG. 5 is a sectional view showing another embodiment of the arm.

【図6】従来技術を示す平面図である。FIG. 6 is a plan view showing a conventional technique.

【符号の説明】[Explanation of symbols]

1 旋回台 2 操縦席 3 エンジン 4 走行機台 5 クローラ走行装置 6 ブーム 9 ラジエータ 12 燃料タンク 13 作動油タンク 20 側縁部 21 外側端 22 後縁部 23 前縁部 25 枢支部 26 空間 27 幅 28 カバー 29 ステップ面 31 操縦レバー群 REFERENCE SIGNS LIST 1 turning table 2 cockpit 3 engine 4 traveling machine stand 5 crawler traveling device 6 boom 9 radiator 12 fuel tank 13 hydraulic oil tank 20 side edge 21 outer end 22 rear edge 23 front edge 25 pivotal support 26 space 27 width 28 Cover 29 Step surface 31 Control lever group

───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7,DB名) E02F 9/02 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 7 , DB name) E02F 9/02

Claims (2)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 左右クローラ走行装置(5)を有する走
行機台(4)に旋回台(1)を旋回自在に設け、この旋
回台(1)上にエンジン(3)及びタンクを搭載して
面視において旋回台(1)からはみ出さない状態のカバ
ー(28)で包囲し、前記旋回台(1)の前部でかつ操
縦席(2)の前方に左右揺動自在なブーム(6)を有す
掘削作業装置(A)を設け、旋回台(1)に前向き姿
勢時に操縦席(2)の左右側方で前後方向に沿う左右側
縁部(20L、20R)を形成しかつこの側縁部(20
L、20R)を左右クローラ走行装置(5)の外側端
(21)から左右外方に非突出状態とし、旋回台(1)
の後縁部(22)を円弧形状に形成し、旋回台(1)を
90度旋回した横向き姿勢時に、前記後縁部(22)を
左右クローラ走行装置(5)の外側端(21)から非突
出状態にし、カバー(28)の側面を旋回台(1)の側
縁部(20)と略面一にして旋回台(1)前向き姿勢時
に前後方向に沿わせ、前向き姿勢時の旋回台(1)の左
右側縁部(20L、20R)及びカバー(28)の側面
と左右クローラ走行装置(5)の外側端(21)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(26)を有していることを特徴とす
るバックホウ。
A swivel (1) is provided on a traveling machine (4) having a left and right crawler traveling device (5) so as to be able to swivel, and an engine (3) and a tank are mounted on the swivel (1). flat
It is surrounded by a cover (28) that does not protrude from the turntable (1) in a plan view, and is located in front of the turntable (1) and operated.
Has a boom (6) that can swing left and right in front of the vertical seat (2)
Excavating device (A) is provided that, the left and right side edges in the left and right sides along the longitudinal direction of the cockpit during positive attitude to the swivel base (1) (2) (20L , 20R) is formed and this side edge portion (20
L, 20R) from the outer end (21) of the left and right crawler traveling device (5) so as not to protrude left and right outward.
The rear edge (22) is formed in an arc shape, and the rear edge (22) is moved from the outer end (21) of the left and right crawler traveling device (5) when the swivel table (1) is turned 90 degrees in the horizontal position. Set the side of the cover (28) to the side of the swivel table (1) in a non-projecting state.
The swivel table (1) in a frontward posture, being substantially flush with the edge (20)
Between the left and right side edges (20L, 20R) of the revolving base (1) and the side surfaces of the cover (28) and the outer end (21) of the left and right crawler traveling device (5) in the forward posture. A backhoe having a space (26) opened in the front-rear direction and upward direction on the left and right crawler traveling device (5).
【請求項2】 前記ブーム(6)の後側でかつカバー
(28)及び操縦席(2)の前側の旋回台(1)前上面
に左右両空間(26)に通じるステップ面(29)を形
成していることを特徴とする請求項1に記載のバックホ
ウ。
2. A rear side of said boom (6) and a cover.
A step surface (29) communicating with both left and right spaces (26) is formed on a front upper surface of the turntable (1) in front of the cockpit (2) and the cockpit (2). The backhoe described in.
JP27028996A 1996-10-11 1996-10-11 Backhoe Expired - Lifetime JP3220390B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP27028996A JP3220390B2 (en) 1996-10-11 1996-10-11 Backhoe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP27028996A JP3220390B2 (en) 1996-10-11 1996-10-11 Backhoe

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP9465794A Division JP2886084B2 (en) 1994-05-09 1994-05-09 Backhoe swivel structure

Publications (2)

Publication Number Publication Date
JPH09165780A JPH09165780A (en) 1997-06-24
JP3220390B2 true JP3220390B2 (en) 2001-10-22

Family

ID=17484196

Family Applications (1)

Application Number Title Priority Date Filing Date
JP27028996A Expired - Lifetime JP3220390B2 (en) 1996-10-11 1996-10-11 Backhoe

Country Status (1)

Country Link
JP (1) JP3220390B2 (en)

Also Published As

Publication number Publication date
JPH09165780A (en) 1997-06-24

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