JP2000170205A - Hydraulic piping for working mechanism of hydraulic excavator and discharging structure for earth and sand that fall into vehicle body - Google Patents
Hydraulic piping for working mechanism of hydraulic excavator and discharging structure for earth and sand that fall into vehicle bodyInfo
- Publication number
- JP2000170205A JP2000170205A JP10351038A JP35103898A JP2000170205A JP 2000170205 A JP2000170205 A JP 2000170205A JP 10351038 A JP10351038 A JP 10351038A JP 35103898 A JP35103898 A JP 35103898A JP 2000170205 A JP2000170205 A JP 2000170205A
- Authority
- JP
- Japan
- Prior art keywords
- boom
- foot pin
- boom foot
- hydraulic
- vehicle body
- 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.)
- Granted
Links
Classifications
-
- 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
- E02F3/36—Component parts
- E02F3/38—Cantilever beams, i.e. booms;, e.g. manufacturing processes, forms, geometry or materials used for booms; Dipper-arms, e.g. manufacturing processes, forms, geometry or materials used for dipper-arms; Bucket-arms
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Component Parts Of Construction Machinery (AREA)
- Shovels (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、上部車体の旋回中
心位置寄りに起伏支点を有するオフセットブーム式の作
業機構を有し、作業機構と作業機構に装着された作業機
(バケット)を、上部車体の旋回半径内に折り込んで旋
回可能とした油圧ショベルに係るもので、ことに、作業
機構の油圧配管と作業機(以下バケットという)から上
部車体上に落下する落下土砂の排出関係構造を改良した
油圧ショベルに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an offset boom type working mechanism having an undulating fulcrum near a turning center position of an upper vehicle body. The working mechanism and a working machine (bucket) mounted on the working mechanism are mounted on an upper body. The present invention relates to a hydraulic excavator that can be folded and turned within the turning radius of a vehicle body, and in particular, has an improved structure related to discharge of fallen earth and sand falling from a hydraulic pipe of a working mechanism and a working machine (hereinafter referred to as a bucket) onto an upper vehicle body. Hydraulic excavator.
【0002】[0002]
【従来の技術】作業機構の油圧配管とバケットから上部
車体上に落下する土砂の排出関係構造については、例え
ば、実開平2−80162号公報があり、上部車体上に
落下する土砂の排出構造については、例えば、実開平4
−37646号公報、実開平6−53371号公報があ
り、作業機構の起伏支点からブーム背面に沿って油圧配
管を配設するものとして、実開平4−61150号公報
がある。2. Description of the Related Art Japanese Unexamined Utility Model Publication No. 2-80162 discloses, for example, a structure related to discharge of earth and sand falling from a hydraulic pipe of a working mechanism and a bucket onto an upper vehicle body. Is, for example,
JP-A-37646 and JP-A-6-53371, and JP-A-4-61150 discloses an arrangement in which hydraulic piping is provided along a back surface of a boom from a fulcrum of a working mechanism.
【0003】実開平2−80162号公報は、油圧配管
をブームの背面(後面)側に配設すると、油圧配管が邪
魔をして上部車体上に落下してくる土砂から上部車体搭
載機器を保護するための保護カバーを設けられないの
で、油圧配管をブームの前面側に配設して、土砂カバー
を設けるようにしたことを開示している。実開平4−3
7646号、実開平6−53371号は、起伏支点とな
るブームフートピンを取付けたブラケット回りに落下し
てくる土砂の排出構造について開示しているが、作業機
構への油圧配管の配設と関連した構造については言及し
ていない。実開平4−61150号は、ブームの背面側
に作業機構の油圧配管を配設したことを開示している
が、起伏支点となるブームフートピンを取付けたブラケ
ットの内側に落下してくる土砂の排出構造については言
及していない。[0003] Japanese Utility Model Application Laid-Open No. 2-80162 discloses that when hydraulic piping is arranged on the rear (rear) side of a boom, the hydraulic piping protects equipment mounted on the upper vehicle body from sediment that falls onto the upper vehicle body due to obstruction. It is disclosed that since a protective cover cannot be provided, the hydraulic piping is disposed on the front side of the boom to provide a soil cover. 4-3
No. 7646 and Japanese Utility Model Laid-Open No. 6-53371 disclose a structure for discharging earth and sand falling around a bracket to which a boom foot pin serving as an up and down fulcrum is attached. No mention is made of the structure used. Japanese Utility Model Laid-Open No. 4-61150 discloses that a hydraulic pipe of a working mechanism is disposed on the back side of a boom. However, it is difficult to prevent the earth and sand falling inside a bracket having a boom foot pin serving as a fulcrum. No mention is made of the emission structure.
【0004】[0004]
【発明が解決しようとする課題】上部車体の旋回中心位
置寄りに起伏支点を有するオフセットブーム式の作業機
構を有し、作業機構と作業機構に装着された作業機(バ
ケット)を、上部車体の旋回半径内に折り込んで旋回可
能とした油圧ショベルにあっては、上部車体の旋回半径
が車体幅内に収まるようにすることも求められ、上部車
体の旋回半径が車体幅内に収まるように上部車体に配置
する搭載機器のスペースを狭めることに苦心をしてい
る。そして、スペースを狭める手段として作業機構への
油圧配管をブームの側面側から背面側に変えてブーム側
方の配管配設隙間を少なくすることで、所望の目的を達
成しようとしている。しかし、油圧配管をブームの背面
側に配設するためには、実開平4−61150号公報に
見られるように、油圧配管を上部車体床下側から作業機
構の起伏支点となるブームフートピンを取付けるブラケ
ットの間をへて配設する必要があり、前述のブラケット
間の空間遮蔽が油圧配管の配設によって困難となり、そ
のブラケット間にバケットからの落下土砂が入り込むこ
とを阻止できなくなる。SUMMARY OF THE INVENTION An offset boom type working mechanism having an undulating fulcrum near a turning center position of an upper body is provided. The working mechanism and a work machine (bucket) mounted on the working mechanism are attached to the upper body. In the case of a hydraulic excavator that can be folded and turned within the turning radius, it is also required that the turning radius of the upper body fit within the body width. They are struggling to reduce the space for onboard equipment to be placed on the vehicle. Then, as a means for narrowing the space, the hydraulic pipe to the working mechanism is changed from the side surface of the boom to the back side to reduce the piping arrangement gap on the side of the boom, thereby achieving a desired object. However, in order to dispose the hydraulic piping on the back side of the boom, as shown in Japanese Utility Model Application Laid-Open No. 4-61150, a boom foot pin serving as a fulcrum of the working mechanism is mounted on the hydraulic piping from below the upper body floor. It is necessary to dispose the space between the brackets, and it is difficult to shield the space between the brackets by the arrangement of the hydraulic piping, and it is impossible to prevent the falling soil from the bucket from entering between the brackets.
【0005】このような問題の解決として、実開平6−
53371号公報にみられるように、作業機構の起伏支
点となるブームフートピンを取付けたブラケット間に入
り込む土砂をそのブラケット間の床下に土砂放出口を設
けて上部車体の下方に排出できるようにすればよいが、
上部車体の旋回中心寄りに位置する作業機構のブラケッ
トの下側には、上部車体の旋回機構があり、旋回機構を
避けた位置に土砂放出口を設けることが要求される。一
方、ブームの背面側に油圧配管を配設する場合、油圧配
管の車体側の固設点とブーム側の固設点との間に、ブー
ムの起伏揺動に伴う油圧配管の撓み変形空間が必要とな
るが、この空間を設けることはバケットからの落下土砂
の堆積箇所となる問題がある。As a solution to such a problem, Japanese Utility Model Application Laid-Open No.
As disclosed in Japanese Patent No. 53371, sediment entering between brackets to which a boom foot pin serving as an undulating fulcrum of a working mechanism is attached is provided below the floor between the brackets so that the earth and sand can be discharged below the upper vehicle body. What should I do,
The turning mechanism of the upper body is provided below the bracket of the working mechanism located near the turning center of the upper body, and it is required to provide a sediment discharge port at a position avoiding the turning mechanism. On the other hand, when the hydraulic piping is provided on the back side of the boom, the bending deformation space of the hydraulic piping due to the boom up and down swing is located between the fixed point of the hydraulic piping on the vehicle body side and the fixed point of the boom side. Although it is necessary, the provision of this space has a problem that it becomes a place where sediment falling from the bucket accumulates.
【0006】本発明は、作業機構のブームフートピンブ
ラケット間の空間内から油圧配管を作業機ブームの背面
側に配設しても、バケットから落下した土砂が油圧配管
の配管撓み変形空間に堆積せず、また、ブームフートピ
ンブラケット間に落下してくる土砂がブームフートピン
ブラケット間に堆積しないように、上部車体の旋回機構
位置を避けて上部車体の下側に放出することができるよ
うにした油圧ショベルの作業機構油圧配管と車体落下土
砂の排出構造を得ることを目的とする。According to the present invention, even if a hydraulic pipe is arranged on the back side of a working machine boom from within a space between boom foot pin brackets of a working mechanism, earth and sand dropped from a bucket accumulate in a pipe bending deformation space of the hydraulic pipe. In order to prevent the earth and sand falling between the boom foot pin brackets from accumulating between the boom foot pin brackets, it can be discharged to the lower side of the upper body avoiding the turning mechanism position of the upper body. It is an object of the present invention to obtain a hydraulic excavator working mechanism hydraulic piping and a body discharge structure for falling earth and sand.
【0007】[0007]
【課題を解決するための手段及び作用・効果】第1の発
明は、走行体1を備えた下部車体2に上部車体3を旋回
機構4で旋回自在に取付け、この上部車体3の左右幅方
向中間寄りに間隔を空けて車体前後方向に左右一対のブ
ームフートピンブラケット11,11を取付け、このブ
ームフートピンブラケット11間に作業機ブーム6をブ
ームフートピン12で揺動自在に連結して作業機構の起
伏支点とし、作業機構及び作業機を上部車体3の旋回半
径内に収めて旋回可能とした油圧ショベルにおいて、ブ
ームフートピンブラケット11,11の左右一方側に隣
接して機器収納室15の側壁16aを立て、他方側に隣
接して運転室5の側壁5aを立てて、ブームフートピン
ブラケット11,11の間隔間の上方側にブーム起伏空
間26を形成すると共に、ブームフートピンブラケット
11,11の車体後方側端部に隣接してエンジン収納室
18の前壁20を立て、ブームフートピン12とエンジ
ン収納室18の前壁20との間に、前記ブーム起伏空間
26に連なる配管撓み変形空間27を形成し、ブームフ
ートピン12とエンジン収納室18の前壁20との間の
ブームフートピンブラケット11,11間隔間を前記配
管撓み変形空間27に開口し、開口したブームフートピ
ンブラケット11の内側にブーム起伏空間26・配管撓
み変形空間27を上部車体下側へ連通にする土砂排出ダ
クト51と、油圧配管用空間28を設け、ブームフート
ピン12に近接したブームフートピンブラケット間隔内
部に油圧配管の中途部分を固定保持し、作業機ブーム6
のブームフートピン12寄りの位置に油圧配管の中途部
分を固定保持して、両固定保持間の間で油圧配管を前記
配管撓み変形空間27内に湾曲して位置するように、油
圧配管を作業機ブーム6の背面側に配設した油圧ショベ
ルの作業機構油圧配管と車体落下土砂の排出構造であ
る。According to a first aspect of the present invention, an upper vehicle body 3 is attached to a lower vehicle body 2 provided with a traveling body 1 so as to be freely rotatable by a revolving mechanism 4, and the upper vehicle body 3 is provided in a lateral direction. A pair of left and right boom foot pin brackets 11 and 11 are attached in the front-rear direction of the vehicle body at an interval toward the middle, and a work machine boom 6 is swingably connected between the boom foot pin brackets 11 with a boom foot pin 12. In a hydraulic shovel that can be turned while the working mechanism and the working machine are accommodated within the turning radius of the upper vehicle body 3 as a fulcrum of the mechanism, the equipment storage chamber 15 is located adjacent to one of the left and right sides of the boom foot pin brackets 11. The side wall 16a is erected, and the side wall 5a of the cab 5 is erected adjacent to the other side to form a boom undulating space 26 above the space between the boom foot pin brackets 11,11. In both cases, the front wall 20 of the engine storage room 18 is erected adjacent to the rear end portions of the boom foot pin brackets 11, 11 between the boom foot pin 12 and the front wall 20 of the engine storage room 18. A pipe bending deformation space 27 connected to the undulating space 26 is formed, and the pipe bending deformation space 27 is opened between the boom foot pins 12 and the front wall 20 of the engine storage chamber 18 between the boom foot pin brackets 11. Inside the opened boom foot pin bracket 11, there is provided a sediment discharge duct 51 that connects the boom up / down space 26 and the pipe deformation space 27 to the lower side of the upper vehicle body, and a space 28 for hydraulic piping, and is close to the boom foot pin 12. The middle part of the hydraulic piping is fixed and held inside the boom foot pin bracket interval
The middle of the hydraulic pipe is fixedly held at a position near the boom foot pin 12 and the hydraulic pipe is worked so that the hydraulic pipe is curved and positioned in the pipe bending deformation space 27 between the fixed holding. The hydraulic excavator has a working mechanism hydraulic pipe disposed on the rear side of the machine boom 6 and a structure for discharging the fallen soil from the vehicle body.
【0008】第1の発明によれば、ブーム起伏空間26
から配管撓み変形空間27に続く空間が土砂排出ダクト
51を通じて上部車体下方側につながるから、油圧配管
を作業機ブームの背面側に配設しても配管撓み変形空間
27内に土砂が滞留することがない。According to the first aspect, the boom undulation space 26 is provided.
Since the space following the pipe bending deformation space 27 is connected to the lower side of the upper vehicle body through the sediment discharge duct 51, even if the hydraulic pipe is arranged on the back side of the work equipment boom, the sediment stays in the pipe bending deformation space 27. There is no.
【0009】第2の発明は、第1の発明において、土砂
排出ダクト51を、前記配管撓み変形空間27に臨む受
け入れ口32a、斜めの底壁33、斜めの壁33の下部
の排出口32bとを有する落下土砂受箱32と、片側の
ブームフートピンブラケット11に開けた、前記落下土
砂受箱32の排出口32bを連通する排出連通口50
と、この排出連通口50をあけた片側ブームフートピン
ブラケット11の外側に位置して、排出連通口50から
旋回機構4の外周よりも離れた箇所に土砂を放出する土
砂排出箱45で構成した油圧ショベルの作業機構油圧配
管と車体落下土砂の排出構造である。According to a second aspect of the present invention, in the first aspect, the earth and sand discharge duct 51 is connected to the receiving port 32a facing the pipe bending deformation space 27, the inclined bottom wall 33, and the discharge port 32b below the inclined wall 33. And a discharge communication port 50 which is opened to the boom foot pin bracket 11 on one side and which communicates with the discharge port 32b of the falling sediment receiving box 32.
And a sediment discharge box 45 that is located outside the one-sided boom foot pin bracket 11 with the discharge communication port 50 opened, and discharges the sediment from the discharge communication port 50 to a location farther than the outer periphery of the turning mechanism 4. Hydraulic excavator work mechanism Hydraulic piping and a structure for discharging the sediment falling from the vehicle body.
【0010】第2の発明によれば、旋回機構4を回避し
た位置に土砂を排出することが可能となった。According to the second aspect, it is possible to discharge the earth and sand to a position where the turning mechanism 4 is avoided.
【0011】第3の発明は、第2の発明において前記左
右一対のブームフートピンブラケット11間における作
業機ブーム6の取付部下方から前方に亘って土砂排出ガ
イド30を取付けた油圧ショベルである。A third aspect of the present invention is the hydraulic shovel according to the second aspect of the present invention, wherein the earth and sand discharge guide 30 is mounted from below the mounting portion of the work implement boom 6 to the front between the pair of left and right boom foot pin brackets 11.
【0012】第3の発明によれば、左右一対のブームフ
ートピンブラケット11間における作業機ブーム6の取
付部よりも前方側に落下した土砂は土砂排出ガイド30
で排出されるので、左右一対のブームフートピンブラケ
ット11間に溜ることがない。According to the third aspect, the earth and sand that has fallen forward of the mounting portion of the work machine boom 6 between the pair of left and right boom foot pin brackets 11 is the earth and sand discharge guide 30.
, And does not accumulate between the pair of left and right boom foot pin brackets 11.
【0013】[0013]
【発明の実施の形態】図1に示すように、走行体1を備
えた下部車体2に上部車体3が旋回機構4で旋回自在に
取り付けてある。前記上部車体3には運転室5が取付け
てあると共に、作業機ブーム6が前方に向けて上下揺動
自在に取付けてある。この作業機ブーム6はオフセット
ブーム構成で、その先端部にアーム7が上下揺動自在に
連結されて上部車体の旋回中心位置寄りに起伏支点を有
するオフセットブーム式の作業機構を形成し、このアー
ム7に作業機、例えばバケット8が上下揺動自在に取付
けられて作業機構及び作業機を上部車体の旋回半径内に
収めて旋回可能とした油圧ショベルを形成している。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, an upper vehicle body 3 is attached to a lower vehicle body 2 provided with a traveling body 1 so as to be pivotable by a pivot mechanism 4. A driver's cab 5 is attached to the upper body 3, and a work implement boom 6 is attached to be able to swing up and down toward the front. The work machine boom 6 has an offset boom structure, and an arm 7 is connected to the tip of the work machine boom so as to be able to swing up and down to form an offset boom type working mechanism having a fulcrum near a turning center position of the upper vehicle body. A working machine, for example, a bucket 8 is attached to the upper and lower swingable to form a hydraulic excavator which is capable of turning the working mechanism and the working machine within the turning radius of the upper body.
【0014】前記作業機ブーム6と上部車体3に亘って
ブームシリンダ9が連結され、このブームシリンダ9を
伸縮することで作業機ブーム6は上下に揺動して仮想線
で示すように垂直姿勢Aよりも車体後方側に傾倒自在と
してある。A boom cylinder 9 is connected to the work machine boom 6 and the upper body 3, and by expanding and contracting the boom cylinder 9, the work machine boom 6 swings up and down to a vertical posture as shown by a virtual line. It is tiltable to the rear of the vehicle from A.
【0015】前記上部車体3は図2、図3、図4に示す
ように、底板10を備え、この底板10の左右中間で前
方寄り位置に車体前後方向に向う縦板状の左右一対のブ
ームフートピンブラケット11,11が間隔を置いて固
着してある。この左右一対のブームフートピンブラケッ
ト11,11間の上部寄りに作業機ブーム6がブームフ
ートピン12で上下揺動自在に取付けられて起伏支点と
してあり、その左右一対のブームフートピンブラケット
11の前端部寄りにブームシリンダ9がピン13で上下
揺動自在に取付けられる。前記ブームフートピン12と
底板10とは隔離している。The upper body 3 has a bottom plate 10 as shown in FIGS. 2, 3 and 4, and a pair of left and right booms in the form of a vertical plate facing the front and rear direction of the vehicle at a position between the bottom plate 10 and the left and right, toward the front. Foot pin brackets 11, 11 are fixed at intervals. A work machine boom 6 is attached to the upper part between the pair of left and right boom foot pin brackets 11, 11 so as to be vertically swingable with a boom foot pin 12, and serves as a fulcrum, and the front end of the pair of left and right boom foot pin brackets 11. The boom cylinder 9 is attached to the part so as to be able to swing up and down by a pin 13. The boom foot pin 12 and the bottom plate 10 are separated.
【0016】前記運転室5は上部車体3の左右一方側に
取付けられ、この運転室5の側壁5aは一方のブームフ
ートピンブラケット11と近接(接しても良い)し、こ
の側壁5aは一方のブームフートピンブラケット11と
隣接して立っている。この運転室5の底壁と底板10は
上下方向に離隔し、その部分にバルブ14等が配設して
ある。前記上部車体3の左右他方側には機器収納室15
が形成され、この機器収納室15を形成する側部カバー
体16の側壁16aが前記左右他方のブームフートピン
ブラケット11に接している。この側部カバー体16の
上面には蓋17で開閉される開口部を有する。前記側壁
16aは他方のブームフートピンブラケット11と隣接
して立っている。The operator's cab 5 is mounted on one of the left and right sides of the upper body 3. The side wall 5a of the operator's cab 5 is close to (or may be in contact with) one of the boom foot pin brackets 11, and the side wall 5a is on one side. It stands adjacent to the boom foot pin bracket 11. The bottom wall of the operator's cab 5 and the bottom plate 10 are vertically separated from each other, and a valve 14 and the like are provided in that portion. An equipment storage room 15 is provided on the other side of the upper body 3.
The side wall 16a of the side cover body 16 forming the device storage chamber 15 is in contact with the other boom foot pin bracket 11 on the left and right sides. The upper surface of the side cover body 16 has an opening that is opened and closed by a lid 17. The side wall 16a stands adjacent to the other boom foot pin bracket 11.
【0017】前記上部車体3の後部寄りにエンジン収納
室18が形成してある。このエンジン収納室18を形成
する後部カバー体19の前面19aにおける運転室側壁
5aと側部カバー体側壁16aとの間の部分(以下前壁
20という)は図3に示すように垂直に対して上部が下
部よりも後方寄りとなる斜めの上縦板21と垂直な下縦
板22でくの字形状で、下縦板22に固着した取付横板
23が取付横材24にボルト25で固着してある。この
取付横材24は左右一対のブームフートピンブラケット
11の上面間に跨って固着してある。An engine compartment 18 is formed near the rear of the upper body 3. A portion (hereinafter referred to as a front wall 20) between the cab side wall 5a and the side cover body side wall 16a on the front surface 19a of the rear cover body 19 forming the engine storage chamber 18 is perpendicular to the vertical as shown in FIG. The upper cross plate 23 is fixed to the lower cross plate 24 by bolts 25, and the upper cross plate 23 is fixed to the lower cross plate 24 by bolts 25. I have. The mounting cross member 24 is fixed across the upper surfaces of the pair of left and right boom foot pin brackets 11.
【0018】前記運転室側壁5a(一方のブームフート
ピンブラケット11)と側部カバー体側壁16a(他方
のブームフートピンブラケット11)と後部カバー体1
9の前壁20で車体前方に開口した平面形状コの字状の
ブーム起伏空間26を形成している。前記前壁20とブ
ームフートピン12との間の車体前後方向寸法は大き
く、この前壁20と作業機ブーム6の取付部(ブームフ
ートピン12)との間に車体前後方向寸法の大きな配管
撓み変形空間27を形成している。この配管撓み変形空
間27、ブームフートピン12は図2に示すように旋回
機構4を形成するリングギヤ4aの上方に位置してい
る。前記配管撓み変形空間27は左右一対のブームフー
トピンブラケット11間における作業機ブーム6の取付
部と底板10の間の配管用空間28に連通している。The cab side wall 5a (one boom foot pin bracket 11), the side cover body side wall 16a (the other boom foot pin bracket 11), and the rear cover 1
The 9 front wall 20 forms a boom-shaped up-and-down space 26 having a U-shape in plan view that is open to the front of the vehicle body. A longitudinal dimension of the vehicle body between the front wall 20 and the boom foot pin 12 is large, and a large pipe deflection between the front wall 20 and the mounting portion (the boom foot pin 12) of the work machine boom 6 in the longitudinal direction of the vehicle body. A deformation space 27 is formed. The pipe bending deformation space 27 and the boom foot pin 12 are located above the ring gear 4a forming the turning mechanism 4 as shown in FIG. The pipe bending deformation space 27 communicates with a pipe space 28 between the mounting portion of the work implement boom 6 and the bottom plate 10 between the pair of left and right boom foot pin brackets 11.
【0019】前記左右一対のブームフートピンブラケッ
ト11間の車体前方側部分に土砂排出ガイド30が取付
けてある。この土砂排出ガイド30は板状で、前端部3
0aが底板10の前端部に接し、後端部30bはブーム
フートピン12と接近して水平に対して車体前部側が低
く傾斜している。つまり、土砂排出ガイド30はブーム
フートピン12の下方位置から前端部に亘って傾斜して
取付けてある。A earth and sand discharge guide 30 is attached to a front portion of the vehicle body between the pair of left and right boom foot pin brackets 11. The earth and sand discharge guide 30 is plate-shaped and has a front end 3.
0a is in contact with the front end of the bottom plate 10, and the rear end 30b is close to the boom foot pin 12 and the front side of the vehicle body is inclined lower than horizontal. That is, the earth and sand discharge guide 30 is attached to be inclined from the position below the boom foot pin 12 to the front end.
【0020】これによって、左右一対のブームフートピ
ンブラケット11間におけるフートピン12から前方部
分に落下した土砂等は土砂排出ガイド30上に落下して
車体前部に排出される。この土砂排出ガイド30にはブ
ームシリンダ9の油圧配管が挿通する穴31が形成して
ある。具体的には土砂排出ガイド30に大きな開口部3
1aを形成し、この開口部31aの大部分を覆うカバー
31bを着脱自在に取付けてカバー31bと開口部31
aとで穴31を形成している。これによって、カバー3
1bを外すことで大きな開口部31aから油圧配管をブ
ームシリンダ9に着脱できる。前記後部カバー体19に
は蓋29で開閉される開口部が形成してある。As a result, the earth and sand that has fallen from the foot pin 12 to the front portion between the pair of left and right boom foot pin brackets 11 falls onto the earth and sand discharge guide 30 and is discharged to the front of the vehicle body. The earth and sand discharge guide 30 has a hole 31 through which the hydraulic piping of the boom cylinder 9 is inserted. Specifically, a large opening 3 is formed in the earth and sand discharge guide 30.
1a, and a cover 31b that covers most of the opening 31a is removably attached to the cover 31b and the opening 31a.
and a. Thereby, the cover 3
By removing 1b, the hydraulic piping can be attached to and detached from the boom cylinder 9 through the large opening 31a. The rear cover body 19 has an opening formed by a lid 29.
【0021】前記左右一対のブームフートピンブラケッ
ト11間のブームフートピン12よりも車体後方側部分
(つまり、前記配管撓み変形空間27の下方位置)には
落下土砂受箱(ダクト)32が取付けてある。この落下
土砂箱32は図5に示すように底壁33と一側縦壁34
と他側縦壁35で断面略上向きコ字形状で、底壁33は
左右方向に斜めで、受け入れ口32aと排出口32bを
有する。前記一側縦壁34の上部寄りは斜め上向きに傾
斜し、かつ先端面には平面コ字状の切欠部36が形成さ
れ、かつ孔37が形成してある。前記他側縦壁35の上
端部は水平で、半円形の切欠部38と孔39が形成して
ある。前記落下土砂受箱32の左右端面には図4、図
6、図7に示すようにシール材40は装着され、この各
シール材40が左右一対のブームフートピンブラケット
11の対向した内面に圧着するようにしてある。A falling sediment receiving box (duct) 32 is attached to a portion on the vehicle body rear side of the boom foot pin 12 between the pair of left and right boom foot pin brackets 11 (ie, a position below the pipe bending deformation space 27). is there. As shown in FIG. 5, the falling sand box 32 has a bottom wall 33 and a vertical wall 34 on one side.
The other vertical wall 35 has a substantially U-shaped cross section, and the bottom wall 33 is oblique in the left-right direction and has a receiving port 32a and a discharging port 32b. The upper side of the one-side vertical wall 34 is inclined obliquely upward, and a notch 36 having a flat U-shape is formed at the tip end surface, and a hole 37 is formed. The upper end of the other side vertical wall 35 is horizontal and has a semicircular cutout 38 and a hole 39 formed therein. As shown in FIG. 4, FIG. 6, and FIG. 7, seal materials 40 are mounted on the left and right end surfaces of the falling sediment receiving box 32, and these seal materials 40 are crimped on the opposed inner surfaces of the pair of left and right boom foot pin brackets 11. I have to do it.
【0022】前記落下土砂受箱32の一側縦壁34の孔
37よりボルト41をブームフートピンブラケット11
の内面に固着したナット部材42に螺合し、他側縦壁3
5の孔39よりボルト43を前記取付横板24に螺合し
て取付けられる。この時、前記ボルト25が切欠部38
に臨んで干渉しないようにしてある。The bolt 41 is attached to the boom foot pin bracket 11 through the hole 37 of the vertical wall 34 on one side of the falling sediment receiving box 32.
Is screwed into a nut member 42 fixed to the inner surface of
The bolt 43 is screwed into the mounting horizontal plate 24 through the hole 39 of No. 5 to be mounted. At this time, the bolt 25 is
To avoid interference.
【0023】前記底板10における落下土砂受箱32と
対向し、かつ前記リングギヤ4aと干渉しない位置に土
砂排出口44が形成してあり、この土砂排出口44の開
口縁に土砂排出箱(シュータ)45が取付けてある。こ
の土砂排出箱45は図5に示すように筒部46の下端縁
に取付片47を一体的に設けると共に、筒部46の一側
方上部が側方に突出して土砂入口部48を形成してい
る。A sediment discharge port 44 is formed on the bottom plate 10 at a position facing the falling sediment receiving box 32 and not interfering with the ring gear 4a, and a sediment discharging box (shooter) is formed at an opening edge of the sediment discharging port 44. 45 is attached. As shown in FIG. 5, the earth and sand discharge box 45 has a mounting piece 47 integrally provided at a lower end edge of the cylindrical portion 46, and an upper portion of one side of the cylindrical portion 46 projects sideward to form a soil and sand inlet portion 48. ing.
【0024】図4に示すように、取付片47を底板10
にボルト49で取付け、土砂入口部48がブームフート
ピンブラケット11に形成した排出連通口50より内部
に突出している。前記落下土砂受箱32の下部が土砂入
口部48に嵌まり込んで落下土砂受箱32の内部(排出
口32b)と土砂排出箱45の内部(土砂入口部48)
が連続している。これによって土砂排出ダクト51を形
成している。この土砂排出ダクト51は作業機ブーム6
と対向した土砂入口52と土砂排出口44と連続した土
砂出口53を有し、その土砂出口53は土砂入口52よ
りも左右一側方にずれている。As shown in FIG. 4, the mounting piece 47 is
The earth and sand inlet portion 48 protrudes inward from a discharge communication port 50 formed in the boom foot pin bracket 11. The lower part of the falling sediment receiving box 32 is fitted into the sediment inlet 48, and the inside of the falling sediment receiving box 32 (discharge port 32b) and the inside of the sediment discharging box 45 (sediment inlet 48).
Is continuous. This forms the earth and sand discharge duct 51. The earth and sand discharge duct 51 is used for the work equipment boom 6.
And a sediment outlet 53 that is continuous with the sediment inlet 52 and the sediment discharge outlet 44 that face each other.
【0025】このようであるから、作業機ブーム6を垂
直姿勢よりも車体後方側に後傾した時にブーム起伏空間
26におけるブームフートピン12よりも車体後方側に
落下した土砂等は落下土砂受箱32、土砂排出箱45を
通って土砂排出口44から落下排出される。また、落下
排出される土砂等は旋回機構4よりも外側に排出され、
その旋回機構4内に土砂等が入り込むことがない。As described above, when the working machine boom 6 is tilted rearward from the vertical posture to the rear side of the vehicle body, the soil and the like that has fallen behind the boom foot pin 12 in the boom hoisting space 26 behind the vehicle body are fallen sediment receiving boxes. 32, it is dropped and discharged from the earth and sand discharge port 44 through the earth and sand discharge box 45. In addition, the earth and the like which are dropped and discharged are discharged outside the turning mechanism 4,
No earth and sand enter the turning mechanism 4.
【0026】図2に示すバルブ14に直接又はパイプを
経て接続した油圧配管、例えば油圧ホース60は図3に
示すように一方のブームフートピンブラケット11の開
口窓61を通って前記配管用空間28内に突出し土砂排
出ガイド30の後端部30b(ブームフートピン12の
下方位置)にホースクランプ62で保持され、落下土砂
受箱32の一側縦壁34の切欠部36を通って配管撓み
変形空間27を経て作業機ブーム6の背面6aの下部寄
りにホースクランプ63で保持される。この油圧ホース
60の端部は作業機ブーム6の背面6aに沿って配設さ
れた油圧配管64に接続される。なお、パイプを開口窓
61から配管用空間28内に突出しても良い。つまり油
圧ホース60はバルブ14側に接続していれば良い。前
記油圧配管64はパイプでも良いし、ホースでも良い。A hydraulic pipe, for example, a hydraulic hose 60 connected directly or via a pipe to the valve 14 shown in FIG. 2 passes through the opening window 61 of one boom foot pin bracket 11 as shown in FIG. And is held by a hose clamp 62 at a rear end portion 30 b (a position below the boom foot pin 12) of the earth and sand discharge guide 30, and is bent and deformed through the notch 36 of the one side vertical wall 34 of the falling earth and sand receiving box 32. The work machine boom 6 is held by a hose clamp 63 near a lower portion of the back surface 6a through the space 27. The end of the hydraulic hose 60 is connected to a hydraulic pipe 64 disposed along the back surface 6a of the work implement boom 6. The pipe may project from the opening window 61 into the piping space 28. That is, the hydraulic hose 60 may be connected to the valve 14 side. The hydraulic piping 64 may be a pipe or a hose.
【0027】このようであるから、作業機ブーム6を垂
直姿勢よりも車体後方側に後傾した状態で油圧ホース6
0を配管撓み変形空間27内で車体前後方向に大きく湾
曲させることが可能となり、たわみによって油圧ホース
60が損傷しない。作業機ブーム6を前傾した状態では
たわんでいた油圧ホース60が直線状となり、さらに前
傾するとブームフートピン12(作業機ブーム揺動中
心)の回りに沿って円弧状に湾曲するので油圧ホース6
0が損傷しない。As described above, the hydraulic hose 6 is mounted in a state where the work implement boom 6 is tilted rearward from the vertical position toward the rear of the vehicle body.
0 can be largely bent in the longitudinal direction of the vehicle body in the pipe bending deformation space 27, and the hydraulic hose 60 is not damaged by the bending. When the working machine boom 6 is tilted forward, the bent hydraulic hose 60 becomes straight, and when the working machine boom 6 is further tilted forward, the hydraulic hose 60 bends in an arc around the boom foot pin 12 (working machine boom swing center). 6
0 is not damaged.
【0028】つまり、車体前後方向寸法の大きな配管撓
み変形空間27を形成したことにより、ホースクランプ
62とホースクランプ63間の油圧ホース60の長さを
作業機ブーム6が最も前傾した状態で油圧ホース60が
損傷しない程度の長さとし、作業機ブーム6が垂直姿勢
よりも車体後方側に後傾した時にその油圧ホース60が
配管撓み変形空間27内で損傷しない程度の大きさに湾
曲変形してたわませることができる。That is, since the pipe bending deformation space 27 having a large size in the longitudinal direction of the vehicle body is formed, the length of the hydraulic hose 60 between the hose clamp 62 and the hose clamp 63 is reduced in a state where the work machine boom 6 is inclined most forward. The hydraulic hose 60 is bent and deformed to a size that does not damage the hydraulic hose 60 in the pipe bending deformation space 27 when the work machine boom 6 is tilted backward from the vertical posture toward the rear of the vehicle body. Can bend.
【0029】次に土砂排出ダクトの第2の実施の形態を
図8、図9、図10に基づいて説明する。落下土砂受箱
32に取付縦片34aを設け、この取付縦片34aをボ
ルト41でブームフートピンブラケット11に固着す
る。他側縦壁35はブームフートピンブラケット11に
固着したナット部材35aにボルト43を螺合して取付
ける。土砂排出箱45の筒部46の上縁に取付片47を
設け、この取付片47をボルト49でブームフートピン
ブラケット11に取付ける。この筒部46は左右方向に
斜めで、その土砂入口部48に落下土砂受箱32の土砂
出口部分(排出口32b部分)が嵌合されて底壁33が
筒部46の底面46aと一直線状に連続している。この
ようにすることで、土砂をスムーズに排出することがで
きる。Next, a second embodiment of the earth and sand discharge duct will be described with reference to FIGS. 8, 9 and 10. FIG. A mounting vertical piece 34a is provided on the falling earth and sand receiving box 32, and the mounting vertical piece 34a is fixed to the boom foot pin bracket 11 with a bolt 41. The other vertical wall 35 is attached by screwing a bolt 43 to a nut member 35a fixed to the boom foot pin bracket 11. A mounting piece 47 is provided on the upper edge of the cylindrical portion 46 of the earth and sand discharge box 45, and the mounting piece 47 is mounted on the boom foot pin bracket 11 with a bolt 49. The cylindrical portion 46 is slanted in the left-right direction, and a sediment outlet portion (a discharge port 32b portion) of the falling sediment receiving box 32 is fitted into the sediment inlet portion 48 so that the bottom wall 33 is aligned with the bottom surface 46a of the cylindrical portion 46. It is continuous. By doing so, the earth and sand can be discharged smoothly.
【図1】油圧ショベルの正面図である。FIG. 1 is a front view of a hydraulic excavator.
【図2】上部車体の平面図である。FIG. 2 is a plan view of an upper vehicle body.
【図3】上部車体の作業機ブーム取付部を破断した正面
図である。FIG. 3 is a front view in which a work machine boom mounting portion of an upper body is broken.
【図4】土砂排出ダクト部分の左側面図である。FIG. 4 is a left side view of the earth and sand discharge duct portion.
【図5】土砂排出ダクトの斜視図である。FIG. 5 is a perspective view of the earth and sand discharge duct.
【図6】図2のブームフートピンブラケット部分の拡大
図である。FIG. 6 is an enlarged view of a boom foot pin bracket part of FIG. 2;
【図7】図3のブームフートピンブラケット部分の拡大
図である。FIG. 7 is an enlarged view of a boom foot pin bracket part of FIG. 3;
【図8】土砂排出ダクトの第2の実施の形態を示す平面
図である。FIG. 8 is a plan view showing a second embodiment of the earth and sand discharge duct.
【図9】土砂排出ダクトの第2の実施の形態を示す断面
図である。FIG. 9 is a sectional view showing a second embodiment of the earth and sand discharge duct.
【図10】土砂排出ダクトの第2の実施の形態を示す左
側面図である。FIG. 10 is a left side view showing a second embodiment of the earth and sand discharge duct.
1…走行体 2…下部車体 3…上部車体 4…旋回機構 5…運転室 5a…側壁 6…作業機ブーム 6a…背面 10…底板 11…ブームフートピンブラケット 12…ブームフートピン 15…機器収納室 16a…側壁 18…エンジン収納室 20…前壁 26…ブーム起伏空間 27…配管撓み変形空間 28…配管用空間 30…土砂排出ガイド 32…落下土砂受箱 32a…受け入れ口 32b…排出口 33…底壁 44…土砂排出口 45…土砂排出箱 50…排出連通口 51…土砂排出ダクト 52…土砂入口 53…土砂出口 60…油圧ホース(油圧配管) 62…ホースクランプ 63…ホースクランプ 64…油圧配管 DESCRIPTION OF SYMBOLS 1 ... Running body 2 ... Lower body 3 ... Upper body 4 ... Revolving mechanism 5 ... Operating room 5a ... Side wall 6 ... Work implement boom 6a ... Back surface 10 ... Bottom plate 11 ... Boom foot pin bracket 12 ... Boom foot pin 15 ... Equipment storage room 16a ... side wall 18 ... engine storage room 20 ... front wall 26 ... boom undulating space 27 ... pipe bending deformation space 28 ... piping space 30 ... earth and sand discharge guide 32 ... falling earth and sand receiving box 32a ... receiving port 32b ... discharge port 33 ... bottom Wall 44: Sediment discharge port 45: Sediment discharge box 50: Discharge communication port 51: Sediment discharge duct 52: Sediment inlet 53: Sediment outlet 60: Hydraulic hose (hydraulic piping) 62: Hose clamp 63: Hose clamp 64: Hydraulic piping
Claims (3)
上部車体(3)を旋回機構(4)で旋回自在に取付け、
この上部車体(3)の左右幅方向中間寄りに間隔を空け
て車体前後方向に左右一対のブームフートピンブラケッ
ト(11),(11)を取付け、このブームフートピン
ブラケット(11)間に作業機ブーム(6)をブームフ
ートピン(12)で揺動自在に連結して作業機構の起伏
支点とし、作業機構及び作業機を上部車体(3)の旋回
半径内に収めて旋回可能とした油圧ショベルにおいて、 ブームフートピンブラケット(11),(11)の左右
一方側に隣接して機器収納室(15)の側壁(16a)
を立て、他方側に隣接して運転室(5)の側壁(5a)
を立てて、ブームフートピンブラケット(11),(1
1)の間隔間の上方側にブーム起伏空間(26)を形成
すると共に、ブームフートピンブラケット(11),
(11)の車体後方側端部に隣接してエンジン収納室
(18)の前壁(20)を立て、ブームフートピン(1
2)とエンジン収納室(18)の前壁(20)との間
に、前記ブーム起伏空間(26)に連なる配管撓み変形
空間(27)を形成し、ブームフートピン(12)とエ
ンジン収納室(18)の前壁(20)との間のブームフ
ートピンブラケット(11),(11)間隔間を前記配
管撓み変形空間(27)に開口し、開口したブームフー
トピンブラケット(11)の内側にブーム起伏空間(2
6)・配管撓み変形空間(27)を上部車体下側へ連通
にする土砂排出ダクト(51)と、油圧配管用空間(2
8)を設け、ブームフートピン(12)に近接したブー
ムフートピンブラケット間隔内部に油圧配管の中途部分
を固定保持し、作業機ブーム(6)のブームフートピン
(12)寄りの位置に油圧配管の中途部分を固定保持し
て、両固定保持間の間で油圧配管を前記配管撓み変形空
間(27)内に湾曲して位置するように、油圧配管を作
業機ブーム(6)の背面側に配設した油圧ショベルの作
業機構油圧配管と車体落下土砂の排出構造。An upper vehicle body (3) is attached to a lower vehicle body (2) having a traveling body (1) by a revolving mechanism (4) so as to be freely rotatable.
A pair of left and right boom foot pin brackets (11) are attached in the front-rear direction of the vehicle body at an interval near the middle in the left-right width direction of the upper vehicle body (3), and a working machine is interposed between the boom foot pin brackets (11). A hydraulic excavator in which the boom (6) is swingably connected by a boom foot pin (12) to serve as an up and down fulcrum of the working mechanism, and the working mechanism and the working machine can be turned within the turning radius of the upper body (3). A side wall (16a) of the equipment storage room (15) adjacent to one of the left and right sides of the boom foot pin brackets (11), (11).
And the side wall (5a) of the cab (5) adjacent to the other side
And set the boom foot pin bracket (11), (1
A boom undulation space (26) is formed on the upper side between the intervals 1), and the boom foot pin bracket (11),
The front wall (20) of the engine storage room (18) is erected near the rear end of the vehicle body of (11), and the boom foot pin (1) is set up.
A pipe bending deformation space (27) connected to the boom undulation space (26) is formed between the boom foot pin (12) and the engine storage room between the 2) and the front wall (20) of the engine storage room (18). A space between the boom foot pin bracket (11) and the front wall (20) of (18) is opened in the pipe bending deformation space (27), and the inside of the opened boom foot pin bracket (11). Boom undulating space (2
6) A sediment discharge duct (51) that connects the pipe bending deformation space (27) to the lower side of the upper vehicle body, and a hydraulic pipe space (2).
8) is provided to fix and hold an intermediate portion of the hydraulic pipe in the space between the boom foot pin brackets adjacent to the boom foot pin (12), and to provide a hydraulic pipe at a position near the boom foot pin (12) of the work machine boom (6). The hydraulic pipe is fixedly held in the middle part of the working machine boom (6) so that the hydraulic pipe is curved and positioned in the pipe bending deformation space (27) between the fixed holding. Hydraulic piping for the working mechanism of the hydraulic excavator installed and a structure for discharging sediment falling from the vehicle.
み変形空間(27)に臨む受け入れ口(32a)、斜め
の底壁(33)、斜めの底壁(33)の下部の排出口
(32b)とを有する落下土砂受箱(32)と、 片側のブームフートピンブラケット(11)に開けた、
前記落下土砂受箱(32)の排出口(32b)に連通す
る排出連通口(50)と、この排出連通口(50)をあ
けた片側ブームフートピンブラケット(11)の外側に
位置して、排出連通口(50)から旋回機構(4)の外
周よりも離れた箇所に土砂を放出する土砂排出箱(4
5)で構成した請求項1記載の油圧ショベルの作業機構
油圧配管と車体落下土砂の排出構造。2. A sediment discharge duct (51) having a receiving port (32a) facing the pipe bending deformation space (27), a slanted bottom wall (33), and a lower discharge port of the slanted bottom wall (33). 32b), and opened on one side of the boom foot pin bracket (11).
A discharge communication port (50) communicating with a discharge port (32b) of the falling sediment receiving box (32), and a single-sided boom foot pin bracket (11) provided with the discharge communication port (50); A sediment discharge box (4) that discharges sediment from the discharge communication port (50) to a location away from the outer periphery of the turning mechanism (4).
5. The hydraulic excavator working mechanism hydraulic piping and the vehicle body discharge structure according to claim 1, wherein
ット(11)間における作業機ブーム(6)の取付部下
方から前方に亘って土砂排出ガイド(30)を取付けた
請求項2記載の油圧ショベルの作業機構油圧配管と車体
落下土砂の排出構造。3. The hydraulic excavator according to claim 2, wherein a sediment discharge guide (30) is attached to a portion between the pair of left and right boom foot pin brackets (11) from below a mounting portion of the work implement boom (6) and forward. Work mechanism Hydraulic piping and body discharge structure for falling earth and sand.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP35103898A JP3902879B2 (en) | 1998-12-10 | 1998-12-10 | Hydraulic excavator working mechanism hydraulic piping and body falling sediment discharge structure |
KR1019990056460A KR100592814B1 (en) | 1998-12-10 | 1999-12-10 | The hydraulic arrangement of working mechanism and the structure of soil discharge for excavator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP35103898A JP3902879B2 (en) | 1998-12-10 | 1998-12-10 | Hydraulic excavator working mechanism hydraulic piping and body falling sediment discharge structure |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2000170205A true JP2000170205A (en) | 2000-06-20 |
JP3902879B2 JP3902879B2 (en) | 2007-04-11 |
Family
ID=18414629
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP35103898A Expired - Fee Related JP3902879B2 (en) | 1998-12-10 | 1998-12-10 | Hydraulic excavator working mechanism hydraulic piping and body falling sediment discharge structure |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP3902879B2 (en) |
KR (1) | KR100592814B1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2825106A1 (en) * | 2001-05-28 | 2002-11-29 | Kubota Kk | HYDRAULIC TUBE GUIDANCE EXCAVATOR |
JP2007231669A (en) * | 2006-03-02 | 2007-09-13 | Kubota Corp | Revolving work machine |
EP2045400A1 (en) * | 2007-10-01 | 2009-04-08 | Volvo Construction Equipment Holding Sweden AB | Apparatus for fixing hydraulic pipes for zero tail swing excavator |
JP2015068013A (en) * | 2013-09-27 | 2015-04-13 | 日立建機株式会社 | Construction machine |
-
1998
- 1998-12-10 JP JP35103898A patent/JP3902879B2/en not_active Expired - Fee Related
-
1999
- 1999-12-10 KR KR1019990056460A patent/KR100592814B1/en not_active IP Right Cessation
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2825106A1 (en) * | 2001-05-28 | 2002-11-29 | Kubota Kk | HYDRAULIC TUBE GUIDANCE EXCAVATOR |
JP2007231669A (en) * | 2006-03-02 | 2007-09-13 | Kubota Corp | Revolving work machine |
JP4698443B2 (en) * | 2006-03-02 | 2011-06-08 | 株式会社クボタ | Swivel work machine |
EP2045400A1 (en) * | 2007-10-01 | 2009-04-08 | Volvo Construction Equipment Holding Sweden AB | Apparatus for fixing hydraulic pipes for zero tail swing excavator |
JP2015068013A (en) * | 2013-09-27 | 2015-04-13 | 日立建機株式会社 | Construction machine |
Also Published As
Publication number | Publication date |
---|---|
KR100592814B1 (en) | 2006-06-23 |
KR20000048065A (en) | 2000-07-25 |
JP3902879B2 (en) | 2007-04-11 |
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