JP2008038502A - Working traveling vehicle - Google Patents

Working traveling vehicle Download PDF

Info

Publication number
JP2008038502A
JP2008038502A JP2006215453A JP2006215453A JP2008038502A JP 2008038502 A JP2008038502 A JP 2008038502A JP 2006215453 A JP2006215453 A JP 2006215453A JP 2006215453 A JP2006215453 A JP 2006215453A JP 2008038502 A JP2008038502 A JP 2008038502A
Authority
JP
Japan
Prior art keywords
cab
stopper
stopper member
uppermost
hydraulic cylinder
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.)
Withdrawn
Application number
JP2006215453A
Other languages
Japanese (ja)
Inventor
Eiji Akabane
英司 赤羽根
Hiroaki Ando
博昭 安藤
Akiyasu Yamada
晃廉 山田
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.)
Caterpillar Japan Ltd
Caterpillar Mitsubishi Ltd
Original Assignee
Caterpillar Mitsubishi Ltd
Shin Caterpillar Mitsubishi Ltd
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 Caterpillar Mitsubishi Ltd, Shin Caterpillar Mitsubishi Ltd filed Critical Caterpillar Mitsubishi Ltd
Priority to JP2006215453A priority Critical patent/JP2008038502A/en
Publication of JP2008038502A publication Critical patent/JP2008038502A/en
Withdrawn legal-status Critical Current

Links

Images

Landscapes

  • Component Parts Of Construction Machinery (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a working traveling vehicle which can hoist and lower a cab 12 between uppermost-end and lowermost-end positions by the telescopic operation of a hydraulic cylinder 14 in the state of ascendably/descendably supporting the cab 12 on a base 9 erected on a machine body frame 8 via parallel links 10 and 11, and which can stably support the cab 12 in the uppermost-end position of the cab 12. <P>SOLUTION: The upper and lower parallel links 10 and 11 are provided with a stopper member 15 which mutually abuts on the cab 12 in the uppermost-end position, and an upper stopper receiver 16, respectively, so that the cab 12 can be stably supported. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、昇降キャブを備えた油圧ショベル等の作業用走行車の技術分野に属するものである。   The present invention belongs to a technical field of a working vehicle such as a hydraulic excavator provided with a lifting cab.

一般に、この種建設機械の中には、オペレータが乗り込んで作業するキャブを昇降自在にして高位置視界で作業ができるようにしたものがある。そしてこの場合に、機体フレームに立設した基台に平行リンク機構等の4節リンク機構を介してキャブを取り付け、該リンク機構を油圧シリンダの伸縮で昇降させてキャブの昇降をするようにしたものが知られている(例えば特許文献1、2参照)。
特開2004−330946号公報 特開2006−37604号公報
In general, there is a construction machine of this type in which a cab on which an operator gets on can work in a high position view by moving up and down freely. In this case, a cab is attached to a base standing on the body frame via a four-link mechanism such as a parallel link mechanism, and the link mechanism is moved up and down by expansion and contraction of a hydraulic cylinder so as to move the cab up and down. Those are known (for example, see Patent Documents 1 and 2).
JP 2004-330946 A JP 2006-37604 A

ところで前記従来のものは、キャブを最下部位置にセットした場合、キャブは機体本体に直接的に支持される構造になるため問題はないが、最上部位置にセットした場合、キャブはシリンダエンドで支持する構成にならざるを得ないことになって安定性を確保することが難しく、このためキャブは片持ち状になって機体本体の振動が増幅されたもので振動する惧れがあって安定した作業が損なわれるという問題があり、ここに本発明が解決すべき課題がある。   By the way, in the conventional case, when the cab is set at the lowermost position, there is no problem because the cab has a structure that is directly supported by the main body, but when the cab is set at the uppermost position, the cab is at the cylinder end. It is difficult to ensure stability because it has to be a supporting structure, and for this reason, the cab is cantilevered and the vibration of the fuselage body is amplified and stable and may be vibrated There is a problem that the work performed is impaired, and there is a problem to be solved by the present invention.

本発明は、上記の如き実情に鑑みこれらの課題を解決することを目的として創作されたものであって、請求項1の発明は、機体フレームに4節リンク機構を介してキャブを昇降自在にし、油圧シリンダの伸縮作動でキャブの昇降をするように構成してなる作業用走行車において、前記4節リンク機構に、キャブを最上端に上昇させた場合に互いに当接してキャブの支持をするストッパ部材とストッパ受けとを設けたことを特徴とする作業用走行車である。
請求項2の発明は、4節リンク機構は平行リンク機構であり、キャブを最上端に上昇させた場合にストッパ部材に当接する上ストッパ受けの他に、キャブを最下端に下降させた場合にストッパ部材に当接する下ストッパ受けが設けられていることを特徴とする請求項1記載の作業用走行車である。
請求項3の発明は、キャブを最上端位置に上昇したときのストッパ部材と上ストッパ受けとの当接位置は、側面視で油圧シリンダの平行リンク機構取り付け部位であることを特徴とする請求項2記載の作業用走行車である。
The present invention was created with the object of solving these problems in view of the above-mentioned circumstances, and the invention of claim 1 allows the cab to be moved up and down via a four-bar linkage mechanism in the body frame. In the working vehicle configured to move the cab up and down by the expansion and contraction operation of the hydraulic cylinder, the cab is supported by the four-bar linkage mechanism when the cab is lifted to the uppermost end. A working vehicle characterized in that a stopper member and a stopper receiver are provided.
In the invention of claim 2, the four-bar link mechanism is a parallel link mechanism, and when the cab is lowered to the lowermost end in addition to the upper stopper receiver that contacts the stopper member when the cab is raised to the uppermost end. The working traveling vehicle according to claim 1, further comprising a lower stopper receiver that abuts against the stopper member.
The invention according to claim 3 is characterized in that the contact position between the stopper member and the upper stopper receiver when the cab is raised to the uppermost end position is a portion where the hydraulic cylinder parallel link mechanism is attached in a side view. The working vehicle according to 2.

請求項1の発明とすることで、4節リンク機構を用いてキャブを最上端に上昇させた場合に、4節リンク機構に設けたストッパ部材とストッパ受け同志が当接することになってキャブの支持をすることができ、これによって高位置に位置するキャブの姿勢安定化が図れ振動を低減することができる。
請求項2の発明とすることで、キャブを最下端にしたときにおいてもストッパ部材と下ストッパ受けとの当接によってキャブの安定化が図れることになる。
請求項3の発明とすることで、ストッパ部材と上ストッパ受けとの当接位置が側面視で油圧シリンダの取り付け部位になる結果、より確実な支持ができることになる。
According to the first aspect of the present invention, when the cab is raised to the uppermost end by using the four-bar linkage mechanism, the stopper member provided in the four-bar linkage mechanism and the stopper receivers come into contact with each other, so that the cab It is possible to support the cab, thereby stabilizing the posture of the cab located at a high position and reducing vibration.
According to the invention of claim 2, even when the cab is at the lowermost end, the cab can be stabilized by the contact between the stopper member and the lower stopper receiver.
According to the invention of claim 3, as a result of the contact position between the stopper member and the upper stopper receiver being the attachment portion of the hydraulic cylinder in a side view, more reliable support can be achieved.

次ぎに、本発明の実施の形態について図面に基づいて説明する。図中、1は油圧ショベルの走行機体であって、該走行機体1は、クローラ式の下部走行体2に、バケット3、アーム4、ブーム5から構成されるフロントアタッチメント6を備えた上部旋回体7を旋回自在に装備して構成されている。前記上部旋回体7の機体フレーム8には基台9が立設され、該基台9の左右上端部に左右一対の上下平行リンク10、11の基端部が支軸10a、11aを介して揺動自在に軸支されている。一方、上下平行リンク10、11の先端部は、運転席を内装するキャブ12取り付け用の台座13の左右に支軸10b、11bを介して揺動自在に支持されている。そして本実施の形態では、機体フレーム8と左右上リンク10の中間部同志を連結補強する補強体10cの左右方向中間部(中央部)とのあいだに油圧シリンダ14が介装され、該油圧シリンダ14の伸縮作動に連動してキャブ12を機体フレーム8に支持される最下端位置から油圧シリンダ14のストロークエンド直前でのストッパ位置である最上端位置までの昇降ができるようになっている。   Next, embodiments of the present invention will be described with reference to the drawings. In the figure, reference numeral 1 denotes a traveling machine body of a hydraulic excavator. The traveling machine body 1 includes an upper swing body including a crawler-type lower traveling body 2 and a front attachment 6 including a bucket 3, an arm 4, and a boom 5. 7 is configured to be turnable. A base 9 is erected on the body frame 8 of the upper swing body 7, and a base end portion of a pair of left and right upper and lower parallel links 10, 11 is attached to left and right upper ends of the base 9 via support shafts 10a, 11a. It is pivotally supported. On the other hand, the front end portions of the upper and lower parallel links 10 and 11 are swingably supported on the left and right of a pedestal 13 for mounting the cab 12 that houses the driver's seat via the support shafts 10b and 11b. In the present embodiment, a hydraulic cylinder 14 is interposed between the body frame 8 and the intermediate portion (central portion) in the left-right direction of the reinforcing body 10c that connects and reinforces the intermediate portions of the left and right upper links 10. The cab 12 can be moved up and down from the lowermost position where the cab 12 is supported by the body frame 8 to the uppermost position which is a stopper position just before the stroke end of the hydraulic cylinder 14 in conjunction with the telescopic operation of the hydraulic cylinder 14.

前記左右一対の下平行リンク11には、キャブ12を最上端位置まで上昇した場合に、側面視において補強体10cの油圧シリンダ14取付け位置に対向する位置に位置してストッパ部材15が上方に向けて突設されている一方、上平行リンク10には、前記キャブ12が最上端位置に位置したとき前記ストッパ部材15に当接する上ストッパ受け16が突設されている。そしてキャブ12を最上端位置まで上昇した場合に、下側のストッパ部材15が上側のストッパ受け16に当接し、これによってキャブ12の支持をするようになっている。   When the cab 12 is raised to the uppermost position, the pair of left and right lower parallel links 11 are located at positions facing the mounting position of the hydraulic cylinder 14 of the reinforcing body 10c in a side view, and a stopper member 15 faces upward. On the other hand, the upper parallel link 10 is provided with an upper stopper receiver 16 that abuts against the stopper member 15 when the cab 12 is located at the uppermost position. When the cab 12 is raised to the uppermost end position, the lower stopper member 15 comes into contact with the upper stopper receiver 16, thereby supporting the cab 12.

さらに本実施の形態では、上平行リンク10には、キャブを最下端位置に下降した場合に、ストッパ部材15に対応する位置に位置して下ストッパ受け17が突設されていて、キャブ12を最下端位置にセットした場合にストッパ部材15と下ストッパ受け17とが当接してキャブ12の支持をするようになっている。   Further, in the present embodiment, when the cab is lowered to the lowermost position, the upper parallel link 10 is provided with a lower stopper receiver 17 that is located at a position corresponding to the stopper member 15 so that the cab 12 is attached to the upper parallel link 10. When set at the lowermost position, the stopper member 15 and the lower stopper receiver 17 come into contact with each other to support the cab 12.

叙述の如く構成された本発明の実施の形態において、上下平行リンク10、11に支持されたキャブ12は、油圧シリンダ14の伸縮によって昇降することになるが、油圧シリンダ14がストロークエンド直前でのストッパ位置まで伸長することでキャブ12が最上端位置まで上昇した場合に、ストッパ部材15と上ストッパ受け16とが互いに当接することになってキャブ12の支持ができ、この結果、片持ち姿勢のキャブ12の姿勢が安定化し、機体振動が増幅されて大きく振動してしまうようなことを回避でき、安定した高位置運転ができることになる。しかもこの安定支持を、本実施の形態ではキャブ12を最下端に位置させたときにも達成できることになる。   In the embodiment of the present invention configured as described above, the cab 12 supported by the upper and lower parallel links 10 and 11 moves up and down by the expansion and contraction of the hydraulic cylinder 14, but the hydraulic cylinder 14 is moved immediately before the stroke end. When the cab 12 is raised to the uppermost position by extending to the stopper position, the stopper member 15 and the upper stopper receiver 16 come into contact with each other, and the cab 12 can be supported. The posture of the cab 12 is stabilized, and it can be avoided that the body vibration is amplified and greatly vibrated, so that stable high-position operation can be performed. Moreover, this stable support can be achieved even when the cab 12 is positioned at the lowest end in the present embodiment.

そしてこのものでは、キャブ12が最上端位置に位置している場合の前記当接支持が、側面視において油圧シリンダ14が連結される位置であるため、より安定した支持ができることになる。
しかもこのものでは油圧シリンダ14を伸縮して上下リンク10、11を平行リンク移動している過程では、上下リンク10、11の対向間隔が、キャブ12を最上下端位置に位置させている状態よりも広くなるとともに、ストッパ部材15と上下ストッパ受け16、17とが位置ズレすることになるため、これらか互いに干渉しあってキャブ12の昇降を妨げるようなことがない。
In this case, the abutting support when the cab 12 is located at the uppermost end position is a position where the hydraulic cylinder 14 is connected in a side view, and thus more stable support can be achieved.
In addition, in this process, in the process in which the hydraulic cylinder 14 is expanded and contracted and the vertical links 10 and 11 are moved in parallel links, the interval between the vertical links 10 and 11 is larger than the state in which the cab 12 is positioned at the uppermost lower end position. Since the stopper member 15 and the upper and lower stopper receivers 16 and 17 are misaligned with each other, they do not interfere with each other and prevent the cab 12 from moving up and down.

因みに、ストッパ部材とストッパ受けとの少なくとも一方をゴム質弾性材で形成して弾性支持ができるようにすることもできるが、両者を金属や硬質樹脂等の硬質材で形成しても勿論よい。また、ストッパ部材とストッパ受けとの当接を凹凸嵌合方式にして支持力を高めるようにしてもよい。さらに本発明を実施するにあたり、図5(A)の第二の実施の形態に示すようにストッパ部材18と上ストッパ受け19とを左右のリンク10、11間に亘る左右幅広のものとして、より安定した当接支持ができるようにしてもよく、この場合に、同図(B)に示すように凹凸嵌合をする構成にした場合には、安定した当接支持ができることになる。また4節リンク機構としては、平行リンク機構に限定されず、前記特許文献1に示す十文字状をした4節リンクを採用することもできる。   Incidentally, at least one of the stopper member and the stopper receiver may be formed of a rubber elastic material so as to be elastically supported, but both of them may be formed of a hard material such as metal or hard resin. Further, the contact force between the stopper member and the stopper receiver may be an uneven fitting method to increase the support force. Further, in carrying out the present invention, as shown in the second embodiment of FIG. 5 (A), the stopper member 18 and the upper stopper receiver 19 are made wider so as to extend between the left and right links 10 and 11. Stable contact and support may be possible. In this case, when the concave and convex fitting is performed as shown in FIG. 5B, stable contact and support can be performed. Further, the four-node link mechanism is not limited to the parallel link mechanism, and a four-node link having a cross shape shown in Patent Document 1 may be employed.

油圧ショベルの全体側面図である。1 is an overall side view of a hydraulic excavator. 上リンクの底面図である。It is a bottom view of an upper link. キャブを最上端位置に移動した場合を説明する要部側面図である。It is a principal part side view explaining the case where a cab is moved to the uppermost end position. キャブを最下端位置に移動した場合を説明する要部側面図である。It is a principal part side view explaining the case where a cab is moved to the lowest end position. (A)は第二の実施の形態のストッパ部材と上ストッパ受けとの当接関係を示す要部平面図、(B)はさらにその変形例を示す要部平面図である。(A) is a principal part top view which shows the contact relationship of the stopper member of 2nd Embodiment, and an upper stopper receptacle, (B) is a principal part top view which shows the modification further.

符号の説明Explanation of symbols

8 機体フレーム
9 基台
10 上平行リンク
11 下平行リンク
12 キャブ
14 油圧シリンダ
15 ストッパ部材
16 上ストッパ受け
17 下ストッパ受け
8 Airframe frame 9 Base 10 Upper parallel link 11 Lower parallel link 12 Cab 14 Hydraulic cylinder 15 Stopper member 16 Upper stopper receiver 17 Lower stopper receiver

Claims (3)

機体フレームに4節リンク機構を介してキャブを昇降自在にし、油圧シリンダの伸縮作動でキャブの昇降をするように構成してなる作業用走行車において、前記4節リンク機構に、キャブを最上端に上昇させた場合に互いに当接してキャブの支持をするストッパ部材とストッパ受けとを設けたことを特徴とする作業用走行車。   In a working vehicle configured such that a cab can be moved up and down on a fuselage frame via a four-bar linkage mechanism, and the cab is raised and lowered by an expansion and contraction operation of a hydraulic cylinder. A working vehicle characterized in that it is provided with a stopper member and a stopper receiver that abut against each other and support the cab when they are raised. 4節リンク機構は平行リンク機構であり、キャブを最上端に上昇させた場合にストッパ部材に当接する上ストッパ受けの他に、キャブを最下端に下降させた場合にストッパ部材に当接する下ストッパ受けが設けられていることを特徴とする請求項1記載の作業用走行車。   The four-bar link mechanism is a parallel link mechanism, and in addition to the upper stopper receiver that contacts the stopper member when the cab is raised to the uppermost end, the lower stopper that contacts the stopper member when the cab is lowered to the lowermost end. The work traveling vehicle according to claim 1, further comprising a support. キャブを最上端位置に上昇したときのストッパ部材と上ストッパ受けとの当接位置は、側面視で油圧シリンダの平行リンク機構取り付け部位であることを特徴とする請求項2記載の作業用走行車。   3. The working vehicle according to claim 2, wherein the contact position between the stopper member and the upper stopper receiver when the cab is raised to the uppermost end position is a portion where the hydraulic cylinder parallel link mechanism is attached in a side view. .
JP2006215453A 2006-08-08 2006-08-08 Working traveling vehicle Withdrawn JP2008038502A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006215453A JP2008038502A (en) 2006-08-08 2006-08-08 Working traveling vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006215453A JP2008038502A (en) 2006-08-08 2006-08-08 Working traveling vehicle

Publications (1)

Publication Number Publication Date
JP2008038502A true JP2008038502A (en) 2008-02-21

Family

ID=39173853

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2006215453A Withdrawn JP2008038502A (en) 2006-08-08 2006-08-08 Working traveling vehicle

Country Status (1)

Country Link
JP (1) JP2008038502A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102168436A (en) * 2011-03-09 2011-08-31 湖南瑞龙重工科技有限公司 Carry scraper
EP2671783A3 (en) * 2012-06-08 2014-07-09 Cargotec Finland Oy Cabin arrangement for a crane
US9238902B2 (en) 2011-04-14 2016-01-19 Vermeer Manufacturing Company Cab suspension system for a machine adapted to surface excavate rock or like materials
CN115259024A (en) * 2022-07-20 2022-11-01 诺力智能装备股份有限公司 Frame structure and carrier applying same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102168436A (en) * 2011-03-09 2011-08-31 湖南瑞龙重工科技有限公司 Carry scraper
US9238902B2 (en) 2011-04-14 2016-01-19 Vermeer Manufacturing Company Cab suspension system for a machine adapted to surface excavate rock or like materials
EP2671783A3 (en) * 2012-06-08 2014-07-09 Cargotec Finland Oy Cabin arrangement for a crane
CN115259024A (en) * 2022-07-20 2022-11-01 诺力智能装备股份有限公司 Frame structure and carrier applying same

Similar Documents

Publication Publication Date Title
JP5122786B2 (en) Counterweight attachment / detachment device
JP4741298B2 (en) Counterweight device for construction machinery
JP2005330765A (en) Loading device
US8684198B2 (en) Working machine
JP2006055928A (en) Bracket for mounting breaker
US20130093213A1 (en) Upper slewing body and operating machine having the same
JP2008038502A (en) Working traveling vehicle
JP4690012B2 (en) Ripper equipment
KR101108599B1 (en) Cab support
JP2014129161A (en) Counterweight device of construction machine and construction machine
JP2011079432A (en) Truck frame structure of construction machine
JP2010116690A (en) Device for lifting and lowering cab of working machine
JP2008291541A (en) Construction machine
CN216787251U (en) Working device of skid-steer loader and skid-steer loader
JP4486645B2 (en) Split boom arm
JP4033386B2 (en) Handrail structure in construction machinery
JP6331836B2 (en) Construction machinery
JP5575038B2 (en) Backhoe stabilizer
JP4214125B2 (en) Stabilizer
JP4740989B2 (en) Dozer equipment
JP5474735B2 (en) Working machine
JP4991993B2 (en) Plow support device
JP7330837B2 (en) Excavator
JP2013199751A (en) Front loader
JP4564725B2 (en) Bulldozer blade

Legal Events

Date Code Title Description
A300 Withdrawal of application because of no request for examination

Free format text: JAPANESE INTERMEDIATE CODE: A300

Effective date: 20091110