JP2006037604A - Working machine - Google Patents

Working machine Download PDF

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Publication number
JP2006037604A
JP2006037604A JP2004221622A JP2004221622A JP2006037604A JP 2006037604 A JP2006037604 A JP 2006037604A JP 2004221622 A JP2004221622 A JP 2004221622A JP 2004221622 A JP2004221622 A JP 2004221622A JP 2006037604 A JP2006037604 A JP 2006037604A
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Japan
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cab
insertion hole
pin
link
pin insertion
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JP2004221622A
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JP4511894B2 (en
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Naoshi Toda
直志 渡田
Hiroyuki Taniguchi
裕之 谷口
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Caterpillar Japan Ltd
Caterpillar Mitsubishi Ltd
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Caterpillar Mitsubishi Ltd
Shin Caterpillar Mitsubishi Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a working machine capable of facilitating maintenance work below a cab provided so as to be vertically moved relative to a machine body. <P>SOLUTION: A working device is mounted on the machine body while the cab 17 is provided to the machine body with an elevating/lowering mechanism 16 so as to be vertically moved. The elevating/lowering mechanism 16 has a parallel link 32 provided between a tower 31 erected on the machine body and the cab 17. The parallel link 32 has an upper link 43 and a lower link 44 which are rotatably pivoted so as to be kept in parallel at all times. The tower 31 is provided with a pin insertion hole 51, and the lower link 44 is formed with a pin insertion hole 53 so as to be matched with the pin insertion hole 52 of the tower 31, with the cab 17 elevated up to a maintenance position. The parallel link 32 is turned by a hydraulic cylinder 33 allowing the lock pin 55 taken out of the pin storage hole 56 of the upper link 43 into the pin insertion hole 51 of the tower 31 and the pin insertion hole 53 of the lower link both positioned. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、機体に対し昇降可能なキャブを備えた作業機械に関するものである。   The present invention relates to a work machine including a cab that can be raised and lowered with respect to a machine body.

必要に応じて高いアイポイントを得るために、車両本体に対しキャブリフトシリンダを含む昇降機構によりキャブを昇降可能に設けたものがある（例えば、特許文献１参照）。   In order to obtain a high eye point as required, there is one in which a cab can be raised and lowered by a lifting mechanism including a cab lift cylinder with respect to a vehicle body (see, for example, Patent Document 1).

このようなキャブが昇降可能な車両では、キャブ下側のメンテナンス作業をする際は、キャブリフトシリンダに直付けされた落下防止弁によりキャブリフトシリンダの作動をロックするとともに、大型の架台をキャブの下側に設置して、この架台によりキャブの下降を係止することでキャブの確実な落下防止を図っている。
特開２００２−１７８９５６号公報（第４頁、図１） In such a vehicle in which the cab can be raised and lowered, when performing maintenance work on the lower side of the cab, the operation of the cab lift cylinder is locked by a fall prevention valve directly attached to the cab lift cylinder, and a large base is attached to the cab. It is installed on the lower side, and the cab is locked down by this gantry to prevent the cab from falling down.
Japanese Patent Laid-Open No. 2002-178756 (page 4, FIG. 1)

キャブ下側のメンテナンス作業時に大型の架台を用意することは容易でなく、作業性を低下させている。   It is not easy to prepare a large base for maintenance work under the cab, and the workability is lowered.

本発明は、このような点に鑑みなされたもので、機体に対し昇降可能に設けられたキャブの下側のメンテナンス作業を容易にできる作業機械を提供することを目的とするものである。   The present invention has been made in view of these points, and an object of the present invention is to provide a work machine that can easily perform maintenance work on the lower side of a cab provided so as to be movable up and down with respect to the airframe.

請求項１記載の発明は、機体と、機体に搭載された作業装置と、機体に対し昇降機構により昇降可能に設けられたキャブとを備え、昇降機構は、機体上に立設されピン挿入穴を有する支持部材と、支持部材とキャブとの間に常に平行に保たれるように回動自在に軸支された上リンクおよび下リンクを有する平行リンクと、平行リンクを上下方向に回動するアクチュエータと、平行リンクの上方への回動によりキャブが上昇した状態で支持部材のピン挿入穴に挿入されて平行リンクの下方への回動を係止するロックピンとを具備した作業機械であり、そして、平行リンクの上方への回動によりキャブが上昇した状態で、支持部材のピン挿入穴に挿入されたロックピンにより、平行リンクの下方への回動を係止することで、キャブの下降を機械的に係止するので、従来のようなキャブ係止用の大型の架台をセットする場合と比べて、キャブ係止作業が容易になり、キャブの下側のメンテナンス作業が容易になる。   The invention according to claim 1 includes an airframe, a working device mounted on the airframe, and a cab that is vertically movable with respect to the airframe by an elevating mechanism. The elevating mechanism is erected on the airframe and is inserted into a pin insertion hole. A support member having a link, a parallel link having an upper link and a lower link pivotally supported so as to be always kept parallel between the support member and the cab, and rotating the parallel link in the vertical direction. A work machine comprising an actuator and a lock pin inserted into the pin insertion hole of the support member to lock the downward rotation of the parallel link in a state where the cab is raised by the upward rotation of the parallel link; The cab is lowered by locking the downward rotation of the parallel link with the lock pin inserted in the pin insertion hole of the support member in a state where the cab is lifted by the upward rotation of the parallel link. The mechanical Since locking, as compared with the case of setting a large frame for the conventional cab locking like, cab locking work is facilitated, lower maintenance of the cab becomes easier.

請求項２記載の発明は、請求項１記載の作業機械における平行リンクが、キャブが上昇した状態で支持部材のピン挿入穴と位置合せされるピン挿入穴を有し、ロックピンは、位置合せされた支持部材のピン挿入穴と平行リンクのピン挿入穴とに挿入されるものであり、そして、平行リンクの上方への回動によりキャブが上昇した状態で、位置合せされた支持部材のピン挿入穴と平行リンクのピン挿入穴とにロックピンを挿入することで、両方のピン挿入穴の中で安定したロックピンが、キャブの下降を確実に係止する。   According to a second aspect of the present invention, the parallel link in the work machine according to the first aspect has a pin insertion hole aligned with the pin insertion hole of the support member in a state where the cab is raised, and the lock pin is aligned. Inserted into the pin insertion hole of the support member and the pin insertion hole of the parallel link, and the pin of the support member aligned with the cab raised by the upward rotation of the parallel link By inserting the lock pin into the insertion hole and the pin insertion hole of the parallel link, the stable lock pin in both of the pin insertion holes reliably holds the cab downward.

請求項３記載の発明は、請求項１または２記載の作業機械における平行リンクが、ロックピンを収納するピン収納穴を有するものであり、そして、平行リンクのピン収納穴にロックピンを収納することで、ロックピンの紛失を防止するとともに、平行リンクのピン収納穴から取出したロックピンによって、キャブ係止作業がさらに容易になる。   According to a third aspect of the present invention, the parallel link in the work machine according to the first or second aspect has a pin storage hole for storing the lock pin, and the lock pin is stored in the pin storage hole of the parallel link. Thus, the lock pin is prevented from being lost, and the cab locking operation is further facilitated by the lock pin taken out from the pin housing hole of the parallel link.

請求項１記載の発明によれば、平行リンクの上方への回動によりキャブが上昇した状態で、支持部材のピン挿入穴に挿入されたロックピンにより、平行リンクの下方への回動を係止することで、キャブの下降を機械的に係止するので、従来のようなキャブ係止用の大型の架台をセットする場合と比べて、キャブ係止作業を容易にでき、キャブの下側のメンテナンス作業を容易にできる。   According to the first aspect of the invention, in the state where the cab is raised by the upward rotation of the parallel link, the downward rotation of the parallel link is engaged by the lock pin inserted in the pin insertion hole of the support member. By stopping, the lowering of the cab is mechanically locked, making it easier to lock the cab than when installing a large cab-locking base as in the past. Maintenance work can be facilitated.

請求項２記載の発明によれば、平行リンクの上方への回動によりキャブが上昇した状態で、位置合せされた支持部材のピン挿入穴と平行リンクのピン挿入穴とにロックピンを挿入することで、両方のピン挿入穴の中で安定したロックピンにより、キャブの下降を確実に係止できる。   According to the second aspect of the present invention, the lock pin is inserted into the pin insertion hole of the aligned support member and the pin insertion hole of the parallel link in a state where the cab is raised by the upward rotation of the parallel link. Thus, the descent of the cab can be reliably locked by the stable lock pin in both the pin insertion holes.

請求項３記載の発明によれば、平行リンクのピン収納穴にロックピンを収納することで、ロックピンの紛失を防止できるとともに、平行リンクのピン収納穴から取出したロックピンによって、キャブ係止作業をさらに容易にできる。   According to the third aspect of the present invention, the lock pin can be prevented from being lost by storing the lock pin in the pin storage hole of the parallel link, and the cab is locked by the lock pin taken out from the pin storage hole of the parallel link. Work can be made easier.

以下、本発明を、図１乃至図３に示された一実施の形態を参照して詳細に説明する。   Hereinafter, the present invention will be described in detail with reference to an embodiment shown in FIGS.

図２は、建築物の解体作業などにより生じた廃材を運搬車に積込む作業などに適した油圧ショベル型の作業機械を示し、機体11は、履帯式の下部走行体12と、この下部走行体12に対し旋回軸受部13を介して旋回可能に設けられた上部旋回体14とを備えている。   FIG. 2 shows a hydraulic excavator type work machine suitable for loading waste materials generated by building demolition work or the like into a transport vehicle. The machine body 11 includes a crawler type lower traveling body 12 and the lower traveling body. An upper revolving body 14 is provided so as to be able to revolve with respect to the body 12 via a revolving bearing portion 13.

上部旋回体14の前部上には、作業装置15と、上部旋回体14に対し昇降機構16により昇降可能に設けられたキャブ17とが搭載され、上部旋回体14の後部上には、エンジンや油圧ポンプなどを内蔵した動力装置18、カウンタウェイト19などが搭載されている。   A working device 15 and a cab 17 that can be moved up and down by an elevating mechanism 16 with respect to the upper swing body 14 are mounted on the front part of the upper swing body 14, and an engine is mounted on the rear part of the upper swing body 14. And a power unit 18 incorporating a hydraulic pump, a counterweight 19 and the like are mounted.

作業装置15は、上部旋回体14に対しブーム21が上下方向回動自在に軸支され、このブーム21に対しアーム22が回動自在に軸支され、このアーム22に対し解体作業用アタッチメントとしてのマグネット23およびフォーク24が回動自在に軸支されている。   The work device 15 has a boom 21 pivotally supported by the upper swing body 14 so as to be pivotable in the vertical direction, and an arm 22 pivotally supported by the boom 21 so as to be attached to the arm 22 as a dismantling work attachment. The magnet 23 and the fork 24 are pivotally supported.

ブーム21は、上部旋回体14とこのブーム21との間に設けられたブームリフトシリンダ25により回動され、アーム22は、ブーム21とこのアーム22との間に設けられたアームシリンダ26により回動され、マグネット23は、アーム22とこのマグネット23との間に設けられたマグネットシリンダ27およびリンケージ28により回動され、フォーク24は、アーム22とこのフォーク24との間に設けられたフォークシリンダ29により回動される。   The boom 21 is rotated by a boom lift cylinder 25 provided between the upper swing body 14 and the boom 21, and the arm 22 is rotated by an arm cylinder 26 provided between the boom 21 and the arm 22. The magnet 23 is rotated by a magnet cylinder 27 and a linkage 28 provided between the arm 22 and the magnet 23, and the fork 24 is provided with a fork cylinder provided between the arm 22 and the fork 24. It is rotated by 29.

図１に示されるように、昇降機構16は、機体11の上部旋回体14上に立設された支持部材としてのタワー31と、キャブ17との間に平行リンク32が設けられ、この平行リンク32の下側に、この平行リンク32を上下方向に回動するアクチュエータとしての油圧シリンダ33が設けられている。   As shown in FIG. 1, the elevating mechanism 16 is provided with a parallel link 32 between a tower 31 as a support member erected on the upper swing body 14 of the airframe 11 and the cab 17. A hydraulic cylinder 33 as an actuator for rotating the parallel link 32 in the vertical direction is provided below the 32.

タワー31は、上部旋回体14に固定されるボックス構造のタワー下部34に対し、平行リンク32が接続されるタワー上部35に、キャブ17側に凹形に開口したブラケット構造が一体形成されている。一方、キャブ17の下部には、Ｌ形のリンク接続部材36が一体に設けられている。   The tower 31 is integrally formed with a bracket structure opened in a concave shape on the cab 17 side, on a tower upper part 35 to which a parallel link 32 is connected, with respect to a tower lower part 34 of a box structure fixed to the upper swing body 14. . On the other hand, an L-shaped link connecting member 36 is integrally provided at the lower portion of the cab 17.

平行リンク32は、タワー上部35のブラケット構造部に設けられた上下のボス部41に嵌着された上下の各ピン42により、上リンク43および下リンク44の各一端部がそれぞれ回動自在に軸支され、また、これらの上リンク43および下リンク44の各他端部が、キャブ17側のリンク接続部材36の垂直部45に設けられた上下のボス部46に、上リンク43および下リンク44が常に平行に保たれるように上下の各ピン47により回動自在に連結されている。   The parallel link 32 has upper and lower pins 42 fitted to upper and lower boss portions 41 provided in a bracket structure portion of the tower upper portion 35 so that each end portion of the upper link 43 and the lower link 44 can be rotated. The other ends of the upper link 43 and the lower link 44 are supported by the upper and lower boss portions 46 provided on the vertical portion 45 of the link connecting member 36 on the cab 17 side. The links 44 are rotatably connected by upper and lower pins 47 so that the links 44 are always kept parallel.

タワー31は、タワー上部35のブラケット構造部の下部にピン挿入穴51を持つボス部52を有し、また、図１（ａ）に示されるように、平行リンク32の下リンク44は、キャブ17が図１（ｂ）に示されるメンテンス位置まで上昇した状態でタワー31のピン挿入穴51と位置合せされるピン挿入穴53を持つボス部54を有する。   The tower 31 has a boss part 52 having a pin insertion hole 51 at the lower part of the bracket structure part of the tower upper part 35, and, as shown in FIG. 1A, the lower link 44 of the parallel link 32 has a cab. 17 has a boss portion 54 having a pin insertion hole 53 that is aligned with the pin insertion hole 51 of the tower 31 in a state where it is raised to the maintenance position shown in FIG.

さらに、この位置合せされたタワー31のピン挿入穴51と平行リンク32の下リンク44のピン挿入穴53とに挿入されるロックピン55が、図１（ａ）に示されるように平行リンク32の上リンク43に設けられたピン収納穴56を持つボス部57内に収納されている。   Further, the lock pin 55 inserted into the pin insertion hole 51 of the aligned tower 31 and the pin insertion hole 53 of the lower link 44 of the parallel link 32 is connected to the parallel link 32 as shown in FIG. The upper link 43 is housed in a boss portion 57 having a pin housing hole 56.

図３に示されるように、油圧シリンダ33のピストンロッド61の先端部は、上リンク43の下面ブラケット62にピン63により回動自在に連結されている。この油圧シリンダ33の下端ヘッド部（図示せず）は、タワー下部34または上部旋回体14にピンにより回動自在に軸支されている。また、図１（ｂ）に示されるように、油圧シリンダ33のピストンロッド61は、下リンク44に設けられたロッド挿通穴64を通して、上リンク43に接続されている。   As shown in FIG. 3, the tip of the piston rod 61 of the hydraulic cylinder 33 is rotatably connected to the lower surface bracket 62 of the upper link 43 by a pin 63. A lower end head portion (not shown) of the hydraulic cylinder 33 is pivotally supported by the tower lower portion 34 or the upper swing body 14 so as to be rotatable by a pin. Further, as shown in FIG. 1B, the piston rod 61 of the hydraulic cylinder 33 is connected to the upper link 43 through a rod insertion hole 64 provided in the lower link 44.

次に、この実施の形態の作用効果を説明する。   Next, the function and effect of this embodiment will be described.

キャブ17の下側をメンテナンス作業で開放する必要があるときは、キャブ17内のオペレータがキャブ17の昇降を操作するとともに、外部の作業者がロックピン55の着脱を操作して、以下のような手順で作業を進める。   When it is necessary to open the lower side of the cab 17 for maintenance work, the operator inside the cab 17 operates the cab 17 to move up and down, and an external operator operates the attachment / detachment of the lock pin 55 as follows. Proceed with simple steps.

図１（ａ）に示される上リンク43のピン収納穴56からロックピン55を引抜き、油圧シリンダ33のピストンロッド61を伸長させて、平行リンク32を上方へ回動することでキャブ17を上昇させ、図１（ｂ）に示されるタワー上部35のピン挿入穴51と下リンク44のピン挿入穴53とが位置合せされた位置でキャブ17の上昇を停止させ、これらの位置合せされたピン挿入穴51，53に、ピン収納穴56から引抜いたロックピン55を挿入して、平行リンク32の下方への回動を係止して機械的に固定することで、キャブ17の落下を確実に防止する。このとき、油圧シリンダ33も直付けされた落下防止弁（図示せず）によりロックされている。   The lock pin 55 is pulled out from the pin housing hole 56 of the upper link 43 shown in FIG. 1A, the piston rod 61 of the hydraulic cylinder 33 is extended, and the parallel link 32 is rotated upward to raise the cab 17. 1b to stop the cab 17 from rising at the position where the pin insertion hole 51 of the tower upper portion 35 and the pin insertion hole 53 of the lower link 44 shown in FIG. 1B are aligned. The lock pin 55 pulled out from the pin storage hole 56 is inserted into the insertion holes 51 and 53, and the downward rotation of the parallel link 32 is locked and mechanically fixed, so that the cab 17 is surely dropped. To prevent. At this time, the hydraulic cylinder 33 is also locked by a directly attached fall prevention valve (not shown).

メンテナンス作業が終了したら、ロックピン55をピン挿入穴51，53から引抜き、上リンク43のピン収納穴56に戻しておく。なお、図１（ｂ）に示されたキャブ17の高さ位置は、上昇途中の位置であり、作業装置15により解体作業などをするときは、油圧シリンダ33をさらに伸長させて、キャブ17をより高い位置に上昇させる。   When the maintenance work is completed, the lock pin 55 is pulled out from the pin insertion holes 51 and 53 and returned to the pin storage hole 56 of the upper link 43. The height position of the cab 17 shown in FIG. 1 (b) is a position in the middle of ascending. When dismantling work or the like is performed by the work device 15, the hydraulic cylinder 33 is further extended so that the cab 17 is Raise to a higher position.

このように、機体11に対し昇降可能に設けられたキャブ17が上昇した状態で、位置合せされたタワー31のピン挿入穴51と平行リンク32のピン挿入穴53とにロックピン55を挿入することで、両方のピン挿入穴51，53の中で安定したロックピン55により、キャブ17の下降を機械的に確実に係止するので、従来のようなキャブ係止用の大型の架台をセットする場合と比べて、キャブ係止作業を容易にでき、キャブ17の下側のメンテナンス作業を容易にできる。   In this way, the lock pin 55 is inserted into the pin insertion hole 51 of the aligned tower 31 and the pin insertion hole 53 of the parallel link 32 in a state where the cab 17 provided so as to be movable up and down with respect to the airframe 11 is raised. Therefore, the stable lock pin 55 in both the pin insertion holes 51 and 53 mechanically securely locks the lowering of the cab 17, so a large cradle for locking the cab as in the past is set. Compared with the case where the cab is engaged, the cab locking operation can be facilitated, and the maintenance work on the lower side of the cab 17 can be facilitated.

また、平行リンク32のピン収納穴56にロックピン55を収納することで、ロックピン55の紛失を防止できるとともに、平行リンク32のピン収納穴56から取出したロックピン55を、位置合せされたタワー31のピン挿入穴51と平行リンク32のピン挿入穴53とに挿入することで、キャブ係止作業をさらに容易にできる。   Further, by storing the lock pin 55 in the pin storage hole 56 of the parallel link 32, the lock pin 55 can be prevented from being lost, and the lock pin 55 taken out from the pin storage hole 56 of the parallel link 32 is aligned. By inserting the pin 31 into the pin insertion hole 51 of the tower 31 and the pin insertion hole 53 of the parallel link 32, the cab locking operation can be further facilitated.

なお、上記実施の形態では、タワー31と平行リンク32とにロックピン55のピン挿入穴51，53を１つずつ設けたが、タワー31および平行リンク32の一方および両方に複数のピン挿入穴を設けるようにしても良く、この場合は、キャブ17の落下防止ロック位置を複数設定できる。   In the above embodiment, one pin insertion hole 51, 53 of the lock pin 55 is provided in the tower 31 and the parallel link 32, but a plurality of pin insertion holes are provided in one or both of the tower 31 and the parallel link 32. In this case, a plurality of fall prevention lock positions of the cab 17 can be set.

また、上記実施の形態では、タワー31にピン挿入穴51を持つボス部52を設けるとともに、平行リンク32の下リンク44にも、タワー31のピン挿入穴51と位置合せされるピン挿入穴53を持つボス部54を設けたが、下リンク44のピン挿入穴53およびボス部54は、他のものに替えることができる。   Further, in the above embodiment, the boss portion 52 having the pin insertion hole 51 is provided in the tower 31, and the pin insertion hole 53 aligned with the pin insertion hole 51 of the tower 31 is also provided in the lower link 44 of the parallel link 32. However, the pin insertion hole 53 and the boss portion 54 of the lower link 44 can be replaced with other ones.

例えば、下リンク44の下面に凹溝または被係止部を設け、平行リンク32の上方への回動によりこれらの凹溝または被係止部をいったんタワー31のピン挿入穴51より上方へ移動させた後に、タワー31のピン挿入穴51にロックピン55を挿入することで、このロックピン55により、下リンク44の下面の凹溝または被係止部を係止して、平行リンク32の下方への回動を係止し、キャブ17の落下を防止することができ、この場合は、２つのピン挿入穴51，53を位置合せする必要がないので、以下に説明する１人作業や自動化が容易になる。   For example, concave grooves or locked portions are provided on the lower surface of the lower link 44, and these concave grooves or locked portions are once moved upward from the pin insertion holes 51 of the tower 31 by turning the parallel links 32 upward. After that, by inserting the lock pin 55 into the pin insertion hole 51 of the tower 31, the lock pin 55 locks the concave groove or the locked portion on the lower surface of the lower link 44, and the parallel link 32 The downward rotation can be locked and the cab 17 can be prevented from falling. In this case, it is not necessary to align the two pin insertion holes 51 and 53. Automation becomes easy.

すなわち、上記実施の形態では、キャブ17内のオペレータと外部の作業者とが連携して作業を進めるようにしているが、油圧シリンダ33をキャブ17の外部でも操作できるように油圧回路を改良すれば、１人でキャブ17の落下防止ロック作業をすることも可能である。   That is, in the above embodiment, the operator in the cab 17 and the external worker work in cooperation with each other, but the hydraulic circuit can be improved so that the hydraulic cylinder 33 can be operated outside the cab 17 as well. For example, it is possible to perform the fall prevention lock work of the cab 17 by one person.

さらに、タワー31のピン挿入穴51にスプリング、ソレノイドまたは流体圧シリンダなどにより進退自在に設けられたロックピン55を、下リンク44がピン挿入穴51より上方へ回動された状態をセンサなどで検出して、下リンク44の下方へ突出させることで、キャブ17の落下防止ロック作業を自動化することも可能である。   Furthermore, the lock pin 55 provided in the pin insertion hole 51 of the tower 31 by a spring, solenoid, or fluid pressure cylinder can be moved forward and backward, and the state in which the lower link 44 is rotated upward from the pin insertion hole 51 by a sensor or the like. It is also possible to automate the fall prevention lock operation of the cab 17 by detecting and projecting the lower link 44 downward.

本発明は、油圧ショベル型の作業機械に限定されるものではなく、ローダ型の作業機械、クレーン車型の作業機械などにも適用できる。   The present invention is not limited to a hydraulic excavator type work machine, but can also be applied to a loader type work machine, a crane vehicle type work machine, and the like.

本発明の作業機械のキャブおよびその昇降機構の一実施の形態を示す斜視図であり、（ａ）はキャブ下降状態、（ｂ）はメンテナンス時のキャブ上昇状態を示す。It is a perspective view which shows one Embodiment of the cab of the working machine of this invention, and its raising / lowering mechanism, (a) is a cab fall state, (b) shows the cab rise state at the time of a maintenance. 同上作業機械の側面図である。It is a side view of a working machine same as the above. 同上作業機械における昇降機構のシリンダ接続部を示す斜視図である。It is a perspective view which shows the cylinder connection part of the raising / lowering mechanism in a working machine same as the above.

符号の説明Explanation of symbols

11 機体
15 作業装置
16 昇降機構
17 キャブ
31 支持部材としてのタワー
32 平行リンク
33 アクチュエータとしての油圧シリンダ
43 上リンク
44 下リンク
51 ピン挿入穴
53 ピン挿入穴
55 ロックピン
56 ピン収納穴 11 Airframe
15 Work equipment
16 Lifting mechanism
17 cab
31 Tower as support member
32 Parallel links
33 Hydraulic cylinder as actuator
43 Up link
44 Down link
51 Pin insertion hole
53 Pin insertion hole
55 Lock pin
56 Pin storage hole

Claims (3)

機体と、
機体に搭載された作業装置と、
機体に対し昇降機構により昇降可能に設けられたキャブとを備え、
昇降機構は、
機体上に立設されピン挿入穴を有する支持部材と、
支持部材とキャブとの間に常に平行に保たれるように回動自在に軸支された上リンクおよび下リンクを有する平行リンクと、
平行リンクを上下方向に回動するアクチュエータと、
平行リンクの上方への回動によりキャブが上昇した状態で支持部材のピン挿入穴に挿入されて平行リンクの下方への回動を係止するロックピンと
を具備したことを特徴とする作業機械。 The aircraft,
Working equipment mounted on the aircraft,
A cab that can be moved up and down by a lifting mechanism with respect to the aircraft,
The lifting mechanism is
A support member standing on the machine body and having a pin insertion hole;
A parallel link having an upper link and a lower link pivotally supported so as to be always kept parallel between the support member and the cab;
An actuator that rotates the parallel link in the vertical direction;
A work machine comprising: a lock pin that is inserted into a pin insertion hole of a support member in a state in which the cab is raised by the upward rotation of the parallel link, and locks the downward rotation of the parallel link. 平行リンクは、キャブが上昇した状態で支持部材のピン挿入穴と位置合せされるピン挿入穴を有し、
ロックピンは、位置合せされた支持部材のピン挿入穴と平行リンクのピン挿入穴とに挿入される
ことを特徴とする請求項１記載の作業機械。 The parallel link has a pin insertion hole that is aligned with the pin insertion hole of the support member with the cab raised,
The work machine according to claim 1, wherein the lock pin is inserted into the pin insertion hole of the aligned support member and the pin insertion hole of the parallel link. 平行リンクは、
ロックピンを収納するピン収納穴を有する
ことを特徴とする請求項１または２記載の作業機械。 Parallel links
The work machine according to claim 1, further comprising a pin storage hole for storing a lock pin.
JP2004221622A 2004-07-29 2004-07-29 Work machine Active JP4511894B2 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007106563A (en) * 2005-10-14 2007-04-26 Shin Caterpillar Mitsubishi Ltd Working machine
JP2015101870A (en) * 2013-11-22 2015-06-04 住友建機株式会社 Work machine
JP5925944B1 (en) * 2015-07-17 2016-05-25 株式会社タダノ Crane hook and crane truck

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102583159B (en) * 2012-02-16 2013-10-02 中国人民解放军总后勤部建筑工程研究所 Bi-directional moving cross-country container reach stacker cab device

Citations (2)

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Publication number Priority date Publication date Assignee Title
JPS61197078U (en) * 1985-05-30 1986-12-09
JPH0937611A (en) * 1995-08-01 1997-02-10 Kubota Corp Rice transplanter equipped with fertilizer-applying device

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Publication number Priority date Publication date Assignee Title
JPS61197078U (en) * 1985-05-30 1986-12-09
JPH0937611A (en) * 1995-08-01 1997-02-10 Kubota Corp Rice transplanter equipped with fertilizer-applying device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007106563A (en) * 2005-10-14 2007-04-26 Shin Caterpillar Mitsubishi Ltd Working machine
JP4545078B2 (en) * 2005-10-14 2010-09-15 キャタピラージャパン株式会社 Work machine
JP2015101870A (en) * 2013-11-22 2015-06-04 住友建機株式会社 Work machine
JP5925944B1 (en) * 2015-07-17 2016-05-25 株式会社タダノ Crane hook and crane truck
US9561939B1 (en) 2015-07-17 2017-02-07 Tadano Ltd. Crane hook and crane truck

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