JP2010001705A - Working arm operation device of demolition machine - Google Patents

Working arm operation device of demolition machine Download PDF

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JP2010001705A
JP2010001705A JP2008163416A JP2008163416A JP2010001705A JP 2010001705 A JP2010001705 A JP 2010001705A JP 2008163416 A JP2008163416 A JP 2008163416A JP 2008163416 A JP2008163416 A JP 2008163416A JP 2010001705 A JP2010001705 A JP 2010001705A
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arm
work
hydraulic actuator
operated
pair
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Yoshihiro Okamoto
吉弘 岡本
Shogo Fukusato
昇吾 福里
Takashi Tsutsumi
隆治 堤
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Caterpillar Japan Ltd
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Caterpillar Japan Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To operate at least three actuators by two operating pedals which are installed in a restricted space around the operator's seat of a demolition machine. <P>SOLUTION: This working arm operation device 20 includes the pair of operating pedals 22, 24 installed on the floor 8a of the operator's seat 8 of the demolition machine 2 and a selector means 26 for changing over one 22 of the pair of operating pedals to one for operating the hydraulic actuator 18c of a working device 18 attached to a multi-joint working arm 10 or one for operating the hydraulic actuator 13 of the arm member 12 of the working arm 10. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、長尺の作業腕を備えた解体作業機、特に小型の解体作業機に好適な、作業腕操作装置に関する。   The present invention relates to a dismantling work machine having a long work arm, and particularly to a work arm operating device suitable for a small dismantling work machine.

作業腕の先端にバケットを備えた作業機として周知の油圧ショベルがある。この油圧ショベルを基本にして、家屋、ビル、建造物などの解体作業を行なう作業機として解体作業機が開発されている（例えば、特許文献１参照）。解体作業機は、作業腕の先端に解体物をつかむ開閉自在な爪を備えた把持装置を備え、さらに作業腕に屈曲自在なブームを追加し、かつ先端の把持装置を所望の部位に位置付けできるように把持装置に回転装置を備えている。   There is a known hydraulic excavator as a working machine having a bucket at the tip of a working arm. On the basis of this hydraulic excavator, a dismantling work machine has been developed as a working machine for performing a dismantling work such as a house, a building, and a building (for example, see Patent Document 1). The demolition work machine includes a gripping device having an openable / closable claw for grasping a dismantled object at the tip of the work arm, further adding a bendable boom to the work arm, and positioning the tip gripping device at a desired site. Thus, the gripping device is provided with a rotating device.

この解体作業機には、追加ブームの屈曲、把持装置の開閉および回転を行うアクチュエータの作動を操作するために、基本となる油圧ショベルの操作装置に対して、少なくともこの３個のアクチュエータの操作装置の追加が必要であり、運転席の床の走行装置用の一対の操作ペダルの近傍に操作ペダルが３個（例えば、特許文献２参照）追加されている。
特開２００３−１９３６８７号公報（図１） 特開平７−２９２７２６号公報（図２） In this dismantling work machine, in order to operate the actuator for performing the bending of the additional boom, opening and closing and rotation of the gripping device, the operation device of at least these three actuators with respect to the operation device of the basic hydraulic excavator In addition, three operation pedals are added in the vicinity of the pair of operation pedals for the traveling device on the floor of the driver's seat (see, for example, Patent Document 2).
JP2003-193687A (FIG. 1) JP-A-7-292726 (FIG. 2)

しかしながら上述したとおりの形態の従来の解体作業機の作業腕操作装置には、次のとおりの解決すべき課題がある。   However, the conventional work arm operating device for a dismantling work machine having the above-described configuration has the following problems to be solved.

すなわち、ミニＨＥと呼ばれる小型油圧ショベルを基本にした解体作業機においては、機体が小さく運転席の周りの空間が狭いので、解体作業機用として設置できる操作ペダルの数は２個に制限され、要求される３個以上の設置が難しい。   That is, in the dismantling work machine based on a small hydraulic excavator called mini-HE, since the airframe is small and the space around the driver's seat is narrow, the number of operation pedals that can be installed for the dismantling work machine is limited to two, Three or more required installations are difficult.

本発明は上記事実に鑑みてなされたもので、その技術的課題は、解体作業機の運転席周りの限られた空間に２個の操作ペダルを設置し、この２個の操作ペダルによって少なくとも３個のアクチュエータを操作することができるようにした、解体作業機の作業腕操作装置を提供することである。   The present invention has been made in view of the above-mentioned facts, and the technical problem thereof is that two operation pedals are installed in a limited space around the driver's seat of the dismantling work machine, and at least 3 by the two operation pedals. An object of the present invention is to provide a work arm operating device for a dismantling work machine that can operate a single actuator.

本発明によれば上記技術的課題を解決する解体作業機の作業腕操作装置として、解体作業機の運転席の床に設置した一対の操作ペダルと、一対の操作ペダルの一方を、多関節の作業腕に取付けられた作業具の油圧アクチュエータ操作用あるいは作業腕の腕部材の油圧アクチュエータ操作用に切換える切換手段と、を備えていることを特徴とする解体作業機の作業腕操作装置が提供される。   According to the present invention, as a work arm operation device for a dismantling work machine that solves the above technical problem, a pair of operation pedals installed on the floor of a driver's seat of the dismantling work machine, and one of the pair of operation pedals are articulated. There is provided a work arm operating device for a demolition work machine, comprising switching means for switching to a hydraulic actuator operation of a work tool attached to the work arm or a hydraulic actuator operation of an arm member of the work arm. The

好適には、切換手段は、操作ペダルによって操作される方向制御弁の油路を、作業具の油圧アクチュエータあるいは腕部材の油圧アクチュエータに切換える電磁切換弁と、この電磁切換弁を切換える、運転席の近傍に装備されている操作レバーに設置された切換スイッチと、を備えている。   Preferably, the switching means includes an electromagnetic switching valve that switches an oil passage of the direction control valve operated by the operation pedal to a hydraulic actuator of the work tool or a hydraulic actuator of the arm member, and a driver seat that switches the electromagnetic switching valve. And a change-over switch installed on an operation lever installed in the vicinity.

また、多関節の作業腕は、それぞれ油圧アクチュエータによって作動される一対の腕部材を備え、一対の腕部材の一方が、該切換手段によって作業腕の腕部材の油圧アクチュエータ操作用に切換えられた操作ペダルによって操作され、一対の腕部材の他方が、該切換スイッチが設置された操作レバーによって操作される。   The multi-joint work arm includes a pair of arm members each operated by a hydraulic actuator, and one of the pair of arm members is switched by the switching means to operate the hydraulic actuator of the arm member of the work arm. Operated by the pedal, the other of the pair of arm members is operated by an operating lever provided with the changeover switch.

本発明に従って構成された解体作業機の作業腕操作装置は、解体作業機の運転席の床に設置した一対の操作ペダルの一方を、多関節の作業腕に取付けられた作業具の油圧アクチュエータ操作用あるいは作業腕の腕部材の油圧アクチュエータ操作用に切換える切換手段を備えている。したがって、切換手段と、運転席周りの限られた空間に設置した２個の操作ペダルによって、少なくとも３個のアクチュエータを操作することができる。   A work arm operating device for a dismantling work machine configured in accordance with the present invention is configured to operate one of a pair of operation pedals installed on a floor of a driver's seat of a dismantling work machine with a hydraulic actuator for a work tool attached to a multi-jointed work arm. There is provided switching means for switching to a hydraulic actuator operation of the arm member of the working arm or the working arm. Therefore, at least three actuators can be operated by the switching means and the two operation pedals installed in a limited space around the driver's seat.

以下、本発明に従って構成された解体作業機の作業腕操作装置について、好適実施形態を図示している添付図面を参照して、さらに詳細に説明する。   Hereinafter, a working arm operation device for a dismantling machine constructed according to the present invention will be described in more detail with reference to the accompanying drawings illustrating a preferred embodiment.

図２を参照して説明する。全体を番号２で示す解体作業機は、下部走行体４と、下部走行体４上に鉛直軸線を中心に旋回自在に取付けられた上部旋回体６を備え、上部旋回体６には、運転席８および多関節の作業腕１０が備えられている。   This will be described with reference to FIG. The dismantling machine generally indicated by numeral 2 includes a lower traveling body 4 and an upper revolving body 6 that is pivotably mounted on the lower traveling body 4 about a vertical axis, and the upper revolving body 6 includes a driver seat. 8 and multi-joint working arms 10 are provided.

作業腕１０は、上部旋回体６に上下方向に揺動自在に取付けられた一対の腕部材である第１ブーム１２および第２ブーム１４と、第２ブーム１４の先端に上下方向に揺動自在に取付けられたアーム１６を備え、アーム１６の先端には上下方向に揺動自在に取付けられた作業具である把持装置１８が取付けられている。第２ブーム１４は、第１ブーム１２に上下方向に揺動自在に連結されている。   The working arm 10 is a pair of arm members that are swingably attached to the upper swing body 6 in the vertical direction, and the first boom 12 and the second boom 14 and the tip of the second boom 14 are swingable in the vertical direction. A gripping device 18, which is a work tool that is swingably mounted in the vertical direction, is attached to the tip of the arm 16. The second boom 14 is connected to the first boom 12 so as to be swingable in the vertical direction.

上部旋回体６と第１ブーム１２の間には第１ブーム作動シリンダ１３が、第１ブーム１２と第２ブーム１４の間には第２ブーム作動シリンダ１５が、第２ブーム１４とアーム１６の間にはアーム作動シリンダ１７が、アーム１６と把持装置１８の間には把持装置揺動シリンダ１９がそれぞれ備えられている。   A first boom operating cylinder 13 is provided between the upper swing body 6 and the first boom 12, a second boom operating cylinder 15 is provided between the first boom 12 and the second boom 14, and the second boom 14 and the arm 16 are connected. An arm operating cylinder 17 is provided between them, and a gripping device swinging cylinder 19 is provided between the arm 16 and the gripping device 18.

図２とともに図１、主として図１を参照して説明する。把持装置１８は、一対の爪１８ａ、１８ａを開閉させる開閉シリンダ１８ｂおよび一対の爪１８ａ、１８ａを回転させる回転モータ１８ｃを備えている。   1 will be described with reference to FIG. 1 and mainly FIG. The gripping device 18 includes an open / close cylinder 18b that opens and closes the pair of claws 18a and 18a and a rotation motor 18c that rotates the pair of claws 18a and 18a.

全体を番号２０で示す作業腕操作装置は、解体作業機２の運転席８の床８ａに設置した左右一対の操作ペダル２２，２４と、一方の左側の操作ペダル２２を、作業腕１０に取付けられた把持装置１８の油圧アクチュエータ操作用あるいは作業腕１０の腕部材の油圧アクチュエータ操作用に切換える切換手段２６を備えている。   A work arm operating device generally indicated by reference numeral 20 has a pair of left and right operating pedals 22, 24 installed on the floor 8 a of the driver's seat 8 of the dismantling work machine 2 and one left operating pedal 22 attached to the working arm 10. A switching means 26 is provided for switching to the operation of the hydraulic actuator of the gripping device 18 or the operation of the hydraulic actuator of the arm member of the work arm 10.

運転席８の床８ａの中央には、周知の走行操作用の左右１対の操作ペダル２８ａ，２８ｂが備えられている。また、運転席８の左右には、周知の一対の、ジョイスティックである操作レバー３０ａ、３０ｂが備えられている。操作ペダル２８ａ、２８ｂならびに操作レバー３０ａ、３０ｂについての詳細説明は省略するが、左側の操作レバー３０ａは、矢印Ｘ１、Ｘ２で示す前後方向に操作すると、第２ブーム作動シリンダ１５が操作され第２ブーム１４が上下方向に揺動作動される。   In the center of the floor 8a of the driver's seat 8, a pair of left and right operation pedals 28a and 28b for driving operation are provided. Further, on the left and right sides of the driver's seat 8, there are provided a pair of operation levers 30a and 30b which are well-known joysticks. Although a detailed description of the operation pedals 28a and 28b and the operation levers 30a and 30b is omitted, when the left operation lever 30a is operated in the front-rear direction indicated by arrows X1 and X2, the second boom operation cylinder 15 is operated and the second operation cylinder 30 is operated. The boom 14 is swung up and down.

右側の操作ペダル２４は、把持装置１８の爪１８ａの開閉操作用である。操作ペダル２４を矢印Ｙ１、Ｙ２で示す前後方向に操作すると、パイロット弁２４ａあるいは２４ｂが操作され、パイロット油圧源３２のパイロット油によって方向制御弁３４が操作され、作動油圧源３６の作動油が油圧アクチュエータである開閉シリンダ１８ｂに給排される。操作ペダル２４を前Ｙ１方向に操作すると、開閉シリンダ１８ｂは収縮し爪１８ａは閉じられる。逆に、操作ペダル２４を後Ｙ２方向に操作すると、開閉シリンダ１８ｂは伸長し爪１８ａは開けられる。   The right operation pedal 24 is for opening and closing the claw 18 a of the gripping device 18. When the operation pedal 24 is operated in the front-rear direction indicated by the arrows Y1, Y2, the pilot valve 24a or 24b is operated, the direction control valve 34 is operated by the pilot oil of the pilot hydraulic source 32, and the hydraulic oil of the operating hydraulic source 36 is hydraulically It is supplied to and discharged from the open / close cylinder 18b which is an actuator. When the operation pedal 24 is operated in the front Y1 direction, the open / close cylinder 18b is contracted and the claw 18a is closed. Conversely, when the operation pedal 24 is operated in the rear Y2 direction, the open / close cylinder 18b extends and the pawl 18a is opened.

切換手段２６は、左側の操作ペダル２２によって操作される方向制御弁３８の油路４０を、作業具である把持装置１８の油圧アクチュエータである回転モータ１８ｃあるいは腕部材である第１ブーム１２の油圧アクチュエータである第１ブーム作動シリンダ１３に切換える２位置の電磁切換弁４２と、この電磁切換弁４２を切換える、操作レバー３０ａの握り部３０ｃに設置されたオンオフ型の切換スイッチ４４を備えている。   The switching means 26 moves the oil passage 40 of the direction control valve 38 operated by the left operation pedal 22 to the hydraulic motor of the first boom 12 that is a rotary motor 18c that is a hydraulic actuator of the gripping device 18 that is a work tool or an arm member. A two-position electromagnetic switching valve 42 that switches to the first boom operating cylinder 13 that is an actuator, and an on / off type switching switch 44 that is installed in the grip portion 30c of the operating lever 30a that switches the electromagnetic switching valve 42 are provided.

切換スイッチ４４は、操作されないオフ状態（図１の状態）においては電源４６と電磁切換弁４２の通電を断ち、操作されたオン状態においては電磁切換弁４２に通電する。   The changeover switch 44 cuts off the power supply 46 and the electromagnetic switching valve 42 in the off state (the state of FIG. 1) that is not operated, and energizes the electromagnetic switching valve 42 in the operated on state.

電磁切換弁４２に通電されない状態（図１の状態）において操作ペダル２２によりパイロット弁２２ａあるいは２２ｂを操作すると、パイロット油圧源３２のパイロット油によって操作された方向制御弁３８の油路４０は、把持装置１８の回転モータ１８ｃに接続され、作動油圧源３６の作動油が回転モータ１８ｃに方向制御弁３８の操作に応じて給排される。   When the pilot valve 22a or 22b is operated by the operation pedal 22 in a state where the electromagnetic switching valve 42 is not energized (the state shown in FIG. 1), the oil passage 40 of the direction control valve 38 operated by the pilot oil of the pilot hydraulic source 32 is gripped. It is connected to the rotary motor 18c of the device 18, and hydraulic oil from the hydraulic pressure source 36 is supplied to and discharged from the rotary motor 18c according to the operation of the direction control valve 38.

電磁切換弁４２通電状態において操作ペダル２２によりパイロット弁２２ａあるいは２２ｂを操作すると、パイロット油圧源３２のパイロット油によって操作された方向制御弁３８の油路４０は、作業腕１０の第１ブーム作動シリンダ１３に接続され、作動油圧源３６の作動油が第１ブーム作動シリンダ１３に方向制御弁３８の操作に応じて給排される。   When the pilot valve 22a or 22b is operated by the operation pedal 22 in the energized state of the electromagnetic switching valve 42, the oil passage 40 of the direction control valve 38 operated by the pilot oil of the pilot hydraulic source 32 is connected to the first boom operating cylinder of the work arm 10. 13, hydraulic oil from the hydraulic pressure source 36 is supplied to and discharged from the first boom operating cylinder 13 according to the operation of the direction control valve 38.

操作ペダル２２を前Ｚ１方向に操作した場合には、第１ブーム作動シリンダ１３は伸長し第１ブーム１２は上方に揺動される。逆に、操作ペダル２２を後Ｚ２方向に操作した場合には、第１ブーム作動シリンダ１３は収縮され第１ブーム１２は下方に揺動される。   When the operation pedal 22 is operated in the front Z1 direction, the first boom operating cylinder 13 extends and the first boom 12 swings upward. Conversely, when the operation pedal 22 is operated in the rear Z2 direction, the first boom operating cylinder 13 is contracted and the first boom 12 is swung downward.

したがって、切換スイッチ４４をオンにして左側の操作ペダル２２を操作すると、一対の腕部材である第１ブーム１２および第２ブーム１４の一方の第１ブーム作動シリンダ１３が操作され、切換スイッチ４４をオフにして左側の操作ペダル２２を操作すると、把持装置１８の回転モータ１８ｃが操作される。   Therefore, when the changeover switch 44 is turned on and the left operation pedal 22 is operated, the first boom operation cylinder 13 of the first boom 12 and the second boom 14 as a pair of arm members is operated, and the changeover switch 44 is turned on. When the left operation pedal 22 is operated with the power off, the rotation motor 18c of the gripping device 18 is operated.

上述したとおりの解体作業機２の作業腕操作装置２０の作用効果について説明する。   The effect of the working arm operation device 20 of the dismantling work machine 2 as described above will be described.

作業腕操作装置２０は、解体作業機２の運転席８の床８ａに設置した一対の操作ペダル２２，２４の一方を、多関節の作業腕１０に取付けられた作業具１８の油圧アクチュエータである回転モータ１８ｃ操作用あるいは作業腕１０の腕部材１２の油圧アクチュエータである第１ブーム作動シリンダ１３操作用に切換える切換手段２６を備えている。したがって、切換手段２６と、運転席８周りの限られた空間に設置した２個の操作ペダル２２，２４によって、少なくとも３個のアクチュエータを操作することができる。   The work arm operation device 20 is a hydraulic actuator of the work tool 18 in which one of a pair of operation pedals 22 and 24 installed on the floor 8a of the driver's seat 8 of the dismantling work machine 2 is attached to the multi-joint work arm 10. There is provided switching means 26 for switching to the operation of the rotary motor 18c or the operation of the first boom operating cylinder 13 which is a hydraulic actuator of the arm member 12 of the work arm 10. Therefore, at least three actuators can be operated by the switching means 26 and the two operation pedals 22 and 24 installed in a limited space around the driver's seat 8.

切換手段２６は、操作ペダル２２によって操作される方向制御弁３８の油路４０を、作業具１８の油圧アクチュエータ１８ｃあるいは腕部材１２の油圧アクチュエータ１３に切換える電磁切換弁４２と、この電磁切換弁４２を切換える、運転席８の近傍に装備されている操作レバー３０ａに設置された切換スイッチ４４を備えている。したがって、簡単な構成および簡単な操作で、操作ペダル２２を、作業具１８の油圧アクチュエータ１８ｃあるいは腕部材１２の油圧アクチュエータ１３操作用に切換えることができる。   The switching means 26 includes an electromagnetic switching valve 42 that switches the oil passage 40 of the direction control valve 38 operated by the operation pedal 22 to the hydraulic actuator 18 c of the work tool 18 or the hydraulic actuator 13 of the arm member 12, and the electromagnetic switching valve 42. The selector switch 44 is provided on the operation lever 30a installed in the vicinity of the driver's seat 8. Therefore, the operation pedal 22 can be switched to the operation of the hydraulic actuator 18c of the work tool 18 or the hydraulic actuator 13 of the arm member 12 with a simple configuration and a simple operation.

また、多関節の作業腕１０は、それぞれ油圧アクチュエータ１３，１５によって作動される一対の腕部材１２，１４を備え、一対の腕部材１２，１４の一方が、切換手段２６によって作業腕１０の腕部材１２の油圧アクチュエータ１３操作用に切換えられた操作ペダル２２によって操作され、一対の腕部材１２，１４の他方１４が、切換スイッチ４４が設置された操作レバー３０ａによって操作される。したがって、切換スイッチ４４を設置した操作レバー３０ａと切換スイッチ４４で切換えた操作ペダル２２によって、一対の腕部材１２，１４を操作することができ、作業腕１０を効率よく動かすことができるので、解体作業を能率を向上させることができる。   The multi-joint work arm 10 includes a pair of arm members 12 and 14 that are operated by hydraulic actuators 13 and 15, respectively, and one of the pair of arm members 12 and 14 is an arm of the work arm 10 by the switching means 26. The operation pedal 22 is switched to operate the hydraulic actuator 13 of the member 12, and the other 14 of the pair of arm members 12 and 14 is operated by the operation lever 30 a provided with the changeover switch 44. Therefore, the pair of arm members 12 and 14 can be operated by the operation lever 30a provided with the changeover switch 44 and the operation pedal 22 changed over by the changeover switch 44, and the work arm 10 can be moved efficiently. Work efficiency can be improved.

本発明に従って構成された解体作業機の作業腕操作装置の構成説明図。The structure explanatory view of the work arm operation device of the dismantling work machine constituted according to the present invention. 典型的な解体作業機の側面図。The side view of a typical demolition work machine.

符号の説明Explanation of symbols

２：解体作業機
８：運転席
８ａ：床
１０：作業腕
１２：第１ブーム（腕部材）
１３：第１ブーム作動シリンダ（腕部材の油圧アクチュエータ）
１４：第２ブーム（腕部材）
１８：把持装置（作業具）
１８ｃ：回転モータ（作業具の油圧アクチュエータ）
２０：作業腕操作装置
２２：操作ペダル
２４：操作ペダル
２６：切換手段
３０ａ：操作レバー
３８：方向制御弁
４０：油路
４２：電磁切換弁
４４：切換スイッチ 2: Demolition work machine 8: Driver's seat 8a: Floor 10: Working arm 12: First boom (arm member)
13: First boom operating cylinder (hydraulic actuator for arm member)
14: Second boom (arm member)
18: Grasping device (work tool)
18c: Rotating motor (hydraulic actuator for work implement)
20: Working arm operation device 22: Operation pedal 24: Operation pedal 26: Switching means 30a: Operation lever 38: Direction control valve 40: Oil passage 42: Electromagnetic switching valve 44: Changeover switch

Claims (3)

解体作業機の運転席の床に設置した一対の操作ペダルと、
一対の操作ペダルの一方を、多関節の作業腕に取付けられた作業具の油圧アクチュエータ操作用あるいは作業腕の腕部材の油圧アクチュエータ操作用に切換える切換手段と、
を備えていることを特徴とする解体作業機の作業腕操作装置。 A pair of operating pedals installed on the floor of the driver's seat of the dismantling machine,
Switching means for switching one of the pair of operation pedals to operate the hydraulic actuator of the work tool attached to the articulated work arm or to operate the hydraulic actuator of the arm member of the work arm;
A work arm operating device for a dismantling work machine, comprising: 切換手段が、
操作ペダルによって操作される方向制御弁の油路を、作業具の油圧アクチュエータあるいは腕部材の油圧アクチュエータに切換える電磁切換弁と、
この電磁切換弁を切換える、運転席の近傍に装備されている操作レバーに設置された切換スイッチと、
を備えていることを特徴とする請求項１記載の解体作業機の作業腕操作装置。 The switching means is
An electromagnetic switching valve for switching the oil passage of the direction control valve operated by the operation pedal to the hydraulic actuator of the work tool or the hydraulic actuator of the arm member;
A change-over switch installed on an operation lever installed in the vicinity of the driver's seat for switching the electromagnetic switching valve,
The working arm operation device for a dismantling work machine according to claim 1, comprising: 多関節の作業腕が、それぞれ油圧アクチュエータによって作動される一対の腕部材を備え、
一対の腕部材の一方が、該切換手段によって作業腕の腕部材の油圧アクチュエータ操作用に切換えられた操作ペダルによって操作され、
一対の腕部材の他方が、該切換スイッチが設置された操作レバーによって操作される、
ことを特徴とする請求項１または２記載の解体作業機の作業腕操作装置。 A multi-joint work arm includes a pair of arm members each operated by a hydraulic actuator,
One of the pair of arm members is operated by an operation pedal that is switched by the switching means for operating the hydraulic actuator of the arm member of the work arm,
The other of the pair of arm members is operated by an operation lever provided with the changeover switch.
3. A work arm operating device for a dismantling work machine according to claim 1 or 2.
JP2008163416A 2008-06-23 2008-06-23 Working arm operation device of demolition machine Withdrawn JP2010001705A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008163416A JP2010001705A (en) 2008-06-23 2008-06-23 Working arm operation device of demolition machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008163416A JP2010001705A (en) 2008-06-23 2008-06-23 Working arm operation device of demolition machine

Publications (1)

Publication Number Publication Date
JP2010001705A true JP2010001705A (en) 2010-01-07

Family

ID=41583635

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2008163416A Withdrawn JP2010001705A (en) 2008-06-23 2008-06-23 Working arm operation device of demolition machine

Country Status (1)

Country Link
JP (1) JP2010001705A (en)

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