JP2010255248A5 - - Google Patents

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Publication number
JP2010255248A5
JP2010255248A5 JP2009105363A JP2009105363A JP2010255248A5 JP 2010255248 A5 JP2010255248 A5 JP 2010255248A5 JP 2009105363 A JP2009105363 A JP 2009105363A JP 2009105363 A JP2009105363 A JP 2009105363A JP 2010255248 A5 JP2010255248 A5 JP 2010255248A5
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Japan
Prior art keywords
pilot
valve
arm
operation valve
pilot pressure
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JP2009105363A
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Japanese (ja)
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JP2010255248A (en
JP5180900B2 (en
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Priority claimed from JP2009105363A external-priority patent/JP5180900B2/en
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Publication of JP2010255248A5 publication Critical patent/JP2010255248A5/ja
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第4発明に係るオフセットブーム式油圧ショベルの作業機制御装置は、第3発明において、オフセットブーム式油圧ショベルは左右の履帯を有しており、輸送姿勢検出手段は、作業機のアーム先端が、左右の履帯の間でかつ履帯の高さ以下の領域に侵入したときに、折り畳み姿勢であると判断する。なお、「履帯の高さ」とは、図1で示す斜線領域の高さであり、油圧ショベルに履帯が装着されたときの地面から履帯上面までの距離である。 According to a fourth aspect of the present invention, there is provided a work machine control device for an offset boom type hydraulic excavator.In the third invention, the offset boom type hydraulic excavator has left and right crawler belts. When entering the region between the left and right crawler belts and below the crawler belt height, it is determined to be in the folded posture. The “crawler belt height” is the height of the hatched area shown in FIG. 1, and is the distance from the ground surface to the upper surface of the crawler belt when the crawler belt is mounted on the excavator.

作業機4のアーム24はキャブ15内に設けられた操作レバー35によって操作され、この操作レバー35によって操作レバー用のパイロット操作弁36の出力圧(パイロット圧)が制御される。なお、パイロット操作弁36にはパイロットポンプ50からパイロット圧が供給されている。そして、アーム24のダンプ操作については、パイロット操作弁36のパイロット圧が、そのままアーム用操作弁37のダンプ側のパイロット圧として入力される。これにより、油圧ポンプ31からの圧油はアーム用操作弁37を介してアーム用シリンダ28のダンプ側の室に入力される。一方で、掘削操作については、パイロット操作弁36のパイロット圧は一旦EPC弁38に入力され、EPC弁38で調整されたパイロット圧がアーム用操作弁37の掘削側のパイロット圧として入力される。これにより、油圧ポンプ31からの圧油はアーム用操作弁37を介してアーム用シリンダ28の掘削側の室に入力される。EPC弁38は、コントローラ40から出力されるEPC制御用の電流指令によって制御される。 The arm 24 of the work implement 4 is operated by an operating lever 35 provided in the cab 15, and the output pressure (pilot pressure) of the pilot operating valve 36 for the operating lever is controlled by the operating lever 35. A pilot pressure is supplied from a pilot pump 50 to the pilot operation valve 36. For the dump operation of the arm 24, the pilot pressure of the pilot operation valve 36 is input as it is as the pilot pressure on the dump side of the arm operation valve 37. Thereby, the pressure oil from the hydraulic pump 31 is input to the dump side chamber of the arm cylinder 28 via the arm operation valve 37. On the other hand, for the excavation operation, the pilot pressure of the pilot operation valve 36 is once input to the EPC valve 38, and the pilot pressure adjusted by the EPC valve 38 is input as the pilot pressure on the excavation side of the arm operation valve 37. Thus, the pressure oil from the hydraulic pump 31 is input to the excavation side chamber of the arm cylinder 28 via the arm operation valve 37. The EPC valve 38 is controlled by a current command for EPC control output from the controller 40.

JP2009105363A 2009-04-23 2009-04-23 Working machine control device for offset boom type hydraulic excavator Active JP5180900B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009105363A JP5180900B2 (en) 2009-04-23 2009-04-23 Working machine control device for offset boom type hydraulic excavator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009105363A JP5180900B2 (en) 2009-04-23 2009-04-23 Working machine control device for offset boom type hydraulic excavator

Publications (3)

Publication Number Publication Date
JP2010255248A JP2010255248A (en) 2010-11-11
JP2010255248A5 true JP2010255248A5 (en) 2011-12-01
JP5180900B2 JP5180900B2 (en) 2013-04-10

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ID=43316454

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2009105363A Active JP5180900B2 (en) 2009-04-23 2009-04-23 Working machine control device for offset boom type hydraulic excavator

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JP (1) JP5180900B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6946090B2 (en) * 2017-07-18 2021-10-06 株式会社クボタ Work machine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2996762B2 (en) * 1991-04-16 2000-01-11 株式会社小松製作所 Work machine interference prevention circuit
JP2812892B2 (en) * 1995-04-20 1998-10-22 住友建機株式会社 Work machine interference prevention device for construction machinery
JP2009256934A (en) * 2008-04-15 2009-11-05 Caterpillar Japan Ltd Interference prevention device of utility machine

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