Title:
ショベル
Document Type and Number:
Japanese Patent JP7396838
Kind Code:
B2
Abstract:
To provide a shovel capable of producing force necessary for a work while suppressing energy loss.SOLUTION: A shovel 100 comprises an upper structure 3, a lower structure 1, an excavation attachment AT including a boom 4 and an arm 5, a hydraulic actuator, a control valve controlling a hydraulic oil flowing to the hydraulic actuator, a main pump 14, a relief valve 50, and a controller 30. The controller 30 controls a discharge amount of the main pump 14 so that a discharge pressure of the main pump 14 is maintained at a relief pressure of the relief valve 50.SELECTED DRAWING: Figure 1
Inventors:
Ryuji Shiratani
Masanori Sano
Tomoki Kurokawa
Ichi Arakaki
Masanori Sano
Tomoki Kurokawa
Ichi Arakaki
Application Number:
JP2019166125A
Publication Date:
December 12, 2023
Filing Date:
September 12, 2019
Export Citation:
Assignee:
Sumitomo Construction Machinery Co., Ltd.
International Classes:
E02F9/22; F15B11/02
Domestic Patent References:
| JP2015140727A | ||||
| JP2014222103A | ||||
| JP2012172520A | ||||
| JP2006316937A | ||||
| JP2013245787A | ||||
| JP2005265002A | ||||
| JP2002201989A |
Foreign References:
| WO2014084213A1 | ||||
| WO2010147121A1 | ||||
| WO2014073541A1 | ||||
| US20150159682 | ||||
| WO2015125683A1 | ||||
| WO2015133625A1 | ||||
| US20120227391 |
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Tadahiko Ito
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