Title:
作業機械
Document Type and Number:
Japanese Patent JP6937790
Kind Code:
B2
Abstract:
To provide a work machine that can efficiently suppress diffusion of powder dust generated in the course of crushing an object.SOLUTION: The work machine comprises a main pump, a crusher that receives supply of hydraulic oil from the main pump and crushes an object held thereby, and a first sensor that repeatedly outputs first pressure signals showing pressure of the hydraulic oil to be supplied to the crusher, the work machine further comprises a first nozzle that linearly jets water supplied from a tank toward the object, a second nozzle that jets water to be supplied from the tank to the circumference of the object, in a misty state, and a controller. The controller calculates variations of pressure per unit time on the basis of the first pressure signals repeatedly output from the first sensor, and makes the first nozzle stop water jetting and makes the second nozzle start water jetting when the calculated variations are equal to or more than a threshold range.SELECTED DRAWING: Figure 1
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Inventors:
Katsuya Komatsu
Kabata Enrichment
Kabata Enrichment
Application Number:
JP2019038921A
Publication Date:
September 22, 2021
Filing Date:
March 04, 2019
Export Citation:
Assignee:
Hitachi Construction Machinery Co., Ltd.
International Classes:
B05B12/08; B02C23/00; B05B1/16; B05B9/00; E02F3/36; E04G23/08
Domestic Patent References:
| JP2009148690A | ||||
| JP9144340A | ||||
| JP8126976A | ||||
| JP52158702U | ||||
| JP2009287296A | ||||
| JP2003103192A |
Attorney, Agent or Firm:
Patent Business Corporation Takewa International Patent Office