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Title:
SELF-PROPELLED TREATMENT MACHINE
Document Type and Number:
Japanese Patent JP2009062708
Kind Code:
A
Abstract:

To provide a self-propelled treatment machine capable of rapidly getting out of a heavily-loaded state associated with the excess of the dead-weight of a conveyor.

In a self-propelled screen as the self-propelled treatment machine, when a controller 50 determines that the load pressure of a hydraulic motor 27 for an under-conveyor is higher than either of that of a hydraulic motor 26 for the screen and that of a hydraulic motor 28 for an over-conveyor and exceeds preset reference load pressure, the controller 50 actuates a drive assisting valve 61 for the under-conveyor, so that pressure oil discharged from the hydraulic motor 26 can be supplied to the hydraulic motor 27.


Inventors:
TANAKA MASAMICHI
SHIOHATA TADASHI
HASEBE TAKAHISA
Application Number:
JP2007000230511
Publication Date:
March 26, 2009
Filing Date:
September 05, 2007
Export Citation:
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Assignee:
HITACHI CONSTRUCTION MACHINERY
International Classes:
E02F7/00; B07B1/28; F15B11/00; F15B11/028; F15B11/16
Attorney, Agent or Firm:
特許業務法人 武和国際特許事務所