Title:
EXCAVATING DEVICE FOR BUCKET ELEVATOR
Document Type and Number:
Japanese Patent JP3546080
Kind Code:
B2
Abstract:
PURPOSE: To provide an excavating device for a bucket elevator capable of grasping individual loads such as the bucket chain tension and excavating force and surely performing the fixed-quantity delivery control.
CONSTITUTION: Oil pressure sensors 22, 23, 24 are provided at various sections, and a controller 25 compares the excavating force calculated from the detected value of the oil pressure sensor 23 (excavating force equivalent pressure + chain tension equivalent pressure) and the detected value of the oil pressure sensor 24 (chain tension equivalent pressure) with the excavating force target value and controls the lateral excavating speed of an excavating device to obtain the prescribed speed target value. The excavating force target value is updated in sequence based on the compared result between the lifting force calculated from the calculated excavating force and the detected value of the oil pressure sensor 22 (lifting force equivalent pressure excavating force equivalent pressure) and the lifting force target value, the lifting force is made coincident with the target value, the delivery quantity of the bulk cargo is made constant, and the fixedquantity delivery control can be surely performed.
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Inventors:
Shigeru Nishisako
Hiroshi Niho
Hisaya Myojin
Tomohiro Yokoyama
Ryoji Taura
Hiroshi Niho
Hisaya Myojin
Tomohiro Yokoyama
Ryoji Taura
Application Number:
JP20629694A
Publication Date:
July 21, 2004
Filing Date:
August 31, 1994
Export Citation:
Assignee:
MITSUBISHI HEAVY INDUSTRIES,LTD.
International Classes:
B65G65/06; B65G67/60; (IPC1-7): B65G67/60; B65G65/06
Domestic Patent References:
| JP59167417A | ||||
| JP487966U | ||||
| JP60228334A | ||||
| JP4116024A | ||||
| JP62103541U | ||||
| JP124694B2 |
Attorney, Agent or Firm:
Toshiro Mitsuishi
Tadahiro Mitsuishi
Tadahiro Mitsuishi