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Title:
LIFT CONTROL DEVICE OF FORKLIFT TRUCK
Document Type and Number:
Japanese Patent JP2002370900
Kind Code:
A
Abstract:

To provide a forklift truck capable of improving energy efficiency, and capable of reducing noise a lift-up time.

At lift-up time for lifting a fork 10, a proportional control valve 28 is put in a fully opening state by a CPU 24, and output control of a hydraulic motor 27 is performed by deriving an output command value of the hydraulic motor 27 on the basis of an operation angle of a lift lever 12 derived by an angle detecting means 20. When simultaneously using the hydraulic motor 27 for the other function such as tilt other than a lift, the hydraulic motor 27 is controlled on output according to a lower value of the output command value. A lift-down time for lowering the fork 10, the hydraulic motor 27 is controlled by a minimum value required for operating the proportional control valve 28, that is, the output command value required for flowing oil round to a hydraulic passage.


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Inventors:
TOYA IKUYA
Application Number:
JP2001176207A
Publication Date:
December 24, 2002
Filing Date:
June 11, 2001
Export Citation:
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Assignee:
NIPPON YUSOKI CO LTD
International Classes:
B66F9/24; (IPC1-7): B66F9/24



 
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