Title:
GRAB BUCKET DRIVING DEVICE
Document Type and Number:
Japanese Patent JPH0692588
Kind Code:
A
Abstract:
PURPOSE: To prevent the rise of the oil temperature without stopping a motor at the time of unloading.
CONSTITUTION: An inverter control device decreasing the revolving speed at the time of unloading is provided on the motor 13 of an electric hydraulic pump 17 in a grab bucket driving device provided with an unloading circuit 18 releasing the oil pressure from the electric hydraulic pump 17 at the time of unloading on the hydraulic circuit 12 of an electric hydraulic grab bucket.
Inventors:
OKANO SHIGERU
Application Number:
JP24500992A
Publication Date:
April 05, 1994
Filing Date:
September 14, 1992
Export Citation:
Assignee:
ISHIKAWAJIMA HARIMA HEAVY IND
ISHIKAWAJIMA YUSOKI KK
ISHIKAWAJIMA YUSOKI KK
International Classes:
B66C3/16; (IPC1-7): B66C3/16
Attorney, Agent or Firm:
Nobuo Kinutani
Next Patent: 改良された石油−ワツクス分離のための炉過器−遠心分離器系列組合せ