| 摘要 |
PURPOSE:To make control without deviation of response according to the temperature of oil by a method in which the temperature of working oil and the speed of operation are detected and stored, and correction is made for the operating speed of a working oil-pressured cylinder, which is indicated by an operator, on the basis of oil temperatures and operating speeds stored. CONSTITUTION:Pressure oil is supplied through an electromagnetic proportional valve 11 to an oil-pressure motor A1 for slewing by an oil-pressure pump 10. An oil temperature detector 12 is provided at the nozzle of the pump 10, and a detector 19 for slewing speeds is also provided to the motor A1. An indicated slewing speed signal SS is given to a slewing operator lever 13. The indicated signal SS of the lever 13, oil temperature signal TD, and slewing speed signal SD are input in a controller 14. The driving speed S is determined on the basis of a function of oil temperature TP and slewing speed SD stored in a memory 15 in the controller 14, and the valve 11 is controlled. Control without the delay of answer according to the temperatures of working oil can thus be made. |
