Cooling system of traveling reduction gear lubricating oil

摘要

PROBLEM TO BE SOLVED: To provide a lubricating oil cooling device for a traveling speed reduction gear that enables optimal temperature control for lubricating oil and has a lubricating oil pump that can be started up with a relatively small motor without running the risk to cause damage or the like to an oil cooler even in a cold work environment with a temperature sensor for the lubricating oil installed outside a wheel mounting tube.;SOLUTION: During startup operation, provided that the detected temperature at a traveling motor is higher than the reference temperature, the lubricating oil pump is driven at a speed in a lower speed range relative to the normal operation speed. In addition, during the startup operation, the rotation speed of the drive motor for the lubricating oil pump is increased in correspondence to a rise in the temperature detected by a lubricating oil temperature detection sensor.;COPYRIGHT: (C)2010,JPO&INPIT