Control method and device for hydraulic oil fan rotating speed and excavator

Abstract

The invention provides a control method and device for the hydraulic oil fan rotating speed and an excavator. The control method includes the steps that the current hydraulic oil temperature of the excavator after the excavator is started is obtained; the current hydraulic oil temperature is within a preset zone, a first hydraulic oil fan rotating speed corresponding to the current hydraulic oil temperature is obtained; and when a starting motion signal generated by an air-conditioner switch of the excavator is received, the first hydraulic oil fan rotating speed is compared with the minimum hydraulic oil fan rotating speed for maintaining normal running of an air-conditioner, and the higher fan rotating speed in the first hydraulic oil fan rotating speed and the minimum hydraulic oil fan rotating speed serves as the current hydraulic oil fan rotating speed. According to the method, the cooling effect of hydraulic oil is guaranteed, and meanwhile normal running of the air-conditioner is guaranteed. When the excavator works, under the conditions of different hydraulic oil temperatures, the hydraulic oil fan rotating speed is adjusted according to the hydraulic oil temperature, and the fuel consumption is greatly reduced on the premise that the cooling effect is achieved.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a method and device for controlling the rotational speed of a hydraulic oil fan and an excavator. Background technique [0002] With the development of science and technology, excavators have become indispensable construction machinery in production and construction. [0003] The working environment of the excavator is complex, and the reliability of the machine itself is also required to be higher and higher. Among them, when the hydraulic oil fan cools the hydraulic oil cooler, when the hydraulic oil fan rotates at a low speed, it will affect the cooling effect of the air conditioner condenser. In addition, the hydraulic oil fan is cooled at a certain speed. When the hydraulic oil temperature is low, more fan speed is wasted, which is not conducive to saving fuel consumption. [0004] Based on the above reasons, there is an urgent need for a technology to control the spee...

AI Technical Summary

Problems solved by technology

Among them, when the hydraulic oil fan cools the hydraulic oil cooler, when the speed of the hydraulic oil fan is low, it will affect the cooling effect of the air conditioner condenser

In addition, the hydraulic oil fan is cooled at a certain speed. When the hydraulic oil temperature is low, more fan speed is wasted, which is not conducive to saving fuel consumption.

Images