Walking condition adaptive control system and method for excavator, and excavator

Abstract

The invention discloses a walking condition adaptive control system and method for an excavator. The adaptive control system comprises a pressure sensor arranged on a walking pilot valve, a main controller arranged on a rack, an adaptive mode switch arranged on a trim panel in a cab, and a proportional solenoid valve arranged on a main pump. When the adaptive mode switch is set to ON, the pilot pressure of the walking pilot valve is collected through the pressure sensor, and the pressure signal is transmitted to the main controller; the current pilot pressure and the working mode of the main pump are detected through the main controller; and when the pilot pressure is no less than 8 bar, the corresponding command is output through the main controller according to the current working mode of the main pump. According to the adaptive control system, the walking condition is identified through the system automatically, and the power of the main pump is improved in the light load mode automatically, so that the flow supplied to a walking motor is improved; the walking speed of the excavator is increased, and the walking time is shortened; the working efficiency is improved; and on the other hand, through increase of the flow, the maximum torque of the walking motor is improved.

Description

technical field [0001] The invention relates to a walking control system and method for an excavator, in particular to a walking condition adaptive control system and method for an excavator. Background technique [0002] As the price of diesel continues to rise, excavator users are paying more and more attention to the fuel consumption of the machine, and lower fuel consumption means higher profits. For the same machine, the greater the load, the more fuel the engine consumes. During the working process, the main load of the engine comes from the main pump, so the greater the power of the main pump, the greater the engine load. [0003] In pursuit of lower fuel consumption, users work in E mode with lower main pump power most of the time. At this time, when the machine is only digging, the flow provided by the main pump is sufficient to meet the needs of each action of the working device and compound operations. When the excavator is walking, the main pump needs higher p...

AI Technical Summary

Problems solved by technology

When the excavator is walking, higher power of the main pump is required to provide more flow, while in E mode, the main pump provides less flow, so the excavator walks at a slower speed, giving the user the feeling that the excavator is walking Slow and weak, often causing user feedback or complaints

On the other hand, the user's inherent operating habits determine that he will not actively switch the working mode to the P mode when he controls the excavator to walk, so the excavation efficiency is high in the E mode, but the walking speed is slow and weak.

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