Excavator walking condition adaptive control system, control method and excavator

Abstract

The invention discloses a self-adaptive control system and control method for excavator walking conditions, comprising a pressure sensor arranged on the walking pilot valve, a main controller arranged on the frame, and a Adaptive mode switch, proportional solenoid valve set on the main pump. When the adaptive mode switch is set to ON, the pressure sensor collects the pilot pressure of the travel pilot valve and transmits this signal to the main controller. The main controller detects the current pilot pressure and the working mode of the main pump. When the pilot pressure ≥ At 8bar, the main controller outputs corresponding instructions according to the current working mode of the main pump. The invention automatically recognizes the running conditions through the system, and automatically increases the power of the main pump in the light-load mode, thereby increasing the flow supplied to the walking motor, increasing the walking speed of the excavator, shortening the walking time, and improving work efficiency; on the other hand, the flow The increase increases the maximum torque of the travel motor.

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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