Control method and control system for traveling mechanism of milling planer

Abstract

The invention provides a control method and a control system for a traveling mechanism of a milling planer. The traveling mechanism of the milling planer adopts hydraulic transmission, and oil lines of a plurality of hydraulic motors are connected in parallel to a hydraulic pump and used for respectively driving a corresponding track. The control method for the traveling mechanism of the milling planer comprises the steps of acquiring the working pressure of the hydraulic pump and the slippage rate of each track; judging the minimum value in the slippage rate of each track, and taking the minimum value as a target slippage rate; respectively calculating the working pressure change rate and the target slippage rate change rate according to the working pressure and the target slippage rate; calculating the traveling efficiency change rate according to the working pressure change rate and the target slippage rate change rate; and comparing the traveling efficiency change rate with a preset value, and adjusting the displacement of the hydraulic pump or the displacement of the hydraulic motors according to comparison results. The technical scheme of the invention changes the traveling efficiency of the traveling mechanism by adjusting the rolling speed of the tracks to ensure the traveling efficiency change rate to be stable within a preset range and avoid the unnecessary power consumption of the milling planer.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a control method and a control system for a traveling mechanism of a milling machine. Background technique [0002] As a special equipment for road maintenance, the road milling machine is generally used for large-scale milling and crushing operations such as highways, urban roads, airports, etc., and roughening operations for cement concrete roads. [0003] figure 1 It is a side view of the road milling machine. As shown in the figure, the current large milling machine uses four crawlers as the driving mechanism. The milling mechanism moves with the car body to work on the road surface. In order to improve the utilization rate of the whole machine power, the milling devices of most milling machines adopt mechanical transmission at present. The power consumed by the milling and walking actions of the milling machine accounts for more than 75% of its power consumption. At t...

AI Technical Summary

Problems solved by technology

[0009] The present invention aims to provide a control method and control system for the traveling mechanism of a milling machine to solve the problem in the prior art that the milling machine cannot adjust the walking speed according to the change of the external load

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