Driving system of road roller, control method of driving system and road roller

Abstract

The invention relates to the technical field of operation machinery, in particular to a driving system of a road roller, a control method of the driving system and the road roller, and the method comprises the following steps: determining a target speed of the road roller; based on the target speed of the road roller, the actual speed of a front wheel is adjusted by controlling the displacement of a traveling pump and the displacement of a traveling motor; based on the actual power of the hydraulic driving system of the front wheel and the power distribution proportion of the hydraulic driving system of the front wheel and the electric driving system of the rear wheel, the target power of the electric driving system of the rear wheel is determined; based on the target speed of the road roller and the target power of the electric drive system of the rear wheels, the actual speed of the rear wheels and the actual power of the electric drive system are adjusted by controlling the torque and the rotating speed output by the rear drive motor. Thus, the scheme of a double-drive system comprising a hydraulic drive system of the front wheel and an electric drive system of the rear wheel is achieved, the problems existing in a single-drive system of the rear wheel are avoided, and therefore the requirement of a steep ramp can be met.

Description

technical field [0001] The invention relates to the technical field of working machines, in particular to a driving system of a road roller and a control method thereof, and a road roller. Background technique [0002] Road rollers are widely used road equipment, which can roll soil, asphalt concrete and other pavements. In order to ensure construction quality, many road rollers (such as single-drum road rollers) have larger front wheels and smaller rear wheels, such as front and rear. The wheel-to-mass ratio is 17:9. For the rear-wheel single-drive system, due to the small mass ratio of the rear wheels, the adhesion of the whole machine is not enough, resulting in insufficient maximum traction, which makes it unable to meet the requirements of steeper slopes. SUMMARY OF THE INVENTION [0003] The invention provides a driving system of a road roller, a control method thereof, and a road roller, which are used to solve or improve the defect that the rear-wheel single-drive ...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a road roller driving system and its control method, and a road roller, which are used to solve or improve the defect that the rear wheel single drive system of the road roller in the prior art cannot meet the requirements of steeper slopes, and realize the driving system based on the front wheels. The scheme of the dual drive system of the hydraulic drive system and the electric drive system of the rear wheels

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