Leveling system, paver and leveling method

Abstract

The invention discloses a leveling system, a paver and a leveling method. The leveling system comprises a first sensor for detecting height deviation on two sides of a screed plate and a speed difference controller. According to the leveling system and the leveling method disclosed by the invention, a height deviation signal of the first sensor is received by virtue of the speed difference controller, and the motion of left and right leveling displacement regulators is controlled by virtue of a mode of limiting the speed difference between the left and right large-arm hinge joints. According to the leveling system and the leveling method, the problem that the screed plate is twisted because the actions of leveling displacement regulators (generally leveling cylinders) on two sides of a main engine are not coordinated is fundamentally solved by limiting the speed difference between the left and right large-arm hinge joints, so that the pavement paving quality is improved, and various construction conditions are met.

Description

technical field [0001] The invention relates to a leveling system and method for a paver, belonging to the technical field of engineering machinery. Background technique [0002] Such as figure 1 As shown, the paver generally includes a main machine 1 and a screed 2, and the screed 2 is respectively hinged to the left leveling displacement regulator and the right leveling displacement of the main machine 1 through the left big arm 31 and the right big arm 32 on both sides of the main machine 1. regulator (usually a leveling cylinder). The main engine 1 is responsible for receiving the mixed material and transporting it to the entire paving width in front of the screed 2, and dragging the screed 2 forward; the screed 2 is responsible for smoothing and compacting the mixed material and finally shaping the road surface. [0003] The screed 2 maintains balance under the action of its own weight, the supporting force of the mixture, the resistance of the pile, the friction of t...

AI Technical Summary

Problems solved by technology

And when the height of the hinge point of the boom is not coordinated, so that when the height difference between the hinge points of the boom on both sides changes too fast, the material under the screed has no time to fill or exit the changed space under the screed, and the screed is too late Twisting deformation of the screed in response to changes in elevation at the boom hinge point

[0010] For example, when the leveling oil cylinder on one side is stretched out, while the leveling oil cylinder on the other side is retracted, so that the hinge points on the left and right sides of the big arm are one high and one low, if the expansion and contraction speed of the oil cylinder is relatively slow, the two sides of the screed will The side will gradually become higher and lower, and the paving material under the screed will also adapt to this change, so that the distortion of the screed during this process is small or even negligible; and if the expansion and contraction speed of the oil cylinder is relatively fast, Before the paver material under the screed has time to adapt to this change and make the screed equally high and low, the boom on the left and right sides and the screed as a whole will be distorted and deformed, affecting the road surface paving quality

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