Screed height-difference adjusting device, paver and screed high-difference adjusting method

Abstract

The invention provides a screed height-difference adjusting device, a paver and a screed high-difference adjusting method. The screed height-difference adjusting device is used for adjusting the height difference between an auxiliary screed and a main screed of the screed, and comprises an angle sensor, an adjusting oil cylinder and a controller, wherein the angle sensor is used for measuring working elevation angle of the main screed; the adjusting oil cylinder is used for driving the auxiliary screed to displace in the height direction; and the controller is used for receiving the working elevation angle measured by the angle sensor, calculating the target displacement of the auxiliary screed in the height direction according to the working elevation angle, and controlling the height difference between the auxiliary screed and the main screed by controlling the adjusting oil cylinder. By virtue of the technical scheme, the angle sensor reads out the working elevation angle of the main screed and the auxiliary screed, and the adjusting oil cylinder determines the to-be-adjusted height value according to the working elevation angle to automatically flex and adjust the height difference. Therefore, the manual work is avoided; and time and force are saved. Meanwhile, the precision of the adjusting value calculated according to the working elevation angle is higher; the evenness of the paved road surface is ensured; and the paving quality of the road is improved.

Description

technical field [0001] The invention relates to the field of road construction machinery, in particular to a height difference adjusting device for an auxiliary screed in a hydraulic telescopic paver, a paver including the device, and a method for adjusting the height difference of the screed. Background technique [0002] The screeds of the telescopic paver are usually arranged in the shape of a square, with the main screed in front and the left and right sub-screeds in the rear. In actual operation, the screed and pavement always maintain a working elevation angle. The existence of the working elevation angle of the screed will inevitably cause the bottom edge of the auxiliary screed to be at different height positions from the bottom edge of the main screed. Therefore, in order to ensure the flatness of the paving surface, the auxiliary screed must be adjusted upward relative to the main screed so that the height of the bottom edges of the two can be adjusted to the same...

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