Intelligent GPS (global positioning system) elevation and average thickness control system of floated screed plate paver

Abstract

The invention provides an intelligent elevation and average thickness control system of a floated screed plate paver, and the system provided by the invention comprises an industrial computer, a measuring type GPS receiver, a distance meter, an inclinometer, a displacement transducer, a velocity transducer, a longitudinal slope instrument and other devices. In a GPS mode, design data is input in advance only, a levelling instrument is not required for measuring the elevation of the original ground, an elevation datum line is not erected, and leveling operation hands are not used at two sides of the paver, so that the elevations of the original ground and a newly paved road surface can be accurately recorded; in a compensating beam mode, measured data are participated in calculation of the average thickness for mileage per millimeter, thus the paved thickness can be recorded accurately; and in a longitudinal slope mode, the actual paved thickness can be recorded accurately on the basis of the traditional control method. In addition, the three operating modes can be converted quickly, thus overcoming the defects at the starting stage of the original compensating beam mode, ensuring continuous paving under the condition of abnormal GPS signals, and realizing flexible conversion under the condition of complicated road condition design.

Description

technical field [0001] The invention relates to a control system for the paving elevation and average paving thickness of a floating screed paver. The system uses measuring GPS receivers, speed sensors, displacement sensors, slope gauges, non-contact range finders, industrial computers and other equipment as well as computer software to cooperate with the hydraulic leveling control system of the paver to realize fully automatic road elevation and average paving Thickness control. As long as the design data is input in the system computer control program in advance, there is no need to use a level gauge to measure the original road surface elevation, and there is no need to set up a height reference line as the reference surface of the paver slope gauge, and no leveling operators are required on both sides of the paver. [0002] The floating screed paver referred to in the present invention refers to an asphalt concrete paver or a paver for paving other road-building materials...

AI Technical Summary

Problems solved by technology

The above-mentioned road surface elevation control method has the following defects: 1. It is necessary to manually measure and calculate the original road surface elevation and the new road surface elevation; 2. It is necessary to manually erect the paving elevation datum line or datum surface; Fully reflect the influence of the original road surface elevation on the elevation of the paver; 4. If the elevation is erected with a steel wire rope, the wire rope will inevitably have a certain sag deflection resulting in inaccurate reference elevation; The road surface is not smooth and not as designed

[0007] 2. 3DTPS (total station) control system for paver, which is not widely used

The technical defect of the existing non-contact balance beam system is that, limited by the number of range finders, the number of points participating in the calculation of the weighted average value of the road surface height is limited, which cannot fully reflect the unevenness of the original road surface. When the road surface elevation changes Control errors also occur when the wavelength is the same distance as the rangefinder

The contact balance beam is bulky, complex in structure, troublesome to maintain, and the control accuracy is affected by the number of wheels and the length of the balance beam

Images