Introduction of mechanical contact type floating leveling beam for asphalt paver

Mechanical contact type leveling beam is a floating leveling beam, also called mechanical contact balance beam (or mechanical contact, it is installed on the base beam) of asphalt paver, can greatly improve the smoothness of asphalt pavement.

1, the basic structure of the mechanical contact type floating leveling beam

A mechanical contact type floating leveling beam is composed of front and rear longitudinal beam and cross beam, the front is composed of two groups of long rails (usually around 9M) and a plurality of slipper composition (usually 16 or so, the rear is composed of two groups of short beam (usually around 6M) and a plurality of wheels (general for the 32 or so), before and after the beam by the screed part of cross beam and paver together.

2. The working principle of mechanical contact type floating leveling beam

Leveling beam front longitudinal beam multiple slipper and unpaved subgrade surface contact, to reduce the influence of uneven base; a plurality of wheels at the rear part of the walk in the newly paved road on which the mobile vertical reference, it balances the road surface roughness; longitudinal beam through the screed part cross beam and paver connected together, the average error of the foundation stage, the automatic control of the paver to obtain the best information data, so as to improve the smoothness of the road.

3. Characteristics of mechanical contact type floating leveling beam

(1) the leveling beam is installed on both sides of the spreader, and does not change any structure of the paver, and adopts the sectional structure to assemble, disassemble and transport conveniently and quickly.

(2) the traditional paver used benchmark for setting the reference line, use wire rope along the road or pavement, using leveling beam to save time, reduce labor intensity, improve the accuracy and quality of laying laying benchmark.

(3) the leveling beam is made of airplane aluminum. It is light, high strength and reliable in quality. It is suitable for the bad work of highway construction.

4, the mechanical contact type floating leveling beam in the use of the existing problems

(1) the slipper front beam with constant and subgrade under seal spreading asphalt binder, have a certain impact on the leveling precision; a plurality of rear rails with the walking wheel shop in the stalls (even non bend bend resistance) often track, has been influencing the smoothness of pavement the.

(2) it is very inconvenient to install and use (especially in bend, U-turn or change of field) compared with non contact leveling beam.

(3) the control accuracy has no non-contact leveling beam height.

For these reasons, the mechanical contact type floating leveling beam has gradually been replaced by the non-contact leveling beam.