Ironing board of asphalt paver with downward deformation by being pre-pressed by strut and pull rods

Abstract

The invention discloses an ironing board of an asphalt paver with downward deformation by being pre-pressed by strut and pull rods. The ironing board comprises a base segment ironing board and a mechanically assembled and widened ironing board constituted by a plurality of lengthened segment ironing boards, wherein the base segment ironing board is formed by connecting two single-segment base segment ironing boards; a base segment ironing board support is arranged on each single-segment base segment ironing board, a lengthened segment ironing board support is arranged on each lengthened segment ironing board, and a plurality of strut and pull rods are arranged between the two base segment ironing board supports and a plurality of lengthened segment ironing board supports; and the left side and right side of the mechanically assembled and widened ironing board are symmetrically gradually downwards inclined and deformed along the normal line direction of the bottom surface of the mechanically assembled and widened ironing board under the action of the plurality of strut and pull rods, the downward inclination deformation amount h is 0-60mm, and the greater the width of the mechanically assembled and widened ironing board, the bigger the value of h. The ironing board disclosed by the invention has the advantages of reasonable design, convenience in processing and manufacturing, convenience and quickness in operation, low implementation cost, wide range of application, and capability of effectively solving the thermal deformation problem of the ironing board of the paver during the working process.

Description

Technical field [0001] The invention relates to a screed for a paving machine, in particular to a screed for an asphalt paving machine that is deformed downwardly by a pre-compression rod. Background technique [0002] As the core working device of the asphalt paver, the screed directly determines the paving quality and performance of the machine. At present, the screeds of asphalt pavers at home and abroad adopt a rectangular box structure welded by steel plates, and the bottom is fixed with a wear-resistant bottom plate by bolts. When paving the hot mix asphalt mixture, the screed plate of the paver will be heated to a high temperature above 130°C, while the upper part of the screed box is at ambient temperature. Due to the large temperature difference between the top and bottom of the screed box structure, the expansion of the lower part of the screed at a high temperature is much greater than that of the upper part of the screed at a low temperature, which causes the entire ...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a kind of asphalt paver screed in which the tie rods are pre-pressed and deformed downwards in view of the above-mentioned deficiencies in the prior art. Low, wide application range, can effectively solve the problem of thermal deformation of the paver screed in the working process, and improve the paving smoothness of the road surface

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