Equipment for leveling large-span light truss bridge surface

Abstract

The invention discloses equipment for leveling a large-span light truss bridge surface. The equipment comprises a truss body, wherein the front part, the middle part and the rear part of a lower end of the truss body are respectively provided with a main spiral roll shaft, a first main leveling roll shaft and a second main leveling roll shaft, and the main spiral roll shaft comprises a first spiral roll shaft and a second spiral roll shaft. Truss type suspended walking is adopted, walking devices are arranged at a left end and a right end, and overall lifting is achieved through the thread transmission effect of a second lead screw and a second inner thread sleeve; the paving and leveling system is composed of a main spiral roller shaft and two main leveling roller shafts; the spiral roll shaft adopts positive and negative spirals and a scraping plate to distribute materials, and stirring is carried out again in the paving process, so gravel materials in the concrete are more uniform, and surface shrinkage of the bridge floor after final setting is more uniform. The two leveling roll shafts are subjected to rotary excitation, so density of concrete on the bridge floor meets the requirement, and slurry is extracted after accurate leveling, so flatness of the bridge floor meets the design requirement.

Description

technical field [0001] The invention belongs to the technical field of bridge deck construction, in particular to a large-span light-duty truss surface leveling machine. Background technique [0002] At present, the construction of bridges and highways in our country has been rapidly developed under the impetus of the economy. People have higher and higher requirements for the quality of bridge decks and driving comfort, and the construction quality of the integrated layer of the bridge deck has a great impact on the quality and performance of the bridge deck. have a direct impact. The integrated layer of the bridge deck has the functions of protecting the beam body, leveling the bridge deck, and improving the mechanical performance of the bridge deck. With the emergence of large-span light truss screeds, the bridge deck integrated layer can basically be constructed using the full-width pouring construction technology to ensure the construction quality of the bridge deck in...

AI Technical Summary

Problems solved by technology

[0004] However, due to the limitation of the operating width of the three-roller or two-roller pulp leveling machine, it is generally necessary to divide the pouring construction into 2-3 construction sections. During the process, it is necessary to move the machine many times and remove the walking track. Seams are difficult to handle, and cross-contamination is more serious

Because it needs to be poured in sections, it is difficult to perform linear control, and it is easy to cause the problem of construction staggering, which makes the thickness of the asphalt layer on the bridge deck uneven, and it is easy to cause quality problems such as cracks and peeling when heavy vehicles are running. , has a great impact on driving comfort

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