Pavement flatness detection device

Abstract

The invention provides a road surface flatness detection device, which comprises a guide rail and a detection mechanism matching the guide rail. The detection mechanism adopts a sliding transformer principle to realize the detection of the road surface flatness. A C-shaped groove is formed in one side of the guide rail, and the detection mechanism is connected with the C-shaped groove of the guiderail in a sliding mode through a connecting piece. And the detection mechanism comprises a shell, a sleeve, a sliding rod, a sliding rheostat, a fork rod and a sliding wheel which are arranged in theshell. The device is simple in structure, high in practicability, easy to operate, convenient to carry and high in use flexibility, the influence of manual subjectivity is reduced substantially, andthe detection efficiency and the detection precision are improved; the device is suitable for the construction, detection, maintenance and other processes of various pavements; the slide sheet of theslide rheostat slides to change the resistance of the slide rheostat, and the slide sheet of the slide rheostat slides to cause the change of voltage and current, so that the flatness of a road surface is detected.

Description

technical field [0001] The invention relates to the technical field of detection equipment, in particular to a road surface smoothness detection device. Background technique [0002] The flatness detection of subgrade and pavement engineering is specifically to detect the deviation value of the longitudinal unevenness of the road surface. According to the current road quality inspection regulations, the flatness index is one of the important indicators for the acceptance of subgrade and pavement engineering. It has a great impact on vehicle dynamic characteristics, driving quality and It has a direct impact on the service life of roads. [0003] There are many detection methods in road surface roughness detection. According to the detection principle, road roughness detection technology can generally be divided into two types: section type and reaction type. Different equipment adopts different detection technologies. [0004] The common ones are 3m ruler detection, continu...

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Problems solved by technology

[0005] Among them, the 3m ruler method is easy to operate and the measuring tool is easy to carry, and has been widely used in our country. However, due to the large subjective influence of this method, the accuracy of the measurement results is low and the measurement efficiency is also low, which is time-consuming and laborious.

[0006] The continuous flatness meter detection method can reflect the real section, has high precision, is portable and multi-functional, but the operation procedure is relatively complicated, which leads to the low detection efficiency of this method, and is usually only suitable for serious road damage.

[0007] The vehicle-mounted jolt accumulator has the advantages of continuous testing and high efficiency, but its calibration is difficult

The vehicle-mounted laser leveling instrument has the advantages of fast speed, high precision, strong functions, and automation, but the cleanliness of the road surface will have a certain impact on the test results, and the test on rainy days or roads with water will be limited to a certain extent

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