Plane level measuring instrument for road and bridge construction

Abstract

A plane level measuring instrument for road and bridge construction is disclosed. The instrument comprises a first fixing plate, a second fixing plate and a lifting plate transversely arranged between the first fixing plate and the second fixing plate, wherein a lens assembly is arranged on the lifting plate; a light source and a light absorption plate are arranged on the inner side face of the first fixing plate and the inner side face of the second fixing plate respectively. The lifting plate is leveled to be parallel to the horizontal plane, so that light emitted by the light source penetrates through the convex lens to be emitted to the central position of the light absorption plate, then the plane level measuring instrument is placed on a to-be-measured road surface, and a stabilizing bolt is screwed to enable a placing plate to be horizontal and fixed on the to-be-measured road surface; a first threaded sleeve is rotated and a gradienter is observed to keep the lifting plate horizontal; then a bottom end supporting contact is adjusted to make contact with the to-be-measured road surface, light emitted by the light source is refracted to a light spot on the light absorption plate through the convex lens to deviate, and then the inclination angle of the road surface is measured after calculation. The plane level measuring instrument is simple, saves the measurement cost and is convenient to maintain.

Description

technical field [0001] The invention belongs to the technical field related to road surface measurement, in particular to a plane level measuring instrument for road and bridge construction. Background technique [0002] In the process of road and bridge construction, it is necessary to measure the flatness of the road surface, so as to judge whether the road surface construction meets the standards. [0003] The existing level measuring instrument technology has the following problems: most of the existing road surface levelness measurement is measured by a level instrument, and the level instrument needs to be adjusted multiple times at each point during the measurement process. Simultaneously the cost cost of equipment is higher, is not easy to popularize. Contents of the invention [0004] The object of the present invention is to provide a plane level measuring instrument for road and bridge construction, so as to solve the problems of cumbersome adjustment process a...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a plane level measuring instrument for road and bridge construction, to solve the problems of troublesome adjustment process and high cost of construction proposed in the above background technology

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