A wheeled rangefinder

Abstract

The invention discloses a wheel type range finder which comprises a range finder body. The range finder body comprises a wheel carrier and a measurement wheel. The wheel carrier is connected with a guide wheel through a guide frame. A guide groove matched with a guide rail is formed in the wheel face of the guide wheel. The guide wheel is installed in front of the measurement wheel. The guide wheel with a positioning groove is installed on the wheel type range finder and conducts guiding in front of the measurement wheel, the guiding performance is good, it is avoided that the measurement wheel on the rail is likely to fall off the face of the rail, and the measurement precision is greatly improved. The range finder is placed on the face of the rail and can be pushed forwards at a high or low speed, more time and labor are saved for operators, the measurement efficiency is improved, the problems that in the prior art, measurement is not precise, operation is not convenient and time and labor are wasted are effectively solved, and the wheel type range finder has the advantages of being simple in structure, convenient to operate, use, assemble, disassemble and maintain, and low in price.

Description

technical field [0001] The invention relates to a wheel-type distance measuring instrument used for railway track distance measurement, and belongs to the technical field of distance measuring instruments. Background technique [0002] A roller rangefinder is a measuring device. It consists of a handle, a distance-measuring wheel and a reading device. A connecting rod is installed at the lower end of the handle, a wheel frame is installed at the lower end of the connecting rod, and a distance-measuring wheel is installed in the wheel frame. The wheel distance meter is specially designed and manufactured for outdoor distance measurement, and is suitable for various ground conditions, including hillsides, grasslands, rough construction sites, etc. The lightweight design makes it very convenient for field operators to carry and greatly reduces work fatigue. [0003] But when existing wheel-type range finder is used for railway track measurement, measuring wheel is placed on r...

AI Technical Summary

Problems solved by technology

[0003] But when existing wheel-type range finder is used for railway track measurement, measuring wheel is placed on rolling to measure, because of rolling on the railway track width is narrower (rail width 70mm), often can fall off when promoting range finder. Falling off the surface of the track and putting it back on the track for measurement will lead to inaccurate measurement of the track length and unreliable data. Even if it does not fall, the measuring wheel will swing left and right on the track and will not always be on the horizontal center, which will also lead to inaccurate measurement data. Inaccurate, and the operation is time-consuming and labor-intensive, requiring a high level of operator skills

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