| 摘要 |
The present invention relates to an apparatus for measuring a latitude for a trolley line which is installed in the air to supply electricity to a tram or an electric train. More particularly, a fixing holder and a control holder which are loaded on rails are combined on both sides of a transverse stand and the control holder moves from the transverse stand with a scale which is combined with the transverse stand. A vertical stand which includes a measuring instrument is movably combined with the transverse stand and the scale center of the measuring apparatus is accurately matched by corresponding to the center of a variable rail width. Thereby, the latitude for the trolley line is precisely measured. The variation of the scale which moves with the control holder with regard to the rail width is checked with the naked eye and an improper construction is checked with regard to the rail width. The measuring instrument which is mounted on the vertical stand which easily moves along the transverse stand is located near the trolley line. Thereby, measurement and display processes are precisely and clearly performed. A pinion gear and a rack for moving the scale by the movement of the control holder are exposed to the outside. Thereby, assembly and manufacture processes are conveniently performed and replacement and repair processes due to abrasion and breakdown are easily performed. |
