Positioning and line-drawing device for steel rail

The invention discloses a positioning and line-drawing device for a steel rail. The device comprises a longitudinal positioning member and a vertical positioning member, wherein the longitudinal positioning member comprises a first positioning sleeve, a second positioning sleeve, a cylindrical ruler and a pointer, the first positioning sleeve is fixed on a first fastening bolt on one side of the steel rail, the second positioning sleeve is fixed on a second fastening bolt on the same side of the steel rail, one end of the cylindrical ruler is embedded inside the first positioning sleeve, the other end of the cylindrical ruler is embedded inside the second positioning sleeve, the pointer is nested on the cylindrical ruler in a sliding mode, the vertical positioning member comprises a fixing frame and a line-drawing template, the fixing frame and the line-drawing template are fixed together, the fixing frame is fixed on the steel rail between the first fastening bolt and the second fastening bolt, a reference face of the fixing frame contacts with the bottom of the steel rail, the back of the line-drawing template contacts with the waist of the steel rail, and three line-drawing holes are evenly spaced on the front surface of the line-drawing template along the direction of the steel rail. By the aid of the positioning and line-drawing device, the precision of positioning and line-drawing on the steel rail can be improved.