Movable fixture suitable for fine tuning of urban railway lines

The utility model discloses a movable fixture suitable for fine tuning of urban railway lines, which comprises a fixed frame, a first threaded pipe and a second threaded pipe, first support plates are riveted on the front side and the rear side of the top of the fixed frame, first threaded rods are in threaded connection with two sides of an inner cavity of the first threaded pipe, and second support plates are riveted on two sides of the inner cavity of the second threaded pipe. Filling mechanisms are riveted to the two sides of the top of the first threaded pipe correspondingly, and guide plates are riveted to the two sides of an inner cavity of the fixing frame correspondingly. The fixture has the advantages of being convenient to fill lubricating oil and having an adjusting function, and solves the problems that the position of the fixture cannot be adjusted front and back according to the actual use condition due to the fact that an existing fixture for fine adjustment of the railway line generally does