Portable rail vehicle wheel pair dimension measurement instrument of high accuracy

The utility model discloses a portable rail vehicle wheel pair dimension measurement instrument of high accuracy, which comprises a bod, the setting is at the anterior module slip table guide rail oforganism, motor drive with module slip table guide rail coaxial coupling, fix on module slip table guide rail, and the laser displacement sensor who moves along with the level motion of module slip table guide rail, on the parallel arrangement module slip table guide rail, and be used for the horizontal motion displacement of matched mould group's slip table guide rail to carry out the grating chiof counting, the setting is at the organism rear portion, and be used for back -to -back wheelset distance to carry out measuring laser rangefinder sensor, the setting is at the underpart, and line location's locating lever is advanced on the wheel rim summit that is used for the wheel pair, the setting is at the underpart, and be used for fixing the electro -magnet at the right wheel internal surface of measured wheel wi