Centring device

The utility model discloses a centring device, including the mounting base, lower chi, go up the chi, locator and positioning bolt, the locator be provided with two and respectively the cover establish at last chi under and on the chi, the chi base plate is fixed on the mounting base down, left side pillar and right pillar are hollow structure and the upper end is equipped with first ring and second ring respectively, all be equipped with the scale mark down on the chi body and the last chi body, left side traveller and right sliding column fix respectively at last chi base plate downside and in inserting left pillar and right pillar respectively, the downthehole positioning bolt that passes respectively of first hole and second is with fixed left traveller and right sliding column, positioning bolt is passed with the fixed position ware in having seted up through -hole and through -hole in locator cylinder top. The utility model discloses the centering operation among the test can be accomplished rapidly sim