Fixed preceding adjusting device is laid to track

The utility model discloses a fixed preceding adjusting device is laid to track is current to laying orbital adjustment for overcoming, artifically beats unable assurance installation accuracy with the hammer with ordinary crow bar and wedge, and work efficiency hangs down, and intensity of labour is big, and the shortcoming that appears the incident easily provides. On stretching over the fixed portal crossbeam of rail foundation roof beam, install down end band rail clamp's perpendicular adjustment screw, below the crossbeam of portal stand, transversely install the last horizontal screw rod of being connected with the body of rod vertical cross that erects adjustment screw, lieing in horizontal screw rod lower part on the stand of the both sides of portal, transversely installing the center pair to two of the I -shaped underbeam of track horizontal screw rods down, its looks remote site is fixed with the dop respectively. Through vertical and horizontal about the screw rod carry out the full orientation ad