Translation track way steel wheel mechanism

The utility model provides a translation track way steel wheel mechanism, includes steel wheel, transmission shaft, bearing frame, spacer sleeve, and its characterized in that, transmission shaft pass through the parallel key and link to each other with the axle sleeve, and the lateral surface of axle sleeve is the spline, and nylon wheel passes through spline and shaft liner connection, and nylon wheel passes through assembling bolt and steel wheel rigid coupling. The utility model discloses a translation track way steel wheel mechanism, the transmission shaft uses the parallel key to drive the axle sleeve and rotates, the axle sleeve relies on the spline to drive nylon wheel and rotates, nylon wheel passes through assembling bolt and drives the whole rotation of steel wheel, thereby realize ging forward and retreating of steel wheel, be less than bolt intensity because of nylon intensity, event mass motion in -process, the bolt can not split, and area of contact is big between spline assembly back nylon whe