| 摘要 |
<p>The device has a base plate (11) incorporated with carriers (2, 3) and comprising retaining elements (13) radially positioned on pitch circle. Contact surfaces of the retaining elements for the carriers are arranged in groups in a distance to the base plate. Each of the contact surfaces is diametrically opposite to each other, and has equal distance to the base plate. The base plate is detachably connected with the carriers, and guiding elements (7, 8) are arranged in both sides of the carriers.</p> |
