| 摘要 |
<p>Radial rolling head comprises a holder containing three rotatably mounted rollers (16), a toothed gear with a central gear wheel, a locking cam (30) rotationally fixed to the central gear wheel, a locking mechanism for the locking cam, a spring arrangement in a spring housing (12), and a release mechanism for the locking mechanism. An axial passage (28, 32, 72) is formed through the central gear wheel, the locking cam and at least one part of the spring housing. Preferred Features: The locking cam is a hollow crankshaft having one end rotationally fixed to the central gear wheel and another end rotatably mounted in the spring housing. At least one tension spring acts on one crank arm lying between the ends of the crankshaft.</p> |
