| 摘要 |
The present invention concerns in particular a process for mounting onto a wheel rim ( 10 ), on the one hand a tyre ( 600 ) comprising first and second beads ( 620, 610 ) respectively designed to be mounted on a first and a second rim seat ( 13', 13 ''), and on the other hand a safety support designed to be mounted inside the tyre on a bearing surface of the rim. This process comprises the following successive stages: (a) the tyre provided with the support in its inside space is brought to the rim, offering the second bead ( 610 ) on the side of the first seat ( 13 '), (b) the second bead is slipped over the bearing surface so as to introduce it into a mounting groove and the support is positioned partially in place on the bearing surface, the first bead then being located axially outside the first seat, (c) the support is fitted fully onto the bearing surface, (d) the first bead ( 620 ) is mounted on the first seat, (e) the second bead is extracted from the groove so that it can be brought axially outside a projection of the second seat ( 13 ''), (f) the second bead is mounted on the second seat. According to the invention, before implementing stage (b) a mean ( 510 ) for extracting the second bead in positioned at the bottom of the groove and, to implement stage (e), the second bead is guided axially towards the outside of the groove and the second seat by pivoting the extraction means around an axis ( 512 ) located radially on the inside of the rim. |
