Group for supporting and tightening a rim of or for a tired wheel

A method for supporting and tightening a rim of or for a tired wheel on a wheel-holder table, said method comprising the following steps:

• arranging a group for supporting and tightening a rim of or for a tired wheel, said group comprising a base, a wheel-holder table, an upright or column projecting upward from said base and supporting at the top said wheel-holder table, a shaft or pin mounted in or alongside said upright or column, a sleeve element or ring nut element constrainable or mountable on said shaft or pin, means for the relative movement of said shaft or pin and said table between at least one first relative work position, in which said pin projects upward with respect to said wheel-holder table and is engageable by said sleeve element or ring nut element so that the sleeve element or ring nut element tightens, together with said wheel-holder table, a rim mounted on the wheel-holder table, and a second relative rest position, in which said shaft or pin does not project upward with respect to said wheel-holder table or in any case it projects with respect to the wheel-holder table to a lesser extent than in said first work position, said sleeve element or ring nut element being constrainable or mountable on said shaft or pin previously mounted in said upright and only when said pin and said table are in said at least one first relative work position,
• arranging said pin and said table in said second rest position, wherein said pin does not project upward with respect to said wheel-holder table or in any case it projects with respect to the wheel-holder table to a lesser extent than in said first work position,
• positioning a rim of or for a tired wheel on said wheel-holder table,
• driving said relative movement means so as to move said pin and/or said table until said pin and said table are brought into said first work position, so that said pin is inserted in an axial hole of said rim starting from one side of the rim until it projects from the opposite side of said rim with respect to that of insertion,
• with said pin and said table in said first work position, constraining or mounting said sleeve element or ring nut element on said pin so that said sleeve element tightens, together with said wheel-holder table, said rim,
• handling said rim or tired wheel mounted on said wheel-holder table.

A group for supporting and tightening a rim of or for a tired wheel, said group comprising:

• a base,
• a wheel-holder table,
• an upright or column projecting upward from said base and supporting at the top said wheel-holder table,
• a shaft or pin mounted in or alongside said upright or column,
• a sleeve element or ring nut element constrainable or mountable on said shaft or pin,
• means for the relative movement of said shaft or pin and said table between
• at least one first relative work position, in which said pin projects upward with respect to said wheel-holder table and is engageable by said sleeve element or ring nut element so that the sleeve element or ring nut element tightens, together with said wheel-holder table, a rim mounted on the wheel-holder table, and
• a second relative rest position, in which said shaft or pin does not project upward with respect to said wheel-holder table or in any case it projects with respect to the wheel-holder table to a lesser extent than in said first work position,
• wherein said sleeve element or ring nut element is constrainable or mountable on said shaft or pin previously mounted in said upright and only when said pin and said table are in said at least one first relative work position,
• wherein in the second relative rest position, the pin is housed thereof in the upright and the table, or in the axial or longitudinal cavity of the upright, so as to project less than 5 cm with respect to the table.