Method of disposing a tubular sleeve on a supporting element and apparatus to put said method into practice

摘要

A method of disposing a tubular covering sleeve for electric-cable joints on a supporting element may include arranging the sleeve in a rest and not yet expanded condition; causing radial expansion of the sleeve starting from axially opposite end portions; and arranging the sleeve in a radially expanded condition on the supporting element. Radial expansion of the sleeve may be carried out gradually, starting from the end portions of the sleeve toward an axially intermediate portion of the sleeve. The method of may include arranging the sleeve; arranging a pair of expanders, each at a respective end of the sleeve and at a substantially coaxial position relative to the sleeve; introducing the expanders into the respective ends of the sleeve; abutting distal ends of the expanders against each other at an axially intermediate portion of the sleeve; and arranging the sleeve in a radially expanded condition on the supporting element.