| 摘要 |
<p>Telescopic column, in particular for forming one of the lateral uprights of a packaging machine, comprising a fixed bottom guide body integral with the machine frame, and a top slide body, vertically mobile and guided without play within said guide body, as well as cylinder and piston means for controlling said movement. The bottom fixed guide body is made as an extruded section with at least one central hollow cylindrical part, which constitutes the cylinder body of said actuating means, while said top slide body is composed of a moveable cylinder with minimum play within said extruded section, and which constitutes the piston-rod assembly of said actuating means. The external section constituting the bottom fixed guide body has a cross section consisting of an outer quadrangular profile and an inner circular profile, combined together by axial ribbing. <IMAGE></p> |
