| 摘要 |
<p>This invention concerns an arrangement (3) that is comprised as a component (4.2) of an airtransport channel where the air-transport channel component (4.2) comprises two tubular sub-elements, a first sub-element (7) and a second sub-element (8), where the second element (8) has a diameter that is somewhat larger than that of the first element (7), which allows the first element (7) to be inserted into the second element (8) such that the two elements (7, 8) can be displaced relative to each other in a telescopic manner. The arrangement (3) is characterised in that it comprises a glide sleeve (11) that is arranged between the first element (7) and the second element (8), that the glide sleeve (11) comprises a first part (12) that retains the glide sleeve (11) at the second element (8), that the glide sleeve (11) comprises a second part (13) that makes contact with the first element (7) under a force (F) that can be adjusted and that is united with the first part (12), and that all parts of the second part (13) are located in front of the first end (8.1) of the second element. The invention concerns also a ventilation arm (2) and a ventilation system (1).</p> |
