| 摘要 |
<p>The tubular-sectioned steel, plastic or pref. light metal mast, or pylon, is telescopically extensible and can swing through 90 deg. in the base area. Two adjoining tube sections (10) are mutually adjustable lengthways by means of a connecting piece (1), with a guide socket (11) enabling one end to engage in another. There are two or more stop bars (12) at the top end of a section, while the plinth tube is centred in the vertical setting by means of a centering pin fixed to a bracket base. The plinth tube may be assembled from a round guide tube and a rectangular tube.</p> |
