| 摘要 |
A hollow beam 2 includes provisions (12, 13, 14 and 15) to allow mounting a spacer sleeve or support body 6 in its intended location for insertion of a mounting bolt 5 from outside the beam 2. The sleeve (6) at least partially encompasses the mounting bolt 5 and is inserted through an access opening (11) into the hollow beam 2 and is subsequently positioned in registration with attachment holes and which recive the mounting bolt 5.
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