| 摘要 |
<p>Apparatus for raising a generator (2) onto a top platform (4) of a tower (5) comprises a jib (10) having jib members (20, 21) which are separably secured together. The jib (10) is raised by a hoist towards the top of the tower (5), and a piston rod (12) of a ram (14) pivotally engages a bore (16) in the tower (5) so that the jib (10) is pivotal from a first orientation with the jib (10) horizontal to a second orientation with the jib (10) extending vertically upwardly. A pair of winch ropes (55) around pulleys (56, 57) on the jib (10) are attached to the generator (2) for raising the generator (2) to the jib (10) when the jib (10) is in the horizontal first orientation. The jib (10) is then pivoted in the direction of the arrow A into the second orientation by secondary winch ropes (65) and the generator (2) is then lowered onto the platform (4) where it is secured thereto. On securing of the generator (2) to the platform (4) the jib (10) is disengaged from the tower (5) and lowers to the ground.</p> |
