| 摘要 |
A device for protection and handling of electric feed cables ( 20 - 20' ) for mobile use, especially for mobile means ( 26 - 26' ) for lifting and moving loads such as cranes, bridge cranes and the like installed along harbour docks, comprises a mobile frame ( 10 - 10' ), made of metal or other suitable material, provided with a central tower ( 30 - 30' ) connected to one of said mobile means and with opposite arms ( 32 - 32' ), arranged in alignment on a part of a trench duct or raceway ( 12 - 12' ) buried in the ground with the top open front thereof substantially aligned with the surface level ( 14 - 14' ) and screened by a flexible tape ( 16 - 16' ); at least one of the opposite arms ( 32 - 32' ) is provided with means for lifting the flexible tape ( 16 - 16' ), arranged at the top and/or at the bottom of the same, and for guiding and centring the frame ( 10 - 10' ) in cross direction relative to the raceway ( 12 - 12' ).
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