| 摘要 |
PROBLEM TO BE SOLVED: To provide a ladder mounting fixture for a manhole, which is excellent in guiding performance into and out of the manhole by virtue of a handrail frame detachably mounted on an outside of the manhole, holds an upper portion of a ladder hung therefrom into the manhole and rested on the interior of the same, to thereby improve the safety of the worker, and to provide a ladder device for the manhole using the fixture. SOLUTION: The ladder mounting fixture for the manhole is formed of a support base 1 detachably mounted on an opening edge frame C of the manhole, the handrail frame 2 detachably or fixedly mounted on the support base on the outside of the manhole, and a ladder support portion 3 mounted on the support base on the inside of the manhole. The ladder device for the manhole is formed of the ladder mounting fixture and the ladder 4 detachably mounted on the ladder support portion. The ladder may be constituted telescopic. COPYRIGHT: (C)2005,JPO&NCIPI
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