bsmet95
Mechanical
- Aug 16, 2007
- 114
Good morning.
My company designs and builds hoists and underhung bridge cranes. I am working on a proposal for a bridge crane with an extending beam application. See the attachment. The hoist can pick the load at the extended position, and the bridge crane can travel with the beam and hoist extended. When picking the load, a kick-up situation is created at the left end, even with all dead loads figured in. We put anti kick-up rollers under the rail to counteract this situation.
The runway beams are a welded patented track construction. The top flange and web are A36 steel, the bottom flange is narrow and of a special steel. The runways are existing, and are bolted directly to the building steel at intervals.
My question is how to consider any effects in the beam from the kick-up force on the underside of the rail. Any help?
Thanks.
My company designs and builds hoists and underhung bridge cranes. I am working on a proposal for a bridge crane with an extending beam application. See the attachment. The hoist can pick the load at the extended position, and the bridge crane can travel with the beam and hoist extended. When picking the load, a kick-up situation is created at the left end, even with all dead loads figured in. We put anti kick-up rollers under the rail to counteract this situation.
The runway beams are a welded patented track construction. The top flange and web are A36 steel, the bottom flange is narrow and of a special steel. The runways are existing, and are bolted directly to the building steel at intervals.
My question is how to consider any effects in the beam from the kick-up force on the underside of the rail. Any help?
Thanks.
