Hello. I am looking into a unique lifting situation and do not have much experience with mobile cranes, so I am hoping to get some insight here.
We are lifting a 23T test article into position within a high bay. Our over head bridge crane is only rated to 20T, so we can't use it for this lift. We do have a 70ft tall roll up door that has an area to stage a mobile crane outside the building and reach in. The test customer would like us to evaluate using a mobile crane, staged outside the building to lift and place their test article. The main issue with this plan is that the boom can not reach the test stand at the length required for the initial pick, and the roof is too low to extend the boom long enough for this. The test customer thinks we can just lift their equipment from the pick up point, get enough clearance off the floor to tilt the boom down, extend the boom so that the test article is over the stand, and then lower the test article.
They have identified a crane that can handle the loads at those operating radii, but the problem I am having is finding a crane that can telescope the boom out while under that load. From my digging, it seems like the boom is telescoped out and then pinned into place before loading. Is this strictly the case? Are there any cranes that handle this type of operation?
Thanks for any info or advice!
-AM
We are lifting a 23T test article into position within a high bay. Our over head bridge crane is only rated to 20T, so we can't use it for this lift. We do have a 70ft tall roll up door that has an area to stage a mobile crane outside the building and reach in. The test customer would like us to evaluate using a mobile crane, staged outside the building to lift and place their test article. The main issue with this plan is that the boom can not reach the test stand at the length required for the initial pick, and the roof is too low to extend the boom long enough for this. The test customer thinks we can just lift their equipment from the pick up point, get enough clearance off the floor to tilt the boom down, extend the boom so that the test article is over the stand, and then lower the test article.
They have identified a crane that can handle the loads at those operating radii, but the problem I am having is finding a crane that can telescope the boom out while under that load. From my digging, it seems like the boom is telescoped out and then pinned into place before loading. Is this strictly the case? Are there any cranes that handle this type of operation?
Thanks for any info or advice!
-AM