10/20/2026
How do you extend overhead crane coverage when a building column is directly in the way?
An Iowa heavy equipment manufacturer needed crane access between a machining center and an adjacent staging area. The existing building layout prevented the runway from extending into the adjacent bay—and a structural column occupied part of the required travel path.
AFE Crane designed a telescoping bridge crane that extended beyond the normal runway footprint, providing the additional hook coverage the application required.
But extending the bridge introduced another challenge: preventing the telescoping beam from contacting the building column.
AFE Crane developed custom controls using photo eyes and interlocking logic to create a controlled no-fly zone around the obstruction.
- Bridge travel slows as the crane approaches the restricted area
- Travel stops before reaching the column
- Telescoping movement toward the column is restricted when the bridge is within the no-fly zone
- Bridge movement toward the column is restricted when the telescoping beam is already extended
- Normal movement becomes available again once the crane is clear of the restricted area
The result allows the crane to use the available hook coverage around the column while restricting specific movements that could bring the telescoping beam into the obstruction.
Read the full case study: https://zcu.ge/1l3