Handling system for heat treatment oven - has crank drives with continuously variable motors coupled to lifting beams

摘要

The oven has several lifting beams and individual drives, each beam lying adjacent a second beam coupled to a different drive. A crank drive with continuously variable drive motors is used for the displacement beams. These drive motors may comprise DC electric motors with electronic regulation, or continuously variable hydraulic motors pref. coupled to electronically controlled regulation pumps. A microprocessor may be used in either case for the electronic control. Each beam has a motor controlling the stroke and return of the beam and a second motor controlling its raising and lowering.