Drive-over extending loading ramps - are attached to fixed ramp and fitted with swivelling extension actuating switch elements to lock or unlock ramp

摘要

The drive-over extending ramps have one end attached to a fixed ramp. The other end is capable of swivelling up and down. The ramp includes an extension which swivels round this end. The extension when placed on to a platform to be loaded or unloaded swivels from one end position into a working position. The extension actuates a first switch element in the working position which unlocks the drive over ramp in this position. When reaching the end position of its extension the ramp actuates a second switch element whick locks the drive over ramp.