Automatic height-adjustable support for trailers avoiding costly control mechanisms, is based on simple motor-driven screw jack design

摘要

The support (10) includes a motor- (17) driven spindle (15) and nut (16) carrying the support inner tube (12) in the longitudinal direction. Once the foot of the support makes ground contact, the spindle is moved axially or a movement of the nut is caused, relative to the inner tube of the support.