| 摘要 |
<p>A height-adjustable support (10) for semi-trailers or the like, comprising a support outer tube (13) which can be fastened to a chassis of the semi-trailer, a slidable support inner tube (14) arranged in the support outer tube (13), at whose lower end region a foot (15) is fastened and which is connected with a nut (17) located on a spindle (16) which is drivable by means of a transmission wherein the transmission has at least a bevel gear stage (20, 24) and a shiftable transmission area located upstream having gearwheels with spur toothing for a fast-gear operation and a low-gear operation, and wherein the at least present gearwheels and pinions, i.e. a fast-gear gearwheel (29) with a fast-gear pinion (23), a low-gear pinion (25b) with a low-gear intermediate gearwheel (30a) as well as a low-gear intermediate pinion (30c) with a low-gear gearwheel (22) of the transmission area located upstream are arranged in pairs in at least three different vertical planes distributed within and/or in front of the support outer tube (13).</p> |
