Axially adjustable supporting element

摘要

The support parts are rotatable in relation to one another around an axial direction and have end-side support surfaces. They sit on facing locating surfaces which are screw surfaces of the same pitch height in relation to the axial direction, so that by rotation of the support parts the axial support distance is variable. The pitch height of the screw surfaces is such that with an axial load between the support parts self-restraint occurs. A rotary spring (8) is arranged between the first support part (2) and the second support part (4) for application of tension. The first and second support parts are non-rotatably and releasably connected in a basic position with minimum adjustment distance of the locating surfaces (4, 5) via an operating device (17).