| 摘要 |
Lifting/lowering apparatus, such as a plane that can be lifted, a table or a lifting platform construction, equipped with at least two adjacent lifting mechanisms that can be extended telescopically which lifting/lowering apparatus comprises a lower frame (1), further a horizontal upper frame (7) supported by which a plane, such as a working plane (5), (6) is adjusted and comprises a lifting mechanism adjusted between the mentioned lower frame and upper frame with the help of which lifting mechanism the upper frame (7) can be lifted and lowered in relation to the lower frame (1) and that the lifting mechanism comprises adjacent pillars (2, 3, 4) in which case each pillar is formed of cylinder parts (2 - 4) that can be moved telescopically in relation to each other which cylinder parts are attached to each other with the help of threads in such a way that the rotation of the parts (2 - 4) in relation to each other changes the height of the mentioned pillars. In order to reduce the construction weight the cylinder parts (2 - 4) are made of plastic and in order to improve the receiving of the sideway loadings the inner diameter of the cylinder part (4) having the smallest diameter is over 200 mm. |
