DEVICE AT A HYDRAULIC LIFTING TABLE

摘要

Arrangement for a hydraulic lifting table of the scissor type with at least two pairs of scissor arms (1, 2) pivotally attached to one another. These are attached at their ends to a lower frame section (3) and an upper table section (4) in such a way as to be capable of pivoting and rolling. The arrangement also comprises a centrally positioned power transmission arrangement pivotally attached to the frame section, being preferably a hydraulic cylinder, the piston rod (8) of which is so arranged as to engage via rollers (9) with guide curves (10, 11). One (10) of these is attached to the frame section (3), and the other (11) is operatively connected to a pair of scissor arms (1). The guide curves (10, 11) are moved towards and away from one another by means of the rollers (9) for the purpose of raising the lifting table and vice versa. A characteristic feature of the invention is the fact that the table section (4) has the form of a plain symmetrical 'E', in which cross-pieces of the 'E'-shape cover the pairs of scissor arms (1, 2) and the power transmission arrangement (7, 8), and that the guide curves (10, 11) are centrally positioned, e.i. in the vicinity of the hydraulic cylinder (7), and that the operative connection constists of a shaft (12) pivotally mounted in the frame section (3), which shaft constitutes the operative connection between the guide curve (11) and the pair of scissor arms (1).