| 摘要 |
<p>A weight lifting device comprises a tubular mast (1) having loading and accumulating branches (2, 3) with carrying elements (4) mounted therein, a mechanism (6) for moving the carrying elements (4) along the branches (2, 3) and from one branch (2 or 3) to the other, a hydraulic cylinder (8), a sleeve (25) mounted under the base of the mast (1), two pushers (28, 29) mounted with the possibility of interaction with the lateral surface of the carrying element (4) for moving it from one branch (2 or 3) to the other and each kinematically connected in turn, through a double-arm lever (32, 33), to the corresponding side of a frame (14) mounted on the rod (10) of the hydraulic cylinder (8) with the possibility of movement in relation to it in a plane perpendicular to the axis of the rod and in the direction from one branch to the other. On the rod (10) of the hydraulic cylinder (8) are mounted two cantilevers (39, 40) each provided with a roller (41) at its end, and the arm of each double-arm lever (32, 33) interacting with the pusher (28, 29) is provided with a profiled surface (35) designed to interact with the corresponding roller (41) during the movement of the rod (10) of the hydraulic cylinder (8) towards the base of the mast (1) so that the pusher (28, 29) disengages from the coupling with the carrying element (4) and comes back to the initial position. The weight lifting device is intended for lifting especially heavy loads.</p> |
