Mobile hydraulic hoist vehicle - has linkage comprising four bars in horizontal and vertical guides

摘要

The hoist is for use in the building industry, and comprises a mobile supporting frame and a hydraulically-driven linkage lifting the load. The linkage comprises four bars (A,B,C,D) with two points (P1,P2) The supported in the frame. first point coincides with a hinge (S3) for the linkage and slides in a horizontal guide (13), while the second one is between two hinges (S1,S4) for the bar (D), and opposite the first point, working in a vertical guide (14). The bar (A) not connected to the support points is extended (L), the load engaging with the free end (F) of the extension.