FORKLIFT TRUCK LINKAGE Russian patent published in 2015 - IPC B66F9/12 

FIELD: transport.

SUBSTANCE: forklift truck includes linkage system (300) which contains the first arm (1) pivotally connected at its one end with roller (1.4) at the point (1.1) which can move vertically inside guide (6.1) of adjusting carriage/element (6), and at its opposite end is connected with fork (4) by means of fork carriage (5) at the pivot point (1.3). The second arm (2) is pivotally connected with the first arm (1) at the pivot point (1.2). The opposite end of the second arm (2) is pivotally connected with adjusting carriage/element (6) at the pivot point (2.1). The pivot points (1.1) and (2.1) are located on or adjacent to centre line of guide (6.1). Tilt angle of fork (4) and fork carriage (5) is limited by the third arm (3) which is pivotally connected at its first end with the second arm (2) at pivot point (3.2), and at its opposite end is pivotally connected with fork carriage (5) at pivot point (3.1). During operation the arm (3) forces the fork carriage (5) to turn around the pivot point (1.3) to compensate for constantly changing angle of the first arm (1) while maintaining generally constant angle with guide (6.1) thus providing fork (4) location essentially in horizontal position throughout the entire movement of linkage system.

EFFECT: cost reduction.

15 cl, 41 dwg