LIFTING PLATFORM OF SHAFT HOIST AND METHOD OF LIFTING Russian patent published in 2016 - IPC B66B17/18 B66B11/02 

FIELD: machine building.

SUBSTANCE: lifting platform of shaft hoist comprises power system (1) and four-rod lifting device (5). Pivotal rod (3) connected to power system (1) is located on lifting device (5). Power system (1) also includes explosion-proof engine (1-1), upper limit switch (1-2), lower limit switch (1-5) and drive pulley (1-6). Explosion-proof motor (1-1) is connected with drive pulley (1-6) through steel rope (1-4), on which there is locking plate (1-3). Drive pulley (1-6) is connected with additional pulley (1-8) by means of additional steel rope (1-7), on which there is plate (1-9) for enabling of moving with enabling moving rod on it (1-10). During implementation of lifting platform lifting method explosion-proof motor (1-1) provides rotation of drive pulley (1-6) through steel rope (1-4), thus providing for rotation of additional pulley (1-8). By moving of plate (1-9) moving of rod (1-10) in groove of rotary rod (3) is performed with enabling of its circular movement and movement of lifting plate (5-1). Connecting rod (5-2) provides rotation of lever (5-3) around holder (5-4), thus ensuring implementation of reliable lift of lifting platform.

EFFECT: invention enables simplified design and ease of installation and maintenance, stable and reliable operation, and also has function of automatic fixation.

4 cl, 5 dwg