TOWING COUPLER OF ARTICULATED TRUCK Russian patent published in 2009 - IPC B60D1/01 B60D1/155 

FIELD: transportation.

SUBSTANCE: towing coupler of articulated truck comprises two forks (7, 8), which are connected to each other by axis (6), one of which is fixed to tractor truck, two hydraulic cylinders (11 12), installed in horizontal plane on both sides from axis, some ends of which are connected to trailer, and the other ones - with tractor truck, extensible pipe (18), having fixed link (19), which is rigidly fastened to tractor truck, and extensible link (20), which is rigidly connected to fork. The latter is connected by means of tension spring (21) with tractor truck. Pressure source (24) communicated with hydraulic tank (25) and hydraulic distributor are installed on articulated truck. Stem cavities of each hydraulic cylinder are pairwise communicated with piston cavities of opposite hydraulic cylinder. Stem and piston cavities of each hydraulic cylinder are communicated between each other via hydraulic damper (17). Hydraulic distributor is arranged with the possibility of pressure source communication with all cavities (13, 14, 15, 16) of hydraulic cylinders at the same time.

EFFECT: improved operational properties.

2 dwg