FIELD: transport engineering. SUBSTANCE: vehicle differential lock has four constantly meshed gear trains 1-2, 3-4, 5-6, 7-8, three-member differential mechanism 36, two reversible overrunning clutches 18, 19 and follow-up device. The latter is made in form of three positive-displacement hydraulic transmissions 25, 27 and 42. Each hydraulic transmission has two hydraulic machines. Hydraulic machines 30 and 33 are coupled, respectively, with members 35 and 38 of three-member differential mechanism. Hydraulic machines 24 and 26 are connected by overrunning clutches 18 and 19 with half- shafts 11 and 12, respectively. Hydraulic machine 41 is mechanically coupled with shaft 13 provided with mechanical coupling with member 39 of three-member differential mechanism, and with rim 14. Hydraulic machine 45 is mechanically coupled with member 38. Hydraulic machines 30, 33 and 41 are adjustable. Working volume governor 49 of hydraulic machine 41 is mechanically coupled with steering gear shaft 50. EFFECT: improved traction and speed characteristics, fuel economy and capacity. 1 dwg
