FIELD: transport engineering. SUBSTANCE: proposed differential lock has two constant-mesh trains whose driving gears are coupled with corresponding output links of differential and driven gears are connected with corresponding axle- shafts. It has also third constant-mesh gear train whose driving gear is mechanically coupled with rim of driven gear of gear train for transmitting drive torque to differential, and two reversible overrunning clutches mounted on corresponding axle-shafts. Lock is furnished with adapter made in form of two hydrostatic transmissions, each provided with two hydraulic machines, and control devices to regulate pressure in pressure main lines. First hydraulic machines of transmission are regulated. Control members of above-indicated hydraulic machines are provided with differential transmissions. Pressure main lines are coupled with pressure line by means of indicated control devices. EFFECT: provision of reliable operation under different road conditions. 3 cl, 3 dwg
