FIELD: transport.
SUBSTANCE: invention relates to automotive industry, namely, to extra device for increasing wheeled tractor cross-country capacity. Proposed device comprises extra forced-locked drive axle 1, transfer gear case, overrunning coupling and pressure cylinder, hydraulic control valve, hydraulic pump, hydraulic pump cut-in lever, and hydraulic fluid feed elastic hoses. Extra drive axle is mounted by means of welded thrust angles 6 on frame 5 between wheeled tractor front and rear axles perpendicular to tractor motion vector, and is spring-loaded by vertical power hydraulic cylinders. Pressure cylinder mechanism consists of hydraulic cylinders 7 and pressure springs 8 and is mounted on frame by means of welded thrust angles. Extra axle is coupled by propeller shaft 9 with transfer gear case 10. Transfer gear box is coupled by drive lines 11, 12 with front axle reduction gear and, via overrunning coupling 13, with p.t.o.-box. Extra axle is locked in horizontal plane tractor frame by two torque arms 2.
EFFECT: higher cross-country capacity.
2 dwg
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