| 摘要 |
FIELD: transport engineering; wheeled tractors. ^ SUBSTANCE: proposed wheeled tractor has front and rear wheels, front and rear axles, gearbox and transfer case. Driven gears are installed in transfer case on rear-axle drive shaft for free rotation, and drive engagement mechanism has gear rims made on driven gears between which middle gear rim is arranged rigidly secured on rear-axle drive shaft, and toothed sleeve in constant meshing with gear rims of driven gears installed for engagement with middle gear rim and provided with ring groove on inner surface whose diameter and which exceed, respectively, diameter and width of middle gear rim. Front-axle drive shaft gear is constantly coupled with driving gears of transfer case. ^ EFFECT: provision of constant mechanical coupling of driving gears of transfer case and front axle, transmission of power to front wheels having better adhesion with ground. ^ 5 cl, 5 dwg |
