CATERPILLAR TRACTOR UNDERFRAME Russian patent published in 2001 - IPC

FIELD: agricultural engineering. SUBSTANCE: underframe has carcass, hitching systems, front beam and drive axle assembly which are pivotally connected to frame carcass. Rear part of carcass is communicated with drive axle assembly through shaft positioned in plane of symmetry of tractor underframe and disposed in vertical slot of eyelet rigidly fixed on carcass. Underframe has suspender disposed between carcass and drive axle assembly. Such construction allows them to oscillate in parallel with and transverse to carcass, with carcass retaining its vertical position. EFFECT: simplified construction and increased efficiency. 3 cl, 5 dwg