MULTIPLE-STAGE REVERSING POWER SHIFT TRANSMISSION Russian patent published in 2000 - IPC

FIELD: mechanical engineering, in particular, equipment used in machines employed in construction industry. SUBSTANCE: each countershaft of multiple-stage reversing power shift transmission carries gear shift coupling, one loosely mounted gear and up to two fixed gears. Gears form drive gear block, distributing gear bock and driven gear chain. Different versions of transmissions having similar arrangement, but different number of stages and center-to-center distances are presented. Transmission has compact construction, in particular, reduced constructional axial length. EFFECT: increased efficiency, simplified and compact construction, enhanced reliability in operation. 8 cl, 6 dwg