FIELD: transportation.
SUBSTANCE: gearbox switched under load comprises the first and second transmission units (2; 3). In every transmission unit possibility is provided to install one gear from the first or accordingly the second set of gears corresponding to every gear unit (2; 3) between inlet shaft (4; 5) and outlet shaft (6; 7) of gear unit (2; 3). Gearbox has non-slipping engagement system (28, 30; 29, 31) between every gear unit (2; 3) and common driving shaft (10) of gear box switched under load. Engagement system provides for possibility to engage inlet shaft (4; 5) of gear unit (2, 3) selectively directly or via common engagement (11) to driving shaft that allows for slippage.
EFFECT: compactness and efficiency in manufacture of stated gear box.
18 cl, 9 dwg
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