FIELD: machine building.
SUBSTANCE: invention relates to power gear-shifting transmission for power technology shift and construction machine. Transmission includes clutch shaft assembly (1). Clutch shaft assembly (1) comprises clutch shaft (11), body gear (12) located on clutch shaft (11), clutch plate (13) of engagement located inside the body gears (12), and shifting piston (14) located at one end of clutch plate (13). Shifting piston (14) is manufactured to promote the introduction of a clean hydraulic medium, introduced through the liquid supply channel (3) for supply of fluid medium. Pure hydraulic substance is supplied by hydraulic system (2). Engineering machinery includes transmission to power gear shifting.
EFFECT: stable gear shifting and long service life is provided.
13 cl, 4 dwg
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