CONTROL SYSTEM OF POWER TAKEOFF REAR SHAFT DRIVE WITH PLANETARY REDUCTION GEAR OF SELF-PROPELLED VEHICLE Russian patent published in 1998 - IPC

FIELD: mechanical engineering; control systems of self-propelled power unit working equipment; transmission of engine power to machine working tools. SUBSTANCE: system uses gearbox 1 of power unit and gearbox lever 2 and has additionally rocking frame 3 with cross slot 4 installed in gearbox above sliders 5 with slots 6 to make frame 3 turn through certain angle on axle 7, when any of gears is shifted in, making spool 14 rigidly coupled with frame 3 and having common axle of rotation with spool 8, turn. Bypass longitudinal channels 16 and 17 not connected to each other and to axial channel 15 are made on surface of spool 14. Dimensions and relative positions of channels are such that channel 16 can connect main lines 22 and 23, and channel 17 can connect main lines 23 and 24 with drain main line 26. Main line 23 is connected with slave cylinder 27 of carrier, and housing of distributor 9 is coupled with slave cylinder 33 engaging with brake pulley 38 of sun gear 42. EFFECT: provision of automatic cutoff of transmission of torque to power takeoff shaft extension when tractor comes to stop and thus preventing gripping of user's clothes by noncovered members of propeller shaft. 2 cl, 3 dwg