TRANSMISSION GEAR AND ITS FUNCTIONING METHOD Russian patent published in 2015 - IPC F16H47/02 F16H37/06 B60W10/02 B60W10/10 

FIELD: transport.

SUBSTANCE: invention relates to hydromechanical transmission gear for a transport vehicle. Transmission gear (10) includes structure (12), the first input working element (15) connected to prime engine (13), and the second input working element (45) capable of being actuated due to functioning of hydraulic drive motor (40). Transmission gear (10) is effective for transmission of the drive from the first input working element (15) to the output working element (25) in a mechanical drive mode and from the second input working element (45) to output working element (25) in a hydrostatic drive mode. The first input working element (15) provides for supplied power of the drive from prime engine (13) to kinematic chain (36) of a mechanical drive, which includes device (C) for selection of transmission ratio, and for the mechanical drive mode, device (C) for selection of the transmission ratio provides selection of one of the variety of alternative transmission ratios by bringing into engagement and/or disengagement of one device (24, 32; M3) of a clutch for gear shifting at the non-switched off engagement, and the second input working element (45) is connected through a drive outline to output working element (25). Besides, there is device (44) of a clutch for gear shifting at the non-switched off engagement between hydraulic drive motor (40) and the second input working element (45), which is in operation when the transmission gear is in the hydrostatic drive mode for transmission of the drive installed by means of functioning of hydraulic drive motor (40) to the second input working element (45).

EFFECT: higher reliability of a device.

12 cl, 2 dwg