FIELD: mechanical engineering. SUBSTANCE: device is used for shifting gear in reversing the driving shaft keeping the direction of rotation of the driven shaft constant and has housing, driving shaft, major and two additional driven shafts of which the major one and one of the additional shafts are made up as a tube, central bearing shaft mounted inside one of the additional driven shafts, seven free-wheel clutches, and major and two additional three-link gear conical transmissions. The second additional driven shaft is mounted inside the major driven shaft. The major three-link gear conical transmission serves for connection of the driving shaft with the additional driven shaft. The second additional three-link gear conical transmission serves for connection of the driving shaft with the central bearing shaft. The first major free-wheel clutch connects the central gear of the major three-link gear conical transmission with the major driven shaft. The second major free-wheel clutch connects the second central gear of the major three-link gear conical transmission with the major driven shaft. One of the additional free-wheel clutches connects the first central gear of the additional three-link gear conical transmission with the additional driven shaft. The second additional free-wheel clutch connects the second central gear of the additional three-link gear conical transmission with the first additional driven shaft. The fifth free-wheel clutch interconnects the additional driven shafts. The sixth free-wheel clutch connects the third central gear with the central supporting shaft. The end of the central supporting shaft is mounted in the axial opening of the first central gear of the major three-link gear conical transmission through the seventh free-wheel clutch. EFFECT: improved design. 1 dwg
