METHOD FOR INCREASING TRACTION CLASS OF TRACTOR OR ROAD CONSTRUCTION MACHINE ON CHASSIS THEREOF AND DEVICE FOR IMPLEMENTATION THEREOF (EMBODIMENTS) Russian patent published in 2021 - IPC B60K17/12 B60K17/08 B60K6/20 F16H47/07 

FIELD: machine building.

SUBSTANCE: group of inventions relates to a method of increasing traction class of a tractor or road construction machine on its chassis. On a traction class A basic unit, a power plant (PP) is replaced with a plant with additional power ΔN ≥ 0 and torque ΔM > 0, as well as change in transmission. Gearbox corresponds to maximum torque M_A of traction class A. Transmission of additional power ΔN and additional moment ΔM is gearbox bypass (6) by parallel flow, with subsequent summation to drive link (13) of device propulsor. First embodiment of the device for implementation of the described method contains PP (1) with required power N_B and torque M_B of traction class B device and transmission with gearbox (6). Before gearbox (6) three-link differential mechanism (DM, 2) is installed. First input link (3) of DM (2) is connected to PP (1). Second link (4) of DM (2) is connected to the input link of gearbox (6) with the possibility of transmitting power to N_A inclusively. Third output link (5) - with input link of additional transmission (ΔN), parallel to gearbox (6), with possibility of transmitting power to ΔN inclusive. Provided is a summing mechanism (SM, 8). First (9) and second (10) links of SM (8) are connected to output links (X) of gearbox (6) and additional branch of transmission (7), and third output link (11) is connected to transmission elements. Second embodiment of the device for implementation of the described method contains power plant with required power N_B. Power plant of device of traction class B is made combined of at least two power plants (PP). One PP of basic, with maximum power N_A, is connected to input link of gearbox with possibility of transfer through last power to N_A. Other additional, extra power, up to ΔN = N_B - N_A inclusive is connected to input link of additional transmission branch. SM is provided, first and second input links of which are connected with output links of gearbox and additional branch of transmission. Third link of SM is connected with transmission elements.

EFFECT: higher degree of unification and wider choice of design options.

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