WHEELED VEHICLE WITH HYDRAULIC DRIVE Russian patent published in 2005 - IPC

FIELD: transport engineering.

SUBSTANCE: invention relates to hydraulic transmissions of bicycles with pump and motors of different tires. Hydraulic motor is made in form of rotor hydraulic motor 1. Hydraulic main line has pressure part 2 and suction part 3 with piston pump 4 placed in between. Piston 5 is provided with bypass hole and mushroom head valve 10 to overlap said hole. Mushroom-head valve 10 is coupled with rod 6 of drive and is placed in chamber 11 formed by L-shaped ribs 9. Horizontal parts of ribs 9 are connected with rear part of piston 5. Guides in form of holes 7, 8 for movement of rod 6 are formed in intersection of vertical parts of ribs 9 and in end face cover of pump. At working stroke to the left, mushroom-head valve 10 seats on saddle 12 of piston 5 which provides simultaneous getting of liquid along suction part 3 of hydraulic main line. At reverse idle stroke to the right, rod 6 pulls mushroom-head valve 10 from saddle to provide flow of liquid from suction space of pump 4 into delivery space.

EFFECT: provision of constant direction of motion of liquid for bringing to minimum power losses.

2 cl, 3 dwg