METHOD FOR SYNCHRONIZING THE MOVEMENT OF OUTPUT LINKS OF SEVERAL VOLUMETRIC HYDRO MOTORS Russian patent published in 2022 - IPC F15B11/22 

FIELD: hydroficated equipment.

SUBSTANCE: invention relates to hydroficated equipment used in various branches of engineering, in particular in plate bending rolls for roll control, in drives of presses, tunneling shields, lifting and other machines and mechanisms, the operating conditions of which require synchronous movement of the output links of hydraulic motors. Method for synchronizing the movement of the output links of several volumetric hydraulic motors 1, 2, 3, 4, to each of which the working fluid is supplied from a common hydraulic power source 26 through an individual throttling hydraulic valve with proportional electrical control, respectively 21, 22, 23, 24, consisting in the fact that which increase the flow rate of the working fluid entering the pressure chamber of the hydraulic motor, the output link of which lags behind in its movement, and reduce the flow rate of the working fluid entering the pressure chamber of the hydraulic motor, the output link of which is ahead in its movement, for which control signals are sent to the electric control units of the hydraulic distributors , generated by the controller 30, based on the condition of providing in the pressure hydraulic line 25 of the hydraulic power source 26 a pressure value exceeding the maximum pressure value in the pressure cavities of the hydraulic motors by a predetermined value necessary to solve the problems of regulating the speed of movement of the output links of the hydraulic motors, and the conditions for ensuring the total change in the flow rate of the working fluid entering the pressure cavities of the hydraulic motors, equal to zero in relation to the flow rate of the working fluid in the pressure hydraulic line of the hydraulic power source, based on: the values ​​of the initial and current coordinates of the output links of the hydraulic motors, the current the flow rate in the hydraulic pressure line of the hydraulic power source, the current pressure values ​​in the pressure chambers of the hydraulic motors and the experimentally established relationship between the values ​​of the control signal applied to the electrical control unit of the hydraulic valve and the conductivity coefficient of its pressure working window.

EFFECT: ensuring stable operation of the synchronization system for several volumetric hydraulic motors when using a hydraulic power source, the pressure in the pressure hydraulic line of which is determined by the load.

1 cl, 1 dwg