METHOD OF ENERGY RECOVERY OF THE EXCAVATOR ROTARY PLATFORM HYDRAULIC DRIVE Russian patent published in 2017 - IPC F15B21/14 E02F9/22 

FIELD: electricity.

SUBSTANCE: in the method, the software/logic controller, through the sensor system, reads the increase in peak values of dynamic loads - torque, rotation angle, angular acceleration and in the deviation from the set torque values puts into use the electric recuperator. When the critical loads are exceeded, the electric recuperator brakes the platform and operates as a generator, converting mechanical and hydraulic energy into electrical energy, accumulating some of the mechanical energy in the battery, and the other part - by redirecting it to the on-board network. When the electric recuperator operates, the hydraulic system operates at a reduced pressure with lower pump and hydraulic motor powers, the dynamic and speed characteristics are controlled by the electric recuperator by changing the torque on the shaft of the drive gear. In the process of the electric recuperator operation, the actuators of the drive synchronously redistribute the power load over the contact surfaces of the kinematic pairs, ensuring a reduction in the concentration of internal voltages on a limited contact area per unit of work time.

EFFECT: reduction of energy losses.

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