Low-cost high-precision hydraulic synchronizing system suitable for extra-heavy load

The invention discloses a high-precision hydraulic synchronizing system for an extra-heavy tipping platform. The high-precision hydraulic synchronizing system comprises an oil tank, a hydraulic power module, a hydraulic proportional speed regulation module and a plurality of hydraulic execution elements, according to the hydraulic synchronous system, a digital synchronous motor and a displacement sensor are adopted to form a hydraulic cylinder synchronous control system, an electro-hydraulic proportional valve and a tilt angle sensor are adopted to form a speed control system, and the hydraulic synchronous control system adopts a flow bypass active adjusting function on the basis of motor volume synchronization. During operation, displacement of each hydraulic executive component is detected, calculation and comparison are carried out, the hydraulic executive components exceeding errors are adjusted to eliminate synchronization errors of the different hydraulic executive components, and a speed control system