Electro-hydraulic servo driving unit and application thereof

The invention discloses an electro-hydraulic servo driving unit, and belongs to the field of hydraulic driving. The electro-hydraulic servo driving unit comprises a servo motor, a first meshing gear pump, a second meshing gear pump, a liquid filling oil tank, a driving cylinder, a first one-way valve, a first overflow valve, a first pressure sensor, a second one-way valve, a second overflow valve and a second pressure sensor, the servo motor is simultaneously communicated with the first internal gear pump and the second internal gear pump; one end of the first internal gear pump is communicated with a driving cylinder rodless cavity of the driving cylinder through an oil pipe, and the other end of the first internal gear pump is communicated with the liquid filling oil tank through an oil pipe; one end of the second internal gear pump is communicated with a driving cylinder rod cavity of the driving cylinder through an oil pipe, and the other end of the second internal gear pump is communicated with the liqui