Stepless variable-frequency directional hydraulic vibratory roller

A stepless variable-frequency directional hydraulic vibratory roller belongs to the field of machinery and comprises a multi-loop synchronous vibration rotary valve and a two-mass hydraulic vibration system, the two-mass hydraulic vibration system comprises two vibrators and a vibration steel wheel, the vibration steel wheel comprises a steel cylinder, two end discs and a main shaft, the two end discs are arranged in an inner hole of the cylinder, and the main shaft is arranged in the inner hole of the cylinder. A main shaft is mounted in a center hole of the end disc; a group of vibrating bearings and a bearing seat are arranged on the overhanging shaft sections at the two ends of the main shaft; the vibrator is sleeved outside the bearing seat; the vibrator comprises a vibrator body; a square flange is arranged at the top of the vibrator body, and a guide groove is formed in the lower part of the vibrator body; the vibration oil cylinder is arranged between the vibration steel wheel and the vibrator; a pist