Buffering-adjustable swing hydraulic cylinder for electro-hydraulic actuator

The utility model discloses an adjustable buffer swing hydraulic cylinder for an electro-hydraulic actuator, which comprises a gear box, a gear with a key hole is arranged in the gear box, cylinder barrels are respectively mounted on two sides of the gear box, two pistons and a rack are arranged in each cylinder barrel, the two racks are meshed with the gear, oil holes are respectively arranged at two ends of each cylinder barrel, and the oil holes are communicated with the gear. Buffering sleeves are arranged at the bottoms of the two ends of an inner cavity of each cylinder barrel, buffering bosses are arranged at the outer ends of the two pistons in each cylinder barrel, a damping hole and a smooth flow hole are formed in each buffering sleeve, one end opening of each damping hole is located in the end face of the corresponding buffering sleeve, and the other end opening of each damping hole is connected with an oil hole through a pipeline with a one-way throttling valve. One end opening of the smooth flow