Energy accumulator suspension oil cylinder, oil-gas balance suspension system and vehicle

An energy accumulator suspension oil cylinder comprises a cylinder barrel and two piston rod mechanisms, the two piston rod mechanisms are arranged at the upper end and the lower end of the cylinder barrel respectively in a sliding mode, and a first oil cavity is formed between the two piston rod mechanisms. Wherein at least one piston rod mechanism is a piston rod mechanism provided with a gas energy storage part. The utility model further provides an oil-gas balance suspension system comprising the energy accumulator suspension oil cylinder and a vehicle. The oil-gas balanced suspension system comprises two energy accumulator suspension oil cylinders and an oil pipe, and first oil cavities in the two energy accumulator suspension oil cylinders are communicated through the oil pipe. According to the oil-gas balance suspension system and the vehicle adopting the energy accumulator suspension oil cylinder, overload of a single axle can be effectively avoided, the smoothness and comfort of the vehicle in the no