Hydraulic pressure multi-row link-plate type cold pipe bending machine

The invention discloses a hydraulic pressure multi-row link-plate type cold pipe bending machine. The hydraulic pressure multi-row link-plate type cold pipe bending machine is a cold bending device, wherein the diameter of the cold bending device is less than that of a steel pipe, and the diameter phi of the steel pipe is 219mm. The cold bending, namely, the steel pipe is in a state without application of heating, and a straight pipe is bended to a bending pipe which meets the requirement of various designed angles. Hydraulic transmission is adopted by the device, and a main shaft drive of the device is chain drive. Due to the fact that strength of extension of a common chain is low, twisting moment produced by the steel pipe bending cannot be met, a chain structure is formed by connecting the multi-row small link plate and a hinge pin. The structure has strong carrying capacity, and is solid,durable and not easy to damage. The hydraulic pressure multi-row-link-plate-type cold pipe bending machine is simple t