Swing oil cylinder with adjustable swing angle

The utility model relates to the technical field of hydraulic cylinders, in particular to a swing oil cylinder with an adjustable swing angle, which comprises an oil cylinder barrel and a limit cylinder barrel component, an oil cylinder piston and a piston rod are arranged in the oil cylinder barrel, the piston rod is connected with the oil cylinder piston through a helical tooth pair, and a rodless cavity oil port and a rod cavity oil port are arranged on the oil cylinder barrel; the limiting cylinder barrel assembly is connected with the oil cylinder barrel, a limiting oil cavity is formed in the limiting cylinder barrel assembly, a limiting piston is arranged in the limiting oil cavity, and the limiting piston slides in the limiting oil cavity and can abut against the oil cylinder piston so as to adjust the swing angle of the piston rod. According to the swing oil cylinder with the adjustable swing angle, the position of the limiting piston is changed by sliding the limiting piston in the limiting oil cavi