Four-shaft crusher

The invention relates to the technical field of crushing equipment, in particular to a four-shaft crusher which comprises a case, the interior of the case is hollow, a feeding port is formed in the top of the case, a discharging port is formed in the bottom of the case, and a crushing assembly for crushing materials and a rotating assembly for driving the crushing assembly to work are arranged on the case; the two crushing assemblies are located below the feeding port and distributed up and down, each crushing assembly comprises a first crushing roller and a second crushing roller which are rotationally arranged in the machine box, and the axis of the first crushing roller is parallel to the axis of the second crushing roller; and an adjusting piece for adjusting the axle distance between the first crushing roller and the second crushing roller is arranged on the case. The method has the effect of reducing the acquisition cost of crushing equipment. 本申请涉及破碎设备技术领域，尤其是涉及一种四轴破碎机，包括机箱，机箱内部中空且顶部开设有进料口、底部开设有排料口，机箱上