The invention discloses an environment-friendly comprehensive
crusher which comprises a working
assembly. The working
assembly is composed of a first motor, a first speed
reducer, a mounting base, a first roller, a material conveying belt, a first
hydraulic cylinder, a sliding plate, a second
hydraulic cylinder, a lifting frame, a second motor, a second speed
reducer, a second roller, a
metal conveying belt, an
electromagnet, a smashing bin, a third motor, a third speed
reducer, a smashing roller and a discharging port. According to the material conveying device, ferromagnetic impurities in materials can be removed in the material conveying process by using the working
assembly, equipment is prevented from being damaged by the ferromagnetic impurities, and safety is improved; by using the auxiliary assembly, the phenomenon of improper position of the materials in the transportation process can be reduced, and the stability of the materials entering the crushing bin is improved; by using the
cutting assembly, overlong materials can be decomposed, the risk that the
tail ends of the overlong materials move when the overlong materials are crushed is reduced, parts with the
decomposition function can be flexibly stored, and the use experience of a user is improved.