Metallic waste disposal device for industrial machinery

A metallic waste disposal device for industrial machinery for disposing of metallic waste produced during tear-down of a building, including a working unit attachable to a distal end of a movable arm of a construction machine, said working unit comprising,

• a first frame having a bottom surface with a magnetic absorbing area and a fixed blade,
• a crushing arm pivotally attached to said first frame for movement away from and toward said fixed blade,
• a hydraulic cylinder connected to said crushing arm for moving said crushing arm relative to the first frame,
• a permanent magnet assembly movably housed in said first frame, and installed close to said bottom surface, and
• connecting means joined to said crushing arm and said permanent magnet assembly for moving said permanent magnet assembly in synchronization with the movement of the crushing arm in relation to said first frame from said magnetic absorbing area on said bottom surface to a predetermined position away from said magnetic absorbing area that eliminates magnetic absorption at said bottom surface.

A metallic waste disposal device for industrial machinery for disposing of metallic waste produced during tear-down of a building, including a working unit attachable to a distal end of a movable arm of a construction machine, said working unit comprising,

• a first frame having a bottom surface and a fixed blade,
• a crushing arm pivotally attached to said first frame for movement away from and toward said fixed blade,
• a hydraulic cylinder connected to said crushing arm for moving said crushing arm relative to said first frame,
• a permanent magnet assembly in said first frame, including two magnet groups with NS poles thereof reversed from each other and fixed on a base, said magnetic groups being spaced from each other and enclosed by a top magnetic absorbing member and a bottom magnetic absorbing member, a movable intermediate magnetic absorbing member being provided between said two magnet groups for up and down movement in the space between said magnet groups, said movable intermediate magnetic absorbing member having magnetic absorbing sections and a nonmagnetic section, said intermediate magnetic absorbing member having a first retracted position from said space between said magnet groups to establish magnetic absorption at said bottom surface, and a second protracted position in said space wherein the magnetic absorbing sections of said movable member align with the top and bottom magnetic absorbing members of said magnet groups to eliminate magnetic absorption at said bottom surface.