Portable grinding/shredding/chipping system having manipulable track drive and other improvements

A portable grinding/shredding/chipping system comprising:

• a base frame supporting an engine and a rotor;
• the engine being coupled to the rotor for supplying rotational drive thereto;
• a grinding/shredding/chipping chamber, the rotor being accommodated and rotatable within the grinding/shredding/chipping chamber, wherein the grinding/shredding/chipping chamber has an anvil-screen combination which, in a use position, is located adjacent an exterior surface of the rotor so as to facilitate comminution of the feed material, and the anvil-screen combination is pivotable away from the rotor in an event that tramp metal passes between the rotor and the anvil-screen combination so as to avoid damage to components of the portable grinding/shredding/chipping system as well as assist with servicing of the rotor;
• a pair of opposed anvil-screen hydraulic cylinders axially aligned with respect to one another, wherein respective pistons of each of the respective anvil-screen hydraulic cylinders are biased toward one another by hydraulic fluid, a leading end of each one of the anvil-screen hydraulic cylinders supports a recess which supports a spherical member, while a mating side surface of each opposed side of the anvil-screen combination has a corresponding recess which is sized to matingly engage and receive the adjacent spherical member and sandwich the anvil-screen combination therebetween so as to maintain the anvil-screen combination in its engaged in-use position, located closely adjacent an exterior surface of the rotor;
• a feed conveyor being supported by the base frame for feeding feed material into the grinding/shredding/chipping chamber for comminution thereof;
• a feed roller cooperating with the feed conveyor to assist with feeding feed material into the grinding/shredding/chipping chamber;
• a discharge conveyor, communicating with the grinding/shredding/chipping chamber, for receiving comminuted material from the portable grinding/shredding/chipping system and discharging the comminuted material from the portable grinding/shredding/chipping system;
• and
• a drive track assembly comprising a framework supporting spaced apart and independently drivable first and second tracks which facilitate movement of the portable grinding/shredding/chipping system, and the framework being connected to the base frame;
• wherein a first section of the framework of the drive track assembly is coupled to the base frame by a pivotal connection which permits the framework to individually pivot relative to the base frame, and a second section of the framework and the base frame are connected to one another via spaced apart first and second hydraulic track cylinders, and the first and second hydraulic track cylinders facilitate changing an orientation of the drive track assembly, relative to the base frame, for altering the orientation of the portable grinding/shredding/chipping system relative to the drive track assembly.