Mobile crusher system

Claim 1

In a mobile crusher system for use in a stone quarry or in strip ore or coal mining having a supporting framework which holds at least one crusher, which system can be lifted and relocated in accordance with an advance in the removal of material by any one of a class of transport mechanisms, including a walking-leg system, an exendable track-laying system and a wheel undercarriage system; said crusher system further having at least one loading device which is associated with at least one crusher, a receiving hopper for loose material delivered by freely transporting loading machines such as wheel loaders or excavators, and a conveyor which feeds the loose material to the crusher by one of a class of transfer hoppers including a direct feed hopper and a hopper incorporating a screening system; the improvement wherein said crusher system further comprises a vertical pivot, said loading device being rotatably mounted on the supporting framework by said vertical pivot to be swingable around a vertical axis; a horizontal pivot located in the region of a dishcarge from said loading device, said loading device being mounted further to said framework by said horizontal pivot, and being swingable around a horizontal axis located in the region of discharge; a locking device, and wherein said loading device can be fixed in a transport position on the supporting framework by means of said locking device; said vertical pivot includes surface contact means affixed to said supporting framework for supporting said loading device during a swinging of said loading device; and said surface contact means includes a rolling surface.