Longwall Systems
Joy Global designs and manufactures the major elements of modern, high production longwall systems and provides the integrated approach necessary for the productivity gains required for success in underground mining. The major elements of a Joy longwall system are a shearing machine, an armored face conveyor (AFC), roof supports, stageloader, crusher and mobile belt tailpiece. Joy Global manufactures these individual elements and provides professional project management capability to incorporate them into an integrated system and deliver that system on time, to specification and on budget.
Joy Global built the first all electric multi-motor shearing machine in the world in 1975. This innovation brought a new level of reliability and maintainability to the machine.
Joy Global roof supports, for high capacity longwalls, are custom designed to meet exacting cycle and operating requirements.
The JOY AFC design uses cast steel sigma sections with exacting tolerances. This casting technology eliminates the weld fabrication of clevis and pan connections, which are inherently unreliable.
This is an AFC mounted hydraulically propelled roofbolting machine platform specifically designed for longwall face bolting during salvage or installation or during severe geological conditions.