Plow chains up to 38 mm can be used, allowing installations up to 2 × 400 kW (2 × 540 hp). The plow guide has a maximum height to withstand the reactionary forces produced during the cutting process, yet it does not hinder coal flow during the loading process. The upper plow guide can be opened for quick and easy access to both the top and bottom chains for maintenance. Proven design and geometry, in conjunction with high-strength steel and optimized material properties, combine to ensure minimum wear for maximum life. Both gobside and face side pan connectors have a breaking strength of up to 3000 kN (330 tons), depending on the line pan being used. Maximum cutting depth at high plow speeds provides high productivity. Every point of contact between plow body and plow guide is designed as a wear part, again to facilitate maintenance.
The plow body can also be adapted to smaller variations in seam height by using a bit turret that is built into the plow body. The turret carries the top bits of the plow body and can be precisely raised or lowered up to 300 mm (12 in) by means of a worm gear that is accessible from the gobside. Typically, the single gliding plow body is used, which is attached to the bottom chain. For special applications, there is also the double-plow or triple-plow body, which separates loading and cutting coal streams for very soft coal in thin seams.
PF line pans form the powerful backbone of the entire conveyor system. The pioneering conveyor technology and extremely rugged pan design have been subjected to extensive testing.
Two configurations are possible: A control in each shield (typically used) or one control shared by three shields in cases where fewer shield functions are required. The VCU (Visualization & Control Unit) not only controls the entire longwall, but also visualizes face operations on a graphic display, including position, actual coal load on the AFC (through AFC power consumption), shield position, leg pressure, stroke and plow position. The VCU provides a face-wide network and allows remote maintenance of shield components as well as data recording and transfer of data to the surface.
When you invest in Cat equipment, you invest in productivity. Our global service and support packages include field service, repairs, overhauls and superior-quality OEM parts, ensuring the best long-term return on investment. Our goal is to constantly maximize customer productivity. We achieve this by remaining on the cutting edge of mining technology, providing customers with the best equipment with the lowest life-cycle costs. Cat Global Customer Service ensures that your mining equipment remains a highly productive asset.