Feeder Breaker Coal Mining is a new type of equipment for comprehensive mechanized mining face in open-pit mine. In recent years, with the large amount of open-pit mining, new requirements have been put forward for the technical performance and conveying capacity of equipment. In open-pit mining operations, coal seams are mainly broken and processed by explosives. At present, double-toothed roll crusher is the main method to break large and uneven coal blocks directly. The limitation of double-toothed roll crusher lies in the certain limitation of coal particle size and the yield is not easy to guarantee. And the crushed materials can only take vertical blanking, which puts forward new requirements for the fall between the crushing equipment and the lower transport equipment, and prevents the qualified materials from being crushed by the second collision. At present, the way is generally broken and then reprinted to the designated place by reprinting equipment, and the use of space on the whole site is also very large. The future development of crushing will be multi-functional, large-scale, large-scale development. At present, it is difficult to realize multi-function and quantitative integration of crushing equipment.
Our company has developed a new type of Feeder Breaker Coal Mining, including slit screen box of scraper conveyor, roller screen box of scraper conveyor, crushing box of scraper conveyor, scraper conveyor drive, scraper chain and single roll breaking unit: The scraper conveyer slit screen box includes slide plate, box side plate, box connecting beam, guide rail, upper cover plate, countersunk bolt, side lining plate and lower lining plate, the slide plate through the bolt and the lower end of the box side plate is fixed connected together, the upper cover plate and the upper end of the box side plate is also fixed connected together by bolts, The side lining plate and the bottom lining plate is fixed and connected together by countersunk head bolt, the slide plate, the box side plate and the upper cover plate are two sets, two sets of box side plate through the box connecting beam connected to form the main body of the screening box, the box connecting beam is provided with a guide rail, a plurality of guide rail laid on the box connecting beam to form a joint; The scraper conveyor roller type screening box includes steel plate butt box and roller screen, the roller screen comprises a plurality of roller groups, each roller group includes a first roller and a second roller, the first roller and a second roller cross into the steel plate butt box is arranged at both ends of the installation hole, the first roller and a second roller is arranged at both ends of the bearing seat, The bearing seat is connected and fixed together with the steel plate butt box through a bolt: one end of the first roller and the second roller is provided with a coupling, the first roller and the second roller respectively through the coupling and cycloidal needle wheel motor connected as an integrated structure; The crushing box body of the scraper conveyor consists of a steel plate butt box body in the side of the box and a roller screen combination connected; The single roll breaking unit is fixed on the upper plane of the scraper conveyor crushing box by fastening bolts. The single roll breaking unit comprises a single roll breaking, a single roll breaking drive motor, an active pulley, a driven pulley and a V-shaped belt. The active pulley is arranged on the shaft end of the single roll breaking drive motor, and the driven pulley is arranged on the shaft end of the single roll breaking. The active pulley is connected with the driven pulley through a V-shaped belt; The scraper chain comprises a ring chain, a scraper, a connecting ring and a positioning pin. The ring chain passes through the end of the scraper and is fixed through the positioning pin. The ring chain is connected through the connecting ring to form a ring. The scraper conveyor seam screening box and the scraper conveyor roller type screening box is connected with the scraper conveyor broken box, forming the main body of the whole Feeder Breaker Coal Mining, and then the scraper chain is laid at the bottom, through the scraper conveyor drive scraper chain rotation. We design this scheme to take a multifunctional scraper conveyor by increasing the width of the scraper conveyor crushing box plane structure connected to the platform, the single roll is located in the scraper conveyor crushing box plane, this structure in the scraper conveyor running material from the scraper conveyor tail into, through the scraper movement of the mixture evenly spread, The qualified materials in the mix are pre-treated in advance, along with the movement of the scraper will be the rest of the material into the roller screen and slit screen for the second step of processing, and then the scraper will transport large materials into the single roll break the unqualified large materials for crushing, through the single roll broken materials can be transferred by other equipment through the chute or directly unloaded. This scheme we designed the whole machine adopts modular design, each part adopts the way of high-strength bolt connection, easy to replace and maintenance, installation and disassembly is convenient, can greatly improve the production efficiency and maintenance efficiency. We design this program reasonable design, simple structure, convenient operation, can work in harsh environment, large throughput, and can be screened out qualified materials in advance to improve the crushing efficiency, can transport 1400~3000mm large materials, through a single roll broken, transportation, screening, crushing integration operation, easy to install and maintain, Can be widely used in coal, metallurgy, and other ground bulk material transportation, screening and crushing system operations.
