COMBINE FOR MINING MINERAL RESOURCES BY UNDERGROUND METHOD ON THIN SEAMS Russian patent published in 1995 - IPC

FIELD: mining mechanical engineering. SUBSTANCE: combine has case with actuating tools. The case is mounted onto the frame of face conveyer for height control by means of supports connected with the case by hinges, supports are made in form of shanks. Combine also has chain-free feed system in form of traction sprockets which are mounted onto guiding chain rack provided with a drive. Each drive 7 is mounted onto chain rack by means of support and is connected with support of the combine by hinges. This connection is made in form of guiding axis 12 with hole 21 and yoke 14 which is mounted in recess of case of the combine. Yoke is made with lug 15 and hole 19 for placing shank; hole 19 has a shape of an oval horizontal cross-section. Hinge connection of drives 7 of chain-free feed system with supports of the combine at horizontal and vertical planes permits to reduce rigid base of case of the combine accomplished with constant engagement of traction sprockets with chain rack. EFFECT: improved efficiency of operation. 4 dwg