Sudden-coal-falling-prevention coal supply device for main inclined shaft

The utility model particularly provides a sudden-coal-falling-prevention coal supply device for a main inclined shaft. The problems that potential safety hazards are caused and the main inclined shaft breaks down and can not normally conduct production when sudden coal falling happens to an existing loading point are solved. An insertion plate is inserted to the side wall of a coal outlet pipe of a coal feeding machine and connected with a push-pull oil cylinder connected with the top of the main inclined shaft. A row of coal sealing steel needles which are distributed at intervals are inserted in the portions, below the insertion plate, of the side wall of the coal outlet pipe. An escape platform extending to the inlet of the main inclined shaft is arranged on an operation platform. The sudden-coal-falling-prevention coal supply device is reasonable and reliable in structural design, the effective safety protection is conducted, the raw coal transportation capacity is improved, the service life is obviously prolonged, and the maintenance amount is obviously decreased; meanwhile, the effective protection is conducted for other potential safety hazards caused by sudden coal falling.