Cone crusher mantle structure with thread sealing

The utility model relates to a cone crusher examines and repair the field, discloses a cone crusher mantle structure with thread sealing, and it includes nut in main shaft, main shaft bush, mantle lock nut and the main shaft, the main shaft bush lies in main shaft upper portion, the nut lies in the main shaft periphery of main shaft bush below in the main shaft, the interior nut periphery of main shaft has the screw thread with mantle lock nut looks adaptation, said mantle lock nut connects nut periphery in the main shaft, and the top surface of nut flushes in mantle lock nut's top surface and the main shaft, mantle lock nut top surface has flexible sealing spare with the junction cover of the interior nut top surface of main shaft, flexible sealing spare coats and is stamped sealed steel loop. This structure adopts the rigid mode that combines together with flexible sealing that blocks, realizes the high-efficient sealed of the interior nut junction of mantle lock nut and main shaft, prevents effectively that the dust from getting into.