Single-toothed hob with wear-resistant reinforcing collar

Abstract

The utility model relates to shield cutter technology field especially, more particularly to a single blade cutter with wear -resisting reinforcing cutter ring, including cutter shaft and the bearing of setting in the periphery of cutter shaft, the periphery of bearing is provided with the cutter hub, the periphery of cutter hub is provided with cutter ring, the inside of cutter ring is set up and is opened multiple groups of closed cavity, multiple groups of closed cavity around cutter ring's rotation axis even circumferential arrangement, the inside of closed cavity is filled with loose wear -resistant particle, and the remaining space in closed cavity is filled with liquid pressure transmission medium, the utility model provides the buffer space for cutter ring material thermal deformation through closed cavity structure, and the pressure transmission medium in closed cavity expands under heat when operating, and the centrifugal force that cutter ring operation rotates produces can further drive pressure transmission medium and wear -resistant particle to the outward movement, forms the significant pressure -boosting effect in closed cavity, and passes to the outside through cutter ring material, can effectively offset the tensile stress component that the external load produces.

Images