Wear -resistant structure for earth pressure balance shield machine screw machine

The utility model belongs to the technical field of the shield constructs the machine, concretely relates to wear -resistant structure for earth pressure balance shield machine screw machine. A wear -resistant structure for earth pressure balance shield machine screw machine who provides, the screw machine fore -end set up in the excavation storehouse of earth pressure balance shield machine frontend, screw machine have the center pin with the welding at the epaxial helical blade in center, wear -resistant structure setting wear -resisting piece on the disc I outside helical blade has, its characterized in that: wear -resistant structure the wear -resisting piece of inlaying at the helical blade front end II still has, the helical blade front end has the recess that is used for inlaying wear -resisting piece II, wear -resisting piece II be located the recess in to the welding correspond wear -resisting piece I and the center pin between. The utility model discloses effectual wearing and tearing that prevent h