Blade leading edge protection structure and marine propeller blade

The invention discloses a blade leading edge protection structure and a marine propeller blade, and relates to the technical field of propellers, the blade leading edge protection structure comprises a blade sub-assembly, an inner edge wrapping layer, a leading edge protection sheet and a nickel wrapping edge, a blade tip of the blade sub-assembly is chamfered, a groove is formed in the leading edge of the blade sub-assembly, the inner edge wrapping layer is located in the groove, the nickel wrapping edge wraps the fillet of the blade tip, and the inner edge wrapping layer is located in the groove. And the front edge protection sheet is wrapped on the periphery of the inner edge covering layer except for the blade tip. The service life of the propeller can be prolonged, and the use safety of the propeller can be improved. 本发明公开了一种桨叶前缘防护结构和船用螺旋桨桨叶，涉及螺旋桨技术领域，包括桨叶分组件、内包边层、前缘保护片和镍包边，桨叶分组件的桨尖处倒圆角，桨叶分组件的前缘设有凹槽，内包边层位于凹槽内，且镍包边包裹于桨尖的圆角处，并位于内包边层外周，前缘保护片包裹于除桨尖处的内包边层的外周。本发明能够提高螺旋桨的使用寿命和使用安全性。