Patent ID: 7429164

Claim:
A turbine moving blade comprising: a blade portion extending from a basal portion to the tip of a moving blade; a blade root portion formed at the basal portion of the blade portion and engaged with a corresponding disk groove of a turbine rotor on a one-by-one basis; and an integral cover formed at the tip of the blade portion integrally with the blade portion, wherein the integral cover has at least a pair of pressure and suction sloped surfaces inclined relative to a direction of a rotational axis of a turbine, and a pitch between the suction sloped surface and pressure sloped surface of the integral cover in a circumferential direction before assembly is larger than a geometric pitch, said geometric pitch being obtained by dividing the circumference at a radial position of the integral cover installation by the number of blades over the entire circumference after assembly, so that an elastic restoring force of the moving blade torsionally deformed at the time of installation of the moving blade by pressing the moving blade along the circumferential direction of the turbine for assembly, is restrained by bringing the suction sloped surface of the integral cover and a pressure sloped surface of an adjacent integral cover into contact; and wherein the integral cover is formed so that, as viewed from a radial direction, a normal of the suction sloped surface passing through a mid point on a contact surface on the suction sloped surface in a direction of the sloped surface does not cross the blade portion.