A positioning tool and method for the inner oil pipe of the controllable pitch propeller shaft

Abstract

The invention discloses a locating tool and method for a shaft inner oil pipe of a controllable-pitch propeller and belongs to the field of mechanical assembly. The locating tool comprises a locatingconnector, a locating bolt and locating screws. The locating connector comprises a body, an inner oil pipe hole, an outer oil pipe hole and a locating hole. The outer oil pipe hole is arranged at oneend of the body. The outer oil pipe hole is used for being coaxially connected with the outer circumferential wall of an outer oil pipe in a threaded manner. The inner oil pipe hole is coaxially arranged on the bottom face of the outer oil pipe hole. The inner oil pipe hole is used for being coaxially connected with the outer peripheral wall of the inner oil pipe in a threaded manner. The distancebetween the bottom face of the inner oil pipe hole and the bottom face of the outer oil pipe hole is equal to the standard length difference between the inner oil pipe and the outer oil pipe. The locating hole is arranged at the other end of the body. The locating hole is coaxial with the inner oil pipe hole. A threaded end of the locating bolt is used for passing through the locating hole to becoaxially connected with the inner circumferential wall of the inner oil pipe in a threaded manner. One end of each locating screw is used for penetrating through the outer oil pipe and perpendicularly abuts against the outer wall of the inner oil pipe. The locating tool and method for the shaft inner oil pipe of the controllable-pitch propeller improve the assembly efficiency of the shaft inner oil pipe.

Description

technical field [0001] The invention belongs to the field of mechanical assembly, and in particular relates to a positioning tool and method for an inner oil pipe of a pitch control propeller shaft. Background technique [0002] The controllable pitch propeller is a ship propulsion device, which mainly includes an oil distributor, an oil pipe in the shaft and a propeller hub. The oil pipe in the shaft is located at the oil distributor and the propeller hub, and plays a connection role. The oil pipe in the shaft usually includes an inner oil pipe and an outer oil pipe, and the inner oil pipe is coaxially inserted into the outer oil pipe. [0003] When assembling the inner oil pipe of the shaft, it is necessary to ensure that the coaxiality between the inner oil pipe and the outer oil pipe, and the relative axial length difference between the two meet the design requirements. Now when assembling the oil pipe in the shaft, it is usually necessary to repeatedly measure and adj...

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