Power generation device following up spindle of propeller

Abstract

The invention relates to a power generation device following up a spindle of a propeller and belongs to the field of propeller monitoring and piezoelectric generation. First fixed magnets and a bearing are embedded on a bearing seat, the spindle of the propeller is mounted on the bearing seat through the bearing, a first limit ring, a piezoelectric transducer and a second limit ring are sequentially mounted on a spline of the spindle, a magnet frame is fixed on the side wall of the bearing seat, second fixed magnets are embedded on the inner side of the bottom end of the magnet frame, magnetic poles of each two adjacent second fixed magnets are opposite in direction, and the first fixed magnets and the second fixed magnets are the same in number and are mounted with like poles opposite. The power generation device following up the spindle of the propeller has the advantages that the piezoelectric transducer in rotation is forced to be in bending deformation axially by the aid of the convex curved surfaces of the limit rings and under the action of magnetic force coupling, deformation and power generation are unaffected by the rotation state, and power generation can be achieved when the spindle rotates at a uniform speed and at a high speed; and all point stress is equal when the piezoelectric transducer is in bending deformation.

Description

technical field [0001] The invention belongs to the technical fields of propeller health monitoring and piezoelectric power generation, and in particular relates to a power generation device that follows a propeller main shaft so as to provide real-time power supply for a propeller health monitoring system. Background technique [0002] Propellers are the core components of aircraft and ship power systems. Excessive wear or damage to propeller blades, shafts, and bearings will directly affect the safe driving of aircraft and ships, and will cause devastating air or shipwrecks in severe cases. In the past, the health of key operating components such as propeller blades, shafts, and bearings was guaranteed by regular maintenance and overhaul, which not only had a long period and high cost, but also affected the normal operation of aircraft and ships. Therefore, online health monitoring and fault diagnosis of propellers have been proposed at home and abroad, so as to improve re...

AI Technical Summary

Problems solved by technology

However, in practice, due to the inability to provide reliable, sufficient, and convenient power supply for the monitoring system that follows the above-mentioned rotating components, this ideal contact online monitoring and fault diagnosis scheme has not been widely used.

Although the rotary electromagnetic generator is very mature and has been widely used, it is difficult to integrate with the rotating propeller shaft due to its complex structure, relatively large volume and weight

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