A Linkage Mechanism Drives a Flexible Imitation Tail Fin Propeller

Abstract

The invention discloses a connecting rod mechanism driven flexible tail fin imitating propeller which comprises a side protection plate, a support, an anechoic tile, flexible tail fin imitating blades, a push rod, a connecting rod seat and connecting rods. Variable-acceleration linear reciprocating motion of the push rod is finally evolved into swing of the flexible tail fin imitating blades through the connecting rods which are symmetrically distributed about the symmetrical surface of the first flexible tail fin imitating blade and the second flexible tail fin imitating blade. The flexible deformation rule of the flexible tail fin imitating blades can be changed by adjusting the hinged positions of spherical hinges at the tail ends of the connecting rods and the flexible tail fin imitating blades, and multiple bionic swimming modes are achieved. During specific implementation, multiple propellers can be arranged in series or side by side by simulating a shoal swimming mode; and the propeller has the advantages of low noise, high propulsion efficiency, stable propulsion and the like.

Description

technical field [0001] The invention belongs to the technical field of bionic propellers, in particular to a flexible tail fin propeller driven by a link mechanism. Background technique [0002] The propeller propulsion device mainly used in the existing propeller has the disadvantages of high noise and wake vortex, low overall efficiency (usually less than 45%), and poor maneuverability. The huge noise and wake vortex make it impossible for the underwater vehicle to hide better; the lack of maneuverability makes it inconvenient for the underwater vehicle to drive in a complex seabed environment; the low overall efficiency makes the speed of the underwater vehicle a problem. The propeller can effectively replace the traditional propeller propulsion mode, and has far-reaching significance in the fields of ocean exploration and national defense, especially in the improvement of the concealed navigation and endurance of underwater vehicles. [0003] Chinese invention patent CN...

AI Technical Summary

Problems solved by technology

[0003] Chinese invention patent CN201510665821.1 discloses a two-degree-of-freedom bionic tail fin, which includes four parts: the blade frame groove, the blade frame, the blade and the transmission gear. Without any protection and noise reduction devices on the side, it is difficult to sneak under water

[0004] Chinese utility model patent CN201420564908.0 discloses an imitation tail fin propeller, including a left gear transmission part, a right gear transmission part, a central planetary gear train part, a total input shaft, a bearing, a connecting rod, a tail fin connecting rod and a tail fin, and its structure Compact, but the gear used in this structure has the problems of high noise and strict working environment requirements, so it is not suitable for underwater stealth and submersion

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