Vehicle composite transmission shaft and preparation method thereof

Abstract

The invention discloses a vehicle compound transmission shaft and a preparation method thereof. The vehicle compound transmission shaft comprises a fiber reinforced polymer (FRP) pipe, metal connecting pieces and reinforcement sleeves. The pipe walls of the two ends of the FRP pipe are uniformly provided with a plurality of through holes. The metal connecting pieces have the same outer diameter asthe inner diameter of the ends of the FRP pipe. The metal connecting pieces are annularly provided with a plurality of concave holes corresponding to the through holes in number and position. The twometal connecting pieces are coaxially connected to the two ends of the FRP pipe correspondingly and are fixed through pin shafts penetrating through the through holes and the concave holes. The reinforcement sleeves are connected to the ends of the FRP pipe in a sleeving mode and cover the pin shafts. According to the adopted braided pultrusion FRP pipe, the inner and outer walls are smooth, thethickness of the pipe wall is uniform, the dynamic balance performance is good during high-speed operating, the axial and circumferential strength and stiffness are high, the interlayer torsional strength is high, the preparation process is simple, and the overall reliability is high. Through the reinforcement sleeves, the strength defect of punched holes is overcome, external restraint is realized, and meanwhile, a workblank is prevented from being generated on the outer side of a center shaft in the using process.

Description

technical field [0001] The invention belongs to the technical field of production of automobile drive shafts, and in particular relates to a composite material drive shaft for vehicles and a preparation method thereof. Background technique [0002] The car transmission shaft is mainly used to transmit torque, and it is subjected to a large torque during work. The mechanical system is prone to resonance during operation. Resonance will cause loosening or fatigue damage of mechanical parts, resulting in noise and affecting the machining accuracy of the machine. [0003] The transmission shaft made of traditional metal has high density, poor wear resistance and corrosion resistance. However, the traditional composite transmission shaft adopts winding and pultrusion molding processes. For example, the Chinese patent with the publication number CN 104632861A discloses a method for preparing a transmission shaft by heating and curing by winding. When winding at a certain angle, f...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the technical problems of complex process, low service life and low reliability in the traditional vehicle transmission shaft in the prior art, the present invention provides a vehicle composite transmission shaft and a preparation method thereof, which has simple manufacturing process, stable performance and Long service life and high reliability

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