An innovative speed reduction mechanism with self-adaptability to variable transmission angles

An innovative speed reduction mechanism featuring self-adaptability to variable transmission angles is being proposed, the purpose of which is to be able to maintain expected reduction ratio by adapting itself to the variable intersection angles between input shaft and output shaft. The synchronous planetary pulley-based mechanism is combined with the features of RCRCR transmission structure and K–H planetary transmission mechanism. Structure analysis and force analysis of the mechanism were demonstrated to explain the working principle and kinematic feasibility of the mechanism. The NX model of the mechanism was drawn and simulated to prove the realistic kinematic results of mechanism were the same as the theoretic one. The mechanism significantly lowers the accuracy requirements of relative position between the prime mover and the working machine while shortening the transmission chain at the same time.

► A speed reduction mechanism features self-adaptability and achieves speed reduction. ► The mechanism is combined with the features of RCRCR and K–H transmission mechanism. ► The device lowers the position accuracy requirements between prime mover and working machine. ► The mechanism shortens the transmission chain.