Gearless Transmission Using Elbow Mechanism

Abstract – This paper explores an innovative gearless transmission system that replaces traditional toothed gears with 90-degree elbow rods, or "L-pins," to transfer power between shafts. The mechanism functions by connecting two hubs through a series of L-pins inserted into specifically drilled holes, creating a physical link that allows motion to bridge a 90-degree angle. By using four of these pins arranged radially around the center axis, the design aims to significantly reduce the friction and mechanical wear typically associated with gear teeth. To test the effectiveness of this approach, the study analyzes the system's performance regarding speed, torque, and structural integrity. Using SolidWorks software, the researchers simulated the mechanism to observe how the pins and hubs react to stress, ensuring the design is both durable and efficient for real-world mechanical applications. Key Words: Elbow mechanism, Gearless Transmission, Hub, L-pins, Shaft