Safety Enhancement of Screw Conveyor Using Lid-Activated Automation Mechanism

Abstract

Screw conveyors are extensively used in industries for material handling, but they pose serious safety risks when operated with open lids or during maintenance, as accidental contact with the rotating screw can cause severe injuries. This paper focuses on the safety enhancement of a screw conveyor using a lid-activated automation mechanism to eliminate such hazards. The proposed system employs a limit switch or proximity sensor mounted on the conveyor lid, which continuously monitors its position and automatically cuts off power to the motor when the lid is opened. This interlocking mechanism ensures that the conveyor operates only when the lid is securely closed, thereby preventing human error and accidental access to moving parts. The system is simple, cost-effective, and easy to retrofit into existing conveyor setups without affecting productivity. Overall, the implementation significantly improves operator safety, reduces accident risks, and supports compliance with industrial safety standards.