Abstract
Vertical lifting of loads in workshops, assembly lines and material handling often requires a stable, compact mechanism. Scissor lifts convert horizontal actuator motion into vertical travel through crossed linkages. Using a pneumatic cylinder as the actuator provides clean, responsive control without hydraulic oil.
This project develops a Pneumatic Scissor Lift Jack in which compressed air drives a pneumatic cylinder that expands the scissor linkage, raising a platform. Key design elements include selection of cylinder bore and stroke, linkage geometry for desired lift height, structural strength of arms and frame, and safe air-control circuitry. The unit demonstrates fundamental kinematics, force amplification and pneumatic system integration suitable for academic evaluation.
It is an excellent final-year project for Mechanical, Mechatronics, Production and Manufacturing Engineering students, combining fabrication, mechanism design and pneumatic power transmission.
