MODELLING AND ANALYSIS OF MECHANICAL PULLER

Abstract

In this work, a simple, inexpensive, lightweight, low energy consumption mechanical extractor was developed to operate. The puller screw shaft was first designed and followed by the nut and then its collar top. Non-conventional shapes were assumed for the collars and handles. Finite element analysis was used to evaluate the stress in the arm and collar which had complex shapes. Finite element analysis reveals that pullers are less likely to fail under design working conditions. A designed 3 arm mechanical bearing puller was fabricated and used to remove many bearings stuck in the shaft. Attempting to remove a component mounted on a shaft without using the correct type of puller can be frustrating and time consuming. A snug fit, dirt, or corrosion can make the removal process difficult. Trying puller alternatives such as cutting, blow torch, and hammer poses obvious safety risks. There is also a risk of damaging the components of the machine you are trying to repair. Mechanical pullers are a great tool for removing components from different industries. Small types of pullers are widely used by technicians such as small car stores. Larger and higher tonnage models are used in heavy industry. This project, which requires the use of a puller, generally involves the maintenance of rotating equipment. Common components to remove include bearings, gears, wheels, pins, bushings, sleeves, couplers, sprockets and pulleys. Keywords: - Mechanical puller, collar, shaft, linkage arm, Design and analysis.