Design of Conventional Type Welding Positioner (Capacity-100 Mt)

Abstract

Heavy Engineering is related to manufacturing of Process equipment, reactorsdefense and aerospace jobs, ship building etc.Process Equipment essentially consists of shell, nozzles, anges, Dish' ends andmany other supporting components. Out of these components dish' end is one ofthe critical components in terms of its manufacturing procedure. Operations likeElectros lag Strip Cladding , SAW and grinding are carried out on Dish' end bywelding positioner. There is limited number of welding positioners as compared tojob requirement. Enhance its manufacturing capability and to remove manufacturingconstraints by adding more welding positioners.Positioners are mainly used to manipulate and position the Jobs for 1G positionfor easy down hand welding, independent of operator's skill. Once the job is loadedit can be manipulated conveniently to complete all the welding operations in downhand position. This reduces handling time and frequent use of crane. The job can betilted from 0 to 360 and also rotated from 0 to 360 which are depending on therequirement of specic location of welding.This project is related to design and analysis of 100 tonne welding positioner. Thisdesign includes design of horizontal boom, design of rotational gear box, selection ofslewing ring bearing, selection of rotational motor, selection of brake for rotation,design of tilting structure, design of tilting gear box, selection of tilting motor, selec-tion of brake for tilting etc. Then From driving dimensions to make G.A. Drawing(General Arrangement Drawing) for manufacturing welding positioner.Also 3-D components and assembly have been carried out by using Solid EdgeST Software. Then also 2-D manufacturing drawings have been carried out by usingSolid Edge ST Software. Then excel sheet of shaft design, gear design and horizontalboom are prepared.