International Journal on Recent and Innovation Trends in Computing and Communication ISSN: 2321-8169 Volume: 3 Issue: 12 6613 - 6616 ______________________________________________________________________________________ 6613 IJRITCC | December 2015, Available @ http://www.ijritcc.org _______________________________________________________________________________________ Design, Modification and Analysis of Concrete Mixer Machine Amruta K. Wankhede M-Tech CAD/CAM B.D.C.E.Sevagram amrutawanky@gmail.com Dr. A.R. Sahu Coordinator of M-Tech CAD/CAM Dept.of Mechanical Engg., B.D.C.E Sevagram anilrsahu@yahoo.com Abstract:- This paper contains the study, design, modification and analysis of concrete mixer. Mixer widely used to make a concrete mixture which used to building construction and industry to make a concrete block, pipe, sheets, etc. it is observed that there is a failure of shaft and blade in mixer thus, deign modification and analysis of mixer have been done and presented. Keywords: shaft design, computer aided design, mixer. __________________________________________________*****_________________________________________________ I. INTRODUCTION: A concrete mixer is also commonly called a cement mixer, is a device that homogeneously combines cement, aggregate such as sand or gravel, and water to form concrete. A typical concrete mixer uses a revolving drum to mix the components. Today's market increasingly requires consistent homogeneity and short mixing times for the industrial production of ready mix concrete, and more so for precast concrete. This has resulted in refinement of mixing technologies for concrete production. To supply continuously the ready mix its necessary that the concrete mixer should be in good condition of working, but it has been observed that the shaft and blade of mixer get failed after some uses of time.So in this project I am trying to identify the different causes of blade and shaft failure. It was found that spun pipe manufacturing industry or industry related to manufacturing of cement or concrete product only concentrated on the geometrical properties of reinforced concrete. The geometric property of reinforced concrete is depends upon the proper ratio of input materials and also proper functioning of mixer machine. It is observed that the shaft of mixer machine bends due to overloading of input mixture and various forces acts on it. And thus mixer hopper rotated in oblong way thus, also the blades get break due to unbalancing of shaft. This results into low quality of concrete mixture. Mixing is a complicated process that is affected by the type of mixer, the mixing cycle as defined by the duration, the loading method, and the energy of mixing. For most machine shafts, however, analysis should be relatively straightforward. That’s because the failure typically provides strong clues to the type and magnitude of forces on the shaft and the direction they acted in, the failed parts will tell exactly what happened. Design and specification: Drum : A concrete mixer is a device that homogeneously combines cement, conglomeration such as sand or gravel, and water to form concrete. A typical concrete mixer uses a revolving drum to mix the components. Cement, sand and other aggregates are loaded in a hydraulically operated hopper and then poured in the mixing drum for final mixing and then can be unloaded by tilting the drum. Specification: Drum specification: • Thickness of drum=3mm • Upper rod thickness=16mm • Upper dia of drum=509mm • Middle dia=894mm • Bottom dia=600mm • Overall height=1000mm Chassis specification: • Upper length=970mm • Lower length=1150mm • Width=100mm