What is the Problem?

Ingersoll-Rand has recently encountered a problem due to changing environmental codes.  By the year 2006, all products used in the European market must meet strict noise regulations.  I-R’s current series of compactors fails to meet these criteria and thus they have given Bellringer “E” the task of developing ideas to minimize such noise.  In a similar design project, the idea of using a counter-rotating mass was suggested and it was our job to further investigate this solution. 

The idea behind the counter-rotating eccentric masses is that by using two masses spinning in opposite directions the horizontal forces would cancel one another and leave just the vertical components.  The system must also create a pounding force equivalent to the current models.  Bellringer "E" was asked to develop a concept model and explain its implementation in to the current production models. 

What is Required?

• Vertical Pounding Force equal to or greater than 32000 lb
• Must fit within the existing drum

What must we Deliver?

• Concept model prototype
• Design analysis for implementation
• Design that is Simple and Reliable

The Solution

The Bellringer “E” proposed Bevel Gear Design encompasses all the requirements set forth by Ingersoll-Rand.  The four bevel gear differential is a solid solution to the counter-rotating eccentric mass proposal and when built with our design specifications will accurately produce the required compaction forces.  Ingersoll-Rand now has the opportunity to test the proposed design and implement it into production.