Tow Bar PPT ATLAS COPCO final
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This document summarizes a student project to design and analyze a tow bar for a portable compressor. It will include load analysis for various maneuvers, material selection based on strength and toughness, and tube selection to sustain tensile and compressive loads. The project aims to renew the design of the tow bar for an Atlas Copco portable compressor model to improve results and address defects in the existing design. The students will work with Atlas Copco employees and receive guidance from their project advisor.
Tow Bar PPT ATLAS COPCO final
- 1. Design and Analysis of Tow Bar for portable compressor Varun Verma Pankaj Khannade Akash Chitnis Agnivesh Kumar Project Guide : Mr. G. A. JAGDALE
- 2. Contents Introduction to tow bar technology Type of tow bar Force subjections Project description Work Flow Acknowledgements
- 3. Introduction to tow bar technology • A tow bar is a device attached to the chassis of a vehicle for towing. • It can take the form of a tow ball to allow swivelling and articulation of a trailer, or a tow pin and jaw with a trailer loop. • Major application of tow bars exist in agricultural, industrial, railways and automobile sector. • A tow bar is always fitted with a clearly visible plate or label giving the following information: The manufacturer’s name The type approval number The manufacturer’s number The maximum permitted nose weight in kg The test load used to type approve the tow bar The tow bar type classification
- 4. Types of tow bar Flange tow bars (2&4 Bolt) • 2 bolt flange is the standard flange tow bar this has one fixing point for a tow ball. • 4 Bolt flanges are a stronger design and gives the option of bolting the tow ball at 2 different heights these are normally used on commercials and 4x4 vehicles. • This gives us the liberty of having different types of tow balls as required. • Towing heights can be altered using drop plates.
- 5. Types of tow bar Swan Neck Tow Bars • The towball is integral with the rearward-projecting part of the towbar. It may be welded or bolted to the main structure of the towbar. • This bracket is designed to give a tow ball at the correct towing height and the 'L' shape of the bracket normally fits under the bumper • It has a good angle and clearance from the ground. • It is cheap. • It has a major limitation of having constant height of the tow ball and also that different kinds of tow balls cannot be fitted
- 6. Force Subjections • When accelerating, there is more mass to be accelerated, so the maximum acceleration is reduced. The force that accelerates the towed vehicle is transmitted through the tow bar, which is in tension. As well as pulling forwards on the towed vehicle, the tow bar also pulls backwards on the car, reducing the resultant force that causes acceleration • Tension in the tow bar is maintained when the car and towed vehicle are travelling at a steady speed, but now the force is reduced, being equal to the resistive force acting on the towed vehicle. • During braking, the car pushes back on the vehicle being towed, which in turn pushes forwards on the car. This reduces the car’s deceleration, so braking distances are increased.
- 7. Project Description • Design, Modeling, Testing and Analysis of tow bar for portable compressor model : XAS 187 • If the renewed design displays better results then it will be incorporated in the existing model XAS 187 • Complete study of tow bar including its modes of failures and different functionalities. • Work closely with employees of Atlas Copco and learn about the defects in existing design.
- 8. Proposed Work Flow Design Stage Load Requirements • A sequence of quasi-static load analyses will be performed for various manoeuvres which consists of : Pulling the vehicle straight and forward or pushing straight backwards Elevation differential refers to one vehicle being above or below the other Material Selection The material will be selected based on strength, toughness, and heat treatability The ambient conditions and duration of operation Tube Selection A tube with sufficient strength which is able to sustain the tensile and compressive loads of the portable compressor and has the minimum required cross-section area will be designed.
- 9. Acknowledgements • We are thankful to Prof .G.A.Jagdale for being our project guide. • We are thankful to Atlas Copco for giving us the opportunity to work with them. • We are also thankful to Prof . A. K. Joglekar for approving our project .