Design and Analysis of Lift Axle Mechanism for Heavy Load Vehicle

Some dump trucks and trailers may be configured with a lift axle which may be mechanically raised or lowered. The axle is lowered to increase the weight capacity or to distribute the weight of cargo over more wheels. When not needed the axle is lifted off the ground to save wear on the tire and also the wear of axle and to increase traction in the remaining wheels. Also lifting an axle alleviates lateral scrubbing of additional axle in very tight turn allowing vehicle to turn more readily. The current mechanism used for lifting the axle in mechanical suspension as per the survey uses a mechanical pin which is inserted into a cavity or uses a wire rope tied to the chassis after the axle is lifted with the help of a screw jack while the trailer is travelling empty loaded. So there is more load on trailer chassis also it against RTO rule. Our proposed mechanism for lifting the axle will include an automated system consisting a push button for realizing the pressure inside air bellow. There by causing upward and downward movement of axle and this design is way better than previous one and also fit in RTO and road laws. Following paper module contains design of lift axle mechanism for heavy duty vehicles as per designed calculations and corresponding weight load analysis of axle having final summation of load on axle shaft.