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Drive lines
Published in M.J. Nunney, Light and Heavy Vehicle Technology, 2007
At this stage, we shall confine our attention to the former arrangement of a propeller shaft driving a rear axle mounted solely on semi-elliptic leaf springs which thus combine the functions of spring medium and locating linkage. This method of transmitting drive to the wheels, through the cushioning effect of what is termed a live axle on its springs, dates from the early 1900s and is well known as the Hotchkiss drive principle (Figure 19.31). It became so named because it was introduced by the once famous Hotchkiss company in France.
Computational study on the potential of aluminium alloy as a candidate material in automotive leaf spring
Published in Australian Journal of Mechanical Engineering, 2023
Mayank Kamboj, Amit Chetry, Caneon Kurien, Ajay Kumar Srivastava
A leaf spring undergoes various loads during the running condition, but these loads depend on the drive used for the transfer of torque from the transmission to the axles. There are two different types of drives commonly used in commercial vehicles, namely Hotchkiss drive and Torque tube drive. Among these drives, Hotchkiss drive is used in the heavy-duty vehicles since in this type of drive, the propeller shaft is coupled to the differential with the help of universal joint, which ensures that not much drive thrust is experienced by the differential and impacts of most of the loads like drive torque, brake torque acts on the leaf spring. Therefore, designing of leaf spring considering these factors is very necessary for failure analysis. This arrangement uses two rear leaf springs, which are longitudinally-mounted, and are connected to the frame by a ‘fixed’ pivot at the front, and swinging shackles at the rear. A universal joint is mounted at each end of the exposed or ‘open’ type propeller shaft, with provision for accommodating change in shaft length due to the deflection of the springs. This drive, therefore, incorporates an open propeller shaft with two universal joints and a slip joint.