Abstract：Asynchronous travelling on both sides of travelling mechanism can lead to deflection of large span crane. As a consequence, deflection can induce rail gnawing of travelling wheel or rail damage to prevent normal travelling or more seriously to bring about safe accident. As regards the above-mentioned problem, several control schemes on automatic correction system was provided,and the working principle of the system as well as its hardware composition, installation diagram sketch, installing method and its pros and cons were introduced in detail, so that research and design personnel of crane to work better.
2013, Vol. 14 
