Design Of Undercarriage Control System Of Railway Rescue Crane

The railway rescue crane is a key equipment for handling the derailed accidents oflocomotives and removing obstacles along railways, it plays an important part in accidentrelief operation and ensuring transportation safety. When entering the21st century, therailway construction of our country is heading for high speed and heavy load, and facing tothe development of the west area. This proposes higher requirements for the maneuverability,operational effectiveness, reliability, and adaptability of railway crane. At the same time, itclearly shows the direction for the technical innovation and development of the crane.The control system is a key component of the railway rescue crane, it has great effect onthe working performance and safety of the whole crane. At present, the technical levels of thecontrol system of the railway crane produced at home still have a large gap compared with theadvanced world levels. Therefore, it is necessary to investigate the crane control technology,develop new control system, and reform the existings by advance technique. It is of greatsignificance for enhancing the operational performance of the crane, improving the rescueability along railways, and reducing the loss in accident situations.This dissertation analyses the control technology of the railway crane at home andabroad. Based on the analysis and according to the control requirements of the domestic160ton railway rescue crane, the overall scheme of the undercarriage control system isdetermined, the hardware design and the software design of the control system are finished. Inthe dissertation, the EPEC controller is adopted to control the undercarriage workingmechanisms, the CAN bus is used as communication media among the controllers and othernetwork nodes, and the CoDeSys software which is supporting the controller is selected as atool for the control program writing. By computing and processing with the data received, thecontroller judges whether the working conditions are met. If the conditions are met, it willcontrol the mechanisms to finish the working tasks; while the safety working range is to beexceeded, it will stop their working, and send the related data and alarming signals to thedisplayer and the superstructure controller for displaying and reminding the driver.Compared with the traditional control system of the crane, the system designed in thisdissertation can monitor the work of the undercarriage mechanisms in real time, impose safetyrestrictions on the driver’s operation automatically, and display the working status. Thesystem has good visualability, high reliability, and strong anti-interference ability, it can makethe crane work stably and effectively in harsh environment.