The BHX series transfer car is powered by the busbar. The alterative current is suppiled consistently to the pulling motor by slide knife taken from sliding contact line through electric contrql system , which makes the car start ,stop, move forward and relize other functions.The sale sliding contact line can be installed in the middle of the tracks or by the outside of the tracks or in the trench or under the roof of the plant .Positing fixture ,lifture, lifting platform, clamping device