Analysis On Operation Defects Of Catenary Positioning Clamps In High-speed Railways

The positioning clip is one of the key components of the contact network device.It is an important part of the connection line and the locator that carries a certain mechanical load to make the arch network relationship more stable.There are two main advantages of the positioning clip,one is to fix the contact line at the positioning point,so that the contact line tends to stabilize in the entire bow network system,so that the resilient bow can smooth and quickly pass;The folder fixed contact line,adjust the positioner holder to adjust the contact line to pull the value,so that the electroded bow is uniform and the contact line is touched to improve the life of the battery.The operating state of the contact network positioning clip will directly affect the safety of the high-speed railway operation.Once the positioning line is broken,the case is broken,it will cause the locomotive to play back to the bow,affect the normal operation of the train;the weight leads to positioning Invading the dynamic envelope,causing a serious bow network accident,and therefore,study the fatigue characteristics of the positioning line clamps,and carefully analyzed against the site-exposed positioning line clamps,thereby formulating preventive measures to ensure high-speed rail operation safety.It is quite important.Aiming at the dynamic operation of the positioning line in the high-speed railway,the fatigue characteristics of the high-speed rail positioning line clip are analyzed by the fatigue theory.Taking the Beijing-Guangzhou high-speed railway in a power supply section,the special running section of the Wusker is an example.The current high-speed rail operation is positioned.The defect of the thread holder,found that the fatigue and production and installation process of the positioning wire clamp,the operation of external environment,material selection is related to factors.Through stress analysis and corrosion fatigue,metal fatigue is closely related to the on-site construction process,and the construction torque will not be up to the positioning line clamp,and the loom is directly affected.The vibration analysis of the bow network is used to obtain the motorcycle operation,the contact line parameters will not standard will Intensive positioning lines,finally cause positioning line clips,loose;by depriveting the key place(relative pull-out value from zero),the positioning line clamp is more likely to cause positioning line clamps to fail,reduce the positioning line Clean service life.This dissertation will focus on the defective research analysis of the deficiencies of the Beijing-Guangzhou high-speed rail,and Ziwuke specially used the deficiencies,first introduce the application and model of the contact network positioning clip in the high-speed railway,and then the contact network positioning line is flapped.The problem of breaking and other issues,finally combined with the high-speed exposure of the high-speed exposed defect problem,and develop a series of preventive measures to deal with the fatigue operation characteristics of the positioning line clip,such as the material model,use of both There is a comprehensive analysis of testing,using a bow model to carry out safety risk research,strengthen the maintenance of key installations,the use of new installation tools,etc.,effectively control and reduce the defects caused by the operation of the positioning line.