Control of steel rails grinding cycle

Steel rails grinding cycle refers to the measurement basis of the time interval of rail grinding operation, which needs to be determined according to the line condition and maintenance purpose. Different lines have different effects on train running stability, vibration and noise, and the grinding cycle is also different.

At present, the setting of steel rails grinding cycle in China mainly depends on the field experience of the rail grinding, and the development of steel rails disease does not guide the setting of steel rails grinding cycle. Before the Beijing-Shanghai high-speed railway opens, the steel rails are pre-polished by high-speed grinding trains, and preventive grinding is performed twice a year after opening, and adjusted according to regional passenger traffic. According to the observation results of the Beijing-Tianjin intercity railway operation, Zhou Qingyue and others suggested that the rail grinding cycle of high-speed railways in China should be reground every 30 ~ 50mt. Take off. When a disease is temporarily found to affect train operation, grinding operations should be carried out as soon as possible.