摘要:
A wayside lubricator for railroad cars has a number of sensors (9, 10, 11) mounted adjacent the track which detect the approach and passage of rail cars. A lubricant supply and a pressurizing system are mounted adjacent the track and in fluid communication with a control valve and spray nozzle (12). The spray nozzle (12) is aimed to shoot lubricant into a target zone when the control valve is opened. The spray nozzle (12) is turned on for a defined duration of time so that the quantity of the lubricant is kept under control. Application of the lubricant to the wheels of the locomotive is avoided by detecting locomotive wheels and leaving the valve closed until they pass. This invention reduces the friction between the wheel tread and rail on curves for the trailing cars and thus reduces the friction and the force that is experienced by the wheel flanges on curves.
摘要:
A lubrication system for a railroad locomotive applies a lubricant with great accuracy in computer-controlled, precise quantities behind the last axle of the locomotive such that the lubricant is consumed by the time the entire train has passed under all track, speed, temperature and train size condition. Hydraulic pulse-width modulation (PWM or %PWM) controls the quantity of lubricant delivered. Time is divided into a series of windows (33, 34, 35) each consisting of a few seconds. Lubricant delivered from a pressurized tank (8) through long hoses to a solenoid controlled valve (12) is then metered by the duration within this time window (33, 34, 35) for which the computer computes and opens the valve (12). Compensation is provided for train tonnage and lubricant temperature as well as track curvature and train speed.
摘要:
A wayside lubricator for railroad cars has a number of sensors (9, 10, 11) mounted adjacent the track which detect the approach and passage of rail cars. A lubricant supply and a pressurizing system are mounted adjacent the track and in fluid communication with a control valve and spray nozzle (12). The spray nozzle (12) is aimed to shoot lubricant into a target zone when the control valve is opened. The spray nozzle (12) is turned on for a defined duration of time so that the quantity of the lubricant is kept under control. Application of the lubricant to the wheels of the locomotive is avoided by detecting locomotive wheels and leaving the valve closed until they pass. This invention reduces the friction between the wheel tread and rail on curves for the trailing cars and thus reduces the friction and the force that is experienced by the wheel flanges on curves.