Device for applying liquid on rail

Abstract

There is provided a device for applying liquid on a rail capable of minimizing wasteful flowing down of expensive application liquid to suppress the total amount of discharge of the liquid, reducing costs and further suppressing occurrence of environmental contamination, and preventing slippage of a wheel due to excessive liquid application. The device for applying liquid on a rail includes a tank, a liquid discharge pump for receiving supply of application liquid from the tank and performing a liquid discharge operation as a wheel passes, and a liquid application unit for discharging the application liquid onto a rail upon being supplied with the liquid from the liquid discharge pump. The liquid application unit has a nozzle block 40 having a large number of nozzle holes 43 arranged in the upper surface of the nozzle block, and the nozzle block 40 has on its end section a hole-less end section 40 a where no nozzle hole is provided. The nozzle block 40 is pressed and supported from diagonally below by a nozzle block support device 50 that holds a base of the rail from below in such a way that the rail-side edge 40 b of the top surface of the nozzle block 40 is always in close contact with the tread of the rail.

1 . A device for applying liquid on a rail comprising:
 a tank;   a liquid discharge pump for receiving supply of application liquid from the tank and performing a liquid discharge operation as a wheel passes; and   a liquid application unit for discharging the application liquid onto a rail upon being supplied with the liquid from the liquid discharge pump,   wherein the liquid application unit has a nozzle block having a large number of nozzle holes arranged in the upper surface of the nozzle block, and   the nozzle block has on its end section a hole-less end section where no nozzle hole is provided.   
   
   
       2 . The device for applying liquid on a rail according to  claim 1 , wherein the nozzle block is pressed and supported from diagonally below by a nozzle block support device that holds a base of the rail from below in such a way that the rail-side edge of the top surface of the nozzle block is always in close contact with the tread of the rail. 
   
   
       3 . A device for applying liquid on a rail comprising:
 a tank;   a liquid discharge pump for receiving supply of application liquid from the tank and performing a liquid discharge operation as a wheel passes; and   a liquid application unit for discharging the application liquid onto a rail upon being supplied with the liquid from the liquid discharge pump,   wherein the liquid application unit has a nozzle block having a large number of nozzle holes arranged in the upper surface of the nozzle block,   the nozzle block has on its end section a hole-less end section where no nozzle hole is provided, and   the nozzle block is pressed and supported from diagonally below by a nozzle block support device that holds a base of the rail from below in such a way that the rail-side edge of the top surface of the nozzle block is always in close contact with the tread of the rail.   
   
   
       4 . The device for applying liquid on a rail according to  claim 2  or  3 , wherein in the nozzle block support device, one end thereof is hooked to the base of the rail and the other end has a securing bolt for securing the nozzle block support device to the rail and a pressing bolt for pressing the nozzle block from diagonally below. 
   
   
       5 . The device for applying liquid on a rail according to any of  claims 1  to  4 , wherein the hole-less end section is disposed at least at a front end section in the direction in which a vehicle is traveling. 
   
   
       6 . The device for applying liquid on a rail according to any of  claims 2  to  4 , wherein the nozzle block support device is disposed in such a way that it extends across a runway rail and a guardrail. 
   
   
       7 . The device for applying liquid on a rail according to  claim 1 , wherein the liquid discharge pump is mechanically driven by the treading pressure from the wheel. 
   
   
       8 . The device for applying liquid on a rail according to  claim 1 , wherein the liquid discharge pump is electrically driven by a solar battery or an AC power supply.