Sliding plate and floor plate for turnout

Abstract

Provided are: a sliding plate, the thickness and performance of which can be easily adjusted; and a floor plate for a turnout, using the sliding plate. A sliding plate ( 3 ) is provided with a backing material ( 31 ) comprising a steel plate or the like, a punching metal ( 32 ) disposed on the backing material ( 31 ), and a sintered meal powder layer ( 33 ) formed on the upper surface ( 310 ) of the backing material ( 31 ) so as to cover the punching metal ( 32 ). The sintered metal powder layer ( 33 ) is formed by subjecting an alloy powder for sintering to sintering and rolling, and is impregnated with a lubricating resin through heat melting. The sintered metal powder layer ( 33 ) formed on a metal area ( 321 ) of the punching metal ( 32 ) has undergone high-pressure compression and therefore exhibits a high sintered density and excellent resistance to impact, load and wear. Meanwhile, the sintered metal powder layer ( 33 ) formed in empty spaces ( 322 ) of the punching metal ( 32 ) has undergone low-pressure compression and therefore exhibits a low sintered density and a high impregnation rate of the lubricating resin, thus attaining excellent lubrication.

1 .- 8 . (canceled) 
     
     
         9 . A sliding plate comprising:
 a backing material;   a reinforcing member, which is placed on one surface of the backing material and forms recessed portions and projected portions in its surface; and   a metal-powder sintered layer, which is formed to cover at least the recessed portions formed by the reinforcing member on the one surface of the backing material and is impregnated with at least one of a lubricating resin and lubricating oil.   
     
     
         10 . A sliding plate of  claim 9 , wherein:
 the reinforcing member is a metal plate having mesh structure.   
     
     
         11 . A sliding plate of  claim 10 , wherein:
 the metal plate having the mesh structure is either expanded metal of perforated metal.   
     
     
         12 . A sliding plate of  claim 9 , wherein:
 solid lubricant is dispersed in the metal-powder sintered layer.   
     
     
         13 . A sliding plate of  claim 10 , wherein:
 solid lubricant is dispersed in the metal-powder sintered layer.   
     
     
         14 . A sliding plate of  claim 11 , wherein:
 solid lubricant is dispersed in the metal-powder sintered layer.   
     
     
         15 . A sliding plate of  claim 12 , wherein:
 the solid lubricant is not dispersed in the metal-powder sintered layer at a part intervening between the one surface of the backing material and a surface of the metal plate having the mesh structure on a side opposed to the backing material.   
     
     
         16 . A sliding plate of  claim 13 , wherein:
 the solid lubricant is not dispersed in the metal-powder sintered layer at a part intervening between the one surface of the backing material and a surface of the metal plate having the mesh structure on a side opposed to the backing material.   
     
     
         17 . A sliding plate of  claim 14 , wherein:
 the solid lubricant is not dispersed in the metal-powder sintered layer at a part intervening between the one surface of the backing material and a surface of the metal plate having the mesh structure on a side opposed to the backing material.   
     
     
         18 . A sliding plate of  claim 9 , wherein:
 the lubricating resin is one of polytetrafluoroethylene, perfluoroalkoxyalkane, polyamide-imide, polyimide, polyethylene, and polypropylene.   
     
     
         19 . A sliding plate of  claim 10 , wherein:
 the lubricating resin is one of polytetrafluoroethylene, perfluoroalkoxyalkane, polyamide-imide, polyimide, polyethylene, and polypropylene.   
     
     
         20 . A sliding plate of  claim 11 , wherein:
 the lubricating resin is one of polytetrafluoroethylene, perfluoroalkoxyalkane, polyamide-imide, polyimide, polyethylene, and polypropylene.   
     
     
         21 . A sliding plate of  claim 12 , wherein:
 the lubricating resin is one of polytetrafluoroethylene, perfluoroalkoxyalkane, polyamide-imide, polyimide, polyethylene, and polypropylene.   
     
     
         22 . A sliding plate of  claim 13 , wherein:
 the lubricating resin is one of polytetrafluoroethylene, perfluoroalkoxyalkane, polyamide-imide, polyimide, polyethylene, and polypropylene.   
     
     
         23 . A sliding plate of  claim 9 , wherein:
 solid lubricant is dispersed in the lubricating resin.   
     
     
         24 . A sliding plate of  claim 10 , wherein:
 solid lubricant is dispersed in the lubricating resin.   
     
     
         25 . A sliding plate of  claim 11 , wherein:
 solid lubricant is dispersed in the lubricating resin.   
     
     
         26 . A sliding plate of  claim 12 , wherein:
 solid lubricant is dispersed in the lubricating resin.   
     
     
         27 . A sliding plate of  claim 13 , wherein:
 solid lubricant is dispersed in the lubricating resin.   
     
     
         28 . A floor plate for turnout, comprising:
 a substrate for placing and fixing a stock rail on one surface of the substrate;
 a sliding plate of  claim 9 , which is fixed on the substrate and supports a tongue rail slidably on a side of one surface of the substrate.