| 摘要 |
PROBLEM TO BE SOLVED: To prevent a paving board from traversing and prevent a track circuit from shorting. SOLUTION: An inside track paving board 11 is installed in between a pair of rails R, R and an outside track board 12 is installed at the outside. A crossing through hole 13 is formed in the protrusion 15 protruded downward lower than the lower face level of the rail R, a bolt shaft 20 is inserted and fixed with a nut 21, the bolt shaft 20 connects paving boards 11, 12 and fastens them, hence, the paving board is fixed so as not to move in the traverse direction. The paving board structure can be used for not only a crossing passage 4 but also for a double wheel device 5 of the widthwise end edge, a small scaled doble wheel device can be made in a paving board structure, the paving board can be stably fixed firmly. When the paving board 11 is divided in the middle between the rails R, R, the paving board is further made small and lightweight, When giving an insulation part 20b in the middle of the bolt shaft 20, the rails do not short and a step 17 is formed at the end face 16 facing the rail R. Further, if the upper face 17a is brought into contact with the under face of the rail base 24, the contact of the bolt shaft 20 with the rail R due to upfloating can be prevented. COPYRIGHT: (C)2005,JPO&NCIPI
|
