| 摘要 |
PROBLEM TO BE SOLVED: To provide a grating with a jumping prevention mechanism, capable of preventing a grating that is placed on a road gutter or the like from being made to jump by a vehicle or the like for displacement and scattering.SOLUTION: On a rear surface of a grating body 1, a jumping prevention mechanism 2 is attached which includes a disc-like cam 4 provided with an arc-like or helical guide groove 3, and a lock pin 5 which is guided by the guide groove 3 so that a tip end is protruded outward. The disc-like cam 4 is rotated to make the lock pin 5 protrude. A tip end of the lock pin 5 is made to enter a hole part 21 formed on a gutter 20 so that jumping of the grating body 1 is prevented.SELECTED DRAWING: Figure 1 |
