| 摘要 |
PURPOSE:To simplify the fitting operation of a scraping plate by a method in which an insertion hole for the chisel of a breaker is drilled in the center of a steel plate for raking plate and a large number of claws are attached to the bottom of the steel plate. CONSTITUTION:An insertion hole 21 is drilled in the center of a scraping plate body 2, and guide blocks 22 are erectly provided at positions except the hole 21 on the upside of the body 2. Plural claws 3 of steel bar are attached to positions apart from the hole 21 on the bottom side of the body 2 to form a scraping plate 1. For the case where rocked, etc., is broken by a breaker A and the rock pieces are scraped, the breaker A is inserted into the hole 21 of the scraping plate body 2 from a chisel E side. The scraping plate 1 can thus be simply attached without the needs to remove out the breaker A. |
