| 摘要 |
PURPOSE: To facilitate the exchange of the wear parts of a scraper having a pair of ends of a trapezoidal shape and the recycling of non-wearing parts by attachably and detachably mounting a pair of annular wear segments on an elongated main body formed by connecting two complementary parts by means of a bolt. CONSTITUTION: The two complementary parts 5, 6 forming the slender main body 4 of the bidirectional scraper 11 having both end portions 4A, 4C of the trapezoidal shape are interconnected by means of a nut 7 fitted to one of these parts and the bolt 8 inserted into the other of the parts. Further, a pair of the annular wear segments 2, 3 are attachably and detachably mounted across a sepn. sleeve 15 of the central portion 4B on the slender body 4 between both end portions 4A and 4C. The disassembly and exchange of the respective parts are facilitated by such constitution and radial deformability and wear resistance are improved. |
