| 摘要 |
1,040,530. Earth-moving bowl type scrapers. M-R-S. MANUFACTURING CO. April 29, 1965 [May 6, 1964], No. 18142/65. Heading E1F. An earth-moving bowl type scraper comprises a substantially vertically mounted elevator 42 extending transversely of the scraper for a lesser distance than the distance between the bowl sides, having blades 44 mounted on a chain conveyer for lifting earth scraped by the blade 32 adjacent its lower end and a spreader conveyer 54 mounted horizontally with horizontally extending longitudinally V-shaped slats 60 mounted on continuous chains 58 engageable with the earth 61 raised by the elevator to spread it rearwardly and transversely of the bowl. A rock by-pass mechanism is incorporated into the elevator and comprises hydraulic cylinders (not shown) urging the elevator into the loading position but allowing the elevator to pivot about an upper sprocket 50 in the event of rocks jamming between the blade 32 and elevator. The drive of the elevator and conveyer may be reversed. Bottom dump gates 90, are provided formed from pairs of doors 92, 94 upwardly hingeable together and powered by a double-acting cylinder and piston arrangement which also allows a spreader device 146 to be lowered when the doors are opened to the dumping position. A material detecting device 40 is mounted on the top rear of the bowl to indicate when the bowl is full. |
