| 摘要 |
PURPOSE: To prevent the intrusion of sand, dust, etc., to a sliding section by protecting the exposed section of a main beam. CONSTITUTION: A sliding plate 20 installed on the main frame side is slid to a sliding plate 21 fixed on the main beam 4 side. A folding type sheet 23 and a bellows 30 are mounted at the rear end section of the sliding plate 20, thus protecting the exposed section of the sliding plate 21. A scraper brought into contact with the sliding plate 21 is set up at the rear end section of the sliding plate 20, thus sweeping and cleaning the surface of the sliding plate 21. |
