| 摘要 |
PROBLEM TO BE SOLVED: To easily and precisely detect drilling resistance against a continuous unloader of a bucket elevator type and to properly prevent breakage, etc., of a machine. SOLUTION: A pressure detection means 20 to detect that a support frame 4 is curved due to side surface pressure by a bulk material which a scraping part receives and an interval between the support frame 4 and an elevator frame 3 is changed is set between the support frame 4 supporting the scraping part extending in the horizontal direction of a bucket elevator and the elevator frame 3, and increase in the side surface resistance which is one of drilling resistances is detected by a signal from it.
|
