| 摘要 |
PURPOSE: A checking chain block device is provided to safely work without a danger of an accident through a perfect check. CONSTITUTION: A checking a chain block device(100) is acted and a hydraulic pressure designated by a hydraulic cylinder is continuously acted. A hand wheel(73) is rotated by a motor(70) and a decelerator(71) so that a hand chain(66) is continuously rotated. A rod chain(59) connected to the hydraulic cylinder draws out a rod(57') of the hydraulic cylinder while pulled. When a slip occurs due to the abnormality of each component of the chain block(53), the rod chain does not pull the hydraulic cylinder. Thus, the abnormality is easily confirmed through a gauge. |
