| 摘要 |
<p>PURPOSE:To facilitate maintenance and inspection by connecting jacks rotating multiple arms to them, providing a piston on the end section of each arm, feeding a fluid to the upper jack when the arm is rotated downward and a holder supporting a moving cable collides with a piston, and rotating the upper arm. CONSTITUTION:At the time of maintenance and inspection, a cage is lifted to the uppermost floor, pressure oil is fed to the lowest hydraulic jack 21 by a hydraulic piston 23, a plunger 21a is protruded, an arm 14 is rotated until it collides with a stop piece 15, and the arm 14 is held at this position. When the cage is lowered, an intermediate holder 8D collides with the lower end of the arm 14 and is stopped and held, the plunger 24a of a hydraulic piston 24 is pressed by its weight, and the oil in the hydraulic piston 24 is fed to the upper hydraulic jack 21. The upper jack 21 rotates the corresponding arm 14, and the next intermediate holder 8B is stopped and held.</p> |
