| 摘要 |
PROBLEM TO BE SOLVED: To prevent baggage or articles loaded on a fork lift or the like from colliding with the inner wall of an elevator cage. SOLUTION: An alarm signal is changed according to changes in distance to a front panel 1. When a beam 8b is cut off, the yellow lamp of an alarm device 9 is turned on. When a beam 8c is cut off, the red lamp of the alarm device 9 is turned on, and the alarm device 9 intermittently beeps. When a beam 8d is cut off, the red lamp of the alarm device 9 is turned on and blinks, and the alarm device 9 makes continuous beep sound. Since alarm changes according to the access degree, workers can grasp the access state of baggage or the articles in detail, and so hence loading can be carried out at a proper velocity of approach. |
