| 摘要 |
PURPOSE:To protect an electronic control equipment, etc., mounted on an unmanned carrier car from overheating by exhaustion and to protect the equipment from a zainfall and dust by opening and closing a shutter according to the state of a area where the unmanned carrier car runs. CONSTITUTION:The unmanned carrier car 1 runs along a guide cable G between stages in a factory, and in and out of the factory. An air exit is formed beside a control box 3 formed in front of the car body 2 of this carrier car 1, and the shutter which is opened and closed through a solenoid 5 and a fan 8 for ventilation which is rotated by an electric motor 7 are arranged in the air exit 4. A rainfall sensor 9 is provided on the top surface of the box 3, and two position sensors 10 and 11 are arranged at the rear or front part of the car body 2. Then, the sensors 10 and 11 detect magnets 12 and 13 arranged at an exit or entrance or where there is much dust in the factory, and the sensor 9 detects a rainfall outside of the factory to open or close the shutter 6 according to the state of the path, protecting the electronic controller mounted on the carrier car 1. |
