| 摘要 |
PURPOSE:To enable a conveyor to be smoothly swivelled by configurating device in such a way that the speed of a driving gear located beyond the stated radius of gyration is set to be proportional to the radius of gyration, but the speed of the gear located within the stated radius of gyration is to be increased in proportion to the distance increased within the controlled speed. CONSTITUTION:When l1 is greater than La, the speed Ui of the corresponding crawler 3-i is to be the value of the conveyor tip end speed V multiplies by li, and is outputted into each of inverters for the crawler 3-i which has the drooping characteristic. Where, L represents the whole length of a conveyor, li represents the distance to the crawler 3-i, and La represents the stated distance. On the other hand, when li is smaller than La, the speed is set to be Ui within the range of the controlled speed V0 of the inverter, and furthermore is set to be greater than the speed of Ui-1 for the inner side. This configuration enables the conveyor in a continuous length to be smoothly swivelled.
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