| 摘要 |
PURPOSE:To control a delivery quantity at a fixed value by controlling the travel of a travel bogie in accordance with the calculated value obtained from a turn angle of a boom mounted on the travel bogie and a change of the travel position of the travel bogie in a claiming device delivering a cargo such as coals stacked in a yard. CONSTITUTION:When a stacked cargo 5 is delivered with a bucket 4 at the tip of a boom 3 by turning the boom 3 mounted on a travel bogie 2 travelable along a rail 1 by the drive of travel motors 131-13n, pole number switching solenoid contacts 141A-14nA, 141B-14nB related to individual motors are controlled with a motor number switching control unit 16. That is, a signal branched from an input of a function generator 10 generating 1/costheta based on a turn angle theta and an output signal of a position oscillator 17 fitted to the bogie 2 are inputted to the control unit 16, and DELTAL/DELTAtheta is calculated based on changes DELTAtheta, DELTAL of the turn angle theta and the travel distance L of the bogie 2. The number of operated motors is switched and controlled so that this value falls in a predetermined value. |
