| 摘要 |
PURPOSE:To make it possible to run and operate a running device smoothly outdoors by providing a logic circuit which discriminates optimum conditions of running and damping of a running body for the influence of wind on a basis of an anemoscope and an anemometer. CONSTITUTION:Brakes 11 and 19 connected to running driving motors 7 and 15 of a crane 1 through shafts of gears have a running stop function, and their operations are controlled by electromagnetic contactors 10 and 18 for brakes. Timings of release and damping of brakes are discriminated logically on a basis of the direction and the velocity of the wind, and extension or shortening of their limit times is selected. For the purpose of minimizing the influence of the wind that a load is fluctuated considerably by the velocity and the direction of the wind, data of the anemometer and the anemoscope and a command of a master controller are inputted to the logic circuit consisting of an electronic computer or the like to perform logical discrimination, and a motor torque due to selection of electromagnetic contactors, the magnitude of anti-phase damping, and the operation timing of brakes are selected to perform optimum driving. |
