| 摘要 |
PURPOSE: An opening and closing device for a floodgate is provided to prevent damage to the device by absorbing impact force occurred by acceleration of a floodgate. CONSTITUTION: An opening and closing device for a floodgate comprises a first speed reducer(30), a second speed reducer(40), and a breaker(50). The first speed reducer reduces the rotating speed of a shaft(16a) using a main gear and multiple auxiliary gears. The main bear is installed in one end of a worm wheel shaft. The auxiliary gears are in gear with the main gear. The second speed reducer reduces the speed of the shaft using the auxiliary gears. The breaker is in gear with the main gear and has a drum and multiple shoes. |
