| 摘要 |
PURPOSE: A boom assembly actuator is provided to steadily support a boom by controlling the slop angle of a boom using a worm and a worm wheel. CONSTITUTION: A boom assembly actuator comprises a pair of worms, a pair of motors, and a power controller(130). An operational shaft(170) for controlling the vertical angle of a boom is formed in one side of the worm wheel. The worm wheel revolves with the operational shaft. The worm is arranged in both sides of the worm wheel and meshed with the worm wheel. The motor is connected to driving shafts and delivers the drive force to the worm. A power controller makes identical driving force actuating on a pair of worms. The power controller includes a first gear(132), a second gear(134), a third gear(136) and a fourth gear(138). A pair of worms revolves with the driving force of the motor and rotates the worm wheel in one direction. The operational shaft controls the angle of a boom. |
