| 摘要 |
PURPOSE: A shift control device of a platform for a ladder truck is provided to prevent malfunction due to the twisting of a wire by restricting the shifted distance of the platform. CONSTITUTION: A shift control device of a platform for a ladder truck comprises a winch unit(150), a platform shift detecting part, a control part, and a hydraulic pressure unit. The winch unit is connected to a platform(110) by a wire to ascend and descend the platform on a multi-stepped boom(100). The platform shift detecting part is installed in the winch unit. In order to set the stroke of the platform, the platform shift detecting part detects the RPM of the winch unit and transfers the detected RPM to the control part. The control part is connected to the platform shift detecting part to receive signals and to control the operation of the winch unit. The hydraulic pressure unit provides driving force to the winch unit. |
