| 摘要 |
PURPOSE: An output-shaft sliding device of a switchgear for plastic greenhouse is provided to prevent a tow cable from being rolled or unrolled without overlapping the tow cables. CONSTITUTION: An output-shaft sliding device of a switchgear for plastic greenhouse comprises the following units. A rotation shaft(11) of a motor is engaged with a helical gear(21) to deliver the rotation power from a worm screw(20) to a worm wheel(30). The rotation power is delivered from a spur gear(31) installed on the same axis as the worm wheel to an output gear(50). A switching device(100) is prepared in order for an output shaft(60) to be inserted into the output gear. A key(51) is inserted into a fixing groove(61) formed in longitudinal direction of the output shaft. A drive shaft is fixed on one side of the output shaft and a tow cable is rolled on the drive shaft. |
