发明授权
- 专利标题: Device for driving a flexible protection web rolled up on a shaft
- 专利标题(中): 用于驱动在轴上卷起的柔性保护织物的装置
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申请号: US356779申请日: 1982-03-10
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公开(公告)号: US4444363A公开(公告)日: 1984-04-24
- 发明人: Dominique Jacquel , Louis Plumer , Henri Giust
- 申请人: Dominique Jacquel , Louis Plumer , Henri Giust
- 申请人地址: FRX Cluses
- 专利权人: Somfy
- 当前专利权人: Somfy
- 当前专利权人地址: FRX Cluses
- 优先权: FRX8105821 19810324
- 主分类号: B65H20/36
- IPC分类号: B65H20/36 ; E06B9/70 ; B65H17/02
摘要:
This invention relates to a device for driving a flexible protection element rolled up on a winding shaft, the free end of the element being connected through one or a plurality of flexible bonds to a winding drum. The winding drums and the winding shaft are coupled through reversible reduction gears to corresponding electric motors and to a pair of electromagnetic brakes of the type operating by current deficiency. The first motor is adapted to rotate in a first direction for rolling up the flexible bonds. The second motor is adapted to rotate in a direction opposite to that of the first motor for rolling up the flexible protection element. Electrical or electronic means are provided for actuating anyone of the two motors and simultaneously energizing the two brakes. This invention is applicable notably for driving protection tents, canvasses and the like in glasshouses, greenhouses and the like.