公开(公告)号：US4606527A

公开(公告)日：1986-08-19

申请号：US684455

申请日：1984-12-21

申请人： Alexander Ziller ,  Helmut Grosser

发明人： Alexander Ziller ,  Helmut Grosser

IPC分类号： A63J1/02 ,  B66D1/12

CPC分类号： A63J1/028

摘要： For raising and lowering theatre scenery there is a horizontal track in the fly loft of the theatre, and several carriages, slidable along the track, are shiftable to any desired positions along the track, positions being chosen in accordance with possibly uneven or non-uniform weight distribution in the scenery to be handled. A series of cables, one for each carriage, runs from a common winding drum to one end of the track and then to an anchorage at the opposite end of the track. Each cable runs over two pulleys of its own individual carriage, and forms a downwardly extending loop between these two pulleys. A pulley block rides on each loop. All the pulley blocks are ordinarily connected to a scenery batten, from which the scenery is hung, but when specially required, individual pulley blocks may be used separately. Under no-load or minimum load conditions, the carriages may be easily moved along the track to place them in desired position, simply by manually pulling downwardly on one or the other of the two sections or reaches of the cable coming down from the carriage pulleys to the pulley block, the blocks having been lowered, of course, to a convenient working height close to the stage. Under normal load conditions, when the weight of scenery is suspended from the blocks, friction holds the carriages against movement.

摘要翻译： 为了升高和降低剧院风景，剧场的飞顶有一个水平的轨道，沿着轨道滑动的几个滑架可以沿着轨道移动到任何所需的位置，根据可能的不均匀或不均匀的选择 重量分布在待处理的风景中。 一系列电缆，一个用于每个托架，从普通的卷绕滚筒延伸到轨道的一端，然后到达轨道的相对端的锚固件。 每条电缆穿过自己的独立滑架的两个滑轮，并在这两个滑轮之间形成向下延伸的环。 一个滑轮块骑在每个回路上。 所有滑轮块通常连接到风景栏杆，风景挂起，但特别需要时，可以单独使用单个滑轮组。 在无负载或最小负载条件下，滑架可以容易地沿着轨道移动以将它们放置在期望的位置，简单地通过手动向下拉动两个部分中的一个或另一个或从滑架滑轮下来的电缆的到达部分 到滑轮块时，块被降低，当然是靠近舞台的方便的工作高度。 在正常负载条件下，当风挡重量从块上悬挂时，摩擦力使车架抵抗运动。