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2. 发明授权

US4400238A Apparatus for stretching an endless web 失效
标题翻译：用于拉伸无边网的装置
公开(公告)号：US4400238A
公开(公告)日：1983-08-23
申请号：US373113
申请日：1982-04-29
申请人： Peter P. Stanislaw , James S. Hicks
发明人： Peter P. Stanislaw , James S. Hicks
IPC分类号： D21F1/36 , B65H23/04 , D21F7/00 , D06C3/06
CPC分类号： D21F7/001
摘要： An apparatus for processing an endless web includes means for supporting the endless web at a first location and a roll for supporting the endless web at a second location. The roll has first and second ends. First and second carriages are engaged to first and second substantially parallel tracks respectively for rotatably supporting the first and second ends of the roll respectively in a normal operating position and for moving the roll relative to the support means along the tracks. A bridge connects the first and second carriages. Means are mounted to the bridge for lifting the roll at a location between the first and second ends, whereby the roll is supported by the lifting means and the first carriage, whereby the endless web may be inserted or removed over the second end of the roll.The lifting means includes a cradle for supporting the roll, means for moving the cradle into and out of a position underneath the roll and means for elevating the cradle while the cradle is in the position under the roll. In a first embodiment of the invention, the elevating means comprises an inflatable cushion adapted to be inflated and thereby raise the cradle and to be deflated and thereby lower the cradle. In a second embodiment, the elevating means includes a block adapted to rest on the ground, a first link pivotally mounted to the block and a second link pivotally mounted to the cradle. A pivot joins the other ends of the two links and means are provided for moving the pivot from a first position horizontally displaced from the first ends of the links, wherein the cradle is in a lowered position, and a second position where the pivot means is substantially vertically aligned with the block and the cradle, whereby the cradle is in an elevated position.
摘要翻译：一种用于处理环形网的设备包括用于在第一位置处支撑环形网的装置和用于在第二位置支撑环形网的卷。卷具有第一和第二端。第一和第二托架分别接合到第一和第二基本平行的轨道，用于分别在正常操作位置可旋转地支撑辊的第一和第二端，并且用于沿着轨道相对于支撑装置移动辊。桥梁连接第一和第二车厢。装置安装到桥上，用于在第一和第二端之间的位置提升辊，由此辊由提升装置和第一托架支撑，由此环形腹板可以在辊的第二端上插入或移除。提升装置包括用于支撑卷的支架，用于将托架移入和移出辊下方的位置的装置，以及用于在托架位于卷筒下方的位置升起托架的装置。在本发明的第一实施例中，提升装置包括适于充气的可充气垫，从而升起支架并且被放气并从而降低支架。在第二实施例中，升降装置包括适于搁置在地面上的块，枢转地安装到块的第一连杆和枢转地安装到支架的第二连杆。枢轴连接在两个连杆的另一端，并且提供装置用于使枢轴从第一位置移动，第一位置从链节的第一端水平移位，其中托架处于降低位置，第二位置，枢转装置是基本上垂直地与块和支架对准，从而托架处于升高位置。

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