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公开(公告)号：US5197571A
公开(公告)日：1993-03-30
申请号：US858365
申请日：1992-03-26
摘要： An elevator cable safety brake is disclosed. The brake includes a first housing which is slidably mounted in a second housing. The first housing has an opening through which the elevator cables can pass. On one side of the elevator cables is located a first brake pad which is carried by the first housing. On the other side of the opening is located a second brake pad which is generally wedge shaped. The second brake pad is carried on a sled which is slidably housed within the first housing. The second brake pad may be moved between a free running position and a braking position. The wedge shaped second brake pad may be selectively released under certain trip conditions from the free running position to the braking position. Such conditions include the unintended overspeed operation of the elevator, a power failure, or the elevator commencing movement before the elevator doors are fully closed. A governor trips a trip lever effecting the release of the second wedge shaped brake pad. The slidable interaction between the sled and the first housing and the second housing enables the brake device to be self centering around the cables during the braking action. In an alternate embodiment the safety brake works in both the up and down directions.
摘要翻译： 公开了电梯电缆安全制动器。 制动器包括可滑动地安装在第二壳体中的第一壳体。 第一壳体具有电梯电缆通过的开口。 在电梯电缆的一侧设有由第一壳体承载的第一制动衬块。 在开口的另一侧设有大致楔形的第二制动垫。 第二制动衬块承载在可滑动地容纳在第一壳体内的滑板上。 第二制动衬块可以在自由运行位置和制动位置之间移动。 楔形第二制动衬块可以在特定跳闸条件下从自由运行位置选择性地释放到制动位置。 这种情况包括电梯的意外超速操作，电源故障或电梯门完全关闭之前的电梯开始运动。 调速器跳闸来实现第二楔形制动片的释放。 滑板与第一壳体和第二壳体之间的可滑动的相互作用使得制动装置能够在制动动作期间围绕电缆自对中。 在替代实施例中，安全制动器在上下方向上工作。
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公开(公告)号：US4159604A
公开(公告)日：1979-07-03
申请号：US867458
申请日：1978-01-05
申请人： Michael P. Burrell
发明人： Michael P. Burrell
摘要： The disclosure relates to the type of joist having an upper chord in the form of an inverted top-hat channel into which an insert is forced. The inner faces of the side walls of the channel converge towards one another at the top of the channel and the width of the bottom of the channel is greater than the width of the bottom of the insert.
摘要翻译： 本公开涉及具有倒立的顶帽通道形式的上弦的托梁类型，其中迫使插入物。 通道的侧壁的内表面在通道的顶部彼此相聚，并且通道底部的宽度大于插入件底部的宽度。
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公开(公告)号：US5101937A
公开(公告)日：1992-04-07
申请号：US709731
申请日：1991-06-03
摘要： An elevator cable safety brake is disclosed. The brake includes a first housing which is slidably mounted in a second housing. The first housing has an opening through which the elevator cables can pass. On one side of the elevator cables is located a first brake pad which is carried by the first housing. On the other side of the opening is located a second brake pad which is generally wedge shaped. The second brake pad is carried on a sled which is slidably housed within the first housing. The second brake pad may be moved between a free running position and a braking position. The wedge shaped second brake pad may be selectively released under certain trip conditions from the free running position to the braking position. Such conditions include the unintended overspeed operation of the elevator, a power failure, or the elevator commencing movement before the elevator doors are fully closed. A governor trips a trip lever effecting the release of the second wedge shaped brake pad. The slidable interaction between the sled and the first housing and the second housing enables the brake device to be self centering around the cables during the braking action. In an alternate embodiment the safety brake works in both the up and down directions.
摘要翻译： 公开了电梯电缆安全制动器。 制动器包括可滑动地安装在第二壳体中的第一壳体。 第一壳体具有电梯电缆通过的开口。 在电梯电缆的一侧设有由第一壳体承载的第一制动衬块。 在开口的另一侧设有大致楔形的第二制动垫。 第二制动衬块承载在可滑动地容纳在第一壳体内的滑板上。 第二制动衬块可以在自由运行位置和制动位置之间移动。 楔形第二制动衬块可以在特定跳闸条件下从自由运行位置选择性地释放到制动位置。 这种情况包括电梯的意外超速操作，电源故障或电梯门完全关闭之前的电梯开始运动。 调速器跳闸来实现第二楔形制动片的释放。 滑板与第一壳体和第二壳体之间的可滑动的相互作用使得制动装置能够在制动动作期间围绕电缆自对中。 在替代实施例中，安全制动器在上下方向上工作。
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