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1. 发明授权

US08424846B1 Overload warning system for a winch hoist 有权
标题翻译：绞车起重机超载警告系统
公开(公告)号：US08424846B1
公开(公告)日：2013-04-23
申请号：US12885783
申请日：2010-09-20
申请人： Richard A. Perduta , David B. Hallen
发明人： Richard A. Perduta , David B. Hallen
IPC分类号： B21F9/00 , B66F3/00
CPC分类号： B66D3/14 , Y10T74/20744 , Y10T403/11
摘要： An overload warning system for a winch hoist of the type that includes a drum that rotates about a drum shaft, a handle that is received in a socket, wherein the handle can be used to turn the drum, and a movable frame that is located between the socket and the housing. The socket is coupled to the drum shaft. There is a shear pin with one end embedded in the frame and the other end embedded in the socket, the shear pin defining a relatively weak shear zone located between the frame and the socket. There is an elongated opening defined in the socket and a projection projecting from the frame and into or through the elongated opening. If the shear pin fails under rotational load applied through the handle, the socket will rotate relative to the frame until the edge of the elongated opening contacts the projection. The socket movement provides tactile feedback that the shear pin has failed, while maintaining control over the hoist operation via the handle.
摘要翻译：一种用于绞盘式起重机的过载报警系统，其包括围绕鼓轴旋转的滚筒，容纳在插座中的手柄，其中手柄可用于转动滚筒，以及可移动框架，其位于插座和外壳。插座连接到鼓轴。存在一个剪切销，其一端嵌入框架中，另一端嵌入插座中，剪切销限定位于框架和插座之间的相对较弱的剪切区域。在插座中限定有一个细长的开口，以及从该框架伸出并穿过细长的开口的突起。如果剪切销在通过手柄施加的旋转载荷下失效，则插座将相对于框架旋转，直到细长开口的边缘接触突起。插座运动提供了剪切销失效的触觉反馈，同时通过手柄控制起重机操作。

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