公开(公告)号：EP1918242A1

公开(公告)日：2008-05-07

申请号：EP07254246.7

申请日：2007-10-26

申请人： Columbus McKinnon Corporation

发明人： Brighton, James J ,  Darling, Samuel J. ,  Kary, Phillip W.

IPC分类号： B66D3/18 ,  B66D3/24

CPC分类号： B66D1/56 ,  B66D1/485 ,  B66D3/18 ,  B66D3/24

摘要： A hoist limiting system (15) comprising a frame (16), a hoist drum or sprocket (17) supported by the frame and rotatable about a hoist axis ( x-x ), a hoist driver configured to rotate the hoist drum, a hoist line (18) in engagement with the hoist drum, at least one gear (20) mechanically coupling the hoist driver and hoist drum and configured to rotate about a gear axis ( x-x ), the gear having a face (21) that rotates about the gear axis, a first proximity limit switch (26) adjacent the rotating face such that the rotating face moves relative to the proximity switch and a second proximity limit switch (28) adjacent the rotating face such that the rotating face moves relative to the second proximity switch, the first and second proximity switches configured to sense the presence or absence of the face and communicating with a controller (29), the first and second proximity switches, the control unit, and the hoist driver configured to prevent the hoist drum from rotating in the upward direction and in the downward direction as a function of the signals from the first and the second proximity switches. The gear has four elongated slots (22-25) arranged around the gear axis, the switches being arranged to sense the slots.

摘要翻译： 一种起重限制系统（15），包括框架（16），由框架支撑并可围绕提升轴线（xx）旋转的提升滚筒或链轮（17），提升驱动器，其构造成使提升卷筒旋转，提升线 至少一个齿轮（20），机械地联接起重机驱动器和提升滚筒并且构造成围绕齿轮轴线（xx）旋转，所述齿轮具有围绕齿轮轴线旋转的面（21） 相邻于所述旋转面的第一接近限位开关（26），使得所述旋转面相对于所述接近开关移动;以及邻近所述旋转面的第二接近限位开关（28），使得所述旋转面相对于所述第二接近开关移动， 所述第一和第二接近开关被配置为感测所述面部的存在或不存在以及与控制器（29）通信，所述第一和第二接近开关，所述控制单元和所述提升驱动器构造成防止所述提升滚筒在所述控制器 向上 作为来自第一和第二接近开关的信号的函数的方向和向下的方向。 齿轮具有围绕齿轮轴布置的四个细长槽（22-25），开关被布置成感测槽。