2024年4月23日发(作者：)

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专利名称：Vertical conveyor

发明人：Burton R. Freeman

申请号：US06/003875

申请日：19790116

公开号：US04219301A

公开日：19800826

摘要：A vertical conveyor comprising an upstanding support including spaced- apart,

horizontally spaced, vertically disposed side frame members. A platform for supporting

the object to be conveyed is positioned between the frame members and is vertically

movable thereon from a lowermost position to an uppermost position. A first elongated

power cylinder is mounted on the support adjacent one of the frame members and is

substantially vertically disposed. A piston is positioned within the first power cylinder and

has cables secured thereto which extend outwardly from opposite ends of the cylinder.

The cables are connected to the upper and lower portions of the platform so that

downward movement of the piston in the first power cylinder will cause the platform to

be vertically moved upwardly and so that upward movement of the piston in the first

power cylinder will cause the platform to be vertically moved downwardly. A first limit

switch is mounted on the support and is engaged by the object when the object has been

placed on the platform while the platform is in its lowermost position. Actuation of the

first limit switch causes the first power cylinder to be actuated so that the platform is

raised from the said lowermost position to the said uppermost position. A horizontally

disposed second power cylinder is mounted on the support adjacent the upper end

thereof and has a push-off rod movably mounted therein which is movable from a

retracted position to an extended position. The push-off rod pushes the object on the

platform onto a discharge conveyor when the platform has been raised to its uppermost

position. A second limit switch is mounted on the support and is closed when the

platform reaches its uppermost position to actuate the second power cylinder so that

the object is pushed from the platform onto the discharge conveyor. A third limit switch

is positioned on the discharge conveyor and is closed by the object as the object passes

thereover so that the push-off rod of the second power cylinder is retracted. The object

then engages a fourth limit switch which causes the first power cylinder to be reversed so

that the platform is lowered to its lowermost position so as to be able to receive another

object thereon for the next cycle.

申请人：FREEMAN, BURTON R

代理机构：Zarley, McKee, Thomte, Voorhees & Sease

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