公开(公告)号：US09527673B2

公开(公告)日：2016-12-27

申请号：US14780192

申请日：2014-04-22

Applicant: Laitram, L.L.C.

Inventor： David W. Bogle ,  Jonathan W. Mays

IPC: B65G21/18 ,  B65G23/44 ,  B65G43/00

CPC classification number: B65G21/18 ,  B65G23/44 ,  B65G43/00

Abstract: A spiral conveyor and a method for taking up slack in a modular conveyor belt traveling a helical path. The spiral conveyor includes a rotating cylindrical drive drum with parallel drive members extending from the bottom to the top of the drum on its periphery. Each drive member includes an outwardly protruding ridge extending from the bottom to the top of the drum for engaging the inside edges of the belt. A motor-driven take-up shaft and shaft-mounted sprocket set takes up slack in the belt after its release from the drum. To control tension at the discharge of the belt from the drive drum, the take-up motor is normally operated in a closed-loop control mode, but switches to an open-loop constant-speed control mode when the take-up motor stalls.

Abstract translation: 一种螺旋输送机和一种用于在传播螺旋路径的模块化输送带中卷起松弛的方法。 螺旋输送机包括旋转的圆柱形驱动滚筒，平行的驱动部件在其周边从滚筒的底部延伸到顶部。 每个驱动构件包括从底部到鼓的顶部延伸的向外突出的脊，用于接合皮带的内边缘。 电机驱动的卷取轴和轴安装的链轮组在从滚筒上释放后，松弛带子。 为了控制带从驱动鼓排出的张力，卷取电机通常以闭环控制模式运行，但当卷取电机停转时切换到开环恒速控制模式。

公开(公告)号：US20160046447A1

公开(公告)日：2016-02-18

申请号：US14780192

申请日：2014-04-22

Applicant: LAITRAM, L.L.C.

Inventor： David W. Bogle ,  Jonathan W. Mays

IPC: B65G21/18 ,  B65G43/00 ,  B65G23/44

CPC classification number: B65G21/18 ,  B65G23/44 ,  B65G43/00

Abstract: A spiral conveyor and a method for taking up slack in a modular conveyor belt traveling a helical path. The spiral conveyor includes a rotating cylindrical drive drum with parallel drive members extending from the bottom to the top of the drum on its periphery. Each drive member includes an outwardly protruding ridge extending from the bottom to the top of the drum for engaging the inside edges of the belt. A motor-driven take-up shaft and shaft-mounted sprocket set takes up slack in the belt after its release from the drum. To control tension at the discharge of the belt from the drive drum, the take-up motor is normally operated in a closed-loop control mode, but switches to an open-loop constant-speed control mode when the take-up motor stalls.

Abstract translation: 一种螺旋输送机和一种用于在传播螺旋路径的模块化输送带中卷起松弛的方法。 螺旋输送机包括旋转的圆柱形驱动滚筒，平行的驱动部件在其周边从滚筒的底部延伸到顶部。 每个驱动构件包括从底部到鼓的顶部延伸的向外突出的脊，用于接合皮带的内边缘。 电机驱动的卷取轴和轴安装的链轮组在从滚筒上释放后，松弛带子。 为了控制带从驱动鼓排出的张力，卷取电机通常以闭环控制模式运行，但当卷取电机停转时切换到开环恒速控制模式。