切丝机铜排链整体拆装辅助装置的设计与应用

为解决切丝机铜排链保养过程中劳动强度大、耗费时间长等问题，设计了一种铜排链整体拆装辅助装置。该装置由支撑导向机构、旋转牵引机构和机架组成，利用支撑导向机构使铜排链转向以降低辅助装置占地面积；采用旋转牵引机构，通过人工转动手柄使牵拉扁带收紧缠绕以牵引铜排链，并利用减速箱将牵引力从1 000 N降低至40 N；机架具有固定装置和转运铜排链等功能，有限元仿真结果显示机架水平变形量满足工作要求。以SQ34型切叶丝机、SQ35型切梗丝机、EVO型切叶丝机为对象对辅助装置进行测试，结果显示:使用辅助装置后，铜排链的平均拆卸时间减少9.1 min/次，平均安装时间减少11.3 min/次，整体拆装时间减少25.5%。该技术可为提高切丝机保养效率提供支持。 

Design and application of device for removing and installing compression band unit in tobacco cutter

To facilitate the maintenance of compression band unit in tobacco cutter, a device for removing and installing the whole compression band unit was designed. The device is composed of a support guide mechanism, a rotatable traction mechanism and a bracket. The support guide mechanism is used to turn the compression band unit for reducing the footprint of the device. The rotational traction mechanism is used to tension a flat belt and pull the compression band unit via rotating a handle manually, where a gearbox is used to reduce the traction force from 1 000 N to 40 N. The bracket is configured to hold the device in position and transfer the compression band unit; the deformation of the bracket in the horizontal direction is verified with the finite element simulation. The designed device was tested on SQ34 tobacco cutter, SQ35 tobacco stem cutter and EVO tobacco cutter. The results showed that the average time for compression band unit disassembling reduced by 9.1 min, that for assembling time reduced by 11.3 min, and the total disassembling and assembling time decreased by 25.5%. This technology provides a support for promoting the maintenance efficiency of tobacco cutter.