求翻译：本次设计的主要设计难点在于零部件的正确选择以及结构的整体布置。首先，利用加工的轮子做主导轮，然后用自动化工业中比较常见的滚轮滚针轴承做侧导轮，这样能够使输送平台有一个平稳的升降过程；另一方面，使用链条来带动整个输送平台的升降，这样的设计能够很大的节约空间，并且能有一个安全稳定的升降过程。是什么意思？

The main design difficulty is the correct choice of components and the overall layout of the structure. First, the use of processing the wheels of the leading wheel, and then do the side guide wheel are more common in the automation industry, needle roller bearings, this will enable the delivery pla

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This design main design difficulty lies in the spare part the correct choice as well as the structure whole arrangement.First, takes responsibility using the processing wheel the guide pulley, then the quite common hoop roller pin axis makes to order the side guide pulley with the automated industry

Main design difficulties of this design is that the correct choice of components and the overall layout of the structure. First of all, led by using machined wheels wheel, and automated industrial common roller bearings in idler pulley, this will enable transmission platform has a stationary lifting

正在翻译，请等待...