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指出了皮带及链传动现有张紧方法的缺点，设计了一种结构简单、工作可靠的用于皮带及链传动的恒张力控制装置，该装置能自动调整压在皮带或链上的力，在很大挠角范围内保持其张力基本恒定。
The shortcomings of existing tensioning methods of belt and chain drive are pointed out. A simple and reliable working constant tension control device for belt and chain drive is designed, which can automatically adjust the force of pressing on the belt or chain, Maintains its tension substantially constant over a wide range of bends.