Variable-damping belt tensioner

Abstract

The utility model is suitable for the technical field of belt tensioning wheel and provides a variable resistance belt tensioning wheel, which comprises a mounting seat, a tensioning assembly is arranged on the mounting seat, a tensioning arm is arranged on the tensioning assembly, the setting of the tensioning assembly, the synchronous movement of the tension spring and the tensioning arm ensure that the tensioning wheel is always in contact with the belt, the tension of the belt is maintained moderate, the probability of belt loosening is reduced, the stability of the transmission system is improved, the stretching and compression of the tension spring are controlled by fluid damping effect, the change of the tension spring is more stable, the rapid adjustment of the tensioning wheel is avoided, the design improves the accuracy and reliability, the width of the fluid path of the drainage valve is adjusted by rotating the speed regulating handle, the fluid resistance is adjusted, and thus the damping is adjusted according to the specific requirements of the transmission system, and the performance is optimized; the setting of the reverse locking assembly realizes the reverse locking limitation of the tensioning wheel, and further improves the safety of the transmission system.

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