Belt drive system dynamic performance testing working circuit and working method

Abstract

The invention relates to a belt driving system dynamic performance test working circuit and a working method. A test platform, a servo motor, an input shaft, a driving wheel, a belt, a driven wheel, an output shaft, a tensioner and an idle pulley are included. A laser displacement sensor is used to measure the transverse vibration of a belt section when a belt is running. A laser rotation speed sensor is combined with a reflective pulse generated by reflective paper attached to the driving wheel and the driven wheel to measure a rotation speed. A pressure sensor is used to measure the belt pressing force of the idle pulley, and a belt tension is obtained through inverse calculation. A potentiometer is used to measure the shimmy of the tensioner. A magnetic powder brake is used to provide aload torque for a belt drive system. A torque sensor is used to measure the load torque value of the belt drive system. The structure is simple and is easy to realize, and cost is low. Through changing the types of belt pulleys, a variety of belt drive system dynamic characteristic test platforms can be acquired. And the test platform is taken as the experimental verification platform of a belt drive system dynamic model so as to provide guidance for the design of an engine accessory transmission system.

Description

technical field [0001] The invention relates to a dynamic performance testing platform of a belt transmission system, which belongs to the field of electromechanical integration, and in particular to a working circuit and a working method for testing the dynamic performance of a belt transmission system. Background technique [0002] The belt drive system, especially the V-belt drive system is widely used in the engine accessory wheel train, which is mainly composed of a V-belt, a crankshaft pulley, a tensioner, an alternator pulley, a water pump pulley, an oil pump pulley, Composed of accessory wheels such as air-conditioning compressor pulleys. Compared with ordinary V-belts, multi-V belts have lower bending stiffness and have multiple ribs (large contact area), so the structure of multi-V belt transmission system is more compact, the load capacity is stronger, and there are more driven accessories. Since the tensioner contains a spring damping mechanism, it is mainly use...

AI Technical Summary

Problems solved by technology

At present, the design and layout of the engine accessory gear train is mainly carried out through theoretical analysis, but the theoretical analysis has greatly simplified the V-belt and each accessory wheel, which cannot accurately reflect the dynamic performance of the V-belt transmission system, causing many problems. When the V-belt transmission system designed at that time actually works, the tension of the V-belt fluctuates too much, the V-belt and the tensioner wear prematurely, the service life is short, and the vibration and noise of the entire transmission system are too large.

Therefore, the design scheme of the engine accessory gear train proposed only by theoretical analysis can no longer meet the requirements for higher performance of the engine accessory gear train at the present stage, and it is necessary to verify and improve the theoretical model with experiments

However, in actual work, due to factors such as the compact structure of the engine accessory gear train, many dynamic characteristics such as belt tension fluctuations cannot be measured, which seriously affects the performance evaluation of the designed engine accessory gear train.

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