Integrated vibration damping belt pulley characteristic tester

Abstract

The invention relates to an integrated vibration damping belt pulley characteristic tester comprising a testing stand, a servo oil station, a sensing part, an auxiliary member and an industrial control cabinet; an environment box, a slide rail and a vibration exciter are arranged on a pedestal of the testing stand; the slide rail is provided with a servo power slide unit, an endurance loading slide unit and an inherent frequency loading slide unit; the servo power slide unit is provided with an actuator; the endurance loading slide unit is provided with a fixed shaft; the inherent frequency loading slide unit is provided with a test shaft; the sensing part comprises an angle encoder, a torque sensor and an accelerometer; the auxiliary member comprises a workpiece disc and a loading rod; the industrial control cabinet is used for controlling the actuator, gathering and processing data uploaded by the sensing part, and displaying and managing test results. The tester can carry out a frequency sweep inherent frequency test, an aged test and an endurance test, thus providing wider inherent frequency test frequency and greater exciting torques.

Description

technical field [0001] The invention relates to a characteristic test device of an automobile mechanical part, in particular to an integrated vibration-absorbing pulley characteristic test device. Background technique [0002] The vibration generated by the car engine will not only destroy the comfort of the car, reduce the NVH (Noise Vibration and Harshness) performance of the car, but also seriously affect the working life and work efficiency of the car. The torsional vibration of the crankshaft shafting is part of the engine vibration. The torsional vibration is essentially the periodic torque imbalance of the shafting system, which is manifested as the transient fluctuation of the speed of the transmission shaft and the generation of irregular dynamic torque. At present, the common method to reduce the torsional vibration of the crankshaft shaft system of an automobile is to install a vibration-absorbing pulley at the free end of the crankshaft. The vibration-absorbing ...

AI Technical Summary

Problems solved by technology

At present, the domestic vibration-absorbing pulley characteristic test is mainly to test the natural frequency, fatigue durability and aging resistance separately. This is because the fatigue durability test requires a large torque power, and the hydraulic servo system is generally used as the power source. The frequency of the hydraulic servo system does not meet the frequency requirements of the frequency sweep natural frequency test, and the anti-aging test needs to be carried out in a specific environment (such as temperature or ozone requirements), which results in the need to use multiple a test bench and special environmental treatment, Do not Meet the requirements of convenience, economy and portability

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