二级往复式小型空压机动平衡优化设计与试验验证

OPTIMAL DESIGN OF DYNAMIC BALANCE OF TWO-STAGE RECIPROCATING SMALL AIR COMPRESSOR AND COUPLING VIBRATION TEST ANALYSIS OF MOTOR

二级往复式小型无油空压机凭借其排气压力高、功耗小的优点,在各大领域中得到了广泛应用,然而振动噪声问题严重影响其使用舒适性。为改善空压机振动,建立了二级往复式空压机动平衡理论,并采用Adams软件进行虚拟样机仿真,建立目标函数对其曲轴活塞系统的平衡块配重开展优化设计。随后,鉴于电动机与空压机结构本身联系的紧密性,对曲轴活塞系统与电动机转子整体进行了动平衡的理论研究和分析,并对动平衡方案进行了进一步的完善。基于以上动平衡理论进行振动噪声测试试验,噪声均有一定程度的降低,验证了二级往复式小型空压机动平衡理论的合理性。

Two-stage reciprocating small oil-free air compressors have been widely used in various fields due to their high exhaust pressure and low power consumption,but the vibration and noise problems seriously affect the comfort of use.In order to improve the compressor vibration,the theory of dynamic balancing of a two-stage reciprocating air compressor was developed and a virtual prototype simulation was carried out using Adams software to establish an objective function to optimize the balance block counterweight of its crankshaft-piston system.Subsequently,in view of the close connection between the motor and the compressor structure,the theoretical study and analysis of the dynamic balance of the crankshaft piston system and the motor rotor as a whole was carried out,and the dynamic balance scheme was further improved.Based on the above dynamic balance theory,vibration and noise tests are carried out and the noise are all reduced to a certain extent,verifying the reasonableness of the dynamic balance theory of the two-stage reciprocating small air compressor.