对手扶拖拉机振动问题的研究,必然要牵涉到其固有频率的确定。当固有频率与工作频率十分接近时,就要产生共振,而使之处于十分不利的情况下工作。这是不允许的。我们以工农-12为对象,用离心激振器来激振,使工农-12产生受迫振动,利用共振法来测定工农-12的固有频率。 一、测试设备、仪器线路及试验条件 Research on the vibration of walking tractors must involve the determination of its natural frequency. When the natural frequency and operating frequency are very close, it is necessary to produce resonance, leaving it to work in very adverse circumstances. This is not allowed. We used worker-peasant-12 as the object and excited the centrifugal vibration exciter to make the worker-peasant-12 produce forced vibration, and use the resonance method to determine the natural frequency of worker-peasant-12. First, the test equipment, equipment lines and test conditions