对激励频率下的桥式起重机减速器箱体进行了频率响应分析,得到了箱体各轴承孔处的频率位移响应曲线,并找出了在外部激振力下箱体最大位移响应位置。频响分析结果表明,在规定转速下的齿轮啮合频率可以避开箱体的固有频率,不会引起箱体共振。 The frequency response analysis of overhead traveling crane gear box under the excitation frequency was carried out. The response curve of the frequency displacement at each bearing hole of the box was obtained and the maximum displacement response position under the external excitation force was found out. The results of frequency response analysis show that the meshing frequency of gears under the specified speed can avoid the natural frequency of the box and will not cause the resonance of the box.