共查询到20条相似文献,搜索用时 62 毫秒
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张小峰 《机电产品开发与创新》2013,26(4):106-107
行星架是行星传动的主要部件,行星架结构形式和制造质量对传动装置的承载能力、噪音和振动有很大影响。论文通过有限元法,对NGW型行星架进行分析,探求行星架优化的方法。 相似文献
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行星减速器中主要构件为太阳轮、行星轮、内齿轮、行星架等。行星轮的心轴和轴承就装在行星架上。行星架为基本构件,它是机构中承受外力矩最大的零件。行星架的结构设计和制造质量对各行星轮间的载荷分配以至传动装置的承载能力、噪音和振动等有很大影响。 合理的行星架结构应该重量轻、刚性好、便于加工和装配。其常见结构形式有双壁整体式、双壁分开式和单壁式3种。 由于我厂生产的行星减速器采用的行星轮较大,且行星轮里需安装轴承,故多采用双壁整体式 相似文献
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本文结合差动减速器行星架焊接过程中出现的问题,利用有限元原理及工具,模拟差动减速器行星架前后两侧板与销轴在不同的配合状态下,对行星架进行应力分析,结合分析结果对行星架前后两侧板与销轴之间的公差配合进行优化改进,改善加工制造. 相似文献
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行星变速箱广泛应用于各种车辆的传动系中。为获得结构合理、紧凑、性能好、可靠的传动装置,组成行星变速箱的行星机构应有多个评价指标。主要研究这种机构的运动学指标、性能指标和结构特征指标,并剖析其内在关系,为设计时的合理选择提供理论和技术依据。 相似文献
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本文主要讨论了行星变速箱方案机构参数的最优选择方法。基于分层降维离散变量优化方法,对建立的数学模型进行了优化计算。通过算例分析了该方法的有效性。 相似文献
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This paper proposes a novel fault diagnosis method based on variational mode decomposition (VMD) and generalized composite multi-scale symbol dynamic entropy (GCMSDE) to identify the different health conditions of planetary gearboxes. First, VMD is adopted to remove the noises and highlight the fault symptoms. Second, GCMSDE is utilized to extract the fault features from the denoised vibration signals. Third, the Laplacian score (LS) approach is employed to refine the fault features. Finally, the new features are fed into Softmax regression to identify the health conditions of planetary gearboxes. The proposed method is numerically and experimentally demonstrated to be able to differentiate seven localized fault types on the sun gear, planet gear and ring gear of planetary gearboxes. 相似文献
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通过对比新旧型风电增速箱行星架结构,并运用有限元进行分析,指出传统行星架结构的不足,分析新型行星架的优势,且提出需改进的措施和设计的要点。 相似文献
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To improve the dynamic performance and reduce the weight of the planet carrier in wind turbine gearbox, a multi-objective optimization method, which is driven by the maximum deformation, the maximum stress and the minimum mass of the studied part, is proposed by combining the response surface method and genetic algorithms in this paper. Firstly, the design points’ distribution for the design variables of the planet carrier is established with the central composite design (CCD) method. Then, based on the computing results of finite element analysis (FEA), the response surface analysis is conducted to find out the proper sets of design variable values. And a multi-objective genetic algorithm (MOGA) is applied to determine the direction of optimization. As well, this method is applied to design and optimize the planet carrier in a 1.5 MW wind turbine gearbox, the results of which are validated by an experimental modal test. Compared with the original design, the mass and the stress of the optimized planet carrier are respectively reduced by 9.3% and 40%. Consequently, the cost of planet carrier is greatly reduced and its stability is also improved. 相似文献