共查询到20条相似文献，搜索用时 62 毫秒
1.
齿轮泵的困油现象分析及其解决措施 总被引：1，自引：0，他引：1
马军 《淮南职业技术学院学报》2006,6(1):70-71,74
为解决一直困扰齿轮泵发展问题的齿轮泵的困油现象,从斜齿轮泵和直齿轮泵的困油容积变化方面来分析困油现象,采用数学推导的方法,得出开设卸荷槽采用减小齿顶高系数来减小困油现象,同时也不增加齿轮泵的外形尺寸的结论,可以作为进一步研究作参考。 相似文献
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基于Solidworks的齿轮泵工作原理动态仿真研究 总被引：1，自引：0，他引：1
为了提高学生对齿轮泵结构和工作原理的认识和掌握,本文介绍了基于Solidworks的齿轮泵工作原理动态仿真。通过对齿轮泵结构的分析,主要完成了齿轮泵组成零件的实体建模、零件的动态装配和工作原理的动态仿真。利用Solidworks软件制作的齿轮泵结构装配动态仿真和工作原理的动态仿真可以保存为AVI格式,有利于该仿真的普及和推广。 相似文献
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王显彬 《赤峰学院学报(自然科学版)》2012,(20):101-103
本文介绍了偶数齿的平面式复合齿轮泵的结构原理,对平面式复合齿轮泵的流量特性进行了理论分析和仿真研究,得到了如下结论：与普通外啮合齿轮泵相比,齿数相同时,复合齿轮泵的排量、平均流量和瞬时流量均增加了一倍,而体积未增加一倍。因此,复合齿轮泵具有较高的功率密度。 相似文献
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讨论了直线共轭内啮合齿轮泵内外转子的测量方法,推导了圆棒测量跨距的计算公式,并通过实例计算和作图验证了此方法的正确性.应用量棒跨距值可以对转子的齿厚误差进行控制,为提高直线共轭齿廓内啮合齿轮泵内外转子的制造精度提供了理论依据. 相似文献
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外啮合齿轮泵,它具有结构简单,制造方便,价格低廉,自吸能力强,维修容易和对油液的污染不敏感等特定。尤其是低压齿轮泵,被许多大型船舶用作滑油泵,为船舶柴油发电机原动机的自带滑油泵,船舶主机凸轮轴滑油泵及燃油泵等等。但在使用上发现了故障多,寿命低,引起了我们的关注。 相似文献
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尧燕 《深圳职业技术学院学报》2013,12(3):8-10
鉴于传统CAD装配的不通用性,以齿轮泵为例,基于VRML技术,通过CAD建模以及数据转换再建虚拟场景,利用VRML的检测器和传感器等技术,结合Java和Java Applet等程序控制技术,建立了一个基于网络的虚拟装配仿真平台． 相似文献
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针对可装配性的特点,分析了影响可装配性的12个因素.基于模糊数学理论,采用模糊评价方法,提出了针对可装配性的模糊综合评价过程的实现方法.以CB型齿轮泵为例进行了具体的计算,对产品的可装配性作了评价分析. 相似文献
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吴建宁 《Journal of Zhangzhou Technical Institute》2009,11(2):18-20,24
目前自卸车的倾卸机构主要分为直推式和间接式两种形式,微型、轻型自卸货车较多采用结构简单,成本较低的直推式.着重介绍直推式自卸车的倾卸机构的设计、液压缸和齿轮泵的选择等要点及注意事项,为平板车改装后推式自卸车的设计提供参考. 相似文献
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罗艳萍 《读与写:教育教学刊》2008,5(6)
The communication of people partially is the communication of cultures. Culture has a direct effect on international commercial activities in all aspects. Different conceptions about time, space, equality, law and the like, lead people to deal with things in different ways. So to know cultures of the counterpart is to facil-itate our enterprises so as to have a smooth and successful communication in commercial activity. 相似文献
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Richard Denner 《海外英语》2007,(4):14-15
Rosco and I wait for the fishermen to return.I sit at a wooden bench near the store at Mt.Baker Resort and watch the clouds change shape. Rosco has my belt around his neck and an eight foot tow chain hooked to a tree. Dogs must be on a leash. Ducks and rabbits are loose. 相似文献
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Given a graph G,a subgraph C is called a clique of G if C is a complete subgraph of G maximal under inclusion and |C|≥2. A clique-transversal set S of G is a set of vertices of G such that S meets all cliques of G. The clique-transversal number, denoted as TC (G), is the minimum cardinality of a clique-transversal set in G. The clique-graph of G, denoted as K (G), is the graph obtained by taking the cliques of G as vertices, and two vertices are adjacent if and only if the corresponding cliques in G have nonempty intersection. Let F be a class of graphs G such that F={G|K(G) is a tree}. In this paper the graphs in F having independent clique-transversal sets are shown and thus TC (G)/|G|≤1/2 for all G ∈ F. 相似文献
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邱崇丙 《唐山师范学院学报》2014,(1):21-23
汉字的六书,《说文》对“转注”一类,语焉不详。后世学者提及转注,也仅限于许慎所举出的例字。《汉字例说》一文,作者从转注的角度综合考虑,对部分现代常用字作了分析,跟传统的解释有所不同。希望能抛砖引玉,互相切磋,以推进学术研究。 相似文献
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陈美曦 《山东教育学院学报》2008,23(2):103-107
Different nations have different social cultures, and the social culture of every nation is developing with the development of the nation, language is greatly influenced by social culture, which enables language to possess national and historical characteristics. Word is the smallest, independent, meaningful linguistic unit of language. It can well reflect the national and historical characteristics. From synchronic aspect, the social and cultural influence on word meaning is mainly embodied in conceptual and associative meanings of word. The incorrespondence of word meaning is a phenomenon that exists in both conceptual and associative meanings of word among different languages. From diachronic aspect, the development of social culture causes some changes of word meaning to some extent. Therefore, social culture plays a key role in vocabulary learning and mastery of a language. 相似文献
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Rachel Zupek 《海外英语》2007,(11):40-41
我们绝大部分人都同意一件事情——我们喜欢金钱。但是你对金钱的喜欢之情足够到让你创立一份事业么?.财富通常被人忽视,主要在于人们不能真正了 相似文献
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《海外英语》2007,(4):36
There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love. 相似文献
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YANGShiguo 《重庆大学学报(英文版)》2004,3(1):86-88
The problem on the geometrc inequalities involving an n-dimensional simplex and its inscribed simplex is studied. Aninequality is established, which reveals that the difference between the squared circumradius of the n-dimensional simplex andthe squared distance between its circumcenter and barycenter times the squared circumradius of its inscribed simplex is not lessthan the 2(n-1)th power of n times its squared inradius, and is equal to when the simplex is regular and its inscribed siplex is atangent point one. Deduction from this inequality reaches a generalization of n-dimensional Euler inequality indicating that thecircumradius of the simplex is not less than the n-fold inradius. Another inequality is derived to present the relationship betweenthe circumradius of the n-dimensional simplex and the circumradius and inradius of its pedal simplex. 相似文献