查询词典 tappet rod

Initially, assuming that the contact between cam and tappet is"dry contart", a dynamics model of Hertzin contact stiffness and impact damping is established. Next, with dynamic load on cam—tappet pair from the model, an analysis is made both to unsteady EHD oil film in cam—tappet pair under condition of full and partial lubrtication and to wear characteristics of cam profile. then, according to the fact that the lubrication in cam—tappet contact surface is EHD lubrication, taking the interaction between stiffness and damping of unsteady EHD oil film and rigidity of solid object contact into account, a dynamics equation of valve train relating to the dynamic effect of EHD oil film is built up and solved. Consequently, a further study is made on the dynamic characteristics of valve train under interaction of EHD oil film dynamic behavior and the problem of EHD lubrication in cam—tappet pair. Finally, the dynamic effect of full and partial EHD oil film is studied accordingly.

首先，通过对凸轮—挺杆接触为&干接触&的假设，建立了考虑赫兹&接触刚度&和冲击&阻尼&的配气机构动力学模型，用由此求得的凸轮—挺杆表面动载荷对凸轮—挺杆进行了全膜状态和部分膜状态非稳态弹流润滑分析，并研究了凸轮轮廓的磨损规律；然后，是在凸轮挺杆表面存在弹流动压油膜这一事实的基础上，相当于在动力学方程中考虑非稳态弹流油膜的&刚度&、&阻尼&和固体接触&刚度&的耦合作用，建立并求解了考虑弹流润滑行为动力学效应的配气机构的动力学方程，从而深入地研究了弹流润滑行为与动力学行为耦合作用下的配气机构动力学特征以及凸轮挺杆弹流润滑问题；作为前面工作的对应部分，考虑弹流油膜动力学效应的研究工作也同样分为全膜状态和部分膜状态进行。

According to the plane cross section assumption, configuration of a rod is expressed as a history of the cross section with arc coordinate. A special solution which stands for equilibrium in straight line state is obtained from differential equilibrium equation. Linear perturbation equation is derived and its general solution is obtained in which the integral constants are determined by constrained conditions at two ends of the rod. The condition of existence of non zero solution of the integral constants gives to the Greenhill formula of exact elastic rod model, which shows that the boundary of stable area is a closed curve and of symmetry, and inference of shearable and extensible to stability of the rod is depend on three factors: difference between flexibility of shear and extension of a section of the rod, bending stiffness and the length of the rod.

基于平面截面假定，弹性杆的位形表达为截面的弧坐标历程，根据平衡微分方程得到了两端受力螺旋作用时的直线平衡特解，导出了线性化扰动方程及其通解，积分常数根据两端铰支时的边界条件确定，并根据其存在非零解的条件得到弹性直杆精确模型的Greenhill公式，表明稳定域为一对称的封闭区域，拉/压和剪切对稳定性的影响取决于：拉/压柔度与剪切柔度之差，抗弯刚度和杆长这三个因素

Adopt at present most advanced large-scale SUPER SAP finite element structure analyse procedure to go on numerical value calculation for model of drilling rod, drilling rod whole stress simulation of state that receive show and reflect drilling rod various kinds of stresses under different working states distribute the characteristic clearly, make stress state of drilling rod reach visual, make people able to understand informations of drilling rod of stress status in depth too at the same time, so that the design of the improvement drilling rod constantly is in order to meet the demands of actual project.

采用当前最先进的大型SUPER SAP有限元结构分析程序对钻杆的模型进行了数值计算，得到的钻杆整体应力状态的模拟显示清楚地反映了钻杆在不同工作状态下的各种应力分布特征，同时也使钻杆的应力状态达到了可视化，使人们可以深入了解钻杆应力状态信息，以便不断的改进钻杆的设计以满足实际工程的需要。

At the same time, sales of wear resistant welding rod, cast iron welding rod, stainless steel welding rod, casting tungsten carbide welding rod, low carbon steel welding rod, factory products:úspecial wear-resistant electrode, Sham Tseng bit special wear-resistant electrode, with wear-resistant welding rod mill, cement brick special wear-resistant electrode, pears seeder cultivator blades and other special wear-resistant electrode, the above Domestic Product of several ministerial-level enterprise year-round use.

同时销售耐磨焊条、铸铁焊条、不锈钢焊条、铸造碳化钨焊条、低碳钢焊条，本厂拳头产品：木炭机专用耐磨焊条、深井钻头专用耐磨焊条、粉碎机用耐磨焊条、砖瓦厂水泥厂专用耐磨焊条、播种机旋耕梨刀片专用耐磨焊条等，以上产品数家国内厅部级企业常年使用。

Is professional development, manufacturing, sales campaign vehicle hydraulic Tappet, machinery Tappet professional production companies.

玉环县昌业液压挺杆有限公司是专业开发、制造、销售系列汽车液压挺杆、机械挺柱的专业生产企业。

Yu-sum Taizhou Machinery Co., Ltd. located in the East China Sea coast, the beautiful and richly endowed Yuhuan peninsula, is the early Chinese automobile engine hydraulic and mechanical Tappet Tappet the specialized production enterprises.

台州森裕机械有限公司位于东海之滨，美丽富饶的玉环半岛上，是中国早期汽车发动机液压挺杆和机械式挺杆的专业化生产企业。

Our leading products, i.e., motorcycle brake disc, automatic slack adjuster and engine tappet have been in the world widely recognized. Air disc brake and electromagnetic fan clutch has successfully launched in the market. These products are marketed and distributed in Asia, Europe, North America and South America. We are one of the largest manufacturers and exporters of motorcycle brake disc, automatic slack adjuster and engine tappet in China.

集团主导产品两轮摩托车制动盘、汽车制动间隙自动调整臂、发动机气门挺柱均已成为国内外知名品牌，盘式制动器、电磁风扇离合器产品也成功推向市场，产品畅销亚洲、欧洲、美洲等几十个国家和地区，是国内最大的两轮车制动盘出口基地、国内最大的发动机气门挺柱和汽车制动间隙自动调整臂生产商。

Our leading products, i.e., motorcycle brake disc, automatic slack adjuster and engine tappet have been world widely recognized. Air disc brake and electromagnetic fan clutch has successfully launched in the market. These products are marketed and distributed in Asia, Europe, North America and South America. We are one of the largest manufacturers and exporters of motorcycle brake disc, automatic slack adjuster and engine tappet in China.

集团主导产品：两轮摩托车制动盘、汽车制动间隙自动调整臂、发动机气门挺柱均已成为国内外知名品牌，盘式制动器、电磁风扇离合器产品也成功推向市场，产品畅销亚洲、欧洲、美洲等几十个国家和地区，是国内最大的两轮车制动盘出口基地、国内最大的发动机气门挺柱和汽车制动间隙自动调整臂生产商。

Using cam for 492Q engine and coupled spherical tappets (R750mm, R2000mm) an investigation in the influence o tappet rotation on anti-scuffing property of camtappet is carried out on TM-1 cam-tappet wearing tester at speed of camshaft 1500r/min and 1050r/min.

本文对498Q发动机凸轮和与之配对的球面挺柱(R750mm、R2000mm)分别在凸轮轴转速为1500r/min和1050r/min两种工况下，在TM—1型凸轮挺柱磨损试验机上，进行了挺柱转动对凸轮挺柱摩擦副抗擦伤性能影响的试验。

Studied pumping well system in this article, the intermediate power transmission parts uesed flexible rod, the downhole assembled rod pump, the ground driving device would transform up and down reciprocating motion into rotating motion. With own mechanism rounded trip for the downhole flexible rod and pump. Wellhead polished rod changed common stell for flexible polished rod. It was a innovation in theory study and craftwork method. It was a remarkable feature in this article, because these innovations were not studied and attempted for prehuman.

本文所研究的抽油系统，中间动力传动部件采用柔性抽油杆，井下配套杆式抽油泵，其地面驱动装置将传统抽油机驴头的上下往复运动变为旋转运动，并且能够利用自身结构对井下柔性抽油杆及泵体实现起下作业，井口光杆也由普通钢质光杆变为柔性光杆，这是理论研究和工艺方法的创新，这些创新都是前人所没有研究和尝试的，是本文的一大显著特点。

But this is impossible, as long as it is engaging in a market economy, there are risks in any operation.

但是，这是不可能的，只要是搞市场经济，是有风险的任何行动。

We're on the same wavelength.

我们是同道中人。