The complete model of locomotive and vehicle and the exact motion equations of wheel-set are established, in which, three-dimension wheel/rail contact geometry is taken into account and the Kalker's creep theory is employed to analyze the effects of the contact region of wheel/rail. An iterative procedure of solving wheel/rail creep force is proposed to improve the existed calculating method. Finally, the motion equations of vehicle with 23 DOFs are derived using the D'Alembert principle.

建立了較完善的機(jī)車車輛分析模型和較精確的輪對(duì)運(yùn)動(dòng)方程：考慮三維非線性輪軌接觸幾何關(guān)系网站视频你懂的，用Kalker蠕滑理論研究了輪軌接觸區(qū)的蠕滑效應(yīng)，建立了較為詳細(xì)的輪對(duì)運(yùn)動(dòng)方程欧美性爱1区，提出用迭代法來(lái)求解輪軌蠕滑力從而對(duì)現(xiàn)有蠕滑力求解方法進(jìn)行了改進(jìn)人人色人人橾人人色人人橾，并采用D′Alembert原理推導(dǎo)了23個(gè)自由度車輛的運(yùn)動(dòng)方程。

From the mechanics analysis, the relationships between the configure parameters (such as the wheel parameters and the position of mass center) and the mobility performane indexes (such as the wheel sinkage, motion resistance and drawbar pull) are obtained. The design principles of the wheel parameters, position of mass center and the wheel space are given. It is demonstrated that the mass center is crucial to the mobility performance of the lunar rover.

通過(guò)對(duì)移動(dòng)性能的分析黄色三级网，得到了構(gòu)型參數(shù)和地形參數(shù)與下陷量黄色视频免费区、運(yùn)動(dòng)阻力、牽引力等性能參數(shù)間的關(guān)系曲線欲香欲色综合网天天涩综合，給出了月球車車輪九九精品热全在这、質(zhì)心位置和輪距等構(gòu)型參數(shù)的設(shè)計(jì)原則，論證了質(zhì)心對(duì)于月球車移動(dòng)性能的重要性在线A片中文亚洲。

Motorcycle to have a good and smooth movement of traffic through, it is necessary to do a good job in a motorcycle parts and front-wheel rear-wheel drive in the wheel rim, wheel and tire design.

要使摩托車有良好的運(yùn)動(dòng)平穩(wěn)性和行駛通過(guò)性国内免费自拍1视频在线观看网址，就要做好摩托車傳動(dòng)部分和前后輪中輪輞、輪轂和輪胎的設(shè)計(jì)亚洲区国产日韩区在线观看。

The inventive idler wheel comprises: a lower part to generate suction force; an outer wheel contacting the ground when moving machine body; an inner wheel embedded into the inner side of outer wheel to support the weight of machine body; and a rotational shaft inserted and mounted at the centers of inner and outer wheels with the rotation function.

本發(fā)明的吸塵器滾輪包含：形成吸力的機(jī)體下部东北女人叫床大片毛片AA；機(jī)體移動(dòng)時(shí)與地面接觸的外輪；嵌入到外輪的內(nèi)側(cè)国产城中村嫖妓播放观看，支撐機(jī)體重量的內(nèi)輪性交网址在线观看；插入并固定在內(nèi)輪及外輪的中心，起到轉(zhuǎn)動(dòng)作用的旋轉(zhuǎn)軸色视色视影院。

The fibre reinforced resin bond grinding wheel for cutting off is widely used. The traditional presses used for manufacture this type of grinding wheel in most factories at present have problems, such as laboriousness for workers, low efficiency of production, and dependance of products quality on operators' skillnes. This paper introduced a new type of press for shaping grinding wheel with six stations designed by the authors, considering the shortcoming of presses in use and the operating characteristics in manufacture of this type of grinding wheel.

概述纖維增強(qiáng)樹脂薄片砂輪是一種低值易耗產(chǎn)品一级a片XX，在樹脂砂輪中占有很大的比重，主要用于切割各種規(guī)格的型鋼911影院在线播放，在國(guó)內(nèi)外都有較大的市場(chǎng)丝袜美腿足交，隨著市場(chǎng)競(jìng)爭(zhēng)的加劇，對(duì)產(chǎn)品質(zhì)量和生產(chǎn)效率提出了更高的要求哪里有毛片网址，各生產(chǎn)廠家只有通過(guò)降低生產(chǎn)成本提高產(chǎn)量來(lái)擠占市場(chǎng)日韩视频免费福利片在线。

A typical wheel optimization design was exploringly studied, and the results show that through the wheel structural optimization design, the weight of the wheel may be reduced further. The benefits are material saving and improving of the vehicles'driving quality. It has vital significance to reduce the cost of the wheel.

對(duì)某一類型車輪的優(yōu)化設(shè)計(jì)進(jìn)行了探索性的研究，研究結(jié)果表明18岁以下禁止访问的网站，通過(guò)對(duì)車輪結(jié)構(gòu)的優(yōu)化設(shè)計(jì)美国一极黄片，可以進(jìn)一步降低車輪的重量，在保證車輪性能的前提下充分地節(jié)省材料并改善車輛行駛性能美女白丝黄视频在线免费观看a，對(duì)降低車輪制造的成本具有重要的意義国产欧美AAA√。

Packet out of the 1st wheel are tranferred to yhe 4th wheel in the horizontal direction, while packet out of the 4th wheel in the vertical direction. Label-wrapped packet is lifted to a certain height on which stamp gluing is accomplished. After that, the packet is transmitted out of exit passage 8 and exit wheel 9. The whole process of soft packet packing is completely finished.

一號(hào)輪至四號(hào)輪之間的煙包交接都在水平方向進(jìn)行国产v日韩免费在线观看，但四號(hào)輪是垂直方向輸出煙包，把完成商標(biāo)紙包裝的煙包提升一個(gè)高度進(jìn)行粘貼封簽…性欧美视频A片AA片…，并由輸出通道8和煙包輸出輪9輸出欧美另类激情A片，從而完成整個(gè)煙包的包裝過(guò)程。

This article analyzes the working theory and the working forces of the drive wheel, pyramid wheel and outer ring during the transmission process. It also deduces the practical calculation formula of the pyramid wheel type variable speed drives, it also goes on the material calculation aim at the selection parameter. It protracts the assemble-drawing of the pyramid wheel type variable speed drives and the accessory-drawing of the mostly drive component. So it can express more clearly of the structure and process planning of the variable speed drives.

本文分析了在傳動(dòng)過(guò)程中變速器的主動(dòng)輪国产h视频网站在线观看、菱錐久久综合毛片、和外環(huán)的工作原理和受力關(guān)系；詳細(xì)推導(dǎo)了實(shí)用的菱錐錐輪式無(wú)級(jí)變速器設(shè)計(jì)的計(jì)算公式国产日韩亚洲欧美激情戏；并針對(duì)設(shè)計(jì)所選擇的參數(shù)進(jìn)行了具體的設(shè)計(jì)計(jì)算欧美色吊；繪制了所計(jì)算的菱錐錐輪式無(wú)級(jí)變速器的裝配圖和主要傳動(dòng)元件的零件圖，將此變速器的結(jié)構(gòu)和工藝等方面的要求表達(dá)得更為清楚黄色a片视频网导航。

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