机械工程

This text is introducing the most popular product in engeneering machine ZL30 forklift 'transmission case in the function as well we introduce the principle of the design of transmission case .together with the main parts in transmission ,such as the fluid strength ,the overdrive clutch,the structure of planet rowand so on. and in the detailed introduction ZL30 forklift the overdrive clutch and the output shaft design process, and proposed in four axes design's improvement measure.

本文主要介绍了工程机械中应用最广泛的ZL30轮式装载机的行星式变速箱的功能和总体设计思想，并介绍了其中主要零件如：液力变矩器、超越离合器、行星排结构的用途和功能，并详细的介绍了ZL30装载机中超越离合器和输出轴的设计过程，并提出了四轴设计中的改进措施。

Hereinafter referred to as Powerful Heavy Industry is a large private-owned enterprise specializing in producing bulldozer, loader, tractor hoist, boring machine, coal cutter, vibrating screen and other engineering machinery and heavy mining complete equipment.

鞍山强力重工有限公司是上海中油天宝集团与鞍山第一工程机械股份有限公司实施战略重组后，形成的专业生产推土机、通井机、掘进机、装煤岩机的大型企业。

Machine piling works. Coal mine machinery.

机桩工程。煤矿机械。

According to this theory ,the company is using〝NIKRO〞to produt the most advanced air condition cleaning system——VIPER CLEAN SWEEP——〝cobra〞vibrating tail cleaning system,by the air compressor and mechanical seismomagnetic equipment, to clean the dust and stain that is adsorbed on the HVAC conduit system and other devices.

根据该原理，上海泰如一环境科技工程有限公司采用NIKRO生产的目前世界上最先进的空调清洁系统——VIPER CLEAN SWEEP——'眼镜蛇'震动鞭清扫系统旋转刷系统，通过空气压缩机和机械振磁装置，对附在HVAC系统的管道系统和其他零部件上的灰尘和污染物进行清除。

Yongda Wafangdian Bearing Manufacturing Co., Ltd. is the advanced level in the 1990s bearing processing equipment, strong technical force, sophisticated production equipment, advanced technology level, the detection means complete, the implementation of computer management quality standard bearings and non-standard bearings Specialized production and focus on new products and multi-function products, all kinds of special structure of the non-standard bearings, to maintain for processing, but also for user design and manufacture of deep groove ball bearings and cylindrical roller bearings, spherical roller bearings, Cone Roller bearing, thrust ball bearings, thrust-aligning roller bearings, subdivision-bearing, self-lubricating bearing joints, processing diameter of 200 mm to 1000 mm of non-standard bearings, bearing the standard, widely used in mining, metallurgy, steel rolling, water conservancy , Textiles, ceramics, oil, electrical, engineering machinery, and so on.

瓦房店永达轴承制造有限公司具有90年代先进水平的轴承加工设备，技术力量雄厚，生产设备精良，工艺水平先进，检测手段齐全，实行微机管理质量的标准轴承和非标准轴承专业化生产，并侧重于新产品及多功能产品、各种特殊结构的非标准轴承、保持器加工制造，还可为用户设计制造深沟球轴承、圆柱滚子轴承、球面滚子轴承、圆锥滚子轴承、推力球轴承、推力调心滚子轴承、剖分式轴承、自润滑关节轴承、加工制造内径200mm至1000mm的非标准轴承、标准轴承、可广泛用于矿山、冶金、轧钢、水利、纺织、陶瓷、石油、电机、工程机械等。

Steel bar ; mechanical connection ; cold extruding ; heading straight thread ; technology ; Three Gorges project

钢筋；机械连接；冷挤压；镦粗直螺纹；技术；三峡工程

The factory is located in the East China Sea coast village of machinery auto parts Yuhuan County Farm liberation Tong industrial area, the area of 2050 m2, building area of 1230 m2, the number of employees 128 people, 10 were in engineering and technical personnel, engineers three people.

本厂座落在东海之滨的机械汽配之乡玉环县解放塘农场工业区，地面积占2050m2，建筑面积1230 m2，职工人数128人，工程技术人员10人，工程师3人。

Ningbouniversal joints are universal joints specializing in the production of automobiles, engineering machinery universal joint, cross axle differential enterprises, located in Yuyao City, Zhejiang Province Economic Development Zone, adjacent to Hangzhou-Ningbo Expressway and strategic location, the transportation is convenient.

宁波正虹万向节有限公司是专业生产汽车万向节、工程机械万向节、差速器十字轴的企业，坐落于浙江省余姚市经济开发区，毗邻杭甬高速公路，地理位置优越，交通便捷。

At present, the company total assets stood at 560 million yuan, net asset value of 340 million yuan, the existing 25 cylinder liner, piston production lines, with an annual output of 2.5 million cylinder liner, piston 3500000 scale production capacity, more than 800 Products kinds of products covering the whole country 29 provinces, municipalities and autonomous regions, involving automobiles, tractors, motorcycles, ships, engineering machinery and general-purpose engines, domestic supporting more than 50 OEMs and more than 1,000 repair workshop, to provide parts , and some exports of the United States, Japan, Southeast Asia, Central Europe and other countries and regions with the Import and Export Products autonomy.

目前，公司资产总值已达5.6亿元，资产净值3.4亿元，现有25条缸套、活塞生产线，具有年产气缸套250万只，活塞 350万只的规模生产能力，产品800余种，公司产品覆盖全国29个省、市、自治区，涉及汽车、拖拉机、摩托车、船舶、工程机械和通用发动机，国内配套主机厂50余家，并为全国1000余家维修厂、商提供配件，部分产品出口美国、日本、东南亚、中欧等国家和地区，具有产品进出口自主权。

Bachelor degree or above, a n d major in mechanical engineering or related.

本科及以上学历、机械或相关工程专业。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。