挖掘机

Therefore, the analysis of excavator hydraulic system design in promoting the development of China's excavator of great significance.

因此，对挖掘机液压系统的分析设计对推动我国挖掘机发展具有十分重要的意义。

The carriage positioning was finished, the coordinate transformation matrix of the bucket relative to the ground and the digging depth were obtained and it is easy to make the three-dimensional trace control of the hydraulic excavator bucket easy.

然后，推导该定位车体位姿下铲斗坐标系相对于大地的坐标变换矩阵，导出挖掘深度定位公式，实现了挖掘机挖掘轨迹的三维空间定位，为实现挖掘机的三维空间轨迹精确控制与挖掘深度控制打下了基础。

While this company offers matching products for more than 20 bulldozers and excavators, this company also supply parts for all the bulldozers, excavators and other pedrail type machinery (including exported pedrail type engineering machine).

产品简介公司在为国内二十多个推土机、挖掘机等主机生产厂提供配套产品同时，还通过全国性的营销网络，迅速及时地为推土机、挖掘机及其它履带式机械用户提供维修用配件服务。

In order to design lighter and faster hydraulic excavator, a rigid-flexible hybrid modeling method based on rigid multi-body dynamics and finite element method was put forward to study the dynamic characteristic of hydraulic excavator in its whole working cycle. The working equipment with characteristic of time-varying structure was taken as research object, and radial acceleration was computed as tags of key load.

为适应液压挖掘机高速、轻量化的要求，以具有时变固频特性的液压挖掘机工作装置为研究对象，提出了以角加速度判断时变结构的关键工况，利用刚性多体动力学和有限元方法对液压挖掘机在整个作业循环中的动力学特性进行建模和分析。

At the same time, a mass of data during the traditional process of excavator design is stored dividually in different data base, which directly affects the efficiency of excavator design and the implementation of subsequent excavator CAE system.

另一方面，由于挖掘机CAD系统中的大量数据和信息都分散存储在不同系统数据库中，大大影响了设计进程和后续的挖掘机CAE系统的进行。

According to not completely statistics, China's engineering's machine's market's proceedses be possible to break through 100,000,000,000 yuan Renminbi in 2003, withs proceeds' 77,600,000,000 yuan Renminbis compare with in 2002, amplitude above at 25%, market reappear "blowout "state. Excavator's sale volumes reach 33000 in 2003, add import de excavator, excavator's market's volume at 60000 above in 2003 the whole year; mechanical loader's market's sale volume at 80000 about, thereinto's mansion work, willow work's a year mechanical loader produces the sales volume average double exceed 10000; forklift's market's sale volume at 40000 about, thereinto equal to fork and Hangzhou fork's production and marketing average double exceed 10000; press real machine's market's sale volume at 10000 above; crane's market's sale volume too at 10000 above.

据不完全统计，2003年中国工程机械市场销售额有望突破1000亿元人民币，与2002年销售额776亿元人民币相比，增幅在25%以上，市场再现&井喷&态势。2003年挖掘机销量达33000台，加上进口的挖掘机，2003年全年的挖掘机市场容量在60000台以上；装载机市场销量在80000台左右，其中厦工、柳工年装载机产销量均双超10000台；叉车市场销量在40000台左右，其中合叉和杭叉产销均双超10000台；压实机械市场销量在10000台以上；起重机市场销量也在10000台以上。

This time topic which graduates a design is tire type the liquid press to scoop out machine and other types of the excavation machine compare, the excavation machine of this kind of type contain a lot of advantages, it uses car bedrock.

本次结业设计的题目是轮胎式液压挖掘机与其它类型的挖掘机相比，这种类型的挖掘机有很多优点，它使用汽车底盘。

ABSTRACT :This time topic which graduates a design is tire type the liquid press to scoop out machine and other types of the excavation machine compare, the excavation machine of this kind of type contain a lot of advantages, it uses car bedrock.

资料包括论文，图纸，任务书 [ 58页，14572字 ]摘要摘要：本次结业设计的题目是轮胎式液压挖掘机与其它类型的挖掘机相比，这种类型的挖掘机有很多优点，它使用汽车底盘。

ABSTRACT :This time topic which graduates a design is tire type the liquid press to scoop out machine and other types of the excavation machine compare, the excavation machine of this kind of type contain a lot of advantages, it uses car bedrock.

摘 要：本次结业设计的题目是轮胎式液压挖掘机与其它类型的挖掘机相比，这种类型的挖掘机有很多优点，它使用汽车底盘。

The first excavator manual has been available 130 years of history has gone through during the fight by the steam-driven rotary excavator to the internal combustion engine and electric drive rotary excavator hydraulic application integration technology of the automatic hydraulic excavator Step by step in the development process.

第一台手动挖掘机问世至今已有130多年的历史，期间经历了由蒸汽驱动斗回转挖掘机到电力驱动和内燃机驱动回转挖掘机、应用机电液一体化技术的全自动液压挖掘机的逐步发展过程。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。