Abstract In order to improve China's railway freight capacity， and can better adapt to the existing railway line bridge， the actual state of development of load 70t， axle load 25t new GM vehicle has become an important 70t class in this new type of general goods on behalf of the C70-type models based on the general development of the gondola car design high side gondola car， named C70GB High side gondola car C70GB Department of General gondola car， the vehicle for the quasi-gauge railway in China， big shipment of goods， or the proportion of small goods in bulk， can be used for self-organization of fixed rail In a given vehicle performance and size parameters of the main conditions， the completion of the overall vehicle design and large parts， including chassis， side wall， side walls， doors and other structures， as well as the hook relief device， the selection of the Combination of design requirements on goods 70t-class key technologies and design ideas， including the lightweight body design， 25t axle load bogie Pre-design work of the main research process， analysis of issues in program selection and design， and finally through the computer graphics software to complete the overall design of vehicles and parts， in this paper based on the combination of drawing and calculation of theoretical analysis and presentation of Through the introduction of new materials， new technologies and new structural design C70GB from the high side gondola car technology to improve vehicle performance， increase rail freight capacity， China has laid a railway truck load 70t from 60t-class upgrade to the basic Keywords: gondola car; technical parameter; structure; bogie
IntroductionMachining aims to generate the shape of work-piece form a solid body，or to improve the tolerances and surface finish of a previously formed work-piece，by removing excess materials in the form of Machining is capable of creating geometric configurations，tolerances， and surface finishes often unobtainable by any other However， machining removes materials， which has already been paid for， in the form of relatively small particles that are more difficult to recycle and are in greater danger of becoming Therefore，developments often aim at reducing or-if at all possible-eliminating machining， especially in mass For these reasons， machining has lost some important markets， yet， at the same time， it has also been developing and especially having captured new markets with the application of numerical Some feel for the important of machining may be gained from the observation that in 1983 there were about 2 million metal-cutting machine tools in the unite states ( of which some 5% were numerically controlled ) and that labor and overhead costs amounted to $125 billion， or 3% of the GNP
Mechanical engineering， machinery and power generation with a relevant engineering Machinery and equipment industry is to provide the basis for the national economy， industry， the development of science and technology with a (This the most important and must be translated)Mechanical engineering is the science of natural science and technology based on the theory， combined with technical experience in the production practice， research and resolve in the development， design， manufacture， installation， use and repair of all machinery in the application of theoretical and practical issues (This is also very important)Mechanical engineering is the science of natural science and technology based on the theory， combined with technical experience in the production practice， research and resolve in the development， design， manufacture， installation， use and repair of all machinery in the application of theoretical and practical issues Machinery of modern society the five elements of production and services (people， money， energy， materials and machinery) of， and participation in energy and materials (This is more important)My father was in 1984 and graduated from Shandong University of Technology Department of Mechanical Engineering， and then assigned to the machinery factory A child I often see him inside the factory of his work for him after work， at the time of the machine had a strong By then my father for my education， I learned that engineering profession， it is a good combination of theory and practice of professional， not only have a wealth of theoretical knowledge， but also have a strong practical ability and practical ability， to the the use of learned to do a perfect My father once said to me: "School of Engineering who not only smart， but also have superior practical " From then on， I set out to study engineering， studied mechanical Now， after these days in Shandong University， studying mechanical engineering knowledge， I have a more profound Shandong University， students of mechanical engineering education in the footsteps of Shandong University of Technology， under the premise of education， combined with the 21st century facing new situations， through a series of reforms， the formation of a unique teaching Shandong University， trained to professional students can adapt to mechanical needs of the community， promote social progress and contribute to Mechanical engineering students， and all engineering majors， not only taught by professional teachers a wealth of theoretical knowledge， as well as specific practical courses， requirements to practice engineering training In addition， one year before graduation， the school will organize the students to the factory specialized training to fully understand the actual situation， to know how to properly apply the knowledge and strengthen their ability in In addition， through these years of understanding and information through Internet I understand that China's overseas engineering students engineering education and health education is still a lot of Although with these different， but this is because different countries have different national conditions of the Every seat in the midst of the University at the same time， but also according to their national conditions to determine which specific educational programs to cultivate a real talent for the At this point， Shandong University， to do very well， mechanical professional teachers teaching the basic theoretical knowledge but also teach the most advanced knowledge， and according to China's specific national conditions and arrangements for the plan most suitable for mountain college students， so that Hill College full and comprehensive development， so that after graduation they contribute to the motherland
Mechanical engineering， machinery and power generation with a relevant engineering Machinery and equipment industry is to provide the basis for the national economy， industry， the development of science and technology with a (This the most important and must be translated) Mechanical engineering is the science of natural science and technology based on the theory， combined with technical experience in the production practice， research and resolve in the development， design， manufacture， installation， use and repair of all machinery in the application of theoretical and practical issues (This is also very important) Mechanical engineering is the science of natural science and technology based on the theory， combined with technical experience in the production practice， research and resolve in the development， design， manufacture， installation， use and repair of all machinery in the application of theoretical and practical issues Machinery of modern society the five elements of production and services (people， money， energy， materials and machinery) of， and participation in energy and materials (This is more important) My father was in 1984 and graduated from Shandong University of Technology Department of Mechanical Engineering， and then assigned to the machinery factory A child I often see him inside the factory of his work for him after work， at the time of the machine had a strong By then my father for my education， I learned that engineering profession， it is a good combination of theory and practice of professional， not only have a wealth of theoretical knowledge， but also have a strong practical ability and practical ability， to the the use of learned to do a perfect My father once said to me: "School of Engineering who not only smart， but also have superior practical " From then on， I set out to study engineering， studied mechanical Now， after these days in Shandong University， studying mechanical engineering knowledge， I have a more profound Shandong University， students of mechanical engineering education in the footsteps of Shandong University of Technology， under the premise of education， combined with the 21st century， facing new situations， through a series of reforms， developed a unique teaching Shandong University， trained to professional students can adapt to mechanical needs of the community， promote social progress and contribute to Mechanical engineering students， and all engineering majors， not only taught by professional teachers a wealth of theoretical knowledge， as well as specific practical courses， requirements to practice engineering training In addition， one year before graduation， the school will organize the students to the factory specialized training to fully understand the actual situation， to know how to properly apply the knowledge and strengthen their ability in In addition， through these years of understanding and information through Internet I understand that China's overseas engineering students engineering education and health education there are still many Although with these different， but this is because different countries have different national conditions of the University of each block， while in line with international standards， but also according to their national conditions to determine which specific educational programs to cultivate a real talent for the At this point， Shandong University， to do very well， mechanical professional teachers teaching the basic theoretical knowledge but also teach the most advanced knowledge， and according to China's specific national conditions and arrangements for the plan most suitable for mountain college students， so that Hill College full and comprehensive development， so that after graduation they contribute to the
