WZ45-40輪式挖掘裝載機工作裝置設計含8張CAD圖

WZ45-40輪式挖掘裝載機工作裝置設計含8張CAD圖,wz45,40,輪式,挖掘,發(fā)掘,裝載,機工,裝置,設計,cad Loading Machine System Reliability AnalysisThe loading machine system reliability analysis and optimization is for our country 15 builds one kind of great technical equipment served with basic industry in the 2015 older in age phases planning and infrastructure , and its extensive use is in multitudinous domains of national economy , and pushes forward the development that the nation built the cause . As a result of near 40 years the effort , our country loading machine trade has had than the development greatly , but product standard , scope and enterprise character are compared with the advanced country , and following that upward the analysis will be less than about 15 years entire , especially large-scale loading machine gap is speedily developed and is compared with national economy development strategy objective and world science and technology more greatly , far away not changes the passive backward aspect , contrary there being trend bringing up further in the technology . The made in our country loading machine with price hangs down , the characteristic of satisfied general cubic meter of engineering shovel fortune school assignment requirement of ability , hence at home the owning rate of the market only 1/3, for Ka Tebis lux and small loose sames type about for the price of made in our country loading machine of 90%1,1. has in the ordinary engineering the stronger competition power , but at home focal point cubic metre of earth and stone 1 Cheng Zhongyins reliability is wrong and life span is short , JL does not have a location , all by abroad the product is monopolized . The near price superiority owing to the made in our country loading machine of several years have about closely adding 0 export every year , and occupy 1.5% of the gross output about . Therefore can speak , the characteristic of internal market is Xiamen . engineering China produces the machine can not to advance , and moves that in the engineering to enter port the machine not sell well . The made in our country loading machine trade advance is than fast at the aspect of structure capability and structure spare process ability to the mentioned above explanation , and has been close to the advanced standard of abroad , but at the aspect of engine and major transmission part , the barrier rate height has restricted product overall quality and technology raising of standard because of affairs . In spite of there being many new products to be published in every year , their transmission part is almost alike , thus the quality standard is also almost alike . Therefore chooses the transmission system of technical performance first-in , and wasing out not to agree with that to close the nation will be the key that raises the loading machine product quality about standard and backward transmission part . the blurred reliability analysis loaded the machine system being load the machine studying as a system , viewpoint and method with the system are analysed to the reliability of each sub system , and reasonably distribute reliablely spending , and makes system the reliable degree can optimize the disposition , thus raise the reliability of whole set . the reliability while the deceleration parachute of wheel optimizes the design is using the reliability to optimize this modern times design method of design , and makes the machine wheel loading can pledge while the reliability of these key parts of deceleration parachute , and makes the intrinsic defect of traditional design method can surmount . Owing to the fact that the reliability is to loading the machine market competition importance energetically , the research of this aspect are all attached importance to in home and abroad academic circles and industry circle verymuch . The advanced country is resonablely discussed to go up constantly to weed through the old to bring forth the new , and accumulated rich experience in practice , and has conquered the solid foundation , and makes his product reliability be in the lead colleagues of other abroads greatly . At the same time , our country is in this domain , and still imperfect in theory , being short of the support of a large number of foundation work in the practice , the product reliability is behind . Development and the research content of 1-2s reliability research and reliability branch of learning gives rise to and develops the general situation and breathes out World War II phase , and Germany has put forward the generally thought of reliability when improving his V- I and V-Is Ts rocket capability . The department such as sea and Lu air force etc of the United States owing to his technical equipment frequently breaks down and can not effectively use , research aspect in 1945 Nian Zhi being in progress a large number ofly in 1950 about the reliability . Then , the plane of United States group thread operation had B0% can not take off before , and 50% breaks down during electronics apparatus Guangxi university Master academic degree thesis ware use , and the normal work time average of electronics device has only 20 hours on the bomber , and the electronics device on the navy naval ships and boats has 70% to break down at the initial stage of the use . The Gao Guzhang rate of electronics device has caused highly attaching importance to of people , thus has promoted reliability research firstly to get the quick development in the electronics domain . Founding first American nation reliability committee in New York 195 4 years , nations such as the Britain , former Soviet Union and Japan etc have begun reliability research work from in 20 centuries the 50s ends in succession . The stage 1 ( in 1943 to 1958 ) has chiefly been described the generally rate statistics property of the average life on the exponential distribution law foundation of establishment . The research is thought , and possesses unavoidable nature hence what hinders occur the product and his cause is the random event . The characteristic of reliability research is the stage ( in 1958 to 1968 ) , and the trial to have developed the real reliability is energetically assessed , as well as the collection of reliability information is worked with dealing with . As a result of the research of this stage , making reliability research work expand the mechanical domain from the electronics domain , enlisting , the matter department has expanded the for civil use department . Is later on the third stage of reliability development in 196 8 years . In this stage , the reliability mathematics theory has got the development further , and makes his closely combine with the technology branch of learning , and has formed reliability trial method and data handling method ; Issue the concerned reliability standard . Has built preventive maintenance system and reliability management organization , and make the education of reliability be universalized in more further . Our country is from 1950 , and primary machine building ministry has been in progress research about the unit to the reliability , and has published two kinds of publications and . Establish the environmental test research institute in Guangzhou again later on . The reliability research of our country has got energetically and has developed from reform and open in 1978 , and many trades have been establish reliability special interest group and are weaved in succession , and has laid down the corresponding reliability standard , and have strengthened the product reliability examining and manage work . As a result of the effort of 20 many yearss , the bigger result has been gained in the mechanical domain of our country engineering at the aspect of product reliability research . To the corresponding reliability quota of mechanical product formulation of engineering and the reliability trial standard of batch process , reliability course advance side by side line special subjects research has been opened to the correlation specialty of colleges and universities , thus has promoted constantly raising of mechanical product quality of engineering . Namely it is very vast that the content reliability branch of learning of two , reliability research is studied the domain , is divided into three basic aspects Reliability basic theory , reliability engineering and reliability management . The reliability basic theory includes reliability mathematics and inefficacy two domains . The probability theory is theory foundation of reliability research with the mathematical statistics . Reliability engineering and reliability management include : 1. the reliability quota is fixed with distributing surely ; 2. the reliability forecasting : 3. the reliability design ; 4 manufacturing reliability ; 5. the reliability trial : 6. the appraisal reliability ; 7. the use reliability ; 8. the reliability management . Along with the development of science and technology , the technology standard of mechanical product of engineering is constantly raised , and user asks also more and more highlyer to the reliability of product , and the reliability standard of product is directly influencing the economic performance of user , and becomes the key factor that the product was competed power . Therefore the mechanical reliability theory research of engineering will suffer attaching importance to of more and more higher , and reliability research also will be gone deep into more further . the design method is compared the mechanical system reliability design of 1-3 with the tradition , and the reliability design has his self the characteristic . Thinks that stress , intensity and fail-safe system etc are the singulary variables of certainty in the tradition design : And the variable that generals and ministers of state answers is dealt with the random variable into the multivalue in the reliability design , and obeys _ 50% during Guangxi university Master academic degree thesis ware use is broken down , and the normal work time average of electronics device has only 20 hours on the bomber , and the electronics device on the navy naval ships and boats has 70% to break down at the initial stage of the use . The Gao Guzhang rate of electronics device has caused highly attaching importance to of people , thus having promoted the most before all others quick the develops Z getting in the electronics domain of reliability research to found first American nation reliability committee in New York 195 4 years , and nations such as the Britain , former Soviet Union and Japan etc have begun reliability research work from in 20 centuries the 50s ends in succession . The stage 1 ( in 1943 to 1958 ) has chiefly been described the generally rate statistics property of the average life on the exponential distribution law foundation of establishment . The research is thought , and possesses unavoidable nature hence what hinders occur the product and his cause is the random event . The characteristic of reliability research is the stage ( in 1958 to 1968 ) , and the trial to have developed the real reliability is energetically assessed , as well as the collection of reliability information is worked with dealing with . As a result of the research of this stage , making reliability research work expand the mechanical domain from the electronics domain , enlisting , the matter department has expanded the for civil use department . Is later on the third stage of reliability development in 196 8 years . In this stage , the reliability mathematics theory has got the development further , and makes his closely combine with the technology branch of learning , and has formed reliability trial method and data handling method ; Issue the concerned reliability standard . Has built preventive maintenance system and reliability management organization , and make the education of reliability be universalized in more further . Our country is from 1950 , and primary machine building ministry has been in progress research about the unit to the reliability , and has published two kinds of publications and . Establish the environmental test research institute in Guangzhou again later on . The reliability research of our country has got energetically and has developed from reform and open in 1978 , and many trades have been establish reliability special interest group and are weaved in succession , and has laid down the corresponding reliability standard , and have strengthened the product reliability examining and manage work . As a result of the effort of 20 many yearss , the bigger result has been gained in the mechanical domain of our country engineering at the aspect of product reliability research . To the corresponding reliability quota of mechanical product formulation of engineering and the reliability trial standard of batch process , reliability course advance side by side line special subjects research has been opened to the correlation specialty of colleges and universities , thus has promoted constantly raising of mechanical product quality of engineering . Namely it is very vast that the content reliability branch of learning of two , reliability research is studied the domain , is divided into three basic aspects Reliability basic theory , reliability engineering and reliability management . The reliability basic theory includes reliability mathematics and inefficacy two domains . The probability theory is theory foundation of reliability research with the mathematical statistics . Reliability engineering and reliability management include : 1. the reliability quota is fixed with distributing surely ; 2. the reliability forecasting : 3. the reliability design ; 4 manufacturing reliability ; 5. the reliability trial : 6. the appraisal reliability ; 7. the use reliability ; 8. the reliability management . Along with the development of science and technology , the technology standard of mechanical product of engineering is constantly raised , and user asks also more and more highlyer to the reliability of product , and the reliability standard of product is directly influencing the economic performance of user , and becomes the key factor that the product was competed power . Therefore the mechanical reliability theory research of engineering will suffer attaching importance to of more and more higher , and reliability research also will be gone deep into more further . the design method is compared the mechanical system reliability design of 1-3 with the tradition , and the reliability design has his self the characteristic . Thinks that stress , intensity and fail-safe system etc are the singulary variables of certainty in the tradition design : And the variable that generals and ministers of state answers is dealt with the random variable into the multivalue in the reliability design , and obeys the Guangxi university fixed generally rate statistical distribution of Masters academic degree thesis . In the computational method , the calculation formula of certainty is used in tradition design , and the calculation formula of nondeterminacy is used in the reliability design . The tradition design takes definite allowance stress and fail-safe system as the norm at the aspect that design the norm ; And is that the generally rate that is more than stress with intensity is the norm in the reliability design . Namely , the tradition design is one kind of certainty , the experience design that takes the static state data as the foundation ; But the reliability design is one kind of nondeterminacy , and the reasonable design that the probability theory is the foundation with the statistics data . The system reliability design indicates the system design of whole set system reliability . The reliability is established in the design , explaiing the reliability design of whole set system , and is deciding the whether the most excellent life of whole set system , and the key of whether guaranty reliability standard . The reliability design of whole set system is real using the conditional sum to use and asks to the basis with the field , with the guaranty is the purpose with the ability to raise the whole set system smooth regulation accomplishing merit under the field use condition ability . But the starting point of reliability design is satisfying the reliability quota passing the demonstration from how to begin . The reliability design of whole set system is the component of whole set system overall engineering designation , and the physical design of it and whole set system closely is linked together and interlocks mutually . The reliability design quota is the requirement of independence , and is the important technology quota to pledge whole set system quality and the reliability standard . But , to the reliability design scheme of whole set system and all requirements of reliability design , again in the structure of the whole set system containeding in . Therefore will design the equipment of a first-in , and not only will have the overall scheme of the merit ability of first-in and capability , and still will have a perfect reliability design overall scheme . The fact is proved , the scheme that the whole set system has or not reliability design overall , as well as whether or not the reliability scheme is succeeded , and is the key factor to decide the whole set system success or failure , sees no matter being the manpower from economizes and the resource and reduction cost that still from quickening the trial-production rate of progress , the guaranty product quality is seen with horizontal of reliability , and all has the especially important meaning . The reliability design is blured with the reliability design with the mathematical statistics foundation of probability theory to the mechanical system of 1-4 , and generally calling it convention reliability design or ordinary reliability design , it studies random phenomena that exists in the engineering designation , deals with the design variable in the engineering designation into the multivalue random variable in the essence , thus the design in the justice is given generally as one pleases to the concerned parameter and the quota of system , a new standard is expanded in the design of handle tradition . But the reliability design exists the at the same time of random phenomena , and still exists a large number of blurring effects . Such as there are 3 kinds through abstracting the basic abutment model simplified : Holding solid deciding the end and Jian Zhiduan and free , freely holding has the clear and definite definition , easily recognition , but as far as decide the end admittedly and Jian Zhiduan does not have the clear demarcation line , to the sliding bearing , but the bearing than the width supposes for solid decide end , but the bearing narrower hypothesis for Jian Zhiduan , here comparatively wide and narrower all is the fuzzy concept . The concerned personage of home and abroad knew the limitations of convention reliability design theory in the 80s later periods . The limitations of convention reliability design theory chiefly shows at the aspect that following several : Firstly , the convention reliability design theory is built on ordinary set theory and two-valued logic foundation . Next the convention reliability design theory is faced with complicatedization of thing and the tip the is true description thing quality and the contradiction of state . Finally , the convention reliability design theory is short of the necessary data . The convention reliability design theory is protruding increasingly with the contradiction of engineering practice to the implementation of establishment