【正文】 ck the performance and parameters of the main browser Different uses need to configure the different vehicles used exclusively on the performance parameters Check power devices. Check our performance and parameters are based mainly on the use of vehicles May be, and must be connected with the transmission, engine, gear pump Or air pressor to match the performance Process is in strict accordance with industry standards, and has been largely determine its The scope of use conditions. Such as dump truck, due to restrictions on its use, onetime Consecutive working hours is not very long, so do not have too much power to choose, it is necessary to Order to check for the work force, and in order to avoid unnecessary waste of resources. And fire trucks, bulk cement truck, cement mixer truck, truck and Special Purpose Vehicle, such as oil, due to the need for a longer period of time of continuous work, it is necessary to choose Greater power to force continuous operation of the access device. At present, have been successfully Check engine development and maintenance of power use and low cost, reliability and Better access to power gradually to replace the clutch, and transmission of Power from a shaft And so on, and bee the first choice for these vehicles. Check our performance parameters include Check power transmission device to match the maximum output torque, speed ratio from edge devices, gymnastics Longitudinal approach, sustainable working hours, working temperature and so on. The performance The choice of parameters the user needs vary according to the requirements of Determined not elaborate. 2 to determine the way from edge Power take off mode devices need to take power in favor of vehicle layout. Take power from the device The car the way from the main power from the flywheel power (that is, directly from the launch Power machine check), check the clutch, and a checkaxis force and power transmission check. Its In transmission, including transmission access and power precheck, and check the rear edge, top Check, and check our side and so on. Power output from a variety of ways, there are Singleoutput, dual output, with output flange, internal and external spline output, a direct link Pump and so on. Manufacturers and users to be modified according to their different needs Choose a different way of taking power from the power device. 3 to determine the size check our interface Power take off installed in different ways, interfaces are not the same size. Check our interface model and engine size and transmission type directly Clearance. Engine and transmission manufacturers of different size and connectivity Check the power open window is not the same, the user must know the selected chassis Engine model, transmission model, condition and match the use of the access edge Parameters, power device manufacturers access to information based on user and Check the matching of Power. As a result of China39。s current power production device manufacturers get more access Development of basic device is the ability to imitate, absorb, assimilatethe structure of similar products abroad And technology, so check the quality of our products depends primarily on manufacturing technology And testing whether the means of advanced and reasonable. Converted the majority of manufacturers and users Take power in the choice of when those who only look for the strong force from Production Manufacturers to obtain the relevant technical support in order to avoid unnecessary Economic losses.取力器使用壽命的影響分析　　灑水車水泵、取力器和汽車發(fā)動機的正確匹配是保證其正常運行的設(shè)計因素，這些只是灑水車使用可靠性的前提條件。日常正確的操作使用狀態(tài)是確保取力器使用壽命的關(guān)鍵條件，當(dāng)取力器的速比一定時，司機控制發(fā)動機油門的大小是水泵運轉(zhuǎn)快慢的關(guān)鍵。水泵運轉(zhuǎn)的快慢直接影響了取力器的壽命。軸功率的變化，對設(shè)計保險系數(shù)較大的水泵而言其影響較小，而對于取力器的影響則是致命的。汽車取力器一般設(shè)計最大輸出功率為30 kW，正常情況下足以滿足傳動與功率的需求，但對于驅(qū)動水泵類產(chǎn)品時應(yīng)考慮其功率與轉(zhuǎn)速的立方成正比關(guān)系，由于取力器要傳輸41．47 kW遠遠大于設(shè)計功率30 kW，所以此時取力器的損傷是必然的，這一點應(yīng)該引起取力器生產(chǎn)廠家和用戶的高度重視。灑水車底盤一定時，水泵和取力器的匹配選型是保證其可靠和經(jīng)濟運行的關(guān)鍵因素。取力器設(shè)計最大輸出功率的提高和用戶正確的使用狀態(tài)是減少取力器故障的決定因素。只有取力器生產(chǎn)廠、灑水車改裝廠和用戶共同努力，才能確保灑水車在連續(xù)工作狀態(tài)下故障率減少到最小，以提高取力器生產(chǎn)廠、灑水車改裝廠的信譽和用戶的工作效率。關(guān)于汽車取力器選型我國專用車迅猛發(fā)展,對汽車取力器的需求日益增大。但是,由于很多改裝廠家和用戶對取力器的性能不是很了解,因取力器選型與汽車使用工況不匹配而致使取力器使用壽命縮短,甚至造成質(zhì)量事故的情況時有發(fā)生,給改裝廠家及用戶帶來了諸多不便并造成經(jīng)濟上的損失。針對這些情況,現(xiàn)對汽車取力器的選型做一簡單介紹,供改裝廠家及用戶參考。1 　確定所需取力器主要性能和參數(shù)不同用途的專用車輛需配置不同性能、參數(shù)的取力器。取力器的性能和參數(shù)主要根據(jù)車輛的用途而定,并且必須與所連接的變速器、發(fā)動機、齒輪泵或空壓機的性能參數(shù)匹配。取力器在設(shè)計和制造過程中是嚴(yán)格按照行業(yè)標(biāo)準(zhǔn)制造,并已大致確定了其使用工況范圍。如自卸車,由于受其用途限制,單次連續(xù)工作時間不是很長,因而不必選擇功率太大,要求連續(xù)工作的取力器,以免造成不必要的資源浪費。而消防車、散裝水泥車、水泥攪拌運輸車、起重車及油田專用車等,因需要連續(xù)工作較長時間,就要選擇功率較大、能連續(xù)運轉(zhuǎn)的取力器。目前國內(nèi)已成功開發(fā)的發(fā)動機取力器使用及維護成本低,可靠性又較好,將逐步替代離合器取力器、變速器一軸取力器等,而成為這些車輛的首選。取力器性能參數(shù)包括取力器相匹配變速器最大輸出扭矩、取力器速比、操縱方式可持續(xù)工作時間、工作溫度等等。各項性能參數(shù)的選擇因用戶需求不同而不同,需根據(jù)要求而定,在此不詳述。2 　確定取力方式取力器取力方式需有利于整車布置。取力器從汽車上取力的方式主要有飛輪取力(即直接從發(fā)動機取力) 、離合器取力、一軸取力及變速器取力。其中變速器取力又包括變速器前置取力、后置取力、頂取力、側(cè)置取力等。取力器輸出方式也多種多樣,有單輸出、雙輸出、帶法蘭輸出、內(nèi)外花鍵輸出、直接連泵等等。改裝廠家及用戶需根據(jù)自己不同的需求來選擇不同取力方式的取力器。3 　確定取力器接口尺寸取力器安裝方式不同,接口尺寸也不盡相同。取力器接口尺寸與發(fā)動機型號和變速器型號直接相關(guān)。發(fā)動機和變速器的生產(chǎn)廠家不同,連接尺寸和所開的取力窗口也不相同,用戶必須確知所選底盤的發(fā)動機型號、變速器型號、使用工況和匹配的取力器參數(shù),取力器生產(chǎn)廠家才能根據(jù)用戶資料提供與之匹配的取力器。由于我國目前生產(chǎn)汽車取力器的廠家較多,取力器開發(fā)基本是模仿、吸收、消化國外同類產(chǎn)品結(jié)構(gòu)和技術(shù),因此取力器產(chǎn)品質(zhì)量主要取決于制造技術(shù)和試驗手段是否先進、合理。改裝廠家及廣大用戶在選擇取力器時只有認準(zhǔn)那些有實力的取力器生產(chǎn)廠家以獲取相關(guān)技術(shù)支持,才能避免造成不必要的經(jīng)濟損失。附件2 程序1齒輪校核程序Temax=450*10^3z1=23。z2=29。z3=20。y1=。 y2=。 y3=。 m1=。z=[z2]。zw=[z1]zzw=[z3]。kc=[7]。kcw=[7]kczw=[7] 。y=[y2]。yw=[y1]yzw=[ y3]。mn=[m1]。tg1=temax。tg2=temax*z2/z3。k1=1. 5。%斜齒輪kf1=。%主動齒輪kf2=。%從動齒輪kt=。%重合度系數(shù)aaaa=[]。%螺旋角。bb=aaaa*pi/180。w=2.*Tg1.*cos(bb)*k1*kf2./(pi.*mn.^3.*zw.*kcw*km.*y1)%δw(1)ww=2.*Tg2.*kf1*k1./(pi.*m.^3.*z.*kw*km.*y2)%δw(2)wzw=2.*Tg2.*kf2*k1./(pi.*m.^3.*zzw.*kzw*km.*y3)%δw(3)E=*10^5。a=*pi/180。%αaw=*pi/180。dz=m.*z。dzw=mn.*zw。dzzw=m*zzw。db=m.*z。dbw=mn.*zw。dbzw=m*zzw。rz=.*dz。rzw=.*dzw。rzzw=*dzzw。rb=.*db。rbw=.*dbw。rbzw=*dbzzw。b=m.*kc。bw=mn.*kcw。bzw=m*kczw。wj=.*sqrt(2.*Tg1*E./(rz*sin(a))/cos(bb).^2.+(rb*sin(a)))./cos(bb).^2.*dz.*b)) %δj(2)wjzw=.*sqrt(2.*Tg2*E./(rzzw*sin(a))/cos(bb).^2.+(rbzw*sin(a)))./cos(bb).^2.*dzzw.*bzw)) %δj(3)wjw=.*sqrt(2.*Tg2*E./(cosa*cosaw*(rzw*sin(a))/cos(bb).^2.+(rbw*sin(