柴油机车载式混凝土泵车标书中英文

1、S ZOOMLION中联重科Bids for the truck-mounted concreteline pump车载式混凝土泵车标书(01730)First edited in 20092009年第一次编辑I A TUVDIN EN ISO 9001: 2000Main technical data主要技术性能参数表Items项目内容Units单位Parameters参数01730series01730系列整机性能Max. theo. concrete output (L./H.) 最大理论混凝土输送量(低压/高压)m3/h82/50n m o n m o p e n.Max.concre

2、te pumping pressure (H. /L.) 最大泵送混凝土压力(高压/低压)MPa16/9Distribution valve type分配阀形式S管阀S ValveConcrete cylinder diameter X stroke 混凝土输送缸缸径X行程mm 200X1700Hopper capacity X feeding height料斗容积X上料高度LX mm800X1450WOutlet diameter出料口直径mm180m动力系统Diesel engine model柴油机型号BF6M1013CPeywPRated power额定功率kW181Rotate sp

3、eed额定转速r/min2200Circuit type液压油路形式Open circuit开式回路m e液压系统Pumping system pressure泵送系统油压MPa32y uDistribution system pressure分配系统油压MPa19-dHMixing system pressure搅拌系统油压MPa14Capacity of oil tank液压油箱容积L500ssnC底Chassis model底盘型号EQ1126KJ1盘Wheelbase 轴距mm4700s m P nOMax. aggregate diameter 允许最大骨料粒径mmSlick scr

4、ee 卵石：50、Scree 碎石：40其 它参 数Inside diameter of delivering pipe 混凝土输送管内径mm 125/0 150Dimensions: length X width X height 外形尺寸：长X宽X高mm8800X2490X3070Total weight 总质量kg11980Part names部件名称1234567891 0 1112 131jA Chassis 2一防护程 Guard rail 3. OCover 4. MMHydraulic sysfem5.箴压箱Oil tank 6一备脂 Spare tyre 7一冷却系琳Doli

5、ng system 8 动力系卿owsys 9U辂 Auxiliary frame 10 SOW Delivery unit 11 一走台 Walk platform 12 割滑系ttl_ub 13. OfiElectric cabmef 14. iJftttDistributing device 15 搅律曲 Agitator16. #4Ho pperFirst edition of 2009 （2009 年第 1 版）Main technical feature 主要技术特点Hydraulic system 液压系统Double open hydraulic loops (pumping

6、hydraulic circuit is independent of distributing hydraulic circuit) with two pumps, makes the whole hydraulic system much simpler. The reliability of thewhole system is also much higher as well as the components life is prcThisgisd greatly convenient for judgeing and removing trouble.采用双泵、双回路开式液压系统，

7、主泵送油路和S阀摆动油路相互独立，使系统简单， 元件寿命延长，可靠性更高，并便于故障判断和排除。Large valve changing direction, makes the main pumping loop quick response, small leakage, good stability,high reliability and high resist contaminative capability.主泵送油路采用大通径阀换向，响应快，内泄漏小，稳定性好，可靠性高，耐污染能力高。Hydraulic system has safe relief protection,at t

8、he same time,when the system pressure is over, the main oil pump cutting device makes itself be protected reliably.泵送液压系统具有安全溢流保护，同时，主泵还具备系统超压时，油泵压力自动切断截 流装置，使主泵获得多级可靠保护。Distributing hydraulic circuit adopts constant pressure pump, which can provide strong distributing pressure and economic energy c

9、ontrol.摆动油路采用恒压泵供油，摆动力大又具备节能功能。Cone sealing of all pipes make the pipe joints seal reliably.所有管路均采用锥面密封，管路接头密封可靠。The electrimotion high-low pressure switch adopting cartridge valve of reduces the trouble of dismantling and installing the oil pipe.采用插装阀电动高低压转换，免去拆、装油管的麻烦。Adopt emulsification technolo

10、gy of initiative and passivity recovery integration.采用了主动防御和被动防御相结合的综合防乳化技术。Electric control system 电控系统The outstanding features of the truck-mounted concrete line pump are advanced technology, simpleness and high reliability.中联车载式混凝土泵车电控系统的突出特点是技术先进、简单、可靠性高。The reliability of industry control is hi

11、gher than PLC(programmable control). It uses fewer auxiliary relays, father reducing the quantities of the electric element.该泵使用带总线的工业控制器作为控制核心，比之以前同类产品用的PLC(可编程控制器)， 其可靠性更高，功能更强大；由于其输出触点有更大的输出功率，比PLC系统可以使用更少 的中间继电器等分离元件，进一步减少了电器元件的使用数目及接线数量，提升了电控系统 可靠性。The main electric control elements from German

12、 and French ensure the elements reliability.主要电气控制元件均采用德国易福门、海拉、巴鲁夫和法国施耐德公司等原装进口件， 保证了元件的可靠性。Compared with domestic product, the electric control system is simplest, the element quantity is fewest and its reliability is highest.与国内同类产品比较，电控系统最简单，采用元器件数量最少，可靠性最高。The wire and wireless remote equipment

13、 is convenient for operation far away.配有有线或无线遥控装置，方便远距离操作。After the automatical pumping stops, the diesel engines rotate speed declines to idle speed automatically to save oil.自动泵送停止后，柴油机的转速会自动降为怠速，以节省油料。Adopting proximity switch in hydraulic cylinder can realize changing direction with non-touch, w

14、hich ensures that the direction can be changed reliably.采用油缸内接近开关非接触换向，确保换向可靠。The direction and stroke control function makes the oil quantity of the main pumping cylinder adjusted automatically, thereby the optimal control of pumping can be realized.带有换向行程优化控制功能，能根据主缸行程自动调节主缸的进油量，从而实现泵送最 优化控制。The G

15、PS function can monitor and control the equipment position and running status.带有GPS功能（选配），可以远程监控设备位置以及运行状况。The touch screen can check the equipment run status,imput and output state and alarm display.带有触摸屏，可以随时查看设备运行、输入输出状态和实时报警显示，并可方便设置系 统各项参数。The high efficiency and reliable double-signal control

16、system, which is installed main and complement signal check sensor, ensures that the truck-mounted concrete line pump has good ability of concrete suction and high efficiency.采用高效可靠的双信号控制系统，即安装有主辅两套信号检测传感器，可保证泵送油缸 满行程工作，从而确保了车载泵具有良好的吸料性，实现了泵送的高效率。Mechanical system 机械系统The design of hopper and S valv

17、e and so on adopt IDEAS software to caculate, the hopper and S valve have good rigidity to avoid the phenomenon of hopper distortion and S valve breakage.料斗、S阀等关键受力元件的设计，采用I DEAS软件对其受力状态、结构刚度、应力 集中状况进行了细分网格的有限元计算，设计出的料斗、S阀结构刚度好、工艺性佳，避免 了同类产品高层输送时料斗变形及S阀断轴现象。The agitator have unique form, which separ

18、ates the hydraulic motor from agitator bearing pedestal.At the same time, adopting large displacement motor ensures that the agitator moment is big enough.搅拌机构采用独特的结构形式，将液压马达与搅拌轴承座完全隔离，即使搅拌密封磨损 漏浆，也不至于影响液压马达。同时，采用大排量马达，确保搅拌力矩足够大，即使料况差 的情况下也能正常搅拌不被卡死。Make sure the pumping is good and decline the phen

19、omenon of pipe jam, the spectacles wear plate and cutting ring should be useed in lower abrasion. ZOOMLION s spectacles wear plate and cutting ring use high wear material, making the components5 life prolonged greatly.车载式混凝土泵车的眼睛板，切割环应该在低磨损下使用，才能够确实保证良好的泵送 状态，降低堵管现象的发生。本公司采用高耐磨硬质合金材料眼睛板、切割环。眼镜板、切 割环

20、等易损件经过不断的技术攻关，使用寿命更长，较好泵送状态时，眼镜板最高寿命最长 可达到7万方以上。The equipment of quick-replacing piston adopts hydraulic and machinery double limit, so it is safe and reliable.配备快换活塞更换装置,活塞自动退回技术，采用液压机械双重限位,安全可靠，更换活塞 在十五分钟之内。Power system 动力系统The world famous diesel engine of DEUTZ has excellent performance and high

21、 reliability.采用世界知名品牌道依茨柴油机，性能卓越，可靠性高。Lubrication system 润滑系统The lubrication system has patent technology of automatic lubrication system,which force filter and double pumps to provide oil intermittently. It makes better lubrication and lower cost.润滑系统采用拥有专利技术的集中自动润滑系统，强制过滤，预压式补油,双泵间歇供油， 整个润滑系统供油充分，

22、润滑效果好，使用成本低。Cooling system 冷却系统The radiator equipment makes the working oil temperature of hydraulic system below 70 C and makes the machine in normal status.采用强制风冷大散热器装置，确保液压系统的工作油温控制在70C以下，从而保障主机 液压系统处于正常的工作状态。Chassis 底盘The Dongfeng vehicle chassis has grand ornament, with air-condition and CUMMIN

23、S engine.采用东风汽车公司EQ1126KJ1 4X2二类底盘，平头带卧，豪华内饰，带空调，康明斯 发动机，国III排放。Main configuratio主要配置Table 4-1 Assembly configuration表4-1总成配置Name名称Items内容16Mpa diesel engine pump 16Mpa柴油机泵Diesel engine 柴油机DEUTZ BF6M1013CP （181KW） 一汽道依茨 BF6M1013CP（181KW）Circuit type 液压系统油路形式Double hydraulic open loops with two pumps

24、 开式双泵双回路Main hydraulic pump 主油泵KPM K5V200SH川崎 K5V200SHMain valve and control valve block主阀及控制阀块EATON /Rexroth 伊顿/力士乐Agitator motor 搅拌马达EATON cycloid motor 伊顿摆线马达Pumping cylinder 泵送油缸饥40X1700Concrete cylinder 混凝土缸中 200X1700Spectacles wear plate and cutting ring眼睛板、切割环Wear 耐磨Lubrication system 润滑系统Gre

25、ase feeder随动油脂泵、递进分油器Mixing auto-reverse 搅拌自动正反转Have 有Remote control 遥控器Wire and wireless romote control 有线无线兼容任选Radiato r冷却器Air-cooled 风冷Chassis style底盘型号EQ1126KJ1Electric display screen 电控显示屏Have 有High-low pressure switch 电动高低压切换Have 有Quick-release piston 快换活塞Have 有Cleaning machine 水泵清洗机Have 有Tabl

26、e 4-2 Hydraulic system configuration 表4-2液压系统配置Number 序号Name 名称Manufacturer 生产厂家1Main hydraulic pump 主油泵KPM川崎2Constant pressure pump 恒压泵REXROTH 力士乐3Gear pump齿轮泵REXROTH 力士乐4Suction filter吸油滤清器LEEMIN黎明5Return filter回油滤清器LEEMIN黎明6Return filter element 回油扩散滤芯LEEMIN黎明7Pressure relief valve 溢流阀REXROTH 力士乐

27、8Electro-hydraulic reversal valve 电液换向阀REXROTH 力士乐9Reducing valve 减压阀REXROTH 力士乐10Accumulator 蓄能器TANREN成都天人11Cut-off valve节流截止阀STAUFF西德福12Hydraulic motor 液压马达EATON伊顿13Radiato r冷却器MOONGROUP 冰轮14Check valve 单向阀LIXIN立新15Multi- reversal valve 多路换向阀ZOOMLION16Both-way hydraulic lock 双向液压锁ZOOMLION17Electro

28、magnetism reversal valve 电磁换向阀REXROTH 力士乐18Sandwich plate relief valve 叠加溢流阀REXROTH 力士乐Table 4-3 Electric system configuration 表4-3电气系统配置Number 序号Code name 代号Name 名称Manufacturer 生产厂家1QF1.3Small circuit breaker 小型断路器TE2QF2Small circuit breaker 小型断路器TE3KA1.2Relay起动互锁继电器TE4KA3.4Auxiliary relay中间继电器TE5S

29、Q3-SQ4Proximity switch 接近开关TE6SB1Flameout button 熄火按钮TE7SB2.3Pumping button 泵送按钮TE8SA1Power switch电源总开关DONGFENG 东风9Switch开关TE10Remote switch遥控开关TE11SQ1-2Proximity switch 接近开关BALLUFF巴鲁夫12YV1-4Electromagnetism iron 电磁铁13YV5Accelerograph electric machinery 油门控制电机LEADSHINE 雷赛14V1-4Diode二极管CHINA中国15PCPro

30、gramme controller 可编程序控制器IFM16XPPin插头CHINA中国17XSSocket插座CHINA中国18XTConnecting terminals 接线端子CHINA中国19GBAccumulator 蓄电池CHINA中国20B6.8Sensor传感器Engine accessory 柴油机附件21HL4-11Lamp示宽灯CHINA中国22HLLamp示廓灯CHINA中国23S3Ignition switch 点火开关Engine accessory柴油机附件24Y1Parking Electromagnetism iron 停车电磁铁Engine accesso

31、ry 柴油机附件25B7Sensor油量传感器DONGFENG 东风26F30Cooling switch冷却液面开关Engine accessory柴油机附件27S18Instrument illumination switch 仪表照明开 关TE28M1Starting motor 启动马达Engine accessory 柴油机附件29G1Electric machinery modulator 发电机调节器Engine accessory 柴油机附件30Y3Starting spurting oil increment 启动喷油增量Engine accessory柴油机附件31Lamp

32、指示灯TE公司32Resistance 电阻CHINA中国33Relay socket继电器插座TE公司34Lamp彳亍灯中国35Lamp socket行灯电源插座COBOThe list of accessory 随机附件清单序号Serial number名 称Name规格型号Model数量Quantity单位Unit备注Remarks（一）资料袋Document bag1个用于装以下资料Packaging of Following documents1机动车整车出厂合格证Certificate of the machine1张2混凝土泵送施工技术规程Working Technical Re

33、gulations for Concrete Pump1本3ZLJ5120车载式混凝土泵车使用说明书Workbook for use and servicing2本4柴油车载式混凝土泵车电气说明书Electric workbook for use and servicing1本5Operation Manual1本DEUTZ6Spare Parts Catalogue1本DEUTZ7机动车底盘出厂合格证Certificate of the chassis1张8东风汽车使用手册DongFeng car service manual1本9东风汽车质量保修手册Guarantee of DongFen

34、g car repairing1本10东风汽车技术服务站名录The list of DongFeng car service station1本11东风纯正配件宣传手册The propaganda manual of DongFeng fitting1本12发动机序列号拓印标签袋The engine number label bag1张13ZLJ5120柴油机车载式混凝土泵车零件图册The concrete pump manual2本14派恩空调使用保修手册PaiEn air-condition maintenance manual1本（二）配件类Fittings1遥控器Remote cont

35、rol1件2导向环Guiding ringq 2002件3混凝土活塞Concrete pistonq 2002件4管卡 180A(HBG3.7)Couplingq 180A2件5管卡 150A(HBG3.9A)Couplingq 150A2件6管卡 125A(HBG3.6)Couplingq 125A2件7管卡q 125A密封圈Sealing ringq 149X7.52个8管卡q 150A密封圈q 175X72个GB3452.1-82Sealing ring9管卡q 180A密封圈Sealing ringq 200X73个GB3452.1-8210清洗球Cleaning ballq 1252

36、个11清洗活塞Cleaning pistonq 1251个12橡胶弹簧Rubber spring0160402C00041个13汽车钥匙Car key3片14电控柜钥匙Electric control cabinet key3片15安装架钥匙Installation frame key2片16主机门钥匙Key2片17工作灯Working lamp1只18充气工具Tool for charge pressure1套用于蓄能器充气For accumulator19发动机钥匙Engine key2片DEUTZ20柴油机精滤Fuel filter01181245 或 011805972个DEUTZ21

37、机油滤清器Oil filter011744211个DEUTZ22液压油回油滤芯Return filter elementFBX-400X201个23液压油吸油滤芯Suction filter elementZL12BX-122/80W/HC1个24液压油吸油滤芯Suction filter elementZX-630X1001个（三）随机密封件Sealing accessory1套（四）清洗机部件类Water ejection device1喷枪 Ejection gun1把2进水胶管Hose for water suction1根3出水胶管Hose for water delivery1根4

38、备件 Accessories1袋（五）东风配件Dongfeng fittings1东风工具Dongfeng tools1包2千斤顶Jack1个（六）工具类Tools1内六角扳手Spanner for hexagonscrew3-171套九件套nine pieces per set2开口扳手Opened wrench7-321套九件套nine pieces per set3活动扳手Adjustable wrench2501把4活动扳手Adjustable wrench4501把5螺丝刀Screwdriver150X71把6螺丝刀Screwdriver200X81把7十字螺丝刀Crossed sc

39、rewdriver150X71把8十字螺丝刀Crossed screwdriver200X81把9钢丝钳Pliers1把10榔头Hammer1个11黄油枪Grease gun1个12呆扳手Unadjustable wrench60X551个13S管扳手Wrench for S vavle31A17A1把14滤清器扳手Wrench for filter76-1351把15内六角扳手加力杆Level(p 27X2-3501件1610”活扳手加力杆Level? 35X3-3501件17活塞扳手Piston wrench02B-P1件（七）裸装配件Without packed1锥管(HBG2.40)T

40、aper pipep 125Ap 150AX10001根2过渡管Transitional pipep 125Ap 125BX3001根3锥管(0019902A0310)Taper pipep 150AIp 180AIIX11001根4弯管(0019902A0157)Elbow pipep 180XR250A90- Z1根Pumping performance diagram 泵送曲线10080量60方4020001730Pumping performance diagram01730泵送性能曲线020406080100 120 140 160Pumping pressure(bar) 泵送压力

41、Laying 布料Laying is an important problem to the truck-mounted concrete line pump.If laying isnt on time,the phenomenon of pipe jam will happen.The methods are as follows:用车载式混凝土泵车输送混凝土，布料是很重要的问题。如果布料不及时，就会发生积 料、堆料现象，使泵送压力升高，易发生堵管。用车载式混凝土泵车施工时，一般可用下 述方法进行布料：Laying with groove 用溜槽布料In order to install

42、a inclined groove at the exit of the concrete pipe,the pipe should install higher and the groove can make revolving.将管道安装得高一些（1.21.5m），在混凝土输送管出口处接一斜溜槽。溜槽可做成可 旋转的，使布料面积增大。Laying with the handcart用手推车搬运布料Its used to affuse few concrete and some special places which the hose cant reach.这是一种简易的布料方法，用于混凝

43、土灌注量不大或某些特殊部位布料杆布料软管达不 到的地方。Laying with hose用布料软管布料In small pipe condition,laying with hose is very suitable.The hoses length has 3m and 5m and the minimal bend radiu is no less than 1.5m.这是应用较多的一种布料方法，尤其在小管径情况下，布料软管重量轻移动方便，在楼 面上布料是很适用的。布料软管的长度有3m、5m两种，工作时绳子捆住软管出口处，拖到需 浇注的各处，工作时软管最小弯曲半径不得小于1.5m。Layi

44、ng with placing boom 布料杆布料Laying with placing boom can quick and conveniently laying and the phenomenon of pipe jam isnt easily happen.In construction,the placing boom can laying at any places in available scope,it improves the efficiency and lighten the labor intensity.采用布料杆布料，可以迅速、方便地进行大范围布料，不容易发生

45、积料，堵管等现象。 在施工中通常把布料杆放置在需要浇注层面的中央，可旋转360，可以在布料杆有效范围内 任意位置进行布料，这样就可以大大地提高混凝土浇注施工效率，减轻工人的劳动强度，它 是一种较理想的混凝土布料机械。The analysis of ZOOMLIONs core pumping technology 中联重科核心泵送技术分析Double pumps provide oil intermittently 预压式双泵间歇供油The lubrication system has force filter and double pumps provide oil intermittent

46、ly. It makes better lubrication and lower cost. Bidirectional columniation grease lubrication pump improves the lubrication5 s reliability (Patent number is 95236140.X ).中联的润滑，采用强制过滤、预压式双泵间歇供油系统，供油充分，润滑效果好，并且 可通过控制程序对润滑油量进行调节，以达到保证混凝土质量和节约成本的目的。同时，“双 向随动柱塞式油脂润滑泵”(专利号为95236140.X)的运用，极大地提高了润滑系统的可靠 性。T

47、he patent technology of new type distributing cushion 新型分配缓冲专利技术Cushion device used for columniation oil cylinder of concrete pump ensures the big swinging moment, declines the concussion and improves the swinging cylinder and S pipe life(Patent number is 96224468.6).“混凝土泵用柱塞式油缸的缓冲装置”(专利号为96224468.6

48、)的运用既确保了大的 摆动力矩，又极大地降低摆动冲击，提高了摆动缸和S管的使用寿命。Intelligence control technology 智能控制技术The electric control display equipment has touch screen display status, fault self-examination and data management. At the same time, concrete pump control can be configured according to the users request(Patent number i

49、s 03248651.0).电控显示装置，实现了智能管理，具备触摸屏实时显示工况、故障自诊、数据管理等功 能，让用户实时了解设备运行状态。与此同时，具有自主知识产权的“混凝土泵控制器”(专 利号为03248651.0)的运用，为中联混凝土泵的电控系统锦上添花，可根据用户要求选配。Mixing seal device used for concrete pump混凝土输送泵搅拌密封装置Mixing seal device with independent knowledge property right constructs two blockade: one is high pressure

50、oil theca between wearable bearing and seal loop through especial structure; the other can discharge the concrete by leak through the first blockade, so the phenomena that mortar blocks the mixing axis doesnt happen, thus the mixing device life increases(Patent number is 200420068546.2).具有自主知识产权的混凝土

51、输送泵搅拌密封装置(专利号为200420068546.2 )的运用， 在搅拌装置中构筑了两道封锁线；第一道是通过特殊结构，在耐磨轴承与耐磨密封环之间形 成高压油膜，防止混凝土的砂浆渗入耐磨轴承与耐磨密封环之间的间隙；与此同时，通过两 格莱圈之间的泄浆孔将万一透过第一道封锁的砂浆泄出，这样就避免了砂浆卡死搅拌轴现象 的发生，进而极大地提高了搅拌装置的使用寿命。A pumping mechanism 一种泵送机构A pumping mechanism through especial structure can connect concrete cylinder with water tank a

52、nd hydraulic cylinder, so coaxiality between hydraulic cylinder and concrete cylinder increases, pumping resistance with no load reduces, thus the whole capability of concrete pump increases(Patent number is 200420068681.7).一种泵送机构(专利号为200420068681.7)，通过特殊结构，将混凝土缸、水箱、泵送 油缸联为一体，提高了泵送油缸与混凝土缸之间的同轴度，降低了空

53、机泵送阻力，进而提高 了混凝土泵的总体性能。Pumping output adjustment 泵送排量无级调节The variable adjustment technology of hydraulic control realizes the synchro change of the status and displacement.The electricity system doesn t need take part in, so it avoids electrical appliance work frequently and it works conveniently and

54、 safely.中联采用了液控无级变量调节技术，只要调节控制压力就可实现工况和排量的同步改变。 而不像电控排量调节系统那样需要电控系统参与，减少了中间环节，避免了频繁的电器运作， 方便、快捷、安全、可靠。The adjustment prolongs the systems life and doesnt connect with rotate speed, the diesel engine can continually keep optimal rotate speed.因为这是对各种工况的适应性调节，延长了系统的使用寿命。而且这种调节跟转速没有 任何关系，发动机可以始终保持最佳转速。A

55、djust displacement and improve the pumping system suction ability according to different concrete status.根据不同的混凝土状况来调节排量，还可以改善泵送系统的吸料性。Automatic high-low pressure switch 全自动高低压切换According to the pumping distance and height, the hydraulic system can automatically choose high or low pressure under com

56、puter control. If pipe is jammed during pumping, after the computer judges ,it will switch to high pressure automatically and then switch to low pressure.在计算机的控制下液压系统根据泵送的距离和高度自动选择高压或低压。在泵送过程中 如出现堵管计算机经过判断后自动切换成高压加以排除，然后自动切换到低压状态。During operation,only need pressing the electricity button lightly, al

57、l will be completed.操作的时候，只需要轻轻地一按这个电控按钮，就全部完成，不用拆管，没有任何泄漏。 可以快速排除堵管。这样做完全突破了传统的先停机再切换的模式，在泵送过程中都可以切 换，大大地丰富了泵的操作技巧。Quick-release piston technology 砼活塞自动退回技术Only need pressing the key,the piston will untread to the water tank and it saves time and labor.只需简单的按键，就能轻松地将砼活塞自动退回到水箱中，使传统方式更换活塞所需的2 小时，缩短到

58、15分种以内，省时又省力。In order to avoid piston abrasion during construction, pistons should be checked each time before pumping.因退出极为方便，可在每次泵送作业前先检查砼活塞避免因砼活塞磨损引起的施工中断。The quick replacement piston equipment adopts hydraulic and machinery doubly limit ,it is safe and reliable.采用液压机械双重限位，安全可靠,避免单一液压限位，阀误动作或油缸长时

59、间使用后泄 漏量增大，将混凝土带进水箱的安全隐患。Oil cleanness油液清洁度Cleanness is the reliable guarantee of the system. In practice, 80% faults arouse from cleanness.The cleanness of concrete pump in ZOOMLION through some measures can be ensured over NAS8:液压系统清洗度是系统运行可靠的保证，实践证明，液压系统80%的故障都是因为系统 不清洁引起的。中联拖泵清洁度通过下述措施保障系统清洁度在NA

60、S8级以上：Circulation wash after assembly is the premise of the system cleaning.After assembly, usingspecial filter car to circulate washing for 10 hours, it can clean out the dirt completely.装配后的循环冲洗一一系统初装后的严格清洗是系统清洁的前提。整机装配后，用专用 过滤小车进行了10小时的循环过滤冲洗，将制造过程中残留的污质彻底清除。Using high quality hydraulic oil is th