机械论文文献英文

发个样例给你看看大型轴齿轮专用机床设计的设计摘要：结合机电一体化的需要，设计以单片机作为控制系统的X-Y型工作台。通过对X-Y型工作台机械结构设计和控制电路接口的设计，阐述了机电一体化设计中的共性和关键技术。这种工作台通常与整机设计成一个整体，其形状，尺寸，结构因机器类型不同而有较大差异，但其工作原理有着共同点。关键词：X-Y数控十字滑台；机电一体化；单片机 Abstract : Combine mechanical-electrical integration’s need, design a Model X-Y workingbench with one-chip computer as the of the control system. Though describing the workingbench mechanical’s design of structure and interface of the control circuit to Model X-Y, have explained generality in the design of mechanical-electrical integration and its key technology. This kind of workingbench is usually designed with the complete machine into a whole , its form , size, there is a greater difference because types of the machine are different in the structure, but its operation principle has common point. Keywords: X-Y numerical control cross slippery platform; The mechanical-electrical integration; One-chip computer三人行资料网提供！

gvvvngfvjmhgjm

Full mechanization of rice production technologyAbstract The Application of plasma from the seeds and simple plastic tray nursery, paddy rotary mechanized and mechanized planting site preparation, field management, mechanical harvesting, the introduction of the full mechanization of rice production technologies that increase production of rice provided for reference. Keywords: Rice; full mechanization; production technology Rice is one of China's major food crops. To stabilize and increase rice production capacity, promote rice yield, income and efficiency of the section, should vigorously promote the use of full mechanization of rice production technology. A plasma seed treatment technology Plasma seed treatment technology, is the national "863" scientific research, for domestic initiative, an original innovation, reached the international advanced level in the same area. DL-2-based plasma seed processor, using high-pressure arc plasma and the combination of alternating electromagnetic field , the formation of the universe in the plasma environment inside the machine, vertical seed flow through the free fall machine, receiving light radiation, electromagnetic radiation and the combined effect of ozone, the vitality of seeds is activated, the virus is killed, ion exchange capacity increased, the enzyme conversion speed, soluble sugar and soluble protein increases, increase seed germination potential, germination rate, seedling ahead 1 ~ 3 d, increase drought resistance of crops, disease resistance. rhizobia increased the effective promotion of the late crop growth. Plant stout, growth strong increase effective tillering, promote early, improve quality, can increase the yield of 8 to 12%. Rice seeds with DL-2-based plasma seed processor treatment, current intensity should be A, continuous processing 2. Processing within 5 ~ 12 d after sowing. Plasma can not do the descendants of the seed crop seeds. Treatment Sowing the seeds can not be repeated more than treatment, can not handle the seeds have germinated. 2 simple plastic tray seedling technology Chuangtu prepared The best selection of mountain peat, followed by paddy field soil and dry soil; with soil quantity: the number of breeding decisions based on the amount of use of land, generally each plate Chuangtu 4 kg; paddy soil and upland soil should be added to amount to do Chuangtu peat, soil and peat were mixed with a 4:1 ratio [1]. Chuangtu preparation Added nutritive soil, according to the proportion of requests are mixed, each plate Chuangtu nitrogen, phosphorus and potassium in bed all ~ g. of acid, pH value of to is appropriate. Chuangtu with water disinfection, with Nixon 1 500 times the enemy poured per plate kg, the number of enemy Eriksson must not exceed g. per plate promote the use of "mother agent of rice seedling nutrition soil", follow the instructions to mix well. mechanized planting 2SB-500 automatic with a planter, or 2BD-840 push-type seeder mechanized planting, ensure the bud seed / m2; subsoil thickness is ~ cm, Futuhoudu is ~ cm. Seedling Management Leaf emergence to , should ensure that the day temperature 28 , can not exceed 30 , the night is not lower than 5 , 1 ~ 2 d 1 permeable water; to leaves, the daytime temperature should be guaranteed shed 22 , anti-high temperature leggy; to leaves, the day the greenhouse temperature 20 , the night of not less than 10 , day and night ventilation can be hardened; to leaves, the 2 times a day pouring water. respectively , leaves and planting early, combined with water to recover pure N lg per plate after washing. reposted elsewhere in the paper for free download 3 mechanical rotary technology of paddy field Paddy paddy rotary machine can be turned off to complete, machine rake, reducing mechanical operating costs, reduce operational links, labor, save time, fuel, and water saving bulb fields can be saving 30% to 50%. Its rotary operation pulverizer capacity, the surface smooth. mulching rice tight, high efficiency, low fuel consumption, a rotary plow to achieve normal operating times and the harrowing effects of the pulverizer, topsoil breathable, good water permeability, is conducive to root Development [2]. the technical requirements: First, Rotary paddy fields, generally in the local planting before (May) 20 d or so, pour fields until after the planting can be formed; Second, farming, the tail wheel tube extension Source tube length can not exceed 100 mm, while the operation should be standing hand rails frame, so coulter or too off the ground over the ridge groove, so as not to bend the inner tube; third operation, without rendering the rotary knife wound weed too much, otherwise it will consume Power and increase tractor parts wear; Fourth, removing weeds, the need to turn down the throttle, the clutch, brake handle on the "off" position, the variable speed operation of the handle and the rotary blade the handle on the neutral position, and then clear the weeds 4 mechanized planting site preparation techniques Plots to Baping, rake thin, water depth 2 ~ 4 cm, the general precipitation 1 ~ 2 d, depending on the soil may be. Rake the soil to fine, leveling, mud rotten, no debris, depth of 2 ~ 4 cm, rake take some time after the deposition, usually 1 ~ 2 d; planting a row spacing of 30 cm, spacing according to species debugging. inserted 2 to 4 / hole, 5 to 7 post-plug / hole. planting depth of 2 ~ 3 cm for the should not be too deep, so as not to affect the tiller. 5 mechanization of field management Eastern red card throwing machine can be a machine, can throwing, but also fertilizer and spraying, to prevent disease, insects, weeds and other effects [4]. 6 mechanized harvest technology of rice Mechanization of rice paddy harvest is to achieve an important element of full mechanization. Harvested by combine harvester, a complete harvesting, threshing, cleaning and other processes. Compared with the manual harvesting, mechanized harvesting of rice. Can improve productivity, reduce harvest losses to save costs, reduce labor intensity and improve production conditions of farmers. 7 References [1] Yang, Wang Chunsheng, Su Hoon Lee, et al. Alpine region mechanized cultivation of rice seeding rate on rice in different disk seedling quality and yield [J]. RICE, 2006 (5) :27-29. [2] Xia item. On the mechanization of rice cultivation techniques [J]. Agricultural Equipment & Technology, 2006,32 (4): 14. [3] Wang Zhongyou, Xu Lianxi. Friendship Farm Mechanization of Rice Cultivation Experience [J]. Modernization of agriculture, 2001 (1) :37-39. [4] Zhong-ping, cabbage, Chen Chuan, et al. City of Rice Development serve organization of [J]. Anhui Agricultural Sciences, 2007,35 (7) :2104-2105. 水稻机械抛秧栽培技术摘要主要论述了水稻机械抛秧栽培技术,包括整地、育苗、抛秧密度与时间、抛秧前准备、抛秧机操作、抛秧后田间管理等内容,对推广和普及水稻机械抛秧技术、解决当前水稻旱育苗人工插秧工效低、成本高等问题具有一定的指导作用。 关键词水稻;机械抛秧;整地;育苗;抛秧机操作;抛后管理 水稻机械抛秧是实现水稻秧苗移栽的主要方法之一,具有生产成本低、效率高、灵活简单、适应范围广和分蘖早、返青快、低节位分蘖、根系发达、生长旺盛、通风透光好、有效成穗数多、产量高、经济效益显著等特点。另外,小型风力水稻抛秧机可一机多用,既能抛秧又能喷洒农药,可作为一个理想的植保机械使用,机械利用率高。为了使广大农民更好地掌握水稻机械抛秧技术,现将笔者多年来的实践经验及理论探讨加以总结,以期为该技术的更好发展奠定基础。 1整地 采用机械旋耕或机械翻耙的方法进行整地,要求耙透、磨细、整平,并深埋秸草(秆),做到田平、泥活、泥细,呈瓜皮水状态,田表面成泥浆状[1]。同一地块要达到高低不过寸,寸水不露泥,地表干净无杂物。将耕整好的秧田沉淀10～48 h,一般砂壤田沉淀10～24 h,黑黏土沉淀30～48 h。如果不经过沉淀,秧苗抛入田里后,秧苗会随活泥被吸入泥里,影响秧苗生长和低位分蘖。沉淀要始终保持田面有水,抛秧是以寸水为宜,过深容易漂秧,过浅或无水,不利于秧苗定植,之后始终保持寸水,切勿晒干田。 2育苗 水稻机械抛秧必须使用钵盘育苗,钵盘以434孔为最佳。配制好营养土,除加入保证秧苗生长的氮、磷、钾肥外,还要添加适量的矮壮素;育苗土配置要有一定黏度,最好加入20%左右黄土,以防止抛秧时秧苗土团散落[2]。播种后秧盘表面覆土要刮净,避免连根。抛秧前一天苗床浇水即增加土坨重量,又不会使秧苗过湿,有利抛秧,拔苗时将连根苗分开[3],拔下秧苗后装入丝带,每带装盘数做到心中有数,以便按大田面积抛秧。要求秧苗高度8～15 cm,一般为3叶1心,秧龄在20～25 d较为适宜。秧苗土钵含水率应为40%～60%,手指挤压不散碎为宜。秧苗根部带泥,泥要有一定的黏性,形成泥坨,便于抛出和秧苗着泥直立。秧苗质量要达到叶色深绿、健壮、长势均匀,白根缠绕,无病害、并且有弹性[4]。 3抛秧密度与时间 水稻靠有效分蘖增产,不能过多增加穴数,栽植过密容易造成通风透光不好,影响分蘖率,茎秆细软,遇风容易倒伏,造成减产。机械抛秧时要注意将定量秧苗抛撒均匀,稻田畦埂周边可适当加密。以434孔钵体盘为例,按水田行株距9 cm×4 cm计算,应抛入550盘/hm2为宜;按水田行株距9 cm×6 cm计算,应抛入400盘/hm2为宜。根据作物品种和各地实际情况确定。适时抛秧是抛秧成败的关键,不同土壤耕地后沉淀时间不同,过软过硬,都不利抛秧,一般是耙后沉淀10～24 h即可抛秧。简易确定抛秧时间就是将秧苗举过头顶,松手落下秧苗,秧苗土坨入土2/3部分为最佳时间。抛秧宁早勿晚,根据各地土壤条件灵活掌握。 4抛秧前准备 背负式气流水稻抛秧机的抛秧原理是利用发动机高速旋转时产生的强大风力气流,经通风管连接在储秧盘的圆弧形抛秧槽上,靠强劲风动气流将秧苗抛出,然后按抛物线飞行,当秧苗飞到最高点时,往下作自由落体运动。由于秧苗根部带有泥坨较重,秧苗着泥后,自由定植直立。抛秧前先检查发动机与储秧盘的连接支承架、通风管是否连接可靠,按规定比例将汽油和机油进行均匀混合,比例为20∶1;然后加入油箱,在加油时必须保持加油用具干净卫生,并远离火源。严禁操作人员打火吸烟,以防止火灾发生。启动发动机待运转正常后,进行试抛,根据实际需要调整好储秧盘抛射仰角度。大风天不能抛,原则上在三级风即应停止抛秧;下雨天不能抛秧;水层过深不能抛,应立即排水,到寸水不漏泥方可抛秧;沉淀时间过长,地板结不能抛秧;秧苗过高不抛秧。一般秧苗控制在10 cm最佳,超过12 cm时应将苗尖切除一部分,然后再抛秧。 5抛秧机操作 抛秧机作业时,一般采用梭形行走法。在无风的天气,应根据田块形状决定行走方向;如遇有风天气,应尽量顺风向平行作业,以便提高抛秧的均匀度。启动发动机时,先将风门打开1/2,待启动后再全部打开。严禁猛轰油门,以防造成拉缸事故。在开始抛秧作业前,尽量将储秧盘装足,然后根据田块大小调整好抛射距离和高度,加大油门,两手相互配合连续不断地将秧苗输送到储秧盘的圆弧形抛秧槽内。在一般情况下将储秧盘仰角调整为45°左右较为适宜。近距离抛秧或田块较小时,可采用减小油门的方法进行抛秧作业。操作手也可适当加大或减少喂入量来调整秧苗稀密程度。随时注意观察秧苗飞行方向和着落点,尽量达到稀密均匀,合乎农艺高产技术要求。有风天,应顺风抛秧,逆风补秧;利用油门控制先抛远处,然后再抛近处;少拨快送,就是每次拨苗要少,拨动速度要快,这样会使抛秧更加均匀;抛秧时要求第1遍抛秧稍稀,然后再补抛1次,这样会更均匀。 6抛秧后田间管理 抛秧后倾斜苗无需扶正,人工扶秧反而会影响秧苗扎根,尤其是抛秧后2～3 d,人工扶秧苗则会加重损伤秧苗,造成新生根折断。抛秧后始终保持田面寸水即可,7～10 d为扎根立苗期,要特别注意田间水层管理,以瓜皮水为宜;如遇降雨,田面水层过深要及时排放[5]。扎根立苗后喷施封地农药,其他田间管理按常规进行即可。 7参考文献 [1] 王振洪,张丽辉.水稻软盘育秧及抛秧技术[J].中国农村小康科技,2008(5):28-29. [2] 周丽芳,毛盛河,王小明,等.水稻免耕抛秧技术[J].内蒙古农业科技,2007(6):115-117. [3] 乔长虹,王彬.水稻机械抛秧技术[J].农机使用与维修,2008(5):89. [4] 栾静,张雪保,杨平,等.郑州沿黄稻区水稻盘育抛秧栽培技术[J].河南农业科学,2006(7):30-31. [5] 吴勇贤.有机水稻栽培技术[J].北方水稻,2010(1):41-43.

机械,机电类毕业设计1毕业设计 可伸缩带式输送机结构设计 2毕业设计 AWC机架现场扩孔机设计3毕业论文复合化肥混合比例装置及PLC控制系统设计 4机械设计课程设计 带式输送机说明书和总装图4毕业设计 冲压废料自动输送装置 5专用机床ＰＬＣ控制系统的设计 6课程设计 带式输送机传动装置 7毕业论文 桥式起重机副起升机构设计 8毕业论文 两齿辊破碎机设计 9 63CY14-1B轴向柱塞泵改进设计（共32页，19000字） 10毕业设计 连杆孔研磨装置设计 11毕业设计 旁承上平面与下心盘上平面垂直距离检测装置的设计 12.. 机械设计课程设计 带式运输机传动装置设计 13皮带式输送机传动装置的一级圆柱齿轮减速器 14毕业设计（论文） 立轴式破碎机设计 15毕业设计（论文） C6136型经济型数控改造(横向) 16高空作业车工作臂结构设计及有限元分析 17 2007届毕业生毕业设计 机用虎钳设计 18毕业设计无轴承电机的结构设计 19毕业设计 平面关节型机械手设计 20毕业设计 三自由度圆柱坐标型工业机器人 21毕业设计XKA5032A/C数控立式升降台铣床自动换刀设计 22毕业设计 四通管接头的设计 23课程设计：带式运输机上的传动及减速装置 24毕业设计(论文) 行星减速器设计三维造型虚拟设计分析 25毕业设计论文 关节型机器人腕部结构设计 26本科生毕业设计全套资料 Z32K型摇臂钻床变速箱的改进设计/ 27毕业设计 EQY-112-90 汽车变速箱后面孔系钻削组合机床设计 28毕业设计 D180柴油机12孔攻丝机床及夹具设计 29毕业设计 C616型普通车床改造为经济型数控车床 30毕业设计（论文）说明书 中单链型刮板输送机设计 液压类毕业设计1毕业设计 ZFS1600/12/26型液压支架掩护梁设计2毕业设计 液压拉力器 3毕业设计 液压台虎钳设计 4毕业设计论文 双活塞液压浆体泵液力缸设计 5毕业设计 GKZ高空作业车液压和电气控制系统设计 数控加工类毕业设计1课程设计 设计低速级斜齿轮零件的机械加工工艺规程 2毕业设计 普通车床经济型数控改造 3毕业论文 钩尾框夹具设计（镗φ92孔的两道工序的专用夹具） ...4 机械制造工艺学课程设计 设计“拨叉”零件的机械加工工艺规程及工艺装备（年产量5000件）5课程设计 四工位专用机床传动机构设计 6课程设计说明书 设计“推动架”零件的机械加工工艺及工艺设备 7机械制造技术基础课程设计 制定CA6140车床法兰盘的加工工艺，设计钻4×φ9mm孔的钻床夹具 8械制造技术基础课程设计 设计“CA6140车床拨叉”零件的机械加工工艺及工艺设备 9毕业设计 轴类零件设计 10毕业设计 壳体零件机械加工工艺规程制订及第工序工艺装备设计 11毕业设计 单拐曲轴零件机械加工规程设计说明书 12机械制造课程设计 机床传动齿轮的工艺规程设计（大批量） 13课程设计 轴零件的机械加工工艺规程制定 14毕业论文 开放式CNC（Computer Numerical Control）系统设计15毕业设计 单拐曲轴工艺流程 16毕业设计 壳体机械加工工艺规程 17毕业设计 连杆机械加工工艺规程 18毕业设计(论文) 子程序在冲孔模生产中的运用——编制数控加工（1#-6#）标模点孔的程序 19毕业设计 XKA5032A/C数控立式升降台铣床自动换刀装置的设计 20机械制造技术基础课程设计 设计“减速器传动轴”零件的机械加工工艺规程（年产量为5000件） 21课程设计 杠杆的加工 22毕业设计 多回转电动执行机构箱体加工工艺规程及工艺装备设计 23毕业论文 数控铣高级工零件工艺设计及程序编制 24毕业论文 数控铣高级工心型零件工艺设计及程序编制25毕业设计 连杆的加工工艺及其断面铣夹具设计 26机械制造工艺学课程设计说明书：设计“CA6140车床拨叉”零件的机械加工工艺及工艺设备 杂合XKA5032AC数控立式升降台铣床自动换刀装置设计机用虎钳课程设计.rar行星齿轮减速器减速器的虚拟设计（王少华）.rar物流液压升降台的设计自动加料机控制系统.rar全向轮机构及其控制设计.rar齿轮齿条转向器.rar出租车计价系统.rar（毕业设计）油封骨架冲压模具连杆孔研磨装置设计 .rar蜗轮蜗杆传动.rar用单片机实现温度远程显示.doc基于Alter的EP1C6Q240C8的红外遥器（毕业论文）.doc变频器 调试设计及应用镍氢电池充电器的设计.doc铣断夹具设计型双动拉伸压力机的设计WY型滚动轴承压装机设计Z32K型摇臂钻床变速箱的改进设计基于PLC高速全自动包装机的控制系统应用基于单片机控制的步进电机调速系统的设计普通-式双柱汽车举升机设计无模压力成形机设计(word+CAD)手机恒流充电器的设计3 摘要.doc智能型充电器的电源和显示的设计气动通用上下料机械手的设计同轴2级减速器设计行星齿轮减速器减速器的虚拟设计（王少华）运送铝活塞铸造毛坯机械手设计_王强CA6140车床后托架加工工艺及夹具设计SSCK20A数控车床主轴和箱体加工编程织机导板零件数控加工工艺与工装设计密封垫片冲裁模设计瓶盖拉深模的设计手机塑料外壳注塑模毕业设计五 OO:348414338