太原理工大學(xué)陽泉學(xué)院-----畢業(yè)設(shè)計任務(wù)書 第 1 頁 共 2 頁任務(wù)書一、 畢業(yè)設(shè)計題目EBZ 掘進(jìn)機(jī)截割部結(jié)構(gòu)設(shè)計二、畢業(yè)設(shè)計提供的原始數(shù)據(jù)資料1.截割機(jī)構(gòu)具有可伸縮性，伸縮量 550mm；2.截割減速器采用兩級行星減速形式；3.截割減速器按 200Kw 設(shè)計，截割頭轉(zhuǎn)速按 46r/min，截割頭線速度為 3m/s，工況系數(shù)按 1.75 計算；4.輸入、輸出聯(lián)軸節(jié)采用花鍵聯(lián)接；5.工作要求：每天工作 10 個小時，壽命為 15 年，且要求該行星減速器傳動結(jié)構(gòu)緊湊，外輪廓尺寸較小。三、畢業(yè)設(shè)計應(yīng)完成主要內(nèi)容：1、畢業(yè)設(shè)計說明書：(1)截割部方案選擇(2)結(jié)構(gòu)計算2、畢業(yè)設(shè)計圖紙：（1）截割部總裝圖（2）伸縮臂裝配圖（3）減速器裝配圖 （4）輸入軸，低速級行星架零件圖（5）設(shè)計說明書(不少于 40 頁)四、畢業(yè)生應(yīng)提交的畢業(yè)設(shè)計資料要求1、畢業(yè)設(shè)計說明書：一份2、畢業(yè)設(shè)計圖紙：（1）截割部總裝圖 1 張（A0）（2）伸縮臂裝配圖 1 張（A0）（3）減速器裝配圖 1 張（A0）（4）輸入軸，低速級行星架零件圖 2 張（A1）（5）設(shè)計說明書(不少于 40 頁)五、設(shè)計進(jìn)度安排（從第六周起）序號 時間 周次 設(shè)計任務(wù)完成的內(nèi)容及質(zhì)量要求1 3 月 31 日~4 月 6 日 第 6 周 收集 查詢 整理 有關(guān)的資料2 4 月 7 日~4 月 13 日 第 7 周 總體方案研討,確定及草圖繪制3 4 月 14 日~4 月 20日 第 8 周 確定及草圖繪制太原理工大學(xué)陽泉學(xué)院-----畢業(yè)設(shè)計任務(wù)書 第 2 頁 共 2 頁4 4 月 21 日~4 月 27日 第 9 周 結(jié)構(gòu)理論計算5 4 月 28 日~5 月 4 日 第 10 周 繪制總圖正式圖6 5 月 5 日~5 月 11 日 第 11 周 繪制減速器裝配圖7 5 月 12 日~5 月 18日 第 12 周 繪制減速器零件圖8 5 月 19 日~5 月 25日 第 13 周 繪制伸縮臂裝配圖9 5 月 26 日~6 月 1 日 第 14 周 繪制截割部總裝圖10 6 月 2 日~6 月 8 日 第 15 周 打說明書11 6 月 9 日~6 月 15日 第 16 周 打印和裝訂12 6 月 16 日~6 月 22日 第 17 周 教師評閱和開始答辯六、主要參考文獻(xiàn)資料1、工具書：機(jī)床圖冊機(jī)床設(shè)計手冊機(jī)械零件設(shè)計手冊機(jī)械制圖2、參考資料：《工程力學(xué)》 《公差配合與測量技術(shù)》 《機(jī)械設(shè)計手冊》 《機(jī)械加工工藝手冊》 《機(jī)械設(shè)計基礎(chǔ)》 《掘進(jìn)機(jī)械設(shè)計》《中國采礦設(shè)備手冊》（下）七、簽字欄簽 字 欄姓名 專業(yè) 班級畢業(yè)生 要求設(shè)計工作起止日期 20**年 3 月 31 日~~~20**年 6 月 1 日指導(dǎo)教師（簽字） 日期 20 年 月 日教研室主任審查（簽字） 日期 20 年 月 日教師審核系主任批準(zhǔn)（簽字） 日期 20 年 月 日外文文獻(xiàn)The mechanical boring machine is mining and tunneling industry application the mechanical boring machine has the unique performance and the flexibility, can the tunneling softly to the medium intensity rock layer, therefore, widely uses in the underground mining and tunnel's tunneling. Mechanical boring machine's success applies a crucial question is development ability accurate and the reliable estimate digit, machine production ability and the correlation position cost. Recently this article introduced and discusses the work which completed to take the forecast model which in the geomechanics research institute Colorado Mining Academy on the use historical data use displayed. This model is based on the data which widespread collects on the spot, from different mechanical boring machine motion, in various geological stratum. This document also discussed has developed this database, as well as produced from this real diagnosis performance prediction equation obtained estimate mechanical boring machine cutting rate and bit expense. widely uses the machinery to excavate the system is more and more tremendous pressure which one tendency subscribes, leaves the tradition to mining and the civil construction profession to drill digs and demolishes the method, enhances the productive forces and reduces the cost. The extra advantage, the mining machine, including the remarkable improvement security, reduced the ground safeguard request and the few personnel. These superiority, in addition recently strengthened in the mechanical machine's performance and the reliability, has caused in the mechanical miner to adopt the big share ledge excavation market. the mechanical boring machine is the most widespread use underground portion cross section excavates machine, softly to medium intensity rock, specially sedimetary rock. They are use in expanding and the production in soft rock mining industry (i.e. main haulage drift, tunnel, cross reduces and so on), specially in coal, industry mineral and evaporite. In the civil construction, the widespread utilization which they find, excavates the tunnel (railroad, road, sewage treatment, conduction current hole and so on), in the soft ground situation, as well as to expand each kind of underground structure which and be restored to health. Their ability, excavation, nearly any individual opening, also causes them to be attractive, these mining and civil construction project's each kind of open size and the configuration files need to construct. in addition, its high fluidity and the flexibility, the mechanical boring machine is the universal somewhat low capital cost system compares, other mechanical excavators. Because of the high cutting power density, as a result of the small cutting drum, they provides ability, the excavation rock is more difficult and the grinding compound compared to theirs colleague, like continual miner and clothes eating insect.Past 50 year mechanical boring machine the mechanical boring machine developed for the first time the machinery excavated the coal in the early 50s. Today, its application domain expanded, surpasses coal mining, because increases unceasingly the performance brings new technological development and design improvement. The major betterments measure has obtained increase which with steady steps constituted in the past 50 years, the machine weight, the size and a cutting authority, the improvement design upsurge, the solemn gram took up the load system, a more effective cutting design, the metallurgy development, was cutting the drill bit, the progress, the hydraulic pressure and the electrical system, and widely used the automation and the remote control function. All these, have caused the intense enhancement, in cutter's ability, system's usability and service life. the machine's weight has reached as high as 120 tons, provides is stabler and severer (few vibrations, few services) the platform, from a higher thrust force, may produce an attack more difficult rock layer. Should cut head's authority already to have obvious increase, the close 500 kilowatts let the high torque ability. The modern machine has ability to reduce the cross section to surpass 100 square meters from a fixed point. The computer auxiliary cutting lacing design already developed a stage, causes the design the most superior position layout, will achieve the maximum efficiency will meet in the rock and the geological condition. Cuts the drill bit to evolve, from simple chisel strong cone-shape position. This silt's collection and the transportation system have also experienced the significant improvement, increases productivity which can achieve. Loads the aircraft parking area, now may make takes a delaying merely provides the mobility and the flexibility. The machine may provide with the rock anchor rod supports and protections and suppresses the dust automatically the equipment, enhances the trouble-free service personnel's title. They may also provide the laser guidance linear control system, lets the camp manage business the sensitivity to reduce, in addition increases the working efficiency and the productive forces. Chart - 1 has demonstrated one modern crosswise mechanical boring machine and the expansion arm and the anchor rod supports and protections system.Fluidity, flexible and selective mining ability constitution some most important application superiority mechanical boring machine leadership, by cost effective motion. The fluidity is refers to easily to move, from a face to another one, deals with the daily development and the production request, does not have the land mine. The flexibility, the permission fast change's service condition, like the different open pattern (horse shoes, rectangle and so on), the lateral section size, the gradient (most 20, sometimes 30 degrees), as well as the radius of turn (may make 90° curve nearly). The selectivity is refers to has the different partial mixings which ability unearths to be possible to pick facing the place ore separates, reduces dilutes, and reduces the waste treatment as far as possible, is also helpful in enhancing the productive forces. Is partial - faces the machine from the mechanical boring machine, facing is convenient, therefore, the cutting tool, may inspect and easy change, may install with the roof support in faces very close. In except these, the high productivity in the advantageous surface condition, the improvement security, reduces the ground support and the well ventilated request, all, thus reduced the cost which excavates is other important superiority, mechanical boring machine. the adamant cutting ability mechanical boring machine is the most important restriction factor, affects their application. This is mainly because wears high the resistance position which experiences in diligently, grinding compound crag. Nowadays, the heavy mechanical boring machine may reduce in the economy hard rock layer most 100mpa (14500 PSI) single axle compressive strength (UCS) and rock most 160mpa (23000 PSI) UCS number. The frequency increases the attachment or other rock's weakness, makes ledge excavation to be easy, because the machine pulls or rips radically leaves the block, but is not reduces. If sincere is the unusual grinding compound, or the rise, the consumption rate compares the L recovery/cubic meter, then the mechanical boring machine excavates, usually becomes does not reckon up as a result of frequently the position change, in addition increased machine's vibration and the maintenance cost. the substantial efforts, ability mechanical boring machine which increases in the past several years reduced the hard rock. The majority of these endeavor's key point is the constitutive change, the machine, if puts on weight, a severer frame and cuts an authority. Widespread field test these machines indicated that the cutting tool was still a weakest spot, in hard ledge excavation. Only if improved largely has obtained a point life, genuine hard rock cutting was still the surmounting boundary possibility and the mechanical boring machine. Geomechanics research institute electromagnetic interference (EMI) the Colorado Mining Academy has been developing one kind of new cutting tool technology, the miniature disc machine, carries out the hard crag cutting power disc cutter bar to the mechanical boring machine, as well as other type mechanical excavator (Ozdemir et al., in 1995). Carries on the chemical examination massively comprehensively, standard crosswise cutting indicated that the miniature disc cutting tool may enhance at the same time which ability the mechanical boring machine hard crag excavates, provides the small cutting tool's change and the service work suspension. This new machining technology has the greatly hopeful application mechanical boring machine, lengthens their ability, becomes the economy to excavate the hard rock. In addition, uses the small compact disc cutting tool, the drum miner's concept EMI which develops has been suitable for the hard crag mine development.Related domain performance data the performance prediction is an important attribute, the success mechanical boring machine's application. This involves general and machine's choice, the production rate and the bit cost estimate. The success using in order to the mechanical boring machine technology's any mining work, accurate and the reliable estimate number is the developed country to achieve the productivity, and reduces the cost relatively. In addition, it is the rock condition which the very important drill bit design and a cutting layout optimize, must unearth in the process to meet. the performance prediction covering appraisal instant reducing the interest rate, drill bit's consumption rate and the machine use factor, are the different geological units. The instantaneous cutting speed is the output velocity in the actual cut time, (ton or cubic meter/cutting hour). The rise, the consumption rate is refers to has how many change for the better change, each unit volume either weight ledge excavation, (recommendation/cubic meter or ton). The machine use factor's percentage uses the time, excavates the period, this project. the geomechanics research institute Colorado Mining Academy, has established the widespread database related domain performance mechanical boring machine and the objective development real diagnosis model together with the mining industry department Istanbul Technology University, for accurate and perform reliably forecast. the database contains the field data form numerous mining and the folk items of basic construction in the world including each kind of mechanical boring machine and the different ground project condition. The real diagnosis performance prediction method is mainly the basis former experience and the statistical data explanation, beforehand record medical record. Obtains the field data which needs in one practical and the meaningful form, the acquisition of information table compilation and the transmission for the prime contractor, the owner, the Consultant firm, with mechanical boring machine manufacturer. In addition, data collection, from existing literature to mechanical boring machine's performance, and through actual visitation operational site. This data collection work is continuing to carry on. this database including six category material, like table - 1. Geological parameter in database, constitution general rock mass and complete rock character. Most important and the related rock mass characteristic carries in this database including the rock mass quality title (RPD), bedding thickness, strike and inclination angle union collection and hydrology condition. The complete rock character is the single axle compressive strength, the tensile strength, the quartz content, the texture and abrasiveness. This rock layer divides into the independent area, by reduces the change as far as possible, in the mechanical property data, provides a more accurate analysis. This also simplified the classified attribute as each region and the analysis domain performance data.Performance prediction in the formerly research (Qiao Poore et al., in 1997), some people in attendance suggested that but is not a developing country universal performance prediction model, the independent model different geological condition and the machine (according to classified and afterward normalized domain's data) should formulate, improves accurate and reliable performance forecast. This method was introduces and discussed in this aspect document, for instantaneous cutting speed (to ICR) and position consumption rate (BCR). The mechanical boring machine and a cutting type, the rock mass origin and the rock type are use for to take classified the main parameter. This single axle compressive strength (UCS), cutting first-class honor rate (P) mechanical boring machine's weight (W) and a cutting diameter (coronary disease) is uses for to take normalized the parameter. change ICR and in the UCS foundation, the available column's performance data, is in digit - 3 all type mechanical boring machine which and meets for all geological condition. One like anticipated, the data demonstrated that the remarkable scattering and the low correlation coefficient, do not allow between any tendency inference UCS and ICR. After the leaving job data for the crosswise mechanical boring machine in the sedimetary rock, scatters into is much smaller, demonstrated digit - 4. Also, the correlation coefficient was low, removes an accurate expression any to relate these two variables. Because is P which and W is proportional and is in reverse proportion UCS to ICR, after the normalization, by the nature (P/UCS), (the u /UCS) and (the PXW /UCS), the relevance is the remarkable improvement, demonstrates in the digit 5, 6th and 7. As a result of obviously, the classification and afterward normalization, have had some explicit tendencies, in data. But the relations were still inaccurate insufficient. until now result indicated that this method's cause the more accurate prognostic equation all along application classification and the normalization to the database. At present, the work is being carried on the extra parameter (i.e. quartz content) to the developed country equation, by further improves its accuracy and Dan's serviceabilitythe effect of cutting head shapes on roadheader stabilityO.Acaroglu and H.Erginamongst mechanised excavation equipment, roadheaders have an exceptional role. Determination of the stability state of the roadheader is an important parameter for the efficiency of excavation. For roadheader having equal power and weight, if one is more stable than another, it can respond to higher boom forces. A new computer program was developed to analyse the stability of the roadheader (turning around the vertical axis, turning to the side, turning backwards and sliding) can be obtained using this program. In this study, the effects of the cutting-head shapes (spherical, conical and combined heads ) were investigated by applying this method to the stability of a longitudinal type roadheader. Turning around the vertical axis of the machine was found to be the most critical stability state. Among the different cutting head shapes, spherical heads had the lowest moment values for similar tilt angles. An increase in the moment values for all cutting shapes with this stability state. However, small tilt angles of the pick are commonly used due to their high efficiency. The increase in the tilt angles of the picks negatively affects the sliding state of the roadheader for all cutting shapes, especially conical heads. The stability state of the roadheader in turning backwards and turning to the side were slightly affected by changes to the tilt angles of the picks.The results obtained are valid for all cutting sector, however, a 90° cutting sector was more convenient than a 180° cutting sector due to lower boom reaction forces.Keywords: Roadheader ; Stability; Cutting-head shape; Mechanised excavation.INTRODUCTIONHundreds of kilometres of tunnels are now being excavated in mining and construction projects and such tunnels need to be excavated quickly and safely. Therefore, mechanical excavation systems have replaced conventional methods in underground mining and civil tunnelling projects in recent years.Roadheaders have an exceptional place among other mechanised excavation systems.They have a lower initial investment cost than the full-face excavation machinery and are sufficiently flexible to excavate galleries in various shapes.Besides driving tunnels, they have receives wide-spread use in production processes such as the excavation of coal, evaporates, industrial minerals and metallic ores.However, they are not suitable for hard rock conditions and are mostly used for excavating stable rocks of low-to-medium hardness.Roadheaders are generally classified according to their weight-light, medium, heavy, extra-heavy. With increasing weight, they can accommodate higher cutting conditions. However, increased weight comes with an increase in the capital cost of the machine and can also create sinking problems in the wet ground. Conversely, some stability problems may occur in the use of light-weight machines during the cutting of high-strength rocks. For this reason, side and back stabiliser pistons are added to these machines but these may not solve the problems encountered in wide and wet tunnels.Some researchers have stressed the importance of stability and compared longitudinal and transverse head type roadheaders. A longitudinal cutting head has a single head fixed parallel to the boom axis. However, the transverse cutting head has two symmetrically positioned cutting head with their axes perpendicular to the boom axis. It is claimed that the longitudinal head type roadheaders are more sensitive than transverse head type roadheader to stability in horizontal directions. This is because the horizontal boom force acting on a longitudinal cutting head is greater than that on a transverse head for comparable machine output and cutting capacity. Hence, it is claimed that longitudinal head type machine need to be 20-25% heavier the than transverse type machine for the same cutting conditions. It is reported that the transverse type roadheader can cut higher strength rock than the longitudinal types for the same cutting power due to higher stability in the horizontal direction. Conversely, transverse cutting head roadheaders are more stable in vertical directions than longitudinal head roadheaders due to the higher vertical boom forces.These studies are based on practical observations or qualitative approximations about the stability of roadheaders. Stability states of roadheaders must be studied in detail to produce more compact machines that are capable of cutting high-strength rocks. For this reason, a method was developed to analyse the stability of roadheaders quantitatively and, based on this method, a computer program was written. Values calculated from this program can be used to compare the stability states of the various roadheaders under similar cutting conditions and different operational conditions. The effects of the machine and cutting head design parameters on the stability of roadheaders can also be determined with this program. The cutters (picks) are arranged as a group in the cutting head, so the cutting head design parameters affect the performance of roadheaders. The positions of the cutters determine the geometry (shape) of a cutting head. The torque, boom forces and specific energy of the machines are changed, while changing the cutting head geometry. Three different cutting head shapes (spherical, conical, cylindrical) and combined heads are commonly used. Since the boom forces vary as a function of the cutting head geometry, the effects of cutting head shape on stability were quantitatively investigated