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外文資料翻譯
學(xué)生姓名： 王士余
專業(yè)班級(jí)： 機(jī)制 0803
指導(dǎo)教師： 商德勇
河北工程大學(xué)機(jī)電學(xué)院
2012 年 6 月
據(jù)不完全統(tǒng)計(jì)，開采中被遺棄在地下的薄煤層煤炭資源達(dá)90 億t 以上。由于薄煤層地質(zhì)條件復(fù)雜，采煤工作面空間狹小，機(jī)械化程度低，投入產(chǎn)出比高，致使薄煤開采工藝技術(shù)發(fā)展緩慢。隨著計(jì)算機(jī)技術(shù)和自動(dòng)化技術(shù)的日益提高，煤礦綜采液壓支架電液控制系統(tǒng)得到不斷推廣應(yīng)用，大大提高了煤礦生產(chǎn)效率和自動(dòng)化程度，從而實(shí)現(xiàn)了薄煤層開采綜合機(jī)械化的新突破。根據(jù)峰峰集團(tuán)黃沙礦薄煤層地質(zhì)條件，河北天擇重型機(jī)械有限公司開發(fā)研制了電液控制薄煤層液壓支架ZY3300/07/13,采用pm32型電液控制系統(tǒng)，與薄煤層采煤機(jī)和刮板輸送機(jī)控制系統(tǒng)聯(lián)動(dòng)，由程序控制協(xié)調(diào)完成各工序，薄煤層工作面機(jī)械化程度大大提高。
1 薄煤層液壓支架ZY3300/07/13 電液控制系統(tǒng)的配置組成
（1）薄煤層液壓支架ZY3300/07/13 的結(jié)構(gòu)見圖1，支架型式是兩柱掩護(hù)式，工作阻力3 300 kN，高度0.7~1.3 m，中心距1.5 m, 采高0.9~1.2 m，主要由頂梁、掩護(hù)梁、前后連桿、底座、推移桿、立柱、平衡千斤頂、底調(diào)千斤頂、液壓系統(tǒng)等組成，支架控制系統(tǒng)采用pm32 型電液控制系統(tǒng)， 根據(jù)煤礦采煤工藝的要求，可靈活選擇多重控制方式，可選擇手動(dòng)單架控制，鄰架控制，成組程序控制，工作面運(yùn)輸巷內(nèi)主控制器全工作面可編程遙控。
圖1 支架結(jié)構(gòu)組成
（2）液壓支架電液控制系統(tǒng)的配置電液控制系統(tǒng)。單架控制系統(tǒng)以控制器為核心，主要由支架控制器、立柱壓力傳感器、推移千斤頂行程傳感器、電液換向閥組、紅外線檢測器（發(fā)射器安裝在采煤機(jī)）等組成
，
配置連接見圖2。通過連接器、耦合器等將每個(gè)支架的控制器互聯(lián)， 再配置雙路電源箱、總線提升器等組成一個(gè)計(jì)算機(jī)網(wǎng)絡(luò)，可實(shí)現(xiàn)多重控制方式。整個(gè)工作面的配置及連接見圖3。
圖2 單架控制系統(tǒng)
1.電液換向閥組2.推移千斤頂位移傳感器3.立柱壓力傳感器4.紅外線接收器5.電磁線圈驅(qū)動(dòng)器圖3 整個(gè)工作面的配置
1.支架控制器2.隔離耦合器3.雙路電源箱4.總線提升器5.網(wǎng)絡(luò)終
端器6.架間連接器7.電源－耦合器連接器8.耦合器－本架控制器連
接器9.耦合器－鄰架控制器連接器
2 電液控制系統(tǒng)控制過程
工作面內(nèi)各個(gè)支架控制器與主控制器連成一個(gè)計(jì)算機(jī)網(wǎng)，形成一個(gè)有機(jī)整體。主控器設(shè)在工作面運(yùn)輸巷內(nèi)指揮作業(yè)，它是全工作面電液控制系統(tǒng)的中樞，將接收到的工作面支架控制器信息和采煤機(jī)信息分析處理后反饋給支架控制器，支架控制器將根據(jù)主控臺(tái)反饋的信息、支架壓力傳感器和位置傳感器傳來的信號(hào)判斷處理后，對電磁閥發(fā)出控制信號(hào)，控制支架完成相應(yīng)的動(dòng)作，同時(shí)將支架信息反饋給主控器，主控器根據(jù)監(jiān)測到的信息，及時(shí)修改控制器運(yùn)行參數(shù)，協(xié)調(diào)采煤機(jī)與支架同步運(yùn)行。
3 電液控制系統(tǒng)的主要功能
（1）通過支架上安裝的壓力傳感器、行程傳感器、電液控制閥，實(shí)現(xiàn)液壓支架的自動(dòng)移架、自動(dòng)推移輸送機(jī)等單架（鄰架）非自動(dòng)控制，自動(dòng)順序聯(lián)動(dòng)，成組自動(dòng)控制，也可以對支架的單個(gè)功能控制。
（2）以采煤機(jī)位置為依據(jù)的支架自動(dòng)控制。采煤機(jī)上安裝的位置檢測裝置將檢測到的采煤機(jī)位置信息傳給系統(tǒng)，系統(tǒng)根據(jù)工作面的作業(yè)規(guī)程和采煤機(jī)位置的信息自動(dòng)發(fā)出命令指揮相應(yīng)的支架控制器控制支架自動(dòng)完成相應(yīng)的動(dòng)作指令。
（3） 支柱在工作中發(fā)生卸載時(shí)的自動(dòng)補(bǔ)壓功能。支柱在支撐中如因某種原因發(fā)生壓力降落，當(dāng)壓力降至某一設(shè)定值時(shí)， 系統(tǒng)會(huì)自動(dòng)執(zhí)行升柱，補(bǔ)壓到規(guī)定壓力，并可執(zhí)行多次，保證支護(hù)質(zhì)量。
（4）閉鎖及緊急停止功能。為安全目的不允許工作面某處支架動(dòng)作時(shí)，可操作支架控制器上的閉鎖鍵將本支架閉鎖，同時(shí)在軟件作用下還將左右鄰架也閉鎖，只有解鎖操作后才可恢復(fù)。當(dāng)工作面發(fā)生可能危及安全生產(chǎn)的緊急情況，需要立即停止或禁止支架的自動(dòng)動(dòng)作時(shí)，可按壓任意一個(gè)支架控制器上的緊急停止按鍵（與閉鎖鍵共用）， 全工作面支架自動(dòng)動(dòng)作立即停止并在急停解除前自動(dòng)控制功能被禁止。
（5）可設(shè)置主控計(jì)算機(jī)，在井下工作面巷道實(shí)現(xiàn)對工作面設(shè)備進(jìn)行監(jiān)控和控制，可實(shí)現(xiàn)跟機(jī)自動(dòng)控制或與其他設(shè)備的聯(lián)合控制，也可實(shí)現(xiàn)在地面對工作面設(shè)備的控制。
4 電液控制系統(tǒng)應(yīng)用到薄煤層液壓支架中的突出優(yōu)點(diǎn)
電液控制系統(tǒng)應(yīng)用到薄煤層液壓支架，實(shí)現(xiàn)了復(fù)雜地質(zhì)條件下薄煤開采綜合機(jī)械化的新突破，其優(yōu)點(diǎn)更為突出，使薄煤工作面的生產(chǎn)和管理發(fā)生了根本性的變化，經(jīng)濟(jì)效益顯著。
（1）大大提高了薄煤層綜采自動(dòng)化程度電液控制系統(tǒng)與采煤機(jī)和刮板輸送機(jī)的控制系統(tǒng)配合聯(lián)動(dòng)， 可實(shí)現(xiàn)薄煤層開采工作面的自動(dòng)化，煤礦薄煤層綜采自動(dòng)化程度大大提高。電液控制系統(tǒng)遠(yuǎn)程控制功能， 使井下無人工作面成為現(xiàn)實(shí)，較好地解決了薄煤層自動(dòng)化開采問題。
（2）可實(shí)現(xiàn)工作面的平直推進(jìn)。
移架步距準(zhǔn)確， 多架可同時(shí)推移刮板輸送機(jī)，采煤機(jī)截深準(zhǔn)確， 可以保持工作面輸送機(jī)的直線性，實(shí)現(xiàn)工作面的平直推進(jìn)。另外使輸送機(jī)緩慢彎曲，避免溜槽連接處產(chǎn)生過大應(yīng)力。
（3）顯著改善了工作面頂板的支護(hù)狀況，提高了安全生產(chǎn)系數(shù)
電液控制系統(tǒng)集監(jiān)測和控制于一體，能有效保證工作面液壓支架的初撐力，帶壓擦頂移架，有效防止前方片幫冒頂，利于保護(hù)頂板圍巖的穩(wěn)定。合理解決了液壓支架初撐力達(dá)不到額定阻力和帶壓移架問題， 為改善工作面頂板的維護(hù)提供有利條件，可減少頂板事故。另外操作人員可鄰架控制，遠(yuǎn)離工作面控制，故可避免沖擊地壓粉塵等礦井災(zāi)害的襲擾，保證人員的安全。
（4）降低了煤礦工人的勞動(dòng)強(qiáng)度，改善了工人的工作環(huán)境
在巷道內(nèi)操作就能完成工作面內(nèi)的破煤、裝煤和運(yùn)煤等各工序，使薄煤層工作面簡單化，減少和改善了薄煤層采煤工人在工作面內(nèi)爬行的工作狀況，安全有了可靠保障，極大地改善了工人的勞動(dòng)條件和勞動(dòng)環(huán)境，工人不再進(jìn)入工作面而是在巷道內(nèi)操作機(jī)器，降低了勞動(dòng)強(qiáng)度；工作面內(nèi)用人少，提高了人工工效；
（5）生產(chǎn)效率大大提高，提升了煤礦經(jīng)濟(jì)效益
在薄煤層工作面，原先受煤礦地質(zhì)條件和作業(yè)空間的限制，機(jī)械化程度低，生產(chǎn)效率低。采用電液控制系統(tǒng)后，由計(jì)算機(jī)合理安排采煤工序，取消了人工控制過程的輔助時(shí)間，移架速度快，同時(shí)可以對多個(gè)支架編組進(jìn)行控制操作，可實(shí)現(xiàn)跟機(jī)定量推溜和自動(dòng)移架，大幅度提高了采煤機(jī)械的利用率和生產(chǎn)效率，同時(shí)也給煤礦帶來了可觀的經(jīng)濟(jì)效益。
（6）電液控制方式靈活多樣，適用性強(qiáng)
煤礦可根據(jù)本礦的地質(zhì)條件和采煤工藝，靈活選擇多重控制方式來適應(yīng)地質(zhì)條件的變化，對于各種困難地質(zhì)條件和局部構(gòu)造適用性強(qiáng)，特別是對于薄煤層地質(zhì)條件和大傾角液壓支架，其優(yōu)點(diǎn)更為突出。
（7）提高了煤礦資源的利用率
過去產(chǎn)出效率低，一般薄煤層單產(chǎn)只是中厚煤層的1/3 或更少。掘進(jìn)率高，開采成本明顯高于中厚煤層，許多煤礦對薄煤層開采較少，甚至不考慮薄煤開采，隨著電液控制技術(shù)在液壓支架中的應(yīng)用，近年來薄煤層開采得到較快發(fā)展， 以前不愿或不能開采的薄煤層被開采，煤礦資源得到有效開采利用。
5 結(jié)語
ZY3300/07/13 液壓支架是峰峰集團(tuán)第1 套全工作面實(shí)現(xiàn)電液控制的薄煤層液壓支架。采用電液控制系統(tǒng)有效地解決了復(fù)雜條件下薄煤層高產(chǎn)高效開采的技術(shù)問題，大大提高了薄煤層開采的機(jī)械化程度。將電液控制系統(tǒng)應(yīng)用在薄煤層支架中，其優(yōu)點(diǎn)更為突出。目前，ZY3300/07/13 液壓支架正在峰峰集團(tuán)黃沙礦使用，其帶來的經(jīng)濟(jì)效益明顯高于峰峰集團(tuán)小屯礦和大樹村礦使用的手動(dòng)控制薄煤層液壓支架帶來的經(jīng)濟(jì)效益，電液控制薄煤層液壓支架推廣應(yīng)用前景廣闊。
According to incomplete statistics, abandoned underground mining of thin coal seams
T of coal resources of 9.0 billion or more. Complex geological conditions of the thin coal seam
Complex, coal face space is small, low level of mechanization, input-output
Ratio, resulting in thin coal mining technology development is slow. As computing
Machine technology and the increasing automation, coal mines of hydraulic support
Electro-hydraulic control system aircraft to continuously promote the use, greatly improving the coal
Mine production efficiency and automation in order to achieve a thin seam mining
Breakthrough mechanized. According to sand mining thin seams Fengfeng Group
Geological conditions, selection Heavy Machinery Co., Ltd. Hebei, developed a
Electro-hydraulic control of thin coal hydraulic support ZY3300/07/13, by pm32
Electric hydraulic control system, and the thin seam coal mining and conveyor control
Linkage system of systems, control and coordination by the program to complete the process, thin seam
Face greatly increased the degree of mechanization.
A thin seam of hydraulic support ZY3300/07/13 electro-hydraulic control system
Configuration composed of
(1) thin seam structure of hydraulic support ZY3300/07/13 see
Figure 1, the bracket are two types of the covering, working resistance 3 300 kN,
Height of 0.7 ~ 1.3 m, center distance of 1.5 m, mining height 0.9 ~ 1.2 m, mainly
From the top beam, covering beams, before and after the connecting rod, base, bed bar, column, flat
Balanced jack, tune the bottom jack, hydraulic system, etc., support the control
Pm32-type system uses electro-hydraulic control system, according to coal mining workers
Arts requirements, the flexibility to select multiple control modes, manual
Single-frame control, frame control neighborhood, group process control, transportation Lane Face
Full-face within the programmable remote master controller.
(2) electro-hydraulic control system of hydraulic support the configuration of electro-hydraulic control
System. Single frame controller as the core control system, mainly by the bracket
Controller, column pressure sensors, sensor trip over jack,
Electro-hydraulic valve group, the infrared detector (transmitter installed in the coal mining
Machine) etc.
Configuration is shown in Figure 2. Through the connector, coupler
Interconnect controller for each bracket, and then configure the dual power supply box, the total
Line enhancer composed of a computer network, can achieve multiple control
Way. The configuration of the entire face and is shown in Figure 3.
Figure 2 Single-frame control system
1. Electro-hydraulic valve group 2. Goes jack displacement sensor 3. Column pressure sensor
Device 4. IR receiver 5. Electromagnetic coil driver
Figure 3, the configuration of the entire face
1. Stent controller 2. Isolation coupler 3. Dual Power Box 4. Bus riser 5. Network termination
Terminal device 6. Frame between the connector 7. Power - Coupler connector 8. Couplers - with the frame controller
Connector 9. Couplers - o shelf controller connector
2 electro-hydraulic control system control process
Face of each bracket within the controller and the host controller into a connected
A computer network to form an organic whole. In the work of master
Surface transportation lane command operations, it is the whole face electro-hydraulic control system
The center, will receive the controller information and mining working face
Information analysis and processing machine back to the stand after the controller, the controller bracket
Feedback information according to the console, bracket and location of pressure sensors
Determine the sensor signal processing came after the issue of control of the solenoid valve
Signal, control bracket to complete the appropriate action, while the bracket information
Feedback to the master, master the information to the monitoring and timely repair
Change the controller operating parameters, coordination and support synchronous operation Shearer.
3 electro-hydraulic control system functions
(1) through the bracket installed on the pressure sensor, travel sensor
Devices, electro-hydraulic control valve, the automatic transfer of hydraulic support frame, automatically push
Moving conveyor, such as single frame (o-planes) of non-automatic control, automatic sequence associated
Move into a group of automatic control, can also support a single function control.
(2) shearer location-based support automation. Mining
Installed on coal-position detection device will detect the position of Shearer
Home information to the system, the system operating under the rules and mining face
Coal location information automatically support an order commanding the corresponding control
Control bracket system automatically orders the appropriate action.
(3) pillars of the work occurring in the auto-fill pressure unloading function
Energy. As a result of the support pillars in the pressure drop occurs for some reason, when
When the pressure down to a set value, the system will automatically lift column, make
Pressure to the required pressure, and can perform multiple, supporting quality assurance.
(4) Locking and emergency stop functions. Not allowed for security purposes
Face somewhere bracket action, the operational support of the closure on the controller
Lock key to lock the bracket, while the software will be left under the action of o
Frame is also closed, and only unlock after restore operation.
When the face that may endanger the safety of emergency situations,
Need to immediately stop or disable the automatic action stent can press any
A bracket means the emergency stop button on the controller (with latch key Total
Use), all working face automatic action to immediately stop and emergency stop solution
In addition to automatic control functions are disabled before.
(5) can be set to the host computer, implemented in the underground tunnel face
Is on the face equipment monitoring and control can be realized with the automatic
Control or joint control with other equipment can also be realized in the face
Face control.
4 electro-hydraulic control system applied to the thin seam of the outstanding merits of hydraulic support
Electro-hydraulic control system applied to the thin coal hydraulic support to achieve
Thin under complicated geological conditions of the new breakthroughs in mechanized coal mining, its
Advantage is more prominent, so thin coal face of production and management have taken place
Fundamental changes, significant economic benefits.
(1) greatly increased the degree of automation Thin Seam Mining
Electro-hydraulic control system and shearer and conveyor control
With the linkage system can achieve automatic thin coal seam face
Technology, coal Thin Seam Mining greatly increased degree of automation. Electro-hydraulic control
Remote control system of the system, so that no one face into mine now
Fact, solved the problem of thin seam mining automation.
(2) can achieve straight face forward.
Frame accurate step move, multi-rack conveyor over the same time,
Shearer deep and accurate, can keep a straight face conveyor
, To achieve face straight forward. In addition to the slow curve conveyor
Music, to avoid generating too large chute connection stress.
(3) significantly improved the status of the supporting roof and improve
The safety factor
Electro-hydraulic control system set to monitor and control in one, can effectively protect
Card Face the setting load of hydraulic support, frame shift with pressure rub the top of the effective
To prevent the front of the slide and roof fall, which will help protect the roof rock of stability. Co
Management to solve the hydraulic support force of less than the rated resistance and with pressure
Moving frame issues, to improve the maintenance of roof to provide favorable conditions
Parts, can reduce the roof accident. In addition the operator can control the adjacent shelf, far
Control away from the face, it can avoid the burst of dust and other mine disasters
The harassment and ensure staff safety.
(4) reduce the labor intensity of the mine workers and improve working conditions for workers
Operation can be done in the tunnel face in the breaking of coal, coal loading
And coal and other processes, so that a thin seam simplification, reduction and
Improved thin seam coal mining workers in the face like the work within the crawl
Conditions, a reliable security guarantee, which greatly improved the labor
Conditions and working environment, workers no longer enter the face but in the roadway
The operation of machinery, reducing the labor intensity; face in employing less, provided
Artificial high efficiency;
(5), greatly improving production efficiency, improve economic efficiency of coal mine
In thin seam, the original work by the geological conditions and coal mines
Space constraints, the low degree of mechanization, low production efficiency. Using electro-hydraulic
Control system, reasonable arrangements for coal mining operations by the computer, eliminating
Auxiliary manual control process time frame moving fast, and can
Grouping of multiple stents to control operation can be realized with the machine to push the quantitative
Slip and automatic shifting planes, substantially increased the utilization of coal mining machinery and
Production efficiency, but also to mine brought considerable economic benefits.
(6) flexible electro-hydraulic control, applicability
Coal mines in accordance with the geological conditions and mining technology, flexible
Multiple control options to adapt to changes in geological conditions, for all
Kinds of difficult geological conditions and local structures in application, especially for
Geological conditions and thin coal seam inclined hydraulic support, and its advantages more sudden
Out.
(7) increased utilization of coal resources
Over the past output efficiency is low, generally yield only a thin seam of coal in the thick
Layer 1 / 3 or less. Tunneling rate, mining costs are significantly higher than in the thick
Coal, many coal mines on the thin coal seam less, even without considering the thin coal
Mining, with electro-hydraulic control technology in the application of hydraulic supports in recent years
To be rapid development of thin coal seam, mining previously unwilling or unable to
Thin coal seam is mined, the effective exploitation of coal resources.
5 Conclusion
ZY3300/07/13 peak hydraulic support is the whole set of working group 1
Electro-hydraulic control for the surface to achieve the thin seam hydraulic support. Using electro-hydraulic control
System to effectively solve the complex system under the condition of high efficiency thin coal seam
Exploitation of technical problems, greatly improving the mechanization of thin seam mining
Level. Electro-hydraulic control system will be applied in thin seam support, its excellent
Point more prominent. Currently, ZY3300/07/13 hydraulic support is the peak
Sand mining use Feng Group, which was significantly higher than the peak of the economic benefits
Peak Group Xiaotun mining and tree mining village of thin coal seams using manual control
Economic benefits of hydraulic supports, electro-hydraulic control of the hydraulic support Thin Seam
Frame application prospect.
河北工程大學(xué)畢業(yè)設(shè)計(jì)
The hydraulic pressure support development with first gazes
[ Key words ] hydraulic pressure support; Control; Intellectualization
1 hydraulic pressure supports development
The hydraulic pressure support is take the high-pressured liquid as a power, by certain hydraulic pressure part (cylinder, pipe accessory) one kind of strut and the control roof mining coal working surface equipment which becomes with some steel work combinations. Has the intensity high, the travelling speed quick, support the performance good, safe is reliable and so on the characteristic. Since the 20th century 50's, the hydraulic pressure support has gradually become the mining coal working surface core equipment, in the world mainly produced the coal country to invest the massive manpower physical resource and the financial resource carries on the research development to it. At present, support tends to take the hydraulic pressure support as the main body maturely, in the world has produced makes several hundred kind of frames and the up to ten thousand kind of models hydraulic pressure support, meets each kind of coal bed mining support need. On the century 60's, our country once has also developed 10 kind of hydraulic pressure supports, because all sorts of reasons have not obtained the promoted application, the hydraulic pressure support is in the development, the experimental stage; The 70's successively from England, Germany, Poland, former Soviet Union and so on mainly produce the coal country to introduce several 10 sets of hydraulic pressure supports. After the unceasing exploration, the use, the digestion and the summary, make each kind of type the support, it is the beginning which the domestically produced hydraulic pressure support develops; The 80's hydraulic pressure support research and development is in the innovation to enhance the stage, develops 30 kind of new frames one after another, makes the ZZ series, the XY series, the ZD series and so on the different specification, and widely uses in the state-owned large and middle scale coal mines, obtains the good economic efficiency; 90's special hydraulic pressure support development obtains the rapid development, the mechanized shop net support, the water granulated substance fills the support, the reason support, the force support, puts goes against the coal support and so on to be published one after another; This century along with the computer technology, the automated technology popularization and the application, the hydraulic pressure support control obtains unprecedentedness to progress, gradually to the procedure control, the numerical control, the remote control and the automated control makes great strides forward.
2 domestic and foreign hydraulic pressure supports difference
The domestically produced support in the manufacture technology, the material quality performance, the processing craft, the control system and in the sealing property compares with the overseas advanced countries has the very big disparity.
2.1 processings manufactures aspect
According to the related synthesis picks the engineers and technicians to reflect that, the domestically produced hydraulic pressure support craft technology, the service life, the operational performance, use the material quality so far not yet to achieve in 1979 introduced 100 sets of supports the technical levels. If structural material: Germany uses the ST52 material it yield strength is 500 MPa, but our country uses 16 Mn material yield strength is only 350 MPa; Valve class: Overseas always uses the copper alloy valve shell and the high strength stainless steel valve core, our country is the 45# steel adds surface heat processing; In processing craft: The overseas cylinder endophragm is duplicate plates, the domestic product for does not plate, causes the column premature to appear the spot in the use process, scratches and so on the seal leaks the fluid phenomenon, affects support the effect. The domestically produced hydraulic pressure support and the overseas production hydraulic pressure support compares the average to reduce 2 ~ 3 a service life.
2.2 control systems aspect
The domestically produced hydraulic pressure support control system research and development is at backwardness condition, seriously restricted the support to move supposes the speed the enhancement and the synthesis picks the economic efficiency the display. In the world several mainly produce the coal great nation throughout to enhance the support control system achievement the synthesis to pick the economic efficiency the important method, the 20th century 60's use manually straight control the operating system; The 70's use the forerunner control system, along with it England first proposed the development electrohydraulic control system, the eighty's tends to maturely; The 90's ladders company develops the entire working surface electrohydraulic control system, follows closely after that Wister to cut down the advantage Asia - shell Switzerland special company to develop more advanced P - M3, P - the M4 electrohydraulic control system. Presently country and so on US, Germany, England, Australia basically all is the programmable electrohydraulic control, but our country still used the hand control system.
2.3 hydraulic pressure parts aspect
The hydraulic pressure part research and development speed lags by far to the hydraulic pressure support need to develop. The hydraulic pressure support reliability mainly relies on the hydraulic pressure part reliability, the hydraulic pressure support in the coal mine production applies whether succeeds, the key lies in the hydraulic pressure part the technical performance whether does meet the requirements. Overseas at present uses the great current capacity safety valve, the fluid much controls the cone-way valve, the cut-off valve, initially supports the strength maintenance valve and the column quickly returns at once the fluid valve. To the hydraulic pressure part structural style, the geometry size, the choice of material, the heat treatment method and the surface treatment and so on various aspects have conducted the thorough research and the development. Develops one batch of sealing property well, the sensitivity high, enters the row of fluid ability to be big, the anti- impact load strong each kind of hydraulic pressure part, adapts the hydraulic pressure support operating performance request. But our country kind of hydraulic pressure part research and development lags regarding this, at present still continued to use the century for 80's the product, has not formed the hydraulic pressure part universalization, the seriation, the standardization
3 hydraulic pressure supports prospects for development forecast
In view of the fact that the science and technology high speed development, new technical, the new craft, the new method, the new material unceasing application and the computer technology unprecedented expansion, the hydraulic pressure support future development will have the extremely attractive prospect.
3.1 designs ideas renewal, the hydraulic pressure support develops a revolution
Must consider the environment in the hydraulic pressure support design the attribute. Because the hydraulic pressure support working condition is bad, the person, machine the environment reciprocity question appears importantly. The green design is the choice of material, the product structure, the technique, the outward appearance modelling and the color matches according to the certain rule, adopts artistic the method to perform ingeniously to fuse, fully manifests the man-machine environment system the harmonious unification. The unwieldy hydraulic pressure support image safe, reliable, is been easy to service, lowly to consume energy, the high efficiency, the modelling artistic substitutes. This kind of green design, it not only Filters the environment and the resources both must meet the economical development needs, and must meet the human survival development needs, is the humanity sustainable developmental strategy in support design manifesting. For example: The hydraulic pressure support uses the multi- goals fuzzy design in the design process, requests to support the strength in a big way, moves a speed quickly, weight light, the timber wood are few and so on, each goal determined a function, namely many designs objective function, then the combination optimizes, determination preferred plan.
3.2 will adopt the pure water hydraulic pressure technology, the hydraulic pressure support becomes the green machinery
The pure water hydraulic pressure technology is the hydraulic pressure domain development front. It not only has good anti- burns the nature, the radiation, moreover the price also cheaply, does not have the pollution, since the long-time hydraulic pressure support in Surface under has worked, because the use actuating medium is the emulsion, and has many chemical additives (emulsifier, guards against rust medicinal preparation, antiseptic, partner mixture and so on), the micro environmental pollution is extremely serious to the surface below, therefore, the hydraulic pressure support use pure water hydraulic pressure technology, to reduces the coal mine the production cost, protects the environment is beneficial, and may greatly improve the mine pit the work and the security condition. Unceasingly progresses along with the society, the people had a higher request to the dependent survival environment, hoped has a security, the environmental protection, the highly civilized green environment. The time request summoned the hydraulic pressure transmission (to origin in 1605 discovered the Pascal's law) this ancient brand-new technology resurfaced, and received the world the attention. At present, the western nation concentrates the strength to study this technology, and makes the unprecedented progress. For example: The lubrication attrition question, reasonably selects rubs the vice- material, has the engineering plastics, the structure ceramics, the high polymer material, guards against rust anticorrosion coating and so on. The structure ceramics have the resistance to wear, the anti- cavitation performance is good, the good chemical stability, characteristic and so on lower friction factor, prepares is favoured. Replaces the partial metals material in the hydraulic pressure part with the structure ceramics, big improvement its performance. In brief, the new material success develops and applies, precisely processes technical the unceasing progress, as well as each kind of new structure hydraulic pressure part making, all will become the hydraulic pressure support to use the pure water hydraulic pressure technology to enter the strict non- pollution domain, will provide the extremely attractive application prospects for development.
3.3 high tech applications, the hydraulic pressure support tends to the intellectualization
The advanced science and technology application is mutually seeps each kind of technology, mutually unifies in the foundation mutually assists, mutually promotes and the enhancement, fully uses each kind of related technical the superiority, enhances strong points and avoid weaknesses, after causes the combination the overall function to be bigger than the composition whole sum of each part of function comprehensive interdisciplinary studies.. The many kinds of technologies unceasingly seep to "the mechanical parent substance - hydraulic pressure support", including technical and so on machine, electricity, fluid, light, magnetism servosystem. Specifically said that, is the strength, the speed which outputs by the hydraulic pressure support are a goal, constituted from has output to the input closed-loop system, was involves sensing the technology, the computer control technology, the signal processing technology, the mechanical drive technology, the hydraulic transmission technology and so on. Because fast operating speed, formidable memory function and keen logical judgement function, thus has realized the man-machine dialogue, causes it operation maintenance conveniently, the entire machine function to be strong. The hydraulic pressure support application function unceasingly expands, unceasingly strengthens to the mine pit coal bed geology condition compatibility, production benefit to equipment dependent degree increasingly big, the operational reliability is more important. The breakdown diagnosis technology (including signal examination, breakdown judgement, failure detection, content and so on fault analysis) along with the high tech development theory (for example wavelet technology, nerve network, artificial intelligence and so on) will enter the hydraulic pressure support the early diagnosis, the prevention and the reduced accident occurrence, service blindness and the maintenance time, will lengthen the support service life, will enhance the production efficiency.
4 concluding remark
In summary, the hydraulic pressure support at present develops the main tendency is: Two columns shields type, enhances the hydraulic pressure support intensity, the design factor, moves a speed, the improvement individual part structure (overall top-beam, width center distance and so on), hydraulic pressure pipe accessory seriation, standardization, universalization, high working resistance, redundant reliability, with micro electron technology realization machine electrohydraulic integration digital gathering, operating mode monitor, breakdown diagnosis and automatic control.
Hydraulic pressure support battery solution control engineering research and application
[Key words] Hydraulic pressure support;Battery solution control system;Design application
A coal mining technology significant innovation. At present,The battery solution control technology in synthesis and so on US, Germany picked the technical leading country to obtain the widespread application,But our country then only then gradually the necessary use battery solution controls the technology in recent years on some hydraulic pressure supports
1 battery solution control technology basic principle and main composition
1.1 Battery solution control technology basic principle
（1） Bidirectional neighbour control system.
The synthesis picks working surface each support has the frame to control the box,The operator controls the box choice neighbour control mode through the support frame,Then sends out the corresponding control command according to the instruction (to produce electrical signal),Causes electro-magnet or micro electrical machinery movement which on neighbour corresponds,Let the electrical signal transform as the hydraulic pressure signal,Controls the host to control the valve to open,Supplies the fluid to the support hydraulic cylinder,Realization neighbour support corresponding movement. The support working mode active status feeds back the frame by the position transmitter and the pressure transmitter to control the box,The frame controls the box to decide the support again according to the sensor feedback signal the next movement.
（2）Bidirectional becomes the group control system.
Arranges the working surface support is certain groups,In on this group of in first frames presses the frame by the operator to control the box the start key,Sends out an instruction,Neighbour presses the pre-set sequence movement,After moves the frame to complete automatically sends out the control signal to control the box for next,Next starts the movement. Infer from this,In realization group support automatic control.
（3）Entire working surface automatic control system.
The function consummates battery solution.The control system is equipped with the main control console, the infrared installment,Can realize the support and the coal mining machine linkage entire working surface automation control. Its principle is:On each support frame controls the box with the main control console networking,When the support infrared receiving device receives the position which the coal mining machine infrared launcher sends out to believe.After number,The feedback gives the main control console,The main control console sends out the instruction according to the feedback signal,Causes the corresponding support movement.
1.2 Main constituent
（1）Battery solution controller (SCU).
The battery solution controller is a control system department.Series "heart",It by microprocessor, the intelligence transmission unit, operates the keyboard and the data receiving device and so on is composed. The battery solution controller has two aspects the functions:On the one hand is defers to the operational order and the pre-set sequence completes the solenoid valve group to open shuts,Then control support column, hoisting jack movement;On the other hand it receives the condition data which on the support obtains (including pressure, displacement and so on) and performs to analyze the judgment,Then controls the support the movement,And demonstrates the support state variable and the support breakdown.
（2）Battery solution control valve group (FZ).
The control valve group is one kind of multipurpose control hydraulic pressure solenoid valve,May replace the fluid cycle selector valve,This kind of valve assembly has causes the support movement the valve group and the surveillance support working condition pressure switch,Opens or the closed valve passage according to the controller instruction.
（3）Central control bench (MCU).
Whether the system does use MCU,Must the working surface automated horizontal height which determined according to the user decide. Only installs the battery solution controller,Even does not need to install the ground master control room (MCU1) and the mine shaft control room (MCU2),Also may realize the entire automation. The lowest level control system is a bidirectional neighbour unicontrol,What at present is commonly used is "as soon as controls four" the system,Then expands to the automatic arrangement, becomes the group to control, to become the group to pass and the combination function and so on,These all do not need the central control bench.
（4）Periphery accessory.
The battery solution control system has can survey Condition, And transforms the hydraulic pressure parameter into the electronic signal original part pressure transmitter,The reflection passes the hoisting jack travelling schedule position contact sensor as well as uses for automatically to start the coal mining machine long-distance control hydraulic pressure support battery solution controller the infrared receiver and so on. All sensors all have respective output signal,Thus may discover the position which the line severs,And is distinguished by each support battery solution controller. If the system matches in the mine shaft working surface or the ground control room
Has the central control bench,Has the breakdown cable line or the sensor can demonstrate on the key station screen,Like this very easy definite breakdown position battery solution control flow like chart 1 shows
2 battery solutions control the support the merit
Below this support and the hand control system compare has the merit
（1） The support travelling speed is quick.
At present the domestic hydraulic pressure support is common.Uses the hand control,It passes the speed besides to receive the system current capacity and the hydraulic pressure part has flowed the ability the limit,The worker also has the direct influence in the bay travelling speed to it,This kind of influence appears the outstandingly in the thin coal bed. The battery solution control support work process may automatically circulate carries on,Sped up moved a speed form eight to ten mintenuse,This speed can follow form13113 to 1315m/Min coal mining machine speed,Shan Taibeng current capacity 400 L/Min,Needs 2 to pump the simultaneous working. Satisfied the high effi