DW型矿用外注式单体液压支柱The DW outer-injected individual hydraulic prop in mining使用说明书The instruction book推行标准：MT112—93The operating standard : MT112—93徐州矿务集团机械厂The Machine Making Factory of Xuzhou MiningCompany Group（徐州华东机械厂）(Xuzhou Machine Making Factory in East China)前言PrefaceDW型矿用外注式单体液压支柱，系煤炭工业部煤炭科学研究院设计，由我厂制造的煤矿支护产品。
The DW outer-injected individual hydraulic prop in mining, which is designed by Coal Academy of Sciences in Ministry of Coal Industry, is the coal mine support product manufactured by our factory.我厂生产的DW型支柱系列，现有三种型式16种高度不同的规格，分别适用于0.55～3.5米的煤层厚度。
DW prop series produced by our factory have 3 types and 16 kinds of different specification, which are applicable to 0.55～3.5m thickness of coal seam一、用途ApplicationDW型支柱是一种外部供液的恒阻式单体液压支柱，它可与金属铰接顶梁配套使用，也可单独作点柱用，供煤矿一般机械化工作面支护顶板，或供综合机械化采煤工作面作端头支护及其它临时性支护。
DW prop is a constant resistance individual hydraulic prop of outer feed flow, which can be used with metal hinge joint top beam or can be used as an individual pillar. It can provide coal mine a general mechanized face timbering roof or provide coal mine a comprehensive mechanized face as termination point supporting and other temporary supporting.二、适用范围Applicable scopeDW型支柱适用于下列煤层条件：DW prop is applicable to the following coal seam conditions.（一）煤层倾角小于25°的缓倾斜回采工作面；如采取一定的安全措施，使用范围可扩大到倾角25°～35°的倾斜回采工作面。
The coal bed pitch is less than 25°low pitch coal face :if takecertain safety steps, the application scope can be expanded to25°～35°low pitch coal face.（二）本支柱系列现有16种规格，分别适用于采高为0.55～3.5米的煤层。
This prop series have 16 kinds of specification, which is applicableto 0.55～3.5coal bed respectively.（三）煤层顶、底板条件：The conditions of coal seam roof and floor1. 工作阻力为250KN的支柱，底板抗压入强度应为20Mpa以上工作阻力为300KN的支柱，底板抗压入强度应为28Mpa以上。
如底板较软，支柱压入底板的深度以不恶化顶板的完整性及不影响支柱的回收为限。
否则，应采取“穿鞋”或加大底座等措施 .The prop of working resistance for 250KN, the floor compressivestrength should be above 20Mpa. The prop of working resistance for300KN, the floor compressive strength should be above 28Mpa. If the floor is a bit soft, the depth of prop pressing into floor should be within the limits of the completeness of the roof and the recycle of the prop.Otherwise, you should adopt the measures of “put on your shoes” orincrease the floor.2. 顶板冒落情况较好，冒落后不影响支柱的回收。
If t he inbreak condition of roof is good, it doesn’t influence the recycle of the prop after the inbreak.3. 在特殊情况下(人工假顶工作面或地质构造较复杂的条件等)使用时，应采取安全措施。
When used under special conditions (artificial false roof working face or the more intricate geological structure), you should take some safetymeasures.4. 在煤质较松软的炮采工作面使用时，应对活柱体镀铬面采取保护措施以防崩坏，且不能当贴帮柱用。
When used in softer coal quality scoop and blast working face, youshould take some protective measures to protect mobile column in case of molder, and you should not use it as paste prop.5. 支柱与木顶梁配合或作点柱使用时，应将顶盖换成柱帽，以免损坏木梁，造成回柱困难。
When the prop coordinates with timber cap or when used as pillar, you should change capping into column cap in case of damaging the wooden beam, this will make prop pulling difficult.(四) 本支柱不宜在下列条件的工作面使用：This prop is inapplicable in the working face of the following condition. 1.煤质较硬的炮采工作面，以及周期来压特别强烈或有冲击地压的工作面。
The harder coal quality scoop and blast working face and the working face of pressing down periodically or the working face of rocking bust.2.工作面采高太低（支柱选型不合适），不能保证顶板下沉后支柱安全回收所需的最小高度。
The mining height of working face is too low (the prop type selection is unsuitable), therefore, it can not guarantee the minimum height of safely recycling the prop after roof convergence.3.不同工作特性或不同工作阻力的支柱，均不能与本支柱混合使用。
The different performance characteristics’ prop or the different working resistance’ prop can not mixed-use with this prop.4. 可用于有周期来压工作面,有显著冲击地压的一般不宜使用.It can be used to the working face of periodically pressing down. And it can not be used to the working face of notably rocking bust.三、技术特征The Technical CharacteristicsDW型支柱系列规格及主要技术特征见下表。
DW prop series specification and the main technical characteristic see the following form.DW型支柱几种型式的顶盖和底座见图一。
按照标准，DW 型支柱配a 顶盖和d底座；DW28-250/100J ～DW35-200/100J型支柱配铰接顶盖和焊接底座。
也可根据用户的特殊需要，供给其它的铰接顶盖及平底座、底座。
需要者在订货合同上注明。
The DW prop’ several type of capping and base see figure one. According t o the standard, DW prop matches a capping and b base: DW28-250/100J ～DW35-200/100J prop matches the hinge joint capping and wielding base. According to the user’ special need, you also can provide the other hinge joint capping and flat base, base. The needy should give a clear indication in the ordering contract.四、结构及工作原理支柱由顶盖、三用阀、活柱体、复位弹簧、手把体、油缸、活塞、底座体等主要零部件组成（DW06-300/100～DW25-250/100型见图二a,DW28-250/100J(A) 型见图二b,DW28-250/100J --DW35-200/100J型见图二c,）The prop is made up of capping, Triple Duty Valves, mobile pillar, offsetting spring, handlebar, hydro cylinder, piston, underseat structure and soon.( DW06-300/100～DW25-250/100 see figure two, a, DW28-250/100J(A) see figure two, b,DW28-250/100J --DW35-200/100J see figure two)图二(a) DW型单体液压支柱结构图Figure 2(a) the structure drawing of the DW individual hydraulic prop图二(b) DW28-250/100J(A)单体液压支柱结构图Figure 2(a) the structure drawing of the DW28-250/100J(A) individual hydraulic prop图二(c) DW28-250/100J --DW35-200/100J单体液压支柱结构图Figure 2(a) the structure drawing of the DW28-250/100J(A)- DW35-200/100J individual hydraulic prop（一）顶盖capping顶盖是直接和顶梁接触的受载零件，它通过三只弹性圆柱销和活柱体相连接。