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  • US4822105A - Double ended ranging drum shearer and method ...

    A double ended ranging drum shearer is provided with a shearer body and a pair of drums disposed at front and rear end portions of the shearer body to be movable up- and down-wardly. The shearer is further equipped with detectors for respectively detecting the travelling position of the shearer body, detecting the inclination of the shearer body at the travelled position, and detecting the ...

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  • Shearer Loader SL 1000 Eickhoff

    A class of its own: Equipped with a total installed power of 2,800 kW, the Eickhoff SL 1000 is specifically designed to achieve peak production rates at seam thicknesses of up to 8.6 m. But also customers with seams as thin as 3.0 m can profit from the modular design of the SL 1000 given that the machine with its exceptional cutting power can be installed in thinner seams as well by just ...

  • Joy Longwall Shearers - Underground Mining Komatsu ...

    Lumpbreakers, with installed power up to 270 kW, provide a rotating drum on the tailgate end of the shearer to break up any material that may not pass beneath the shearer. Cowls. The fitment of cowls to the ranging arms maximizes the shearer’s ability to load cut material onto the AFC.

  • Cutting Machines - Shearers Introduction underground COAL

    The double ended ranging drum arrangement also allows smaller drums to be fitted while still cutting the required height, either cutting part of the seam with each drum in one pass or as two separate passes. The ranging arms allow much easier grading or changes in cutting height where required.

  • Longwall Shearers Selection Guide Engineering360

    The shearer loader can be divided into three basic types. Double-ended ranging drum shearers (DERS) are the largest and most efficient type of shearer loader. The double-ended machine includes two cutting drums mounted on ranging arms that can be positioned to accommodate a range of seam thicknesses.

  • Double ended ranging drum shearer and method of ...

    Apr 18, 1989  A double ended ranging drum shearer is provided with a shearer body and a pair of drums disposed at front and rear end portions of the shearer body to be movable up- and down-wardly. The shearer is further equipped with detectors for respectively detecting the travelling position of the shearer body, detecting the inclination of the shearer ...

  • Marcus Shearer Drummer, Guildford (2020)

    🐾🐾A huge thank you to our local Drummer Markus Shearer and Bruce for another donation for the Wonky Dogs. Markus is providing live streams and skype drum lessons during the Covid 19 Lockdown so if you or the children are interested in music well worth a visit over to his page! 🐾🐾 ... ACM Birmingham students can now access 'Rubber ...

  • Improved Shearer-Clearer System for Double-Drum Shearers ...

    IMPROVED SHEARER.CLEARER SYSTEM FOR DOUBLE.DRUM SHEARERS ON LONGWALL FACES By Natesa I. Jayaraman, 1 Robert A. Jankowski, 2 and Fred N. Kisse 11 3 ABSTRACT This report describes recent improvements the Bureau of Mines made in the design of its shearer-clearer water-spray system for dust control on lonwgall shearer faces.

  • Shortwall Dual Drum Shearer - heliusx

    Product Feature *SWS300-NW shearer is hydraulic haulage shortwall dual drum shearer with single motor horizontal layout. The total installed power is 300kW, it can be matched with single prop, articulated roof beam and suspension movable support, and it can be used in shortwall fully mechanized mining and fully mechanized caving face.

  • Apparatus on drum shearer for cutting through safety wall ...

    May 12, 1981  This coal mining machine is called a double ranging drum shearer, but is different from the conventional ones in that the arms 2, each of which holds a shearing drum 1 and through which driving force is transmitted to the shearing drums 1, are provided with shearing blades 2a.

  • NIOSHTIC-2 Publications Search - 10004555 - Improved ...

    Improved Shearer-clearer System for Double-drum Shearers on Longwall Faces. Authors Jayaraman-NI; Jankowski-RA; Kissell-FN Source MISSING :11 pages Link NIOSHTIC No. 10004555 ...

  • Longwall Shearers

    located in the shearer mainframe and does not form part of the shearer structure. The haulage system offers: • Simple construction, improved reliability and longer service life • Fully proven load-sharing system • Reduced cost Coalsizer Cat shearers can be supplied with an optional rugged coalsizer, currently with up to 200 kW (320 hp) of

  • Design Development of Longwall Shearers for Overseas ...

    A further six systems have since been installed at other collieries in the U.K. A major step in the development of automatic vertical guidance and health monitoring for the AM500 will be the installation of an AM500 double ended ranging drum shearer (DERDS) on S81's face at

  • Improved shearer-clearer system for double-drum shearers ...

    Improved shearer-clearer system for double-drum shearers on longwall faces. Pittsburgh, Pa. : U.S. Dept. of the Interior, Bureau of Mines, 1985 (OCoLC)609317449

  • Shearer Loader SL 900 Eickhoff

    The next leap in evolution: With the new SL 900 shearer loader, Eickhoff increases the production rates up to the absolute maximum. This high-performance mining machine combines the compact dimensions of the SL 750 with the staggering power of the SL 1000.Thanks to the implementation of state-of-the-art design and production techniques, a machine with impressive properties could be developed ...

  • Research on Error Compensation Property of Strapdown ...

    May 10, 2016  The strapdown inertial navigation system (SINS) can be installed on a shearer and used for monitoring its position. However, under the complex environment ... the dynamic model of a double-drum shearer is built with a force analysis, and the spectrum characteristics of linear vibration and angular vibration for the fuselage are then obtained. ...

  • Cutter-loader apparatus having overhung shearer drum ...

    The average exposure of the jacksetter was 3.4, 2.0, and 2.4 mg/m/sup 3/ of air for plow, single and double drum shearer operations. The 1978 study showed average occupational exposures on plow and single-drum shearer operations to be below 2.0 mg/m/sup 3/ of air; however, the average high-risk occupational exposure still exceeded the standard.

  • Longwall Shearer Performance Using Water-Jet-Assisted Cutting

    crete. The shearer motor energy is used as a measure of shearer cutting efficien­ cy. Therefore, lowering the shearer mo­ tor energy will result in a more effi­ cient cutting operation. One objective of this study was to determine, by mea­ suring shearer motor energy, if the cut­ ting efficiency of the machine was

  • Double-Ended Ranging Drum Shearer - How is Double-Ended ...

    DERDS - Double-Ended Ranging Drum Shearer. Looking for abbreviations of DERDS? It is Double-Ended Ranging Drum Shearer. Double-Ended Ranging Drum Shearer listed as DERDS. Double-Ended Ranging Drum Shearer - How is Double-Ended Ranging Drum Shearer abbreviated?

  • Drum Lessons with John Shearer

    Understanding, and executing all Drum Rudiments around the kit; Double B/Drums or double pedal. Independence and how to achieve this "must have" for drummers; All types of music catered for; Odd time signatures a speciality, as my work with Ex Genesis guitarist "Steve Hackett" depended on understanding these.

  • NIOSHTIC-2 Publications Search - 10006107 - Shearer ...

    This report describes the development and the underground evaluation of ventilated cutting drums, on a double ended ranging drum shearer. The ventilated drum uses high pressure (1,500 psi) water sprays to draw air (3,500 cfm) through 12 airmoving tubes mounted in the drum hub.

  • In situ studies on service life and pick consumption ...

    In situ studies on service life and pick consumption characteristics of shearer drums The Journal of The South African Institute of Mining and Metallurgy MARCH 2004 109 Figure 2—Picks employed for rock and coal cutting4 Figure 3—Pick positioning on a shearer drum: (a) profile view of the drum (b) lacing of spiral and clearance ring picks7

  • Technics SL-1000R review What Hi-Fi?

    The engineers at Technics have tackled these issues head-on and come up with a sophisticated double coil, twin rotor-type design. Not only is it capable of a high torque output – essential to move the hefty 7.9kg platter – but Technics also claims an astonishingly low wow flutter figure of 0.015%.

  • Global Coal Shearer Market Growth 2018-2023 - Fior Markets

    Double-Ended Ranging Drum Shearer. Single-Ended Ranging Drum Shearer. Single-Ended Fixed Drum Shearer. Three-Drum Shearer. Segmentation by application: breakdown data from 2013 to 2018, in Section 2.4; and forecast to 2023 in section 11.8. Normal Mining. Selective Mining. This report also splits the market by region: Breakdown data in Chapter 4 ...

  • NIOSHTIC-2 Publications Search - 10006107 - Shearer ...

    This report describes the development and the underground evaluation of ventilated cutting drums, on a double ended ranging drum shearer. The ventilated drum uses high pressure (1,500 psi) water sprays to draw air (3,500 cfm) through 12 airmoving tubes mounted in the drum hub.

  • In situ studies on service life and pick consumption ...

    In situ studies on service life and pick consumption characteristics of shearer drums The Journal of The South African Institute of Mining and Metallurgy MARCH 2004 109 Figure 2—Picks employed for rock and coal cutting4 Figure 3—Pick positioning on a shearer drum: (a) profile view of the drum (b) lacing of spiral and clearance ring picks7

  • Technics SL-1000R review What Hi-Fi?

    The engineers at Technics have tackled these issues head-on and come up with a sophisticated double coil, twin rotor-type design. Not only is it capable of a high torque output – essential to move the hefty 7.9kg platter – but Technics also claims an astonishingly low wow flutter figure of 0.015%.

  • Global Coal Shearer Market Growth 2018-2023 - Fior Markets

    Double-Ended Ranging Drum Shearer. Single-Ended Ranging Drum Shearer. Single-Ended Fixed Drum Shearer. Three-Drum Shearer. Segmentation by application: breakdown data from 2013 to 2018, in Section 2.4; and forecast to 2023 in section 11.8. Normal Mining. Selective Mining. This report also splits the market by region: Breakdown data in Chapter 4 ...

  • SWS100/230-WD Shortwall Shearer - Coal Shearers

    SWS100/230-WD shearer is the latest developed double-drum type which is suitable for shortwall and large inclination-angle panel. 1. Design points. In order to fit shortwall working face, the total length is strictly limited within 4m, and electric cabinet uses off-board structure.

  • (PDF) Fully mechanized longwall mining with two shearers ...

    Then, the full mechanization based on a double drum shearer, face conveyor and hydraulic shield support for mining the whole coal seam height In one phase by

  • slingerland drums for sale eBay

    Vintage 1969 USA SLINGERLAND Set-O-Matic double Concert tom DRUM MOUNT. Pre-Owned. $225.00. Buy It Now +$13.25 shipping. Watch. Maxwell Drums Repro Slingerland style tom holder arm. Brand New. $110.00. Buy It Now +$12.00 shipping. 45 watchers. Watch. M 8 7 S 9 V P 6 O K H N S F O R E D A. Slingerland Vintage 60S Deluxe Student Model 14 5 Oyster ...

  • Double Drum Shearer - Beijing HOT Mining Technology Co ...

    HMG200-W Type Double Drum Shearer 1. Product usage and working condition HMG200 - W shearer is a kind of hydraulic no-chain traction double drum shearer. Riding on the scraper conveyor, it can shuttle coal cutting. Installed power is...

  • Erkat Epiroc drum cutter on Laterite cutting - YouTube

    Sep 15, 2018  MB Drum Cutter: Extreme Versatility for Double Rotary Drum Cutter - Duration: 1:17. MB America 846 views. 1:17. RC 90 - Excavator Rock Cutters ...

  • HMG100/240-BW Double Drum Shearer - hotminingepc

    HMG100/240-BW Double Drum Shearer . Brief Introduction . HMG100/240-BW thinnest shearer is a new type machine for mechanized coal mining working face and high-grade mechanized coal mining working face. It’s a super low hydraulic chainless haulage shearer

  • Automation in U.S. longwall coal mining: A state-of-the ...

    For instance, for shearer, there were single and double ranging drum; for the powered support, there were frame (4- or 6-leg), chock (4- or 6-leg), shield (caliper, lemniscate, 2- or 4-leg), and chock shield (vertical or V or cross legs); and for AFC, single center, twin in-board or twin center (TIB), twin out-board (TOB), and triple chain ...

  • Refinement and evaluation of basic longwall dust-control ...

    The objective is to evaluate the effectiveness of available dust-control technology for double-drum shearer longwall sections. A preliminary visit was made to Harris No. 2 Mine, Eastern Associated Coal Corporation, on August 9, 1984, to assess the suitability of the longwall panel and shearer drums for a comparison of the dust-control effectiveness of Thru-flush bits and pick-face-flushing ...

  • Amazon: drum sling

    Timiy 1Pcs 53Inch Nylon Gray Parade Marching Snare Drum Sling Strap Belt Adjustable. 3.6 out of 5 stars 6. $7.99 $ 7. 99. Get it as soon as Tue, Jul 7. Open Closed Head Drum Lifter 1000 Lb. Capacity. 4.6 out of 5 stars 3. $159.00 $ 159. 00. FREE Shipping.

  • Double sides trim shears_qy88千嬴国际官网_千赢国际qy88com_

    Permanent magnet drum magnetic separator. Vertical ring pulsating high gradient magnetic sep. ... Shearer. Rolling Divided Shear. Double sides trim shears. Rolling Slitting Shear. Flying shear. Parallel blade shears. Section bar and rod bar shears. Hydraulic scrap shear. Sawing machine.

  • Double sides trim shears_qy88千嬴国际官网_千赢国际qy88com_

    Permanent magnet drum magnetic separator. Vertical ring pulsating high gradient magnetic sep. ... Shearer. Rolling Divided Shear. Double sides trim shears. Rolling Slitting Shear. Flying shear. Parallel blade shears. Section bar and rod bar shears. Hydraulic scrap shear. Sawing machine.

  • Assessment of Reliability-Related Measures for Drum ...

    double-drum shearer. The length of studied longwall face is 215m and panel length is 1200m. At the time being, the 3rd panel of this mine is being extracted. Technical characteristics of drum shearer of Parvade coal mine is as follow; 600kW total power installed, supply voltage 1100V, cutting head diameter 1600mm, web depth max. 800 mm,

  • AB16/125 Shearer (Anderton Shearer Loader) Coal ...

    May 12, 2005  SDS (Sumping Drum Shearer) at the Tail Gate to cutout the stable under the rip and an AB 16/200 RDS to cut the longwall. As an ex Face Electrician one of the breakdown problems I used to dread on the AB RDS was when the internal emergency stop rods used to bend usually in the two-speed gearbox section of the machine.

  • A model to predict the performance of drum shearers: an ...

    excavated with Eickhoff L-type double-drum shearer machines, the stability at the longwall faces (excavation faces) is ensured by shield supports. The

  • SWS100/230-WD Shortwall Shearer

    SWS100/230-WD shearer is the latest developed double-drum type which is suitable for shortwall and large inclination-angle panel. 1.Design points In order to fit shortwall working face, the total length is strictly limited within 4m, and electric cabinet uses off-board structure.

  • Marcus Shearer Drummer, Guildford (2020)

    🐾🐾A huge thank you to our local Drummer Markus Shearer and Bruce for another donation for the Wonky Dogs. Markus is providing live streams and skype drum lessons during the Covid 19 Lockdown so if you or the children are interested in music well worth a visit over to his page! 🐾🐾

  • A Mathematical Model and Error Analysis of Shearer Cutting ...

    5. Conclusions (1) Based on the attitude and the angle between the arms and mainframe, a mathematical model of cutting path of a shearer was built relative to the local geographic coordinate frame. (2) Considering variables in this mathematical model, errors of main-gate and tail-gate drum positions of a shearer were analyzed based on GA so that suitable and accurate sensors can be chosen ...

  • Coal Mining Double Ended Ranging Drum Stock Photo (Edit ...

    Find Coal Mining Double Ended Ranging Drum stock images in HD and millions of other royalty-free stock photos, illustrations and vectors in the Shutterstock collection. Thousands of new, high-quality pictures added every day.

  • Re: Fujifilm SL1000,HS30EXR or X-S1?: Fujifilm FinePix ...

    Jun 06, 2019  VTRoB wrote: Hi,I have the SL1000 and HS30EXR cameras.Both very similar in design and features.I like the SL for the 50x zoom and the HS for the manual zoom,EXR and more easily accessible settings.I want to sell one of these cameras and possibly get the X-S1.

  • Simulation of the Working Performance of a Shearer Cutting ...

    Abstract. Taking the MG2 55/250-BWD shearer as the research object and considering the influence of the rock on the working performance of the shearer, the shearer-coal-rock coupled discrete element model was established and its dynamic working process has been studied. The single-factor analysis method was used to study the variation law of the cutting depth, traction speed, and the drum’s ...

  • Reliability design of relief groove for torque shaft of ...

    The cutting unit is the working mechanism of shearer. As shown in Figure 1, the function of the transmission device of the cutting unit is to transfer the power of the cutting motor to the picks of the drum, which consumes more than 80% of the total power of the shearer. 1 In the process of cutting coal, the cutting resistance of shearer will change suddenly due to uneven coal quality ...

  • 25-1-2009-JET ASSISTED SHEARER FOR CUTTING

    Double drum shearer was applied (1 k III ∋ Russian type). It has a diameter 1.8m, 0.64 m web, three vanes, Each vane carries 10 point attack picks and a back plate ring carries 12 picks arranged in 4 cutting lines, A, B, C, and D. See Figure 6. [2] The double drum shearer was subjected to severe vibrations that caused frequent break down of

  • Комбайн: перевод на английский, примеры, транскрипция ...

    Варианты перевода слова 'комбайн' с русского на английский - combine, combine-harvester, в словаре WooordHunt, с возможностью узнать транскрипцию и послушать произношение.

  • John Shearer Drums - Steve Hackett Drummer, Drum Lessons

    I have built up drum schools both here and in America and feel proud to say I have helped many drummers gain success in their music careers. I feel confident I can help you whether you want to learn single or double bass drum or rudiments and how to utilise them around a kit.