Slow rotation of cutter-loader drum

FIELD: machine building.

SUBSTANCE: group of inventions relates to cutter-loaders. Cutter-loader includes a cutting drum with multiple cutting teeth arranged on the drum and a mechanism of the cutting drum rotation. Mechanism of the cutting drum rotation includes a power supply source, a cutter motor, a switch and a drive with controlled frequency. Switch has the first and the second states. First state electrically connects the power supply source and the cutter motor for operation of the cutting drum at the rate of cutting, a the second state electrically connects the drive with controlled frequency and the cutter motor for operation of the cutting drum at the rate of servicing, lower than that of cutting.

EFFECT: technical result is provision for rotation of the cutting drum of the machine at the rate of servicing.

20 cl, 4 dwg

 



 

Same patents:

The invention relates to coal shearers and can be used in the coal industry

Mountain harvester // 2171375
The invention relates to equipment for mechanization of extraction of natural resources in their production treatment faces underground

FIELD: mining.

SUBSTANCE: shaft-sinking and tunnelling winning unit for mechanisation of mine workings and mining operations comprises a platform in the form of a frame with support skis and the adjustable insert, a mining machine with symmetrically placed screws on the output shafts of gearboxes, the face conveyor with line pans, the sections of mechanised shoring with bases and canopies with hydraulic props of the thrust and the jacks of shifting, the scraper reloader and the control panel. The platform is made autonomously and is provided with a feeding mechanism in the form of a feeding mechanism of the mining machine with the ability of rigid placing on it of the housing of the mining machine in cleaning and in excavating implementation.

EFFECT: reduction of metal consumption, increased performance and reliability.

8 cl, 10 dwg

FIELD: mining.

SUBSTANCE: method to change over cutter-loader with auger actuators to new mining strip with location of face conveyor drive in longwall face and single-sided pattern of extraction, includes movement of cutter-loader with mineral extraction from cutting zone. At the same time at the end section of longwall face, at the distance equal to the distance between axes of cutter-loader augers, two wells are drilled, to the depth equal to one width of cutter-loader grip. Then cutter-loader moves as idle-running to the end of longwall face, afterwards cutter-loader augers are installed along axis of wells, where at frontal feed of cutter-loader, auger hubs enter wells, and auger blades destroy massif and produce mineral to conveyor with subsequent movement of cutter-loader and formation of new mining strip. In another version of method, cutter-loader changeover is proposed with shuttle method of extraction.

EFFECT: higher efficiency of mining faces operation, simplified technology of second working, reduced costs for equipment, less time spent for auxiliary operations, increased resource of conveyor operation, elimination of multiple bends in conveyor stand.

2 cl, 3 dwg

FIELD: mining.

SUBSTANCE: invention relates to mining industry and may be used to win bedded minerals along bed hypsometry, also under complicated mining and geological conditions. Winning machine for bedded minerals includes sections of bearing powered movable support with longitudinal guides, where sections of guard shield are installed, being connected to sections of actuator with drive installed along front of bed winning. Winning machine is additionally equipped with brackets having cutters for damage of face from surface along cutting lines directed along front of bed winning with pitch providing for reservation of pillars between them. Brackets with cutters are joined to each other by sections of actuator with drive. Brackets with cutters are rigidly installed on sections of guard shield with drive of its motion along longitudinal guides of sections of bearing powered movable support.

EFFECT: reduced power intensity of face damage, provision of monitoring of machine position relative to bed, increased efficiency of machine, reduced dilution.

3 cl, 5 dwg

FIELD: mining.

SUBSTANCE: invention relates to minerals industry, particularly to treating combines for selective concavity of heavy, predominately potassic layers with rock interlayer. Combine for selective concavity of heavy potassic layer with rock interlayer includes casing, on ends of which there are mounted with ability of rotation in vertical plane two handles, each of which is outfitted by integrated rive and screw, and additional cutting block. Additional cutting block contains handle with integrated drive and screw, and is rigidly fixed to casing of combine. Fixed on body basis of cutting block is pivotally connected to carrier and hydro- thruster climbing of handle, which is rigidly connected to slider, installed in guide groove of carrier with ability of displacement with handle to bottom for value not less than width of screw, diametre of which is not more than power of top layer. Additionally end main screws of combine are implemented with diametre of not less than half of power of more heavy layer of stratum.

EFFECT: effectiveness increase of selective concavity of heavy layer with rock interlayer independently from capacity of the latter.

2 dwg

FIELD: mining.

SUBSTANCE: invention relates to mechanisation facilities for underground selective concavity of thin predominately potassic layers by treating combines. Combine for selective concavity of thin layers of minerals includes body, at ends of which there are mounted with ability of rotation in vertical plane two handles, outfitted by agreeably integrated drive and screw with loading shield, and carrier. One of handles allows rigidly fixed on it slider with ability of displacement of it with handle in guide channel of carrier to bottom for value not less than width of screw, diametre of which is not more than output of rock layers of roofing, located at break between bottom and transporter. Screw of other handle is implemented of diametre not less than half of total power of fall rock layers of roofing and mineral.

EFFECT: design simplification of combine, decreasing of its weight and reliability improvement in operation at selective concavity of thin layers with coal-cutting with stone of roofing.

2 dwg

FIELD: mining.

SUBSTANCE: group of inventions refers to mining, particularly to miner for excavating beds of minerals. The miner for excavation of beds of minerals with rock inclusions, notably, of coal beds, consists of case 22 with electrical 2 and hydraulic 3 blocks arranged on the case, of control panels 4 and 5 of the hydraulic blocks and of mechanisms 7 and 8 for miner advance; said mechanisms interact with a pin bar 10 of conveyor 9. Also the miner consists of at least one handle 15 swiveling in vertical plane and assembled at the end of case 22; the handle is equipped with actuator 23 for mineral cutting; the actuator is driven to rotation by means of engine 17 and reducer 18 placed inside handle 15. Also the miner is equipped with main mechanism 24 installed between handle 15 and case 22; the main mechanism advances handle 15 onto a face at destructing of rock inclusions and it is equipped with facility 25 for maintaining the miner immobile, when actuator 23 is cutting rock inclusions.

EFFECT: high efficiency of mineral excavation.

16 cl, 20 dwg

FIELD: mining.

SUBSTANCE: invention relates to the mining and can be used in mining machines for coal cutting and breaking the soft ores, e.g. kimberlite. The movable operating element of the mining machines contains the screw conveyer with the inclined spiral cutting strip consisting of the separate sections projecting above the screw conveyer's blade. The section of the spiral cutting strip are placed alternately to each other at the distance L equal to 0.3D of the angle diameter D of the loosened fragment, have the width B equal to D - the angle diameter D of the loosened fragment. The angle of inclination to the contour line of the upper side of the breaking segment is taken as 7°, and the angle of inclination to the contour line of the inner side of the breaking segment is taken as 47°.

EFFECT: area of application of machines for coal cutting and soft ore breaking is broadened.

2 dwg

Mining machine // 2307933

FIELD: mining, particularly machines which completely free the mineral from the seam, namely coal mining machines with auger executive tools adapted for underground mineral mining.

SUBSTANCE: mining machine comprises hydraulic driving mechanism, drive, reducers, height-adjustable augers and loading flaps. The machine has additional executive tool made as a number of cutting discs connected to single vertical shaft and arranged in front of augers in machine movement direction. Cutting disc radius is equal or greater than auger width.

EFFECT: improved coal grade of quality.

3 dwg

FIELD: mining industry, possible use in mining machines with cutting working tools (worms, crowns, drums), in particular in drilling combines and complexes for driving mines of rectangular cross-section.

SUBSTANCE: working tool contains frame, on which motor is held with cutting tool. Motor is made in form of two independent reducers with engines. Cutting tool is made in form of four separate drums. On output shaft of each reducer two drums are mounted. Each reducer is held on frame with possible transverse movement relatively to the latter.

EFFECT: high productiveness during work with hard rock, expanded area of possible use depending on width of mine being driven, possible destruction of rectangular face using simple plan, not requiring high combiner skills.

2 cl, 7 dwg

FIELD: mining, machines which completely free the mineral from the seam by slitting, particularly cutter-loaders provided with two auger executive tools spaced apart large distance.

SUBSTANCE: method involves preparing cutter-loader and support units; moving cutter-loaded to central breakage face section; moving face conveyer flight part; returning cutter-loader; supplying support units and supporting roof over cutter-loader; moving cutter-loader in extreme position so that the first executive tool enters drift joined to breakage face; preparing cutter-loader by removing the second executive tool from opposite drift side or arranging thereof in transport position; installing the first executive tool in lower position. Face conveyer flight is moved along the full breakage face length, namely in frontal manner. Cutter-loader is moved in central part of breakage face along with bottom massif bank cutting and kert forming, wherein the kert extends for length of not less than cutter-loader length. Then cut coal is loaded on conveyer. After cutter-loader return the second executive tool is installed in place or moved in working position.

EFFECT: increased efficiency of gently sloping coal bed development due to provision of cuter-loader self-sumping during front movement of face conveyor.

3 dwg

FIELD: mining.

SUBSTANCE: in order to enlarge the range of simultaneous processing and versions of control of a cutting force in the processing zone, formation of destruction zones is performed considering strength characteristics of rock as to width of the processed surface at variation of functional and technological parameters and their rational combination under conditions of selective development of deposits with complex structures. Strength characteristics of rock are fixed by mine rock strength recording sensors connected through a system block to a control system of operation of hydraulic cylinders, and drum balance is provided by distributed offset of hydraulic cylinders. Pressure of working liquid in piston cavities of the hydraulic cylinders is designed for a force required for rotation of turning levers.

EFFECT: increasing productivity, improving reliability and enlarging technological efficiency of destruction of rocks of different strength and coherence degree by controlling a cutting force in a zone of processing and formation in a surface layer of the processed massif of destruction zones considering strength characteristics of rock at selective development of deposits with complex structures by means of open-pit surface miners.

2 cl, 6 dwg

FIELD: mining.

SUBSTANCE: facility for milling and/or drilling rock or similar materials consists of spindle drum assembled on support and intended to rotate around axis; several rotating cutter spindles are installed in drum eccentric to axis of drum. On their ends projecting out of the spindle drum the cutter spindles bear working tools. At least two of cutter spindles are actuated from a common reducing drive, which has driven tooth gears stationary arranged on the cutter spindles and a common drive element interacting with driven tooth gears. Also the drive element and the spindle drum are assembled so as to provide their rotation relative to each other.

EFFECT: processing hard materials at high efficiency of milling, increased operation life of tools, high operational reliability and compactness.

55 cl, 22 dwg

FIELD: mining.

SUBSTANCE: invention relates to the mining and can be used in mining machines for coal cutting and breaking the soft ores, e.g. kimberlite. The movable operating element of the mining machines contains the screw conveyer with the inclined spiral cutting strip consisting of the separate sections projecting above the screw conveyer's blade. The section of the spiral cutting strip are placed alternately to each other at the distance L equal to 0.3D of the angle diameter D of the loosened fragment, have the width B equal to D - the angle diameter D of the loosened fragment. The angle of inclination to the contour line of the upper side of the breaking segment is taken as 7°, and the angle of inclination to the contour line of the inner side of the breaking segment is taken as 47°.

EFFECT: area of application of machines for coal cutting and soft ore breaking is broadened.

2 dwg

FIELD: mining, particularly cutter-loader drums, for instance pick lacing thereof.

SUBSTANCE: cutter-loader drum comprises cylindrical body with outer cylindrical surface, guiding members extending from cylindrical surface. Each guiding member is inclined relatively longitudinal drum axis. Each guiding member has a number of cutters having front surface, rear surface and side surfaces arranged so that front and rear surfaces are located between side ones. As drum rotates the cutters pass along cutting paths. Cutters moving along adjacent paths are spaced 30-100 mm apart in longitudinal direction. Said distance is measured between neighboring side surfaces of cutters moving along adjacent paths.

EFFECT: elimination or reduction of cutter wear and dust generation.

6 cl, 5 dwg

Auger cutting tool // 2260120

FIELD: mining equipment, particularly auger cutting tools of narrow-cut mining machines used in production faces for underground mineral excavation.

SUBSTANCE: auger cutting tool has cylindrical body and loading blade with screw surface on which cutter holders with cutters are installed. Generator of the screw surface is curvilinear and has concave surface arranged from working blade surface side. Radius of curvature provides 40-50° angle defined between lines tangent to outer circle of screw blade and to blade generator in point of their intersection.

EFFECT: increased efficiency of auger cutting tool.

3 dwg

FIELD: mining industry.

SUBSTANCE: combine has main body, drive, feeding mechanism and executive tool, which is made in form of drum with horizontal rotation axis. It is placed at non-straight angle to longitudinal conveyor axis and is turned in horizontal plane in direction providing for displacement of trajectory of coal output towards conveyor. Drum has cylinder, on outer surface of which in certain order cams with cutters are fixed. Inside the cylinder three or five electric engines are placed. These are inserted in parallel in recesses of fixed body with inner teeth of sun ring of planetary gear, which interact with three satellites. Output shafts of three or five electric engines interact with one common cog-wheel. It is placed coaxially with planetary gear and engaged with it by torsion shaft having two cog tail pieces. One of tail pieces interacts with inner slits of wheel hub, and another interacts with teeth of three satellites of planetary gear. Mechanism for hoisting drum mechanism along bed massive has handle raising jack and handle with horizontal rotation axis placed in horizontal plane at non-straight angle to conveyor axis and turned to direct displacement of executive tool towards pit-face. Shoes of stability mechanism for combine are provided with reverse clamps for shelves on front pit-face and back dump sides of conveyor. Back support of conveyor on soil is placed on dump end of inter-section beams. Combine feeding mechanism has drive for chainless feeding system and leading sprocket. Sprocket interacts with fingers of conveyor rack. Drive is placed beyond handle of executive tool and is made in form of separate electric engine with reducer of self-braking worm type. Engagement of sprocket with fingers is guaranteed by reverse clamp of reducer engaging back planes of conveyor rack carrying these fingers. In method for loading coal on conveyor, drum rotation axis in plane around vertical axis is turned in certain direction to turn trajectory of coal towards conveyor. Movement of mining drum along conveyor is performed first along ceiling, and then along soil along coal output direction while providing for cleaning of soil in direction of frontal movement of conveyor to pit-face.

EFFECT: lesser dimensions, lesser mass, higher quality of operation.

7 dwg

The invention relates to a screw Executive bodies excavation machines

The invention relates to mining and can be used in cleaning machines for extraction of coal

The invention relates to the mining industry and is intended for use primarily in the treatment combines
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