(57) Abstract:The invention relates to mining and transport machines and can be used for delivery of bulk materials on the mountain you are the studies, in particular the delivery of coal to prespectrum furnaces under shield lining. In the scraper conveyor comprising a traction element pivotally attached scrapers, drive reciprocating and suspension system of the conveyor beneath the shield the shield, scrapers are in the form of curved plates with brackets, which they are pivotally attached to the traction element and pivotally interconnected hard thrust. Step t install scrapers on the traction element is larger than the radius R of rotation of the cutting edge of the scraper. Stroke l of the drive reciprocating equal to or greater than an integer time step t install scrapers on the traction element (l = kt, where k = 1,2,3...). Improves the performance of the conveyor. 2 C.p. f-crystals, 3 ill. The invention relates to mining and transport machines and can be used for delivery of bulk materials in mining, in particular the delivery of coal to prespectrum furnaces under shield lining.Known scraper conveyor for delivery of coal in the panel bbchami, which is installed in the guide and the roller mounted on the axes of the connecting section of the supporting frame of the conveyor and mounted on a frame of the drive. The disadvantage of this conveyor - low productivity due to the inability to use a large scraper. The size of the scrapers of such a pipeline is limited, cramped conditions panel of the face and size of drive sprocket chain. The increasing size of the scraper requires an increase in the radius of rotation of the chain and thus increasing the radius of the drive sprocket that cannot be performed due to the small width of the face for panel lining.The closest analogue to the claimed invention is a scraper installation described in the book of M. C. Kurlenya, L. C. Zvorygin Century A. Lebedev. The shield technology development of coal deposits. Novosibirsk: Nauka, 1988, S. 136. The system includes a traction element in the form of a ship chain, a hinge mounted on the traction element drop-down scrapers, winch, which serves as the drive of the reciprocating action, and the suspension system of the conveyor under shield lining. Each scraper is made in the form of two buckets grooved form, attached the earring and rings to the traction element. Under the on disclosure. The transportation of the material in this period, which significantly reduces the portion of floating granular material and the distance of the transportation portion of the cycle, i.e., limits the overall performance. In addition, scraper conveyor disclosed due to the friction of the bulk material independently from each other, which leads to the timing of their disclosure, and sometimes to slippage of individual pigs in unopened form, which significantly reduces the capacity of the conveyor as a whole.Technical problem - increasing the performance of the scraper conveyor.This task is solved in that the scraper conveyor comprising a traction element pivotally attached scrapers, drive reciprocating and suspension system of the conveyor beneath the shield the shield, scrapers are in the form of curved plates with brackets, which they are pivotally attached to the traction element and pivotally interconnected rigid thrust: with step t install scrapers on the traction element is larger than the radius R of rotation of the cutting edge of the scraper, and stroke 1 drive reciprocating equal to or greater than an integer time step t installation skreb is which they are pivotally attached to the traction element and pivotally interconnected hard thrust. This design execution nodes scraper conveyor increases the prism drawing of the bulk material and provides disclosure of all scrapers when the engagement of the material to be conveyed at least one scraper that improves the performance of the conveyor;
step t install scrapers on the traction element is equal to or greater than the radius R of rotation of the cutting edge of the scraper, which eliminates at flybacks scrapers they touch the prisms of the drawing, i.e., moving the top of the prisms in the direction opposite to the conveyance, and improves the performance of the conveyor;
stroke l of the drive reciprocating equal to or greater than an integer time step t install scrapers on the traction element, which ensures the lowering of the scraper cutting edges at the base of the prisms of the drawing, and as a consequence, improving the performance of the pipeline.In Fig. 1 shows the proposed scraper conveyor, the General view when working stroke; Fig. 2 - General view when reverse motion; Fig. 3 is a cross section of the pipeline.The conveyor includes drive 1 reciprocating made, for example, in the form of cylinders with alternate switching piston cavities, the traction element is et to be made in the form of chain or rope. Scrapers 5 are curved profile shape and rigidly attached to the brackets 3, for example, by welding. The brackets 3 scrapers 5, except for hinged attachment to the traction element 2, the hinge connected between a single rigid beam 6 and the fingers 7. Beam 6 performs the role of traction. The entire makeup of the conveyor by means of the suspension system 8 (Fig. 3) is attached to the panel to overlap so that the scrapers freely rely on the bulk material.Scraper conveyor operates as follows. In the initial position of the traction element 2 (Fig. 2) is in its rightmost position, the brackets 3 with scrapers 5 are lifted up by turning on the fingers 7 to an extreme position. The extreme position of the scrapers 5 are occupied when a rigid beam 6 and the traction element 2 is pressed over the entire length to each other. Under the force of the actuator 1 starts working stroke traction element 2 with the extreme right position is moved to the leftmost position. In this case, since the brackets 3, the traction element 2, the beam 6 are connected pivotally and scrapers 5 have some mass, then moves the beam 6 relative to the traction element 2, resulting scrapers 5 with brackets 3 are rotated by some angle relative to the fingers 7, omitting renouncement disclosure of all scrapers due to the gearing for the material to be conveyed at least one scraper - the force acting on one scraper, thanks to the hard pull is transmitted to other pigs, and swivel provides smooth rotation of the brackets with scrapers relative to the finger 7. This eliminates slippage and conceal scrapers, which increases the performance of pipeline per cycle in comparison with the prototype. Further movement of the traction element 2 to the left leads to a further lowering of the scraper cutting edges 5 and their implementation in the transported bulk material. Full disclosure scrapers. As the distance between the fingers 4 and 7 is much less than the distance from the cutting edge of the scraper to the finger 7, the arc of the trajectory of movement of the fingers 4 together with the traction element 2 is also less than the length of the arc of rotation of the cutting edge of the scraper 5. This ratio provides disclosure scrapers with a relatively small movement of the traction element 2, respectively, the remaining large part of the stroke l of the drive is spent on useful moving bulk material. This design provides a dramatic reduction of time for disclosure of scrapers, which allows to reduce the stroke length l of the reciprocating actuator and to increase the number of cycles per unit in the further movement to the left move before a granular material, forming a prism drawing before each scraper. Moving scrapers portions of the bulk material occurs before the end of the stroke l of the drive, and extreme scraper passes over the stove or receiving portion of any bunker, bulking it transported material. Curved profile scrapers 5 due to bending increases the volume of a prism drawing, in comparison with a straight scraper, that also increases the roaming portion of the bulk material, and therefore, the performance for the cycle.After unloading the leftmost scraper moves the traction element 2 in the reverse direction (to the right), and in the initial period of the reverse l moves the traction element 2 relative to the beams 6 and the rotation of the scraper relative to the finger 7 with the rise of the cutting edge. Scrapers 5, making complex movement (moving horizontally to the right and simultaneously lift), free of loose material. Prism drawing after the liberation of the scraper showered, forming a slope from the side of the scraper is equal to the angle of repose of the bulk material, which for bulk materials such as ore, coal 30-45o. Upon further movement of the traction Lamego beam 6. The conveyor is raised scrapers 5 under the action of the actuator is moved to the right for the remainder of the stroke l of the drive. After reaching the rightmost position of the traction element 2, the cycle repeats. As the unloading of bulk material from under the conveyor, the entire structure of the conveyor suspension system 8 is lowered to the bulk material, ensuring complete filling of bulk material scrapers when working stroke.The angle of the cutting edges of the scrapers 5 are selected in such a way as to reverse the course of the scrapers are not concerned collapsed prisms drawn and there was at least a partial reverse movement of the bulk material. This is possible if step t install scrapers on the traction element 2 more radius R of rotation of the cutting edges of the scrapers. When installing scraper with a radius smaller than the radius R of rotation, the scrapers will be in the reverse course to catch a prism drawing and move them to the upper part in the direction opposite the transport. The portion of the bulk material transported per cycle will decrease, reducing the performance of the pipeline.The length of the base B collapsed prism drawing (fully loaded scrapers bulk material) is equal to twice the UP>).B = 2h/[tg(30-45)].The step size t install scrapers must be equal to the base length B collapsed prism or to be more (t = B). Otherwise, the cutting edge of the scraper after lowering when working course will not be placed at the base of the prisms and upon further movement of the loose part will remain in place, thereby reducing the portion of the transported each scraper, which also reduces performance.Stroke l of the actuator is chosen so that over the receiving portion opesuse furnace or hopper will be discharged one or more scrapers, and the stroke l of the drive must be equal or greater in integer time step t install scrapers on the traction element (l = kt, where k= 1, 2, 3.. .). When choosing the ratio between l and k is not equal to the whole number of cutting edges scrapers 5 will not go down at the base of the collapsed prisms lugs and the portions are roaming loose will be less, which will reduce the performance of the pipeline.The proposed design can make unloading coal at the two flanking opesuse furnace, for this half of the scrapers must be set against stroke (scrapers rotated around the vertical axis by 180 degrees. ), have a look at Govou oven, that also increases the performance for the cycle.Thus, the proposed technical solution in comparison with the prototype improves performance per cycle and per unit of time in 2-3 times. 1. Scraper conveyor comprising a traction element pivotally attached scrapers, drive reciprocating and suspension system of the conveyor beneath the shield the shield, wherein the scrapers are made in the form of curved plates with brackets, which they are articulated to the traction element and pivotally interconnected hard thrust.2. The pipeline under item 1, characterized in that the step t install scrapers on the traction element is larger than the radius R of rotation of the cutting edge of the scraper.3. The pipeline under item 1, characterized in that the stroke l of the actuator is equal to or greater than an integer time step t install scrapers on the traction element l = kt, where k = 1,2,3....
SUBSTANCE: conveyor delivers products pneumatically and contains mechanical conveyor (2), formed by moving element running in shell with feeding port. Transfer box with transfer chamber is crossed by the said moving element which discharges products in them. Transfer chamber has two through openings one of which communicates with source (7) of compressed air, which transfers products in distributing pipeline. The conveyor includes facility (100) for detection of conditions for locking moving element. This facility is capable to give signal when these conditions are detected. This signal switches on control device (110) giving command for reversal of moving element for specified time period. At the end of hold period, control device gives command for running moving element in its normal direction.
EFFECT: invention provides increased reliability in the process of fibrous materials transportation.
52 cl, 33 dwg
SUBSTANCE: transporting device (1) has transportation channel (4) in form of transporting pipe (5), two grips (2) and drive (6) for grip (2) actuating for loose material (3) transportation along transportation channel axis (7). Grip is partially freely arranged in transportation channel (4) along transportation channel axis (7). Forces between two grips (2), located next to each other in transportation channel (4) in parallel to transportation channel axis (7), are transmitted by direct contact between them and/or by means of loose material, located in transportation channel between grips (2). Drive (6) enters transportation channel (4) on drive section (8) to transmit force to grip (2), arranged on drive section (8) in parallel to transportation channel axis (7).
EFFECT: increasing transporting device reliability.
16 cl, 26 dwg
FIELD: mining industry.
SUBSTANCE: method for extraction and underground use of coal includes cleaning extraction and dumping of coal, fixing and controlling ceiling and transporting coal along face to drift. On the drift, in moveable generator, coal is pulverized for intensive burning with use of jets in water boiler firebox, where high temperature of steam is achieved (about 1400 C°), enough for decomposition of water on oxygen and hydrogen. These are separated, then oxygen is fed back to jets, and hydrogen is outputted along pipes and hoses in drifts and shaft. Variants of underground generator for realization of this method are provided. Also provided is method for extraction of disturbed coal beds by short faces. It includes extraction and dumping of coal on face conveyor, fixing of ceiling behind combine, moving conveyor line and support sections in direction of cleaning face displacement, control of ceiling with destruction and partial filling. Extraction of coal is performed in short curvilinear faces by long stripes along bed, in straight drive without forwarding drifts, with preservation and reuse of ventilation and conveyor drifts, equipped with mounting manipulator robots, with fixing behind combine by automatically operating support deflectors without unloading and displacing sections in area of coal extraction. Extraction and transporting of coal is performed by fast one-drum combine and curvilinear reloading conveyor, supplying coal to drift conveyor or immediately to underground gas or energy generator placed immediately on drift. Also proposed is face scraper conveyor for realization of said method, wherein pans are made with step along front face profile, greater, than along back one, while forming common line curved towards face with constant curvature. Also proposed is a method for controlling complex for unmanned coal extraction.
EFFECT: higher efficiency, effectiveness, broader functional capabilities.
8 cl, 5 dwg
FIELD: mining industry.
SUBSTANCE: invention can be used for transportation of rock in underground mines for reloading of rock from one conveyor to the other installed at one level. For this purpose device is used containing pair of flight conveyors, forced-draught and suction fans, air chamber with air inlet hole provided with cyclone installed over flight conveyor to be loaded. Air chamber is arranged between conveyors and is furnished with air collector made in form of screen with cells, housing and brushes from side of conveyors. Additional hole is made in bottom of air chamber to deliver air jet at angle to direction of material movement.
EFFECT: device of simple design providing effective and safe reloading of rock from one conveyor to the other installed at one level.
FIELD: mining industry.
SUBSTANCE: invention relates to vibrating facilities and it can be used for letting out ore or other materials and their separation. Proposed vibrating feeder has resilient supports, working member consisting of charging and discharge parts and vibrating drive consisting of two shafts with unbalance weight and motors, one per each unbalance weight. Place of arrangement of vibrating drive is determined basing on the fact that line of connection of axles of unbalance weights is located in area limited by two straight lines square to direction of vibration, one of which passed through center of mass, and the other is located at a distance from center of mass of 1/10L to side of charging part of working member. Axle of unbalance weights are located at different sides from line of direction of vibration passing through center of mass at distance equal to not less than 1/8 where L is distance between resilient supports in horizontal direction.
EFFECT: improved stability of operation of vibrating feeder at unstable supply and impact loads on working member at discharging.
FIELD: mining industry; transport facilities.
SUBSTANCE: invention can be used for transportation of rock under ground, particularly, for reloading of rock from one conveyor to the other arranged at one level. For this purpose loose material reloading device is used which contains inclined and horizontal sections with drive arranged on support between two conveyors. Device is installed in housing with windows from side of conveyors, and is made in form of chain with scrapers passed over rollers and installed for moving in pair of trapezoidal guides. Housing is installed on support by means of hydraulic jacks. Angle of tilting α of side of trapezium is within 35° and 45°.
EFFECT: simple design, provision of effective and safe reloading of rock from one conveyor to the other arranged at one level.
FIELD: mining industry; mine plants.
SUBSTANCE: invention is designed for selective transportation of mineral resources. Proposed conveyor contains rigidly mounted on buntons chute-like section guide conductors with curvilinear sections, articulated members with two load-carrying units freely suspended from axles and arranged symmetrically on each member and provided with gear wheels for selective transportation of load, and guide rolling supports on axles of members for engagement with said guide conductors. Rolling elements of rolling supports are made in form of balls. Conveyor is furnished also with distributed linear hydraulic drive. Guide rolling supports are provided with metal journals with rectangular seats on free places of which detachable inserts are installed accommodating said rolling elements in form of balls. Detachable inserts are installed for corrective displacement by means of pressure spring to adjust distance between guide rolling supports and inner surfaces of chute-like section guide conductors.
EFFECT: provision of reliable operation of conveyor.
FIELD: mechanical engineering; conveyors.
SUBSTANCE: invention relates to conveyors with multichain traction member. Proposed scraper conveyor contains endless traction member consisting of parallel traction chains, two outer chains and one inner chain, closed in vertical plane on end sprockets and resting on guides of panline flight. It is provided with scrapers secured in turn by ends on outer chains, alternating with scrapers freely fitted with clearances between outer chains and attached by ends on inner chain. Scrappers secured on outer chains are provided with cavities for accommodating inner chain. Traction member is furnished with additional inner chain, both inner chains being arranged in middle part of panline flight symmetrically to each other relative to longitudinal axis of conveyor, and scrapers being secured by ends on both inner chains. Distance between outer and inner chains is set less than distance between inner chains.
EFFECT: increased length of flight owing to increased summary breaking force of traction member chains.
FIELD: mining industry.
SUBSTANCE: proposed member includes slats with connecting elements secured on running rollers and round-link chain. Connecting elements are made in form of two guide slats, fastening, fastening pin and yoke enclosing horizontal links of chain, and ends of vertical links are located between guide slats.
EFFECT: reduced metal usage for manufacture of connecting elements, reduced time taken for mounting and demounting, simplified design of traction-and-carrying member of slatband conveyor.
FIELD: mining industry; face and drift conveyors.
SUBSTANCE: proposed section contains lower run 2 and upper run 3 for driving chain scrapers, welded frame structure 1 with interconnected sides, transport bottom 8 and connecting appliances 60. according to invention, sides consists of mirror turned-over solid rolled sections 10 of asymmetric form constant along length of section. Sections 10 are turned outwards and they include lower and upper shelves and raised intermediate shelf connecting lower and upper shelves and provided with bend on which at least one step is made from inner side to support and weld-to at least one intermediate sheet 40A reinforcing rolled sections 10. Transport bottom 8 is welded to two rolled side sections 5 to form replaceable tray 4.
EFFECT: simplified design owing to reduction of number of components, and facilitated manufacture owing to automatic mounting and welding operations.
26 cl, 7 dwg