SUBSTANCE: scroll conveyor designed for vertical coarse size elements transportation. Scroll conveyor consists of an outer casing with a platform, scroll spiral, loading and off-loading window, off-loading chute and reduction gear. The casing is equipped with an inner linear groove located parallel to the axis along the casing. Inside the casing splined bushings with hollow axis and splined bushings anti-rotation device is situated on the stationary shaft. Bearing bushings of helice severity are located in the casing. Reduction gear is situated in the upper, lower or middle part of the casing.
EFFECT: enhancement of the coefficient of uprise of transported masses efficiency, as well as reduction in the quantity of the equipment items involved, elimination of breaking zones at the centerline and in the corners of the spiral-shaft.
Screw conveyor is a device intended for development and application in mining, metallurgical and construction to design and manufacture screw conveyors are of modular type, to navigate lumpy product on any, beforehand set height for improving performance in minimum space, with minimal cost, minimal amount of equipment. The application of this device will help to significantly reduce the cost of operation of the lifting rocks to the desired height.
At the moment there are many varieties of screw conveyors, but what the market offers, and is intended only for bulk products with a maximum capacity of 1.4 t/h. For vertical augers, patent RU 2264969 and others, with the end of the nozzle with the two helices in the download area of the screw and also for bulk products, USSR author's certificate No. 724715 - vertical screw conveyor with screw with a Central shaft and longitudinal corrugations on the inner and outer surface of the shell-casing device for rotary drilling of bore-holes.
The closest analogue design is A.S. of the USSR №724715, but for the efficient movement of material vertical screw conveyor should be possible to quickly remove material from the zone download the key. Otherwise, it is filled by the material of the first turns of the screw, then the seal material in the interturn space, especially in the area of the junction - spiral welding to the shaft of the screw - dead zone and is quite extensive, and consequently stop the auger, especially when a considerable height. The present invention is directed to a compact, mobile modular for the transport of the coarse fraction of the breed.
The technical result consists in increasing the efficiency of the lifting of the transported mass due to the absence of dead zones in the working of the spiral, i.e. the lack of the shaft of the spiral, which is the basis of the rigidity of the screw, helps to eliminate zones of inhibition-sticking to the axis and in the corners of the spiral shaft, preventing the introduction of species total volume in space turn-round in the pitch of the helix, which reduces the working area of the sliding rocks of the spiral due to the sticking - seals breed in dead zones of the screw, reducing efficiency. The cheaper upgrade process destroyed the breed by reducing the installation area of the conveyor, reducing the number of the employed equipment (a set of heavy-duty vehicle fleet, maintenance), because the performance of screw conveyors will compete with trucking in development and production processes.
The specified technical the ski result is achieved by that device is a screw conveyor, which includes a housing 11 with the internal splines 5, boot, box 13, the working coil 9, is welded (12) to the inner surface of the pinion spiral gear 7 and rotating in the inner space of the shell 11 between the fixed inner splined surface of the housing 11 with the slots 5 and the stationary flat surface of the slotted nozzles 1 with 2 slots.
Because the required length of the conveyor may vary considerable quantities of 5-10-15 m in diameter and up to one meter, instead of 80 mm while rotating 224 rpm and the length of 1.5-2 m in EN 2264969 (by the way, screw reloading-feed conveyor, cement, inert dust, used in mines explosive gas and dust is provided in the rotation shaft manual motor for drilling with rotation at 270 rpm), the system will not work - needs more drastic measures.
Consider a specific example
You want to move large breed with mechanical shaft sinking with obtaining major fraction of the product in 50-150 mm to a height of 10 m (three-tiered stem tunneling shelves) for loading the hopper of the upper tier. Allowable weight of the product in the auger when the inner diameter is 1 m, and the outer diameter of the slotted nozzles 300 mm when beats. weight 3 g/cm3will be equal to 21 who /this is already a significant value.
Therefore, to compensate for the forces of compression and tension loaded spiral, because she is a working body and must withstand these loads, we must take certain measures. First, divide the load in half, i.e. set the gear 7 in the middle of the conveyor. Secondly, divide polovinnuju load in half, i.e. half the distance between the base 15 and the gear 7 mounted in the middle of the conveyor, Figure 2, install the bushing stiffness helix 3 and fasten welding 12, Figure 1, on the upper half between the gear 7 and the boot box 6 also install the bushings stiffness, which will take the efforts of the compression and tension of the spiral, in this case, a stationary slotted nozzle is solid from the base to the upper end of the conveyor.
Thirdly, in order to stabilize and reliable operation of the spiral set of angular contact bearing at the base of the auger at the end of the spiral and radial-thrust bearing on the top cover of the conveyor.
In reality, the occupancy rate of the conveyor may be at 2/3 of its volume and distribution in spiral coils 9 with a uniform continuous loading is uniform, that is why, by dividing the total load and passing her sleeves hardness 3, we can significantly reduce the thickness of the spiral 9 and if you install the bushings stiffness 3 hollow stationary axle - OS is ove Assembly slotted nozzles, that is why me laid slotted nozzles for solutions to technological issues of the conveyor Assembly and installation of bushings hardness of 3 on the inner diameter of the helix will need oil station 17 and the oil passages 18 within the hollow stationary axle for lubrication bushing stiffness on the fixed axis.
1 shows a screw conveyor with positioning at the top of the conveyor and in the middle of figure 2 (preferably for a considerable length of the conveyor).
The design of the bearings 14, nasdaw 1, the hollow axis 10 slotted sleeve 4, or without it can be different. Similarly, the housing 11 may be of one-piece tube or a composite of the two, cut along the axis of the halves with a special clamp or clamps. Arriving at the loading material is passed through a vibrating screen to separate large pieces. Example: outer diameter 11-1000 mm, inner diameter of the helix 9 is 300 mm, the pitch of the helix - 400 mm
Accidental simultaneous hit on the boot screen 13 2-3 pieces of 200-300 mm they can rasklinilsja between two turns of the helix or between the outer casing 11 and slotted nozzles 1.
Therefore, the coarse material is separated, is fed into the crusher and returned to boot. Helix 9, the rotating gear 7, picks up the rock, for better sliding moistened with water (preferably)about what will viget breed up between the walls of the housing 11 with the slots 5 and nozzles 1 with slots 2, the splines prevent rotation of the breed together with the helix, promoting the breed up by sliding rocks on the plane of the helix 9. Breed moves to the unloading boxes 6 and falls into the chute 8. Constructive performance Transporter is regulated by the specific gravity of the species, diameter, width of the tape helix, the helix pitch distance and number of revolutions is preferably from 20 to 60 rpm Stability and particle size fractions depend on the step width and thickness of the spiral. Reliability (service life) depends on the selection of the housing material, spiral nozzle wear. Internal space 16 of the fixed shaft 10 are oil lines 18 to lubricate the bushing stiffness 3 from the pumping station 17, located at the top or bottom of the conveyor.
Figure 1-2 shows:
1. Slotted nozzle on the axis.
2. Slots slotted nozzles.
3. Bushing stiffness of the spiral.
4. Splined coupling sleeve axis and attachments.
5. The splines of the outer casing.
6. The discharge box.
7. The gearbox.
8. The discharge chute.
9. The spiral.
10. Fixed axis.
12. The welding.
13. Boot Windows.
14. The bearing.
16. The inner space of the fixed axis.
17. The oil station.
18. Oil lines.
19. The top cover shell.
The device is a screw conveyor, before oznaczenie for transporting destroyed lumpy rocks - crushed stone, gravel, broken rock mechanized or drilling-and-blasting - drilling and blasting operations methods, improving the efficiency of the lifting of the transported mass, a smaller " footprint, reducing the number of the employed equipment by eliminating zones of inhibition - sticking to the axis and in the corners of the spiral shaft comprising an outer housing with base, screw spiral, box loading, unloading, discharge chute, reducer, different equipment enclosure internal longitudinal slots parallel to the axis along the length of the hull, inside the housing on a fixed axis assembled slotted nozzles to prevent rotation of the hollow axis and slotted nozzles, the presence of the bearing bushing stiffness spiral, located inside the enclosure to compensate for the forces loaded spiral compression and/or stretching, the presence of a drive gear located at the top, bottom or middle of the body, preferably for a considerable length of the conveyor.
SUBSTANCE: proposed gate conveyor comprises transport flute made up of several interconnected sections with its both ends equipped with drive stations and/or scraper chain tensioning heads 4. Flute every section 19 has scrapper chain upper and lower runs confined by lateral sections and conveyor bottom as well as receiving appliances 18 arranged outside lateral sections for flute section connectors. Conveyor incorporates rotary support 11 for hinged joint with adjacent sections arranged between said connectors and between lateral sections at central lengthwise axis of flute section.
EFFECT: reduced wear and required drive power.
20 cl, 12 dwg
FIELD: machine building.
SUBSTANCE: in disclosed here apron conveyer links of planar chains of intermediate drives are arranged opposite to one another along width of draw member. These links are interconnected with "П"-shaped beams, on upper cross bars of which there are secured straps out of elastic material interacting with external surface of a deck of the planar chain. The planar chains of an upper branch of the pull member are arranged in spans between a driven sprocket and tightener; they interact with supports of sliding or with rollers. Also, cases of bearings of the driven sprocket and tightener and the said supports of the intermediate drive are mounted on the frame; the frame is secured to poles of the conveyer and can be set off in vertical plane relative to them. Magnets are secured on brackets of poles of the conveyer in gaps between pull chains of the planar chain and leaf chains of draw member of the intermediate drive with minimal gaps relative to the deck of the planar chain in the span between the driven sprocket and tightener of the intermediate drive.
EFFECT: increased reliability of operation of apron conveyer with extended length.
5 cl, 3 dwg
SUBSTANCE: invention is intended for low-profile movable conveyor systems to be used mining. Movable conveyor mechanism are interconnected by coupler. Proposed device comprises guide element to be fitted on first movable mechanism end to form guide with two opposite sides and curved to circular arc with center of curvature. Said coupler may swing on said guide to couple said end of first moving mechanism with said second moving mechanism. Coupler comprises rollers to interact with said opposite sides for guide to be retained between said rollers. First movable mechanism can be turned araend vertical axis, passing through the said center of curvature, about second movable mechanism. These two mechanisms are connected via couple device.
EFFECT: reliable coupler for low-profile conveyors.
19 cl, 28 dwg
SUBSTANCE: in complex based on horizontally closed scraper chain a traction element is arranged as double-chain. Scrapers at side external relative to longitudinal axis of conveyor and at the length of contour equal to length L of the conveyor are arranged with stands perpendicularly aligned to scrapers in the form of beams with equal resistance in mutually perpendicular planes. Detachable cutters are fixed on stands, being aligned aside from conveyor longitudinal axis, besides, height of cutter cutting edges and their location along height from upper plane of scrapers are defined based on mathematical ratios. At the same time total height of cutting edges in all cutters is equal to capacity of mineral bed, and location of scrapers with cutters along conveyor length is accepted as stepped with pitch between cutters l=L/n with increasing height of cutters location on scrapers hi to the side opposite to direction of traction element movement. Besides, height b0 of cutting edge in lower cutter is selected on the condition of providing zone cleaning near bed foundation, and height b1 of cutting edge in the first cutter and height h of its location above upper plane of scraper are selected on the condition of providing strength of unit for fixation of stand with cutter to scraper. All scrapers equipped with cutters, at the side opposite to the cutters are equipped with additional vertically aligned stands of the same height, with the possibility of their interaction with vertical boards of panline both at weight-bearing and idle branches. Surfaces of additional stands at the side of panline boards are coated with a layer of antifriction material.
EFFECT: using scraper chain both as transportation device and a mining device.
FIELD: machine building.
SUBSTANCE: in disclosed here apron conveyer links of leaf chains of intermediate drives are arranged opposite to one another along width of pull member. These links are interconnected with "П"-shaped beams, on upper cross bars of which there are secured straps out of elastic material interacting with external surface of a deck of the leaf chain. The leaf chains of an upper branch of the pull member are arranged in spans between a driven sprocket and tightener; they interact with supports of sliding or with rollers. Also, cases of bearings of the driven sprocket and tightener and the said supports of the intermediate drive are mounted on the frame; the frame is secured to poles of the conveyer and can be set off in vertical plane relative to them.
EFFECT: increased reliability of operation of apron conveyer of extended length.
5 cl, 3 dwg
SUBSTANCE: facility consists of chute and auxiliary belt arranged under load bearing belt; said auxiliary belt has side edges projecting beyond borders of load bearing belt. Side edges of the auxiliary belt rest on horizontal damping rollers-supports at a section of load flow receipt; they rest on tilted re-loading rollers-supports at the section of re-loading. The facility is equipped with a frame with a vibrator; re-loading rollers-supports are rigidly fixed on the frame. By means of flexible elements the frame is installed on poles and can be vertically reinstalled.
EFFECT: reduced length and increased reliability.
2 cl, 4 dwg
SUBSTANCE: invention is related to mining industry, namely to charging devices for belt conveyors, intended for transportation of large-sized materials. Rotary-vane feeder of conveyor comprises drum, which consists of two rims joined to each other by means of radial blades, support rollers and tray, which are installed on frame. Besides support rollers are installed in pairs on balancing levers, which are hingedly joined to frame. Radial blades are equipped with breaking beams, which are arranged over blades and are connected to them by means of elastic elements.
EFFECT: increased reliability and durability due to reduction of contact tensions between rims and rollers and reduction of dynamic impact loads at blades.
FIELD: testing equipment.
SUBSTANCE: invention is related to benches for execution of experimental research in laboratory conditions. Device comprises section of vertically oriented pipe fixed on frame, lower cut of which has fixed circular guide with angle profile in cross section with vertical and horizontal shelves. There is upper ring arranged on horizontal shelf with the possibility of rotation in horizontal plane versus this guide. Ring is equipped with identical welded round-link chains attached along its perimetre, lower ends of which are fixed on another lower ring with the possibility of its rotation in horizontal plane and displacement in vertical plane. On upper ring along its perimetre there are alternating rollers installed with the possibility of their rotation in horizontal and vertical axes and with the possibility of rollers interaction accordingly with horizontal and vertical shelves of circular guide. Fixation of lower ends in round-link chains is provided due to their fixation in lower ring with the help of radially oriented rods on its internal surface with the possibility of their location inside links of round-link chains. Length of rods protruding parts is equal to width of round-link chains links. Concentrically versus lower ring there is additional internal ring arranged with the possibility of location between it and lower ring of round-link chains. In openings of additional internal ring there are two pairs of rods arranged diametrically at the right angle to each other with increased length and helical thread at their ends and packing nut with the possibility of its rest against internal ring. Internal ring is made of elastic material and is arranged as split with the possibility of its detachment from rods with helical thread after packing nuts screwing off them. Length of round-link chains is selected so that it is possible to move lower ring up and down along them and fix it in required position, setting distances between upper and lower rings. On lower ring along its perimetre with identical pitch on vertical axes, rollers are installed with the possibility of their interaction with internal cylindrical surface of jacket fixed on frame, as well as two additional diametrically installed rollers on detachable horizontal axes with the possibility of their interaction with vertically oriented guides of I-section in cross section. Guides are hingedly suspended to frame by their upper ends with the possibility of their rotation in plane passing through axes of additional rollers, to the sides from lower ring and fixation of these guides in turned position versus frame. On upper and lower rings there are rims attached with the possibility to install sections of flexible elements in their chutes and with rims enclosure by flexible elements at the angle close to 360 degrees. At the same time one end of each flexible element is fixed on rim, and the second one is equipped with dynamometre and is kinematically joined to drive. Upper ring is equipped with stop accessory, having possibility to fix upper ring versus circular guide. Cylindrical jacket is arranged with vertical slot cut with the possibility to arrange branch of flexible element coming off lower ring. In internal cavity of pipe section there is round plate arranged with gap in horizontal plane with the possibility of replaceable weights location on it and interaction with ore sample placed inside internal section of pipe section. Plate, with the help of flexible element, length of which is equal to height of pipe section, is kinematically connected to frame as point of flexible element attachment to frame is allocated along axis of pipe section symmetry. Under lower ring there is container installed on frame with gate valve placed in its upper part with the possibility of ore pass reception and arrangement in container.
EFFECT: provision of possibility in laboratory conditions to detect power and kinematic characteristics of chain gate for ore pass for conditions of bulk ore outlet from ore pass with versions of rotary ring location - upper or lower ones.
FIELD: testing equipment.
SUBSTANCE: invention is related to benches for execution of experimental research in laboratory conditions. Device comprises section of vertically oriented pipe fixed on frame, lower cut of which has fixed circular guide with angle profile in cross section with vertical and horizontal shelves. There is upper ring arranged on horizontal shelf with the possibility of rotation in horizontal plane versus this guide. Ring is equipped with identical welded round-link chains attached along its perimetre, lower ends of which are fixed on another lower ring with the possibility of its rotation in horizontal plane and displacement in vertical plane. On upper ring along its perimetre there are alternating rollers installed with the possibility of their rotation in horizontal and vertical axes and with the possibility of rollers interaction accordingly with horizontal and vertical shelves of circular guide. On lower ring along its perimetre with identical pitch there are rollers arranged in vertical axes with the possibility of their interaction with internal cylindrical surface of jacket fixed on frame, as well as two additional diametrically installed rollers on detachable horizontal axes with the possibility of their interaction with vertically oriented guides of I-section in cross section. Guides are hingedly suspended to frame by their upper ends with the possibility of their rotation in plane passing through axes of additional rollers, to the sides from lower ring and fixation of these guides in turned position versus frame. On upper and lower rings there are rims attached with the possibility to install sections of flexible elements in their chutes and with rims enclosure by flexible elements at the angle close to 360 degrees. At the same time one end of each flexible element is fixed on rim, and the second one is equipped with dynamometre and is kinematically joined to drive. ,. Upper ring is equipped with stop accessory, having possibility to fix upper ring versus circular guide. Cylindrical jacket is arranged with vertical slot cut with the possibility to arrange branch of flexible element coming off lower ring. At least on three round-link chains in area of their fixation to upper ring there are detectors installed, which register value of longitudinal load over round-link chains, and round-link chains with detectors are arranged along perimetre of upper ring at the same distance from each other. In internal cavity of pipe section there is round plate arranged with gap in horizontal plane with the possibility of replaceable weights location on it and interaction with ore sample placed inside internal section of pipe section. Plate, with the help of flexible element, length of which is equal to height of pipe section, is kinematically connected to frame as point of flexible element attachment to frame is allocated along axis of pipe section symmetry. Under lower ring there is container installed on frame with gate valve placed in its upper part with the possibility of ore pass reception and arrangement in container.
EFFECT: provision of possibility in laboratory conditions to detect power and kinematic characteristics of chain gate for ore pass for conditions of bulk ore outlet from ore pass with versions of rotary ring location - upper or lower ones.
4 cl, 6 dwg
SUBSTANCE: in ore pass rock mass discharge complex, its bottom part at discharge hole area has enlarged diametre with stepped fitting to the smaller diametre upper part and equipped with vertical support beams fixed along its perimetre on a internal surface. A chain gate upper ring fixed on the beams upper sides. The ore pass bottom part dimensions defined with ration. The bottom rings equipped with slides installed on it and located along its external perimetre with the same step, with possibility of their rotation at vertical axis and interaction with a vertically oriented cylindrical form case internal surface. The case fixed on fixed foundation and located with ability to mage chains with a gap. The bottom ring from its bottom side is a rim shaped with possibility to dislocate it inside a steel wire cable channel, which fixed on the rime form one side and on the drum from another side. The drum cinematically connected to the drive equipped with brake. In its initial location, at the gates opened the cable covers the rim along it total circle length. The cable branch going down from the rim located with a possibility to cover from the bottom the drifting block with a possibility to rotate along its axis. The axis equipped with sliders, which located with a possibility of their vertical guides displacement and equipped with a balance. The balance based on the foundation at its initial position. The drum top located over the rim with exceeding of the bottom ring vertical displacement at the ore pass discharge hole shut down. The drum axis horizontal displacement away from the drifting block axis selected from a rough equilibrium of a creeping on and coming off cable branches tightening resultant, for the bottom ring at the initial position and after its displacement to the top at discharged hole shut down with threaded chains. The case equipped with a vertical slot-hole with possibility to locate the cable with in it with gaps, coming of the bottom blocks rim. Slot-hole height assumed to be not smaller than the bottom ring vertical displacement movement.
EFFECT: ore pass big scale rock mass discharge complex height decrease and its simplified design.
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: mining, particularly for underground ore deposit and kimberlite pipe development.
SUBSTANCE: ore pass comprises shaft, loading mouth and sieve. The ore pass shaft is provided with conveyer belts suspended to sieve grate so that distances between adjacent conveyer belts are different and defined by maximal dimensions of rock pieces passing between the belts. Sealed elastic shell is arranged in lower ore pass part. The sieve is installed at α=17° - 45° angle to horizontal plane. Lower conveyer belt ends are provided with weights.
EFFECT: reduced degree of rock grinding, increased service life of ore pass members.
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: transport specially adapted to underground conditions, particularly intermittently-acting mine transport, namely monorail roads for staff and loads transportation.
SUBSTANCE: monorail road includes mine tunnel, arch-shaped metal yielding support and monorail having H-shaped cross-section secured to the yielding support. Wheeled rolling stock moves along the monorail. Horizontal plates are arranged between the supports along monorail and spaced apart a distance exceeding distance between supports. The plate bottoms are fixedly connected to upper monorail shoulder. Panel tops are secured to U-shaped shoe. Each plate with above shoe is pressed to mine tunnel roof by anchors. Insert made of yieldable material is arranged between mine tunnel roof and shoe.
EFFECT: increased support stability due to elimination of reactive stresses appeared in monorail during rolling stock movement in different modes.
3 cl, 4 dwg
FIELD: transport engineering; quarry dump-trucks.
SUBSTANCE: invention relates to devices for lifting and lowering dump-trucks, namely, to complexes for lifting and lower dump-trucks at opencast mining. Proposed device for lifting dump-truck to flank of opencast contains, in addition to lifting line, lowering line parallel to lifting line, both lines being coupled by drive sprockets in head and middle parts of both lines. Each gripping device for gripping and transporting of dump-trucks up and down is made in form twin levers with rollers hinge-connected two leaf-and-roller chains and arranged in between to provide movement of roller along guides. Platform is secured on levers to arranged rear wheels of dumps-truck on lifting line and front wheels, on lowering line. Platform is arranged with clearances over tracks and on lifting line it is provided with curvilinear stop from side of tension sprocket for engagement with rear wheel of dump-truck, and on lowering line it is provided with two stops for arrangement of front wheels of dump-truck between the stops. Tracks on inclined sections are arranged to move front wheels on lifting line and rear wheels on lowering line at horizontal position of dump-trucks. Lips are arranged in opencast and on its flank in zones of entry of dump-trucks on lifting line and lowering line over tension and drive sprockets, and guides for traction chains and rollers of levers are made curvilinear to provide free getting of dump-truck wheels onto tracks.
EFFECT: provisions of lifting of loaded dump-trucks to flank of opencast and simultaneous lowering of empty-trucks into opencast at continuous transportation and reduced to minimum metal usage and energy consumption when carrying out said operation.
3 cl, 6 dwg
FIELD: transport engineering; quarry dump trucks.
SUBSTANCE: invention relates to devices for lifting and lowering dump-trucks when carrying out opencast mining. Proposed device for lifting dump-truck to flank of opencast contains, in addition of lifting line, a lowering line, both lines are parallel, being mechanically coupled by drive sprockets in head and middle parts of both lines. Each device for gripping and transporting of dump-trucks up and down is made in form twin levers with rollers hinge-connected to two leaf-and-roller chains and arranged in between for turning twin levers in vertical plane and moving rollers along guides arranged under guides for running rollers of traction chains. Twin levers are interconnected by platform to arrange front wheels of dump0truck. Platforms are arranged with clearances over tracks and are provided with curvilinear stop on lifting line from side of tension sprocket for engagement with front wheels of dump-truck and are made on lowering line with two stops to arranged front wheels of dump-truck between said stops. Cavities with inclined bottom to said of tension sprocket and wall square to surface of track are arranged on surface of lifting line track at definite step. Each platform of lifting line is furnished with shoe hinge-secured on platform symmetrically to longitudinal axis of lifting line for engagement of free end of shoe with surface of track at normal operation and, at break of traction chains, engagement of free end with wall of cavity, and free end of curvilinear form, with stop of platform.
EFFECT: provision of lifting loaded dump-trucks to flank of opencast and simultaneous lowering of empty-dump trucks into opencast with possibility of holding loaded dump-truck on lifting line in case of breaks of traction chains.
2 cl, 7 dwg