Mechanised face complex with mineral production in large blocks and delivery by escalators

FIELD: mining.

SUBSTANCE: invention relates to mining, in particular mechanised face complexes for underground development of mineral deposited in sloping beds. Mechanised face complex for production of mineral deposited in sloping beds, its development in large blocks and delivery of these blocks by escalators, includes sections of powered support, hydraulic cutting cleaning machine with rolls, providing for its motion, to cut the mineral from bottomhole massif in large blocks with the possibility to cut transverse slots while hydraulic cutting machine is immovable, and to cut back vertical slot by means of continuous motion of hydraulic cutting machine with actuators and hydraulic cutting heads joined via metal tubes, on which they are rigidly fixed, with water supply manifold, outgoing from multipliers that impart ultrahigh pressure to water, hydraulic booster installed with the possibility of its continuous feeding with water and emulsion by means of continuously joined hoses of hydraulic cutting machine to water supply and emulsion manifolds, layer of manifolds for provision of possibility to re-arrange specified manifolds as hydraulic cutting machine moves and changes its direction of movement in process of idle run. Hydraulic cutting machine is arranged with the possibility to cut longitudinal slots parallel to plane of bed, simultaneously to cutting of back vertical slot with application of special hydraulic cutting untis, hydraulic booster is arranged with the possibility to feed water of ultrahigh pressure at actuators providing for cutting of back vertical and longitudinal slots as hydraulic cutting machine moves, and while hydraulic cutting machine is immovable - with the possibility to feed all water to actuators providing for transverse hydraulic cutting, besides lengths of all sections along length of long face of continuous cutting of transverse slots at one side and back vertical and longitudinal slots at the other side are identical. At the same time complex is equipped with suspended platform joined at goaf side of the second escalator to move long face of hydraulic cutting machine along it by means of electric drive connected to driving sprocket engages with track chain arranged in cute also laid in suspension platform, and body of track chain holds all communications providing for operation of hydraulic booster: emulsion discharge and drain manifolds, water manifold and electric cable.

EFFECT: increased efficiency of cleaning face, provision of high safety level, reduced release of gas and dust into atmosphere of long face.

4 cl, 10 dwg

 

The invention relates to mining in the area of underground mining of minerals lying flat seams.

Known treatment mechanized complexes for the development of sloping layers using combine harvesters or planes. It is a complex KM-138, KM-142, KM-143, KM-144 and others (1). The equipment consists of a hydraulic powered roof supports, face conveyors, harvesters or planes. For mechanized roof supports used hydraulic energy emulsion which is produced by the pumping stations, located adjacent to the lava transport development.

The closest is “treatment plant Professor Kaimana” (see RF patent №2323339, C2, IS, registered on April 27, 2008). The fossil is made by cutting out from the bottom hole of the array of large blocks of electric units and gidroliznyi machines. Cutting in the lower and middle slots are introduced metal pallets, made by means of the notch blocks from fossil array, loading on delivering tools, transportation and congestion under the earth and on the surface. After removal from the array before loading into blocks of fossil worn pre chicholina and rope rigging to ensure the integrity of the units and facilities cargo handling.

Been recovered from the CAD cut blocks on the delivery platform is hydroflame or special platforms, established under each shield section. Moving the loaded platforms to transport workings is made along the shipping lanes on metal guides with mine cargo winches, located in the berm near transport workings.

This structural design has many major advantages, therefore, very progressive, allows to achieve a particularly high technical and economic indicators, provides a high level of safety for gas factor and ecology, but it is currently almost impossible to implement in production. The fact that in connection with the full privatization of the mining industry in Russia from the state budget was excluded item to create a new technique. Therefore, the creation of any new product purification equipment is possible by funding private mining companies. However, as practice shows, even very large private companies participate in the financing of creating only single samples of mining equipment, and then only in terms of their modernization and improvement, but not in the creation of entirely new products. For introduction of the new technology adopted for the prototype, it is necessary to develop and manufacture and to start production of the seven brand-new type is in pollution control equipment and two products to be significantly upgraded. This:

1) special wellbore hydraulic powered roof support, providing the opportunity

- move through it to the worked-out space for laying large blocks of fossil;

- move inside the shields blocks fossil to be loaded onto the delivery platform;

- the indiscriminate movement 3 lines metal rails for the movement of the delivery platforms and gidroponkatymoja Assembly;

- accommodation inside the shields of the platforms for loading blocks on fossil delivery platform;

2) special delivery platform capacity up to 100 tons, steadily moving with a load of 6 blocks of fossil weighing 17 tons each on the inclined surface of the lava with a slope of up to 18 degrees with a speed of 1 m/s;

3) electric unit on the basis of 3 electric machines “Ural - 33 for cutting longitudinal slits in the soil layer at the roof of the reservoir and in the middle of its capacity to a depth of 2.2 m along the length of the lava; electric unit height up to 6 m should steadily move with a speed of 2.8 m/min on a sloping soil surface lava with gradients of up to 18 deg;

4) hydroponically unit for extracting blocks fossil from the upper layer and lower down when loading into the delivery platform;

5) the steering hitrorez the th machine for producing ultra high pressure water and feed it to the Executive instruments;

6) hydropolymer to move to a distance of 9 m blocks of fossil weighing up to 17 t and their loading onto the delivery platform;

7) the escalator to be installed on the delivery platform for unloading from transport blocks on production;

8) cylinder front steps for advancing shields and cylinder transverse shifting props 1-St and 2-nd line.

In light of the above, in the absence of centralized R & d funding to create a new treatment techniques to Kaimanu S.A. is not possible the creation of purification of the complex, taken as a prototype. It is necessary to implement new structural development, providing fossil of gently dipping strata of fossil with excavation and transportation of large blocks, which would be based on using the existing serial pollution control equipment by minimizing the re-equipment. The use of a new product only if it was previously well tested and its production has all the documentation. This is a very severe limitation, however, their performance. It is absolutely necessary for the introduction of new technologies in modern conditions the mining industry.

The purpose of the invention is similar to the purpose of the prototype is to create a technology is AI, providing a substantial increase in performance stope compared with an average capacity of Shearer and plow full-mechanized longwall mining, ensuring a high level of security of wastewater treatment works, including gas-oil ratio, the elimination of dust in the air lava dust generated during the extraction of fossil, the elimination of non-motorized heavy labour, ensuring a high technical and economic indicators of production when working Stopes in complicated mining and geological conditions. The goal should be achieved without the creation of new types of pollution control equipment, and only use new way of existing equipment, or conversion of its small number of new parts. In the basis of new production technologies should stay the same concept as in technology-prototype: cutting fossil large blocks using a thin water jet sprays water high pressure delivery on fossil lava and transportation on the adjacent lava transport workings are also large blocks.

The preservation of this concept as fundamental in the development of new technology provides the potential to achieve this goal, because in this case saved ka is the natural enemy of new technical opportunities, on the one hand, maximize the benefits of cutting fossil thin water jet water jet high pressure compared with the cutting array fossil metal cutters mounted on the combine augers, on the other hand, due to minimal destruction of fossil extraction of its blocks.

Thus, the objective of the invention is to achieve the same purpose as in the prototype, but at the expense of other technological solutions that ensure the possibility of introducing new technology into production with the existing realities in the mining industry.

In the new mining complex was first proposed production Podravka the bottom of the plow layer from moving into the cavity of Podravka two coupled frames delivery escalators, which then are delivered cut blocks of fossil transport development.

In the new mining complex does not generate a new shield support, as is done in the prototype, and for fastening lava uses the existing serial shield support having sufficient size enclosed space near the bottom.

In the new mining complex are not used electric unit and two hydrometrie machine for cutting through the cracks, because the cutting of all kinds of cracks obespechivaetsya gidratnoi cleaning machine (abbreviated THUNDER), for what it's supplied with two Executive instruments with multi-jet water-jet cutters.

In the new mining complex for the first time in the world to deliver the extracted fossil on the lava used the escalators, which are based on existing serial scraper conveyors by replacing scrapers on the carrying plate, moving on rollers on the bottom of the pans with traction conveyor chains.

In the new mining complex for the first time used a new way of loading resources on delivering the means by reset under the action of its own weight cut blocks of the lower layer on underneath them two rod previously pridvinutyh escalators. Descent blocks fossil of the upper layer when the loading on the escalators for the first time invited to perform with the use of mobile scat moving on the rollers on the rods escalators.

Also offered new types of equipment:

- gidroliznaja treatment machine in the membership of the steering and two Executive instruments multi-jet water jet cutting thin jets of water high pressure: a first for cutting multiple transverse cracks, the second for simultaneous cutting in the longitudinal plane of the formation of cracks and rear vertical slots; and is strument cutting each slit has several cutting units, each of which has a waterjet cutting head with camera displacement of water with abrasive and two tubes: one for water ultra high pressure from the main water supply, the other for supply of abrasive from the line of feed of the abrasive;

- escalator to transport blocks of fossil generated on the basis of existing serial scraper conveyors by replacing scrapers on the carrying plate, moving on rollers on the bottom of the pans traction chains using existing scraper conveyors, drums, electric drives and control systems.

This provides many advantages, the main of which are the following:

- when developing vysokopetrovsky coal seams create a safe environment at the treatment works, as it excludes the possibility of methane explosions due to the sharp reduction in methanofullerene in a mining face and the adjacent workings, because the coal is not destroyed; in this case the residual methane content of the coal blocks, going outside fresh air, reaches 70%;

- dramatically reduces the dustiness of the atmosphere stope, as liquidated the source of dust is the work of the auger of the combine on the destruction of the array fossil creates cleaner production;

- repeatedly reduced EnergoData the s fossil, because when cutting fossil large blocks of more than 10-fold reduction in the amount of destructible fossil along the lines of cutting;

- repeatedly improve technical and economic performance of production: performance stope, worker productivity by Oistamo slaughter, the cost of sewage treatment works and other; thus, when designing a gentle coal seam with a capacity of 3.2 m design load on the longwall face is 20 tonnes per day, with a thickness of 6 m of 28.6 tonnes per day; in active Stopes now even record load levels less than 1.5-2 times, and averages less than 4-5 times;

- new treatment plant can be used not only at the newly constructed underground mining enterprises fossil, but also on already existing with the use of the existing pollution control equipment.

The invention is illustrated by drawings, each of which shows the following:

Figure 1 - gidroliznaja cleaning machine “the THUNDER - 1”; the cross-cutting vertical slots; view profile: 1 - torch hydroabrasive jet; 2 - cut plane transverse slit; 3 - do not cut through the plane of the slit; 4 - waterjet cutting head; 5 - water supply pipe high pressure (SVD); 6 - tube feeding abrasive to the cutting head; 7 - flexible hose water supply SVD; 8 - hydrosil the tel; 9 is a plane; 10 - escalators; 11 - truck circuit for switching gidratnoi cleaning machine; 12 - the drive sprocket movement of the working platform with power steering; 13 - panel layout the Executive instrument of the transverse hydroretake; 14 - guides move the panel horizontally; 15 - guides move the panel vertically.

Figure 2 - cross-cutting gaps waterjet cutting Executive tool cut-to-length; view in plan: 2 - transverse slit in the bottom hole array fossil; 4 - waterjet cutting heads; 5 - water pipe high pressure (SVD); 6 - tube feeding abrasive; 13 - panel layout the Executive instrument of the transverse hydroretake; 16 - main tube water supply SVD; 17 - main hoses abrasive; 18 - mechanized lifts (left and right) to move vertically of the panel with the Executive instrument of cross cutting: 19 - switching device water supply wells on the Executive instrument of cross cutting when stopped gidratnoi cleaning machine; 20 - valve intake of abrasive material from the feed hopper.

3 - cut blocks fossil from 2-layer bottom-hole array; view profile; hydrorise node-cutting longitudinal slits in the 2nd layer: 4 - waterjet cutting head;5 - the water supply pipe SVD; 6 - tube feeding abrasive; 15 - guides; 21 is a longitudinal slot in the 2-m layer; 22 - rear vertical slit 2-layer; 23 - cut from 2-layer unit of fossil; 24 - mobile scat; 25 - plow; 26 - escalators; 27 - shield support.

Figure 4 is an Executive tool longitudinal and rear slotted hydroretake; section a-a figure 3: 28 - hydrorise site external cutting longitudinal slits; 29 - hydrorise node of the inner cutting longitudinal slits; 30 - hydrorise site external cutting back slit; 31 - hydrorise node of the inner cutting back slit; 32 - highway water supply SVD tool longitudinal and rear slotted cutting; 33 - supply line to the abrasive; 34 - pad placement tool longitudinal and rear slotted cutting.

Figure 5 - cutting the rear vertical slits; hydrorise nodes rear slit cutting; section b-B figure 3: 4 - abrasive hydrorise head; 5 - tube water supply SVD; 6 - hoses abrasive.

6 is a cut and hollow blocks fossil from the bottom of the array 2-layer gidratnoi cleaning machine “the THUNDER-1”; front: 4 - waterjet cutting head transverse hydroretake; 8 - power steering; 13 - panel layout the Executive instrument of the transverse hydroretake; 15 - guides vertical tool is Aracinovo of hydroretake; 23 - cut blocks fossil; 24 - mobile scat for lowering blocks fossil 2-layer; 34 - pad placement tool longitudinal and rear slotted cutting; 35 - Executive hydrorise tool longitudinal and rear slotted cutting; 36 - the Executive instrument of the transverse hydroretake; 37 - guides vertical tool longitudinal and rear hydroretake; 38 - mobile working platform for placement of the steering and Executive instruments; 39 - work surface hinged platform for mobile gidratnoi cleaning machine.

Fig.7 - shipping blocks fossil system coupled escalators along the stope to the transport development; in profile: 23 - delivered units of fossil; 40 - pans; 41 - carrying plate; a 42 - traction chain; 43 - rollers; 44 - supporting channel bar.

Fig - the location and movement of the plates in the working and idle branches escalators; a-a in the drawing 7: 40 - pan; 41 - carrying plate; 46 - the bottom of the pan; 47 - axis.

Fig.9 - the design and arrangement of the rollers in the cargo and single branches of the escalator; a section along B-B in the drawing 7: 40 - pan; 43 - rollers; 46 - the bottom of the pan; 47 - axis.

Figure 10 - transport blocks fossil paired escalators transport mining; in profile and plan: 23 - unit fossil; 40 pan; 41 - carrying plate; a 42 - traction chain; 43 - rollers; 44 - supporting channel bar; 45 - protective Board; 46 - the bottom of the pan; 47 - axis.

Equipment stope includes:

- mechanized hydraulic shoring of production;

- plow installation mass production;

two delivery escalator, preobrazuemyh of scraper conveyors serial production, by replacing scrapers on the carrying plate, moving on rollers on the bottom of the pans with the help of the traction chains;

- gidratnuju treatment machine that is created on the basis of previously tested gidratnoi machines manufactured by the company NPP “Coal” under the direction of Professor Kaimana S.A. Thus, to create this purification of the complex there are no obstacles that currently appear to be insuperable for complex, taken as a prototype in this invention.

The technology of extraction of mineral resources described in this invention, is complex-mechanized, wide and circular. Technological cycle mined consists of two stages: plow undercut of the bottom layer and then cutting it blocks fossil gidratnoi cleaning machine stopped when the plow.

Plow undercut formation

Plow undercut formation is performed with the purpose of is uglublenia frames of both escalators under removable for loop the array fossil. The penetration depth equal to the width of the two escalators. This allows to simplify the loading of cut blocks on fossil delivery escalators. The fossil excavation of the cavity in the lower part of the formation is made by the plow is moving along the created cavity with the traction chain, the plows on the downhole side of the escalator. The chain extends along the bottom and moving the plane takes off shaving fossil. The constant pressure of the plow to the slaughter is carried out by hydraulic cylinders advancing shields. Loading on the escalator produced when fossil is made by the plow in the process of advancing escalators. On the escalator immersed in fossil placers gets on the carrying plate, which is moving on the rollers of the traction chain, take placer fossil transport output.

Cut blocks fossil

Cut blocks fossil is made after complete penetration of both escalators in the hemmed bottom of the cavity. Cut blocks includes the steps of: cutting a transverse cracks up at the full capacity of the reservoir and after burial in the cut slit gitorious nodes perform reverse movement from top to bottom, cutting a longitudinal slit that is parallel to the plane of the seam, cutting back vertically the second slit, shipping escalators blocks to fossil transport development.

Cut blocks starts with the cutting of the transverse cracks, which is always stopped when gidratnoi machine (see figures 1 and 2). Simultaneously several transverse cracks. Figure 2 shows the simultaneous cutting 4 transverse cracks. The distance between cutting through the transverse slots is equal to the block size along the length of the lava. This amount cannot exceed the width of the two transport escalators installed on transport development of a mine site. Since the width of the pans escalators, which are equipped of scraper conveyors equal to 0.7 m, the size of the blocks along the length of the lava is 1.4 m, Then the size of the area over the length of the lava, which is simultaneous cutting transverse slots equal to 1.4 m×4=5,6 m Because the shipping blocks in the lava are also two coupled rods escalators, the size of the blocks fossil in the direction of podvigina lava is also equal to 0.7 m×2=1.4 meters Height of extracted blocks fossil depends on the capacity of the reservoir. The condition of stability of the unit when it is delivered by the lava block height may not exceed twice its size in cross-section, i.e. 2,8 m Therefore, in the seams of up to 3.2 m considering the magnitude of Podravka layer height 0.4 m vein fossil PR is focused on one layer and the height of the blocks is made equal to the capacity of the reservoir, reduced by 0.4 m In the seams of over 3.2 m vein is made in two layers of the same height. So, in the seams of 6 m power developed layers and, consequently, the height of the blocks fossil will be equal to

The cutting of the transverse cracks are due immediately at full capacity of the reservoir. Since the depth of the effective cutting transverse slots in a single pass may not provide the necessary depth of 1.4 m, the cutting of the transverse cracks are produced in two stages: first movement gitorious nodes from the bottom up is cutting to a depth of not less than 0.7 m, then at the height of cutting, equal to the capacity of the reservoir, there is a reversal of movement, thus hydrorise nodes of the Executive instrument of the cross-cutting introduces the entire depth of cut slits 0.7 m and is produced during the reverse movement from top to bottom deepening cracks another 0.7 m

Figure 1 presents the end-cutting a transverse slit on one of the sites. Hydrorise site, consisting of a waterjet cutting head 4, a metal tube 5 water supply SVD and tube feeding abrasive 6, buried in the previously partially cut by the crack and moving from top to bottom. This is evidenced by the position of the triangle which forms the torch hydro-abrasive jet cutting material in the eating: the obtuse angle of the triangle facing down - in the direction of motion. The drawing shows the recessed position of the plane 9 and two delivery escalators 10 in the cavity under the cut transverse slits bottom array fossil. The second escalator from goaf docked hinged platform on which the roller moves the movable working platform located on the steering and Executive instruments. Figure 1 shows the position on the job site directing the 15 vertical displacement of the Executive instrument of the transverse hydroretake. While the panel 13, which itself is a tool of cross hydroretake, along the guides 14 can move in the horizontal direction.

Figure 1 also shows that in order to ensure water supply SVD to the tool transverse cutting of the hydraulic booster 8 in connection with moving the tool vertically and horizontally this submission is made by a flexible sleeve 7. Similarly, by a flexible hose is supplied to the tool and abrasive material from the feed hopper. Figure 1 right shows the position of the chute to accommodate truck chain cable-handling vessel, which are communications to provide steering: highway water supply, emulsion pressure and drain line and electrobabe the ü. The movement of the working platform of the steering is effected by rotation of the drive sprocket 12 when it is engaged with the truck by a chain.

Figure 2 presents fully device hydrorise Executive instrument of the transverse hydroretake. As can be seen from the drawing, the tool includes:

four node waterjet cutting transverse slots, each consisting of a waterjet cutting head 4, the water pipe 5 VDS, tube suction of abrasive 6;

trunk water supply VDS 16;

trunk suction of abrasive 17;

- flexible hose 7 water supply SVD from the switch 19 to highway 16;

- flexible hose for suction of abrasive from the valve 20 of the fence abrasive from the feed hopper to the main hose;

panel layout tool cross-cutting 13;

- mechanized lifts 18 (left and right) to move vertically instrument cross-cutting;

- guides 14 move the panel horizontally (see figure 1);

- guides 15 move the panel vertically (see figure 1).

Cutting transverse slots is a tool transverse hydroretake (see figure 1 and 2) movement gitorious heads 4 upward around developing the capacity of the reservoir, and then down at the same distance. After turning on the water supply ultra-high pressure SVD) on hydrorise head operator power operator hydrolastic cross-cutting includes the actuator lifts 18 (see figure 2), which provides the lift of the panel 13 (see figure 2). Lifting up the lifting chain mechanical movement vertically along the guides with the drive and bypass stars, the panel lifts up hydrorise nodes of cross cutting. Last, creating a waterjet stream 1 (see figure 1), bisected by a transverse slit 2 (see figure 2) in the bottom hole array. After raising the bar on the maximum height capacity of the reservoir is the reverse operation of the actuator, the depth gitorious heads deep into the array in the cut slit on the depth by moving the panel 13 along the horizontal guides, then the panel goes down by the same distance. However due to the work of hydroabrasive jet is the deepening of the transverse slit to the required depth. Thus, the cutting of the transverse cracks are produced in two stages: first, from the bottom up by cutting slits at half the depth, and then from top to bottom with the deepening cracks in the second half of the depth. In the process of hydroretake to each of the four cutting sites is supplied by the water flow pods SVD with flow rates up to 10 l/min and abrasive is fed with a flow rate of up to 1 kg/min

Water jets at the exit of the nozzles inside the cutting heads have a speed of up to 1.8-2 km/sec. through to the measure of mixing in the cutting head with such speed, they create in the supply pipe abrasive powerful ejection force that sucks the abrasive into the mixing chamber. Incoming abrasive acquires the camera offset against water jets speed up to 800 m/s is Obtained odabrana mixture erupts through the nozzle tungsten carbide, installed in the nozzles cutting heads on coal array, creating it a high speed deep cracks.

Figure 3 presents a method for cutting blocks of fossil from 2-layer bottom-hole array, and hydroregime node outer cutting when cutting a longitudinal slit of the 2nd layer. Cut blocks fossil in two layers used in the development of shallow reservoirs with a capacity of more than 3 meters, so as not to cut blocks of excessive height in connection with the inconvenience of transportation. When 2-layer excavation 1st layer is removed with the direct course gidratnoi cleaning machine from traffic generation up, and the 2nd layer of blocks is removed during the reverse course gidratnoi machine from top to bottom.

As a transverse slit cut in 2-layer excavation immediately to the full capacity of the reservoir when the direct course, at flybacks are cutting only the longitudinal slit on the border of the reservoir roof and cutting the rear vertical slots in the upper part of the reservoir. In this regard, the cutting units of the 2nd layer is made when the wrong is revnum moving gidratnoi machine along the lava at its opposite course to the transport development.

Figure 3 presents the position hydrorise node outer cutting tool longitudinal hydroretake that captures the guides 15 vertical movement position of the longitudinal slit 21 of the second layer. Cutting the slit along the length of the lava is necessary to separate the fossil from the rock roof of the reservoir. Figure 3 presents the position of the rear vertical slots 22 of the upper layer, the position gitorious heads 4 nodes of the outer cutting a longitudinal slit and position its pipes water supply VDS 5 and abrasive 6 when cutting a longitudinal slit of the upper layer, the position of the cut block 23 of fossil fuels and the position of the mobile ramp 24 for draining off cut blocks 2-layer on the escalators.

The longitudinal cutting and rear vertical slots is the same as one Executive tool, however, for different slots has the appropriate hydrorise nodes. When cutting blocks of the lower layer or vein in a single layer cutting and rear longitudinal cracks are also sections of equal length and equal to the lengths of the transverse hydroretake. If cutting a transverse slit is made at a stationary position gidratnoi cleaning machine, cutting longitudinal and rear vertical slots is performed only when it is continuous and equal to the Pnom moving. Similarly, if when cutting a transverse slit all the water high pressure generated in the hydraulic booster is transmitted only to the Executive instrument of the transverse hydroretake, when cutting a longitudinal and rear slits all the water SVD is transmitted only to the tool longitudinal and rear slotted hydroretake.

Figure 4 presents the Executive instrument of the longitudinal and rear slotted hydroretake, as well as a device gitorious nodes-cutting longitudinal slits. Cutting and rear longitudinal cracks in the direct course gidratnoi cleaning machine starts at the beginning of each cycle of the plant the Executive instrument of the space transportation tunnel to cut the array fossil. Therefore, the cutting slits begins simultaneous operation of all of the cutting units. Cutting a longitudinal slit is provided with two gitorious sites: outer cutting 28, when gitarijada the head of the tool is on the outside of the longitudinal slit, and hydroregime node internal longitudinal cutting 30 when gitarijada head is inside the longitudinal slit in the part that was cut gitorious hub outer cutting.

When entering the Executive instrument of the longitudinal and rear cutting into the work space location transport and production is beginning starts cutting a longitudinal slit first cutting unit outer cutting, and then the internal node cutting. When this tube water supply SVD and abrasive node internal cutting move on slotted hub outer cutting the first half of the longitudinal slit. Then work becomes hydroabrasive jet node internal cutting a longitudinal slit, which cuts through the second half of the longitudinal slit. All cut a longitudinal slit can be used for navigating her tubes water supply SVD and abrasive to gitorious nodes rear slotted cutting. 4 shows the position of the mains water supply SVD 32 and abrasive 33 to the cutting sites of the tool, a platform 34 placement tool longitudinal and rear slotted cutting.

Figure 4 and 5 shows the location gitorious nodes cutting the rear vertical slit. As can be seen in figure 5 for cutting the rear slit, there are three cutting site: one outer cutting because of its cutting head is outside rear slit, and two internal cut site. As can be seen from the drawing, the torches of Gidrostroy all three gitorious nodes form a single line cutting array fossil. The number gitorious nodes-cutting vertical slits may be different depending on the capacity of the developed layer and number of layers, and depending on the strength of the array.

Because hydrorise uz is s longitudinal cutting should always be ahead of the cutting of the rear vertical slots, then reverse the course of the movement gidratnoi cleaning machine when cutting blocks of the upper layer, the position of the platform 34 must be deployed on the opposite. So this was not needed, because it is technically very difficult, it is advisable to use the Executive instrument of the longitudinal and rear slotted cutting symmetrical positioning gitorious nodes and cut the blocks into two layers: in the direct course of the machine running the left position of the nodes, while the opposite course works right.

Figure 6 presents a front view of the arrangement of the equipment when cutting blocks fossil from the 2nd layer when a reverse course gidratnoi cleaning machine. Shown descent carved block 23 fossil of the upper layer of the mobile ramp 24 coupled to the escalators. When working gidratnoi cleaning machine for cutting blocks of the upper layer are in operation, the hydraulic booster 8 and actuating the tool longitudinal and rear slotted cutting 35, mounted on the platform 34, which occupy the top position, a fixed guide rails vertically 37, the tool transverse hydroretake 36 is disabled and its position is fixed guides vertically 15. Both the Executive and the steering 8 are located on a movable working platform 38, which moves on rollers on RA the eyes surface mounted pad 39.

Moving work site location gidratnoi machine is supported by a drive sprocket 12 (see figure 1) truck circuit 11, which is placed in the trench, also located on the edge of the hinged platform.

During the descent of the blocks of the upper layer on the slope of the latter rests with its rollers on the plate of the stationary escalators and secured with a platform gidratnoi cleaning the machine, so that when moving the ramp moves parallel to the rod delivery escalators and lowers blocks fossil, which quickly go forward, since the speed of movement of the carrying plate far exceeds the speed gidratnoi cleaning machine.

7 shows the position of the block on fossil delivery vehicle lava - two coupled rods escalators. The escalator is equipped on the basis of existing serial scraper conveyors, such as the SOC 271 by replacing scrapers on the carrying plate 41 (see Fig.7), moving on rollers 43 at the bottom of the trough 40 with traction chains 42. From the new parts are only carrying plates, rollers, axles and supporting channel bar. Everything else, what drag conveyors used without modification. Expenses due to replacement of the friction-slip cargo of steel pan bottom is replaced by a friction-rolling of the roller on the bottom.

Calc what you show, when refitting the scraper conveyor SOC 271 length of 200 m in the appropriate escalator performance increases from 12 m/min up to 203 m/min, i.e 17 times. Below for proof calculations.

Load-carrying plate mounted on an axis that when driving under load based on 6 rollers, rolling across the bottom of the pans. Load plate (see figure 10) has a working contact with the cargo area measuring 70 cm in width rod and 11 cm in length, and seven eyes, which plate rests on the axle. The outer diameter of the lugs 40 mm, internal - 30 mm

Axis dimensions: length-700 mm, diameter 20 mm Dimensions of rollers: outer diameter 100 mm, internal - 30 mm, Width 15 mm

1. Determining the weight of the moving parts of the escalator

a) the Rollers. Quantity - 6. Diameter: outer - 100 mm; inner - 30 mm

The volume of the roller body

The weight of one roller

The total weight of the rollers 0,59 kg×6=3.5 kg

b) Axis. The diameter of 20 mm, the Volume axis πR2l=3,14×12smsm=220 cm3=0,22 DM3

Weight axis

in) Plate. The plate thickness 10 mm Dimensions 70 cm×11 cm

The amount of plate 70 cm×11 cm×1 cm=770 cm3

Determine the amount of seven eyelets plate

Total plate 770 cm3+154 cm3=924 cm3=0,92 DM 3

Weight plates

g) of the Traction chain. Weight of 1 meter of track circuits 12 kg/m length of 0.11 m weight of chains is equal to

12 kg/m×0,11 m=1,32 kg

The total weight of the moving parts in a length of 11 cm is equal to

3.5 kg+1.7 kg+7,2 kg+1,32 kg=13.7 kg

The weight of moving parts to 1 M. length

13.7 kg:0,11 m=124 kg/m

The weight of the moving parts of one branch of the escalator equal

124 kg×200 m=24800 kg=24.8 tons

2. Determining the performance of a system of two coupled escalators.

a) the weight of the moving parts of the blank branches of the two escalators

24.8 tons×2=49,6 t

b) the force of resistance to motion of two idle branches of both escalators due to sliding friction steel axes on steel rails pans

0,17×49,6=8,4 t,

where 0,17 - coefficient of friction of steel on steel;

C) resistance force of rolling friction of two cargo branches of both escalators

where to 0.05 cm - coefficient of rolling friction of steel wheels on steel,

5 cm is the radius of the rollers;

Py- weight of coal blocks on the composition of both escalators, kg;

g) the total resistance force to the movement of cargo equal to

8400 kg+0,01Ry+496 kg=8900 kg+0,01 Py

d) the time for the movement of goods on the rod 2 escalators at 1 PM length equal to

110 kW - power drive one escalator;

2 - number of paired escalators;

102 KGM/s kW - ratio conversion kilowatt in KGM/s;

1 m/s - speed traction chains escalators SOC 271.

After computing Py=1350 t

Thus, the system 2 twin escalators able to move along the length of the lava with a speed of 1 m/s cargo of coal blocks weighing 1350 t

Therefore, minute performance delivery is

Because in delivery are two of the escalator, the performance of one is twice less than 405:2=202,5 t/min, which is 17 times higher than the original 12 t/min performance of the scraper conveyor SOC 271, from which he converted. On Fig presents a section a-a 7. This design of load-bearing plates of the escalator. Because when you bomb it to the layer plane escalators also delivered fossil placers, it is necessary that the scattering does not protrude into the space under the plate to prevent tastybaby pan that prevents the movement of the rollers. Therefore, the plate should fit snugly to each other and protrude from the sides of the pans. As can be seen from the drawing, the plates of one of its end - eye - rest on the axle, the other end to the eyelet adjacent plates.

Figure 9 presents a section along B-B Fig.7. This construction and arrangement of the rollers of the escalator. As can be seen from the drawing, in goods the second (upper) branch of the rollers roll along the bottom of the pans themselves are the Foundation for the axes, going through their middle. In idle the lower branches of the axis are the supports for the rollers on which they are in limbo while moving.

Figure 10 presents a system of two coupled escalators to transport blocks on fossil precinct transport development. As can be seen from the drawing, the only difference lies in the construction of the boards on each side of the transport line to prevent the shedding of placer mineral formed from the destruction of blocks during transportation.

Determine the maximum load escalator frames extracted blocks fossil

The minimum time cut from solid blocks of fossil occurs when the extraction of block 2-th layer when developing a reservoir with a capacity of up to 6 m In this case there is no stops cleaning gidratnoi machine and the speed of cutting and rear longitudinal slots maximum and can reach 0.25 m/s Then the time of cutting of one unit is equal to

1.4 m:0.25 m/s=5,6 C.

With the account of the descent of the block on the ramp take this time to 6 C.

Taking into account the weight of the unit of 7.7 tons and its length on the rod 1.4 m download escalator rod fossil equal to 7.7 t:(1.4 m+6 x 1 m/s)=1,05 m/m

With regard to moving parts coupled escalators total weight of the moving load on 1 m = 1050 kg/m +240 kg/m=1300 kg/m

The definition of acceptable length protractor is Cai blocks fossil one paired rod

Motion resistance force due to friction-slip two unmarried branches coupled escalators equal

0,17 x 248 kg/m x l=42,5 kg/l, where l is the length of the rod.

Motion resistance force due to friction-rolling two-Laden branches of the escalators of 0.05 cm

The total motion resistance force equal to

l(42,5 kg/m+13 kg/m)=55,5 kg/l

The time for movement of cargo over a distance of 1 m is determined by the ratio of the magnitude of work on the power of the actuators and at the same time the ratio of the length of the moving speed of the traction chains

From this equality reveals possible length of coaxial escalator rod from the condition of the drive power

The strength of all 4 of the traction chains of two coupled escalators equal

55,5 kg/m×920 m=51 so

The tension of one of the traction chain will be 51 t:4=13,7 t

Given that the breaking strength of the traction chains SOC 271 is not less than 40 tons, determined that the factor of safety traction circuits will be equal to

40 t:13,7 t=2,9.

Determination of the performance of the treatment working on technology Professor Kaimana with fossil excavation blocks and transportation escalators

(a) the capacity of the reservoir 6 m

1. The length of the undercut formation plow

Removing one chip 200 m:1.89 m/s=105

The need is th number of chips 1.43 m:0.1 m=14 shavings

1.89 m/s - velocity of a plane

0.1 m - chip thickness

Time undercut layer 105×14=1460=24 min

2. The duration of cutting and rear longitudinal cracks in the first layer

200 m:0.15 m/s=1330=22 min,

where 0.15 m - speed cutting of pressed coal array in the lower part of the formation.

3. The duration of the cutting transverse slots in the array fossil to a height of 5.6 m from the rod (1-St and 2-nd layer)

the duration of one cross-cutting

2×5.6 m:0.25 m/s=44,8

the number of cross-cutting cycle 200 m:5,6 m=36

the length of the transverse cutting on cycle

44,8 with×36=1660=27 min

4. The length of the longitudinal cutting and rear slots of the upper layer

200 m:0.25 m/s=800 s=13 min

5. Cycle of coal extraction

24 min + 27 min + 22 min + 13 min=86 min=90 min

6. The number of production cycles per shift 360 min:90 min=4 cycle

7. Stocks production in one cycle

200 m×1.43 m×6m×1, 4 t/m3=2400 t

8. Production per shift 2400 t×4 cycles=9600 t

9. Production per day 9600 t×3 shifts=28600 t/d

b) a reservoir thickness of 3.2 m

1. The length of the undercut formation is similar to 24 min

2. The duration of the cutting transverse slots

37×36=22 min

The duration of one cutting 2×2.8 m:0.15 m/s=37

The number of cross-cutting 200 m:5,6 m=36

3. The duration of cutting and rear longitudinal slits

200 m:0,15 MS=22 min

Idle driving gidratnoi machine combined with a plow.

4. Cycle duration 24 min + 22 min + 22 min=68 min

5. The number of production cycles for three production shifts

1080 min:68 min=16 cycles

6. Production from one cycle is equal to 200 m×1.43 m×3.2 m×1.4 tons/m3=1290 t

7. Mining stope per day equal 1290 t×16 cycles=20640 t/d

Bibliography

1. Complex mechanization and automation of wastewater treatment works in the coal mines. Under the General editorship Brabatina. M.: Nedra, 1977, 415 S.

1. Cleaning mechanized complex for extraction lying flat seams fossil, its development of large blocks and delivery of these blocks escalators, including sections of powered roof supports, gidratnuju clean machine with rollers that ensure its movement, to cut fossil from the bottom of the array of large blocks, with the possibility of cutting the transverse cracks with a stationary gidratnoi machine and cutting the rear vertical slit through continuous movement gidratnoi machine with the Executive bodies and hydroregime heads, connected via a metal tube on which they are rigidly fixed, with a power line running from the multipliers, giving to the water ultrahigh-pressure, power steering, mounted with the possibility egenerative power water and emulsion through a permanently attached sleeves gidratnoi machine to power and emulsion highways, paver roads to allow relaying mentioned highways when driving gidratnoi machine and change the direction of its movement at idle driving, characterized in that gidroliznaja the machine is made with the possibility of cutting longitudinal slits, parallel to the plane of the layer, simultaneously with the cutting of the rear vertical cracks with use of special gitorious nodes, power steering made with water ultrahigh pressure on Executive bodies responsible for cutting the rear vertical and longitudinal cracks when moving gidratnoi machine, and with a stationary gidratnoi car - with a possibility of all the water on Executive bodies responsible for cross hidromasaje, and length all along the length of the lava continuous cutting transverse slots on one side and the rear vertical and longitudinal cracks on the other side of the same, with the docked complex is equipped with goaf side of the second escalator hinged platform to move it along the length of the lava gidratnoi machine through the actuator connected to the drive sprocket meshing with truck chain, located in the gutter, paved also mounted on the Playground, and in the case truck chains are all communication and, provide steering: emulsion pressure and drain line, water line and electric cable.

2. The complex according to claim 1, characterized in that the complex consists of a plow comprising a plow with the location of the plow chain with downhole side, two drives plow, hydraulic tables and two escalators collected on the basis of serial scraper conveyors, in which instead of scrapers mounted load-carrying plate mounted for movement on rollers, rolling across the bottom of the pans.

3. The complex according to claim 1, characterized in that the delivery units on fossil lava and precinct transport development complex includes a system of coupled escalators, together providing the necessary reception ability of frames to display blocks of minerals under the action of their own weight and move the blocks, while carrying plate frames escalators made with the possibility of moving on rollers on pans ensure delivery of units to transport fossil generation, and for lowering blocks fossil from the upper layer, the complex is equipped mobile scat installed with the possibility of movement on the rollers on the rods of both escalators, being associated with stationary gidratnoi machine.

4. To the complex according to claim 1, characterized in that for fixing the lava complex includes a serial mechanized roof supports with sufficient bestieee space with downhole side to accommodate two twin escalators.



 

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