Control method of product transportation in underground mine

FIELD: mining.

SUBSTANCE: control method of delivery of broken-rock pile extracted with getting machines operating at underground mine working at different points of a network of underground gains of the well, by means of transportation devices and bunker units, which are located in the network of underground gains of the well; at that, on the basis of actual data being recorded continuously, there determined is minimum allowable capacity of transportation devices and buffer capacity of bunker units and compared in the computer-aided control unit to current actual production rate and/or to the specified production rate expected for the specified time period and/or to the specified production rate of the associated getting machine, which is extrapolated as per the previous actual data; and at that, at the specified deviations the control unit implements automatic levelling of carrying capacity with transportation devices and bunker units and/or controls the production rate of the getting machine considering the capacity of in-series connected transportation devices and bunker units.

EFFECT: providing maximum and, when possible, constant product available at the transportation point of the mine.

11 cl

 

The invention relates to a method of controlling the delivery of Nabal obtained by operating at an underground working in different places of the network of underground mine workings of the mine, mining machines, through located in the network of underground mine workings mine conveyor means and bunker installations equipped with a transport to the construction of the mine or to the point of transfer raw coal on the earth's surface, such as a warehouse of raw coal.

In accordance with the usual and, thereby, forming in this respect, the prior art method of action planning calculations and operational management of transport facilities and bunkering facilities, arranged for a used in different places of the network of underground mine workings of the mine, mining machines, are planned according to the desired performance of the respective operating means and theoretical flow obtained in each case, a mining machines of Nabal. Such mining machine enterprises underground workings of coal, of which the following is a link as an example, are used in Stopes mining machines or used in insulation drift tunneling machines. When this is enabled between the individual conveying means is AMI, first of all a chain or belt conveyors, hopper installation due to its buffering capacity to ensure the alignment of the threads of transportation and to compensate for short-term peaks of transportation.

Above defined parameters under the current operating conditions of transportation does not meet the maximum possible use of fixed bandwidth transportation of the mine, as the dynamic nature of each mine with changing places Stopes and penetrations, a permanent change in the length of the conveyor means and irregular provision of raw materials, namely coal, requires constant negotiation quantity and the quality of the combination of different working tools chain transport with changing operational conditions. As a rule, short-term, technically it is possible to increase mining productivity mining machinery can not be implemented, if at the same time is not ensured uninterrupted transportation repulsed Nabal to mine. Thus it is necessary to imagine that the flow of material coming from one stope, combined with the flow of the transported material from other Stopes, which depending on Nabal in the treatment of illness is x possible mutual influence with the appropriate restrictions.

Therefore, the basis of the invention is to develop a method specified at the beginning of the type with which it is possible to realize the maximum and, if possible, to ensure consistent product on the conveyor node mines.

The solution of the problem, including preferred options for implementation and improvements of the invention, the content of the claims that follow this description.

In its basic idea, the invention provides a way in which to consistently enabled for each individual mining machine conveyor means and bunker installations in each case on the basis of continuously registering the actual data to determine the minimum available capacity of the conveyor means and the buffer capacity of bunker installations and compare in a computerized control unit with the current actual performance, production, and/or expected for the given time period specified performance production, and/or extrapolated from previous actual data specified performance related mining machines, and when installed deviations of the control unit automatically performs the alignment of the bandwidth between the follower is about included for a variety of mining machines, transport means and bunker facilities through appropriate management of individual transport means and bunker installations given their best performance of the transportation or buffer capacity and/or controls the extraction capacity of the mining machine taking into account available in each case, performance is consistently included transport means and bunker facilities.

Thus, the method of control does not change or adjustment to until throughput is consistently included transport means and bunker installations, taking into account the subsequent coming from other Stopes volumes of Nabal is equal to the current or scheduled for a specific forecast time period specific performance of the mining machine. However, if there is a preset in the control unit variance such that during transportation will be identified for possible reduction of the bandwidth of transportation, the control automatically performs the alignment of bandwidth between the different series for different treatment faces the conveyor means or bunker installations, taking into account present on this mining machine of the actual status or scheduled in this projected time period specified state, what with all the individual on the shackles of the transported material, an optimum amount of transportation.

The invention provides a preferred method to identify emerging problems in the ways of transportation by leading forecasts of the production, and transportation, and in a timely manner to oppose them and, thus, be avoided by suitable, agreed with the entire system of the mine activities of downtime in production and preparatory works. Because in practice, when the enterprise is not always can and will work all located in the network of underground mining of the mine workings treatment the faces, for certain, predefined projected time frame should be determined by the willingness of longwall mining to the production and then to control all the bandwidth capabilities of the conveyor means, including the necessary buffer capacity to transport optimal transportation. A separate conveyor means you can go back to producing means through control of the mines so that they always operated on the subject to determine the limit of performance, and thus to create a "suction" back to mine. However, if there is enough of the transported material, you can improve the actual transport of p is therefore included transport means until while consistently included transporting means reaches its limit. In this regard, the control system detects and prevents critical bottleneck in transportation, the so-called "bottle neck".

Another advantage follows from the fact that the proposed method can provide planning impact on the quality of coal produced due to the fact that depending on the raw material characteristics, such as sulphur, chlorine and/or ash produced in different faces of coal, modify or correct the performance of the extraction of longwall mining, while simultaneously and automatically by the adjustment capacities of series-connected transport means and bunkering facilities is also provided to set the volume and quality were available at the mine for transportation within a specified time interval.

According to one example embodiment of the invention provides that as the actual data for the current performance of the conveyor means to register the speed of the conveyor means, and for the current buffer capacity of bunker installations - speed selection of bins. In the preferred form of implementation, provided that the maximum production is the most important transport means is determined on the basis of the operating characteristics of the drive motors, and/or limit values for the motor current, and/or limit values for the temperature of the engine.

According to the example embodiment of the invention for adjusting want to maintain bandwidth buffer capacity of transport provided by the variable adjustment of its speed.

According to the example embodiment of the invention associated with a pre-set time period specified performance mining mining machine is determined on the basis of the extraction section, which forms the actual excavation of the layer thickness, and rate of advance of the mining machine, according to another alternative form, the implementation also takes into account the state of the corresponding stope and/or data maintenance, such as maintenance intervals and data revision.

In addition, it may be provided that in the definition of the specified performance production involve methane and/or CO content.

Registered evidence of the processes of extraction mining rocks and transportation logically connect to each other in the control unit in a certain way or are in a relationship with each other, and the control unit in response to it by suitable vychislitel the programmes are appropriately manages consistently enabled workers means and/or mining machines or registers (reflect) their available opportunities.

According to the example embodiment of the invention provides that the control unit carries out the performance increase production based in each case is free, not yet exhausted bandwidth transportation consistently enabled transport means.

In addition, it may be provided that perform a visual reflection of the actual data, set data, and implemented by the control unit processes the control.

As an example of such a method should be called planned forecast for chipping area with a temporary change of priority.

In a clearing face "And" work two shifts; the specified transport is 4200 tons/day. By identifying the actual data is recognized that the above specified transportation respective stope "A" is under threat, as available by the time of the request bandwidth cascaded transport means and bunker systems are not quite to the end of the second change, to implement a given transport rate of 4200 tons/day.

To achieve this given transportation to stope "A", the control unit within the automatic evaluation of chances and risks checks whether it is possible to provide Oistamo slaughter "And" temporarily increased p is lowering the ability of the transportation without further operating the treatment faces "In" and/or "C" when possible temporary reduction in allocated bandwidth transportation will not fall below their daily plan, so the result is generally achievable the maximum amount of transportation for longwall mining "A", "b" and "C".

Disclosed in the above description and in the claims, the characteristics of the subject of this documentation may be essential to implementing the invention in its various forms of exercise, both individually and in any combination with each other.

1. The method of controlling the delivery of Nabal obtained by operating at an underground working in different places of the network of underground mine workings of the mine, mining machines, through located in the network of underground mine workings mine conveyor means and bunker installations equipped with a transport to the construction of the mine or to the point of transfer raw coal on the earth's surface,
for sequentially enabled for each individual mining machine conveyor means and bunker installations in each case on the basis of continuously registering the actual data to determine the minimum available capacity of the conveyor means and the buffer capacity of bunker installations and compare skomputeryzowana the control unit with the current actual performance of the production and/or expected for the given time period, given the performance of the extraction and/or extrapolated from previous the actual data of the specified performance related mining machines, and
when installed deviations of the control unit automatically performs the alignment of bandwidth between successively enabled for a variety of mining machines, transport means and bunker facilities through appropriate management of individual transport means and bunker installations, taking into account their maximum performance transportation or buffer capacity and/or
manages the performance of the extraction mining machine taking into account available in each case, performance is consistently included transport means and bunker facilities.

2. The method according to claim 1, in which the actual data for the current performance of the conveyor means to register the speed of the conveyor means, and for the current buffer capacity of bunker installations - speed selection of bins.

3. The method according to claim 1 or 2, in which the maximum capacity of the conveyor means is determined on the basis of the operating characteristics of the drive motors, and/or limit values for the motor current, and/or limit values for the temperature of the engine.

4. The method according to claim 1 or 2, in which the buffer capacity of ispolzuemykh transport means adjust by changing their speed.

5. The method according to claim 1, in which correlated with a pre-set time period specified performance mining mining machine is determined on the basis of the extraction section, which forms the actual excavation of the layer thickness, and rate of advance of the mining machine.

6. The method according to claim 1 or 5, which correlated with a pre-set time period specified performance production and/or extrapolated from actual data set, the performance of the extraction of each individual stope set with the state stope and/or data maintenance, such as maintenance intervals and data revision.

7. The method according to claim 1 or 5, in which the preset performance extraction of each individual stope set with the indicators of the quality of the coal, such as sulfur, chlorine and/or ash.

8. The method according to claim 6, in which the preset performance extraction of each individual stope set with the indicators of the quality of the coal, such as sulfur, chlorine and/or ash.

9. The method according to claim 1 or 5, in which the definition of the specified performance production include methane and/or CO content.

10. The method according to claim 1, in which the power control is the exercise provides a performance increase production based in each case free not yet exhausted bandwidth transportation consistently enabled transport means.

11. The method according to claim 1, wherein performing a visual reflection of the actual data, set data, and implemented by the control unit of the control processes.



 

Same patents:

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.

5 dwg

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

FIELD: mining.

SUBSTANCE: invention refers to mineral resource industry and can be applied when developing ore and non-metal minefields for transporting mineral product under influence of proper weight. Method involves boring of a pilot well till design length is achieved by means of a forward travel reaming bit. After that, it is removed and on the free splined shaft there assembled is a reverse travel reaming bit which consists of telescopic cross-pieces and a centering guide. Then, the pilot well is enlarged with reverse travel till the required shape of "flattened cone" is obtained.

EFFECT: excluding rat-holing of the ascending workings, decreasing energy consumption when crushing mined rock, and creating safe working conditions.

2 dwg

Ore chute gate // 2354600

FIELD: mechanics.

SUBSTANCE: ore chute gate comprises two bottoms attached onto cranks and arranged below the outlet hole to turn in a vertical plane in opposite directions relative to horizontal axles. The latter are fitted outside the branch pipe vertical walls and in parallel to them. Aforesaid cranks are linked up by other two cranks with their free ends linked with the rods of power cylinders arranged horizontally. The latter have are furnished with two rods to turn the cranks of aforesaid linkage in different sides. The cranks of bottoms, in initial position and with the gate opened, are oriented horizontally, while the cranks of the above linkage with the branch pipe walls form a 45 degrees angle. There is a dual-slope baffle arranged inside the branch pipe at the level of axles and in parallel to them to overlap the end face edges of bottoms, in plan, with the gate closed. Every bottom's crank has two pins fixed in cantilever therewith to enter, unobstructed, the openings of counter balance that rests upon the bottom's crank via detachable sleeves fitted on the pins.

EFFECT: higher reliability of gate operation.

5 cl, 7 dwg

FIELD: mining.

SUBSTANCE: invention refers to test benches for experimental investigations in laboratories. The test bench for investigation of parameters of the chain gate for ore chute consists of the section of a vertical oriented tube secured on a frame; a circular guide of angular profile in cross section with vertical and horizontal flanges is fastened on the lower cut of the said tube; the bench also consists of a ring designed to turn in a horizontal plane relative to the guide and equipped with welded round-link chains arranged along the perimeter of the ring at uniform spacing. Lower ends of chains are secured to another ring, which can turn in a horizontal plane and can be set off in a vertical plane. Alternating between them rollers are installed on the upper ring along its perimeter; the rollers are designed to rotate around horizontal and vertical axes and also the rollers interact correspondingly with horizontal and vertical flanges of the circular guide. Further the rollers are assembled on the lower ring along the perimeter of the ring with uniform distance between them and on vertical axes; these rollers are designed to interact with interior cylinder surface of the case secured on a frame; also on the lower ring there are assembled two additional diametrically set rollers on removable horizontal axes, the said rollers interact with vertical oriented guides of double-T profile in cross section pivotally hanged to the frame with their upper ends and able to turn in the plane passing through the axes of the additional rollers sideways from the lower ring; the said guides can be fixed in turned position relative to the frame. In upper and lower rings in grooves of sections of flexible elements there are secured rims; flexible elements envelope the rims at an angle close to 360 degrees. One end of each flexible element is fastened on the rim, while another is equipped with a dynamometer and kinematically connected with a drive. The upper ring is equipped with a catch device, which fixes the upper ring relative to the circular guide. The cylinder case has a vertical slit wherein the branch of the flexible element running from the lower ring is located. A round plate is placed in the interior cavity of the tube section with a gap in a horizontal plane; alternative loads can be arranged on the plate; also this plate interacts with samples of ore located in the interior cavity of the tube section. By means of the flexible element, the length of which is equal to the height of the tube section, the plate is kinematically tied with the frame, where points of flexible element fixture to the frame are arranged along the symmetry axis of the section of the tube. A container with a slide gate in its upper part is installed under the lower ring on the frame; the samples of ore can be received and placed in the container.

EFFECT: invention facilitates laboratory assessment of strength and kinematic characteristics of chain gate for ore chute for conditions of ore lumps chute with various versions of turn ring position: upper and lower one.

2 cl, 1 dwg

FIELD: mining; transporting.

SUBSTANCE: chain gate for ore chute consists of two rings assembled under discharge opening one above another and oriented in horizontal planes. The rings are tied between them with vertically oriented round-link chains secured on the rings with their ends and arranged along the whole perimeter of rings. The upper ring is stationary fastened under the discharge opening, while the lower ring is kinematically connected with a drive and is designed to turn in horizontal plane. The lower ring is equipped with rollers arranged around the exterior perimeter of the ring at uniform distances; the rollers are designed to rotate around vertical axes and interact with interior surface of a vertically oriented case of cylinder shape; the case envelopes chains with a gap. The case is secured on a stationary foundation. The lower ring from the lower side is made in form of a rim, in the groove of which a steel wire cable is inserted; the cable with its one end is secured on the rim, while with its another end it is tied with a drum, which is kinematically connected to the drive equipped with a breaking facility. In the initial position, when the gate is open, the cable envelopes the rim along the whole length of its circumference, while a slack from the rim strand of the cable envelopes a deflecting unit from below; the deflecting unit can rotate around its axis equipped with sliders; the sliders are designed to be set off in vertical guides and are equipped with a counterweight; in its initial position the counterweight is placed on the foundation. The axis of the drum is assembled so that it exceeds the lower ring at a value bigger, than vertical displacement of the lower ring, when the discharge opening of ore chute is shut; the distance in horizontal plane of the axis of the drum from the axis of the deflecting unit is chosen from the condition of approximate equality of resultant force of tension of tight and slack strands of the cable enveloping the deflecting unit for the lower ring in the initial position and after its displacement upward at closing the discharge opening with curled chains. The case is made with a vertical slot wherein the cable slack from the rim of the lower block can be inserted with a gap; the height of the slot is accepted not less, than the travel of vertical displacement of the lower ring.

EFFECT: invention facilitates simplifying design of chain gate and increasing reliability of operation at discharging lumps via discharge opening of ore chutes of increased sizes.

3 dwg

Ore chute gate. // 2347911

FIELD: mining..

SUBSTANCE: invention refers to auxiliary transport equipment, particularly to gates and is designed mainly for shutting off outlet apertures of ore chutes in mines; it can be also implemented for outlet of lump loads from hoppers. The ore chute gate contains two cylinder bottoms installed under an outlet port secured on two cranks; the said bottoms are designed to rotate in vertical plane into opposite directions against horizontal axes. The axes are located on outer sides of vertical walls of a sleeve and parallel to them. The cylinder bottoms of cranks are arranged overhung with the length of arc corresponding to right angle; free ends of bottoms are directed inside the sleeve. Kinematical connection between cranks is made in form of additional cranks secured on axes. Free ends of cranks are connected with rods of two double-piston-rod actuating cylinders oriented horizontally and assembled with gaps relative to two other walls of the sleeve. In their initial position at an open gate the cranks are oriented horizontally, while the additional cranks form the angle of 45 degrees with the walls of the sleeve; the additional cranks are designed to interact after turn into the direction of the sleeve at the angle of 90 degrees with stops secured on the sleeve. A shield with two sloping surfaces is installed inside the sleeve at the level of axes and parallel to them; the said shield overlaps the end flanges of the cylinder bottoms in plane when the gate is closed and is oriented along the axis of sleeve symmetry. Free ends of the shield are arranged in slots of the side walls of the sleeve and are designed to set off the shield in vertical and horizontal planes. The shield is spring loaded towards brackets of the sleeve by means of a compression spring. At the ends of the shield there are installed unbalance vibrators; their axes are parallel to a lengthwise axis of the shield. Dimensions of the gate are chosen considering the following ratio R=0.5B+a, r<0.355[0.5(B-b)+a-c], where R is radius of the crank, m, r is radius of additional crank, m, B is the width of the outlet port of the sleeve, m, a is the distance between the axis and inside surface of the sleeve wall, m, b is total distance between piston rods and piston rods and end walls of the actuating cylinder for final positions of the piston rods, m, c is the height of the piston rod of the actuating cylinder, m. A replaceable component out of wear and shock resistant material is installed on top of the shield with two sloping surfaces.

EFFECT: increased reliability of operation at unloading oversize lumps through outlet port of ore chute, eliminating possibility of jamming of separate lumps of unloaded bulk between cylinder bottoms and supporting them cranks and avoiding doming.

2 cl, 5 dwg

Ore drawing device // 2312810

FIELD: mining, particularly devices to draw and deliver particulate materials (crushed rock) from ore passes in underground mining.

SUBSTANCE: device comprises gutter with driving gate arranged in lower part thereof and defining sector in cross-section. The gate may rotate in vertical plane. The gutter has comb member arranged in bottom part thereof and connected to gate through hinged-lever connection. Lever of the connection is installed in the comb member and may slide in slot by means of roller. Upper comb member part has dovetail partitions.

EFFECT: increased operational reliability, simplified structure, assemblage and maintenance.

2 dwg

FIELD: mining, particularly transport specially adapted to underground conditions.

SUBSTANCE: method involves loading industrial waste in tilting skip unloaded from skip bottom; receiving and unloading industrial waste via hoppers; lowering empty skip at predetermined depth for skip loading with industrial waste from another hopper; transporting skip filled with industrial waste along bore to receiving hopper opened by means of hinges; unloading industrial waste through bottom thereof; filling the skip with mineral; lifting the skip to day surface along the bore.

EFFECT: increased efficiency of skip hoist usage for industrial waste lowering and transportation to goaf.

1 dwg

Ore chute // 2298104

FIELD: mining industry, possible use during underground extraction of mainly ore formations and kimberlite pipes.

SUBSTANCE: ore chute is provided with elastic, closed covers positioned pair-wise along the height of ore chute shaft and filled with compressed air. They are held on armored hermetic cable for feeding compressed air and on rope. Cover pairs adjacent height-wise are positioned transversely to each other. Diameter d of cover is selected from inequality d>0,5D, where D - diameter or transverse diameter of ore chute. Distance between adjacent pairs of covers vertical-wise along height h is calculated from formula h=10+1/dp, where dp - average diameter of rock mass piece, meters.

EFFECT: decreased degree of size reduction of rock mass, decreased costs of major repairs of ore chute, reduced speed of rock mass during transfer through ore chutes of practically any height.

2 dwg

Ore pass // 2272148

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.

5 dwg

Ore chute // 2298104

FIELD: mining industry, possible use during underground extraction of mainly ore formations and kimberlite pipes.

SUBSTANCE: ore chute is provided with elastic, closed covers positioned pair-wise along the height of ore chute shaft and filled with compressed air. They are held on armored hermetic cable for feeding compressed air and on rope. Cover pairs adjacent height-wise are positioned transversely to each other. Diameter d of cover is selected from inequality d>0,5D, where D - diameter or transverse diameter of ore chute. Distance between adjacent pairs of covers vertical-wise along height h is calculated from formula h=10+1/dp, where dp - average diameter of rock mass piece, meters.

EFFECT: decreased degree of size reduction of rock mass, decreased costs of major repairs of ore chute, reduced speed of rock mass during transfer through ore chutes of practically any height.

2 dwg

FIELD: mining, particularly transport specially adapted to underground conditions.

SUBSTANCE: method involves loading industrial waste in tilting skip unloaded from skip bottom; receiving and unloading industrial waste via hoppers; lowering empty skip at predetermined depth for skip loading with industrial waste from another hopper; transporting skip filled with industrial waste along bore to receiving hopper opened by means of hinges; unloading industrial waste through bottom thereof; filling the skip with mineral; lifting the skip to day surface along the bore.

EFFECT: increased efficiency of skip hoist usage for industrial waste lowering and transportation to goaf.

1 dwg

Ore drawing device // 2312810

FIELD: mining, particularly devices to draw and deliver particulate materials (crushed rock) from ore passes in underground mining.

SUBSTANCE: device comprises gutter with driving gate arranged in lower part thereof and defining sector in cross-section. The gate may rotate in vertical plane. The gutter has comb member arranged in bottom part thereof and connected to gate through hinged-lever connection. Lever of the connection is installed in the comb member and may slide in slot by means of roller. Upper comb member part has dovetail partitions.

EFFECT: increased operational reliability, simplified structure, assemblage and maintenance.

2 dwg

Ore chute gate. // 2347911

FIELD: mining..

SUBSTANCE: invention refers to auxiliary transport equipment, particularly to gates and is designed mainly for shutting off outlet apertures of ore chutes in mines; it can be also implemented for outlet of lump loads from hoppers. The ore chute gate contains two cylinder bottoms installed under an outlet port secured on two cranks; the said bottoms are designed to rotate in vertical plane into opposite directions against horizontal axes. The axes are located on outer sides of vertical walls of a sleeve and parallel to them. The cylinder bottoms of cranks are arranged overhung with the length of arc corresponding to right angle; free ends of bottoms are directed inside the sleeve. Kinematical connection between cranks is made in form of additional cranks secured on axes. Free ends of cranks are connected with rods of two double-piston-rod actuating cylinders oriented horizontally and assembled with gaps relative to two other walls of the sleeve. In their initial position at an open gate the cranks are oriented horizontally, while the additional cranks form the angle of 45 degrees with the walls of the sleeve; the additional cranks are designed to interact after turn into the direction of the sleeve at the angle of 90 degrees with stops secured on the sleeve. A shield with two sloping surfaces is installed inside the sleeve at the level of axes and parallel to them; the said shield overlaps the end flanges of the cylinder bottoms in plane when the gate is closed and is oriented along the axis of sleeve symmetry. Free ends of the shield are arranged in slots of the side walls of the sleeve and are designed to set off the shield in vertical and horizontal planes. The shield is spring loaded towards brackets of the sleeve by means of a compression spring. At the ends of the shield there are installed unbalance vibrators; their axes are parallel to a lengthwise axis of the shield. Dimensions of the gate are chosen considering the following ratio R=0.5B+a, r<0.355[0.5(B-b)+a-c], where R is radius of the crank, m, r is radius of additional crank, m, B is the width of the outlet port of the sleeve, m, a is the distance between the axis and inside surface of the sleeve wall, m, b is total distance between piston rods and piston rods and end walls of the actuating cylinder for final positions of the piston rods, m, c is the height of the piston rod of the actuating cylinder, m. A replaceable component out of wear and shock resistant material is installed on top of the shield with two sloping surfaces.

EFFECT: increased reliability of operation at unloading oversize lumps through outlet port of ore chute, eliminating possibility of jamming of separate lumps of unloaded bulk between cylinder bottoms and supporting them cranks and avoiding doming.

2 cl, 5 dwg

FIELD: mining; transporting.

SUBSTANCE: chain gate for ore chute consists of two rings assembled under discharge opening one above another and oriented in horizontal planes. The rings are tied between them with vertically oriented round-link chains secured on the rings with their ends and arranged along the whole perimeter of rings. The upper ring is stationary fastened under the discharge opening, while the lower ring is kinematically connected with a drive and is designed to turn in horizontal plane. The lower ring is equipped with rollers arranged around the exterior perimeter of the ring at uniform distances; the rollers are designed to rotate around vertical axes and interact with interior surface of a vertically oriented case of cylinder shape; the case envelopes chains with a gap. The case is secured on a stationary foundation. The lower ring from the lower side is made in form of a rim, in the groove of which a steel wire cable is inserted; the cable with its one end is secured on the rim, while with its another end it is tied with a drum, which is kinematically connected to the drive equipped with a breaking facility. In the initial position, when the gate is open, the cable envelopes the rim along the whole length of its circumference, while a slack from the rim strand of the cable envelopes a deflecting unit from below; the deflecting unit can rotate around its axis equipped with sliders; the sliders are designed to be set off in vertical guides and are equipped with a counterweight; in its initial position the counterweight is placed on the foundation. The axis of the drum is assembled so that it exceeds the lower ring at a value bigger, than vertical displacement of the lower ring, when the discharge opening of ore chute is shut; the distance in horizontal plane of the axis of the drum from the axis of the deflecting unit is chosen from the condition of approximate equality of resultant force of tension of tight and slack strands of the cable enveloping the deflecting unit for the lower ring in the initial position and after its displacement upward at closing the discharge opening with curled chains. The case is made with a vertical slot wherein the cable slack from the rim of the lower block can be inserted with a gap; the height of the slot is accepted not less, than the travel of vertical displacement of the lower ring.

EFFECT: invention facilitates simplifying design of chain gate and increasing reliability of operation at discharging lumps via discharge opening of ore chutes of increased sizes.

3 dwg

FIELD: mining.

SUBSTANCE: invention refers to test benches for experimental investigations in laboratories. The test bench for investigation of parameters of the chain gate for ore chute consists of the section of a vertical oriented tube secured on a frame; a circular guide of angular profile in cross section with vertical and horizontal flanges is fastened on the lower cut of the said tube; the bench also consists of a ring designed to turn in a horizontal plane relative to the guide and equipped with welded round-link chains arranged along the perimeter of the ring at uniform spacing. Lower ends of chains are secured to another ring, which can turn in a horizontal plane and can be set off in a vertical plane. Alternating between them rollers are installed on the upper ring along its perimeter; the rollers are designed to rotate around horizontal and vertical axes and also the rollers interact correspondingly with horizontal and vertical flanges of the circular guide. Further the rollers are assembled on the lower ring along the perimeter of the ring with uniform distance between them and on vertical axes; these rollers are designed to interact with interior cylinder surface of the case secured on a frame; also on the lower ring there are assembled two additional diametrically set rollers on removable horizontal axes, the said rollers interact with vertical oriented guides of double-T profile in cross section pivotally hanged to the frame with their upper ends and able to turn in the plane passing through the axes of the additional rollers sideways from the lower ring; the said guides can be fixed in turned position relative to the frame. In upper and lower rings in grooves of sections of flexible elements there are secured rims; flexible elements envelope the rims at an angle close to 360 degrees. One end of each flexible element is fastened on the rim, while another is equipped with a dynamometer and kinematically connected with a drive. The upper ring is equipped with a catch device, which fixes the upper ring relative to the circular guide. The cylinder case has a vertical slit wherein the branch of the flexible element running from the lower ring is located. A round plate is placed in the interior cavity of the tube section with a gap in a horizontal plane; alternative loads can be arranged on the plate; also this plate interacts with samples of ore located in the interior cavity of the tube section. By means of the flexible element, the length of which is equal to the height of the tube section, the plate is kinematically tied with the frame, where points of flexible element fixture to the frame are arranged along the symmetry axis of the section of the tube. A container with a slide gate in its upper part is installed under the lower ring on the frame; the samples of ore can be received and placed in the container.

EFFECT: invention facilitates laboratory assessment of strength and kinematic characteristics of chain gate for ore chute for conditions of ore lumps chute with various versions of turn ring position: upper and lower one.

2 cl, 1 dwg

Ore chute gate // 2354600

FIELD: mechanics.

SUBSTANCE: ore chute gate comprises two bottoms attached onto cranks and arranged below the outlet hole to turn in a vertical plane in opposite directions relative to horizontal axles. The latter are fitted outside the branch pipe vertical walls and in parallel to them. Aforesaid cranks are linked up by other two cranks with their free ends linked with the rods of power cylinders arranged horizontally. The latter have are furnished with two rods to turn the cranks of aforesaid linkage in different sides. The cranks of bottoms, in initial position and with the gate opened, are oriented horizontally, while the cranks of the above linkage with the branch pipe walls form a 45 degrees angle. There is a dual-slope baffle arranged inside the branch pipe at the level of axles and in parallel to them to overlap the end face edges of bottoms, in plan, with the gate closed. Every bottom's crank has two pins fixed in cantilever therewith to enter, unobstructed, the openings of counter balance that rests upon the bottom's crank via detachable sleeves fitted on the pins.

EFFECT: higher reliability of gate operation.

5 cl, 7 dwg

FIELD: mining.

SUBSTANCE: invention refers to mineral resource industry and can be applied when developing ore and non-metal minefields for transporting mineral product under influence of proper weight. Method involves boring of a pilot well till design length is achieved by means of a forward travel reaming bit. After that, it is removed and on the free splined shaft there assembled is a reverse travel reaming bit which consists of telescopic cross-pieces and a centering guide. Then, the pilot well is enlarged with reverse travel till the required shape of "flattened cone" is obtained.

EFFECT: excluding rat-holing of the ascending workings, decreasing energy consumption when crushing mined rock, and creating safe working conditions.

2 dwg

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

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