Method of remote coal extraction at edge seams in open-cast and device to this end
SUBSTANCE: this process comprises open coal extraction by cut chambers, production of barrier posts and backfilling of said chambers. Drilling hardware represents a milling driller located on day surface with drilling tool inclination of 45-90 degrees from vertical line. Note here that coal removal from blocks is performed with the help of hydraulic drawing device at liquid-to-solid ratio equal to 1:3. There, coal pulp is directed to coal dewatering to 7-8 % while effluents are forced to desliming and circulation.
EFFECT: higher efficiency and safety of edge seams development.
6 cl, 3 dwg
The claimed group of inventions relates to mining and can be used in the development of coal deposits on the layers of the abrupt occurrence of an outdoor way, mainly in the coal fields, which are at the final stage of the open development and already spent career fields.
The known method snegoborbe the development of thin seams of coal deposits by drilling-out of coal snegoborbe dishwasher, with an open surface, and its granting are using a dragline (see U.S. patent No. 4589700, IPC CL. ES 41/31, AS 47/00, AS 41/26 from 20.05.1986 G.).
The disadvantages of this method is low productivity, significant losses of minerals, of limited use for the development of coal deposits, as well as the opportunity to use this method only as a subsidiary process.
Also known a method of extraction of mineral reserves with the help of developers with thin seams sectional conveyor installation and multi screw conveyor (see patent WO 95/02746, IPC. CL. IS 41/28 dated 12 July 2004).
The disadvantage of this method is that it has limited scope, as it involves the mining of the mineral only after reaching the open cast mining of the limiting factor sun�Shi and only low-power, single, horizontal or flat seams.
Also known a method and apparatus construction in the soil insulation of walls by tunnelling gap milling and recesses developed soil material from the cracks on the ground surface, fill the resulting gap reference suspension for supporting and maintaining the gap, the filing of the solidifying suspension, which displaces the supporting suspension (see FRG patent No. 19530827 C2, IPC, CL E02D 5/18 from 22.09.1995).
The disadvantage of this method and device is highly specialized focus, providing only the construction of earthworks, namely the construction of soil insulation of walls, as well as the lack of technological parameters and modes for the application of this method and device technologies for the development of steeply dipping coal seams, which prevents cost-effectively and safely apply them for coal mining on steep seams of occurrence in open cast mining.
Closest to the claimed invention is a method of mining from the pit, trenches or other excavations by opencast mining and extraction of minerals mining and cameras, leaving between them a safety pillars and the subsequent laying of the cameras that are implemented with the use�m complex open-underground mining (see RF patent №2247241, IPC CL. ES 41/00 on 20.06.2003).
The disadvantage of this method is that it does not provide the possibility of mining steep seams, and also requires the preservation of the considerable size of the safety pillars between excavation chambers formed by open-underground mining, which leads to loss of the mineral or the need to shift from an open and open-underground mining of seams, carried out with complex open-underground mining, the extraction of minerals by underground mining. This significantly reduces the economic efficiency of field development.
Closest to the claimed invention is a device and method for the construction of soil insulation of walls, which includes a frame, one or more on the frame below the lower disk cutters, one or more additional disk mills, located on top of the frame made mirror-symmetrical relative to a plane passing perpendicular to the feed direction, the dispensing of the fluid intended to flow into the gap of the bonding liquid (see patent RU 2304197 C2, IPC, CL E02D 5/20, E02F 5/08 dated 08.08.2005).
The disadvantage of this device and method is that they are intended for use at about�covered the mining of steeply dipping coal seams by the extraction of coal at the surface, as used in the construction, namely the creation of engineering structures - walls". In addition, this device and method are characterized by low productivity, lack of special equipment for drilling-out of coal mining and cameras, to a depth of 100 m and more, as well as his raise on the surface and warehousing, all of which disadvantages does not allow an economically and technically effective to make the open mining of coal deposits.
The technical result of the invention is to improve the efficiency and safety of mining of steeply dipping coal seams through the use of remote coal mining in open-pit mining and milling and drilling tools with hidrolygica coal, as well as the application of technological schemes for coal dewatering and recycling of process water in water reuse.
The invention consists in that in the method of remote coal mining on steep seams of occurrence in surface mining, including open development and dredging of coal mining and cameras, creating a barrier pillars, the Foundation excavation of the chambers as a drilling device, used milling drilling machine, placed on the surface, with a goal�VKE coal seam angle milling drilling tool from 45 to 90° from the vertical, the coal extraction from coal-mining cameras are using the device gidrofiziki coal at a ratio of solid and liquid phases is equal to 1:3, after which the coal slurry is fed to the dewatering of coal up to 7-8%, and waste water for desliming and turnover.
The method also lies in the fact that coal extraction from coal-mining unit is made by drilling excavation cameras size 1.2 x 2.2-3.5 m down dip of the stratum, at a depth of 100 m and more.
In addition, the way to harden the barrier pillar is the creation of injection slits by contour penetration cracks milling with a size of 0.2×1.5 m, with coal extraction, injection and filling of cracks with a hardening composition, for example a composite mixture in the form of coal sludge, resulting from the clarification of sewage, water, Portland cement grade 300, overburden, with the ratio equal 3:2:1,2:5.
Drilling device remote coal mining on steep seams of occurrence in open cast mining, containing milling/mixing mill made mirror-symmetrical relative to a plane passing perpendicular to the feed direction, and rotating in opposite directions or in one direction, the dispensing of fluid, a rotation drive, a telescopic drill rod, is further provided with a Ustra�STW gidrofiziki coal on the surface, consisting of a conveyor Elevator-bucket for hoisting coal, and a chamber for collection of coal pulp, put over a milling/mixing mills, made in the form of two adjacent drum cutters.
While on the surface of the milling drum provides the lining with the attached single milling milling teeth and ribbons, made of wear-resistant material.
In addition, the device of gidrofiziki of coal may be made in the form of a pump installed in the base of the excavation chamber, connected with reinforced slurry pipeline for collection and recovery of coal slurry on the surface.
In contrast to the known proposed method allows to increase the efficiency of coal mining on steep seams of occurrence in open cast mining and environmental safety of mining operations through the use of milling drilling machine in combination with the technology of coal dewatering and the use of waste process water for recycling water supply of this technology.
This result is achieved by Stripping the coal seam or seams on stretch open cast mining and the installation of strata milling drilling machine that allows for drilling coal excavation cameras size 1.2 x 2.2-3.5 m, at an angle of 45 to 90° from the vertical, relative�Uo axis stretch of the reservoir, and to a depth of 100 m and more.
With the aim of increasing productivity and continuity of the technological process of coal extraction from coal-mining chambers on the day surface, lead to the use of the device of gidrofiziki coal at a ratio of solid and liquid phases T:W=1:3, after which the coal slurry is fed to the dewatering of coal up to 7-8%, and waste water removal, and then recycled back into the process.
In addition, to improve the durability and performance milling drilling tool on the surface of the milling drum mounted liner, which is fixed to a single milling milling teeth and tape, made of wear-resistant material.
Also to enhance the security of surface mining carries out pre-hardening of the walls of the excavation chamber along its perimeter. This is achieved by maintaining barrier pillar width of 1.0 m and the creation of the injection slit milling with a size of 0.2×1.5 m with excavation of coal injecting and filling the cracks with a hardening composition. For example, the composite mixture in the form of coal sludge, resulting from the clarification of sewage, water, Portland cement grade 300, overburden, with the ratio equal 3:2:1,2:5.
Thus the above method and device for its implementation allow�Ute significantly increase the efficiency of coal production and reduce economic costs for the production and reclamation, followed by open and underground mining of coal deposits, and to increase safety in mining coal and protecting the environment. This is achieved through the use of remote method of mining coal in open cast mining and milling drilling rig with hidrolygica coal on the surface, as well as technological activities, such as dewatering and desliming coal wastewater for water recycling.
Fig.1 shows a diagram of the technology of remote coal mining on steep seams of occurrence in surface mining: (a) top view, b) cross section a-A; Fig.2 - diagram of the device for the implementation of the proposed method: (a) side view, b) cross section B-B; Fig.3 is a schematic flow diagram of remote coal mining for the implementation of the proposed method.
Technology of remote coal mining on steep seams of occurrence in surface mining includes open pit edges 1, coal bed 2, an extraction chamber 3, barrier pillar 4, the injection slit 5, the spent extraction chamber 6, the filling material 7, winning crack 8, pump station 9, the drying device 10, the conveyor belt 11, a storage facility for coal 12, the slum 13, milling drilling machine 14, milling drilling tool 15, electrop�water 16, milling drums 17, the device for supplying water 18, reinforced hose 19, the device gidrofiziki coal 20, a chamber for intake of coal pulp 21, conveyor Elevator-bucket 22, the wheel with the toothed rims 23, the lining 24, single milling teeth 25, the milling of the ribbon 26, disc cutters 27, drive pulley 28, the transmission circuit 29, the rod 30, the crane suspension 31, crane rope 32, the additional conveyor section Elevator-buckets 33, the receiving hopper 34.
Method of remote coal mining on steep seams of occurrence in open cast mining is carried out as follows. Open cast mining pre-Stripping of the coal seam 2 along strike, which is a horizontal flat area. Then on a lined pad set milling drilling machine 14, which is developing coal seam 2 consecutive drilling production chambers 8 size 1.2 x 2.2-3.5 m at an angle of 45 to 90° from the vertical, relative to the axis of stretch of the coal seam (a) 2, and a depth of 100 m and more. To increase the depth of the development of a mining chamber 8 are used the additional section of the conveyor Elevator-bucket 33.
For drilling-out of coal milling drilling tool 15, consisting of the actuator 16 is used to rotate the milling drum 17, and device gidrofiziki coal 2, device for supplying water 18, reinforced hydrochloro 19, device gidrofiziki coal 20, consisting of a chamber for collection of coal pulp 21 and conveyor Elevator-bucket 22, under the action of the two milling drum 17 rotating in opposite directions, is buried in the coal seam 2. Moreover, a milling drum 17 rotating in the direction to the device for supplying water 18. The process of drilling-out of coal is produced by disc cutter guides 27 mounted on the ends of the milling drum 17, is covered with a lining 24 with single milling teeth 25 and milling belt teeth 26, is made of wear-resistant material.
Thus for the formation of coal slurry through a device for supplying water 18, which includes reinforced hose 19, the space between two milling drums 17 enters the water, which, forming a coal slurry, fills the chamber for collection of coal pulp 21. Then the coal slurry at a ratio of solid and liquid phases T:W=1:3 from the chamber for collection of coal pulp 21 by means of conveyor Elevator-bucket 22 rises to the surface, where it emptied into the receiving hopper 34. Next, the coal slurry enters the dewatering device 10 with receipt of oversize and undersize products. Oversize product moisture content of 7-8% are supplied to the conveyor belt 11 and razgruzitsya storage facility for coal 12. Undersize product in the form of wastewater containing slimy particles, enters the slurry tank 13, where the result of natural deposition, and then processing the clarified water surfactants there is waste water. The clarified process water from the slurry tank 13 by the pump station 9 are sent to the process, and the accumulated sludge after dehydration in spectual.
To increase the security of reference of the remote coal mining on steep seams of occurrence in open cast mining between mining blocks creates a barrier pillar 4 width 1.0 m, barrier and performs a safety function, which is pre-hardened before the mining chamber 3. Hardening of the walls of an excavation unit 3 around the perimeter is achieved by creating the injection slit 5 in the sinking milling drilling tool 15 with a size of 0.2-1.5 m, with coal extraction and filling of the injection slits of the reinforcing composition. For example, the composite mixture in the form of coal sludge, resulting from the clarification of sewage, water, Portland cement grade 300, overburden, with the ratio equal 3:2:1,2:5.
As a result of the use of barrier pillar 4 excludes the ingress of backfill material 7, such as overburden, to accommodate�about waste excavation block 6, in the space of reference mining, and also prevents the collapse of the rocks hanging and lying sides of the goaf.
Thus, the above method of remote coal mining on steep seams of occurrence in open cast mining and the device for its implementation allow to increase considerably the efficiency of coal mining, to reduce economic costs for works and reclamation, and to improve the safety and environmental protection.
1. Method of remote coal mining on steep seams of occurrence in surface mining, including open development and dredging of coal mining and cameras, creating a barrier pillars, the Foundation excavation of the chambers, characterized in that the drilling device used milling drilling machine, placed on the surface, angle milling drilling tool from 45 to 90° from vertical, with the excavation of coal from a coal-mining blocks are a device of gidrofiziki coal at a ratio of solid and liquid phases is equal to 1:3, after which the coal slurry is fed to the dewatering of coal up to 7-8%, and waste water - for desliming and turnover.
2. A method according to claim 1, characterized in that coal extraction from coal mining block is a sequence of Weberian�m excavation cameras size 1.2 x 2.2-3.5 m, by down-dip to a depth of 100 m and more.
3. A method according to claim 1, characterized in that the establishment of the injecting of cracks is carried out by contour penetration cracks milling with a size of 0.2×1.5 m, with coal extraction, injection and filling of cracks with a hardening composition, for example a composite mixture in the form of coal sludge, resulting from the clarification of sewage, water, Portland cement grade 300, overburden, with the ratio equal 3:2:1,2:5.
4. Device for the extraction of coal containing milling/mixing mill made mirror-symmetrical relative to a plane passing perpendicular to the feed direction, and rotating in opposite directions or in one direction, the device for fluid supply, a rotation drive, a telescopic drill rod, characterized in that it further provided with a device for gidrofiziki coal on the surface, consisting of a conveyor Elevator-bucket for hoisting coal, and a chamber for collection of coal pulp, put over a milling/mixing mills, made in the form of two adjacent drum cutters.
5. The device according to claim 4, characterized in that on the surface of the milling drum provides the lining with the attached single milling milling teeth and ribbons, made of wear-resistant material.
6. The device according to claim 4, characterized in that the device gidrofiziki coal is made in the form of a pump installed in the base of the excavation chamber, connected with reinforced slurry pipeline for collection and recovery of coal slurry on the surface.
SUBSTANCE: method comprises the cleaning of coal bed or beds by striking by open mining operations and installation on a bed of a drilling unit, for coal drilling-out at an angle from 60° to 90°, with reference to the bed strike axis, and to the depth 100 meters and deeper. To increase a productivity of coal extraction, and also to decrease of load on the cutting working body in case of emergencies, a bucket auger is formed by two parts, namely the cutting working body and a lift cylindrical ladle connected to each other by the coupling device. Inside the bucket auger an auger-drill element for loading of minerals into the lifting cylindrical ladle is installed.
EFFECT: improvement of efficiency of development of steeply pitching coal beds and environmental safety of mining operations.
7 cl, 3 dwg
FIELD: oil and gas industry.
SUBSTANCE: invention relates to open development of mineral fields, more exactly to open development of the long steep dipping fields with internal dumping. Method when borrow pit length is divided to turns, from them first turn is developed to design depth with external dumping, and second turn is developed using internal dumping, locating overburden to the developed space of the first turn with common formation of the dumping tiers with progress of mining towards end through full depth. At that the work zone through height is divided to two parts, bottom part opening and development are performed by longitudinal inclined layers with lifting 20-25% towards end using the wheel loaders and vehicles able to move over these steep grades, height of the bottom part is determined as per mathematical equation. The top part of the work zone is developed using the transverse development system and sliding access tracks, their width is accepted based on the condition of their use for dumping of the exploded rocks upon their widening and simultaneous assurance of two-way passage of vehicles ensuring the cargo movement between the bottom and top shelves, the longitudinal inclined layers of the bottom part of the work zone are developed by separate formed in series from top to bottom near-vertical-horizontal layers with maximum height, determined considering trajectory of the loader bucket movement, during development of each successive near-vertical-horizontal layer the rocks are preliminary loosened, the loader excavates it and loaded in vehicles located at horizontal sites at minimum distance to the mine working.
EFFECT: technical result is decreased additional sides spacing to arrange the opening mine working, and reduced distance of overburden transportation from the work zone of the borrow pit to the internal dumping.
FIELD: mining operations.
SUBSTANCE: method comprises the construction of three artificial elements: impervious screen, a protective berm, a protective coating. And the impervious screen is created by drilling of inclined wells of large diameter in the winter period from the upper site of the ledge nonworking edge side most affected to thawing, parallel to the slope surface at its full height followed by filling them with ice rock stones, chilled fresh water and freezing with natural cold, and the protective berm is erected over the mouth parts of the wells, starting from the upper edge of the ledge of the tapered section of calculated height, using layered freezing of overburden rocks, which in the summer period, including the surface of the ledge slope, to prevent thawing, covered with the protective coating, which is made in the form of removable flexible moisture-heat- and light-reflecting mat, removed with the onset of winter, the thickness of which is determined based on the mathematics.
EFFECT: prevention of thawing of frozen rocks of non-working ledge edges of pits.
SUBSTANCE: method comprises preliminary loosening of a block of rocks and half-rocks by simultaneous massive drilling holes in it with the maximum density across the whole area of the block prepared for extraction, using a multibar drilling unit, followed by the extraction of rock by machine ways destroying the rock solid blocks between the holes.
EFFECT: complete elimination of harmful effects on the environment and the operational staff at drilling and blasting loosening rocks.
SUBSTANCE: invention relates to the method of open mining of mineral deposits with creation of a dump. The method includes separation of career space by zones, height and pit perimeter, cutting of ledges and horizons on which overburden and mining works with removal of rocks by truck or by rail into dumps and via ore chutes to reloading points are conducted, and dumps are built up using the cyclic action facilities. Meanwhile a convex form of a working edge is formed, gradually being fitted into the edge differentiated by steepness on a final contour which is built up in view of minimum disturbance of walls of slopes and a edge according to the technology with minimum consumption of explosives (E) with removal and dumping of rock into a main dump located near a zone of overburden works outside a contour of a steep edge of a pit of the 1st phase; initially temporary dumps are used with self-transportation of rocks outside a pit, and with their partial re excavation, provide the minimum shoulder of tramming of rocks and ore using the crushing reloading points and conveyors from inclined planes on the top horizons to the steep and vertical at completion of a pit. And with deepening of mining operations the overburden zone is divided into two sites and rock is moved by combined transport from two sides into a dump under construction parallel to a edge slope in view of deformation of its separate sites, and rock dumping on a dump after crushing is carried out by line transport facilities using the mobile console, the minimum shoulder of tramming of rock and ore and costs of development of mountain weight on the first and the subsequent stages (turns) are ensured, and the first two layers of a dump are dumped according to cyclic and line TsPT technologies using motor transport or loaders (at re-excavation of rocks) that provides stability and robustness of the dump front according the developed technology of dumping, at the final stage the third layer is dumped, and the fourth layer of dump if necessary, according to its calculated volume and height and limit depth of a pit.
EFFECT: improvement of efficiency of field development during construction of a dump with large volume and height at decrease of costs of stripping and improvement of safety of dumping.
SUBSTANCE: after performance of drilling and blasting operations in an overburden bench during layer-by-layer excavation of the blasted rock to an extended bench and a final blade circuit on the formation roof of the mineral deposit within excavation heading throughout the length of the slab there left is a layer of the rock with negative temperature. This allows developing a zone of stable freezing, warming it up and strengthening it by action of solar insolation during development of the upper part of the breakdown. The rest rock layer is excavated to a final blade circuit after disposal of the upper part of breakdown throughout the length of the excavation slab.
EFFECT: reduction of influence of repeated freezing on productivity of a drag line and provision of its stable operation during excavation of blasted rocks of an overburden slab.
3 tbl, 2 dwg
SUBSTANCE: method involves positioning of an automated complex for deep development relative to the working face considering the direction of ore bodies settings. Control of mine rock parameters is performed by means of control sensors of physical and mechanical characteristics of mine rocks for adjustment of a mine rock cutting force considering rotation speed of a working element and movement speed of the working element in a vertical plane throughout the cutting depth and cutting direction by means of hydromechanisms of telescopic retraction and a turning mechanism of the head section. Width of capture of the ore body plane in a horizontal direction is provided by means of the positioning mechanism of the complex relative to guides; with that, information on circuits of destructed mine rock is sent from control sensors of mine rock circuits to a system control unit.
EFFECT: increasing productivity, improving reliability and enlarging technological efficiency of destruction of rocks of different strength and coherence degree by controlling a cutting force in a zone of processing and formation in a surface layer of the processed massif of destruction zones considering strength characteristics of rock.
2 cl, 3 dwg
SUBSTANCE: method involves driving of permanent and working trenches, installation of downhole and main transport pipelines, extraction of a mineral deposit with wedge-shaped producing blocks. Driving of a working trench is performed by means of a parallel cut throughout the length of an open-pit field, and direction of a mine work front line is offset in a circumferential direction, the centre of which is a stationary rotary station of transport pipelines with radius R equal to maximum width of excavation cut to observe parallelism of the axis of transport pipelines to the mine work front line. The formed angle αi between radius R and the line of the main transport pipelines is determined from a mathematical expression.
EFFECT: improving efficiency of a fan development system.
SUBSTANCE: method involves general-purpose robot-aided mobile complexes for production, extraction, preparation and processing of mineral raw material and concentrates, a unit of automated control of operation of a mining mill, a technical system for advancing, current and prompt reception of mining and geological information. Fully automated reception of mining and geological information is performed based on build-up of a digital model using a software, cyclic-flow destruction of hard rocks and half-rocks by means of a safe shallow blast-hole drill-and-fire system and flow-through soft rocks - by means of a mechanical method, adaptive and deep differentiated separate mechanised extraction and loading of mineral and rock mass of different categories, types and grades, through-type separate ore preparation in all technological operations, selective primary benefication of mineral raw material using an adaptive gravitational technology and a physical and chemical combined technology, separate processing of concentrates at the final stage using metallurgical methods.
EFFECT: improving development efficiency of small ore and non-metallic deposits of gold, lead, stannum and other mineral deposits.
SUBSTANCE: method involves construction of annular transport ramps of opposite direction with single-lane traffic of dump trucks docking in turning platforms, reloading points, construction of open pit sides with triple projections at an inclination angle of 60÷75°, which are separated with safety berms of required width, formation in some part of the open pit field of one of ore bodies of transport ramp (TR) with width providing for two-lane traffic of dump trucks and adjacent to turning platforms, production of ore for both ore bodies by means of a drill-and-fire method so that pillars are left in the open pit sides; delivery of ore to a factory; stripping - to external dumps, construction of underground mine workings and a water drain system; the modification stage involves reconstruction of the eastern side of the open pit (VRT) with partial processing of its pillars and transshipment of dead rocks into an internal dump, change of some part of single-lane transport ramp along the eastern side for a steeply inclined one, transportation of ore from lower horizons of the open pit with articulated dump trucks (ADT) to the transhipment area, transhipment into large dump trucks for delivery to the factory, and creation of a rock cushion at the open pit bottom. Besides, first, from the lower turning platform in the worked-out area of the western side of the open pit (ZRT) there dumped is the main ramp, thus providing transport communication throughout the depth of the open pit; at the open pit side reconstruction stage, a two-lane ramp is in-series formed with projections with a vertical slope and berms of minimum width and rebuilt into a ramp with an increased inclination in opposite direction; a new dump ramp is formed from the turning platform in the south-western part of the open pit; water drainage is relocated to an inter-pipe zone; TR of opposite direction with single-lane traffic along the western side is put out; TR with an increased slope is constructed from the upper turning platform in the north-western part of the open pit; ZRT pillars are mined out; the new dump ramp is enlarged, and loading and transportation of some part of ore is performed from it at mining-out of ZRT pillars by equipment with remote control (RC) to a transhipment point; another part of the ore is transported to VRT bottom, thus creating an ore cushion, and after ZRT pillars are additionally mined out to technologically practical depth, VRT pillars are broken out onto the ore cushion, thus putting out the transport ramp.
EFFECT: improving efficiency and completeness of development of a mineral deposit by an open-pit mining method.
9 cl, 4 dwg
FIELD: process engineering.
SUBSTANCE: set of invention relates to cutter of trench milling device. Proposed milling cutter comprises main body comprises main drum-shape body with at least one circular row of mounts located at body outer periphery to carry soil cutters. Both drill bits with, in fact, point working teeth and cutting teeth with, in fact, linear cutting edges are arranged at least in one circular row. Ring made of sheet is welded to outer circular periphery of said main body whereat drill bits and cutting teeth of one circular row are located. Proposed cutter comprises the frame whereat several cutters are arranged in pairs. In compliance with proposed method, said cutter in introduced in soil to cut it by above described cutters.
EFFECT: efficient soil cutting without replacement of cutters.
14 cl, 4 dwg
FIELD: process engineering.
SUBSTANCE: invention relates to agricultural machinery, particularly, to in-soil rotary milling and cutting of water absorbing slots in soils. This device comprises two vertical milling chisel ploughs (2). The latter are engaged with common drive. Milling chisel plough (2) is equipped with circular milling chisel plough (5). Circular milling chisel plough (5) has external cutting edges (11). The latter are made along its outer part on side surfaces, in turns at the right and left sides. Soil intake container (12) is arranged ahead of cutting edges (11). Said soil intake container (12) doubles as the recess of engagement of the driving gear of drive (15) on outer side of circular milling chisel plough (5). Said soil intake container (12) is provided with hole (13). The latter is directed perpendicular to the surface of circular milling chisel plough 5 and through its depth.
EFFECT: better cleaning of said soil intake container, lower traction resistance and higher reliability.
SUBSTANCE: work tool of bucket wheel excavator includes work wheel in the form of a drum mounted on platform rotating around horizontal axis, with buckets consisting of cutting edges, side and rear walls; the buckets are attached to the work wheel on joints by a centrepoint suspension scheme; balance beams are identical in structure and process properties, feature spring-elastic extension pads adjoining the drum and are pressed to the internal side of the drum by a rolled semiflexible band.
EFFECT: expanded process usability of work tool of bucket wheel excavator.
2 cl, 1 dwg
SUBSTANCE: rotor-thrower comprises a bearing disc with radial blades-throwers, the housing-casing with the inlet and outlet windows, the hydraulic actuator of working elements. The bearing disc is made with installed along its perimetre double-edged chipper knives with their stepwise arrangement in height t over the disc surface and with different distance from its center, in the disc center around the axis the mouldboards with a curved surface are fixed, connected to the flat throwers radially located on the disc, made with the stepped notches on the periphery, the outlet of the housing-casing is provided with a conical valve with a branch pipe with an ejector mounted on it, as well as an air tube and a clamp of quick-detachable hose of woodchip-slurry pipeline, and on the housing-casing in front of the inlet window the machine of excavatory device is mounted adjustment-movably with cramp-shaped passive blades of root extractors-root pruners with disc splitters of soil and roots in a layer of silt.
EFFECT: improvement of quality of cleaning, the possibility of grinding into woodchips of roots and stumps of bushes at the bottom of the drainage channel, separate removal of solid objects hidden in a layer of silt or slurry containing woodchips, grass-soil mass.
3 cl, 3 dwg
SUBSTANCE: working element of a rotor trench excavator includes rotor rings, buckets, teeth at buckets with normal and shorter cantilever towards a working face and arranged along significantly thinned stage-staggered schemes. Cutting perimeters are installed between neighbouring buckets and have teeth with cantilever towards the working face equal to the cantilever of normal teeth at buckets, and their cutting edges are aligned in lines of bucket shorter teeth passage along the working face. At the same time, number of teeth at cutting perimeters is reduced twice, compared to number of passage lines of the bucket shorter teeth at the working face. Teeth arrangement at two neighbouring perimeters has periodical displacement to the left and to the right relative to the longitudinal plane of the rotor rings at the distance between the neighbouring passage lines of the bucket shorter teeth at the working face. Besides, cutting perimeters are fixed hingedly to the rotor rings and have L-shaped levers with free bucket shorter teeth at the working face. Besides, cutting perimeters are fixed hingedly to the rotor rings and have L-shaped levers, free ends of which rest against springs installed on brackets into the rotor rings, and also rollers in areas of levers bend with the possibility of their contact with the limiting rotor shield, on rings of which there are supports installed for double-arm levers.
EFFECT: increased efficiency of rotor trench excavators operation in solid and frozen soils.
FIELD: machine building.
SUBSTANCE: ground-cutting machine consists of pendulum frame with cutter and of running gear coupled with pendulum frame by means of hinge. The pendulum frame with the cutter is also linked to a crankshaft positioned on the running gear.
EFFECT: automatic effect of cutter on compacted ground with specified frequency of impacts.
SUBSTANCE: working equipment of hydraulic excavator consists of swivel platform, of connected thereto two-beam cantilever boom with lifting-lowering mechanism, of disk cutter with rotation mechanism and of pump station. The mechanism of boom lifting-lowering includes a pole pivotally connected to the swivel platform and the boom, a hydro-cylinder of pole lifting and telescopic hydro-cylinder pivotally tied with the swivel platform and the boom. Also the boom is made telescopic and includes a root, intermediate and head sections with a telescopic mechanism of their extending and telescopic pipelines. The head section of the boom is assembled of three parts: a boom head, middle section and extended section and is designed to double fold in vertical plane by means of two hydro-mechanisms. Notably, working equipment includes an additional disk cutter mounted on the head of the boom head section; the cutters are equipped with separate rotation mechanisms and arranged one above the other. Rotation centre of the upper disk cutter is set off forward downstream sections extension, while width of the upper disk cutter exceeds that one of the lower disk cutter. Support skies are hinged at the head of the head section of the boom on both sides of the upper disk cutter.
EFFECT: increased efficiency of loosening quarry faces of up to 15 m height and frozen to 2-2,2 m depth, cutting chaps both at slopes and at working platforms, decreased weight of working equipment, increased steadiness and manoeuvrability of excavator at travel.
2 cl, 6 dwg
FIELD: mechanical engineering.
SUBSTANCE: invention relates to mechanical engineering field and provided for trenching in melted soil of the I-IV category, and also in frozen grounds for engineering services, oil- and gas pipelines, drainage and can be used at contouring of foundation pis, taking out and at other works. Excavator trench rotor-type includes drive, rotor, control assembly 2 and moving mechanism. Rotor is implemented in the form of drum with tooth 14. Additionally in rotor drum it is fixed disk 6 for rotation to it transmission by means of steering circle 7, connected to rotation drive of rotor. Moving mechanism is implemented in the form of propulsive agent 8, including connected to steering circle 7 platform and three single-type double-sided hydraulic actuators, each of which contains fixed on platform casing 9 and piston 11 with rod 10, at both butts of which there are fixed hydraulic rams 12 with bearing thorned platforms 13. And drive includes pump-adjusting gear, connected by pipelines with tank 5 for working fluid and mentioned above hydraulic units. Additionally control assembly is located on platform or flooring 4 and allows manhole for entry into control assembly.
EFFECT: downsizing and productivity improvement.
SUBSTANCE: facility for milling and/or drilling rock or similar materials consists of spindle drum assembled on support and intended to rotate around axis; several rotating cutter spindles are installed in drum eccentric to axis of drum. On their ends projecting out of the spindle drum the cutter spindles bear working tools. At least two of cutter spindles are actuated from a common reducing drive, which has driven tooth gears stationary arranged on the cutter spindles and a common drive element interacting with driven tooth gears. Also the drive element and the spindle drum are assembled so as to provide their rotation relative to each other.
EFFECT: processing hard materials at high efficiency of milling, increased operation life of tools, high operational reliability and compactness.
55 cl, 22 dwg
SUBSTANCE: invention refers to mining, particularly to facilities for excavation and transfer of rock mass and can be implemented for strip mining of minerals without their preliminary opening from deposits of horizontal or flat pitch. The working body of a quarry excavator includes at least one rotor with buckets equipped with static teeth secured on a working edge of the bucket and with impact teeth connected with impact devices which are assembled on the front wall of the bucket. The rotor is equipped with reflecting lips hinged on its rim and designed to turn by means of levers during bucket unloading; also one end of the lever is jointed to the reflecting lip, while the other is equipped with a roller traveling in guides made in form of an oval wheel rigidly fixed on a rotor shaft.
EFFECT: upgraded efficiency of excavator operation.
2 cl, 2 dwg
FIELD: open-cast mining.
SUBSTANCE: invention relates to continuous-operation self-propelled device designed for checking possibility of mining mineral materials and taking out interlayers whose properties, from point of view of their breaking and further transportation, are of vital importance at open cast mining. Proposed device has running gear, frame with drive unit and control panel and cutting drum arranged before running gear and equipped with cutting tools. Said drum is installed in supports of carrying frame for rotation around horizontal axis and is made for adjusting position in height by means of cylinder installed between frames and carrying frame. Crawler-type running gear is used. Cutting drum passes over entire width of device, and it is furnished with guide partitions and guard shield, is functionally connected with chute-like housing and is made for stepless change of speed of rotation, speed of feed and adjusting transverse tilting from one of two sides relative to working platform owing to vertical adjustment of position of one of hinge joints connection device frame and carrying frame which is made in form of forked rotary cantilever.
EFFECT: improved operating capabilities of device.
5 cl, 5 dwg