Tunnelling machine actuator

FIELD: mining.

SUBSTANCE: tunnelling machine actuator comprises a boom, a dispensing reducer and two breaking-loading crowns, axes of which are parallel to the longitudinal axis of the boom, the direction of their rotation is mutually opposite, and the body of each breaking-loading crowns is arranged in the form of a truncated conical surface combining a smaller base at the side of the bottomhole with a larger base at the side of the dispensing reducer. On the outer surfaces of bodies of breaking-loading crowns there are trihedral prisms installed with disc tools as capable of covering trajectories of movement and reversing rotation directions.

EFFECT: higher efficiency of mine tunnelling by combination of breaking, grinding and loading processes in a tunnelling actuator.

6 cl, 11 dwg

 

The invention relates to the mining industry, namely to the Executive bodies of roadheaders selective action, and is intended for carrying out mining for coal and mixed faces with hard and abrasive rock layers and separate inclusions, keeping in structural heterogeneous environment of decay products, including oversized, the cause of which are the processes of pressing and sudden outbursts of coal, rock and gas in the wellbore spaces underground mine workings.

Known Executive body of the digging machine (A.S. 901542 the USSR, MCL.3E21D 9/10, publ. 30.01.82, bull. No. 4), including kinematically linked group of three crowns, one radial and two axial. The disadvantage of this design is the presence of bevel gear and stepped undercut by a large increment of penetration.

The closest technical solution to the claimed is the Executive body of the digging machine (A.S. 520439 the USSR, MCL.2E21C 27/24, publ. 05.07.76, bull. No. 25), which includes a bolt, a rotary head, a distributing gear and work the body in the form of two fender crowns, the axis of which is parallel to the longitudinal axis of the boom. The drawbacks of such Executive body are low efficiency of the process is s destruction, loading and crushing hard rock inclusions, oversized and layers in coal seams, the complex process of positional orientation of the crowns with the deterioration of the stability of the digging machine.

The technical result of the proposed technical solution is to increase the efficiency of the mine workings by combining the processes of destruction, crushing and loading in the Executive body of the digging machine.

This technical result is achieved by the fact that the Executive body of the digging machine, comprising a shaft, transfer box and two destructive-loading crown, the axis of which is parallel to the longitudinal axis of the boom, the direction of their rotation are mutually opposite, and the case of each of the destructive-loading crowns made in the form of a truncated conical surface, uniting smaller base side of the face with a large base from transfer gearbox, according to the invention, on external surfaces of buildings destructive-loading crowns installed with the possibility of overlapping paths of movement and reversing the direction of rotation of a triangular prism with the disk tools.

This technical result is also achieved by the fact that the outer surfaces destructive-loading crowns made in the form of truncated m is orogrande pyramids, on each face of which is attached a triangular prism with the disk tools with the possibility of installation, dismantling and various schemes set widthC.

This technical result is also achieved by the fact that one of the faces of triangular prisms on destructive-loading crowns from a face attached disk tool on the axis of the trunnion, and the other two faces form a dihedral angle φ with the common edge, facing toward the transfer case gear and intersect the axis destructive-loading crown at an acute angle β in the direction of the face plane and the plane passing through the common edge and the axis destructive-loading crowns, symmetrically placed inside the dihedral angle φ.

This technical result is achieved by the fact that the transfer box is made with a kinematic link and the spacing tM.R.on-axis destructive-loading crowns, in which a triangular prism with the disk tools are located in areas with rolling mates with the formation of the labyrinth clearances in the axial Δ1and radial Δ2directions with variable areas of cross sections of maximum Δ1(max), Δ2(max)to the minimum Δ1(min), Δ2(min)in the direction of the large grounds buildings destructive-loading crowns.

Specified technical is the second result is achieved by the fact that that triangular prisms on each of the destructive-loading crowns placed on schemes set so that the faces that share an edge with the sides of the dihedral angle φ are helical surfaces with discontinuities spirals, forming both right and left blade screws in a single device.

This technical result is also achieved by the fact that the mount axis trunnion rotary tool each of the triangular prisms placed on the inner wall connecting the two faces that share an edge with the sides of the dihedral angle φ.

The invention is illustrated by drawings, where figure 1 shows a General view of the Executive body; figure 2 is a top view along arrow a in figure 1; figure 3 - General view of the destructive-loading crown in the form of a truncated conical surface; figure 4 is a side view along arrow B in figure 3; figure 5 is a General view of the destructive-loading crown in the form of a truncated multi-sided pyramid with the fixing points of the triangular prisms; figure 6 is a section along G-g of figure 5 with the attachment disk tool inside of a triangular prism; figure 7 is a side view along arrow b In figure 1 with the image of the crushing process, combined with the destruction and loading of the rock mass; Fig - education vertical shear with the surface formation face width InC; figure 9 is a view along arrow D on Fig ofdepicting circuit driving Executive body in the processing of slaughter tunneling generation circuit of rectangular shape; figure 10 is a side view along arrow E in figure 9 when making soil surface generation; figure 11. diagram, transportation and loading of products of destruction on the receiving table loader digging machine.

The Executive body of the digging machine (1, 2) are executed in two variants and contains the arrow 1, which has two destructive-loading crowns 2 (1-5), kinematically connected to each other via a transfer box 3.

In the first embodiment, the Executive body of the digging machine case each of the destructive-loading crowns 2 made in the form of a truncated conical surface (Fig.1-4), comprising a lower base 4 from the side of the face with a large base 5 from the side of the transfer gear 3 with the length of the generatrix of equal width InC(figure 3).

In the second embodiment, the Executive body of the digging machine case each of the destructive-loading crowns 2 made in the form of a truncated multi-sided pyramid (figure 5), comprising a lower base 4 from the side of the face with a large base 5 from the side of the transfer gear 3 with the length of the generatrix of equal width InC.

In the first embodiment, the Executive body of the digging machine in width InC(Fig.1-4) on the outer surfaces to the each of the destructive-loading crowns 2 rigidly fixed triangular prism 6 without the possibility of mounting and Dismounting immutable versions of the schemas in the collection. Two faces 7 and 8 of each of the triangular prisms 6 are loading and transporting share an edge 9. The line through the edge 9, intersects the longitudinal axis destructive-loading crown 2 at an acute angle β (Fig 1, 3) in the direction of the transfer gear 3, and a plane passing through the edge 9 and the axis destructive-loading crowns 2 (2), symmetrically placed inside the dihedral angle φ (figure 3)formed by the faces 7 and 8 of the triangular prism 6. The third facet of 10 triangular prisms 6 facing toward the bottom and has a through hole for a console placement downhole side of the axis of the trunnion 11. Between the faces 7 and 10 intersect the rib 12, and the edges 8 and 10 along the edge 13. This triangular prism 6 is placed on the forming surfaces destructive-loading crowns 2 schemes set, on which the ribs 12 form a helical line breaks spiral right blade of the auger, and the ribs 13 form a helix with gaps left spiral blade of the auger, for example a single, dvuhaktnoy, transactnow or chetyrekhsektornoi spirals.

On each axis of the trunnion 11 (3) freely planted disk tool 14, cantilever mounted in front of the face 10. Mounting of the axis of the trunnion 11 is placed inside of a triangular prism 6 and is rigidly attached strap-lock 15 to the wall 16 by bolts 17. On both sides of the disk tool 14 ustanovlenytakie end rings 18, acting thrust bearings receiving the axial load at fracture.

In both versions of the Executive body of the digging machine on outer surfaces of each of the faces 10 of triangular prisms 6 and enclosures destructive-loading crowns 2 set the spray nozzles 19 (Fig.3-6). The support base of triangular prisms 6 or rigidly welded to the truncated conical surface of the shell destructive-loading crowns 2 (1-4) or in the form of flat plates 20 with the mounting-lugs 21 (figure 5, 6) for fastening to the base surfaces of the forming faces 22.

In the second embodiment, the Executive body of the digging machine on each of the faces 22 (figure 5) exterior surfaces of buildings destructive-loading crowns 2 attached triangular prism 6 with the disk tools 14 with the possibility of Assembly, disassembly and changeable options schemes set widthC.

In both versions of the Executive body of the digging machine disk tools 14 form a rapid departure L3(3) from the surface of the smaller base 4 of the housing destructive-loading crown 2, made in the form of a truncated conical surface or a truncated multi-sided pyramid (figure 5).

In the second embodiment, the grant is part of the body of the digging machine destructive-loading crown 2 (figure 5) includes a triangular prism 6 with the disk tools 14 and nozzles irrigation 19, installed on the surfaces of the forming faces 22 with the ribs 23 on the whole width of the In3. Each face 22 destructive-loading crowns 2 (figure 5) contains two rows of lugs 24, which are rigidly connected with the mounting-lugs 21 substructures in the form of a flat plate 20 (figure 5, 6) of triangular prisms 6 by means of pins 25, providing a schema of a set of lines for the destruction of a width3and screw surfaces with discontinuities spirals in the form of blade screws. Pins 25 end flange is placed in the caps-bushings 26, protruding from the surfaces of the faces 22 destructive-loading crowns 2 (figure 5) from big reason 5 facing the transfer gearbox 3 (1, 2), and secured by nuts 27. A similar bracket may be placed and from smaller bases 4 (figure 5), addressed to the slaughter.

In both versions of the Executive body of the digging machine transfer box 3 (1, 2) contains the kinematic relationship with the spacing tM.R.(2, 7) on-axis destructive-loading crowns 2 (2, 5). On external surfaces destructive-loading crowns 2 are located in areas of rolling kinematic pair triangular prism 6 with the disk tools 14. It provides education labyrinth clearances in the axial Δ1(figure 2) and radial the m Δ 2(7) directions with variable areas of cross sections of maximum Δ1(max), Δ2(max)to the minimum Δ1(max), Δ2(max)in the direction of the big reasons 5 buildings destructive-loading crowns 2.

Disk tools 14 (7)located in the same plane of rotation, which is placed in width In3with a certain step tp(figure 3), which is a step arrangement of the planes of rotation for kinematically and mechanically linked triangular prisms 6. In extreme planes of rotation destructive-loading crowns 2 (1, 2, 3, 5, 7) from big reason 5 the trajectory of the triangular prisms 6 form the area of the geometric and kinematic pair along the chord length Lx(Fig.7).

The claimed device works as follows (Fig.7-11). In both versions of the Executive body of the digging machine is responsible for carrying out production cycle with the transverse motion of the destructive-loading crowns 2 widthCremovable layer with a vertically staggered or horizontally-step movement of the boom 1. Before each work cycle are initially cut to width InCdestructive-loading crowns 2 according to the scheme depicted in Fig. In the process the notch on the bolt 1 is moved in the direction of 1' from the roof framing to the ground with a gradual telescopic elongation in the direction of arrow K from the In C=0 to the desired value InCand after that make lifting and turning movement of the boom 1 in the direction of arrow L from the soil to the roof framing in the direction of movement 2'.

In both versions of the Executive body of the digging machine ahead of departure L3(3) disk tool 14 from the surface of the smaller base 4 of the housing destructive-loading crown 2 contributes to ensuring the smooth notches on the desired width InC(Fig, 9) tilt-and-telescoping manner in all kinematic modes of operation destructive loading of 2 crowns. This characterizes the end of a ledge, and the beginning stages of step-vertical pattern of the remaining cross-sectional area of the face in the given circuit output, for example of rectangular shape (Fig.9). The trajectory of the boom 1 with destructive-loading crown 2 is in the direction of travel 1'-12' (Fig.9). On the directions of travel 1'-11' (Fig.9) is dominated by the processes of destruction and crushing of oversized 28 (7), and the direction of movement 12' (Fig.9) is dominated by the processes of loading (figure 10, 11) and the crushing of oversized 28 (7) with the destruction of the ledges-scallops 29 (Fig.9) on the soil surface generation.

In the process of destruction of vertically-speed movement direction of Meiko anatom space formed zelick in the form of a protrusion height h In(figure 2). Thus the maximum height of the protrusion hIndepends on center-to-center distance tM.R.destructive-loading crowns 2 (2, 5, 7) and labyrinth clearances in the axial Δ1(figure 2) and radial Δ2(7) directions, the diameters of the fracture surfaces in width InCdefined by the departure of ribs disk tools 14 and surfaces of the triangular prism 6 through the relevant steps of the destruction of tp(figure 3). The degree of structurally-kinematic coupling mutual trajectory of triangular prisms 6 with the disk tools 14 corresponds to the chord LX(Fig.7), which limits the height of protrusion hInTelicka and the surface of the destroyed face in microanatomy space (figure 2).

Structurally-kinematic pair (2, 7) triangular prisms 6 with the disk tools 14 along the cutting lines within the width InC(3) ensures the efficient crushing of oversized 28 (7) from the maximum value in the area of the smaller bases 4 destructive-loading crowns 2 to minimum values in the zone of the big reasons 5.

If destructive-loading crown 2 is placed at the soil production, the process of crushing (7) is combined with loading and transportation (figures 9, 10, 11) of products of destruction of 30 relevant what ranami 7 or 8 (figure 3, 6, 11) triangular prisms 6 from the bottom to the receiving table 31 loader digging machine (figure 10). The maximum width of the front loading is provided by rotation of the destructive-loading crowns 2 in the directions of ω1and ω2(7,11)that generates an internal TransportRule loading corridor in the parameter range pupillary distance tM.R.destructive-loading crowns 2 (2, 7, 11).

Thus, edges 12 with sides 7 of triangular prisms 6 are designed for the transportation and loading of products of destruction 30 on artificial double conical surfaces of the transport and loading chutes 32 (figure 10, 11) during the rotation of destructive-loading crowns 2 clockwise, and the ribs 13 with sides 8 provide transportation and loading of products of destruction of 30 (figure 10, 11) during the rotation of destructive-loading crowns 2 counterclockwise.

The minimum width of front loading is provided in case the directions of rotations ω1' and ω2' (7, 11) destructive-loading crowns 2, as TransportRule loading capacity will have the outer surface of only one of them with the movements of the boom 1 from Board to Board production (Fig.9). Changing directions of mutual rotation destructive-loading crowns 2 with ω1and ω2for ω1' and ω2' (7, 11) in the can in case of oversized 28 (7) on the soil working or in the case of extraction of oversized 28 with an exposed surface machined face (Fig.9).

When placing the soil surface generation and loading the remaining products of the destruction of 30 (figure 10), it is necessary to carry out a reciprocating cycle destructive-loading crowns 2 from position I to position II by the arrow K by the telescopic mechanism of adjustement arrows 1 joint reciprocating rotary swinging movements of the boom 1 in a vertical plane in the direction of arrow L with synchronization, providing the direction of the total displacement in the direction of arrow M in the plane, allowing to combine the surface destruction, destructive-loading crowns 2 flat surface soils develop over the entire width of the range of rotation of the boom 1 in a horizontal plane from one side generation to another (Fig.9).

In the process of notches and processing of slaughter (Fig, 9) are combined processes: breaking, crushing of oversized 28 (7), and loading of products of destruction of 30 (figure 10, 11). Destructive-loading crown 2 can have the directions of rotation ω1, ω2(7) in a downward mode operation in case of loading operations and crushing of oversized 28 on soil development and ω1', ω2' in an ascending mode with split upper flow of oversized 28.

After the final Stripping the soil of debris 30 across the entire width of the horizontal framing (figure 10) were the ical harvester moves forward on the face, the arrow 1 reduces telescopic razdvinet on the value ofCand the next working cycle of the processing of slaughter repeats (Fig.7-11).

Thus, both the execution of the Executive body of the digging machine allow to increase the efficiency for mining by combining the processes of destruction of the face, crushing of oversized and loading of products of destruction.

1. The Executive body of the digging machine, comprising a shaft, transfer box and two destructive-loading crown, the axis of which is parallel to the longitudinal axis of the boom, the direction of their rotation are mutually opposite, and the case of each of the destructive-loading crowns made in the form of a truncated conical surface, uniting smaller base side of the face with a large base from transfer gearbox, characterized in that on the outer surfaces of the housings destructive-loading crowns installed with the possibility of overlapping paths of movement and reversing the direction of rotation of a triangular prism with the disk tools.

2. The Executive body of the digging machine according to claim 1, characterized in that the outer surfaces of the housings destructive-loading crowns made in the form of truncated multi-faceted pyramids on each face of which is attached a triangular prize is s with the disk tools with the possibility of mounting, dismantling and various schemes set by the width.

3. The Executive body of the digging machine according to claim 1 or 2, characterized in that to one of the edges of triangular prisms on destructive-loading crowns from a face attached disk tool on the axis of the trunnion, and the other two faces form a dihedral angle φ with the common edge, facing toward the transfer case gear and intersect the axis destructive-loading crown at an acute angle β in the direction of the face plane and the plane passing through the common edge and the axis destructive-loading crown symmetrically placed inside the dihedral angle φ.

4. The Executive body of the digging machine according to claim 1 or 2, characterized in that the transfer box is made with a kinematic link and the spacing tMron-axis destructive-loading crowns, in which a triangular prism with the disk tools are located in areas with rolling mates with the formation of the labyrinth clearances in the axial Δ1and radial Δ2directions with variable areas of cross sections of maximum Δ1(max), Δ2(max)to the minimum Δ1(minutes), Δ2(minutes)in the direction of the large grounds buildings destructive-loading crowns.

5. The Executive body of the digging machine according to claim 1, characterized in that the triangular Pristina each of destructive-loading crowns placed on schemes set so what faces that share an edge with the sides of the dihedral angle φ are helical surfaces with discontinuities spirals, forming both right and left blade screws in a single device.

6. The Executive body of the digging machine according to claim 1, characterized in that the attachment axis trunnion rotary tool each of the triangular prisms placed on the inner wall connecting the two faces that share an edge with the sides of the dihedral angle φ.



 

Same patents:

FIELD: mining.

SUBSTANCE: mining tunnelling combine comprises a displacement mechanism and a boom or a frame. On the frame there are at least two rotary cutting heads and two cutting rollers. Axes of cutting heads rotation pass in direction of tunnelling or are arranged at the sharp angle relative to tunnelling direction. Two cutting rollers are installed in parallel and behind the cutting heads, and may be arranged on the foot and on the roof, accordingly. Both cutting rollers comprise end sections capable of sliding to the profile width to form a substantially rectangular profile of cutting. At the same time each cutting roller is separately hingedly connected with the boom or the frame with the possibility of height adjustment, and each cutting roller has a diameter corresponding to at least one fifth of diameter of cutting heads cutting.

EFFECT: formation of a rectangular profile of a tunnel by a mining machine, exclusion of operation to remove curved profiles, higher safety.

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FIELD: mining.

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EFFECT: reduced size of operating element while retaining efficiency of extracting thin coal layers with hard inclusions.

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FIELD: mining.

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EFFECT: invention provides for installation of anchors most closely to the face with simultaneous continuation of boring process.

10 cl, 3 dwg

FIELD: mining.

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22 cl, 63 dwg

FIELD: mining.

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FIELD: engines and pumps.

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5 dwg

FIELD: mining.

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2 cl, 4 dwg

FIELD: mining.

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5 dwg

FIELD: mining.

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55 cl, 22 dwg

FIELD: mining.

SUBSTANCE: rolling drilling tool for extraction of material according to the undercutting principle contains cutting surface (12) made concentrically about central M axis and conically diverging to end surface (11) of rolling drilling tool (10) and support housing located on inner side of cutting surface (12) and passing to end surface (11) of the tool. Cutting surface (12) consists of material that is harder than that of support housing, and support housing forms conical ring-shaped rib at least on outer circular wall, and the inner circular wall of rib restricts free space (21) on end surface (11) of the tool. Due to free space and various pairs of materials the tool can be turned automatically.

EFFECT: increasing the service life and operating time of rolling drilling tool.

17 cl, 9 dwg

Rock-cutting tool // 2307932

FIELD: mining, particularly rock-cutting tools for underground mineral mining and rock cutting by mining and tunneling machines, plowing apparatus and other mining and construction machines provided with cutting tools.

SUBSTANCE: rock-cutting tool comprises holder and cutting head to be connected to the holder. Holder is wedge-like in cutting head area. The wedge has cylindrical top defined by generator transversal to side faces of cutting head and rock-cutting tool axis. Cutting head is shaped as hollow trihedral prism having one ridge used as cutting edge. Orifice communicated with edge-like cavity is created between another two ribs. Remote rib of the cavity is shaped as cylindrical surface with generator transversal to side faces. Wedge-like taper is 5-10° greater that of wedge-like holder. Wedge-like resilient members are arranged between cutting head and holder.

EFFECT: improved capabilities of cutting tool.

5 dwg

Rock-cutting tool // 2307932

FIELD: mining, particularly rock-cutting tools for underground mineral mining and rock cutting by mining and tunneling machines, plowing apparatus and other mining and construction machines provided with cutting tools.

SUBSTANCE: rock-cutting tool comprises holder and cutting head to be connected to the holder. Holder is wedge-like in cutting head area. The wedge has cylindrical top defined by generator transversal to side faces of cutting head and rock-cutting tool axis. Cutting head is shaped as hollow trihedral prism having one ridge used as cutting edge. Orifice communicated with edge-like cavity is created between another two ribs. Remote rib of the cavity is shaped as cylindrical surface with generator transversal to side faces. Wedge-like taper is 5-10° greater that of wedge-like holder. Wedge-like resilient members are arranged between cutting head and holder.

EFFECT: improved capabilities of cutting tool.

5 dwg

FIELD: mining.

SUBSTANCE: rolling drilling tool for extraction of material according to the undercutting principle contains cutting surface (12) made concentrically about central M axis and conically diverging to end surface (11) of rolling drilling tool (10) and support housing located on inner side of cutting surface (12) and passing to end surface (11) of the tool. Cutting surface (12) consists of material that is harder than that of support housing, and support housing forms conical ring-shaped rib at least on outer circular wall, and the inner circular wall of rib restricts free space (21) on end surface (11) of the tool. Due to free space and various pairs of materials the tool can be turned automatically.

EFFECT: increasing the service life and operating time of rolling drilling tool.

17 cl, 9 dwg

FIELD: mining.

SUBSTANCE: tunnelling machine actuator comprises a boom, a dispensing reducer and two breaking-loading crowns, axes of which are parallel to the longitudinal axis of the boom, the direction of their rotation is mutually opposite, and the body of each breaking-loading crowns is arranged in the form of a truncated conical surface combining a smaller base at the side of the bottomhole with a larger base at the side of the dispensing reducer. On the outer surfaces of bodies of breaking-loading crowns there are trihedral prisms installed with disc tools as capable of covering trajectories of movement and reversing rotation directions.

EFFECT: higher efficiency of mine tunnelling by combination of breaking, grinding and loading processes in a tunnelling actuator.

6 cl, 11 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

Heading machine // 2305185

FIELD: mining machinery manufacturing, particularly machines which completely free the mineral from the seam.

SUBSTANCE: heading machine comprises executive tool including boom with body and cutting crown, as well as feeder with nose and rock raking device. Rock raking device is installed in lower boom part facing ground. Rock raking device is plate shaped as rectangular trapezoid. Minor trapezoid side is located at cutting edge, major one facing feeder nose. The plate is rigidly connected to shaft displaced towards minor trapezoid side. The shaft is installed in socket formed in lower boom part facing ground. The plate may rotate with respect to longitudinal shaft axis. Stops are formed on boom body from both sides of longitudinal boom body axis and spaced a distance providing plate rotation through α angle, wherein 30°≤α≤45°.

EFFECT: simplified structure and increased efficiency of machine loading near face.

4 dwg

FIELD: cutting-loading machines for explosion-free cutting of deposits having complex structures.

SUBSTANCE: mining machine comprises frame with movement mechanism, boom with cutting crown and loading device. Crown has rock-cutting tools. Loading device is made as inclined rotary hoisting table with gathering arms and central drag conveyor. Frame may rotate with loading device installed thereon and with unloading conveyer. Cutting crown may rotate about axis of rotation with respect to longitudinal boom axis through φ angle defined in dependence of rock hardness. Rock-cutting members are made as disc cutters reinforced by hard-alloyed pins and freely rotating in staggered order around replaceable pins.

EFFECT: increased operational efficiency due to extended field of practical usage thereof and increased service life of rock-cutting members.

5 dwg

Full-face machine // 2324051

FIELD: mining; apparatus for making tunnels in underground mining of minerals.

SUBSTANCE: machine includes undercarriage representing a frame whereon caterpillar trucks are attached and trunnion axes of a working head gearbox together with a rotary working head, loading buckets, berm mills, cutting drums, gathering blades, conveyer and protection cowl mounted on supports of said frame. Hydraulic lift cylinders of the working head gearbox are attached to this frame, rods of said cylinders are attached to the working head housing and all rotating parts of said rods are set into bearings equipped with a force lubrication system. The lubrication system includes pump, pressure pipeline, manifolds and system of distribution tubes leading to gear shaft bearings of the gearbox. The undercarriage frame has two tightly closed cavities, wherein a pressure line between the pump and manifolds is positioned being made in the form of coils. Both cavities of the frame are filled with cooling fluid.

EFFECT: cooling of lubricating fluid within the lubrication system; increasing the life of gear shaft bearings of the machine gearbox; decreasing the ambient air temperature; enhancement of working conditions for the operating staff.

4 dwg

Full-face machine // 2324052

FIELD: mining; apparatus for making arched tunnels in underground mining of minerals.

SUBSTANCE: machine includes frame whereon an undercarriage and working element drive gearbox are mounted together with a rotary working head being attached to output shafts of said gearbox. The working head consists of borer, pitching borer, cross element, each end of its arms having a loading bucket with a bottom and sidewalls, and conveyer. The front face bottoms of two loading buckets positioned on opposite arms of said cross element are slopped forward with respect to the machine displacement vector, and those of the other buckets - slopped backward with respect to the same vector.

EFFECT: cleaning-up with the full engagement of the bucket cross-section area; reduction of impact loads for the cross element; reduction of heating and increased wear of the bearings in the working head drive gearbox of the machine.

7 dwg

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