Device to shift holder of roof cutter and safety element for this device

FIELD: construction.

SUBSTANCE: device is designed for installation and operation on a body of a winning draw knife. The device to shift a holder of a roof cutter is installed as capable of regulation along the height of the roof cutter holder. The device includes a worm wheel interacting with a rack gearing available on the holder of the roof cutter, the input shaft for actuation of the worm wheel, a gear preferably arranged between the input shaft and the worm wheel and an upper board, which is equipped with a through hole for the input shaft and which is fixed on the body of the draw knife without possibility of rotation. The upper board is equipped with at least one fastening device, to which a safety element is fixed in the mounting condition without the possibility of slipping as placed onto the free end of the input shaft.

EFFECT: invention provides for the possibility of installation and disconnection of a device for shifting of a roof cutter holder by the method preventing unintentional movements of a shifted roof cutter holder.

16 cl, 5 dwg

 

The invention concerns a device to shift the holder roofing cutter designed for mounted on the case of the mining plough with adjustable height holder roofing cutter, which contains the worm wheel, which interacts with a rack and pinion gear toothing provided on the holder roofing cutter, input shaft for actuating the worm wheel, preferably located between the input shaft and the worm wheel gear and the top plate which is provided with a through hole for the input shaft, wherein the top plate is fixed or secured to the plow without the possibility of rotation. The invention also concerns a safety element for such a device to shift the holder roofing cutter.

This kind of permutation device holder roofing cutter is known from the utility model DE 202005016177 U1 of the applicant. This kind of permutation device holder roofing cutter, which, in particular, applies to buildings with planes designed for planes tear actions of the applicant, and which is used installed in a removable constructive node planetary gear acting like multiplier torque and thus providing the possibility of replacing the holder roofing cutter even in p is zemnyh faces in conditions of limited space in a relatively straightforward manner and with little effort can be removed by detaching the upper plate from the body of the plane and when the wear of the teeth of the worm wheel, or in severe during transmission, etc. is relatively easy be replaced by another device permutations holder roofing cutter. When used in underground work, for example, mining the coal with mine plow in the pit, when the reciprocating movement of plow body cutters mounted on the holder roofing cutter are in contact with the front face, which can occur unintentional movement permutation holder roofing cutter or unwanted vibration.

Object of the invention is a device to shift the holder roofing cutter, which eliminates the aforementioned disadvantages and simple way provided the possibility of mounting and detaching the locking mechanism, which prevents unintended movements permutation holder roofing cutter.

This task in the design of the permutation holder roofing cutter is solved by the fact that the top plate is provided with at least one mounting device to which the state Assembly is mounted without the possibility of rotation attached to the free end of the input shaft of the safety element.

In the proposed image is the group of the solution proposed safety element, which fits over the free end of the input shaft, through which the driven gear and the worm wheel, and this safety element through the corresponding mounting device is mounted on a top plate without rotation. As in accordance with the invention, the safety element by means of the fastening device is fixed on the top plate, the mount when this happens inside a constructive node, so that an appropriate decision can be applied to all buildings planes and plow devices, which are installed or used such a device to shift the holder roofing cutter. Thanks to a combination of wear on the input shaft of the safety element, and a separate fastening device used for preventing rotation of fixing this safety element, at the same time allows mounting and Dismounting if necessary, also in poorly accessible places.

In one particularly preferred embodiments the device of the permutation holder roofing cutter is equipped with a transmission, which represents a planetary gear set that are connected without the possibility of rotation with the upper plate through having the form of a glass device, perception, reaction torque, as is then described in detail in DE 202005016177 U1, on which is contained in the description is a reference to the addition of the present description. Especially preferred if the top plate together with the worm wheel, the transmission and the input shaft forms a removable replaceable structural unit. The present invention, however, may preferably be used in other devices permutation holder roofing cutter, in particular, in this arrangement of the permutation holder roofing cutter, in which the drive of the worm wheel is provided through the top plate made by any way of the input shaft of the transmission, or the like

In the simplest embodiment, the mounting device may include a threaded finger or the like, with which the safety element is fixed on the upper plate in the state Assembly, in this case, for example, the safety screw is screwed into the corresponding available in the upper plate of the screw hole. In a preferred embodiment, the mounting device includes a slotted recess, in which is inserted from above the safety element to the inside of the slot recesses to hold with a positive locking of the safety element against rotation and simultaneously pre-positioning of the safety element relative to Crepin the second device. Particularly preferably, if the slot recess passes, starting from the longitudinal edge of the top plate, and extends over the through hole for the input shaft. Also preferably grooved recess on the longitudinal edge or near it may be provided with marginal notches forming an undercut, in which is inserted connected with the safety element of the detachable connection of the safety valve with the locking plate. Moreover, in this embodiment, is applied composite mounting device, which, in particular, due to the geometric circuit enables fixing of the safety element and at the same time, the device setup permutation holder roofing cutter in a retracted position.

In a particularly preferred embodiment, the input shaft at the free end may have a polygonal recess, for example, a quadrangular recess for installation of the adjusting tool. Of course, then the safety element is preferably provided with a polygonal protrusion or, respectively, the rectangular protrusion, which flush is inserted into the polygonal recess in the Assembly, when necessary to prevent rotation of the safety means by fixing the disorder, due to the interaction of polygonal recess and a polygonal protrusion avoid rotation of the input shaft.

The objective of the invention is also solved using the safety element for respectively performed permutation device holder roofing cutter, in accordance with the invention, the safety element is slipped onto the free end of the input shaft with the possibility of detached and attached without the possibility of rotation on the upper plate of the fixing device. Particularly preferably, if the safety element is designed as a safety plate, the underside of which is fixed inserted flush into the polygonal recess on the input shaft of the polygonal protrusion, and on the rear side of which plug connection securing the safety valve. For fixation of the safety valve is particularly preferable if, as indicated above, the upper plate is provided with a slotted recess, which is part of the mounting device. The safety plate can be, in particular, on the back side provided with a slot into which is inserted performed on the fixing plate fixing unit of pressure relief valves. Then by means of the clamping plate may be provided with a fixation with geometric tamikamakathaikal valves in the slot recess in the upper plate, while due to coupling with one another slot and the fixing unit by a geometric circuit provides fixing of the safety plate relative to the slot recess. Due to composite construction at the same time provides the possibility to re-detach mounting device with little effort.

According to one particularly preferred embodiments may be provided located parallel to the axis of the slot of the threaded finger, and the locking block is provided with a transverse hole, whereby the safety valve is placed on the threaded finger. Threaded finger may, for example, be an integral part of the screw head, which is suitably rigidly fixed to the fixing plate. Then after putting on the locking block on the free end of the threaded pin can be screw lock nut or the like, which, as the only item, it will be necessary to detach by means of a wrench, then, for example, with a hammer to dislodge the locking block from the slot, and then to dismantle the safety plate by lifting it up.

To create a smaller space for briquetting of fine coal or the like, particularly preferably, if the safety plate has polyrope the front side and a recess on the lower side around the polygonal projection.

Other advantages and embodiments of the invention follow from the subsequent description is schematically shown in the drawing, examples of implementation. In the drawings shown:

figure 1 - in the future by the invention device permutations holder roofing cutter according to the first embodiment;

figure 2 schematically in greatly simplified form a vertical section of the device permutations holder roofing cutter shown in figure 1;

3 - in the perspective image with a spatial separation of the parts of the fastening elements for the device to shift the holder roofing cutter shown in figures 1 and 2;

4 is a horizontal section of the fastening elements in accordance with Fig 3; and

5 is a schematically in highly simplified form, the permutation device holder roofing cutter according to the second embodiment in assembled position on the plow.

Figure 1 and 2 shows the device 10 permutations holder roofing cutter, which can be applied as complete construction unit not shown in detail in figures 1 and 2, the plow, for example, on the plow tear actions. The permutation device holder roofing cutter is equipped with a massive upper plate 1, which by means of the fastening screws 2, here the number of four,can be fixed in position for mounting the holder roofing tooth on the body of the mining plow for underground mining. Mounting screws 2 respectively pass through the pair of lateral wings 3 of the upper plate 1 and the head 4 mounting screws 2 in assembled position without the possibility of rotation mounted in corresponding recesses present in the plow, so you need to tighten the top alone fixing nuts 5 for fixing the upper plate 1 or, respectively, for removal from the body of the plane when disconnected all nuts 5.

For the change in height is not depicted holder roofing cutter device 10 permutations holder roofing cutter with rotating relative to the upper plate 1 of the worm wheel 6, which at its perimeter equipped with powerful spiral worm wheel 7, which is an angle of about 380-400, slightly higher than the angle of normal spirals. In assembled position on the plow helix 7 of the worm wheel 6 is in engagement with a toothed rack (not illustrated), which is made by the holder of the roofing cutter, as, indeed, it is known specialist coal plows, so that by rotation of the worm wheel 6 holder roofing cutter moves up or down. In the embodiment shown in figures 1 and 2, between the worm wheel 6 and schematically shown in figure 2, the input shaft 8 is a planetary gear 9 with which the rotator is the second movement, that is connected to the input shaft 8 of the tool is greatly reduced, to thereby reduce to a minimum spend miner effort to shift the holder roofing cutter. The input shaft 8 to the planetary gear 9 is installed almost vertically and accessible from above through the through hole 18 in the top plate 1. The free end of the input shaft 8 is here provided with a polygonal recess 8' square shape. Input shaft could also consist of a bushing, knuckle or of any polygonal recess installation tool, which directly or through other transmission elements connected to the transmission. The planetary gear 9 is made in the form of a multiplier torque or effort and is so compact that she, along with having the form of a glass device 11 perception reaction to the torque to which the planetary gear 9 is turned down very low by means of screws 12, may be placed inside the worm wheel 6. The drive shaft 13 of the transmission 9, in turn, engages with a positive locking in the bearing sleeve 14, which at the same time without the possibility of rotation, for example, through a corresponding wedge connection, is in mesh with the worm wheel 6, so that the output movement of the transmission 9 in the form of Versatel the nogo movement is transmitted to the worm wheel 6. About design not shown in detail, the planetary gear 9 is referenced, as already mentioned above, DE 202005016177 U1.

In shaped glass device 11 perception reaction to the torque placed the planetary gear 9, and preferably through the geometric circuit, such as, in particular, asymmetric protrusions 15 on the edge of the glass, it is rigidly mounted flush with the bottom side of the top plate 1, so that when stopped the hollow wheel of the planetary gear of the planetary wheels can rotate inside the planetary gear with the Central wheel. Good mobility of the worm wheel 6 relative to the upper plate 1 or, respectively, the device 11 perception reaction torque, is achieved by means of two contact sealing rings 16, which are, on the one hand, between the projections 15 and the upper side of the worm wheel 6 and, on the other hand, between the lower side of the worm wheel 6 and the bottom of the receiving recess of the device 10 permutations holder roofing cutter in the plow.

The input shaft 8 of the device 10 permutations holder roofing cutter may be actuated only when deleted is indicated generally in the figures by item 20 of the fixation device, intended for installation on which ogene rotation of the worm wheel 6 and, however, the length of the extension holder roofing cutter. The device 20 fixation has a composite construction and includes as basic elements interacting with geometric circuit, including also the input shaft 8, the safety element 21 connected with him detachable connection of the safety valve 40, and the slot recess 17 in the top plate 1, which can be installed flush without the possibility of rotation of the pressure relief valve 40 to simultaneously protect from disconnecting the safety element 21.

Figure 1 clearly shows that the slot recess 17 on the upper plate 1 takes place, starting from here which the front longitudinal edges 1', up through holes (18, 2) to the input shaft 8 between the two wings 3, and regarding partially omitted in this area of the upper side of the upper plate 1 has a rectangular cross-section, which ends in almost semicircular and having a characteristic symmetrical with respect to the axis A of rotation of the worm wheel form the main plot. In the lower area of the slot recesses 17, near the longitudinal edges 1', performed two lateral edge of the recess 19, which form the undercut for mounting the pressure relief valve 40 with geometric circuit, as will be explained, the slot recess 17.

Now the design of the safety element 21 and the pressure relief valve 40 will be explained first with reference to figure 3 and 4, on which the safety element and the safety valve are shown separately. Perspective view in figure 3 allows a good to distinguish that the safety element 21 consists of a preferably one-piece protective plates 23, which has an oblong shaped strap section 24 and the head portion 25 semicircular shape. In the center of the head section 25 is located here which is a square box 26, which is fixed to the rectangular pin 27, which is placed at the bottom side 28, as clearly seen in figure 4, by a few centimeters. Concentric around the Central axis of the tetragonal axle 27 is made of the recess 29, in which the Assembly may be omitted, the end portion of the input shaft (8, 2)to tetragonal axle 27 can enter the corresponding rectangular recess (8', 2) with a flush, in order to lock the worm wheel, and a planetary transmission in their angular position. The form of the safety plate 23 as a whole is designed so that it can be inserted almost flush into the corresponding slot recess 17 on top to not only polygonal pin 27 is ogla be omitted in the input shaft 8, but the safety plate is also partly down to the upper plate. Due to the oblong configuration of the safety element 21, which represents a safety plate 23 can be ensured that when only partial lowering of the polygonal axle 27 in a corresponding polygonal recess (8', 2) worm wheel could be rearranged, at least up until the safety plate 21 is aligned with the slot recess (17, Fig.1) and can be lowered to the base of the slot recess. Then the transverse crosspiece 29 on the lower side 28 of the safety plate 23 will be adjacent to the base of the slot recess and the rear side 30 of the safety plate 23 under the bottom side 28 occurs free space, which can be inserted into the fixing plate 41 of the safety valve 40. On the rear side 30 of the safety plate 23 is simultaneously executed slot 31 with several ledges, which here has a first section 32 of the slot into which may be inserted protruding from the locking plate 41 up fixing unit 42 of the relief valve 40. In the shown embodiment, the slot 31 has a more advanced compared to the more narrow intermediate section 33 section 34 of the slot with a rectangular poperen the m section, in which the head 35 of the fastening screw 36 can be inserted so that the screw rod 37 of the fastening screw 36 is parallel to the axis of the slot. The fixing unit 42 in the center equipped with a transverse hole 43 for putting the fixing unit 42 on the threaded rod 37 threaded pins 36 and subsequent rigid attachment to each other protective plates 23 and the pressure relief valve 40 by means of the locking nut 38.

Lock the safety element 21 through the pressure relief valve 40 in the slot recess (17, Fig.1) on the upper plate 1 is due to the fact that the fixing plate 41 is wider than the safety plate 23, and both sides would like to see it side walls 22. In the state Assembly, as shown in figure 1, the fixing plate 41 or advanced, respectively, exposed on the sides of the plots can drop in marginal recesses (19, figure 1). The shape of the slot recess prevents when the safety element 21 of the worm wheel could rotate around its axis. Pressure relief valve 40 in turn by means of the clamping plate 41 prevents the plug from the top of the safety element 21 is active when the fastening screw 36 can be removed by lifting up. To detach it is only necessary to remove the anchor nut 38, then you can get relief valve 40 from the slot, and then you can remove the safety element 21 lifting up. Re-selecting the appropriate part of the polygonal recess 8', available in the input shaft 8, a rotary tool, (only) then you can rearrange the worm wheel 6. Replacement can also be performed by the safety element 21.

Figure 5 shows an example implementation of several of the modified device 110 permutation holder roofing cutter. Design of the safety element 121 and the pressure relief valve 140 to a certain extent identical to the previous embodiment, which re-description of the configuration of these elements, including connecting the two elements 121, 140 threaded finger 136 is omitted. Identical to the completed device 120 fixation is used here, however, the upper plate 101, which is significantly more massive than in the previous embodiment, and is mounted, if necessary, also rigidly welded on the housing 150 of the plow, which is only schematically shown the worm wheel 106 is removed not up when dismantled the cross, and in the direction of the rear side 151 of the housing 150 of the plane. When disassembled and extracted from engagement in the slot recess 117, available in top the th plate 101, the locking device 120 as the input shaft 108 and is made here in the form of a cartridge transfer 109 can be removed by lifting up through the through hole 118 in the upper plate 1 before then worm wheel 106 is removed by the lead back. Transfer 109 may be designed differently than in the previous example.

For a specialist from the previous descriptions follow the numerous modifications which fall within the protection scope of the claims. As already shown two examples of implementation proposed by the invention, the fastening device can be used in almost all possible ways of implementing devices permutation holder roofing cutter, in which the actuation of the worm wheel to shift the holder roofing cutter from the top through the top plate, so as to lock the mounting device, for example, you only need to perform one grooved recess in the upper plate, in order then to be able to use, as shown, the safety element and the safety valve 40. In the embodiments and the figures shown located between the input shaft and worm wheel transmission. The invention and, in particular, the safety element for fixing the device to shift the holder of the roof is about cutter or accordingly, the worm wheel may, however, also be used in the permutation device holder roofing cutter without using the transmission, direct drive worm wheel. Input shaft and the safety element can also include with each other engages flush with protrusions and recesses of the other form.

1. The permutation device holder roofing cutter designed to mounted on the case of the mining plough with adjustable height holder roofing cutter, comprising a worm wheel (6; 106), which interacts with a rack and pinion gear toothing provided on the holder roofing cutter, input shaft (8; 108) for actuating the worm wheel, preferably located between the input shaft and worm wheel transmission (9; 109) and top plate (1; 101), which is provided with a through hole (18; 118) for the input shaft and which is fixed or attached to the casing (1) of a plane without a possibility of rotation, characterized in that the top plate (1; 101) is provided with at least one mounting device to which the state Assembly attached without the possibility of rotation attached to the free end of the input shaft of the safety element (21; 121).

2. The permutation device according to claim 1, characterized in that the transfer 9) is a planetary transmission, which is connected without the possibility of turning with the upper plate (1) having the form of a glass device (11) perception reaction torque, and the worm wheel, the transmission and the input shaft preferably form one structural unit.

3. The permutation device according to claim 1, characterized in that the fastening device comprises a slotted recess (17, 117), which is inserted from above the safety element (21; 121).

4. The permutation device according to claim 3, characterized in that the slotted recess (17) is, starting from the longitudinal edge (1') of the upper plate (1), and goes by through hole (18) for the input shaft.

5. The permutation device according to claim 4, characterized in that the slotted recess (17) on the longitudinal edge (1') or near it is equipped with edge notches (19)forming an undercut, in which is inserted connected with the safety element (21) of the plug connection of the safety valve (40) with locking plate (41).

6. The permutation device according to claim 1, characterized in that the input shaft (8) at the free end has a polygonal recess (8') for setting the adjustment tool.

7. The permutation device according to claim 1, characterized in that the safety element (21; 121) is attached to the free end of the input shaft (8; 108), with the possibility of detached and attached without the possibilities of rotation performed on the upper plate (1; 101) of the fixing device.

8. The permutation device according to claim 1, characterized in that the safety element (21; 121) is designed as a safety plate (23), the underside of which is fixed inserted flush into the polygonal recess of polygonal protrusion (27; 127), and on the rear side of which plug connection securing the safety valve (40).

9. The permutation device according to claim 1, characterized in that the protective plate (21) on the rear side (30) is provided with a slot (31), into which is inserted performed on the safety relief valve (40) on the locking plate (41) of the locking block (42) pressure relief valve (40).

10. The permutation device according to claim 9, characterized in that there is located parallel to the axis of the slot (31) threaded pin (36) and retainer block (42) is provided with a transverse hole (43) for putting on a threaded pin (36).

11. The permutation device according to one of PP-10, characterized in that the protective plate (23) has a semicircular front side (25) and the recess (29) from the bottom side (28) around the polygonal protrusion (27).

12. The safety element of the permutation device holder roofing cutter according to one of claims 1 to 11, characterized in that the safety element (21; 121) is attached to the free end of the input shaft (8 108) with the possibility of detached and attached without the possibility of rotation on the upper plate (1; 101) of the fixing device.

13. The safety element according to item 12, characterized in that the safety element (21; 121) is designed as a safety plate (23), the underside of which is fixed inserted flush into the polygonal recess of polygonal protrusion (27; 127), and on the rear side of which plug connection securing the safety valve (40).

14. The safety element according to item 12, wherein the safety plate (21) on the rear side (30) is provided with a slot (31), into which is inserted performed on the safety relief valve (40) on the locking plate (41) of the locking block (42) pressure relief valve (40).

15. The safety element 14, characterized in that there is located parallel to the axis of the slot (31) threaded pin (36) and retainer block (42) is provided with a transverse hole (43) for putting on a threaded pin (36).

16. The safety element on one of PP-15, characterized in that the protective plate (23) has a semicircular front side (25) and the recess (29) from the bottom side (28) around the polygonal protrusion (27).



 

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3 cl, 5 dwg, 1 ex

FIELD: mining industry, possible use for controlling position of extracting machine, in particular, plough plant or in complexes for underground extraction of mineral resources.

SUBSTANCE: device contains, mutually interconnected: moving hydro-jack connected to section of lining, pusher, which by means of horizontal axis is jointly connected to column of extracting machine, and controlling hydro-jack, cylinder and rod of which are provided with spherical heads, jointly mounted in sockets of, respectively, overhanging support of extractive machine column and pusher. At least inside one of sockets cylindrical recess is made, in which between spherical head and end of cylinder a bushing is positioned, prevented from moving along axis of recess and provided with at least one limiter, positioned with possible contact with surface of spherical head of hydro-jack during its folding. Internal surface of bushing is positioned with a gap around the neck of head, while distance between closer ends of cylinder and bushing is greater than length of mounting surface of bushing in socket. Inside the bushing, on the side adjacent to spherical head, a recess may be made limited with a ring, internal diameter of which is greater than diameter of spherical head, while mounted in recess of bushing are at least two limiters made in form of blocks, internal diameter of which is less than diameter of spherical head, and external diameter matches diameter of recess of bushing, while limiters are mounted with their possible extraction from recess of bushing after its removal from spherical head. On external surface of bushing a groove may be made, and in socket - two through apertures, perpendicular to axis of cylindrical recess of socket, wherein two shafts are located with possible contact with walls of groove in bushing.

EFFECT: lower laboriousness of device manufacture and increased reliability of device operation.

3 cl, 5 dwg, 1 ex

FIELD: mining, particularly production plants with console control of production machine cutting horizon, particularly for coal deposit mining plough.

SUBSTANCE: connection console comprises hinge bearing connection for hinged head of console cylinder arrangement. The console also has fork-like console connection shifted with respect to hinge bearing connection and adapted to secure head part of console bar by means of hinge pin. Fork-like console connection has two parallel elbows having orifices for hinge pin receiving. Inner sides of elbows are spaced apart and are opposite one to another. The elbows are connected to each other at base. Inner sides of each elbow pass into elbow edge through chamfer.

EFFECT: decreased wear.

9 cl, 2 dwg

FIELD: mining, particularly coal plows to be moved by means of hauling chains.

SUBSTANCE: guiding device section comprises two overlapped guiding channels for chain receiving, upper guiding strip and lower guiding beam, as well as lower sliding guide used for plow orientation. The channels are separated one from another with molded spacing slide. Upper guiding channel is closed with front wall including guiding strip and passing into guiding beam. Formed between guiding beam and sliding guider is slot orifice for plow guider hook or plow blade receiving. Created in front wall are receiving cuts to arrange drag-bars for adjacent plow guiding device sections connection. Front wall with guiding strip, guiding beam, as well as receiving cuts and rear wall including sliding guider, are made of integral mold extending along guiding device section.

EFFECT: decreased assemblage costs, reduced number of molds to be manufactured.

10 cl, 5 dwg

FIELD: mining.

SUBSTANCE: group of inventions refers to mining, particularly to ploughing installation and to procedure of coal mining with plough installation and can be implemented at underground development of coal beds. The plough installation for coal mining consists of a coal plough designed to travel by means of a pull chain of the plough. The pull chain can be driven to motion via a chain drive sprocket equipped with a drive from a drive station for the pull chain of the plough; the pull chain can change direction on that guiding sprocket, which is not equipped with a drive from the drive station. The coal plough can operate in a reverse mode. The guiding sprocket is installed in slides, which are moved with a tensioning device in the direction of coal plough movement. The invention also includes the procedure for coal mining with the plough installation.

EFFECT: elimination of sagging and break of pull chain, simplicity of design of drive station, and decreased distance from end stop of plough travel to sprocket of plough chain.

12 cl, 4 dwg

FIELD: mining.

SUBSTANCE: drawing knife includes the plate of support frame consisting of middle part rigidly attached to the drawing knife body and two external parts connected to it in a movable manner, guide shoes on the end of each part of the support frame plate, which is located on the side of laying; those guide shoes are used for introducing the support frame plate in guide channels for pull chain of the drawing knife. Drawing knife also includes at least one chain shoe which interacts with support frame plate and intended for each direction of the drawing knife movement and for attachment of its pull chain. Both chain shoes are provided on pusher which is inserted with possibility of being replaced or provided with possibility of being inserted on the end of the middle part of support frame plate on the side of laying to the groove. Groove is restricted in both directions of drawing knife movement with one shoe part respectively, which forms and integral component part of the middle part of support frame plate, equipped with guide shoe and has support surface for pusher.

EFFECT: improving attachment of pull chain of the drawing knife or hinged connection on the side of laying between parts of support frame plate, and improving running characteristic of the chain.

16 cl, 9 dwg

FIELD: mining.

SUBSTANCE: adjustment device for holder of upper cutter for mining drawknife located on the housing with possibility of adjustment as to height of upper cutter holder includes worm gear to interact with the gear rim made on upper cutter holder like gear rack, which together with transmission and inlet shaft is provided with possibility of being fixed on the drawknife housing in the form of a module. At that, transmission consists of planetary gear set which is located between inlet shaft and worm gear. Also the invention refers to mining drawknife with such adjustment device.

EFFECT: reducing the forces applied by the miner or with the drive at adjustment and installation of upper cutter holder.

12 cl, 5 dwg

Mining drawknife // 2401946

FIELD: mining.

SUBSTANCE: mining drawknife, namely coal mining drawknife, includes the main part of the drawknife directed on movable conveyor and on the inclined support surface of which there is swing bolt for rotary support of cutter holder for each direction of the drawknife movement, two cutter holders which are installed by means of pivot bearing with possibility of turning on the appropriate swing bolt and have the lower part by means of which the cutter holder is directed on turning surface formed under support surface on the main body of drawknife and oriented concentrically around rotary axis of the appropriate swing bolt. Pivot bearing of cutter holder is made in the form of receiving element opened along the edge, by means of which the cutter holder in mounting turning position has the possibility of being pulled parallel to support surface to swing bolt.

EFFECT: easy installation and removal of cutter holders, decreasing outages of drawknife installations.

15 cl, 7 dwg

FIELD: mining.

SUBSTANCE: invention relates to mining, particularly, to mining-and-hauling complexes, and can be used in development of sheet deposits. Mining-and-hauling complex comprises horizontally enclosed chain haulage member with rectangular scrapers secured thereto across conveyor flight to make load-carrying run and idle run. Note here that every scraper is arranged on horizontal link of haulage member round-link chain to allow interaction between cylindrical cutouts on scraper with straight section of bar that makes chain link on its half diameter. Scraper is locked by means of detachable half-coupling on outer chain link to allow the scraper to turn about conveyor axis. Pan line, nearby drive and driven sprockets, has curvilinear transition sections with transition from flat horizontal to flat vertical arrangement directly before drive and driven sprockets. Scraper outer edges, on the side of pan line in vertical plane, are curvilinear to interact with curvilinear surfaces of pan line at transition sections. Scrapers, on the side of pan line, have cutouts. Note here that cutout height from chain horizontal link is taken to exceed half the width of the link. Two-chain haulage member is provided with scrapers arranged on outer side of conveyor lengthwise axis. Note that the struts are oriented perpendicular to scrapers and represent equal-resistance beams arranged in mutually perpendicular planes. Detachable tools are directed outward from conveyor lengthwise axis. Top edge of said tools is located at a height from pan line base bottom plane. Arrangement of tools, except for lower tool, and distance between scrapers equipped with tools are defined from mathematical expressions. Note here that stepped arrangement of scrapers features increase in scraper position height toward the side opposite the haulage member motion direction. Note that all scrapers are furnished with tools and provided with additional vertical identical-height struts to interact with vertical sides of pan line on both load-carrying and idle conveyor runs. Surfaces of additional struts on the side of pan line sides are coated by antifriction material layer.

EFFECT: higher efficiency due to increased width of conveyor pan line.

5 dwg

FIELD: mining.

SUBSTANCE: device for determining the cutting line of the extraction system during mining, namely of coal plough system, includes movable conveyor consisting of individual pan elements, each of which has conveyor pan having upper conveyor branch and lower conveyor branch and guide section installed on the front side of mining face, as guide device for extraction machine, and having at least one optic sensor containing sensor head arranged in sensor carrier and capable of being pressed by means of at least one pressure device to boundary surface between coal and bottom to be found. At that, multiple pan elements distributed throughout the length of conveyor are made as sensor pans equipped with protected cavity open to bottom, in which sensor carrier is located or can be located with possibility of its being removed together with sensor head.

EFFECT: reliable detection of boundary surface between coal and bottom with improved operating reliability and minimised susceptibility to wear.

35 cl, 4 dwg

FIELD: mining.

SUBSTANCE: conveyor pan for use with a mining combine with a shoe in the form of sleds when mining in long faces comprises a side element, having a surface for contact with a shoe formed by a part of a side element, stretching horizontally along its entire length. This part has the first end and the second end, every of which has an upper part, a rear part, a front part and an edge. The edge at the first end and the edge at the second end are arranged at the angle of 45 degrees to the vertical plane perpendicular to the horizontal plane formed by the surface of the side element.

EFFECT: improved conveyor pan, delay in combine load transfer from one pan to another and balancing of this load.

14 cl, 6 dwg

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