Roof supports for longwall mining
SUBSTANCE: invention relates to mining, namely to sections of powered supports. The invention proposes a roof support of the main entry, which has two spaced sides, each of which includes a rear base interacting with soil, a hydraulically controlled rear support column connected to the above rear base, a rear shield, a rear connection that attaches the above rear shield in a hinged way to the above said rear base interacting with soil, a middle base interacting with soil and connected to the above said rear base, a hydraulically controlled middle support column connected to the above said middle base, the front base interacting with soil and connected to the above said middle base, and a hydraulically controlled front support column connected to the above said front base. Besides, the roof support includes a rear beam interacting with the roof and hinged to the rear shield, a middle beam interacting with the roof and hinged to the above said rear beam, and the front beam interacting with the roof and hinged to the middle beam interacting with the roof. With that, the above said rear support columns are connected between the above said rear bases and the specified rear beam; the above said middle support columns are connected between the above said middle bases and the above said middle beam, and the above said front support columns are connected between the above said front bases and the above said front beam. A rear connection strip is hinged to each of the above said rear bases interacting with soil; a middle connection strip is hinged to each of the above said middle bases interacting with soil, and the front connection strip is hinged to each of the above said front bases interacting with soil.
EFFECT: improvement of operation of a powered support, namely improvement of stability and provision of constant contact to roof of mining under conditions of variation of mining area relief.
9 cl, 17 dwg
AREA of TECHNOLOGY
 the Present invention relates to a plant comprising a machine for the extraction of rocks, the front conveyor and roof supports. More specifically, this invention relates to such a system that also contains the rear conveyor.
The LEVEL of TECHNOLOGY
 There is a wide variety of installations for the extraction of coal and other rocks from underground reservoirs. One installation, widely used in the development of underground deposits, contains cutting machine, used in the development of long sections or long faces of the reservoir. Such long faces may, depending on the configuration of the reservoir to pass over distances of 1200-1500 feet (366-457 m). In this type of development, it is common to perform a parallel inputs to formation and their connection with one or more main aisles. This scheme defines the boundaries of the pillar (pillar) of a longwall panel, which need to be developed. During the development of an open "plane" pillar of a longwall panel roof of the main aisles are usually supported on movable supports.
 In typical development longwall use cutting machine, which is known in the industry as dinosaury excavation harvester. In alternative devices instead dlinnozernogo excavation harvester� use the plow.
 Dinosaury excavation processor typically includes an elongated movable frame supported on ground rails, which are near the surface of the face and substantially parallel to it. On the working parts located on each end of the elongated frame, rely rotating the driven gear reels designed for coal mining as you progress through the specified frame back and forth in front of the surface of the face. Mined rock falls onto the face conveyor, which is usually attached to the ground rails and runs parallel to the surface of a longwall panel. The face conveyor unloads the breed to other transporters to remove it from the reservoir. As the generation of bottom node of the conveyor and the guide moves forward to allow the continuation of the process of development of the field excavation processor.
 Fig.1 depicts a conventional dinosopoulou installation 10 containing coal-cutting machine in the form of the extraction processor 12 (downhole installed on the conveyor 14 and cantilever roof support 16. As you move the installation 10 through the panel 18 self-propelled roof supports 16 are pushed to the surface 20 a well-known method.
 More specifically, the cantilever roof support 16 is a interacting with beamed roof support unit contained�of ASI interacting with soil base 42 and the shield 24, supported by two hydraulically controlled rack or pistons 28 (shown only one of them), separated from the face conveyor with accessible path 30 displacement. Interacting with a roof beam 32 is pivotally attached at point 34 to the shield 24, and the shield 24 is connected console connection 40 with the base 42. At the front end of the beam 32 is also resistant device 48 that contains a contact plate 50, which is shown in the support surface of the bottom, with the plate 50 is advanced by the hydraulic cylinder 54 from the retracted position to the position at which it is adjacent to part of said surface. Fully extended position thrust device shown in Fig.1 dash-dotted line.
 the Extraction processor 12 includes support for Shearer, made in the form of an elongated movable frame 60 with brake Shoe 64, which is supported movably on the guide path 68, held essentially parallel to the surface of a longwall panel. To each end of the elongate movable frame 60 with the corresponding illicit small element 78 is attached rotatably extending in the lateral direction of the rotating drum 70, which contains a set of attached cutters 74. The principle of operation of the extraction processor 12 is well known in mining and ka� such, is not considered in detail in this document. However, the specialist should be clear that the extraction processor 12 is moved back and forth on guide path 68, so that the cutters 74 on the wheels 70 can be brought into contact with the surface of the face eviction from her breed. As you lower the bottom surface of the guide path 68 and cutting machine 12 to move said surface to enable continuation of the process of development of the field.
 When performing some operations in the mining process, as illustrated in Fig.2, the development of longwall includes the installation of armoured face conveyor 100 front roof supports 104 and installation of armoured face conveyor 108 for roof supports 104. Reinforced conveyor 108, located at the supports 104, collects coal falling out of position over the roof supports, as you move the supports 104 forward. This kind of extraction is known as a coal mining top or sublevel caving. Rear roof pillar 104 used in this operation, contains interacting with soil base 112, a pair of struts 116, average support beam 118 interacting with the roof, the front beam 120 that interacts with the roof and pivotally attached to the Central beam 116, and two-piece rear beam 124 that communicate with a roof and supporting�the MUI another pair of struts 128. Two-piece beam 124 that is located in the rear part of the support 104, covers reinforced conveyor 108, located behind the pillar 104.
 In the roadway or at the end of the main roadway of a longwall panel requires extra wide and extra long roof support unit 129 shown in Fig.3. The specified node 129 includes two spaced apart roof supports 130. Each downhole bearing 130 of the principal passage contains rear interacting with soil base or pontoon 134, front interacting with the soil base or pontoon 138, wherein between each of the pontoons 134 and 138 and the corresponding interacting with a roof beam 146 and 150 are attached spaced support columns 142. The rear pontoon 134 also includes a shield 152 pivotally attached to interacting with a roof beam 146 and coupled with the rear pontoon 134 using connection 154. The front pontoon 138 also contains a shield 158 is pivotally attached to interacting with a roof beam 150 and coupled with the front pontoon 138 using connection 164. In other words, roofing support 130 of the principal passage contains forward-facing roof support at one end and a rearward facing roof support at the other end, and these two supports are connected to the middle point 159. In the specified connection point on each roof pole is located the piston 168 and 172, which extends up to the party�following interacting with a roof beam roof supports.
 To facilitate the maintenance of the roof, each of the two supports 130 also contains an exploded average plate 176, which extend between two adjacent pillars 130 with the formation of the slab. Overlapping the middle of the plate 176 is not connected. The reason for using these two adjacent supports 130 is that each roof support contains its own pontoons, since the working of the pit varies in an irregular way, as you move the supports 130. Each pontoon roof supports must have the ability to move in a vertical direction independently of the other pontoon. Since adjacent roof support are not connected, then maintaining adjacent the location of these poles when advancing roof support Assembly 129 forward is difficult.
 In the above process continuous extraction with the collapse of the upper layer of coal there are two drill drift and bottom breast, passing across between the drifts, wherein the extraction is performed in the rearward direction along the drifts. If you install a different type shown in Fig.4A and 4B, and is known as the setting for continuous extraction direct the course, all the work on the extraction occurs with the passage in the forward direction in the coal mine. In this setup, only one of the front conveyor. The 180 roadway known as end preparatory roadway � supporting the process of production, shall be subjected separately from the recess of a longwall panel and maintained separated from him. The construction of the end of the preparatory roadway increases the complexity of the mining process. When the cut end of the preparatory 180 roadway, you must create a wall 184 to prevent collapse of the roof in the roadway. The creation and maintenance of such a wall is associated with considerable difficulties. To reduce the pressure of the dam, acting on the artificial wall 184, end preparatory to the roadway 180 is made entirely United with beamed roof buttress supports 188, ensuring the reduction of the pressure of the dam on the specified wall 184.
Description of the INVENTION
The TECHNICAL PROBLEM
 the Purpose of this invention is to provide an improved roof support for the operation of the collapse of the upper layer of coal with a continuous recess.
 Another objective of this invention is to provide an improved installation for the collapse of the upper layer of coal with low blood pressure blockage at the ends of entries.
 Another objective of this invention is to provide improved equipment for the collapse of the upper layer of coal.
 Another objective of this invention is to provide an improved roofing supports main�on the roadway, with improved security and work.
 Thus, the present invention proposed Ironman installation of continuous extraction, containing at least one roof support mates, having a longitudinal length, and at least one end of the roof support adjacent to the specified support the pairing. The longitudinal length of the end roof support is substantially less than the longitudinal length of the support mate. There is also at least one roofing downhole bearing, connecting with the said end support and having a longitudinal length that is substantially less than the longitudinal length of the end supports. Also there is a front conveyor passing from the front roof supports mates specified at least one end of the roof support and the at least one roofing downhole supports, and attached thereto, and a rear conveyor passing from the rear roof supports mates specified at least one end of the roof support and the at least one roofing downhole supports, and attached to them.
 In the present invention also proposed roofing support containing a first interacting with the soil base, the first shield, the first interacting with a roof beam pivotally attached to the first shield and the first hydraulically operated supporting rack, connected between �shown the first base and the first beam. The first shield is pivotally connected to the first substrate using the first connection. The roof also includes a second bearing interacting with the soil base, adjacent to the first base, but spaced a second shield, the second interacting with a roof beam pivotally attached to the second shield, and a second hydraulically operated supporting rack, connected between said second base and a second beam. The second shield is pivotally connected to the second substrate using a second connection, wherein the first base and the second base pivotally attached jumper.
Description of the DRAWINGS
 Fig.1 depicts a side view of conventional roofing supports.
 Fig.2 depicts a side view of conventional roofing downhole supports auxiliary passage.
 Fig.3 depicts a view in perspective of a conventional roof supports of the main tunnel.
 Fig.4A depicts a schematic view in perspective illustrating the continuous extraction method known in the prior art as continuous seizure forward stroke. Fig.4B depicts a schematic view illustrating a known method for the continuous extraction direct the course illustrated in Fig.4A.
 Fig.5 depicts a schematic top view of the cut installation continuous extraction in accordance with this invention.
 Fig.6 depicts a schematic �ID in perspective of Ironman install continuous extraction, it is shown in Fig.5.
 Fig.7A depicts a side view of conventional roofing support in the case of collapse of the upper layer of coal. Fig.7B depicts a side view of the end roof support in accordance with the present invention. Fig.7C depicts a side view of the roof strut pair in accordance with this invention.
 Fig.8 depicts a side view of the roof support unit of the main roadway of a longwall panel in accordance with this invention.
 Fig.9A depicts a top view of the support of the principal passage of a longwall panel shown in Fig.8. Fig.9B depicts an end view of the roof support unit of the main roadway of a longwall panel shown in Fig.8.
 Fig.10 depicts an exploded view in perspective of racks lock-up part of the roof support unit of the main roadway, shown in Fig.8.
 Fig.11 depicts a schematic view in perspective of the roof support unit of the main roadway, shown in Fig.8, without falling plates.
 Fig.12A depicts an alternative embodiment of the roof support unit of the main roadway, shown in Fig.11. Fig.12B depicts a view in perspective of the roof support unit of the main roadway, shown in Fig.12A, on which the specified node is shown in position with advanced forward line.
 Before considering the detailed description of one Varian�and execution of the invention, it should be understood that the practical application of the invention is not limited to design elements and layout options of the component parts is presented in the following description or illustrated in the drawings. The invention may have other embodiments of and be implemented or performed in various ways. In addition, it should be understood that the language and terms used in this document are used for descriptive purpose only and should not be construed as restrictive. The terms "including" and "containing" and their derivatives are used in this document with the same coverage as the items listed below and their equivalents, and additional elements. The term "comprising" and its derivatives are used in this document from the point of view of covering only the items listed below and their equivalents. In addition, it should be understood that terms such as "front", "rear", "left", "right", "upper" and "lower," etc., are used for convenience and should not be construed as restrictive.
The MOST PREFERRED embodiment of the
 Fig.5 depicts a schematic view of various roofing supports, which form cutters installation of continuous extraction in accordance with the present invention. Ironman installation of 200 continuous extraction contains IU�ISA least one cantilever roof prop 204 mates one cantilevered end of the roof support 208 adjacent to the support 204, and at least one other shell downhole bearing 212 adjacent to the support 208. More specifically, in the depicted embodiment, the Ironman setting continuous extraction contains three roof supports 204 mates, one end of the roof support 208 and at least one roofing downhole bearing 212. Several of the supports 212, typically placed near the specified pillar 212, not shown, but implied. Also there is a roof support 216 of the main roadway, adjacent to the end of coal-cutting machines containing these three pillars 204.
 In Fig.5 embodiment, the bearing 204 mates has a longitudinal length 205, and end support 208 has a longitudinal length 209, which is significantly less than the specified longitudinal length 205 roofing support the pairing. Roofing downhole bearing 212 also has a longitudinal length 213, which is significantly less than the specified longitudinal length 209 end of the roof support. This creates an effective line 211 of collapse at an angle to the coal face, which helps to reduce the pressure of the dam at the end of the slaughter with the increase, therefore, the stability of the roof supports 216 of the main tunnel.
 Fig.6 depicts a schematic view of roof supports in perspective showing the front armored face conveyor 211 and rear and�resistance face conveyor 220. Fig.7A, 7B and 7C depict side views of three different types of supports pairing shown in Fig.4. Fig.7A shows a conventional downhole bearing 212, which is essentially the same as described in connection with Fig.1, but further comprises a tail section 218, which closes the rear reinforced conveyor 220. Fig.7B shows the proposed end of the roof support 208, and Fig.7C shows the proposed bearing 204 mates.
 Fig.8 depicts a side view of the roof support 216 of the main roadway. Specified bearing similar to the normal support of the main roadway, but has a few important differences. As conventional bearing, main bearing drift contains one pair of separate, but located adjacent interacting with soil substrates or pontoons 230 and 232 (see Fig.9A and 9B). On each of the pontoons 230 and 232 is provided with a support strut 234 and 234' (see Fig.8) which is pivotally attached to the pontoon and pivotally attached to interacting with a roof beam. Unlike conventional supports the principal passage two adjacent, but spaced pontoons 230 and 232 support interacting with a single roof roof beam device 240 (see Fig.9B and 11), which covers both pontoons 230 and 232. To allow movement of the pontoons 230 and 232 up and down relative to each other, but maintaining them arranged next to each other in the front and rear direction�relations pontoons 230 and 232 blocked pivotally attached jumper 244.
 More specifically, the jumper 244 passes through the front of the pontoons at the level of the middle of their length and on the rear of the pontoons, as shown in Fig.8 and 9A. Each jumper 244 attached to each pontoon with the formation of joint 250, as shown in Fig.10. More specifically, the strap 244 is pivotally connected to each pontoon (for example, pontoon 230) by rigid joints 250, which supports the adjacent pontoons in close proximity to each other while ensuring the possibility of their move up and down relative to each other. More specifically, each end of the jumper 244 contains a rack or covered element 254 inserted into the covering element or the socket 270 attached to the pontoon. The slot 270 includes two spaced apart rigid plates 262 and 268 and two spaced apart walls 272 and 276, which are held between the plates 262 and 268 perpendicular to them. Combination plates and the walls forming the slot 270 to accommodate the rack 254 jumper. Through the connecting wall 272 and 276 passes the hole 280, with the corresponding hole in the rack 284 254 aligned with said hole 280 in the connecting wall when the rack 254 is inserted into the slot 270. Through holes 280 and 284 passes a bolt 288, fixing rack 254 in the slot 270. At the end of the bolt 288 has a means for fastening the bolt 288 in the slot 270, back�TES in the form of a cotter pin 290 and providing fastening bolt 288 joint 250. When the strut 254 is located in the slot 270, it is separated from the pontoon 230, so that the strut 254 can be rotated around the bolt 288 in the slot 270.
 To the outer pontoon roof supports 216 main drift away from other roofing supports attached articulated falling plate 294 (see Fig.8), which provides additional improvement. Specified falling plate runs along the length of the support 216 of the main roadway and provides additional protection for the roadway.
 the Following is a more detailed description of the various roofing supports, shown in Fig.5-10. Roofing prop 204 contains a rear pair of interacting with the soil base 300, the rear shield 304, rear interacting with a roof beam 308 is pivotally attached to the shield 304, and two spaced apart hydraulically operated rear support rack 312 (only one shown) attached between said rear base 300 and the rear beam 308. Roof support further comprises a pair of rear link 316 pivotally connecting the rear shield 304 with rear base 300, front interacting with the soil base 320, the front shield 324 front and interact with the roof beam 328 is pivotally connected to the rear beam 308. Between the front base 320 and the front beam 328 is attached four hydraulically operated front op�rye rack posted on couples 332 and 333 front and rear, with rear shield 324 is pivotally connected with the front base 320 via the console connection 336.
 end of the cantilever roof bearing 208 contains interacting with soil base 340, the shield 344 interacting with the roof beam 348 pivotally attached to the shield 344, and four spaced hydraulically operated front stabilizers 352 connected between said base beam 340 and 348. End roof support 208 also contains a console connection 356 pivotally connecting the shield 344 base 340, and two spaced apart hydraulically operated rear support rack 353 connected between the base beam 340 and 348. The rear support stand 364 spaced from the two spaced front struts 352.
 end of the roof support 208 also includes a rear belt drive 370 pivotally attached to the base 340, which are pivotally attached to the rear conveyor drive 370, and the front conveyor actuator 374, wherein the base 340 is also pivotally attached to the specified front-wheel drive 374. End roof support also includes interacting with the short roof pivot beam or the tail portion 380, located at the rear of the specified block.
 Downhole bearing includes interacting with the soil base 384, Sch�t 388, interacting with a roof beam 392 pivotally attached to the shield 388, and two spaced apart hydraulically operated support legs 396 (only one shown) attached between said base 384 and a beam 392. Shield 388 is pivotally connected to the base 384 via the console connection, 398.
 Bearing 216 main roadway has two spaced apart side 500 and 504 (see Fig.9B), each of which has a rear interacting with soil base 508, hydraulically operated rear support rack 234 attached to the specified base 508, and a rear shield 516. Rear shield 516 is pivotally connected with the rear base 508 via the rear console connection 520. To the rear of the base 508 is attached secondary interacting with soil base 524 is attached to a hydraulically operated secondary support columns 528. To the average base 524 is pivotally attached to the front of interacting with the soil base 530 is attached to a hydraulically operated front bracket 234'.
 Roofing bearing 216 principal passage further comprises a rear interacting with a roof beam 540 pivotally attached to the rear shield 516, spaced hydraulically operated rear supporting legs 234 of the parties to the attached between the rear grounds 508 and rear beam 540. To the rear beam 540 is pivotally joined�of Diana medium interacting with a roof beam 550, in this case spaced support columns 528 sides attached between the middle grounds 524 and the average beam 550. To the Central beam 550 is pivotally attached to the front of interacting with a roof beam 560, spaced hydraulically operated front stabilizers 234' of the parties to the attached between the front grounds 530 and the front beam 560. Anterior, middle and posterior interacting with soil from the base of each side of the joint with the formation of each of the pontoons support 216 of the main tunnel.
 In alternative roofing reference node 400 of the main roadway, shown in Fig.12A and 12B, the first cantilever roof bearing 404 has two spaced apart sides, each of which contains the first interacting with the soil base 408, the first shield 412, the first interacting with a roof beam 416 pivotally attached to the first shield 412, and the first hydraulically operated supporting rack 420, connected between said first base 408 and the first beam 416. The first cantilever support 404 also contains the first console connection 420 pivotally connecting the first shield 412 with the first base 408. The first roof support 404 facing the second cantilever roof bearing 424 containing the second interacting with soil base 428, the second shield 432 and second cooperating with the roof beam 436, Sharn�RNO attached to the second shield 432. A second beam 436 is located adjacent to the first beam 416 and inserted into it. Between the second base 428 and the second beam 436 joined by a second hydraulically operated leg 440, wherein the second shield 428 is pivotally connected to the second base 428 using the second console connection 444. In the depicted embodiment, there is another hydraulically operated leg is also connected between the second base 428 and the second beam 436. Interacting with roof beams and shields each side of the roof supports 404 and 424 are integrally formed plates, which cover the gap between the two sides of the roof supports and attached to a specified parties.
 More specifically, the first beam 416 includes two spaced apart plates 450 and the second beam 436 contains the plate 454, located between the spaced plates 450 specified first beam. Due to the fact that the roof supports 404 and 424 represent separate unconnected support, roof support unit 400 of the principal passage can promote one roof prop and then promote another by facilitating the continuous extraction process.
 Various other features of this invention set forth in the following claims.
1. Roofing support of the principal passage having two spaced apart sided�;
each of which contains
rear interacting with the soil base,
hydraulically operated rear support rack attached to the specified the rear crossmember, rear shield,
rear link pivotally connecting the specified rear shield with the specified rear interacting with the soil base,
average interacting with soil basis, coupled with the specified rear base,
hydraulically operated average basic rack connected to the specified average basis,
front interacting with soil basis, coupled with a specified average basis,
hydraulically operated front of the support leg connected to the specified forward basis,
rear interacting with a roof beam pivotally attached to the rear shield, but said spaced hydraulically operated rear support stand of the parties attached between said rear bases and the rear beam,
medium interacting with a roof beam pivotally connected with the said rear beam, but said spaced hydraulically operated secondary support columns specified parties connected between said middle grounds and the middle beam, and
front interacting with the roof beam pivotally attached to the CP�days interacting with the roof beam, these spaced hydraulically operated front stabilizers such parties is attached between the front grounds and the front beam,
in doing so, each of the rear interacting with soil bases pivotally attached to the rear bulkhead to each of the medium interacting with the soil bases pivotally attached average jumper and to each of the front interacting with the soil bases are pivotally attached to the front bulkhead.
2. Roof support according to claim 1, in which the specified swivel jumper with each of interacting with the soil grounds contains a rack jumper, pivotally attached between two rigid plates attached to the corresponding interacting with the soil base.
3. Roof support according to claim 1, containing a falling plate attached to the side of the specified roofing supports the main tunnel.
4. Roofing support of the principal passage containing rear interacting with the soil base, rear shield,
rear interacting with a roof beam pivotally attached to the specified rear shield,
two spaced apart hydraulically operated rear support strut attached between the rear base and a rear beam,
zadny� communication, pivotally connecting the specified rear shield with the specified rear interacting with the soil base,
front interacting with the soil base, pivotally United with the specified rear base,
front interacting with the roof beam pivotally attached to the rear of interacting with the roof beam,
two spaced apart hydraulically operated front stabilizers attached between said front base and the front beam,
moreover, the specified rear interacting with soil base includes two spaced rear of the pontoon and the rear crosspiece, pivotally attached to each of the rear pontoons and
specified front interacting with the soil base includes two spaced front of the pontoon and the front crosspiece, pivotally attached to each of the front pontoons.
5. Roof support according to claim 4, in which the specified swivel jumper with each of the pontoons includes a rack jumper, pivotally attached between two rigid plates attached to the respective pontoon.
6. Roofing support containing
first interacting with the soil base, the first shield
first interacting with a roof beam pivotally attached to the first shield,
first hydraulically operated supporting �toyko, connected between said first base and a first beam
the first linkage pivotally connecting the first shield with the first interacting with the soil base,
second, interacting with soil base adjacent to the first base, but separated from him,
the second shield
second cooperating with the roof beam pivotally attached to the second shield,
a second hydraulically operated supporting rack, connected between said second base and a second beam,
the second linkage pivotally connecting the specified second shield with the specified second interacting with the soil base, and the jumper pivotally attached to the specified first interacting with the soil base and pivotally attached to the specified second interacting with the soil base.
7. Roof support according to claim 6, in which a specified first interacting with a roof beam and said second cooperating with the roof beam is connected with the formation of a single interacting with the roof beams.
8. Roofing reference the node that contains the
the first roof support containing a first interacting with the soil base, the first shield
first interacting with a roof beam pivotally attached to the first shield,
first hydraulically operated supporting stand�, connected between said first base and a first beam, and
the first linkage pivotally connecting the first shield with the first interacting with the soil base, and a second roof support containing the second interacting with the soil base, the second shield,
second cooperating with the roof beam pivotally attached to the second shield located adjacent to the specified first beam and inserted into it,
a second hydraulically operated supporting rack, connected between said second base and a second beam, and
the second linkage pivotally connecting the specified second shield with the specified second interacting with the soil base,
moreover, the specified first interacting with the soil base and the specified first interacting with a roof beam spaced from the specified second interacting with the soil base and said second cooperating with the roof beam,
the given first roof support and said second roof support is capable of independent movement relative to each other.
9. Roof support unit according to claim 8, in which the specified first interacting with a roof beam contains two spaced apart plates, and said second cooperating with the roof beam contains a plate located between the decree�prisoners who had been posted to the plates of the first beam.
SUBSTANCE: invention relates to a protective visor for the shield-type powered support for underground development of massive material. The protective visor comprises a plate (2) and a support structure (5) which is welded under the plate (2) and comprising a plurality of longitudinal beams extending from the rear area (1A) of the visor to the front area (1B) the visor. And at least two longitudinal beams consist of profiled supports (6, 16) having an upper flange (7, 17) of the profile and a wall (9, 19) extending perpendicular to the upper flange (7, 17) of the profile, and the plate (2) and the profiled supports (6, 16) are inclined upwards in the front area (1B) of the visor.
EFFECT: weight reduction with simultaneous increase in the flexural strength of the protective visor of the shield-type powered support.
15 cl, 7 dwg
SUBSTANCE: invention relates to the protective shield for shield support and method of its manufacture. Proposed protective shield has the cover plate 14, two connecting hinges 21 for connecting the protective shield with roof beam and pair couple 15 of side plates with two side plates (13, 16) with bayonet sockets (11, 12), respectively, for fixing levers of articulation linkage on the protective shield. In this case, each connecting hinge (21) for roof beam is the integral part of separately manufactured elongated structural assembly (20). Besides, the structural assembly at the front end has the projecting lug for the pin, and enters by the rear end into the intermediate space between the side plates (13, 16). In this case, the structural assembly (20) is rigidly welded to the side plates (13, 16) by means of welded seams at the joints between the structural assembly (20) and side plates (13, 16) and / or to the cover plate (14) by means of welded seams at the joints between structural assembly (20) and cover plate (14).
EFFECT: increase of bearing capacity of the protective shield under the influence of bending and torsion force, as well as simplification of process of its manufacture.
20 cl, 16 dwg
SUBSTANCE: present invention relates to a collapsible prop of mine timber. The proposed collapsible prop comprises a first metal pipe extending from the base of mine opening, having a first part with a smooth first outer diameter and a second part with a second outer diameter. And the second part comprises at least one metal roller welded to the first part, and a metal ring welded to the first part. The height of the second part from the first is greater than inner diameter of the second pipe by at least 0.15 inches (4 mm). The yield limit of the first pipe is greater than the yield limit of the second pipe. The second metal pipe is located near the first part and extends to the roof of the mine opening, and when the second pipe receives a load from the roof of mine opening, the second part deforms the second pipe and expands the second pipe, creating resistance to the load from the roof of mine opening.
EFFECT: method of creation of timber of the roof of mine opening and construction method of collapsible mine prop is proposed.
18 cl, 15 dwg
SUBSTANCE: proposed complex is equipped with powered roof support section displacement jack attachment drives, rood support being displaced to pans of face conveyor with hydraulic cylinders of adjustment at different inclinations of cleanup face line. It allows a permanent location of face conveyor relative to the point of rock transfer to face loading station. It incorporates spacing-sliding transfer mechanism, guard board elongated part and support section shelter turn drive. Note here that support sections with pans are articulated to make triple units with single control unit. Said powered roof support section displacement jack attachment drive is composed of articulated rabbet joint including perforated grooved guide secured to the pan and moving bracket with fixed rabbet-thrust interconnected by adjustment cylinder for mutual displacement. Overlap shelter is equipped on face chest with shutter extension drive to vary cleanup face line position. It is composed of a set of plate articulated by extending rabbet frame to be extended by hydraulic cylinders articulated with rabbet frame and shelter. Rabbets are articulated with said plates.
EFFECT: higher efficiency.
10 cl, 7 dwg
SUBSTANCE: powered roof comprises basic and linear sections. Note here that manipulator with grippers is mounted at basic section base to displace said linear section after face advance and for installation and dismantling works. Besides, basic section goaf guard is composed of sliding pneumatic blade with the set of air cushions makes a thrust element that cuts off rock structures hung above the stull. Linear section incorporates air post as a thrust composed by a polymer film sleeve reinforced by polymer rings to rest on hardware compartment capsule. Linear section beam is coated with resilient polymer ply to facilitate the contact between lining and roof block structures.
EFFECT: higher stability, ease of installation and dismantling.
SUBSTANCE: invention is related to assembly of a shield support for underground mining, comprising a shield canopy and at least one floor beam as elements of the support surface, which are hingedly connected and may be pressed to the rock with the help of at least one hydraulic cylinder, which is maintained in support troughs on the shield canopy and the floor beam. At the same time each element of the support surface comprises a welded structure from components welded to each other. At least one element of the support surface comprises at least one hollow metal boxy profile filled with a solid substance as a component of the support structure. The invention also relates to a configuration of the floor beam and/or the shield canopy with at least one hollow metal boxy profile filled with a solid substance, preferably, concrete.
EFFECT: provision of high load maintenance without increasing total weight.
44 cl, 8 dwg
SUBSTANCE: device for making recesses in fully-mechanised working face involves an actuating element, drilling rod rotation and supply mechanisms, load-carrying frame, drilling cartridge, screw stems and fastening mechanism. The latter is made in the form of suspension mechanism consisting of hydraulic jacks, the cylinders of which are hinged on the covering of the support section, and their stocks are attached to the load-carrying frame, and a detachable support.
EFFECT: improving the operating efficiency.
FIELD: machine building.
SUBSTANCE: device for connection of covering with enclosure of powered support section includes coaxially located eye-lugs of retractable sides of the covering and enclosure, which are hinged with pins, the diameters of holes of which are larger than the pin diameter. Two coaxial cylindrical bushings with projections and cavities are installed in eye-lugs of retractable sides of covering and enclosure. At that, bushings are provided with possibility of being attached to each other by turning the external bushing, the projections of which are engaged with projections of internal bushing, thus preventing their axial displacement relative to each other, with further fixation of that position by means of fixing pin. Besides, pin is installed into mutually coaxial holes made in bushings and radially offset relative to their rotation axis.
EFFECT: reduction of metal consumption, as well as labour intensity with regard to assembly of connection of covering and enclosure in case of repair or erection, and removal of the support section.
4 cl, 4 dwg
SUBSTANCE: section of powered support of supporting-enclosing type includes bottom, four-link chain, hydraulic props and enclosing element and supporting element, which are connected to each other. Besides, support section includes mechanical spacers located between stock of hydraulic props and supporting element, active cap with supporting element and angular telescope-type adjusting jack. Active cap has the possibility of being moved upwards by means of hydraulic cartridges, and angular adjusting jack serves for lifting of supporting element with active cap, thus providing transformation of supporting element with a cap and enclosing element to a single enclosing element.
EFFECT: higher labour efficiency due to reducing the time costs on the support installation during change-over to development of thicker or thinner formation.
SUBSTANCE: mining module includes section of powered support that consists of foundation, hydraulic support and a canopy. The canopy is attached to mining device on the goaf side of which there are swaying hydraulic cylinders. Note that mining device is done in the form of manipulator with strikers assembly with shearing elements from bottom-hole side that is equipped by hydraulic cylinder of strikers assembly rotation and hydraulic cylinder of manipulator rotation. Note that rotation hydraulic cylinder is pin-jointed by goaf side with platform capable of movement along the canopy of powered support section with the aid of feeding hydraulic cylinder.
EFFECT: mining module provides the possibility to perform coal drawing regarding coal mass cross stratification and allows coal getting by large shear that reduces the required cutting force, decreases specific energy consumption, increases productivity and excludes coal overmilling.
SUBSTANCE: method to fix mines supported at the mined space border includes arrangement of mines with fixation of their contour by an anchor support, installation of a strengthening support, a waste-edge protective chock, at the same time the strengthening support additionally includes deep-laid anchors, some of which are fixed in rocks that are not involved into active shifts after the first lava, besides, deep-laid anchors are installed upstream the zone of active influence of temporary reference pressure of lava.
EFFECT: less displacement of roof rocks, reduced labour intensiveness and higher safety of works.
SUBSTANCE: invention refers to mining engineering, and to underground ore deposit mining technology. Layer development method of deep diamond leads with diamond ore cavities available in mine take circuits includes mechanical development of upper layer with chambers with the following development of support solid blocks, and by erecting a flexible covering, and development with modular break system of lower layer which includes diamond ore cavities. Flexible covering is mounted only above diamond ore cavities. First, there mounted is a flexible covering on the soil of chambers being developed together with their development, then - on the soil of support solid blocks being developed together with their development, and after that flexible coverings of adjacent chambers and support solid blocks are connected to each other.
EFFECT: improving development efficiency owing to minimum losses and elimination of ore dilution when being discharged under flexible covering, and reducing volume of work owing to ore mining work combined with erection of flexible covering when developing chambers and support solid blocks.
FIELD: mining industry.
SUBSTANCE: present invention relates to mining and may be used for mining steep seams using the hydraulic method, with mined-out space filling. A controllable shield roof for mining steep seams with mined-out space filling includes hoists, jacks, a receiving device, cables, on which pipe pieces with lugs for the attachment of metallic plates are installed; a water-protection element, and "aprons". The shield roof cables are located in the centre, as well as at the roof and floor of the seam, and strengthened by jacks. Metallic plates are pivotally connected to the cables, a water-protection element and "aprons" being attached above the plates at the seam roof and floor sides.
EFFECT: efficient working of steep seams, decreased water-protection element mounting and dismantling work, reliable insulation of mined-out space.
FIELD: mining industry.
SUBSTANCE: method is based on positioning of current-conductive reflecting elements on surface of flexible separating ceiling and determining of position of flexible separating ceiling on basis of position of current-conductive reflecting elements by pulse radio-location from mine above cleaning pit. Current-conductive reflective elements are made in form of set of elements, forming a solid reflecting surface or system of reflecting elements, being a complex target. It is possible to use, as current conductive reflective element, metallic shavings, and also portions of metallic pipes or stripes or angles, welded cross-like. It is possible to use solid metallic mesh or its portions. Metallic set can be coated.
EFFECT: higher precision.
SUBSTANCE: complex comprises a receiving wedge part with a loading module, a hopper for exploding and loading, an unloading scraper part, a self-movement mechanism, a pump station, a control panel, a hydraulic manipulator with a drilling machine on a portal trolley moving along a loader column, a safety support moving along guides at hopper boards with the help of sliding carriages. At the same time the inner part of guides at boards of the hopper for exploding and loading is arranged in the form of a geared rack, and wheels of sliding carriages of the safety support - in the form of geared wheels moving along the rack, besides, movement to geared wheels is transferred from electric drives installed inside sliding carriages, and their supply is provided by electric cables wound onto drums installed in a tail part of the hopper for exploding and loading and having a mechanism of automatic winding making it possible to pull a cable from a drum as sliding carriages move along the hopper to the bottomhole, and to wind the cable back onto the drum as sliding carriages move away from the bottomhole.
EFFECT: improved design of a tunnelling exploding-loading complex, reduced labour intensiveness and higher efficiency of tunnelling works.