RU2200843C2 - Process to support and control over roof in breakage face, support to implement this process, mechanism for telescopic tightening of clearances in roof and rock burst, connection of bases of sections, guiding beam of support, mechanism to spread sections of support, mechanism to collapse support, deflector of support floor - Google Patents

Abstract

FIELD: coal industry. SUBSTANCE: this group of inventions is meant for underground mining of coal deposits with use of cleaning machines including powered face supports, excavation sets and face conveyers. Process includes attachment of support following movement of excavation set without unloading, frontal movement of conveyer and alternating unloading of one third of all sections with their advance towards face and control over them from central control desk without presence of miners in face, full run of each deflector from rear to forward position by value of capture of excavation set with cross support of strip of roof by command of control cam linked to excavation set and with speed of movement of set, frontal transfer of flight on to face with set cutting new way. Deflector is thrown into extreme rear position before transfer of each section to face. Support comprises sections including floors, fences, props, bases, aids tightening clearances in roof and rock burst. All members of sections have width equal to 0.5 width required to achieve needed speed of fixing after moving excavation set. Sections are asymmetrical in left and right mirror versions and are interjoined by pairs with arrangement of aids for telescopic tightening of clearances in roof and rock burst inside moved pair of sections. Mechanism for telescopic tightening of clearances in roof and rock burst has horizontal gate positioned under cantilever of upper sheets between floors and/or fences of two adjacent sections jointly moved, guides in the form of two plungers and guiding screws and extension aids in the form of compression springs put inside plungers. Connection of bases of sections includes front shackle linked to nose ends of two bases and moving jack joined to charging end of guiding beam located between bases. Guiding beam has body in the for of two cylindrical bars with front and rear tips which front ends are intercoupled by means of front tip and which rear ends are coupled to bases of support which are fitted with front shackle with bracket. Mechanism to spread sections of support has floor, fence, prop, support base and ties. Prop comes in the form of three or four tubes inserted one into another, ground over outer diameter and mounted for contact with guiding bushings only. Second and third tubes have bottoms with non-return valves letting working fluid pass inside spaces of tubes. Mechanism to collapse support includes props, floor with fence, ties linking them to base in the form of double balance with H-shaped stiffening lintels connected to brackets of bases and to fences of floor and horizontal jacks hinged to brackets of bases and to center part of balance. Baffle of floor in support has body connected to body of floor, drive jacks, balances intercoupled in sequence. Face balance is tied up to body of baffle and center hinge and charging balance is linked to center hinge and body of floor. EFFECT: simplified design and increased operational reliability. 8 cl, 4 dwg

Description

 The present invention relates to the coal industry and is intended for underground mining of coal deposits using treatment plants, including mechanized longwall supports, mining combines and face conveyors.

 A known method of fastening and controlling the roof using roof supports of the "charged" type M138, M144, M142, including sequential fastening of the roof following the movement of the harvester by unloading and moving sections of the lining with subsequent wave shifting to the bottom of the conveyor pan with subsequent cutting of the combine onto a new road by shunting combine movements along the ends of the lava (oblique races).

 The disadvantage of this method is the low speed of the fastening operation, limiting the feed rate of the combine, the adverse effect on the roof of the combination in the same zone of the process of cutting the ledge of the face and the operation of unloading the lining section, increased power losses for the movement of the scraper chain during the wave movement of the conveyor stand (( 1) NL Razumnyak, BK Myshlyaev, The main directions of development of technologies and means of complex mechanization of treatment works for mining flat coal seams. Mining machines magazine, January 20 01, p. 38).

 The most advanced technical solutions in world practice are American treatment plants with MTA-type supports with a JOY combine and a JOY-type conveyor. So at the Minetainniir mine such a complex produced 7.92 million tons of coal per year with an average daily production of 21.7 thousand tons. and the average speed of the combine 10-12 m / min ((2) ibid., p. 39).

 To achieve this fastening speed, it is necessary that the freshly exposed roof behind the combine be compressed with a technical speed of the order of double operational, i.e. up to 20 m / min or with the time required to extend the lining no more than 3 s / linear m.

 Due to the fact that the new roof supports do not reach the world level in terms of fastening speed, the developers recommend increasing the section width to 1.75 and 2 m ((3), ibid., P. 36), use two combines instead of one, and extend the roof support through one section ( p. 38) and others.

 However, it is unrealistic to broaden the sections due to their non-transportability at small sections of our drifts and stands in the trunks; two combines are not provided with coal passing from one combine under the body of another; pulling out through one section is difficult both physically and technically, without unloading the neighboring main sections.

 In the future, it is recommended to switch to uncharged roof support sections that are pushed to the stand and use shear tops for weak roofs or retractable ones for stable roofs (p. 39).

 However, this analogue does not solve the problem of accelerated fastening of the order of 3 s / m due to the non-guaranteedness of each extension without unloading the main section with undefined chip resistance or the slope of the overlap, usually 3-5 degrees, with a horizontal freshly cut roof.

 A known method of fastening and controlling the roof in the face and overlapping with swivel visors, providing a roof pickup at high speed due to the swivel ejection of the visor through the air without resistance. This method can be considered as a prototype of the invention ((4) A.M. Dolinsky. Patent of the Russian Federation 2156359 dated January 20, 1999 "Overlap of powered roof supports and the method of attaching and controlling the roof in the face").

 The disadvantage of the prototype is the presence of two rotary visors that increase the total time for picking up the roof, and the large dimensions of the device in height, which is applicable only on formations of high power.

 The objective of the invention is to eliminate the disadvantages of the prototype, increasing the speed of fastening of the roof and simplifying the design.

 This problem is solved by the fact that the method of fastening and controlling the roof in the working face, including sequential fastening of the roof following the movement of the combine using the visors of the floors, without unloading and moving the main part of the sections in the zone of breaking coal, after which the conveyor is moved from the central control panel on the drift without the presence of people in the working face, then one-third of all sections are alternately unloaded and their movement to the face also from the central control panel without the presence of people in the face, and this is done in such a way that each visor is thrown full speed from the rear to the front by the amount of capture of the combine with the capture of the entire freshly exposed roof strip on command from the control cam connected to the combine and at a speed corresponding to the speed of the combine, and the frontal movement of the stand to the face is carried out together with the frontal notch of the combine on the new road, and the movement of each section to the face is preceded by the ejection of the visor to its extreme rear position, and they move forward one full step, leaving one aisle for people and a combine trolley in front of the racks, and in case of interruptions in mining operations, visors can be thrown forward from the rear position to tighten the upper face pack and ensure that the roof surface is completely tightened by one grip already wide, than in ordinary complexes.

 The first-generation mechanized lava supports of the OKP, M81, M87, M97, MK and Donbass are known, which were first developed in the USSR in the 50s of the last century and were produced until the 80s ((5) A.A. Orlov, S.G. Baranov, B.K. Myshlyaev, Fastening and roof management in complex mechanized treatment faces, M., Nedra, 1993, p. 36).

 The indicated supports were designed for widespread use in the mining and geological conditions of Mosbass, Donbass and Kuzbass.

 However, these supports were discontinued due to the insignificance of resistance, small preliminary spread, large exposure of the roof, their lack of an actively-controlled console, insufficient fastening of the roof after high-speed and powerful shearers, incomplete protection of the roof support from the penetration of collapsed rocks into the bottomhole space and others ((6), ibid., p. 38).

 As a result of research in the USSR and abroad, the latest generation supports were developed and introduced, such as M138, M144, M146, M137.

 An increase in the fastening speed in the supports of the last generation is achieved by broadening the support sections to 1.5 m, which is justified for foreign supports supporting the use of large section drifts there, and for transporting inclined Bremsbergs to the surface of mines or wide lifting vessels in mine shafts.

 As for the obsolete mine fund of Kuzbass, Pechora, Moscow Region and others, it is characterized by insufficient width of drifts and narrower lifting stands in the trunks, which does not allow normal transportation of support sections 1.5 m wide.

 Thus, there was a contradiction between the desire to increase the width of the sections to increase the speed of fastening the roof and the transportability of the sections when remounting the lining from one lava to another or when issuing sections to the surface for repair and maintenance.

 The objective of the invention is to overcome this contradiction and simplify the lining.

 This problem is solved in that the lining sections, including ceilings, fences, racks, bases, ties and means for tightening the gaps on the roof and blockage, are designed in such a way that all the elements of the sections are made reduced by the terms of delivery of a width equal to 1/2 of the width required to achieve a given fastening speed after a moving combine, the sections are structurally asymmetric in the left and right mirror versions and are interconnected in pairs for joint pairwise movement with the placement of media TV telescopic tightening of gaps on the roof and blockage only inside a movable pair of sections.

 Known mechanisms for telescoping tightening gaps that prevent the penetration of rock from the roof and blockage into the working space, made in the form of retractable sides that are extended by hydraulic jacks ((7), ibid., P. 199).

 The scheme of these mechanisms includes powerful angular structures, guiding rolling pin, two or three hydraulic jacks with control units and hydraulic wiring. The top sheets of the retractable sides are placed above the top sheet of the floor housing, in direct contact with the roof. At the same time, the roof pressure is often realized on retractable sides, i.e. on the console when placing racks only under the ceiling itself.

 The drawback of drawbacks is their complexity and weight due to the heavy loads and dimensions of the side sheets, taking into account the mutual displacements of neighboring separately movable and bursting sections. The need to have powerful retractable jacks for the sides to extend the clamped top sheets and the need for additional time to manage these jacks is an organic disadvantage of the mechanisms used.

 The objective of the present invention is to remedy these disadvantages and simplify the design.

 This problem is solved in that the mechanism of telescopic tightening of gaps on the roof and blockage, including a horizontal overlapping sheet, guides and drawers, is designed in such a way that the horizontal sheet is made in the form of a separate gate located between the ceilings (fences) of two adjacent jointly movable sections, located under the consoles of the upper sheets of ceilings (fences), the slide rails are two plungers of adjacent ceilings, interconnected and with the gate horizontally fingers, as well as guide screws on the lateral ends of the ceilings and fences, located in the direction along the lava and having heads restricting the relative stroke of the gate, and the extension means are made in the form of compression springs embedded inside these plungers.

 It is known the connection of the bases among themselves, including two earrings located at the bottom and at the bottom end of the bases. The front earring is located above the intersection beam, and the rear earring is located near the soil and extended to the side of the blockage to place the motor jack in front of it in its extended position, when it does not fit in the dimensions of the extended section ((8) in the same place, p. 234, Fig. 2).

 The disadvantage of the prototype is the difficulty when working on weak soils, when the subsidence of the base into the soil is limited by the gap from the earring to the beam, and the location of the rear earring near the soil and the jack on it prevents the bayonet from exiting and limits the length and stroke of the motor jack.

 The objective of the invention is to remedy these shortcomings.

 This problem is solved in that the connection of the bases of the sections, including two bases and connecting earrings, is made in such a way that the front earring is connected to the nose ends of the bases by horizontal hinges located in the dimensions of the height of the bases with the earring located below the beam housing and the motor jack rod is attached to the bracket the front earring in its middle part, and the rear (obstructed) earring is not connected to the section jack; it is lifted from the ground to exit the bayonet from under the lining and has an inclined guard a bottom for protection against penetration of the rock from the side of the blockage.

 The design of the guide beam of the support sections is known, for example, the M138 support, which is a body that is located in the plan between two skis of the bases and is connected from the bottomhole side to the rear side of the conveyor stand, and from the obstructed side it is pivotally connected to the eye of the motor jack, which is arranged sequentially behind the beam of the stavka, is connected by the tail of the cylinder with the rear earring of the bases ((9) in the same place, p. 234, Fig. 9.2).

 A disadvantage of the known technical solution is the large length of the serial chain: the hinge of the stand, the beam, the hinge of the beam-jack, the jack in the extended position, the hinge of the beam-earring. This length is hardly placed in the four-post M138 lining, and in the M137 lining it does not even fit in the lining and you have to release the base earring outside the lining towards the block ((10) in the same place, p. 219, Fig. 9.1).

 The second disadvantage of the known beam scheme is the irrational use of the power characteristics of the jack, which in this scheme puts forward the support using the rod cavity of the jack when there is not enough force, and the use of the piston cavity of the jack to feed the stand to the bottom when the pump station capacity is not enough, and its pressure excessively.

 The third disadvantage of the known scheme is the possibility of losing longitudinal stability, working to compress the specified power circuit with a hinge in the middle.

 The objective of the invention is to eliminate the disadvantages of the prototype and simplify the design.

 This problem is solved in that the guide beam of the lining, including the housing of the beam, its connection with the stand, on the one hand, and with a motor jack connected to the base of the lining, on the other hand, is designed in such a way that the body of the beam is made in the form of two cylindrical rods located in the horizontal plane and interconnected by front and rear tips, of which the front tip is connected to the stand rigidly in the vertical plane and articulated in the horizontal plane, the rear tip of the beam in made in the form of a ski supported by soil and connected to two axles of the cylinder of the motor jack, the rod of which is connected to a vertically arranged bracket of the front earring of the bases, which interacts with the rods of the beam located above the soil at a height (clearance), determined by the radius of the calculated formation hypsometry and span support base stav from the toe of his share to the rear support ski on the tail tip of the beam.

 The known mechanism of expansion of the lining section, made in the form of single or double sliding racks in the lining M137, M138, etc.

 The number and location of the struts in the lining section, the size of the preliminary strut and its resistance to the safety valve determines the mechanism of the lining strut. The main parameters of the lining, its resistance per square meter of the supported roof, the position of the resultant lining along the width of the supported roof strip determines the probability of reliable roof support (11) A.M. Dolinsky. Calculation of the mechanized roof support taking into account the probability of a change in the level and distribution of rock pressure, Sat USSR Academy of Sciences, ed. B.A. Frolov, Geomechanical aspects of the development of mechanized roof supports ", Novosibirsk, 1988, pp. 87-93. Physical and technical problems of mineral development. Novosibirsk," Science ", 1981).

 The parameters of the hydraulic extension of the rack, the resistance value of the lining are regulated and published by VNIMI depending on the thickness of the formation and the type of roof and are included in GOST 15852-82 ((13) see (12), p. 179).

 The hydraulic expansion ratio of the rack must be at least 1.9 according to GOST, however, due to the high manufacturing cost, racks with a single hydraulic extension and a mechanical extension that require periodic adjustment are often used. Foreign racks with triple hydraulic extension are also known, for example, in the Hemscheidt lining, but they are significantly more expensive to manufacture.

 The objective of the invention is to reduce the cost of manufacturing the racks and at the same time increase the hydraulic extension and increase the resistance of the lining or reduce the required number of racks per section of the lining.

 This problem is solved by the fact that the mechanism for spreading the lining section, including overlapping with a guard, a rack, a lining base and ties, is made in such a way that it is equipped with a plunger-type rack, triple (double) sliding, having four (three) pipes inserted into one another large diameter, polished only on the outer diameter, in contact only with the guide bushings, and the second and third pipes have bottoms with check valves with pushers that let the working fluid only inside the pipe cavity and open Currently drawdown stage under the influence of the rock pressure, and folding rack auxiliary operations performed when additional mechanism support frame disposed outside the rack.

 There is a known mechanism for folding the lining, working due to the use of rod hydraulic cavities in hydraulic stands, i.e. using double-acting hydraulic cylinders, similar to movement jacks, which are used both to move the conveyor to the bottom of the conveyor and to extend the support sections by pulling it to a fixed stand ((14) see ibid., p. 234).

 A disadvantage of the known mechanism is the complication of racks, which are relatively rare and only for shunting operations require forced reduction. At the same time, the cost of manufacturing racks, especially double telescopic racks, is greatly increased due to the need to roll out the inner surfaces of all stages of the cylinders.

 The objective of the invention is to remedy these shortcomings and simplify the design of the lining.

 This problem is solved in that the mechanism for folding the lining, including overlapping with the fence, the base, racks and ties, is designed in such a way that the connection of the lining of the lining with the bases is made using double balancers with H-shaped jumpers of rigidity, which are connected pivotally downhole ends with brackets the bases, and the block ends are pivotally connected to the fencing of the floors, and the lining is equipped with a horizontal jack of single telescopicity, which interacts in the horizontal direction lines with the midpoint of the balancers, the obstructed ends of which interact through the guards with overlapping in the vertical direction with a stroke that ensures complete folding of the section.

 There are known supports with retractable visors having guides, hinges and motor jacks in the main overlap, and are designed either to chip the top pack of the roof or to pick up the roof behind the combine in case of local outfalls or weak roofs.

 However, in the presence of a retractable visor, there is the disadvantage that when telescopic upper is extended, the main floor must be unloaded, because otherwise, the retractable visor may be jammed in the grooves and will not be able to pick up the entire surface of the freshly exposed roof. In addition, the presence of guide grooves makes it difficult to extend the lining after moving the stand, because this operation should be carried out simultaneously with the reduction of the telescope. As a result, work with "uncharged" lining cannot be productive.

 The objective of the invention is to remedy this drawback and provide an accelerated pickup of the roof behind the working combine without the need to unload the main section of the lining in the area of the combine.

 This problem is solved in that the roof support visor, including the visor body, the floor housing and the engine jack, is made in such a way that the visor body is connected to the ceiling body by a horizontal axis and two balancers connected in series, of which the downhole balancer is connected to the visor body and the middle hinge, the block balancer is connected with the middle hinge and the body of the floor, while the middle hinge is connected to the rod of the drive jack, the cylinder of which is connected to the body of the floor in such a way that in the folded state of the jack, the visor is located in the rear position under the nose of the overlap body in height in height, and after the jack is extended, the visor body turns 180 degrees forward with the actual level of the freshly cut roof being picked up.

 In FIG. 1 shows a General view of the lining section in the transverse plane in the folded and extended state of the overlap and the visor, FIG. 2 is a view from the side of the face in the folded and extended condition, FIG. 3 is a plan view in the folded and extended state of the visor, in FIG. . 4 - view K of the intersection beam.

 The lining section 1 includes a base 2 with an arm 3 and fingers 4; overlapping 5 with a guard 6, a rotary visor 7 with a drive jack 8 and an intersection gate 9, supported by horizontal fingers 10 of the plungers 11 and screws 12 with bounding heads; a rack 13 of triple sliding plunger type with cylinders 14, 15, 16 and a rod 17, balancers 18 interconnected by an H-shaped cylindrical connection 19 with a yoke 20 for a "corner" horizontal intersection jack 21. Between a pair of jointly moving sections, a guide beam is located below 22, consisting of a housing in the form of two rods 23 connected by a downhole tip 24 with a vertical pin 25 to connect with a sting 26 and a blocking tip 27 made in the form of a ski and connected to the pins 28 of the travel jack 29, the rod orogo hinge 30 is connected to the bracket 31 on the front support frame 32 downhole earring. The rear shackle earring 33 is raised from the soil in the form of an inclined guard 34. The conveyor stand 26 rests on the soil with a spaced base between the face support on the toes of the front share 35 and the rear ski 27 at the dam end of the beam. Such a spaced support base is designed for the stable operation of a particularly powerful shearer.

 The tightening of the gaps on the roof and the fence is carried out by the gate 9, which is located under the cantilever upper sheets of the overlap and the fence and is guided by two plungers 11 with compression springs embedded in them (not shown in the drawing) and horizontal fingers n type of screws with heads that limit the possible extension of the plunger and gate.

 Such protection does not contact the roof and does not require wide sides, since a pair of sections does not have transverse relative movements.

 The stand 13 has two check valves 36 with pushers in the cylinders 15 and 16 and is characterized in that the cylinders do not have an internal expansion, i.e. made cheaper. When the pressure from the roof is higher than the setting of the safety valve, cylinder 15 first sits down, and when choosing a stroke, the valve pusher in cylinder 15 touches the bottom and opens the fluid outlet from cylinder 15 with a drawdown of this cylinder. The same happens with the cylinder 16. In all cases, the resistance of the rack is the same and is determined by the valve setting and the area of the largest cylinder 15. The folding mechanism of the rack, which does not have stock cavities, is determined by an external device, consisting of a horizontal "angular" jack 21 located between clips 20 on the balancers and clips 37 on the brackets 3 of the base 2. When this jack is reduced, the balancers turn down and force the draft down the floor 5. In this case, both sections of the pair behave as one because they are interconnected at the bottom by two earrings planted on the fingers 4 and over the two plungers 11.

 The lining works as follows.

 As the combine 38 moves along the conveyor 26, the coal step is excavated from the face. When the combine is moving, the trolley 39, coupled to the combine with some lag, pushes the handle of the valve body 41, turning on the power of the piston cavity of the jack 8 with its fist 40, and throws the visor 7 from the rear position 42 to the forward position 43 by almost 180 degrees. Such a large angle of rotation is formed due to the operation of the four-link connected to the horizontal axis 44 of the rod, from which the bottomhole balancer 45 and the block balance 46 go, of which the fill balance is pivotally connected to the overlap body 5, and the bottom-hole balance is pivotally connected to the fourth link of the four-link, which is rotary visor housing 7.

 The visor is ejected through the air without resistance, so the jack 8 is made of small diameter and the extension time at a given throughput of hydraulic lines 47 is measured in seconds. After the strip of coal is removed, the front end is delivered to the bottom when pressure is applied to all rod cavities of the movement jacks 29. At the same time, the jack stem connected to the front base hook is stationary, and the cylinder is pulled forward and pushes the ski 27 with its pins and pushes through the beam 22 staking at the face In frontal movement of the staving to the face, the combine at the end of the sting is cut into the face with the possibility of a small shuttle movement and return to facilitate notching. Towards the end of the notch, the sections 1,4,7,10 .... etc. are remotely unloaded, comprising 1/3 of all sections by applying pressure to the piston cavities of the jacks of movement of 29 corresponding pairs of sections. In parallel, the same pressure is connected to the rod cavities of the jacks of 8 of these sections. The pressure in this line can only rise after all the visors 7 have been ejected to the rear position to the stop, and the movement of the section will be guided by sliding the front earring bracket 31 between the rods 23 of the guide beam 22. After that, each pair of sections will move forward to the bottom until the choice of stroke. At the same time, one walker will remain in front of the support supports for the movement of people and the trolley of the combine operator.

 Next, the cycle repeats, while the trolley moves along the rails 48, welded to the groove 49 of the combine cable layer.

 Thus, the complex operates with the presence of only one operator in the lava, which moves at any speed developed by a high-performance combine harvester with a capacity of about 1500 kW, manages coal extraction in terms of power and hypsometry of the formation and provides monitoring of automatic emission of visors to the face at a speed of about 2 s / P. m, and the processes of frontal delivery of the stand to the face and frontal extension of groups of sections are carried out from the central control panel located on one and the other drift, where the same lining operator is located during this period - the combine operator.

 At the same time, the lining and combine operator moves in a cart attached to the combine, using the remote control panel of the combine and dust-free air, which can be supplied via a hose from an air conditioner integrated into the combine, which is not found in any foreign complex.

 Thanks to this technology and design, results are achieved that exceed the achievements in world practice in terms of efficiency, productivity and labor comfort.

 Description of the thrust mechanism in operation and statics.

 The thrust mechanism works as follows. When the working fluid is supplied to the cylinder cavity 14, the working pressure also flows through the check valve 36 into the cylinder 15 and through the second check valve 36 into the cylinder 16, creating a preliminary active strut support in the roof, equal to the product of the pump station pressure (320 MPa) by the working the area of the guide sleeve F200 installed in the smallest diameter cylinder 16.

 According to GOST, the quality of the lining is determined by the ratio of the value of the preliminary support lining to the value of the passive resistance of the lining under the influence of rock pressure.

 The passive resistance of the lining under the influence of rock pressure is determined by the product of the area of the guide sleeve F300 installed in the largest cylinder 14 and the pressure of the safety valve (500 MPa).

 With the subsidence of the lining, the stroke in the cylinder 14 is primarily selected, because the fluid in the cavities of the cylinders 16 and 15 is closed by check valves 36 of these cylinders. With a complete choice of the stroke in the cylinder 14, its bottom is in contact with the pusher of the non-return valve 36 of the cylinder 15, opening a closed cavity of this cylinder, which begins to bleed the liquid into the cavity of the large cylinder 14 while maintaining a constant lining resistance, determined from the equilibrium conditions of the cylinder 15 and the specified product of the area by pressure. Similarly, there is a subsidence of the lining when choosing a stroke in the cylinder 15.

 Thus, the operation of the lining is carried out without the use of expensive struts with cylinders polished from the inside and with the use of pistons and twin rod cavities, which are practically not involved in the normal operation of the lining.

 Reducing the racks during shunting and installation operations that do not require much effort is done by a folding mechanism located outside the rack, using the ties of the lining and one horizontal jack into two sections, which is still needed as an angular jack to stabilize the slope of the floor.

Claims (8)

 1. The method of fastening and controlling the roof in the working face, including the sequential fastening of the roof following the movement of the combine using the visors of the floors without unloading and moving the main part of the sections in the coal breaking zone, after which they are made from the central control panel on the drift without the presence of people in the working face first, frontal movement of the conveyor stand and then alternately unloading one third of all sections and moving them to the face, characterized in that when attaching the roof after the movement of the combine each visor is thrown out in full swing from the rear to the front by the amount of capture of the combine with picking up the whole freshly exposed roof strip at the speed of movement of the combine by command from the control knuckle connected to the combine, frontal movement of the stand to the face is carried out together with the notch of the combine on a new road, and moving each section to the face is preceded by the ejection of the visor to its extreme rear position, and the sections are moved forward a full step with the front of the racks leaving one passage for people and the combine harvester yep.  2. The support, consisting of sections, including ceilings, fences, racks, bases, means of tightening the gaps on the roof and blockage, characterized in that all the elements of the sections are made with a width equal to 1/2 of the width necessary to achieve the required fastening speed after moving combine, sections are asymmetrical, in the left and right mirror versions and are interconnected in pairs for joint pairwise movement with the placement of means for telescoping tightening gaps on the roof and blockage only inside the movable ry sections.  3. The mechanism of telescopic tightening of gaps on the roof and blockage, including a horizontal covering sheet and means of extension, characterized in that the horizontal sheet is made in the form of a gate located between the ceilings and / or fencing of two adjacent jointly movable sections under the consoles of their upper sheets, guide rails made in the form of two plungers of adjacent floors, interconnected and with the gate by horizontal fingers, and in the form of guide screws located on the lateral ends of the floors and og azhdeny in a direction along the lava performed with the heads slide stroke limit, and means vydvizhki formed as a compression spring, nested inside said plunger.  4. The connection of the base sections, including the front and rear connecting earrings, the first of which is connected by horizontal fingers with two bases and one end of the motor jack, the other end of which is connected to the blocking end of the guide beam located between the bases, characterized in that the front earring is connected with the nasal ends of the bases, it is located below the guide beam of the lining and is connected by an arm to the rod of the motor jack, while the hinges of its connections are located in height you bases, and the rear earring raised above ground for culm output from the lining and is formed with an inclined protective shield for protection against rock penetration by the dam.  5. The guide beam supports, including the housing of the beam, made in the form of two cylindrical rods with front and rear tips located in a horizontal plane, the front ends of which are interconnected by a front tip, pivotally connected to the stand, and the rear - motor jacks with the bases of the support characterized in that the supports are provided with a front earring with an arm, the cylinder of the engine jack is made with two pins, the front tip is connected rigidly in the vertical plane articulated in a horizontal plane, the rear tip connecting the cylindrical rods of the beam is made in the form of a ski resting on the soil, connected to two axles of the cylinder of the motor jack, the rod of which is connected to the vertically located bracket of the front earring of the bases, interacting with the rods of the beam located above the soil on the height determined by the radius of the calculated hypsometry of the formation and the span of the supports of the base of the stav from the toe of its share to the rear support ski at the rear tip of the beam.  6. The mechanism for spreading the lining section, including overlapping, fencing, rack, lining base and connection, characterized in that the sliding rack is made in the form of four or three pipes inserted into each other, polished only by the outer diameter and made with the possibility of contact only with guide sleeves, and the second and third pipes have bottoms with check valves that allow the fluid to pass only inside the pipe cavity.  7. The mechanism of folding the lining, including overlapping with the fence, their connection with the base and racks, characterized in that the connection of the overlap with the bases is made in the form of double balancers with H-shaped jumpers of rigidity, which clips and horizontal hinges are connected by bottom-hole ends with brackets of the bases, and with the ends of the ends - with fencing of the floors, while it is equipped with horizontal jacks of single extension, the bottom ends of which are pivotally connected to the brackets of the bases, and the heaps - with the middle astyu beams to engage in a vertical direction through the fence overlay until complete folding support frame. 8. Roof overlap visor, including the visor case, connected to the overlap case by a horizontal axis and two balancers connected to the middle hinge connected to the rod of the drive jack, the cylinder of which is connected to the overlap case with the possibility of the visor in the rear position under the nose part of the overlap in it dimensions height when folded, the drive ram and a rotatable visor body forward at 180 ^o after razdvizhki driving jack with the actual level with a pickup ezhepodrublennoy roof, characterized in that the rocker sequentially connected, wherein the downhole balancer connected to the housing hood and the middle joint, and the gob - middle hinge and overlapping the housing.

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