Shield for extraction of thick flat seams with the release of coal
The invention relates to mining and is aimed at improving the safety and efficiency of works by softening the underlay or the interlayer thickness and coal production, as well as increasing the reliability of a design lining. The section consists of interconnected supporting and exhaust parts. The supporting part comprises a base U-shaped form, the hydraulic jacks on top of the buildings which secures the canister, which represents an alignment structure for adjusting the position of the overlap of the exhaust parts. The overlap of the supporting part of the section is a rigid frame having guides inside the cavity face of salivates and dammed retractable shield, which are operated by hydraulic jacks. On the top of the ceiling supporting parts are loosening knives. The final part consists of the base of the T-shaped form, which is connected to the base supporting part of the hydraulic cylinder along the axis of symmetry, legs, arched ceiling, which front edge is always on the guides of the box. In the ceiling there is a window (hatch) for the production of coal. 1 Il.
The invention otnosilosj coal seams with the release of coal underlay or the interlayer thickness.
Known mechanized shoring for excavation thick layers pocwoznynm face (as the USSR №826006, IPC E 21 D 23/00, 1976). contains linked sections of the upper and lower ledges.
The disadvantage of this lining is that work in the pit one ledge cannot be independent from the work of culling another ledge.
Closest to the technical nature of the proposed lining is mechanized shoring for excavation of thick layers with the release of coal (SU 1190055, IPC E 21 D 23/00, 1984), includes a base with a hydraulic cylinder movement, the hydraulic jacks, fence, hinge associated with overlapping, made in the form of a frame with an outlet opening and a hinged tray hydraulic cylinder control that supports the visor.
The disadvantage of this lining is stiff enough overlap.
The objective of the invention is to increase safety and efficiency of works by softening the underlay or the interlayer thickness and coal production, as well as increasing the reliability of a design lining.
The invention consists in the following. Shield for extraction of thick flat seams with the release of coal consists of interconnected supporting and exhaust parts, cocoadialog design guides for adjusting the position of the overlap of the exhaust parts overlap the supporting part of the section, representing a rigid frame having guides inside the cavity face of salivates and dammed retractable shield, which are controlled by the hydraulic Jack, loosening blades arranged on the ceiling above, the final part consists of the base of the T-shaped form, which is connected to the base supporting part of the hydraulic cylinder along the axis of symmetry, legs, arched ceiling, which front edge is always attached on the guide case, there is overlap window (hatch) for the production of coal.
The figure schematically shows the proposed posts after shifting the supporting part of the section.
The shield has a base 1 supporting parts, hydraulic jacks, shifting 2 supporting part, the hydraulic jacks 3 supporting part, the case 4, the overlap of the 5 supporting part, loosening the blades 6, the downhole salivating 7, obstruction retractable shield 8, a base 9 of the outlet part, gidrotartrat shifting 10 final part, the hydraulic jacks 11 exhaust side, an arched ceiling 12 of the outlet part, Luke 13 for the production of coal, tray (telescopic chute) 14, gidrotartrat 15 management tray, samovydvizheniya flaps 16, agreedwith 22 dammed pipeline.
Shield for extraction of thick flat seams with the release of coal consists of interconnected supporting and exhaust parts, consisting of a base 1 a-shaped, two hydraulic cylinders 2, shifting, four legs 3, on the upper part of the body which is attached to the case 4, which guides the design, the overlap of the 5 supporting part of the section with loosening blades 6 arranged on the top of the ceiling 5, a rigid frame having guides inside the cavity face of salivates 7 and dammed retractable shield 8, the final part consists of the base 9 of the T-shaped which is connected to the base 1 supports a part of the hydraulic cylinder 10 along the axis of symmetry, the two legs 11, the arcuate overlapping 12, which front edge is always adjacent to the guiding canister 4, the arcuate overlapping 12 has a window (hatch) 13 for the production of coal.
The principle of operation supports the following. Powerful coal seam, consisting of a shifting layer 27 and the underlay (interlayer) column 28, worked out one layer with the release of the overlying strata. Longwall face shifting layer have the soil layer and equip sectional mechanized support, the coal from the bottom of the array along the length and width of the slash-and-burn layer 27, in this issue of coal is not produced. After the harvester on the width of the removed strip is moved to the plane of the bottom supporting part of the shield. While loosening the knives cut in the underlay (interlayer) coal thickness, thereby giving greater stability of the lining, as well as razobratsya overlying column. The upper part of the loosening of the knives is made of metal of high strength. The final part of the section does not move. Rear (dammed) retractable shield 8 is pulled Jack 24 in overlapping 5 supporting part of the section. With the help of hydraulic jacks 15 opens the shutter main hatch 13 and coal underlay or interlayer thickness 28 is produced by a telescopic chute 14 at the dam conveyor 26. Due to the reciprocating movements of the rear retractable shield 8 is additional crushing of coal produced strata and squeezing them in Luke 13. The outermost part of the retractable shield should be made of highly durable metal. At the end of the production of coal the main hatch 13 is blocked, is the shifting of the final part of the section, and followed by the release of coal directly on the dam conveyor 26 from the window, which is formed by the retraction of the gate 19 of the movable part of the emission lining in certain geological conditions, some options stope, such as power shifting layer, the capacity of underlay or interlayer thickness, the step of release can be adjusted.
Thus, the proposed shield section for excavation thick flat seams with the release of coal enables very actively influence the overlying coal thickness due to the unconventional design features lining, and energy of rock pressure. It also provides safety for the production of coal by samovydvizheniya shields that, when the shifting of the supporting part of the section are pulled out of the guides of the arcuate cavities fencing final part of the section and overlapping the coupling gaps. The stiffness of overlapping final part of the section is provided due to its curved shape.
Shield for extraction of thick flat seams with the release of coal, consisting of interconnected supporting and exhaust parts, consisting of a base supporting part of the U-shaped legs supporting part, the upper part of the buildings which secures the case, representing the guiding structure for adjusting the position of the overlap of the exhaust casti face of salivates and dammed retractable shield, which are controlled by the hydraulic Jack, loosening the knives are on the overlap of the supporting part at the top, the final part consists of the base of the T-shaped form, which is connected to the base supporting part of the hydraulic cylinder along the axis of symmetry, legs, arched ceiling, which front edge is always on the guides of the case, there is overlap window (hatch) for the production of coal.
SUBSTANCE: facility for connecting sections of support with conveyor consists of bracket rigidly secured on linear section of conveyor and connected with support by means of vertical hinge; support in its turn is connected with vertical ribs of beam of powered roof support section by means of horizontal hinge; hydro-cartridge for control over linear section of conveyor in vertical plane is secured on face surface of support; plunger of hydro-cartridge interacts with beam of section of powered support; also run of hydro-cartridge for control over linear section of powered support in vertical plane exceeds value of support set-off relative to beam of section of support in vertical plane; facility also consists of share located on mining side of conveyor section. The horizontal hinge is connected with vertical ribs of the beam of the section of powered support by means of two coaxial slots made in vertical ribs; also each of slots in vertical plane on ends has rounding with chamfers, the top of the angle between which in each vertical slot is directed to support.
EFFECT: increased functionality of facility under conditions of dirtying due to less dirt ingress and due to self-cleaning capacity of slots during main process operations of facility.
SUBSTANCE: powered support for steep formations of average thickness consists of similar linear sections each of which has roof timber, hydraulic prop of stay brace, shoe, hardware compartment capsule, cave-in and bottom-hole enclosure, as well movement and correction mechanism. Stabilisation and correction mechanism is located on both sides of the hardware compartment capsule and consists of supporting screens and air pads inflating against side surfaces of capsules of neighbouring compartments.
EFFECT: improving serviceability of powered support and its stability and movement method.
2 cl, 3 dwg
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: 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.
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: 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.
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: 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: 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: 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