EP2821590A1 - Tête de rassemblement de machine d'exploitation minière - Google Patents

Tête de rassemblement de machine d'exploitation minière Download PDF

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Publication number
EP2821590A1
EP2821590A1 EP13175084.6A EP13175084A EP2821590A1 EP 2821590 A1 EP2821590 A1 EP 2821590A1 EP 13175084 A EP13175084 A EP 13175084A EP 2821590 A1 EP2821590 A1 EP 2821590A1
Authority
EP
European Patent Office
Prior art keywords
head
base
region
conveyor
rearward
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP13175084.6A
Other languages
German (de)
English (en)
Inventor
Erich Brandl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sandvik Intellectual Property AB
Original Assignee
Sandvik Intellectual Property AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sandvik Intellectual Property AB filed Critical Sandvik Intellectual Property AB
Priority to EP13175084.6A priority Critical patent/EP2821590A1/fr
Priority to PCT/EP2014/062914 priority patent/WO2015000711A2/fr
Priority to RU2016103376A priority patent/RU2646259C2/ru
Priority to US14/900,543 priority patent/US20160146006A1/en
Priority to AU2014286454A priority patent/AU2014286454B2/en
Priority to CN201420369166.6U priority patent/CN204283436U/zh
Publication of EP2821590A1 publication Critical patent/EP2821590A1/fr
Priority to ZA2015/09094A priority patent/ZA201509094B/en
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
    • E21D9/122—Working or loading platforms
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C27/00—Machines which completely free the mineral from the seam
    • E21C27/20—Mineral freed by means not involving slitting
    • E21C27/24—Mineral freed by means not involving slitting by milling means acting on the full working face, i.e. the rotary axis of the tool carrier being substantially parallel to the working face
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
    • E21C35/20—General features of equipment for removal of chippings, e.g. for loading on conveyor
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
    • E21D9/126—Loading devices or installations

Definitions

  • the present invention relates to a mining machine gathering head positionable at a forward end of a mining machine, and in particular, although not exclusively, to a gathering head having a pair of end walls positioned at the lengthwise ends of the head being shaped and configured to guide a flow of extracted material into and from the gathering head.
  • a mobile mining machine comprises a rotatable cutting or mining head having cutting bits provided on rotating drums to contact the mineral face.
  • the cutting head is conventionally mounted at a moveable boom so as to be adjustable in height relative to the mine floor. As the cutting head is rotated and advanced into the seam, the extracted mineral is gathered by a gathering head and then conveyed rearwardly by the mobile machine via conveying apparatus to create discharged stock piles for subsequent extraction from the mine.
  • the gathering head (alternatively termed a loading shield) is forced into the material extracted from the deposit by the forward motion of the mining machine.
  • the rotating cutting head boom may comprise helical discs extending lengthwise along the boom to form an auger optionally coupled with a secondary helical conveying device that transports the material rearwardly of the head.
  • Example gathering heads configured with helical auger are disclosed in US 3,860, 291 and US 4,277,105 .
  • a with secondary helical auger is disclosed in WO 2011/040806 and US 4,952,000 .
  • An alternative approach to material transport involves gathering arms or rotating discs provided at the loading shield that require separate drive components.
  • Such arms or discs are mounted at a base of the gathering head and operate continuously and independently of the cutting head.
  • This gathering mechanism is preferred over the helical cutting head configuration as the latter approach hinders the torque force of the cutting teeth due to the frictional contact with the extracted material that is driven between the helical plates.
  • a gathering head comprising rotating spinning arms is disclosed in WO 98/03770 .
  • the associated components and operation of rotating gathering arms increases the number of moving parts and weight of the machine generally ,which is disadvantageous for maintenance and transport reasons. Accordingly, what is required is a gathering head effective to receive and transport rearwardly material extracted from a deposit that addresses the above problems.
  • the present gathering head comprises a base extending lengthwise along the head with a pair of sidewalls positioned at the lengthwise ends of the base.
  • Each sidewall comprises a side surface to contact the extracted material where these side surfaces are both tapered inwardly in a widthwise direction of the head from the forward end to the rearward end and are tapered outwardly relative to the base from a lowermost region to an uppermost region of each side surface.
  • extracted material contacts the side surfaces and is guided and deflected onto the base surface of the head and at least one back plate that extends upwardly from a rearward region of the base.
  • a width of the base of the head in a direction between the forward and rearward ends of the head is minimised, to reduce as far as possible, the travel distance by which material must flow from the leading edge (of the head) to the exit region (conveyor).
  • the declined and inwardly tapering configuration of the sidewalls eliminates regions of the head that would otherwise represent ' entrapment zones' where extracted material could collect and represent an obstruction to the continuous flow of material through the gathering head.
  • the present gathering head also comprises a plurality of additional sets of conveyor feed plates that are also tapered and inclined to facilitate further the rearward transport of material along the loading shield.
  • a mining machine gathering head positionable at a forward end of a mining machine, the head having a forward end and a rearward end, the rearward end intended to be positioned adjacent the mining machine, the head comprising: at least one base extending lengthwise along the head, the base having a base surface to contact material gathered by the head; a pair of sidewalls positioned at the lengthwise ends of the base, the sidewalls each having a side surface to contact the material and being tapered inwardly in the widthwise direction of the head from the forward end to the rearward end; at least one back plate extending upwardly from a rearward region of the base and in the lengthwise direction between the sidewalls; a ramp extending lengthwise along the head and being declined to project forward and downward from the base to provide a leading edge at the head; characterised in that : each side surface is tapered outwardly relative to the base from a lowermost region to an uppermost region of each side surface to guide the flow of material onto the base surface
  • the head further comprises a pair of side flanges each flange being moveably mounted at an outer region of a respective sidewall and capable of projecting forwardly of the respective sidewall to increase the inlet area of the gathering head when extended and to facilitate manoeuvrability of the mining machine when retracted.
  • each flange is mounted at the respective sidewall via at least one pivot mounting and at least one guide member to hold and guide the pivoting movement of each flange relative to each sidewall.
  • each flange is pivotally driven by a power operated linear actuator such as a hydraulic or pneumatic cylinder to provide a simple and reliable movement mechanism.
  • the guide member comprises an elongate member slidably mounted within a guide bracket.
  • each flange is tapered inwardly and outwardly at substantially the same angle as the side surfaces such that a flange contact surface (to contact material gathered by the head) is substantially coplanar with each respective side surface. This is advantageous to provide a smooth transfer of material in the rearward direction over the head contact surfaces.
  • the head further comprises a conveyor having a belt projecting rearwardly from the ramp, a forward end of the conveyor extending into a region of the base in the widthwise direction between the sidewalls. Accordingly, this minimises the distance by which material within the head must travel rearwardly to reach the conveyor.
  • the head may comprise a helical auger projecting rearwardly from the head to transport the extracted material rearwardly with such an auger arrangement also projecting into the head region.
  • a height level of the base surface is positioned at a level above the belt to provide that material is configured to fall downwardly from the base surface onto the belt.
  • the head further comprises a first set of conveyor feed plates extending between and inclined downwardly from the base surface to the belt.
  • the head further comprises a second set of conveyor feed plates extending between and being tapered inwardly from the back plate towards the belt.
  • the first and second sets of feed plates comprise a shape configuration to match certain end edges of the base plate(s) and the back plate(s).
  • a front end of the conveyor is positioned substantially at a region of the leading edge of the base and/or a rearward edge of the ramp to facilitate the rearward travel of the extracted material through the head.
  • the base comprises two base plates extending inwardly from each respective sidewall.
  • Each base plate extends in the lengthwise direction between a respective side wall and a region of the conveyor.
  • each base plate comprises a trapezium shaped profile where a longest edge of one of the parallel sides of the trapezium is positioned forwardmost to represent a leading edge of the base plate. That is, a width of the base plate decreases from the leading edge to the rearward edge of each plate.
  • a shape profile of the side surface immediately adjacent each back plate and each base plate comprises a generally triangular configuration to create the present contoured contact surface of the gathering head to guide material from the forward end to the rearward end of the gathering head.
  • the back plate comprises two back plates extending inwardly from each respective sidewall and upwardly from each respective back plate.
  • each back plate comprises an upper shield plate projecting upwardly from an upper edge of each back plate and being inclined rearwardly and upwardly from each back plate. Accordingly, the contact surface area of the head is increased to avoid sideways loss of material whilst facilitating directing of the material onto the conveyor via the funnelling effect.
  • an approximate length of each upper shield plate is approximately equal to a maximum length of each back plate.
  • the base surface is substantially planar and devoid of obstructions to allow the unhindered passage of material gathered by the head.
  • the head is devoid of rotatable spinner arms mounted at the base that would otherwise increase the weight, complexity and energy consumption of the machine.
  • a distance by which the base extends widthwise between the forward and rearward ends is less than a height of the head between a lowermost to an uppermost region of the sidewalls.
  • Such an arrangement further facilitates the funnelling of material rearwardly through the head to maximise the travel distance of material by the rearward drive action of the rotating cutting head.
  • a mining machine or a continuous mining machine comprising a gathering head as claimed herein.
  • the present gathering head will now be described with reference to a preferred embodiment by way of example mounted upon a bolter miner being an electrically powered, track-mounted continuous mining machine designed to excavate roadways and install roof bolts simultaneously.
  • Such mining machines comprise a series of cutter drums mounted on a hydraulically actuated frame to enable independent movement of the drums relative to a main frame and tracks.
  • the machine also comprises roof bolters mounted on a stationary part of the main frame that can be operated throughout the cutting cycle.
  • the mining machine 100 comprises a main frame 101 that provides support for an undercarriage or chassis 109 that supports a pair of endless driven tracks 113 for propelling the machine 100 over the ground and along a tunnel to advance forwardly through a material deposit seam.
  • Main frame 101 comprises a generally forward end 102 and a generally rearward end 103.
  • a conveyor 104 extends substantially from forward end 102 to rearward end 103 and is adapted to carry material dislodged from the cutting face for subsequent discharge and stock piling at a remote location optionally using additional conveying and mining apparatus.
  • a movable cutting boom 105 is pivotally mounted at one end 112 to main frame 101 via a pivoting bracket 110 and comprises a second end 106 mounting a cutting head 115 that in turn mounts a plurality of rotatable drums 107.
  • Cutting bits 108 project radially from each drum 107 and are specifically adapted to cut into and dislodge the mineral material to be mined from the seam.
  • Boom 105 and in particular end 106 is capable of being raised or lowered relative to main frame 101 and endless tracks 113 to enable machine 100 to cut the seam face over a varying height range above the ground of the mine tunnel.
  • Boom 105 is operated by hydraulic rams 202 (referring to figure 2 ) and other associated components as will be appreciated by those skilled in the art.
  • a canopy 111 comprises a vertically uppermost region having a generally planar configuration and is adapted for being raised vertically upward from frame 101 in a manner similar to cutting boom 105 so as to contact the mine roof to provide structural support as necessary during the cutting and roof bolting operations. Additionally, a tail section 114 projects rearwardly from the rearward end 103 of frame 101 to carry rearwardly conveyor 104 to a discharge end 116 representing a rearwardmost part of the continuous miner 100.
  • the machine 100 further comprises a gathering head 117 mounted at forward end 102 via a head mounting bracket 203.
  • Head 117 comprises a base 119 extending lengthwise along the head in a direction perpendicular to a main length of machine 100.
  • Base 119 is terminated at each lengthwise end by a respective sidewall 120.
  • a ramp 118 is inclined downwardly from a forwardmost end of base 119 to provide a leading and lowermost component of head 117.
  • Ramp 118 extends lengthwise between sidewalls 120.
  • Head 117 further comprises a back plate 124 projecting upwardly from a rearward region of base 119 that in combination with sidewalls 120, base 119 and ramp 118 represent the main components of gathering head 117.
  • a pair of side flanges 121 are pivotally mounted at an outboard side of each respective sidewall 120 via a pivot mounting 204 located at an upper region 322 of head 117.
  • An elongate guide bar 200 is mounted at a lowermost region of each flange 121 at a lowermost end 323 of sidewalls 120.
  • Each flange 121 comprises a contact surface 303 aligned substantially coplanar with side surface 304 to effectively represent an extension of each sidewall 120. Accordingly, each flange 121 is capable of pivoting about mount 204 to swing forwardly and laterally outward from the main components of shield 117 so as to effectively increase the cross sectional area of the mouth of head 117 that receives and gathers the extracted material. Pivoting extension of flanges 121 is controlled via a respective pair of power operated linear actuators 201 having a first end mounted at sidewall 120 and a second end mounted at flange 121.
  • Head 117 further comprises an initial transport conveyor 122 having a forwardmost end 310 located at a forwardmost region of head 117. That is, a region of conveyor 122 extends into base 119 and in a widthwise direction between sidewalls 120.
  • Conveyor 122 comprises a transport belt that extends around a forward mounted guide and drive assembly 125 positioned within a region of ramp 118. Conveyor 122 interfaces at its rearward end with the main machine conveyor 104 that extends through frame 101 and tale section 114.
  • Ramp 118 is substantially elongate to extend between sidewalls 120 and comprises a leading edge 301 and a trailing edge 302.
  • Ramp surface 300 is inclined upwardly from front edge 301 to rear edge 302.
  • base 119 comprise two base plates positioned to the left and right hand side of the conveyor 122 when head 117 is viewed from the front as shown in figure 3 .
  • Each base plate comprises a base surface 324 for contacting material gathered by head 117.
  • the exposed base surface 324 comprises a generally trapezium shaped profile such that the longest edge 311 of the parallel sides is positioned forwardmost and immediately behind trailing edge 302 of ramp 118.
  • Surface 324 is further defined by an inner edge 314 and an outer edge 313 that extend rearwardly from ramp 118 to back plate 124.
  • Each edge 313, 314 tapers inwardly to a shortest rearward edge 312 aligned parallel with front edge 311.
  • Outer tapering edge 313 is positioned in contact with a side surface 304 of side wall 120 whilst the second inward tapering edge 314 is positioned opposed to conveyor 122.
  • back plate 124 is divided into two plates that extend upwardly from the rearward edge 312 of each respective base plate 119. That is, a lowermost edge 325 of each back plate 124 is positioned at the rearward edge 312 of each base plate 119. A side edge 326 of each back plate 124 is inclined upwardly from base edge 325 and is positioned in contact with side surface 304. An uppermost edge 327 of each back plate 124 forms a junction with a lowermost edge 319 of a respective upper shield plate 123 that is inclined upwardly and projects rearwardly from each back plate 124.
  • a rearward edge 320 of each shield plate 123 represents a rearwardmost part of head 117 and acts to contact and further guide material flow onto the conveyor 122 that extends centrally between the corresponding pairs of base plates 119, back plates 124 and shield plates 123.
  • each base surface 324 is vertically above a height of the belt of conveyor 122 such that as material is gathered by head 117 it falls or is guided downwardly from surface 324 onto conveyor 122.
  • This flow is facilitated by a first set of conveyor feed plates 306 that extend between the lengthwise sides of conveyor 122 and the inner tapering edges 314 of each base plates 119.
  • Each feed plate 306 comprises a guide surface 307 that is defined, in part, by a lengthwise edge 317 that is positioned in contact with the inner tapered edge 314. Feed plate surface 306 terminates at its innermost side by edge 318 positioned immediately adjacent the side edges of conveyor 122.
  • each feed surface 307 is declined downwardly from outer edge 317 towards inner edge 318. Material is therefore capable of sliding downwardly over surface 307 and onto conveyor 122.
  • the flow of extracted material onto conveyor 122 is further assisted by a second set of conveyor feed plates 308.
  • a pair of second feed plates 308 are positioned inboard of each back plate 124 and a lower region of each shield plate 123.
  • an outer edge 328 of each feed plate 308 is positioned in contact with the upstanding innermost edge 315 of each back plate 124 adjacent each side of conveyor 122.
  • Each feed plate 308 tapers inward from its leading edge 328 to a rearwardmost edge 316 such that edge 316 is positioned closest to conveyor 122 relative to leading edge 328. Accordingly, a feed surface 309 of each plate 308 provides a tapered guide surface from each back plate 124 to conveyor 122.
  • the combination of the first and second set of conveyor feed plates 306, 308 provide a guide mouth for conveyor 122 that tapers outwardly and upwardly to facilitate transfer of material from the forwardmost edge 301 of ramp 118 towards the main conveyor 104.
  • Each sidewall side surface 304 is inward facing towards back plates 124 and base plates 119.
  • Each side surface 304 is defined at its outermost region by an outermost lengthwise edge 321 that extends upwardly from lowermost region 323 to uppermost region 322.
  • Each side surface 304 and in particular each sidewall 120 is tapered inwardly in the widthwise direction of head 117 between a forwardmost region corresponding to leading edge 301 and a rearwardmost region corresponding to mount 205 at a rearward end of conveyor 122. That is, a width of head 117 decreases generally in a direction from end 301 to end 205.
  • Each side surface 304 and sidewall 120 is also inclined rearwardly relative to a vertical plane and in particular a material contact surface 305 of each back plate 124.
  • each side surface 304 is inclined outwardly relative to each base plate 119 and inclined rearwardly relative to each back plate 124.
  • This configuration is advantageous to provide a guided material flow path as material flows over ramp 118 and into the main collection area of head 117 in contact with each base plate 119, each side wall 120 and each back plate 124.
  • the material is both deflected laterally inward towards conveyor 122 and upward onto back plate 124 where it is subsequently directed onto conveyor 122 via respective feed plates 306, 308.
  • the present head 117 is configured such that a surface area of each base surface 324 is minimised as far as possible to avoid creation of 'entrapment zones' where the material flow would otherwise become static and disrupt the feed and gathering of head 117.
  • This reduced surface area is achieved, in part, by the outwardly and rearwardly tapered sidewalls 120 that effectively project into the base region of head 117.
  • the surface area of each base surface 324 is further reduced via the first set of conveyor feed plates 306 being inclined downwardly relative to each surface 324.
  • Present head 117 therefore provides a greatly contoured internal material contact surface formed from the plurality of plate sections that are specifically angled relative to one another to optimise the material flow.
  • a width of head 117 between leading edge 301 and a rearward side 501 of head 117 is less than a corresponding height between lowermost and uppermost regions 323, 322. Accordingly, as cutting head 115 extracts material from seam 500, the fractured material is capable of being transported over the respective surfaces 300, 324, 304, 305, and 309 onto conveyor 122 by the action of the rotating head 115.
  • the present gathering head therefore is optimised for reduced weight and robustness by eliminating the additional components associated with gathering or spinner arms conventional to existing continuous mining machines.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Chutes (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Component Parts Of Construction Machinery (AREA)
EP13175084.6A 2013-07-04 2013-07-04 Tête de rassemblement de machine d'exploitation minière Withdrawn EP2821590A1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP13175084.6A EP2821590A1 (fr) 2013-07-04 2013-07-04 Tête de rassemblement de machine d'exploitation minière
PCT/EP2014/062914 WO2015000711A2 (fr) 2013-07-04 2014-06-19 Tête de collecte de machine d'exploitation minière
RU2016103376A RU2646259C2 (ru) 2013-07-04 2014-06-19 Загребающая головка горнопроходческой машины
US14/900,543 US20160146006A1 (en) 2013-07-04 2014-06-19 Mining machine gathering head
AU2014286454A AU2014286454B2 (en) 2013-07-04 2014-06-19 Mining machine gathering head
CN201420369166.6U CN204283436U (zh) 2013-07-04 2014-07-04 采掘机耙爪和采掘机
ZA2015/09094A ZA201509094B (en) 2013-07-04 2015-12-14 Mining machine gathering head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13175084.6A EP2821590A1 (fr) 2013-07-04 2013-07-04 Tête de rassemblement de machine d'exploitation minière

Publications (1)

Publication Number Publication Date
EP2821590A1 true EP2821590A1 (fr) 2015-01-07

Family

ID=48703338

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13175084.6A Withdrawn EP2821590A1 (fr) 2013-07-04 2013-07-04 Tête de rassemblement de machine d'exploitation minière

Country Status (7)

Country Link
US (1) US20160146006A1 (fr)
EP (1) EP2821590A1 (fr)
CN (1) CN204283436U (fr)
AU (1) AU2014286454B2 (fr)
RU (1) RU2646259C2 (fr)
WO (1) WO2015000711A2 (fr)
ZA (1) ZA201509094B (fr)

Cited By (4)

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RU168978U1 (ru) * 2016-03-29 2017-03-01 Владислав Александрович Лукьяненко Проходческий комбайн
RU185540U1 (ru) * 2017-07-14 2018-12-10 Общество С Ограниченной Ответственностью "Корум Майнинг" Исполнительный орган горнопроходческого комбайна
RU2708130C1 (ru) * 2018-09-10 2019-12-04 Андрей Александрович Рубцов Платформа-крепеподъемник
CN118087836A (zh) * 2024-04-26 2024-05-28 山西方山金晖凯川煤业有限公司 一种煤矿井下用移动式升降检修平台

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US9903202B2 (en) * 2015-09-28 2018-02-27 Joy Mm Delaware, Inc. Shield for sumping frame of mining machine
RU196501U1 (ru) * 2019-07-01 2020-03-03 Акционерное Общество "Копейский Машиностроительный Завод" Погрузочный стол щитового типа горного комбайна
CN112049633A (zh) * 2020-07-29 2020-12-08 义煤集团永兴工程有限责任公司 一种安全性能高的煤矿掘进机

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RU168978U1 (ru) * 2016-03-29 2017-03-01 Владислав Александрович Лукьяненко Проходческий комбайн
RU185540U1 (ru) * 2017-07-14 2018-12-10 Общество С Ограниченной Ответственностью "Корум Майнинг" Исполнительный орган горнопроходческого комбайна
RU2708130C1 (ru) * 2018-09-10 2019-12-04 Андрей Александрович Рубцов Платформа-крепеподъемник
WO2020055284A1 (fr) * 2018-09-10 2020-03-19 Андрей Александрович РУБЦОВ Plate-forme de levage d'étayage sur actionneur de haveuse à action sélective et éléments d'étayage métallique en arc de cercle se présentant comme des éléments en cantilever formant la partie en cantilever de l'étayage assurant la continuité de l'étayage
CN118087836A (zh) * 2024-04-26 2024-05-28 山西方山金晖凯川煤业有限公司 一种煤矿井下用移动式升降检修平台

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RU2646259C2 (ru) 2018-03-02
WO2015000711A3 (fr) 2015-09-24
AU2014286454B2 (en) 2018-02-15
AU2014286454A1 (en) 2015-12-24
ZA201509094B (en) 2019-06-26
WO2015000711A2 (fr) 2015-01-08
RU2016103376A (ru) 2017-08-10
CN204283436U (zh) 2015-04-22
US20160146006A1 (en) 2016-05-26

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