EP0304421B1 - Tagebau-fräsgerät - Google Patents

Tagebau-fräsgerät Download PDF

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Publication number
EP0304421B1
EP0304421B1 EP87902484A EP87902484A EP0304421B1 EP 0304421 B1 EP0304421 B1 EP 0304421B1 EP 87902484 A EP87902484 A EP 87902484A EP 87902484 A EP87902484 A EP 87902484A EP 0304421 B1 EP0304421 B1 EP 0304421B1
Authority
EP
European Patent Office
Prior art keywords
mining apparatus
open
conveyor
cast mining
superstructure
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.)
Expired - Lifetime
Application number
EP87902484A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0304421A1 (de
Inventor
Thorwald Kipp
Bernhard Wiechers
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.)
CNH Industrial Baumaschinen GmbH
Original Assignee
O&K Orenstein and Koppel GmbH
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 O&K Orenstein and Koppel GmbH filed Critical O&K Orenstein and Koppel GmbH
Priority to AT87902484T priority Critical patent/ATE78319T1/de
Publication of EP0304421A1 publication Critical patent/EP0304421A1/de
Application granted granted Critical
Publication of EP0304421B1 publication Critical patent/EP0304421B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C47/00—Machines for obtaining or the removal of materials in open-pit mines
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C27/00—Machines which completely free the mineral from the seam

Definitions

  • the invention relates to an open-pit mining device according to the generic part of the first claim.
  • So-called partial cutting machines which work with one or more rotating cutting heads of relatively small dimensions on booms that can be swiveled upwards and downwards and sideways, in particular higher dismantling fronts, the material obtained falling onto a loading ramp that lies beneath it and being loaded by loading devices such as e.g. Lobster scissors loader is pulled onto a centrally arranged scraper chain conveyor.
  • loading devices such as e.g. Lobster scissors loader
  • the disadvantage of such devices with discontinuous feed is in particular the relatively low, strongly fluctuating extraction rate, which among other things. also depends on the skill and dismantling strategy of the operator.
  • the grain size of the aggregate is also subject to major fluctuations and oversize can hardly be avoided or only at the expense of a lower extraction rate. Disadvantages are furthermore the small excavation width in relation to the excavation height - in particular due to the loading device - and the sensitive and wear-prone conveyor element scraper chain.
  • Such extraction devices are also not suitable for the extraction of hard minerals in coarser layers, since the chisels cannot cut themselves free in the extraction area due to the high feed rate and the opposite circumferential speed. Further disadvantages are the incomplete transport of the dissolved material to the center and the loading process via the loading plate, which involves great effort and wear.
  • So-called surface miners which are constructed similarly to the continuous miners described above. In contrast to the latter, whose extraction principle is practically a digging process, these are real milling devices.
  • the direction of rotation of the rollers equipped with spirally arranged chisels is extremely important, i.e. the dissolved material must be thrown over the roller onto the discharge conveyor.
  • carrier bars on the roller and baffle walls in front of and above the roller and finally a sign are provided which pushes the material falling behind the roller over the formation until it is again gripped by the roller.
  • a disadvantage is the strong grain size reduction that occurs both when loosening and when loading. As with the continuous miners, this type of construction can only achieve a relatively small depth and width.
  • the spirally arranged chisels of the rapidly rotating cutting rollers are just as suitable for use as the surface miners described above Loosen hard materials and are protected in the conveying direction by a wear-resistant, double-start spiral on the roller, which conveys the loosened material from both sides towards the center.
  • the bearing and drive areas are cut free due to the partial overlap of the cutting areas of the center roll and the angled side rolls. In conjunction with the undershot cutting, this enables removal heights that are above the roller diameter.
  • the simultaneous loosening and loading across the entire width of the roller ensures smooth running and even shredding of the resulting pile to a piece size that can be transported by belt.
  • the arrangement of the extraction element in front of the crawler track in connection with the material transport through the spirals and the baffle plate or plate arranged vertically behind the roller enables a coarser excavation width than that of the surface-milling cutters described above.
  • the resulting pile accumulates behind the center roller and is to pass through a high-level through-opening in the middle of the plate onto a conveyor belt arranged behind it.
  • This loading principle requires at least very high thrust forces and is unsatisfactory in terms of efficiency.
  • Another disadvantage of the C-Miner is the limited ability to mine insignificant hard layers. In such cases, due to the undershot direction of rotation, a very high weight will be required to prevent the device from 'climbing'. As for the other open-cut mines, coarser parts of cohesive material will be even more difficult or impossible for the C-Miner, since the spirals are clogged by caking material and practically cannot be cleaned.
  • US-A 4312541 and US-A 4486050 each show a trench cutter for hard minerals, which have a mining device in the form of a rotating disk with a plurality of chisels arranged one above the other, the upper ends of which, as seen in the direction of advance, in relation to the lower ends. protrude forward.
  • the material thus obtained is taken along in a circumferential direction and, if necessary, is further crushed by crushing elements.
  • the material obtained is to be handed over to a downstream belt conveyor.
  • a disadvantage of such a construction is that the trencher has a certain vertical height in its extraction area and that the broken material also falls onto the ground, from where it is no longer or can only be recorded under difficult conditions.
  • the propulsion device which is preferably formed here by a walking mechanism, which is supported on the lateral tunnel walls, and remains there.
  • the floor must be reworked by a subsequent cleaning device with appropriate receiving elements. Due to the fact that the propulsion device is formed by a walking mechanism, only intermittent propulsion is possible.
  • the invention has for its object to develop the opencast mining device described in the generic part of the first claim in such a way that continuous loosening and loading in one operation is made possible in such a way that even fallen materials lying on the ground can be picked up by the downstream conveyor .
  • Separate follow-up devices for clearing or cleaning the newly created formation should be unnecessary.
  • the chisels move on approximately horizontal cutting circles, so that no significant vertical forces arise and in particular a 'climbing' of the machine is avoided. In addition, the cutting forces are minimized since the chisels are the easiest to penetrate into the solid in the - approximately horizontal - layering level of the minerals to be mined.
  • the roughly vertical arrangement of the milling drums also enables the construction of extraction equipment with a very large excavation height without a correspondingly coarse drum diameter or alternating driving and swiveling movements as with the partial cutting machines.
  • the subject matter of the invention can be used in particular where predominantly thin layers with a large width are to be mined.
  • the coarse excavation width that can be achieved in this way and the coarse excavation height at the same time enable high extraction rates with low feed speed and mileage (distance).
  • the horizontal arrangement of the extraction device creates a flat surface and enables the precise removal of individual layers.
  • Each vertically arranged milling drum preferably consists of a plurality of individual ring elements equipped with chisels, which are arranged concentrically on a common drive shaft. This makes the manufacture and spare parts inventory as well as the replacement of worn milling drums easier and cheaper.
  • the possibility is provided in the vertical arrangement of the extraction device, on the one hand, to use ring elements correspondingly differently dimensioned or equipped with chisels, or alternatively to adjust the gap width between the milling drums to the desired dimension by changing the center distance.
  • guide plates are provided in the rear area of the milling drums. This way the majority of the accumulated material directly into the loading area of the conveyor, while the rest of the rotating chisels are returned to the cutting area through the concentric gap formed between the guide plate and the milling drum.
  • Extraction units with several roughly vertically arranged milling drums or horizontally arranged milling drums are used for rough mining widths.
  • a conveyor screw is provided on the left and right for transporting the recovered pile to the center of the device, which are arranged directly behind the extraction device.
  • the screw conveyors can also be equipped with chisels in order to mill off any excess material that has remained and to produce a clean formation.
  • a belt bucket elevator or alternatively a cellular wheel is provided for picking up the pile from the level and loading a higher conveyor belt.
  • the cellular wheel which is open on the front, rotates around the central girder of the superstructure and is sealed on the outside in the loading and unloading area by fixed chute walls against unintentional discharge.
  • the cell conveyor is suitable for a wide variety of materials and enables coarse strokes at a short distance, which results in a compact design of the extraction device and an advantageous coarse discharge height of the discharge conveyor belt.
  • the extraction and conveying devices of the opencast milling machine are arranged on or on a superstructure which is movably mounted on all sides.
  • the spherical bearing in the middle or rear area of the caterpillar undercarriage between the caterpillars allows the superstructure to be lifted and closed by means of a hydraulic cylinder supported on both sides by a hydraulic cylinder vertically on the front caterpillar axis and connected to the crawler undercarriage by a steering cylinder arranged horizontally in the area of the front caterpillar axis lower and swivel and tilt sideways.
  • the separation of the functions of loosening / breaking and transporting according to the invention permits a chisel arrangement of the milling drums in such a way that the latter can be cleaned by radially adjustable rakes. This makes it possible to break down layers with a higher proportion of cohesive material without the milling drums becoming clogged.
  • FIGS. 1 and 2 show an exemplary application of the inventive concept to an open-pit mining device 35.
  • the open-pit mining device 35 has a crawler track 2 with two crawlers 3 and 4 and a superstructure 6 movable on all sides, which is mounted on the crawler track 2 and the winning device 36 as well as all funding institutions 42, 43, 55, 59 and 60.
  • the extraction device 36 consists of two horizontally mounted milling rollers 38 and 39, arranged transversely in front of the crawler chassis 2, with an aligned longitudinal axis 37.
  • the bearing and drive areas 47 to 49 are each arranged by an approximately vertically arranged one with the upper end inclined forward Milling drum 50 to 52 cut free, the drive unit 53 is arranged on the upper bearing bracket 54. Otherwise, no further drive units are shown in FIGS.
  • the undershot direction of rotation of the milling drums 38 and 39 causes the loosened pile to be pulled through the gap formed between the planum and the milling drums 38 and 39 and shredded to a certain maximum grain size.
  • the transport of the accumulated material to the center of the device takes place by means of a screw conveyor 42 and 43 arranged on the left and right side immediately behind the extraction device 36 and in front of the vertical plate 44
  • the superstructure 6 accommodates the rotating cell wheel 55 and unloads it into the feed chute 58 of the conveyor belt 59 arranged on the top of the center support 61. This transfers the material to be conveyed onto a lifting and lowering and laterally pivotable discharge conveyor belt 60.
  • the loading of the cellular wheel 55 is carried out by a loader lying in front of it in the loading area
  • Loading ramp 45 facilitates, the cells 56, which are open on one side, are sealed against unintentional discharge except in the loading and unloading area by fixed chute walls 57.
  • the separation of the functions of releasing / breaking and transporting also enables such a chisel arrangement in the horizontally arranged extraction device 36 that there are gaps in the axial direction between the chisels, not shown, in which an adjustable rake (not shown) can engage around the milling drums 38 and 39 clean of caking material.

Landscapes

  • 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)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Scissors And Nippers (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Earth Drilling (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
  • Disintegrating Or Milling (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Bag Frames (AREA)
  • Load-Engaging Elements For Cranes (AREA)
EP87902484A 1986-04-07 1987-04-04 Tagebau-fräsgerät Expired - Lifetime EP0304421B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87902484T ATE78319T1 (de) 1986-04-07 1987-04-04 Tagebau-fraesgeraet.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3611580 1986-04-07
DE3611580 1986-04-07
DE3621420 1986-06-25
DE3621420A DE3621420C1 (de) 1986-04-07 1986-06-25 Tagebau-Fraesgeraet

Publications (2)

Publication Number Publication Date
EP0304421A1 EP0304421A1 (de) 1989-03-01
EP0304421B1 true EP0304421B1 (de) 1992-07-15

Family

ID=25842684

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87902484A Expired - Lifetime EP0304421B1 (de) 1986-04-07 1987-04-04 Tagebau-fräsgerät

Country Status (9)

Country Link
US (1) US4960306A (enrdf_load_stackoverflow)
EP (1) EP0304421B1 (enrdf_load_stackoverflow)
AT (1) ATE78319T1 (enrdf_load_stackoverflow)
AU (1) AU591283B2 (enrdf_load_stackoverflow)
CA (1) CA1261888A (enrdf_load_stackoverflow)
DE (2) DE3621420C1 (enrdf_load_stackoverflow)
IN (1) IN165473B (enrdf_load_stackoverflow)
WO (1) WO1987006301A1 (enrdf_load_stackoverflow)
ZA (1) ZA872486B (enrdf_load_stackoverflow)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4015126C1 (enrdf_load_stackoverflow) * 1990-05-11 1991-10-24 Man Gutehoffnungshuette Ag, 4200 Oberhausen, De
DE9105998U1 (de) * 1991-05-15 1991-08-01 NLW Fördertechnik GmbH, 4232 Xanten Kreuzrahmen zur Verbindung der Streb- und Streckenförderer an der Übergabestelle Streb/Strecke in Kohlenbergwerken
EP0752501A1 (en) * 1995-07-04 1997-01-08 Ohkita Engineering Co., Ltd. Road excavator with a rotary cutter
RU2129193C1 (ru) * 1997-05-06 1999-04-20 Акционерное Общество Открытого Типа Акционерная Компания По Транспорту Нефти "Транснефть" Машина для послойной разработки грунта
US20070209241A1 (en) * 2006-03-03 2007-09-13 Corrado American, Inc. Earthmoving device
US20070204489A1 (en) * 2006-03-03 2007-09-06 Corrado Frank L Earthmoving device with materials handling improvements
AU2007284068B2 (en) * 2006-08-14 2014-07-24 Sord Resources Limited Underground mining apparatus
DE102009061034B4 (de) * 2009-03-20 2014-07-17 Wirtgen Gmbh Abbaumaschine sowie Verfahren zum Spannen des Transportbandes einer Transporteinrichtung bei einer Abbaumaschine
DE202009003824U1 (de) * 2009-03-20 2010-08-12 Wirtgen Gmbh Abbaumaschine, insbesondere Surfac Miner
RU2564547C2 (ru) 2010-04-16 2015-10-10 Джой ММ Делавэр Инк. Конвейерная система для непрерывной разработки открытым способом
PL402402A1 (pl) 2010-07-09 2013-07-22 Joy Mm Delaware, Inc. System górniczy do ciaglego wybierania
DE102011000014A1 (de) * 2011-01-03 2012-07-05 ThyssenKrupp Fördertechnik GmbH Materialaufgabevorrichtung
CN103132996B (zh) * 2012-12-19 2015-07-15 湖南科技大学 大倾角立式滚筒采煤机
DE102013021889A1 (de) * 2013-12-23 2015-06-25 Herrenknecht Ag Verfahren und Vorrichtung zum Verlegen grabenlosen Verlegen von Rohrleitungen
DE102016015395B4 (de) 2016-12-19 2021-01-21 Bernhard Piekorz Vortriebsmaschine
CN106640087B (zh) * 2017-02-20 2019-02-05 南华大学 一种多功能钻岩层装置
CN108071399A (zh) * 2017-12-12 2018-05-25 中国矿业大学 一种露天煤矿自移式连续采煤装煤设备及其布置方法
CN111810158B (zh) * 2019-04-11 2024-09-27 上海创力集团股份有限公司 露天矿智能化连续开采装备
CN114856600B (zh) * 2021-02-05 2025-03-04 中铁高新工业股份有限公司 一种掘进机盲区滚筒式破岩装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2163797A (en) * 1984-08-31 1986-03-05 Voest Alpine Ag A drift advancing or mining machine

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB489581A (en) * 1937-02-03 1938-07-29 Adam Whitecross Robertson A road surfacing machine
US2595398A (en) * 1949-07-22 1952-05-06 Jesse C Clendenin Coal cutting and loading machine
FR1039292A (fr) * 1951-07-02 1953-10-06 Mines Domaniales De Potasse Dispositif d'abatage applicable en particulier à l'exploitation minière
GB740086A (en) * 1952-09-03 1955-11-09 Samuel Royston Griffin Improvements relating to ditching machines
US2851143A (en) * 1953-09-29 1958-09-09 Rosetz Kurt Loading machine
FR1158143A (fr) * 1955-10-07 1958-06-06 Appareil de terrassement comportant un dispositif creuseur et un dispositif transporteur
US3219390A (en) * 1963-07-15 1965-11-23 Guy O Conner Apparatus for pulverizing solid materials
GB1195411A (en) * 1966-09-13 1970-06-17 Salzgitter Maschinen Ag Improvements in or relating to Mobile Cutting Machines
US4312541A (en) * 1980-03-24 1982-01-26 Jarva, Inc. Hard rock trench cutting machine having anchoring and steering structure
US4486050A (en) * 1983-02-08 1984-12-04 Harrison Western Corporation Rectangular tunnel boring machine and method
AT381986B (de) * 1984-08-31 1986-12-29 Voest Alpine Ag Einrichtung zum abdichten eines von einer schraemmaschine aufgefahrenen streckenquerschnittes
AT386051B (de) * 1985-01-29 1988-06-27 Voest Alpine Ag Streckenvortriebs- oder gewinnungsmaschine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2163797A (en) * 1984-08-31 1986-03-05 Voest Alpine Ag A drift advancing or mining machine

Also Published As

Publication number Publication date
AU591283B2 (en) 1989-11-30
IN165473B (enrdf_load_stackoverflow) 1989-10-28
CA1261888A (en) 1989-09-26
AU7282287A (en) 1987-11-09
DE3621420C1 (de) 1987-10-29
EP0304421A1 (de) 1989-03-01
DE3780462D1 (de) 1992-08-20
US4960306A (en) 1990-10-02
WO1987006301A1 (en) 1987-10-22
ATE78319T1 (de) 1992-08-15
ZA872486B (en) 1987-11-25

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