EP3371418B1 - Shearer loader - Google Patents
Shearer loader Download PDFInfo
- Publication number
- EP3371418B1 EP3371418B1 EP16801138.5A EP16801138A EP3371418B1 EP 3371418 B1 EP3371418 B1 EP 3371418B1 EP 16801138 A EP16801138 A EP 16801138A EP 3371418 B1 EP3371418 B1 EP 3371418B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- support arm
- gear
- planetary gear
- casing
- cutting drum
- 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.)
- Active
Links
- 238000005065 mining Methods 0.000 claims description 8
- 239000002131 composite material Substances 0.000 claims description 4
- 238000000605 extraction Methods 0.000 claims description 2
- 239000003245 coal Substances 0.000 claims 1
- 230000013011 mating Effects 0.000 claims 1
- 230000008439 repair process Effects 0.000 description 13
- 238000012423 maintenance Methods 0.000 description 7
- 230000036316 preload Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
- E21C25/06—Machines slitting solely by one or more cutting rods or cutting drums which rotate, move through the seam, and may or may not reciprocate
- E21C25/08—Mountings for the rods or drums
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
- E21C25/52—Machines incorporating two or more of the slitting means according to groups E21C25/02, E21C25/06, E21C25/16, E21C25/20 and E21C25/22
Definitions
- the invention based on the shearer loader of the type mentioned at the outset, proposes that the housing section of the gearbox housing adjoining the support arm has a separate, radially protruding fastening flange that can be fixed by means of a separate screw connection to a matching counter flange at the free end of the support arm .
- the separate screw connection for fixing the gear housing on the support arm has screw bolts and preload nuts which can be mechanically fixed in the preloaded position.
- Such hydraulically pretensionable screw connections have the advantage that they can apply a precisely defined pretensioning force easily and with greater security, which is particularly important for the connection between the support arm and the gear housing, as the extremely high torques of the cutting roller must be supported via this flange connection .
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Retarders (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
- Transmission Devices (AREA)
- Rollers For Roller Conveyors For Transfer (AREA)
Description
Die Erfindung betrifft einen Walzenschrämlader für bergmännische Gewinnung im Strebbau, mit einem entlang einem Strebförderer in Streblängsrichtung verfahrbaren Maschinenkörper und mindestens einer Schneidwalze, die von einem verschwenkbar am Maschinenkörper befestigten Tragarm getragen wird, um eine parallel zum Hangenden und senkrecht zur Abbaufront verlaufende Achse verdrehbar am freien Ende des Tragarmes gelagert ist und von einem dem Tragarm zugeordneten Antriebsmotor über eine im Inneren des Tragarmes angeordnete Getriebekette und ein am freien Ende des Tragarmes befindliches Planetengetriebe antreibbar ist, dessen unverdrehbar mit dem Endabschnitt des Tragarmes verbundenes Getriebegehäuse aus axial aneinandergereihten, ringförmigen Gehäuseabschnitten besteht, die durch an ihrer Peripherie befindliche Schraubbolzen zusammengehalten werden.The invention relates to a shearer loader for mining in longwall mining, with a machine body that can be moved along a face conveyor in the longitudinal direction of the face and at least one cutting roller that is supported by a support arm that is pivotably attached to the machine body and that can be rotated around an axis running parallel to the hanging wall and perpendicular to the mining front End of the support arm is mounted and can be driven by a drive motor assigned to the support arm via a gear chain arranged in the interior of the support arm and a planetary gear located at the free end of the support arm, the non-rotatable gear housing connected to the end section of the support arm consists of axially lined up, annular housing sections, which are held together by screw bolts located on their periphery.
Derartige Walzenschrämlader sind meistens mit zwei Schneidwalzen ausgerüstet, deren Schneidprofile sich derart ergänzen oder überlappen, dass das anstehende Gewinnungsgut über die gesamte Flözmächtigkeit hereingewonnen werden kann. Besonders hoch beansprucht sind bei diesen Walzenschrämladern die in den Schneidwalzen angeordneten Planetengetriebe und die mit diesem verbundenen Lager der Schneidwalzen. Aus diesem Grund müssen diese besonders hochbelasteten Teile in regelmäßigen Abständen gewartet, repariert oder auch ausgewechselt werden. Diese regelmäßig erforderlichen Reparatur- und Wartungsarbeiten können normalerweise dann ausgeführt werden, wenn ein Abbaufeld vollständig abgebaut ist und die Maschine ohnehin von einem Einsatzort an einen anderen Einsatzort verbracht werden muss. Zu diesem Zweck muss die Maschine in jedem Fall in ihre Teile zerlegt werden und kann in ihre Teile zerlegt zu diesen Wartung- und Reparaturarbeiten in die Werkstatt verbracht werden.Such roller cutter loaders are mostly equipped with two cutting rollers, the cutting profiles of which complement or overlap in such a way that the pending extraction material can be extracted over the entire thickness of the seam. With these shearer loaders, the planetary gears arranged in the cutting rollers and the bearing of the cutting rollers connected to them are particularly highly stressed. For this reason, these particularly highly stressed parts must be serviced, repaired or even replaced at regular intervals. This regularly Any necessary repair and maintenance work can normally be carried out when a mining field has been completely dismantled and the machine has to be moved from one site to another site anyway. For this purpose, the machine must in any case be dismantled into its parts and can be taken to the workshop for this maintenance and repair work.
Bei besonders großen Abbaufeldern und insbesondere bei extrem großen Flözmächtigkeiten sind die Intervalle zwischen den erforderlichen Reparatur- und Wartungsarbeiten oft erheblich kürzer als die Intervalle zwischen den Ortswechseln, sodass zwangsläufig die Reparatur- und Wartungsarbeiten am Einsatzort der Maschine durchgeführt werden müssen, d.h. unter den besonders beengten Verhältnissen im Abbaubetrieb.In the case of particularly large mining fields and especially in the case of extremely large seams, the intervals between the necessary repair and maintenance work are often considerably shorter than the intervals between the changes of location, so that the repair and maintenance work inevitably has to be carried out on site of the machine, i.e. under the particularly cramped conditions in the mining operation.
Bei diesen Reparatur- und Wartungsarbeiten hat es sich als besonders hinderlich erwiesen, wenn unter den beengten Raumverhältnissen am Einsatzort Reparaturen am Planetengetriebe durchgeführt werden müssen. Für diese Reparaturen am Planetengetriebe müssen nämlich das Gehäuse des Planetengetriebes, welches beim Stand der Technik (vergleiche z.B.
Für ungeplante Reparaturen am Planetengetriebe ist es deshalb nach dem Stand der Technik notwendig, den gesamten Tragarm mit anhängendem Planetengetriebe von dem Maschinenkörper zu lösen und an einen für die Reparatur geeigneten Ort zu verbringen. In Anbetracht der Tatsache, dass der Tragarm mit anhängendem Planetengetriebe eine Masse von bis zu 17 t und mehr haben können, ist eine solche Reparatur insbesondere vor allem aufgrund der damit verbundenen Transportarbeiten außerordentlich zeit- und arbeitsaufwändig und führt zu erheblichen Produktionsausfällen.For unplanned repairs to the planetary gear, it is therefore necessary according to the prior art to detach the entire support arm with the attached planetary gear from the machine body and to move it to a location suitable for the repair. In view of the fact that the support arm with attached planetary gear can have a mass of up to 17 t and more, such a repair is extremely time-consuming and labor-intensive, especially due to the transport work involved, and leads to considerable production losses.
Die gleichen Probleme ergeben bei einem aus der
Es ist deshalb Aufgabe der Erfindung, den Walzenschrämlader der eingangs genannten Art dahingehend weiterzubilden, dass Reparatur- und Wartungsarbeiten am Planetengetriebe erheblich vereinfacht und beschleunigt und insbesondere ohne Demontage des Tragarmes durchgeführt werden können.It is therefore the object of the invention to develop the shearer loader of the type mentioned in such a way that repair and maintenance work on the planetary gear can be considerably simplified and accelerated and, in particular, carried out without dismantling the support arm.
Zur Lösung dieser Aufgabe schlägt die Erfindung ausgehend vom Walzenschrämlader der eingangs genannten Art vor, dass der an den Tragarm angrenzende Gehäuseabschnitt des Getriebegehäuses einen gesonderten, radial vorstehenden Befestigungsflansch aufweist, der mittels einer gesonderten Schraubverbindung an einem dazu passenden Gegenflansch am freien Ende des Tragarmes festlegbar ist.To solve this problem, the invention, based on the shearer loader of the type mentioned at the outset, proposes that the housing section of the gearbox housing adjoining the support arm has a separate, radially protruding fastening flange that can be fixed by means of a separate screw connection to a matching counter flange at the free end of the support arm .
Beim Walzenschrämlader gemäß der Erfindung kann nach Demontage der das Planetengetriebe umgebenden Schneidwalze das Planetengetriebe in seiner Gesamtheit vom Tragarm gelöst werden, und zwar durch Lösen der gesonderten Schraubverbindung, die den an den Tragarm angrenzenden Gehäuseabschnitt des Getriebegehäuses mit dem Tragarm verbinden. Ebenso einfach kann nach Durchführung der Wartungs- und Reparaturarbeiten, die in einer geeigneten Werkstatt vorgenommen werden können, das Planetengetriebe wieder an dem Tragarm angebaut werden. Der erforderliche Transport des Planetengetriebes ist unproblematisch, weil ein solches Planetengetriebe nicht mehr als 5t wiegt und verglichen mit dem Tragarm kleine Außenabmessungen hat.In the roller cutter loader according to the invention, after dismantling the cutting roller surrounding the planetary gear, the planetary gear can be in its The whole can be released from the support arm by loosening the separate screw connection which connects the housing section of the gearbox housing adjoining the support arm to the support arm. Just as easily, after the maintenance and repair work, which can be carried out in a suitable workshop, has been carried out, the planetary gear can be reattached to the support arm. The necessary transport of the planetary gear is unproblematic because such a planetary gear does not weigh more than 5t and has small external dimensions compared to the support arm.
Weiterhin ist vorgesehen, dass die drehfeste Verbindung zwischen dem letzten Zahnrad der in dem Tragarm befindlichen Getriebekette und der Antriebswelle des Planetengetriebes durch ein Vielkeil-Verbundelement erfolgt, welches bei angebautem Planetengetriebe von der Versatzseite her in passender Aufnahmeöffnungen im letzten Zahnrad der Getriebekette und in der Antriebswelle des Planetengetriebes einschiebbar ist. Hierdurch ist es möglich, diese drehfeste Verbindung von der Versatzseite her herzustellen oder zu lösen, ohne durch das sich in der Einbauposition befindliche Getriebegehäuse gestört zu werden.It is also provided that the non-rotatable connection between the last toothed wheel of the gear chain located in the support arm and the drive shaft of the planetary gear is made by a multi-spline composite element which, when the planetary gear is attached, is placed on the offset side in suitable receiving openings in the last gear of the gear chain and in the drive shaft of the planetary gear can be inserted. This makes it possible to establish or release this non-rotatable connection from the offset side without being disturbed by the gear housing located in the installed position.
Weiterhin ist vorgesehen, dass die gesonderte Schraubverbindung zur Festlegung des Getriebegehäuses am Tragarm Schraubbolzen und Vorspannmuttern aufweist, die in der vorgespannten Position mechanisch fixierbar sind. Solche hydraulisch vorspannbaren Schraubverbindungen haben den Vorteil, dass sie eine exakt definierte Vorspannkraft einfach und mit höherer Sicherheit aufbringen können, was bei der Verbindung zwischen dem Tragarm und dem Getriebegehäuse insofern besonders wichtig ist, als über diese Flanschverbindung die extrem großen Drehmomente der Schneidwalze abgestützt werden müssen.Furthermore, it is provided that the separate screw connection for fixing the gear housing on the support arm has screw bolts and preload nuts which can be mechanically fixed in the preloaded position. Such hydraulically pretensionable screw connections have the advantage that they can apply a precisely defined pretensioning force easily and with greater security, which is particularly important for the connection between the support arm and the gear housing, as the extremely high torques of the cutting roller must be supported via this flange connection .
Ein Ausführungsbeispiel der Erfindung wird im Folgenden anhand der Zeichnung näher erläutert. Es zeigen:
- Figur 1:
- perspektivisch einen Walzenschrämlader gemäß der Erfindung in einer Gesamtansicht;
- Figur 2:
- in einer der Explosionsdarstellung einen Tragarm, das zugehörige Planetengetriebe und dessen Befestigungsmittel;
- Figur 3:
- perspektivisch den Tragarm mit dem daran montierten Planetengetriebe;
- Figur 4:
- einen axialen Längsschnitt durch das Planetengetriebe angebaut am freien Ende des Tragarmes.
- Figure 1:
- in perspective, a shearer loader according to the invention in an overall view;
- Figure 2:
- in one of the exploded views a support arm, the associated planetary gear and its fastening means;
- Figure 3:
- perspective the support arm with the planetary gear mounted on it;
- Figure 4:
- an axial longitudinal section through the planetary gear attached to the free end of the support arm.
In
Zum Antrieb jeder Schneidwalze 4 dient ein Antriebsmotor, der im Inneren des Tragarmes 3 angeordnet ist und über eine im Inneren des zugehörigen Tragarmes 3 angeordnete Getriebekette das am freien Ende des Tragarmes befindliche Planetengetriebe antreibt, welches seinerseits die zugehörige Schneidwalze 4 antreibt.To drive each
Wie aus
How out
Erfindungsgemäß ist der an den Tragarm 3 angrenzende Gehäuseabschnitt 5c des Getriebegehäuses 5 mit einem radial vorstehenden Befestigungsflansch 7 versehen, der mittels einer gesonderten Schraubverbindung bestehend aus Schraubbolzen 8 und Vorspannmuttern 9 an einem dazu passenden Gegenflansch 10 am freien Ende des behalten Tragarms 3 festlegbar ist. Wie der
Die gesonderte Schraubverbindung, die zur Festlegung des Getriebegehäuses 5 am Tragarm 3 dient, ist mittels der Vorspannmuttern 9 mechansich vorspannbar. Hierzu haben die Schraubbolzen 8 jeweils ein Gewinde 8a, welches in zugehörige Gewindebohrungen im Gegenflansch 10 einschraubbar ist. Außerdem haben die Schraubbolzen 8 am jeweils gegenüberliegenden Ende ein weiteres Gewinde 8b, auf welches eine Vorspannmutter 9 aufschraubbar ist, die mit einem Kranz von auf den Befestigungsflansch 7 einwirkenden Druckschrauben 11 versehen ist. Der Schraubbolzen 8 kann mithilfe dieser Druckschrauben 11 auf eine genau vorausberechenbare Vorspannung vorgespannt werden. Auf diese Weise können die den Befestigungsflansch 7 und den Gegenflansch 10 zusammenspannenden Kräfte mit einfachen Hilfsmitteln exakt eingestellt werden.The separate screw connection, which is used to fix the
Zur drehfesten Verbindung zwischen dem letzten Zahnrad der in dem Tragarm 3 befindlichen Getriebekette und der Antriebswelle des Planetengetriebes dient ein Vielkeil-Verbundelement 12, welches bei angebautem Planetengetriebe von der Versatzseite her in passender Aufnahmeöffnungen im letzten Zahnrad der Getriebekette des Tragarms 3 und der Antriebswelle das Planetengetriebes einschiebbar ist.A non-rotatable connection between the last gear wheel of the gear chain located in the
Die
Die
- 11
- MaschinenkörperMachine body
- 22
- StrebfördererFace conveyor
- 33
- TragarmBeam
- 44th
- SchneidwalzeCutting roller
- 55
- GetriebegehäuseGear housing
- 5a5a
- ringförmiger Gehäuseabschnittannular housing section
- 5b5b
- ringförmiger Gehäuseabschnittannular housing section
- 5c5c
- ringförmiger Gehäuseabschnittannular housing section
- 66th
- SchraubbolzenBolt
- 77th
- BefestigungsflanschMounting flange
- 88th
- SchraubbolzenBolt
- 8a8a
- Gewindethread
- 8b8b
- Gewindethread
- 99
- VorspannmutternPreload nuts
- 1010
- GegenflanschCounter flange
- 1111
- DruckschraubenPressure screws
- 1212th
- Vielkeil-VerbundelementMulti-wedge composite element
Claims (3)
- Shearer loader for mining extraction in longwall mining, comprising a machine body (1) which is movable along a longwall conveyor (2) in the longwall longitudinal direction, and at least one cutting drum (4) which is supported by a support arm (3) that is pivotably fastened to the machine body (1), and said cutting drum is mounted on the free end of the support arm (3) in such a manner that said cutting drum can rotate about an axis that extends parallel to the roofs and perpendicular to the coal face, and said cutting drum can be driven by a drive motor, which is allocated to the support arm (3), via a gear train that is arranged in the interior of the support arm (3) and via a planetary gear that is located on the free end of the support arm (3), and the gear casing (5) of which planetary gear that is connected in a non-rotatable manner to the end section of the support arm (3) consists of annular casing sections (5a, 5b, 5c) that are arranged in a row adjacent to one another in an axial manner and are held together by means of threaded bolts (6) that are located on the periphery of said annular casing sections,
characterised in that
the casing section (5c) of the gear casing (5) adjoining the support arm (3) comprises a separate attachment flange (7) that protrudes radially and that can be fixed by means of a separate screw connection (8, 9) to a suitable mating flange (10) on the free end of the support arm (3). - Shearer loader according to Claim 1, characterized in that a non-rotatable connection is provided between the last gear wheel of the gear train located in the support arm (3) and the drive shaft of the planetary gear by means of a splined composite element (12), which in the case of a planetary gear being fitted, may be slid from the offset side into suitable receiving openings in the last gear wheel of the gear train and the drive shaft of the planetary gear.
- Shearer loader according to Claim 1, characterised in that the separate screw connection (8, 9) for fixing the gear casing (5) to the support arm (3) comprises threaded bolts (8) and pretension nuts (9) that may be mechanically fixed in the pre-stressed position.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL16801138T PL3371418T3 (en) | 2015-11-03 | 2016-10-31 | Shearer loader |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015014081.7A DE102015014081A1 (en) | 2015-11-03 | 2015-11-03 | Shearer |
PCT/EP2016/076189 WO2017076787A1 (en) | 2015-11-03 | 2016-10-31 | Shearer loader |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3371418A1 EP3371418A1 (en) | 2018-09-12 |
EP3371418B1 true EP3371418B1 (en) | 2020-12-02 |
Family
ID=57394523
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16801138.5A Active EP3371418B1 (en) | 2015-11-03 | 2016-10-31 | Shearer loader |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP3371418B1 (en) |
CN (1) | CN108350736B (en) |
AU (1) | AU2016351158B2 (en) |
DE (1) | DE102015014081A1 (en) |
PL (1) | PL3371418T3 (en) |
RU (1) | RU2731857C2 (en) |
WO (1) | WO2017076787A1 (en) |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1157448A (en) * | 1965-10-22 | 1969-07-09 | Coal Industry Patents Ltd | Mining Machine |
GB1415008A (en) * | 1972-10-31 | 1975-12-10 | Coal Industry Patents Ltd | Mineral mining equipment and mineral mining machines incorporating such equipment |
BE875547A (en) * | 1979-04-13 | 1979-10-15 | Legrand M G J | MACHINE FOR DISMANTLING STONES IN UNDERGROUND WORKS |
DE3634290A1 (en) | 1986-10-08 | 1988-04-21 | Eickhoff Geb | Cutting drum equipped with a rotary transmission leadthrough, in particular for machines in underground mining |
DE3835049A1 (en) * | 1988-10-14 | 1990-04-19 | Eickhoff Geb | Cutting drum connected in a rotationally locked manner to the output shaft butt of a reduction gear unit |
RU2065959C1 (en) * | 1993-09-07 | 1996-08-27 | Иван Кириллович Кривоконев | Extraction cutter-and-loader machine |
DE19753353C2 (en) * | 1997-12-02 | 2003-12-04 | Rag Ag | shearer |
RU36035U1 (en) * | 2003-09-22 | 2004-02-20 | Донецкий государственный научно-исследовательский, проектно-конструкторский и экспериментальный институт комплексной механизации шахт "Донгипроуглемаш" | Thin bed shearer |
RU41797U1 (en) * | 2004-06-29 | 2004-11-10 | Открытое акционерное общество "Проектно-конструкторский и экспериментальный институт угольного машиностроения "Гипроуглемаш" | CLEANER |
DE202004015038U1 (en) * | 2004-09-24 | 2005-11-10 | Dbt Gmbh | Drive device for mining extraction machines |
DE102005018120B3 (en) * | 2005-04-15 | 2006-05-04 | Dbt Gmbh | Extraction machine for underground mining has gear arrangement has with compensation shaft passing through cantilever arm and coupled to drive and cutter roller unit via first and second angled gear stages |
US8235470B2 (en) * | 2009-12-24 | 2012-08-07 | Joy Mm Delaware, Inc. | Cutter head containing its motors and gearcase |
DE102011104291A1 (en) * | 2011-06-16 | 2012-12-20 | Robert Bosch Gmbh | planetary gear |
CN202578688U (en) * | 2012-04-25 | 2012-12-05 | 三一重型装备有限公司 | Cutting motor mounting structure of coal mining machine and coal mining machine |
-
2015
- 2015-11-03 DE DE102015014081.7A patent/DE102015014081A1/en not_active Withdrawn
-
2016
- 2016-10-31 PL PL16801138T patent/PL3371418T3/en unknown
- 2016-10-31 EP EP16801138.5A patent/EP3371418B1/en active Active
- 2016-10-31 AU AU2016351158A patent/AU2016351158B2/en active Active
- 2016-10-31 WO PCT/EP2016/076189 patent/WO2017076787A1/en active Application Filing
- 2016-10-31 CN CN201680063895.0A patent/CN108350736B/en active Active
- 2016-10-31 RU RU2018120309A patent/RU2731857C2/en active
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
PL3371418T3 (en) | 2021-05-17 |
WO2017076787A1 (en) | 2017-05-11 |
RU2731857C2 (en) | 2020-09-08 |
AU2016351158B2 (en) | 2021-11-18 |
CN108350736B (en) | 2021-07-06 |
RU2018120309A3 (en) | 2020-02-04 |
CN108350736A (en) | 2018-07-31 |
AU2016351158A1 (en) | 2018-05-10 |
RU2018120309A (en) | 2019-12-04 |
EP3371418A1 (en) | 2018-09-12 |
DE102015014081A1 (en) | 2017-05-04 |
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