EP3117077A1 - Pièce de guidage pour un rabot d'extraction ou à charbon - Google Patents

Pièce de guidage pour un rabot d'extraction ou à charbon

Info

Publication number
EP3117077A1
EP3117077A1 EP15709844.3A EP15709844A EP3117077A1 EP 3117077 A1 EP3117077 A1 EP 3117077A1 EP 15709844 A EP15709844 A EP 15709844A EP 3117077 A1 EP3117077 A1 EP 3117077A1
Authority
EP
European Patent Office
Prior art keywords
guide piece
bolt
guide
recess
leg
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.)
Granted
Application number
EP15709844.3A
Other languages
German (de)
English (en)
Other versions
EP3117077B1 (fr
Inventor
Gerhard Siepenkort
Norbert Hesse
Klaus Duhnke
Uwe Tillessen
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.)
Caterpillar Global Mining Europe GmbH
Original Assignee
Caterpillar Global Mining Europe 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
Priority claimed from DE202014002383.2U external-priority patent/DE202014002383U1/de
Priority claimed from US14/212,642 external-priority patent/US9163501B2/en
Application filed by Caterpillar Global Mining Europe GmbH filed Critical Caterpillar Global Mining Europe GmbH
Priority to PL15709844T priority Critical patent/PL3117077T3/pl
Publication of EP3117077A1 publication Critical patent/EP3117077A1/fr
Application granted granted Critical
Publication of EP3117077B1 publication Critical patent/EP3117077B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • E21C35/08—Guiding the machine
    • E21C35/12—Guiding the machine along a conveyor for the cut material

Definitions

  • the present disclosure generally relates to mining machines for underground mining and, more particularly, to a guide piece for an extraction or coal plough.
  • a so-called extraction or coal plough is used for extracting, for example, coal in a coal-mine.
  • Such an extraction or coal plough is generally supported on a conveyer laid out before a coal head.
  • the conveyer includes a plough guide attached to a side profile of the conveyer.
  • the plough guide includes a guide rail on the upper side of the same, and the plough is guided on the guide rail by a pair of guide claws engaged with the guide rail.
  • a guide piece is provided between each guide claw of the plough and the guide rail.
  • the guide pieces are detachably attached to the guide claws of the plough and can be replaced after having been subjected to wear.
  • 7,097,256 B2 shows an example of a guide piece that slides on a guide rail.
  • the disclosed systems and methods are directed at least in part to improving known systems.
  • the present disclosure relates to a guide piece for a extraction or a coal plough.
  • the guide piece comprises a generally U-shaped guide piece body configured to be inserted into a guide claw of the plough along an insertion direction.
  • the guide piece body includes a first leg, a second leg and a connection portion extending between the first leg and the second leg.
  • a recess is formed in the guide piece body to extend at an angle with respect to the connecting portion from an outer side of the connecting portion to an outer side of one of the first leg and the second leg. The recess is configured for
  • the present disclosure relates to a locking mechanism for a guide piece for an extraction or coal plough.
  • the guide piece is configured to be inserted into a guide claw of the plough along an insertion direction.
  • the locking mechanism comprises a bolt configured to be received in a receiving bore formed in the guide claw and in a recess formed in the guide piece after installation of the guide piece in the guide claw.
  • the bolt further includes an inner bore and an annular groove disposed adjacent to a first end of the bolt.
  • a securing mechanism is configured for engagement with the annular groove when the bolt is received in the receiving bore and the recess to secure the bolt in the receiving bore, to thereby prevent movement of the guide piece at least in a direction opposite to the insertion direction.
  • a guide piece assembly for extraction of a coal plough comprises a guide piece and a locking mechanism.
  • the guide piece comprises a generally U-shaped guide piece body configured to be inserted into a guide claw of the plough along an insertion direction.
  • the guide piece body includes a first leg, a second leg and a connection portion extending between the first leg and the second leg.
  • a recess is formed in the guide piece body to extend at an angle with respect to the connecting portion from an outer side of the connecting portion to an outer side of one of the first leg and the second leg.
  • the locking mechanism comprises a bolt configured to be received in a receiving bore formed in the guide claw and in a recess formed in the guide piece after installation of the guide piece in the guide claw.
  • the bolt further includes an inner bore and an annular groove disposed adjacent to a first end of the bolt.
  • a securing mechanism is configured for engagement with the annular groove when the bolt is received in the receiving bore and the recess to secure the bolt in the receiving bore, to thereby prevent movement of the guide piece at least in a direction opposite to the insertion direction
  • Fig. 1 shows an assembly view of a guide piece to be inserted into a guide claw of a plough according to an exemplary embodiment
  • Fig. 2 shows a sectional view of the guide piece of Fig. 1 installed in the guide claw and secured to the same;
  • Fig. 3 shows a perspective view of a locking member of a locking mechanism for securing the guide piece to the guide claw according to an exemplary embodiment.
  • the present disclosure may be based in part on the realization that, when a guide piece is to be attached to a guide claw of a plough, it is desirable to provide a mechanism for attaching the guide piece that allows use of a guide piece having a relatively short length in the direction of insertion, i.e., the longitudinal direction of the guide piece. This is because, when a mechanism is used where the guide piece is attached to the guide claw at several positions along the longitudinal direction, the guide claw has to be provided with a greater length in the longitudinal direction, resulting in an increase in the loading height during an extraction operation of the plough.
  • the guide piece disclosed herein allows for a shorter guide piece and, correspondingly, a shorter guide claw, resulting in an increase in a space that is available during a loading operation.
  • the present disclosure may be based in part on the realization that, when a guide piece inserted in a guide claw of a plough has to be periodically replaced during operation of the plough, it is desirable to allow for a quick and easy replacement of the guide piece. According to the present disclosure, this is achieved by fixing the guide piece to the guide claw at a single position in the longitudinal direction, i.e., by a single locking mechanism holding the guide piece in place in the longitudinal direction. With the disclosed locking mechanism, the guide piece can be easily detached from the guide claw without having to, for example, loosen a plurality of nuts and bolts.
  • Fig. 1 shows an assembly view of a guide piece 10 to be installed in a guide claw 14 of an extraction or coal plough 100.
  • plough 100 includes guide claw 14 formed on a side of the same. It will be readily appreciated that a second identical guide claw may be formed on an opposite second end of plough 100.
  • Guide claw 14 defines an inner space for receiving guide piece 10 when guide piece 10 is inserted into guide claw 14 along an insertion direction dl from outside of plough 100.
  • inner surface of guide claw 14 may be configured to include one or more support structures for supporting guide piece 12 when it is inserted into guide claw 14, thereby positively supporting guide piece 12 inside guide claw 14.
  • a stop may be provided inside guide claw 14 to define an end position of guide piece 10 in guide claw 14. In some embodiments, no stop may be provided inside guide claw 14, and the end position of guide piece 10 may be defined by a stop 11 formed as a projection on one end of guide piece 10 as shown in Fig. 1.
  • guide piece 10 includes a generally U-shaped guide piece body 12 configured to be inserted into guide claw 14 of plough 100 along insertion direction dl.
  • Guide piece 12 may be configured to be positively supported at least in part in guide claw 14 by the afore-mentioned support structures.
  • a first projection 11a may be formed on stop 11 to project in the direction of insertion dl
  • a second projection 12a may be formed to project from the opposite end of guide piece body 12, for example, also in the direction of insertion dl .
  • First and second projections 11a, 12a may be configured to engage corresponding support structures formed in or on guide claw 14.
  • first projection 11a may be configured to engage an outer edge of guide claw 14, and second projection 12a may be configured to engage with a groove or the like formed inside guide claw 14. It will be readily appreciated that in other embodiments different configurations may be used to support at least in part guide piece 10 inside guide claw 14 when guide piece 10 is inserted into guide claw 14.
  • U-shaped guide piece body 12 includes a depending first leg 16, a depending second leg 18 and a plane connecting portion 20 extending between first leg 16 and second leg 18 (see also Fig. 2). Further, guide piece body 12 includes a recess 22 formed in guide piece body 12. Recess 22 extends at an angle a (see Fig. 2) with respect to plane connecting portion 20 from an outer side of connecting portion 20 to an outer side of one of first leg 16 and second leg 18 (in the example shown in Fig. 2, recess 22 is formed to extend from
  • guide piece 10 may have a symmetrical configuration, i.e., may comprise another recess (a second recess) 23 which may have substantially the same configuration as that of recess 22 and may be formed on the opposite side of guide piece 10, i.e., additional recess 23 may extend from connecting portion 20 to first leg 16 in the same manner as recess 22 extends from connection portion 20 to second leg 18 (see Fig. 2).
  • a second recess another recess
  • additional recess 23 may extend from connecting portion 20 to first leg 16 in the same manner as recess 22 extends from connection portion 20 to second leg 18 (see Fig. 2).
  • Recess 22 is configured for engagement with a locking mechanism
  • locking mechanism 24 after having been inserted into guide claw 14 to prevent movement of guide piece 10 in the insertion direction dl.
  • locking mechanism 24 includes a bolt 26, a locking member 38 and a pin 40, which will be described in more detail below.
  • Guide piece 12 and locking mechanism 24 may form a guide piece assembly 200, as shown in Fig. 1.
  • FIG. 2 shows a sectional view of guide piece 10 installed in guide claw 14 and locked in position inside guide claw 14 by locking mechanism 24.
  • FIG. 2 As shown in Fig. 2, after guide piece 10 has been inserted into guide claw 14, recess 22 is aligned with a receiving bore 34 formed in guide claw 14 and extending through guide claw 14 from an upper side to a side surface of the same.
  • receiving bore 34 extends at the same angle a with respect to the outer surface of connecting portion 20 of guide piece 10 as recess 22. Accordingly, when guide piece 10 is received in guide claw 14, bolt 26 can be inserted into receiving bore 34 from above to extend through receiving bore 34 and recess 22. In this manner, movement of guide piece 10 in insertion direction dl (see Fig. 1), i.e., in the direction perpendicular to the sectional view shown in Fig.
  • recess 22 may be configured as a single recess formed on each side of guide piece body 12.
  • single recess 22 may be formed in a central portion of guide piece body 12 in the longitudinal direction of the same, which longitudinal direction corresponds to insertion direction dl, as will be readily appreciated.
  • recess 22 is formed as a groove extending from the outer side of connecting portion 22 to the outer side of one of first leg 16 and second leg 18 with a curved profile.
  • the curved profile may be a generally semi-circular profile matching the profile of bolt 26. Accordingly, guide piece 10 can be securely held in place by engagement of bolt 26 within corresponding recess 22.
  • recess 22 may be formed as a groove having a different profile. Further, it will be readily appreciated that, while recess 22 is shown in Fig.
  • recess 22 may be formed to extend through guide piece body 12, i.e., may be opened toward an inner side of guide piece body 12. It is obvious that any appropriate configuration for recess 22 and corresponding bolt 26 may be used that allows fixing the position of guide piece 10 in the longitudinal direction by engagement of bolt 26 with recess 22.
  • bolt 26 includes a first end 32 and an opposite second end 33, and an inner bore 28 extending through bolt 26 from first end 32 to second end 33.
  • inner bore 28 includes a first portion having a first diameter adjacent to first end 32, and a second portion adjoining the first portion and having a second diameter that is greater than the first diameter.
  • annular groove 30 may be formed in bolt 26 adjacent to first end 32. It should be appreciated that, in other exemplary embodiments, inner bore 28 may not extend all the way through bolt 26, i.e., bolt 26 may be closed at second end 33.
  • inner diameter of inner bore 28 may be constant.
  • Locking member 38 is configured to engage with groove 30 when bolt 26 is inserted into receiving bore 34 such that a side wall of groove 30 disposed toward second end 33 is aligned with an abutment surface 14a defining receiving bore 34 of claw 14. By engagement of locking member 38 with annular groove 30 in this position, further movement of bolt 36 into receiving bore 34 is prevented.
  • pin 40 which may be formed with an outer diameter that is somewhat larger than the diameter of inner bore 28 of bolt 26, may be driven into inner bore 28 by applying appropriate force, for example, using a hammer or the like, through a locking member inner bore 48 (see Fig. 3).
  • a hammer or the like may be provided in first end 32 of bolt 26.
  • bolt 26 may be expanded in the region where pin 40 is inserted, and may therefore be secured inside receiving bore 34.
  • locking member 38 in particular, a portion of locking member 38 in engagement with bolt 26 may also be expanded to secure locking member 38 to guide claw 14. As shown in Fig.
  • locking member 38 is shown in more detail.
  • locking member 38 includes a substantially flat base 44 having a cut 46 extending from an outer edge 44a of base 44 toward a center of the same. Cut 46 has a width w that corresponds to a diameter of bolt 26 at the position where annular groove 30 is formed.
  • Locking member 38 further includes a head portion 46 extending from base 44. Head portion 46 includes arcuate outer surface 46a, a bottom surface 46b facing base 44 and connected to arcuate surface 46a, a distal end 46c to which arcuate surface 46a extends from bottom surface 46b, and a tapered surface 46d extending from distal end 46c to outer edge 44a of base 44.
  • locking member 38 includes locking member inner bore 48 formed at least in head portion 46 and configured to receive pin 40 when pin 40 is driven into inner bore 28 of bolt 26.
  • base 44 of locking member 38 is configured to engage with annular groove 30 of bolt 26, and both base 44 and arcuate surface 46a are configured to abut against abutment surface 14a, 14b when locking member 38 is brought into engagement with bolt 26. Accordingly, locking member 38 is held in position by abutment against abutment surfaces 14a, 14b and is configured to engage with a flange at first end 32 of bolt 26 which is defined by annular groove 30 formed in bolt 26.
  • locking member 38 includes base 44 and head portion 46 including locking member inner bore 48
  • locking member 38 may have a different configuration.
  • head portion 46 may be omitted, and locking member 38 may be formed by base 44 only.
  • Any appropriate configuration can be used for locking member 38, as long as it allows for engagement with annular groove 30 of bolt 26 to limit movement of bolt 26 in the direction of insertion into receiving bore 34.
  • locking member inner bore 48 may be formed with the same diameter as inner bore 28 of bolt 26, in other embodiments, diameter of locking member inner bore 48 may be different from diameter of inner bore 28. Accordingly, in some embodiments, only bolt 26 may be expanded when pin 40 is driven into inner bore 28, and locking member 38 may be indirectly expanded by the expansion of first end 32 of bolt 26.
  • One exemplary machine suited to the disclosure is an underground mining machine such as an extraction or coal plough. It will be readily appreciated, however, that the systems and methods disclosed herein can be applied to other systems where a machine is guided on a guide rail, and guide pieces are inserted between the guide rail and a corresponding guide claw of the machine.
  • a method of installing and/or replacing a guide piece 10 in a guide claw 14 comprises the following steps.
  • guide piece 10 When guide piece 10 is to be installed in guide claw 14, guide piece 10 may be provided and inserted into an inner space formed in guide claw 14 along insertion direction dl (see Fig. 1). Guide piece 10 may be configured to be positively supported at least in part by guide claw 14 via projections 11a, l ib. Movement of guide piece 10 in insertion direction dl may be limited by stop 11 formed on one end of guide piece 10.
  • locking member 38 is brought into engagement with annular groove 30 formed in first end 32 of bolt 26, limiting movement of bolt 26 inside receiving bore 34 and recess 22.
  • base 44 of locking member 38 abuts against abutment surface 14a
  • arcuate surface 46a of locking member 38 abuts against corresponding abutment surface 14b.
  • pin 40 is driven into inner bore 28 of bolt 26. Due to pin 40 having a slightly larger diameter than the diameter of inner bore 28 of bolt 26, bolt 26 is expanded at first end 32, thereby securing bolt 26 inside receiving bore 34, and also securing locking member 38 by also expanding the same. Accordingly, bolt 26 and, consequently, guide piece 10 are securely attached inside guide claw 14.
  • guide piece 10 may be worn and may need to be replaced after a certain number of operating hours.
  • pin 40 can be driven further into bolt 26 by use of an appropriate tool, for example, a mandrel or the like. This may be facilitated by inner bore 28 being formed with a larger diameter in the portion of bolt 26 extending from annular groove 30 towards second end 33, as shown in Fig.2. Therefore, once pin 40 has been driven past annular groove 30, pin 40 may fall out of bolt 26 at second end 33. Accordingly, second end 32 of bolt 26 will revert to its original form with a reduced diameter, and locking member 38 may be removed from bolt 26. After removal of locking member 38, bolt 26 may be removed from receiving bore 34 either through an opening formed in an outer side surface of guide claw 14 (see Fig. 1), or from the upper side of guide claw 14, i.e., bolt 26 may be pulled out from above.
  • Removal of bolt 26 from receiving bore 34 allows movement of guide piece 10 in the direction opposite to insertion direction dl to be removed from guide claw 14. In this manner, guide piece 10 can be easily removed from guide claw 14 without having to loosen a plurality of nuts and bolts or the like. After removal of worn guide piece 10, a new guide piece 10 may be inserted into guide claw 14 as a replacement part in the above-described manner.

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)
  • Connection Of Plates (AREA)
  • Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)

Abstract

Pièce de guidage remplaçable (10) pour un rabot d'extraction ou à charbon (100). La pièce de guidage remplaçable (10) comprend un corps (12) de pièce de guidage globalement en forme de U conçu pour être introduit dans une griffe de guidage (14) du rabot (100). Un unique évidement (22) est formé dans une partie centrale d'un corps (12) de pièce de guidage pour s'étendre selon un angle (α) depuis un côté supérieur du corps (12) de pièce de guidage jusqu'à une surface latérale de celui-ci. Un mécanisme de verrouillage (24) est conçu pour venir en prise avec l'unique évidement (22) afin d'empêcher le mouvement de la pièce de guidage (10) dans la direction longitudinale après l'introduction de la pièce de guidage (10) dans la griffe de guidage.
EP15709844.3A 2014-03-14 2015-03-12 Pièce de guidage pour un rabot d'extraction ou à charbon Active EP3117077B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15709844T PL3117077T3 (pl) 2014-03-14 2015-03-12 Element prowadnicowy do pługa wydobywczego lub węglowego

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE202014002383.2U DE202014002383U1 (de) 2014-03-14 2014-03-14 Führungsstück für einen Gewinnungs- oder Kohlenhobel
US14/212,642 US9163501B2 (en) 2014-03-14 2014-03-14 Guide piece for an extraction or coal plough
PCT/EP2015/000548 WO2015135654A1 (fr) 2014-03-14 2015-03-12 Pièce de guidage pour un rabot d'extraction ou à charbon

Publications (2)

Publication Number Publication Date
EP3117077A1 true EP3117077A1 (fr) 2017-01-18
EP3117077B1 EP3117077B1 (fr) 2018-12-26

Family

ID=52682660

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15709844.3A Active EP3117077B1 (fr) 2014-03-14 2015-03-12 Pièce de guidage pour un rabot d'extraction ou à charbon

Country Status (4)

Country Link
EP (1) EP3117077B1 (fr)
CN (1) CN106257993B (fr)
PL (1) PL3117077T3 (fr)
WO (1) WO2015135654A1 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1281376B (de) * 1966-06-15 1968-10-24 Maschfab Eisengiesserei Beien Gewinnungsvorrichtung, bestehend aus Strebfoerderer und Kohlenhobel
DE3309188A1 (de) * 1983-03-15 1984-09-27 Gebr. Eickhoff Maschinenfabrik U. Eisengiesserei Mbh, 4630 Bochum Fuehrungsgestell zur aufnahme eines strebfoerdermittels und zum tragen und fuehren einer gewinnungsmaschine, insbesondere einer walzenschraemmaschine
DE202004001301U1 (de) * 2004-01-28 2004-04-01 Dbt Gmbh Bergbaumaschine mit lösbarem Führungsstück und Führungsstück hierfür
DE202009000787U1 (de) * 2009-01-20 2010-06-17 Bucyrus Europe Gmbh Hobel für die untertägige Gewinnung und Führungselemente hierfür
DE202011001803U1 (de) * 2011-01-22 2011-04-07 Komotzki Bergbaubedarf Gmbh Kohlenhobel mit U-förmigem Führungsstück
CN103016003B (zh) * 2011-08-31 2017-11-03 刘素华 一种隔振采煤机

Also Published As

Publication number Publication date
CN106257993A (zh) 2016-12-28
CN106257993B (zh) 2021-10-08
EP3117077B1 (fr) 2018-12-26
WO2015135654A1 (fr) 2015-09-17
PL3117077T3 (pl) 2019-04-30

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