EP0362455A1 - Meisselanordnung - Google Patents

Meisselanordnung Download PDF

Info

Publication number
EP0362455A1
EP0362455A1 EP88710033A EP88710033A EP0362455A1 EP 0362455 A1 EP0362455 A1 EP 0362455A1 EP 88710033 A EP88710033 A EP 88710033A EP 88710033 A EP88710033 A EP 88710033A EP 0362455 A1 EP0362455 A1 EP 0362455A1
Authority
EP
European Patent Office
Prior art keywords
chisel
receiving body
cutting direction
pocket
projection
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Withdrawn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
EP88710033A
Other languages
German (de)
English (en)
French (fr)
Inventor
Alois Hauschopp
Karl Heinz Ginzel
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.)
Langerbein-Scharf & Co Kg GmbH
Original Assignee
Langerbein-Scharf & Co Kg 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 to DE3806363A priority Critical patent/DE3806363A1/de
Application filed by Langerbein-Scharf & Co Kg GmbH filed Critical Langerbein-Scharf & Co Kg GmbH
Priority to EP88710033A priority patent/EP0362455A1/de
Priority to PCT/DE1988/000545 priority patent/WO1990002865A1/de
Priority to EP88907640A priority patent/EP0389482A1/de
Publication of EP0362455A1 publication Critical patent/EP0362455A1/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • E21C27/32—Mineral freed by means not involving slitting by adjustable or non-adjustable planing means with or without loading arrangements
    • E21C27/44—Planing knives
    • 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
    • E21C35/18—Mining picks; Holders therefor
    • E21C35/19—Means for fixing picks or holders

Definitions

  • the invention relates to a chisel arrangement for a peeling extraction device in underground mining according to the features in the preamble of claim 1.
  • Such a chisel arrangement is part of the prior art through DE-PS 12 91 708. It comprises a receiving body which can be provided one above the other in a multiple arrangement on the coal impact side of a planer body.
  • the receiving bodies are preferably welded on.
  • a storage pocket for a planing chisel is formed in each receiving body and is open towards the excavation joint.
  • Two undercuts are formed in the interior of the storage pocket, of which the undercut located at the front in the cutting direction has an opening.
  • planer chisel On the planer chisel two nose-like projections are provided which are adapted to the undercuts of the bearing pocket and which serve to fix the planer chisel in the receiving body.
  • the length of the projection in the cutting direction at the back, on the one hand, and the smallest length extension of the planing chisel in the cutting direction in relation to the length of the insertion opening of the storage pocket are designed such that for mounting the planing chisel, it can be pivoted into the storage pocket on the discharge side and pivoted out in the opposite direction for disassembly.
  • planer chisel is locked in the storage pocket with the aid of a chuck which, after the planer chisel has been inserted into the bearing pocket and the rear nose-like in the cutting direction Projection is inserted into the corresponding undercut between the nose-like projection lying at the front in the cutting direction and the wall of the storage pocket delimiting the undercut lying at the front in the cutting direction.
  • the position of the chuck and thus the planing chisel is then ensured by a spring pin which is driven into coaxial holes in the chuck and the chisel nose located next to it.
  • a major disadvantage of the known chisel arrangement is seen in the need to adapt the planing chisel very precisely to the bearing pocket in order to be able to limit bearing play and thereby wear and deformation stresses to a minimum. This is because, during operational use, the wall section delimiting the insertion opening of the storage pocket at the rear end in the cutting direction is extremely heavily loaded by the engagement of the planing chisel in the excavation joint, in this area it can comparatively quickly lead to greater play between the planing chisel and the storage pocket come with the result that even slight forces acting on the planing chisel are then sufficient to push it out of the storage pocket.
  • a disadvantage of the known chisel arrangement is also that the chucks and the dowel pins are very small components, which can consequently easily be lost and thereby form a permanent annoyance for the miner when replacing planing chisels.
  • the clamping length of a planing chisel lying transversely to the cutting direction is dimensioned briefly, in particular when compared to the freely projecting length of the planing chisel, when the latter attacks above or below a rock storage located in the excavation joint.
  • the then relatively long free lever arm of the planer chisel leads to higher stresses, in particular in the area of contact of the planer chisel with the receiving body in the rear wall region of the insertion opening in the cutting direction.
  • This fact also often contributes to the fact that the play between the planer chisel and the bearing pocket increases after a comparatively short time due to wear and deformation stresses to an extent that can very quickly lead to a chisel loss.
  • the invention has for its object to improve the chisel arrangement described in the preamble of claim 1 so that on the one hand the assembly or disassembly of a chisel is facilitated and on the other hand its service life is increased.
  • a significant advantage of the invention is first of all that the storage pocket is continuously open in a sector which is directed both in the cutting direction and towards the excavation joint.
  • a chisel to be reinserted into a storage pocket can first be inserted into the storage pocket against the cutting direction. Only then is it necessary to move it in the direction of removal so that the insertion end facing away from the excavation joint can be inserted into the end section of the storage pocket facing away from the chisel edge and the shoulder into the sector of the storage pocket open in the cutting direction.
  • This introduction option makes work much easier in practice. The miner no longer needs to carry out the assembly exclusively from the side of the excavation joint.
  • Another advantage is the fact that the chisel is now supported with a considerable length of its back surface on the one hand on the pocket bottom and on the other hand on the nose-like projection. This noticeably reduces the specific surface pressure when the chisel engages in the excavation joint. As a result, there is less frictional wear and the stresses on deformation are substantially reduced. The torque caused by the engagement of the chisel in the excavation joint is perfectly absorbed by the secure position of the insertion end in the storage pocket.
  • the large support surface of the chisel on the bottom of the storage pocket and on the projection also no longer leads to problems with relatively long freely projecting chisels, as are necessary, for example, above and below rock deposits. Even then, the surface pressures caused by the higher torques are absorbed perfectly and without deformation. The danger that the chisel can be squeezed out of the storage pocket in a short time due to wear and / or deformation is eliminated.
  • the chisel positively engages with the shoulder projecting in the cutting direction in the sector of the storage pocket which is open here, it initially receives an additional position securing in the receiving body. Furthermore, this ensures that the chisel has a defined working position in the receiving body, which has its relevant meaning especially in the underground mine operation due to the special requirements there. In particular, the insertion of the spring pin after the chisel assembly is made considerably easier.
  • the tangential position of the dowel pin to the chisel has the advantage that the dowel pin no longer has to absorb any stresses which are caused by the engagement of the chisel in the excavation joint. Such stresses are transferred directly from the chisel directly over a large area to the receiving body. Furthermore, the upper recess for the dowel pin can always be produced with a defined distance from the underside of the chisel. This means that after driving in the dowel pin, which is usually formed by an adapter sleeve, the dowel pin, supported on the receiving body, can exert an additional bracing effect for the chisel regardless of the manufacturing tolerances. This bracing effect helps to secure the operating position of the chisel in the receiving body itself over a longer period of use and to prevent the formation of play with the chisel being loosely seated as a result.
  • the chisel does not experience any obstacles during the loosening process.
  • the insertion end of the chisel according to the features of claim 2 is preferably a stable rectangular design.
  • the length can be dimensioned approximately equal to its width because the chisel is first inserted into the storage pocket against the cutting direction and no longer has to be pivoted in, as in the known case, exclusively from the dismantling side.
  • the accessibility of the pocket end section from the conveyor side can be improved in order to facilitate the disassembly of the chisel.
  • the features of claim 3 improve the chisel assembly and the working position of the chisel during extraction.
  • the features of claim 4 ensure a largely unimpeded outflow of the mined mineral.
  • the areas of the receiving body located between two superposed chisels can consequently participate in the release process at least to a limited extent.
  • the fitting bore extends essentially only over a part of the chisel and the wall section of the receiving body lying at the front in the cutting direction.
  • the advantage is associated that even extremely tight chisels can be solved comparatively easily by the fact that the miner attaches a mining hammer to the chisel and can thus drive it out of the storage pocket.
  • the miner has an optical control option for the correct insertion position of the chisel in the receiving body.
  • the trapezoidal design of the receiving body according to the features of claim 9 is adapted to the conditions of the peeling extraction and the removal of the extracted extraction material into the conveyor.
  • a chisel arrangement has thus been created within the scope of the invention, which takes into account the underground conditions in the peeling extraction on the one hand and the need to remove and install chisels in the longwall on the other hand in a particularly high degree.
  • the wear and deformation stresses of a chisel and the receiving body holding it are reduced to a minimum as a result of large contact surfaces, and the assembly and disassembly of a chisel is substantially facilitated by the fact that necessary manipulations from the area between the Shock and the receiving body in the area in front of the receiving body, as seen in the cutting direction, are shifted. Because of this, the risk to the miner when replacing chisels is also reduced considerably, since the time within which the miner has to work relatively unprotected in the area of the mining impact is considerably reduced.
  • FIG. 1, 1 designates the construction of a coal plane, which is otherwise not illustrated in more detail and which is forcibly guided to loosen the coal present in the mine 2 on a conveyor laid in the longitudinal direction of the strut 3 in order to remove the coal.
  • a plurality of housing-like receiving bodies 4, in particular in a step-like manner, are fastened one above the other on the planer structure 1 in accordance with the respective geological conditions.
  • the determination is usually made by welding.
  • the receiving body 4 can also be articulated individually or in groups to the planer structure 1.
  • the receptacle 4 serve for the storage of planing chisels 5 (see FIGS. 1 and 2) which are provided with hard metal cutting edges 6 to increase their service life.
  • the free length of the planing chisel 5 projecting relative to the receiving bodies 4 to the dismantling joint 2 varies depending on the condition of the mine 2, for example whether or not there are strip-like rock deposits in the mine 2.
  • the planing chisels 5 arranged above and below such rock deposits are provided with a greater free length than those planing chisels which are located in the high area of the rock deposits.
  • each planing chisel 5 is designed like a plate. Its thickness D is the same everywhere.
  • the planing chisel 5 has an approximately parallelogram-like shape, so that it has a free cutting surface 7 behind the hard metal cutting edge 6 and a discharge surface 8 in the cutting direction SR for the material to be extracted into the conveyor.
  • the front 8 (discharge surface 8) and back surface 9 of the planer bit 5 run largely parallel to one another ( Figure 2).
  • the insertion end 10 of the planing chisel 5 is adapted in a form-fitting manner to a storage pocket 11 which is open both in the cutting direction SR and towards the excavation joint 2.
  • the end section 12 of the bearing pocket 11 facing away from the chisel cutting edge 6 is open on the side 13 of the receiving body 4 facing away from the excavation joint 2. Otherwise, the storage pocket 11 runs largely parallel to the front side 14 of the receiving body 4, which extends at an angle to the cutting direction SR.
  • the back surface 9 of the planing chisel 5 is supported both on the bottom 15 of the bearing pocket 11 and on a nose-like projection 16 provided in the extension of the bottom 15 of the bearing pocket 11 with a width matched to the thickness D of the chisel 5.
  • the result of the engagement of the planing chisel 5 in the excavation 2 Called torque is also absorbed over a large area by the engagement of the insertion end 10 in the bearing pocket 11.
  • the back surface 17 of the nose-like projection 16 lying at the rear in the cutting direction SR runs approximately parallel to the front side 14 of the receiving body 4.
  • the front side 8 of the planing chisel 5 protrudes from the front side 14 of the receiving body 4.
  • a force P can be applied to the shoulder 18 of the planer bit 5 without problems in order to release the planer bit 5, for example with the aid of a breaker.
  • the wall sections 20 of the receiving body 4 that laterally delimit the area 19 of the storage pocket 11 that is open in the cutting direction SR are pointed like a chisel and are designed to be wear-resistant at least with respect to the edges 28.
  • a clamping sleeve 21 which is formed in a bore 22 formed partly in the planing chisel 5, partly in the receiving body 4, partly in the projection 16 in the plane of the upper parting line 23 between a planing chisel 5 and the receiving body 4 .
  • the longitudinal axis 24 of the bore 22 extends perpendicular to the front 14 of the receiving body 4.
  • the bore 22 is - starting from the front 14 - gradually increased in diameter, so that to release the planer bit 5, the clamping sleeve 21 only in the larger diameter section 25 of the Hole 22 needs to be driven.
  • the clamping sleeve 21 is, however, also accessible from the rear side 26 of the essentially trapezoidal receiving body 4 or from the nose-like projection 16.
  • the lower chisel 5 also shows that the part 27 of the recess 22 formed in the chisel 5 can also be shaped like a trough, the width B being larger than the diameter of the spring pin 21.

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)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
EP88710033A 1987-03-03 1988-09-03 Meisselanordnung Withdrawn EP0362455A1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE3806363A DE3806363A1 (de) 1987-03-03 1988-02-27 Meisselanordnung
EP88710033A EP0362455A1 (de) 1987-03-03 1988-09-03 Meisselanordnung
PCT/DE1988/000545 WO1990002865A1 (de) 1987-03-03 1988-09-03 Meisselanordnung
EP88907640A EP0389482A1 (de) 1987-03-03 1988-09-03 Meisselanordnung

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE3706764 1987-03-03
EP88710033A EP0362455A1 (de) 1987-03-03 1988-09-03 Meisselanordnung
PCT/DE1988/000545 WO1990002865A1 (de) 1987-03-03 1988-09-03 Meisselanordnung

Publications (1)

Publication Number Publication Date
EP0362455A1 true EP0362455A1 (de) 1990-04-11

Family

ID=42174287

Family Applications (2)

Application Number Title Priority Date Filing Date
EP88710033A Withdrawn EP0362455A1 (de) 1987-03-03 1988-09-03 Meisselanordnung
EP88907640A Withdrawn EP0389482A1 (de) 1987-03-03 1988-09-03 Meisselanordnung

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP88907640A Withdrawn EP0389482A1 (de) 1987-03-03 1988-09-03 Meisselanordnung

Country Status (3)

Country Link
EP (2) EP0362455A1 (cs)
DE (1) DE3806363A1 (cs)
WO (1) WO1990002865A1 (cs)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103362506A (zh) * 2013-07-17 2013-10-23 王浩 用于刨煤机的刨煤刀具

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU744716B2 (en) 1998-01-29 2002-02-28 Dbt Deutsche Bergbau-Technik Gmbh Pick system for mining ploughs, in particular coal ploughs

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1291708B (de) * 1965-10-16 1969-04-03 Gewerk Eisenhuette Westfalia Meissel fuer Kohlenhobel, bestehend aus einem Schaftteil und einem auswechselbaren Schneidenteil
DE3411602A1 (de) * 1982-11-13 1985-10-03 Peters, Albert, 4000 Düsseldorf Gewinnungseinrichtung mit dreh-kippmeissel und abgedichteter meisseltasche
DE8633094U1 (de) * 1986-12-10 1987-02-19 Halbach & Braun Industrieanlagen, 5600 Wuppertal Werkzeugaggregat für Gewinnungsmaschinen, insbesondere Kohlenhobel oder Schrämmaschinen
DE3631216A1 (de) * 1986-09-13 1988-03-24 Marks Gmbh Fraeswalze fuer strassenfraesmaschinen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1291708B (de) * 1965-10-16 1969-04-03 Gewerk Eisenhuette Westfalia Meissel fuer Kohlenhobel, bestehend aus einem Schaftteil und einem auswechselbaren Schneidenteil
DE3411602A1 (de) * 1982-11-13 1985-10-03 Peters, Albert, 4000 Düsseldorf Gewinnungseinrichtung mit dreh-kippmeissel und abgedichteter meisseltasche
DE3631216A1 (de) * 1986-09-13 1988-03-24 Marks Gmbh Fraeswalze fuer strassenfraesmaschinen
DE8633094U1 (de) * 1986-12-10 1987-02-19 Halbach & Braun Industrieanlagen, 5600 Wuppertal Werkzeugaggregat für Gewinnungsmaschinen, insbesondere Kohlenhobel oder Schrämmaschinen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103362506A (zh) * 2013-07-17 2013-10-23 王浩 用于刨煤机的刨煤刀具

Also Published As

Publication number Publication date
DE3806363A1 (de) 1988-09-15
WO1990002865A1 (de) 1990-03-22
EP0389482A1 (de) 1990-10-03
DE3806363C2 (cs) 1989-04-06

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