EP2108783A2 - Corps de base à tête de découpage et tête de découpage pour une machine de creusement ou d'extraction - Google Patents

Corps de base à tête de découpage et tête de découpage pour une machine de creusement ou d'extraction Download PDF

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Publication number
EP2108783A2
EP2108783A2 EP09155812A EP09155812A EP2108783A2 EP 2108783 A2 EP2108783 A2 EP 2108783A2 EP 09155812 A EP09155812 A EP 09155812A EP 09155812 A EP09155812 A EP 09155812A EP 2108783 A2 EP2108783 A2 EP 2108783A2
Authority
EP
European Patent Office
Prior art keywords
cutting head
holders
head core
core
casting
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Withdrawn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
EP09155812A
Other languages
German (de)
English (en)
Other versions
EP2108783A3 (fr
Inventor
Klaus Ertmer
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.)
Erkat Spezialmaschinen und Service GmbH
Original Assignee
Erkat Spezialmaschinen und Service 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 Erkat Spezialmaschinen und Service GmbH filed Critical Erkat Spezialmaschinen und Service GmbH
Publication of EP2108783A2 publication Critical patent/EP2108783A2/fr
Publication of EP2108783A3 publication Critical patent/EP2108783A3/fr
Withdrawn legal-status Critical Current

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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
    • E21C25/10—Rods; 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
    • E21C25/16—Machines slitting solely by one or more rotating saws, cutting discs, or wheels
    • E21C25/18—Saws; Discs; Wheels
    • 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
    • E21C27/22—Mineral freed by means not involving slitting by rotary drills with breaking-down means, e.g. wedge-shaped drills, i.e. the rotary axis of the tool carrier being substantially perpendicular to the working face, e.g. MARIETTA-type
    • 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
    • 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 present invention relates to a cutting head and a cutting head body for a tunneling machine or for a mining machine and a method for producing the cutting head body.
  • Propulsion and mining machines are used, for example, in mining, opencast mining and civil engineering.
  • Cutting heads serve, for example, the creation of trenches in the ground, the breaking up of roads and other sealed surfaces or also the tunneling during tunneling.
  • a cutting head for propulsion and mining machines which has a cutting head core of a plurality of annular core discs and an attached Stirnkalotte.
  • On the circumference of the forehead calotte several chisel holders are distributed to which chisels are attached.
  • the chisel holders also serve as conveyor elements.
  • the bit holder are attached to corresponding bit holder approaches on Stirnkalotte by screw, whereby the production of this prior art cutting head requires a lot of effort.
  • the DE 35 14 446 A1 shows a cutting head of an extraction or driving machine having at its periphery helical, chisel-set webs, the spaces of which serve the material removal.
  • the webs for holding the chisel are welded to the circumference of the cutting head. The welding of the webs proves to be costly, since an accurate positioning of the webs is to ensure.
  • the DE 33 26 859 C2 shows a multi-part cutting roller for a mining mining machine with an approximately conical facing the excavation end ring and a tubular body, the abbouhyroid work has a larger diameter than the offset side.
  • On the pipe body at least one helical spiral is arranged, which has as well as the closing ring several bit holder for the attachment of Schrißißeln.
  • the tubular body is preferably formed as a casting with the same wall thickness, to which the coil is welded to the bit holders. This weld requires accurate positioning of the coil and bit holders.
  • the production of the welded connection is complicated because it can not be automated.
  • the connection point to be produced is only cumbersome to reach from all sides.
  • Another disadvantage of this known Schrämwalze is that the cutting roller when welding the coil and the chisel holder can forgive up to 5 mm.
  • the US 2,800,302 relates to a cutting head body for a mining machine, such as a masonry drill or auger.
  • the cutting head body is rotatable about a fixedly coupled shaft. It is made in one piece and has frustoconical openings for attaching chisels.
  • the openings are preferably made using a machine tool, in particular by drilling and extend obliquely to the axis of rotation of the cutting head body. In these openings, the chisels are pressed.
  • the object of the invention is based on the US 2,800,302 therein, a cutting head body or a cutting head for a propulsion or mining machine provide, for which no increased effort for largely arbitrary arrangement and attachment of the bit holder is required.
  • the cutting head according to the invention is intended for a propulsion or for a mining machine and has a cutting head body with cutting head core and a plurality of differently shaped chisel holders.
  • the chisel holders are used to hold chisels. These may be interchangeable or non-replaceable chisels.
  • the cutting head core and at least several of the bit holder consist of a single cast workpiece.
  • the cutting head according to the invention thus does not have a separately produced connection between the cutting head core and the cast chisel holders, such as a welded or screwed connection, which was produced only after the production of the cast workpiece. This eliminates all additional fasteners between cutting head core and chisel holders.
  • the different shape of the bit holder facilitates demolding of the cast workpiece during its manufacture.
  • the cutting head core and the cast chisel holder are made of the same cast material.
  • the cutting head moreover has one or more active drive units or is connected via power transmission means with a central drive unit of the cutting head supporting construction machine.
  • the main advantage of the cutting head according to the invention is that it can be produced with little effort and yet has accurately aligned and highly resilient tool holder for receiving the chisel.
  • chisel holder for example, in outstanding positions on the cutting head core, be mounted as individual components on the cast workpiece.
  • all bit holders and the cutting head core consist of a single cast workpiece.
  • the cutting head core is formed as a hollow cylinder.
  • the bit holders are circumferentially distributed on the outer shell on the cutting head core.
  • Such an embodiment is suitable for propulsion and mining machines with a wide range of applications.
  • the cutting head core can also be adapted to other applications, for example by a conical basic shape or by a stepped shape.
  • the bit holders may be concentrated on particular areas of the surface of the cutter core.
  • the bit holders are preferably distributed with a pitch error on an outer shell of the cutter head core, i. the bit holder are not exactly evenly distributed on the outer shell of the cutting head core arranged. Such a design helps to avoid resonances in the operation of the cutting head.
  • the cutting head according to the invention may comprise further components, for example an intermediate ring for fastening the cutting head core or webs for material removal.
  • an intermediate ring for fastening the cutting head core or webs for material removal may also comprise a plurality of cutting head body, each having bit holder and together with these consist of a single cast workpiece.
  • the method according to the invention for producing a cutting head for a tunneling machine or for a mining machine comprises first a step for providing a casting mold for casting a cutting head main body with a cutting head core and with a plurality of differently shaped bit holders.
  • This shape can be a permanent or lost shape.
  • the mold has a cavity which includes the shape of the cutter core to be manufactured, including the bit holders.
  • the casting mold is poured with a casting material.
  • the casting material can be introduced by gravity or by a generated overpressure in the mold.
  • a solidification of the cast material so that a solid cast workpiece is formed.
  • This cast workpiece forms the cutting head body with the differently shaped chisel holders formed thereon.
  • the cutting head core and the cast chisel holders are thus formed by a single cast workpiece.
  • a demolding of the cast workpiece takes place, in which the casting mold is removed from the cast workpiece.
  • the particular advantage of the inventive method for producing a cutting head is that the production of the cutting head core and the bit holder can be done in a single step and also the step for connecting the cutting head core can be completely eliminated with the bit holders.
  • the inventive method requires no complex alignment of the bit holder with respect to the cutting head core.
  • the inventive method preferably includes a post-processing step of the cast workpiece, wherein the surface of the cast workpiece is machined by a machining process, such as milling.
  • a machining process such as milling.
  • recesses can be introduced into the bit holder by means of a machining process. These recesses serve for later picking up the chisel. These may be continuous recesses or recesses with a blind hole.
  • the recesses for receiving the chisel can alternatively be achieved by molding in the mold.
  • the machining process steps are preferably carried out with a CNC machine tool.
  • CNC machine tools are suitable, in which a machining in several levels and multiple axes can be done so that the cast workpiece is only once to clamp in the CNC machine tool. All steps for reworking the surface of the casting workpiece as well as the introduction of all recesses in the bit holder can be carried out automatically by such a CNC machine tool.
  • the mold is preferably designed as a multipart permanent mold, so that a simple demolding of the cast workpiece can be done. Through the use of multi-part molds detailed shaped chisel holder can be realized.
  • the casting material used is preferably molten steel.
  • the method according to the invention is also suitable for other cast materials that meet the requirements with regard to the material of the cutting head.
  • Fig. 1 shows an exploded view of a mold 01 and a cast workpiece 02, which illustrates a step for removing the cast workpiece 02 according to the inventive method for producing a cutting head.
  • the mold 01 is designed in several parts and comprises a lower case 03, a top case 04 and two filling elements 06.
  • the lower case 03, the upper case 04 and the filling elements 06 are joined together so that they form the casting mold 01.
  • the cavity formed in the casting mold substantially corresponds to the shape of the cast workpiece 02 to be cast.
  • the cavity of the casting mold 01 is possibly slightly larger in size than the workpiece 02 to be produced, in order to enable a later surface treatment of the cast workpiece 02.
  • the mold does not fill all the later required cavities of a cutting head body to be produced, since these cavities are also created as part of a post-processing.
  • the assembled mold 01 After providing the assembled mold 01, it is filled with molten steel as a casting material. After cooling and solidification of the steel, the cast workpiece 02 is formed. Subsequently, the upper box 04 can be removed from the lower box 03 so that the cast workpiece 02 can be taken out of the lower box 03. Finally, the filling elements 06 are to be taken out of the cast workpiece 02, whereby the casting process is completed.
  • the casting process described can be performed with different materials or alloys that are selected according to the strength requirements of the cutting head to be produced.
  • a sintering process could also be selected to make the cutting head body.
  • metal injection process into consideration MIM - Metal Injection Molding
  • Such and comparable production methods should be covered within the meaning of the invention with the generic term of the casting used here.
  • the cast workpiece 02 after demolding is a cutting head body consisting of a cutting head core 07 with a plurality of chisel holders 08.
  • the cutting head core 07 and the chisel holder 08 are formed by the single cast workpiece 02 and represent a precursor of a cutting head according to the invention. If necessary, the cast workpiece a Hardening process be subjected.
  • Fig. 2 shows a sectional view of in Fig. 1 shown arrangement.
  • the cutting head core 07 with the chisel holders 08 and the corresponding cavities in the lower case 03 and in the upper case 04 of the casting mold 01 are shown.
  • the bit holder 08 are not arranged rotationally symmetrically on the outer shell of the hollow cylindrical cutting head core 07. Instead, the arrangement was chosen such that undercuts on Gusstechnik GmbH 02 are avoided and so the cast workpiece 02 can be produced at a reasonable cost in a casting process.
  • the bit holder 08 purposefully different shapes, unlike conventional snow heads, in which the bit holders are welded to the cutting head core.
  • the arrangement and shaping of the chisel holder 08 also facilitates removal of the cast workpiece 02.
  • Fig. 3 shows the cutting head body 02 in a perspective detail view.
  • the cutting head core 07 with the plurality of chisel holders 08 is illustrated on the lateral surface of the cutting head core 07.
  • the bit holder 08 have a different shape and an asymmetrical arrangement on the lateral surface. It can be seen that in this embodiment in the chisel holders 08 still no recesses for the attachment of the chisel are available. In modified embodiments, however, such recesses can be produced by appropriate shaping at least in their basic dimensions in the casting process. This reduces the expense of subsequent machining.
  • Fig. 4 shows the cutting head body 02 after being machined in a CNC machine tool.
  • Recesses 09 have been milled into the bit holder 08 and made clearances 10.
  • the recesses 09 are used later for picking chisels. Due to the clearances, the simple attachment of the chisel shafts, for example with retaining rings allows.
  • the recesses 09 may be incorporated as blind holes in the bit holders when internal securing possibilities for the bits are used.
  • the final chisel-occupied cutting head can be used in a tunneling machine or in a mining machine.

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)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Earth Drilling (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
EP09155812A 2008-04-09 2009-03-23 Corps de base à tête de découpage et tête de découpage pour une machine de creusement ou d'extraction Withdrawn EP2108783A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200810001089 DE102008001089B3 (de) 2008-04-09 2008-04-09 Schneidkopfgrundkörper sowie Schneidkopf für eine Vortriebs- oder Gewinnungsmaschine und Verfahren zu deren Herstellung

Publications (2)

Publication Number Publication Date
EP2108783A2 true EP2108783A2 (fr) 2009-10-14
EP2108783A3 EP2108783A3 (fr) 2013-03-13

Family

ID=40822371

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09155812A Withdrawn EP2108783A3 (fr) 2008-04-09 2009-03-23 Corps de base à tête de découpage et tête de découpage pour une machine de creusement ou d'extraction

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Country Link
EP (1) EP2108783A3 (fr)
DE (1) DE102008001089B3 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012200948A1 (de) * 2012-01-24 2013-07-25 Ksb Aktiengesellschaft Gehäuse für Fluide
CN106382117B (zh) * 2016-11-03 2018-11-02 太原理工大学 横轴式掘进机截齿及其截割头载荷模拟方法
CN110500093A (zh) * 2019-07-05 2019-11-26 傅明尧 一种自滤粉碎采矿设备

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2800302A (en) 1952-01-23 1957-07-23 Austin Powder Co Auger head
DE2448753C2 (de) 1974-10-12 1977-09-15 Gewerkschaft Eisenhütte Westfalia, 4670 Lunen Schneidkopf fur Vortriebs- und Gewinnungsmaschinen im Berg- und Tunnelbau
DE3326859C2 (de) 1983-01-04 1985-08-01 Krampe & Co Fertigung in Bergbaubedarf GmbH, Zweigniederlassung Pelkum, 4700 Hamm Mehrteilige Schrämwalze für eine Gewinnungsmaschine des Bergbaues, insbesondere für den untertägigen Steinkohlebergbau
DE3514446A1 (de) 1985-04-22 1986-10-23 Hans Krummenauer GmbH & Co KG, 6680 Neunkirchen Schneidkopf einer gewinnungsmaschine oder vortriebsmaschine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB906023A (en) * 1962-02-22 1962-09-19 Heeley Mining Machinery Compan Improvements in or relating to coal cutting machines
DE1939101A1 (de) * 1969-08-01 1971-02-04 Eickhoff Geb Schraemwalze mit schraubenlinienfoermig verlaufenden Ladestegen
GB1347504A (en) * 1970-09-18 1974-02-27 Anderson Mavor Ltd Cutting drums for mineral mining machines
CA1111455A (fr) * 1978-08-03 1981-10-27 Raymond Needham Materiel de mine
DE8507434U1 (de) * 1985-03-14 1985-05-09 Ruhrkohle Ag, 4300 Essen Schrämwalze

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2800302A (en) 1952-01-23 1957-07-23 Austin Powder Co Auger head
DE2448753C2 (de) 1974-10-12 1977-09-15 Gewerkschaft Eisenhütte Westfalia, 4670 Lunen Schneidkopf fur Vortriebs- und Gewinnungsmaschinen im Berg- und Tunnelbau
DE3326859C2 (de) 1983-01-04 1985-08-01 Krampe & Co Fertigung in Bergbaubedarf GmbH, Zweigniederlassung Pelkum, 4700 Hamm Mehrteilige Schrämwalze für eine Gewinnungsmaschine des Bergbaues, insbesondere für den untertägigen Steinkohlebergbau
DE3514446A1 (de) 1985-04-22 1986-10-23 Hans Krummenauer GmbH & Co KG, 6680 Neunkirchen Schneidkopf einer gewinnungsmaschine oder vortriebsmaschine

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Publication number Publication date
EP2108783A3 (fr) 2013-03-13
DE102008001089B3 (de) 2009-08-06

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