EP0195347A2 - Tête de coupe d'une machine d'abattage ou d'avancement - Google Patents

Tête de coupe d'une machine d'abattage ou d'avancement Download PDF

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Publication number
EP0195347A2
EP0195347A2 EP86103202A EP86103202A EP0195347A2 EP 0195347 A2 EP0195347 A2 EP 0195347A2 EP 86103202 A EP86103202 A EP 86103202A EP 86103202 A EP86103202 A EP 86103202A EP 0195347 A2 EP0195347 A2 EP 0195347A2
Authority
EP
European Patent Office
Prior art keywords
cutting head
webs
spaces
section
rounded
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
EP86103202A
Other languages
German (de)
English (en)
Other versions
EP0195347A3 (en
EP0195347B1 (fr
Inventor
Martin Eisenbeis
Walter Hemmer
Hans Dipl.-Kfm. Dipl.-Ing. Krummenauer
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.)
HANS KRUMMENAUER GmbH and Co KG
Original Assignee
HANS KRUMMENAUER GmbH and Co KG
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 HANS KRUMMENAUER GmbH and Co KG filed Critical HANS KRUMMENAUER GmbH and Co KG
Publication of EP0195347A2 publication Critical patent/EP0195347A2/fr
Publication of EP0195347A3 publication Critical patent/EP0195347A3/de
Application granted granted Critical
Publication of EP0195347B1 publication Critical patent/EP0195347B1/fr
Expired 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

Definitions

  • the invention relates to a cutting head of a mining machine or a tunneling machine of mining or civil engineering, which has on its periphery helically extending, studded bars, the spaces between which are used for material removal.
  • the known cutting heads carry the webs in welded construction on a cylindrical or frustoconical jacket.
  • the material broken off by the chisels collects in the gaps and is displaced in the axial direction by the web wall that moves in the direction of the material and slides along it, and is thus discharged.
  • the performance of the cutting head depends on this discharge rate.
  • the invention has for its object to increase the discharge rate.
  • the rounded cross section facilitates transverse movements of the material.
  • a chunk that is pressed against the vertical wall is stuck to it.
  • a chunk that is pressed against the wall that slowly rises with the curve can slide "up" on it.
  • This has an effect on the rounded bottom of the space across the entire width of the space, especially if the entire bottom of the space is rounded, preferably with a semi-elliptical to semi-circular cross-section, so that whole packets of the pile swivel to the side and upwards can.
  • the webs on their material-promoting side are inclined outside towards the space
  • the blade action of the webs on the lower half is increased by a slight adjustment, and the shortening of the blade depth is compensated for by the rounding according to the invention, if it should have an effect.
  • a particularly advantageous realization of this design consists in placing a bar which is inclined towards the gap next to the chisel holders on the webs.
  • the bar increases the bucket depth. It can be made of wear-resistant material and can easily be replaced after wear.
  • a roller body 1 consists of a truncated cone-shaped jacket 2 in the core and a strong disk 3 welded into it with stiffening by struts 50, with which the roller body sits in a known manner on a shaft end 4.
  • a ring 5 welded into the jacket 2 at the front end forms one Seat for a screwed-on so-called locking ring 6.
  • a screw 7 appears in the drawing, which is guided through two washers 8 and a sleeve 9 extending between them and held by a nut 10.
  • a locking screw 6 sits in the locking ring 6 Cover plate 11 and in this a more easily removable, smaller cover 12th
  • the jacket On the outside of the jacket two four - helically extending webs 13 are formed.They rise from all points of the truncated cone-shaped core to a common cylindrical envelope, i.e. they become larger from the front to the rear end. Accordingly, the spaces 1 4 between the webs 13 deeper from the front to the rear end.
  • the dash-dotted line 15 indicates the smallest and the intersection-dotted line 16 an average depth of the intermediate spaces 14 ; the greatest depth will soon be reached at the point of the cut
  • the cross section of the spaces 14 is rounded.
  • Line 15 is approximately a - (flat) ellipse half. It is then bulged up to the half of the circle which is reached on line 16. From then on, the half of the circle is shifted downward, so that the webs are given vertical wall sections 17.
  • water guide tubes 18 are embedded in the webs and covered by a cover strip 19, on which chisel holders 20 with chisels 21 are attached.
  • the arrangement of the chisels offset in a row one behind the other can be seen in FIG. 2.
  • a strip 23 is attached to the webs 13 by a weld 22.
  • the strip 23 runs next to the chisel holders 20 at the edge of the web and, as can be seen in the line 24, is slightly inclined over the web wall with a slight curvature.
  • the water guide tubes 18 feed spray nozzles arranged on each bit holder. As shown in FIG. 1, they are each connected via a connecting pipe 25 and an angled bore 26 in the disk 3 to a pressure hose, not shown, connected at 27, which is acted upon by the shaft end 4.
  • the end ring 6 has a water supply system with a connection piece 28 for a pressure hose and two connecting bores 29 and 30 to form an annular channel 31 which is closed by a rear cover 32 and feeds nozzles for chisels which are arranged on the periphery of the end ring and are directed obliquely forward.
  • the jacket 2 with the webs 13 is a cast body. It is bordered by wear plates 40 and 41 at the axial ends of the webs.
  • Line 33 represents the envelope surface over all chisel tips.
  • the cutting roller described is used in a known manner, i.e. she cuts a slit in the coal pile.
  • the material broken out by the chisels 21 is received in the spaces 14. Due to the inclined inclination of the webs 13, it is conveyed out of the coal pile, partly as a result of gravity and rutching due to gravity, but mainly due to the screwing movement of the webs.

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)
  • Road Repair (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Earth Drilling (AREA)
  • Manufacturing And Processing Devices For Dough (AREA)
EP86103202A 1985-03-13 1986-03-10 Tête de coupe d'une machine d'abattage ou d'avancement Expired EP0195347B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853508881 DE3508881A1 (de) 1985-03-13 1985-03-13 Schneidkopf einer gewinnungsmaschine oder vortriebsmaschine
DE3508881 1985-03-13

Publications (3)

Publication Number Publication Date
EP0195347A2 true EP0195347A2 (fr) 1986-09-24
EP0195347A3 EP0195347A3 (en) 1987-02-25
EP0195347B1 EP0195347B1 (fr) 1989-05-24

Family

ID=6265010

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86103202A Expired EP0195347B1 (fr) 1985-03-13 1986-03-10 Tête de coupe d'une machine d'abattage ou d'avancement

Country Status (3)

Country Link
US (1) US4693517A (fr)
EP (1) EP0195347B1 (fr)
DE (2) DE3508881A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017104651A1 (de) 2017-03-06 2018-09-06 POWER-TECHNOLOGIE GmbH Fräswalze und Verfahren zum Fräsen

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5842747A (en) * 1997-02-24 1998-12-01 Keystone Engineering & Manufacturing Corporation Apparatus for roadway surface reclaiming drum

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1488766A (en) * 1921-05-02 1924-04-01 Quist John Coal-mining machine
US1586151A (en) * 1922-05-08 1926-05-25 Daniel Boone Mining Machine Co Bit or cutting tool
GB745680A (en) * 1952-12-05 1956-02-29 Charles Edward Compton Improvements in or relating to mining machine heads
GB2027773A (en) * 1978-08-03 1980-02-27 Minsup Mining Supplies Mineral-mining Cutter Drum
DE2853249C2 (de) * 1978-12-09 1983-04-14 Krampe & Co Fertigung in Bergbaubedarf GmbH, Zweigniederlassung Pelkum, 4700 Hamm Schrämwalze für eine Gewinnungsmaschine des Kohlebergbaues
DE2936184C2 (de) * 1979-09-07 1982-12-23 Krampe & Co Fertigung in Bergbaubedarf GmbH, Zweigniederlassung Pelkum, 4700 Hamm Schrämwalze

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017104651A1 (de) 2017-03-06 2018-09-06 POWER-TECHNOLOGIE GmbH Fräswalze und Verfahren zum Fräsen

Also Published As

Publication number Publication date
EP0195347A3 (en) 1987-02-25
DE3663555D1 (en) 1989-06-29
EP0195347B1 (fr) 1989-05-24
DE3508881A1 (de) 1986-09-18
US4693517A (en) 1987-09-15

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