DE2932511A1 - Mine cutting roller chisel cutters spray feed - involves peripheral grooves linked to axial feed duct through shaft - Google Patents

Mine cutting roller chisel cutters spray feed - involves peripheral grooves linked to axial feed duct through shaft

Info

Publication number
DE2932511A1
DE2932511A1 DE19792932511 DE2932511A DE2932511A1 DE 2932511 A1 DE2932511 A1 DE 2932511A1 DE 19792932511 DE19792932511 DE 19792932511 DE 2932511 A DE2932511 A DE 2932511A DE 2932511 A1 DE2932511 A1 DE 2932511A1
Authority
DE
Germany
Prior art keywords
recess
shaft
chisel
cutters
peripheral grooves
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Withdrawn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
DE19792932511
Other languages
German (de)
Inventor
Helmut Ing Grad Brandenburg
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.)
Gebr Eickhoff Maschinenfabrik u Eisengiesserei GmbH
Original Assignee
Gebr Eickhoff Maschinenfabrik u Eisengiesserei 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 Gebr Eickhoff Maschinenfabrik u Eisengiesserei GmbH filed Critical Gebr Eickhoff Maschinenfabrik u Eisengiesserei GmbH
Priority to DE19792932511 priority Critical patent/DE2932511A1/en
Publication of DE2932511A1 publication Critical patent/DE2932511A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21CMINING OR QUARRYING
    • E21C35/00Details 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
    • E21C35/18Mining picks; Holders therefor
    • E21C35/187Mining picks; Holders therefor with arrangement of fluid-spraying nozzles

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)
  • Earth Drilling (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

A shaft has a set of cutters fixed in a recess, and an axial through-channel for supply of spraying fluid, in a chisel, esp. for a cutter roller (in mining or rock-cutting). The channel (4) opens out into the cutter-holding recess (2). The set of cutters (3) and/ir shaft (1a) have a series of peripheral grooves (5). These extend over full recess height, and are linked to the channel at the bottom of the recess, and emerge from the recess at the opposite end. Fluid is efficiently conveyed to the set of cutters, forming a fully enclosing sheath, for cutter cooling, dust moistening and spark quenching.

Description

Die Erfindung betrifft einen Meißel, insbesondere fürThe invention relates to a chisel, in particular for

Schrämwalzen, der mit einem in einer Ausnehmung des Meißelschaftes befestigten Schneideneinsatz sowie Mit einem durch den Meißelschaft verlaufenden axialen Kanal für die Zufuhr der Berieselungsflüssigkeit versehen ist.Curing rollers with one in a recess in the chisel shaft attached cutting insert as well as with one running through the chisel shank axial channel is provided for the supply of the irrigation liquid.

Es gehören Meißel für im Gestein schlagend arbeitende Werkzeuge zum vorbekannten Stand der Technik, die mit einer Dusenvorrichtung versehen sind, aus der in Bereich der Meißel schneide zwei aus Hochdruckflü6sigkeit bestehende Flüssigkeitsstrahlen mit hoher Geschwindigkeit austreten. Ein durch den Meißelschaft verlaufender axialer Kanal dient der Flüssigkeitszufuhr zu den im Bereich der Meißel schneide in einer Ausnehmung befindlichen Düsen (DE-GM 78 07 481).There are chisels for tools that work in the rock known prior art, which are provided with a nozzle device from the one in the area of the chisel cut two jets of high pressure fluid exit at high speed. An axial one running through the chisel shank The channel is used to supply liquid to the cutting edge in the area of the chisel Nozzles located in the recess (DE-GM 78 07 481).

Auch ist bereits vorgeschlagen worden, ein Werkzeug zum Abtragen von Gestein und Mineralien mit einem stAhlernen Schaft auszustatten, dessen Querschnitt sich zur Spitze hin verjüngt und der einen axialen Spülaittelkanal aufweist. Die sich verjüngende Werkzeugspitze besteht aus einem in den Schaft eingelöteten, eingeschrumpften oder eingepreßten Hartinetallstift, der in eine Schaftausnehnung eingreift und eine sich an den Spülmittelkanal des Schaftes anschließende axiale Bohrung besitzt, die im Längsschnitt die Form einer Düse hat (deutsche Patentanmeldung P 28 17 796.0).It has also already been proposed a tool for removing To equip rocks and minerals with a steel shaft, the cross-section of which tapers towards the tip and which has an axial flushing agent channel. the The tapered tool tip consists of one that is soldered and shrunk into the shaft or pressed hard metal pin which engages in a shaft recess and a has an axial bore adjoining the flushing agent channel of the shaft, which has the shape of a nozzle in longitudinal section (German patent application P 28 17 796.0).

Aufgabe der Erfindung ist es, einen Meißel, insbesondere für Schrãxwalzen, zu schaffen, der sich durch eine besonders zweckmäßige Art der Fltkssigkeitszufuhr zu dem Schneideneinsatz auszeichnet.The object of the invention is to provide a chisel, in particular for scraping rollers, to create, which is characterized by a particularly expedient type of liquid supply to the cutting edge insert.

Dazu geht die Erfindung von dem eingangs beschriebenen Meißel aus und schlägt vor: a) den axial durch den Meißtlschaft verlaufenden Kanal in die den Schneideneinsatz aufnehmende Ausnehmung des Meißelschaftes einmünden zu lassen; b) den Schneideneinsatz und/oder die Ausnehmung des Xeißelschaftes mit mehreren über ihre Umfangsfläche verteilten Nuten zu versehen, die sich über die ganze Ausnehmungshöhe erstrekken und am Boden der Ausnehmung mit dem axialen Flüssigkeitskanal in Verbindung stehen sowie am entgegengesetzten Ende aus der Ausnehmung austreten.For this purpose, the invention is based on the chisel described at the outset and proposes: a) the channel running axially through the bit shank into the To let the cutting insert open into the recess of the chisel shaft; b) the cutting insert and / or the recess of the chisel shank with several to provide grooves distributed over its circumferential surface, which extend over the entire recess height extend and communicate at the bottom of the recess with the axial fluid channel stand and emerge from the recess at the opposite end.

Die am Ende des Meißelschaftes, aber noch unterhalb der Schneide des Schneideneinsatzes ins Freie austretende Berieselungsflüssiekeit umgibt infolgedessen den aus den Meißelschaft vorstehenden Teil des Schneideneinsatzes auf seinem ganzen Umfang. Folglich bildet die Berieselungsflüssigkeit einen Flüssigkeitsmantel, der den Schneideneinsatz nach außen völlig abschließt, die Werkzeugschneide VUhlt, den in ihrem Bereich entstehenden Feinstaub intensiv benetzt und bindet sowie entstehende Funken sofort löscht.The one at the end of the chisel shaft, but still below the cutting edge of the As a result, irrigation fluid escaping into the open surrounds the cutting insert the part of the cutting insert protruding from the chisel shank all over Scope. As a result, the sprinkling liquid forms a liquid jacket that completely closes off the cutting edge insert from the outside, the tool cutting edge VUHL, the The fine dust that arises in their area intensively wets and binds as well as those that arise Instantly extinguishes sparks.

Ein Ausführungsbeispiel der Erfindung ist in einer Abbildung dargestellt.An embodiment of the invention is shown in a figure.

Mit 1 ist der Meißel bezeichnet. Er besteht aus einen zylindrischen Teil 1b und einem sich zur Spitze hin verjüngenden,. rotationssymmetrischen Teil 1a. Im oberen Teil la des Meißels 1 ist in axialer Richtung, innerhalb einer Ausnehmung 2, ein kreisrunder, Mit einer kegelförmigen Spitze versehener Hartmetallstift 3 unlösbar befestigt. Die Spitze des Hartaetallstiftes 3 ragt aus dem Meißel 1 heraus. Der MeiBel 1 ist mit einer axialen Bohrung 4 versehen, die in die den Hartmetallstift 3 aufnehmende Ausnehmung 2 des Meißeln 1 einmündet. Über den Umfang der Ausnehmung 2 sind gleichmäßig vier Nuten 5 verteilt, die sich über die ganze Ausnehnungshöhe erstrecken, am Boden 6 der Ausnehmung 2 mit der axialen Bohrung 4 in Verbindung stehen und am entgegengesetzten Ende aus der Ausnehmung 2 austreten.With 1 the chisel is referred to. It consists of a cylindrical Part 1b and a tapering towards the tip. rotationally symmetrical part 1a. In the upper part la of the chisel 1 is in the axial direction, within a recess 2, a circular hard metal pin with a conical tip 3 inextricably attached. The tip of the hard metal pin 3 protrudes from the chisel 1. The bit 1 is provided with an axial bore 4, which is inserted into the hard metal pin 3 receiving recess 2 of the chisels 1 opens. About the scope of the recess 2, four grooves 5 are evenly distributed over the entire height of the expansion extend, at the bottom 6 of the recess 2 with the axial bore 4 in connection stand and emerge from the recess 2 at the opposite end.

Claims (1)

Meißel, insbesondere für Schrämwalzen Patentanspruch Meißel, insbesondere für Schrämwalzen, der mit einem in einer Ausnehmung des Meißelschaftes befestigten Schneideneinsatz sowie mit einem durch den Meißelschaft verlaufenden axialen Kanal für die Zufuhr der Berieselungsflüssigkeit versehen ist, gekennzeichnet durch folgende Merkmale: a) der axiale Kanal (4) mündet in die den Schneideneinsatz (3) aufnehmende Ausnehmung (2) des Meißelschaftes (la) ein; b) der Schneideneinsatz (3) und/oder die Ausnehmung (2) des Meißelschaftes (la) sind mit mehreren über ihre Umfangsfläche verteilten Nuten (5) versehen, die sich über die ganze Ausnehmungshöhe ers-trecken und am Boden (ó) der Ausnehmung (2) mit dem axialen Kanal (4) in Verbindung stehen sowie am entgegengesetzten Ende aus der Ausnehmung (2) austreten. Chisels, in particular for cutting rollers. Patent claim Chisels, in particular for cutting rollers, which is fastened to a recess in the chisel shaft Cutting edge insert as well as with an axial channel running through the chisel shank is provided for the supply of the sprinkling liquid, characterized by the following Features: a) the axial channel (4) opens into the one that receives the cutting insert (3) Recess (2) of the chisel shaft (la); b) the cutting insert (3) and / or the recess (2) of the chisel shank (la) are several over their circumferential surface distributed grooves (5) which extend over the entire height of the recess and are in communication with the axial channel (4) at the bottom (ó) of the recess (2) and emerge from the recess (2) at the opposite end.
DE19792932511 1979-08-10 1979-08-10 Mine cutting roller chisel cutters spray feed - involves peripheral grooves linked to axial feed duct through shaft Withdrawn DE2932511A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19792932511 DE2932511A1 (en) 1979-08-10 1979-08-10 Mine cutting roller chisel cutters spray feed - involves peripheral grooves linked to axial feed duct through shaft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792932511 DE2932511A1 (en) 1979-08-10 1979-08-10 Mine cutting roller chisel cutters spray feed - involves peripheral grooves linked to axial feed duct through shaft

Publications (1)

Publication Number Publication Date
DE2932511A1 true DE2932511A1 (en) 1981-02-26

Family

ID=6078177

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19792932511 Withdrawn DE2932511A1 (en) 1979-08-10 1979-08-10 Mine cutting roller chisel cutters spray feed - involves peripheral grooves linked to axial feed duct through shaft

Country Status (1)

Country Link
DE (1) DE2932511A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0111143A2 (en) * 1982-11-13 1984-06-20 VOEST-ALPINE Aktiengesellschaft Core bit with damped guided cylindrical shank
EP0151230A1 (en) * 1984-02-01 1985-08-14 BELZER-DOWIDAT GMBH Werkzeug-Union Mining tool
US4583786A (en) * 1983-03-02 1986-04-22 Padley & Venables Limited Mineral mining pick and holder assembly
US4765686A (en) * 1987-10-01 1988-08-23 Gte Valenite Corporation Rotatable cutting bit for a mining machine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0111143A2 (en) * 1982-11-13 1984-06-20 VOEST-ALPINE Aktiengesellschaft Core bit with damped guided cylindrical shank
EP0111143A3 (en) * 1982-11-13 1985-11-21 Voest-Alpine Aktiengesellschaft Core bit with damped guided cylindrical shank
US4583786A (en) * 1983-03-02 1986-04-22 Padley & Venables Limited Mineral mining pick and holder assembly
EP0151230A1 (en) * 1984-02-01 1985-08-14 BELZER-DOWIDAT GMBH Werkzeug-Union Mining tool
US4765686A (en) * 1987-10-01 1988-08-23 Gte Valenite Corporation Rotatable cutting bit for a mining machine

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