ATE109247T1 - FIXING A CUTTING BIT IN ITS HOLDER. - Google Patents

FIXING A CUTTING BIT IN ITS HOLDER.

Info

Publication number
ATE109247T1
ATE109247T1 AT92110868T AT92110868T ATE109247T1 AT E109247 T1 ATE109247 T1 AT E109247T1 AT 92110868 T AT92110868 T AT 92110868T AT 92110868 T AT92110868 T AT 92110868T AT E109247 T1 ATE109247 T1 AT E109247T1
Authority
AT
Austria
Prior art keywords
pick
shearing
holder
pocket
fixing
Prior art date
Application number
AT92110868T
Other languages
German (de)
Inventor
Ernst Heiderich
Rudolf Dichtl
Original Assignee
Boart Hwf Gmbh 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 Boart Hwf Gmbh Co Kg filed Critical Boart Hwf Gmbh Co Kg
Application granted granted Critical
Publication of ATE109247T1 publication Critical patent/ATE109247T1/en

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
    • E21C35/18—Mining picks; Holders therefor
    • E21C35/19—Means for fixing picks or holders
    • 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
    • E21C35/186—Mining picks; Holders therefor using a locking piston actuated hydraulically, e.g. by spraying-fluid pressure
    • 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
    • E21C35/188—Mining picks; Holders therefor characterised by adaptations to use an extraction tool

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)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Auxiliary Devices For Machine Tools (AREA)

Abstract

During the fixing of a shearing pick (16) in its holder, the shearing pick (16) having a pick shank (15) and the holder having a pick pocket (8) which accommodates the pick shank (15) and is fixed to the work head (2) of a winning machine, with at least one holding element which holds the shearing pick (16) in the pick pocket (8), each holding element being designed as at least one working piston (13) which is arranged in the pick pocket (8), can be actuated by pressure and exerts on the shearing pick (16) a clamping force directed perpendicularly to its longitudinal axis (16c), short replacement times are made possible in a simple shape of the shearing pick (16) without a great deal of design effort and at the same time the reliable retention of the shearing pick (16) in the holder for the entire duration of its use is ensured by each working piston (13) being acted upon by pressure via a pressurised supply line (3) for spray liquid supplying at least one spray nozzle. <IMAGE>
AT92110868T 1991-06-29 1992-06-26 FIXING A CUTTING BIT IN ITS HOLDER. ATE109247T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4121674A DE4121674C1 (en) 1991-06-29 1991-06-29

Publications (1)

Publication Number Publication Date
ATE109247T1 true ATE109247T1 (en) 1994-08-15

Family

ID=6435126

Family Applications (1)

Application Number Title Priority Date Filing Date
AT92110868T ATE109247T1 (en) 1991-06-29 1992-06-26 FIXING A CUTTING BIT IN ITS HOLDER.

Country Status (4)

Country Link
EP (1) EP0521413B1 (en)
AT (1) ATE109247T1 (en)
DE (2) DE4121674C1 (en)
PL (1) PL295048A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9704554D0 (en) * 1997-03-05 1997-04-23 Bingham Engineering Ltd Semi-locking pick box assembly
US6176552B1 (en) 1998-10-05 2001-01-23 Kennametal Inc. Cutting bit support member with undercut flange for removal
US6331035B1 (en) 1999-03-19 2001-12-18 Kennametal Pc Inc. Cutting tool holder assembly with press fit
US8628148B2 (en) * 2010-12-17 2014-01-14 Esco Windber Inc. Holder block assembly for a cutting tool having a hydraulic piston and method

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2965365A (en) * 1958-04-14 1960-12-20 Cincinnati Mine Machinery Co Bit and resilient holding means therefor
GB956513A (en) * 1962-02-24 1964-04-29 Macdonald & Company Haydock Lt Hydraulic pick or tool holder
GB1550353A (en) * 1976-05-17 1979-08-15 Wickman Wimet Ltd Mineral cutting picks and boxes
DE3935691A1 (en) * 1989-10-26 1991-05-02 Gewerk Eisenhuette Westfalia CHISEL ARRANGEMENT FOR MINING MINING MACHINES AND THE LIKE, IN PARTICULAR FOR PLANER

Also Published As

Publication number Publication date
EP0521413B1 (en) 1994-07-27
DE4121674C1 (en) 1993-02-11
PL295048A1 (en) 1993-03-08
DE59200320D1 (en) 1994-09-01
EP0521413A1 (en) 1993-01-07

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Legal Events

Date Code Title Description
REN Ceased due to non-payment of the annual fee