EP1033216A1 - Werkzeughalter für eine Frästrommel zur Erdbearbeitung - Google Patents

Werkzeughalter für eine Frästrommel zur Erdbearbeitung Download PDF

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Publication number
EP1033216A1
EP1033216A1 EP00103465A EP00103465A EP1033216A1 EP 1033216 A1 EP1033216 A1 EP 1033216A1 EP 00103465 A EP00103465 A EP 00103465A EP 00103465 A EP00103465 A EP 00103465A EP 1033216 A1 EP1033216 A1 EP 1033216A1
Authority
EP
European Patent Office
Prior art keywords
toolhead
longitudinal axis
ripper
cylindrical body
tapering cylindrical
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Withdrawn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
EP00103465A
Other languages
English (en)
French (fr)
Inventor
Romolo Bitelli
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.)
Caterpillar Prodotti Stradali SRL
Original Assignee
Bitelli SpA
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 Bitelli SpA filed Critical Bitelli SpA
Publication of EP1033216A1 publication Critical patent/EP1033216A1/de
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
    • E02F9/2866—Small metalwork for digging elements, e.g. teeth scraper bits for rotating digging elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/18—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by milling, e.g. channelling by means of milling tools
    • B28D1/186—Tools therefor, e.g. having exchangeable cutter bits
    • B28D1/188—Tools therefor, e.g. having exchangeable cutter bits with exchangeable cutter bits or cutter segments

Definitions

  • the invention concerns an improved type of toolhead suited to be applied to the working members of ripper drums belonging to vehicles for the removal of ground.
  • Each working member is made up of a ripper tool pressure mounted in a toolhead, where it is free to swivel around its axis but cannot separated from it by the blocking action generally exerted by interjected elastic parts.
  • the toolhead consists of a body preferably in steel primarily having a longitudinal construction, which is shaped to provide a seat that receives the shank of the ripper tool.
  • the toolhead is in turn is inserted by an extractable coupling in a hole made in a basically prismatic shaped base, which is fixed by an extractable coupling to a bed plate welded to the drum or it may otherwise be welded directly to the drum.
  • a high speed type of ripper drum T from known technology is illustrated in fig. 1 where it shows the toolhead, generally indicated by A, has a longitudinal axis a that is the same as the longitudinal axis of the tool U and creates an angle ⁇ of approximately 45° with line L of the ground S that is a tangent to circumference C traced by point P of the tool during rotation of the ripper drum T.
  • Clearance angles of 45° with the ground are not suitable for working on particularly hard ground because bending moments are generated on the working member that would damage the tool and its relevant toolhead and could sometimes even break them.
  • a high penetration type of ripper drum T' from known technology is illustrated in fig. 2 where it shows the toolhead, generally indicated by A', has a longitudinal axis a' that is the same as the longitudinal axis of the tool U' and creates an angle ⁇ ' of approximately 42° and 30' with line L' of the ground S', being a tangent to circumference C' traced by point P' of the tool during rotation of the ripper drum T.
  • the user must therefore be equipped with different types of ripper drums to fit the type of work that has to be carried out, with the inconvenience that, the changeover from one type of work to another implies additional direct or indirect costs related to changing the drums.
  • This invention intends to overcome the commonly accepted inconveniences expostulated above.
  • the scope of the invention is to produce an improved type of toolhead that, when applied to the same prismatic base of the working member, achieves angles of impact with different pitches between the ripper tool and the ground being removed.
  • the same prismatic base can hold different kinds of toolheads, each suited to create different angles of impact between ripper tool and the ground being removed.
  • a toolhead suited to be applied to the prismatic base of a working member for ripper drums of scarifier machines for the removal of ground that in accordance with the main claim comprises a tapering cylindrical body that couples into a corresponding tapering cylindrical hole of said prismatic base and has an end provided with a seat that holds the shank of a ripper toot and is characterised in that the longitudinal axis of said tapering cylindrical body is set at angle to the longitudinal axis of said seat.
  • the tapering cylindrical body of the toolhead has a through hole whose longitudinal axis is tilted and coplanar to the longitudinal axis of the seat made in the end of the actual toolhead that holds the shank of the ripper tool.
  • the seat consists of a cylindrical hole where its outer circumference around the entry section of the ripper tool's shank has its centre set along the longitudinal axis of the tapering cylindrical body.
  • Each toolhead also has an abutment that is set against corresponding markers on the prismatic base, suited to position the toolhead and thereby the ripper tool that it holds, according to different clearance angles with the ground.
  • An advantage in the use of the toolheads under this invention is that they allow the use of a sole ripper drum to remove different consistencies of ground, by simply varying the toolhead set-up in the seat of the same prismatic base or using the same prismatic base to mount toolheads having ripper tool seats with different pitches.
  • the toolheads invention belonging to a working member generally indicated by 2 that comprises a prismatic base 3 fixed to the ripper drum 4, provided with a tapering cylindrical hole 5 that holds by an extractable coupling the tapering cylindrical body of the toolhead 1.
  • a coupling 8 that receives the shank 9 of a ripper tool 10.
  • the longitudinal axis 11 of said tapering cylindrical body 6 is at an angle to the longitudinal axis 12 of said seat 8.
  • the seat 8 is a cylindrical hole 13 that holds the shank 9, also being cylindrical, of the ripper tool 10.
  • the tapering cylindrical body 6 of the toolhead 1 has a longitudinal through hole 14 to insert a pushrod, not illustrated, to extract the tool 10 in case of need.
  • the tapering cylindrical body 6 of the toolhead 1 has a radial collar 18 that acts as a bonding element with the end 7 and is provided with an abutment 19 that is set against a respective marker 20 fixed to the prismatic base 3 to prevent the toolhead from rotating during work.
  • the clearance ⁇ of the ripper tool 10 with the ground being removed S'' is the angle between horizontal line L'' of the ground S'' and the longitudinal axis 12 of the cylindrical hole 13 that holds the shank 9 of the ripper tool 10.
  • This angle ⁇ is less than the clearance angle a that can be seen in fig. 1 and is obtained by using already existing toolheads.
  • fig. 5 shows how the same toolhead 1 illustrated in fig. 3 can be mounted on the prismatic base 3 turning it by 180° with respect to the position in fig. 4, setting its abutment 19 against another abutment 20' fixed to the prismatic base 3 in the opposite position to the previous one.
  • the same toolhead 1 can be used to achieve a clearance angle ⁇ with the ground illustrated in fig. 5 that, as can be seen, is greater than angle ⁇ found in the configuration shown in fig. 1 that uses the known type of toolheads described earlier.
  • the working member may be produced with different shapes to those illustrated and described,but preferably it should have the same shapes and sizes as described in the aforementioned patent application numbered VI98U000097.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Road Repair (AREA)
  • Shovels (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Percussive Tools And Related Accessories (AREA)
EP00103465A 1999-03-03 2000-02-29 Werkzeughalter für eine Frästrommel zur Erdbearbeitung Withdrawn EP1033216A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITVI990042 1999-03-03
IT1999VI000042 IT1308135B1 (it) 1999-03-03 1999-03-03 Portautensile perfezionato per tamburi fresanti di macchine operatriciper la rimozione di suoli.

Publications (1)

Publication Number Publication Date
EP1033216A1 true EP1033216A1 (de) 2000-09-06

Family

ID=11426955

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00103465A Withdrawn EP1033216A1 (de) 1999-03-03 2000-02-29 Werkzeughalter für eine Frästrommel zur Erdbearbeitung

Country Status (3)

Country Link
EP (1) EP1033216A1 (de)
JP (1) JP2000282407A (de)
IT (1) IT1308135B1 (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6331035B1 (en) 1999-03-19 2001-12-18 Kennametal Pc Inc. Cutting tool holder assembly with press fit
US6786557B2 (en) 2000-12-20 2004-09-07 Kennametal Inc. Protective wear sleeve having tapered lock and retainer
US7192095B2 (en) * 2001-05-08 2007-03-20 Caterpillar Paving Products Inc Support base for toolholder of a milling drum
WO2008022389A1 (en) * 2006-08-25 2008-02-28 James A Calderwood An improved ripper boot including a high tensile tip
US7597402B2 (en) 2004-06-24 2009-10-06 Wirtgen Gmbh Tool holder
US8061783B2 (en) 2008-08-14 2011-11-22 Kennametal Inc. Bit holder block with non-rotating wear sleeve
WO2014086896A3 (de) * 2012-12-05 2014-07-31 Thyssenkrupp Industrial Solutions Ag Zahn für eine schaufel, insbesondere für einen schaufelradbagger
EP2963237A1 (de) * 2014-07-03 2016-01-06 Sandvik Intellectual Property AB Schneidmeißelhalterung mit verstellbarem Winkel
US20220364318A1 (en) * 2021-05-17 2022-11-17 Bomag Gmbh Quick-change holder, quick-change chisel holder system, milling roller for a road milling machine, and road milling machine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4337980A (en) * 1979-05-21 1982-07-06 The Cincinnati Mine Machinery Company Wedge arrangements and related means for mounting means, base members, and bits, and combinations thereof, for mining, road working, or earth moving machinery
DE3630443A1 (de) * 1986-09-06 1988-03-10 Worley & Partner Gmbh Vorrichtung zur schneidenden gewinnung/abtragung von materialien
US4915454A (en) * 1986-11-04 1990-04-10 Southern Philip W Mining bit and holder
ITVI950170A1 (it) 1995-10-31 1997-05-01 Bitelli Spa Elemento attivo atto ad essere applicato sui tamburi fresanti di macchine operatrice per la rimozione della superficie di suoli
EP0771911A1 (de) * 1995-10-31 1997-05-07 BITELLI S.p.A. Einsatz-Element zur Aufnahme wenigstens eines Fräswerkzeuges, das auf Frästrommeln von Arbeitsmaschinen zur Entfernung von Böden anzubringen ist
ITVI980097U1 (it) 1998-11-10 2000-05-10 Bitelli Spa Portautensile per tamburo fresante di macchine scarificatrici.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4337980A (en) * 1979-05-21 1982-07-06 The Cincinnati Mine Machinery Company Wedge arrangements and related means for mounting means, base members, and bits, and combinations thereof, for mining, road working, or earth moving machinery
DE3630443A1 (de) * 1986-09-06 1988-03-10 Worley & Partner Gmbh Vorrichtung zur schneidenden gewinnung/abtragung von materialien
US4915454A (en) * 1986-11-04 1990-04-10 Southern Philip W Mining bit and holder
ITVI950170A1 (it) 1995-10-31 1997-05-01 Bitelli Spa Elemento attivo atto ad essere applicato sui tamburi fresanti di macchine operatrice per la rimozione della superficie di suoli
EP0771911A1 (de) * 1995-10-31 1997-05-07 BITELLI S.p.A. Einsatz-Element zur Aufnahme wenigstens eines Fräswerkzeuges, das auf Frästrommeln von Arbeitsmaschinen zur Entfernung von Böden anzubringen ist
ITVI980097U1 (it) 1998-11-10 2000-05-10 Bitelli Spa Portautensile per tamburo fresante di macchine scarificatrici.

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6331035B1 (en) 1999-03-19 2001-12-18 Kennametal Pc Inc. Cutting tool holder assembly with press fit
US6786557B2 (en) 2000-12-20 2004-09-07 Kennametal Inc. Protective wear sleeve having tapered lock and retainer
US7192095B2 (en) * 2001-05-08 2007-03-20 Caterpillar Paving Products Inc Support base for toolholder of a milling drum
USRE45540E1 (en) 2004-06-24 2015-06-02 Wirtgen Gmbh Tool holder
US7597402B2 (en) 2004-06-24 2009-10-06 Wirtgen Gmbh Tool holder
WO2008022389A1 (en) * 2006-08-25 2008-02-28 James A Calderwood An improved ripper boot including a high tensile tip
US8061783B2 (en) 2008-08-14 2011-11-22 Kennametal Inc. Bit holder block with non-rotating wear sleeve
WO2014086896A3 (de) * 2012-12-05 2014-07-31 Thyssenkrupp Industrial Solutions Ag Zahn für eine schaufel, insbesondere für einen schaufelradbagger
EP2963237A1 (de) * 2014-07-03 2016-01-06 Sandvik Intellectual Property AB Schneidmeißelhalterung mit verstellbarem Winkel
US20220364318A1 (en) * 2021-05-17 2022-11-17 Bomag Gmbh Quick-change holder, quick-change chisel holder system, milling roller for a road milling machine, and road milling machine
DE102021112757A1 (de) 2021-05-17 2022-11-17 Bomag Gmbh WECHSELHALTER, MEIßELWECHSELHALTERSYSTEM, FRÄSWALZE FÜR EINE STRAßENFRÄSMASCHINE UND STRAßENFRÄSMASCHINE
CN115369727A (zh) * 2021-05-17 2022-11-22 宝马格有限公司 换刀座、换刀座系统、用于道路铣刨机的铣刨辊和道路铣刨机
EP4092192A1 (de) * 2021-05-17 2022-11-23 BOMAG GmbH Wechselhalter für ein meisselwechselhaltersystem zur befestigung eines fräsmeissels an einer fräswalze einer strassenfräsmaschine

Also Published As

Publication number Publication date
IT1308135B1 (it) 2001-11-29
ITVI990042A1 (it) 2000-09-03
JP2000282407A (ja) 2000-10-10

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