EP1907122B1 - Schleifvorrichtung für schutt - Google Patents

Schleifvorrichtung für schutt Download PDF

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Publication number
EP1907122B1
EP1907122B1 EP05778746A EP05778746A EP1907122B1 EP 1907122 B1 EP1907122 B1 EP 1907122B1 EP 05778746 A EP05778746 A EP 05778746A EP 05778746 A EP05778746 A EP 05778746A EP 1907122 B1 EP1907122 B1 EP 1907122B1
Authority
EP
European Patent Office
Prior art keywords
tooth
edge
disc
grinder
hole
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.)
Not-in-force
Application number
EP05778746A
Other languages
English (en)
French (fr)
Other versions
EP1907122A1 (de
Inventor
Bruno Venturi
Marco Venturi
Franco Ferraresi
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.)
Cams SRL
Original Assignee
Cams SRL
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 Cams SRL filed Critical Cams SRL
Publication of EP1907122A1 publication Critical patent/EP1907122A1/de
Application granted granted Critical
Publication of EP1907122B1 publication Critical patent/EP1907122B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/16—Details
    • B02C18/18—Knives; Mountings thereof
    • B02C18/182—Disc-shaped knives
    • B02C18/184—Disc-shaped knives with peripherally arranged demountable cutting tips or elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/14—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers

Definitions

  • This invention concerns a rubble grinder mainly suitable for grinding particularly resistant materials.
  • the invention concerns the special shape of each of the grinder tools which process the rubble.
  • the sector for grinding rubble such as, for example, the rubble originating from the demolition of buildings or from their destruction due to natural disasters.
  • Rubble of this type is generally the mixed type such as, for example, blocks of reinforced concrete and concrete in which steel rods are embedded.
  • a type of grinder for soft material waste is known in which the grinder has two parallel substantially cylindrical rotors turning in opposite directions.
  • the rotors are connected to crushing tools which are positioned around the circumference at regular intervals and housed in supports directly welded on the rotor.
  • the tools are interchangeable, being fixed to the support by means of a screw and locking nut.
  • the screw and nut clamp the tool to the support.
  • the known machines for processing rubble which is very hard material, generally consist of hammer mills or grinders comprising a pair of counterrotating rotors equipped with tools arranged radially and positioned along circumferences equidistant from the rotating cylinders.
  • the grinder tools are welded to the rotors so that their replacement, due to the wear to which they are subjected, involves the removal of the welding to free the tooth followed by new welding to fit the new tooth.
  • the aim of this invention is to overcome the limitations of the prior art described above.
  • the main aim of the invention is to produce a rubble grinder equipped with tools that are easily interchangeable without having to remove and redo the welding.
  • a further aim is to equip the grinder with tools that are able to withstand the heaviest stress due, for example, to the presence of steel rods embedded in the concrete.
  • Another aim of the invention is to facilitate the tool fitting and removal operations so that worn tools can be easily replaced also by not particularly expert personnel.
  • An additional aim of the invention is to facilitate the tool fitting and removal operations so that differently shaped tools for the various types of material to be processed can be fitted easily.
  • the joining means comprise a shank, protruding from the second part of the tooth, which is inserted in a slot made in the edge of the disc.
  • the second part of the tooth presents a curved recess in its lower edge, positioned in correspondence with a through hole made near the edge of the disc.
  • the through hole and the recess can thus accommodate another fixing pin.
  • this additional fixing pin provides excellent stability of the tooth with respect to the edge of the disc to which it is connected.
  • the joining means comprise a shank, protruding from the edge of the disc, which is inserted in a slot made in the second part of the tooth.
  • the tooth has a truncated cone cross-section so that it can be inserted as a wedge in a respective housing present in the edge of the disc.
  • this variation which is an alternative to the previously described embodiment, also ensures excellent stability of the tooth with respect to the edge of the disc to which it is connected, replacing the use of the additional fixing pin with the wedge joint.
  • the pins present in the above-mentioned embodiments being arranged transversally with respect to the midplane of each tooth, are protected against the blows made by the material on the tooth during processing operations both when the rotor rotates in the working direction and when it rotates in the opposite direction to unblock the jamming of the machine when it encounters material that cannot be crushed.
  • the rubble grinder according to the invention presents a container space 1, suitable to accommodate the material to be crushed, equipped with two rotor 3 and 4 , arranged paraller to each other, each being driven by a motor, respectively 31 and 41.
  • the rotors 3 and 4 turn in opposite directions in order to convey the material to be processed into the space between them which forms the crushing area.
  • the distance between the axes of the rotors can be adjustable through means of the known type in order to obtain different sizes of the pieces of crushed material according to requirements.
  • Each rotor 3 and 4 presents a series of discs 5, an example of which can be seen in fig. 2 , which are spaced out at regular intervals along the length of each rotor 3, 4.
  • the disc 5 presents a vaguely triangular shape formed by three curves which define three zones positioned at 120° to each other, each being connected to a tooth 7.
  • each tooth 7 presents a first part 71, which comes into contact with the material to be crushed, and a second part 72 connected to the edge 6 of the discs 5 by joining means 11.
  • the first part 71 of the tooth 7 presents an upper portion 75 which protrudes with respect to the rest of the body 76.
  • This upper portion 75 is the actual working area of the tooth 7 and also represents the part subject to wear.
  • this presents at least a first hole 721 the axis of which is perpendicular to the midplane of the tooth 7.
  • this first hole 721 accommodates a through fixing pin 8, as can be seen in fig. 4 , for a second hole 62 present near the edge of the disc 5.
  • the fixing pin 8 is therefore at right angles to the midplane of the tooth 7.
  • the joining means 11 comprise a shank 73, present on the second part 72 of the tooth 7, which is inserted in a slot 61 present in the edge 6 of the disc 5.
  • the thickness s of the shank 73 is less than the thickness S of the first part 71.
  • the shank 73 In addition to the first hole 721, the shank 73 also presents an arch-shaped recess 722 on the lower edge 723 of the shank 73.
  • This additional pin 9 is also at right angles to the midplane of the tooth 7.
  • the substantially parallelepiped shape of the shank 73 prevents the tooth 7 from slipping out of the slot 61 in the disc 5 even if it is subjected to recoil due to rejection of the material or to the inverted rotation of the rotor activated to unblock the material jamming the rotation of the rotors 3, 4.
  • this also comprises an overhang 731 suitable to be inserted in the slot 61.
  • This overhang 731 helps the positioning of the tooth 7 holding it in place during the lateral stress to which the tooth 7 is subjected.
  • the joining means 111 comprise a shank 161, protruding from the edge 106 of the disc 105, which is inserted in a slot 173 present in the second part 172 of the tooth 107.
  • the housing 112 of the tooth 107 cut in the edge 106 of the disc 105, presents a truncated cone profile matching that of the tooth 107 so that the tooth 107 is inserted like a wedge in the housing 112.
  • this embodiment also presents an upper portion 175 which protrudes with respect to the rest of the body 176.
  • This upper portion 175 is the actual working area of the tooth 107 and is also the part which becomes worn.
  • the shape of the tooth is such that any movement tending to shift the tooth from its housing during working operations is in fact prevented.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)

Claims (5)

  1. Mühle (10) für Schutt, umfassend:
    - einen Behälterraum (1) zur Aufnahme des zu zerkleinernden Materials, der innen mit
    - zumindest einem Rotor (3, 4) ausgestattet ist, der das zu bearbeitende Material zu einem Zerkleinerungsbereich bewegt und eine Vielzahl an Scheiben (5) aufweist, die entlang der Länge des Rotors (3, 4) verteilt sind, wobei der Rand (6) einer jeden Scheibe (5) eine Vielzahl an Zähnen (7) aufweist, die dazu geeignet sind, das Material zu zerkleinern,
    wobei jeder der Zähne (7) Folgendes aufweist:
    - einen ersten Teil (71), der mit dem zu zerkleinernden Material in Kontakt gerät, und
    - einen zweiten Teil (72), der zumindest ein erstes Loch (721) aufweist, dessen Achse im Wesentlichen senkrecht zur Mittelebene des Zahns (7) steht und das dazu geeignet ist, einen Befestigungszapfen (8) aufzunehmen, der durch ein entsprechendes zweites Loch (62) tritt, das in der Nähe des Rands (6) der Scheibe (5) vorhanden ist,
    dadurch gekennzeichnet, dass am unteren Rand (723) des zweiten Teils (72) des Zahns (7) zumindest eine bogenförmige Ausnehmung (722) in Übereinstimmung mit einem Durchgangsloch (63), das in der Nähe des Rands (6) der Scheibe (5) ausgebildet ist, angeordnet ist und dazu geeignet ist, einen zusätzlichen Befestigungszapfen (9) aufzunehmen, der durch das Loch (63) tritt, das in der Nähe des Rands (6) der Scheibe (5) ausgebildet ist,
    und dass der zweite Teil (72) des Zahns, der über Verbindungsmittel (11) mit dem Rand (6) der Scheiben (5) zusammenwirkt, Folgendes umfasst:
    - einen Schaft (73), der vom Zahn (7) vorsteht und dazu geeignet ist, in einen Schlitz (61) eingeführt zu werden, der in zumindest einem Abschnitt des Rands (6) der Scheibe (5) eingeschnitten ist, und
    - einen Überhang (731) am unteren Rand (723) des zweiten Teils (72) des Zahns (7), der dazu geeignet ist, in den Schlitz (61) des Rands (6) der Scheibe (5) eingeführt zu werden.
  2. Mühle (10) nach Anspruch 1), dadurch gekennzeichnet, dass sie zumindest zwei Rotoren (3, 4) aufweist, die parallel zueinander angeordnet sind und sich in entgegengesetzte Richtungen drehen, um das zu bearbeitende Material in den Raum zwischen den Rotoren (3, 4) zu bewegen, wobei dieser Raum den Zerkleinerungsbereich bildet.
  3. Mühle (10) nach Anspruch 1), dadurch gekennzeichnet, dass die Mittelebene des Zahns (7) parallel zur Mittelebene der Scheibe (5) ist.
  4. Mühle (10) nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass der erste Teil (71) des Zahns (7) einen oberen Abschnitt (71) aufweist, der in Bezug auf den verbleibenden Körper (76) vorsteht, gefolgt von einem nach unten hin abnehmenden Pyramidenprofil.
  5. Mühle (10) nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass jede der Scheiben (5) drei Zähne (7) aufnimmt, die in einem Abstand von 120° zueinander angeordnet sind.
EP05778746A 2005-07-19 2005-07-19 Schleifvorrichtung für schutt Not-in-force EP1907122B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2005/000411 WO2007010563A1 (en) 2005-07-19 2005-07-19 Rubble grinder

Publications (2)

Publication Number Publication Date
EP1907122A1 EP1907122A1 (de) 2008-04-09
EP1907122B1 true EP1907122B1 (de) 2009-09-09

Family

ID=35197748

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05778746A Not-in-force EP1907122B1 (de) 2005-07-19 2005-07-19 Schleifvorrichtung für schutt

Country Status (4)

Country Link
EP (1) EP1907122B1 (de)
AT (1) ATE442203T1 (de)
DE (1) DE602005016614D1 (de)
WO (1) WO2007010563A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009045308A1 (de) * 2009-10-02 2011-04-07 Josef Lechner Mühle zum Mahlen von Mahlgut
CN109158174A (zh) * 2018-07-17 2019-01-08 佛山市北科科技创新服务中心 一种玻璃生产用具有除铁功能的原料粉碎装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202010006078U1 (de) * 2010-04-25 2011-09-01 Doppstadt Familienholding Gmbh Kammzahnhalter
CN103406182B (zh) * 2013-08-28 2016-07-06 湖南万通科技股份有限公司 破碎齿总成及其齿座
CN103433092B (zh) * 2013-08-28 2015-08-19 湖南万通科技有限公司 给料破碎机、破碎齿辊及其破碎齿总成

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4946109A (en) * 1989-08-09 1990-08-07 Newman Machine Company, Inc. Tooth assembly for rotary grinding apparatus
DE9217598U1 (de) * 1992-12-23 1993-03-04 Unterwurzacher Patentverwertungsgesellschaft M.B.H., Kuchl, At
DE20116344U1 (de) * 2001-10-05 2001-12-20 Fae Italia S R L Fräszahn sowie Fräszahnhalter für eine Zerkleinerungsmaschine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009045308A1 (de) * 2009-10-02 2011-04-07 Josef Lechner Mühle zum Mahlen von Mahlgut
DE102009045308B4 (de) * 2009-10-02 2012-06-06 Josef Lechner Mühle zum Mahlen von Mahlgut
CN109158174A (zh) * 2018-07-17 2019-01-08 佛山市北科科技创新服务中心 一种玻璃生产用具有除铁功能的原料粉碎装置

Also Published As

Publication number Publication date
WO2007010563A1 (en) 2007-01-25
DE602005016614D1 (de) 2009-10-22
EP1907122A1 (de) 2008-04-09
ATE442203T1 (de) 2009-09-15

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