EP0666111A1 - Rotor für Hammerbrecher - Google Patents

Rotor für Hammerbrecher Download PDF

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Publication number
EP0666111A1
EP0666111A1 EP95100660A EP95100660A EP0666111A1 EP 0666111 A1 EP0666111 A1 EP 0666111A1 EP 95100660 A EP95100660 A EP 95100660A EP 95100660 A EP95100660 A EP 95100660A EP 0666111 A1 EP0666111 A1 EP 0666111A1
Authority
EP
European Patent Office
Prior art keywords
beaters
beater
discs
rotor
housings
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Withdrawn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
EP95100660A
Other languages
English (en)
French (fr)
Inventor
Jean-Claude Smitz
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.)
Magotteaux International SA
Original Assignee
Magotteaux International SA
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 Magotteaux International SA filed Critical Magotteaux International SA
Publication of EP0666111A1 publication Critical patent/EP0666111A1/de
Withdrawn legal-status Critical Current

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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
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/26—Details
    • B02C13/28—Shape or construction of beater elements
    • B02C13/2804—Shape or construction of beater elements the beater elements being rigidly connected to the rotor

Definitions

  • the present invention relates to a rotor for an impact crusher comprising a series of discs fixed on an axis of rotation, a series of symmetrical longitudinal beaters, radially projecting from the discs and arranged in open peripheral housings of the discs and a system for holding the beaters in their homes.
  • This kind of crusher is commonly used, for example, for crushing rocks.
  • the material to be crushed is poured onto the rotor which is driven around its axis of rotation and the crushing of the material occurs, either under the impact of the beaters, or when the material smashes against screens on which it is projected by the rotor. Due to the intensity of the impact on the beaters, they are exposed to rapid wear and must be replaced relatively often. To halve the frequency of replacement of the beaters, it is known to use symmetrical beaters which can be turned over when their leading face is worn.
  • Document AT-B-351 906 proposes a rotor with symmetrical beaters which can be turned over when one of their attack faces is worn.
  • the beaters have on their front and rear flanks two symmetrical grooves with rounded section and are held in place on the rear flank by a round rod and, on the front flank, by wedges fixed by wedge effect on pointed noses forming the edge. exterior of housing.
  • These beaters are not rigidly fixed and can oscillate around their rod and holding blocks to lock in a determined position under the effect of centrifugal force. Since there is no rigid attachment the beaters must be made of a material relatively ductile such as steel or manganese, this however at the expense of wear resistance.
  • Document DE-A-21 47 920 describes a rotor with beaters which are held in place by removable wedges which allow radial disengagement of the beaters.
  • these beaters have the drawback of not being symmetrical, and therefore of not being able to be turned over when their leading face is worn.
  • there is also no rigid fixing of the beaters therefore no possibility of using materials with properties of optimal resistance to wear.
  • the object of the present invention is to provide a new rotor for a crusher with an improved fixing system for the beaters which facilitates the replacement and turning of the beaters and which allows the use of very hard alloys for producing the beaters.
  • the rotor proposed by the present invention is characterized by a system for locking and rigid fixing of the beaters constituted by the combination of a locking system with progressive tightening on the side of the rear face of the beaters and, on the side from the front face of the beaters, axially removable shims each carried by a protruding nose from the outer edge of the housing.
  • each wedge is released from its nose by axial sliding and radial extraction between two discs. Once all the shims in the same row are thus removed, the beater can be released radially from its housing. This possibility of disassembly significantly reduces maintenance time.
  • Each beater has on its front face and on its rear face longitudinal throttles of profiled section respectively intimately married by the rear face of each wedge and urged radially and tangentially by the locking system to ensure rigid fixing of the beaters in their housings.
  • This rigid attachment makes it possible to use very hard beaters, for example made of chrome cast iron with a hardness greater than 63 Rc and thus significantly improve the wear resistance.
  • the rotor shown in the Figures consists essentially of a series of discs 10 which are fixed on a horizontal central axis not shown which, in operation, is actuated to rotate the discs 10 in the counterclockwise direction, seen in the Figures.
  • Each of the discs 10 comprises, at its periphery, a series, in the example shown, four recesses or housings 12 aligned longitudinally with one another. In each row of housings 12 is disposed a beater 14 intended to strike the material to be crushed during the rotation of the rotor.
  • each beater 14 has a symmetrical shape with respect to a radial plane of the rotor, with two symmetrical attack faces 16 and 18, which allows the beater 14, in the event of wear of the face 16, to be turned over to work with the face 18.
  • Each beater 14 also has, in the middle region, two symmetrical profiled throttles 20 and 22 serving to fix and wedge the beater in their housings 12.
  • This fixing is provided by a locking system 24 located on the rear face of the beaters 14, seen in the direction of rotation.
  • This system comprises a fixing rail 26 which is welded to each of the discs 10 through the housings 12.
  • This rail 26 has a series of cylindrical cells 28 (see Figure 3) open towards the outside and extending in the mass of the rail by a female thread 30.
  • the rail 26 also has, over its entire length, on the beater side 14, a seat 32 which extends to the cells 28 and opens the latter on the beater side 14.
  • This seat 32 serves housing a key 34 as shown in Figures 1 and 2, while each cell is intended to receive a thick cylindrical washer 36 ( Figures 1 and 4).
  • Each washer 36 has a bevel cut 38 ( Figure 4) making an angle of about 15 ° with the generator.
  • Each housing 12 has, on the side of the front face of a beater 14, a projecting nose 40 directed towards the fixing system 24.
  • Each nose 40 is capped with a removable wedge 42 having generally a section in the shape of "C" the inner face of which matches the shape of the nose 40 and the outer face of which has a contoured contour which matches the constriction 20 of the front face of the beater 14.
  • Each beater 14 is thus securely anchored between the wedges 42 and the locking system 24 , both radially and tangentially.
  • the oblique front edge of the key 34 engages the upper edge of the throttle 22 of the beater.
  • the thrust in the tangential direction ensures a tightening between the shims 42 and the beater as well as a very precise positioning of the beater 14 thanks to the complementary contoured contours of the throttle 20 and the shim 42.
  • the key 42 also ensures, during the tightening of the washers 36 a radial thrust on the beaters 14 to wedge them by the inner edge of the throttle 22 against the inner edge of the fixing rail 26.
  • the beaters 14 are thus positioned correctly and rigidly fixed between the system lock 24 and shims 42.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)
EP95100660A 1994-02-04 1995-01-19 Rotor für Hammerbrecher Withdrawn EP0666111A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE9400139 1994-02-04
BE9400139A BE1008041A3 (fr) 1994-02-04 1994-02-04 Rotor pour concasseur a percussion.

Publications (1)

Publication Number Publication Date
EP0666111A1 true EP0666111A1 (de) 1995-08-09

Family

ID=3887950

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95100660A Withdrawn EP0666111A1 (de) 1994-02-04 1995-01-19 Rotor für Hammerbrecher

Country Status (3)

Country Link
EP (1) EP0666111A1 (de)
JP (1) JPH0833849A (de)
BE (1) BE1008041A3 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0787529A1 (de) * 1996-02-02 1997-08-06 Magotteaux International S.A. Rotor für Prallbrecher
EP0945181A1 (de) 1998-03-26 1999-09-29 NOELL Service und Maschinentechnik GmbH Schlagleiste für Prallmühlenrotoren
EP0945182A1 (de) * 1998-03-26 1999-09-29 NOELL Service und Maschinentechnik GmbH Rotor für Prallmühlen
GB2461810A (en) * 2008-07-16 2010-01-20 Pulver Bvba Crusher device with removable crusher points
CN102151592A (zh) * 2011-01-11 2011-08-17 韶关市韶瑞重工有限公司 高效反击式制砂机
CN105597874A (zh) * 2016-03-16 2016-05-25 四川江油新川矿山机械有限公司 一种用于制砂的双腔破碎机
CN111420576A (zh) * 2020-05-08 2020-07-17 重庆矿迪冶金设备有限责任公司 立式强力混合机的易拆装转子结构及其拆卸和更换方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114441260A (zh) 2017-11-27 2022-05-06 徕卡生物系统成像股份有限公司 载片架确定系统

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2147920A1 (de) * 1971-09-25 1973-03-29 Hazemag Hartzerkleinerung Schutzvorrichtung fuer prallmuehlenrotoren
FR2340771A1 (fr) * 1976-02-14 1977-09-09 Hazemag Andreas Kg Barreau de percussion pour rotors de broyeurs a impact
AT351906B (de) * 1978-05-02 1979-08-27 Voest Ag Schlagleistenhalterung fuer den rotor einer prallmuehle
US4180213A (en) * 1978-04-12 1979-12-25 Matsuzaka Company Ltd. Rotor of a coarse-reduction impact crusher
FR2440779A2 (fr) * 1978-11-10 1980-06-06 Fives Cail Babcock Concasseur a percussion

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2147920A1 (de) * 1971-09-25 1973-03-29 Hazemag Hartzerkleinerung Schutzvorrichtung fuer prallmuehlenrotoren
FR2340771A1 (fr) * 1976-02-14 1977-09-09 Hazemag Andreas Kg Barreau de percussion pour rotors de broyeurs a impact
US4180213A (en) * 1978-04-12 1979-12-25 Matsuzaka Company Ltd. Rotor of a coarse-reduction impact crusher
AT351906B (de) * 1978-05-02 1979-08-27 Voest Ag Schlagleistenhalterung fuer den rotor einer prallmuehle
FR2440779A2 (fr) * 1978-11-10 1980-06-06 Fives Cail Babcock Concasseur a percussion

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0787529A1 (de) * 1996-02-02 1997-08-06 Magotteaux International S.A. Rotor für Prallbrecher
BE1009998A3 (fr) * 1996-02-02 1997-11-04 Magotteaux Int Rotor pour concasseur a percussion.
DE19813308C2 (de) * 1998-03-26 2002-02-28 Hazemag & Epr Gmbh Schlagleiste für Prallmühlenrotoren und Rotor für Prallmühlen
EP0945182A1 (de) * 1998-03-26 1999-09-29 NOELL Service und Maschinentechnik GmbH Rotor für Prallmühlen
DE19813308A1 (de) * 1998-03-26 1999-10-07 Noell Serv & Maschtechn Gmbh Schlagleiste für Prallmühlenrotoren
US6129300A (en) * 1998-03-26 2000-10-10 Noell Service Und Maschinentechnik Gmbh Blow bar for impactors
EP0945181A1 (de) 1998-03-26 1999-09-29 NOELL Service und Maschinentechnik GmbH Schlagleiste für Prallmühlenrotoren
GB2461810A (en) * 2008-07-16 2010-01-20 Pulver Bvba Crusher device with removable crusher points
GB2461810B (en) * 2008-07-16 2012-07-11 Pulver Bvba Glass crushing device with removably installed crusher points
CN102151592A (zh) * 2011-01-11 2011-08-17 韶关市韶瑞重工有限公司 高效反击式制砂机
CN105597874A (zh) * 2016-03-16 2016-05-25 四川江油新川矿山机械有限公司 一种用于制砂的双腔破碎机
CN105597874B (zh) * 2016-03-16 2018-12-28 四川江油新川矿山机械有限公司 一种用于制砂的双腔破碎机
CN111420576A (zh) * 2020-05-08 2020-07-17 重庆矿迪冶金设备有限责任公司 立式强力混合机的易拆装转子结构及其拆卸和更换方法

Also Published As

Publication number Publication date
BE1008041A3 (fr) 1996-01-03
JPH0833849A (ja) 1996-02-06

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