EP0368759A2 - Rotor für Hammermühle - Google Patents

Rotor für Hammermühle Download PDF

Info

Publication number
EP0368759A2
EP0368759A2 EP89403086A EP89403086A EP0368759A2 EP 0368759 A2 EP0368759 A2 EP 0368759A2 EP 89403086 A EP89403086 A EP 89403086A EP 89403086 A EP89403086 A EP 89403086A EP 0368759 A2 EP0368759 A2 EP 0368759A2
Authority
EP
European Patent Office
Prior art keywords
flanges
rotor
axial
hammer
covers
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.)
Granted
Application number
EP89403086A
Other languages
English (en)
French (fr)
Other versions
EP0368759B1 (de
EP0368759A3 (en
Inventor
Francis Haesebrouck
René Bertho
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.)
SAMBRE ET MEUSE
Francaise des Ferrailles C F F Cie
Original Assignee
SAMBRE ET MEUSE
Francaise des Ferrailles C F F Cie
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 SAMBRE ET MEUSE, Francaise des Ferrailles C F F Cie filed Critical SAMBRE ET MEUSE
Publication of EP0368759A2 publication Critical patent/EP0368759A2/de
Publication of EP0368759A3 publication Critical patent/EP0368759A3/fr
Application granted granted Critical
Publication of EP0368759B1 publication Critical patent/EP0368759B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • B02C2013/2808—Shape or construction of beater elements the beater elements are attached to disks mounted on a shaft

Definitions

  • the present invention relates to a hammer crusher rotor, in particular a rotor for crushers used for shredding metallic or composite objects, such as the carcasses of motor cars or household appliances.
  • the crushers targeted by the invention comprise a fixed casing housing a rotor whose central drive shaft carries several flanges. Hammers are pivotally mounted between the flanges, on eccentric axes passing through these flanges parallel to the central shaft.
  • the internal walls of the fixed casing include an anvil-forming part which contributes with the hammers of the rotor to shred metal objects brought in by a feed ramp.
  • the rotor shaft is coupled to a motor which drives it at such a speed that the hammers perform the shredding work, under the cumulative effect of their kinetic energy and the centrifugal force which energizes them towards the position of maximum radial distance from their center of gravity.
  • these plates are removable caps covering only the periphery of the flanges, to which they are fixed by means of screws.
  • These caps are complicated to produce, their assembly is long and tedious because using very many screws which, moreover, in service, are exposed to contact with objects being shredded. In addition, these caps do not close the spaces between the flanges.
  • the protective plates together constitute a sleeve completely covering the side wall of the rotor with the exception of passages provided for hammers.
  • the elementary protective members are two half-shells comprising the notches necessary for the passage of the hammers.
  • the elementary protective members are tiles arranged in axial rows each associated with one of the hammer-carrying shafts. Each tile has an axial dimension corresponding to the step of succession of the flanges.
  • the protective members have on their internal face retaining ears engaged between the flanges and each crossed by one of the hammer-carrying axes.
  • the protective members known from FR -A-2,304,404 or DE-A- 35 24 725 have drawbacks. These are parts produced for example by molding, therefore costly to manufacture, in particular in the case of half-shells (DE-A). In the case of FR-A-23 04 404, the weight of the ear required for each protective tile considerably increases the rotor, and therefore increases its cost price. In the two known devices, the centrifugal force undergone by the protective members is transmitted to the rotor structure by the hammer-carrying shafts, which increases the loading undergone by them and promotes the wear of the bores of the flanges.
  • the protective members are caps covering the end of the hammer-carrying arms. These caps are also provided with an ear crossed by the hammer-carrying shaft. These ears are provided with conformations which interact with complementary conformations of the arms to ensure restraint with regard to centrifugal force.
  • the protection is even more localized than according to FR - A - 2 522 536, and the parts (caps and arms) are very complex.
  • the object of the invention is to overcome the above drawbacks and more particularly to rationalize the protective elements and the structure by which they are associated with the other elements of the rotor.
  • the hammer crusher rotor intended in particular for shredding cars or household appliances, comprising flanges fixed at an axial distance from each other along a motor shaft of which they are integral in rotation, these flanges supporting eccentric shafts parallel to the drive shaft, while a hammer is mounted oscillating on one of the eccentric shafts in each space between two successive flanges, and that protective covers covering the periphery of the flanges partially close the periphery of the rotor by defining between them passages for the hammers, is characterized in that each cover has, on the side facing the motor shaft, interengagement conformations with complementary conformations formed at the periphery of the flanges, this interengagement allowing the axial sliding of the cover, at least during assembly, but retaining the cover radially.
  • the protective covers are retained directly by the flanges with respect to the centrifugal force. This load is therefore no longer transmitted by the hammer carrier shafts, and is no longer supported by the bores provided in the flanges for the hammer carrier shafts.
  • the quantity of material necessary to achieve the radial attachment between the protective covers and the flanges can be limited to the minimum strictly necessary from the mechanical point of view, and the mass gained can be transferred to the hammers to make them even more effective. .
  • the ears of the prior art are far from optimal since only their end portions located beyond the associated hammer-carrying shaft is effective, the rest of the ear having a role of transmission of the retaining force between said end portion and the tile or the protective half-shell.
  • the mounting of the protective covers by axial sliding according to the invention is very convenient.
  • the covers can be constituted by sections of section cut to length. Their manufacture is then very economical, and assembly is facilitated because the number of covers can then be considerably reduced: each group of successive inter-flange intervals in which a hammer-carrying shaft carries no hammer can be covered by a single cover of appropriate length.
  • the rotor 1 comprises a central drive shaft 2 supported by bearings 3 and driven by a motor not shown.
  • On the shaft are fixed coaxially with it several flanges 4 in the form of discs arranged at regular axial intervals from one another.
  • Each disc 4 is crossed by four bores 5 located at equal radial distance from the shaft 2 and distributed at regular angular intervals (90 °) around of the axis of the central shaft 2.
  • Each bore 5 of a disk 4 has a common axis with a bore 5 of each of the other disks 4, an axis which is parallel to the axis of the central shaft 2.
  • Each row of coaxial bores is traversed by a hammer-carrying shaft 6 parallel to the shaft 2 and eccentric with respect thereto.
  • a hammer-carrying shaft 6 parallel to the shaft 2 and eccentric with respect thereto.
  • one and only one of the hammer carrier shafts 6 carries a hammer 7 which can pivot freely around said hammer carrier shaft.
  • each hammer 7 has a through bore 17 in which the associated hammer-carrying shaft 6 is threaded.
  • Protective covers 8 cover the periphery of the discs 4 and the interdisc spaces, while providing the right of each interdisc space, an opening 18 for the corresponding hammer 7.
  • each cover has an outer surface in the form of a quarter cylinder.
  • the covers are aligned in four axial rows each associated with one of the hammer-carrying shafts.
  • Each cover is arranged symmetrically with respect to a plane passing through the axis of the associated hammer-carrying shaft, and through the axis of the central shaft 2. In each row, the successive covers have between them an axial interval defining one of the openings 18.
  • Each cover 8 has two opposite longitudinal flanges 11, bent towards the shaft 2 and engaged in corresponding notches 13 formed in the periphery of the discs 4.
  • Each notch 13 is located at equal angular distance, measured around the axis of the shaft 2, of two successive bores 5 of the same flange.
  • the two side walls 14 of each notch 13, located on either side of a bottom wall 16, are parallel to each other and symmetrical with respect to an axial plane 19. This makes the notches 13 very easy to produce, in particular thanks to the absence of undercut.
  • Each notch 13 receives in service two flanges 11 belonging to two cowls 8 succeeding each other in the circumferential direction.
  • each boss 21 is engaged in a recess of corresponding shape of a cover 11, recess defined by the inner faces of the two edges 11 and by the cylindrical inner face of the cover. This interengagement of the boss 21 in the correspondingly shaped recess of the cover effectively retains the cover 8 with regard to any movement of radial distance with respect to the shaft 2.
  • each notch 13 fills the latter almost completely, apart from the assembly clearances.
  • the flanges 11 are biased, by a bending force tending to separate them from each other to escape the notches 13.
  • the flanges 11 do not have the space to bend enough to escape radially outwards.
  • the notches 13 of the successive discs are aligned along four axial lines.
  • the covers 8 are profiled sections, each of which is cut to the desired length taking into account the axial positions where it is desired to make the openings 18 in order to accommodate a hammer 7 there (in the example shown, when considering the entire rotor, the openings 18 are arranged along a propeller). Thus, some of the covers 18 cover several interdisc spaces. Between two axially aligned openings 18, or respectively each opening 18 and the adjacent axial end of the rotor, there is always only one cover 8 of suitable length. The flanges 11 can therefore, depending on the length of the cover to which they belong, occupy several successive notches 13 aligned axially.
  • the successive cowls 8 of the same axial row have edges 23 towards each other which define between them one of the openings 18 and which project into the interdiscal space associated with this opening.
  • the hammers 7, which are mounted with the possibility of sliding along the carrier shafts hammers 6 are positioned axially by the two edges 23 between which they are mounted.
  • the interengagement of the flanges 11 and the notches 13 is, by itself sliding parallel to the axis of the motor shaft 2.
  • the covers 11 are mounted by sliding from one end of the rotor, parallel to the axis of the motor shaft 2.
  • the covers 8 are slidably engaged on the disks, distributing them along the length of the rotor so as to form the openings 18 at the locations provided. Then, a hammer-carrying shaft 6 is threaded into the row of bores 5 associated with the covers in place, while presenting in each opening 18 of this row the corresponding hammer 7 so that the hammer-carrying shaft 6 also passes through the bore 17 of this hammer.
  • FIG. 4 shows the assembly of a row of hoods and hammers, and the assembly of the corresponding shaft 6.
  • the blocking of the assembly is ensured, at each end, by four stop plates 22, each of which is fixed by two nuts 10, therefore in a removable manner, to the external face of the terminal disc so as to close one of the bores 5 from this disc and to project radially outward to prevent the adjacent cover from escaping axially.
  • the number of hammer-carrying shafts and the number of hammers may be different.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
EP89403086A 1988-11-10 1989-11-08 Rotor für Hammermühle Expired - Lifetime EP0368759B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8814703 1988-11-10
FR8814703A FR2638661B1 (fr) 1988-11-10 1988-11-10 Rotor de concasseur a marteaux

Publications (3)

Publication Number Publication Date
EP0368759A2 true EP0368759A2 (de) 1990-05-16
EP0368759A3 EP0368759A3 (en) 1990-08-01
EP0368759B1 EP0368759B1 (de) 1994-02-02

Family

ID=9371776

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89403086A Expired - Lifetime EP0368759B1 (de) 1988-11-10 1989-11-08 Rotor für Hammermühle

Country Status (6)

Country Link
US (1) US4973005A (de)
EP (1) EP0368759B1 (de)
CA (1) CA2002639A1 (de)
DE (1) DE68912890T2 (de)
ES (1) ES2049838T3 (de)
FR (1) FR2638661B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2692172A1 (fr) * 1992-06-13 1993-12-17 Noell Service Maschinentechnik Rotor pour broyeur à impact, comportant des segments d'usure.
WO1999032228A1 (de) * 1997-12-18 1999-07-01 Svedala Lindemann Gmbh Rotor für eine zerkleinerungsmaschine
US6648253B1 (en) 1998-08-07 2003-11-18 Metso Lindemann Gmbh Method for operating the air circuit and conveying stock flow in the casing of a hammer mill

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5516052A (en) * 1991-05-23 1996-05-14 Ecomed, Inc. Medical waste collection and treatment system
US5595711A (en) * 1994-03-11 1997-01-21 Ecomed, Inc. Isolated biological and medical waste processor and lid liner carrying a chemically sensitive decontaminant
US5534162A (en) * 1994-03-11 1996-07-09 Ecomed, Inc. Method for disposal of biological waste
US5941467A (en) * 1997-09-10 1999-08-24 Mcardle; Matthew J. System and method for reducing material
US6102312A (en) 1999-06-17 2000-08-15 Aberle; David H. Rotary hammer mill
CA2316471A1 (fr) * 2000-08-02 2002-02-02 Guy Gaudreault Tete de coupe a rotor horizontal pour applications forestieres
CA2493348C (en) * 2005-01-19 2009-10-27 Barry D. Fenton Rotating cylindrical flailing vegetation cutter
US20060226269A1 (en) * 2005-04-12 2006-10-12 Riverside Engineering, Inc. Offset disc hammer assembly for a hammermill
CA2523324C (en) * 2005-09-27 2010-11-23 Barry D. Fenton Blade for rotary cutter
CN101940965A (zh) * 2010-09-26 2011-01-12 无锡市华星电力环保修造有限公司 用于脱硫灰结块破碎用的轻型单辊破碎机
US20130233955A1 (en) * 2012-03-08 2013-09-12 Esco Corporation Shredder hammers
USD731565S1 (en) 2013-11-14 2015-06-09 Esco Corporation Stepped hammer for shredding machines
JP5995374B2 (ja) * 2014-03-25 2016-09-21 杉山重工株式会社 反撥式粉砕機
CN107837928B (zh) * 2017-03-22 2023-08-01 四川理工学院 一种报废汽车破碎机机组
WO2020038280A1 (zh) * 2018-08-19 2020-02-27 浙江晟达机械有限公司 一种单板翻击式破碎机及其破碎方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3727848A (en) * 1971-12-10 1973-04-17 Sivger Steel Casting Co Hammer mill with replaceable spider arm tips
GB1474005A (en) * 1975-03-17 1977-05-18 Lindemann Maschfab Gmbh Hammer breakers
FR2522536B1 (fr) * 1983-03-02 1988-12-09 Newell Manufacturing Cy Broyeur a marteaux equipe d'un rotor a disques proteges par des calottes, pour le dechiquetage d'objets metalliques
DE3327204C1 (de) * 1983-07-28 1993-04-15 Thyssen Industrie Ag, 4300 Essen Anordnung zum Versteifen und Distanzieren von mehreren auf einer Rotorwelle drehfest gelagerten Ringscheiben eines Hammerbrecherrotors
DE3524725A1 (de) * 1985-07-11 1987-01-15 Hans Ing Grad Lenz Hammermuehle mit durch schutzmittel gegen verschleiss geschuetzten rotorteilen
DE3721961C1 (de) * 1987-07-03 1988-11-17 Thyssen Industrie Kappe fuer die allseitige UEberdeckung der Enden der Tragkoerper eines Hammerbrecherrotors

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2692172A1 (fr) * 1992-06-13 1993-12-17 Noell Service Maschinentechnik Rotor pour broyeur à impact, comportant des segments d'usure.
WO1999032228A1 (de) * 1997-12-18 1999-07-01 Svedala Lindemann Gmbh Rotor für eine zerkleinerungsmaschine
US6412718B1 (en) * 1997-12-18 2002-07-02 Svedala Lindemann Gmbh Rotor for a reducing machine
US6648253B1 (en) 1998-08-07 2003-11-18 Metso Lindemann Gmbh Method for operating the air circuit and conveying stock flow in the casing of a hammer mill

Also Published As

Publication number Publication date
ES2049838T3 (es) 1994-05-01
FR2638661B1 (fr) 1991-02-08
CA2002639A1 (en) 1990-05-10
US4973005A (en) 1990-11-27
DE68912890D1 (de) 1994-03-17
EP0368759B1 (de) 1994-02-02
DE68912890T2 (de) 1994-06-01
FR2638661A1 (fr) 1990-05-11
EP0368759A3 (en) 1990-08-01

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