EP0093223A1 - Sektormesser und Wellenantriebseinrichtung, insbesondere für Zerkleinerungsmaschinen und dergleichen - Google Patents

Sektormesser und Wellenantriebseinrichtung, insbesondere für Zerkleinerungsmaschinen und dergleichen Download PDF

Info

Publication number
EP0093223A1
EP0093223A1 EP82830116A EP82830116A EP0093223A1 EP 0093223 A1 EP0093223 A1 EP 0093223A1 EP 82830116 A EP82830116 A EP 82830116A EP 82830116 A EP82830116 A EP 82830116A EP 0093223 A1 EP0093223 A1 EP 0093223A1
Authority
EP
European Patent Office
Prior art keywords
sector
driving shaft
sectors
cutting
spacing
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Withdrawn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
EP82830116A
Other languages
English (en)
French (fr)
Inventor
Pierangelo Colombo
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.)
OFFICINA MECCANICA PIERANGELO COLOMBO
Original Assignee
OFFICINA MECCANICA PIERANGELO COLOMBO
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 OFFICINA MECCANICA PIERANGELO COLOMBO filed Critical OFFICINA MECCANICA PIERANGELO COLOMBO
Priority to EP82830116A priority Critical patent/EP0093223A1/de
Publication of EP0093223A1 publication Critical patent/EP0093223A1/de
Withdrawn legal-status Critical Current

Links

Images

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

Definitions

  • the present invention generally relates to crushing machines and,more specifically,to an improved arrangement of the sector knives and driving shafts therefor.
  • crushing machines are well known in the art, and they operate to crush large size materials to small pieces effective to be used in industrial processes.
  • the so-callea rotating knife crusher specifically pertains to the field of the present invention.
  • These rotating knife crushers generally comprise two shafts,extending parallely to one another and oppositely rotating, thereon there is mounted a plurality of spacer ring members, which are spaced from one another by a distance substantially corresponding to the thickness thereof.
  • the ring members of one of said shafts rotate in the gaps provided between the adjacent ring members of the other and vice versa.
  • the periphery of the ring members is so shaped as to define one or more saw teeth effective to engage, entrain and crush the materials to be crushed.
  • the mentioned ring members form the so-called rotating knives ana,due to the abrasive action thereto they are subjected during the crushing operation,said knives are easily worn.
  • the first comprises the so-called single piece knives consisting of a ring member on the, periphery thereof there are formed the crushing teeth, as thereinabove illustrated
  • These ring members are assembled in succession,by interposing between each ring pair a suitable spacer ring effective to provide a given . geometrical distance, to allow for the ring of one shaft to intermesh between those of the other.
  • the driving torque is transmitted by one or more keys,suitably sized and rigid with the driving shafts .
  • the second type consists of the so-called sector knives which are fixed on the driving shafts therefor either by means of screws which are screwed in radially extending threaded holes,that is holes perpendicularly extending with respect to the longitudinal axes of the driving shafts, or by means of screws effective to join the knives on a surface which is tangent to and on the outside of the shaft greatest diameter, thereon there are formed suitable slots therein ridges are engaged formea on the sector inner circle arc.
  • the main object of the present invention is to obviate for the thereinabove mentioned drawbacks by providing a sector knife and driving shaft arrangement for crushers of the mentioned second type which is effective to allow for the sector knives to be easily removed from the driving shafts therefor, and easily replaced thereon,without the need of using specifically designed tools or skilled operators,and in a reduced time.
  • an improved sector knive and driving shaft arrangement characterized in that the knife consists of one or more cutting sectors,one or more spacing sectors and one locking sector effective to be inserted by a geometrical type of coupling between two of said sectors,the cutting and spacing sectors being provided with restraining means, while the driving shaft is provided with circumferential slots having restraining means mating with said cutting ahd spacing sector restraining means and extending through a circle arc corresponding to the difference of the corresponding circumference ana the circle arc subtended by saia locking sector in such a way as to leave a portion devoid of restraining means or elements,provided for the insertion therein of said cutting and spacing sectors and effective to be closed by said locking sector,means being further provided for removably fixing saia locking sector to said driving shaft.
  • the cutting and spacing sector restraining means consist of male dovetail shaped restraining elements and the slot restraining means consist of female dovetail shaped restraining elements.
  • the cutting ana spacing sector dovetail shaped restraining means are formed on the lower portions of said sectors,said cutting and spacing sectors being provided,to this end, with a bottom surface having two inwardly directed side walls,and the driving shaft slot dovetail shaped restraining means are formed by providing said slots with side walls inwardly slanted from the bottom of said slots, the portion effective to engage said locking sector being provided with straight side walls,perpendicularly extending with respect to the bottom wall.
  • the means for fixing the locking sector to the driving shaft consist of a pin housed in opposite seats formed on the inner surface of the locking sector ana on the outside surface of the driving shaft,on the portion thereof devoid of said restraining means, and of a screw member or the like effective to be screwed in radially extending holes formed in the locking sector and driving shaft at the bottom of the slot length or portion devoid of said restraining means.
  • the pin or the like is provided with a through hole and the radially extending holes of the locking sector and driving shaft lead to the center portion of said opposite or facing seats, thereby said screw or the like is effective to pass through said pin as said screw is screwed.
  • a cutting ring or knife is herein illustrated according to the present invention and the reference numbers 1,1' and 1" indicate the knife beak sectors,the number thereof may be obviously greater than three.
  • Fig.2 is a cross-section view substantially taken according to a radial plane of the cutting sector 1.
  • the lower portion of the cutting sector is so machined as to provide two slanted surfaces or planes forming a dovetail shaped restraining section,extending through the circle arc defining the sector angular opening.
  • the characteristic restraining section angular opening is designed depending on the loads the sectors are subjected to during the crushing operation.
  • the slanted sides or walls 9 are removed for a suitable angular extension, symmetrically with respect to one another.
  • the cylindrical pin 4 In the central portion of the straight slot 10 there is housed the cylindrical pin 4,a portion thereof is held in a suitable seat or housing 11 formed on the shaft 6,while the remaining portion thereof is housed in a suitable bore 12 formed in the locking sector 3 having straight sides which extend through the overall volume of the straight wall slot:
  • the cylindrical pin 4 is bored according to the longitudinal axis thereof in order to allow for the screw 5 to pass through which screw traverses the locking sector 3 and is screwed in a suitable thread- hole 13 formed on the shaft 6'.
  • the main force possessedd on the beak shaped projecting portion 14 formed on the cutting sectors 1 and which comprises the active element for the cutting operation, has two principal operative components, that is a tangential component which tends to cause the involved sector to rotate in the slot 8and a radial component which tends to rise said sector.
  • the broad restraining surfaces forming the coupling dovetails sections are effective to maintain low the compression loads,thereby assuring an absolute undeformability of the coupling geometrical shape.
  • the sector knife and related driving shaft arrangement substantially eliminates all or the mentioned drawbacks oI the known crushing knives,in a simple way, thereby allowing for the knife to be quickly and easily removed from its driving shaft and a new knife to be quickly and easily replaced thereforwithout requiring any special tools nor skilled personnel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)
EP82830116A 1982-04-29 1982-04-29 Sektormesser und Wellenantriebseinrichtung, insbesondere für Zerkleinerungsmaschinen und dergleichen Withdrawn EP0093223A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP82830116A EP0093223A1 (de) 1982-04-29 1982-04-29 Sektormesser und Wellenantriebseinrichtung, insbesondere für Zerkleinerungsmaschinen und dergleichen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP82830116A EP0093223A1 (de) 1982-04-29 1982-04-29 Sektormesser und Wellenantriebseinrichtung, insbesondere für Zerkleinerungsmaschinen und dergleichen

Publications (1)

Publication Number Publication Date
EP0093223A1 true EP0093223A1 (de) 1983-11-09

Family

ID=8190122

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82830116A Withdrawn EP0093223A1 (de) 1982-04-29 1982-04-29 Sektormesser und Wellenantriebseinrichtung, insbesondere für Zerkleinerungsmaschinen und dergleichen

Country Status (1)

Country Link
EP (1) EP0093223A1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984002252A1 (en) * 1982-12-17 1984-06-21 Taarup As Maskinfab A conveyor drum for advancing straw material in a self-loading vehicle
FR2574001A1 (fr) * 1984-12-04 1986-06-06 Isme Sa Dechiqueteur a arbres rotatifs
EP0401620A1 (de) * 1989-06-08 1990-12-12 Lindemann Maschinenfabrik GmbH Rotor mit Schutzkappen
EP0503198A1 (de) * 1991-03-08 1992-09-16 Kabushiki Kaisha Kinki Zerkleinerer
EP0634093A1 (de) * 1993-07-12 1995-01-18 Claas Saulgau Gmbh Förder- oder Schneidtrommel für landw. Erntegüter

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1750941A (en) * 1925-07-07 1930-03-18 Pardee Frank Coal breaker
FR2257346A1 (en) * 1973-10-24 1975-08-08 Baikoff Eugene Waste disintegrator esp. for old tyres - has elastic axial displacement of cutting discs when encountering very hard material
EP0006261A1 (de) * 1978-06-20 1980-01-09 Electricite Neuchateloise S.A. Maschine zum Zerkleinern von sperrigem und/oder zähem Gut
GB2024655A (en) * 1978-07-05 1980-01-16 Metal Box Co Ltd Cutters for shredding-machines

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1750941A (en) * 1925-07-07 1930-03-18 Pardee Frank Coal breaker
FR2257346A1 (en) * 1973-10-24 1975-08-08 Baikoff Eugene Waste disintegrator esp. for old tyres - has elastic axial displacement of cutting discs when encountering very hard material
EP0006261A1 (de) * 1978-06-20 1980-01-09 Electricite Neuchateloise S.A. Maschine zum Zerkleinern von sperrigem und/oder zähem Gut
GB2024655A (en) * 1978-07-05 1980-01-16 Metal Box Co Ltd Cutters for shredding-machines

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984002252A1 (en) * 1982-12-17 1984-06-21 Taarup As Maskinfab A conveyor drum for advancing straw material in a self-loading vehicle
FR2537830A1 (fr) * 1982-12-17 1984-06-22 Taarup As Maskinfab Tambour de convoyage pour acheminer du fourrage dans un vehicule a chargement automatique
FR2574001A1 (fr) * 1984-12-04 1986-06-06 Isme Sa Dechiqueteur a arbres rotatifs
EP0184557A2 (de) * 1984-12-04 1986-06-11 Société Industrielle de la Doux S.A. Shredder mit rotierenden Achsen
EP0184557A3 (en) * 1984-12-04 1988-07-06 Societe Industrielle De La Doux S.A. Shredder with rotating shafts
EP0401620A1 (de) * 1989-06-08 1990-12-12 Lindemann Maschinenfabrik GmbH Rotor mit Schutzkappen
DE3918657A1 (de) * 1989-06-08 1990-12-13 Lindemann Maschfab Gmbh Rotor mit schutzkappen
EP0503198A1 (de) * 1991-03-08 1992-09-16 Kabushiki Kaisha Kinki Zerkleinerer
US5680999A (en) * 1991-03-08 1997-10-28 Kabushiki Kaisha Kinki Shredder
EP0634093A1 (de) * 1993-07-12 1995-01-18 Claas Saulgau Gmbh Förder- oder Schneidtrommel für landw. Erntegüter
DE4323214A1 (de) * 1993-07-12 1995-01-19 Claas Saulgau Gmbh Förder- oder Schneidtrommel für landwirtschaftliche Erntegüter

Similar Documents

Publication Publication Date Title
AU685690B2 (en) Demolition tools with jaws having replaceable working surfaces
US2747803A (en) Hammer rotor for hammermills
EP1715735B1 (de) Stumpfrodegerät
US4930710A (en) Rotary cutter, particularly for comminuting plastic material
CA1058849A (en) Cutter having inserts clamped with wedges
JP2007517662A (ja) ハンマ及びカッタを支持し、保持する装置並びに方法
US4936516A (en) Rotary cutter tool, particularly for shredding plastic materials
US4570517A (en) Self-interlocking split saw blade
CA1229970A (en) Cutting tool with removable blades
EP0093223A1 (de) Sektormesser und Wellenantriebseinrichtung, insbesondere für Zerkleinerungsmaschinen und dergleichen
JPS5916887B2 (ja) 鋸工具
JP2014213323A (ja) 切断アセンブリおよび粉砕装置で使用するための調整可能な切断具
AU675153B2 (en) Coupling rotor bodies to journals
US4232834A (en) Roll crusher
US3722805A (en) Grate for reduction mill
US6189821B1 (en) Apparatus for plastic particle reduction using dove-tailed blade
US4039151A (en) Impeller locking means for impact crusher rotor
CN108025311B (zh) 用于粉碎设备的转子
US3987525A (en) Rotary cutter
US2240743A (en) Apparatus for attaching turbine blades
SU1607936A1 (ru) Дробилка
WO1988005117A1 (en) Ring cutter for tunnel and shaft drilling in rock
RU42471U1 (ru) Сборная дисковая фреза
US3088502A (en) Inserted tooth saws and holder elements therefor
WO2017213991A1 (en) Secondary shredder

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB LI NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19840710

RIN1 Information on inventor provided before grant (corrected)

Inventor name: COLOMBO, PIERANGELO