EP0645189A1 - Verbesserungen an Erdmühlen zur Herstellung von Terrakotta-Produkten - Google Patents

Verbesserungen an Erdmühlen zur Herstellung von Terrakotta-Produkten Download PDF

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Publication number
EP0645189A1
EP0645189A1 EP94402133A EP94402133A EP0645189A1 EP 0645189 A1 EP0645189 A1 EP 0645189A1 EP 94402133 A EP94402133 A EP 94402133A EP 94402133 A EP94402133 A EP 94402133A EP 0645189 A1 EP0645189 A1 EP 0645189A1
Authority
EP
European Patent Office
Prior art keywords
bearings
bearing
wedge
crusher according
shim
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
EP94402133A
Other languages
English (en)
French (fr)
Other versions
EP0645189B1 (de
Inventor
Philippe Hatton
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.)
PELERIN ATELIERS DE CONSTRUCTIONS D'ORCAMPS
Original Assignee
PELERIN ATELIERS DE CONSTRUCTIONS D'ORCAMPS
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Filing date
Publication date
Application filed by PELERIN ATELIERS DE CONSTRUCTIONS D'ORCAMPS filed Critical PELERIN ATELIERS DE CONSTRUCTIONS D'ORCAMPS
Publication of EP0645189A1 publication Critical patent/EP0645189A1/de
Application granted granted Critical
Publication of EP0645189B1 publication Critical patent/EP0645189B1/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
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/28—Details
    • B02C4/32—Adjusting, applying pressure to, or controlling the distance between, milling members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/28—Details
    • B02C4/42—Driving mechanisms; Roller speed control

Definitions

  • the present invention relates to grinders such as those which are used to prepare the raw materials intended for the manufacture of ceramic products.
  • mills operate by rolling, that is to say that they are constituted by two counter-rotating rolls between which is poured the material to be ground which will be used to manufacture, by molding or extrusion, the products.
  • frets For this, two cylinders made of an abrasion resistant alloy are used. Generally these cylinders are called “frets”. These frets are driven, by any suitable means, in rotation in opposite directions.
  • the object of the present invention is to overcome these drawbacks by proposing a system for adjusting the spacing of the frets such that the bearing surfaces are always in the same position, these surfaces being placed so as to be symmetrical with respect to the axis of the resultant of the forces: it follows that there is no longer any deformation, which constitutes considerable progress compared to known devices.
  • the present invention relates to a mill by rolling between two hoops of raw materials intended for the manufacture of ceramic products of the type comprising two counter-rotating cylindrical hoops, each being carried by two bearings, the bearings of one of the frets being capable of sliding in a slide under the action of the thrust of a hydraulic cylinder while the bearings of the other hoop are immobilized, characterized in that the shims are shims with thickness variable, each consisting of two parts, each part having a vertical face in abutment against a bearing and an oblique face, the two oblique faces being parallel and in abutment against one another; one of the parts of the variable thickness shim being fixed and the other mobile and adjustable in height.
  • the vertical bearing surfaces against the bearings and the oblique surfaces in contact are arranged symmetrically with respect to a horizontal plane containing the result of the forces acting on the hoops.
  • the mill according to the invention comprises two hoops 1 and 2 which are cylinders made of a material resistant to wear.
  • the shaft 1a of the hoop 1 is carried by two bearings 3 and the shaft 2a of the hoop 2 is carried by two bearings 4.
  • These two shafts 1a and 2a are rotated in opposite directions by any suitable means, for example by two pulleys 5 and 6 driven by belts or the like.
  • the bearings 3 and 4 are slidably mounted in two slides 7 formed in the frame 8 of the crusher.
  • the bearings 3 are held by an adjustable stop 10 bearing against a vertical wall 7a integral with the slide 7 in which they can slide, which ensures by construction a parallelism perfect of this fret called in what follows the "fixed" fret.
  • the two bearings 4 are subjected to the thrust of two hydraulic cylinders 12 which are identical and supplied by the same hydraulic pressure.
  • This wedge 11 is a variable thickness wedge.
  • it consists of two parts 11a and 11b which are supported one against the other.
  • Each part has a flat vertical face in abutment against a bearing and an oblique face in abutment against the oblique face of the other part.
  • the part 11a bears against the bearing 3 by a flat face 13 perpendicular to the axis of the slide 7; while the part 11b bears against the bearing 4 by a flat face 14 perpendicular to the axis of the slide 7.
  • the oblique face 16 of the part 11a of the wedge 11 bears against the oblique face 15.
  • the part 11a of the wedge 11 is coupled by a threaded core 17 to a micrometric screw 18 driven by a motor 19, the axis of the screw 12 being perpendicular to that of the slides 7.
  • the part 11a of the wedge is therefore mobile, while the part 11b is fixed.
  • its support against the part 11b is always made against the surface 15 which, for its part, is stationary: it therefore appears that the support surface is always in the same position.
  • the parts 11a and 11b of the variable thickness shim are arranged so that the surfaces 13, 14 and 15 are crossed in their middle by the plane containing the axes of the shafts 1a and 2a and therefore containing the result of the forces applied. .
  • the forces are always symmetrically distributed and no asymmetrical deformation is possible.
  • the frets 1 and 2 are gradually brought closer to one another by lifting the part 11a from its low position to its high position.
  • the shim 20 is removed and the part 11b is returned to the low position and it is gradually raised until it reaches the position shown in FIG. 4 which corresponds to the maximum wear of the hoops.
  • the machine also includes grinding machines 21, 22 which are not described in more detail because they do not relate to the invention.
  • Another advantage of the device which is the subject of the present invention over the previously known devices lies in the fact that the dimensions of the movable part 11a of the wedge 11 are not limited: the larger it is the greater the adjustment range and this without that the positions of the bearing surfaces 13, 14 or 15 are not modified.
  • This horizontal slide arrangement eliminates all faults in the systems currently in use. But it also provides other advantages.
  • each wedge 11 can have an electrical detection device for keeping each wedge 11 in contact against its bearing or the two parts of the wedge 11 of variable thickness. This makes it possible in the event of accidental introduction of a foreign body to send, as soon as the contact is interrupted, a signal revealing the passage of a foreign body and which can trigger the stopping of the motorization of the cylinders.
  • the bearings 3 are held by the stop (s) 10 against a vertical wall 7a; but according to a variant, not shown, this wall 7a does not exist, the bearings 3 being held by the stops 10 directly in abutment against the flat face 13 of the shim with variable thickness or against an intermediate piece 13a, interposed between said face 13 and wedge 11.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Rolling Contact Bearings (AREA)
EP19940402133 1993-09-29 1994-09-26 Verbesserungen an Erdmühlen zur Herstellung von Terrakotta-Produkten Expired - Lifetime EP0645189B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9311557 1993-09-29
FR9311557A FR2710555B1 (fr) 1993-09-29 1993-09-29 Perfectionnements aux broyeurs de terre destinée à la fabrication de produits en terre cuite.

Publications (2)

Publication Number Publication Date
EP0645189A1 true EP0645189A1 (de) 1995-03-29
EP0645189B1 EP0645189B1 (de) 2001-07-25

Family

ID=9451337

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19940402133 Expired - Lifetime EP0645189B1 (de) 1993-09-29 1994-09-26 Verbesserungen an Erdmühlen zur Herstellung von Terrakotta-Produkten

Country Status (4)

Country Link
EP (1) EP0645189B1 (de)
DE (1) DE69427794T2 (de)
ES (1) ES2161746T3 (de)
FR (1) FR2710555B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102974422B (zh) * 2012-12-11 2014-12-03 四川峨胜水泥集团股份有限公司 辊压机限位器

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE43854C (de) * A. WAGNER in Böblingen, Württemberg Drehlager für Walzenachsen
US2158321A (en) * 1937-06-08 1939-05-16 Charles N Ford Ore pulverizer
GB993723A (en) * 1963-06-11 1965-06-02 Rose Downs & Thompson Ltd Rolling equipment
DE1227313B (de) * 1958-12-13 1966-10-20 Kloeckner Humboldt Deutz Ag Walzenbrecher mit UEberlastsicherung
CH475844A (fr) * 1966-08-31 1969-07-31 Rose Downs & Thompson Ltd Dispositif de commande de l'écartement des rouleaux d'un laminoir, notamment d'un laminoir à écailler
US3517531A (en) * 1967-11-03 1970-06-30 Gulf & Western Ind Prod Co Rolling mill gage control actuator system
US3684332A (en) * 1971-03-29 1972-08-15 Procter & Gamble Apparatus for adjusting the center distance between bearing support members

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE43854C (de) * A. WAGNER in Böblingen, Württemberg Drehlager für Walzenachsen
US2158321A (en) * 1937-06-08 1939-05-16 Charles N Ford Ore pulverizer
DE1227313B (de) * 1958-12-13 1966-10-20 Kloeckner Humboldt Deutz Ag Walzenbrecher mit UEberlastsicherung
GB993723A (en) * 1963-06-11 1965-06-02 Rose Downs & Thompson Ltd Rolling equipment
CH475844A (fr) * 1966-08-31 1969-07-31 Rose Downs & Thompson Ltd Dispositif de commande de l'écartement des rouleaux d'un laminoir, notamment d'un laminoir à écailler
US3517531A (en) * 1967-11-03 1970-06-30 Gulf & Western Ind Prod Co Rolling mill gage control actuator system
US3684332A (en) * 1971-03-29 1972-08-15 Procter & Gamble Apparatus for adjusting the center distance between bearing support members

Also Published As

Publication number Publication date
DE69427794T2 (de) 2002-04-25
DE69427794D1 (de) 2001-08-30
FR2710555B1 (fr) 1995-11-24
ES2161746T3 (es) 2001-12-16
FR2710555A1 (fr) 1995-04-07
EP0645189B1 (de) 2001-07-25

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