EP0645189B1 - 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
EP0645189B1
EP0645189B1 EP19940402133 EP94402133A EP0645189B1 EP 0645189 B1 EP0645189 B1 EP 0645189B1 EP 19940402133 EP19940402133 EP 19940402133 EP 94402133 A EP94402133 A EP 94402133A EP 0645189 B1 EP0645189 B1 EP 0645189B1
Authority
EP
European Patent Office
Prior art keywords
shim
bearings
hoops
mill according
slideway
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.)
Expired - Lifetime
Application number
EP19940402133
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English (en)
French (fr)
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EP0645189A1 (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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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
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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 shredders such as those which are employed to prepare raw materials for the manufacture of products ceramics.
  • mills operate by rolling, that is to say that they are constituted by two counter-rotating rollers between which is poured the material to be ground which will be used to manufacture, by molding or extrusion, the products.
  • frets Two cylinders made of an alloy resistant to abrasion. Generally these cylinders are called “frets”. These frets are driven, by any suitable means, in rotation in opposite direction.
  • the object of the present invention is to overcome these drawbacks by proposing a hoop spacing adjustment system 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 more deformation, which is a considerable improvement over to known devices.
  • the present invention relates to a grinder according to claim 1 and the dependent claims 2 to 8.
  • the vertical bearing surfaces against the bearings and the surfaces obliques in contact are arranged substantially symmetrically with respect to a horizontal plane containing the result of the forces acting on the frets.
  • the grinder according to the invention has two frets 1 and 2 which are cylinders made of a resistant material 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 la and 2a are rotated in opposite direction by any appropriate means, for example by two driven pulleys 5 and 6 by belts or the like.
  • the bearings 3 and 4 are slidably mounted in two slides 7 provided in 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 by construction ensures perfect parallelism of this hoop called in which will follow the "fixed" fret.
  • the two bearings 4 are subjected to the thrust V of two hydraulic cylinders 12 which are identical and supplied by the same hydraulic pressure.
  • This wedge 11 is a variable thickness wedge.
  • it is made up of two parts 11a and 11b which are in abutment against one another.
  • Each part has a flat vertical face in abutment against a bearing and an oblique face in abutment against oblique side of the other party.
  • the part 1 presses it against the bearing 3 by a flat face 13 perpendicular to the axis of the slide 7; while 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 screw micrometric 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 movable transversely to the slide 7, while the part 11b is fixed transversely to the slide 7.
  • the part 11a slides vertically, its support against part 11b is always against the bearing surface of the face 15 which, for its part, is immobile transversely to the slide 7.
  • the parts 11a and 11b of the variable thickness shim are arranged so that the bearing surfaces of the faces 13, 14, 15 and 16 are crossed in their middle by the plane P containing the axes of the trees la and 2a and therefore containing the resulting from the applied forces. So the efforts are always symmetrically distributed and no asymmetric deformation is possible.
  • a shim additional plate 20 is interposed between the flat face 14 of the part 11b and the bearing 4.
  • the machine also includes grinders 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 transverse dimensions of the movable part 11a of the wedge 11 are not limited by those of the slide 7: the larger they are, the greater the adjustment range and this without the positions of the bearing surfaces of the faces 13, 14 or 15 are modified relative to the plane containing the axes of the trees 1a and 2a.
  • This horizontal slide arrangement eliminates all defects of systems currently in use. But it also provides other advantages.
  • an electrical holding detection device can be arranged. in contact with each wedge 11 against its bearing or with the two parts of the wedge 11 at variable thickness. This allows in case of accidental introduction of a foreign body send, as soon as contact is interrupted, a signal revealing the passage of a body foreign and can trigger the shutdown of the cylinder engine.
  • 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 support against the flat face 13 of the shim with variable thickness or against a part intermediate 13a, interposed between said face 13 and the wedge 11.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Rolling Contact Bearings (AREA)

Claims (8)

  1. Mühle zum Walzen von Rohmaterialien, die zur Herstellung keramischer Produkte bestimmt sind, der Art mit zwei gegenläufigen, zylindrischen Mantelringen (1, 2), die auf Lagern (3, 4) sitzen, wobei jeder der zylindrischen Mantelringe (1, 2) von Lagern (3 oder 4) getragen wird und die Lager (3, 4) erste Lager (3), die unbeweglich angebracht sind, und zweite Lager (4) umfassen, die in einer Führungsschiene (7) laufen können, wobei:
    mindestens ein Keil (11) mit veränderlicher Dicke zwischen ein erstes Lager (3) und ein zweites Lager (4) geschaltet ist, um den Abstand der beiden Walzringe (1, 2) einzustellen,
    jeder Keil (11) aus einem quer zur Laufschiene beweglichen Abschnitt (11a) und aus einem anderen Abschnitt (11 b) besteht,
    jeder Keilabschnitt (11a oder 11b) eine ebene Fläche (13 oder 14) senkrecht zur Achse der Führungsschien (7) und eine schräge Fläche (16 oder 15) aufweist, die parallel zur schrägen Fläche (15 oder 16) des anderen Abschnitts (11b oder 11a) des Keils verläuft und gegen diese anliegt,
    dadurch gekennzeichnet, daß die verschiebbaren Lager (4) der Schubkraft eines oder mehrerer hydraulischer Zylinder (12) ausgesetzt werden, wobei jeder bewegliche Abschnitt (11a) seine schräge Fläche (16) an der schrägen Fläche (15) des anderen Keilabschnitts (11b) vertikal entlanglaufen lassen kann, und die Mantelringe (1, 2) aufeinanderzubewegt werden können, indem der bewegliche Keilabschnitt (11a) nach oben bewegt wird.
  2. Mühle zum Walzen von Rohmaterialien, die zur Herstellung keramischer Produkte bestimmt sind, zwischen zwei Mantelringen nach Anspruch 1, dadurch gekennzeichnet, daß die Stellung der Stützflächen der Flächen (13, 14, 15, 16) so bestimmt ist, daß die Stützflächen relativ zur horizontalen Ebene, welche die Achsen der Wellen (1a, 2a) der Mantelringe (1, 2) enthält, im wesentlichen symmetrisch sind, damit die Kräfte stets symmetrisch verteilt sind.
  3. Mühle nach Anspruch 1 oder 2, bei der eine zusätzliche Unterlegplatte (20) zwischen der vertikalen Fläche (14) des unbeweglichen Keilabschnitts (11b) und dem entsprechenden Lager (4) angeordnet ist.
  4. Mühle nach Anspruch 3, bei der die Dicke der zusätzlichen Unterlegplatte (20) der von den Lagern (4) des beweglichen Mantelrings (2) zurückgelegten Strecke zwischen der untersten Stellung und der obersten Stellung des beweglichen Abschnitts (11a) des Keils (11) entspricht.
  5. Mühle nach einem der vorhergehenden Ansprüche, bei der die physikalischen Eigenschaften der Keile (11) so bestimmt sind, daß sie die Wärmedehnung der Mantelringe (1, 2) ausgleichen, um einen konstanten Mahlabstand beizubehalten.
  6. Mühle nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß sie eine elektrische Vorrichtung zur Detektion des Kontakthaltens jedes Keils (11) mit seiner Stütze umfaßt, welche die Antriebssteuerung der Zylinder anhalten kann.
  7. Mühle nach einem der vorhergehenden Ansprüche, bei der die Lager (3) mittels Widerlagern (10) fest gegen eine vertikale Wand (7a) der Führungsschiene (7) in Anlage gehalten werden.
  8. Mühle nach einem der Ansprüche 1 bis 6, bei der die arretierten Lager (3) direkt von den Widerlagern (10) in Anlage gegen den Keil (11) gehalten werden.
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
FR9311557A FR2710555B1 (fr) 1993-09-29 1993-09-29 Perfectionnements aux broyeurs de terre destinée à la fabrication de produits en terre cuite.
FR9311557 1993-09-29

Publications (2)

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

Family Cites Families (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
GB1192732A (en) * 1966-08-31 1970-05-20 Rose Downs & Thompson Ltd Roll Gap Control
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
DE69427794D1 (de) 2001-08-30
DE69427794T2 (de) 2002-04-25
EP0645189A1 (de) 1995-03-29
ES2161746T3 (es) 2001-12-16
FR2710555A1 (fr) 1995-04-07
FR2710555B1 (fr) 1995-11-24

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