EP1581344B1 - System for fixing the mobile jaw of a cone or giratory crusher - Google Patents

System for fixing the mobile jaw of a cone or giratory crusher Download PDF

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Publication number
EP1581344B1
EP1581344B1 EP03796119A EP03796119A EP1581344B1 EP 1581344 B1 EP1581344 B1 EP 1581344B1 EP 03796119 A EP03796119 A EP 03796119A EP 03796119 A EP03796119 A EP 03796119A EP 1581344 B1 EP1581344 B1 EP 1581344B1
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EP
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Prior art keywords
jaw
head
notches
movable jaw
periphery
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Expired - Lifetime
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EP03796119A
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German (de)
French (fr)
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EP1581344A1 (en
Inventor
Jean-Pierre Delille
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Metso France SAS
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Metso Minerals France SAS
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C2/00—Crushing or disintegrating by gyratory or cone crushers
    • B02C2/02—Crushing or disintegrating by gyratory or cone crushers eccentrically moved
    • B02C2/04—Crushing or disintegrating by gyratory or cone crushers eccentrically moved with vertical axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C2/00—Crushing or disintegrating by gyratory or cone crushers
    • B02C2/005—Lining

Definitions

  • the present invention relates to a system for fixing the movable jaw of a crusher, cone or gyratory.
  • Cone crushers and gyratory crushers are intended for mine or quarry installations and serve to reduce the size of aggregates and ores to dimensions required for their subsequent use.
  • They comprise a frustoconical grinding tank, whose wall supports a fixed jaw, and a conical head carrying the movable jaw mounted on a shaft coaxial with the tank.
  • the geometric axis of the conical head at the top thereof, a certain angle with the axis of the main shaft, which gives the head, when the eccentric rotates, a nutation movement.
  • the materials are gradually ground until they reach the dimension of the smallest space r between the fixed jaw and the movable jaw, at the base of the swallowing head and located at 2 on the figure 1 showing a cone crusher.
  • the cone crusher according to the figure 1 , comprises a feed hopper 8 located above the opening 1 of a grinding chamber or tank 3.
  • the grinding head 5 is supported by a shaft 10 above a bearing thereof, with its geometric axis making, thanks to an eccentric 12, an angle ⁇ with the axis of the shaft so as to have a nutation movement when the eccentric 12 rotates.
  • the fixed jaw 11 is fixed under the opening 1, at the upper part of the vessel 3.
  • the movable jaw 4 is mounted on the head 5 and rests in the lower part on the head 5, while it is clamped in the upper part on the head by a screw 6, via a ring 7. This clamping is achieved by a component of the clamping force of the screw 6 directed along the generatrix of the cone of the movable jaw 4.
  • the parts which wear out the fastest are the jaws and in particular this movable jaw 4. As a result, it must be changed periodically after wear. Indeed, when the material to be milled consists of pure silica, the life of the jaw 4 may not exceed a few tens of hours. On the other hand, when it comes to limestone, this life can go up to several years.
  • a ring 7 is interposed between the screw head and the upper edge of the movable jaw. For disassembly, this ring is cut with the torch and released with a suitable tool, which releases the screw which can then turn freely.
  • the fastening system comprises a locking element, whose diameter is at least equal to that of the top of the cone of the movable jaw, which is provided with holes distributed on its periphery, in which threads are screwed into threads located in the head or a part integral with it.
  • the locking element is constituted in two parts, by a locking plate provided with holes distributed on its periphery and a locking bolt located below, screwed into a axial tapping of the head and secured in rotation with said plate, the clamping being effected by means of screws passing through the holes of the plate and screwing into the threads made in the locking pin.
  • the locking element is constituted by a locking washer provided with holes distributed on its periphery; a tightening nut, screwed onto the shaft above the head and integral in rotation with said locking washer, the tightening taking place by means of screws passing through the holes of the locking washer and screwing itself into threaded holes in said clamping nut.
  • the invention provides in a system that said element, has on its outer periphery notches directed radially outwards and regularly distributed over said periphery and that the movable jaw has, on its inner periphery, at the level of its opening radially inwardly directed tenons, regularly distributed over said periphery and in equal number to said notches, the tenons penetrating in the mounted state in said notches in order to secure the locking element and the movable jaw in rotation during the mill operation.
  • the number of tenons and notches is preferably equal to four. It can however be lower or higher, it being understood that the number of notches is at least equal to the number of tenons.
  • the movable jaw 4 is disposed on the conical head 5 and is classically resting, as shown in FIG. figure 1 , on the broad lower part of the conical head. Its tightening in this position is effected by means of a locking element consisting of a two-part screw, a locking plate 16 whose diameter is at least equal to the outer diameter, at its upper part, of the cone formed by the jaw 4 and a threaded stud 13 secured to the plate by screws 17.
  • a protective cover 23 of the screw heads 17 is also provided on the locking plate and simply fixed to it with a screw.
  • the rotation of the jaw 4, during operation, relative to the head 5, provides a self-tightening of the part 16, 13 and thus allows to maintain adequate clamping despite wear of the jaw.
  • tenons 14 are provided on the inner periphery of the jaw 4 at its upper opening.
  • 15 shaped notches corresponding and in equal number are made on the periphery of the locking plate 16. Notches and tenons are regularly distributed over said peripheries so as to mesh with each other.
  • the same system of tenons and notches can be applied to the rotary crusher, to secure the clamping nut and the jaw.
  • the figure 4 shows a section of the system at the opening of the cone forming the jaw 4.
  • four tenons and four notches are provided. But it can of course be expected a number of tenons and notches lower or higher.

Abstract

The fixing for a moving jaw (4) on the conical head (5) of a stone crusher has a locking member (16) fastened to the head and made with a series of radial notches (15) facing outwards and spaced evenly round its periphery. The inner periphery of the jaw has an equal number of inward-facing radial tongues (14) on the level or its upper aperture mthat engage with the notches, fixing the locking member to the jaw so they rotate together. The notches and tongues are e.g. four in number.

Description

La présente invention concerne un système de fixation de la mâchoire mobile d'un broyeur, à cône ou giratoire. Les broyeurs à cône et les broyeurs giratoires sont destinés aux installations de mines ou de carrières et servent à la réduction de la taille des granulats et des minerais à des dimensions requises par leur utilisation ultérieure.The present invention relates to a system for fixing the movable jaw of a crusher, cone or gyratory. Cone crushers and gyratory crushers are intended for mine or quarry installations and serve to reduce the size of aggregates and ores to dimensions required for their subsequent use.

Ils comportent une cuve de broyage tronconique, dont la paroi supporte une mâchoire fixe, et une tête conique portant la mâchoire mobile montée sur un arbre coaxial à la cuve. L'axe géométrique de la tête conique fait au sommet de celle-ci, un certain angle avec l'axe de l'arbre principal, ce qui donne à la tête, lorsque l'excentrique tourne, un mouvement de nutation. Lors de leur descente dans la cuve, les matériaux sont progressivement broyés jusqu'à atteindre la dimension du plus petit espace r entre la mâchoire fixe et la mâchoire mobile, au niveau de la base de la tête en nutation et situé en 2 sur la figure 1 montrant un broyeur à cône.They comprise a frustoconical grinding tank, whose wall supports a fixed jaw, and a conical head carrying the movable jaw mounted on a shaft coaxial with the tank. The geometric axis of the conical head at the top thereof, a certain angle with the axis of the main shaft, which gives the head, when the eccentric rotates, a nutation movement. During their descent into the tank, the materials are gradually ground until they reach the dimension of the smallest space r between the fixed jaw and the movable jaw, at the base of the swallowing head and located at 2 on the figure 1 showing a cone crusher.

Le broyeur à cône selon la figure 1, comporte une trémie d'alimentation 8 située au-dessus de l'ouverture 1 d'une chambre de broyage ou cuve 3. La tête de broyage 5 est supportée par un arbre 10 au-dessus d'un palier de celui-ci, avec son axe géométrique faisant, grâce à un excentrique 12, un angle α avec l'axe de l'arbre de façon à avoir un mouvement de nutation lorsque l'excentrique 12 tourne. La mâchoire fixe 11 est fixée sous l'ouverture 1, à la partie supérieure de la cuve 3.The cone crusher according to the figure 1 , comprises a feed hopper 8 located above the opening 1 of a grinding chamber or tank 3. The grinding head 5 is supported by a shaft 10 above a bearing thereof, with its geometric axis making, thanks to an eccentric 12, an angle α with the axis of the shaft so as to have a nutation movement when the eccentric 12 rotates. The fixed jaw 11 is fixed under the opening 1, at the upper part of the vessel 3.

La mâchoire mobile 4 est montée sur la tête 5 et repose en partie basse sur la tête 5, tandis qu'elle est serrée en partie haute sur la tête par une vis 6, par l'intermédiaire d'un anneau 7. Ce serrage est réalisé par une composante de la force de serrage de la vis 6 dirigée selon la génératrice du cône de la mâchoire mobile 4.The movable jaw 4 is mounted on the head 5 and rests in the lower part on the head 5, while it is clamped in the upper part on the head by a screw 6, via a ring 7. This clamping is achieved by a component of the clamping force of the screw 6 directed along the generatrix of the cone of the movable jaw 4.

Au cours du travail de broyage, les pièces qui s'usent le plus vite sont les mâchoires et notamment cette mâchoire mobile 4. De ce fait, celle-ci doit être changée périodiquement après usure. En effet, lorsque le matériau à broyer est constitué de silice pure, la durée de vie de la mâchoire 4 peut ne pas dépasser quelques dizaines d'heures. Par contre, lorsqu'il s'agit de calcaire, cette durée de vie peut aller jusqu'à plusieurs années.During grinding work, the parts which wear out the fastest are the jaws and in particular this movable jaw 4. As a result, it must be changed periodically after wear. Indeed, when the material to be milled consists of pure silica, the life of the jaw 4 may not exceed a few tens of hours. On the other hand, when it comes to limestone, this life can go up to several years.

A cette fin, elle est fixée de façon amovible sur la tête au moyen de la vis 6. Le serrage de cette vis 6 demande une force très élevée afin d'éviter à la mâchoire de battre sur la tête. Pour la serrer, on utilise en général une clé sur laquelle l'opérateur tape avec une masse. De plus, au cours du travail, la mâchoire mobile 4 a tendance à tourner sur la tête mais, par ce mouvement, elle entraîne la vis 6 qui s'auto serre en maintenant la mâchoire. L'auto serrage de la vis fait que le démontage exige aussi l'application d'une force très élevée. Afin de faciliter le démontage, un anneau 7 est intercalé entre la tête de vis et le bord supérieur de la mâchoire mobile. Pour le démontage, cet anneau est coupé au chalumeau et dégagé avec un outil approprié, ce qui libère la vis qui peut alors tourner librement.To this end, it is removably attached to the head by means of the screw 6. The tightening of the screw 6 requires a very high force to prevent the jaw beating on the head. To tighten it, we generally use a key on which the operator types with a mass. In addition, during work, the movable jaw 4 tends to turn on the head but, by this movement, it drives the screw 6 which is self-tightening while holding the jaw. The self-tightening of the screw makes disassembly also requiring the application of a very high force. To facilitate disassembly, a ring 7 is interposed between the screw head and the upper edge of the movable jaw. For disassembly, this ring is cut with the torch and released with a suitable tool, which releases the screw which can then turn freely.

Afin de faciliter le montage et le démontage de la mâchoire, selon la demande de brevet français n° 02 09256 , le système de fixation comporte un élément de blocage, dont le diamètre est au moins égal à celui du sommet du cône de la mâchoire mobile, qui est pourvu de trous répartis sur sa périphérie, dans lesquels sont enfilés des vis se vissant dans des taraudages situés dans la tête ou une pièce solidaire de celle-ci.In order to facilitate the assembly and disassembly of the jaw, according to the French patent application no. 02 09256 , the fastening system comprises a locking element, whose diameter is at least equal to that of the top of the cone of the movable jaw, which is provided with holes distributed on its periphery, in which threads are screwed into threads located in the head or a part integral with it.

Un autre system de fixation ayant les caractéristiques de préambule de la revendication 1 est connu du document FR 2 459 077 .Another fastening system having the preamble features of claim 1 is known from the document FR 2,459,077 .

Selon une forme de réalisation du broyeur à cône présenté dans cette demande, l'élément de blocage est constitué en deux parties, par un plateau de blocage pourvu de trous répartis sur sa périphérie et un goujon de blocage situé au-dessous, vissé dans un taraudage axial de la tête et solidaire en rotation avec ledit plateau, le serrage s'effectuant au moyen de vis traversant les trous du plateau et se vissant dans les taraudages pratiqués dans le goujon de blocage.According to one embodiment of the cone mill presented in this application, the locking element is constituted in two parts, by a locking plate provided with holes distributed on its periphery and a locking bolt located below, screwed into a axial tapping of the head and secured in rotation with said plate, the clamping being effected by means of screws passing through the holes of the plate and screwing into the threads made in the locking pin.

Selon cette demande toujours, dans le cas d'un broyeur giratoire, l'élément de blocage est constitué par une rondelle de blocage pourvue de trous répartis sur sa périphérie ; une écrou de serrage, vissé sur l'arbre au-dessus de la tête et solidaire en rotation de ladite rondelle de blocage, le serrage s'effectuant au moyen de vis traversant les trous de la rondelle de blocage et se vissant dans des taraudages pratiqués dans ledit écrou de serrage.According to this demand always, in the case of a gyratory mill, the locking element is constituted by a locking washer provided with holes distributed on its periphery; a tightening nut, screwed onto the shaft above the head and integral in rotation with said locking washer, the tightening taking place by means of screws passing through the holes of the locking washer and screwing itself into threaded holes in said clamping nut.

La solution selon la demande précitée convient parfaitement pour faciliter le montage et le démontage de la tête mobile. Toutefois, un serrage fort est encore nécessaire pour empêcher la mâchoire de tourner par rapport au plateau de blocage ou à l'écrou de serrage (broyeur giratoire). Il convient donc de trouver une solution au problème de la solidarisation en rotation du plateau (ou de l'écrou) et de la mâchoire.The solution according to the above application is ideal for facilitating the assembly and disassembly of the movable head. However, a strong tightening is still necessary to prevent the jaw from rotating relative to the locking plate or the clamping nut (gyratory mill). It is therefore necessary to find a solution to the problem of the rotational connection of the plate (or nut) and the jaw.

Pour résoudre ce problème, l'invention prévoit dans un système que ledit élément, présente sur sa périphérie extérieure des encoches dirigées radialement vers l'extérieur et régulièrement réparties sur ladite périphérie et que la mâchoire mobile présente, sur sa périphérie intérieure, au niveau de son ouverture des tenons dirigés radialement vers l'intérieur, régulièrement répartis sur ladite périphérie et en nombre égal auxdites encoches, les tenons pénétrant à l'état monté dans lesdites encoches afin de solidariser l'élément de blocage et la mâchoire mobile en rotation pendant le fonctionnement du broyeur.To solve this problem, the invention provides in a system that said element, has on its outer periphery notches directed radially outwards and regularly distributed over said periphery and that the movable jaw has, on its inner periphery, at the level of its opening radially inwardly directed tenons, regularly distributed over said periphery and in equal number to said notches, the tenons penetrating in the mounted state in said notches in order to secure the locking element and the movable jaw in rotation during the mill operation.

Selon l'invention, le nombre de tenons et des encoches est de préférence égal à quatre. Il peut toutefois être inférieur ou supérieur, étant entendu que le nombre d'encoches est au moins égal au nombre de tenons.According to the invention, the number of tenons and notches is preferably equal to four. It can however be lower or higher, it being understood that the number of notches is at least equal to the number of tenons.

L'invention sera mieux comprise au moyen d'un exemple de réalisation non limitatif décrit ci-après et représenté sur le dessin annexé sur lequel sont représentées :

  • Figure 1 : Une coupe schématique d'un broyeur à cône selon la technique antérieure ;
  • Figure 2 : Une vue de dessus en perspective de la mâchoire mobile selon la présente invention ;
  • Figure 3 : Une coupe schématique de la fixation de la mâchoire mobile d'un broyeur à cône selon l'invention ;
  • Figure 4 : Une vue en coupe selon la ligne V-V de la figure 3.
The invention will be better understood by means of a nonlimiting exemplary embodiment described below and shown in the accompanying drawing in which are represented:
  • Figure 1 : A schematic section of a cone mill according to the prior art;
  • Figure 2 : A perspective top view of the movable jaw according to the present invention;
  • Figure 3 : A schematic section of the attachment of the movable jaw of a cone crusher according to the invention;
  • Figure 4 : A sectional view along line VV of the figure 3 .

Comme le montre la figure 3, la mâchoire mobile 4 est disposée sur la tête conique 5 et repose classiquement, comme le montre la figure 1, sur la partie inférieure large de la tête conique. Son serrage dans cette position s'effectue au moyen d'un élément de blocage constitué par une vis en deux parties, un plateau de blocage 16 dont le diamètre est au moins égal au diamètre extérieur, à sa partie supérieure, du cône formé par la mâchoire 4 et un goujon fileté 13 solidarisé au plateau par des vis 17.As shown in figure 3 , the movable jaw 4 is disposed on the conical head 5 and is classically resting, as shown in FIG. figure 1 , on the broad lower part of the conical head. Its tightening in this position is effected by means of a locking element consisting of a two-part screw, a locking plate 16 whose diameter is at least equal to the outer diameter, at its upper part, of the cone formed by the jaw 4 and a threaded stud 13 secured to the plate by screws 17.

Un cache de protection 23 des têtes des vis 17 est également prévu sur le plateau de blocage et fixé simplement sur celui-ci avec une vis.A protective cover 23 of the screw heads 17 is also provided on the locking plate and simply fixed to it with a screw.

Comme on l'a indiqué plus haut pour l'art antérieur, la rotation de la mâchoire 4, pendant le fonctionnement, par rapport à la tête 5, procure un auto serrage de la pièce 16, 13 et permet ainsi de maintenir un serrage adéquat malgré l'usure de la mâchoire.As indicated above for the prior art, the rotation of the jaw 4, during operation, relative to the head 5, provides a self-tightening of the part 16, 13 and thus allows to maintain adequate clamping despite wear of the jaw.

Toutefois, en fonctionnement, lorsque la mâchoire 4 glisse sur la tête malgré le serrage important, elle glisse également par rapport au plateau de blocage 16 dans sa rotation. Celui-ci ne transmet alors le couple de rotation au goujon 13 par les vis 17 que partiellement.However, in operation, when the jaw 4 slides over the head despite significant tightening, it also slides relative to the locking plate 16 in its rotation. It then transmits the torque to the stud 13 by the screws 17 only partially.

Pour assurer la solidarisation de la mâchoire 4 et du plateau de blocage 16, des tenons 14 sont prévus sur la périphérie interne de la mâchoire 4 au niveau de son ouverture supérieure. Des encoches 15 de forme correspondante et en nombre égal sont pratiquées sur la périphérie du plateau de blocage 16. Encoches et tenons sont régulièrement répartis sur lesdites périphéries de manière à engrener les uns dans les autres.To secure the jaw 4 and the locking plate 16, tenons 14 are provided on the inner periphery of the jaw 4 at its upper opening. 15 shaped notches corresponding and in equal number are made on the periphery of the locking plate 16. Notches and tenons are regularly distributed over said peripheries so as to mesh with each other.

De cette manière, lors du fonctionnement du broyeur, une rotation de la mâchoire 4 va entraîner une rotation de l'élément de blocage 16 et un autoserrage du couple plateau de blocage 16 - goujon 13, donc un autoserrage de la mâchoire 4 sur la tête 5.In this way, during the operation of the mill, a rotation of the jaw 4 will cause a rotation of the locking element 16 and a self-tightening of the locking plate torque 16 - pin 13, so a self-tightening of the jaw 4 on the head 5.

Le même système de tenons et encoches peut être appliqué au broyeur giratoire, pour solidariser l'écrou de serrage et la mâchoire.The same system of tenons and notches can be applied to the rotary crusher, to secure the clamping nut and the jaw.

La figure 4 montre une coupe du système au niveau de l'ouverture du cône formant la mâchoire 4. Dans l'exemple représenté, quatre tenons et quatre encoches sont prévus. Mais il peut bien entendu être prévu un nombre de tenons et d'encoches inférieur ou supérieur.The figure 4 shows a section of the system at the opening of the cone forming the jaw 4. In the example shown, four tenons and four notches are provided. But it can of course be expected a number of tenons and notches lower or higher.

Claims (2)

  1. System for securing the movable jaw on a conical head of a conical or gyratory stone crusher, comprising a bowl, surmounted by a hopper for supplying material to be crushed, a fixed truncated conical jaw mounted coaxially of the bowl, a crushing head mounted on a principal shaft coaxial to the fixed jaw, whose geometric axis makes an acute angle with that of the drive shaft so as to communicate to the head a nutatory movement when the eccentric turns, and a conical movable jaw having a circular opening at its summit, mounted on the head and gripped on the latter by means of a blocking element secured to the head and bearing on the summit of the movable jaw,
    characterized in that said element (16) has on its external periphery notches (15) directed radially outwardly and regularly spaced about said periphery, and that the movable jaw (4) has on its internal periphery at the level of its opening, lugs directed radially inwardly, regularly spaced about said periphery and in number equal to said notches (15), the lugs penetrating in the assembled condition into said notches so as to secure the blocking element (16) and the movable jaw (4) in rotation during operation of the crusher.
  2. System for securement of the movable jaw according to claim 1, characterized in that the number of lugs and notches is equal to four.
EP03796119A 2002-12-20 2003-12-01 System for fixing the mobile jaw of a cone or giratory crusher Expired - Lifetime EP1581344B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0216270A FR2848880B1 (en) 2002-12-20 2002-12-20 SYSTEM FOR ATTACHING THE MOBILE JAW OF A CONE OR GYRATORY MILL
FR0216270 2002-12-20
PCT/FR2003/003540 WO2004065012A1 (en) 2002-12-20 2003-12-01 System for fixing the mobile jaw of a cone or giratory crusher

Publications (2)

Publication Number Publication Date
EP1581344A1 EP1581344A1 (en) 2005-10-05
EP1581344B1 true EP1581344B1 (en) 2009-01-14

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EP03796119A Expired - Lifetime EP1581344B1 (en) 2002-12-20 2003-12-01 System for fixing the mobile jaw of a cone or giratory crusher

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US (1) US7216823B2 (en)
EP (1) EP1581344B1 (en)
CN (1) CN100374207C (en)
AT (1) ATE420725T1 (en)
AU (1) AU2003298379B2 (en)
BR (2) BRPI0317371B1 (en)
CA (1) CA2511055C (en)
DE (1) DE60325898D1 (en)
ES (1) ES2320878T3 (en)
FR (1) FR2848880B1 (en)
MX (1) MXPA05006506A (en)
PT (1) PT1581344E (en)
WO (1) WO2004065012A1 (en)
ZA (1) ZA200504819B (en)

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CN2445808Y (en) * 2000-08-13 2001-09-05 山东煤矿莱芜机械厂 Driving cone parts of inertia gyrotary crusher

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ZA200504819B (en) 2006-04-26
WO2004065012A1 (en) 2004-08-05
EP1581344A1 (en) 2005-10-05
MXPA05006506A (en) 2006-02-17
ES2320878T3 (en) 2009-05-29
CA2511055A1 (en) 2004-08-05
BRPI0317371B1 (en) 2018-10-16
AU2003298379B2 (en) 2009-03-19
US20060113414A1 (en) 2006-06-01
DE60325898D1 (en) 2009-03-05
CN100374207C (en) 2008-03-12
FR2848880B1 (en) 2005-02-04
US7216823B2 (en) 2007-05-15
AU2003298379A1 (en) 2004-08-13
PT1581344E (en) 2009-02-27
BR0317371A (en) 2005-11-16
FR2848880A1 (en) 2004-06-25
CN1741854A (en) 2006-03-01
ATE420725T1 (en) 2009-01-15
CA2511055C (en) 2010-08-10

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