ES2222090B1

ES2222090B1 - TOOTH, PORTABLE, AND SET OF TOOTH AND PORTABLE, TO MACHINE TO MOVE MATERIALS SUCH AS EARTH AND STONES.

Info

Publication number: ES2222090B1
Application number: ES200301283A
Authority: ES
Inventors: Jose Lopez Almendros
Original assignee: Metalogenia Patentes SL
Current assignee: Metalogenia Patentes SL
Priority date: 2003-05-29
Filing date: 2003-05-29
Publication date: 2007-07-01
Anticipated expiration: 2023-05-29
Also published as: WO2004106646A1; ES2222090A1

Abstract

Diente, portadientes y un conjunto de diente y portadientes con configuraciones de mutuo encaje dispuestas entre el diente y el portadientes. Dicho diente presenta en sus orejas de acoplamiento en el portadientes una configuración característica que se complementa con la forma del rebajo para alojar las orejas del diente dispuesto en el portadientes.Tooth, tooth holders and a set of tooth and tooth holders with mutually fitting configurations arranged between the tooth and the tooth holder. Said tooth has in its coupling ears in the tooth holder a characteristic configuration that is complemented with the shape of the recess to accommodate the ears of the tooth disposed in the tooth holder.

Description

Diente, portadientes, y conjunto de diente y portadientes, para máquina de mover materiales tales como tierra y piedras.Tooth, tooth holder, and tooth set and tooth holder, for machine moving materials such as earth and stones

Field of the invention

La presente invención concierne en general a un diente, un portadientes y un conjunto de diente y portadientes para una máquina de mover materiales tales como tierra y piedras, y más en particular a unas configuraciones de mutuo encaje dispuestas en el diente y el portadientes.The present invention generally concerns a tooth, a tooth holder and a set of tooth and tooth holder for a machine to move materials such as earth and stones, and more in particular to configurations of mutual fit arranged in The tooth and the tooth holder.

Prior art

Las máquinas de mover materiales tales como tierra y piedras, es decir, excavadoras y similares, comprenden un cazo o cuchara móvil provista de un borde o filo destinado a incidir en los materiales a mover, tales como tierra, piedras, gravas y similares. Usualmente el mencionado filo de la cuchara está equipado con una pluralidad de dientes, los cuales están sometidos a unas duras condiciones de trabajo que provocan su desgaste y/o su rotura, por lo que deben ser reemplazados con cierta frecuencia. Para facilitar el reemplazo de los dientes es conocido incorporar un adaptador o portadientes fijado al filo de la cuchara y adaptado para recibir y retener de manera amovible el diente. Para ello, el citado portadientes comprende una configuración de fijación trasera para su fijación a dicho borde de la cuchara de dicha máquina, una prominencia o nariz delantera para encajar en una cavidad o caja trasera de un diente, y unos rebajos para recibir unas orejas que se extienden hacia atrás desde unos laterales de dicha caja de dicho diente. De manera convencional, dichos rebajos del portadientes tienen una cara de fondo a la que queda enfrentada una cara interior de dichas orejas del diente, una cara exterior abierta correspondiente a una cara exterior de las orejas, y unas caras estrechas superior e inferior a las cuales quedan enfrentadas unas correspondientes caras estrechas superior e inferior de configuración complementaria de las orejas del diente. Para bloquear de manera liberable el diente acoplado al portadientes están incorporados unos medios de bloqueo, los cuales incluyen generalmente un alojamiento para un pasador definido en cooperación por el diente y el portadientes, un pasador para ser alojado en dicho alojamiento y un retenedor para retener el pasador.The machines move materials such as earth and stones, that is, excavators and the like, comprise a mobile dipper or spoon provided with an edge or edge intended for influence materials to move, such as earth, stones, gravels and the like. Usually the aforementioned bucket edge is equipped with a plurality of teeth, which are subjected to harsh working conditions that cause wear and / or its breakage, so they must be replaced with some frequency. To facilitate the replacement of teeth it is known to incorporate an adapter or adapter attached to the bucket's edge and adapted to receive and removably remove the tooth. To do this, the said tooth holder comprises a rear fixing configuration for fixing to said edge of the spoon of said machine, a prominence or front nose to fit in a cavity or box rear of a tooth, and some recesses to receive ears that they extend backwards from sides of said box of said tooth Conventionally, said recesses of the toothpicks have a bottom face that faces a inner face of said teeth of the tooth, an outer face open corresponding to an outer face of the ears, and some narrow upper and lower faces facing each other corresponding upper and lower narrow faces of complementary configuration of the ears of the tooth. To block releasably the tooth coupled to the tooth holder are built-in locking means, which include generally a housing for a pin defined in cooperation by the tooth and the toothpick, a pin to be housed in said housing and a retainer to retain the pin.

Las mencionadas orejas del diente, las cuales van encajadas en los correspondientes rebajos de portadientes, contribuyen a controlar unas fuerzas a las que está sometido el diente trasladando dichas fuerzas al portadientes. Un inconveniente es que varios tipos de esfuerzos tienden a doblar las orejas hacia fuera, lo que disminuye su función como control de fuerzas y constituye un riesgo de rotura para las orejas.The mentioned ears of the tooth, which they are embedded in the corresponding recesses of tooth holders, they contribute to control forces to which the tooth transferring said forces to the holder. An inconvenience is that several types of efforts tend to bend the ears towards outside, which decreases its function as force control and It constitutes a risk of rupture for the ears.

La patente US-A-5386653 describe un conjunto de diente y portadientes que tiene la configuración general arriba descrita, y en el que a través del diente y del portadientes está definido un plano longitudinal central, siendo las caras interior y exterior de las orejas substancialmente paralelas a dicho plano longitudinal central. Las mencionadas caras estrechas superior e inferior de cada oreja forman un ángulo entre sí, de manera que la cara interior de las orejas, es decir, la cara más próxima al citado plano longitudinal central, es mayor que la cara exterior de las mismas. Las caras estrechas superior e inferior de cada rebajo están configuradas de manera complementaria. Esta disposición contribuye a impedir el indeseado efecto de dobladura de las orejas. Sin embargo, la configuración plana de las mencionadas caras estrechas superior e inferior hace que superficie de contacto entre las caras estrechas superior e inferior del diente y el portadientes sea relativamente pequeña, lo que no evita suficientemente que se produzca un efecto de deformación plástica o "matage" durante el trabajo.The patent US-A-5386653 describes a set of tooth and tooth holder that has the general configuration above described, and in which through the tooth and the tooth holder is defined a central longitudinal plane, the inner faces being and outside of the ears substantially parallel to said plane central longitudinal The above narrow faces above and bottom of each ear form an angle to each other, so that the inner face of the ears, that is, the face closest to the cited central longitudinal plane, is larger than the outer face of the same. The narrow upper and lower faces of each recess They are configured in a complementary way. This arrangement It helps prevent the unwanted effect of bending the ears. However, the flat configuration of the mentioned faces narrow upper and lower makes contact surface between the narrow upper and lower faces of the tooth and the tooth holder is relatively small, which does not prevent enough that a plastic deformation effect or "matage" during work.

El objetivo de la presente invención es el de dar solución a los anteriores inconvenientes mediante la aportación de un diente, un portadientes y un conjunto de diente y portadientes para una máquina de mover materiales tales como tierra y piedras, provistos de unas configuraciones de mutuo encaje entre el diente y el portadientes que impidan el efecto de dobladura hacia fuera de las orejas y disminuyan el efecto de deformación plástica o "matage".The objective of the present invention is to to solve the previous inconveniences through the contribution of a tooth, a tooth holder and a set of tooth and tooth holders for a machine to move materials such as earth and stones, provided with configurations of mutual fit between the tooth and the tooth bar that prevent the bending effect towards outside the ears and decrease the effect of plastic deformation or "matage".

Brief exposition of the invention

El anterior y otros objetivos se alcanzan, de acuerdo con la presente invención, mediante la aportación de un diente, para ser conectado a un portadientes de una máquina de mover materiales tales como tierra y piedras, del tipo que comprende una punta delantera, una cavidad o caja trasera para recibir una prominencia o nariz que sobresale de una parte delantera de dicho portadientes, y unas orejas que se extienden hacia atrás desde unos laterales de dicha caja del diente y que encajan en unos rebajos del portadientes. Las citadas orejas tienen al menos una cara interior enfrentada a un fondo del correspondiente rebajo del portadientes, una cara exterior correspondiente a una cara abierta del correspondiente rebajo del portadientes, y unas caras estrechas superior e inferior las cuales quedan enfrentadas a, y retenidas por, unas caras estrechas superior e inferior, de configuración complementaria, del rebajo. Las caras estrechas superior e inferior de las orejas, vistas en sección transversal, describen unos arcos de circunferencia dispuestos de manera tal que la distancia entre unos extremos exteriores de dichos arcos superior e inferior es más corta que la distancia entre unos extremos interiores de dichos arcos superior e inferior.The above and other objectives are achieved, of according to the present invention, by providing a tooth, to be connected to a toothpick of a moving machine materials such as earth and stones, of the type comprising a front tip, a cavity or back box to receive a prominence or nose protruding from a front of said toothpicks, and ears that extend backwards from about sides of said tooth box and which fit into recesses of the toothpick. The aforementioned ears have at least one face interior facing a bottom of the corresponding recess of the tooth holder, an outer face corresponding to an open face of the corresponding recess of the tooth bar, and narrow faces upper and lower which are faced with, and retained by, narrow upper and lower faces, configuration complementary, from the recess. The narrow upper and lower faces of the ears, seen in cross section, describe arcs of circumference arranged in such a way that the distance between outer ends of said upper and lower arches is more cuts the distance between inner ends of said upper and lower arches.

Con esta construcción, las orejas quedan atrapadas en los correspondientes rebajos del portadientes impidiendo la tendencia a doblarse hacia fuera de las orejas y, al mismo tiempo, la citada configuración de sección transversal en forma de arco de circunferencia aumenta la superficie de contacto entre el diente y el portadientes y, con ello, disminuye el efecto de deformación plástica o "matage".With this construction, the ears remain caught in the corresponding recesses of the holder preventing the tendency to bend out of the ears and, at same time, the aforementioned cross section configuration in arc circumference shape increases the contact surface between the tooth and the tooth holder and, with it, the effect diminishes of plastic deformation or "matage".

La presente invención también aporta un portadientes y un conjunto de diente y portadientes caracterizados por la mencionada configuración de sección transversal en forma de arco de circunferencia de las caras estrechas superior e inferior de las orejas del diente, las cuales están enfrentada a una configuración de sección transversal complementaria en forma de arco de circunferencia de las caras estrechas superior e inferior de los rebajos del portadientes.The present invention also provides a tooth holders and a set of tooth and tooth holders characterized by the aforementioned cross-sectional configuration in the form of circumference arc of the upper and lower narrow faces of the ears of the tooth, which are facing a complementary cross section configuration in the form of circumference arc of the upper and lower narrow faces of the recess of the holder.

En cualquier caso, las caras estrechas superior e inferior de las orejas y de los rebajos pueden ser de curvatura convexa o cóncava. Cuando la curvatura es convexa, los citados arcos de circunferencia de las secciones transversales correspondientes a ambas caras estrechas superior e inferior de las orejas y de los rebajos pueden tener un centro común o centros independientes separados, y tanto en uno como en otro caso, dichos centros están sobre una línea imaginaria definida por dichos extremos interiores de los arcos de las caras estrechas superior e inferior de las orejas, o sobre una línea imaginaria definida por dichos extremos interiores de los arcos de las caras estrechas superior e inferior de los rebajos, o en las proximidades de dichas líneas imaginarias o en una zona más interior a partir de las mismas. Cuando las caras estrechas superior e inferior de las orejas y los rebajos son de curvatura cóncava, los centros de los arcos de circunferencia están sobre una línea imaginaria definida por dichos extremos exteriores de los arcos de las caras estrechas superior e inferior de las orejas, o sobre una línea imaginaria definida por dichos extremos exteriores de los arcos de las caras estrechas superior e inferior de los rebajos, en las proximidades de dichas líneas imaginarias o en una zona más exterior a partir de las mismas.In any case, the narrow upper faces and lower ears and recesses can be curvature convex or concave. When the curvature is convex, those cited circumference arcs of the cross sections corresponding to both upper and lower narrow faces of the ears and recesses may have a common center or centers separate independents, and in both cases centers are on an imaginary line defined by said inner ends of the arches of the upper narrow faces e lower ears, or on an imaginary line defined by said inner ends of the arcs of the narrow faces upper and lower recesses, or in the vicinity of said imaginary lines or in a more interior area from same. When the upper and lower narrow faces of the ears and recesses are concave curvature, the centers of the circumference arcs are on a defined imaginary line by said outer ends of the arcs of the narrow faces upper and lower ears, or on an imaginary line defined by said outer ends of the arcs of the faces narrow upper and lower recesses, in the vicinity of said imaginary lines or in a more outer area from the same.

Cuanto menor sea el radio de los arcos de circunferencia más pronunciada será la curvatura de las caras estrechas superior e inferior de las orejas, y cuanto más próximos estén los centros a las mencionadas líneas imaginarias menos diferencia habrá entre las distancias entre los extremos exteriores e interiores de los arcos. Así, mediante la elección de las posiciones de los centros y las longitudes de los radios de dichos arcos se puede adaptar el diseño de las configuraciones de mutuo encaje dispuestas entre diente y portadientes a diferentes condiciones de trabajo o aplicaciones.The smaller the radius of the arcs of most pronounced circumference will be the curvature of the faces narrow upper and lower ears, and the closer are the centers to the mentioned imaginary lines less difference will be between the distances between the outer ends and interiors of the arches. Thus, by choosing the center positions and radius lengths of said arches can be adapted the design of mutual configurations lace arranged between tooth and tooth holder to different working conditions or applications.

Brief description of the drawings

Las anteriores y otras características y ventajas resultarán más evidentes a partir de la siguiente descripción detallada de unos ejemplos de realización con referencia a los dibujos adjuntos, en los que:The above and other features and advantages will be more evident from the following detailed description of some embodiments with reference to the attached drawings, in which:

la Fig. 1 es una vista en alzado lateral de un diente y un portadientes de acuerdo con un ejemplo de realización de la presente invención, en una posición desacoplada;Fig. 1 is a side elevation view of a tooth and a toothpick according to an embodiment of the present invention, in an uncoupled position;

la Fig. 2 es una vista en alzado lateral del diente y el portadientes de la Fig. 1 en una posición acoplada;Fig. 2 is a side elevation view of the tooth and tooth holder of Fig. 1 in a coupled position;

la Fig. 3 es una vista en sección transversal tomada por el plano III-III de la Fig. 2;Fig. 3 is a cross-sectional view taken by plane III-III of Fig. 2;

la Fig. 4 es un detalle ampliado de la vista de la Fig. 3;Fig. 4 is an enlarged detail of the view of Fig. 3;

la Fig. 5 es un detalle ampliado de un vista en sección transversal de otro ejemplo de realización de la invención; yFig. 5 is an enlarged detail of a view in cross section of another embodiment of the invention; Y

la Fig. 6 es un detalle ampliado de un vista en sección transversal de todavía otro ejemplo de realización de la invención.Fig. 6 is an enlarged detail of a view in cross section of yet another exemplary embodiment of the invention.

Detailed description of some embodiments

Haciendo referencia en primer lugar a las Figs. 1 y 2, el conjunto de diente y portadientes para máquina de mover materiales tales como tierra y piedras de acuerdo con la presente invención es del tipo que comprende un diente 10 provisto de una punta 13 delantera, y un portadientes 20 provisto de unas configuraciones de fijación 23 traseras para su fijación a una borde de una cuchara de una excavadora o similar (no mostrado). En la parte trasera del diente 10 se abre una cavidad o caja 11 (mostrada en líneas de trazos en la Fig. 1) en la que encaja una prominencia o nariz 21 que sobresale de una parte delantera del portadientes 20, y desde unos laterales de dicha caja 11 del diente 10 se extienden hacia atrás unas orejas 12 que encajan en unos rebajos 22 del portadientes 20. Para bloquear de manera liberable a los diente y portadientes 1, 2 mutuamente acoplados (Fig. 2) están previstos unos medios de bloqueo de tipo convencional, por lo que los mismos no están mostrados en las figuras y su descripción se ha omitido.Referring first to Figs. 1 and 2, the set of tooth and tooth holder for moving machine materials such as earth and stones in accordance with this invention is of the type comprising a tooth 10 provided with a front tip 13, and a tooth holder 20 provided with 23 rear fixing configurations for fixing to an edge of a bucket of an excavator or similar (not shown). In the rear of tooth 10 opens a cavity or box 11 (shown in dashed lines in Fig. 1) in which a prominence fits or nose 21 protruding from a front part of the tooth holder 20, and from the sides of said box 11 of the tooth 10, extend back ears 12 that fit in recesses 22 of the tooth holder 20. To releasably block the teeth and mutually coupled holders 1, 2 (Fig. 2) are provided conventional locking means, so that they they are not shown in the figures and their description has been omitted

Tal como se muestra mejor en las Figs. 3 y 4, cada una de dichas orejas 12 tiene una cara interior 12a enfrentada a un fondo 22a del correspondiente rebajo 22, una cara exterior 12b correspondiente a una cara abierta 22b del correspondiente rebajo 22 y unas caras estrechas superior e inferior 12c, 12d enfrentadas a y retenidas por unas caras estrechas superior e inferior 22c, 22d, de configuración complementaria, del rebajo 22. La cara interior 12a de la oreja, enfrentada a un fondo 22a del correspondiente rebajo 22 del portadientes se muestra con superficie plana, pudiendo también presentar otros tipos de superficie tal como curvada, disponiendo siempre el fondo 22a del rebajo una superficie complementaria a la de la cara interior 12a de la oreja. Las mencionadas caras estrechas superior e inferior 12c, 12d de las orejas 12 son redondeadas, y describen, vistas en sección transversal, unos arcos de circunferencia dispuestos de manera tal que la distancia Fe entre unos extremos exteriores de dichos arcos superior e inferior es más corta que la distancia Fi entre unos extremos interiores de dichos arcos superior e inferior. Las caras estrechas superior e inferior 22c, 22d de los rebajos 22 tienen una configuración complementaria y describen, vistas en sección transversal, unos arcos de circunferencia dispuestos de manera tal que la distancia De entre unos extremos exteriores de dichos arcos superior e inferior es más corta que la distancia Di entre unos extremos interiores de dichos arcos superior e inferior. Además, los mencionados arcos de circunferencia superiores de las orejas 12 y rebajos 22 son concéntricos, y también son concéntricos los arcos de circunferencia inferiores de las orejas 12 y rebajos 22.As best shown in Figs. 3 and 4, each of said ears 12 has an inner face 12a facing each other to a bottom 22a of the corresponding recess 22, an outer face 12b corresponding to an open face 22b of the corresponding recess 22 and narrow upper and lower faces 12c, 12d facing each other a and retained by narrow upper and lower faces 22c, 22d, of complementary configuration, of the recess 22. The inner face 12th of the ear, facing a bottom 22a of the corresponding recess 22 of the tooth holder is shown with a flat surface, may also present other types of surface such as curved, always providing the bottom 22a of the recess a surface complementary to that of the inner face 12a of the ear. The mentioned narrow upper and lower faces 12c, 12d of the ears 12 are rounded, and describe, sectional views transverse, circumference arcs arranged in such a way that the distance Fe between outer ends of said arcs upper and lower is shorter than the distance Fi between inner ends of said upper and lower arches. The faces narrow upper and lower 22c, 22d of the recesses 22 have a complementary configuration and describe, section views transverse, circumference arcs arranged in such a way that the distance between outer ends of said arches upper and lower is shorter than the distance Di between inner ends of said upper and lower arches. In addition, the mentioned upper circumference arches of the ears 12 and recesses 22 are concentric, and the arcs are concentric as well lower circumference of the ears 12 and recesses 22.

En el ejemplo de realización mostrado en las Figs. 1 a 4, ambas caras estrechas superior e inferior 12c, 12d de las orejas 12 son de curvatura convexa. Además, los arcos de circunferencia correspondientes a ambas caras estrechas superior e inferior 12c, 12d de las orejas 12 tienen unos centros C1, C2 independientes, separados, y de manera análoga los arcos de circunferencia correspondientes a las caras estrechas superior e inferior 22c, 22d de los rebajos 22 tienen los mismos centros C1, C2 independientes, separados. Los mencionados centros C1, C2 están, en este ejemplo de realización, sobre una línea imaginaria definida por dichos extremos interiores de los arcos de las caras estrechas superior e inferior 12c, 12d de las orejas 12, o sobre una línea imaginaria definida por dichos extremos interiores de los arcos de las caras estrechas superior e inferior 22c, 22d de los rebajos 22, en las proximidades de dichas líneas imaginarias. La cara exterior 12b de las orejas 12 está substancialmente enrasada con dicha cara abierta 22b de los rebajos 22 del portadientes 20. Dicha cara exterior 12b también puede presentar cualquier otro tipo de superficie no enrasada con la cara abierta 22b de los rebajos 22 del portadientes.In the exemplary embodiment shown in the Figs. 1 to 4, both upper and lower narrow faces 12c, 12d of ears 12 are convex curvature. In addition, the arches of circumference corresponding to both narrow faces superior e lower 12c, 12d of the ears 12 have centers C1, C2 independent, separate, and similarly the arcs of circumference corresponding to the upper narrow faces e bottom 22c, 22d of recesses 22 have the same centers C1, C2 independent, separated. The mentioned centers C1, C2 are, in this exemplary embodiment, on a defined imaginary line by said inner ends of the arcs of the narrow faces upper and lower 12c, 12d of ears 12, or on a line imaginary defined by said inner ends of the arcs of the narrow upper and lower faces 22c, 22d of the recesses 22, in the vicinity of these imaginary lines. Outer face 12b of the ears 12 is substantially flush with said face open 22b of the recesses 22 of the holder 20. Said face exterior 12b can also present any other type of surface not flush with the open face 22b of the recesses 22 of the toothpick

En el ejemplo de realización mostrado en la Fig. 4, ambas caras estrechas superior e inferior 12c, 12d de las orejas 12 son también de curvatura convexa. Sin embargo, aquí los arcos de circunferencia correspondientes a ambas caras estrechas superior e inferior 12c, 12d de las orejas 12 tienen un centro C3 común y los arcos de circunferencia correspondientes a las caras estrechas superior e inferior 22c, 22d de los rebajos 22 también tienen el mismo centro común C3. Además, en este ejemplo de realización, el centro mencionado común C3 está en una zona del portadientes más interior a partir de una línea imaginaria definida por dichos extremos interiores de los arcos de las caras estrechas superior e inferior 12c, 12d de las orejas 12, de una sobre una línea imaginaria definida por dichos extremos interiores de los arcos de las caras estrechas superior e inferior 22c, 22d de los rebajos 22. También aquí la cara exterior 12b de las orejas 12 está substancialmente enrasada con dicha cara abierta 22b de los rebajos 22 del portadientes 20.In the exemplary embodiment shown in Fig. 4, both narrow upper and lower faces 12c, 12d of the ears 12 are also convex curvature. However, here the arches of circumference corresponding to both narrow faces superior e lower 12c, 12d of the ears 12 have a common center C3 and the circumference arcs corresponding to the narrow faces upper and lower 22c, 22d of recesses 22 also have the same common center C3. In addition, in this exemplary embodiment, the common mentioned center C3 is in an area of the toothpick holder more interior from an imaginary line defined by said inner ends of the arches of the upper narrow faces e bottom 12c, 12d of ears 12, one on a line imaginary defined by said inner ends of the arcs of the upper and lower narrow faces 22c, 22d of the recesses 22. Also here the outer face 12b of the ears 12 is substantially flush with said open face 22b of the recesses 22 of the tooth holder 20.

Aunque no está mostrado en las figuras, la presente invención prevé que ambas caras estrechas superior e inferior 12c, 12d de las orejas 12 sean de curvatura cóncava. En este caso, los centros de los arcos de circunferencia correspondientes a las caras estrechas superior e inferior 12c, 12d de las orejas 12, o a las caras estrechas superior e inferior 22c, 22d de las rebajos 22, vistas en sección transversal, están sobre una línea imaginaria definida por los extremos exteriores de los arcos de las caras estrechas superior e inferior 12c, 12d de las orejas 12, o sobre una línea imaginaria definida por los extremos exteriores de los arcos de las caras estrechas superior e inferior 22c, 22d de los rebajos 22, en las proximidades de dichas líneas imaginarias, o en una zona más exterior a partir de las mismas.Although not shown in the figures, the present invention provides that both narrow faces superior e lower 12c, 12d of the ears 12 are concavely curved. In this case, the centers of the circumference arcs corresponding to the upper and lower narrow faces 12c, 12d from ears 12, or to the upper and lower narrow faces 22c, 22d of the recesses 22, seen in cross section, are on an imaginary line defined by the outer ends of the arcs of the upper and lower narrow faces 12c, 12d of the ears 12, or on an imaginary line defined by the ends outer arches of the upper and lower narrow faces 22c, 22d of the recesses 22, in the vicinity of said lines imaginary, or in a more external area from them.

En el ejemplo de realización mostrado en la Fig. 6, los centros y los radios de los arcos de circunferencia correspondientes a las caras estrechas superiores e inferiores 12c, 12d; 22c, 22d de las orejas 12 y los rebajos 22, respectivamente, están dimensionados y dispuestos de manera similar a la descrita en relación con la Fig. 5. Sin embargo, aquí dicha cara exterior 12b de las orejas 12 está separada hacia fuera respecto a la cara abierta 22b del correspondiente rebajo 22, y unas proyecciones laterales 12e de las orejas 12 están sobrepuestas a una superficie exterior 22e adyacente a la cara abierta 22b del portadientes 20.In the exemplary embodiment shown in Fig. 6, the centers and radii of the circumference arcs corresponding to the upper and lower narrow faces 12c, 12d; 22c, 22d of the ears 12 and the recesses 22, respectively, They are sized and arranged in a manner similar to that described in relation to Fig. 5. However, here said outer face 12b of the ears 12 is separated outward from the open face 22b of the corresponding recess 22, and lateral projections 12e of the ears 12 are superimposed on an outer surface 22e adjacent to the open face 22b of the tooth holder 20.

Los ejemplos de realización descritos e ilustrados tienen un carácter meramente ilustrativo y no limitativo del alcance de la presente invención, y un experto en la materia podría introducir cambios, variaciones y combinaciones sin salirse del alcance de la presente invención según está definido en las reivindicaciones adjuntas.The described embodiment examples e illustrated are merely illustrative and not limiting of the scope of the present invention, and one skilled in the art could introduce changes, variations and combinations without leaving of the scope of the present invention as defined in the attached claims.

Por ejemplo, aunque en los ejemplos de realización mostrados en las figuras, las caras interiores 12a de las orejas 12 son planas y substancialmente paralelas entre sí, y las caras de fondo de los rebajos 22 son asimismo planas y paralelas para proporcionar una configuración complementaria, las configuraciones de mutuo encaje entre las orejas 12 y los rebajos 22 descritas más arriba son igualmente compatibles con otras configuraciones y disposiciones de las orejas 12 y rebajos 22. Así, por ejemplo, la cara interior 12a de las orejas 12 podría ser curvada y dicho fondo 22a del correspondiente rebajo 22 tener una curvatura complementaria, o las caras interiores 12a de ambas orejas 12 podrían ser rectas pero estar inclinadas la una respecto a la otra y dichos fondos 22a de los correspondientes rebajos 22 estar inclinados el uno respecto al otro de manera complementaria. También, las caras interiores 12a de ambas orejas 12 podrían tener, vistas en sección transversal, unas respectivas configuraciones en ángulo, con unas puntas dirigidas hacia fuera, y dichos fondos 22a de los correspondientes rebajos 22 tener, vistos en sección transversal, unas respectivas configuraciones en ángulo con unas puntas dirigidas hacia fuera complementarias.For example, although in the examples of embodiment shown in the figures, the inner faces 12a of ears 12 are flat and substantially parallel to each other, and the bottom faces of the recesses 22 are also flat and parallel to provide a complementary configuration, the configurations of mutual fit between ears 12 and recesses 22 described above are equally compatible with other configurations and arrangements of the ears 12 and recesses 22. Thus, for example, the inner face 12a of the ears 12 could be curved and said bottom 22a of the corresponding recess 22 have a complementary curvature, or the inner faces 12a of both ears 12 could be straight but be inclined the one with respect to the other and said funds 22a of the corresponding rebates 22 be inclined towards each other in a complementary way. Also, the inner faces 12a of both ears 12 could have, cross-sectional views, respective configurations in angle, with points directed outward, and said bottoms 22a of the corresponding recesses 22 have, seen in section transverse, respective angled configurations with some complementary directed outward tips.

Claims

1. Tooth, to be connected to a toothpick of a machine to move materials such as earth and stones, of the type comprising a front tip (13), a cavity or back box (11) to receive a prominence or nose (21) protruding from a front part of said toothpick (20), and ears (12) extending rearwardly from one side of said tooth box (11) of the tooth (10) and which fit into recesses (22) of the toothpick (22) 20), said ears (12) having at least one inner face (12a) facing a bottom (22a) of the corresponding recess (22) of the tooth holder (20), an outer face (12b) corresponding to an open face (22b) of the corresponding recess (22) of the holder (20), and narrow upper and lower faces (12c, 12d) which are faced with, and retained by, narrow upper and lower faces (22c, 22d) of the recess (22) of complementary configuration, characterized in that, said upper and lower narrow faces ( 12c, 12d) of the ears (12), seen in cross section, describe circumferential arcs arranged such that the distance between outer ends of said upper and lower arches is shorter than the distance between inner ends of said upper and lower arches.

2. Tooth according to claim 1, characterized in that both upper and lower narrow faces (12c, 12d) of the ears (12) are convexly curved.

3. Tooth, according to claim 2, characterized in that the circumference arcs of both upper and lower narrow faces (12c, 12d) of the ears (12) have a common center.

4. Tooth according to claim 2 characterized in that the circumference arcs of both upper and lower narrow faces (12c, 12d) of the ears (12) have separate independent centers.

5. Tooth, according to claim 3 or 4, characterized in that said centers of the circumference arcs are on an imaginary line defined by said inner ends of the arches of the upper and lower narrow faces (12c, 12d) of the ears (12), in the vicinity of said imaginary line or in a more interior area from it.

6. Tooth, according to claim 1, characterized in that both upper and lower narrow faces (12c, 12d) of the ears (12) are concavely curved.

7. Tooth, according to claim 6, characterized in that said centers of the circumference arcs are on an imaginary line defined by said outer ends of the arches of the upper and lower narrow faces (12c, 12d) of the ears (12 ), in the vicinity of said imaginary line or in a more outer area from the
same.

8. Tooth according to any one of claims 1, 2 or 6, characterized in that said outer face (12b) of the ears (12) is substantially flush with an outer surface (22e) of the tooth holder (20) adjacent to the open face (22b) of the recesses (22).

9. Tooth according to any one of claims 1, 2 or 6, characterized in that said outer face (12b) of the ears (12) is separated outwardly with respect to the open face (22b) of the recess (22) , and lateral projections (12e) of the ears (12) are superimposed on an outer surface (22e) adjacent to the open face (22b) of the tooth bar (20).

10. Tooth according to any one of claims 1, 2 or 6, characterized in that said inner face (12a) of the ears (12) is flat.

11. Tooth according to any one of claims 1, 2 or 6, characterized in that said inner face (12a) of the ears (12) is curved.

12. Tooth, according to any one of claims 1, 2 or 6, characterized in that the inner faces (12a) of both ears (12) are mutually parallel.

13. Tooth, according to any one of claims 1, 2 or 6, characterized in that the inner faces (12a) of both ears (12) are inclined with respect to each other.

14. Holder, to be connected to a machine for moving materials such as earth and stones, of the type comprising a rear fixing configuration (23) for fixing to an edge of a spoon of said machine, a prominence or nose (21 ) front to fit into a cavity or box (11) rear of a tooth (10), and recesses (22) to receive ears (12) extending backwards from the sides of said box (11) of said tooth (10), said recesses (22) having a bottom face (22a) facing at least one inner face (12a) of said ears (12) of the tooth (10), an open face (22b) and some narrow upper and lower faces (22c, 22d) to which corresponding upper and lower narrow faces (12c, 12d) of complementary configuration of the ears (12) of the tooth (10) are facing and retained, locking means being provided for releasably blocking the tooth (10) coupled to the portadie ntes (20), characterized in that said upper and lower narrow faces (22c, 22d) of the recesses (22), seen in cross section, describe circumferential arcs arranged such that the distance between outer ends of said upper arcs and lower is shorter than the distance between inner ends of said upper and lower arches.

15. Holder, according to claim 14, characterized in that both narrow upper and lower faces (22c, 22d) of the recesses (12) are convex curvature.

16. Holder, according to claim 15, characterized in that the circumference arcs of the upper and lower narrow faces (22c, 22d) of the recesses (22) have a common center.

17. Holder, according to claim 15 characterized in that the circumference arcs of the upper and lower narrow faces (22c, 22d) of the recesses (22) have separate independent centers.

18. Holder, according to claim 16 or 17, characterized in that said centers of the circumference arcs are on an imaginary line defined by said interior ends of the arches of the upper and lower narrow faces (22c, 22d) of the recesses (22), in the vicinity of said imaginary line or in a more interior area from it.

19. Holder, according to claim 14, characterized in that both narrow upper and lower faces (22c, 22d) of the recesses (12) are of concave curvature.

20. Holder, according to claim 19, characterized in that said centers of the circumference arcs are on an imaginary line defined by said outer ends of the arches of the upper and lower narrow faces (22c, 22d) of the recesses (22 ), in the vicinity of said imaginary line or in a more external area from it.

21. Holder, according to any one of claims 14, 15 or 19, characterized in that said open face (22b) of the recesses (22) is substantially flush with said outer face (12b) of the ears (12) of the tooth (10)

22. Holder, according to any one of claims 14, 15 or 19, characterized in that said outer face (12b) of the ears (12) of the tooth (10) is separated outwardly from the open face (22b) of the recess (22), and an outer surface (22e) adjacent to the open face (22b) is covered by lateral projections (12e) of the ears (12).

23. Holder, according to any one of claims 14, 15 or 19, characterized in that said inner face (22a) of the recesses (22) is flat.

24. Holder, according to any one of claims 14, 15 or 19, characterized in that said inner face (22a) of the recesses (22) is curved.

25. Holder, according to any one of claims 14, 15 or 19, characterized in that the inner faces (22a) of both recesses (22) are mutually parallel.

26. Holder, according to any one of claims 14, 15 or 19, characterized in that the inner faces (22a) of both recesses (22) are inclined with respect to each other.

27. Set of tooth and toothpiece for machine to move materials such as earth and stones, of the type comprising a tooth (10) provided with a leading tip (13), and a tooth holder (20) provided with fixing configurations (23 ) rear for fixing to an edge of a bucket of an excavator or the like, said assembly including a cavity or box (11) open in the tooth (10) in which a prominence or nose (21) protruding from one part fits front of the tooth holder (20), and ears (12) extending backwards from the sides of said tooth box (11) (10) and which fit into recesses (22) of the tooth holder (20), said ears having said ears (12) at least one inner face (12a) facing a bottom (22a) of the corresponding recess (22), an outer face (12b) corresponding to an open face (22b) of the corresponding recess (22) and narrow upper faces and lower (12c, 12d) facing and retained by narrow faces s upper and lower (22c, 22d), of complementary configuration, of the recess (22), locking means being provided for releasably locking the mutually coupled teeth and tooth holders (1, 2), characterized in that said upper narrow faces and lower (12c, 12d) of the ears (12), seen in cross section, describe circumferential arcs arranged such that the distance between outer ends of said upper and lower arches is shorter than the distance between ends interiors of said upper and lower arches, and said upper and lower narrow faces (22c, 22d) of the recesses (22), seen in cross section, describe circumferential arcs arranged such that the distance between outer ends of said upper and lower arches is shorter than the distance between inner ends of said upper and lower arches, said arcs of circumference being superior ores of the ears (12) and concentric recesses (22), and the lower circumference arcs of the ears (12) and concentric recesses (22).

28. Assembly according to claim 27, characterized in that both upper and lower narrow faces (12c, 12d) of the ears (12) are convexly curved.

29. Set according to claim 28, characterized in that the circumference arcs of both upper and lower narrow faces (12c, 12d) of the ears (12) have a common center and the circumference arcs of the upper narrow faces e Lower (22c, 22d) of the recesses (22) have a common center.

30. Set according to claim 28 characterized in that the circumference arcs of both upper and lower narrow faces (12c, 12d) of the ears (12) have separate independent centers and the circumference arcs of the upper and lower narrow faces (22c, 22d) of the recesses (22) have separate independent centers.

31. Set according to claim 29 or 30, characterized in that said centers of the circumference arcs are on an imaginary line defined by said inner ends of the arches of the upper and lower narrow faces (12c, 12d) of the ears (12), or on an imaginary line defined by said inner ends of the arches of the upper and lower narrow faces (22c, 22d) of the recesses (22), in the vicinity of said imaginary lines or in a more interior area a from them.

32. Assembly according to claim 27, characterized in that both upper and lower narrow faces (12c, 12d) of the ears (12) are concavely curved.

33. Assembly according to claim 32, characterized in that said centers of the circumference arcs are on an imaginary line defined by said outer ends of the arches of the upper and lower narrow faces (12c, 12d) of the ears (12 ), or on an imaginary line defined by said outer ends of the arcs of the upper and lower narrow faces (22c, 22d) of the recesses (22), in the vicinity of said imaginary lines or in a more outer area from the same.

34. Assembly, according to any one of claims 27, 28 or 32, characterized in that said outer face (12b) of the ears (12) is substantially flush with said open face (22b) of the recesses (22) of the holder (twenty).

35. Assembly according to any one of claims 27, 28 or 32, characterized in that said outer face (12b) of the ears (12) is separated outwardly from the open face (22b) of the corresponding recess (22) , and lateral projections (12e) of the ears (12) are superimposed on an outer surface (22e) adjacent to the open face (22b) of the tooth bar (20).

36. Assembly according to any one of claims 27, 28 or 32, characterized in that said inner face (12a) of the ears (12) is flat and the bottom face of the recess (22) is flat.

37. Assembly according to any one of claims 27, 28 or 32, characterized in that said inner face (12a) of the ears (12) is curved and said bottom (22a) of the corresponding recess (22) has a complementary curvature .

38. Set according to any one of claims 27, 28 or 32, characterized in that the inner faces (12a) of both ears (12) are mutually parallel and said bottoms (22a) of the corresponding recesses (22) are mutually parallel

39. Assembly, according to any one of claims 27, 28 or 32, characterized in that the inner faces (12a) of both ears (12) are inclined relative to each other and said bottoms (22a) of the corresponding recesses (22) are inclined towards each other.

40. Assembly, according to any one of claims 27, 28 or 32, characterized in that the inner faces (12a) of both ears (12) have, in cross-sectional views, respective angled configurations with points directed outwards and said bottoms (22a) of the corresponding recesses (22) have, seen in cross-section, respective angled configurations with points directed outwards.