EP1686847A2 - Improved machine for product mixing and distribution - Google Patents

Improved machine for product mixing and distribution

Info

Publication number
EP1686847A2
EP1686847A2 EP04805481A EP04805481A EP1686847A2 EP 1686847 A2 EP1686847 A2 EP 1686847A2 EP 04805481 A EP04805481 A EP 04805481A EP 04805481 A EP04805481 A EP 04805481A EP 1686847 A2 EP1686847 A2 EP 1686847A2
Authority
EP
European Patent Office
Prior art keywords
screw
mixing
hatch
cradle
axis
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP04805481A
Other languages
German (de)
French (fr)
Inventor
Gérard Lucas
Jean-Claude Retaillaud
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.)
Lucas G SA
Original Assignee
Lucas G SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lucas G SA filed Critical Lucas G SA
Publication of EP1686847A2 publication Critical patent/EP1686847A2/en
Withdrawn legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01KANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K5/00Feeding devices for stock or game ; Feeding wagons; Feeding stacks
    • A01K5/001Fodder distributors with mixer or shredder
    • A01K5/002Fodder distributors with mixer or shredder with mixing or shredding element rotating on horizontal axis

Definitions

  • the present invention relates generally to a mixing machine distributing products, in particular for feeding cattle, for preparing compost or the like.
  • Document US Pat. No. 3,672,640 in particular discloses mixing machines formed by a bucket open on the top.
  • This bucket contains a large diameter rotor which extends longitudinally between the end walls and which is partially enveloped by a rounded bottom in the form of a trough or cradle.
  • This rotor mixes and mixes the products which it transfers progressively onto an endless screw arranged laterally, parallel to said rotor, and whose diameter is three to four times smaller than the latter.
  • This lateral screw also extends between the two end walls of the bucket, and it is also partially wrapped by a bottom in the form of a trough or cradle; it achieves a continuous longitudinal movement of
  • the dispensing orifice is located on either side of the horizontal plane passing through the axis of the mixing / dispensing screw. In this machine, the small side screw moves the products from top to bottom opposite the distribution hatch. This type of machine only performs mixing operations for products intended in particular for animal feed.
  • the document EP-0498 543 describes a machine of the type described above, comprising a product cutting function thanks to the presence of a transfer and cutting screw, which makes it possible to incorporate products of the hay or straw in the bucket.
  • This transfer screw the diameter of which is substantially the same as that of the aforementioned mixing / distribution screw, is arranged above the latter, turning in the same direction but with an inverted propeller pitch. It has knives on its periphery which allow to drive and cut hay or straw.
  • Such machines combine a function of mixing products with a function of cutting the latter.
  • Mixing machines distributing products for feeding cattle similar to that of document EP-0498 543 are also described in documents FR-2 820 952 and FR-2 820 953. In these machines, opposite the distribution hatch , the mixing / distribution screw moves the products from the bottom to the top.
  • the cradle of the mixing / distribution screw best fits the lower part of the periphery of this screw, so as to optimize the mixing and handling of the products; for this purpose, the clearance between the screw cradle and the periphery of the screw is substantially constant, of the order of 10 to 20 mm, for example.
  • the distribution flap extends the screw cradle so as to preserve the aforementioned clearance up to the horizontal plane passing through the axis of the screw (this structural configuration is not visible in Figures 1 of the two corresponding documents, since these two figures are cross sections of the machine not passing through the distribution hatch).
  • the end of the mixing / dispensing screw has a short length with inverted pitch, to facilitate the recycling of products in the closed hatch position, and to optimize emptying, in the open hatch position.
  • the effect of these jams results in a strong power requisition on the drive motorization of the mixing / distribution screw, in this case very often the motorization of an agricultural tractor. It is therefore necessary to use very powerful motorizations and very mechanical assemblies resistant, able to absorb the aforementioned stuffing phenomena, under penalty of causing stalling of the motorization and / or significant risk of breakage in terms of the mechanical drive of the members.
  • the present invention relates to a mixing machine distributing products of the type described in documents FR-2 820 952 and FR-
  • bottom comprises a section in the form of a cradle partially enveloping a large diameter mixing rotor which extends horizontally up to the end walls, which cradle is connected by an edge to a section in the form of a cradle partially enveloping a screw endless mixing / distribution, horizontal axis, which extends parallel to said rotor to move said products from one end to the other of the bottom, going towards a dispensing orifice associated with a movable hatch, which orifice is fitted on one of said side walls, and possibly on a part of said screw cradle, near one of said end walls of the bucket said screw without end of mixing / dispensing being rotated in a suitable direction to move the products from the bottom upwards facing the dispensing hatch, this machine being characterized by the fact that the inside face of the movable hatch, and possibly the portion of the screw cradle which is located opposite the dispensing orifice, are shaped so, from one of their lines parallel to the axi
  • the line of the screw cradle or of the internal face of the hatch which constitutes the entrance to the evacuation section with progressive opening, is situated upstream from the median plane situated between said horizontal plane P and the vertical alignment.
  • the axis of the mixing / distribution screw taking into account the direction of rotation of this screw.
  • the entry of the evacuation section with progressive opening is located upstream of the vertical line of the axis of said mixing / distribution screw, always taking into account the direction of rotation of this screw.
  • the line constituting the inlet of the evacuation section with progressive opening is located on the edge which connects the rotor cradle and the screw cradle, or near this edge.
  • the discharge section at. progressive opening extends beyond the line corresponding to the intersection of the horizontal plane P passing through the axis of the mixing / distribution screw with the movable hatch.
  • the mixing / distribution screw is surmounted by a transfer screw adapted to move the products longitudinally in the bucket, in a direction which is the opposite of that induced by said mixing / distribution screw, the hatch mobile having a curved interior profile adapted so as, in the closed position, to orient the products coming from said mixing / dispensing screw, towards said transfer screw.
  • the lower end edge of the dispensing orifice is located substantially perpendicular to the axis of the mixing / distributing screw, and this orifice is associated with a movable hatch mounted to pivot, articulated around a horizontal axis located at its upper end edge, which hatch is associated with at least one actuating cylinder.
  • FIG. 1 is a schematic elevational view of a distributing mixing bucket according to the invention
  • FIG. 2 is a sectional view along B-B of Figure 1;
  • FIG. 3 is a sectional view along A-A of Figure 1;
  • - Figure 4 is an enlarged view of part of Figure 3, detailing the evacuation section with progressive opening of the bucket;
  • Figure 5 is a sectional view similar to Figure 3, with the removable door in the open position;
  • FIG. 6 is a schematic sectional view illustrating an alternative embodiment of a mixing distributor machine according to the invention, provided with an articulated distribution hatch;
  • FIGS. 1 to 5 comprises a bucket 1 in the form of a tank or box delimited by a bottom 2, side walls 3 and 4 and front end walls 5 and rear 6.
  • the bucket 1 East mounted on a rolling chassis fitted with an arrow allowing it to be coupled to a tractor vehicle, in particular an agricultural tractor; in an alternative embodiment, the bucket can be carried by a towing vehicle.
  • the bottom 2 comprises two sections 7 and 8, each in the form of a trough or cradle. These two sections 7 and 8 have general shapes substantially in the portion of a cylinder whose radii are different.
  • the radius of the section 8 is of the order of three to four times less than that of the section 7, and these two sections meet by forming an edge marked 9.
  • the section 7 of the bottom 2 constitutes the partial envelope of a mixing rotor
  • the section 8 of the bottom 2 partially envelops a screw 1 for mixing and dispensing the product, which extends parallel to the mixing rotor 10.
  • This screw 11 has a diameter which is three to four times less than that of the rotor 10; its upper periphery is located substantially at the same level as the axis of the rotor 10.
  • a second screw 12, called transfer screw, extends above the screw 11, parallel to the latter.
  • This screw 12 has a diameter which corresponds substantially to that of the screw 11.
  • the transfer screw 12 is equipped with teeth or knives 13 capable of cutting or shredding products of the grass, hay or straw type. These teeth or knives 13 advantageously cooperate with a system of counter knives 14 mounted on a longitudinal beam 15.
  • the transfer screw 12 is advantageously associated with an upper flap 6, pivoting, articulated for example on the beam 15 to close or open the upper opening of the bucket.
  • an orifice 17 is arranged at the side wall 3 and the bottom section 8 to ensure the distribution of the mixture of products.
  • This dispensing orifice 17 has a generally square or rectangular shape; it extends over a width] and it is delimited by a lower border 17a and by an upper border 17b. In addition, it is arranged on either side of a horizontal plane P passing through the axis 11b of the mixing / distribution screw 11.
  • This orifice 17 is associated with a movable hatch 18, here in the form of a sliding hatch operated by a jack 19.
  • the screw 11 has a length 11 a whose pitch is reversed relative to the pitch of the rest of its length ( Figure 2).
  • the flap 16 being in the open position, the products to be mixed are poured into the bucket 1 above the screw 12; this screw 12 directs the products towards the rotor 10 which performs their mixing.
  • the rotor 10 propels the products towards the screw 11 and this screw 11 moves them from one end to the other of the bucket, from the rear to the front for example, as illustrated by the orientation arrows of the Figures 1 and 2.
  • the hatch 18 being closed, in the pitch reversal zone of the screw 11, the product mixture is oriented against said hatch 18 and forced by the latter to go up towards the transfer screw 12 in view of its recycling in the bucket.
  • This upper transfer screw 12 rotates in the same direction as the mixing / distribution screw 11, but the pitch of its propeller is reversed to circulate the products from the front to the rear of the bucket, for example (see orientation arrows of Figures 1 and 2), and thus to improve the mixing.
  • the distribution of the product mixture is obtained by opening the hatch 18; the short length 11a of the screw 11, with inverted pitch, facilitates the exit of the products through the orifice 17.
  • the rotor 10 and the two screws 11 and 12 are driven in rotation by an appropriate motorization, in particular by the motorization of the agricultural tractor associated with the machine.
  • the wall which surrounds this screw 11 at the level of the distribution orifice 17 is shaped so as to gradually move away from the periphery of said screw 11 to define a section for discharging the product with progressive opening, this from a line located upstream of a line corresponding to the intersection of the horizontal plane P passing through the axis 11 b of the screw 11 with the movable hatch 18, and at least up to said horizontal plane P.
  • the wall in question defining the shape of this evacuation section with progressive opening may consist only of the inner face of the movable hatch 18, or of this inner hatch face associated with the portion 8a of the screw cradle 8 which is located opposite the distribution orifice 17, between the lower edge 17a of this orifice 17 and the edge
  • the progressive spacing defined above is understood in the direction of rotation of the mixing / distribution screw 11 (that is to say a direction ensuring the displacement of the products from the bottom upwards facing the hatch 18 ).
  • the cradle 8 of the screw 11 may have an entirely conventional shape, best enveloping the lower part of the periphery of said screw 11; the spacing between the cradle 8 and the periphery of the screw 11 is then constant or substantially constant, of the order of 10 to 20 mm for example. In an alternative embodiment, this spacing may be slightly increasing, taking account of the direction of rotation of the screw.
  • Figures 3 and 4 detail a possible embodiment of the above-mentioned progressive opening discharge section.
  • Figure 3 is a cross-sectional view of the machine at the dispensing opening 17 associated with the movable hatch 18; and Figure 4 is an enlarged view of part of Figure 3, illustrating the invention in detail.
  • the cradle 8 follows the periphery of the screw 11 substantially up to at the line marked 20; then, from this line 20, the cradle 8a progressively departs from the periphery of the screw 11, to the lower edge 17a of the dispensing orifice
  • the cradle portion 8a is spaced from the periphery of the screw 11 by a constant or substantially constant distance of the order of 10 to 20 mm; between the line 20 and the line formed by the lower edge 17a of the dispensing orifice 17, the distance between the portion of the cradle 8a and the periphery of the screw
  • the interior face of the hatch 18 has a generally curved shape which, in the closed hatch position, continues to move away progressively from the turn of the screw 11.
  • the clearance between the periphery of the mixing / dispensing screw 11 and the lower part of the hatch 18 is approximately 60 mm, and the corresponding clearance passes to approximately 240 mm at the upper part of said hatch 18 which.
  • the profile of the cradle 8a and of the interior face of the hatch 18 is not concentric with the axis 11b of the screw 11, but eccentric; this profile is elliptical or substantially elliptical and, as explained above, it deviates progressively from the periphery of the turn of the screw in order to be continuously releasing, this of course with respect to the direction of rotation of the screw 11, identified by the orientation arrow 24.
  • This particular configuration optimizes the handling of the mixture of products by the screw 11 and its delivery in the direction of the transfer screw 12. This thus greatly limits the phenomena of stuffing at the level of the screw.
  • the opening of the hatch 18, as illustrated in FIG. 5, ensures the distribution of the product outside the bucket, in a conventional manner.
  • the movable hatch 18 may be in the form of a curved flap, articulated at its upper edge about an axis 25 parallel to the axis of the screws 11 and 12.
  • the hinged flap 18 is here again operated by means of a jack 19.
  • the lower end edge of the dispensing orifice 17 is located downstream of the plumb line of the axis 11b of the mixing / distribution screw 11. As illustrated in FIG.
  • the evacuation section with progressive opening 22 extends from a line marked 20 situated between the edge 9 and the vertical alignment of the axis 11b of the screw 11, to a level located beyond the horizontal plane P passing through said axis 11 b.
  • the entrance to this section 22 can be located before or after this line 20 (in particular between the edge 9 and a zone located between the vertical axis of the axis 11b of the screw 11 and the line 23 of the horizontal plane P), and its outlet may be located before the upper edge 17b of said orifice 17 (in particular between this upper edge 17b and said line 23).
  • the entry of this section 22 is located upstream of the median plane located between the horizontal plane P and the vertical alignment of the axis of the screw 11.
  • the curved profile defining this section 22 with progressive opening advantageously consists of: 'a fixed part 8a extending the rotor cradle 7 and the curved internal face of the hatch 18.
  • the curvature of the internal face of the hatch 18 can define this evacuation section 22 with progressive opening, the lower edge of the hatch 18 extending to a fixed portion of cylindrical shape centered on the axis 11b of the screw 11, or even extending to the aforementioned edge 9.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Birds (AREA)
  • Animal Husbandry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
  • Fodder In General (AREA)
  • Feeding And Watering For Cattle Raising And Animal Husbandry (AREA)

Abstract

The invention relates to a machine for mixing and distributing products, in particular for the feeding of cattle, comprising a skip (1) the base (2) of which comprises a section in the form of a cradle (7) partly enclosing a mixing rotor (10), said cradle (7) is connected along an edge (9) to a section in the form of a cradle (8), partly enveloping an endless mixing/distribution screw (11), with a horizontal axis (11<u>b</u>), running parallel to said rotor (10), for displacing said products from one end to the other of said base (2), in the direction of an opening (17), provided with a moving flap (18), the mixing/distribution screw (11) being driven in an appropriate direction for displacement of the products upwards, opposite said flap (18). According to the invention, the machine is characterised by the fact that the internal face of the flap (18) and optionally that section (8<u>a</u>) of the screw cradle (8) located opposite the distribution opening (17), are embodied such as to diverge progressively from the edge of said screw (11), at least as far as the horizontal plane (<u>P</u>), starting from one of the lines (20) thereof, parallel to the axis (11<u>b</u>) of the screw (11) and arranged above a line (23), corresponding to the intersection of the horizontal plane (<u>P</u>) passing through said axis (11<u>b</u>) with the mobile flap (18), taking into account the direction of rotation of said screw (11) and in the closed flap position, in order to define a section for ejection of the product with a progressive opening (22). This feature limits the problems of clogging of the mix of products in the mixing/distribution screw (11) and significantly reduces the power required for adequate driving of said screw (11).

Description

PERFECTIONNEMENT AUX MACHINES MÉLANGEUSES DISTRIBUTRICES DE PRODUITS La présente invention concerne d'une manière générale une machine mélangeuse distributrice de produits, notamment pour l'alimentation du bétail, pour la préparation de compost ou autre. On connaît notamment par le document US-3 672 640 des machines mélangeuses formées d'une benne ouverte sur le dessus. Cette benne renferme un rotor de grand diamètre qui s'étend longitudinalement entre les parois d'extrémités et qui est partiellement enveloppé par un fond arrondi en forme d'auge ou de berceau. Ce rotor brasse et mélange les produits qu'il transfère au fur et à mesure sur une vis sans fin disposée latéralement, parallèlement audit rotor, et dont le diamètre est de trois à quatre fois plus petit que ce dernier. Cette vis latérale s'étend également entre les deux parois d'extrémités de la benne, et elle est également enveloppée partiellement par un fond en forme d'auge ou de berceau ; elle réalise un mouvement longitudinal continu de The present invention relates generally to a mixing machine distributing products, in particular for feeding cattle, for preparing compost or the like. Document US Pat. No. 3,672,640 in particular discloses mixing machines formed by a bucket open on the top. This bucket contains a large diameter rotor which extends longitudinally between the end walls and which is partially enveloped by a rounded bottom in the form of a trough or cradle. This rotor mixes and mixes the products which it transfers progressively onto an endless screw arranged laterally, parallel to said rotor, and whose diameter is three to four times smaller than the latter. This lateral screw also extends between the two end walls of the bucket, and it is also partially wrapped by a bottom in the form of a trough or cradle; it achieves a continuous longitudinal movement of
, déplacement des produits d'un bout à l'autre de la benne en allant vers l'extrémité de cette dernière où se situe un orifice de distribution, de sorte que, lorsque cet orifice est fermé par une trappe appropriée, les produits sont déplacés dans la benne, en circuit fermé, et sont brassés grâce au rotor de mélange. Habituellement, l'orifice de distribution se situe de part et d'autre du plan horizontal passant par l'axe de la vis de mélange/distribution. Dans_cette machine, la petite vis latérale déplace les produits du haut vers le bas en regard de la trappe de distribution. Ce type de machine effectue seulement les opérations de mélange de produits destinés notamment à l'alimentation du bétail. Un autre type de machine a donc été développé afin de pouvoir effectuer, en plus, le déchiquetage et/ou la découpe des produits, du genre foin ou paille par exemple, susceptibles d'entrer dans la composition de la ration alimentaire. Ainsi, le document EP-0498 543 décrit une machine du type de celle décrite précédemment, comprenant une fonction dé découpe des produits grâce à la présence d'une vis de transfert et de découpe, qui permet d'incorporer des produits du genre foin ou paille dans la benne. Cette vis de transfert, dont le diamètre est sensiblement le même que celui de la vis de mélange/distribution précitée, est disposée au-dessus de cette dernière, tournant dans le même sens mais avec un pas d'hélice inversé. Elle comporte sur sa périphérie, des couteaux qui permettent d'entraîner et de découper le foin ou la paille. On peut alors obtenir un produit alimentaire constitué de brins découpés de paille ou de foin mélangés par exemple avec de la poudre ou des granulés de nature diverse. De telles machines associent une fonction de mélange des produits à une fonction de découpe de ces derniers. Des machines mélangeuses distributrices de produits pour l'alimentation du bétail semblables à celle du document EP-0498 543 sont également décrites dans les documents FR-2 820 952 et FR-2 820 953. Dans ces machines, en regard de la trappe de distribution, la vis de mélange/distribution déplace les produits du bas vers le haut. En règle générale, le berceau de la vis de mélange/distribution épouse au mieux la partie inférieure de la périphérie de cette vis, de manière à optimiser le mélange et la prise en charge des produits ; à cet effet, le jeu entre le berceau de vis et la périphérie de la vis est sensiblement constant, de l'ordre de 10 à 20 mm, par exemple. De plus, dans les machines des documents de la demanderesse FR- 2 820 952 ou FR-2 820 953, la trappe de distribution prolonge le berceau de vis de manière à préserver le jeu précité jusqu'au plan horizontal passant par l'axe de la vis (cette configuration structurelle n'est pas visible sur les figures 1 des deux documents correspondants, puisque ces deux figures sont des coupes transversales de la machine ne passant pas par la trappe de distribution). D'autre part, au niveau de l'orifice de distribution des machines des documents FR-2 820 952 et FR-2 820 953, l'extrémité de la vis de mélange/distribution comporte une petite longueur à pas inversé, pour faciliter le recyclage des produits en position de trappe fermée, et pour optimiser la vidange, en position de trappe ouverte. Cependant, pour certains types de produits, en particulier des fourrages longs et fibreux, il se produit durant les phases de mélange des enroulements et des compressions sur la vis de mélange/distribution, au niveau de l'inversion des pas, face à la trappe de distribution., displacement of the products from one end to the other of the bucket going towards the end of the latter where there is a dispensing orifice, so that, when this orifice is closed by an appropriate hatch, the products are displaced in the bucket, in a closed circuit, and are stirred thanks to the mixing rotor. Usually, the dispensing orifice is located on either side of the horizontal plane passing through the axis of the mixing / dispensing screw. In this machine, the small side screw moves the products from top to bottom opposite the distribution hatch. This type of machine only performs mixing operations for products intended in particular for animal feed. Another type of machine has therefore been developed in order to be able, in addition, to shred and / or cut products, such as hay or straw, for example, which may enter into the composition of the food ration. Thus, the document EP-0498 543 describes a machine of the type described above, comprising a product cutting function thanks to the presence of a transfer and cutting screw, which makes it possible to incorporate products of the hay or straw in the bucket. This transfer screw, the diameter of which is substantially the same as that of the aforementioned mixing / distribution screw, is arranged above the latter, turning in the same direction but with an inverted propeller pitch. It has knives on its periphery which allow to drive and cut hay or straw. One can then obtain a food product consisting of cut strands of straw or hay mixed for example with powder or granules of various kinds. Such machines combine a function of mixing products with a function of cutting the latter. Mixing machines distributing products for feeding cattle similar to that of document EP-0498 543 are also described in documents FR-2 820 952 and FR-2 820 953. In these machines, opposite the distribution hatch , the mixing / distribution screw moves the products from the bottom to the top. As a general rule, the cradle of the mixing / distribution screw best fits the lower part of the periphery of this screw, so as to optimize the mixing and handling of the products; for this purpose, the clearance between the screw cradle and the periphery of the screw is substantially constant, of the order of 10 to 20 mm, for example. In addition, in the machines of the documents of the applicant FR-2 820 952 or FR-2 820 953, the distribution flap extends the screw cradle so as to preserve the aforementioned clearance up to the horizontal plane passing through the axis of the screw (this structural configuration is not visible in Figures 1 of the two corresponding documents, since these two figures are cross sections of the machine not passing through the distribution hatch). On the other hand, at the level of the dispensing orifice of the machines of documents FR-2 820 952 and FR-2 820 953, the end of the mixing / dispensing screw has a short length with inverted pitch, to facilitate the recycling of products in the closed hatch position, and to optimize emptying, in the open hatch position. However, for certain types of products, in particular long and fibrous fillings, it occurs during the mixing phases of the windings and compressions on the mixing / distribution screw, at the level of the pitch reversal, facing the hatch of distribution.
L'effet de ces bourrages se traduit par une forte réquisition de puissance sur la motorisation d'entraînement de la vis de mélange/distribution, en l'occurrence bien souvent la motorisation d'un tracteur agricole. Il est en conséquence nécessaire d'utiliser des motorisations très puissantes et des ensembles mécaniques très résistants, aptes à absorber les phénomènes de bourrage précités, sous peine d'entraîner des calages de la motorisation et/ou des risques de casse importants au niveau de la mécanique d'entraînement des organes. La présente invention a pour objet une machine mélangeuse distributrice de produits du type de celles décrites dans les documents FR-2 820 952 et FR-The effect of these jams results in a strong power requisition on the drive motorization of the mixing / distribution screw, in this case very often the motorization of an agricultural tractor. It is therefore necessary to use very powerful motorizations and very mechanical assemblies resistant, able to absorb the aforementioned stuffing phenomena, under penalty of causing stalling of the motorization and / or significant risk of breakage in terms of the mechanical drive of the members. The present invention relates to a mixing machine distributing products of the type described in documents FR-2 820 952 and FR-
2 820 953 qui remédie aux inconvénients précités, et en particulier qui permet de limiter la puissance nécessaire à l'entraînement de la vis de mélange/distribution, ceci dans le cadre de tout type de mélange de produits. Les buts ci-dessus sont atteints par une machine mélangeuse distributrice de produits en particulier pour l'alimentation du bétail, laquelle machine est constituée d'une benne munie d'un fond qui s'étend entre des parois latérales et des parois d'extrémités, lequel fond comporte un tronçon en forme de berceau enveloppant partiellement un rotor de mélange de grand diamètre qui s'étend iongitudinalement jusqu'aux parois d'extrémités, lequel berceau est raccordé par une arête à un tronçon en forme de berceau enveloppant partiellement une vis sans fin de mélange/distribution, d'axe horizontal, qui s'étend parallèlement audit rotor pour déplacer lesdits produits d'une extrémité à l'autre du fond, en allant vers un orifice de distribution associé à une trappe mobile, lequel orifice est aménagé sur l'une desdites parois latérales, et éventuellement sur une partie dudit berceau de vis, à proximité d'une desdites parois d'extrémités de la benne ladite vis sans fin de mélange/distribution étant entraînée en rotation dans un sens approprié pour déplacer les produits du bas vers le haut en regard de la trappe de distribution, cette machine étant caractérisée par le fait que la face intérieure de la trappe mobile, et éventuellement la portion du berceau de vis qui est située en regard de l'orifice de distribution, sont conformées de manière, à partir de l'une de leurs lignes parallèle à l'axe de ladite vis de mélange/distribution, et située en amont d'une ligne correspondant à l'intersection du plan horizontal P passant par ledit axe de vis avec la trappe mobile, ceci tenant compte du sens de rotation de ladite vis et en position de trappe fermée, à s'écarter progressivement de la périphérie de ladite vis, au moins jusqu'au plan horizontal P, pour définir une section d'évacuation du produit à ouverture progressive.2,820,953 which overcomes the aforementioned drawbacks, and in particular which makes it possible to limit the power necessary for driving the mixing / distribution screw, this in the context of any type of mixing of products. The above objects are achieved by a mixing machine distributing products, in particular for feeding cattle, which machine consists of a bucket provided with a bottom which extends between side walls and end walls. , which bottom comprises a section in the form of a cradle partially enveloping a large diameter mixing rotor which extends horizontally up to the end walls, which cradle is connected by an edge to a section in the form of a cradle partially enveloping a screw endless mixing / distribution, horizontal axis, which extends parallel to said rotor to move said products from one end to the other of the bottom, going towards a dispensing orifice associated with a movable hatch, which orifice is fitted on one of said side walls, and possibly on a part of said screw cradle, near one of said end walls of the bucket said screw without end of mixing / dispensing being rotated in a suitable direction to move the products from the bottom upwards facing the dispensing hatch, this machine being characterized by the fact that the inside face of the movable hatch, and possibly the portion of the screw cradle which is located opposite the dispensing orifice, are shaped so, from one of their lines parallel to the axis of said mixing / dispensing screw, and located upstream of a line corresponding to the intersection of the horizontal plane P passing through said screw axis with the movable hatch, this taking account of the direction of rotation of said screw and in the closed hatch position, to move away progressively from the periphery of said screw, at least up to the horizontal plane P, to define a product discharge section with progressive opening.
Cet écartement progressif de la paroi en regard de la périphérie de la vis, au moins jusqu'au plan horizontal P passant par l'axe de cette vis, permet d'éviter les phénomènes de bourrage en regard de la trappe mobile lors des phases de mélange du produit et limite la puissance moteur nécessaire à l'entraînement de la vis, quel que soit le type de mélange en présence. De préférence, la ligne du berceau de vis ou de la face interne de la trappe, qui constitue l'entrée de la section d'évacuation à ouverture progressive, est située en amont du plan médian situé entre ledit plan P horizontal et l'aplomb de l'axe de la vis de mélange/distribution, tenant compte du sens de rotation de cette vis.This gradual spacing of the wall opposite the periphery of the screw, at least up to the horizontal plane P passing through the axis of this screw, makes it possible to avoid stuffing phenomena facing the mobile hatch during the phases of mixing of the product and limits the motor power required to drive the screw, regardless of the type of mixture present. Preferably, the line of the screw cradle or of the internal face of the hatch, which constitutes the entrance to the evacuation section with progressive opening, is situated upstream from the median plane situated between said horizontal plane P and the vertical alignment. the axis of the mixing / distribution screw, taking into account the direction of rotation of this screw.
Encore de manière préférée, l'entrée de la section d'évacuation à ouverture progressive se situe en amont de l'aplomb de l'axe de ladite vis de mélange/distribution, toujours en tenant compte du sens de rotation de cette vis. Dans une forme de réalisation particulière, la ligne constituant l'entrée de la section d'évacuation à ouverture progressive se situe sur l'arête qui relie le berceau de rotor et le berceau de vis, ou à proximité de cette arête. Toujours selon une caractéristique préférée, la section d'évacuation à . ouverture progressive s'étend au-delà de la ligne correspondant à l'intersection du plan horizontal P passant par l'axe de la vis de mélange/distribution avec la trappe mobile. Selon une forme de réalisation intéressante, le jeu entre la périphérie de la vis de mélange/distribution et le berceau de cette vis ou la face intérieure de la trappe mobile en position fermée, passe d'environ 10 à 20 mm au niveau de la ligne d'entrée de la section d'évacuation à ouverture progressive, à environ 120 mm au niveau du plan horizontal P passant par l'axe de ladite vis. Selon encore une autre caractéristique, la face intérieure de la trappe mobile présente une forme générale courbe dont les génératrices s'étendent parallèlement à l'axe de la vis de mélange/distribution. Dans ce cadre, le jeu entre la périphérie de la vis de distribution et la trappe mobile en position fermée peut passer d'environ 60 mm au niveau de la partie basse de ladite trappe, à environ 240 mm dans la partie haute de cette trappe. Selon une autre particularité, la vis de mélange/distribution est surmontée d'une vis de transfert adaptée pour déplacer les produits longitudinalement dans la benne, dans un sens qui est l'inverse de celui induit par ladite vis de mélange/distribution, la trappe mobile ayant un profil intérieur courbe adapté de sorte, en position fermée, à orienter les produits provenant de ladite vis de mélange/distribution, vers ladite vis de transfert. Dans une forme de réalisation particulière, la bordure d'extrémité inférieure de l'orifice de distribution est située sensiblement à l'aplomb de l'axe de la vis de mélange/distribution, et cet orifice est associé à une trappe mobile montée pivotante, articulée autour d'un axe horizontal situé au niveau de sa bordure d'extrémité supérieure, laquelle trappe est associée à au moins un vérin de manoeuvre. Mais l'invention sera encore illustrée, sans être aucunement limitée, par la description suivante de différents modes de réalisation particuliers, donnés uniquement à titre d'exemples et représentés sur les dessins annexés dans lesquels :Also preferably, the entry of the evacuation section with progressive opening is located upstream of the vertical line of the axis of said mixing / distribution screw, always taking into account the direction of rotation of this screw. In a particular embodiment, the line constituting the inlet of the evacuation section with progressive opening is located on the edge which connects the rotor cradle and the screw cradle, or near this edge. Still according to a preferred characteristic, the discharge section at. progressive opening extends beyond the line corresponding to the intersection of the horizontal plane P passing through the axis of the mixing / distribution screw with the movable hatch. According to an advantageous embodiment, the clearance between the periphery of the mixing / distribution screw and the cradle of this screw or the internal face of the movable hatch in the closed position, passes from approximately 10 to 20 mm at the level of the line entry of the evacuation section with progressive opening, approximately 120 mm at the horizontal plane P passing through the axis of said screw. According to yet another characteristic, the interior face of the movable hatch has a generally curved shape whose generatrices extend parallel to the axis of the mixing / distribution screw. In this context, the clearance between the periphery of the dispensing screw and the movable hatch in the closed position can pass from approximately 60 mm at the lower part of said hatch, to approximately 240 mm in the upper part of this hatch. According to another particularity, the mixing / distribution screw is surmounted by a transfer screw adapted to move the products longitudinally in the bucket, in a direction which is the opposite of that induced by said mixing / distribution screw, the hatch mobile having a curved interior profile adapted so as, in the closed position, to orient the products coming from said mixing / dispensing screw, towards said transfer screw. In a particular embodiment, the lower end edge of the dispensing orifice is located substantially perpendicular to the axis of the mixing / distributing screw, and this orifice is associated with a movable hatch mounted to pivot, articulated around a horizontal axis located at its upper end edge, which hatch is associated with at least one actuating cylinder. However, the invention will be further illustrated, without being in any way limited, by the following description of various particular embodiments, given solely by way of examples and represented in the appended drawings in which:
- la figure 1 est une vue schématique en élévation d'une benne mélangeuse distributrice conforme à l'invention ;- Figure 1 is a schematic elevational view of a distributing mixing bucket according to the invention;
- la figure 2 est une vue en coupe selon B-B de la figure 1 ;- Figure 2 is a sectional view along B-B of Figure 1;
- la figure 3 est une vue en coupe selon A-A de la figure 1 ; - la figure 4 est une vue agrandie d'une partie de la figure 3, détaillant la section d'évacuation à ouverture progressive de la benne ;- Figure 3 is a sectional view along A-A of Figure 1; - Figure 4 is an enlarged view of part of Figure 3, detailing the evacuation section with progressive opening of the bucket;
- la figure 5 est une vue en coupe similaire à la figure 3, avec la trappe amovible en position ouverte ;- Figure 5 is a sectional view similar to Figure 3, with the removable door in the open position;
- la figure 6 est une vue en coupe schématique illustrant une variante de réalisation d'une machine mélangeuse distributrice conforme à l'invention, munie d'une trappe de distribution articulée ;- Figure 6 is a schematic sectional view illustrating an alternative embodiment of a mixing distributor machine according to the invention, provided with an articulated distribution hatch;
- la figure 7 est une variante de réalisation de la machine illustrée sur la figure 6, dans laquelle l'ouverture de distribution des produits s'étend sensiblement jusqu'à l'aplomb de l'axe de la vis de mélange/distribution. Dans la description qui suit, et pour tous les modes de réalisation décrits, les mêmes chiffres de références sont utilisés pour désigner des organes ou objets identiques d'une machine mélangeuse distributrice de produits pour l'alimentation du bétail. La machine présentée est du type de celle décrite dans les documents FR- 2 820 952 et FR-2 820 953 précités, et les parties, utiles à la compréhension de l'invention sont détaillées ci-après. La machine illustrée schématiquement sur les figures 1 à 5 comprend une benne 1 en forme de cuve ou de caisse délimitée par un fond 2, des parois latérales 3 et 4 et des parois d'extrémités avant 5 et arrière 6. Ici, la benne 1 est montée sur un, châssis roulant muni d'une flèche permettant son attelage à un véhicule tracteur, en particulier un tracteur agricole ; dans une variante de réalisation, la benne peut être portée par un véhicule tracteur. Le fond 2 comprend deux tronçons 7 et 8, chacun en forme d'auge ou de berceau. Ces deux tronçons 7 et 8 ont des formes générales sensiblement en portion de cylindre dont les rayons sont différents.- Figure 7 is an alternative embodiment of the machine illustrated in Figure 6, wherein the product dispensing opening extends substantially up to the vertical line of the axis of the mixing / dispensing screw. In the following description, and for all the embodiments described, the same reference numerals are used to designate identical members or objects of a mixing machine distributing products for feeding cattle. The machine presented is of the type described in documents FR-2 820 952 and FR-2 820 953 mentioned above, and the parts useful for understanding the invention are detailed below. The machine illustrated diagrammatically in FIGS. 1 to 5 comprises a bucket 1 in the form of a tank or box delimited by a bottom 2, side walls 3 and 4 and front end walls 5 and rear 6. Here, the bucket 1 East mounted on a rolling chassis fitted with an arrow allowing it to be coupled to a tractor vehicle, in particular an agricultural tractor; in an alternative embodiment, the bucket can be carried by a towing vehicle. The bottom 2 comprises two sections 7 and 8, each in the form of a trough or cradle. These two sections 7 and 8 have general shapes substantially in the portion of a cylinder whose radii are different.
D'une manière générale, le rayon du tronçon 8 est de l'ordre de trois à quatre fois inférieur à celui du tronçon 7, et ces deux tronçons se rejoignent en formant une arête repérée 9. Le tronçon 7 du fond 2 constitue l'enveloppe partielle d'un rotor de mélangeIn general, the radius of the section 8 is of the order of three to four times less than that of the section 7, and these two sections meet by forming an edge marked 9. The section 7 of the bottom 2 constitutes the partial envelope of a mixing rotor
10 qui s'étend longitudinalement entre les parois d'extrémités 5 et 6. Le tronçon 8 du fond 2 enveloppe partiellement une vis 1 de mélange et de distribution du produit, qui s'étend parallèlement au rotor de mélange 10. Cette vis 11 a un diamètre qui est de trois à quatre fois inférieur à celui du rotor 10 ; sa périphérie supérieure se situe sensiblement au même niveau que l'axe du rotor 10. Une seconde vis 12, dite vis de transfert, s'étend au-dessus de la vis 11 , parallèlement à cette dernière. Cette vis 12 a un diamètre qui correspond sensiblement à celui de la vis 11. On remarque que la vis de transfert 12 est équipée de dents ou couteaux 13 aptes à découper ou déchiqueter des produits du genre herbe, foin ou paille. Ces dents ou couteaux 13 coopèrent avantageusement avec un système de contre-couteaux 14 montés sur une poutre longitudinale 15. D'autre part, la vis de transfert 12 est avantageusement associée à un volet supérieur 6, pivotant, articulé par exemple sur la poutre 15 pour fermer ou ouvrir l'ouverture supérieure de la benne. A proximité de la paroi avant 5 de la benne, un orifice 17 est aménagé au niveau de la paroi latérale 3 et du tronçon de fond 8 pour assurer la distribution du mélange de produits. Cet orifice de distribution 17 a une forme générale carrée ou rectangulaire ; il s'étend sur une largeur ] et il est délimité par une bordure inférieure 17a et par une bordure supérieure 17b. De plus, il est aménagé de part et d'autre d'un plan horizontal P passant par l'axe 11 b de la vis de mélange/distribution 11.10 which extends longitudinally between the end walls 5 and 6. The section 8 of the bottom 2 partially envelops a screw 1 for mixing and dispensing the product, which extends parallel to the mixing rotor 10. This screw 11 has a diameter which is three to four times less than that of the rotor 10; its upper periphery is located substantially at the same level as the axis of the rotor 10. A second screw 12, called transfer screw, extends above the screw 11, parallel to the latter. This screw 12 has a diameter which corresponds substantially to that of the screw 11. It is noted that the transfer screw 12 is equipped with teeth or knives 13 capable of cutting or shredding products of the grass, hay or straw type. These teeth or knives 13 advantageously cooperate with a system of counter knives 14 mounted on a longitudinal beam 15. On the other hand, the transfer screw 12 is advantageously associated with an upper flap 6, pivoting, articulated for example on the beam 15 to close or open the upper opening of the bucket. Near the front wall 5 of the bucket, an orifice 17 is arranged at the side wall 3 and the bottom section 8 to ensure the distribution of the mixture of products. This dispensing orifice 17 has a generally square or rectangular shape; it extends over a width] and it is delimited by a lower border 17a and by an upper border 17b. In addition, it is arranged on either side of a horizontal plane P passing through the axis 11b of the mixing / distribution screw 11.
Cet orifice 17 est associé à une trappe mobile 18, ici en forme de trappe coulissante manœuvrée par un vérin 19. Entre la paroi avant 5 et sensiblement la zone médiane de l'orifice de distribution 17, on remarque que la vis 11 comporte une longueur 11 a dont le pas est inversé par rapport au pas du reste de sa longueur (figure 2). Le volet 16 étant en position ouverte, les produits à mélanger sont déversés dans la benne 1 au-dessus de la vis 12 ; cette vis 12 oriente les produits vers le rotor 10 qui réalise leur brassage. Le rotor 10 propulse les produits vers la vis 11 et cette vis 11 les déplace d'une extrémité à l'autre de la benne, de l'arrière vers l'avant par exemple, tel qu'illustré par les flèches d'orientation des figures 1 et 2. La trappe 18 étant fermée, dans la zone d'inversion de pas de la vis 11, le mélange de produits est orienté contre ladite trappe 18 et forcé par celle-ci à remonter vers la vis de transfert 12 en vue de son recyclage dans la benne. Cette vis supérieure de transfert 12 tourne dans le même sens que la vis de mélange/distribution 11 , mais le pas de son hélice est inversé pour faire circuler les produits de l'avant vers l'arrière de la benne, par exemple (voir les flèches d'orientation des figures 1 et 2), et ainsi pour améliorer le mélange. La distribution du mélange de produits est obtenue en ouvrant la trappe 18 ; la petite longueur 11 a de la vis 11 , à pas inversé, facilite la sortie des produits par l'orifice 17. Le rotor 10 et les deux vis 11 et 12 sont entraînés en rotation par une motorisation appropriée, en particulier par la motorisation du tracteur agricole associé à la machine. Conformément à la présente invention, afin de limiter la puissance nécessaire à l'entraînement de la vis de mélange/distribution 11 , la paroi qui entoure cette vis 11 au niveau de l'orifice de distribution 17 est conformée de manière à s'écarter progressivement de la périphérie de ladite vis 11 pour définir une section d'évacuation du produit à ouverture progressive, ceci à partir d'une ligne située en amont d'une ligne correspondant à l'intersection du plan horizontal P passant par l'axe 11 b de la vis 11 avec la trappe mobile 18, et au moins jusqu'audit plan horizontal P. En fonction de la structure de la machine, la paroi en question définissant la forme de cette section d'évacuation à ouverture progressive peut être constituée uniquement de la face intérieure de la trappe mobile 18, ou de cette face intérieure de trappe associée à la portion 8a du berceau de vis 8 qui est située en regard de l'orifice de distribution 17, entre la bordure inférieure 17a de cet orifice 17 et l'arêteThis orifice 17 is associated with a movable hatch 18, here in the form of a sliding hatch operated by a jack 19. Between the front wall 5 and substantially the median zone of the dispensing orifice 17, it is noted that the screw 11 has a length 11 a whose pitch is reversed relative to the pitch of the rest of its length (Figure 2). The flap 16 being in the open position, the products to be mixed are poured into the bucket 1 above the screw 12; this screw 12 directs the products towards the rotor 10 which performs their mixing. The rotor 10 propels the products towards the screw 11 and this screw 11 moves them from one end to the other of the bucket, from the rear to the front for example, as illustrated by the orientation arrows of the Figures 1 and 2. The hatch 18 being closed, in the pitch reversal zone of the screw 11, the product mixture is oriented against said hatch 18 and forced by the latter to go up towards the transfer screw 12 in view of its recycling in the bucket. This upper transfer screw 12 rotates in the same direction as the mixing / distribution screw 11, but the pitch of its propeller is reversed to circulate the products from the front to the rear of the bucket, for example (see orientation arrows of Figures 1 and 2), and thus to improve the mixing. The distribution of the product mixture is obtained by opening the hatch 18; the short length 11a of the screw 11, with inverted pitch, facilitates the exit of the products through the orifice 17. The rotor 10 and the two screws 11 and 12 are driven in rotation by an appropriate motorization, in particular by the motorization of the agricultural tractor associated with the machine. In accordance with the present invention, in order to limit the power necessary for driving the mixing / distribution screw 11, the wall which surrounds this screw 11 at the level of the distribution orifice 17 is shaped so as to gradually move away from the periphery of said screw 11 to define a section for discharging the product with progressive opening, this from a line located upstream of a line corresponding to the intersection of the horizontal plane P passing through the axis 11 b of the screw 11 with the movable hatch 18, and at least up to said horizontal plane P. Depending on the structure of the machine, the wall in question defining the shape of this evacuation section with progressive opening may consist only of the inner face of the movable hatch 18, or of this inner hatch face associated with the portion 8a of the screw cradle 8 which is located opposite the distribution orifice 17, between the lower edge 17a of this orifice 17 and the edge
9 qui raccord le berceau de rotor 7 et le berceau de vis 8.9 which connects the rotor cradle 7 and the screw cradle 8.
L'écartement progressif défini ci-dessus s'entend dans le sens de rotation de la vis de mélange/distribution 11 (c'est-à-dire un sens assurant le déplacement des produits du bas vers le haut en regard de la trappe 18). De part et d'autre de cette portion 8a, le berceau 8 de la vis 11 peut présenter une forme tout-à-fait classique, enveloppant au mieux la partie inférieure de la périphérie de ladite vis 11 ; l'écartement entre le berceau 8 et la périphérie de la vis 11 est alors constant ou sensiblement constant, de l'ordre de 10 à 20 mm par exemple. Dans une variante de réalisation, cet écartement peut être légèrement croissant, tenant compte du sens de rotation de la vis. Les figures 3 et 4 détaillent une forme de réalisation possible de la section d'évacuation à ouverture progressive précitée.The progressive spacing defined above is understood in the direction of rotation of the mixing / distribution screw 11 (that is to say a direction ensuring the displacement of the products from the bottom upwards facing the hatch 18 ). On either side of this portion 8a, the cradle 8 of the screw 11 may have an entirely conventional shape, best enveloping the lower part of the periphery of said screw 11; the spacing between the cradle 8 and the periphery of the screw 11 is then constant or substantially constant, of the order of 10 to 20 mm for example. In an alternative embodiment, this spacing may be slightly increasing, taking account of the direction of rotation of the screw. Figures 3 and 4 detail a possible embodiment of the above-mentioned progressive opening discharge section.
La figure 3 est une vue en coupe transversale de la machine au niveau de l'ouverture de distribution 17 associée à la trappe mobile 18 ; et la figure 4 est une vue agrandie d'une partie de la figure 3, illustrant l'invention de manière détaillée. Comme on peut le voir sur la coupe de la figure 4, à partir de l'arête 9 constituant la ligne de liaison du berceau de rotor 7 et du berceau de vis 8, le berceau 8 suit la périphérie de la vis 11 sensiblement jusqu'à la ligne repérée 20 ; ensuite, à partir de cette ligne 20, le berceau 8a s'écarte progressivement de la périphérie de la vis 11 , jusqu'à la bordure inférieure 17a de l'orifice de distributionFigure 3 is a cross-sectional view of the machine at the dispensing opening 17 associated with the movable hatch 18; and Figure 4 is an enlarged view of part of Figure 3, illustrating the invention in detail. As can be seen in the section of FIG. 4, from the edge 9 constituting the connection line of the rotor cradle 7 and the screw cradle 8, the cradle 8 follows the periphery of the screw 11 substantially up to at the line marked 20; then, from this line 20, the cradle 8a progressively departs from the periphery of the screw 11, to the lower edge 17a of the dispensing orifice
17.17.
Entre les lignes 9 et 20, la portion de berceau 8a est écartée de la périphérie de la vis 11 d'une distance constante ou sensiblement constante de l'ordre de 10 à 20 mm ; entre la ligne 20 et la ligne formée par la bordure inférieure 17a de l'orifice de distribution 17, la distance entre la portion de berceau 8a et la périphérie de la visBetween the lines 9 and 20, the cradle portion 8a is spaced from the periphery of the screw 11 by a constant or substantially constant distance of the order of 10 to 20 mm; between the line 20 and the line formed by the lower edge 17a of the dispensing orifice 17, the distance between the portion of the cradle 8a and the periphery of the screw
11 passe d'environ 10-20 mm à, par exemple, 60 mm. Entre les lignes 20 et 17a, l'espace entre la périphérie de la vis 11 et la portion de berceau 8a définit le début de la section 22 d'évacuation du produit dite « à ouverture progressive ». Cette section 22 à ouverture progressive se prolonge au-delà de la bordure inférieure 17a de l'orifice 17, et même au-delà de la ligne 23 correspondant à l'intersection du plan horizontal P passant par l'axe 11 b de la vis 11 avec la trappe 18, grâce à la forme particulière de la face intérieure de cette trappe d'obturation 18.It goes from about 10-20 mm to, for example, 60 mm. Between the lines 20 and 17a, the space between the periphery of the screw 11 and the cradle portion 8a defines the beginning of the section 22 for discharging the product, known as “with progressive opening”. This section 22 with progressive opening extends beyond the lower edge 17a of the orifice 17, and even beyond the line 23 corresponding to the intersection of the horizontal plane P passing through the axis 11b of the screw 11 with the hatch 18, thanks to the particular shape of the inner face of this shutter hatch 18.
On remarque en effet que la face intérieure de la trappe 18 présente une forme générale courbe qui, en position de trappe fermée, continue de s'écarter progressivement de la spire de la vis 11. En position de trappe fermée, le jeu entre la périphérie de la vis de mélange/distribution 11 et la partie basse de la trappe 18 est d'environ 60 mm, et le jeu correspondant passe à environ 240 mm au niveau de la partie haute de ladite trappe 18 qui. est située bien en aval du plan P précité. Au niveau de cette section 22 d'évacuation à ouverture progressive, le profil du berceau 8a et de la face intérieure de la trappe 18 n'est pas concentrique à l'axe 11 b de la vis 11, mais excentrique ; ce profil est elliptique ou sensiblement elliptique et, comme expliqué ci-dessus, il s'écarte progressivement de la périphérie de la spire de vis afin d'être continuellement dégageant, ceci bien entendu par rapport au sens de rotation de la vis 11 , repéré par la flèche d'orientation 24. Cette conformation particulière optimise la prise en charge du mélange de produits par la vis 11 et son refoulement en direction de la vis de transfert 12. On limite ainsi grandement les phénomènes de bourrage au niveau de la vis de mélange/distribution 11 et on diminue sensiblement la puissance requise pour l'entraînement de cette vis, par rapport aux configurations connues de l'état de la technique. Comme expliqué ci-avant, l'ouverture de la trappe 18, tel qu'illustré sur la figure 5, assure la distribution du produit à l'extérieur de la benne, de manière classique. Tel que cela apparaît sur la figure 6, la trappe mobile 18 peut se présenter sous la forme d'un volet courbe, articulé au niveau de sa bordure supérieure autour d'un axe 25 parallèle à l'axe des vis 11 et 12. Le volet articulé 18 est ici encore manoeuvré au moyen d'un vérin 19. Dans les deux modes de réalisation illustrés sur les figures 1 à 6, la bordure d'extrémité inférieure de l'orifice de distribution 17 est située en aval de l'aplomb de l'axe 11 b de la vis de mélange/distribution 11. Comme on l'a illustré sur la figure 7, dans le cadre d'une trappe 18 articulée, on peut envisager de structurer l'orifice de distribution 17 de telle sorte que sa bordure d'extrémité inférieure 17a soit située sensiblement au niveau de l'aplomb de l'axe 11 b de la vis 11. Cette configuration optimise la sortie du mélange de produits par l'orifice de distribution 17, lorsque la trappe amovible 18 est ouverte. Dans les différents exemples de réalisation illustrés, la section d'évacuation à ouverture progressive 22 s'étend depuis une ligne repérée 20 située entre l'arête 9 et l'aplomb de l'axe 11b de la vis 11, jusqu'à un niveau situé au-delà du plan horizontal P passant par ledit axe 11 b.It is in fact noted that the interior face of the hatch 18 has a generally curved shape which, in the closed hatch position, continues to move away progressively from the turn of the screw 11. In the closed hatch position, the clearance between the periphery of the mixing / dispensing screw 11 and the lower part of the hatch 18 is approximately 60 mm, and the corresponding clearance passes to approximately 240 mm at the upper part of said hatch 18 which. is located well downstream of the above-mentioned plan P At the level of this evacuation section 22 with progressive opening, the profile of the cradle 8a and of the interior face of the hatch 18 is not concentric with the axis 11b of the screw 11, but eccentric; this profile is elliptical or substantially elliptical and, as explained above, it deviates progressively from the periphery of the turn of the screw in order to be continuously releasing, this of course with respect to the direction of rotation of the screw 11, identified by the orientation arrow 24. This particular configuration optimizes the handling of the mixture of products by the screw 11 and its delivery in the direction of the transfer screw 12. This thus greatly limits the phenomena of stuffing at the level of the screw. mixing / dispensing 11 and the power required for driving this screw is considerably reduced, compared to the configurations known from the prior art. As explained above, the opening of the hatch 18, as illustrated in FIG. 5, ensures the distribution of the product outside the bucket, in a conventional manner. As shown in Figure 6, the movable hatch 18 may be in the form of a curved flap, articulated at its upper edge about an axis 25 parallel to the axis of the screws 11 and 12. The hinged flap 18 is here again operated by means of a jack 19. In the two embodiments illustrated in FIGS. 1 to 6, the lower end edge of the dispensing orifice 17 is located downstream of the plumb line of the axis 11b of the mixing / distribution screw 11. As illustrated in FIG. 7, in the context of an articulated hatch 18, it is possible to envisage structuring the distribution orifice 17 in such a way that its lower end edge 17a is located substantially at the level of the plumb of the axis 11b of the screw 11. This configuration optimizes the output of the mixture of products through the dispensing orifice 17, when the removable hatch 18 is open. In the various exemplary embodiments illustrated, the evacuation section with progressive opening 22 extends from a line marked 20 situated between the edge 9 and the vertical alignment of the axis 11b of the screw 11, to a level located beyond the horizontal plane P passing through said axis 11 b.
Dans des variantes de réalisation, l'entrée de cette section 22 peut être située avant ou après cette ligne 20 (en particulier entre l'arête 9 et une zone située entre l'aplomb de l'axe 11b de la vis 11 et la ligne 23 du plan horizontal P), et sa sortie peut être située avant la bordure supérieure 17b dudit orifice 17 (en particulier entre cette bordure supérieure 17b et ladite ligne 23). De préférence, l'entrée de cette section 22 se situe en amont du plan médian situé entre le plan horizontal P et l'aplomb de l'axe de la vis 11. Le profil courbe définissant cette section 22 à ouverture progressive est avantageusement constitué d'une partie fixe 8a prolongeant le berceau de rotor 7 et de la face interne courbe de la trappe 18.In alternative embodiments, the entrance to this section 22 can be located before or after this line 20 (in particular between the edge 9 and a zone located between the vertical axis of the axis 11b of the screw 11 and the line 23 of the horizontal plane P), and its outlet may be located before the upper edge 17b of said orifice 17 (in particular between this upper edge 17b and said line 23). Preferably, the entry of this section 22 is located upstream of the median plane located between the horizontal plane P and the vertical alignment of the axis of the screw 11. The curved profile defining this section 22 with progressive opening advantageously consists of: 'a fixed part 8a extending the rotor cradle 7 and the curved internal face of the hatch 18.
Dans certains cas particuliers, seule la courbure de la face interne de la trappe 18 pourra définir cette section 22 d'évacuation à ouverture progressive, la bordure inférieure de la trappe 18 s' étendant jusqu'à une portion fixe de forme cylindrique centrée sur l'axe 11 b de la vis 11 , voire s' étendant jusqu'à l'arête 9 précitée. In certain particular cases, only the curvature of the internal face of the hatch 18 can define this evacuation section 22 with progressive opening, the lower edge of the hatch 18 extending to a fixed portion of cylindrical shape centered on the axis 11b of the screw 11, or even extending to the aforementioned edge 9.

Claims

- REVENDICATIONS - 1.- Machine mélangeuse distributrice de produits en particulier pour l'alimentation du bétail, laquelle machine est constituée d'une benne (1) munie d'un fond (2) qui s'étend entre des parois latérales (3, 4) et des parois d'extrémités (5, 6), lequel fond (2) comporte un tronçon en forme de berceau (7) enveloppant partiellement un rotor de mélange (10) de grand diamètre qui s'étend longitudinalement jusqu'aux parois d'extrémités (5, 6), lequel berceau (7) est raccordé par une arête (9) à un tronçon en forme de berceau (8) enveloppant partiellement une vis sans fin de mélange/distribution (11), d'axe horizontal (11 b), qui s'étend parallèlement audit rotor (10) pour déplacer lesdits produits d'une extrémité à l'autre dudit fond (2), en allant vers un orifice de distribution (17) associé à une trappe mobile (18), lequel orifice (17) est aménagé sur l'une desdites parois latérales (3), et éventuellement sur une partie dudit berceau (8), à proximité d'une desdites parois d'extrémités (5) de la benne (1), caractérisée en ce que la face intérieure de la trappe (18), et éventuellement la portion (8a) du berceau de vis (8) qui est située en regard de l'orifice de distribution (17), sont conformées de manière, à partir de l'une de leurs lignes (20) parallèle à l'axe (11 b) de ladite vis (11) et située en amont d'une ligne (23) correspondant à l'intersection du plan horizontal (P) passant par ledit axe (11 b) avec la trappe mobile (18), ceci tenant compte du sens de rotation de ladite vis (11) et en position de trappe (18) fermée, à s'écarter progressivement de la périphérie de ladite vis (11), au moins jusqu'audit plan horizontal (P), pour définir une section d'évacuation du produit à ouverture progressive (22), de sorte à limiter les phénomènes de bourrage en regard de ladite trappe mobile (18) lors des phases de mélange des produits, et pour limiter la puissance moteur nécessaire à l'entraînement de ladite vis mélangeuse-distributrice (11). 2.- Machine mélangeuse distributrice de produits selon la revendication 1 , caractérisée en ce que la ligne du berceau de vis (8a) ou de la face interne de la trappe (18), constituant l'entrée de la section d'évacuation à ouverture progressive (22) est située en amont du plan médian situé entre ledit plan horizontal (P) et l'aplomb de l'axe (11b) de la vis (11), tenant compte du sens de rotation de ladite vis (11). 3.- Machine mélangeuse distributrice de produits selon l'une quelconque des revendications 1 ou 2, caractérisée en ce que la ligne (20) du berceau de vis (8a) ou de la face interne de la trappe (18), constituant l'entrée de la section d'évacuation à ouverture progressive (22), est située en amont de l'aplomb de l'axe (11b) de la vis (11), tenant compte du sens de rotation de ladite vis (11). 4.- Machine mélangeuse distributrice de produits selon l'une quelconque des revendications 1 à 3, caractérisée en ce que la ligne (20) constituant l'entrée de la section d'évacuation à ouverture progressive (22) se situe sur l'arête (9) qui relie les deux tronçons en forme de berceau (7 et 8), ou à proximité de cette arête- CLAIMS - 1.- Mixing machine distributing products, in particular for feeding cattle, which machine consists of a bucket (1) provided with a bottom (2) which extends between side walls (3, 4) and end walls (5, 6), which bottom (2) has a cradle-shaped section (7) partially enveloping a large diameter mixing rotor (10) which extends longitudinally to the walls ends (5, 6), which cradle (7) is connected by an edge (9) to a cradle-shaped section (8) partially enveloping a worm mixing / distribution (11), of horizontal axis (11 b), which extends parallel to said rotor (10) to move said products from one end to the other of said bottom (2), going towards a dispensing orifice (17) associated with a movable hatch (18 ), which orifice (17) is arranged on one of said side walls (3), and possibly on part of said cradle (8), proximity to one of said end walls (5) of the bucket (1), characterized in that the inner face of the hatch (18), and possibly the portion (8a) of the screw cradle (8) which is located opposite the dispensing orifice (17), are shaped so, from one of their lines (20) parallel to the axis (11b) of said screw (11) and located upstream of a line (23) corresponding to the intersection of the horizontal plane (P) passing through said axis (11 b) with the movable hatch (18), this taking account of the direction of rotation of said screw (11) and in the hatch position (18) closed, gradually moving away from the periphery of said screw (11), at least up to said horizontal plane (P), to define a section for discharging the product with progressive opening (22), so as to limit the stuffing phenomena facing said movable hatch (18) during the product mixing phases, and to limit the engine power necessary for driving nt of said mixing-dispensing screw (11). 2. Mixing machine distributing products according to claim 1, characterized in that the line of the screw cradle (8a) or of the internal face of the hatch (18), constituting the inlet of the opening evacuation section progressive (22) is located upstream of the median plane located between said horizontal plane (P) and plumb with the axis (11b) of the screw (11), taking into account the direction of rotation of said screw (11). 3. Mixing machine distributing products according to any one of claims 1 or 2, characterized in that the line (20) of the screw cradle (8a) or the internal face of the hatch (18), constituting the inlet of the evacuation section with progressive opening (22), is located upstream of the axis of the axis (11b) of the screw (11), taking into account the direction of rotation of said screw (11). 4. Mixing machine distributing products according to any one of claims 1 to 3, characterized in that the line (20) constituting the inlet of the evacuation section with progressive opening (22) is located on the edge (9) which connects the two cradle-shaped sections (7 and 8), or near this edge
(9). 5.- Machine mélangeuse distributrice de produits selon l'une quelconque des revendications 1 à 4, caractérisée en ce que la section d'évacuation à ouverture progressive (22) s'étend au-delà de la ligne (23) correspondant à l'intersection du plan horizontal (P) passant par l'axe (11 b) de la vis (11) avec la trappe mobile (18). 6.- Machine mélangeuse distributrice de produits selon l'une quelconque des revendications 1 à 5, caractérisée en ce que le jeu entre la périphérie de la vis de mélange/distribution (11) et le berceau (8a) de cette vis ou la face intérieure de la trappe (18) en position fermée, passe d'environ 10 à 20 mm au niveau de la ligne (20) d'entrée de la section d'évacuation à ouverture progressive (22), à environ 120 mm au niveau du plan horizontal (P) passant par l'axe (11b) de ladite vis (11). 7.- Machine mélangeuse distributrice de produits selon l'une quelconque des revendications 1 à 6, caractérisée en ce qu'elle comporte une trappe mobile (18) dont la face intérieure présente une forme générale courbe dont les génératrices s'étendent parallèlement à l'axe (11 b) "de la vis (11). 8.- Machine mélangeuse distributrice de produits selon la revendication 7, caractérisée en ce que le jeu entre la périphérie de la vis (11 ) et la trappe mobile (18) en position fermée, passe d'environ 60 mm au niveau de la partie basse de ladite trappe (18), à environ 240 mm dans la partie haute de ladite trappe (18). 9.- Machine mélangeuse distributrice de produits selon l'une quelconque des revendications 1 à 8, caractérisée en ce que la vis de mélange/distribution (11) est surmontée d'une vis de transfert (12) adaptée pour déplacer les produits longitudinalement dans la benne (1), dans un sens qui est l'inverse de celui induit par ladite vis de mélange/distribution (11), la trappe mobile (18) ayant un profil intérieur courbe adapté de sorte, en position fermée, à orienter les produits provenant de ladite vis de mélange/distribution (11), vers ladite vis de transfert (12). 10.- Machine mélangeuse distributrice de produits selon l'une quelconque des revendications 1 à 9, caractérisée en ce qu'elle comporte un orifice de distribution (17) dont la bordure d'extrémité inférieure (17a) est située sensiblement à l'aplomb de l'axe (11 b) de la vis de mélange/distribution (11), lequel orifice (17) est associé à une trappe mobile (18) montée pivotante, articulée autour d'un axe horizontal (24) situé au niveau de sa bordure d'extrémité supérieure, laquelle trappe (18) est associée à au moins un vérin de manœuvre (19). (9). 5. Mixing machine distributing products according to any one of claims 1 to 4, characterized in that the evacuation section with progressive opening (22) extends beyond the line (23) corresponding to the intersection of the horizontal plane (P) passing through the axis (11b) of the screw (11) with the movable hatch (18). 6. Mixing machine distributing products according to any one of claims 1 to 5, characterized in that the clearance between the periphery of the mixing / distribution screw (11) and the cradle (8a) of this screw or the face inside of the hatch (18) in the closed position, passes from approximately 10 to 20 mm at the level of the inlet line (20) of the evacuation section with progressive opening (22), to approximately 120 mm at the level of the horizontal plane (P) passing through the axis (11b) of said screw (11). 7. Mixing machine distributing products according to any one of claims 1 to 6, characterized in that it comprises a movable hatch (18) whose inner face has a generally curved shape whose generatrices extend parallel to the 'axis (11 b) " of the screw (11). 8. Mixing machine distributing products according to claim 7, characterized in that the clearance between the periphery of the screw (11) and the movable hatch (18) closed position, passes from about 60 mm at the bottom of said hatch (18) to about 240 mm at the top of said hatch (18) 9.- Mixing machine distributing products according to any one of claims 1 to 8, characterized in that the mixing / distribution screw (11) is surmounted by a transfer screw (12) adapted to move the products longitudinally in the bucket (1), in a direction which is opposite to that induced by said mixing / distributing screw on (11), the movable hatch (18) having a curved interior profile adapted so that, in the closed position, to orient the products from said mixing / dispensing screw (11), to said transfer screw (12). 10. Mixing machine distributing products according to any one of claims 1 to 9, characterized in that it comprises a dispensing orifice (17) whose lower end edge (17a) is located substantially vertically of the axis (11 b) of the mixing / distribution screw (11), which orifice (17) is associated with a movable hatch (18) pivotally mounted, articulated around a horizontal axis (24) located at its upper end edge, which hatch (18) is associated with at least one actuating cylinder (19).
EP04805481A 2003-11-18 2004-11-18 Improved machine for product mixing and distribution Withdrawn EP1686847A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0313455A FR2862188B1 (en) 2003-11-18 2003-11-18 IMPROVEMENT TO MACHINERY MACHINES DISTRIBUTING PRODUCTS
PCT/FR2004/002944 WO2005048694A2 (en) 2003-11-18 2004-11-18 Improved machine for product mixing and distribution

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EP1686847A2 true EP1686847A2 (en) 2006-08-09

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EP04805481A Withdrawn EP1686847A2 (en) 2003-11-18 2004-11-18 Improved machine for product mixing and distribution

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EP (1) EP1686847A2 (en)
FR (1) FR2862188B1 (en)
WO (1) WO2005048694A2 (en)

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Publication number Priority date Publication date Assignee Title
GB2446378B (en) * 2007-02-06 2012-03-07 Harry West Prees Ltd Bulk material mixing and distribution apparatus

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Publication number Priority date Publication date Assignee Title
US3672640A (en) 1970-09-02 1972-06-27 Harvey L Crose Mixer
US5143310A (en) 1991-02-08 1992-09-01 Roto-Mix Enterprises, Ltd. Combined hay processor and feed mixer
IT1280611B1 (en) * 1995-11-14 1998-01-23 Seko Spa AUGERS FOR CHOPPER-MIXER-DISTRIBUTOR CARRIAGE FOR FORAGE AND SILAGE OF GRASS AND STRAW WITH A PERFECT PROFILE
FR2820952B1 (en) 2001-02-16 2003-05-16 Lucas Sa G DISTRIBUTOR MIXER OF CATTLE FEED PRODUCTS
FR2820953B1 (en) 2001-02-16 2003-05-16 Lucas Sa G DISTRIBUTOR MIXER FOR LIVESTOCK FEED PRODUCTS

Non-Patent Citations (1)

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Title
See references of WO2005048694A2 *

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WO2005048694B1 (en) 2005-09-29
WO2005048694A3 (en) 2005-07-28
FR2862188B1 (en) 2011-03-04
FR2862188A1 (en) 2005-05-20
WO2005048694A2 (en) 2005-06-02

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