EP3728077B1 - Groupe de silo avec système de fixation - Google Patents

Groupe de silo avec système de fixation Download PDF

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Publication number
EP3728077B1
EP3728077B1 EP18822489.3A EP18822489A EP3728077B1 EP 3728077 B1 EP3728077 B1 EP 3728077B1 EP 18822489 A EP18822489 A EP 18822489A EP 3728077 B1 EP3728077 B1 EP 3728077B1
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EP
European Patent Office
Prior art keywords
silo
leg
group
silo group
bottom plate
Prior art date
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Active
Application number
EP18822489.3A
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German (de)
English (en)
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EP3728077A1 (fr
Inventor
Stefano LORANDI
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.)
Lorandi Silos Srl
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Lorandi Silos Srl
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Publication of EP3728077A1 publication Critical patent/EP3728077A1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D88/00—Large containers
    • B65D88/26—Hoppers, i.e. containers having funnel-shaped discharge sections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/12—Supports

Definitions

  • the present invention refers to a silo group.
  • Such bulk material in granular or particle form is food grade, referring, for example, to flours, sugar, milk powder, etc.
  • such bulk material in granular or particle form is of the inorganic type, referring, for example, to plastic type material.
  • large silo groups refers to silo groups with a diameter of 1 to 2 meters, but also to silo groups with a diameter of 4 to 6 meters. Preferably, such silo groups are between 12 and 16 meters high, but also between 18 and 20 meters high.
  • silo groups having the aforementioned features are known.
  • such silo groups have a silo body that extends axially between a bottom and a top wherein the stored bulk material is recovered from said bottom.
  • the bottom of the silo group is positioned in an elevated position wherein the bottom is distal from the ground.
  • silo groups with legs that are specifically suited to engage the ground plane while keeping the silo body raised with the bottom distal from the ground.
  • An example of a solution of a silo group is known in document DE10109294 .
  • the typical problem in such silo groups relates to the complex design of such legs that must be suitable to engage said ground plane in order to best discharge both the action due to static loads and that due to dynamic loads acting on the silo group both in a configuration wherein it is empty and in configurations wherein it is full or partially full of bulk material.
  • the object of the present invention is therefore to have a silo group that fully resolves the aforesaid problem, typical of the solutions of the state of the art, preferably being particularly suitable to discharge the action of the aforesaid loads to the ground.
  • silo group 900 extends in a preferential direction, which, with the silo group mounted, corresponds to the height, defining a preferred silo axis X-X.
  • the silo group 900 comprises a silo body 950 extending around said silo axis X-X.
  • the silo body 950 is cylindrical in shape comprising a plurality of axially stacked steel shell rings, suitable for storing granular or particle material.
  • the silo body 950 extends between a bottom 951 and a top 952.
  • the bottom 951 comprises means for unloading the stored material.
  • the top 952 comprises a closing cap.
  • the silo group 900 comprises a support structure 1 that engages said bottom 951 to support the silo group 900 on a ground plane T, positioning the silo body 950 in a position elevated from said ground plane T.
  • the support structure 1 comprises an annular support element 2 suitable to engage the bottom 951.
  • Said annular support element 2 has a concentric circumferential extension with respect to the silo axis X-X.
  • the annular support element 2 is suitable to engage the bottom 951 continuously along a circumference.
  • the annular support element 2 comprises an annular support surface 20 on which rests said bottom 951.
  • the annular support surface 20 is shaped to complement the bottom 951.
  • the annular support surface 20 is inclined according to the inclination of the bottom 951.
  • the annular support surface 20 defines a substantially frusto-conical-shaped support surface.
  • the annular support surface 20 is particularly suitable for supporting conical surfaces.
  • the annular support element 2 is thus suitable to be welded at 360° on the bottom.
  • the annular support element 2 also comprises an annular base surface 25 that has a planar extension so as to lie on an imaginary plane I substantially orthogonal to the silo axis X-X.
  • the annular base surface 25 is a circular planar surface.
  • the annular support element 2 in radial section, has a substantially triangular shape. In other words, in radial section, the annular base surface 25 and the annular support surface 20 have an incident trend. In still other words, in cross-section, the annular support element 2 is tapered towards the silo axis X-X.
  • the annular support element 2 in radial section, has a substantially triangular shape, preferably of the right-angle type wherein the hypotenuse is composed of the annular support surface 25 being thus inclined by an angle equal to that of the inclination of the bottom 951.
  • said triangle is of the isosceles type.
  • the support structure 1 comprises at least three silo legs 5 that extend substantially parallel to the silo axis X-X.
  • Said silo legs 5 are arranged angularly equidistant from the silo axis X-X.
  • the support structure 1 comprises four silo legs 5.
  • each silo leg 5 is engaged to the annular base surface 25.
  • each leg 5 comprises an upper plate 51 having a planar extension to engage the annular base surface 25 and a lower plate 52 engageable to the ground plane T.
  • the upper plate 51 and the lower plate 52 extend in a substantially parallel manner.
  • the upper plate 51 and the lower plate 52 extend orthogonally to the axis of extension (parallel to the silo axis X-X) along which the leg 5 extends.
  • the silo leg 5 extends in length with a box cross-section, preferably a circular cross-section, comprising reinforcing ribs in the connection with the upper plate 51 and with the lower plate 52.
  • the support structure 1 comprises a plurality of parallel reinforcing beams 3 lying on a second imaginary plane I' substantially orthogonal to the silo axis X-X.
  • each parallel beam 3 engages two legs 5 angularly consecutive.
  • each parallel beam 3 is made up of a plurality of consecutive beam elements 3',3".
  • the support structure 1 comprises a plurality of primary inclined reinforcing beams 4.
  • each primary inclined beam 4 extends between the annular base surface 25 and one leg 5.
  • each primary inclined beam 4 defines a substantially 45° angle with the annular base surface 25 and a substantially 45° angle with the leg 5.
  • two primary inclined beams 4 are provided, each operatively connected to a respective leg 5.
  • the engagement on the annular base surface 25 of the two primary inclined beams 4 is carried out substantially in the same portion, i.e. in the middle of the section of the annular base surface 25 delimited by the two legs 5.
  • each primary inclined beam 4 is intersected by a parallel beam 3.
  • the parallel beam 3 divides in half the respective primary inclined beam 4.
  • the primary inclined beam 4 defines on the sides thereof the consecutive beam elements 3',3".
  • the support structure 1 comprises a plurality of secondary inclined reinforcing beams 4'.
  • each secondary inclined beam 4' extends from one leg 5 to one parallel beam 3.
  • each secondary inclined beam 4' defines a substantially 45° angle with the leg 5 and a substantially 45° angle with the parallel beam 3.
  • the secondary inclined beam 4' engages the respective leg in a portion proximal to the upper flange 51 thereof.
  • the secondary inclined beam 4' engages the parallel beam 3 preferably in the engagement portion with the primary inclined beam 4 thereof.
  • the secondary inclined beam 4' engages both the parallel beam 3 and the primary inclined beam 4.
  • the components comprised in the support group 1 and described above, i.e. the annular support element 2, the legs 5, the parallel beams 3, the inclined beams 4, are engaged with each other by bolting and/or welding.
  • the silo group 900 comprises an attachment system 500 suitable to allow the attachment of each leg 5 to the ground plane T.
  • said attachment system 500 engages the lower plate 52 of the silo leg 5.
  • the attachment system 500 comprises a bottom plate 510, attached to the ground plane T, having a substantially planar extension parallel to the ground plane T.
  • said bottom plate 510 also comprises stud elements in such a way as to be cementable to the ground and embeddable in the ground.
  • the attachment system 500 comprises a plurality of centering elements 550 that extend in height from said bottom plate 510 in a manner substantially parallel to the silo axis X-X engageable in an axially movable way by the respective leg 5, in particular by the lower plate 52.
  • the lower plate 52 and the bottom plate 510 are mutually engaged by means of said centering elements 550.
  • the leg 5 is therefore axially spaced from said bottom plate 510 defining with it an operating region S.
  • the centering elements 550 are suitable for keeping said two plates axially aligned with each other.
  • centering elements 550 provided in an attachment system 500.
  • the centering elements 550 are of the screw/bolt type, passing through the lower plate 52.
  • the centering elements 550 comprise a threaded portion 550' with which operate special bolt components 550" arranged on both sides of the lower plate 52.
  • the centering elements 550 are therefore suitable to allow an axial adjustment of the position of the leg 5 by operating on the position of the lower bolt components 550".
  • the centering elements 550 do not undergo any axial action from the leg 5, which is instead completely discharged onto the weighing device 590 described in detail below.
  • the lower plate 52 does not rest on the bolt components 550".
  • said centering elements 550 are positioned so as to lie on the same circumference, angularly equidistant.
  • the center of said circumference corresponds to the center of the respective silo leg 5, engaged with the attachment system 500.
  • the attachment system 500 comprises a weighing device 590 that engages the bottom plate 510 and the leg 5, i.e. the lower plate 52 thereof.
  • the weighing device 590 is therefore housed in the operating region S.
  • the weighing device 590 comprises a compression load cell 591 engaging the leg 5 and suitable to gauge the thrust action received.
  • the weighing device 590 is thus suitable for use in compression, i.e. it is suitable to gauge the axial thrusts present on the leg 5.
  • the compression load cell 591 is positioned in a substantially central position with respect to the leg 5.
  • the compression load cell 591 engages the lower plate 52 of the leg 5 in a coaxial position with the center of said leg 5.
  • the compression load cell 591 is in a position substantially concentric to the imaginary circumference relative to which the centering elements 550 are arranged.
  • the weighing device 590 is removable from the operating region S by sliding it in a substantially planar direction.
  • the weighing device 590 does not require any particular pressure-tight connections between the two plates.
  • the bottom plate 510 comprises a housing into which the weighing device 590 is insertable.
  • the attachment system 500 comprises a torsional damping device 580 suitable to damp the torsional actions present on the leg 5.
  • Said torsional damping device 580 is housed in said operating region S.
  • the torsional damping device 580 engages the bottom plate 510 and the leg 5, i.e. the lower plate 52 thereof, in such a way as to discharge a torsional action on the leg 5 to the bottom plate 510, preventing said action from acting solely on the centering elements 550.
  • the torsional damping device 580 comprises at least one damping member 580', 580".
  • the torsional damping device 580 comprises two damping members 580', 580" suitable to operate with torsional (counter)actions in opposite directions.
  • each damping member comprises an upper pin 581 engaged to the leg 5 that extends in the axial direction.
  • each damping member comprises a lower pin 582 extending in the axial direction engaged to the bottom plate 510.
  • each damping member comprises a torsion rod 585 that engages the upper pin 581 and the lower pin 582, wherein said torsion rod 585 is suitable to transmit the torsional action sustained by the upper pin 581 and thus by the leg 5 to the lower pin 582 and thus to the bottom plate 510.
  • the torsion rod 585 comprises ball joints 585' engaging respectively the upper pin 581 and the lower pin 582 and a tensioning element 585" engaged at said ball joints 585'.
  • the respective torsion rods 585 are arranged in such a way as to operate with torsional actions in opposite directions, for example, positioned in such a way that they are respectively incident to each other.
  • the axial action of the weight force is not only discharged on the weighing device 590 but is also discharged on the centering elements 550; preferably, in such embodiment, the leg 5 rests on the bolt components 550" provided therein. This is also the case in a configuration wherein said weighing device 590 is not disassembled.
  • the silo group achieves its intended purpose by providing a silo group in which the typical problems in the solutions of the state of the art are resolved.
  • the support structure is suitable to support the silo body in a balanced way.
  • the support structure engages the bottom of the silo body at 360°, thus balancing the action of the weight force on the respective legs.
  • the legs of the support structure receive a thrust action in the axial direction.
  • the annular support element "spreads" the action of the silo body to 360°.
  • the attachment structure avoids having areas of the bottom of the silo body more stressed than others, as happens in solutions of the state of the art in which the highest forces are concentrated at the engagement between the leg and bottom.
  • the attachment system is suitable to perform a simple attachment of each leg which is particularly suitable to support both the static and dynamic actions that act on the silo body.
  • the attachment system allows for a simple height adjustment of the respective leg.
  • the attachment system by means of the weighing device, is suitable to evaluate the axial action acting on a leg.
  • the weighing device is suitable to receive the entire axial action of the weight force transmitted by the leg.
  • the attachment system has legs "floating" on said weighing device, centered and safely maintained by the centering elements.
  • the weighing device is housed in the attachment system and is easily removable.
  • the attachment system by means of the torsional damping device, is suitable for also dealing with elevated torsional actions on the leg.
  • the synergistic effects due to the support structure and the attachment system allow an effective operation of the weighing device.
  • the synergistic effects due to the support structure and the attachment system allow an effective operation of the torsional damping device.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)

Claims (15)

  1. Groupe de silo (900) comprenant un corps de silo (950) s'étendant en longueur autour d'un axe de silo (X-X) entre une partie basse (951) et une partie haute (952), dans lequel le groupe de silo (900) comprend une structure de support (1) qui se met en prise avec ladite partie basse (951) pour supporter le groupe de silo (900) sur un plan de sol (T) en positionnant le corps de silo (950) dans une position élevée par rapport audit plan de sol (T), dans lequel la structure de support (1) comprend au moins trois pieds de silo (5), de préférence quatre, agencés équidistants angulairement par rapport à l'axe de silo (X-X), ayant une extension longitudinale sensiblement parallèle à l'axe de silo (X-X), chaque pied (5) comprenant une plaque inférieure (52) sensiblement plane, parallèle au plan de sol (T) ;
    dans lequel le groupe de silo (900) comprend un système de fixation (500) approprié pour permettre à chaque pied (5) d'être fixé au plan de sol (T), dans lequel le système de fixation (500) comprend :
    i) une plaque basse (510), fixée au plan de sol (T), ayant une extension sensiblement plane parallèle au plan de masse (T) ;
    ii) une pluralité d'éléments de centrage (550), de préférence quatre, s'étendant en hauteur à partir de ladite plaque basse (510), sensiblement parallèlement à l'axe de silo (X-X) ;
    dans lequel chacun de ladite pluralité d'éléments de centrage (550) peut être mis en prise d'une manière mobile axialement avec le pied (5) respectif, en particulier avec la plaque inférieure (52), de sorte que le pied (5) soit centré sur un axe et espacé axialement de ladite plaque basse (510) en définissant avec elle une région de fonctionnement (S) ;
    dans lequel le groupe de silo (900) est caractérisé en ce que le système de fixation (500) comprend un dispositif d'amortissement de torsion (580), logé dans ladite région de fonctionnement (S), se mettant en prise avec la plaque basse (510) et le pied (5), approprié pour décharger une action de torsion sur le pied (5) à la plaque basse (510) de manière à empêcher que ladite action n'agisse exclusivement sur les éléments de centrage (550).
  2. Groupe de silo (900) selon la revendication 1, dans lequel lesdits éléments de centrage (550) sont du type vis/boulon à travers la plaque inférieure (52), comprenant une partie filetée (550') avec laquelle fonctionnent des composants boulons (550") spécifiques agencés sur les deux côtés de la plaque inférieure (52), de préférence espacés axialement de celle-ci.
  3. Groupe de silo (900) selon l'une quelconque des revendications précédentes, dans lequel lesdits éléments de centrage (550) sont positionnés de manière à se trouver sur la même circonférence, équidistants angulairement.
  4. Groupe de silo (900) selon l'une quelconque des revendications précédentes, dans lequel le système de fixation (500) comprend un dispositif de pesage (590), logé dans ladite région de fonctionnement (S), se mettant en prise avec la plaque basse (510) et le pied (5), c'est-à-dire la plaque inférieure (52) de celui-ci, dans lequel ledit dispositif de pesage (590) comprend une cellule de charge de compression (591) se mettant en prise avec le pied (5) et adaptée pour jauger l'action de poussée reçue.
  5. Groupe de silo (900) selon la revendication 4, dans lequel la cellule de charge de compression (591) est positionnée dans une position sensiblement centrale par rapport au pied (5).
  6. Groupe de silo (900) selon la revendication 4 ou la revendication 5, dans lequel le dispositif de pesage (590) est amovible de la région de fonctionnement (S) en le retirant par coulissement dans une direction sensiblement plane.
  7. Groupe de silo (900) selon la revendication 1, dans lequel le dispositif d'amortissement de torsion (580) comprend au moins un organe d'amortissement (580', 580"), dans lequel chaque organe d'amortissement comprend une broche supérieure (581), mise en prise avec le pied (5), qui s'étend dans une direction axiale, une broche inférieure (582) qui s'étend dans une direction axiale et mise en prise avec la plaque inférieure (510) et une tige de torsion (585) qui se met en prise avec la broche supérieure (581) et la broche inférieure (582) et qui est appropriée pour transmettre l'action de torsion subie par la broche supérieure (581) et ainsi par le pied (5) à la broche inférieure (582) et ainsi à la plaque basse (510).
  8. Groupe de silo (900) selon la revendication 7, dans lequel ladite tige de torsion (585) comprend des rotules (585') se mettant respectivement en prise avec la broche supérieure (581) et la broche inférieure (582) et un élément tendeur (585") mis en prise avec lesdites rotules (585').
  9. Groupe de silo (900) selon la revendication 7 ou 8, dans lequel le dispositif d'amortissement de torsion (580) comprend deux organes d'amortissement (580', 580"), dans lequel les tiges de torsion (585) respectives sont agencées de manière à fonctionner avec des actions de torsion dans des directions opposées.
  10. Groupe de silo (900) selon l'une quelconque des revendications précédentes, dans lequel la structure de support (1) comprend un élément de support annulaire (2) ayant une extension concentrique circonférentielle par rapport à l'axe de silo (X-X), dans lequel l'élément de support annulaire (2) comprend une surface de support annulaire (20) sur laquelle repose ladite partie basse (951) et une surface de base annulaire (25) ayant une extension plane de manière à se trouver sur un plan imaginaire (I) sensiblement orthogonal à l'axe de silo (X-X) ;
    dans lequel lesdits pieds de silo (5) sont mis en prise avec la surface de base annulaire (25).
  11. Groupe de silo (900) selon la revendication 10, dans lequel la surface de support annulaire (20) a une forme complémentaire de la base (951), de préférence la surface de support annulaire (20) définit une surface de support sensiblement tronconique.
  12. Groupe de silo (900) selon la revendication 10 ou 11, dans lequel la structure de support (1) comprend une pluralité de poutres de renforcement (3) parallèles, dans lequel chaque poutre (3) parallèle, de préférence composée d'une pluralité d'éléments de poutre (3', 3") consécutifs les uns aux autres, se met en prise avec deux pieds (5) consécutifs angulairement, se trouvant sur un second plan imaginaire (I') sensiblement orthogonal à l'axe de silo (X-X).
  13. Groupe de silo (900) selon l'une quelconque des revendications précédentes, dans lequel la structure de support (1) comprend une pluralité de poutres de renforcement inclinées primaires (4), dans lequel chaque poutre inclinée primaire (4) s'étend entre la surface de base annulaire (25) et un pied (5), en définissant un angle sensiblement égal à 45° avec la surface de base annulaire (25) et un angle sensiblement égal à 45° avec le pied (5).
  14. Groupe de silo (900) selon la revendication 12 ou 13, dans lequel la structure de support (1) comprend une pluralité de poutres de renforcement inclinées secondaires (4'), dans lequel chaque poutre inclinée secondaire (4') s'étend depuis un pied (5) jusqu'à une poutre (3) parallèle, en définissant un angle sensiblement égal à 45° avec le pied (5) et un angle sensiblement égal à 45° avec la poutre (3) parallèle.
  15. Groupe de silo (900) selon l'une quelconque des revendications précédentes, dans lequel le corps de silo (950) est de forme cylindrique comprenant une pluralité d'anneaux de coque en acier empilés axialement, appropriés pour stocker des matières granulaires ou particulaires.
EP18822489.3A 2017-12-21 2018-11-22 Groupe de silo avec système de fixation Active EP3728077B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT201700148070 2017-12-21
PCT/IB2018/059232 WO2019123049A1 (fr) 2017-12-21 2018-11-22 Groupe de silo avec système de fixation

Publications (2)

Publication Number Publication Date
EP3728077A1 EP3728077A1 (fr) 2020-10-28
EP3728077B1 true EP3728077B1 (fr) 2024-06-12

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EP18822489.3A Active EP3728077B1 (fr) 2017-12-21 2018-11-22 Groupe de silo avec système de fixation

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EP (1) EP3728077B1 (fr)
WO (1) WO2019123049A1 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US638280A (en) * 1897-06-12 1899-12-05 Dighton A Robinson Grain-bin.
DE10109294C1 (de) * 2001-02-26 2002-05-02 Holten Holzbau Gmbh & Co Kg Silo-Stützelement
US20100193077A1 (en) * 2009-02-03 2010-08-05 Peak Innovations, Inc. Containerized silo
PL414182A1 (pl) * 2015-09-28 2016-07-04 Feerum Spółka Akcyjna Lej silosu z pierścieniem zewnętrznym

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WO2019123049A1 (fr) 2019-06-27
EP3728077A1 (fr) 2020-10-28

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