EP3728078B1 - Ensemble silo à structure porteuse - Google Patents

Ensemble silo à structure porteuse Download PDF

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Publication number
EP3728078B1
EP3728078B1 EP18827225.6A EP18827225A EP3728078B1 EP 3728078 B1 EP3728078 B1 EP 3728078B1 EP 18827225 A EP18827225 A EP 18827225A EP 3728078 B1 EP3728078 B1 EP 3728078B1
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EP
European Patent Office
Prior art keywords
silo
leg
group
bottom plate
silo group
Prior art date
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Active
Application number
EP18827225.6A
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German (de)
English (en)
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EP3728078A1 (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.)
Finsilos Srl
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Finsilos Srl
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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 silo group is positioned in an elevated position wherein the bottom is distant from the ground.
  • silo groups with legs directly engaged at the bottom of the silo body and that extend in height to engage the ground plane while maintaining said silo body elevated with the bottom distal from the ground.
  • the typical problem in such silo groups relates to the complex design of such legs that engage the bottom in such a way as to support the static and 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 way in which the legs and the bottom engage is also particularly problematic. Examples of solutions of silo groups having said problems are known in documents DE10109294 , US638280 and EP3147429 .
  • 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.
  • a silo group is indicated collectively at 900.
  • 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 frustoconical-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 radial 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 with the annular base surface 25 a substantially 45° angle and with the leg 5 a substantially 45° angle.
  • 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 with the leg 5 a substantially 45° angle and with the parallel beam 3 a substantially 45° angle.
  • 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 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 by the respective leg 5, in particular by the lower plate 52.
  • the leg 5 is therefore axially spaced from said bottom plate 510 defining with it an operating region S.
  • the lower plate 52 and the bottom plate 510 are mutually engaged by means of said centering elements 550.
  • 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 mounted.
  • 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.

Landscapes

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

Claims (14)

  1. Ensemble silo (900) comprenant un corps de silo (950) s'étendant en longueur autour d'un axe de silo (X-X) entre un fond (951) et un sommet (952), l'ensemble silo (900) comprenant une structure porteuse (1) qui vient en prise avec ledit fond (951) pour supporter l'ensemble silo (900) sur un plan de sol (T) en positionnant le corps de silo (950) dans une position surélevée par rapport audit plan de sol (T), la structure porteuse (1) comprenant :
    - un élément porteur annulaire (2) ayant une extension circonférentielle concentrique par rapport à l'axe de silo (X-X), l'élément porteur annulaire (2) comprenant une surface porteuse annulaire (20) sur laquelle repose ladite base (951) et une surface de base annulaire (25) ayant une extension plane de façon à se trouver sur un plan imaginaire (I) sensiblement orthogonal à l'axe de silo (X-X) ;
    - au moins trois pieds de silo (5), de préférence quatre, disposés angulairement équidistants par rapport à l'axe de silo (X-X), en prise avec la surface de base annulaire (25) ayant une extension longitudinale sensiblement parallèle à l'axe de silo (X-X),
    l'ensemble silo (900) étant caractérisé par le fait que la surface annulaire porteuse (20) a une forme telle qu'elle est complémentaire du fond (951), définissant une surface porteuse sensiblement tronconique,
    l'élément porteur annulaire (2) ayant, en section radiale, une forme sensiblement triangulaire, de préférence du type à angle droit, l'hypoténuse étant composée de la surface porteuse annulaire (25) qui est donc inclinée d'un angle égal à celui de l'inclinaison du fond (951).
  2. Ensemble silo (900) selon la revendication 1, caractérisé en ce que la structure porteuse (1) comprend une pluralité de poutres de renforcement parallèles (3), chaque poutre parallèle (3) venant en prise avec deux pieds (5) angulairement consécutifs se trouvant sur un second plan imaginaire (I') sensiblement orthogonal à l'axe de silo (X-X).
  3. Ensemble silo (900) selon l'une quelconque des revendications précédentes, caractérisé en ce que chaque poutre parallèle (3) consiste en une pluralité d'éléments de poutre (3', 3") consécutifs les uns aux autres.
  4. Ensemble silo (900) selon l'une quelconque des revendications précédentes, caractérisé en ce que la structure porteuse (1) comprend une pluralité de poutres de renforcement primaires inclinées (4), chaque poutre primaire inclinée (4) s'étendant entre la surface de base annulaire (25) et un pied (5), définissant un angle sensiblement de 45° avec la surface de base annulaire (25) et un angle sensiblement de 45° avec le pied (5).
  5. Ensemble silo (900) selon la revendication 4 et les revendications 2 ou 3 caractérisé en ce que chaque poutre primaire inclinée (4) est coupée par une poutre parallèle (3).
  6. Ensemble silo (900) selon la revendication 2, caractérisé en ce que la structure porteuse (1) comprend une pluralité de poutres de renforcement inclinées secondaires (4'), chaque poutre inclinée secondaire (4') s'étendant d'un pied (5) à une poutre parallèle (3), définissant un angle sensiblement de 45° avec le pied (5) et un angle sensiblement de 45° avec la poutre parallèle (3).
  7. Ensemble silo (900) selon l'une quelconque des revendications précédentes, caractérisé en ce que chaque pied (5) comprend une plaque supérieure (51) ayant une extension plane pour venir en prise avec la surface de base annulaire (25) et une plaque inférieure (52) pouvant venir en prise avec le plan de sol (T).
  8. Ensemble silo (900) selon l'une quelconque des revendications précédentes, caractérisé en ce que les composants compris dans l'ensemble porteur (1), c'est-à-dire l'élément porteur annulaire (2), les pieds (5), toutes les poutres parallèles (3), toutes les poutres inclinées (4), sont en prise les uns avec les autres par boulonnage et/ou soudage.
  9. Ensemble silo (900) selon l'une quelconque des revendications précédentes, comprenant à chaque pied (5) un système de fixation (500) adapté pour permettre à chaque pied (5) d'être fixé au plan de sol (T), caractérisé en ce que le système de fixation (500) comprend une plaque de fond (510), fixée au plan de sol (T), ayant une extension sensiblement plane parallèle au plan de sol (T), et une pluralité d'éléments de centrage (550), de préférence quatre, qui s'étendent en hauteur à partir de ladite plaque de fond (510) sensiblement parallèlement à l'axe de silo (X-X), et peuvent être mis en prise de manière axialement mobile par le pied (5) respectif de telle sorte que le pied (5) soit centré dans l'axe et espacé axialement de ladite plaque de fond (510), définissant avec celle-ci une région de fonctionnement (S).
  10. Ensemble silo (900) selon la revendication 9, caractérisé en ce que le système de fixation (500) comprend un dispositif de pesage (590), logé dans ladite région de fonctionnement (S), venant en prise avec la plaque de fond (510) et le pied (5), ledit dispositif de pesage (590) comprenant une cellule de charge de compression (591) venant en prise avec le pied (5) et adaptée pour détecter l'action de poussée reçue.
  11. Ensemble silo (900) selon l'une quelconque des revendications 9 ou 10, caractérisé en ce que le système de fixation (500) comprend un dispositif d'amortissement de torsion (580), logé dans ladite région de fonctionnement (S), venant en prise avec la plaque de fond (510) et le pied (5), adapté pour décharger une action de torsion sur le pied (5) vers la plaque de fond (510) de façon à empêcher ladite action d'agir exclusivement sur les éléments de centrage (550).
  12. Ensemble silo (900) selon la revendication 11, caractérisé en ce que le dispositif d'amortissement de torsion (580) comprend au moins un organe d'amortissement (580', 580"), chaque organe d'amortissement comprenant un axe supérieur (581), en prise avec le pied (5), qui s'étend dans une direction axiale, un axe inférieur (582) qui s'étend dans une direction axiale, en prise avec la plaque inférieure (510), et une tige de torsion (585) qui est en prise avec l'axe supérieur (581) et l'axe inférieur (582), adaptée pour transmettre l'action de torsion soutenue par l'axe supérieur (581) et ainsi par le pied (5), à l'axe inférieur (582) et ainsi à la plaque inférieure (510).
  13. Ensemble silo (900) selon la revendication 12, caractérisé en ce que le dispositif d'amortissement de torsion (580) comprend deux organes d'amortissement (580', 580"), les tiges de torsion respectives (585) étant disposées de telle sorte qu'elles fonctionnent avec des actions de torsion dans des directions opposées.
  14. Ensemble silo (900) selon l'une quelconque des revendications précédentes, caractérisé en ce que le corps de silo (950) est de forme cylindrique comprenant une pluralité de viroles en acier empilées axialement, adaptées pour le stockage de matériau granulaire ou particulaire.
EP18827225.6A 2017-12-21 2018-11-22 Ensemble silo à structure porteuse Active EP3728078B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT201700148081 2017-12-21
PCT/IB2018/059233 WO2019123050A1 (fr) 2017-12-21 2018-11-22 Ensemble silo à structure porteuse

Publications (2)

Publication Number Publication Date
EP3728078A1 EP3728078A1 (fr) 2020-10-28
EP3728078B1 true EP3728078B1 (fr) 2022-11-16

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WO (1) WO2019123050A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102517543B1 (ko) * 2020-11-04 2023-04-05 (주)필택산업 저장부처리시스템의 지지대

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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WO2019123050A1 (fr) 2019-06-27
EP3728078A1 (fr) 2020-10-28

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