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WO2002042116A1 - Citerne destinee au transport de produits solides en poudre ou en grains, procede de fabrication associe - Google Patents

Citerne destinee au transport de produits solides en poudre ou en grains, procede de fabrication associe Download PDF

Info

Publication number
WO2002042116A1
WO2002042116A1 PCT/IT2001/000589 IT0100589W WO0242116A1 WO 2002042116 A1 WO2002042116 A1 WO 2002042116A1 IT 0100589 W IT0100589 W IT 0100589W WO 0242116 A1 WO0242116 A1 WO 0242116A1
Authority
WO
WIPO (PCT)
Prior art keywords
tanker
phase
sheet
hull
cylindrical body
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.)
Ceased
Application number
PCT/IT2001/000589
Other languages
English (en)
Inventor
Ettore Cigognini
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.)
Imp SpA
Original Assignee
Imp SpA
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 Imp SpA filed Critical Imp SpA
Priority to AU2002222535A priority Critical patent/AU2002222535A1/en
Publication of WO2002042116A1 publication Critical patent/WO2002042116A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P3/00—Vehicles adapted to transport, to carry or to comprise special loads or objects
    • B60P3/22—Tank vehicles
    • B60P3/2205—Constructional features
    • B60P3/221—Assembling, e.g. layout of steel plates or reinforcing arrangements

Definitions

  • the present invention concerns a tanker for the transport of loose products, specially solids in powder or granules, and the relative manufacturing process.
  • tankers are used mainly consisting of a cylindrical hull out of sheet-metal which is intersected with conic elements, and which have the main function of leading the product towards the outlet, so as to evacuate the product with the sole help of compressed air.
  • said hull is realized having the mainly cylindrical area in the central portion, being linked to the ends with the discharge feedbox having a truncated cone shape, and front and back closing covers.
  • Such a shape allows to resist to the pressures of the load onto the structure and to optimize the useful load volume relating to the external encumbrance of the tanker.
  • a further technique provides the use of spherical sections with large bending radius, welded head-to-head, but the consequent loss of useful cubage of the tanker has suggested to abandon said technique.
  • the first two techniques still imply some disadvantages, mainly consisting of the need of locally reinforcing the container by means of additional elements or by using great local thickness.
  • the aim of the present invention consist in realizing a tanker with a strong hull, that can resist to pressures without having recourse to weight increase.
  • the aims set forth are reached according to the present invention, consisting of a tanker for the transport of solids in powder or granules, comprising a hull out of sheet-metal being formed by a cylindrical body and at least one conical feedbox, wherein said hull comprises at least one cover having a surface with a bending radius variable in continuity and that may work as a connection between said cylindrical body and said conical feedbox.
  • the manufacturing process of said element having a surface with a bending radius variable in continuity comprises at least one phase of pressing of the sheet-metal with a hydraulic press and a mould in three parts: a die, a punch and a sheet press.
  • the advantages obtained by means of such a product mainly consist in that the used of a linking element with the variable radius surface allows the head-to-head connection of the single elements; it allows to maintain the thickness of the cylindrical plating and of the truncated cone feedbox, also for the connecting element; it allows to optimize the useful cubing of the tanker with equal encumbrance volume; and, finally, it allows to realize a strong and light hull with elements easy to connect and with a shape that can resist to the same stresses in all parts of the structure, thus eliminating areas with differentiated thickness.
  • the use of the manufacturing process comprises at least one pressing phase and this has allowed reaching above mentioned purposes.
  • Figure 1 shows a perspective view of a tanker for the transport of solid products in powder or granules, according to the present invention.
  • Figures 2, 3 and 4 show the same tanker respectively in a side, front and top view.
  • Figures 5 and 6 show the internal and external half-cones forming the discharge feedboxes of the tanker, and in particular in a section the relative welding for connecting the two half-elements.
  • Figure 7 shows, in different positions, a segment of sheet- metal forming half cover with a bending radius variable in continuity.
  • Figure 8 shows, in different positions, the cover connecting the cylindrical central plating of the tanker and the truncated cone discharge feedboxes, comprising two segments welded as shown by the detail in square section.
  • Figure 9 shows a scheme of a diagram of the flow of the phases of the manufacturing process of the sheet-metals of the tanker having a surface with variable bending radius.
  • the tanker according to the present invention mainly comprises:
  • the cylindrical body comprises a plurality of sheet- metals la having a thickness preferably of 4.5 mm, bent to a cylindrical surface with a maximum diameter of preferably 2,550 mm and welded head-to-head.
  • the cylindrical body 1 is separated into two chambers by an inner square bulkhead 4.
  • the two discharge feedboxes 2 comprise an inner half-cone 2a and an outer half-cone 2b, linked by a head-to-head welding. These two half-cones are in turn advantageously consisting of two quarter-cones 2a' 5 2a" and 2b', 2b", also joined by head- to-head welding, whereby said quarter-cones are obtained by folding sheet-metals preferably of a thickness of 4.5 mm.
  • the quarter-cones 2a' and 2a" comprise two surfaces with a respectively conical and mixed bending, separated by a radius change line 5, and which allow the connection with the half- cone 2b and with the cylindrical body 1 of the tanker.
  • the quarter-cones 2b' and 2b" comprise two surfaces with a respectively conical and mixed bending, separated by a radius change line 6, and which allow the connection with the half- cone 2a, with the cylindrical body 1 and with the covers 3.
  • Said covers 3 have a curved surface with a radius variable in continuity, so as to allow the connection with the cylindrical body as well as with the conical feedboxes, and also to resist to the pressure of the load by distributing the stresses in a substantially uniform manner on all points of the sheet-metal.
  • connection covers 3 further comprise each two symmetric segments 3 a and 3b connected one to another by a head-to- head welding, according to the scheme of figure 8.
  • all sheets forming the resistant structure of the tanker have a uniform thickness of 4.5 mm and are preferably out of alloy aluminium of the kind 5083, and the obtained structure may resist a operation pressure of 2 bar.
  • the process for the manufacturing of the tanker, especially of the connection covers 3, mainly comprises the following working phases, according to the flow scheme of figure 9:
  • - SF pressing the shape of the sheet, by means of a hydraulic press of 750 t - 1000 t, and with a mould in three parts: a die, a punch and a sheet press, for obtaining segments 3 a and 3b;
  • - Cl trimming control and passing to following phase R in case a trimming is required, or otherwise to phase C2;
  • - R trimming by cutting with high definition laser/plasma in a three axis robotized system;
  • - C2 control of the single segments on a tridimensional dima, and - with positive results - passing to the following phase SS or otherwise return to the phase SR;
  • - C3 a checking in tridimensional dima of the cover 3 and - with positive results - passing to the following phase SC or otherwise return to phase PC;

Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Powder Metallurgy (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

L'invention concerne une citerne destinée au transport de produits solides en poudre ou en grains, comprenant une coque de tôle consistant en un corps cylindrique (1) et en au moins un régulateur d'alimentation (2) conique. La coque susmentionnée comprend au moins un couvercle (3) comprenant une surface présentant un rayon de cintrage variable en continu, servant de raccordement entre le corps cylindrique (1) et le régulateur d'alimentation (2). Le procédé de fabrication de cette citerne comprend au moins une phase de pressage d'un moule à l'aide d'une presse hydraulique pour tôle, pour obtenir des segments (3a, 3b) comprenant des surfaces présentant un rayon de cintrage variable en continu, lesquels segments sont assemblés par un soudage tête-à-tête.
PCT/IT2001/000589 2000-11-23 2001-11-22 Citerne destinee au transport de produits solides en poudre ou en grains, procede de fabrication associe Ceased WO2002042116A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002222535A AU2002222535A1 (en) 2000-11-23 2001-11-22 A tanker for the transport of solid products in powder or in granules, and relative manufacturing process

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000015A ITCR20000015A1 (it) 2000-11-23 2000-11-23 Cisterna per trasporto di prodotti solidi in polvere o granuli e relativo procedimento di fabbricazione.
ITCR2000A000015 2000-11-23

Publications (1)

Publication Number Publication Date
WO2002042116A1 true WO2002042116A1 (fr) 2002-05-30

Family

ID=11441308

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2001/000589 Ceased WO2002042116A1 (fr) 2000-11-23 2001-11-22 Citerne destinee au transport de produits solides en poudre ou en grains, procede de fabrication associe

Country Status (3)

Country Link
AU (1) AU2002222535A1 (fr)
IT (1) ITCR20000015A1 (fr)
WO (1) WO2002042116A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1772310A1 (fr) * 2005-10-06 2007-04-11 Vincenzo Munzio Structure de trémie
WO2009000767A3 (fr) * 2007-06-23 2009-02-12 Hermanns Silo Gmbh Glissoir encastrable pour un véhicule-silo et véhicule-silo pourvu d'un tel glissoir

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3419310A (en) * 1966-07-23 1968-12-31 Ludwig Spitzer Sen Fahrzeugwer Pressure-retentive receptacle, especially for bulk-carrying vehicles
DE3814108A1 (de) * 1988-04-26 1990-02-08 Componenta Interconsult Ab Transportbehaelter
EP0785046A1 (fr) * 1996-01-19 1997-07-23 Merceron M.G.D. M.C.C.R. Procédé de conception et d'industrialisation d'une structure sensiblement rigide en forme d'enveloppe contenante telle que citerne routière
EP1080989A2 (fr) * 1999-08-30 2001-03-07 Spitzer Silo-Fahrzeugwerke GmbH & Co. KG Récipient sous pression

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3419310A (en) * 1966-07-23 1968-12-31 Ludwig Spitzer Sen Fahrzeugwer Pressure-retentive receptacle, especially for bulk-carrying vehicles
DE3814108A1 (de) * 1988-04-26 1990-02-08 Componenta Interconsult Ab Transportbehaelter
EP0785046A1 (fr) * 1996-01-19 1997-07-23 Merceron M.G.D. M.C.C.R. Procédé de conception et d'industrialisation d'une structure sensiblement rigide en forme d'enveloppe contenante telle que citerne routière
EP1080989A2 (fr) * 1999-08-30 2001-03-07 Spitzer Silo-Fahrzeugwerke GmbH & Co. KG Récipient sous pression

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1772310A1 (fr) * 2005-10-06 2007-04-11 Vincenzo Munzio Structure de trémie
WO2009000767A3 (fr) * 2007-06-23 2009-02-12 Hermanns Silo Gmbh Glissoir encastrable pour un véhicule-silo et véhicule-silo pourvu d'un tel glissoir

Also Published As

Publication number Publication date
AU2002222535A1 (en) 2002-06-03
ITCR20000015A1 (it) 2002-05-23
ITCR20000015A0 (it) 2000-11-23

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