EP3074324A1 - Récipient fabriqué à partir d'une bande de tôle cintrée en spirale - Google Patents

Récipient fabriqué à partir d'une bande de tôle cintrée en spirale

Info

Publication number
EP3074324A1
EP3074324A1 EP14793019.2A EP14793019A EP3074324A1 EP 3074324 A1 EP3074324 A1 EP 3074324A1 EP 14793019 A EP14793019 A EP 14793019A EP 3074324 A1 EP3074324 A1 EP 3074324A1
Authority
EP
European Patent Office
Prior art keywords
container
metal strip
edge
edge portion
section
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.)
Granted
Application number
EP14793019.2A
Other languages
German (de)
English (en)
Other versions
EP3074324B1 (fr
Inventor
Xaver Lipp
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP3074324A1 publication Critical patent/EP3074324A1/fr
Application granted granted Critical
Publication of EP3074324B1 publication Critical patent/EP3074324B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • B65D88/02—Large containers rigid
    • B65D88/06—Large containers rigid cylindrical
    • B65D88/08—Large containers rigid cylindrical with a vertical axis
    • 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
    • B65D90/02—Wall construction
    • B65D90/029—Wound structures
    • 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
    • B65D90/02—Wall construction
    • B65D90/08—Interconnections of wall parts; Sealing means therefor

Definitions

  • Container made of a helically bent sheet metal strip
  • the invention relates to a container made of a helically bent metal strip container, which can be used, for example, as a storage container for liquid or solid agricultural products or waste or waste biogas reactor.
  • Container diameter shaped corresponding diameter The mutually associated helical blister edges are bent and then connected to each other on the outside of the container by means of a fold.
  • lip-double seam system manufacturing process is a quick and easy manufacture ment of the container with variable diameter and variable height possible.
  • transportable plate bending and assembly devices the container can be produced directly at the desired site.
  • Sheet metal strip is bent outwards and on the outside by a fold connected to the first edge portion. In the vicinity of the joint of the angled edge regions, the sheet metal strip is welded to the inside of the container for the purpose of sealing.
  • the invention is based on the problem of providing a container produced from a helically bent sheet-metal strip, which further increases the range of application of such containers, in particular has a large storage volume and / or increased mechanical stability, while still being easy and quick to produce.
  • the container defined in claim 1.
  • Particular embodiments of the invention are defined in the subclaims.
  • the container is made of a
  • the sheet-metal strip has a first, helically extending edge section, which is curved under the designation of a helically extending deflection edge towards the inside or outside of the container, and wherein the Sheet-metal strip has a second edge portion which opposite to the first edge portion with respect to the longitudinal direction of the sheet metal strip and also extending helically.
  • the second edge portion of the sheet metal strip overlaps a third portion of the sheet metal strip, which is opposite to the first edge portion with respect to the bending edge and adjacent to the Ausbiegekante.
  • the second edge portion and the third portion of the sheet metal strip are welded together in the region of the overlap, wherein the weld extends at least partially into the region between the second edge portion and the third portion of the sheet metal strip.
  • the weld seam is preferably arranged in the region of the bending edge,
  • the bending edge may be partially or even completely covered by the weld.
  • the overlap of the third portion by the second edge portion is preferably a multiple of the sheet thickness of the sheet metal strip, in particular more than two times and preferably more than three times the sheet thickness.
  • Edge section have jewei ls the longitudinal edge of the sheet metal strip.
  • the height of the weld is more than 100%, in particular more than 20% and preferably more than 1 50% of the thickness the sheet metal strip, in particular the thickness of the sheet metal strip in the region of the bending edge.
  • the sheet-metal strip preferably has a constant thickness over its entire extension in the longitudinal and transverse directions. The height of the weld seam ensures that the weld seam does not form a bottleneck for the flow of force, so that it is ensured that the weld seam is tight
  • Weld seam are reliably transferred to the second edge portion without force and thus spikes occur in the region of the weld.
  • Section of the sheet metal strip extends more than 20%, in particular more than 25% and preferably more than 30% of the thickness of the sheet metal strip, in particular the thickness of the sheet metal strip in the region of the weld.
  • forces can also be introduced via the weld into that region of the sheet metal strip, in particular into that region of the third section of the sheet metal strip which has remained substantially mechanically unstressed due to the bending out and the formation of the bending edge. This leads to a significantly increased stability of the welded joint.
  • the welding takes place at least partially in the region of the bending edge, for example, the Ausbiegekante may be partially or even completely covered by the weld.
  • the mechanical stability of the welded joint is further increased, as claimed by the bending, in particular
  • the weld extends into the area in which the second edge portion and the third portion are parallel to each other.
  • the second edge portion and the third portion of the sheet metal strip may be parallel and in particular concentric with each other in the region of the overlap in the circumferential direction, while having a constant distance or even in abutment
  • the second edge portion overlaps the third portion of the sheet metal strip on the inside of the container.
  • the first edge portion may in this case be bent outwards, so that the
  • Ausbiegekante is accessible from the outside and in particular the
  • welding process can be done from outside the container to be produced. This simplifies the manufac turing process, in particular because the welding device does not have to be transported out of the interior of the container to the outside after completion of the production of the container.
  • the second edge portion is at its
  • Edge portion preferably on the inside of the container an obliquely or transversely to the vertical longitudinal axis of the container extending paragraph.
  • Sheet metal sections can be produced.
  • the deflection edge is formed by the first edge section, which has been bent out towards the outside of the container, and which is arranged above the second edge section opposite to the longitudinal direction of the sheet-metal strip. The deflection takes place in
  • Substantially rectangular, and the length of the scalloped portion in one embodiment is more than two times, more preferably more than three times and preferably more than five times the thickness of the sheet metal strip. As a result, the mechanical stability of the container is increased.
  • Edge section can also be particularly easy to attach the outside weld, in particular, the
  • Welding apparatus are guided at an acute angle of preferably more than 20 ° and less than 70 ° relative to the horizontal to the joint of the second edge portion and the bending edge, so that in a simple manner a sufficiently deep weld and thus a sufficiently stable weld can be made ,
  • the third section of the sheet-metal strip adjoining the bending edge in the direction of the second edge section is formed by a crank offset relative to a fourth section of the sheet-metal strip adjoining the offset in the direction of the second edge section bent, in particular bent out to the outside of the container.
  • the second edge portion can be supported on the disposed between the third portion and the fourth portion bend, which further simplifies the production on the one hand and the stability is increased and on the other hand, a perfect fit connection is ensured.
  • the offset caused by the offset radial offset of the second edge portion relative to the fourth portion of the sheet metal strip is less than 95% of the thickness of the sheet metal strip, in particular less than 90% and preferably less than 85%.
  • the second edge section is preferably bent into the interior of the container by a further offset relative to a fifth section of the sheet-metal strip adjoining the offset in the direction of the first edge section.
  • the offset can lie in the region of the radially outward deflection edge of the first edge section.
  • the offset caused by the offset radial offset of the second edge portion relative to the fifth section may be less than 95% of the thickness of the sheet metal strip, in particular less than 90% and preferably less than 85%.
  • the container is surrounded by a stabilization device, which extends from a footprint of the container into the height, and which is frictionally connected at least in sections and / or at discrete positions with the container, in particular in the radial direction is non-positively connected to thereby at least partially absorbing the forces acting on the container.
  • a stabilization device which extends from a footprint of the container into the height, and which is frictionally connected at least in sections and / or at discrete positions with the container, in particular in the radial direction is non-positively connected to thereby at least partially absorbing the forces acting on the container.
  • the stabilization device may extend at least to a portion of the height of the container, in particular more than 20% and preferably more than 30%.
  • the non-positive connection can take place in the circumferential direction and / or in the vertical direction at discrete positions, for example by welding the radially outwardly bent first edge portion with the stabilizing device.
  • the stabilization device can be formed, for example, by a plurality of circumferentially around the container preferably equidistantlyentestel Leten and anchored in the foundation, extending in the vertical direction and in cross-section, for example, U-shaped or triangular in the side view stabilizing elements.
  • the stabilizer is a
  • Outer container formed and the annular space between the container and the outer container may be at least partially and / or at least partially filled with a frictional connection between the container and the outer container providing mass.
  • the gap may be filled with concrete.
  • the container and the outer container can be arranged concentrically on a base plate of the container.
  • FIG. 1 shows a side view of a container according to the invention
  • FIG. 2 is a partial plan view of the container of FIG. 1; FIG.
  • FIG. 3 shows an enlarged view of a section of the side wall of the container of Fig. 1,
  • Fig. 4 shows an enlarged view of a section through the
  • Fig. 6 shows a side view of a third embodiment of
  • FIG. 8 shows an enlarged view of a section of the side wall of the container of Fig. 6,
  • Fig. 10 shows a side view of a fourth embodiment of the
  • Fig. 1 2 shows an enlarged depicting development of a section of a fifth
  • Fig. 1 3 shows an enlarged view of a section of a sixth
  • FIG. 1 shows a side view of a container 10 according to the invention, as it for storing bulk materials from the land and
  • FIG. 2 is a partial plan view of the container of FIG. 1.
  • FIG. 2 is a partial plan view of the container of FIG. 1.
  • the container 10 is on its outside and inside in the
  • the container 10 stands on one
  • a concrete slab foundation 1 which may be round as well as the base of the container 10 in plan view or polygonal as in the embodiment.
  • the cylindrical portion of the container 10 is covered at the top by a conical or frusto-conical roof 2.
  • the preparation of the container 10 is carried out using a
  • the diameter 14 of the container 10 may for example be between 4 m and 20 m or more.
  • the height 16 of the container 10 may be between 2 m and 20 m or more.
  • the capacity of the container 10 may for example be between 1 5 m 3 and 8,000 m 3 .
  • the preferably homogeneous thickness 26 (FIG. 4) of the sheet metal strip 20 is between 2 mm and 14 mm, in the present case may in particular be more than 5 mm, preferably more than 6 mm and less than 12 mm, for example between 8 mm and 10 mm ,
  • the width 18 of the sheet metal strip 20 may be between 20 cm and 100 cm, in particular between 30 cm and 80 cm and preferably between 40 cm and 60 cm; in the illustrated
  • the width 1 8 of the sheet metal strip 20 is about 50 cm.
  • Fig. 3 shows an enlarged view of a section of
  • FIG. 4 Side wall of the container 10 of FIG. 1 and FIG. 4 shows in an enlarged depicting a section through the joint IV of a first embodiment of the container 10 of FIG. 1.
  • the metal strip 20 has an upper longitudinal edge of the metal strip 20 bi ldenden first
  • Edge portion 22 is more than five times and less than ten times, in the exemplary embodiment about seven times, the thickness 26 of the sheet metal strip 20th
  • Deflection edge 24 opposite the first edge portion 22 and adjacent to the bending edge 24 is overlapped on the inside of the container 10 by a second edge portion 32 of the sheet metal strip 20, wherein in the region of the overlap 30, the second edge portion 32 and the third portion 28 substantially parallel to each other run, in particular concentric with respect to the longitudinal axis 1 2 bent and can have a constant distance or even be in contact with each other.
  • the overlap 30 extends in the vertical direction by more than two times, in particular more than three times and preferably more than five times, in the exemplary embodiment about seven times, the thickness 26 of the sheet metal strip 20. In particular, the overlap 30 more than 50% and less than 200% of the radial
  • the third section 28 is offset by a bend 34 with respect to a fourth section 36 of the sheet-metal strip 20 adjoining the offset 34 in the direction of the second edge section 32, in particular displaced radially outward.
  • the clear width of the container 10 in the region of the fourth portion 36 substantially coincides with the clear width in the region of the second edge portion 32, so that the second edge portion 32 on the inside of the container 10 can be supported on the crank 34 or at least the second edge portion 32 and the fourth portion 36 on the inside of the container 10 are aligned.
  • the radial offset of the third portion 28 radially outward relative to the fourth portion 36 may substantially correspond to the thickness 26 of the sheet metal strip 20 or even be slightly smaller, so that the third portion 28 is held in contact with the second edge portion 32, in particular by an elastic deformation of the sheet metal strip 20 in the region of the crank 34.
  • a weld 40 for connecting the second edge portion 32 with the adjacent portion of the sheet metal strip 20, in particular in the region of the Ausbiegekante 24.
  • the weld 40 extends at least partially into the area between the second edge portion 32 and the third portion 28 inside.
  • the height 42 of the weld 40 is in the embodiment more than 250% of the thickness 26 of the sheet metal strip 20 in the region of the Ausbiegekante 24 and thereby ensures a
  • Weld is in the embodiment more than 1 50% of the thickness 26 of the sheet metal strip 20, which also to increase the stability of
  • FIG. 5 shows a second embodiment of the invention in FIG.
  • the metal strip 20 is covered by a thin support 38 and in particular laminated, in
  • the container 10 has an increased resistance to the fillers and is suitable, for example, for drinking water or other foods.
  • the height 46 of the first part of the weld 40, which extends in the region between the second edge portion 32 and the third portion 28 of the sheet metal strip 20, in the exemplary embodiment is more than the thickness 26 of the sheet metal strip 20.
  • the second part 48 of the weld 40th which extends in the adjoining the Ausbiegekante 24 area between the second edge portion 32 and the third portion 28, in the embodiment has a thickness which is more than 30% of the thickness 26 of the sheet metal strip 20. If necessary, the weld 40 can still further in the area between the second
  • Edge portion 32 and the third portion 28 protrude, thereby further increasing the mechanical strength of the welded joint and thus the container 10.
  • connection which extends in the region in which the second edge portion 32 and the third portion 28 parallel to each other, the connection is also made in such a portion of the sheet metal strip 20, which was not or not significantly stressed by the bending out of the first edge portion 22, which increases the mechanical stability of the connection.
  • Fig. 6 shows a side view of a third embodiment of the invention, in which the container 10 may be constructed as described above, but in addition is surrounded by a stabilizer 50 which extends from the foundation 1 in the height and in illustrated embodiment at discrete positions in the circumferential direction around the container 10 is positively connected thereto, thereby at least partially absorb the forces acting on the container 10 forces.
  • Fig. 7 shows a detail of the associated plan view.
  • the stabilization device 50 has a total of eight, in the circumferential direction around the container equidistantly up to a height of about 50% of the container extending stabilizing elements 52, which are respectively punctiform or partially linearly connected to the outside of the container 10.
  • the stabilizing elements 52 are sufficiently anchored in the foundation 1.
  • Fig. 8 shows an enlarged view of a section of
  • FIG. 9 shows a section through a cross-sectionally U-shaped stabilizing element 52nd
  • the stabilizing element 52 consists of a U-shaped iron carrier to which the radially outer end of the first
  • Edge portion 22 is fixed by means of another weld 54.
  • Stabilizing element 52 can be less than 1 5-fold
  • Stabilizing elements 52 results in a high flexural rigidity with respect to forces that occur radially with respect to the longitudinal axis 12 of the container 10.
  • Fig. 10 shows a side view of a fourth embodiment of the invention, and Fig. 1 1 shows an associated partial plan view.
  • the stabilizer 1 50 is similar or identical to the container 10 made of a bent sheet metal strip 1 20 hergestel, in particular the
  • Welded joint for the outer container of the stabilizer 1 50 may be formed as described above for the container 20.
  • the frictional connection between the container 10 and the stabilizer 1 50 can be effected in that the intermediate space 56 between the inner container 10 or its metal band 20 and the outer stabilizer 1 50 or its metal strip 120 by a mass 60 filled therein,
  • FIG. 12 shows an enlarged view of a section of a fifth exemplary embodiment of the invention in the region of the intermediate space 56 between the container 10 and the stabilizer 1 50.
  • the connection of the second edge portion 1 32 with the third portion 128 is performed by a weld 140, which is placed on the end edge of the second edge portion 132.
  • the end edge of the second edge portion 1 32 can this purpose on the inside of the container 1 10 form a shoulder which includes an angle 58 with the vertical, which is less than 90 °, in particular as in the embodiment is about 70 °.
  • the weld seam 140 can be securely placed in the transition region from the second edge section 132 to the third section 1 28 and, in particular due to the acting gravitational force, sinks into the gap between the two sections of the sheet-metal strip 20 to be joined.
  • the weld 140 may otherwise be formed in height and width as previously described in connection with the weld 40.
  • Stabilizer 150 may be made as described above in connection with container 10, in particular
  • weld 141 which may be formed as the previously described weld 40 of the container 10.
  • the space 56 between the container 1 10 and the stabilization device 1 50 is filled as non-positive mass 60 concrete, in particular, the mass 60 using the
  • FIG. 13 shows an enlarged view of a section through a sixth embodiment of the invention, wherein, in contrast to the embodiment of FIG. 12, the container 10 is now as in FIG
  • Fig. 5 Connected with Fig. 5 is described.
  • the container 10 on the inside of a support 38, for example made of stainless steel.
  • the welding takes place both in the container 10 and in the stabilizing device 1 50 radially outwardly through the

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Packages (AREA)

Abstract

L'invention concerne un récipient (10) fabriqué à partir d'une bande de tôle (20) cintrée en spirale. La bande de tôle (20) comporte un premier segment de bord en spirale (22), qui est cintré vers le côté intérieur ou le côté extérieur du récipient (10) en formant un bord de pliage (24) en spirale. La bande de tôle (20) comporte un deuxième segment de bord (32), qui est opposé au premier segment de bord (22) par rapport à la direction longitudinale de la bande de tôle (20) et qui est également en spirale. Selon l'invention, le deuxième segment de bord (32) de la bande de tôle (20) chevauche un troisième segment (28) de la bande de tôle (20), qui est opposé au premier segment de bord (22) par rapport au bord de pliage (24) et adjacent au bord de pliage (24). Le deuxième segment (32) et le troisième segment (28) sont soudés l'un à l'autre dans la zone du chevauchement (30) ; et la soudure (50) s'étend au moins en partie dans la zone située entre le deuxième segment de bande (32) et le troisième segment (28) de la bande de tôle (20).
EP14793019.2A 2013-11-27 2014-10-24 Récipient fabriqué à partir d'une bande de tôle cintrée en spirale Active EP3074324B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013020340.6A DE102013020340A1 (de) 2013-11-27 2013-11-27 Behälter, hergestellt aus einem wendelförmig gebogenen Blechband
PCT/EP2014/002872 WO2015078546A1 (fr) 2013-11-27 2014-10-24 Récipient fabriqué à partir d'une bande de tôle cintrée en spirale

Publications (2)

Publication Number Publication Date
EP3074324A1 true EP3074324A1 (fr) 2016-10-05
EP3074324B1 EP3074324B1 (fr) 2017-08-16

Family

ID=51846610

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14793019.2A Active EP3074324B1 (fr) 2013-11-27 2014-10-24 Récipient fabriqué à partir d'une bande de tôle cintrée en spirale

Country Status (7)

Country Link
US (1) US11078011B2 (fr)
EP (1) EP3074324B1 (fr)
CN (1) CN105793172B (fr)
DE (1) DE102013020340A1 (fr)
ES (1) ES2647541T3 (fr)
MY (1) MY177903A (fr)
WO (1) WO2015078546A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL3189906T3 (pl) * 2016-01-11 2019-09-30 Xaver Lipp Urządzenie do wytwarzania cylindrycznego zbiornika o dużej średnicy, w szczególności silosu
EP3189908B1 (fr) * 2016-01-11 2019-04-24 Xaver Lipp Dispositif de production d'un recipient cylindrique a grand diametre, en particulier un silo
IT201800007922A1 (it) * 2018-08-07 2020-02-07 Patrizia Biasior Serbatoio in lamiera metallica

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US3078818A (en) * 1960-04-19 1963-02-26 American Pipe & Constr Co Method of compensating for the effect of cambered strip stock in making helical seam metal tubing
US3380147A (en) * 1966-03-25 1968-04-30 Eldon O. Mcdonald Method of making a circular building structure
DE2250239C3 (de) 1972-10-13 1980-09-11 Silo Verfahrens Ag, Zug (Schweiz) Maschine zum Herstellen eines Rohres großen Durchmessers, insbesondere eines Silos
US4074847A (en) * 1976-09-20 1978-02-21 Anchortank, Inc. Welded storage tank construction including a structural fin
US4337600A (en) * 1980-04-11 1982-07-06 Hansen Elmer K Helical storage bin
AT374877B (de) * 1981-10-19 1984-06-12 Walter Freller Speicher
US5476210A (en) * 1993-06-25 1995-12-19 Fuji Jukogyo Kabushiki Kaisha Structure for joining plate elements and method for joining the same
US6138861A (en) * 1996-10-23 2000-10-31 Palazzo; David T. Method of making a multiple wall storage tank having an extruded outer jacket bonded around an aperture
DE19939180A1 (de) 1999-08-20 2001-02-22 Hydro Elek K Gmbh Zylindrischer Behälter sowie Verfahren und Vorrichtung zur Herstellung eines zylindrischen Behälters
DE202004015154U1 (de) * 2004-09-27 2005-02-24 Riemer, Oliver Doppelwandige Abrollbehälter
US8979416B2 (en) * 2012-01-16 2015-03-17 Toyota Jidosha Kabushiki Kaisha Panel joint structure
DE102012018935A1 (de) * 2012-09-26 2014-03-27 Xaver Lipp Behälter, hergestellt aus einem einlagigen, wendelförmig gebogenen Blechband
CN102923401B (zh) * 2012-10-24 2015-03-18 三一重工股份有限公司 粉料罐及具有粉料罐的搅拌站

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Also Published As

Publication number Publication date
WO2015078546A1 (fr) 2015-06-04
CN105793172A (zh) 2016-07-20
MY177903A (en) 2020-09-24
EP3074324B1 (fr) 2017-08-16
US11078011B2 (en) 2021-08-03
DE102013020340A1 (de) 2015-05-28
ES2647541T3 (es) 2017-12-22
CN105793172B (zh) 2018-11-09
US20160272415A1 (en) 2016-09-22

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