• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to a pallet container (10) having a thin-walled inner container (12) made of thermoplastic material for storing and transporting liquid or flowable filling materials, having a lattice profile supporting casing (14) that closely encloses the inner container (12) as a supporting casing, and having a base pallet (16) on which the inner container (12) rests and to which the lattice profile supporting casing (14) is firmly connected, wherein the lattice profile supporting casing (14) comprises intersecting vertical (20) and horizontal (22) profile rods which are connected together at their intersecting points by mechanical joining, such as clinching or punch riveting, and wherein the profile rods (20, 22) are additionally fixed in a rotationally secure manner at their connecting points (18, 24, 26) via a mechanical form fit (42, 43) or a form-fitting bearing region (42, 43).
    公开号:AU2013224446A1
    申请号:U2013224446
    申请日:2013-02-19
    公开日:2014-09-04
    发明作者:Dietmar Przytulla
    申请人:Mauser Werke GmbH；
    IPC主号:B65D77-04
    专利说明:
    WO 2013/124051 PCT/EP2013/000477 1 Pallet container The invention relates to a pallet container having a 5 thin-walled rigid inner container made of thermoplastic material for the storage and transportation of liquid or free-flowing contents, having a lattice frame, which, as supporting casing, closely encloses the inner container, and having a base pallet, on which the inner 10 container rests and to which the lattice frame is fixed, wherein the lattice frame comprises vertical and horizontal profile bars which are fixed to one another at the crossover points. 15 Prior art Pallet containers are used for the transportation and storage of liquid or free-flowing, in some cases hazardous, contents. During the transportation of 20 filled pallet containers - in particular in the case of contents with a high relative density and of the pallet containers being stacked - on poor roads - using trucks with stiff suspension, or during transportation by rail or sea, the lattice frames are subjected to 25 considerable loading. This transportation-induced loading, on account of the stack load in the case of pallet containers being stacked, subjects the lattice frame to compressive loading in the axial direction and, as a result of sustained dynamic surge movements 30 emanating from the liquid contents, additionally subjects the usually welded lattice frame to reversed bending loading in the radial direction. The weld connections or the weld regions of the crossover points of the vertical and horizontal lattice bars or lattice 35 tubes are the points subject to the highest stressing. Such stressing, following a certain period of time, can result in the weld connections or the lattice tubes rupturing, and this therefore means the necessary level WO 2013/124051 PCT/EP2013/000477 2 of reliability for stacking and transporting such pallet containers is no longer assured. All the known pallet containers with tubular lattice 5 frames have weld connections at the crossover points of the tubular bars; in the case of some pallet containers, for the purpose of relieving the weld regions of loading, bending points which are elastic to a limited extend are formed in the tubular bars 10 alongside the weld spots. Pallet containers with a welded tubular lattice frame are known in general, for example from EP 0 734 967 A (Sch) . The tubular lattice frame of the 15 pallet container known from this document comprises a round-tube profile which, at the welded crossover points, is indented to a pronounced extent in the form a hollow and therefore, with the tubes crossed over, forms four points of contact for the mutual welding. 20 The bending points which are elastic to a limited extent are produced by way of additional depressions of the weld-hollow end regions. EP 0 755 863 Al (Fust) discloses another pallet 25 container, of which the lattice bars have a square-tube profile which is pushed in partially to a slight extent, merely in the crossover region, for better welding and thus forms the four points of contact for the welding. The tube profile otherwise, over its 30 entire length between the crossover points, has a constant cross section without any concavities. DE 196 42 242 Al (Rot) discloses a further pallet container, having a lattice frame made of open 35 trapezoidal profile bars and a profile which is constant over the length of each bar. The four weld spots at the crossover points are achieved here by the WO 2013/124051 PCT/EP2013/000477 3 outwardly flattened planar surfaces of the profile bars. Another pallet container having a continuous tube 5 profile throughout is known from US 6,244,453 B1 (Mam). The four weld spots at the crossover points of the bars are achieved here by the continuous two-sided or four sided square-profile depressions with longitudinal ribs on the outside. 10 EP 1 289 852 (Mau) discloses a further pallet container, of which the lattice bars have a trapezoidal tube profile and four weld spots in the crossover region. Concavities, which act as predetermined bending 15 points, are made, in the region alongside the crossover points of the tubular bars, on that side of the tubes which is located opposite the weld region. Another pallet container having four weld spots in the 20 crossover region of the tubular bars is known from EP 1 618 047 B1 (Mau) . The elasticity behavior of the tubular lattice frame is achieved here by a reduction in the cross-sectional height of the tubes between or outside the welded crossover points. 25 DE A 10 2010 033 738 1 (R. Bu) discloses another pallet container, of which the lattice cage is characterized in that the crossed profile bars of the cage are fixed in relation to one another by punch riveting, TOX 30 clinching or straightforward clinching a force-fitting and form-fitting, fatigue-resistant joining connection. Another pallet container with spot-weld connections and clinched connections between the ends of the vertical 35 profile bars of the lattice-profile supporting casing and the upper horizontal profile bar is also known from DE A 10 2005 031 940 (Sch).
    WO 2013/124051 PCT/EP2013/000477 4 Disadvantages of the prior art The hitherto known tubular lattice frames having a uniform lattice-tube profile throughout and two or four 5 weld spots at the crossover points all have the disadvantage that the horizontal and vertical tubular lattice bars, during transportation of the filled pallet containers, reversed bending stress overall become flexurally and torsionally rigid. Even after a 10 comparatively short period of stressing, this results in fatigue cracks and rupturing of the bars, in particular in the vicinity of the welded crossover points of the lattice bars, or the weld spots of the crossover points rupture and break off. 15 In the case of double stacking of pallet containers, in particular the attachment between the upper horizontal profile bar and the vertical profile bars is a weak point. 20 Those tubular lattice frames having welded round tubes with four weld spots, e.g. known from EP 0 734 967 A2 (Sch), and having a considerably reduced cross-sectional height of the tubes in the 25 region of the crossover points (no continuous tube profile, indentations of the same depth overall and/or a reduced cross-sectional height of the tubes at the crossover points of the bars) have the disadvantage that considerable loading peaks occur in these regions 30 of reduced tube cross section and, as a result, predetermined breaking or buckling points are, as it were, pre-programmed e.g. in the case of drop tests, in the case of hydraulic internal pressure tests and in the case of reversed bending stress due to 35 transportation-induced loading. Those known tubular lattice frames having four weld spots in the crossover region of the tubular bars and WO 2013/124051 PCT/EP2013/000477 5 adjacent problematic predetermined bending points or predetermined bending regions - known from EP 1 289 852 and EP 1 618 047 - have the disadvantage that the tubular-bar regions are not subjected to uniform 5 loading and it is only the regions of reduced tubular bar cross section which have to absorb the reversed bending stress due to transportation-induced loading. It is necessary, in principle, for all the tubular bars 10 of the tubular lattice frames with predetermined bending points in the starting profile to be over dimensioned, because it is only the reduced tubular-bar cross-sectional height of the predetermined bending points which absorbs the reversed bending stress, but 15 this reduces the static loading capability of the tubular lattice frame as a whole. All the known pallet containers having welded tubular lattice frames or having welded wire lattices as a 20 supporting casing have the following disadvantages: The welding method used is resistance welding, a straightforward welding method with a high level of energy consumption; not all materials can be welded by 25 resistance welding and, during long periods of transportation, the bending surge loading which occurs can result in the weld seams rupturing. Those tubular lattice frames having spot-weld 30 connections and a further clinch connection between the ends of the vertical profile bars of the lattice profile supporting casing and the uppermost horizontal profile bar - known for example from DE 10 2005 031 940 - quite apart from involving disadvantageous spot 35 welding, do not have any additional mechanical form fitting connections at the other crossover points of the vertical and horizontal profile bars of the tubular lattice frame.
    WO 2013/124051 PCT/EP2013/000477 6 Those known tubular lattice frames made of cage-forming bar profiles which form so-called joining connections by punch riveting, TOX clinching or straightforward 5 clinching have the following disadvantages: If the profiles used for the tubular lattice frame are conventional ones with a bar width of 15 to 25 mm, the size or dimensions of the joining connection means that 10 it possible to realize only one joining connection, or a maximum of two joining connections, at each crossover point of the tubular lattice frame, and these joining connections have to absorb the same forces as in the case of a pallet container having a tubular lattice 15 frame with a continuous lattice-tube profile and four weld spots at the crossover points. If use is made of a lattice-tube profile made of a non-metallic material, then the mechanical load-bearing capability of the joining connection is reduced further on account of the 20 poor physical characteristics of the non-metallic material. Object 25 It is an object of the present invention to specify a pallet container of the type in question which has a lattice-profile supporting casing made of fixed profile bars and no longer has the disadvantages of the prior art - account being taken of the stack load caused by a 30 filled pallet container stacked on top (double stacking) in addition to the conventional surge loading caused by the liquid content during transportation. Achieving the object 35 This object is achieved according to the invention by a pallet container having the features of Patent Claim 1.
    WO 2013/124051 PCT/EP2013/000477 7 Dependent claims contain advantageous and expedient developments of the invention. The pallet container for liquids according to the 5 invention having a lattice-profile supporting casing, which, as supporting casing, closely encloses the inner container, and having a base pallet, on which the inner container rests and to which the lattice-profile supporting casing is fixed, wherein the lattice-profile 10 supporting casing, which may be rigid or collapsible, comprises vertical and horizontal profile bars which are fixed to one another at the crossover points, is distinguished by the following advantages: 15 There is no welding at all the connecting locations of the lattice-profile supporting casing, connection takes place by mechanical joining, it is also possible to connect profiles consisting of materials which cannot be subjected to resistance welding, it is possible for 20 example for profile bars made of steel, aluminum, composite materials and plastic to be connected to one another, the connecting zone is not influenced thermally in any way and mechanical joining, by having a lower level of energy consumption, is more cost 25 effective. The profile bars may have different wall thicknesses and be configured in the form of a bar profile, shaped profile or hollow profile. The mechanical joining connections can also be produced without any preliminary perforations, with 30 accessibility on one side. Mechanical joining connections have high dynamic load-bearing capabilities. In addition, the profile bars are locked in relation to 35 one another at their crossover points by a mechanical form fit, and are supported mechanically at the lattice-profile crossover joints of the upper and lower horizontal profile bar, in order to relieve the clinch WO 2013/124051 PCT/EP2013/000477 8 or punch riveting joining connections of loading. In the case of a mechanical joining connection per lattice-profile crossover joint, in particular in the case of foldable or collapsible lattice-profile 5 supporting casings comprising separate side parts, this mechanical form fit also reinforces the design strength thereof. In the case of double stacking of the pallet 10 containers, the stack load caused by the pallet container stacked on top has to be absorbed by the upper horizontal profile bar of the lattice-profile supporting casing and transferred to the base pallet via the vertical profile bars and the lower horizontal 15 profile bar. The punch rivet, clinch rivet or clinch joining connections are effectively relieved of the stack loading here by additional bearing surfaces on the upper and lower lattice-profile crossover joints. 20 In one embodiment of the invention, the lattice-profile supporting casing of a pallet container may be of collapsible or foldable configuration. With the same surface area at the base, the pallet-container height here is reduced to approximately 1/3 of the original 25 height. The advantage with this configuration is that the reduced volume of the collapsed pallet container makes it possible for the transportation costs and the costs for storing the pallet container without an inner container inserted therein to be reduced to a 30 considerable extent. The invention will be described and explained in more detail hereinbelow with reference to exemplary embodiments which are illustrated schematically in the 35 drawings, in which: figure 1 shows a front view of a pallet container according to the invention, WO 2013/124051 PCT/EP2013/000477 9 figure 2 shows a side view of a pallet container according to the invention, figure 3 shows a view of a double-stacked pallet 5 container according to the invention, figure 4 shows a view of a lattice-profile crossover point according to the invention (18 in figure 2), figure 5 shows a section A-B through a vertical 10 profile bar from figure 4, figure 6 shows a section C-D through a lattice-profile crossover point in figure 4 with a mechanical joining connection produced by clinching, figure 7 shows a section C-D through a further 15 lattice-profile crossover point from figure 4 with a mechanical joining connection produced by punch riveting using a semi-tubular rivet, figure 8 shows a section C-D through a further lattice-profile crossover point from figure 4 20 with a mechanical joining connection produced by punch riveting using a solid rivet, figure 9 shows a section E-F through a horizontal profile-bar bearing means from figure 4, figure 10 shows a section E-F through a horizontal 25 profile-bar mount from figure 4, figure 11 shows a section E-F through a further horizontal profile-bar mount from figure 4, figure 12 shows a view of an upper lattice-profile crossover joint (24 in figure 2), 30 figure 13 shows a standard profile-bar connection, upper horizontal/vertical profile bar, in accordance with section G-H in figure 12, figure 14 shows a profile-bar connection according to the invention, upper horizontal/vertical 35 profile bar, in accordance with section G-H from figure 12, figure 15 shows a further profile-bar connection according to the invention, upper WO 2013/124051 PCT/EP2013/000477 10 horizontal/vertical profile bar, in accordance with section G-H from figure 12, figure 16 shows a further profile-bar connection according to the invention, upper 5 horizontal/vertical profile bar, in accordance with section G-H from figure 12, figure 17 shows a view of lattice-profile crossover joint according to the invention at the bottom (26 in figure 2), 10 figure 18 shows a standard profile-bar connection, lower horizontal/vertical profile bar, in accordance with section I-J from figure 17, figure 19 shows a profile-bar connection according to the invention, lower horizontal/vertical 15 profile bar in accordance with section I-J from figure 17, figure 20 shows a further profile-bar connection according to the invention, lower horizontal/vertical profile bar, in 20 accordance with section I-J in figure 17, and figure 21 shows a further profile-bar connection according to the invention, lower horizontal/vertical profile bar, in accordance with section I-J from figure 17. 25 Figure 1 illustrates a front view of a pallet container 10 according to the invention having a thin-walled rigid inner container 12 made of thermoplastic material, having a lattice-profile supporting casing 14 30 and having a base pallet 16 (pallet width 1000 mm). Figure 2 shows a side view of the pallet container 10 (pallet length 1200 mm). Figure 3 shows a double-stacked pallet container 10 35 according to the invention. This type of stacking is conventional during transportation for example by truck or in sea-going freight containers in accordance with ISO 668. In the case of double stacking, the lattice- WO 2013/124051 PCT/EP2013/000477 11 profile supporting casing 14 of the pallet container 10 stacked underneath is subjected to loading during transportation not just by the surge forces caused by its contents (radial loading), but also by the weight 5 of the pallet container 10 stacked on top (axial loading). Figure 4 shows a lattice-profile crossover point 18 of the lattice-profile supporting casing 14 according to 10 the invention formed by two U-shaped bar profiles 28 according to Figure 5. Sections C-D from figures 4, 12 and 17 show the horizontal 22 and vertical 20 profile bars with their mechanically joined connection. The sections C-D in figures 4, 12 and 17 are the same; the 15 mechanical joining connections can be made in accordance with figures 6, 7 and 8. Figure 6 shows a mechanical joining connection between the U-shaped vertical 20 and horizontal 22 profile bars 20 produced by means of clinching. The mechanical clinch connection is achieved by material being pushed in and displaced from the clinch cavity region 30 of the horizontal profile bar 22 and by subsequent insertion and pressing operations in the clinch-joining region 32 25 of the vertical profile bar 20. It is advantageous with this mechanical joining connection that there is only a low level of energy consumption and the joining zone is not influenced thermally in any way. 30 Figure 7 shows a further mechanical joining connection according to the invention between the U-shaped vertical 20 and horizontal 22 profile bars. The mechanical joining connection is made by the semi tubular rivet 34, which forms the semi-tubular-rivet 35 joining region 36 by punch riveting and thus permanently connects the vertical 20 and horizontal 22 profile bars.
    WO 2013/124051 PCT/EP2013/000477 12 A further mechanical joining connection according to the invention is the punch riveting method using a solid rivet 38, that has been illustrated in figure 8. The mechanical joining connection between the profile 5 bars 20 and 22 is produced by the solid punch rivet 38 and by the displacement of material into the joining region 40 of the solid punch rivet 38. Punch riveting using a solid rivet 38 takes place, as with punch riveting using the semi-tubular rivet 34, without 10 preliminary drilling and is therefore straightforward to automate. Figures 9, 10 and 11 show the horizontal profile bar 22 bearing on the vertical profile bar 20 at a lattice 15 profile crossover point 18 of the lattice-profile supporting casing 14 according to the invention, wherein the horizontal profile bar 22 is additionally fixed in a form-fitting manner in the vertical profile bar 20 via the accommodating groove 42 in figure 10 or 20 via the punched-out centering means 43 in figure 11. The view of a lattice-profile crossover joint according to the invention at the top 24 of the lattice-profile supporting casing 14 is illustrated in figure 12, 25 wherein the mechanical clinch or punch riveting joining connection between the upper horizontal profile bar 22 and the vertical profile bar 20 can be made as illustrated in figures 6, 7 and 8 in section C-D. 30 Figures 13, 14, 15 and 16 show the upper horizontal profile bar 22 butting against/bearing on the vertical profile bar 20, wherein the horizontal profile bar 22 is supported via the shoulder 44 in figure 15 or via the punched-out lower centering means 43 in figure 14. 35 Figure 16 shows a modified U-shaped upper horizontal profile bar 22 with a bearing limb 45, which performs the task of providing support on the vertical profile bar 20. Figure 13 illustrates the horizontal profile WO 2013/124051 PCT/EP2013/000477 13 bar 22 bearing on the vertical profile bar 20 without any vertical support. The view of a lattice-profile crossover joint according 5 to the invention at the bottom 26 is illustrated in figure 17, wherein the mechanical clinch or punch riveting joining connection between the horizontal profile bar 22 and the vertical profile bar 20 can take place as illustrated in figures 6, 7, and 8 in section 10 C-D. Figures 18, 19, 20 and 21 show the vertical profile bar 20 butting against/bearing on the lower horizontal profile bar 22, wherein the vertical profile bar 20 15 additionally bears, in figure 20, on a T-shaped lower horizontal profile bar 22 with a bearing limb 47 or, in figure 19, on a punched-out shoulder 46. Figure 21 shows an L-shaped lower horizontal profile bar 22 with two bearing regions 48, which perform the function of 20 supporting the vertical profile bar 20. Figure 18 shows the horizontal profile bar 22 butting against the vertical profile bar 20 without any additional vertical support for the vertical profile bar 20. 25 List of designations 10 Pallet container 12 Inner container 14 Lattice-profile supporting casing 30 16 Base pallet 18 Lattice-profile crossover point 20 Vertical profile bar 22 Horizontal profile bar 24 Lattice-profile crossover joint at the top 35 26 Lattice-profile crossover joint at the bottom 28 U-shaped bar profile 30 Clinch cavity 32 Clinch joining region WO 2013/124051 PCT/EP2013/000477 14 34 Semi-tubular rivet 36 Semi-tubular-rivet joining region 38 Solid punch rivet 40 Solid-punch-rivet joining region 5 42 Accommodating groove for horizontal profile bar 43 Punched-out centering means 44 Bearing region for horizontal profile bar 45 Bearing limb 46 Punched-out shoulder of vertical profile bar 10 47 Bearing limb 48 Bearing region for vertical profile bar
    权利要求:
    Claims (12)
    [1] 1. A pallet container (10) having a thin-walled inner container (12) made of thermoplastic material for the 5 storage and transportation of liquid or free-flowing contents, having a lattice-profile supporting casing (14), which, as supporting casing, closely encloses the inner container (12), and having a base pallet (16), on which the inner container (12) rests 10 and to which the lattice-profile supporting casing (14) is fixed, wherein the lattice-profile supporting casing (14) comprises crossing-over vertical (20) and horizontal (22) profile bars, wherein the vertical (20) and the horizontal (22) profile bars are connected at 15 their crossover points by mechanical joining operations such as clinching or punch riveting, characterized in that the profile bars (20, 22), at their points of connection (18, 24, 26), additionally have a mechanical 20 form fit (42, 43) or a form-fit-forming bearing region (42, 43) and are fixed in a rotationally secure manner as a result.
    [2] 2. The pallet container (10) as claimed in claim 1, 25 characterized in that the profile bars (22, 20) of the lattice-profile supporting casing (14) are provided with the additional mechanical form fit at their crossover points (18) by virtue of the vertical profile bars (20) being placed 30 in accommodating grooves (42) of the horizontal profile bars (22).
    [3] 3. The pallet container (10) as claimed in claim 1, characterized in that 35 the profile bars (22, 20) of the lattice-profile supporting casing (14) are provided with the additional mechanical form fit at their crossover points (18) by virtue of the vertical profile bars (20) being placed WO 2013/124051 PCT/EP2013/000477 16 in punched-out centering means (43) of the horizontal profile bars (22).
    [4] 4. The pallet container (10) as claimed in claim 1, 2 5 or 3, characterized in that the upper horizontal profile bar (22) of the lattice profile supporting casing (14) bears on the vertical profile bars (20) at the lattice-profile crossover 10 joint at the top (24) via the shoulders (44) or the punched-out lower centering means (43) of the vertical profile bars (20).
    [5] 5. The pallet container (10) as claimed in one of 15 preceding claims 1 to 4, characterized in that the upper horizontal profile bar (22) of the lattice profile supporting casing (14) bears on the vertical profile bars (20) at the lattice-profile crossover 20 joint at the top (24) via a shoulder (45) of the horizontal profile bar (20).
    [6] 6. The pallet container (10) as claimed in one of preceding claims 1 to 5, 25 characterized in that the vertical profile bars (20) of the lattice-profile supporting casing (14) bear on the bearing limb (47) of the lower horizontal profile bar (20) at the lattice profile crossover joint at the bottom (26). 30
    [7] 7. The pallet container (10) as claimed in one of preceding claims 1 to 6, characterized in that the vertical profile bars (20) of the lattice-profile 35 supporting casing (14) bear on the lower horizontal profile bar (22) at the lattice-profile crossover joint at the bottom (26) by way of their punched-out shoulders (46). WO 2013/124051 PCT/EP2013/000477 17
    [8] 8. The pallet container (10) as claimed in one of preceding claims 1 to 7, characterized in that 5 the profile bars (20, 22) of the lattice-profile supporting casing (14) consist of different materials and/or comprise different cross-sectional profiles.
    [9] 9. The pallet container (10) as claimed in one of 10 preceding claims 1 to 8, characterized in that the mechanical joining connections are produced without any separate preliminary perforations. 15
    [10] 10. The pallet container (10) as claimed in one of the preceding claims, characterized in that the vertical and/or horizontal profile bars (20, 22) of the lattice-profile supporting casing (14) have a 20 largely continuous profile.
    [11] 11. The pallet container (10) as claimed in one of the preceding claims, characterized in that 25 the lattice-profile supporting casing (14) is of rigid configuration. 11. The pallet container (10) as claimed in one of the preceding claims, 30 characterized in that the lattice-profile supporting casing (14) is of collapsible or foldable configuration.
    [12] 12. The pallet container (10) as claimed in one of the 35 preceding claims, characterized in that WO 2013/124051 PCT/EP2013/000477 18 the vertical (20) and horizontal (22) profile bars are connected by mechanical joining only at some lattice profile crossover points (18).
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    WO2013124051A1|2013-08-29|
    CN104245534A|2014-12-24|
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    HUE034693T2|2018-02-28|
    DE202012001726U1|2012-06-14|
    SG11201404982YA|2014-10-30|
    JP2015511913A|2015-04-23|
    RU2014138046A|2016-04-10|
    KR20140132369A|2014-11-17|
    HRP20170915T1|2017-09-22|
    DK2817241T3|2017-07-10|
    MY166405A|2018-06-25|
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    法律状态:
    2017-07-27| FGA| Letters patent sealed or granted (standard patent)|
    优先权:
    申请号 | 申请日 | 专利标题
    DE202012001726U|DE202012001726U1|2012-02-20|2012-02-20|pallet container|
    DE202012001726.8||2012-02-20||
    PCT/EP2013/000477|WO2013124051A1|2012-02-20|2013-02-19|Pallet container|
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