• 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:
    Pallet with support elements configured as one-piece skids, and related manufacturing method A pallet (10) is described which includes a base layer (20), a load layer (30) and support elements (40) spaced between themselves, positioned between the base layer (20) and the load layer (30), forming a space between them to receive a lifting element. The load layer (30) includes a pair of spaced connection plates (32) and a pair of outermost platform plates (34) spaced apart, orthogonal to the connection plate pair (32). Each support element (40) extends longitudinally between the pair of outermost platform plates (34) spaced apart and is configured as a one-piece skid, including an open recess channel (60) to receive a respective connection plate ( 32) of the load layer (30).
    公开号:BR112014001012B1
    申请号:R112014001012-9
    申请日:2012-07-12
    公开日:2020-06-30
    发明作者:Sanjiv Takyar
    申请人:Chep Technology Pty Limited；
    IPC主号:
    专利说明:

    [0001] [001] The present invention is related to the field of pallets, and particularly refers to a pallet having a better capacity to resist the impact of material handling equipment, while still supporting a nominal load capacity, and the related methods for manufacturing it. BACKGROUND OF THE INVENTION
    [0002] [002] Conventional wooden pallets include a base layer and a load layer separated by support blocks. The load layer has outermost plates or platform boards mounted on connecting plates or boards that are arranged along the entire length or width of the pallet. The outermost platform boards are coupled by the connecting boards to the support blocks for the construction of the primary structure of the pallet. The outermost deck boards are also known as main boards, and the connecting boards are also known as stringer boards. The base layer has outermost platform boards attached to the support blocks.
    [0003] [003] To move wooden pallets containing cargo, the lifting members of the material handling equipment, such as the forks of a forklift, are inserted in the spaces between the base and cargo layers. If the forklift is not stopped in time, the forklift crashes against one of the outermost platform boards on the pallet. Impacts like this weaken the pallet and greatly shorten its life span, thus causing the pallet to have to be repaired more frequently and / or to be taken out of service before its expected life cycle is reached.
    [0004] [004] An approach to improve the impact resistance capacity of material handling equipment is described in patent FR 26600283, which provides separate support elements made of plastic, having notches formed to receive connection plates from the load layer. The connection plates are positioned in the corners.
    [0005] [005] Another approach is described in GB 2080763, which provides a support element configured as an elongated block of low cell density material, such as reinforcement, and a corresponding bottom surface also includes a sheet of reinforcement material. The sheets of reinforcement material can be of wood, for example. An adhesive or other fixing material can be used to fix the sheets of reinforcement material to the support element.
    [0006] [006] Yet another approach is described in patent GB 2265137, which provides a plastic pallet comprising three support elements spaced apart, which are joined by three base board members. The base board members are orthogonal to the support elements. A plurality of beams is supported by the support elements. Each support element is an elongated member having on its upper surface a series of vertical friezes, and on its lower surface three recesses integrally connected to each other through sections. The beams are positioned between the friezes and serve as a bridge for the three support elements, while the base plank members located in the recesses serve as a bridge for the support elements. Each support element comprises a one-piece member made of a plastic material. Each beam is a hollow extruded member. Base board members are also hollow extruded members.
    [0007] [007] In view of the pallets described above, there is still a need to extend the life of a pallet. improving its resistance to the impact of material handling equipment. SUMMARY OF THE INVENTION
    [0008] [008] Considering the aforementioned antecedents, it is therefore an objective of the present invention to provide a pallet that has better resistance to impacts from material handling equipment, while maintaining its nominal load capacity.
    [0009] [009] This and other objectives, advantages and characteristics according to the present invention are provided by a pallet comprising a base layer and a load layer, with the load layer comprising a pair of spaced connection plates and a pair of outermost spaced platform plates, orthogonal to the said pair of connection plates. The pallet may further comprise a plurality of spaced support elements, positioned between the base layer and the load layer, forming spaces between them to receive a lifting member, with each support element extending as a single piece skid, including an open recessed channel for receiving a corresponding load layer connection plate.
    [0010] [0010] Each support element may comprise a connection plate receiving area, and a plurality of spaced support blocks, integrally formed with the connection plate receiving area and in contact with the base layer. The connection plate reception area can include the open recessed channel, which serves to receive the respective connection plate. The connection plate receiving area may also comprise spaced side walls adjacent to the side walls of the respective connection plate received, and open ends exposing the ends of the respective connection plate.
    [0011] [0011] With the support element configured as one-piece skids and extending the total depth of the pallet, the impact resistance of material handling equipment is improved. This is particularly the case when the support element is molded from plastic. In order to provide the necessary rigidity so that a support element can support the rated load capacity, the load connection plate is positioned inside the area in an open recess. Each connection plate and each outermost platform plate can be made of wood.
    [0012] [0012] The open recessed channel in each support element can have a depth equal to the thickness of the connection plate placed on it, so that an external exposed surface of the connection plate is coplanar with an external exposed surface of the support element .
    [0013] [0013] Each support element can also comprise a pair of stops positioned immediately adjacent to a respective outermost platform plate. This further increases the pallet's resistance to impacts from material handling equipment, as well as improves structural rigidity. When an impact force is applied to an outermost platform plate, the stops advantageously absorb the impact force, instead of the fasteners used to secure the outermost platform plates to the support elements. The stops can be integrally molded with each support element.
    [0014] [0014] The load layer may further comprise a plurality of intermediate platform plates between the outermost pair of platform plates. The load layer can also include at least one intermediate connection plate. The pallet can further comprise the load, extending longitudinally between the pair of outermost spaced platform plates and configured as a one-piece runner, including an open recessed channel to receive at least one intermediate connection plate.
    [0015] [0015] The base layer may comprise a pair of lower outermost spaced platform plates, extending along the plurality of spaced support elements, in the same direction as the outermost platform plates of the load layer, and at least one lower intermediate platform plate between the outermost pair of platform plates.
    [0016] • A fig. 1 é uma vista em perspectiva de um palete de acordo com o presente invento; • A fig. 2 é uma vista em perspectiva do palete mostrado na fig. 1, sem as placas de plataforma mais externas e as placas de plataforma intermediárias da camada de carga; • A fig. 3 é uma vista em perspectiva de um elemento de suporte com um canal em recesso aberto, e uma respectiva placa de conexão da camada de carga a ser posicionada no canal em recesso aberto, de acordo com a presente invenção; • A fig. 4 é uma vista lateral de uma extremidade do elemento de suporte mostrado na fig. 3, com a placa de conexão posicionada no canal em recesso aberto; • A fig. 5 é uma vista em perspectiva de um elemento de suporte com uma placa de conexão, com batentes que se estendem através da placa de conexão e com os rebites utilizados para fixar as placas de plataforma mais externas e as placas de plataforma intermediárias ao elemento de suporte, de acordo com a presente invenção; • A fig. 6 é uma vista em perspectiva de uma outra forma de incorporação do elemento de suporte mostrado na fig. 5, em que os batentes não se estendem ao longo da placa de conexão; • A fig. 7 é um fluxograma que ilustra um método para fabricar um palete de acordo com o presente invento. [0016] Another aspect concerns a method for making a pallet as described above. The method may include providing the plurality of spaced support elements, with each support element extending longitudinally between the pair of outermost spaced platform plates and configured as a one-piece skid, including an open recessed channel. A respective load layer connection plate can be positioned on each channel in an open recess of the plurality of support elements spaced apart. The method may further comprise fixing the pair of outermost platform plates spaced from the load layer on an upper side of the plurality of spaced support elements, and fixing the pair of outermost platform plates spaced from the base layer on one bottom side of the plurality of spaced support elements. BRIEF DESCRIPTION OF THE DRAWINGS • fig. 1 is a perspective view of a pallet according to the present invention; • fig. 2 is a perspective view of the pallet shown in fig. 1, without the outermost platform plates and the intermediate platform plates of the load layer; • fig. 3 is a perspective view of a support element with an open recessed channel, and a corresponding load layer connection plate to be positioned in the open recessed channel, according to the present invention; • fig. 4 is a side view of one end of the support element shown in fig. 3, with the connection plate positioned on the channel in an open recess; • fig. 5 is a perspective view of a support element with a connection plate, with stops extending through the connection plate and with the rivets used to secure the outermost platform plates and the intermediate platform plates to the support element according to the present invention; • fig. 6 is a perspective view of another embodiment of the support element shown in fig. 5, in which the stops do not extend along the connection plate; • fig. 7 is a flow chart illustrating a method for making a pallet according to the present invention.
    [0017] [0017] The present invention will now be described more fully with reference to the accompanying drawings, in which the preferred embodiments of the invention are shown. This invention can, however, be realized in many different ways and should not be construed as limited to the forms of incorporation described herein. Instead, these forms of incorporation are provided for this description to be thorough and complete, and to fully reveal the scope of the invention to those skilled in the art. Like numbers refer to like elements throughout this description, and a notation is used to indicate alternative forms of incorporation.
    [0018] [0018] Referring initially to figs. 1 and 2, a pallet 10 comprises a base layer 20, a load layer 30 and support elements 40 spaced from each other, positioned between the base and load layers to define a space 50 between them to receive the members of lifting material handling equipment, such as forklift lifting forks. The load layer 30 comprises a pair of connection plates 32 spaced apart from each other and a pair of outermost platform plates 34 spaced apart, orthogonal to the connection plates. The outermost platform plates 34 are also known as main plates, and the connection plates 32 are also known as stringer plates.
    [0019] [0019] The illustrated pallet 10 has a substantially rectangular shape. Pallet 10 can have dimensions, for example, 800 mm deep, 1200 mm wide, and a height of 144 mm. As readily appreciated by those skilled in the art, pallet 10 is not limited to these dimensions, and can be formed with other dimensions. In addition, pallet 10 can be shaped into a substantially square shape.
    [0020] [0020] In particular, each support element 40 extends longitudinally between the pair of outermost platform plates 34 spaced apart, and is configured as a one-piece runner. Each support element 40 includes an open recessed channel for receiving a respective connection layer 32 of the load layer.
    [0021] [0021] With the support element 40 configured as a one-piece skid and extending along the total depth of the pallet 10, the impact resistance capacity of material handling equipment is improved. This occurs particularly when the support element 40 is molded from plastic. In order to provide the necessary rigidity for a support element 40 to withstand the rated load capacity, the connection plate 32 of the load layer 30 is positioned within the open recessed area 60.
    [0022] [0022] The illustrated pallet 10 also includes at least one intermediate support element 42, and the loading layer 30 includes at least one intermediate connection plate 36 and a plurality of intermediate platform plates 38 between the outermost platform plates 34 The connection plates 32 are similar in design and function to the intermediate connection plate 36.
    [0023] [0023] A perspective view of the pallet 10, without the outermost platform plates 34 and the intermediate platform plates 38 of the load layer 30, is provided in fig. 2. The base layer 20 includes a pair of lower outermost platform plates 24 spaced apart, extending between the spaced support elements 40, and the intermediate support element 42 positioned between them. The lower outermost platform plates 24 extend in the same direction as the outermost platform plates 34 in the load layer. The base layer 20 also includes an intermediate lower platform plate 28 between the pair of lower outermost platform plates 24.
    [0024] [0024] Usually, pallets include a separate support block positioned between the base and cargo layers to define a space 50 between them, to receive the lifting members of the material handling equipment. In sharp contrast, each support element 40, on the illustrated pallet 10, is configured as a single piece skid, advantageously combining multiple support blocks into a single component. In this example, three support blocks are combined in one piece skid.
    [0025] [0025] Each support element 40 can be molded from thermoplastic polymeric materials, or others, including high density polyethylene (HDPE - High Density PolyEthylene) and polypropylene (PP), among the polymeric materials. As can be appreciated by those skilled in the art, polymeric materials can be filled or unfilled, and / or can include particulate or fibrous, natural or synthetic materials, among other characteristics. For example, unfilled HDPE can provide better impact resistance, PP with reinforcers (for example, long or short glass fibers, impact modifiers or additives for better performance) can provide improved structural properties, and unfilled PP with random copolymers can offer better reinforcement qualities.
    [0026] [0026] So that each support element 40 provides the necessary rigidity to maintain a desired load rate, such as 1000 kg. for example, a connection plate 32 of the load layer 30 is placed inside an open recess channel 60, as best illustrated in figures 3 and 4. Although the intermediate support element 42 is not discussed in detail, the discussion of support elements 40 is applicable to the intermediate support element, as readily appreciated by those skilled in the art.
    [0027] [0027] Each support element 40 comprises a connection plate receiving area 62, and a plurality of spaced and separated support blocks 64, integrally formed with the connection plate receiving area. The connection plate receiving area 62 includes the open recessed channel 60 that receives the respective connection plate 32. The connection plate receiving area 62 also includes side walls 66 spaced adjacent to side walls of the respective connection plate 32 received, and open ends exposing the ends of the respective connection plate.
    [0028] [0028] The recess in open channel 60 in each support element 40 has a depth equal to the thickness of the connection plate 32 placed inside it, so that an external exposed surface of the connection plate is coplanar with the external exposed surface of the side walls 66 of the support element, as best illustrated in fig. 4.
    [0029] [0029] The manufacture and assembly of pallet 10 is advantageously simplified with the use of support elements 40 configured as one-piece skids, which also have a channel readily appreciated by those skilled in the art, the discussion of support elements 40 is applicable to the intermediate support element 42. The intermediate support element 42 therefore has a design and function similar to those of the other support elements 40.
    [0030] [0030] Since the support elements 40 and the intermediate support element 42 are formed of plastic, they have a high impact resistance of the forklift forks, for example. In addition, support elements 40 and intermediate support element 42 may include rounded corners / edges 68 along their perimeter, which also helps to reduce and / or deflect damage during impact with forklift forks, as well as providing a better aesthetic appearance.
    [0031] [0031] To further improve impact resistance and structural rigidity, each support element 40 and intermediate support element 42 can optionally include a pair of stops 70, which extend over the entire width of the connection plate 32 or along the entire width of the intermediate connection plate 36, as best shown in figs. 2 and 5. Each stop 70 extends along the width of the channel in an open recess, and is positioned immediately adjacent to the respective outermost platform plate 34. When an impact force is applied to an outermost platform plate 34 the stops 70 absorb the impact force, instead of the fasteners used to secure the outermost platform plates 34 to the support elements 40.
    [0032] [0032] In an alternative embodiment, the stops 70 'do not extend over the entire width of the connection plate 32', or over the entire width of the intermediate connection plate, as best shown in fig. 6. Instead, the stops 70 'are limited to the side walls of the support element 40' and the intermediate support element.
    [0033] [0033] Each stop 70, 70 'can be integrally formed with the support element 40, 40' and with the intermediate support element 42. In this case, each stop 70, 70 'is molded from the same thermoplastic polymeric materials or others used for the support elements 40, 40 'and for the intermediate support element 42.
    [0034] [0034] Alternatively, each stop 70, 70 'can be formed separately from the support element 40, 40' and from the intermediate support element 42. In this case, the stops 70, 70 'can be molded from different thermoplastic materials or thermoplastic or polymeric material, while the support elements 40, 40 'and the intermediate support element 42 can be molded from a second type of thermoplastic or polymeric material.
    [0035] [0035] Fixing elements 80 are used to couple the outermost platform plates 34 to the supporting elements 40. The fixing elements 80 can be rivets, for example. The fasteners 80 can extend over the entire pallet, from the top to the base, that is, from the load layer 30 to the base layer 20. Alternatively, the fasteners 80 can extend runs along the entire pallet, from the bottom to the top, that is, from the base layer 20 to the load layer 30. In addition, some of the fastening elements 80 can extend from the top to the bottom, while some of the fastening elements can extend from the bottom to the top on the same pallet 10.
    [0036] [0036] The connection plates 32 and the outermost platform plates 34 are pre-drilled with "rivet" holes. Likewise, the support elements 40 are pre-drilled with "rivet" holes to receive the rivets 80. The rivets 80 allow the outermost platform plates 34 and the intermediate platform plates 38 to be fixed to an upper side of the support elements 40 and the intermediate support elements 42. The intermediate platform plates 38 that are not directly on a support block 64 are coupled to the support element 40 or to the intermediate support element 42 by means of different fasteners rivets, such as nails or staples, for example.
    [0037] [0037] The rivets 80 are used to fix the lower outermost platform plates 24 and the lower intermediate platform plate 28 of the base layer 20 on a lower side of the support elements 40 and the intermediate support element 42. They can be other types of fasteners are used, as readily appreciated by those skilled in the art, such as nails and staples, for example.
    [0038] [0038] Another aspect of the invention concerns a method for making a pallet 10 as described above. Referring now to flow chart 100 illustrated in fig. 7, from the beginning (Block 102), the method comprises providing a plurality of support elements 40 spaced in Block 104. with each support element 40 extending longitudinally between the pair of outermost platform plates 34 spaced, configured as a one piece skid and load 30 it is positioned, in Block 106, in each channel in open recess 60 of the support elements 40 spaced apart.
    [0039] [0039] The method also comprises fixing the pair of outermost platform plates 34 spaced, of the load layer 30, to an upper side of the support elements 40 spaced apart, in Block 108, and fixing the pair of plates bottom outermost platforms 24 spaced, from the base layer 20, to a lower side of the support elements 40 spaced, in Block 110. The method ends in Block 112.
    [0040] [0040] Many modifications and other forms of incorporation of the invention can be suggested by a person skilled in the art, having the benefit of the teachings presented here in the above descriptions and in the associated drawings. Therefore, it is understood that the invention should not be limited to the specific forms of incorporation disclosed, and that the modifications and forms of incorporation are intended to be included in the scope of the invention, as readily appreciated by those skilled in the art.
    权利要求:
    Claims (11)
    [0001]
    Pallet with support elements configured as one-piece runners, comprising a pallet (10) having a base layer (20) and a load layer (30), the load layer comprising a pair of spaced connection plates (32) between themselves and a pair of outermost platform plates (34) spaced apart, orthogonal to the said pair of connection plates, the pallet being characterized by comprising: a plurality of spaced support elements (40), positioned between said base layer (20) and said load layer (30), forming a space (50) between them to receive a lifting member, with each element support bracket (40) extending longitudinally between said pair of outermost platform plates (34) spaced apart, configured as a one-piece runner and including an open recess channel (60) to receive a respective connection (32) of the load layer (30), each support element (40) comprising: a connection plate receiving area (62); and a plurality of spaced support blocks (64), integrally formed with said connection plate receiving area and in contact with said base layer (20); wherein said connection plate receiving area (62) includes the open recessed channel (60) which serves to receive the respective connection plate (32), and comprises side walls (66) spaced adjacent to side walls of the respective plate of connection received in it, and open ends exposing ends of the respective connection plate; the open recessed channel (60) in each support element (40) has a depth equal to the thickness of the connection plate (32) placed inside it, so that an exposed external surface of the connection plate is coplanar with the surface exposed exterior of said support element.
    [0002]
    Pallet with support elements configured as one-piece skids according to claim 1, characterized in that each support element (40) further comprises a pair of stops (70 ') with each stop positioned immediately adjacent to a respective platform plate outermost (34) and extending along the width of the channel in open recess (60).
    [0003]
    Pallet with support elements configured as one-piece skids, according to claim 1, characterized in that each support element (40) further comprises a pair of stops (70), with each stop positioned immediately adjacent to a respective platform plate outermost (34), without extending along the width of the channel in open recess (60).
    [0004]
    Pallet with support elements configured as one-piece skids, according to claim 1, characterized in that each support element (40) is made of plastic, and each connection plate (32) and each platform plate (34) is made of wood.
    [0005]
    Pallet with support elements configured as one-piece skids according to claim 1, characterized in that said loading layer (30) further comprises a plurality of intermediate platform plates (38) between said pair of platform plates plus external (34).
    [0006]
    Pallet with support elements configured as one-piece skids, according to claim 1, characterized in that said load layer (30) further comprises at least one intermediate connection plate (36), and also comprises at least one element of intermediate support (42) positioned between said base layer (20) and said load layer (30), extending longitudinally between said pair of outermost platform plates (34) spaced apart and configured as a part skid single, including an open recess channel (60) to receive at least one said intermediate connection plate.
    [0007]
    Pallet with support elements configured as one-piece skids according to claim 1, characterized in that said base layer (20) comprises a pair of lower outermost platform plates (24) spaced out, extending along the said plurality of support elements (40) spaced in the same direction as the outermost platform plates (34) in said load layer (30), and at least one lower intermediate platform plate (28) between said pair of lower outermost platform plates.
    [0008]
    Method of manufacturing a pallet with support elements configured as one-piece skids, comprising a base layer (20), a loading layer (30) comprising a pair of connecting plates (32) spaced apart, and a pair of outermost spaced platform plates (34) orthogonal to the pair of connection plates, and a plurality of support elements (40) spaced apart between the base and load layers, forming a space (50) between the to receive a lifting element, the method being characterized by comprising: provide the plurality of spaced support elements (40), with each support element extending longitudinally between the pair of outermost platform plates (34) spaced apart, configured as a single piece skid and including an open recess channel ( 60), and with each support element (40) comprising a connection plate receiving area (62); and a plurality of spaced support blocks (64), integrally formed with said connection plate reception area and in contact with said base layer (20); positioning a respective connection plate (32) of the load layer (30) in each channel in an open recess (60) of the plurality of spaced support elements (40); wherein said connection plate receiving area (62) includes the open recessed channel (60) which serves to receive the respective connection plate (32), and each support element (40) and further comprises side walls (66 ) spaced adjacent the side walls of the respective connection plate received therein, and open ends exposing the ends of the respective connection plate, and the channel in open recess (60) in each support element (40) has a depth equal to the thickness of the connection plate (32) placed inside it, so that an external exposed surface of the connection plate is coplanar with the surface external exposed of said support element; and secure the pair of outermost platform plates (34) spaced from the load layer (30) to an upper side of the plurality of spaced support elements (40).
    [0009]
    Method of manufacturing a pallet with support elements configured as single-piece skids according to claim 8, characterized in that each support element (40) further comprises a pair of stops (70), with each stop positioned immediately adjacent to a respective outermost platform plate (34) and extending along the width of the channel in open recess (60).
    [0010]
    Method of manufacturing a pallet with support elements configured as one-piece skids, according to claim 8, characterized in that each support element (40) further comprises a pair of stops (70 '), with each stop positioned immediately adjacent to a respective outermost platform plate (34), without extending along the width of the channel in an open recess (60).
    [0011]
    Method of manufacturing a pallet with support elements configured as one-piece skids, according to claim 8, characterized in that each support element (40) is made of plastic, and each connection plate (32) and each connection plate platform (34) be made of wood.
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    US10322847B2|2019-06-18|
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    AU2012285947B2|2016-03-24|
    ZA201400239B|2015-12-23|
    ES2629654T3|2017-08-11|
    WO2013010920A1|2013-01-24|
    LT2546160T|2017-10-10|
    US9434506B2|2016-09-06|
    EP3208207B1|2020-02-26|
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    法律状态:
    2018-12-11| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2019-09-03| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|
    2020-04-28| B09A| Decision: intention to grant|
    2020-06-30| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 12/07/2012, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    EP11174175.7A|EP2546160B1|2011-07-15|2011-07-15|Pallet with support elements configured as one-piece skids and related method|
    EP11174175.7|2011-07-15|
    PCT/EP2012/063731|WO2013010920A1|2011-07-15|2012-07-12|Pallet with support elements configured as one-piece skids and related method|
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