JPS61115837A - Pallet made of synthetic resin - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a synthetic resin pallet made of a number of molded pieces for so-called pallet handling. This pallet has a multi-part structure including an upper deck for supporting cargo, a number of supporting legs, and a lower deck or shoe,
A fork entrance for a forklift is formed between the supporting legs.

PRIOR ART In the case of such multi-part synthetic resin pallets, the upper deck and/or the lower deck, if any, also have a plurality of outer molded beams and inwardly facing surfaces of these molded beams. It consists of an insert joined to the side to which it is attached. In this case, both outer shaped beams have an upper chord and a lower chord connected to this upper chord via an intermediate web, with a cross-sectional section closed on the outside and open inward. Each such shaped beam is supplemented by joining with said insert to form a ``1n'' hollow cross-sectional section closed along the entire circumference. The 1" hollow cross-sectional section passes into the support leg, which is also formed as a hollow cross-sectional section, which in the case of shoe pallets is also closed along the entire circumference within the insert within the area of the central shoe. one “second”
A section with a hollow cross-sectional shape of '' is formed.

In the case of this type of known synthetic resin pallet (see German Patent Application No. 240337Φ),
In particular, the "first" hollow cross-sectional section serves to provide pallet rigidity to withstand the German and Japanese synthetic resin pallet tests. In addition, a continuous chamfered surface is formed not only along the periphery of the pallet but also around several supporting legs.

According to this synthetic resin pallet, the "first" hollow cross-sectional section is configured as a hollow cross-sectional frame,
In this case, the frame consists of several components, which are fastened laterally to an insert provided in a so-called Solefab manner. In this way, within the frame area there are in each case two "first" parallel to each longitudinal edge of the pallet.
The hollow cross-sectional section of is elongated.

Furthermore, in the case of this known synthetic resin pallet, the support legs also have a hollow cross-section, and in the case of shoe pallets, the central shoe has a hollow cross-section.

Problems to be Solved by the Invention In the case of this known multi-part synthetic resin pallet, the inserts themselves, which occupy most of the upper deck and lower deck, which are the loading surfaces for cargo, are not given a hollow cross-sectional shape. , as a result the lateral stiffness is not sufficient. The object of the invention is to increase the lateral rigidity of known synthetic resin pallets of this type.

Means to solve problems This object was achieved by the present invention as follows.

That is, at least one "second" hollow cross-section section, which is closed along the entire circumference, is provided in the insert at least in the upper deck. In this way, the lateral stiffness of the pallet is increased and thus the millet The overall rigidity is further increased.

Embodiment In such an embodiment, the six second" hollow cross-sectional sections within the insert are spaced parallel to or with at least a parallel directional component to both forming beams on the outside of the pallet. It may also be located crosswise to the outer forming beam, ie at right angles, or diagonally between the corners of the pallet.

The "second" hollow cross-sectional section can be produced in the insert itself in the following way: when prefabricating the insert, a lateral core, which is retracted laterally during die cutting, is inserted into the mold. It is used in If a single "second" hollow cross-sectional section is produced by means of two such mutually opposite lateral cores from both of its outer ends, the size of the transverse dimensions of the plastic pallet to be produced is Requires a horizontal core with dimensions of .

Closing the end face of the ``second'' hollow cross-sectional section is also possible, if necessary, with an additional working step, using a cover element.This type of construction requires relatively high production costs. is necessary, but the "second" hollow cross-sectional section in question can already be preformed in only one solefabricated component and thereby the gap between the various prefabricated components can be The advantage arises that no bonding area is required.

However, the "second" hollow cross-sectional section, as well as the "first" hollow cross-sectional section at the edge of the plastic pallet, complement each other in the joining area, so that the 0th 2' hollow cross-sectional section Advantageously, it is made from a number of, in particular two, prefabricated components forming the. This offers the advantage that the components of the insert can be made on relatively small machines. Furthermore, the mutually complementary parts of the "second" hollow cross-sectional section can also be constructed in such a way that this hollow cross-sectional section is already closed even at the end face during the initial molding. In this case, only at least one of these components
It is only necessary to provide its sides with a cross-sectional shape that is open towards the other component, but otherwise closed. The mold costs are also very low in this case, since very short retractable lateral cores can be used. The joining of a large number of such components of the insert is no longer a problem in the state of the art, even if it is an additional work step.

The insert between the two lateral profiled beams consists of two mutually parallel intermediate pieces, which are each connected to the outer profiled beam on one side, and which join together to form their connection area. A 2nd hollow cross-sectional section can be formed in each of the two outer shaped beams.A series of three or more intermediate pieces can be provided between the two outer shaped beams, each of which "Second" in the joining area
It may also be provided to form a hollow cross-sectional section.

An inner shaped beam is provided between two intermediate pieces each attached to an outer shaped beam, which inner shaped beam in combination with at least one of the adjacent intermediate pieces connected thereto forms a "second" hollow cross-section. It is also possible to form divisions. In this case, the intermediate piece attached to the other side of the inner shaped beam can, but need not, serve to form the "second" hollow cross-sectional section. Even when the inner profiled beams are used together to form a hollow cross-section section 1-2, for example an intermediate piece between the two outer profiled beams, an inner profiled beam, an intermediate piece, an inner profiled Two or more inner shaped beams are provided in the arrangement of beams, intermediate pieces, such that these serve in pairs or pairs of three to respectively form one 1-2'' hollow cross-sectional section. By doing so, multiple arrangement can be performed (claim 2).

In the case of the last-mentioned embodiment, the inner profiled beam forms on both sides of its intermediate web one laterally open cross-sectional section in each case by means of an upper chord and a lower chord; It is advantageous to provide that the cross-sectional sections are each closed off by an intermediate piece adjoining it to form a "second" hollow cross-sectional section, in this case next to the intermediate web of the inner shaped beam. , in combination with the intermediate pieces adjoining on both sides, result in a pair of "second" hollow cross-sectional sections juxtaposed to each other and completely separated from each other by intermediate webs.

- If it is important only to increase the bending strength of the insert, the supporting legs of the insert may be omitted or may optionally consist of the intermediate piece itself. However, a "second" hollow t+' in the insert to support the load resting on the insert of the pallet.
It is advantageous to provide at least one support leg extending from the Q-section section. These legs support pallet edges and/or
They can be arranged internally in the insert, for example directly in the center of the pallet or offset in pairs relative to this center.

In this case, it is possible to manufacture the support leg in a known manner sufficiently rigidly as a separate component and to later connect it with the component forming the hollow cross-sectional section 1 and 2"; however, the insert Advantageously, the support legs are made in one piece with the component forming the "second" hollow cross-sectional section, ie, when this component is molded.

If the supporting legs of the insert form a hollow cross-sectional section that is closed over the entire circumference and are arranged and configured to extend vertically through the "second" hollow cross-sectional section, it is possible to reduce the supporting capacity by a small amount. material consumption can be well balanced. In this case, the penetrating support leg can be constructed individually on the inner profiled beam, but also by means of two components adjacent to each other, such as two intermediate pieces, or in addition with two intermediate pieces and between them. It can also consist of three or more mutually adjacent components, such as a shaped beam arranged.

The penetrating arrangement of the support leg has the feature that both end faces of the support leg are open when not closed by special means. The open cross-sectional shape of the support legs, in conjunction with the internal vertical reinforcing webs at the top deck, can serve to make the surface of the top deck as slip-resistant as desired.

However, in many cases it is desirable that the end faces of the supporting legs are also closed. For this purpose, and also in order to form the open end face of the support leg, the support leg of the insert forms a hollow cross-sectional section that is closed over its entire circumference, with the mutually complementary circumferential regions being "second". It is suitable to have a monolithic construction with mutually complementary parts of the hollow cross-sectional sections. In this case, the contour of the inner support leg, in contrast to the case of the through arrangement of the previously described embodiments, can also be obtained by means of short retractable lateral tangs of the type that creates the component in question; In some cases, the end faces of the supporting legs can also be closed from the beginning during molding.

In order to form a lattice on the outer surface of the deck, which is known per se and which reduces the inherent sliding properties of synthetic resins, the deck part formed by the intermediate pieces can have vertical webs arranged in a honeycomb or cross lattice pattern. , these vertical webs can be reinforced as required in any suitable known manner and at the same time are surrounded by edge webs which in each case adjoin the 1st or 1st 2nd hollow cross-sectional section. Helpful for closing.

The "second" hollow cross-sectional section is made of synthetic resin according to the invention.
ξVlet gives additional stiffness in its longitudinal direction. In order to obtain a corresponding stiffness in the transverse direction orthogonal to this,
According to the invention, at least one "third" hollow cross-sectional section is provided which passes through the insert in a direction perpendicular to the "second" hollow cross-sectional section and is closed all around. You can leave it there. This 6th 3rd” hollow cross-sectional section is
If it extends perpendicularly or obliquely to the outer profiled beam, it is advantageous if it is closed off at the end by the outer profiled beam. A "third" hollow cross-sectional section is used in particular between the two outer molded beams for transverse supplementation and is in this case perpendicular to these outer molded beams or along the plastic pallet. It extends diagonally. However, the “third” hollow cross-sectional section is the 6th 2nd n
It can also extend at a distance between the outer profiled beams if the hollow cross-sectional sections are perpendicular to the outer profiled beams.

Such a "third" hollow cross-sectional section can also be molded into the insert from the beginning by using retractable lateral cores when molding the insert or its components. can.

In this case, the insert is made up of a number of components, for example a number of intermediate pieces, optionally also at least one inner profiled beam, and the hollow cross-sectional section of the sixth 3'' is different in pieces. Relatively short lateral cores are required if they can be molded separately into the component.

The use of the 6 2nd" hollow cross-sectional section and even the 6 3rd" hollow cross-sectional shape makes it possible to produce hollow cross-sectional frames separately closed on the inside, as in the case of well-known synthetic resin pallets. It is also possible to avoid constructing a shaped beam.

On the contrary, as claimed in claim 13, a 6-piece molded within the insert itself complements the outer molded beam along the outer edge of the plastic pallet extending perpendicularly to the outer molded beam. This can be done by means of a 3nth hollow cross-sectional section, the "third" hollow cross-sectional section being e.g. a "second" hollow cross-section extending centrally between the "first" hollow cross-sectional sections. It extends in a direction perpendicular to the division. However, in the synthetic resin goulette according to the present invention, it is also possible to construct the frame from a molded beam all the way around. However, the advantageous embodiment described above also provides for the frame pallet to be constructed with fewer joining areas than before, for example in the minimum case between one outer molded beam and the insert and between this insert and the other outer molded beam. It allows to be configured with two joining areas in between. In this case, no further joining areas of adjacent components are necessary to form the "third" hollow cross-sectional section. To form a "second" hollow cross-sectional section, even if between at least two constituent members of the insert a six second" hollow cross-sectional section is constructed by mutual complementation of these constituent members. Depending on whether one inner molded beam is used or just two intermediate pieces are fitted together, even more so than plastic pallets with peripheral molded beams.
One or two bonding areas can be reduced.

Ru.

However, the six third" hollow cross-sectional sections can not only be used to supplement the hollow cross-sectional frame, but also alternatively or in combination therewith the third" hollow cross-sectional section according to claim 14. It can also be used as an intermediate supplement for synthetic resin Nomlets according to classification. Such a hollow cross-sectional section can then extend, for example, between the centers of the two outer profiled beams, or it can consist of a number of "3n" hollows arranged equidistantly with respect to this center. When arranging the hollow cross-sectional sections in this way, the hollow cross-sectional sections can also be formed between adjacent components in the same manner as the second hollow cross-sectional sections. You can also.

The structure of the synthetic resin pallet according to the present invention is useful for single deck type synthetic resin pallets in which the upper deck is simply placed on supporting legs, and also because of the multi-decker ξlet which would otherwise be stuck, and especially for shoe pallets. It can also be used for

The latter pallet may furthermore optionally have its upper deck supplemented by auxiliary stiffening elements, in particular frame-like and always cross-shaped, using a "second" or, if necessary, "third" hollow cross-section section. You can keep it. Furthermore, according to the present invention, it is possible to construct a multi-deck gullet having a large notch for passing the wheels of a forklift, as described in claim 15, and in this case, the large notch in the lower deck can be constructed. The lack of material stiffness is compensated for by surrounding these cutouts with partial frames formed by "first", "second" or "third" hollow cross-sectional sections. It is suitable for the intermediate piece and/or the inner shaped beam to be constructed in a single piece over its entire height. The intermediate piece does not need to be configured as a single piece in the longitudinal direction of the formed beam.
It is also possible, especially when only small molds are available, to join together a number of intermediate pieces in the longitudinal direction of the outer molding beam. In this case, it is possible, but not necessarily necessary, to use a penetrating outer shaped beam and, if necessary, an inner shaped beam.

Plastic pallets according to the invention, made of polyethylene or polypropylene, for example, are generally made from solid extruded pieces. However, the invention is not limited to any particular manufacturing method. Thus, for example, injection molding or blow molding methods or even foamed plastics can also be used. Furthermore, the synthetic resin can also be provided with reinforcing inserts in a known manner. In that case, "first", "second" and/or
The feature of the invention that the "third" hollow cross-sectional section is closed over its entire circumference remains unchanged by the presence of some perforations which do not significantly impair the functionality of the plastic pallet according to the invention.

In order to connect the prefabricated components of the plastic pallet according to the invention, such as shaped beams (outer and, if necessary, inner), intermediate pieces and, if necessary, separately manufactured support legs, various Well known methods can be used. Spiegel welding is preferred, as is the case with the known plastic pallets, but other welding or gluing and/or mechanical bonding methods can also be used. Although the term ``outer'' shaped beams is used, further components may be connected to the outside of these outer shaped beams.

The invention will now be described in detail with reference to the accompanying drawings.

In each of the three embodiments of the synthetic resin pallet shown in FIGS. 1, 2 and 3, an upper deck 1 for supporting the cargo is provided, which is supported by support legs 3 of the same length. There is. In this case, in particular, the "first" supporting legs 5 should be placed at the four corners of the synthetic resin pallet, the "second" supporting legs 5 should be placed at the center between the corners at the edges of the pallets, and the "third" supporting legs should be placed at the center between the corners. The support leg 6 is located in the center of the pallet, as shown in particular in FIG. 8b,
It can be seen from FIG. 11a and FIG. 13b.

The supporting leg protrusions form an engagement opening 8 for a fork of a forklift between them. In this case, all the embodiments according to FIGS. 1 to 3 each have two engagement openings 8 in a square shape.
It is constructed as a so-called two-way noglet placed on all four sides of the let. However, the glelet can also be modified in such a way that it has a rectangular shape different from a square and/or is simply configured as a one-way millet. The number of engaging openings per side of the R-let may be two or more or two or less.

In the embodiments of FIGS. 1 and 2, a multi-deck pallet of the type in which a lower deck 9 is provided under each supporting leg 3 is shown. The lower deck 9 has substantially the same construction as the upper deck 1 in the embodiment shown in FIG. It is possible to construct the upper deck 1 and the lower deck 9 identically, thereby making it possible to use the millet on both sides. However, it is also possible to separately adapt the upper deck to a special function as a load support deck and the lower deck to a special function as a lower support deck. For example, it is possible for the upper deck and the lower deck to have different heights, in particular for the upper deck to have a greater height than the lower deck.

FIG. 2 shows the embodiment shown in FIG. 1, with the other configuration remaining unchanged, for passing the wheels of a forklift between the outer frame portion of the lower deck and the central cross portion bridging this frame portion. This shows a synthetic resin pallet modified to have four large cutouts 1o. These cutouts are rectangular in the exemplary embodiment, but they can also have other contours.

As in the embodiment shown in FIG. 3, the lower end of the support leg 5 can also be connected to a shoe 12 instead of the lower deck 9, in which case in the embodiment shown the two outer sides, 7 and There is an inner gap centered between these outer seven blocks. However, it is also possible to omit the central shoe or to provide a larger number of shoes 12 parallel to each other.

Furthermore, although not shown, the embodiment of FIG. 1, FIG. 2 or FIG. It is also possible to have a single deck pallet that does not have 12.

The walls of the support leg and the deck adjacent to the engagement opening 8 may be rounded outwards or provided with an inclined cut-out surface so that a funnel-shaped guide for the fork sump of the forklift is formed. Appropriate. Corresponding rounded part 14 of the support leg
can be seen in detail from FIGS. 8d, 9C, 10d, 11a and 12b. Similar roundings 15 can be seen in FIGS. 8b, 9b and 11a.

All of these synthetic resin pallets consist of a number of prefabricated components. At that time, Figures 4 to 7
In the figure, two are located on opposite sides of a synthetic resin pallet.
two outer shaped beams 16 are provided at one edge;
Their inwardly facing sides are connected to each other by inserts 18. The insert can be constructed as a single piece, but is shown in FIG. 4 as a two-piece insert 18.
, an embodiment with a four-piece insert 18 as shown in FIG. 5, a five-piece insert 18 as shown in FIG. 6 or a three-piece insert 18 as shown in FIG. 7 is advantageous. .

4, 5 and 6 for the outer shaped beam 16.
Two types of structures are illustrated in FIG.

The structure shown in FIG. 4 is shown in detail in FIGS. 11a and 11e, and the structure shown in FIGS. 5-7 is shown in detail in FIGS. 12a and 12b.

Common to all embodiments, the outer shaped beams 16 are each constructed as a single piece over their entire height. An upper string 20 and a lower string 22 are provided on the upper deck and on the lower deck or shoe, respectively, which extend approximately horizontally and are connected to each other by an intermediate web 24 placed on the outer edge of the plastic pallet. and forming a cross-sectional section that is open towards the insert.

The intermediate web 24 extends in a closed ring-like manner along the entire edge of the deck or deck and has a rounding 15 in the area of the engagement opening 8 .

“First” and “second” provided on the outer shaped beam 16
The supporting legs of `` can be provided in two types.

In both cases, the support leg forms a hollow cross-sectional section that is closed over its entire circumference. This hollow cross-sectional section is shown in Figure 1.
In the embodiment of FIGS. 2 and 4, it is supplemented by vertical intermediate walls 26 that intersect with each other, which intermediate walls pass through the support legs 4 or 5 and that are connected to each other by vertical intermediate walls 26 that intersect with each other and which extend through the support legs 4 or 5 and which are connected to each other. 10 is exposed on the top and/or bottom of the pallet. Their vertical penetration between the upper and lower surfaces of the pallets is also particularly clearly visible in FIG. 11c. Figures 1 and 2
As can be further seen by comparing Fig. 4 with Fig. 4,
The number of intermediate walls parallel to the outer edge of the pallet can be varied, i.e., whereas in the embodiment shown in FIG. 4 only one intermediate wall extends along the center line of the outer forming beam. In the embodiment of FIGS. 1 and 2, two such intermediate walls are shown. The same applies to the number of intermediate walls 26 perpendicular to the outer edge of the pallet.

In this penetrating arrangement of the support leg, the entire hollow cross-sectional section of the support leg, including the supplementary part, is constructed in one piece on the outer profiled beam.

However, as shown in FIGS. 3 and 5 to 7, the end surface of the support leg can also be formed from the insert body 18 side. In this case, the supplementary part of the support leg is at least one vertical first intermediate wall 27 and/or at least one second horizontal intermediate wall 2.
8 (Fig. 12b). In this case, it is expedient, as shown in this figure, to extend the upper chord 20, the lower chord 22 and the intermediate web 24 of the upper deck and, if appropriate, of the lower deck or shoe, also into the area of the support leg. If desired, only a horizontal intermediate wall 28 or only a vertical intermediate wall 27 can be provided in the support leg.

In this case, the area 3o of the supporting leg column 5 which is closed towards the outside of the pallet, together with the lower chord 22 of the upper deck and the upper chord 20 of the lower deck or shoe, forms a calot-like or box-like shape towards the insert. Open cross-section section 37
form. The insert 18 complements this cross-sectional section 37 with its outer circumferential web 36 to form a ring-shaped closed support cross-sectional section. At the same time, the outer circumferential web 36 connects the upper chord 20, lower chord 22 and intermediate web 2 of each deck or shoe.
The open cross-sectional sections formed by 4 and 4 are respectively closed into hollow cross-sectional sections of the first part, so that at the two edges at least in the upper deck, but optionally in the lower deck or A "first" hollow cross-sectional section extends horizontally in each shoe.Furthermore, a hollow cross-sectional section in each case extends vertically in the supporting foot or 5, which hollow cross-sectional section is responsible for its supplementary action. follows a support leg cross-sectional section which is closed at least over the entire circumference.The "first" hollow cross-sectional section 32 is still divided into individual Zenk-shaped sections 32 in FIG. 12b by a vertical intermediate wall 34. There is.

The same applies to the embodiment of FIG. 11a with respect to the outer shaped beam.

The inwardly open cross-sectional section formed by the upper chord 20, the lower chord 22 and the intermediate web 24 of the outer shaped beam 16 is shown in all the embodiments of FIGS. 4 to 7. Suitably, it is closed by a straight vertical edge strip of the insert 18 into a hollow cross-sectional section of 1°. In the embodiment shown in FIGS. 5 to 7, the cross-sectional section 3 of the support leg 4 or 5 is configured in the outer profiled beam 16.
7, a supplementary petri dish 38 in the form of a calotto or xex is molded together in the insert 18, which supplementary petri dish 38 is connected to the open cross-section section 3 of the relevant support leg.
7 and its intermediate wall 27 or 28.

This makes it possible not only to close the end faces of the corresponding support legs 4 and 5, but also to achieve large lateral dimensions of the support legs compared to the lateral dimensions of the outer shaped beam 16.

The configuration of both the support leg and the "first" hollow cross-section section can be optionally implemented in the various assembly embodiments of FIGS. 4 to 7, with these embodiments The shapes are merely indicative of suitable embodiments.

Inside its circumferential web 36, the insert is formed over a large area of at least the upper deck 1 and optionally also the lower deck 9 by vertical webs 40, which extend over the edge of the plastic pallet. A lattice structure is formed which is parallel to the sections and intersects each other at right angles, with rectangular honeycombs. Other honeycomb cross sections are also possible. The vertical webs connect horizontal stiffening webs 42 in an L-shape or a 1-shape on one or both sides at right angles to the corresponding inner surface of the upper deck 1 or the lower deck 2, as shown for example in FIG. 8b or FIG. 10b. By doing so, it can be further stiffened. However, such a structure, which is itself already very rigid, has a cross-sectional section that is closed all around the circumference and has a stiffness f-,C. insert body 18
From the side, in order to stiffen the body, in a manner not shown, also in the case of a single-piece insert, at least one other hollow cross-section section, i.e. a "second" hollow cross-section section, is joined together. It can be formed into. However, FIGS. 4-7 illustrate various advantageous ways of assembling such a "second" hollow cross-sectional section in the insert 18 from two or three sole-fabricated insert components. Arranging the "second" hollow cross-sectional sections of the wafers parallel to one another can be effected by suitably multiplying the arrangement described above.

In all the embodiments according to FIGS. 4 to 7, intermediate pieces 44 are provided, which on one side are connected to the corresponding one.
"A circumferential web 36 of the reservoir which complements and closes the hollow cross-sectional section 32 and a vertical web 4 forming a grid on the other side."
It has 0.

In the extremely simple embodiment of FIG. 4, two such intermediate pieces 44 are provided (see in particular FIG. 8a). 8th
As FIG. b shows, the lateral cross-sectional sections of each intermediate piece 44 on the sides facing each other are configured substantially the same as the lateral cross-sectional sections on the insert 18 side of the outer shaped beam 16 described above.

In this case too, a cross-sectional section is provided between the upper chord 20, the lower chord 22 and the outer vertical web 40 of the grid, which is open towards the other intermediate piece. Two such open cross-sectional sections of the same type in both intermediate pieces that are adjacent to each other are closed to one another over the entire circumference.
A second hollow cross-sectional section 46 is formed which extends along the centerline of the pallet equidistantly relative to the "first" hollow cross-sectional sections of both edges.

Upper half 20 and upper half 22 of both open cross-sectional sections forming optionally a "second" hollow cross-sectional section 46
be of different lengths or, in extreme cases, provide such an open cross-sectional section only in one intermediate piece 44 and connect it to a "first" hollow cross-section towards the outer shaped beam. In the same way as the surface section is closed, the edge strip 36 can also be closed with a corresponding edge strip.

The "second" hollow cross-sectional section 46 is marked in dashed lines in Figures 8a, 8C and 9a; the second hollow cross-sectional section 46 is similar to the first hollow cross-sectional section. It is divided into a number of box-shaped parts 35 by vertical intermediate walls 34.

In the embodiment shown in FIG. 4, the two edge-mounted support legs 5 and one central support leg 6 form a second hollow cross-section section 46.
penetrates through. The two complementary parts 48 and 50 of the two intermediate pieces 44 then complement each other and each have the same basic construction as described for the outer shaped beam 16 in the same embodiment according to FIG. Form a supporting leg.

In this case, the supporting legs are also each supplemented internally by vertical intermediate walls 26 that intersect with each other.

In this case, the hollow cross-sectional sections that are completely closed over the entire circumference of the outer support leg 5 complement each other in such a way that the "second" hollow cross-sectional section is also closed at the end face, which is explained in Section 8a. It is designated by the reference numeral 51 in the figure and FIG. 8b. Furthermore, the "first" hollow cross-sectional sections 32 are likewise closed off at their end faces by respective piercing legs in the outer shaped beam 16.

Furthermore, within the insert 18 there are three "third" hollow cross-sectional sections 5.
2 are configured. Two of them are both Detsuki 1
and 2 and extending between the supporting legs 4 installed at the corners of the pallet, which together with the "first" hollow cross-sectional section in the outer molded beam 16 form the hollow cross-sectional frame of the plastic pallet. another hollow cross-sectional section 52 extends between the central support legs 5 of the outer shaped beam 16;
Coupled with the "second" hollow cross section section 6, the "second"
An adjuvant cross section is formed within the insert that extends perpendicularly to the "and first" hollow cross-sectional section. The "third" hollow cross-sectional section is again divided into a plurality of box-shaped parts 55 by a vertical intermediate wall 54. Figures 8a and 8c
As can be seen, the central support leg has a width greater than the width of the third hollow cross-sectional section.

Due to the large cutout 10 in the lower deck, the first. The second and fifth types of hollow cross-sectional sections form Φ dividing frames between the central cruciform supplementary part and the hollow cross-sectional frame. In this case, all hollow cross-sectional sections are formed on their upper side by an upper cut 20 and on their lower side by an upper cut 22.

The embodiment shown in FIG. 5 differs from the embodiment shown in FIG. 4 primarily in the following points: instead of two intermediate pieces 44 are provided, of which Φ Each two in FIG. 5 complement each other to form the one shown in FIG. This embodiment is possible without changing other parts of the arrangement shown in FIG. Conversely, even in the case of the embodiment shown in FIG. 5, it is possible to provide a penetrating support leg as in FIG.

On the other side, as shown in FIG.

The support legs of the hollow cross-section section, like the support legs of the "1st" hollow cross-section section, can also be laterally shaped in such a way that they are closed at their end faces. be.

In this case, the central support leg 5 of the outer profiled beam is formed from this profiled beam and the two intermediate pieces 44 adjoining it, and the central support leg 6 is further formed from four mutually complementary parts of the four intermediate pieces 44. configured. The central support leg 5 at the edge of the insert 1δ as well as the corner support legs 4 each consist of two complementary components. The internal arrangement of the insert's support legs is illustrated in FIG. 9b for the support leg 5 as well as in FIG. 12b for the outer shaped beam 16. As can be seen, at least one vertical intermediate wall 27 and/or at least one horizontal intermediate wall 28 can be provided for internal stiffening of such a support leg.

The changes shown in FIG. 6 are possible, particularly for shoe pallets, but also for the pallet types described with respect to FIGS. 1 and 2, including single-deck pallets. This embodiment differs from the embodiment shown in FIG. 5 in the following points.

That is, between the two pairs of intermediate pieces 44 an inner shaped beam 58 is inserted as a separately prefazed component. Its construction is illustrated in detail in Figures 13a and 13b. The inner shaped beam 58 has an upper chord 20 and a lower chord 22 in each deck, both of which are different from the outer shaped beam 16 and connected to each other by an intermediate web 24 which is centrally located and A vertical intermediate wall 26 divides the connecting intermediate piece 4 into a number of cross-sectional sections that are open toward the rear. These cross-sectional sections are supplemented by an open hollow cross-sectional section of similar but in this case shorter dimension in the middle piece + cow edge to form a "second" section in the same way as already described for FIG. A hollow cross-sectional section 46 is formed.

Between the upper deck 1 and the lower deck 2 extends, again in monolithic form, a mutually complementary circumferential region 60 of the support leg 5 or 6, the support legs 5 and 6a having at least one vertical intermediate wall 27 and (or) internally stiffened by at least one horizontal intermediate wall 28;

The intermediate web 24 forms two 1 2'' hollow cross-sectional sections in pairs for the intermediate piece 40 which connects on either side of the inner shaped beam 580.

As specifically noted in FIG. 9C for the sake of clarity of the embodiment shown in FIG. It can be a closed cross-sectional section. This can also be seen in the cross-sectional view of FIG. 9b. The only difference compared to the construction of the support legs is that in the area of the shoes 12, the complementary areas extend over the entire length of the pallet. The shoe 12 can also be stiffened in a manner not shown, like the support leg, by vertical and/or horizontal intermediate walls, as shown for the vertical intermediate wall 27 in FIG. 9b. .

A "third" hollow cross-sectional section 5 in the edge of the insert 18
2 are each molded by lateral cores in only one intermediate piece 44, whereas the "third" formed between the two intermediate pieces 44, which connect cleanly to the outer molded beam,
The "hollow cross-sectional section 52a" is composed of two complementary hollow cross-sectional sections 46 in the same way as the "2n" hollow cross-sectional section 46 in FIG. As shown in Figure 9b, it is formed from an upper string 20, a lower string 22, and an intermediate web 24. This arrangement is not only provided in the case of shoe pallets, but also that along the outer forming beam 16, instead of only one intermediate piece 44 as in FIG. It is always suitable when provided as shown in Figure 6.

Furthermore, FIG. 7 shows a combined embodiment of the embodiments of FIGS. 4, 5, and 6.

In this case, the supporting legs 5 formed on the outer molded beam 16 are constructed with closed end faces as in FIG. For the detailed configuration, the explanation of FIG. 5 can be referred to.

As in FIG. 4, in FIG. 7 only one intermediate piece 40 is provided over the outer shaped beam. On the other side, as in FIG. 6, an inner shaped beam 58 is provided between the two intermediate pieces 44;
8 shows the hollow cross-sectional section of the 2nd degree in Figures 11a and 1.
As shown in FIG. 1C, an open cross-sectional section (FIG. 11a) between the upper chord 20, the lower chord 22 and the intermediate web 24 is formed in conjunction with an intermediate piece 44 connecting on both sides. On the other hand, FIG. 7 shows that, in the same way as described for the outer shaped beam 16 of FIG. It is characterized by being formed into a single piece. In this case again, the open-ended hollow cross-sectional sections, which are closed around the entire circumference of each support leg, are supplemented by vertical intermediate walls 26 that intersect at right angles to each other, the number of which extends in both directions to the outside. It can be varied in the same way as for shaped beams.

In the exemplary embodiment, three such intermediate walls are provided in the longitudinal direction and two such intermediate walls in the transverse direction of the intermediate shaped beam shown in FIG. 11b.

The second hollow cross-sectional section 46 extends along the entire length of the outer profile beam 16 except in the area where the support legs 5 and 6 are arranged. The third hollow cross-sectional section extends correspondingly between the profiled beams 16 and 58, except in the area of the support legs, and between the fifth and sixth support legs. However, analogous to FIGS. 9a and 9b, it is also possible to carry out an arrangement in which the "second" and "third" hollow cross-sectional sections also pass through the support leg, possibly leading to the support leg. the supplementary member is adapted to the supplementary member of the hollow cross-sectional section, such that the hollow cross-sectional section of the deck and/or shoe and the corresponding support leg are integrally interconnected in an operational manner; So do it.

As can be seen from Figures 11a, 11C, 11d and 11e, the upper deck 1 can be replaced with the lower deck 9 as needed.
Alternatively, it may have a greater height than the shoe 12 as the case may be.

[Brief explanation of the drawing]

The accompanying drawings show embodiments of the present invention, and FIG. 1 is a perspective view of a multi-deck pallet according to the present invention in which the upper and lower decks are constructed in substantially the same manner.5. A perspective view of a multi-deck pallet according to the invention with a large cutout for passing the wheels of a lift vehicle; FIG. 3 is a perspective view of a 7-Y pallet according to the invention; FIG. FIG. 5 is an exploded plan view of a four-piece structure of a deck pallet, multiple deck pallet, or shoe pallet according to the present invention having a deck configuration.
Six single-deck pallets, multi-deck pallets or shoe pallets according to the invention having the upper deck configuration shown in the figures.
FIG. 6 is an exploded plan view of the same as the above in the case of a seven-piece structure; FIG. 7 is a book having an upper deck configuration of a hybrid type of FIG. 1 or FIGS. 2 and 3. Figure 8a is an exploded plan view of the five-piece structure of the single-deck gulet, multi-deck pallet, or shoe pallet according to the invention;
Fig. 8b is a side view of the intermediate piece shown in Fig. 8a, and a half sectional view taken along line A-A in Fig. 8a (
The solid lines indicate the embodiment shown in FIG. 2 and are supplemented by dashed lines to indicate the embodiment of FIG. 1), and FIG. 8C shows the embodiment shown in FIG. A bottom view of the intermediate piece, FIG. 8d is shown in FIGS. 1 and 2, and an end view of the intermediate piece shown in FIG. 8a of the embodiment, FIG. 8e is a line BB in FIG. 8C. 9a is a plan view of the intermediate piece shown in FIG. 5, which is also used in FIG. A side view of the intermediate piece of the pallet sump shown in Figure 9a and a half sectional view taken along line C-D in Figure 9a, Figure 9C is an end view of the intermediate piece shown in Figure 9a, Figure 10a
The figures are shown in FIG. 7, a plan view of the intermediate piece, and FIG.
A side view of the intermediate piece shown in Figure 0a and D- in Figure 108.
A half-sectional view according to line D (the solid lines refer to the embodiment shown in FIG. 2 and are supplemented by dashed lines to the embodiment shown in FIG. 1), FIG. 10
Figure 10d is a bottom view of the intermediate piece shown in Figure a, and Figure 10d is a diagram of the embodiment shown in Figure 1 and Figure 10a of the embodiment shown in Figure 2.
10e is a sectional view taken along the line E--E in FIG. 10C, and FIG. 11a is an end view of the intermediate piece as shown in FIG. 4. Figure 11b is a side view of both sides of the inner formed beam, and is a plan view of the inner formed beam shown in Fig. 7 (if the roundness at the end face is slightly changed, it is also applicable to the outer formed beam shown in Fig. 4). ), Figure 11C is a sectional view taken along the line F-F in Figure 11b, and Figure 1ID is the 11th cross-sectional view of the inner shaped beam.
Figure 1ie is a cross-sectional view taken along line G-G in Figure 11b, Figure 12a is a cross-sectional view taken along line G-G in Figure 11b, and Figure 12a is a cross-sectional view taken along line G-G in Figure 5 through Figure 7. A plan view of the shaped beam of fjl, Figure 12b is a side view of the outer shaped beam shown in Figure 12a, and H-1- in Figure 128.
13a is a plan view of the inner shaped beam shown in FIG. 6, and FIG. 13b is a side view of the inner shaped beam. The correspondence relationship between the main parts shown and the symbols is as follows: 1... Upper deck, 3-6... Support legs, 8... Fork engagement opening, 9... Lower deck, 12 ...Shoe, 16..Outer forming beam, 18..Insert, 20
... Upper chord, 22... Lower chord, 24... Intermediate web (joining web), 32... "First" hollow cross-sectional section, 46... "Second" Hollow cross section section, FIG
, 4 FIG, 5 FIG, 6 ・-Tsubasa Insei FIG, 7 FIG, 8d FIG, 8eFIG, 1
0d FIG. 10eFIG, 10
a FIG, 10b FIG, 10c FIG,
12b

Claims (1)

[Claims] 1. A synthetic resin pallet joined together from a number of molded pieces, which includes an upper deck that supports cargo, a number of supporting legs that form fork entrances for forklifts between them, and a lower deck. or a shoe, at least one of the upper deck and the lower deck or shoe comprising a plurality of outer shaped beams and an insert joined to the inwardly facing sides of the shaped beams; Both shaped beams have an upper chord and a lower chord connected to this upper chord by an intermediate web and have a cross-sectional shape closed to the outside and open to the inside. There is no
Both of these shaped beams exhibit a "first" hollow cross-sectional section closed along the entire circumference, supplemented by a connection with the insert, which "first" hollow cross-sectional section is also hollow. In the type transitioning to a support leg configured as a cross-sectional section, the insert (18) thereof, at least in the upper deck (1), has at least one pair of intermediate pieces (44) connected in parallel to each other. , at least one of the intermediate pieces forms a cross-sectional shape that is open toward the outside, and this cross-sectional shape is supplemented by the other intermediate piece and the periphery is closed. Category (4
6) A synthetic resin pallet characterized by forming: 2. The insert (18) has at least one inner formed beam (58) between the outer formed beams (16), which inner formed beam is connected to at least one deck (
1, 9), optionally also in the central shoe (12), an upper string (20) and a lower string (22) connected thereto via an intermediate web (24); These combine with each other to form a cross-sectional shape that opens laterally,
and intermediate pieces (44) are connected to both sides of the inner profiled beam, which intermediate pieces complement the open cross-section of the inner profiled beam to form a "second" hollow cross-sectional section (46).
) A synthetic resin pallet according to claim 1. 3. The inner shaped beam (58) has its middle web (24)
2. The synthetic resin pallet according to claim 2, wherein the synthetic resin pallet has a cross-sectional shape that opens laterally, together with the upper string (20) and the lower string (22) on both sides of the string. 4. “First” hollow cross-sectional section (32) and/or “
4. A plastic pallet according to claim 3, wherein the second '' hollow cross-sectional section (46) is also closed at the end face. 5. At least one support leg (5, 6) of the insert (18)
5. A synthetic resin pallet according to claim 4, in which the "second" hollow cross-sectional section (46) emanates from the "second" hollow cross-sectional section (46). 6. Components (44, 58) in which the support legs (5, 6) of the insert (18) form a "second" hollow cross-sectional section (46)
6. A synthetic resin pallet according to claim 5, which is combined in a single piece with. 7. Claim in which the supporting legs (5, 6) of the insert (18) form a hollow cross-sectional section that is closed all around and pass vertically through the "second" hollow cross-sectional section (46). A synthetic resin pallet according to item 5. 8. The supporting legs (5, 6) of the insert (18) form a hollow cross-sectional section that is closed over the entire circumference, the mutually complementary circumferential regions forming a "second" hollow cross-sectional section ( 4
6) The synthetic resin pallet according to claim 5, which is constructed in a single piece with mutually complementary parts. 9. A synthetic resin pallet according to claim 8, wherein the support legs (5, 6) of the insert (18) are also closed at their end faces. 10, the deck (1, formed by the intermediate piece (44)
9. The synthetic resin pallet according to claim 9, wherein the portion 9) has vertical webs (40) arranged in a honeycomb shape or a cross lattice shape. 11. insert (18) into second hollow cross-sectional section (42)
at least one third hollow cross-sectional section (52
) The synthetic resin pallet according to claim 5, wherein the synthetic resin pallet is provided with: 12. Plastic pallet according to claim 11, wherein the "third" hollow cross-sectional section (52) is closed at its end face by an outer shaped beam (16). 13. At both edges of the plastic pallet, in each case a "third" hollow cross-sectional section (52) complements the "first" hollow cross-sectional section (32), so that the plastic pallet Claim 1 forming a hollow cross-sectional frame of
The synthetic resin pallet described in item 1. 14. According to the patent claim, one "third" hollow cross-sectional section (52) or a number of mutually parallel "third" hollow cross-sectional sections connect the central regions of both outer shaped beams (16) to one another. Synthetic resin pallets as described in scope item 13. 15. In the case of multi-deck pallets, the "first" and "third" hollow cross-sectional sections (32, 5
2) at least one “second” hollow cross-sectional section (4
6) and at least one further "third" hollow cross-sectional section (52a) joining together the central regions of the two outer shaped beams (16), forming a four-part frame;
15. A synthetic resin pallet according to claim 14, wherein each of these partial frames has large cutouts (10) for passing the wheels of a forklift. 16, intermediate piece (44) and/or inner shaped beam (
16. A synthetic resin pallet according to claim 15, wherein each of the pallets 58) is constructed in a single piece over its entire height. 17. A number of intermediate pieces (44) are connected to each other in the longitudinal direction of the outer shaped beam (16)
Synthetic resin pallet as described in section.