WO2018229321A2

WO2018229321A2 - Detachable pallet

Info

Publication number: WO2018229321A2
Application number: PCT/ES2018/070426
Authority: WO
Inventors: Jose Luis Marconel Carpio; Tomas Andres GARCIA GUILLEN
Original assignee: Logicpalet World, S.L.
Priority date: 2017-06-14
Filing date: 2018-06-14
Publication date: 2018-12-20
Also published as: TW201904821A; WO2018229321A3; TWI775873B

Abstract

The invention relates to a detachable pallet which comprises a plurality of slides and a plurality of cross-members, wherein the slides comprise anchoring elements, both rigid stops and flexible stops, which contribute to attaching the cross-members to the slides, all in cooperation with tongues and grooves provided in the sides of the cross-members, which are inserted into one another creating a solid, robust joint and a complete load surface. The pallet can also have a tie rod joined to the bottom of the slides, securing same and providing greater robustness to the assembly, allowing it to be used on roller lines.

Description

REMOVABLE PALLET

The present invention, as the name implies, refers to a removable pallet comprising a series of skates and a series of crossbars where both are firmly joined by geometries and pressure adjustments without the need for any other element or material. of Union.

For the fixing of the crossbars to the skates, no screws or any other type of joint parts are required, but the geometry of the pieces is sufficient to keep them solidly joined.

The sector of the technique to which the invention belongs is that of transportable structures. BACKGROUND OF THE INVENTION

Since ancient times, pallets have been used to transport loads, however, such pallets must make several trips without cargo, which sometimes, due to their volume, makes their recovery uneconomic.

It is also not easy to sell new pallets over long distances because the route between the manufacturer and the first user is also made without load.

To favor the transport of more pallets in the same transport unit, such as a truck or a container, removable pallets have been devised, so that, once they have fulfilled their function with loading in a transport, they can be disassembled to optimize space.

The removable pallets also favor the replacement of broken pieces because in non-removable ones, the breakage of a piece makes the pallet unusable in most cases with the economic and environmental cost that this entails. Among the background of removable pallets we find the following:

The utility model ES245986 refers to a removable pallet, although in order to give rigidity to the assembly it requires that the longitudinal elements be joined together both superiorly and inferiorly, which raises the number of pieces to be used in the assembly.

The utility model ES1018770U, refers to a removable pallet whose different elements are joined together by a series of studs crossed by rods, therefore requiring such joining elements in addition to the longitudinal and transverse parts that constitute the structure itself .

The utility model ES1033284U refers to a removable pallet whose pieces are joined together thanks to a sandwich-like arrangement where to the central part have been added protrusions suitable for assembling with holes made in the outer parts. This solution presents some manufacturing problems essentially derived from the protuberances that must be attached to the bar at a later stage as well as transport problems since the existence of the protuberances prevents optimizing the spaces in the transport when the pallet is removed.

The utility model ES1018770U refers to a removable pallet configured on the basis of a horizontal platform that has cutouts as a tab being that these tabs must be able to deform until they adopt a vertical position, which limits the materials to which this can be applied technical solution

European patent EP0516681 published in Spain as ES2093698 refers to a removable pallet consisting of two hollow metal skates, facing each other whose facing faces have a series of holes suitable for introducing and fixing crossbars that have grooves on their underside of disposition and suitable form to settle on the interior vertical walls of said skates. This technical solution requires that the stringers be metallic. US Patent US2007 / 0221537 refers to a three-dimensional structure made from various pieces that are assembled together where such pieces are made or at least filled with several layers of cardboard or corrugated paper. This patent requires, for its execution, several different types of parts. On the other hand, assemblies generate protrusions in the structure that make handling and storage difficult.

US Patent US8113129, refers to a pallet formed by different pieces, skates and crossbars, which are assembled together, each of those skates and crossbars being composed of two pieces that, when joined, trap the piece with which it they cross and, in turn, get trapped with it. The assembly thus raised generates protrusions that hinder the handling and storage of the pallet.

US patent US2009 / 0298015 refers to a removable pallet formed by a series of pieces, stringers and crossbars, which intersect forming the pallet, being joined by pressure adjustment and reinforced the union by rods that cross the pieces longitudinally once mounted the pallet. In this patent different parts and rods are required and, given the way of joining, protrusions are generated that hinder the handling and storage of the pallet.

The Spanish patent P20133046, of the applicant himself, refers to a pallet formed by a series of skates and crossbars where the skates, arranged two by two and in opposite position with respect to each other, are closed by trapping the housed cross member pieces. in some grooves of the stringers, thereby generating a solid structure.

The patent EP14741117.7 also of the applicant, refers to another structure, also mountable and removable without the need of accessory elements of screws or adhesives that has skates and crossbars, where such crossbars, all the same, varied their position to fit in recesses or slits existing in the skates, and where such skates were arranged alternating one in a direction and the next in the opposite, leaving the crossbars caught in the recesses when aligning the skates.

US patent US4077334 refers to a pallet made of aluminum skates and crossbars that fit together by pressure adjustment. In this type of pallet, due to its mechanics, it is not possible to obtain a full load surface, but it must necessarily be left distance between some crossbars and others to allow assembly and disassembly since the crossbars are deformed laterally for snap fit . Another problem presented by this type of pallet is that the pressure or clamp is made by the side of the crossbar which, being a long piece, can easily lose pressure either by use or by blows, which makes it unusable. In addition it cannot be done in plastic, it must be done in aluminum with the limitations of cost and production of said material as well as the little recommended of its storage in the open air or in maritime transport.

US patent US3878796 refers to a plastic pallet whose parts, skates and crossbars, fit by sliding the crossbars in the stringers as the crossbars have a geometrically complementary section with holes existing in the skates. For the mechanics of this patent it is necessary the existence of a separation between the crossbars.

None of the exposed patents allows to generate a structure that has a complete surface, as is required for certain uses, as well as a quick and simple assembly that can be made piece by piece without excessive effort, all with optimal behaviors of resistance in a double sense; Resistance of the pallet that is kept mounted without impact, without being disassembled, as the resistance of each piece that does not deform or lose its usefulness due to the blows and collisions to which, in normal use, it will be subjected. DESCRIPTION OF THE INVENTION

To overcome the above problems, a removable pallet with a full load surface is proposed, formed by a plurality of crossbars, which is assembled without the need for any type of screws or additional elements to ensure the joints between the parts that compose it.

Obtaining a full load surface is essential for use in certain sectors, and the possibility that it can be disassembled into small parts is very advantageous for empty transport.

On the other hand the non-existence of screws or other joining materials, facilitates the replacement of a broken piece and its recycling, unlike other pallets where a broken piece forces to change the entire pallet with the economic and environmental cost .

On the other hand, the return to their company of origin is much cheaper because they can be disassembled and take up much less space. A pallet like the one proposed also has the advantage of being repaired simply by simply changing the damaged part or pieces, unlike other types of pallets where the breakage of a part implies the need to change the entire pallet. This pallet, thanks to its mechanics, can be made in any moderately rigid material although the possibility of being able to do it also in plastic, without reducing its strength and robustness characteristics, is an added advantage.

On the other hand, the simplicity of their joints makes their assembly and disassembly especially simple.

The pallet is built with skates and crossbars. We will call each one of the pieces that constitute the lower structure of the pallet as beams that support the load surface thereof. We will call each one of the pieces that, arranged perpendicularly on the skates, are fixed to them and configure the loading surface of the pallet.

Each of the skates has, in its upper part, a plurality of anchoring elements comprising one or more rigid stops and one or more flexible stops.

The crossbar pieces have a geometry that allows it while while one of its major sides is trapped by the rigid stops of the skates, its other major side is fixed, either with a flexible stop, by means of pressure adjustment, or with another crossbar adjusting for geometry.

The crossbars, with the exception of the outer crossbars, once installed, are in contact with each other on their sides, generating a full load surface.

In this way, the rigid stops prevent the advance of the crossbars at a point as well as their vertical displacement, while a flexible stopper or an adjacent crossbar prevents the crossbar from backing off and freeing itself from the action of said rigid stopper.

Thus each crossbar is trapped by its major sides. One of its major sides stops with a rigid stop and is trapped by its lower hollow, while the other major side can stop with another crossbar or with a flexible stop.

In a possible execution, which we will call type A execution, each of the crossbars is trapped on one of its major sides by rigid stops and on its other side by the flexible stops, thereby generating the pallet loading surface.

In another possible execution, which we will call type B execution, all the crossbars that make up the surface of the pallet are arranged in the same orientation, and each These crossbars are trapped on one of their major sides by rigid stops and on the other side by the adjacent crossbar, with the exception of the last crossbar that secures the assembly in a pressure closure on a flexible stop, thereby generating the surface of pallet load

In another possible execution, which we will call type C execution, one part of the crossbars is arranged in one direction and another part of the crossbars is arranged in the opposite direction. Each of these parts or groups of crossbars behaves mechanically as a type B execution.

In this type of execution type C, the skates can have a double rigid stop, that is, with a lower hollow oriented towards each end of the skate, so that it is in that stop where the groups of crossbars meet, facing each other, extending then each group of crossbars towards the ends of the skate or skates or have rigid stops at the ends of the skates and flexible stops at the central part of the skate.

In any of the executions, the crossbars are in intimate contact with each other, generating a full load surface and contributing, with each other, to the fixation of the assembly.

So that the pallet can mechanically be mounted in such a way, the parts have the following characteristics: The skate pieces have a series of anchoring elements of the skate in their upper part, among which we distinguish rigid stops and flexible stops.

We will call the anchoring elements of the skate generically to the rigid stops and the flexible stops. We will call a rigid stop to the anchoring element of the skate, regardless of its geometry, which limits the movement of the crossbar both in the longitudinal direction of the skate and vertically. To do this, preferably this rigid stop will have a geometry comprising a lower hole, such as an inverted "L" or any geometry that contains it.

We will call a flexible stop to the anchoring element of the skate, regardless of its geometry, which comprises a deformable element that gives in to the pressure exerted by the crossbar when installed and, when returning to its initial position taking advantage of a hole in the crossbar, occupies that hole and holds the crossbar against the skate.

For this, it can have an arrowhead or roof geometry, or any other that allows the indicated maneuver.

We will call roof to any geometry that presents a diagonal plane in the contact area with the crossbar during its assembly operations.

Rigid stops and flexible stops are aligned and distributed longitudinally on a regular basis across the top of each skate.

The distribution and number of rigid and flexible stops will vary depending on the type of execution desired. The skates also have some emptying on their sides that cross across the body of the skate, these being suitable for insertion into them the extensions of transport and stacking machines as can the pallet trucks. So that these empties do not compromise the strength of the structure, they are closed at the bottom by a reinforcement.

The skates are preferably hollow to be lighter, internally comprising a rib structure that gives the skate adequate strength. The skates can be made in two pieces, upper and lower, joined together, which lowers manufacturing and facilitates demolding. The crossbars are flat pieces suitable for staying on the skates perpendicular to them, comprising complementary elements with the rigid stops and flexible stops existing on the skates.

There are two types of crossbars, internal crossbars and external crossbars.

We will call internal crossbars to the crossbars that are arranged between two other crossbars, be they of any type and in close contact with them.

We will call outer crossbars to the start and end crossbars of the loading surface and, therefore, one of its major sides, the outer side, is visible, the other side being, the inner side in intimate contact with the crossbar adjoining, usually an inner crossbar.

The major sides of the inner crossbars have holes that are used interchangeably to be anchored with the rigid stops or with the flexible stops that we will call anchor holes.

In the same way, the internal crossbars also present, on the sides of their major sides, a complementary tongue and groove with the tongue and groove of the adjacent cross members.

The outer crossbars only have this tongue and groove on the side of one of its major sides, specifically on its inner side, while its outer side has blunt edges and lacks tongue and groove, although it does present the anchoring holes. The tongue and groove of a cross member is complementary to the existing tongue and groove adjacent sides of the adjacent cross member (s) being the adjacent cross members inserted between them by the tongue and groove. Thus, when the pallet is mounted, the crossbars are closely related, being arranged next to each other and inserted together by the tongue and groove.

The crossbars can comprise flanges as a flange to help fix the load.

The tabs of the inner crossbars are located on their smaller sides, specifically protruding from their smaller sides and we will call them side flanges.

The tabs on the outer crossbars are located on the outermost side, specifically protruding from its outer side and we will call them front tabs.

In a preferred embodiment, the crossbars, both exterior and interior, are hollow to favor their lightness and have internal ribs to give strength to the whole.

The upper and lower surface of the crossbars can have perforations or weft to favor their lightness and, in a proposed execution, both the upper and lower surface of the crossbars, have a table, understanding as such a series of alternating longitudinal gaps with zones covered longitudinal, as a fence.

The removable pallet you are interested in can also comprise lower braces arranged perpendicular to the skates that join them together, favoring the robustness of the assembly as well as the use of pallets in roller lines. BRIEF DESCRIPTION OF THE FIGURES

FIGURE 1 shows a pallet, in explosion, where the skates (1) and the crossbars (2) are seen, with internal crossbars (3) being seen with their side flanges (4) and the tongue and groove (5) on their major sides.

The outer crossbars (6) do not have tongue and groove on their outer side and have their blunt edges (7).

The skates comprise a body whose upper part shows the anchoring elements distinguishing rigid stops (8) and flexible stops (9).

The body of the skate has some empty (10) suitable for inserting in them the extremities of a pallet truck for easy transport and handling. These emptyings are closed inferiorly by a slat (12) that gives strength to the assembly and allows its use on roller lines. FIGU RA 2 shows an exploded pallet, in another possible embodiment, where in its central part there are two opposing flexible stops (9), so this pallet is of type C, which has two groups of crossbars in opposite orientation one Regarding the other. This figure shows a lower brace (11) in position to join the pallet structure, specifically at the bottom of the skates. This brace, optional, gives robustness to the assembly and favors the use of pallets on roller lines.

FIGU RA 3 shows an example of a skate where the rigid stops (8) each having a lower hole (12), and the flexible stop (9), in this case in the form of an arrow or a middle, are more clearly visible. arrow showing a deformable element in the upper part of this flexible stop, in this case a roof (17) capable of yielding to the pressure exerted by the crossbar and then returning to its position again. FIGURE 4 shows a skate run, in this case carried out on the basis of two pieces, one upper and one lower, and having two flexible stops (9) opposed in their upper central part and a plurality of rigid stops (8) in each of the two longitudinal halves of the skate, those of one half being oriented in the opposite direction to those of the other half. The inner ribs of the skate can also be seen in this figure. FIGURE 5 shows an outer crossbar (6) seen from the inner side (19), where the anchoring holes (13), the tongue and groove (5) can be seen on the inner major side, the flanges, in this case front flanges (14), the blunt edges (7) and the recesses (15) that give lightness to the crossbar. FIGU RA 6 shows an outer cross member (6) from the side of the outer side (18) where the front flanges (14), blunt edges (7) and anchor holes (13) of the outer side are appreciated.

FIGU RA 7 shows an inner crossbar (3) with the side flanges (16), the anchoring holes (13), and the tongue and groove.

FIGU RA 8 shows an assembled pallet, of the type of which each skate piece is formed by two parts that are constantly joined together being its essential advantage in the manufacturing stage. This pallet also includes braces on its bottom. It can be seen how the crossbars are in intimate contact with each other on their sides, generating a full load surface.

FIGURE 9 shows a pallet mounted in another possible embodiment. It can be seen how the crossbars are in intimate contact with each other on their sides, generating a full load surface.

DESCRIPTION OF AN EXECUTION MODE OF THE INVENTION

A form of execution is set forth here that is not limiting but expository, since there are, as explained in the description section, different possible configurations and, in addition, the present patent provides technical solutions applicable to other unexposed configurations. The removable pallet comprises a plurality of skates (1) in particular three and a plurality of crossbars (2), specifically six, of which four are internal crossbars (3) and two are external crossbars (6), although the number It may vary in other executions.

The skates comprise in its upper part a series of anchoring elements, specifically six rigid stops (8) and a flexible stop (9) although the total number and of one type and another may vary in other executions.

The rigid stops comprise an inverted "L" shape that generates a lower gap (12), suitable for one of the anchoring holes (13) of a cross member to be accommodated therein, said crossbar being trapped.

The flexible stops (9) have an arrowhead section and have a deformable roof (17) such that the crossbar, in the assembly maneuver, presses downwards vertically on the roof (17) of the flexible stop (9), it causes said roof to give way to the crossbar so that, once the roof finds the appropriate anchoring hole (13), return to its initial position invading the anchoring hole and leaving the crossbar fixed.

In the execution explained here, the pallet is mounted as follows. The skates (1) are arranged in parallel to the appropriate distance from each other and all oriented in the same direction.

The first cross member that is located, an outer cross member (7), is placed abutting the rigid stops (8) of the end of the skates, inserting such rigid stops into the anchoring holes (13) of the outer side (18) of the outer crossbar With the rigid stops inserted in the anchor holes (13) on the outer side, the cross member is supported on the skates.

The inner side of this outer crossbar is in contact with the following rigid stops, on the part where they do not have a lower gap.

In these rigid bumpers, the following crossbar is inserted, this time an inner crossbar, which is anchored to the rigid bumpers and, when in intimate contact with the outer crossbar already arranged on the skates, holds it thanks to the tongue and groove system (5 ) of both that is complementary in its adjacent sides.

This operation is repeated and thus each crossbar that is located contributes to the previous one. Finally, another outer cross member is located which, on its inner side, has tongue and groove, contributing to fix its immediately previous crossbar, while with its outer side, presses on the roofs (17) of the flexible stops of that end of each skate, causing these to yield allowing the sliding of the crossbar until the roofs, in a forced position, coincide with the anchoring holes (13) of the outer side of the outer crossbar that is being mounted, and return to their natural position occupying such anchoring holes and being fixed that crossbar and all the others when closing the set.

In this way a complete loading surface is configured, without separations between the crossbars.

Each skate is crossed by two emptyings (10) of adequate size so that the extensions of transport and stacking machines are inserted in them as can the pallet trucks.

These recesses are closed at the bottom by a slat (12) that contributes to give robustness to the skate and allows its use on roller lines. The skates are hollow to gain lightness, with a series of internal ribs to solidify the skate.

The crossbars, both the exterior (6) and the interior (3) are hollow and form a complete surface, without prejudice to the existence of a weft to lighten the whole.

This surface is bounded by peripheral tabs, there are front (14) and side (16) tabs. These tabs contribute to immobilize the load, avoiding slippage.

At the structural level there are no differences between some crossbars and others, which can be interchangeable, however, for reasons of utility, handling and safety, the outer crossbars (6) have been provided with blunt edges (7).

The pallet can also incorporate, on its lower part, a series of braces (11) joined by geometries to the base of the skates, and that contribute to give solidity to the assembly while facilitating its use in roller lines or in other irregular surfaces, avoiding snagging.

Claims

1. - REMOVABLE PALLET of the type comprising a plurality of skates (1) and a plurality of crossbars (2) characterized in that it comprises:

to. A plurality of skates (1) comprising:

i. Anchoring elements, these anchoring elements being rigid stops (8) and flexible stops (9), where the rigid stops have a lower gap (12) and the flexible stops comprise a deformable element.

ii. A series of dumps (10) that cross the body of the skate,

b. A full load surface comprising:

i. A plurality of crossbars, intimately arranged with each other, comprising outer crossbars (6) inner crossbars (3), where each crossbar has anchoring holes (13) on its major sides, and where the inner crossbars have a tongue and groove on their sides older and the outer crossbars have a tongue and groove (5) only on its inner side (19), the tongue and groove (5) being a complementary crossbar with the existing tongue and groove adjacent sides of the adjacent crossbars, the adjacent crossbars being inserted together by the tongue and groove.

2. - REMOVABLE PALLET according to claim 1 characterized in that the rigid stops (8) and flexible stops (9) are located at the top of the skates (1).

3. - REMOVABLE PALLET according to claim 1 characterized in that the rigid stops (8) comprise an inverted "L" shape.

4.- REMOVABLE PALLET according to claim 1 characterized in that the deformable element of the flexible stops (9) is a roof (17).

5. - REMOVABLE PALLET according to claim 1 characterized in that the loading surface comprises perimeter flanges, both side flanges (16) and front flanges (14).

6. - REMOVABLE PALLET according to claim 1 characterized in that it also comprises braces (11) attached to the bottom of the skates. (one).

7. - REMOVABLE PALLET according to claim 1 characterized in that each skate is constructed in two parts, one upper and one lower.

8. - REMOVABLE PALLET according to claim 1 characterized in that the outer crossbars (6) have blunt edges (7).

9. - REMOVABLE PALLET according to claim 1 characterized in that the rigid stops (8) and the flexible stops (9) are aligned.

10. - REMOVABLE PALLET according to claim 1 characterized in that the recesses (10) are closed lower by slats (12).