KR20130000562A - Magnesium pallet - Google Patents

Abstract

PURPOSE: A magnesium palette capable of reducing logistical costs by reducing a transport fuel is provided to reduce the weight of a palette with a certain strength maintained and to reduce the environmental contamination by re-use. CONSTITUTION: A palette is made of a magnesium material. The surfaces of a beam and a plate are surface-treated with the plasma-electrolytic oxidation. The surface of the plate is etching-treated to have multiple concavo-convexes formed. The plate and the beam are combined by self-piercing riveting. Multiple sub-beams(12) are positioned respectively in a certain distance on both sides of a center beam(11). The body frame(10) includes the center beam and the first front plate(13) fixed on and combined with one side of the front surface of the sub-beam. At least one mobile beam(21) is inserted into one side of the center beam or the sub-beam and moves with sliding on the center beam or the sub-beam. Multiple moving frames(20) includes a second front plate(22) fixed on and combined with one side of the front surface of the mobile beam. The mobile beam having a larger diameter than that of the sub-beam inserted into the inside of the mobile beam is movable toward the direction in which the moving frame is orthogonal with the longitudinal direction of the center beam. The center beam is provided on one plane of the center with a spacing support component(14) protruded or recessed by the elasticity of a spring. A first mobile beam(21a) inserted into one side of the sub-beam moves with sliding on the sub-beam. A second mobile beam(21b) moves with sliding on the center beam and has an opening toward the center beam.

Description

Magnesium pallet

The present invention relates to a pallet for cargo loading, and more particularly, to a magnesium pallet, which is made of a magnesium material, the pallet is light in weight and can vary the loading area of the pallet according to the cargo load.

Pallets are the pedestals for transporting and storing cargo in warehouses, factories, etc. Currently, pallets are used by manufacturers and distributors as a means of freight transportation.

Pallets are mainly made of wood and plastic materials. Wooden pallets are vulnerable to durability and fire, and when exported to overseas, additional heat treatment or fumigation should be performed for protection according to environmental regulations. , Incineration or return action.

Plastic pallets are used to solve these problems, but plastic pallets have a recycling rate of only 25% and a large amount of dioxins are generated during the recycling process, which is a major cause of environmental pollution.

In recent years, wood and plastic pallets have been replaced by steel pallets. However, steel pallets are heavy and weak to corrosion, which causes the need for post-treatment such as plating, and increases the cost of steel materials, resulting in high production costs.

And steel pallet is smooth surface is not easy to load cargo, in order to solve this problem, Korean Patent No. 91602 to prevent slipping by inserting a non-slip and buffer plate on the surface to prevent slipping and damage by impact A technique relating to iron pallets has been disclosed. However, inserting such a non-slip and buffer plate takes too much manufacturing cost to produce the pallet.

On the other hand, when loading and moving the goods on the pallet, a pallet having a loading area (upper plate area) corresponding to the lower area of the total goods is used. In the conventional steel and plastic pallets, since the loading area cannot be changed, According to the lower area of the loaded goods, different sizes should be used.

Therefore, in the past, a large number of pallets are manufactured in expensive independent molds, so that mold costs are increased, thereby increasing the production cost of each pallet, thereby increasing the logistics cost. When producing a small amount, a problem arises that the manufacturing cost is high.

In order to solve this problem, Korean Laid-Open Patent Publication No. 2006-39152 discloses a technique related to a pallet that can vary a loading area.

1 is a view showing the structure of a variable pallet proposed in the prior Korean Patent Publication No. 2006-39152.

Referring to the drawings, the conventional variable pallet to form the coupling grooves 140 on all sides of the main pedestal 100, and selectively to the auxiliary pedestal 200, 300 formed with coupling protrusions 250, 350 on one side It can be combined.

However, there is a high risk of loss of the auxiliary support because it must be combined with a separate auxiliary support (200, 300) in order to increase the loading area, and the frequent use causes a problem that the joining protrusion is worn or broken, making it difficult to join. .

Therefore, it overcomes the unreasonable point of the conventional pallet and maintains a certain strength, while reducing the weight of the pallet, has a better corrosion resistance than steel pallets that require post-treatment for corrosion protection, and the loading area of the pallet according to the cargo loading as an integral pallet It can be easily changed, the surface of the pallet is not slippery so that the demand for a pallet that is easy to load cargo is increasing.

The present invention has been made to solve the above problems, an object of the present invention is to provide a pallet for loading cargo that can reduce the weight of the pallet while maintaining a certain strength and reduce environmental pollution due to reuse.

Another object of the present invention is to form a pallet cargo loading surface is not smooth to facilitate the cargo loading.

It is still another object of the present invention to provide a variable pallet that can easily change the loading area of the pallet according to the amount of cargo.

According to an aspect of the present invention for achieving the above object, in the pallet comprising a plurality of plates on which the load is loaded and a beam coupled to the lower portion of the plate to support the load, the pallet is made of magnesium material .

The surface of the plate and the beam is then subjected to plasma electrolyte oxidation surface treatment.

The surface of the plate is etched to form a plurality of irregularities on the surface.

And the plate and beam are self-piercing riveting joints.

The pallet includes: a body frame including a central beam, a plurality of subbeams spaced apart at regular intervals on both sides of the central beam, and a first front plate fixedly coupled to one side of the front surface of the central beam and the subbeams; A plurality of moving frames including one or more moving beams inserted into one side of the central beam or sub beam and slidingly moving on the central beam or sub beam, and a second front plate fixedly coupled to one front side of the moving beam; ; It is provided to include.

In addition, the moving beam is formed to have a larger diameter than the sub-beams inserted therein, so that the moving frame is movable in a direction orthogonal to the longitudinal direction of the central beam.

In addition, one surface of the central beam is provided with a gap holding member protruding or recessed by spring elasticity, and when the gap holding member protrudes, the moving frame is perpendicular to the longitudinal direction of the center beam. Sliding the outer side of the beam is the support member for maintaining the gap is in close contact with one side of the moving frame is maintained at a constant interval, when the support member for maintaining the interval is the movable frame is perpendicular to the longitudinal direction of the central beam The support member is protruded into the binding groove formed in the moving frame by sliding inward of the center beam in the direction, and the binding member is fixed to the binding groove to fix the moving frame.

According to the present invention as described above, by producing a pallet with a magnesium alloy material to reduce the weight of the pallet has the effect of reducing the transportation cost in freight transportation in freight transportation.

In addition, the surface of the plate on which the pallet is mounted is etched to prevent slipping on the pallet surface when loading the cargo, thereby preventing damage to the cargo.

In addition, there is no need to combine a separate part to increase the cargo loading area as an integrated pallet has an easy effect.

1 is a view showing the structure of a variable pallet proposed in the prior Korean Patent Publication No. 2006-39152.
2 is a perspective view of a magnesium pallet according to the present invention.
3 is a view showing the results of the salt spray test (KSD 9502-96 hours) of the magnesium alloy treated with plasma electrolyte oxide surface treatment.
4 is a partial perspective view showing the surface of an etched plate.
5 is a partial cross-sectional view showing a coupling relationship between the plate and the beam according to the present invention.
6 is an exploded perspective view of the magnesium pallet according to the present invention.
7a to 7c are perspective views showing a state in which the loading area of the magnesium pallet according to the present invention is changed.
8 is a view showing a state in which the movable plate is moved to protrude the gap holding support member.
9 is a partial cross-sectional view showing an operation relationship of the support member for space maintenance.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 is a perspective view of a magnesium pallet according to the present invention.

Referring to the drawings, the magnesium pallet according to the present invention includes a plurality of plates (1) on which the load is loaded and a beam (2) coupled to the lower portion of the plate (1) to support the load.

Here, the magnesium pallet according to the present invention is made of a magnesium alloy material. Magnesium material is lighter in weight and higher in strength than steel materials used in recent years, and excellent in stability due to less corrosion than steel.

[Table 1] below is a table comparing steel pallet and magnesium pallet under the same standard conditions (T11, 1100 X 1100).

Item Steel pallet Magnesium pallet material SGCC AZ31 importance 7.85㎏ / cm3 1.78 kg / cm 3 standard T11 (1100X1100) T11 (1100X1100) weight 18 kg 4 kg material cost 18㎏ * 2000 won = 36000 won 4㎏ * 8000 won = 32,000 won

The specific gravity difference between the magnesium pallet and the steel pallet is about 80%, indicating that the weight is reduced by four times or more (about 16 kg) in the same specification. As a result, it is possible to reduce the transportation cost by reducing the transportation fuel in the freight.

In addition, in order to manufacture pallets of the same standard, magnesium pallets are reduced in material cost compared to steel pallets, and steel pallets require surface treatment such as hot-dip galvanizing to prevent corrosion. It can be seen that much increased.

The beam of magnesium pallet 2 is preferably extruded in a rectangular cross section.

In addition, the magnesium pallet according to the present invention is subjected to plasma electrolytic oxidation (Plasma Electrolytic Oxidation) surface treatment.

Plasma electrolyte oxidation surface treatment is connected to the negative electrode to the electrolyte and the magnesium alloy connected to the positive electrode in the electrolyte to flow electricity to form an oxide film on the magnesium alloy surface to increase the hardness, corrosion resistance and wear resistance.

3 is a view showing the results of the salt spray test (KSD 9502-96 hours) of the magnesium alloy treated with plasma electrolyte oxidation surface, it can be seen that the rust does not occur on the magnesium alloy surface as shown in FIG. In addition, it is possible to produce a variety of colors in the magnesium alloy in accordance with the change in temperature during the surface treatment process.

4 is a partial perspective view showing the surface of the etched plate, the etching of the surface of the plate 1 by installing multiple etching plates in the mold during extrusion of the plate (1). The etched plate 1 has a number of irregularities 40 formed on the surface thereof to have a friction coefficient superior to that of the wooden pallet to prevent slippage when loading the cargo.

In addition, the strength of the plate 1 is enhanced by the unevenness 40.

5 is a partial cross-sectional view showing a coupling relationship between the plate and the beam according to the present invention. Referring to the drawings, the plate 1 and the beam 2 according to the invention are preferably self-piercing riveting (Self-Piercing Riveting) bonded.

Self-piercing riveting joining is a technique in which the rivet 30 is joined in such a way that the upper part of the material penetrates and the lower part of the material does not penetrate by using a riveting device between the same or different materials that is difficult to weld. It is not easy to weld and is suitable for coated and plated magnesium alloy surfaces, reducing the excessive electricity consumption of conventional spot welding and improving the harmful working environment due to the generation of smoke or sparks. In addition, the self-piercing riveting joint is press-bonded to the rivet 30 by using a punch on the die, and then another post-process is not necessary, so the production cycle is short, and workability is very excellent.

6 is an exploded perspective view of the magnesium pallet according to the present invention.

Referring to the drawings, the magnesium pallet according to the present invention includes a body frame 10 including a plurality of beams and plates, and a moving frame 20 in which the loading area of the pallet is variable by sliding on the body frame 10. .

The body frame 10 includes a central beam 11 having a rectangular cross section, a plurality of sub beams 12 having a rectangular cross section spaced apart at regular intervals on both sides of the central beam 11, and a central beam 11 and a sub beam. And a first front plate 13 which integrally couples the central beam 11 and the plurality of sub-beams 12 transversely from the longitudinal center of the beam 12. In this case, the fixed bond is preferably a self-piercing riveted junction. In addition, a plurality of support members 14 for space maintenance are installed on the front surface of the central beam 11 to protrude or be recessed by spring coupling. The gap maintaining support member 14 is in contact with one side surface of the moving frame 20 to maintain a predetermined gap between the moving frames 20 sliding on both sides in the longitudinal direction of the central beam 11.

The moving frame 20 includes a first moving beam 21a having a rectangular cross section in which one side of the sub beam 12 is inserted and slidingly moved on the sub beam 12, and the central beam 11 and the sub beam 12 are disposed. One side of the central beam 11 is inserted at a distance corresponding to the interval spaced apart so as to slide on the central beam 11 and the cross section opened in the direction of the central beam 11 moves in a 'c' shape. And a beam 21b and at least one second front plate 22 which integrally couples the first moving beam 21a and the second moving beam 21b laterally. In this case, the fixed bond is preferably a self-piercing riveted junction.

The moving frame 20 is preferably composed of four moving frames 20 coupled to one side and the other side of the central beam 11 on both sides of the central beam 11 on the basis of the central beam 11.

In addition, the diameter D2 of the first moving beam 21a is larger than the diameter D1 of the subbeam 12, so that the moving frame 20 is fixed in a direction perpendicular to the longitudinal direction of the central beam 11. It is possible to move by the interval (D2-D1). However, the moving interval is not limited to the difference in diameter between the first moving beam 21a and the sub-beam 12, and the cross section of the first moving beam 21a is not limited to a quadrangular shape, as in the second moving beam 21b. The cross section of the first moving beam 21a positioned on the center beam 11 side may be opened so that the first moving beam 21a may move away from the sub-beam 12 to be larger. In this case, the fixing of the first moving beam 21a may be fixed in various ways, such as forming protrusions and grooves on the inner surface of the second plate and the outer surface of the first moving beam 21a.

Hereinafter, the loading area variable structure of the magnesium pallet according to the present invention will be described in more detail.

7a to 7c are perspective views showing a state in which the loading area of the magnesium pallet according to the present invention is changed.

FIG. 7A is a perspective view illustrating a state in which the moving frames 20 positioned on both sides of the center beam 11 are in close contact with each other to minimize a loading area of magnesium pallets, and FIG. 7B illustrates that the moving frame 20 has a center beam 11. The width L1 is widened at a predetermined interval in a state in which the sliding direction of the center beam 11 is moved outward in a direction orthogonal to the lengthwise direction of FIG. 7C. The height H1 is widened in both longitudinal directions of the central beam 11 by slidingly moving on the beam 11 and the sub-beam 12.

By moving the moving frame 20 in this way it is possible to selectively adjust the loading area of the pallet according to the load capacity.

Here, in the state in which the width is widened as shown in FIG. 7B, the H-shaped gap holding member 14 maintains the gap between the moving plates located at both sides of the center beam 11.

The spacing holding member 14 will be described in detail with reference to FIGS. 8 and 9.

8 is a view showing a state in which the moving plate is moved to support the gap maintaining support member, Figure 9 is a partial cross-sectional view showing the operation relationship of the gap holding support member.

Referring to the drawings, at least one support member 14 for maintaining the H-shape is formed on the front surface of the central beam (11). The central beam 11 is formed with a groove 16 having a shape corresponding to the shape of the gap maintaining support member 14, and a spring 15 is disposed between the gap maintaining support member 14 and the center beam 11. The interposition maintaining member 14 protrudes or recesses toward the front of the center beam 11.

As for the magnesium pallet, the moving frame 20 located on the left and right sides of the center beam 11 is in close contact with each other, so that the loading area of the pallet is the smallest. At this time, on the inner surface of the moving frame 20 located on the left and right sides of the center beam 11, the support member 14 for maintaining the gap protrudes to form a binding groove 23 to which the moving frame 20 is bound. The holding support member 14 is fixed to the binding groove 23 so that the moving frame 20 is stopped.

In addition, when the movable frame 20 is pulled by applying an external force to the movable frame 20 to the outside of the central beam 11 in a direction orthogonal to the longitudinal direction of the central beam 11 to widen the loading area, the movable frame 20 slides. The gap maintaining support member 14 is moved away from the binding groove 23 while being moved. In addition, the moving frame 20 is moved by the difference in diameter between the sub-beam 12 and the first moving beam 21a, and the support member 14 for maintaining the gap protrudes from one side of the moving frame 20 located at both sides. In close contact with the center frame 11, the moving frame 20 is fixed so as not to move.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it is possible to make various modifications and variations without departing from the spirit and scope of the invention. Accordingly, the scope of the appended claims should include all such modifications and changes as fall within the scope of the present invention.

1: plate 2: beam
10 body frame 11: center beam
12 subbeam 13 first front plate
14: support member for space maintenance 15: spring
16: home 20: moving frame
21: moving beam 21a; First moving beam
21b; Second moving beam 22: second front plate
23: binding groove 30: rivet
40: unevenness

Claims (7)

In the pallet comprising a plurality of plates on which the load is loaded and a beam coupled to the lower portion of the plate to support the load,
Magnesium pallet, characterized in that the pallet is made of a magnesium material.
The method of claim 1,
Magnesium pallets, characterized in that the surface of the plate and the beam is plasma-oxidized surface treatment.
The method of claim 1,
Magnesium pallet, characterized in that the surface of the plate is etched, a plurality of irregularities are formed on the surface.
The method of claim 1,
And said plate and beam are self-piercing riveted joints.
The method of claim 1,
The pallet is
A body frame including a central beam, a plurality of subbeams spaced apart at predetermined intervals on both sides of the central beam, and a first front plate fixedly coupled to one side of the front surface of the central beam and the subbeams;
A plurality of moving frames including one or more moving beams inserted into one side of the central beam or sub beam and slidingly moving on the central beam or sub beam, and a second front plate fixedly coupled to one front side of the moving beam; ; Magnesium pallets, characterized in that it comprises.
The method of claim 5, wherein
The movable pallet has a larger diameter than the sub-beams inserted therein, so that the movable frame is movable in the direction orthogonal to the longitudinal direction of the central beam.
The method according to claim 6,
On one surface of the central beam is formed a support member for spacing to protrude or recess by spring elasticity,
When the gap maintaining support member protrudes, the movable frame is slidably moved outwardly of the center beam in a direction orthogonal to the longitudinal direction of the central beam such that the gap maintaining support member is in close contact with one side of the movable frame. Interval is maintained,
When the gap holding member is recessed, the movable frame is slidably moved inward of the central beam in a direction orthogonal to the longitudinal direction of the central beam such that the supporting member protrudes into a binding groove formed on the inner side of the movable frame. Magnesium pallet is fixed to the binding groove characterized in that the moving frame is fixed.

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