KR20030036386A - Leg part coupling device of steel pallet - Google Patents

Abstract

PURPOSE: A leg part coupling device of a steel pallet is provided to make the structure firm and light-weight, make the use easier and prevent the slippage of loads. CONSTITUTION: A leg part(20) is coupled to the bottom portion of a top plate made of steel by penetrating holes perforated on the top plate. The leg part(20) is mostly formed in an infundibular shape. A coupling ring having a plurality of flanges radially formed is mounted on the outer periphery of the upper portion of the leg part(20). After the leg part(20) and the coupling ring pass through the holes of the top plate, the flanges are radially spreaded to thereby stably fasten the leg part(20) to the top plate.

Description

Leg joints of steel pallets {omitted}

The present invention relates to a pallet which is essentially used to easily or quickly and accurately handle transportation and storage of goods or products in an industrial site or a distribution industry. In order to achieve the intended purpose, the weight of the pallet is reduced to reduce logistics costs, and the strength is reduced. There is a need for improvement in the ability to mass-automate with improvements in assembly costs and parts reduction while improving the object of the present invention.

Therefore, in order to minimize the weight while utilizing the advantages of using a round iron plate, that is, the upper part of the pallet and the leg part are simply manufactured by molding by forming a mold while minimizing the weight and minimizing the durability while increasing the cross-sectional secondary moment and cross-sectional coefficient. By combining, the main advantage is to produce a simple and durable steel pallet utilizing the strengths of the steel.

Until now, pallets for transporting and storing goods have generally consisted of squeezing wood with a certain thickness or width into a lattice form and fastening fixtures such as nails at their intersections. There is a problem of short lifespan, especially when used as a stockpile of outdoor goods such as brick or stone, the pallet is exposed to moisture or moisture, and in such a case, the moisture is soaked in the wood and the wood is deformed. Are corroded and moldy, causing bad odors and damage to the loads stored on top. Also, raw materials are mostly dependent on imports, which causes problems such as foreign currency waste, resource waste and environmental pollution. Synthetic resin (plastic) material to reinforce the weakness of wood and corrosion The produced pallet is utilized.

However, pallets made of synthetic resins have mass production and strength reinforcement, which extends the service life compared to conventional wood pallets, but has a drawback of being very heavy as an integral injection molding method. Therefore, it lowers the loading efficiency and causes the logistics cost to increase greatly, and causes environmental problems such as not being recycled.

Recently, in order to compensate for this problem, conventional steel pallets have been produced, but the number of parts has increased, making it difficult to increase production costs and automate mass production. The assembled piece bolts are easily relaxed by vibrating loads when used for a long time. Inconvenience in use and short-lived shortcomings have emerged, and since the entire pallet has been integrally manufactured up to the leg part, however, various difficulties such as excessive input of equipment costs have appeared, which is why weight, cost, In use, there were many problems.

As an improved invention, the present inventor has applied for a number of patents, and in particular, a reinforcing hole is formed in the upper plate, and a leg member is coupled to the lower plate.

However, in the above invention, in joining the leg member to the top plate, there was a tendency that the simplicity and efficiency are lowered by welding or screwing, and an improvement thereof is required.

In order to solve the above problems, the present invention achieves rigidity and light weight while maintaining the shape of the pallet by assembling the upper steel plate and the lower leg of the steel pallet by a simple indentation into a round iron plate, and is easy to use and loads. It is possible to stack the legs by stacking the empty pallets by applying the legs and to produce steel pallets that do not require protection when used as export pallets. It is the purpose of the invention to make the post-treatment simple by producing the pallet, thereby reducing the production cost and enhancing the competitiveness of related industries so that it can be used in general logistics.

1 is a perspective view of an iron pallet of the present invention.

2 is a coupling diagram of the coupling ring and the finger piece.

3 is an embodiment in which the coupling ring is inserted into the leg portion.

4 is an embodiment according to the coupling ring is inserted into the leg portion.

5 is a detailed view of a snap ring used in the present invention.

Figure 6 is an embodiment formed with projections on the leg portion.

<Explanation of symbols for the main parts of the drawings>

10: top plate 20: leg area

30: hole 40: bullet

50: coupling ring 60: snap ring

70: protrusion

The present invention relates to a leg connection device of the steel pallet. Steel pallet of the present invention is composed of a top plate and a leg portion, the top plate is formed with a plurality of reinforcement rib holes in a grid shape, the reinforcement rib hole is formed around the periphery of the hole is formed, the outer periphery of the reinforcement rib hole The reinforcement ribs are formed at a predetermined height in proximity to the center of the hole, and the reinforcement ribs are formed at a predetermined height, and between the reinforcement rib holes, that is, on the center of each of the four reinforcement ribs, the auxiliary rib holes are formed, respectively. Auxiliary teeth are formed at a predetermined position in close proximity to each other, and the embossing is formed at an arbitrary position of the upper plate to prevent slippage and to insert a manufacturer's mark, an Internet address, and the like. In the steel pallet where the legs are joined to the site, the legs are generally empty inside It is in the shape of a time, and the same cross-sectional shape as the portion extending to the lower portion of the reinforcing force hole, the upper plate of the steel, the lower portion of the upper plate is coupled to the leg portion, the upper plate is perforated hole, the leg portion penetrates the hole Coupled with the upper plate, the leg portion is generally funnel-shaped, the upper outer circumference is equipped with a plurality of coupling rings formed radially, the leg portion and the coupling ring passes through the hole of the upper plate, the tangy piece radially By unfolding, the leg portion relates to the leg portion connecting device of the iron pallet, characterized in that the top plate is stably fixed.

In addition, the coupling ring of the present invention is welded to the outer circumference of the leg portion. In another embodiment, the outer circumference of the leg portion is formed along the outer circumference, the inner ring of the coupling ring snap ring settled groove is formed to be equivalent to the concave groove, the snap ring is placed in the snap ring settled groove, When inserting the engaging ring formed on the outside of the elastic piece to the leg portion, the coupling portion of the iron pallet is characterized in that the coupling ring is firmly fastened to the leg portion by a snap ring.

In particular, the plurality of tangy pieces can be directly coupled to the contact portion between the outer periphery of the leg portion and the hole of the upper plate without using a coupling ring formed radially.

In addition, the present invention is the upper plate of the iron, and the lower portion of the upper plate is coupled to the leg, the upper plate is perforated, the leg portion is coupled to the upper plate through the hole, the leg portion is generally funnel shape, A protruding portion is formed on the upper outer circumference thereof, and after the leg portion passes through the hole of the upper plate, the protruding portion is supported by the lower portion of the hole, whereby the leg portion can be configured to be stably fixed to the upper plate.

The present invention is described in detail by the accompanying drawings as follows.

1 is a perspective view of the steel pallet of the present invention, Figure 2 is a coupling diagram of the coupling ring and the tangy piece, Figure 3 is an embodiment of the coupling ring is inserted into the leg portion, Figure 4 is a coupling ring is inserted into the leg portion FIG. 5 is a detailed view of a snap ring used in the present invention, and FIG. 6 is an embodiment in which protrusions are formed on leg portions.

In order to produce the upper plate of the illustrated pallet, the raw materials are cut into squares by a shearing machine by inserting sheets or coils in a predetermined width and length according to the press development. In the position where the and legs overlap each other, they are pierced in different sizes, notched to fold both ends horizontally and vertically, and then moved back to the press for manufacturing the transfer plate or manually. By molding and moving again, the finishing press presses the finishing pallet, which can be molded like the end of the input pallet and can be selectively molded by embossing or company marks. By sequential mold using plate of size And is joined to the top plate.

In other words, in order to bend the raw material close to the product width based on the manufacturing flow chart above, the fabrication of the notch is manufactured by the mold and reinforced in order to bend the reinforcing strength hole and the auxiliary strength hole into the perforated and pallet end shapes. It is manufactured by the secondary press equipped with a mold for manufacturing the upper plate, which works such as strength, auxiliary strength, and embossing. And the leg part is manufactured by sequential mold in order to make a cylinder or cone shape. In addition, to hide the sharp part of the end part to bend the pallet end shape during the piercing operation, giving a notch to bend the pallet end shape without difficulty to protect the object from the outside from the sharp part of the pallet outside do. In order to prevent damage to the load when the pallet is overlapped, make a supplementary leg plate with leg position holes on the complementary leg plate which is located at regular intervals, and place the leg part at the position of the hole by placing it long on the overlapping partial load. To protect the load. Therefore, the manufacturing process as described above is reduced labor and it is possible to produce a safe steel pallet.

In detail describing the present invention in the iron pallet, the pallet is composed of the upper plate and the leg portion, the coupling relationship is the leg portion is coupled to the lower portion of the upper plate, the upper plate is perforated hole, the leg portion is a hole It is coupled to the upper plate through the, and the leg portion is generally funnel-shaped, the upper outer circumference is equipped with a coupling ring formed with a plurality of carbon parts radially, the leg portion and the coupling ring passes through the hole of the upper plate, By spreading the radially, the leg is connected to the leg of the iron pallet, characterized in that the leg is stably fixed to the top plate. When the upper end of the leg is wide and the lower part is inserted into the hole of the upper plate, the wide part of the upper part does not protrude beyond a certain length over the hole.

On the other hand, in order to prevent the leg portion from rising back to the upper side, the present invention utilizes the elasticity of the iron plate, and first, the coupling ring is attached to the upper predetermined point of the leg portion. The linkage is formed with a plurality of fingering pieces. The connecting ring and the tangy piece can be produced by cutting it in one process by pressing. The coupling ring is welded to the outer circumference of the leg portion.

Alternatively, a concave groove is formed along the outer circumference of the leg portion, and a snap ring settled groove is formed on the inner surface of the coupling ring to be equivalent to the concave groove, so that a snap ring is placed in the snap ring settled groove, When the elastic piece is inserted into the coupling ring formed on the outside, the coupling ring is firmly fastened to the leg portion by a snap ring. The snap ring is a part of the torus is broken bar because it is elastic. Press to push in, and withdraw the force again.

In this manner, the coupling ring is mounted on the leg portion, and when the leg portion on which the coupling ring is mounted is first inserted into the hole of the upper plate from the top to the bottom, the coupling ring also passes through the hole. The fingertips formed in the coupling ring are folded in the upward direction, and after passing through the holes, are expanded radially again.

Here, the leg portion may be generally funnel-shaped or cylindrical, and a flange may be formed on an upper surface of the leg portion to support the leg portion with the flange. In addition, the hole portion may be formed such that the hole portion partially extends downwardly into the cylindrical shape by deep drawing, and inserts and binds the leg portion to the extension portion thus manufactured, and also the leg portion in the same manner as described above. It is inserted and fixed to the outside of the extension, the fixing means can be applied in the same manner as described above.

The invention is provided with reinforcement tendency holes, auxiliary tendency holes, etc., which serve to increase the strength (section modulus) with the iron plate, and can be manufactured with a steel pallet by a simple assembly, so that the legs and the body can be made relatively strong. In addition, since the combination of the upper part of the pallet and the leg member is simply combined by press-fitting without welding or the like, it becomes simpler and overlapping with the conventional pallet, thereby reducing the space occupied when storing the empty pallet.

Claims (5)

Steel plate 10 and the lower portion of the upper plate 10 is coupled to the leg portion 20, the upper plate 10 is drilled in the hole 30, the leg portion 20 to the hole 30 Is coupled to the upper plate 10 through, the leg portion 20 is a funnel shape, the upper outer circumference is equipped with a coupling ring 50 formed with a plurality of tungsten pieces 40 radially, the leg portion ( 20 and the coupling ring 50 after passing through the hole of the upper plate 10, by spreading the radial piece 40 radially, characterized in that the leg portion 20 is stably fixed to the upper plate 10 Connecting device of leg of steel pallet. The method of claim 1, wherein the coupling ring 50 is connected to the leg portion of the steel pallet, characterized in that coupled to the outer circumference of the leg portion 20 by welding. According to claim 1, wherein the outer periphery of the leg portion 20 is formed along the outer periphery, the inner ring of the coupling ring 50 is formed with a snap ring settled groove is equivalent to the concave groove, the snap ring (60) ) Is settled in the snap ring settled groove, when the coupling ring 50 is formed in the leg portion 20, the elastic piece 40 is formed outside, the coupling ring 50 by the snap ring 60 Leg portion connecting device of the iron pallet, characterized in that is firmly fastened to the leg portion (20). According to claim 1, wherein the plurality of the fingertips (40) do not use a coupling ring 50 formed radially, the contact between the outer circumference of the leg portion 20 and the hole 30 of the upper plate 10 Connection device for the legs of the steel pallet, characterized in that the direct coupling by welding. Steel plate 10 and the lower portion of the upper plate 10 is coupled to the leg portion 20, the upper plate 10 is drilled in the hole 30, the leg portion 20 to the hole 30 Is coupled to the upper plate 10, the leg portion 20 is a funnel shape, the upper periphery is formed with a projection 70, the leg portion 20 through the hole of the upper plate 10 Afterwards, the projection part 70 is supported by the lower portion of the hole, the leg portion 20 is connected to the leg portion of the steel pallet, characterized in that the upper plate 10 is stably fixed.