Lightweight logistics tray

Abstract

The utility model discloses a lightweight logistics tray which comprises a tray body. The tray body comprises a bearing layer, a supporting layer and a bottom layer which are arranged in sequence; the supporting layer is composed of nine supporting columns arranged at intervals, and therefore a #-shaped forklift channel is formed between the bearing layer and the bottom layer. The interior of the supporting column is in a hollow shape. The bearing layer comprises a hollow bearing plate and an upper connecting beam; the upper connecting beam is arranged between the upper ends of the two adjacent supporting columns; the bottom layer comprises lower connecting beams arranged between the lower ends of every two adjacent supporting columns, and the lower connecting beams located on the peripheral edges are hollowed out. And reinforcing ribs are arranged on the upper connecting beam, the bearing plate and the lower connecting beam. According to the tray, the tray body is formed through injection molding by adopting a physical foaming technology, and the whole tray body adopts a hollow design and is provided with the reinforcing ribs, so that the use amount of raw materials can be saved and the material cost can be reduced on the premise that the tray has higher bearing capacity.

Description

Technical Field

[0001] This utility model relates to the field of logistics pallet technology, specifically to a lightweight logistics pallet. Background Technology

[0002] With the development of digital intelligence and shared transportation units in my country's logistics and transportation industry, the market for logistics vehicles—the basic unit of logistics transportation—is expanding rapidly. Logistics pallets are categorized into plastic pallets, wooden pallets, and steel structure pallets. In recent years, plastic pallets have gradually replaced traditional wooden and steel structure pallets due to their advantages such as light weight and environmental recyclability. However, compared to steel and wooden pallets, plastic pallets have lower load-bearing capacity and are more prone to damage from impacts, such as edge deformation. Traditional plastic pallets, in order to increase load-bearing capacity, are designed with thicker walls and multiple widened reinforcing ribs. This increases the amount of plastic material used, leading to higher raw material consumption as the load increases, significantly increasing raw material costs. Furthermore, uneven pallet wall thickness results in noticeable shrinkage and an uneven appearance. Therefore, how to reduce raw material consumption while ensuring high load-bearing capacity has become a major challenge for logistics vehicle development suppliers. Utility Model Content

[0003] To address the problems of uneven appearance and high raw material costs associated with existing logistics pallets, this invention provides a lightweight logistics pallet. The lightweight logistics pallet of this invention comprises a pallet body with an overall hollow design and reinforcing ribs. This significantly reduces the overall weight of the logistics pallet without compromising its load-bearing capacity, achieving lightweighting and saving material costs. It also facilitates air circulation under the goods, achieving waterproofing and moisture protection. Furthermore, a specific forklift passage is formed inside the pallet body for easy forklift transport. In addition, the pallet body of this invention is injection molded using a physical foaming process, resulting in a microporous structure inside the pallet body. This eliminates the effects of wall thickness shrinkage, improves warping deformation, enhances the surface flatness and visual appeal of the logistics pallet, and reduces the internal material density, thus saving raw materials.

[0004] The technical solution of this application is as follows:

[0005] A lightweight logistics pallet includes a pallet body; the pallet body includes a load-bearing layer, a support layer, and a bottom layer arranged sequentially; the support layer consists of nine spaced-apart support columns, forming a grid-shaped forklift aisle between the load-bearing layer and the bottom layer, so that each side of the logistics pallet has two slots for forklift arm insertion; the interior of the support columns is hollowed out; the load-bearing layer includes a hollowed-out load-bearing plate and an upper connecting beam; the upper connecting beam is located between the upper ends of two adjacent support columns; the bottom layer includes a lower connecting beam located between the lower ends of two adjacent support columns, and the lower connecting beams located at the four edges are hollowed out; the upper connecting beam, the load-bearing plate, and the lower connecting beam are all provided with reinforcing ribs.

[0006] Compared with the prior art, the lightweight logistics pallet of this utility model has the following advantages: (1) The pallet body adopts a hollow structure and is equipped with reinforcing ribs, so as to significantly reduce the overall weight of the logistics pallet without reducing the load-bearing capacity of the logistics pallet, achieving the purpose of lightweighting, saving material costs, and also facilitating the air circulation at the bottom of the goods, achieving the purpose of waterproofing and moisture-proofing; (2) The pallet body adopts a specific structural design, forming a grid-shaped forklift channel inside, so that each side of the logistics pallet has a slot for the forklift arm to be inserted, making it easy for the forklift to insert the logistics pallet from different directions, and the use is highly flexible; (3) The bottom layer of the pallet body, the lower connecting beam in the middle area is designed as a densely distributed structure without hollowing out, so that the force of the pallet body can be concentrated in the middle area, which is conducive to controlling the force effect of the entire logistics pallet.

[0007] As an optimization, in the aforementioned lightweight logistics pallet, adjacent reinforcing ribs are transitioned by a rounded arc. This prevents the force from concentrating at sharp corners or edges, thus avoiding irreversible bending deformation due to localized overload. Furthermore, when the logistics pallet is used in different environments, fine particles such as dust and dirt will fall onto its surface; these particles are easier to clean at the rounded corners compared to sharp corners. Further, the reinforcing ribs are trapezoidal in shape, wider at the bottom than the top. This improves the load-bearing capacity and stability of the pallet body, and also reduces surface defects caused by trapped air during the pallet body injection molding process.

[0008] As an optimization, in the aforementioned lightweight logistics pallet, the lower connecting beam includes a lower crossbeam and a lower longitudinal beam located at the edge, and a lower middle beam located in the middle; the lower crossbeam has a circular hollow portion, and the lower longitudinal beam has a square hollow portion.

[0009] As an optimization, the aforementioned lightweight logistics pallet has mounting holes at the top of the support columns at the four corners, as well as at the bottom of the load-bearing plate and the lower crossbeam; anti-slip pads are installed inside the mounting holes. The anti-slip pads increase the friction between the pallet body and the goods or forklift arms, improving the anti-slip performance of the logistics pallet and ensuring high safety during use.

[0010] Furthermore, a set of limiting protrusions are evenly spaced circumferentially on the inner wall of the mounting hole, and these limiting protrusions are interference-fitted with the anti-slip pad. This helps to improve the connection strength between the anti-slip pad and the tray body. Furthermore, the top of each limiting protrusion has a guide slope. The guide slope acts as a guide when the anti-slip pad is inserted, helping to align the anti-slip pad with the mounting hole, making the installation process smoother and improving installation efficiency.

[0011] As an optimization, the aforementioned lightweight logistics pallet has a positioning slot on the support column located in the middle for placing an electromagnetic induction chip. This enables the logistics pallet of this application to have real-time location tracking capabilities; users can use electromagnetic induction signals to comprehensively grasp the specific location of the logistics pallet, thereby achieving precise management and control of the logistics process. This not only improves the transparency and traceability of logistics operations but also helps optimize logistics routes and reduce unnecessary transportation costs and time.

[0012] As an optimization, the aforementioned lightweight logistics pallet features a set of anti-collision ridges spaced apart on the outer surface of the support columns at the four corners. These anti-collision ridges enhance the pallet's impact and drop resistance, reducing the likelihood of damage and thus ensuring its lifespan.

[0013] As an optimization, in the aforementioned lightweight logistics pallet, the pallet body is injection molded from a foamed material, such as polystyrene foam, polypropylene foam, polyethylene foam, etc. Therefore, after the pallet body is injection molded, it has a microporous structure inside, which helps to reduce the internal material density of the product, achieving the goal of saving raw materials. Furthermore, it can eliminate the effects of cooling shrinkage caused by uneven wall thickness, reduce shrinkage marks on the product surface, thereby improving product warping and deformation, and enhancing the surface flatness and visual appeal of the logistics pallet. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of the lightweight logistics pallet in the embodiments of this application;

[0015] Figure 2 yes Figure 1 A schematic diagram of the bottom structure of a logistics pallet;

[0016] Figure 3 yes Figure 1The main view of the logistics pallet in the image;

[0017] Figure 4 yes Figure 3 BB-direction sectional view in the middle;

[0018] Figure 5 yes Figure 3 CC-direction section view;

[0019] Figure 6 yes Figure 1 An enlarged schematic diagram of part A in the diagram;

[0020] Figure 7 yes Figure 3 DD section view in the middle;

[0021] Figure 8 This is a schematic diagram of the mounting hole structure in an embodiment of this application.

[0022] The markings in the attached diagram are as follows: 1-Pallet body, 11-Support column, 111-Anti-collision rib, 12-Bearing plate, 13-Upper connecting beam, 131-Upper crossbeam, 132-Upper longitudinal beam, 133-Upper middle beam, 14-Lower connecting beam, 141-Lower crossbeam, 1411-Circular hollow part, 142-Lower longitudinal beam, 1421-Square hollow part, 143-Lower middle beam, 15-Reinforcing rib, 16-Limiting protrusion, 161-Guide slope, 101-Slot, 102-Arch, 103-Mounting hole, 104-Positioning groove; 2-Anti-slip pad. Detailed Implementation

[0023] The present application will be further described below with reference to the accompanying drawings and embodiments. The described embodiments are exemplary and intended to illustrate the present invention, but are not intended to limit the present application.

[0024] See Figures 1 to 3 The lightweight logistics pallet in this embodiment includes a pallet body 1; the pallet body 1 includes a load-bearing layer, a support layer, and a bottom layer; the support layer is composed of nine spaced support columns 11, thereby forming a "well"-shaped forklift passage between the load-bearing layer and the bottom layer, so that each side of the logistics pallet has two slots 101 for forklift arms to insert into; the interior of the support columns 11 is hollow; the load-bearing layer includes a hollowed-out load-bearing plate 12 and an upper connecting beam 13; the upper connecting beam 13 is located between the upper ends of two adjacent support columns 11; there are four load-bearing plates 12, and the edges of the load-bearing plates 12 are connected to the upper connecting beams 13; the bottom layer is "field"-shaped, and includes a lower connecting beam 14 located between the lower ends of two adjacent support columns 11, and the lower connecting beams 14 located at the four edges are hollowed out; the upper connecting beam 13, the load-bearing plate 12, and the lower connecting beam 14 are all provided with reinforcing ribs 15.

[0025] In this embodiment, adjacent reinforcing ribs 15 are transitioned by a rounded arc 102. This prevents irreversible bending deformation caused by concentrated force at sharp corners or edges when the logistics pallet is subjected to significant load. Furthermore, when the logistics pallet is used in different environments, fine particles such as dust and dirt will fall onto its surface; these particles are easier to clean at the rounded corners compared to sharp corners. Further, the reinforcing rib 15 is trapezoidal in shape, with a smaller top and a larger bottom (the bottom end is the one connected to the bearing plate 12, upper connecting beam 13, and lower connecting beam 14). This improves the load-bearing capacity and stability of the pallet body 1, and also reduces surface defects caused by trapped air during the injection molding of the pallet body 1. Specifically, the smaller end of the reinforcing rib 15 is 5mm, and the larger end is 5.5mm (see...). Figure 7 ).

[0026] See Figure 4 In this embodiment, the lower connecting beam 14 includes four lower horizontal beams 141 and four lower vertical beams 142 located at the edges, and four lower intermediate beams 143 located in the middle (where the two longitudinally arranged intermediate beams are composed of three narrow beams spaced apart). The lower horizontal beams 141 have circular cutouts 1411, and the lower vertical beams 142 have square cutouts 1421. The area of ​​the circular cutouts 1411 is smaller than the area of ​​the square cutouts 1421. By setting specific cutout shapes, the amount of raw materials used in the product can be reduced as much as possible without affecting the load-bearing capacity of the logistics pallet, thus lowering production costs. Reinforcing ribs 15 are provided on the lower surface of the lower connecting beam 14.

[0027] See Figure 5 In this embodiment, the upper connecting beam 13 includes four upper horizontal beams 131 and four upper vertical beams 132 located at the edge (with reinforcing ribs 15 provided on the upper surfaces of the upper horizontal beams 131 and upper vertical beams 132), and four upper intermediate beams 133 located in the middle (where the two upper intermediate beams 133 arranged longitudinally are composed of two narrow beams spaced apart, and with reinforcing ribs 15 provided on the lower surfaces of these two upper intermediate beams 133; and with reinforcing ribs 15 provided on the upper surfaces of the other two upper intermediate beams 133); and with reinforcing ribs 15 provided on the lower surface of the bearing plate 12.

[0028] In this embodiment, mounting holes 103 are provided at the top of the support columns 11 located at the four corners, and at the bottom of the bearing plate 12 and the lower crossbeam 141. Anti-slip pads 2 are installed within the mounting holes 103, with the top of the anti-slip pads 2 protruding above the surface of the pallet body 1. During use, the anti-slip pads 2 at the top of the support columns 11 contact the goods, the anti-slip pads 2 at the bottom of the bearing plate 12 contact the forklift arm, and the anti-slip pads 2 at the bottom of the lower crossbeam 141 contact the ground or shelf. The design of the anti-slip pads 2 increases the friction between the pallet body 1 and the goods or forklift arm, improving the anti-slip performance of the logistics pallet and ensuring high safety. The anti-slip pads 2 are integrally molded from elastic, soft plastic; during installation, simply tap them gently with a rubber mallet to press the anti-slip pads 2 into the mounting holes 103, making the operation simple and easy to implement.

[0029] See Figure 8 In this embodiment, a set of limiting protrusions 16 are evenly spaced along the circumference on the inner wall of the mounting hole 103. The limiting protrusions 16 are interference-fitted with the anti-slip pad 2. This helps to improve the connection strength between the anti-slip pad 2 and the tray body 1. Furthermore, the top of the limiting protrusion 16 has a guide slope 161. The guide slope 161 plays a guiding role when the anti-slip pad 2 is inserted, which can help the anti-slip pad 2 align with the mounting hole 103, making the installation process smoother and improving installation efficiency.

[0030] See Figure 6 In this embodiment, a positioning groove 104 is provided on the support column 11 located in the middle position for placing an electromagnetic induction chip. This enables the logistics pallet of this application to have real-time location tracking capabilities; users can use electromagnetic induction signals to comprehensively grasp the specific location of the logistics pallet, thereby achieving precise management and control of the logistics process. This not only improves the transparency and traceability of logistics operations but also helps optimize logistics routes and reduce unnecessary transportation costs and time.

[0031] In this embodiment, three anti-collision ribs 111 are spaced apart on the outer surface of the support columns 11 at the four corners. The anti-collision ribs 111 help improve the impact and drop resistance of the logistics pallet, reduce the probability of damage, and thus ensure the service life of the logistics pallet.

[0032] In this embodiment, the tray body 1 is injection molded using physical foaming technology. During injection molding, the flowing hot melt plastic and supercritical fluid (N2 or CO2) enter the tray mold core and cavity through the injection molding machine nozzle, with gas nuclei distributed in the middle layer of the product. After thermal expansion, micro-cell structures are generated and distributed in the middle area of ​​the product. When the micropores are distributed in thicker rib areas or areas where ribs intersect, the filling density of the plastic in that area is appropriately reduced, thereby eliminating the cooling shrinkage effect caused by uneven wall thickness and reducing shrinkage marks on the product surface. The reduction of shrinkage marks on the product surface can alleviate the tray warping deformation caused by uneven shrinkage in traditional injection molded trays. In addition, these micro-cell structures can also reduce the clamping force and injection pressure of the injection molding machine during product injection molding, which is beneficial to improving the stability of product injection molding compared with traditional injection molding.

Claims

1. A lightweight logistics pallet, characterized in that: The pallet includes a pallet body (1); the pallet body (1) includes a load-bearing layer, a support layer and a bottom layer; the support layer is composed of nine spaced support columns (11), thereby forming a "well" shaped forklift passage between the load-bearing layer and the bottom layer, so that each side of the logistics pallet has two slots (101) for forklift arms to be inserted; the interior of the support column (11) is hollow; the load-bearing layer includes a hollowed-out load-bearing plate (12) and an upper connecting beam (13); the upper connecting beam (13) is located between the upper ends of two adjacent support columns (11); the bottom layer includes a lower connecting beam (14) located between the lower ends of two adjacent support columns (11), and the lower connecting beam (14) located at the four edges is hollowed out; the upper connecting beam (13), the load-bearing plate (12) and the lower connecting beam (14) are all provided with reinforcing ribs (15).

2. The lightweight logistics pallet according to claim 1, characterized in that: The two adjacent reinforcing ribs (15) are connected by a circular arc (102).

3. The lightweight logistics pallet according to claim 2, characterized in that: The reinforcing rib (15) is trapezoidal in shape, with a smaller top and a larger bottom.

4. The lightweight logistics pallet according to claim 1, characterized in that: The lower connecting beam (14) includes a lower horizontal beam (141) and a lower vertical beam (142) located at the edge, and a lower middle beam (143) located in the middle; the lower horizontal beam (141) is provided with a circular hollow part (1411), and the lower vertical beam (142) is provided with a square hollow part (1421).

5. The lightweight logistics pallet according to claim 4, characterized in that: Mounting holes (103) are provided at the top of the support columns (11) located at the four corners, as well as at the bottom of the bearing plate (12) and the lower crossbeam (141); anti-slip pads (2) are provided in the mounting holes (103).

6. The lightweight logistics pallet according to claim 5, characterized in that: The inner wall of the mounting hole (103) is provided with a set of limiting protrusions (16) evenly spaced along the circumference, and the limiting protrusions (16) are interference fit with the anti-slip pad (2).

7. The lightweight logistics pallet according to claim 6, characterized in that: The top of the limiting protrusion (16) has a guide slope (161).

8. The lightweight logistics pallet according to any one of claims 1 to 7, characterized in that: The support column (11) located in the middle position is provided with a positioning groove (104) for placing the electromagnetic induction chip.

9. The lightweight logistics pallet according to any one of claims 1 to 7, characterized in that: A set of anti-collision ribs (111) are provided at intervals on the outer surface of the support columns (11) located at the four corners.

10. The lightweight logistics pallet according to any one of claims 1 to 7, characterized in that: The tray body (1) is injection molded from foam material.

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