A two-layer superimposed structure of wood pallet
By using a double-layered overlapping wooden pallet with support columns and positioning grooves, bolt and nut design, anti-slip layer and cushioning pad, the problems of insufficient structural stability, anti-slip, handling convenience and cushioning performance of wooden pallets are solved, achieving efficient and stable cargo transportation and convenient maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Filing Date
- 2025-09-12
- Publication Date
- 2026-07-14
AI Technical Summary
Existing wooden pallets have poor structural stability, lack anti-slip design, are inconvenient to handle, are difficult to pick up with forks, have insufficient cushioning performance, are difficult to repair, and take up a lot of space.
It adopts a two-layer overlapping structure, with the support column connected to the positioning groove, and the bolt and nut are detachable. The support column has internal reinforcing ribs, anti-slip layer, buffer pad and forklift fork hole design, combined with U-shaped handle and limit block.
It improves the structural stability and load-bearing capacity of pallets, prevents goods from slipping, increases handling efficiency, reduces wear and tear, lowers maintenance costs, and saves storage space.
Smart Images
Figure CN224491891U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wooden pallet technology, and in particular to a wooden pallet with a two-layer overlapping structure. Background Technology
[0002] In the logistics and warehousing sector, wooden pallets serve as crucial tools for cargo carrying and transshipment. Their structural stability, load-bearing capacity, and ease of use directly impact transportation efficiency and cargo safety. Existing wooden pallets suffer from several shortcomings: First, traditional wooden pallets are mostly single-layer structures or simply spliced double-layer structures, with fixed splicing or simple supports connecting the upper and lower layers. This results in poor structural stability, making them prone to loosening, deformation, and even cargo tipping under long-term loads. Second, they lack effective anti-slip designs, allowing goods to slip and be damaged during transshipment or stacking due to vibration or tilting. Third, they lack ease of handling; most wooden pallets do not have dedicated handles, making manual handling laborious and increasing the risk of hand injuries. Fourth, they lack precise positioning structures for forklifts, allowing fork tines to easily deviate and impact the pallet body, causing damage and affecting forklift efficiency. Fifth, they lack cushioning performance; during bumpy transport, the hard contact between goods and the pallet easily causes wear and tear. Sixth, their overall structure is mostly one-piece, making partial repairs difficult and requiring complete replacement, increasing usage costs. Furthermore, they occupy significant space when not in use, hindering storage. Utility Model Content
[0003] In order to overcome the shortcomings of the existing technology, one of the objectives of this utility model is to provide a wooden pallet with a two-layer overlapping structure.
[0004] One of the objectives of this utility model is achieved through the following technical solution:
[0005] A two-layer overlapping wooden pallet includes an upper plate and a lower plate. Support columns are vertically fixed to the four corners of the bottom surface of the upper plate, and positioning grooves are formed at the four corners of the top surface of the lower plate corresponding to the positions of the support columns. The bottom ends of the support columns are embedded in the positioning grooves. The upper plate and the lower plate are detachably connected by at least two sets of connectors. The connectors include bolts that pass through the upper plate and the support columns and nuts that cooperate with the bolts.
[0006] As a further improvement to the above technical solution:
[0007] The support column is a hollow tubular structure with reinforcing ribs fixedly connected to it along the axial direction. The reinforcing ribs are distributed in a cross shape.
[0008] An anti-slip layer is fixedly connected to the top edge of the upper plate. The anti-slip layer is made of rubber and has anti-slip textures evenly distributed on its surface.
[0009] The bottom of the lower plate is fixedly connected to four corners with cushioning pads, which are elastic rubber pads with ventilation holes on their bottom surface.
[0010] The upper plate has handles symmetrically arranged on both sides of its top surface. The handles are U-shaped and their ends are fixedly connected to the upper plate by reinforcing strips.
[0011] A reinforcing plate is fixedly connected to the bottom edge of the lower plate, and a forklift fork hole is formed between the reinforcing plate and the lower plate. A limit block is fixedly connected to the inner wall of the forklift fork hole.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0013] 1. Strong structural stability and improved load-bearing capacity: The upper plate's bottom support column is embedded in the positioning groove of the lower plate to achieve initial positioning. Combined with the detachable connection of bolts and nuts, it ensures that the upper and lower layers are firmly connected and not easy to loosen. The cross-shaped reinforcing ribs inside the support column further enhance the structural strength of the support column, effectively improving the overall load-bearing capacity and deformation resistance of the pallet and extending its service life.
[0014] 2. Excellent anti-slip effect and high cargo safety: The top edge of the upper shelf is equipped with a rubber anti-slip layer. The anti-slip texture evenly distributed on its surface increases the friction between the cargo and the pallet, effectively preventing the cargo from slipping due to vibration or tilting during transfer and stacking, thus ensuring the safety of cargo transportation.
[0015] 3. Convenient and efficient handling and forklifting: U-shaped handles are symmetrically arranged on both sides of the upper plate and are fixed to the upper plate by reinforcing strips, which improves the connection strength of the handles and makes it easier to grip and save effort when handling manually; the edge reinforcement plate of the lower plate forms forklift fork holes, and the inner wall limit block can accurately guide the forklift fork teeth to position, avoid fork teeth deviation and impact on the pallet, improve forklifting efficiency and protect the pallet body.
[0016] 4. Cushioning and shock absorption to protect goods and the ground: The elastic rubber cushioning pads at the four corners of the bottom of the lower shelf can effectively absorb vibrations during transportation and reduce wear and tear on goods caused by bumps; the ventilation holes on the bottom of the cushioning pads serve both as ventilation and auxiliary shock absorption, while also preventing the pallet from making hard contact with the ground and reducing wear and tear on the ground.
[0017] 5. Detachable design for easy maintenance and storage: The upper and lower panels are detachably connected by bolts and nuts. Damaged parts (such as support columns, anti-slip layers, etc.) can be replaced individually, reducing maintenance costs. When not in use, they can be disassembled and stored to reduce storage space occupation and improve space utilization.
[0018] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description
[0019] Figure 1 This is a perspective view of this embodiment;
[0020] Figure 2 This is a schematic diagram of the reinforcing rib structure of the component in this embodiment;
[0021] Figure 3 This is a schematic diagram of the lower layer plate structure of the component in this embodiment;
[0022] Figure 4 This is a schematic diagram of the connector structure in this embodiment.
[0023] In the diagram: 1. Upper plate; 2. Lower plate; 3. Support column; 4. Connector; 41. Bolt; 42. Nut; 5. Reinforcing rib; 6. Anti-slip layer; 8. Positioning groove; 9. Handle; 10. Reinforcing plate; 11. Limiting block; 15. Reinforcing strip; 16. Forklift fork hole. Detailed Implementation
[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0025] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.
[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0027] I. Structural Composition and Parameters
[0028] The two-layer overlapping wooden pallet provided in this embodiment is suitable for the transfer and storage of heavy goods (such as home appliances, hardware accessories, etc., with a single pallet load capacity ≤1000kg) in logistics warehousing. The specific structure is as follows:
[0029] Upper and lower layers: Both are made of high-strength pine wood panels. Upper layer 1 measures 1200mm×1000mm×20mm, and lower layer 2 measures 1200mm×1000mm×25mm. The surface of the panels is treated with anti-corrosion to improve moisture resistance and wear resistance.
[0030] Support columns: Four support columns 3 are vertically fixed at the four corners of the bottom surface of the upper board 1. The support columns are hollow tubular pine wood structures with an outer diameter of 80mm, an inner diameter of 60mm, and a height of 150mm. The internal cross-shaped reinforcing ribs 5 (made of hard bamboo strips with a thickness of 8mm) are fixed along the axial direction to enhance the bending resistance of the support columns.
[0031] Positioning and connection structure: The four corners of the top surface of the lower plate 2 are provided with positioning grooves 8 with a depth of 50mm corresponding to the support column positions (with clearance fit with the bottom of the support column); the upper plate and the lower plate are fixed by 4 sets of connectors 4, the connectors are M10 stainless steel bolts 41 and nuts 42, the bolts pass through the axis of the upper plate 1 and the support column 3, and are tightened and fixed with the nuts on the bottom surface of the lower plate.
[0032] Anti-slip and cushioning structure: The top edge of the upper board 1 has a 50mm wide rubber anti-slip layer 6 fixed along the perimeter, with diamond anti-slip patterns pressed on the surface at 10mm intervals; the bottom of the lower board 2 has elastic rubber cushioning pads (not marked with numbers) with dimensions of 100mm×100mm×20mm fixed at the four corners, and ventilation holes with a diameter of 5mm (spaced 20mm) are evenly opened on the bottom surface of the cushioning pads.
[0033] Handling structure: U-shaped handles 9 are symmetrically installed on both sides of the top surface of the upper plate 1. The handles are made of round steel with a diameter of 12mm (opening width 150mm, height 80mm). The two ends are fixed to the upper plate with bolts by steel reinforcing strips 15 with a thickness of 5mm (size 100mm×50mm). Two reinforcing plates 10 (pine wood, size 1200mm×80mm×30mm) are fixed along the length of the bottom edge of the lower plate 2. Two forklift fork holes 16 (width 200mm, height 100mm) are formed between the reinforcing plates and the lower plate. Steel limiting blocks 11 with a thickness of 8mm (spaced 500mm) are welded to the inner wall of the fork holes.
[0034] II. Assembly and Usage Process
[0035] Assembly process: First, fix the support column 3 vertically to the four corners of the bottom surface of the upper plate 1 with wood screws; then lay the lower plate 2 flat, align the bottom end of the support column of the upper plate with the positioning groove 8 of the lower plate and insert it to achieve initial positioning; finally, insert 4 sets of bolts 41 through the upper plate and the support column from the top surface of the upper plate, and tighten them with nuts 42 on the bottom surface of the lower plate to complete the overall assembly.
[0036] Real-world use cases:
[0037] Goods stacking: Place household appliances, hardware accessories and other goods on the top surface of the upper shelf. The rubber anti-slip layer 6 increases the friction between the goods and the pallet through the anti-slip texture, preventing the goods from slipping when stacked or slightly tilted.
[0038] Manual handling: When the weight of the goods is ≤200kg, the operator can lift the pallet through the U-shaped handles 9 on both sides of the upper shelf. The reinforcing strip 15 ensures that the handles are firmly connected to the upper shelf to prevent the handles from falling off during handling.
[0039] Forklift transfer: When the weight of the goods is greater than 200kg, the forklift forks are inserted into the fork holes 16 of the lower plate. The limiting block 11 on the inner wall of the fork hole restricts the fork offset and prevents the fork from hitting the pallet body. During transportation, the elastic rubber buffer pad on the bottom of the lower plate absorbs the vibration caused by road bumps and reduces the wear of the goods caused by vibration. The ventilation holes on the bottom of the buffer pad can avoid the suction force caused by the seal when the pallet is in contact with the ground, making it easy to separate when the pallet is put down.
[0040] Maintenance and storage: If the support column or anti-slip layer is partially damaged, the bolts and nuts can be loosened to separate the upper and lower panels and replace the damaged parts individually; when not in use, the bolts and nuts can be removed to separate the upper and lower panels and stack them for storage, reducing the space occupied in the warehouse.
[0041] Implementation effect
[0042] This embodiment utilizes a structural design combining positioning grooves and bolt connections, along with cross-shaped reinforcing ribs within the support columns, to increase the overall load-bearing capacity of the pallet to 1000kg, ensuring it is not easily deformed over long-term use. The anti-slip, cushioning, and limiting structures effectively guarantee the safety of cargo transportation. The detachable design and dedicated handle enhance the pallet's ease of maintenance and handling efficiency, making it suitable for various logistics scenarios such as e-commerce warehouses and factory workshops.
[0043] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.
Claims
1. A wooden pallet with a two-layer overlapping structure, comprising an upper layer (1) and a lower layer (2), characterized in that: The upper plate (1) has support columns (3) vertically fixed at the four corners of its bottom surface. The lower plate (2) has positioning grooves (8) at the four corners of its top surface corresponding to the positions of the support columns (3). The bottom end of the support column (3) is embedded in the positioning groove (8). The upper plate (1) and the lower plate (2) are detachably connected by at least two sets of connectors (4). The connectors (4) include bolts (41) that pass through the upper plate (1) and the support columns (3) and nuts (42) that cooperate with the bolts (41).
2. The wooden pallet with a two-layer overlapping structure according to claim 1, characterized in that: The support column (3) is a hollow tubular structure with reinforcing ribs (5) fixedly connected along the axial direction inside. The reinforcing ribs (5) are distributed in a cross shape.
3. The wooden pallet with a two-layer overlapping structure according to claim 1, characterized in that: The upper plate (1) has an anti-slip layer (6) fixedly connected to the top edge. The anti-slip layer (6) is made of rubber and has anti-slip textures evenly distributed on its surface.
4. The wooden pallet with a two-layer overlapping structure according to claim 1, characterized in that: The bottom of the lower plate (2) is fixedly connected to four corners of a buffer pad, which is an elastic rubber pad with ventilation holes on its bottom surface.
5. The wooden pallet with a two-layer overlapping structure according to claim 1, characterized in that: The upper plate (1) is symmetrically provided with handles (9) on both sides of the top surface. The handles (9) are U-shaped and their two ends are fixedly connected to the upper plate (1) by reinforcing strips (15).
6. The wooden pallet with a two-layer overlapping structure according to claim 1, characterized in that: A reinforcing plate (10) is fixedly connected to the bottom edge of the lower plate (2), and a forklift fork hole (16) is formed between the reinforcing plate (10) and the lower plate (2). A limit block (11) is fixedly connected to the inner wall of the forklift fork hole (16).