Support Units and Pallets

Abstract

The support unit (100) and pallet (1000) include a support unit having a first plate (110) and a second plate (120) spaced apart from each other, a plurality of first annular walls (111) are provided at one end of the first plate (110) at a distance from each other, a plurality of second annular walls (121) are provided at one end of the second plate (120) facing the first plate (110) at a distance from each other, the plurality of second annular walls (121) are provided corresponding to the plurality of first annular walls (111), the second annular walls (121) are fitted onto the outside of the first annular wall (111), and the second annular walls (121) and the first annular wall (111) are fitted together to form a support structure (130) for supporting the first plate (110) and the second plate (120). The support structure (130) formed by connecting the first annular wall (111) and the second annular wall (121) is disposed between the first plate (110) and the second plate (120) at a distance, and can be combined with the first plate (110) and the second plate (120) to form a stable support unit (100), which has the advantages of high structural strength and strong load-bearing capacity. In addition, cavities are formed both between the first plate (110) and the second plate (120) and within the support structure (130), which ensures the structural strength of the support unit (100) and effectively reduces the weight of the support unit (100).

Description

[Technical field]

[0001] The present invention relates to the technical field of pallets, and in particular to a support unit and a pallet. [Background technology]

[0002] Pallets, also called loading platforms, are used to carry materials or products and are widely used as support structures in logistics transportation. In the related art, pallets are usually made of plastic or wood materials. However, plastic pallets are easily damaged by forklifts and have limited load capacity. Wooden pallets are prone to moisture absorption and mold growth, and cannot be used without fumigation, which increases the cost of use, and wooden pallets are not strong enough and are easily damaged. Summary of the Invention [Problem to be solved by the invention]

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art, and to this end, the present invention proposes a support unit with high structural strength, high load-bearing capacity and low weight.

[0004] The present invention further proposes a pallet comprising the above-mentioned support unit.

[0005] The present invention further proposes a rack comprising the above support unit.

[0006] The invention further proposes an enclosure comprising a support unit as described above. [Means for solving the problem]

[0007] A support unit according to an embodiment of the first aspect of the present invention comprises a first plate having a plurality of first annular walls at one end thereof, and a second plate spaced apart from the first plate, the second plate having a plurality of second annular walls at one end thereof facing the first plate, the plurality of second annular walls extending towards the first plate and corresponding to the plurality of first annular walls, the second annular walls fitted into the outside of the first annular wall, and the second annular walls fitted into the first annular wall to form a support structure for supporting the first plate and the second plate.

[0008] The support unit according to the embodiment of the present invention has at least the following useful effects.

[0009] A first plate and a second plate are provided at a distance from each other, a plurality of first annular walls provided on the first plate are fitted correspondingly to the outside of a plurality of second annular walls provided on the second plate, and the first annular walls are fitted and connected to each other. This realizes a firm connection between the first plate and the second plate, and improves the connection stability of the first plate and the second plate. The first annular wall and the second annular wall are connected to form a support structure for supporting the first plate and the second plate, and the support structure is arranged between the first plate and the second plate at a distance to form a stable support unit in combination with the first plate and the second plate, so that the support unit has the advantages of high structural strength and strong load-bearing capacity. A cavity is formed between the first plate and the second plate and in the support structure, which ensures the structural strength of the support unit and effectively reduces the weight of the support unit.

[0010] According to some embodiments of the present invention, The inner diameter of the second annular wall at one end remote from the second plate is smaller than the outer diameter of the first annular wall at one end remote from the first plate, and the second annular wall is provided with a second edge extending outward at one end remote from the second plate, and the second edge is joined to the first plate. .

[0011] According to some embodiments of the present invention, at least a portion of the first annular wall has an inner cross-sectional diameter that gradually increases along a direction away from the first plate.

[0012] According to some embodiments of the present invention, the longitudinal section of the first annular wall is inclined with respect to the axis of the first annular wall, and the inclination angle ranges from 1 degree to 3 degrees.

[0013] According to some embodiments of the invention, the first annular wall is formed with a through groove having a circular, triangular, quadrilateral or hexagonal cross-sectional profile.

[0014] According to some embodiments of the present invention, the cross-sectional profile of the through groove is circular, the inner diameter of the through groove ranges from 35mm to 45mm, and the distance between the axes of adjacent through grooves ranges from 40mm to 60mm.

[0015] According to some embodiments of the invention, the first annular wall is provided with a first edge extending outwardly at an end remote from the first plate, the first edge being joined to the second plate.

[0016] According to some embodiments of the present invention, a second guide edge is provided at a connection point between the second plate and the second annular wall, an engagement groove is formed in the second guide edge, and the first edge is engaged with the engagement groove.

[0017] According to some embodiments of the invention, the first edge has a lowest point in a plane in which the second plate lies.

[0018] According to some embodiments of the present invention, the first plate is made of metal. Material , the first annular wall and The first plate is a one-piece molded product .

[0019] According to some embodiments of the invention, the second annular wall is provided with a second edge extending outwardly at an end remote from the second plate, the second edge being joined to the first plate.

[0020] According to some embodiments of the present invention, a first guide edge is provided at a connection point between the first plate and the first annular wall, and the second edge is joined to the first guide edge.

[0021] According to some embodiments of the present invention, the first guide edge has an arc-shaped longitudinal section, and the second edge has an arc-shaped longitudinal section that fits the first guide edge.

[0022] According to some embodiments of the present invention, the second plate is made of metal. Material , the second annular wall and The second plate is a one-piece molded product .

[0023] According to some embodiments of the present invention, the first plate and the second plate are made of metal, a first folded edge is provided on an outer periphery of the first plate, a second folded edge is provided on an outer periphery of the second plate, and the first folded edge and the second folded edge are fixedly connected.

[0024] According to some embodiments of the present invention, a cavity having a depth in the range of 12 mm to 20 mm is formed between the first plate and the second plate.

[0025] A pallet according to an embodiment of the second aspect of the present invention comprises a support unit as described in the above embodiments.

[0026] According to some embodiments of the present invention, the support unit forms a support plate, and a support leg is provided at the bottom of the support plate.

[0027] According to some embodiments of the present invention, the first plate is provided with a third through hole and a third annular wall, the third annular wall is provided on an outer periphery of the third through hole, extends toward the second plate and abuts against the second plate, the second plate is provided with a fourth through hole and a fourth annular wall, the fourth annular wall is provided on an outer periphery of the fourth through hole and extends away from the first plate, the support leg is a hollow cone structure with an open upper end, is fitted into the fourth annular wall, and its outer diameter gradually decreases along the direction away from the support plate, and the hole diameter of the third through hole is smaller than the hole diameter of the fourth through hole. big .

[0028] According to some embodiments of the present invention, the support leg comprises a bottom wall and a peripheral wall, one end of the peripheral wall is connected to the bottom wall and the other end is connected to the outside of the fourth annular wall, and a fifth through hole is provided in the bottom wall.

[0029] According to some embodiments of the present invention, the peripheral wall is provided at one end remote from the bottom wall with a mounting edge adapted to abut against the second plate.

[0030] According to the third embodiment of the present invention, the rack includes a support plate having the support units described in the above embodiments.

[0031] According to an embodiment of the fourth aspect of the present invention, an enclosure comprises a fence having a support unit as described in the above embodiments.

[0032] According to a manufacturing method for a pallet of an embodiment of the fifth aspect of the present invention, the manufacturing method includes the steps of: providing a first plate; machining a plurality of first through holes at intervals along a length direction and a width direction of the first plate; pressing a hollow cylindrical first annular wall along the positions of the plurality of first through holes; providing a second plate; machining a plurality of second through holes at intervals along a length direction and a width direction of the second plate; pressing a hollow cylindrical second annular wall along the positions of the plurality of second through holes; placing the first plate and the second plate in a mirror symmetrical manner and aligning the first annular wall and the second annular wall; joining the first plate and the second plate such that the second annular wall is fitted outside the first annular wall and closely contacts the first annular wall; providing a support leg; and fixedly connecting the support leg to the second plate.

[0033] The method for manufacturing a pallet according to the embodiment of the present invention has at least the following useful effects.

[0034] By machining a first annular wall on a first plate, machining a second annular wall on a second plate, and joining the first plate and the second plate in a mirror-symmetric manner so that the second annular wall is fitted outside the first annular wall and closely adjacent to the first annular wall, the first annular wall and the second annular wall form a support structure for supporting the pallet, and machining of a metal pallet is realized. The machining process is simple and production costs are reduced, and the produced pallet has high structural strength, strong loading capacity and long service life.

[0035] According to some embodiments of the present invention, after the step of joining the first plate and the second plate so that the second annular wall is fitted to the outside of the first annular wall and is in close contact with the first annular wall, the step includes pressing at least a portion of the first annular wall outward so that the inner diameter of a cross section of the first annular wall gradually increases along a direction away from the first plate.

[0036] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

[0037] The present invention will now be further described with reference to the drawings and examples. [Brief description of the drawings]

[0038] [Figure 1] FIG. 2 is a schematic diagram of the structure of a pallet in one embodiment of the present invention. [Diagram 2] FIG. 2 is a cross-sectional view of a support unit according to an embodiment of the present invention. [Diagram 3] FIG. 3 is an enlarged view of a portion A in FIG. [Figure 4] FIG. 3 is an enlarged view of a portion B in FIG. [Diagram 5] FIG. 5 is an enlarged view of another embodiment of FIG. [Figure 6] FIG. 2 is a partial cross-sectional view of FIG. [Figure 7] FIG. 7 is an enlarged view of a portion C in FIG. [Figure 8] FIG. 7 is an enlarged view of a portion D in FIG. [Figure 9]FIG. 7 is an enlarged view of a portion E in FIG. [Figure 10] 3 is a flowchart of a method for manufacturing a pallet according to one embodiment of the present invention. [Figure 11] 5 is a flowchart of a method for manufacturing a pallet according to another embodiment of the present invention. [Figure 12] 5 is a flowchart of a method for manufacturing a pallet according to another embodiment of the present invention. [Figure 13] 5 is a flowchart of a method for manufacturing a pallet according to another embodiment of the present invention. [Figure 14] 5 is a flowchart of a method for manufacturing a pallet according to another embodiment of the present invention. [Figure 15] 5 is a flowchart of a method for manufacturing a pallet according to another embodiment of the present invention. [Figure 16] 5 is a flowchart of a method for manufacturing a pallet according to another embodiment of the present invention. [Figure 17] 5 is a flowchart of a method for manufacturing a pallet according to another embodiment of the present invention. [Figure 18] 3 is a schematic diagram of a hole punching step for a first plate or a second plate in a pallet manufacturing method according to one embodiment of the present invention. FIG. [Figure 19] 4 is a schematic diagram of a step of aligning a first plate and a second plate in a pallet manufacturing method according to one embodiment of the present invention. FIG. [Figure 20] FIG. 20 is a partial cross-sectional view of FIG. [Figure 21] 2 is a schematic diagram of a step of joining a first plate and a second plate in a manufacturing method for a pallet according to one embodiment of the present invention. FIG. [Figure 22] FIG. 22 is a partial cross-sectional view of FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0039] Hereinafter, the embodiments of the present invention will be described in detail. The drawings show the embodiments. Hereinafter, the same or similar reference numerals indicate the same or similar components or components having the same or similar functions. The embodiments described below with reference to the drawings are merely illustrative and are intended to interpret the present invention, and should not be understood as limiting the present invention.

[0040] In describing the present invention, orientation descriptions, e.g., orientations or positional relationships indicated by up, down, etc., are based on the orientations or positional relationships shown in the drawings and are merely for the purpose of facilitating and simplifying the description of the present invention, and are not to be understood as limiting the present invention, as they do not indicate or imply that the devices or elements referred to have a particular orientation and must be constructed and operated in a particular orientation.

[0041] In the present description, plural means two or more. The descriptions of first, second, etc. are merely used to distinguish technical features and should not be understood as indicating or implying relative importance, or suggesting the number of the technical features indicated, or suggesting the context of the technical features indicated.

[0042] In describing the present invention, unless otherwise clearly specified, terms such as providing, mounting, and connection should be understood in a broad sense, and those skilled in the art can appropriately determine the specific meanings of the above-mentioned terms in the present invention according to the specific content of the technical solution.

[0043] As shown in Figure 1, a pallet 1000 according to an embodiment of the present invention includes a support plate 200 for carrying cargo, which is formed by combining a number of support units 100. The pallet 1000 according to this embodiment realizes load carrying by the support units 100, has a strong load carrying capacity, and can be distributed and used at multiple stages of logistics transportation.

[0044] As shown in FIG. 2 and FIG. 3, the support unit 100 according to an embodiment of the present invention can be used in a panel structure such as a pallet or a box for carrying a load. The support unit 100 according to the present embodiment includes a first plate 110 and a second plate 120 spaced apart from each other. The first plate 110 and the second plate 120 can be made of a metal material such as a sheet metal part. By using the sheet metal parts to process the first plate 110 and the second plate 120, the processing process of the support unit 100 is simplified, and the manufactured support unit 100 has high structural strength and lightweight characteristics. The first plate 110 and the second plate 120 can also be made of other thin metal materials. By manufacturing the first plate 110 and the second plate 120 from metal, they can be easily collected and recycled, which is environmentally friendly and saves resources.

[0045] In addition, both the first plate 110 and the second plate 120 are manufactured using galvanized plate material or electrolytic plate material, and galvanized plate material and electrolytic plate material have many characteristics such as high strength, high ductility, corrosion resistance, nuclear radiation resistance, efficient reflection of ultraviolet rays, ease of processing, light weight, recyclability, no insect damage and low carbon environmental protection.

[0046] As shown in FIG. 1, for example, when the support unit 100 is used to manufacture a pallet, the pallet is manufactured using a galvanized sheet material or an electrolytic sheet material as the support unit 100, which fully meets the requirements for the use of the pallet. Furthermore, after the pallet made of the galvanized sheet material or the electrolytic sheet material is disassembled, the waste generated is very small, and the recovery rate of the disassembled pallets made of the galvanized sheet material or the electrolytic sheet material reaches more than 80%, which meets the requirements for environmental protection effects.

[0047] 2 and 3, a plurality of first annular walls 111 are provided at intervals along the length and width of the first plate 110 on the lower end surface of the first plate 110. The plurality of first annular walls 111 are provided extending toward the second plate 120. The first annular walls 111 are hollow tubular structures that penetrate vertically. A plurality of second annular walls 121 are provided at intervals along the length and width of the second plate 120 on the upper end surface of the second plate 120. The plurality of second annular walls 121 are provided extending toward the first plate 110. The second annular walls 121 are hollow tubular structures that penetrate vertically. Note that the "lower end surface" and "upper end surface" referred to here are merely for this specific embodiment, and should be understood as the relative positions of the two, rather than being limited to their absolute positions. For example, the lower end surface of the first plate 110 is one end surface of the first plate 110 facing the second plate 120 , and the upper end surface of the second plate 120 is one end surface of the second plate 120 facing the first plate 110 .

[0048] A plurality of second annular walls 121 and a plurality of first annular walls 111 are provided in a one-to-one correspondence, and the second annular walls 121 are fitted to the outside of the first annular walls 111. The second annular walls 121 and the first annular walls 111 are provided to be in close contact with each other, thereby forming a stable support structure 130 for supporting the first plate 110 and the second plate 120 by bringing the first annular walls 111 and the second annular walls 121 into close contact with each other. The close contact can be understood as a connection method in which no relative movement occurs between the first annular walls 111 and the second annular walls 121. The first annular walls 111 and the second annular walls 121 may be connected by interference fit or intermediate fit, or may be connected by complete or partial joining. The first annular walls 111 and the second annular walls 121 may be in close contact with each other by pressing deformation, and is not specifically limited here.

[0049] The plurality of support structures 130 are hollow tubular structures. The support structures 130 are disposed between the first plate 110 and the second plate 120 at intervals. The plurality of support structures 130 support the first plate 110 and the second plate 120, and can be combined with the first plate 110 and the second plate 120 to form a stable support unit 100. The support structure 130 formed by fitting the first annular wall 111 and the second annular wall 121 has high rigidity and is not easily deformed by pressure, and can effectively prevent the first plate 110 and the second plate 120 from bending or twisting, thereby improving the structural strength of the support unit 100. The support unit 100 carries the load from the first plate 110 or the second plate 120 through the support structure 130, and distributes the load to the plurality of support structures 130, thereby improving the load-bearing capacity of the support unit 100.

[0050] In addition, since the first annular wall 111 and the second annular wall 121 are in close contact with each other, the connection between the first plate 110 and the second plate 120 becomes stronger, and the connection stability between the first plate 110 and the second plate 120 is improved.

[0051] Furthermore, the support structure 130 is a hollow structure, and cavities are formed between the first plate 110 and the second plate 120, and within the support structure 130, which ensures the structural strength of the support unit 100 and effectively reduces the weight of the support unit 100, making the support unit 100 lighter and more convenient to transport.

[0052] The first annular wall 111 may be formed by pressing the first plate 110, i.e., the first annular wall 111 and the first plate 110 are an integrally molded structure, and the first annular wall 111 may be fixedly connected to the first plate 110 by a method such as welding or riveting, and is not specifically limited here. When forming the first annular wall 111 by pressing the first plate 110, the first plate 110 may be punched and then pressed to form the first annular wall 111, or the first plate 110 may be pressed and then punched to form the first annular wall 111.

[0053] As shown in FIG. 3, in some embodiments of the present invention, the second annular wall 121 is provided with a second edge 122 extending outward at its upper end (i.e., the end away from the second plate 120). The second edge 122 can be formed by bending the second annular wall 121 or integrally formed with the second plate 120. The second edge 122 is joined to the first plate 110, so that the first annular wall 111 and the second annular wall 121 are more closely connected to each other, and the connection is more solid, thereby increasing the structural strength of the support structure 130. The second edge 122 can support the first plate 110 and the connection point between the first plate 110 and the first annular wall 111, so that the second annular wall 121 can more stably carry the load of the first plate 110, thereby improving the load-bearing capacity of the support unit 100. In addition, the second edge 122 can be formed into an arc-shaped chamfer, so that when the first plate 110 and the second plate 120 are joined, the second edge 122 has a guiding effect and can guide the first annular wall 111 to fit into the second annular wall 121, making the joining of the first plate 110 and the second plate 120 smoother and improving assembly efficiency.

[0054] As shown in FIG. 3, in some embodiments of the present invention, a first guide edge 113 is provided at the connection point between the first plate 110 and the first annular wall 111. The first guide edge 113 may be integrally processed with the first annular wall 111, so as to improve the stress concentration problem at the connection point between the first plate 110 and the first annular wall 111. The first guide edge 113 is bonded to the second edge 122, so as to achieve a more stable connection between the first guide edge 113 and the second edge 122. The second edge 122 and the first guide edge 113, and the first annular wall 111 and the second annular wall 121 jointly form the support structure 130, which can further improve the structural strength and structural stability of the support structure 130, and further improve the load-bearing capacity of the support unit 100.

[0055] As shown in FIG. 3, in some embodiments of the present invention, the longitudinal section of the first guide edge 113 is an arc shape. The first guide edge 113 with an arc shape structure can improve the connection strength between the first plate 110 and the first annular wall 111, and effectively reduce the stress concentration situation. It should be noted that the longitudinal section of the first guide edge 113 can be understood as a section formed by cutting the first guide edge 113 along a plane on which the axis of the first annular wall 111 is located. The longitudinal section of the second edge 122 is an arc shape that fits the first guide edge 113. The second edge 122 with an arc shape structure can improve the connection strength between the second annular wall 121, and effectively reduce the stress concentration situation, and the second edge 122 can more effectively support the first plate 110 and the first guide edge 113. It should be noted that the longitudinal section of the second edge 122 can be understood as a section formed by cutting the second edge 122 along a plane on which the axis of the second annular wall 121 is located.

[0056] As shown in FIG. 6, FIG. 7 and FIG. 8, in some embodiments of the present invention, the first annular wall 111 is processed by deforming the first plate 110 toward the second plate 120. For example, the deformation method may be a pressing method or the like. By adopting the deformation method for processing, the connection strength between the first annular wall 111 and the first plate 110 can be improved, and the structural strength of the first plate 110 and the first annular wall 111 can be further improved, and the load capacity of the support unit 100 can be further improved. The first annular wall 111 has one end connected to the first plate 110 and the other end extending away from the first plate 110 and penetrating the second plate 120. The first annular wall 111 penetrates the second plate 120 to form a through groove 114. The through groove 114 penetrates the first plate 110 and the second plate 120 to form a plurality of hole positions in the support unit 100. By arranging the hole positions, the support unit 100 can have a drainage function, which allows the support unit 100 to be used in outdoor environments, increases its service life, and further allows the pallet 1000 to be conveniently cleaned, and is favorable for the ventilation of cargo.

[0057] Referring to FIG. 3, the first annular wall 111 of this embodiment has an inner diameter at one end away from the first plate 110 that is larger than the inner diameter at one end approaching the first plate 110. That is, the inner diameter of the cross section of the first annular wall 111 gradually increases along the direction away from the first plate 110. In addition, in order to realize the above structure, a method of pressing the first annular wall 111 outward, such as expansion or hole widening, can be adopted, and is not specifically limited here. For example, the entire first annular wall 111 can be pressed from one end of the first annular wall 111 connected to the first plate 110 to one end away from the first plate 110 so that the inner diameter of the cross section of the first annular wall 111 gradually increases, or one end of the first annular wall 111 away from the first plate 110 can be pressed so that the inner diameter of the cross section of a part of the first annular wall 111 gradually increases. After the first annular wall 111 is pressed, the connection between the first annular wall 111 and the second annular wall 121 can be made stronger, and the first annular wall 111 and the second annular wall 121 form a tapered structure, which can prevent the second plate 120 from separating from the first plate 110, improves the structural stability of the support unit 100, increases the structural strength of the support unit 100, and increases the loading capacity.

[0058] 3, the longitudinal section of the first annular wall 111 is inclined with respect to the axis of the first annular wall 111. The longitudinal section of the first annular wall 111 can be understood as a section formed by cutting the first annular wall 111 along a plane on which the axis of the first annular wall 111 is located. In this embodiment, the first annular wall 111 is inclined, so that the first annular wall 111 and the second annular wall 121 are formed into a tapered structure, and the second plate 120 can be prevented from being separated from the first plate 110, and the structural stability of the support unit 100 is further improved. The inclination angle range is 1 degree to 3 degrees, and when the inclination angle is within the above parameter range, the processing difficulty is reduced, and the structural stability of the support unit 100 is ensured.

[0059] 7 and 8, the cross-sectional profile of the through groove 114 is circular, so that the support unit 100 can be processed more easily and the loading effect is more suitable. The through grooves 114 can be distributed uniformly in the support unit 100, so that the structural layout of the support unit 100 is better. In the support unit 100 of this embodiment, the inner diameter range of the through groove 114 is 35mm to 45mm, and the distance range of the axis of the adjacent through grooves 114 is 40mm to 60mm. By satisfying the above parameter range, the support structure 130 of the support unit 100 can realize a more suitable structural layout between the first plate 110 and the second plate 120, so that the support unit 100 can distribute the load to each support structure 130 during loading, reduce the stress concentration, and improve the loading capacity of the support unit 100. And the support unit 100 can be processed more easily and the yield is higher.

[0060] As shown in Fig. 7 and Fig. 8, in some embodiments of the present invention, the first annular wall 111 forms a through groove 114 with a circular cross-sectional profile. Therefore, the first annular wall 111 and the second annular wall 121 are both circular columnar structures, which makes the processing and assembly of the first plate 110 and the second plate 120 more convenient, reduces the difficulty of processing and assembly, and improves production efficiency. Of course, the cross-sectional profile of the through groove 114 can be a triangle, a rectangle, a hexagon, etc., that is, the cross-sectional shapes of the first annular wall 111 and the second annular wall 121 can be a triangle, a rectangle, a hexagon, etc., and are not specifically limited here. The support unit 100 adopting the above structure also has the advantages of high structural strength and strong load-bearing capacity.

[0061] Continuing to refer to FIG. 7 and FIG. 8, in some embodiments of the present invention, the first annular wall 111 is formed by pressing the first plate 110. By directly pressing the first plate 110 to form the first annular wall 111, the processing process can be simplified, the production efficiency can be improved, and the amount of metal used can be reduced, which can save costs and reduce the weight of the support unit 100. In some embodiments of the present invention, the second annular wall 121 is formed by pressing the second plate 120. By directly pressing the first plate 110 to form the second annular wall 121, the processing process can be simplified, the production efficiency can be improved, and the amount of metal used can be reduced, which can save costs and reduce the weight of the support unit 100.

[0062] As shown in FIG. 3, in some embodiments of the present invention, the first annular wall 111 is provided with a first edge 112 extending outward from the lower end (i.e., one end away from the first plate 110), and the first edge 112 can be formed by bending the first annular wall 111. The first edge 112 is joined to the second plate 120, and the first edge 112 is pressed to the second plate 120. The first edge 112 can be connected to the second plate 120 by pressing, or can be welded to the second plate 120, or can be riveted to the second plate 120, and the specific connection manner is not specifically limited here. Thereby, the first annular wall 111 and the second annular wall 121 are more closely adjacent to each other, the connection is more solid, and the structural strength of the support structure 130 is increased. Furthermore, the first edge 112 can support the second plate 120 and the connection point between the second plate 120 and the second annular wall 121, thereby enabling the first annular wall 111 to more stably support the load of the second plate 120, thereby improving the loading capacity of the support unit 100.

[0063] Continuing to refer to FIG. 3, in some embodiments of the present invention, a second guide edge 123 is provided at the connection point between the second plate 120 and the second annular wall 121. The second guide edge 123 may be integrally processed and formed with the second annular wall 121, so as to improve the stress concentration problem at the connection point between the second plate 120 and the second annular wall 121. The second guide edge 123 is bonded to the first edge 112, so as to achieve a more stable connection between the second guide edge 123 and the first edge 112. The first edge 112 and the second guide edge 123, and the first annular wall 111 and the second annular wall 121 jointly form the support structure 130, which can further improve the structural strength and structural stability of the support structure 130, and further improve the load-bearing capacity of the support unit 100.

[0064] The second guide edge 123 is formed with an engagement groove 1231, and the first edge 112 is engaged with the engagement groove 1231, so that the connection between the first edge 112 and the second guide edge 123 can be more stable. The structure of the engagement groove 1231 can be formed by pushing the first edge 112 to the second guide edge 123 and pressing the second guide edge 123, which is simpler and more convenient to process and has a more stable structure. Of course, the structure of the engagement groove 1231 can also be realized by other types of processing methods.

[0065] 3, in some embodiments of the present invention, the first edge 112 has its lowest position in the plane where the second plate 120 is located, so that the lower end surface of the support unit 100 has a smooth surface, preventing the operator from cutting his / her hand during transportation, or the transportation device (e.g., forklift) from interfering with the center of gravity, and the first edge 112 and the second plate 120 are flush with each other, so that the contact area is larger when the transportation device supports the support unit 100, the force it receives is more uniform, and the stability is higher.

[0066] 3, in some embodiments of the present invention, a cavity 140 is formed between the first plate 110 and the second plate 120, and a support structure 130 formed by a first annular wall 111 and a second annular wall 121 is provided in the cavity 140, so that the first plate 110 and the second plate 120 can be combined to support the shape of the cavity 140. The support structure 130 makes the cavity 140 a sealed space, and prevents foreign matter such as water from entering the cavity 140.

[0067] In the embodiment of the present invention, the depth of the cavity 140 is within a range of 12 mm to 20 mm. When within the above range, the support structure 130 can provide the support unit 100 with sufficient compressive strength, and can ensure that the cavity 140 is not deformed even when pressed, thereby increasing the durability of the support unit 100.

[0068] As shown in Figures 4 and 5, in some embodiments of the present invention, a first folded edge 115 is provided on the outer periphery of the first plate 110, a second folded edge 124 is provided on the outer periphery of the second plate 120, and the first folded edge 115 and the second folded edge 124 are fixedly connected. The structure of combining the first folded edge 115 and the second folded edge 124 can close the edge of the support unit 100, and prevent foreign matter from entering the cavity 140 from the edge of the support unit 100 through the gap between the first plate 110 and the second plate 120, thereby improving the stability of the support unit 100. Note that the structure of the first folded edge 115 and the second folded edge 124 may be a connection structure commonly used in sheet metal parts, a folded edge structure fixed using a fastener such as a bolt, or a folded edge structure fixed by welding, riveting, or the like, and is not specifically limited here.

[0069] As shown in Figs. 1 to 9, a pallet 1000 according to an embodiment of the present invention includes the support unit 100 according to the above embodiment. The embodiment of the present invention employs the support unit 100 according to the first aspect, and the support unit 100 includes a first plate 110 and a second plate 120 spaced apart from each other, and a plurality of first annular walls 111 on the first plate 110 are fitted into the outer sides of a plurality of second annular walls 121 on the second plate 120, and the first annular walls 111 and the second annular walls 121 are fitted together to connect the first and second plates 110 and 120. This provides a firm connection between the first and second plates 110 and improves the connection stability between the first and second plates 110 and 120. The first annular wall 111 and the second annular wall 121 are connected to form a support structure 130 for supporting the first plate 110 and the second plate 120, and the support structure 130 is disposed between the first plate 110 and the second plate 120 at a distance, so that the support structure 130 can be combined with the first plate 110 and the second plate 120 to form a stable support unit 100, so that the pallet 1000 has the advantages of high structural strength and strong loading capacity. Cavities are formed between the first plate 110 and the second plate 120 and in the support structure 130, which ensures the structural strength of the pallet 1000 and effectively reduces the weight of the pallet 1000.

[0070] The pallet 1000 adopts all the technical means of the support unit 100 of the above embodiment, and therefore has at least all the useful effects of the technical means of the above embodiment, so detailed description is omitted here.

[0071] As shown in Fig. 6, in some embodiments of the present invention, a support plate 200 is formed by one or more support units 100. A support leg 300 is provided at the bottom of the support plate 200 to support the support plate 200 so as to space the support plate 200 away from the bottom surface, which makes it convenient for the pallet 1000 to be transported by a transport device such as a forklift. The support leg 300 can be made of a metal material, a wood material, or a plastic material. Note that the support leg 300 may be fixedly connected to the first plate 110 or the second plate 120.

[0072] 6 and 9, in some embodiments of the present invention, the first plate 110 is provided with a third through hole 116 and a third annular wall 117, the third annular wall 117 is provided on the outer periphery of the third through hole 116, and the third annular wall 117 can be formed by pressing. The third annular wall 117 extends toward the second plate 120 and abuts against the second plate 120, so that the first plate 110 is supported by the second plate 120 through the third annular wall 117, and the third annular wall 117 closes the cavity 140 to prevent foreign matter from entering the cavity 140.

[0073] 9, the second plate 120 is provided with a fourth through hole 125 and a fourth annular wall 126. The fourth annular wall 126 is provided on the outer periphery of the fourth through hole 125 and extends in a direction away from the first plate 110. The fourth annular wall 126 can be formed by pressing. The diameter of the third through hole 116 is larger than the diameter of the fourth through hole 125. Large This ensures that the third annular wall 117 can stably support the second plate 120.

[0074] 9, the support leg 300 is a hollow structure with an open top. The support leg 300 is fitted into the fourth annular wall 126, which is convenient to install and lighter in weight. The support leg 300 is a cone structure, and the outer diameter gradually decreases along the direction away from the support plate 200. The third through hole 116, the fourth through hole 125 and the upper end opening of the support leg 300 are perforated, so that when the pallet 1000 is placed, the support legs 300 of the adjacent pallets 1000 can be inserted into each other, so that the support plates 200 of the adjacent pallets 1000 can be stacked, which greatly reduces the space required for storing the pallets 1000.

[0075] 9, in some embodiments of the present invention, the hollow support leg 300 includes a bottom wall 310 and a peripheral wall 320, and one end of the peripheral wall 320 is connected to the bottom wall 310, which not only makes the connection of the support leg 300 more stable, but also increases the friction force of the contact surface of the support leg 300. The other end of the peripheral wall 320 is connected to the outside of the fourth annular wall 126, which makes the connection between the support leg 300 and the support plate 200 more reliable, and improves the connection reliability of the pallet 1000.

[0076] In addition, in some embodiments of the present invention, an attachment edge 330 that abuts against the second plate 120 is provided at one end of the peripheral wall 320 away from the bottom wall 310, which further improves the connection stability between the support leg 300 and the second plate 120, improves the attachment efficiency between the support leg 300 and the second plate 120, and makes the structure of the pallet 1000 more reliable.

[0077] 9, the bottom wall 310 is provided with a fifth through hole 340, which communicates with the third through hole 116, the fourth through hole 125 and the chamber of the support leg 300, thereby realizing drainage between the contact surface of the first plate 110 and the support leg 300, preventing water from accumulating in the support leg 300, and improving the service life of the pallet 1000.

[0078] Continuing to refer to FIG. 9 , in some embodiments of the present invention, the support leg 300 is manufactured by a one-piece molding, such as by pressing or injection molding, so that the structure is more stable, the processing is easier, the weight is lighter, and the installation and replacement are more convenient.

[0079] As shown in FIG. 6, in some embodiments of the present invention, the height between the bottom surface of the support plate 200 and the bottom surface of the support leg 300 is arranged to allow the forks of a forklift to be inserted, which makes it convenient to transport the pallet 1000 by forklift, improves transportation efficiency, and improves transportation safety.

[0080] A rack according to an embodiment of the present invention is used to stock luggage. The rack according to this embodiment includes a support plate for supporting luggage, and the support plate includes the support unit 100 according to the above embodiment. The support plate according to the embodiment of the present invention uses the support unit 100 according to the first embodiment, and the support unit 100 includes a first plate 110 and a second plate 120 spaced apart from each other. A plurality of first annular walls 111 on the first plate 110 are fitted into the outer sides of a plurality of second annular walls 121 on the second plate 120, and the first annular walls 111 and the second annular walls 121 are fitted together to connect the first and second plates 110 and 120. This provides a firm connection between the first and second plates 110 and improves the stability of the connection between the first and second plates 110 and 120. The first annular wall 111 and the second annular wall 121 are connected to form a support structure 130 for supporting the first plate 110 and the second plate 120, and the support structure 130 is disposed between the first plate 110 and the second plate 120 at a distance, so that the support unit 100 can be combined with the first plate 110 and the second plate 120 to form a stable support unit 100, so that the support unit 100 has the advantages of high structural strength and strong load-bearing capacity. Cavities are formed between the first plate 110 and the second plate 120 and in the support structure 130, which ensures the structural strength of the support unit 100 and effectively reduces the weight of the support unit 100.

[0081] The rack adopts all the technical means of the support unit 100 of the above embodiment, and therefore has at least all the useful effects of the technical means of the above embodiment, and detailed description thereof will be omitted here.

[0082] The fence of the embodiment of the present invention is used to surround the perimeter of a site such as a construction site or an interior construction site. The fence of the embodiment includes a fence and a bracket. The fence is supported and positioned at both ends by brackets, and includes the support unit 100 of the above embodiment. The fence of the embodiment of the present invention uses the support unit 100 of the embodiment of the first aspect, and the support unit 100 is provided with a first plate 110 and a second plate 120 at an interval, and a plurality of first annular walls 111 provided on the first plate 110 are fitted correspondingly to the outside of a plurality of second annular walls 121 provided on the second plate 120, and the first annular walls 111 and the second annular walls 121 are fitted and connected. This realizes a firm connection between the first plate 110 and the second plate 120, and improves the stability of the connection between the first plate 110 and the second plate 120. The first annular wall 111 and the second annular wall 121 are connected to form a support structure 130 for supporting the first plate 110 and the second plate 120, and the support structure 130 is disposed between the first plate 110 and the second plate 120 at a distance, so that the support unit 100 can be combined with the first plate 110 and the second plate 120 to form a stable support unit 100, so that the support unit 100 has the advantages of high structural strength and strong load-bearing capacity. Cavities are formed between the first plate 110 and the second plate 120 and in the support structure 130, which ensures the structural strength of the support unit 100 and effectively reduces the weight of the support unit 100.

[0083] The enclosure adopts all the technical means of the support unit 100 of the above embodiment, and therefore has at least all the useful effects of the technical means of the above embodiment, and detailed description thereof will be omitted here.

[0084] As shown in Figure 10, the manufacturing method of a pallet according to an embodiment of the present invention is used to produce a pallet made of metal, which has great structural strength, strong loading capacity, and the metal material can be recycled, which is energy-saving and environmentally friendly. The manufacturing method of the pallet according to the embodiment of the present invention includes the following steps:

[0085] S1001: Provide a first metal plate 1800. The dimensions of the first metal plate 1800 are selected according to the dimensions of the support surface of the pallet. The thickness and material of the first metal plate 1800 are selected according to the load carrying requirements of the pallet. The first metal plate 1800 of the embodiment of the present invention is a sheet metal part that is high in strength, lightweight, and easy to process.

[0086] S1002: A plurality of first through holes 1801 are machined at intervals along the length and width directions of the first metal plate 1800. Referring to FIG. 18, the plurality of first through holes 1801 are provided to be distributed in a matrix or uniformly distributed. The plurality of first through holes 1801 can be machined by a method such as punching. For example, the plurality of first through holes 1801 are provided in a plurality of rows at intervals along the length direction of the first metal plate 1800, and a plurality of first through holes 1801 are provided at intervals along the width direction of the first metal plate 1800 for each row, and corresponding first through holes 1801 of two adjacent rows are arranged offset from each other.

[0087] S1003: Press the first annular wall 1802 along the positions of the first through holes 1801. Referring to FIG. 18 and FIG. 19, the first annular wall 1802 can be formed by processing the first metal plate 1800 by a processing method such as pressing. The first annular wall 1802 is formed on the outer periphery of the first through holes 1801, and forms a hollow, approximately cylindrical structure so as to extend along a direction perpendicular to the first metal plate 1800 or to the direction of the second metal plate 1900. After completing the pressing of the first annular wall 1802, the hole diameter formed by the first annular wall 1802 is larger than the hole diameter of the first through hole 1801 processed in step S1002, and the inner hole formed by being surrounded by the first annular wall 1802 contributes to the drainage of the first metal plate 1800 and increases the overall strength of the first metal plate 1800.

[0088] S1004: Provide a second metal plate 1900. The dimensions of the second metal plate 1900 are selected according to the dimensions of the support surface of the pallet. The thickness and material of the second metal plate 1900 are selected according to the load-carrying requirements of the pallet. In order to improve production efficiency, the dimensions of the second metal plate 1900 are basically the same as those of the first metal plate 1800. Of course, the parameters of the second metal plate 1900 (e.g., dimensions, thickness, material) may be different from those of the first metal plate 1800, and can be specifically designed according to the usage demand. Note that, as the second metal plate 1900 of the embodiment of the present invention, a sheet metal part with high strength, light weight, and easy processing is adopted.

[0089] S1005: A plurality of second through holes 1901 are machined at intervals along the length and width directions of the second metal plate 1900. Referring to FIG. 18, the plurality of second through holes 1901 are distributed in a matrix or uniformly. The arrangement of the second through holes 1901 is the same as the arrangement of the first through holes 1801. The plurality of second through holes 1901 can be machined by a method such as punching. For example, the plurality of second through holes 1901 are arranged in a plurality of rows at intervals along the length direction of the second metal plate 1900, and a plurality of second through holes 1901 are arranged at intervals for each row along the width direction of the second metal plate 1900, and the corresponding second through holes 1901 of two adjacent rows are arranged offset from each other.

[0090] S1006: Press the second annular wall 1902 along the positions of the second through holes 1901. Referring to FIG. 18 and FIG. 19, the second annular wall 1902 can be formed by processing the second metal plate 1900 by a processing method such as pressing. The second annular wall 1902 is formed on the outer periphery of the second through holes 1901, and forms a hollow, approximately cylindrical structure so as to extend along a direction perpendicular to the second metal plate 1900 and toward the first metal plate 1800. After completing the pressing of the second annular wall 1902, the hole diameter formed by the second annular wall 1902 is larger than the hole diameter of the second through hole 1901 processed in step S1005, and the inner hole surrounded by the second annular wall 1902 contributes to the drainage of the second metal plate 1900 and increases the overall strength of the second metal plate 1900.

[0091] S1007: The first metal plate 1800 and the second metal plate 1900 are placed in a mirror symmetrical manner, and the first annular wall 1802 and the second annular wall 1902 are aligned. Referring to Fig. 19 and Fig. 20, the second metal plate 1900 on which the second annular wall 1902 is formed can be turned upside down so as to be placed in a mirror symmetrical manner with respect to the first metal plate 1800, and the second annular wall 1902 in the second metal plate 1900 and the first annular wall 1802 in the first metal plate 1800 are aligned one-to-one, thereby improving the accuracy of aligning and attaching the first metal plate 1800 and the second metal plate 1900, and reducing the difficulty of production and processing.

[0092] The order of the processing steps of the first metal plate 1800 and the second metal plate 1900 may be interchanged, and is not specifically limited here.

[0093] S1008: The first metal plate 1800 and the second metal plate 1900 are joined together so that the second annular wall 1902 is fitted to the outside of the first annular wall 1802 and is in close contact with the first annular wall 1802. With reference to FIG. 21 and FIG. 22, the close contact between the first annular wall 1802 and the second annular wall 1902 can be understood as a connection manner in which no relative movement occurs between the first annular wall 111 and the second annular wall 121. The first annular wall 111 and the second annular wall 121 may be connected by interference fit or intermediate fit, or may be connected by complete or partial joint. The close contact between the first annular wall 1802 and the second annular wall 1902 can realize a stable connection between the first metal plate 1800 and the second metal plate 1900, improving the overall stability of the pallet. The first annular wall 1802 and the second annular wall 1902 are connected to form a support structure, which may be a hollow tubular structure and can support the first metal plate 1800 and the second metal plate 1900, thereby joining the first metal plate 1800 and the second metal plate 1900 to form a stable pallet support surface and improve the structural strength of the pallet. As the support structure, a structure in which the second annular wall 1902 is fitted to the outside of the first annular wall 1802 can be formed to form a two-layer structure, improving the strength of the support structure and further improving the loading capacity of the pallet.

[0094] S1009: Provide a support leg. The support leg is generally made of metal material. In order to reduce the weight of the entire pallet and make it easier for workers to carry, the support leg is generally made of sheet metal parts. For example, the support leg may be a pressed part, that is, processed into a hollow structure, thereby meeting the strength requirements of the structure and effectively reducing the weight. The support leg may also be made of lightweight materials with a certain strength, such as plastic materials or wood.

[0095] S1010: Fixedly connect the support leg to the second metal plate 1900. A plurality of support legs are provided, and the specific number is designed based on parameters such as the load-carrying requirements of the pallet and the load-carrying capacity of a single support leg. For example, nine support legs are provided, eight of which are spaced apart along the outer periphery of the support surface of the pallet, and the remaining one is provided at the center of the support surface of the pallet.

[0096] In the manufacturing method of a pallet in an embodiment of the present invention, a first metal plate 1800 is machined to have a first annular wall 1802, a second metal plate 1900 is machined to have a second annular wall 1902, and the first metal plate 1800 and the second metal plate 1900 are joined in a mirror symmetrical manner so that the second annular wall 1902 is fitted outside the first annular wall 1802 and closely adjacent to the first annular wall 1802, thereby achieving the processing of a metal pallet. The processing process is simple and production costs are reduced, and the produced pallet has high structural strength, strong loading capacity and long service life.

[0097] Referring to FIG. 11, after step S1008, the method includes the following steps.

[0098] S1101: The edge of the first annular wall 1802 is bent outward to process the first edge 1803. The first edge 1803 is formed at one end of the first annular wall 1802 that is away from the first metal plate 1800. The first edge 1803 supports the second annular wall 1902 or the second metal plate 1900, and can improve the supporting effect of the first metal plate 1800 and the second metal plate 1900. The first edge 1803 restricts the degree of freedom of the second annular wall 1902 along the axial direction, and can prevent the first metal plate 1800 and the second metal plate 1900 from coming off, which further improves the stability of the connection between the first metal plate 1800 and the second metal plate 1900, and further enhances the structural strength of the pallet.

[0099] S1102: The first edge 1803 is crimped to the second metal plate 1900. The first edge 1803 can be connected to the second metal plate 1900 by crimping, or can be welded to the second metal plate 1900, or can be riveted to the second metal plate 1900, and the specific connection manner is not specifically limited herein. The first edge 1803 can make the connection between the first metal plate 1800 and the second metal plate 1900 more stable, and the overall structure of the pallet more stable.

[0100] Referring to FIG. 12, step S1006 specifically includes the following steps:

[0101] S1201: Second annular walls 1902 are pressed along the positions of the second through holes 1901. The second annular walls 1902 are pressed to form the outer periphery of the second through holes 1901. The inner holes surrounded by the second annular walls 1902 contribute to drainage of the second metal plate 1900, and also increase the overall strength of the second metal plate 1900, improving the bending resistance of the second metal plate 1900.

[0102] S1202: A second guide edge 1904 that can be joined to the first edge 1803 is processed at the connection point between the second metal plate 1900 and the second annular wall 1902. The second guide edge 1904 and the second annular wall 1902 may be formed in a single process or in multiple steps. The second guide edge 1904 is joined to the first edge 1803, which makes the connection between the second annular wall 1902 and the first annular wall 1802 stronger, so that the force received by the pallet is more uniform, the load carrying effect is more favorable, and the first edge 1803 can better support the second annular wall 1902, improving the structural strength of the pallet. In addition, the first edge 1803 further restricts the degree of freedom of the second annular wall 1902 along the axial direction by the second guide edge 1904, thereby preventing the first metal plate 1800 and the second metal plate 1900 from coming off, further improving the stability of the connection between the first metal plate 1800 and the second metal plate 1900.

[0103] Referring to FIG. 13, step S1102 specifically includes the following steps:

[0104] S1301: Press the first edge 1803 against the second annular wall 1902 to form an engagement groove 1905 in the second annular wall 1902 to accommodate at least a portion of the first edge 1803. The first edge 1803 is engaged with the engagement groove 1905, so that the connection between the first edge 1803 and the second annular wall 1902 is more stable and reliable. Furthermore, due to the stable connection between the first edge 1803 and the second annular wall 1902, the first annular wall 1802 and the second annular wall 1902 form a stable support structure, which makes the overall structure of the pallet more stable and enhances the loading capacity.

[0105] When a second guide edge 1904 capable of joining to the first edge 1803 is machined at the connection point between the second annular wall 1902 and the second metal plate 1900, an engagement groove 1905 is formed in the second guide edge 1904. This allows the first edge 1803 to be more suitably connected to the second guide edge 1904, improving the stability of the connection between the first metal plate 1800 and the second metal plate 1900. Furthermore, by allowing the first edge 1803 to be flush with the surface of the second metal plate 1900, the stability of the pallet when transported by a forklift and the safety of use when transported by workers are improved, and safety risks during the process of using the pallet are reduced.

[0106] Referring to FIG. 14, after step S1008, the method includes the following steps.

[0107] S1401: At least a part of the first annular wall 1802 is pressed outward so that the inner diameter of the cross section of the first annular wall 1802 gradually increases along the direction away from the first metal plate 1800. To press the first annular wall 1802 outward, a method such as expansion or hole widening can be adopted, and is not specifically limited here. For example, the entire first annular wall 1802 may be pressed, or one end of the first annular wall 1802 that is away from the first metal plate 1800 may be pressed. After the first annular wall 1802 is pressed, the longitudinal section of the first annular wall 1802 is inclined with respect to the axis of the first annular wall 1802, and the angle range of the inclination can be designed to be 1 degree to 3 degrees. The longitudinal section of the first annular wall 1802 here can be understood as a section formed by cutting the first annular wall 1802 along a plane on which the axis of the first annular wall 1802 is located. Therefore, by pressing the first annular wall 1802, the connection between the first annular wall 1802 and the second annular wall 1902 can be made stronger, and the first annular wall 1802 and the second annular wall 1902 form a tapered structure, which can prevent the second metal plate 1900 from coming off the first metal plate 1800, and further improves the structural stability of the pallet, increases the structural strength of the pallet, and increases the loading capacity.

[0108] Referring to FIG. 15, step S1006 specifically includes the following steps:

[0109] S1501: Second annular walls 1902 are pressed along the positions of the second through holes 1901. The second annular walls 1902 are pressed to form the outer periphery of the second through holes 1901. The inner holes surrounded by the second annular walls 1902 contribute to drainage of the second metal plate 1900, and also increase the overall strength of the second metal plate 1900, improving the bending resistance of the second metal plate 1900.

[0110] S1502: The edge of the second annular wall 1902 is bent outward to process the second edge 1903. The second edge 1903 is formed at one end of the second annular wall 1902 that is away from the second metal plate 1900. The second edge 1903 and the second annular wall 1902 may be formed in a single process, or may be formed in a process divided into a plurality of steps. The second edge 1903 can support the first annular wall 1802 or the first metal plate 1800, and improve the supporting effect of the first metal plate 1800 and the second metal plate 1900. In addition, the second edge 1903 can be formed into an arc-shaped chamfer, so that when the first metal plate 1800 and the second metal plate 1900 are joined, the second edge 1903 has a guiding effect and can guide the first annular wall 1802 to fit inside the second annular wall 1902, making the joining of the first metal plate 1800 and the second metal plate 1900 smoother and improving assembly efficiency.

[0111] Referring to FIG. 16, step S1003 specifically includes the following steps:

[0112] S1601: First annular walls 1802 are pressed along the positions of the multiple first through holes 1801. The first annular walls 1802 are formed by pressing the outer periphery of the first through holes 1801.

[0113] S1602: A first guide edge 1804 that can be joined to a second edge 1903 is processed at a connection point between the first metal plate 1800 and the first annular wall 1802. The first guide edge 1804 and the first annular wall 1802 may be formed in a single process or in multiple steps. The first guide edge 1804 is joined to the second edge 1903, which makes the connection between the first annular wall 1802 and the second annular wall 1902 stronger, so that the force received by the pallet is more uniform, the load carrying effect is more favorable, and the second edge 1903 can better support the first annular wall 1802, improving the structural strength of the pallet.

[0114] Referring to FIG. 17, after step S1008, the method includes the following steps.

[0115] S1701: The outer periphery of the first metal plate 1800 and the outer periphery of the second metal plate 1900 are fixedly connected. The outer periphery of the first metal plate 1800 and the outer periphery of the second metal plate 1900 may be separately processed to form a folded edge that fits together to achieve a stable connection, or may be connected by a fastener such as a bolt, and the method is not specifically limited here. By fixedly connecting the outer periphery of the first metal plate 1800 and the outer periphery of the second metal plate 1900, it is possible to prevent rain or foreign objects from entering the space between the first metal plate 1800 and the second metal plate 1900 during use, which may corrode and damage the pallet. For example, when using interlocking folded edges to realize the connection between the first metal plate 1800 and the second metal plate 1900, the folded edges may be processed before the joining step of the first metal plate 1800 and the second metal plate 1900, so that the outer peripheral edge of the first metal plate 1800 and the outer peripheral edge of the second metal plate 1900 are synchronously connected in the connecting process of the first annular wall 1802 and the second annular wall 1902, and the connecting step of the outer peripheral edge of the first metal plate 1800 and the outer peripheral edge of the second metal plate 1900 may be designed before or after the connecting step of the first annular wall 1802 and the second annular wall 1902, and is not specifically limited here.

[0116] Referring to FIG. 18 , the first annular wall 1802 and the second annular wall 1902 are both formed by pressing, which is a mature process with high processing precision and high quality. Therefore, the structures of the first annular wall 1802 and the second annular wall 1902 are stable, which can ensure the structural strength of the pallet and improve the quality of the product.

[0117] As can be seen from FIG. 19 , the first through hole 1801 and the second through hole 1901 are both formed by a hole punching process, which is a simple process with a mature process, high processing quality, high processing accuracy, and high processing safety and reliability.

[0118] 18 and 19, the first through hole 1801 and the second through hole 1901 are both circular holes, which makes their processing more convenient. The cross-sectional contours of the first annular wall 1802 and the second annular wall 1902 processed from the circular holes are circular, which makes the structures of the first annular wall 1802 and the second annular wall 1902 more stable, which makes it convenient to join the first metal plate 1800 and the second metal plate 1900, and reduces the processing difficulty. Of course, the first through hole 1801 and the second through hole 1901 may be designed to have a triangular, quadrilateral, hexagonal, or other structure, and are not specifically limited here. In addition, according to the above design, the first annular wall 1802 is processed to easily form structures such as the first edge 1803 and the first guide edge 1804, and the second annular wall 1902 is processed to easily form structures such as the second edge 1903 and the second guide edge 1904.

[0119] Although the embodiments of the present invention have been described in detail above with reference to the drawings, the present invention is not limited to the above embodiments, and various modifications are possible within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. a first plate having a plurality of first annular walls spaced apart at one end; a second plate provided at a distance from the first plate, a plurality of second annular walls provided at a distance from one end of the second plate facing the first plate, the plurality of second annular walls extending toward the first plate and corresponding to the plurality of first annular walls, the second annular walls fitted to the outside of the first annular walls, and the second annular walls fitted to the first annular walls to form a support structure for supporting the first plate and the second plate, The first annular wall has a first edge extending outwardly from an end remote from the first plate; an outer diameter of the first edge is greater than an inner diameter of the second annular wall; A support unit, wherein the first edge is joined to the second plate.

2. a first plate having a plurality of first annular walls spaced apart at one end; a second plate provided at a distance from the first plate, a plurality of second annular walls provided at a distance from one end of the second plate facing the first plate, the plurality of second annular walls extending toward the first plate and corresponding to the plurality of first annular walls, the second annular walls fitted to the outside of the first annular walls, and the second annular walls fitted to the first annular walls to form a support structure for supporting the first plate and the second plate, an inner diameter of one end of the second annular wall remote from the second plate is smaller than an outer diameter of one end of the first annular wall remote from the first plate; The second annular wall has a second edge extending outwardly from one end remote from the second plate, A support unit, wherein the second edge is joined to the first plate.

3. 3. The support unit according to claim 1, wherein at least a portion of the first annular wall has an inner diameter of a cross section that gradually increases along a direction away from the first plate.

4. 3. The support unit according to claim 1, wherein the longitudinal section of the first annular wall is inclined with respect to the axis of the first annular wall, and the inclination angle is in the range of 1 to 3 degrees.

5. 3. The support unit according to claim 1 or 2, wherein the first annular wall is formed with a through groove having a cross-sectional profile that is circular, triangular, quadrilateral or hexagonal.

6. The cross-sectional profile of the through groove is circular; The inner diameter of the through groove is in the range of 35 mm to 45 mm; The support unit according to claim 5, characterized in that the distance between the axes of the adjacent through grooves is in the range of 40 mm to 60 mm.

7. The first annular wall has a first edge extending outwardly from an end remote from the first plate; The support unit according to claim 2 , wherein the first edge is joined to the second plate.

8. A second guide edge is provided at a connection point between the second plate and the second annular wall, An engagement groove is formed in the second guide edge, 8. The support unit according to claim 1, wherein the first edge is engaged with the engagement groove.

9. The support unit according to claim 8, wherein the first edge has a lowest point in a plane in which the second plate lies.

10. the first plate is made of a metal material, and the first annular wall and the first plate are integrally molded products; 3. The support unit according to claim 1, wherein the second plate is made of a metal material, and the second annular wall and the second plate are integrally molded.

11. The second annular wall has a second edge extending outwardly from one end remote from the second plate, The support unit according to claim 1 , wherein the second edge is joined to the first plate.

12. A first guide edge is provided at a connection point between the first plate and the first annular wall, The support unit according to claim 2 or 11, wherein the second edge is joined to the first guide edge.

13. The first guide edge has an arc-shaped cross section, The support unit according to claim 12, wherein the second edge has an arc-shaped cross section that fits the first guide edge.

14. 3. The support unit according to claim 1, wherein a cavity having a depth in the range of 12 mm to 20 mm is formed between the first plate and the second plate.

15. A pallet comprising a support unit according to claim 1 or 2.

16. The support unit forms a support plate, and a support leg is provided at a bottom of the support plate; a third through hole and a third annular wall are provided in the first plate, the third annular wall is provided on an outer periphery of the third through hole, extends toward the second plate, and abuts against the second plate; a fourth through hole and a fourth annular wall are provided in the second plate, the fourth annular wall is provided on an outer periphery of the fourth through hole and extends in a direction away from the first plate; The support leg has a hollow cone structure with an open upper end, is fitted into the fourth annular wall, and has an outer diameter that gradually decreases along a direction away from the support plate; 16. The pallet according to claim 15, wherein the diameter of the third through hole is larger than the diameter of the fourth through hole.

17. Providing a first plate; Drilling a plurality of first through holes at intervals along the length and width of the first plate; Pressing a hollow cylindrical first annular wall along the positions of the plurality of first through holes; providing a second plate; Drilling a plurality of second through holes at intervals along the length and width of the second plate; Pressing a hollow cylindrical second annular wall along the positions of the second through holes; placing the first plate and the second plate in a mirror image and aligning the first annular wall and the second annular wall; joining the first plate and the second plate such that the second annular wall is fitted to the outside of the first annular wall and is in close contact with the first annular wall; providing a support leg; and fixedly connecting the support legs to the second plate.

18. After the step of joining the first plate and the second plate such that the second annular wall is fitted to the outside of the first annular wall and is in close contact with the first annular wall, 18. A method for manufacturing a pallet as claimed in claim 17, further comprising the step of pressing at least a portion of the first annular wall outwardly such that an inner diameter of a cross section of the first annular wall gradually increases along a direction away from the first plate.

19. A rack comprising a support plate having the support unit according to claim 1 or 2.

20. 3. An enclosure comprising a fence comprising a support unit according to claim 1 or 2.

Images