A tray facilitating maintenance

Abstract

The application provides a tray convenient to maintain, which comprises: a plurality of top horizontal beams and a plurality of top longitudinal beams which are arranged in a grid structure; a plurality of support columns which are arranged at the intersections of the top horizontal beams and the top longitudinal beams to support the top horizontal beams and the top longitudinal beams, the top surfaces of the plurality of support columns are provided with first limiting grooves which are arranged in the same direction as the top horizontal beams and used for accommodating the top horizontal beams, and the top surfaces of the plurality of support columns are also provided with second limiting grooves which are arranged in the same direction as the top longitudinal beams and used for accommodating the top longitudinal beams, and the bottom surfaces of the plurality of support columns are further provided with third limiting grooves; and a bottom connecting beam which is arranged in the third limiting grooves to support and fixedly connect the support columns.

Description

Technical Field

[0001] This application relates to the field of warehousing and logistics vehicle technology, and in particular to a pallet that is easy to maintain. Background Technology

[0002] A pallet is a movable cargo-carrying platform that facilitates the transport of goods loaded on it. Therefore, it is widely used in production, transportation, warehousing, and distribution, and plays a vital role in modern logistics in conjunction with forklifts. A pallet typically consists of upper and lower support sections. The upper support section carries the goods, while the lower support section contacts the ground and has grooves for forklift operation. The components of the upper and lower support sections are usually directly connected using nails, screws, etc. The protruding caps of these connectors can easily scratch the goods. Pallets made of wood have low structural strength and poor durability. When pallet components are connected with nails, the smooth surface of the nails provides limited vertical tightening force, making components prone to detachment. When pallet components are connected with screws, although the threads on the screw shank provide greater vertical tightening force, they are prone to damaging pallet components, resulting in high maintenance costs. The shapes and structures of the components in the upper and lower support sections are different, and corresponding accessories are not interchangeable, increasing daily use and maintenance costs.

[0003] Therefore, it is hoped that a more effective and reliable technical solution can be provided to solve the problems existing in the prior art. Summary of the Invention

[0004] The technical problem this application aims to solve is that in the prior art, pallet maintenance costs are high, and the protruding caps of the connectors can easily scratch goods.

[0005] This application provides a pallet that is easy to maintain, comprising: a plurality of crossbeams and longitudinal beams forming a grid structure; a plurality of support columns disposed at the intersections of the crossbeams and longitudinal beams to support the crossbeams and longitudinal beams, wherein the top surfaces of the support columns are provided with a first limiting groove co-directed with the crossbeams for accommodating the crossbeams and a second limiting groove co-directed with the longitudinal beams for accommodating the longitudinal beams, and the bottom surfaces of the support columns are provided with a third limiting groove; and a bottom connecting beam disposed in the third limiting groove to support and connect and fix the support columns.

[0006] In some embodiments of this application, the depth of the second limiting groove is greater than the depth of the first limiting groove.

[0007] In some embodiments of this application, the width of the top longitudinal beam matches the width of the second limiting groove, the top longitudinal beam is fully embedded in the second limiting groove, and the top surface of the top longitudinal beam is flush with the bottom surface of the first limiting groove.

[0008] In some embodiments of this application, the top crossbeam includes a flat plate and a boss located in the middle of the flat plate. The width of the boss matches the width of the first limiting groove. The boss is embedded in the first limiting groove and abuts against the top longitudinal beam. The flat plates on both sides of the boss abut against the top surface of the support column.

[0009] In some embodiments of this application, the support column has a threaded hole in the middle, and the top horizontal beam and the top vertical beam have first through holes corresponding to the threaded hole. The top horizontal beam and the top vertical beam are fixedly connected to the support column through a first threaded connector, the first through hole, and the threaded hole.

[0010] In some embodiments of this application, the threaded hole is formed by a long nut.

[0011] In some embodiments of this application, the support column has a through-hole in the middle, and the long nut is installed in the through-hole.

[0012] In some embodiments of this application, the boss of the top crossbeam is a hollow structure, and the nut of the first threaded connector is recessed into the boss.

[0013] In some embodiments of this application, the bottom connecting beam is fixedly connected to the support column via a second threaded connector and a threaded hole.

[0014] In some embodiments of this application, the third limiting groove has the same depth as the first limiting groove, and the bottom connecting beam has the same structure and size as the top crossbeam.

[0015] In some embodiments of this application, the depth of the third limiting groove is greater than or equal to the height of the top longitudinal beam, and the bottom connecting beam has the same structure and dimensions as the top longitudinal beam.

[0016] In some embodiments of this application, the top longitudinal beam is a hollow column structure.

[0017] In some embodiments of this application, the third limiting groove is in the same direction as the first limiting groove, and the bottom connecting beam is in the same direction as the top crossbeam.

[0018] In some embodiments of this application, the third limiting groove is in the same direction as the second limiting groove, and the bottom connecting beam is in the same direction as the top longitudinal beam.

[0019] In some embodiments of this application, the support column further includes a plurality of uniformly distributed material reduction holes extending from the top surface of the support column to the bottom surface of the support column.

[0020] In some embodiments of this application, the tray further includes: a plurality of reinforcing beams in the same direction as the top crossbeam, located between adjacent top crossbeams and connected to the top longitudinal beam.

[0021] In some embodiments of this application, the structure and dimensions of the reinforcing beam are exactly the same as those of the top crossbeam.

[0022] In some embodiments of this application, at least one of the top crossbeam, top longitudinal beam, support column, and bottom connecting beam is integrally formed.

[0023] In some embodiments of this application, at least one of the top crossbeam, top longitudinal beam, and bottom connecting beam is formed of polyurethane material, and the support column is formed of polypropylene material.

[0024] The pallet provided in this application embodiment is easy to maintain. It uses support columns and threaded connections to connect the top crossbeam, top longitudinal beam, and bottom connecting beam. This avoids damage to the top crossbeam, top longitudinal beam, and bottom connecting beam caused by the threads of the threaded connectors. Normally, only the support columns need to be replaced, reducing maintenance costs. The support columns also act as shock absorbers, preventing damage to the goods they carry. The top crossbeam, reinforcing beam, and bottom connecting beam use the same design, making their components interchangeable. Manufacturers only need to produce one type of component, reducing manufacturing costs. Users also reduce the types and quantities of spare parts they need to stock, lowering daily use and maintenance costs. The nuts of the threaded connectors are hidden in the bosses, preventing contact with goods or the lower pallet and thus avoiding damage. The top crossbeam, top longitudinal beam, and bottom connecting beam are respectively limited by a first limiting groove, a second limiting groove, and a third limiting groove, ensuring accurate alignment between the top crossbeam, reinforcing beam, and bottom connecting beam and the support columns. This helps reduce assembly difficulty and enables rapid alignment and assembly. Attached Figure Description

[0025] The following accompanying drawings describe in detail the exemplary embodiments disclosed in this application. The same reference numerals denote similar structures in several views of the drawings. Those skilled in the art will understand that these embodiments are non-limiting and exemplary, and the drawings are for illustrative purposes only and are not intended to limit the scope of this application. Other embodiments may similarly fulfill the intent of this application. It should be understood that the drawings are not drawn to scale.

[0026] in:

[0027] Figure 1 This is a schematic diagram of the overall structure of the tray according to some embodiments of this application;

[0028] Figure 2This is a partial exploded view of the tray according to some embodiments of this application;

[0029] Figure 3 This is a partial structural schematic diagram of the top crossbeam of a pallet according to some embodiments of this application;

[0030] Figure 4 This is a schematic diagram of the top surface structure of the support column of the pallet according to some embodiments of this application;

[0031] Figure 5 This is a partial enlarged view of the top surface of the tray according to some embodiments of this application;

[0032] Figure 6 This is a partial structural schematic diagram of the bottom connecting beam of the pallet according to some embodiments of this application;

[0033] Figure 7 This is a schematic diagram of the bottom structure of the support column of the pallet according to some embodiments of this application;

[0034] Figure 8 This is a partial enlarged view of the bottom surface of the tray according to some embodiments of this application;

[0035] Figure 9 This is a schematic diagram of the longitudinal section structure of the support column of the pallet according to some embodiments of this application. Detailed Implementation

[0036] The following description provides specific application scenarios and requirements for this application, intended to enable those skilled in the art to make and use the content of this application. Various partial modifications to the disclosed embodiments will be apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments and applications without departing from the spirit and scope of this application. Therefore, this application is not limited to the embodiments shown, but rather to the widest scope consistent with the claims.

[0037] The technical solution of this application will be described in detail below with reference to the embodiments and accompanying drawings.

[0038] refer to Figure 1As shown, some embodiments of this application provide a pallet that is easy to maintain, including: a plurality of intersecting top crossbeams 1 and top longitudinal beams 2 forming a grid structure, the top crossbeams 1 and top longitudinal beams 2 together constituting an upper support, the top crossbeams 1 contacting the goods and serving to support the goods, the top longitudinal beams 2 located below the top crossbeams 1 supporting the top crossbeams 1; a plurality of support columns 3, disposed at the intersection of the top crossbeams 1 and top longitudinal beams 2 to support the top crossbeams 1 and top longitudinal beams 2; and a bottom connecting beam 4, disposed below the support columns 3 to support and connect and fix the support columns 3, the bottom connecting beam 4 constituting a lower support, the bottom connecting beam 4 contacting the ground. When multiple pallets are stacked, the bottom connecting beam 4 of the upper pallet contacts the top crossbeam 1 of the lower pallet, and the groove between two adjacent bottom connecting beams 4 serves to facilitate forklift operation. It should be noted that, in this application, "top" refers to the side of the pallet that carries the goods when it is working and the direction it represents, and "bottom" refers to the side of the pallet that faces the bottom when it is working and the direction it represents.

[0039] Continue to refer to Figure 1 As shown, in some embodiments of this application, the tray further includes: a plurality of reinforcing beams 5 in the same direction as the top crossbeam 1, located between adjacent top crossbeams 1, and connected to the top longitudinal beam 2. The reinforcing beams 5 are used to increase the grid density, assist the top crossbeam 1, and improve the support capacity and strength of the upper support column.

[0040] In some embodiments of this application, the structure, dimensions, and materials of the reinforcing beam 5 are exactly the same as those of the top crossbeam 1. The reinforcing beam 5 and the top crossbeam 1 adopt the same design, and their components are interchangeable, reducing the types of pallet parts and thus lowering manufacturing costs. Users also correspondingly reduce the types and quantities of parts they need to stock, lowering daily use and maintenance costs.

[0041] Continue to refer to Figure 1 As shown, in some embodiments of this application, the number of top crossbeams 1 is 3, the number of top longitudinal beams 2 is 5, the number of support columns 3 is 15, the number of bottom connecting beams 4 is 3, and the number of reinforcing beams 5 is 2.

[0042] In some embodiments of this application, at least one of the top crossbeam 1, top longitudinal beam 2, reinforcing beam 5, support column 3, and bottom connecting beam 4 is integrally formed. The main components all adopt an integrally formed structure, which is relatively simple in structure and assembly method, further enhancing the compactness of the component structure and increasing the component strength.

[0043] In some embodiments of this application, at least one of the top crossbeam 1, top longitudinal beam 2, reinforcing beam 5, support column 3, and bottom connecting beam 4 is formed of polyurethane (PU). PU has a specific gravity of 1.2-1.3 g / cm³. 3 It features high density, high strength, high toughness, and high wear resistance, which can significantly enhance the durability of the pallet.

[0044] In some embodiments of this application, the support column 3 is made of polypropylene (PP). PP has a specific gravity of 0.9-0.91 g / cm³. 3 It has the advantages of being lightweight, tough, and chemically resistant, which helps to enhance the shock absorption performance of the support column 3.

[0045] In some embodiments of this application, the top longitudinal beam 2 is a hollow column structure. The hollow structure reduces material usage, saves costs, reduces pallet weight, and decreases the weight occupied during freight transport.

[0046] refer to Figures 2 to 5 As shown, the top surfaces of the plurality of support columns 3 are provided with a first limiting groove 31, which is in the same direction as the top crossbeam 1, for accommodating the top crossbeam 1, and a second limiting groove 32, which is in the same direction as the top longitudinal beam 2, for accommodating the top longitudinal beam 2. The top crossbeam 1 and the top longitudinal beam 2 are respectively disposed in the first limiting groove 31 and the second limiting groove 32 and are limited by the first limiting groove 31 and the second limiting groove 32, which improves the stability of the top crossbeam 1 and the top longitudinal beam 2, while also improving the alignment accuracy of the top crossbeam 1 and the top longitudinal beam 2 during assembly and reducing the assembly difficulty.

[0047] refer to Figure 3 As shown, in some embodiments of this application, the depth of the second limiting groove 32 is greater than the depth of the first limiting groove 31.

[0048] refer to Figure 5 As shown, in some embodiments of this application, the width of the top longitudinal beam 2 matches the width of the second limiting groove 32, such that the top longitudinal beam 2 is precisely embedded in the second limiting groove 32 in the width direction and is limited and fixed in the width direction. In the height direction, the top longitudinal beam 2 is completely embedded in the second limiting groove 32 (i.e., the top surface of the top longitudinal beam 2 is lower than the top surface of the second limiting groove 32), specifically, the top surface of the top longitudinal beam 2 is flush with the bottom surface of the first limiting groove 31.

[0049] refer to Figure 3 and Figure 5As shown, in some embodiments of this application, the top crossbeam 1 includes a flat plate 11 and a boss 12 located in the middle of the flat plate 11. The width of the boss 12 matches the width of the first limiting groove 31, so that the boss 12 is precisely embedded in the first limiting groove 31 in the width direction and is limited and fixed in the width direction. The boss 12 is embedded in the first limiting groove 31 and abuts against the top surface of the top longitudinal beam 2, thereby limiting and fixing the top longitudinal beam 2 in the height direction. The flat plates 11 on both sides of the boss 12 abut against the top surface of the support column 3.

[0050] refer to Figures 2 to 5 As shown, in some embodiments of this application, the support column 3 has a threaded hole 34 penetrating its center, and the top crossbeam 1 and top longitudinal beam 2 have first through holes 14 corresponding to the threaded hole 34. The top crossbeam 1 and top longitudinal beam 2 are fixedly connected to the support column 3 via a first threaded connector 13, the first through hole 14, and the threaded hole 34. The first through hole 14 is a common round hole, while the threaded hole 34 is a threaded structure. Therefore, the threaded connection portion in this application is located in the support column 3, and the top crossbeam 1 and top longitudinal beam 2 do not have threaded structures, which can prevent the threads from damaging the top crossbeam 1 and top longitudinal beam 2. If the connection structure between the first threaded connector 13 and the support column 3 is damaged, only the first threaded connector 13 or the support column 3 needs to be replaced, reducing maintenance costs. The threaded hole 34, the first through hole 14, and the first threaded connector 13 are all set in the vertical direction. The first threaded connector 13 passes through the first through hole 14 from top to bottom and is threaded to the threaded hole 34, providing vertical tension to the support column 3, the top horizontal beam 1, and the top vertical beam 2, thereby improving the stability of the connection structure.

[0051] refer to Figure 2 and Figure 9 As shown, in some embodiments of this application, the threaded hole 34 is formed by a long nut 35. Specifically, in some embodiments of this application, the support column 3 has a through-hole in its middle, and the long nut 35 is installed in the through-hole. Using the long nut 35 to form the threaded hole 34 for threaded connection with the first threaded connector 13 allows for easy maintenance when the threaded connection is damaged; only the long nut 35 or the first threaded connector 13 needs to be replaced.

[0052] refer to Figure 5 As shown, in some embodiments of this application, the boss 12 of the top crossbeam 1 is a hollow structure, and the nut of the first threaded connector 13 is recessed into the boss 12. In the technical solution of this application, the nuts of each threaded connector are recessed into the corresponding boss, do not protrude from the pallet surface, and will not damage the goods or the workers.

[0053] refer to Figure 4 As shown, in some embodiments of this application, the support column 3 further includes a plurality of evenly distributed material-reducing holes 36 extending from the top surface of the support column 3 to the bottom surface of the support column 3. The material-reducing holes 36 can reduce material usage, save costs, reduce the weight of the pallet, and reduce the weight occupied by freight transportation.

[0054] In some embodiments of this application, the ratio of the cross-sectional area of ​​the plurality of material-reducing holes 36 to the cross-sectional area of ​​the support column 3 is 30-50%. The support column 3 needs to have sufficient strength to provide support; therefore, the number of material-reducing holes 36 cannot be excessive to avoid insufficient strength and breakage of the support column 3. According to the applicant's tests, when the ratio of the cross-sectional area of ​​the plurality of material-reducing holes 36 to the cross-sectional area of ​​the support column 3 is in the range of 30-50%, it ensures that the support column 3 has sufficient strength, and the material used for the support column 3 is minimized.

[0055] refer to Figure 2 and Figures 6 to 8 As shown, the bottom surface of the plurality of support columns 3 is also provided with a third limiting groove 33, and the bottom connecting beam 4 is disposed in the third limiting groove 33 to support and connect and fix the support column 3.

[0056] In some embodiments of this application, the bottom connecting beam 4 is fixedly connected to the support column 3 via a second threaded connector 43 and the threaded hole 34. (See reference) Figure 9 As shown, the second threaded connector 43 and the first threaded connector 13 share the threaded hole 34. As long as the lengths of the second threaded connector 43 and the first threaded connector 13 are properly set to avoid insufficient depth of the threaded hole 34, this method can improve the alignment accuracy of the second threaded connector 43 and the first threaded connector 13, improve the alignment accuracy of the top and bottom surfaces of the support column 3, and improve the alignment accuracy of the upper and lower support columns.

[0057] In some embodiments of this application, the third limiting groove 33 has the same depth as the first limiting groove 31, and the bottom connecting beam 4 has the same structure and size as the top crossbeam 1. Specifically, referring to the top crossbeam 1, the bottom connecting beam 4 includes a flat plate 41 and a boss 42 located in the middle of the flat plate 41. The width of the boss 42 matches the width of the third limiting groove 33, so that the boss 42 is precisely embedded in the third limiting groove 33 in the width direction and is limited and fixed in the width direction. The boss 42 is embedded in the third limiting groove 33, and the flat plates 41 on both sides of the boss 42 abut against the bottom surface of the support column 3. The bottom connecting beam 4 is provided with a second through hole 44 corresponding to the threaded hole 34. The second through hole 44 is a normal round hole, while the threaded hole 34 is a threaded structure. Therefore, the threaded connection part in this application is located in the support column 3, and the bottom connecting beam 4 does not have a threaded structure, which can avoid the thread from damaging the bottom connecting beam 4. If the connection structure between the second threaded connector 43 and the support column 3 is damaged, only the second threaded connector 43 or the support column 3 needs to be replaced, reducing maintenance costs. The threaded hole 34, the second through hole 44, and the second threaded connector 43 are all vertically oriented. The second threaded connector 43 passes through the second through hole 44 from bottom to top and is threaded into the threaded hole 34, providing vertical tension to the support column 3 and the bottom connecting beam 4, thereby improving the stability of the connection structure. The nut of the second threaded connector 43 is recessed into the boss 42 and does not protrude from the surface of the plate 41. The bottom connecting beam 4 and the top crossbeam 1 adopt the same design, and their components are interchangeable. Manufacturers only need to produce one type of component, which helps reduce manufacturing costs; users also reduce the types and quantities of spare parts they need to stock, lowering daily use and maintenance costs.

[0058] In some other embodiments of this application, in order to further improve the versatility of the accessories, the first threaded connector 13 and the second threaded connector 43 also adopt the same design, that is, the shape, size and structure are exactly the same, so that they can be used interchangeably, reducing the manufacturing cost of the manufacturer and the maintenance cost of the user.

[0059] In some other embodiments of this application, the depth of the third limiting groove 33 is greater than or equal to the height of the top longitudinal beam 2, and the bottom connecting beam 4 has the same structure and size as the top longitudinal beam 2.

[0060] In some embodiments of this application, as shown in the accompanying drawings, the third limiting groove 33 is in the same direction as the first limiting groove 31, and the bottom connecting beam 4 is in the same direction as the top crossbeam 1.

[0061] In some other embodiments of this application, unlike those shown in the accompanying drawings, the third limiting groove 33 is in the same direction as the second limiting groove 32, and the bottom connecting beam 4 is in the same direction as the top longitudinal beam 2.

[0062] To further illustrate the maintenance-friendly tray provided in this application, this application also provides an assembly method for the tray. This method is based on the tray described above. First, the second threaded connector 43 is threaded through the second through hole 44 of the bottom connecting beam 4 and connected to the threaded hole 34 on the bottom surface of the support column 3 to assemble the bottom surface of the support column 3 and the bottom connecting beam 4. Then, the first threaded connector 13 is threaded through the first through hole 14 of the top crossbeam 1 and the top longitudinal beam 2 and connected to the threaded hole 34 on the top surface of the support column 3 to assemble the top surface of the support column 3 with the top crossbeam 1 and the top longitudinal beam 2. The method specifically includes the following steps:

[0063] Step 1: Place the support column 3 on the bottom connecting beam 4. The boss 42 of the bottom connecting beam 4 is embedded in the third limiting groove 33 of the support column 3 to achieve the limiting of the support column 3 relative to the bottom connecting beam 4. Align the second through hole 44 of the bottom connecting beam 4 with the threaded hole 34 of the support column 3.

[0064] Step 2: Connect the second threaded connector 43 to the threaded hole 34 of the support column 3 through the second through hole 44 of the bottom connecting beam 4, thereby threading the bottom connecting beam 4 to the bottom surface of the support column 3; the nut of the second threaded connector 43 is located inside the boss 42 of the bottom connecting beam 4 and does not exceed the height of the bottom surface of the bottom connecting beam 4, so as to avoid damage to the lower pallet when multiple pallets are stacked.

[0065] Step 3: Place the top longitudinal beam 2 on the support column 3. The top longitudinal beam 2 is embedded in the second limiting groove 32 of the support column 3, so that the first through hole 14 of the top longitudinal beam 2 is strictly aligned with the threaded hole 34 of the support column 3.

[0066] Step 4: Place the top crossbeam 1 on the top longitudinal beam 2, with the first through hole 14 of the top crossbeam 1 aligned with the first through hole 14 of the top longitudinal beam 2.

[0067] Step 5: The first threaded connector 13 is connected to the threaded hole 34 of the support column 3 through the first through hole 14. The nut of the first threaded connector 13 is located inside the boss 12 of the top crossbeam 1 and does not extend upward beyond the surface of the flat plate 11 of the top crossbeam 1.

[0068] Step six: Place the reinforcing beam 5 between the adjacent top crossbeam 1 and connect it to the top longitudinal beam 2 to complete the assembly of the pallet.

[0069] The pallet provided in this application embodiment is easy to maintain. It uses support columns and threaded connections to connect the top crossbeam, top longitudinal beam, and bottom connecting beam. This avoids damage to the top crossbeam, top longitudinal beam, and bottom connecting beam caused by the threads of the threaded connectors. Normally, only the support columns need to be replaced, reducing maintenance costs. The support columns also act as shock absorbers, preventing damage to the goods they carry. The top crossbeam, reinforcing beam, and bottom connecting beam use the same design, making their components interchangeable. Manufacturers only need to produce one type of component, reducing manufacturing costs. Users also reduce the types and quantities of spare parts they need to stock, lowering daily use and maintenance costs. The nuts of the threaded connectors are hidden in the bosses, preventing contact with goods or the lower pallet and thus avoiding damage. The top crossbeam, top longitudinal beam, and bottom connecting beam are respectively limited by a first limiting groove, a second limiting groove, and a third limiting groove, ensuring accurate alignment between the top crossbeam, reinforcing beam, and bottom connecting beam and the support columns. This helps reduce assembly difficulty and enables rapid alignment and assembly.

[0070] The basic concepts have been described above. Obviously, for those skilled in the art, the detailed disclosure above is merely illustrative and does not constitute a limitation of this specification. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and corrections to this application. Such modifications, improvements, and corrections are suggested in this specification, and therefore remain within the spirit and scope of the exemplary embodiments of this application.

[0071] It should be noted that, in the description of this application, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; rotating connections or sliding connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application in light of the specific circumstances. It should also be noted that the terms "front," "rear," "left," "right," "upper," "lower," "inner," "outer," "horizontal," "vertical," and "vertical" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are only for the convenience of describing this application and do not require this application to be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this application. The terms "front," "rear," "left," "right," "upper," and "lower" refer to the directions in the accompanying drawings; the terms "inner" and "outer" refer to the directions towards or away from the geometric center of a specific component; and the terms "horizontal," "vertical," and "vertical" refer to the three directions corresponding to a three-dimensional coordinate system.

[0072] Furthermore, when the terms "first," "second," "third," etc., are used in this application specification to describe various features, these terms are only used to distinguish these features and should not be construed as indicating or implying the correlation or relative importance between features or implicitly indicating the number of features indicated.

[0073] In addition, this application specification describes exemplary embodiments by referring to idealized exemplary cross-sectional views and / or plan views and / or perspective views. Therefore, differences from the illustrated shapes are foreseeable due to factors such as manufacturing techniques and / or tolerances. Therefore, exemplary embodiments should not be construed as limited to the shapes of the regions shown herein, but should include deviations in shape caused, for example, by manufacturing processes. Thus, the regions shown in the figures are substantially schematic, and their shapes are not intended to illustrate the actual shapes of the regions of the device, nor to limit the scope of the exemplary embodiments.

[0074] Furthermore, this application uses specific terms to describe embodiments of this specification. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a particular feature, structure, or characteristic related to at least one embodiment of this application. Therefore, it should be emphasized and noted that "an embodiment," "one embodiment," or "an alternative embodiment" mentioned twice or more in different locations in this application do not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this application can be appropriately combined.

[0075] Similarly, it should be noted that, in order to simplify the description of the present application and thus aid in the understanding of one or more embodiments, the foregoing description of the embodiments of the present application sometimes combines multiple features into a single embodiment, drawing, or description thereof. However, this disclosure method does not imply that the subject matter of the present application requires more features than those mentioned in the claims. In fact, the embodiments contain fewer features than all the features of the single embodiments disclosed above.

[0076] Finally, it should be understood that the embodiments described in this application are merely illustrative of the principles of the embodiments of this application. Other modifications may also fall within the scope of this application. Therefore, alternative configurations of the embodiments of this application are considered as examples and not limitations, and are regarded as consistent with the teachings of this application. Accordingly, the embodiments of this application are not limited to the embodiments explicitly described and illustrated in this application.

Claims

1. A pallet that is easy to maintain, characterized in that, include: Several intersecting horizontal and vertical beams form a grid structure at the top horizontal and vertical. A plurality of support columns are provided at the intersection of the top crossbeam and the top longitudinal beam to support the top crossbeam and the top longitudinal beam. The top surface of the plurality of support columns is provided with a first limiting groove in the same direction as the top crossbeam for accommodating the top crossbeam and a second limiting groove in the same direction as the top longitudinal beam for accommodating the top longitudinal beam. The bottom surface of the plurality of support columns is also provided with a third limiting groove. A bottom connecting beam is provided in the third limiting groove to support and connect and fix the support columns.

2. The easy-to-maintain pallet according to claim 1, characterized in that, The depth of the second limiting groove is greater than the depth of the first limiting groove, the width of the top longitudinal beam matches the width of the second limiting groove, the top longitudinal beam is completely embedded in the second limiting groove, and the top surface of the top longitudinal beam is flush with the bottom surface of the first limiting groove.

3. The easy-to-maintain pallet according to claim 2, characterized in that, The top crossbeam includes a flat plate and a boss located in the middle of the flat plate. The width of the boss matches the width of the first limiting groove. The boss is embedded in the first limiting groove and abuts against the top longitudinal beam. The flat plates on both sides of the boss abut against the top surface of the support column.

4. The easy-to-maintain pallet according to claim 3, characterized in that, The support column has a threaded hole in the middle, and the top horizontal beam and the top vertical beam have first through holes corresponding to the threaded hole. The top horizontal beam and the top vertical beam are fixedly connected to the support column through a first threaded connector, the first through hole, and the threaded hole.

5. The easy-to-maintain pallet according to claim 4, characterized in that, The threaded hole is made of a long nut, and the support column has an assembly hole that passes through the support column in the middle, and the long nut is installed in the assembly hole.

6. The easy-to-maintain pallet according to claim 5, characterized in that, The boss of the top crossbeam is a hollow structure, and the nut of the first threaded connector is recessed into the boss.

7. The easy-to-maintain pallet according to claim 6, characterized in that, The bottom connecting beam is fixedly connected to the support column through a second threaded connector and a threaded hole.

8. The easy-to-maintain pallet according to claim 7, characterized in that, The third limiting groove has the same depth as the first limiting groove, and the bottom connecting beam has the same structure and size as the top crossbeam.

9. The easy-to-maintain pallet according to claim 7, characterized in that, The depth of the third limiting groove is greater than or equal to the height of the top longitudinal beam, and the bottom connecting beam has the same structure and dimensions as the top longitudinal beam.

10. The easy-to-maintain tray according to claim 1, characterized in that, Also includes: Several reinforcing beams, aligned with the top crossbeam, are located between adjacent top crossbeams and connected to the top longitudinal beam.

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