CN111824550A

CN111824550A - Tray and connecting piece thereof

Info

Publication number: CN111824550A
Application number: CN202010663112.0A
Authority: CN
Inventors: 不公告发明人
Original assignee: Shanghai Hongyan Returnable Transit Packagings Co Ltd
Current assignee: Shanghai Hongyan Returnable Transit Packagings Co Ltd
Priority date: 2020-07-10
Filing date: 2020-07-10
Publication date: 2020-10-27
Also published as: WO2022007912A1

Abstract

The application discloses tray and connecting piece thereof. The tray includes roof, bottom plate and a plurality of stand, the roof, the stand with the bottom plate connects gradually from the top down via the connecting piece, wherein, the connecting piece includes: the main connecting piece is provided with a rod-shaped main body and a clamping hook arranged at the bottom end of the rod-shaped main body; and an auxiliary connector having a rod-shaped main body and operatively inserted into an end of the main connector where the hook is provided. The tray of this application equipment is convenient, the maintenance of being convenient for.

Description

Tray and connecting piece thereof

Technical Field

The invention relates to a logistics appliance, in particular to a tray.

Background

At present, the pallet generally comprises a wooden pallet and a plastic pallet. Plastic pallets are classified in production, and can be basically classified into the following categories: injection molding trays, blow molding trays, single layer blister molding trays, double layer blister molding trays, pressure injection molding trays, rotational molding trays. However, there are some disadvantages in different environments, cargo requirements, transportation and handling, etc. in the market:

1. the injection molding tray has the following defects: the tray has short service life, poor impact resistance, heavy weight, poor skid resistance in low-temperature refrigeration storage, brittle materials and the like, and most of the trays cannot be maintained.

2. The blow molding tray has the following defects: the pallet has low cargo strength, can not be loaded on a goods shelf, has poor local pressure resistance and poor skid resistance under high load, and can not be maintained.

3. The single-layer plastic-uptake forming tray has the following defects: the tray has low strength, cannot be loaded on a goods shelf, has poor local pressure resistance, poor skid resistance and incapability of maintenance under high load, has a plurality of groove structures on the surface, and cannot meet the requirements on sanitation, surface smoothness and other goods. The local part has uneven wall thickness.

4. The double-layer plastic-uptake forming tray has the following defects: when the hollow structure is in a high load state, the local pressure resistance is poor (static load), the skid resistance is poor, and the maintenance cannot be carried out; due to the process, the tray with a complex structure cannot be made, and the phenomenon of uneven wall thickness exists locally (tray corners).

5. The disadvantages of the injection molding tray are that: solid structure, heavy weight of tray, bad skid resistance, no maintenance, low yield and high cost.

6. The rotational molding has the following defects: the pallet has low cargo strength, can not be loaded on a goods shelf, has poor local pressure resistance, poor skid resistance, low yield and can not be maintained when in high load.

Accordingly, there is a need to provide a better pallet, e.g., for ease of maintenance, strength, and/or slip resistance.

Disclosure of Invention

The invention aims to provide a tray and a connecting piece thereof, which are convenient to maintain, high in strength and/or better in skid resistance.

To achieve the above object, according to a first aspect of the present invention, there is provided a pallet comprising a top plate, a bottom plate, and a plurality of columns, the top plate, the columns, and the bottom plate being connected in sequence from top to bottom via a connecting member, wherein the connecting member comprises:

the main connecting piece is provided with a rod-shaped main body and a clamping hook arranged at the bottom end of the rod-shaped main body; and

an auxiliary connector having a rod-shaped main body and operatively inserted into an end of the main connector where the hook is provided.

In one embodiment, the rod-shaped main body of the main connector is internally provided with a hollow channel extending along the central axis of the rod-shaped main body, the side wall defining the hollow channel is provided with a first limit stop, and the outer wall of the rod-shaped main body of the auxiliary connector is provided with a second limit stop, wherein the second limit stop is operatively abutted against the first limit stop.

In one embodiment, a spigot platform is disposed in the hollow channel of the primary connector above the first stop platform, and the secondary connector is provided with a barb, wherein the barb is between the second stop platform and an end of the secondary connector, and the barb is operable to hook over the spigot platform.

In one embodiment, a cap is arranged at the top end of the main connecting piece, the diameter of the cap is larger than that of the rod-shaped main body, and a water outlet is arranged on the side wall of the bottom end of the rod-shaped main body of the main connecting piece, and is communicated with the hollow channel and led to the outside.

In one embodiment, the hollow channel extends through the entire stem body of the primary connector and the cap.

In one embodiment, the side wall of the rod-shaped main body of the auxiliary connecting piece is provided with a dismounting groove.

In one embodiment, the bottom end of the main connecting piece is provided with two mutually separated support arms, and the outer side of each support arm is provided with the clamping hook.

In one embodiment, the primary and secondary connectors are each made of plastic.

In one embodiment, the main connector and the auxiliary connector are both made of plastic-added fiberglass.

According to a second aspect of the present invention, there is provided a connector comprising:

According to a third aspect of the present invention, there is provided a manufacturing method of a plate material having an upper plate, the manufacturing method including the steps of:

extruding a second material different from the first material to a die through a second extrusion apparatus while extruding the first material to the die through a first extrusion apparatus, so that the first material and the second material are at least partially mixed in a molten state in the die to form an upper plate, and so that a material of a part of a surface of the upper plate is the first material and a material of another part of the surface is the second material, the first material and the second material being two different materials.

In one embodiment, the first material and the second material have different hardnesses.

In one embodiment, the first material is selected from one of the following materials: PE, PET, PVC, PS, and PMMA; and the second material is selected from one of the following materials: TPE, TPU, SBS, TPO and TPS.

In one embodiment, the surface of the upper plate formed of the first material is lower than the surface of the upper plate formed of the second material.

In one embodiment, the manufacturing method further comprises the steps of: providing a lower plate, and connecting the upper plate and the lower plate with each other through a double-layer plastic uptake process.

In one embodiment, the manufacturing method further comprises the steps of: a stiffener is placed between the upper plate and the lower plate in a two-layer blister process.

According to a fourth aspect of the present invention, there is provided a sheet material, which has an upper plate to which an anti-slip band is attached, and in which a portion of the upper plate on which the anti-slip band is provided has, in order from top to bottom, an anti-slip layer, a mixed layer and a base material layer, wherein the mixed layer is formed by mixing a first material and a second material different from the first material, and wherein the anti-slip layer is made of the second material.

In one embodiment, the mixed layer is formed by fusing a first material and a second material with each other.

In one embodiment, the second material is selected from one of the following materials: TPE, TPU, SBS, TPO and TPS.

In one embodiment, the material of the substrate layer is selected from one of the following materials: PE, PET, PVC, PS, and PMMA.

In one embodiment, the thickness of the anti-slip layer is 1-4 mm.

In one embodiment, the thickness of the mixed layer is 0.5-2 mm, preferably 1-1.5 mm.

In one embodiment, the height of the anti-slip belt protruding from the surface of the upper plate is 0.5-3 mm, preferably 1-2 mm.

In one embodiment, the anti-slip layer has a hardness of 65 to 75 HS.

In one embodiment, the width of the anti-slip band is 30mm to 60mm, preferably 40mm to 50 mm.

In one embodiment, a plurality of anti-slip bands spaced apart from each other are distributed on the upper plate.

In one embodiment, the plate further has a lower plate connected to the other surface of the upper plate opposite to the surface provided with the anti-slip band, and the upper plate and the lower plate are hollow.

In one embodiment, the upper plate and the lower plate are manufactured by a double-layer plastic uptake process.

In one embodiment, a reinforcement is disposed between the upper plate and the lower plate.

In one embodiment, the reinforcement is a steel tube.

According to a fifth aspect of the present invention, there is provided a pallet, which comprises at least a top plate, wherein the top plate is made of the above-mentioned sheet material.

According to a sixth aspect of the present application, there is provided a tray comprising:

a top plate;

a base plate; and

the top plate, the upright post and the bottom plate are sequentially connected from top to bottom; wherein

The top plate has an upper plate and a lower plate connected to each other, and/or the bottom plate has an upper plate and a lower plate connected to each other.

In one embodiment, the tray has a plurality of posts, each of which has one end detachably connected to the top plate and the other end detachably connected to the bottom plate.

In one embodiment, the top plate is provided with a plurality of top plate mounting holes, the bottom plate is provided with a plurality of bottom plate mounting holes, the tray is provided with a plurality of stand columns, and each stand column is provided with a stand column mounting hole; and the tray further comprises a plurality of connecting pieces, wherein each connecting piece sequentially penetrates through the corresponding top plate mounting hole, the upright post mounting hole and the bottom plate mounting hole to sequentially connect the top plate, the upright post and the bottom plate.

In one embodiment, when the top plate has an upper plate and a lower plate connected to each other, a reinforcing member is provided between the upper plate of the top plate and the lower plate of the top plate.

In one embodiment, at least a portion of the reinforcement between the upper plate of the top plate and the lower plate of the top plate is positioned directly above the stud.

In one embodiment, the reinforcement between the upper plate of the top plate and the lower plate of the top plate is a steel pipe.

In one embodiment, when the top plate has an upper plate and a lower plate connected to each other, a plurality of top plate protrusions are distributed on an inner surface of at least one of the upper plate of the top plate and the lower plate of the top plate, wherein at least a part of the top plate protrusions are sequentially connected together through a rib.

In one embodiment, when the base plate has an upper plate of the base plate and a lower plate of the base plate connected to each other, a reinforcement is provided between the upper plate of the base plate and the lower plate of the base plate.

In one embodiment, at least a portion of the reinforcement between the upper plate of the base plate and the lower plate of the base plate is positioned directly below the stud.

In one embodiment, the reinforcement between the upper plate of the base plate and the lower plate of the base plate is a steel pipe.

In one embodiment, when the bottom plate has an upper plate and a lower plate connected to each other, a plurality of reinforcing protrusions are distributed on an inner surface of at least one of the upper plate of the bottom plate and the lower plate of the bottom plate, wherein at least a part of the reinforcing protrusions are sequentially connected together by a rib.

In one embodiment, the top plate and/or the bottom plate are made by a double-layer plastic uptake process.

In one embodiment, the back surface of the top plate is provided with a top plate positioning groove, the top plate mounting hole is formed in the position of the top plate positioning groove, the top end of the upright post is provided with a top boss, and the top boss is matched with the corresponding top plate positioning groove.

In one embodiment, the top plate positioning groove is provided with a top plate groove at the periphery, and the top part of the upright post is provided with an upper mounting wall at the periphery, and the mounting wall is operatively embedded into the top plate groove.

In one embodiment, the top periphery of the top plate positioning groove is provided with an annular bulge protruding out of the back surface of the top plate.

In one embodiment, the top plate is provided with at least three rows of top plate positioning grooves which are spaced from each other, and the number of each row of top plate positioning grooves is at least three.

In one embodiment, four top plate positioning grooves are respectively arranged at four corners of the top plate, and each top plate positioning groove is provided with at least two top plate mounting holes.

In one embodiment, the front surface of the base plate is provided with a base plate positioning groove, the base plate mounting hole is formed in the position of the base plate positioning groove, the bottom end of the upright post is provided with a bottom boss, and the bottom boss is matched with the corresponding base plate positioning groove.

In one embodiment, the bottom plate positioning groove is provided with a bottom plate groove at the periphery, and the bottom periphery of the upright post is provided with a lower mounting wall which is operatively embedded in the bottom plate groove.

In one embodiment, the top periphery of the bottom plate positioning groove is provided with an annular bulge protruding out of the front surface of the bottom plate.

In one embodiment, the bottom plate is provided with at least three rows of bottom plate positioning grooves spaced apart from each other, and the number of the bottom plate positioning grooves in each row is at least three.

In one embodiment, four bottom plate positioning grooves are respectively arranged at four corners of the bottom plate, and each bottom plate positioning groove is provided with at least two bottom plate mounting holes.

In one embodiment, the top plate, the upright and the bottom plate are removably attached to each other.

In one embodiment, the front surface of the top plate is provided with a plurality of anti-slip bands, and the anti-slip bands are made of TPE, TPU, SBS, TPO or TPS materials.

In one embodiment, the front surface of the top plate is provided with a plurality of anti-slip bands, and the anti-slip bands are 0.5mm to 3mm higher than the front surface of the top plate, preferably 1mm to 2mm higher.

In one embodiment, the connecting member includes a main connecting member and an auxiliary connecting member, wherein the main connecting member sequentially passes through the top plate, the upright post and the bottom plate along a first direction, and the auxiliary connecting member at least partially passes through the bottom plate along a second direction opposite to the first direction and is connected to the main connecting member in a clamping manner.

According to a seventh aspect of the present invention, there is also provided a tray comprising:

a top plate;

a base plate; and

The top plate and/or the bottom plate are/is manufactured through a double-layer plastic suction process.

According to an eighth aspect of the present invention, there is provided a column, the column has a columnar body, the top periphery of the columnar body is provided with at least two top bosses protruding the top surface of the columnar body, wherein the columnar body is provided with column mounting holes penetrating up and down along the central axis direction of the columnar body inside at least two top bosses.

In one embodiment, an upper mounting wall is arranged on the periphery of the columnar body between two adjacent top bosses.

In one embodiment, the periphery of the bottom of the columnar body is provided with at least two bottom bosses protruding out of the bottom surface of the columnar body, wherein the top bosses and the bottom bosses are arranged in pairs in an opposite manner, and the interiors of the at least two top bosses and the corresponding interiors of the oppositely arranged bottom bosses are communicated up and down along the direction of the central axis of the columnar body.

In one embodiment, a lower mounting wall is arranged on the periphery of the columnar body between two adjacent bottom bosses.

In one embodiment, the interior of the columnar body is vertically through along the central axis direction thereof, and the middle part of the columnar body is provided with a central reinforcing rib extending along the central axis thereof.

In one embodiment, the cross section of the central reinforcing rib is annular, and the central reinforcing rib is connected to the inner side wall of the columnar body through a plurality of connecting ribs which are spaced from each other.

In one embodiment, the inner side wall of the columnar body is distributed with reinforcing ribs extending along the central axis direction of the columnar body.

In one embodiment, the pillar has four top bosses and four bottom bosses, wherein the inside of each top boss and the inside of the corresponding bottom boss which is arranged oppositely are vertically through.

According to a ninth aspect of the present invention, a pallet is provided, which comprises a top plate, a bottom plate and a plurality of columns, wherein the top plate, the columns and the bottom plate are sequentially connected from top to bottom, each column has a columnar body, at least two top bosses protruding from the top surface of the columnar body are arranged on the periphery of the top of the columnar body, and column mounting holes penetrating up and down along the central axis direction of the columnar body are arranged inside the columnar body at the positions of the at least two top bosses.

In one embodiment, the back surface of the top plate is provided with a top plate positioning groove, and the top boss is operatively inserted into the corresponding top plate positioning groove.

In one embodiment, the top plate positioning groove is provided with a top plate groove at the periphery, and the top periphery of the upright post is provided with an upper mounting wall between two adjacent top bosses, and the mounting wall is operatively embedded in the top plate groove.

In one embodiment, the front surface of the bottom plate is provided with bottom plate positioning grooves, the periphery of the bottom of the columnar body is provided with at least two bottom bosses protruding out of the bottom surface of the columnar body, and the bottom bosses are operatively inserted into the corresponding bottom plate positioning grooves.

In one embodiment, the bottom plate positioning groove is provided with a bottom plate groove at the periphery, and the bottom periphery of the upright post is provided with a lower mounting wall between two adjacent bottom bosses, and the lower mounting wall is operatively embedded in the bottom plate groove.

In one embodiment, the top plate is provided with a plurality of top plate mounting holes, and the bottom plate is provided with a plurality of bottom plate mounting holes; and the tray further comprises a plurality of connecting pieces, wherein each connecting piece sequentially penetrates through the corresponding top plate mounting hole, the upright post mounting hole and the bottom plate mounting hole to sequentially connect the top plate, the upright post and the bottom plate.

In one embodiment, the top plate is formed by connecting an upper plate and a lower plate, a reinforcing member is arranged between the upper plate of the top plate and the lower plate of the top plate, and at least a part of the reinforcing member between the upper plate of the top plate and the lower plate of the top plate is arranged right above the upright.

In one embodiment, the bottom plate is formed by connecting an upper plate and a lower plate, a reinforcing member is also arranged between the upper plate of the bottom plate and the lower plate of the bottom plate, and at least a part of the reinforcing member between the upper plate of the bottom plate and the lower plate of the bottom plate is arranged right below the upright post.

In one embodiment, the reinforcement is a steel tube.

In one embodiment, the top plate is formed by connecting an upper plate and a lower plate, a plurality of top plate bulges are distributed on the inner surface of at least one of the upper plate of the top plate and the lower plate of the top plate, and at least a part of the top plate bulges are sequentially connected together through convex ribs; and/or the bottom plate is formed by mutually connecting an upper plate and a lower plate, a plurality of reinforcing protrusions are distributed on the inner surface of at least one of the upper plate of the bottom plate and the lower plate of the bottom plate, and at least part of the reinforcing protrusions are sequentially connected together through convex ribs.

The tray of this application has following advantage:

1. the advantages of the injection molding and double-layer plastic uptake process structure are combined, so that the product has the characteristics of high strength of the injection molding tray and the characteristics of light weight, long service life, low temperature resistance and the like of the hollow molding tray.

2. The tray adopts the assembly molding, can install fast and dismantle, but local maintenance.

3. The anti-skid property is good, and the anti-skid belt is not easy to fall off.

4. The cost is low.

Drawings

Fig. 1 is a perspective view of a tray according to an embodiment of the present invention.

Fig. 2 is an exploded perspective view of the tray of fig. 1.

Fig. 3 is a perspective view of the top plate of the tray of fig. 1.

Fig. 3A is an enlarged view of a portion a in fig. 3.

Fig. 4 is an exploded perspective view of the top plate of fig. 3.

Fig. 4A is an enlarged view of a portion B in fig. 4.

Fig. 5 is a perspective view of the bottom plate of the tray of fig. 1.

Fig. 5A is an enlarged view of a portion C in fig. 5.

Fig. 6 is an exploded perspective view of the base plate of fig. 5.

Fig. 7 is a perspective view showing the arrangement of the steel pipes and the columns of the pallet of fig. 1.

Fig. 8 is a perspective view of a column of the pallet of fig. 1.

FIG. 9 is a partial view of the pallet of FIG. 1, partially broken away to show the mounting of the posts.

FIG. 10 is a perspective view of a primary connection according to an embodiment of the present invention.

Fig. 11 is a front view of the primary connector of fig. 10.

Fig. 12 is a side view in partial cross-section of the main link of fig. 10.

Fig. 13 is a perspective view of an auxiliary connection member according to an embodiment of the present invention.

Fig. 14 is a front view of the auxiliary connection member of fig. 13.

Fig. 15 is a side view of the auxiliary connection of fig. 13.

FIG. 16 is a partial front view of the tray of FIG. 1, taken along the central axis of the connector assembly.

FIG. 17 is a partial perspective view of the pallet of FIG. 1, partially cut away to show the connection of the top deck, the uprights, the bottom deck, and the connector assemblies.

Detailed Description

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings in order to more clearly understand the objects, features and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are merely intended to illustrate the spirit of the technical solution of the present invention.

In the following description, for the purposes of illustrating various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. One skilled in the relevant art will recognize, however, that the embodiments may be practiced without one or more of the specific details. In other instances, well-known devices, structures and techniques associated with this application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

Throughout the specification and claims, the word "comprise" and variations thereof, such as "comprises" and "comprising," are to be understood as an open, inclusive meaning, i.e., as being interpreted to mean "including, but not limited to," unless the context requires otherwise.

Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

As used in this specification and the appended claims, the singular forms "a", "an", and "the" include plural referents unless the context clearly dictates otherwise. It should be noted that the term "or" is generally employed in its sense including "and/or" unless the context clearly dictates otherwise.

In the following description, for the purposes of clearly illustrating the structure and operation of the present invention, directional terms will be used, but terms such as "front", "rear", "left", "right", "outer", "inner", "outer", "inward", "upper", "lower", etc. should be construed as words of convenience and should not be construed as limiting terms.

Fig. 1 and 2 show a perspective view and an exploded view, respectively, of a tray according to an embodiment of the present invention. As shown in fig. 1 and 2, the tray 1 includes a top plate 2, a bottom plate 3, and a pillar 4. Each upright 4 is detachably connected at one end to the top plate 2 and at the other end to the bottom plate 3. Thus, the top plate 2, the column 4, and the bottom plate 3 are connected in this order from top to bottom to form a pallet. Specifically, the tray 1 has a plurality of columns 4 and a plurality of connectors 5, each connector 5 passing through the top plate 2, the corresponding column 4, and the bottom plate 3 in sequence, thereby connecting the top plate 2, the columns 4, and the bottom plate 3 together. In one embodiment, the top plate 2 may be provided with a plurality of top plate mounting holes 203, and the bottom plate 3 may be provided with a plurality of bottom plate mounting holes 303. Each upright 4 is provided with an upright mounting hole, wherein each connecting piece 5 sequentially passes through the corresponding top plate mounting hole, upright mounting hole and bottom plate mounting hole to sequentially connect the top plate 2, the upright 4 and the bottom plate 3. In the embodiment shown in fig. 1 and 2, the tray 1 is provided with 9 columns in total, arranged in 3 rows and 3 columns. Each upright is connected with 2 connecting pieces 5. It will be appreciated that a suitable number of posts may be provided as required, for example 4, 5, 6 or 7 posts etc. Similarly, 1, 3, 4 or more connectors may be attached to each column, as desired. Since the pallet is constructed in a structure in which the top plate, the bottom plate and the posts are separately manufactured and then assembled together, it can be easily replaced when one of the parts is damaged, for example, when the top plate or the bottom plate is damaged.

Fig. 3-3A and 4-4A show structural views of the top plate 2 according to an embodiment of the present invention. As shown in fig. 3 to 4, the top plate 2 has an upper plate 201 and a lower plate 202 connected to each other. Specifically, the upper plate of the top plate and the lower plate of the top plate may be connected to each other through a double-layer suction molding process. The inner part of the top plate 2 is distributed with stiffeners 204. The reinforcement 204 may be, for example, a steel pipe, an aluminum alloy pipe, or the like. It will be appreciated that in some applications where load bearing requirements are not very high, the reinforcement may not be provided. The upper plate 201 of the top plate is generally rectangular and thin plate-shaped. The upper plate 201 of the top plate is a panel of the tray 1. The cargo is usually placed on the upper panel of the roof. The thickness of the upper plate 201 of the top plate is thin relative to the lower plate 202 of the top plate. The upper plate 201 of the top plate is distributed with a plurality of through holes, wherein a part of the through holes are used for mounting the top plate, and the part of the through holes form a part of the top plate mounting holes.

More specifically, the upper plate 201 of the top plate has a base plate 2011. A slip-resistant band 2012 is attached to the base 2011. Typically, a plurality of spaced and parallel anti-slip bands 2012 are provided on the upper plate 201 of the top plate. Of course, the slip bands 2012 may intersect. The width of the antiskid belt is 30 mm-60 mm, preferably 40 mm-50 mm. The slip band 2012 is at least partially embedded within the base 2011 and protrudes from the surface of the base 2011. The height of the anti-slip belt protruding out of the surface of the substrate is 0.5-3 mm, preferably 1-2 mm. Therefore, the part of the upper plate 201 of the top plate, which is provided with the anti-slip belt 2012, is provided with the anti-slip layer, the mixed layer and the base material layer from top to bottom in sequence, wherein the base material layer is made of a first material, and the anti-slip layer is made of a second material. The mixed layer is formed by mixing two different materials, namely a first material and a second material. Preferably, the mixed layer is formed by fusing the first material and the second material with each other. Therefore, the antiskid belt can be firmly fixed on the base plate and cannot easily fall off in the using process. Preferably, the hardness of the anti-slip layer is 65-75 HS. In one embodiment, the thickness of the anti-slip layer is 1mm to 4mm, preferably 2mm to 3 mm. The thickness of the mixed layer is 0.5mm to 2mm, preferably 1mm to 1.5 mm. The first material may be selected from one of the following materials: PE, PET, PVC, PS, and PMMA. The second material may be selected from one of the following materials: TPE, TPU, SBS, TPO and TPS.

With continued reference to fig. 3 and 4, the lower surface 2021 of the lower plate 202 of the top plate 2 is provided with a top plate positioning groove 2022. The lower plate 202 of the top plate is provided with at least three rows of top plate positioning grooves 2022 spaced apart from each other, the number of each row of top plate positioning grooves being at least three. Four corners of the top plate are respectively provided with four top plate positioning grooves. The outer periphery of the ceiling positioning groove 2022 is provided with a ceiling groove 2023, and the mounting wall on the pillar 4 is operatively inserted into the ceiling groove 2023, as will be further described below. The top periphery of the ceiling positioning groove 2022 is provided with an annular projection 2024 projecting the rear surface of the ceiling, i.e., the lower surface of the lower plate 202. The structure and shape of the top plate positioning groove 2022 match the structure and shape of the top boss of the upright post. In this embodiment, the upright is provided with a plurality of top bosses spaced apart from one another and, correspondingly, the top plate locating recess is in the form of a plurality of recesses spaced apart from one another. The top boss is matched with the top plate positioning groove. The top plate mounting hole 203 penetrates a part of the top plate positioning grooves. In this embodiment, two grooves in each top plate positioning groove are provided with top plate mounting holes. In another embodiment, each top plate positioning groove is provided with one, three or four top plate mounting holes 203. The material of the lower plate of the top plate may be the same as the material of the base plate of the upper plate, i.e., the lower plate of the top plate may be made of the first material described above.

An upper surface 2025 of the lower plate 202 of the top plate 2, i.e., a surface 2025 of the lower plate 202 facing the inside of the top plate 2, is provided with a reinforcing protrusion 2026. At least a portion of the reinforcement protrusions 2026 are connected together in sequence by a rib 2027. The lower plate 202 of the top plate 2 is further arranged with a plurality of grooves 2028 for placing stiffeners 204. The plurality of grooves 2028 may be arranged in a grid. Preferably, at least a portion of the groove 2028 is located above the top plate positioning groove 2022. Thus, when the stiffener 204 is placed in the portion of the groove 2022, the stiffener 204 is positioned directly above the stud 4, as shown in fig. 7. Thereby, the static bearing capacity of the pallet can be increased.

In manufacturing the top panel 2, an upper panel of the top panel may be manufactured first. And then the upper plate of the top plate and the lower plate of the top plate are connected with each other through a double-layer plastic uptake process. During the double layer blister process, a stiffener, such as a steel tube, may be placed between the upper and lower plates of the top plate. Specifically, in manufacturing the upper plate 201 of the above-described top plate, a manufacturing method including the steps of: the method includes extruding a first material into a die through a first extrusion apparatus and simultaneously extruding a second material into the die through a second extrusion apparatus such that the first material and the second material are at least partially mixed in a molten state in the die to form an upper plate of the top plate, and such that a material of a part of a surface of the upper plate of the top plate is the first material and a material of another part of the surface is the second material, the first material and the second material being two different materials. Here, the first extrusion apparatus and the second extrusion apparatus may employ any suitable extrusion apparatus that is currently available or yet to be developed, and will not be described in detail herein. The mold may be designed according to the shape and size of the upper plate of the top plate to be formed, and will not be described in detail herein.

As shown in fig. 5, 5A and 6, the bottom plate 3 has an upper plate 301 and a lower plate 302 connected to each other. Specifically, the upper plate of the base plate and the lower plate of the base plate may be connected to each other through a double-layer suction molding process. The inside of the bottom plate 3 is distributed with reinforcements 304. The reinforcement 304 may be, for example, a steel pipe, an aluminum alloy pipe, or the like. It will be appreciated that in some applications where load bearing requirements are not very high, the reinforcement may not be provided.

The base plate 3 is constituted by a plurality of arms 3010 arranged in a substantially rectangular structure. The upper surface 3011 of the upper plate 301 of the base plate 3 is provided with a base plate positioning groove 3012. The upper plate 301 of the base plate is provided with three rows of base plate positioning grooves 3012 spaced from each other, and the number of the base plate positioning grooves in each row is three. The bottom plate positioning grooves are respectively positioned at the intersection of the support arms.

The base plate positioning recess 3012 is provided with a base plate groove 3013 at its periphery, and the mounting wall on the post 4 is operatively inserted into the base plate groove 3013, as will be further described below. The top periphery of the bottom plate positioning groove 3012 is provided with an annular projection 3014 projecting from the front surface of the bottom plate, i.e., from the upper surface of the upper plate 302. The structure and shape of the bottom plate positioning groove 3012 are matched with the structure and shape of the bottom boss of the upright post. In this embodiment, the upright is provided with a plurality of mutually spaced bottom bosses and, correspondingly, the bottom plate positioning recesses are in the form of mutually spaced recesses. The bottom boss of the upright post is matched with the positioning groove of the bottom plate. The base plate mounting hole 303 passes through a part of the base plate positioning grooves. In this embodiment, two grooves of each bottom plate positioning groove are provided with bottom plate mounting holes. In another embodiment, three or four base plate mounting holes 303 are provided per base plate positioning recess.

An upper surface 3025 of the lower plate 302 of the bottom plate 3, i.e., a surface 3025 of the lower plate 302 facing the inside of the bottom plate 3, is provided with reinforcing protrusions 3026. At least a portion of the reinforcing protrusions 3026 are connected in series by a rib 3027. The lower plate 302 of the bottom plate 3 is further arranged with a plurality of recesses 3028 for placing the reinforcement 304. The plurality of grooves 3028 may be arranged in a grid pattern, and at least a portion of the grooves 3028 are located below the bottom positioning groove 3022. Thus, when the reinforcing member 304 is placed in this part of the recess 3022, the reinforcing member 304 is located directly below the pillar 4, as shown in fig. 7. The material of the upper plate and the lower plate of the bottom plate may be the same as the material of the base plate of the upper plate of the top plate, i.e., the upper plate and the lower plate of the bottom plate may be made of the first material described above.

In manufacturing the base plate 3, the upper plate of the base plate and the lower plate of the base plate may be connected to each other through a double-layer blister process. During the double layer blister process, a stiffener, such as a steel tube, may be placed between the upper and lower plates of the base plate.

As shown in fig. 7 and 8, the pillar 4 has a columnar body 401. The columnar body 401 is a hollow shell-like member. The interior of the columnar body 401 is through up and down along the central axis direction thereof, and the middle part of the columnar body is provided with a central reinforcing rib 402 extending along the central axis thereof. The central rib 402 has a circular cross section and is connected to the inner sidewall of the cylindrical body 401 via a plurality of connecting ribs 403 spaced apart from each other. The inner side wall of the columnar body is also distributed with reinforcing ribs 404 extending along the direction of the central axis thereof.

The top periphery of the columnar body 401 is provided with four top bosses 405 protruding the top surface of the columnar body, wherein the interior of the columnar body at the at least two top bosses 405 penetrates up and down along the central axis direction of the columnar body, thereby forming a column mounting hole 406. The inner side of the sidewall defining the post mounting hole 406 is provided with a reinforcement 4061. In another embodiment, the top periphery of the cylindrical body may form 2 or 3 or more top bosses. The number of post mounting holes 406 may be 2, 3, or more. The outer periphery of the cylindrical body 401 is provided with an upper mounting wall 409 between two adjacent top bosses 402. The upper mounting wall 409 may be fitted into the ceiling groove 2023 of the lower plate of the ceiling when mounted.

The periphery of the bottom of the columnar body 401 is provided with four bottom bosses 407 protruding the bottom surface of the columnar body, wherein the top boss 405 and the bottom boss 407 are arranged in pairs and oppositely, and the inside of the top boss and the inside of the corresponding oppositely-arranged bottom boss are vertically communicated along the direction of the central axis of the columnar body to form a column mounting hole 406. In another embodiment, the bottom periphery of the cylindrical body may form 2 or 3 or more bottom bosses. The number of post mounting holes 406 may be 2, 3, or more. The outer periphery of the cylindrical body 401 is provided with a lower mounting wall 408 between two adjacent bottom bosses 407. The lower mounting wall 408 may be recessed into the floor channel 3013 of the upper plate of the floor when installed. The posts may be made of high strength plastic, and may be made by injection molding. Preferably, the top boss and the bottom boss are identical in shape and structure. More preferably, all of the top bosses are identical in configuration and shape and all of the bottom bosses are identical in configuration and shape.

As shown in fig. 10 to 17, the connector 5 includes a main connector 501 and an auxiliary connector 502. The main connecting piece 501 penetrates through the top plate 2, the upright post 4 and the bottom plate 3 in sequence along a first direction, and the auxiliary connecting piece 502 at least partially penetrates through the bottom plate 3 along a second direction opposite to the first direction and is connected to the main connecting piece 501 in a clamping mode. In this embodiment, as seen from the figure, the first direction is a top-to-bottom direction, and the second direction is a bottom-to-top direction.

As shown in fig. 10 to 12, the main connector 51 has a rod-shaped main body 5011 and hooks 5012 provided at the bottom end of the rod-shaped main body. The inside of the main connector's shaft body is provided with a hollow passage 5013 extending along the central axis of the shaft body. A first stop 5015 is formed on a side wall 5014 defining a hollow channel 5013. The first stop 5015 projects radially inwardly relative to the sidewall 5014. The second limit stop on the secondary connection is operably abutted against the first limit stop 5015, as will be further explained below. Also provided in the hollow passage of the primary connector above the first stop land is a spigot land 5016 which cooperates with a barb on the secondary connector which barbs operatively hook over the spigot land. The top end of the main connector 501 is provided with a cap 5013, and the diameter of the cap 5013 is larger than that of the rod-shaped main body. A drain opening 5019 is provided in the side wall of the bottom end of the rod-like body of the main connector 51, and communicates with the hollow passage 5013 to the outside. The hollow passage 5013 extends through the entire main connector rod-like body and the cap 5013. The bottom end of the main connector 51 also has two arms 5017 that are spaced apart from each other, and a catch 5018 is provided on the outside of each arm 5017. The snap 5018 can engage a corresponding structure of the base plate, as further described below. The primary connector is made of plastic. Preferably, the primary connector is made of plastic plus glass fibre.

As shown in fig. 13 to 15, the auxiliary connector 502 has a rod-shaped body 5021. A detaching groove 5023 is provided on a sidewall 5022 of the rod-shaped body 5021 of the auxiliary connector 502. The detaching slot 5023 is used for a tool such as a screwdriver to enter to detach the auxiliary connector. The outer wall of the rod-shaped body of the secondary connector 502 is provided with a second stop 5024, wherein the second stop 5024 operatively abuts the first stop of the primary connector. This can limit the insertion depth of the auxiliary connector 502, and prevent the auxiliary connector from being inserted too deeply and being difficult to be removed. The secondary connector 502 is also provided with barbs 5025. A barb 5025 is between the second limit stop 5024 and an end 5026 of the secondary connector. The barbs 5025 operatively hook over the spigot platform 5016. Thus, the auxiliary connector 502 can be fixedly connected to the main connector. The auxiliary connection is made of plastic. Preferably, the auxiliary connection is made of plastic plus glass fibre.

When the assembling process is carried out, firstly, the top plate, the upright posts and the bottom part are sequentially overlapped together from top to bottom, and two ends of each upright post are respectively arranged in the corresponding top plate positioning groove of the top plate and the corresponding bottom plate positioning groove of the bottom plate. Then, the connecting piece passes through the corresponding roof mounting hole, the stand mounting hole and the bottom plate mounting hole in sequence to connect the roof 2, the stand 4 and the bottom plate 3 in sequence. After assembly, the connecting element 5 is substantially inside the tray and is therefore not easily damaged.

When a certain part is damaged and needs to be replaced, the connecting pieces can be sequentially taken down, the top plate, the upright post and the bottom plate are separated, the damaged part is replaced, and then the parts are assembled in the above mode. Therefore, the tray of the application is convenient to assemble, can be rapidly assembled and disassembled, and is convenient to maintain.

While the preferred embodiments of the present invention have been described in detail above, it should be understood that aspects of the embodiments can be modified, if necessary, to employ aspects, features and concepts of the various patents, applications and publications to provide yet further embodiments.

These and other changes can be made to the embodiments in light of the above detailed description. In general, in the claims, the terms used should not be construed to be limited to the specific embodiments disclosed in the specification and the claims, but should be construed to include all possible embodiments along with the full scope of equivalents to which such claims are entitled.

Claims

1. A pallet, comprising a top plate, a bottom plate and a plurality of columns, the top plate, the columns and the bottom plate being connected in sequence from top to bottom via a connecting member, wherein the connecting member comprises:

2. The tray according to claim 1, wherein the rod-shaped main body of the main connector is internally provided with a hollow channel extending along a central axis of the rod-shaped main body, a first limit stop is formed on a side wall defining the hollow channel, and the outer wall of the rod-shaped main body of the auxiliary connector is provided with a second limit stop, wherein the second limit stop is operatively abutted against the first limit stop.

3. A tray according to claim 2, wherein the hollow channel of the primary connector has a spigot platform therein above the first stop platform, the secondary connector has a barb, wherein the barb is between the second stop platform and an end of the secondary connector, and the barb is operable to hook over the spigot platform.

4. A tray according to claim 2, wherein the top end of the main connecting member is provided with a cap having a diameter larger than that of the rod-like body, and a drain port communicating with the hollow passage and leading to the outside is provided on a side wall of the bottom end of the rod-like body of the main connecting member.

5. The tray of claim 4, wherein the hollow channel extends through the entire main connector rod-like body and the cap.

6. The tray according to claim 1, wherein the side wall of the rod-shaped body of the auxiliary connecting member is provided with a detaching groove.

7. The tray according to claim 1, wherein the bottom end of the main connecting member has two arms separated from each other, and the hook is provided on the outer side of each arm.

8. The tray of claim 1, wherein the primary and secondary connectors are each made of plastic.

9. The tray of claim 1, wherein the primary connectors and the secondary connectors are each made of plastic plus fiberglass.

10. A connector, characterized in that it comprises: