Plastic tray with removable elastomer foot pads

Abstract

A conveying system (100) is disclosed, comprising: a tray (110) formed of plastic, wherein the tray extends in a height direction from a tray top panel (130) to a tray bottom panel (140) to define a tray height, in a length direction from a tray front end (160) to a tray rear end (170) to define a tray length, and in a width direction from a tray first side (190) to a tray second side (200) to define a tray width, wherein the tray bottom panel defines a recess (210) that defines a recess sidewall extending in the height direction into the tray, and the recess sidewall extends from the tray bottom panel to a recess base to define a recess depth; and a pad (240) formed of an elastomer, the pad being complementary in shape to the recess and configured to be removably secured within the recess to define a tray foot.

Description

Technical Field

[0001] This document discloses a pallet for moving goods, more specifically a plastic pallet with removable, resilient support feet. A support system is also disclosed herein. Background Technology

[0002] A pallet is a portable, rigid platform used for consolidated shipments to facilitate the movement of goods. Pallets are typically made of wood or plastic. Plastic pallets loaded with goods can be moved from one place to another via a chain conveyor system, such as when loading freight trucks. Slippage between the chain conveyor chain and the plastic pallet can generate frictional heat and cause damage. The complexity of the solution lies in the lack of standard spacing between the chains in the conveyor system. The goal is to prevent this type of damage to plastic pallets.

[0003] DE 20 2007 011531 teaches a conveying pallet comprising a support surface for conveying goods and spacers designed as legs on the underside of the support surface, characterized in that at least some spacers are provided on or near the outer periphery of the pallet, wherein an outwardly opening recess is provided, in which at least one retaining element is provided that is securely connected to the spacers.

[0004] JP H10 77037 A teaches a non-slip member for imparting anti-slip properties to a synthetic resin tray, a belt formed of anti-slip material in the form of a strip, and components, wherein a cylindrical insert leg end opens when there is more handling space on one side of the belt portion, characterized in that it is provided as an integrated design.

[0005] JP S49 24837 Y1 teaches a tray with multiple reinforcing ribs.

[0006] EP1 980 495 A1 teaches a multi-functional pallet for transporting goods by manipulating a forklift, comprising a single component body consisting of a platform, the lower side of which corresponds to its apex and includes support legs, characterized in that the platform has a flat upper side with a plurality of slots designed to connect a panel, the panel laterally containing an object placed on the platform.

[0007] US 2005 / 150892 A1 teaches a container comprising a base and sidewalls and endwalls connected to the base, thereby forming a body having an opening at the top that is closed by a movable lid. The walls are made of a double-wall structure and include an outer panel and an inner panel. A wall shelf with an inwardly recessed groove is formed near the top to receive and mate with the lower edge of the lid. At least one latching member is fully mounted on the upper portion of each of the two opposing walls and is movable between locked and unlocked positions to lock or unlock the lid on the container body. Summary of the Invention

[0008] A conveying system is disclosed, comprising: a pallet formed of plastic, wherein the pallet extends in a height direction from a top plate to a bottom plate to define a pallet height, in a length direction from a front end to a rear end to define a pallet length, and in a width direction from a first side to a second side to define a pallet width, wherein the bottom plate defines a recess, the recess defining a recess sidewall extending into the pallet in the height direction, and the recess sidewall extending from the bottom plate to a recess base to define a recess depth; and a pad formed of an elastomer, the pad having a shape complementary to the recess and configured to be detachably secured within the recess to define pallet legs.

[0009] Also disclosed is a pad for placement in a tray recess, the pad comprising: a top surface extending from the top surface to the bottom surface in a height direction to define a pad height, extending from the front end to the rear end in a length direction to define a pad length, and extending from a first side to a second side in a width direction to define a pad width; pad ribs extending from the bottom surface in a height direction, extending from the front end to the rear end in a length direction, and spaced apart from each other in a width direction, such that adjacent pairs of pad ribs define a chain receiving track; and the pad being formed of an elastomer.

[0010] A method is also disclosed, the method comprising: placing an elastomeric pad in a groove formed along the bottom plate of a plastic pallet, wherein the pallet is configured to transport goods; and removing the pad from the groove after transporting the goods.

[0011] A support system is also disclosed, comprising: a main platform for a plastic pallet, the main platform being formed by main platform segments that can be connected to each other, each main platform segment including a first side and a second side, the first side and the second side defining notches and tabs respectively, the notches and tabs matching the tabs and notches of other main platform segments to connect adjacent main platform segments to each other, wherein each main platform segment defines a main leg extending downward therefrom, wherein the main leg is sized to create a main slope along the main platform, wherein the main slope is 0.5-5 degrees, for example 1 degree; and auxiliary platform segments that can be connected to each other and connected to the main platform segments to form extensions of the main platform, wherein each auxiliary platform segment defines auxiliary legs extending downward therefrom, wherein the auxiliary legs are sized to make the main platform and the main platform extensions smooth and continuous and planar with each other, wherein the main platform has a circular or rectangular shape; and wherein the main platform has a continuous or discontinuous top surface.

[0012] These and other features and characteristics will be described in more detail below. Attached Figure Description

[0013] The following is a brief description of the accompanying drawings, in which the same elements are numbered the same. The purpose of the drawings is to describe the exemplary embodiments disclosed herein, and not to limit them.

[0014] Figure 1A A top perspective view of a tray according to one implementation scheme is given;

[0015] Figure 1B A bottom perspective view of a tray according to one embodiment is provided, the tray having a pad located in a recess formed in the tray;

[0016] Figure 2A A top view of a tray according to one implementation scheme is given;

[0017] Figure 2B A side view of a tray according to one implementation scheme is given;

[0018] Figure 2C A bottom view of a tray according to one embodiment is provided, the tray having a pad located in a groove formed in the tray;

[0019] Figure 3A yes Figure 2A A view of the tray section 3A as defined in the diagram;

[0020] Figure 3B yes Figure 3A A view of the tray section 3B as defined in the image;

[0021] Figure 4 This is a bottom perspective view of the pad according to an implementation plan;

[0022] Figure 5A This is a top view of one embodiment of the pallet, in which a groove with fastener channels is formed;

[0023] Figure 5B It is the edge of the tray Figure 5A The section view of section line 5B-5B was determined, and sections 6A and 6B, as described below, were determined.

[0024] Figure 6A A cross-sectional view of a tray groove is provided, in which a pad is present;

[0025] Figure 6B This is a cross-sectional view of a tray groove, in which there is no padding;

[0026] Figure 7A yes Figure 1A The tray shown is a bottom view, with no padding in the groove;

[0027] Figure 7B This is a bottom perspective view of the tray, with Figure 1B Similar to the example shown;

[0028] Figure 8A for Figure 4 Top perspective view of the pad shown;

[0029] Figure 8B This is a bottom perspective view of the pad, with Figure 4 Similar to the example shown;

[0030] Figure 8C It is a bottom perspective view of a pad according to one embodiment, wherein a recess is provided along the bottom of the pad;

[0031] Figure 8D This is a bottom perspective view of a pad according to one embodiment, wherein a groove is provided by the indentation;

[0032] Figure 8E Given Figure 6A The same aspect shown, in which the features of the fastener protrusion are identified in more detail;

[0033] Figure 9 It is a flowchart that shows how to apply the tray according to an implementation method;

[0034] Figure 10A Is with Figure 2C A similar bottom view of a tray with padding, and sections 10B and 10C described below are identified;

[0035] Figure 10B The following is given Figure 10A The center pad is installed in the tray shown;

[0036] Figure 10C The following is given Figure 10A The side pads installed in the tray shown;

[0037] Figure 11A A top perspective view of a support tray according to one embodiment is provided, wherein the support tray has a circular plate;

[0038] Figure 11B An implementation plan is provided. Figure 11A Bottom perspective view of the support tray;

[0039] Figure 11C An implementation plan is provided. Figure 11A Bottom perspective view of the interconnectable portion of the support tray;

[0040] Figure 11D An implementation plan is provided. Figure 11A Side view of the support tray; and

[0041] Figure 12A perspective view of a support tray according to one embodiment is provided, wherein the support tray has a square plate. Detailed Implementation

[0042] One or more embodiments of the disclosed apparatus and method are described in detail herein by way of example and not limitation, with reference to the accompanying drawings.

[0043] As noted, when loading freight trucks, plastic pallets filled with goods can be moved from one place to another via a chain conveyor system. Slippage between the chain conveyor and the plastic pallets generates frictional heat, causing damage. The complexity of the solution lies in the lack of a standard spacing between the chains in the conveyor system.

[0044] To address the aforementioned issues related to plastic pallets, Figure 1A-1B Conveying system (or system) 100 is shown in 2A-2C. System 100 includes a pallet 110 formed of a first material (e.g., plastic). Pallet 110 extends downward in a height direction 120 (e.g., along the height direction) from a top plate 130 to a bottom plate 140 to define a pallet height. Pallet 110 extends in a length direction 150 (e.g., along the length direction) from a front end 160 to a rear end 170 to define a pallet length. The pallet extends in a width direction 180 (e.g., along the width direction) from a first side 190 to a second side 200 to define a width.

[0045] like Figure 2A As shown and Figures 3A-3B As shown more clearly, the tray base 140 defines a recess (typically denoted as 210). The recess 210 defines recess sidewalls 220 that extend in the height direction 120 into the tray 110 and from the tray base 140 to the recess base 230 to define the recess depth. Figure 2B and Figure 4 As shown and discussed in more detail below, a pad (generally designated 240) formed of a second material (such as an elastomer) is detachably secured within a groove 210. The shape of the pad 240 is complementary to that of the groove 210, and the pad 240 defines the tray legs. In one embodiment, the pad 240 is configured to be friction-fitted within the groove 210, while in other embodiments, the pad 240 is press-fitted and secured within the groove (e.g., ...). Figure 6A (Discussed below). In one embodiment, the pallet bottom plate 140 is formed with quarter-symmetry, such that the bottom plate 140 is symmetrical along the bipartite axis of length and width.

[0046] Let's look at it again. Figures 3A-3BThe groove rib 320 extends downward from the groove base 230 toward the tray bottom plate 140 in the height direction 120. The groove rib 320 forms a grid that divides the groove base 230 into groove grid areas 230a and 230b. Although Figure 3A Six grooved grid areas are shown, arranged in three columns of width (two grooved grid areas per column), but for simplicity, only two grooved grid areas, 230a and 230b, are labeled. The groove rib 320 is configured to interact with the pad groove 330 formed in the pad top surface 250 of the pad 240. Figure 4 (The grooved grid areas 230a and 230b are joined together.) In one embodiment, the grooved grid areas 230a and 230b adjacent to either the first side 190 or the second side 200 of the tray are narrower than the other grooved grid areas 230a and 230b. In another embodiment, the grooved grid areas 230a and 230b furthest from the first side 190 or the second side 200 of the tray are narrower than the other grooved grid areas 230a and 230b. In another embodiment, the width columns of the grooved grid areas may continuously increase in size relative to each other in the width direction. In these embodiments, the inner column of the grooved grid area in the width direction (closer to the center of the tray in the width direction) may be the narrowest of the grooved grid areas in the width direction.

[0047] like Figure 3B As shown, the groove base 230 of the groove 210 defines a groove base bottom 340 facing the tray bottom plate 140 in the height direction 120. The groove base 230 defines a groove base body 350 extending upward from the groove base bottom 340 to the groove base top 360 in the height direction 120 according to the groove base thickness. The groove base top 360 faces upward toward the tray top plate 130 in the height direction 120. The groove base bottom 340 is configured such that when the pad 240 is detachably fixed in the groove 210, the groove base bottom 340 and the pad top surface 250 ( Figure 4 ) join.

[0048] Let's look again. Figures 5A-5B And as shown more clearly in 6A-6B, the recessed base 230 defines the fastener channel (e.g. Figure 6B As shown, it is typically denoted by 370. The fastener channel 370 is defined by the fastener channel sidewall 380. Figure 6BThe fastener channel sidewall 380 extends upward in the height direction 120 from the bottom 340 of the recessed base to the top 360 of the recessed base to define the fastener channel height. In one embodiment, the fastener channel 370 is cylindrical to define the diameter of the fastener channel. The fastener channel 370 is configured to resiliently engage by a notch or fastener protrusion (typically referred to as 390) extending in the height direction 120 from the pad top surface 250. Figure 6A Extending upwards. As shown below, the shape of the fastener protrusion 390 allows it to frictionally fit within the fastener channel 370.

[0049] like Figures 5A-5B As further shown, multiple fastener channels (e.g., first and second fastener channels) 370a, 370b are formed in the groove grid areas 230a, 230b, respectively. At least two fastener channels 370a, 370b have fastener channel diameters different from each other. The fastener channel diameter of the fastener channel 370a, 370b adjacent to either the first side 190 or the second side 200 of the tray is smaller than the diameter of the other fastener channels 370a, 370b. For example, as Figure 5A As shown, the first fastener channel 370a is closer to the second side 200 of the tray than the second fastener channel 370b, and its fastener channel diameter is smaller than that of the second fastener channel 370b. In one embodiment, the opposite configuration is provided, so that the fastener channel diameter of the fastener channels 370a, 370b furthest from either the first side 190 or the second side 200 of the tray is smaller than the diameter of the other fastener channels 370a, 370b. In another embodiment, all fastener channels 370a, 370b have the same dimensions as each other. In one embodiment, the dimensional difference between fastener channels 370a, 370b is proportional to the dimensional difference between the groove grid areas 230a, 230b.

[0050] Fastener channels 370a and 370b are respectively configured to connect with multiple fastener protrusions (such as the first and second fastener protrusions) 390a and 390b. Figure 5B The fastener protrusions 390a and 390b are elastically engaged, extending upward from the pad top surface 250 in the height direction 120. As shown below, the shapes of the fastener protrusions 390a and 390b allow them to frictionally fit within the respective fastener channels 370a and 370b.

[0051] Let's look again. Figures 7A-7B Pallet 110 defines a fork entry grid 460 between the top and bottom plates 130 and 140. The fork entry grid 460 defines a first set of fork entries 460a extending along the length direction 150 from the front end 160 of the pallet to the rear end 170 of the pallet. Figure 7BThe fork inlet grid 460 also defines a second set of fork inlets 460b extending in the width direction 180 from the first side 190 of the pallet to the second side 200 of the pallet. Figure 7B ).

[0052] like Figure 7A As shown, a first group and a second group of grooves 210a-210b are distributed along the length direction 150 on the first side 190 and the second side 200 of the tray, respectively, so that they are located in front of, in the middle of, and behind the second group of fork inlets 460b. The first group and the second group of grooves 210a-210b are offset from the first group of fork inlets 460a in the width direction 180. Figure 7A As shown, with this configuration, the first and second groups of grooves 210a and 210b each have three grooves distributed along the length direction 150 of the tray 110. For example, at the front end 160 of the tray, the first groove 210a1 is contained in the first group of grooves 210a, and the second groove 210b1 is contained in the second group of grooves 210b. Each groove in the first and second groups of grooves 210a and 210b has the same width dimension as each other.

[0053] The first and second sets of grooves 210a and 210b are respectively provided to receive the first and second sets of pads 240a-240b. Figure 7B For example, at the front end 160 of the tray, a first pad 240a1 is contained in a first group of pads 240a and a second pad 240b1 is contained in a second group of pads 240b. The shapes of the first and second groups of pads 240a and 240b are respectively consistent with the first and second groups of grooves 210a and 210b, so as to frictionally fit within the grooves 210a and 210b.

[0054] Back Figure 7A In one embodiment, a third set of recesses 210c is distributed along the length direction 150 along the central portion 470 of the pallet 110, such that it is located in front of, between, and behind the first set of fork inlets 460b, and offset from the first set of fork inlets 460a in the width direction. The third set of recesses 210c has three recesses distributed along the length direction 150 of the pallet 110 and having the same width dimension as each other. For example, at the front end 160 of the pallet, the third recess 210c1 is contained within the third set of recesses 210c. Figure 7B As shown, the third set of grooves 210c1 are respectively configured to receive the third set of pads 240c. For example, at the front end 160 of the tray, the third pad 240c1 is contained within the third set of pads 240c. The shape of the third set of pads 240c is consistent with that of the third set of grooves 210c, thereby frictionally fitting within the grooves 210c.

[0055] In one embodiment, the first and second sets of grooves 210a, 210b are wider than the third set of grooves 210c. Therefore, the first and second sets of pads 240a, 240b are wider than the third set of pads 240c. From this configuration, the tray 110 is arranged to be placed on different chain conveyors, each equipped with chains at different width positions.

[0056] Go to Figures 8A-8E The details of pad 240 are disclosed in more detail. Pad 240 may include a top surface 250, for example, when pad 240 is mounted in a recess 210 (e.g. Figure 5B The top surface 250 of the pad faces upward in the height direction 120. The pad 240 extends downward in the height direction 120 from the top surface 250 to the bottom surface 260 (or pad base) to determine the pad height (or pad thickness). The pad 240 extends in the length direction 150 from the front end 262 to the rear end 264 to determine the pad length. The pad 240 extends in the width direction 180 from the first side 266 to the second side 268 to determine the pad width. The pad 240 may have a certain height (or thickness) so that when the pallet 110 is placed on a conveyor with the pad 240 placed on a chain, the bottom surface 260 rides on the chain conveyor chain.

[0057] Ribs (commonly referred to as 280) extend downwards from the pad base surface 260 in the height direction 120. Ribs 280 extend from the front end 262 to the rear end 264 of the pad in the length direction 150. Ribs 280 can be spaced apart from each other in the width direction 180, so that each adjacent pair of ribs defines a chain receiving track (commonly referred to as 310) between them. Figure 8A As shown, pad 110 defines three chain receiving tracks 310a-310c that are adjacent to each other in the width direction 180. The four pad ribs defining the chain receiving tracks 310a-310c include a pair of outer pad ribs 280a1, 280a2 in the width direction and a pair of intermediate pad ribs 280b1, 280b2 in the width direction. In one embodiment, the intermediate pad ribs 280b1, 280b2 (i.e., intermediate pad ribs 280) in the width direction 180 may have the same or smaller span (e.g., may be the same thickness or thinner) as the outer pad ribs 280a1, 280a2 (i.e., outer pad ribs 280). That is, the intermediate pad ribs 280b2, 280b2 can be designed to have higher stiffness, so that they can be thinner than the outer pad ribs 280a1, 280a2.

[0058] like Figure 8B-8DAs shown, the top surface 250 defines a pad groove 330 extending downward in the height direction 120 into the pad 240. The pad groove 330 divides the top surface 250 into pad grid areas 250a, 250b, which are configured to engage with recessed ribs 320 extending downward in the height direction 120 from the recess 210 of the tray 110. Figures 3A-3B Although in Figure 8B Six pad grid areas are given, but for simplicity, only two pad grid areas, 250a and 250b, are labeled. In one embodiment, pad grid areas 250a and 250b are the same size as each other. In one embodiment, the pad grid area 250a or 250b adjacent to either of the pad sides 266 or 268 is narrower than the other pad grid areas 250a or 250b.

[0059] like Figure 8C-8E As shown, the fastener protrusion 390 extends upward from the pad top surface 250 in the height direction 120. The fastener protrusion 390 defines a protrusion neck 400, which has a cylindrical shape defining a neck diameter. The protrusion neck 400 extends from the pad top surface 250 to the protrusion neck tip 410 in the height direction 120 according to the neck height. Figure 8E The neck height is the same as the height of the fastener channel 370 (i.e., the height of the fastener channel sidewall 380). Figure 6B The height span is the same.

[0060] An anchor head 420 is formed at the tip 410 of the protruding neck. The anchor head 420 defines a ring with a diameter larger than the diameter of the fastener channel. The anchor head 420 extends from the tip 410 of the protruding neck to the tip 425 of the anchor head along the height direction 120. The anchor head 420 may be disc-shaped, flat annular, or may have other shapes, configured to elastically deform and bounce, allowing it to pass through the fastener channel 370 and bounce back to the top 360 of the groove base. Figure 6A ).

[0061] like Figure 8D As shown, the fastener protrusion 390 defines a protrusion groove 430 extending through the protrusion neck 400 and the anchor head 420. The protrusion groove 430 is defined by a protrusion groove wall 440, which extends upward from the pad top surface 250 to the anchor head tip 425 in the height direction 120 and from front to back in the length direction 150. From this configuration, the anchor head 420 is configured to be resiliently compressible when the fastener insertion channel is used to insert into and remove the pad 240 from the tray 110.

[0062] like Figure 8C and 8DAs shown, multiple fastener protrusions 390a and 390b are formed in the pad grid areas 250a and 250b, respectively. At least two fastener protrusions 390a and 390b have different neck diameters, which correspond to the diameters of the fastener channels 370a and 370b into which the fastener protrusions 390a and 390b are inserted, respectively. The size of the anchor head 420 is proportional to the neck diameter. For example, when inserted into the groove 210, the neck diameter of the fastener protrusion 390a and 390b adjacent to either the first or second side 190 or 200 of the tray is smaller than the neck diameter of the other fastener protrusions 390a and 390b. For example, in Figure 8C and 8D In one embodiment, the neck diameter of the first fastener protrusion 390a is larger than that of the second fastener protrusion 390b. In another embodiment, the opposite configuration is provided, for example, when inserted into the recess 210, the neck diameter of the fastener protrusions 390a and 390b furthest from either the first or second side 190 or 200 of the tray is smaller than that of the other fastener protrusions 390a and 390b. In yet another embodiment, all fastener protrusions 390a and 390b have the same dimensions as each other.

[0063] Go to Figure 9 The method of conveying goods via a chain conveyor system using a pallet 110 is also disclosed. As shown in box 1010, an elastomeric pad 240 is placed in a groove 210 formed along the bottom plate 140 of the plastic pallet 110 before conveying the goods. As shown in box 1020, the method includes removing the pad 240 from the groove 210 of the pallet 110 after conveying the goods.

[0064] Go to Figures 10A-10C An example structure of the pallet base 140 is given. The total span of the pallet 110 in the length direction 150 can be approximately 1300 mm, the total span in the width direction 180 can be approximately 1100 mm, and the total span in the height direction 120 (e.g.) Figure 1A The diameter can be approximately 145 mm, and can be 151 mm when including the pad rib 280.

[0065] Figure 10B The third pad 240c1 of the third group of pads 240c is given. In the width direction, the outer pad ribs 280a1 and 280a2 are both 4mm thick, and the distance between them is 32mm. In the width direction 180, the remaining pads in the third group of pads 240c are the same as the third pad 204c1.

[0066] exist Figure 10CThe diagram shows three chain receiving tracks 310a-310c. In the width direction, the outer pads 280a1 and 280a2 are both 4 mm thick, while in the width direction, the inner pads 280b1 and 280b2 are both 3 mm thick (although in another embodiment, they may have the same width as the outer pads). The distance between each pair of pads is 32 mm. The distance from the centerline 480 extending through the tray 110 in the length direction 150 to the inner side of the first pad 280a2 (e.g., facing the first chain receiving track 310a) is 406 mm. The distance from the centerline 480 to the inner side of the second pad 280b2 (e.g., facing the second chain receiving track 310b) is 441 mm. The distance from the centerline 480 to the inner side of the third pad 280b1 (e.g., facing the third chain receiving track 310c) is 476 mm. In the width direction 180, the remaining pads in the first set of pads 240a (… Figure 7B The first pad 204a1 is identical. This design explains two conventional chain conveyor structures with first and second chain receiving tracks 310a and 310b, where the distances are 406 mm and 441 mm, respectively. The track of the third chain receiving track 310c can accommodate chain structures with a centerline distance of 476-483.75 mm. For the third chain receiving track 310c, a spacing of 483.75 mm can be achieved by increasing the width (thickness) of adjacent ribs from 3 mm to 10.75 mm and extending the other end of the chain receiving track ribs from the second pad side 286 to the sides of each tray (190 or 200).

[0067] Second set of pads 240b ( Figure 7B The structure of the pad 240 is mirrored with respect to the centerline 480 with respect to the first set of pads 240a. This structure is designed so that it can be applied to chain tracks of different conveyor systems having at least three different chain conveyor layouts. In the embodiments disclosed above, the pad 240 can be installed and removed as needed. Thus, for example, if pallet 110 is damaged, pad 240 can be replaced with another pallet 110 for forming the groove 210 described herein.

[0068] Pallet 110 is designed to withstand typical pallet loading requirements. For example, under a forklift load of 15,000 N, pallet 110 is configured to deform by less than 20 mm or bend by less than 4.5 degrees. Additionally, under a stacking load of 3,000 kg, pallet 110 is configured to deform by less than 2%. Furthermore, under a load of 15,000 N, pallet 110 is configured to keep pad 240 fixed within groove 210.

[0069] Go to Figure 11A-11DArticles 1 and 12 provide a support system 700, which represents another pallet implementation. Specifically, system 700 includes a main platform 705, which defines a support system with a circular plate (…). Figure 11A-11D ) and square board ( Figure 12 Plastic trays. (e.g.) Figure 11C As shown, the main platform 705 is formed by main platform segments 710a and 710b that can be connected to each other. Each main platform segment 710a and 710b includes a first side surface 730 and a second side surface 740. The first and second side surfaces 730 and 740 each define a set of notches 750 and tabs 760, which respectively match (or dock) with the corresponding tabs and notches of the other main platform segments 710a and 710b. From this structure, adjacent main platform segments 710a and 710b can be connected to each other.

[0070] Main platform sections 710a and 710b each define main legs 770a and 770b extending downwards from the main platform sections 710a and 710b, respectively. These legs are represented as encapsulation structures, for example, formed as an external shell structure. The dimensions of the main legs 770a and 770b create a main slope 775 along the main platform 705. Figure 11D The main slope can be basically one (1) degree.

[0071] Auxiliary platform sections 800a and 800b Figure 11C The auxiliary platform sections 800a and 800b can be connected to each other and to the main platform sections 710a and 710b to form an extension 805 of the main platform 705. Each of the auxiliary platform sections 800a and 800b includes first and second side surfaces 812a and 812b and a radially inner side surface 812c. The first and second side surfaces 812a and 812b and the radially inner side surface 812c each define a set of notches 814a and tabs 814b, which respectively mate (or dock) with the corresponding tabs and notches of the radially outer edges 710c of the other auxiliary platform sections 800a and 800b and the main platform sections 710a and 710b. The first and second sides 812a and 812b of the auxiliary platform sections 800a and 800b also include mating fastener tabs 815a and 815b that are radially aligned with each other, and include features 816a and 816b such as through holes, so that the auxiliary platform sections 800a and 800b can be secured to each other with bolts or other tools.

[0072] Auxiliary platform sections 800a and 800b each define auxiliary legs 820a and 820b extending downwards from the auxiliary platform sections 800a and 800b, respectively, with the circumference of one auxiliary leg 820a being larger than the circumference of the other 820b. The dimensions of the auxiliary legs 820a and 820b ensure that the main platform 705 and its extension 805 are smoothly continuous and planar with each other, thereby preventing the auxiliary platform sections 800a and 800b from tilting under the conditions of the device. Figure 11A-11C As shown, the main platform 705 can have a continuous top surface 830. (As...) Figure 12 As shown, the main platform 705 may have a discontinuous top surface 830, for example, allowing water and debris to fall through the beam-supported structure.

[0073] In one embodiment, during assembly, the leg spacing (LD) between all legs 770a, 770b, 820a, and 820b is 200-250 mm. Structural ribs 840 form a grid along the main platform and auxiliary platform sections on the bottom surface 850 of the system. The rib length RL of any rib segment in the grid is 80-130 mm.

[0074] Applicable Figure 11A-11D The support system of 12 is used to support water tank 702. Figure 11D Extensions (auxiliary platform sections 800a, 800b) can be used to support relatively large water tanks. Without extensions, the system may include 4-6 interconnectable sections. With extensions, the system may include 8-12 interconnectable sections. An angled top surface allows water to drain from the tank and facilitates cleaning. The angle helps prevent dust accumulation at the bottom of the tank, helping to eliminate bacteria generated by dust spillage. A continuous top surface provides the benefit of preventing water blockage in the support system 700. Enclosed / enclosed support legs also provide the benefit of preventing water blockage inside the support system 700. In one embodiment, the legs are configured such that a four-inch conduit, for example, runs in a straight line from one end to the other via up to six path directions. The overall shape of the tray is shown as circular. Figure 11A-11D ) and square ( Figure 12 Of course, other shapes can also be used, including rectangles and hexagons.

[0075] The minimum length / diameter (e.g., excluding extensions) of the support system 700 can be 800 mm, and the maximum length / diameter (e.g., including extensions) can be 1500 mm. The minimum load capacity of the support system 700 (e.g., excluding extensions) can be 350 L, and the maximum load capacity (e.g., including extensions) can be approximately 1000 L. The minimum weight of the support system 700 (e.g., excluding extensions) can be 7 kg, and the maximum weight (e.g., including extensions) can be 13 kg. A square support system 700 can be designed. Figure 12 This allows for a maximum displacement of 0.9 mm under a weight of 12 kg and a stress distribution of 8 MPa. A circular support system of 700 mm can be designed. Figure 11A-11D Thus, with a weight of 11.5 kg and a stress distribution of 15 MPa, a maximum displacement of 2.7 mm can be achieved.

[0076] The trays defined above may include polymer materials. The polymer materials are selected based on desired properties such as thermal stability. Examples of polymer materials include, but are not limited to, polyesters, polycarbonates, polystyrene (such as copolymers of polycarbonate and styrene, blends of polyphenylene ether and polystyrene), polyimides (such as polyetherimides), acrylonitrile-styrene-butadiene copolymers (ABS), polyacrylates, polyalkyl methacrylates (e.g., polymethyl methacrylate (PMMA)), polyolefins (such as polypropylene (PP) and polyethylene, high-density polyethylene (HDPE), low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE)), polyamides (such as polyamide-imides), polyarylates, polysulfones (such as polyarylsulfone, polysulfonamides), polyphenylene sulfide, polytetrafluoroethylene, polyethers (such as polyetherketone (PEK), polyetheretherketone (PEEK), polyethersulfone (PES)), polyacrylic acid, polyacetals, and polybenzoxazoles (such as polybenzothiazides, polybenzothiazides, etc.). Poly(oxadiazole), poly(pyrazindoquinoxaline), polypyrimidine polyimide, polyquinoxaline, benzimidazole, polyhydroxyindole, polyoxyisoindoline (such as polydioxoisoindoline), polytriazine, polypyridazine, polypiperazine, polypyridine, polypiperidine, polytriazole, polypyrazole, polypyrrolidone, polycarborane, polyoxabicyclononane, polydibenzofuran, polyphthalamide, polyacetal, polyanhydride, polyethylene (such as polyethylene ether, polyethylene sulfide, polyvinyl alcohol, polyvinyl ketone, polyethylene halide, polyvinyl nitrile, polyethylene ester, polyvinyl chloride), polysulfonates, polysulfides, polyurea, polyphosphazenes, polysilazane, polysiloxane, fluoropolymers (such as polyvinyl fluoride (PVF), polyvinylidene fluoride (PVDF), polyvinyl fluoride (PVF), fluorinated ethylene-propylene (FEP), polyethylene tetrafluoroethylene (ETFE)), polycarbonate-siloxane block copolymers (such as LEXAN) TMEXL Resin), resorcinol terephthalate (ITR) (such as LEXAN) TM SLX Resin), N-phenylphenol phthaloyl bisphenol (PPP-BP) (such as LEXAN) TM XHT Resin) or a combination of at least one of the above.

[0077] Polymer materials may include polyesters. Polyesters include those derived from aliphatic, cyclic aliphatic, or aromatic diols or mixtures thereof containing about 2-10 carbon atoms, and aliphatic, cyclic aliphatic, or aromatic diacids, and repeating units having the following general formula:

[0078]

[0079] Where R 1 and R 2 Each is independently divalent C1-C 20 Aliphatic groups, C2-C 12 Cycloaliphatic alkyl, or C6-C 24 Aryl. Polyesters can be formed from compositions of terephthalic acid with ethylene glycol and cyclohexanediol, for example, from compositions of terephthalic acid with ethylene glycol, diethylene glycol, and cyclohexanediol. Examples of polyesters include at least one of the following: poly(ethylene terephthalate), spirocyclic glycol-modified polyethylene terephthalate, polycyclohexylenedimethyl terephthalate, poly(1,4-cyclohexylenedimethyl-1,4-cyclohexanedicarboxylate), and polyethylene naphthalate, polycyclohexylenedimethyl terephthalate, polycyclohexylenedimethyl terephthalate, or polyethylene terephthalate containing diethylene glycol. Polyesters may include polyethylene terephthalate ("PET"), such as unmodified PET. Polyesters may include spirocyclic glycol-modified amorphous PET.

[0080] Polymer materials may include polyolefins. The polyolefin includes at least one of homopolymers or copolymers. The polyolefin can have a general structure: C n H 2nWhere n can be 2-20. Polyolefins can include at least one of polyethylene, polypropylene, polyisobutylene, or polynorbornene. Examples of polyethylene include linear low-density polyethylene (LLDPE), high-density polyethylene (HDPE), and medium-density polyethylene (MDPE). Polyolefins can include polyolefin copolymers, such as copolymers of ethylene with at least one of propylene, 1-butene, 1-octene, 1-decene, 4-methylpentene-1, 2-butene, 1-pentene, 2-pentene, 1-hexene, 2-hexene, 3-hexene, norbornene, or dienes (e.g., 1,4-hexadiene, monocyclic or polycyclic dienes). Polyolefin copolymers can include heterogeneous polyolefins. The polymeric material can include polypropylene.

[0081] Polymer materials may include additives. These additives may include at least one of the following: foaming agents, flame retardants, impact modifiers, flow modifiers, fillers (e.g., granular polytetrafluoroethylene (PTFE), glass, carbon, minerals, or metals), reinforcing agents (e.g., glass fibers), antioxidants, heat stabilizers, light stabilizers, ultraviolet (UV) light stabilizers, UV-absorbing additives, plasticizers, lubricants, mold release agents (e.g., release agents), antistatic agents, antifogging agents, antimicrobial agents, colorants (e.g., dyes or pigments), surface effect additives, radiation stabilizers, anti-drip agents (e.g., PTFE-encapsulated styrene-acrylonitrile copolymer (TSAN)), or combinations thereof. For example, a composition of heat stabilizers, release agents, and UV stabilizers may be applied. Typically, additives are applied in amounts known to be effective. When used as a support system for water tanks, polymeric materials may include polyolefins (e.g., polypropylene) and glass fiber fillers. An example of such a material is STAMAX, commercially available from SABIC's Innovative Plastics Business. TM .

[0082] The system disclosed herein includes at least one of the following aspects:

[0083] Aspect 1: A conveying system 100 includes: a pallet 110 formed of plastic, wherein the pallet 110 extends in a height direction 120 from a pallet top plate 130 to a pallet bottom plate 140 to define a pallet height, in a length direction 150 from a pallet front end 160 to a pallet rear end 170 to define a pallet length, and in a width direction 180 from a pallet first side 190 to a pallet second side 200 to define a pallet width, wherein the pallet bottom plate 140 defines a recess 210, the recess 210 defines a recess sidewall 220, the recess sidewall 220 extending in the height direction 120 into the pallet 110, and extending from the pallet bottom plate 140 to a recess base 230 to define a recess depth; and a pad 240 formed of an elastomer, the shape of the pad being complementary to the recess 210, and configured to be detachably fixed within the recess 210 to define pallet legs.

[0084] Aspect 2: The system of any of the foregoing aspects, wherein the groove rib 320 extends in the height direction 120 from the groove base 230 toward the tray bottom plate 140 and forms a grid with the groove rib 320, the grid dividing the groove base 230 into groove grid areas 230a, 230b, wherein the groove rib 320 is configured to engage with the pad groove 330 formed in the pad top surface 250 of the pad 240 when the pad 240 is detachably fixed in the groove 210.

[0085] Aspect 3: The system of any of the foregoing aspects, wherein the groove base 230 defines a groove base bottom 340 and a groove base body 350, wherein the groove base bottom 340 faces the tray bottom plate 140 in the height direction 120, and the groove base body 350 extends from the groove base bottom 340 to the groove base top 360 in the height direction 120 according to the groove base thickness, wherein the groove base top 360 is oriented to face the tray top plate 130 in the height direction 120; and wherein the groove base bottom 340 is configured to engage with the pad top surface 250 when the pad 240 is detachably fixed in the groove 210.

[0086] Aspect 4: The system of any of the foregoing aspects, wherein the recessed base 230 defines a fastener channel 370, wherein the fastener channel is defined by a fastener channel sidewall 380 extending in the height direction 120 from the bottom 340 of the recessed base to the top 360 of the recessed base; wherein the fastener channel 370 is cylindrical, and a diameter of the fastener channel is defined, and wherein the fastener channel 370 is configured to resiliently engage with a fastener protrusion 390 extending in the height direction 120 from the pad top surface 250, wherein the shape of the fastener protrusion 390 conforms to the fastener channel 370 for fitting therein.

[0087] Aspect 5: The system of any of the foregoing aspects, wherein a plurality of fastener channels 370a and 370b are formed in each of the groove grid areas 230a and 230b, respectively; wherein the fastener channels 370a and 370b are of the same size; or the diameter of the fastener channel 370a and 370b adjacent to any one of the first side 190 or the second side 200 of the tray is larger than the diameter of the other fastener channels 370a and 370b; and the fastener channels 370a and 370b are respectively configured to elastically engage with fastener protrusions 390a and 390b, the fastener protrusions extending upward from the pad top surface 250 in the height direction 120, wherein the shape of the fastener protrusions 390a and 390b is consistent with that of each fastener channel 370a and 370b for fitting therein.

[0088] Aspect 6: The system of any of the foregoing aspects, wherein the pallet 110 defines a fork entry grid 460 between the pallet top plate and the bottom plate 130, 140, wherein the fork entry grid 460 defines a first set of fork entries 460a and a second set of fork entries 460b, wherein the first set of fork entries 460a extends from the front end 160 of the pallet to the rear end 170 of the pallet in the length direction 150; and the second set of fork entries 460b extends from a first side 190 of the pallet to a second side 200 of the pallet in the width direction 180, wherein along the first side 190 and On the second side 200 of the tray, the first and second sets of grooves 210a and 210b are distributed along the length direction 150, respectively, so as to be located in front of, in the middle of and behind the second set of fork inlets 460b, and offset from the first set of fork inlets 460a in the width direction 180; and the first and second sets of grooves 210a and 210b are respectively configured to receive the first and second sets of pads 240a and 240b, and wherein the shapes of the first and second sets of pads 240a and 240b are consistent with the first and second sets of grooves 210a and 210b for fitting into them.

[0089] Aspect 7: The system of any of the foregoing aspects, wherein a third set of grooves 210c is distributed along the length direction 150 along the central portion 470 of the tray 110, thereby being located in front of, in the middle of and behind the first set of fork inlets 460b, and offset from the first set of fork inlets 460a in the width direction; and the third set of grooves 210c is configured to receive a third set of pads 240c, and wherein the shape of the third set of pads 240c is consistent with the third set of grooves 210c for fitting therein.

[0090] Aspect 8: The system of any of the foregoing aspects, wherein the first and second sets of grooves 210a-210b are wider than the third set of grooves 210c, and the first and second sets of pads 240a-240b are wider than the third set of pads 240c, such that the tray 110 is configured to be placed on different chain conveyors, which are respectively equipped with chains at different width positions.

[0091] Aspect 9: A pad 240 for placement in a recess 210 of a tray 110, the pad comprising: a top surface 250, wherein the pad 240 extends from the top surface 250 to the bottom surface 260 in a height direction 120 to define a pad height, the pad 240 extends from a front end 262 to a rear end 264 in a length direction 150 to define a pad length, and the pad 240 extends from a first side 266 to a second side 268 in a width direction 180 to define a pad width; pad ribs 280 extending from the bottom surface 260 in a height direction 120, the pad ribs 280 extending from the front end 262 to the rear end 264 in a length direction 150, and the pad ribs 280 being spaced apart from each other in a width direction 180, such that adjacent pairs of pad ribs 280a, 280b respectively define a chain receiving track 310; and the pad is formed of an elastomer.

[0092] Aspect 10: The pad of aspect 9, wherein the pad 110 defines three chain receiving tracks 310a-310c adjacent to each other in the width direction 180, and wherein the intermediate pad ribs 280b1, 280b2 are the same or thinner than the outer pad ribs 280a1, 280a2, and / or harder than the outer pad ribs 280a1, 280a2.

[0093] Aspect 11: A pad according to any one of Aspects 9-10, wherein the pad top surface 250 defines a pad groove 330 extending into the pad 110 in the height direction; and the pad groove 330 divides the pad top surface 250 into pad grid areas 250a, 250b, and the pad grid areas are respectively configured to engage with groove ribs 320 extending from the groove 210 of the tray 110 in the height direction 120.

[0094] Aspect 12: A pad according to any one of Aspects 9-11, wherein a fastener protrusion 390 extends from a pad top surface 250 in the height direction; the fastener protrusion 390 defines a protrusion neck 400 having a cylindrical shape defining a neck diameter, wherein the protrusion neck 400 extends from the pad top surface 250 to a protrusion neck tip 410 in the height direction 120 at the neck height; an anchor head 420 is formed at the protrusion neck tip 410; and the anchor head 420 defines a ring with a diameter greater than the diameter of the fastener channel, wherein the anchor head 420 extends from the protrusion neck tip 410 to an anchor head tip 425 in the height direction 120 at the anchor head height, wherein the anchor head 420 is configured to be elastically deformable and recoverable, thereby anchoring the pad 240 to the tray 110.

[0095] Aspect 13: The pad of any one of Aspects 9-12, wherein the fastener protrusion 390 defines a protrusion groove 430 extending through the protrusion neck 400 and the anchor head 420, such that the anchor head 420 is configured to be resiliently compressible.

[0096] Aspect 14: The pad of any of the foregoing aspects, wherein a plurality of fastener protrusions 390a and 390b are formed in the pad grid areas 250a and 250b, respectively; at least two fastener protrusions 390a and 390b have different neck diameters from each other.

[0097] Aspect 15: A method comprising: placing an elastic pad in a groove formed along the bottom plate of a plastic pallet, wherein the pallet is configured to transport goods; and removing the pad from the groove after transporting the goods.

[0098] Aspect 16: A support system 700 includes: a main platform 705 defining a plastic tray, the main platform being formed by main platform segments 710a and 710b connectable to each other, the main platform segments 710a and 710b each including a first side 730 and a second side 740, the first side 730 and the second side 740 defining a set of notches 750 and tabs 760 respectively, thereby matching the tabs and notches of other main platform segments 710a and 710b to connect adjacent main platform segments 710a and 710b to each other, wherein the main platform segments 710a and 710b define main legs 770a and 770b extending downward therefrom, wherein the main legs 770a and 770b... The dimensions of 0a and 770b create a main slope 775 along the main platform 705, wherein the main slope can be 0.5-5 degrees, for example, 1 degree; and auxiliary platform sections 800a and 800b connected to each other and connected to the main platform sections 710a and 710b, thereby forming an extension 805 of the main platform 705, wherein the auxiliary platform sections 800a and 800b define auxiliary legs 820a and 820b extending downward therefrom, wherein the dimensions of the auxiliary legs 820a and 820b make the main platform 705 and the extension 805 of the main platform 705 smooth and continuous and planar with each other, wherein the main platform 705 has a circular or rectangular shape; and wherein the main platform 705 has a continuous or discontinuous top surface 830.

[0099] Generally, embodiments of the invention may alternately include, consist of, or consist substantially of any suitable components disclosed herein. Embodiments may also be additionally or alternatively combined to circumvent or substantially circumvent any components, materials, ingredients, adjuvants, or substances used in prior art compositions or those not essential for achieving the function and / or objectives of the invention. Endpoints of all ranges for the same component or property are also included and can be combined independently (e.g., the range "less than or equal to 25 wt% or 5-20 wt%" includes the endpoints of the "5-25 wt%" range and all intermediate values, etc.). Disclosing a narrower range or more specific group in addition to a broader range is not an abandonment of the broader range or larger group. "Composition" includes blends, mixtures, alloys, reaction products, etc. Furthermore, the terms "first," "second," etc., herein do not indicate any order, quantity, or importance, but are used to indicate that one element is distinct from another. The definite and indefinite articles herein do not indicate quantity limitation but should be understood to include both singular and plural unless otherwise stated herein or clearly contradicted by the context. "Or" refers to "and / or". The suffix "(s)" used herein is used to include both the singular and plural forms of the term it modifies, thereby including one or more of that term (e.g., membrane(s) includes one or more membranes). Throughout the specification, when referring to "one embodiment," "another embodiment," "implementation," "aspect," etc., it means that a particular element (e.g., feature, structure, and / or characteristic) described in relation to that embodiment is included in at least one embodiment described herein, and may be present or not present in other embodiments. Furthermore, it should be understood that the elements may be combined in any suitable manner in different embodiments.

[0100] Unless otherwise stated, the terms "front," "back," "bottom," and / or "top" as used herein are for descriptive convenience only and are not limited to any particular location or spatial orientation. "Optional" or "optionally" means that an event or situation subsequently described may or may not occur, including both scenarios where the event occurs and scenarios where the event does not occur. Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. "Composition" includes blends, mixtures, alloys, reaction products, etc.

[0101] All cited patents, patent applications, and other references are incorporated herein by reference in their entirety. However, if any term in this application contradicts or conflicts with a term in an cited reference, the term in this application shall take precedence over the conflicting term in the cited reference.

[0102] While specific implementations have been described, alternatives, modifications, variations, improvements, and basic equivalents that are not currently foreseen may exist for the applicant or others skilled in the art. Therefore, the appended claims, which are submitted and may be modified, are intended to encompass all such alternatives, modifications, variations, improvements, and basic equivalents.

Claims

1. A transport system (100) comprising: a tray (110) formed of plastic, wherein the tray (110) extends in a height direction (120) from a tray top panel (130) to a tray bottom panel (140) to define a tray height, in a length direction (150) from a tray front end (160) to a tray rear end (170) to define a tray length, and in a width direction (180) from a tray first side (190) to a tray second side (200) to define a tray width, wherein the tray bottom panel (140) defines a recess (210), the recess (210) defining a recess sidewall (220), the recess sidewall (220) extending in the height direction (120) into the tray (110) and from the tray bottom panel (140) to a recess base (230) to define a recess depth; wherein recess ribs (320) extend in the height direction (120) from the recess base (230) toward the tray bottom panel (140), wherein the recess ribs (320) form a grid, the grid dividing the recess base (230) into recess grid regions (230a, 230b), wherein the recess base (230) defines a recess base bottom (340) facing in the height direction (120) toward the tray bottom panel (140) and a recess base body (350) extending in the height direction (120) from the recess base bottom (340) to a recess base top (360) by a recess base thickness, wherein the recess base (230) defines a fastener channel (370), wherein the fastener channel is defined by a fastener channel sidewall (380) extending in the height direction (120) from the recess base bottom (340) to the recess base top (360), and wherein the fastener channel (370) is cylindrical and defines a fastener channel diameter; and a pad (240) formed of an elastomer, the pad being complementary in shape to the recess (210) and configured to be removably secured within the recess (210) to define a tray foot, wherein the recess ribs (320) are configured to engage recess grooves (330) formed in a pad top surface (250) of the pad (240) when the pad (240) is removably secured within the recess (210), wherein the recess base bottom (340) is configured to engage the pad top surface (250) when the pad (240) is removably secured within the recess (210), and wherein the fastener channel (370) is configured to elastically engage a fastener protrusion (390) extending in the height direction (120) from the pad top surface (250), wherein the fastener protrusion (390) is complementary in shape to the fastener channel (370) to fit therein. ​ 2. The system of claim 1, wherein: a plurality of fastener channels (370a, 370b) are formed in each recess grid area (230a, 230b), respectively; wherein: the fastener channels (370a, 370b) are identical in size to each other; or the diameter of the fastener channels (370a, 370b) adjacent to either the tray first side (190) or the tray second side (200) is larger than the diameter of the other fastener channels (370a, 370b); and the fastener channels (370a, 370b) are respectively configured to elastically engage with a plurality of fastener protrusions (390a, 390b) extending upwardly from the mat top surface (250) in the height direction (120), wherein the fastener protrusions (390a, 390b) are shaped to fit into the fastener channels (370a, 370b), respectively.

3. The system of any of the preceding claims, wherein: the tray (110) defines a fork entry grid (460) between the tray top panel (130) and the bottom panel (140), wherein the fork entry grid (460) defines a first set of fork entries (460a) and a second set of fork entries (460b), wherein the first set of fork entries (460a) extends in the length direction (150) from the tray front end (160) to the tray rear end (170); and the second set of fork entries (460b) extends in the width direction (180) from the tray first side (190) to the tray second side (200), wherein: the first set of recesses (210a) and the second set of recesses (210b) are respectively distributed along the length direction (150) along the tray first side (190) and the tray second side (200) so as to be located forward, intermediate, and rearward of the second set of fork entries (460b) and staggered in the width direction (180) from the first set of fork entries (460a); and the first set of recesses (210a) and the second set of recesses (210b) are respectively configured to receive the first set of mats (240a) and the second set of mats (240b), and wherein the first set of mats (240a) and the second set of mats (240b) are shaped to fit into the first set of recesses (210a) and the second set of recesses (210b), respectively.

4. The system of claim 3, wherein: a third set of recesses (210c) are distributed along the length direction (150) along a central portion (470) of the tray (110) so as to be located forward, intermediate, and rearward of the first set of fork entries (460b) and staggered in the width direction from the first set of fork entries (460a); and the third set of recesses (210c) are configured to receive a third set of mats (240c), and wherein the third set of mats (240c) are shaped to fit into the third set of recesses (210c).

5. The system of claim 4, wherein: The first and second set of grooves (210a, 210b) are wider than the third set of grooves (210c), and the first and second set of pads (240a, 240b) are wider than the third set of pads (240c), so that the tray (110) is arranged to be placed on different chain conveyors, which are respectively provided with chains at different width positions.

6. A pad (240) for placement in a groove (210) of a tray (110), the pad comprising: a pad top surface (250), wherein: the pad (240) extends in a height direction (120) from the pad top surface (250) to a pad bottom surface (260) to determine a pad height, the pad (240) extends in a length direction (150) from a pad front end (262) to a pad rear end (264) to determine a pad length, and the pad (240) extends in a width direction (180) from a pad first side (266) to a pad second side (268) to determine a pad width; the pad ribs (280) extend in the height direction (120) from the pad bottom surface (260), the pad ribs (280) extend in the length direction (150) from the pad front end (262) to the pad rear end (264), and the pad ribs (280) are spaced from each other in the width direction (180) so that each pair of adjacent pad ribs (280a, 280b) respectively determines a chain receiving track (310); and the pad is formed from an elastomer, wherein the pad (240) determines three chain receiving tracks (310a-310c) adjacent to each other in the width direction (180), and wherein the intermediate pad ribs (280b1, 280b2) are of the same or thinner thickness and / or are stiffer than the outer pad ribs (280a1, 280a2), wherein the fastener protrusion (390) extends in the height direction from the pad top surface (250); wherein the fastener protrusion (390) determines a protrusion neck (400) having a cylindrical shape determining a neck diameter, wherein the protrusion neck (400) extends in the height direction (120) from the pad top surface (250) to a protrusion neck top end (410) by a neck height; wherein an anchor head (420) is formed at the protrusion neck top end (410); and wherein the anchor head (420) determines a ring having a diameter larger than the fastener channel diameter, wherein the anchor head (420) extends in the height direction (120) from the protrusion neck top end (410) to an anchor head top end (425) by an anchor head height, wherein the anchor head (420) is arranged to be elastically deformable and restorable to anchor the pad (240) to the tray (110).

7. The pad of claim 6, wherein: the pad top surface (250) determines a pad groove (330) extending into the pad (240) in the height direction; and the pad top surface (250) determines a pad groove (330) extending into the pad (240) in the height direction; and The pad grooves (330) divide the pad top surface (250) into pad grid areas (250a, 250b), and these pad grid areas are respectively arranged to engage with the recess ribs (320) extending from the recesses (210) of the pallet (110) in the height direction (120).

8. The pad of claim 7, wherein: The fastener protrusion (390) defines a protrusion groove (430) extending through a protrusion neck (400) and an anchor head (420), such that the anchor head (420) is arranged to be elastically compressible.

9. The pad of any one of claims 7-8, wherein: A plurality of fastener protrusions (390a, 390b) are respectively formed in the pad grid areas (250a, 250b); At least two fastener protrusions (390a, 390b) have neck diameters different from each other.

10. A method of using the pad of claim 6, comprising: placing the pad (240) in the recesses (210) formed along the bottom plate of the pallet (110), wherein the pallet (110) is arranged to transport goods; and removing the pad from the recesses after the goods are transported.

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