Pallet Box

Abstract

The present application discloses a pallet box. The pallet box includes a chassis and a wall body; the chassis includes a load-bearing portion and a support member; the support member is located below the load-bearing portion, and the two support members are arranged in parallel; the bottom end of the wall body has two wall pivot axes, which protrude outward in opposite directions. The wall body is pivotally connected to the support member about the wall pivot axes between an upright position and a horizontal position, and is movably connected to the support member via the first end of the support member along the length direction of the support member between the horizontal position and the storage position. According to the pallet box of the present application, when the pallet box is in use, the end walls and side walls can be stored in the chassis for unloading, so that the end walls and side walls will not be lost.

Description

Technical Field

[0001] The present application relates to containers, in particular to pallet boxes. Background Art

[0002] Conventional pallet boxes include a chassis, side walls, and end walls. The side walls and end walls are detachably pivotally connected to the chassis. When the pallet box is folded, the side walls and end walls overlap the chassis. Consequently, during use, a side wall or end wall may be removed, and the removed side wall or end wall may not be located on the chassis, potentially leading to the possibility of loss.

[0003] To this end, the present application provides a pallet box to at least partially solve the above problems. Summary of the Invention

[0004] The Summary of the Invention introduces a series of simplified concepts that will be further described in the Specific Examples section. The Summary of the Invention section of this application is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0005] In order to at least partially solve the above technical problems, the present application provides a pallet box, which includes:

[0006] Chassis, the chassis includes:

[0007] a load-bearing portion; and

[0008] A supporting member, the supporting member is located below the bearing portion, and the two supporting members are arranged in parallel; and

[0009] The wall body has two wall pivot axes at the bottom end of the wall body, and the two wall pivot axes protrude outward in opposite directions. The wall body is pivotally connected to the support member around the wall pivot axes between the upright position and the flat position, and is movably overlapped to the support member via the first end of the support member along the length direction of the support member between the flat position and the storage position.

[0010] According to the pallet box of the present application, when the pallet box is in use, the end walls and the side walls can be stored in the chassis for unloading, so that the end walls and the side walls will not be lost.

[0011] Optionally, the wall body includes a side wall and an end wall, the axis of the end wall pivot axis of the end wall is parallel to the first horizontal direction, and the axis of the side wall pivot axis of the side wall is parallel to the second horizontal direction.

[0012] The supporting members include side supporting members and end supporting members. The length direction of the side supporting members is parallel to the first horizontal direction for supporting the side walls. The length direction of the end supporting members is parallel to the second horizontal direction for supporting the end walls. The side supporting members and the end supporting members are arranged in sequence along the height direction of the chassis.

[0013] Optionally, the side wall includes a first side wall and a second side wall, and the side support member includes a first support member and a second support member sequentially arranged along the height direction of the chassis to support the first side wall and the second side wall respectively, and the first end of the first support member and the first end of the second support member are respectively located at two ends of the chassis along the first horizontal direction.

[0014] The end wall includes a first end wall and a second end wall, and the end support member includes a third support member and a fourth support member arranged in sequence along the height direction of the chassis to support the first end wall and the second end wall respectively, and the first end of the third support member and the first end of the fourth support member are respectively located at the two ends of the chassis along the second horizontal direction.

[0015] Optionally, the chassis is further provided with a positioning block, which is fixedly connected to the supporting member and located at an end of the supporting member away from the first end, so as to block the wall located at the storage position.

[0016] Optionally, the chassis is further provided with a limit stop, which is fixedly provided at the first end to prevent the pivot axis of the wall from leaving the supporting member.

[0017] Optionally, at least one of the two limit stops located at two supporting members for supporting a wall body is detachably provided.

[0018] Optionally, the chassis also includes a limiting member and a limiting shaft, the limiting member is located above the supporting member, and the limiting member is pivotally arranged between a limiting position and a leaving position through the limiting shaft. When the limiting member is in the limiting position, the minimum dimension between the end of the limiting member away from the first end and the bottom wall of the supporting member is less than the thickness of the wall body, so that the limiting member can prevent the wall body in the storage position from moving toward the first end.

[0019] Optionally, the chassis further comprises a linkage member and a linkage shaft located in the chassis, wherein the linkage member is rotatably arranged between a stop position and a rest position via the linkage shaft.

[0020] When one of the side walls moves to the storage position, the linkage member can be pushed to the stop position to enter above the bottom wall of the support member for supporting the other side wall, so that the linkage member can block the other side wall in the storage position, and / or

[0021] When one of the end walls moves to the storage position, the linkage member can be pushed to the stop position to enter above the bottom wall of the support member supporting the other end wall, so that the linkage member can block the other end wall in the storage position.

[0022] Optionally, the wall body has a guide surface, and along the height direction of the wall body, the guide surface is located on the side of the wall body lower beam close to the wall body upper beam and connected to the wall body lower beam, and the end of the guide surface away from the wall body upper beam is flush with the inner surface of the wall body box, and the guide surface is inclined in the height direction of the wall body. Along the thickness direction of the wall body, the end of the guide surface away from the wall body upper beam is closer to the inner side of the wall body than the other end close to the wall body upper beam.

[0023] When the wall is in the storage position, the guide surface is located at the limiting member along the width direction of the wall. During the process of the wall moving from the storage position to the flat position, the guide surface is used to guide the movement of the limiting member to avoid the limiting member blocking the lower beam of the wall.

[0024] Optionally, the chassis further includes a fork-lifting portion, which is located below the load-bearing portion and has a slideway gap between the fork-lifting portion and the load-bearing portion, and the support member is located in the slideway gap.

[0025] Optionally, the corners of the chassis have force transmission parts, which include an upper force transmission part, a horizontal force transmission part, and a lower force transmission part. The horizontal force transmission part is horizontally arranged and fits the lower surface of the higher one of the side support member and the end support member. The upper force transmission part and the lower force transmission part are both parallel to the height direction of the chassis and are connected to the horizontal force transmission part. The upper force transmission part is located on the outside of the horizontal force transmission part and is connected to the load-bearing part. The lower force transmission part is located on the outside of the horizontal force transmission part and is connected to the fork-lifting part. The lower force transmission part and the upper force transmission part are perpendicular to each other.

[0026] Optionally, a first stacking block is provided at a corner of the bearing part, a support leg is provided at a corner of the fork-lifting part, the upper force transmitting part is connected to the frame of the bearing part and the first stacking block, and the lower force transmitting part is connected to the support leg.

[0027] Optionally, the end wall has a second stacking block connected to the end column of the end wall, and when the pallet box is in an assembled state, part of the second stacking block is overlapped to the first stacking block.

[0028] Optionally, the end wall further comprises an anti-expansion barrier wall, and when the pallet box is in an assembled state, the anti-expansion barrier wall is located on the inner side of a portion of the first stacking block.

[0029] Optionally, the force transmission member has a long connecting plate avoidance groove, and when the pallet box is in an assembled state, the lower end of the end wall is located in the long connecting plate avoidance groove.

[0030] Optionally, the pallet box further includes a latch, which is movably connected to the side wall along the height direction of the side wall, the side wall lower beam of the side wall has a first retaining hole, and the load-bearing side beam of the load-bearing portion has a second retaining hole. When the side wall is in an upright position, the latch can pass through the first retaining hole and the second retaining hole in sequence to keep the side wall in the upright position.

[0031] Optionally, the corners of the bearing portion have avoidance portions, and when the pallet box is in an assembled state, the side columns of the side walls are located in the avoidance portions.

[0032] Optionally, the end face of the side column of the side wall away from the center of the side wall along the width direction of the side wall has a connecting hole, and the end column of the end wall is provided with a connecting pin, which protrudes from the inner surface of the end wall along the thickness direction of the end wall. When the pallet box is in an assembled state, the connecting pin enters the connecting hole to prevent the end wall from moving up and down relative to the side wall.

[0033] Optionally, when the pallet box is in an assembled state, the position height of the end wall upper beam of the end wall is higher than the position height of the side wall upper beam, and a third stacking block is provided at the top of the end column of the end wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to make the advantages of the present application more easily understood, the present application briefly described above will be described in more detail with reference to specific embodiments shown in the accompanying drawings. It will be understood that these drawings depict only typical embodiments of the present application and are therefore not to be considered as limiting the scope of protection thereof. The accompanying drawings describe and explain the present application with additional specificity and detail.

[0035] Figure 1 is a perspective schematic diagram of a pallet box according to a preferred embodiment of the present application in one direction, wherein the pallet box is in an assembled state;

[0036] Figure 2 for Figure 1 A partial enlarged schematic diagram of the pallet box at point A;

[0037] Figure 3 for Figure 1 A partial enlarged schematic diagram of point B of the pallet box;

[0038] Figure 4 for Figure 1 A partial enlarged schematic diagram of point C of the pallet box;

[0039] Figure 5 for Figure 1 A partial enlarged schematic diagram of point D of the pallet box;

[0040] Figure 6 for Figure 1 A three-dimensional schematic diagram of the pallet box from another direction, wherein the pallet box is in an assembled state;

[0041] Figure 7 for Figure 6 A partial enlarged schematic diagram of position E of the pallet box;

[0042] Figure 8 for Figure 6 A partial enlarged schematic diagram of point F of the pallet box;

[0043] Figure 9 for Figure 6 A partial enlarged schematic diagram of position G of the pallet box;

[0044] Figure 10 for Figure 6 A partial enlarged schematic diagram of the H portion of the pallet box;

[0045] Figure 11 for Figure 6 A partial enlarged schematic diagram of location I of the pallet box;

[0046] Figure 12 for Figure 6 A partial enlarged schematic diagram of position J of the pallet box;

[0047] Figure 13 for Figure 6 A partial enlarged schematic diagram of the K portion of the pallet box;

[0048] Figure 14 for Figure 1 A three-dimensional schematic diagram of the pallet box from another direction, wherein the pallet box is in a storage state;

[0049] Figure 15 for Figure 1 A three-dimensional schematic diagram of the chassis of the pallet box in one direction;

[0050] Figure 16 for Figure 15 A partial enlarged schematic diagram of the L portion of the chassis of the pallet box;

[0051] Figure 17 for Figure 15 A partial enlarged schematic diagram of position M of the chassis of the pallet box;

[0052] Figure 18 for Figure 1 A three-dimensional schematic diagram of the chassis of the pallet box from another direction;

[0053] Figure 19 for Figure 18 A partial enlarged schematic diagram of position N of the chassis of the pallet box;

[0054] Figure 20 for Figure 18 A partial enlarged schematic diagram of position O of the chassis of the pallet box;

[0055] Figure 21 for Figure 1 A three-dimensional schematic diagram of the chassis of the pallet box from another direction;

[0056] Figure 22 for Figure 21 A partial enlarged schematic diagram of position P of the chassis of the pallet box;

[0057] Figure 23 for Figure 21 A partial enlarged schematic diagram of position Q on the chassis of the pallet box;

[0058] Figure 24 for Figure 1 A three-dimensional schematic diagram of the chassis of the pallet box from another direction;

[0059] Figure 25 for Figure 24 A partial enlarged schematic diagram of position R of the chassis of the pallet box;

[0060] Figure 26 for Figure 24 A partial enlarged schematic diagram of position S of the chassis of the pallet box;

[0061] Figure 27 for Figure 1 A three-dimensional schematic diagram of a first side wall of a pallet box;

[0062] Figure 28 for Figure 1 A three-dimensional schematic diagram of a second side wall of a pallet box;

[0063] Figure 29 for Figure 28 A partial enlarged schematic diagram of the T portion of the second side wall of the pallet box;

[0064] Figure 30 for Figure 28 A partial enlarged schematic diagram of the U portion of the second side wall of the pallet box;

[0065] Figure 31 for Figure 1 A three-dimensional schematic diagram of a first end wall of a pallet box;

[0066] Figure 32 for Figure 1 A perspective schematic diagram of a second end wall of the pallet box;

[0067] Figure 33 for Figure 32 A partial enlarged schematic diagram of the V portion of the second end wall of the pallet box;

[0068] Figure 34 for Figure 32 A partial enlarged schematic diagram of position W of the second end wall of the pallet box;

[0069] Figure 35 for Figure 1 A perspective schematic diagram of the pallet box from another direction, wherein the pallet box is in a stowed state, showing the second end wall being stowed in the chassis;

[0070] Figure 36 for Figure 1 A perspective schematic diagram of the pallet box from another direction, wherein the pallet box is in a stowed state, showing the end wall being stowed in the chassis;

[0071] Figure 37 for Figure 36 A partial enlarged diagram of the X portion of the pallet box;

[0072] Figure 38 for Figure 1 A partially enlarged schematic diagram of a limiting member of a perspective view of the pallet box from another direction, wherein the pallet box is in a stowed state, showing that the side walls are stowed in the chassis; and

[0073] Figure 39 for Figure 1 A three-dimensional schematic diagram of the pallet box from another direction, wherein the pallet box is in a stored state, showing that the side walls are stored in the chassis.

[0074] Description of Reference Numerals

[0075] 100: Chassis 110: Load-bearing part

[0076] 111: Covering plate 112: Load-bearing side beam

[0077] 113: load-bearing end beam 114: first stacking block

[0078] 115: Stacking block groove 116: Latch tube

[0079] 117: Avoidance part 118: Load-bearing support plate

[0080] 120: First support member 121: Left support member

[0081] 122: Right support member 123: Support member bottom wall

[0082] 124: Support member wall 125: First fixed limit stop

[0083] 126: First movable limit stop 127: Upper retaining wall

[0084] 128: vertical retaining wall 130: second supporting member

[0085] 135: Second fixed limit stop 136: Second movable limit stop

[0086] 140: Third support member 145: Third fixed limit stop

[0087] 146: Third movable limit stop 149: Movable limit stop groove

[0088] 150: Fourth support member 155: Fourth fixed limit stop

[0089] 156: Fourth movable limit stop 160: Limiting component

[0090] 161: Limiting shaft 162: Limiting component

[0091] 163: Lock limit end 164: Lock operation end

[0092] 165: Limiting side wall 166: Limiting bottom wall

[0093] 167: Limiting torsion spring 168: Limiting connecting plate

[0094] 170: linkage assembly 171: linkage shaft

[0095] 172: Linkage sleeve 173: Linkage component

[0096] 174: Hook plate bottom wall 175: Hook plate vertical wall

[0097] 176: Linkage connecting plate 180: Force transmission piece

[0098] 181: horizontal force transmission part 182: upward force transmission part

[0099] 183: Lower transmission part 184: Corner wall

[0100] 185: Limiting platform 186: First groove

[0101] 187: Second groove 189: Long connecting plate avoidance groove

[0102] 190: Fork lift 191: Fork lift side beam

[0103] 192: Fork lift end beam 200: Side wall

[0104] 210: First side wall 220: Second side wall

[0105] 230: Side column 231: Side wall pivot axis

[0106] 232: Pivot shaft connector 233: Side column through hole

[0107] 234: Connecting hole 235: First side column

[0108] 236: Second side column 240: Side wall lower beam

[0109] 250: side vertical beam 260: side wall upper beam

[0110] 300: End wall 310: First end wall

[0111] 320: Second end wall 330: End column

[0112] 331: End wall pivot axis 332: First long connecting plate

[0113] 333: Second long connecting plate 334: Anti-expansion retaining wall

[0114] 335: Reinforcement plate 336: Keyhole

[0115] 337: End column reinforcement 338: Connecting pin

[0116] 339: The third stacking block 340: The end wall lower beam

[0117] 350: end vertical beam 360: end wall upper beam

[0118] 370: Second stacking block 410: Lock front support seat

[0119] 420: Lock rear support 430: Lock rod

[0120] 440: Lock handle 450: Lock guard

[0121] 460: Lock handle fixing 510: Latch rod

[0122] 511: Latch handle 520: Latch seat

[0123] 521: Latch handle positioning groove 530: Latch spring

[0124] 601: Positioning block 602: Inclined guide

[0125] 603: Support plate 604: Bolt

[0126] 605: Leg 606: Lock beam DETAILED DESCRIPTION

[0127] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present application. However, it will be apparent to those skilled in the art that the present application embodiments can be implemented without one or more of these details. In other examples, some technical features well known in the art are not described to avoid confusion with the present application embodiments.

[0128] The preferred embodiments of the present application are described below with reference to the accompanying drawings. It should be noted that the terms "upper", "lower" and similar expressions used herein are for illustrative purposes only and are not intended to be limiting.

[0129] In this document, ordinal numbers such as “first” and “second” cited in this application are merely identifiers and do not have any other meanings, such as a specific order, etc.

[0130] To thoroughly understand the embodiments of the present application, a detailed structure will be provided in the following description. Obviously, the implementation of the embodiments of the present application is not limited to the specific details familiar to those skilled in the art. The preferred embodiments of the present application are described in detail below, but in addition to these detailed descriptions, the present application may also have other embodiments.

[0131] This application provides a pallet box. Please refer to Figures 1 to 39 The pallet box includes a chassis 100 and a wall body. The wall body includes side walls 200 and end walls 300. There are two side walls 200 and two end walls 300.

[0132] The chassis 100 is generally rectangular. The chassis 100 has a long side and a short side. The long side is longer than the short side. The length direction of the long side is perpendicular to the length direction of the short side. In this embodiment, the length direction of the short side is parallel to the first horizontal direction D1. The length direction of the long side is parallel to the second horizontal direction D2.

[0133] The side wall 200 is pivotally connected to the chassis 100. The width direction of the side wall 200 is parallel to the second horizontal direction D2. The end wall 300 is pivotally connected to the chassis 100. The width direction of the end wall 300 is parallel to the first horizontal direction D1.

[0134] The pallet box has an assembled state and a stored state.

[0135] When the pallet box is in its assembled state, it forms a roughly rectangular parallelepiped structure. The two side walls 200 are located between the two end walls 300. The end walls 300 and the side walls 200 are both perpendicular to the chassis 100. The end walls 300 are perpendicular to the side walls 200. The height directions of the end walls 300 and the side walls 200 are both parallel to the height direction D3 of the chassis 100. The thickness directions of the end walls 300 are parallel to the second horizontal direction D2. The thickness directions of the side walls 200 are parallel to the first horizontal direction D1. In this state, the pallet box can be used to transport goods.

[0136] When the pallet box is in the stored state, the end wall 300 and the side wall 200 are parallel to the chassis 100. At this time, the end wall 300 and the side wall 200 are stored in the chassis 100. In this way, the pallet box is convenient to transport.

[0137] Please refer to Figures 14 to 26The chassis 100 includes a load-bearing portion 110 and a forklift portion 190. The load-bearing portion 110 includes a cover plate 111, load-bearing portion side beams 112, and load-bearing portion end beams 113. The length direction of the load-bearing portion side beams 112 is parallel to the second horizontal direction D2. The length direction of the load-bearing portion end beams 113 is parallel to the first horizontal direction D1. The load-bearing portion side beams 112 and the load-bearing portion end beams 113 form a generally rectangular frame. The cover plate 111 is laid on the upper end of the load-bearing portion 110. Cargo can be placed on the upper surface of the cover plate 111.

[0138] The forklift 190 includes a forklift side beam 191 and a forklift end beam 192. The length of the forklift side beam 191 is parallel to the second horizontal direction D2. The length of the forklift end beam 192 is parallel to the first horizontal direction D1. The forklift side beam 191 and the forklift end beam 192 form a generally rectangular frame. Along the height direction D3 of the chassis 100, the forklift 190 is located below the load-bearing portion 110. Along the height direction D3 of the chassis 100, the forklift 190 is separated from the load-bearing portion 110 by a sliding distance.

[0139] A support leg 605 is provided at a corner of the chassis 100. The fork lift side beam 191 and the fork lift end beam 192 are connected to the support leg 605. The upper surface of the support leg 605, the upper surface of the fork lift side beam 191 and the upper surface of the fork lift end beam 192 are flush.

[0140] The chassis 100 further includes a slide assembly. The slide assembly includes a side slide assembly and an end slide assembly. The side slide assembly includes a first slide assembly and a second slide assembly. The end slide assembly includes a third slide assembly and a fourth slide assembly.

[0141] The first slide assembly includes a first support member 120 (an example of a support member). The second slide assembly includes a second support member 130 (an example of a support member). The third slide assembly includes a third support member 140 (an example of a support member). The fourth slide assembly includes a fourth support member 150 (an example of a support member).

[0142] Along the height direction D3 of the chassis 100 , the first support member 120 , the second support member 130 , the third support member 140 , and the fourth support member 150 are sequentially arranged from top to bottom.

[0143] The support members of the side slide assemblies are side support members. The support members of the end slide assemblies are end support members. Each slide assembly includes two support members. The two support members include a left support member 121 and a right support member 122. The left support member 121 and the right support member 122 each include a support member upright wall 124 and a support member bottom wall 123.

[0144] When the support members are connected to the chassis 100, the support member upright wall 124 of each support member is located to the side of the support member bottom wall 123, away from the center of the chassis 100, along the width direction of the support member. When the support members are connected to the chassis 100, the support member upright wall 124 of each support member is located above the support member bottom wall 123 along the height direction D3 of the chassis 100. When the support members are connected to the chassis 100, the width direction of the support members is parallel to the horizontal direction and perpendicular to the length direction of the support members. The support member bottom wall 123 of each support member is perpendicular to the support member upright wall 124 and is connected to the support member upright wall 124 to form a generally L-shaped structure.

[0145] Specifically, when the support members are connected to the chassis 100, the width directions of the first support member 120 and the second support member 130 are both parallel to the second horizontal direction D2. When the support members are connected to the chassis 100, the width directions of the third support member 140 and the fourth support member 150 are both parallel to the first horizontal direction D1.

[0146] The first support member 120, the second support member 130, the third support member 140, and the fourth support member 150 all include support member upright walls 124. The first support member 120, the second support member 130, and the third support member 140 all include support member bottom walls 123. The upper surfaces of the legs 605 and the upper surfaces of the forklift side beams 191 form the support member bottom walls of the fourth support member 150. As a result, the chassis 100 has a simple structure and is lightweight.

[0147] Preferably, the first support member 120 and the second support member 130 are formed as a single piece by bending a single piece of steel plate. Specifically, the steel plate is first bent to form the support member upright wall 124 and the support member bottom wall 123 of the first support member 120. The free end of the support member bottom wall 123 of the first support member 120 is then bent downward to form a first overlapping wall. The first overlapping wall is parallel to the support member bottom wall 123 of the first support member 120 and adheres to the lower surface of the support member bottom wall 123 of the first support member 120. The free end of the first overlapping wall is then bent downward to form the support member upright wall 124 of the second support member 130. The lower end of the support member upright wall 124 of the second support member 130 is then bent to form the support member bottom wall 123 of the second support member 130.

[0148] This simplifies the structure of the chassis 100. Furthermore, the first overlapping wall abuts against the support member bottom wall 123 of the first support member 120. When the thickness of the steel plate used to make the support member is reduced to reduce weight, the strength of the support member bottom wall 123 of the first support member 120 can be increased, thereby allowing the later-described position-limiting connecting plate 168 and linkage connecting plate 176 to be connected to the stronger support member bottom wall 123.

[0149] The support member walls 124 of the third and fourth support members 140, 150 are formed from a single, integrated piece of bent steel plate. Specifically, the steel plate is first bent to form the support member walls 124 and the support member bottom wall 123 of the third support member 140. The free end of the support member bottom wall 123 of the third support member 140 is then bent downward to form a second overlapping wall. This second overlapping wall is parallel to the support member bottom wall 123 of the third support member 140 and adheres to the lower surface of the support member bottom wall 123 of the third support member 140. The free end of the second overlapping wall is then bent downward to form the support member wall 124 of the fourth support member 150.

[0150] This simplifies the structure of the chassis 100. Furthermore, the second overlapping wall abuts against the support member bottom wall 123 of the third support member 140. When the thickness of the steel plate used to make the support member is reduced to reduce weight, the strength of the support member bottom wall 123 of the third support member 140 can be increased, thereby allowing the later-described position-limiting connecting plate 168 and linkage connecting plate 176 to be connected to the stronger support member bottom wall 123.

[0151] In each slide assembly, the left support member 121 and the right support member 122 are arranged in parallel. In each slide assembly, along the height direction D3 of the chassis 100, the position of the left support member 121 and the position of the right support member 122 are substantially the same. In each slide assembly, the left support member 121 and the right support member 122 are spaced apart along the width direction of the left support member 121. Thus, in each slide assembly, along the width direction of the support members, the left support member 121 is located at one end of the chassis 100, and the right support member 122 is located at the other end of the chassis 100.

[0152] The length direction of the support member of the side slide assembly is parallel to the first horizontal direction D1, and the length direction of the support member of the end slide assembly is parallel to the second horizontal direction D2.

[0153] Along the first horizontal direction D1, the gap formed by the first end of the first support member 120 and the bearing portion 110 faces one side of the chassis 100, while the gap formed by the first end of the second support member 130 faces the other side of the chassis 100. Along the second horizontal direction D2, the gap formed by the first end of the third support member 140 faces one side of the chassis 100, while the gap formed by the first end of the fourth support member 150 faces the other side of the chassis 100. In other words, along the first horizontal direction D1, the first end of the first support member 120 is located at one end of the chassis 100, and the first end of the second support member 130 is located at the other end of the chassis 100. Along the second horizontal direction D2, the first end of the third support member 140 is located at one end of the chassis 100, while the first end of the fourth support member 150 is located at the other end of the chassis 100.

[0154] like Figures 1 to 13 ,as well as Figures 27 to 39 As shown, the side wall 200 includes a first side wall 210 and a second side wall 220. The end wall 300 includes a first end wall 310 and a second end wall 320. The first side wall 210 corresponds to the first support member 120. The second side wall 220 corresponds to the second support member 130. The first end wall 310 corresponds to the third support member 140. The second end wall 320 corresponds to the fourth support member 150.

[0155] The wall body includes a wall column, a wall pivot axis, and a wall upper beam. The wall pivot axis is connected to the lower end of the wall column. Along the width direction of the wall body, the wall pivot axis protrudes outward from the wall column toward the outside of the wall body, away from the center of the wall body. Each wall body has two wall pivot axes. Along the width direction of the wall body, the two wall pivot axes protrude outward in opposite directions. Specifically, the side wall 200 includes a side column 230, a side wall pivot axis 231, and a side wall upper beam 260. The end wall 300 includes an end column 330, an end wall pivot axis 331, and an end wall upper beam 360.

[0156] Along the width of the wall, the maximum dimension between two upright posts is the maximum upright post dimension, and the maximum dimension between two pivot axes is the maximum axis dimension. In each slide assembly, along the width of the support member, the minimum dimension between two support member bottom walls 123 is the minimum bottom wall dimension, and the minimum dimension between two support member upright walls 124 is the minimum upright wall dimension.

[0157] In the corresponding wall and slideway assemblies, the minimum size of the bottom wall is smaller than the maximum size of the column, the minimum size of the bottom wall is smaller than the maximum size of the shaft, and the minimum size of the vertical wall is larger than the maximum size of the shaft.

[0158] In the corresponding wall and slideway assemblies, the wall pivot axis and wall column overlap the support member bottom wall 123. This allows the wall to rotate around the wall pivot axis between an upright position and a horizontal position. When the wall is in the upright position, the wall is perpendicular to the chassis 100. When the wall is in the horizontal position, the wall upper beam is located outside the chassis 100, and the wall is parallel to the chassis 100.

[0159] When the wall is parallel to the chassis 100, the wall pivot axis can move along the length of the supporting member it overlaps. In this way, the wall can move between a flat position and a storage position through the gap in the corresponding slide assembly. When the wall is in the storage position, the wall is located within the corresponding slide assembly.

[0160] Preferably, please refer to Figure 1 The width of the end wall 300 is parallel to the short side. The width of the side wall 200 is parallel to the long side. The length of the end support member is greater than the length of the side support member. Thus, while the wall body can be accommodated within the chassis 100, the height of the end wall 300 can be made greater than the height of the side wall 200, thereby maximizing the volume of the pallet box.

[0161] Preferably, when the pallet box is in the assembled state, along the height direction D3 of the chassis 100, the end wall upper beam 360 is positioned higher than the side wall upper beam 260. That is, along the height direction D3 of the chassis 100, the upper surface of the end wall upper beam 360 (the end of the end wall upper beam 360 away from the end wall pivot axis 331 along the height direction of the end wall 300) is positioned above the upper surface of the side wall upper beam 260 (the end of the side wall upper beam 260 away from the side wall pivot axis 231 along the height direction of the side wall 200). Thus, while ensuring that the side wall 200 can be accommodated within the chassis 100, the volume of the pallet box can be increased by increasing the height of the end wall 300.

[0162] In an embodiment not shown, the upper surface of the side wall upper beam may also be substantially flush with the upper surface of the end wall upper beam 360 .

[0163] In an embodiment not shown, the width direction of the end wall can also be parallel to the long side. In this case, the width direction of the side wall is parallel to the short side. The length dimension of the side support member is greater than the length dimension of the end support member.

[0164] In an unillustrated embodiment, as needed, only side slide assemblies can be installed within the slide intervals to support the side walls. Alternatively, only end slide assemblies can be installed within the slide intervals to support the end walls. In this case, chassis columns that rise above the upper plane of the load-bearing portion are provided at the corners of the chassis to articulate the walls that cannot be accommodated within the chassis.

[0165] In an embodiment not shown, according to user requirements, only one slide assembly can be provided within the slide interval to accommodate any wall. In this case, a chassis column is provided at the corner of the chassis, which is higher than the upper plane of the load-bearing portion, to articulate the wall that cannot be accommodated in the chassis.

[0166] Preferably, if Figure 3 As shown, the chassis 100 has a load-bearing portion support plate 118. The load-bearing portion support plate 118 connects the first support member 120 and the load-bearing portion 110. As a result, the height of the first support member 120 can be reduced, thereby reducing the weight of the pallet box.

[0167] In this embodiment, when the pallet box is used, the end wall 300 and the side wall 200 can be stored in the chassis 100 for unloading, so that the end wall 300 and the side wall 200 will not be lost.

[0168] In each slide assembly, along the length direction of the support member, the end away from the first end of the support member is the second end of the support member. Figure 3 、 Figure 4 、 Figure 8 、 Figure 16 、 Figure 17 、 Figure 19 、 Figure 22 、 Figure 23 、 Figure 25 、 Figure 35 、 Figure 36 and Figure 39 As shown, the chassis 100 also includes a positioning block 601 corresponding to each supporting member. The positioning block 601 is a flat plate. The plane where the positioning block 601 is located is perpendicular to the length direction of the corresponding supporting member. The positioning block 601 is located at the second end of the corresponding supporting member and is connected to the corresponding supporting member. In the supporting members and positioning blocks 601 that correspond to each other, along the width direction of the supporting member, the positioning block 601 is located on the side of the supporting member vertical wall 124 close to the center of the chassis 100 and is connected to the supporting member vertical wall 124. In the supporting members and positioning blocks 601 that correspond to each other, the positioning block 601 is located above the bottom wall 123 of the supporting member and is connected to the bottom wall 123 of the supporting member.

[0169] In the corresponding wall and slide assemblies, the minimum dimension between two positioning stops 601 connected to the support member along the width direction of the support member is smaller than the maximum dimension of the wall column. In this way, the positioning stops 601 can block the wall in the storage position and prevent it from moving out of the slide assembly from the second end of the support member.

[0170] It will be appreciated that, in an embodiment not shown, one support member in each slide assembly is connected to a positioning stop, while the other support member is not. In this case, in the corresponding wall and slide assemblies, the minimum dimension along the width direction of the support member between the positioning stop connected to one support member and the support member upright of the other support member is less than the maximum dimension of the wall upright.

[0171] In an unillustrated embodiment, the top end of the positioning stop extends toward the first end of the corresponding support member to form a positioning stop wall. That is, the positioning stop is L-shaped. Along the height of the chassis, the minimum distance between the positioning stop wall and the bottom wall of the support member corresponding to the positioning stop is greater than the thickness of the wall. In this way, the positioning stop wall blocks upward movement of the wall, thereby preventing the wall from moving out of the corresponding slide assembly due to jolts during transport of the pallet box. Further preferably, the positioning stop connected to the third support member includes a positioning stop wall to block movement of the first end wall along the height of the chassis.

[0172] The chassis 100 also includes a stopper corresponding to each support member. The stopper is located at the first end of the corresponding support member. For each corresponding support member and stopper, the stopper is located to the side of the support member's vertical wall 124, near the center of the chassis 100, along the width direction of the support member. For each corresponding support member and stopper, the stopper is located above the support member's bottom wall 123.

[0173] In the corresponding wall and slide assemblies, along the width direction of the support member, the minimum dimension between two corresponding stoppers is smaller than the maximum dimension of the wall axis. This prevents the stopper from blocking the pivot axis of the wall in the horizontal position, preventing it from moving out of the slide assembly from the first end of the support member. This prevents the wall from leaving the chassis 100.

[0174] Preferably, Figure 2 、 Figure 4 、 Figure 8 、 Figure 9 、 Figure 16 、 Figure 19 、 Figure 20 、 Figure 23 、 Figure 25 and Figure 26As shown, part of the limit stop includes an upper stop wall 127 and a vertical stop wall 128. The upper stop wall 127 is parallel to the horizontal direction. The vertical stop wall 128 is parallel to the height direction D3 of the chassis 100. The upper stop wall 127 is located above the vertical stop wall 128. Along the length direction of the support member corresponding to the limit stop, the vertical stop wall 128 is located on the side of the upper stop wall 127 away from the center of the chassis 100. The upper stop wall 127 and the vertical stop wall 128 form an L-shaped structure. There is a gap between the upper stop wall 127 and the support member bottom wall 123 of the support member corresponding to the limit stop. The wall pivot axis can enter into the gap. Therefore, the structure of the limit stop is simple.

[0175] Preferably, at least one of the two stoppers corresponding to the two support members of each slide assembly is detachably provided. Thus, by removing the detachable stopper, the wall including the wall pivot axis blocked by the stopper can be removed, thereby facilitating maintenance of the wall.

[0176] like Figures 1 to 4 、 Figures 6 to 9 、 Figures 14 to 26 、 Figures 35 to 39 As shown, the chassis 100 has a force transmission member 180. The force transmission member 180 is located at a corner of the chassis 100. The force transmission member 180 includes a horizontal force transmission portion 181, an upper force transmission portion 182, and a lower force transmission portion 183. Along the height direction D3 of the chassis 100, portions of the upper force transmission portion 182, the horizontal force transmission portion 181, and the lower force transmission portion 183 are arranged from top to bottom. The horizontal force transmission portion 181 is perpendicular to the height direction D3 of the chassis 100. The upper force transmission portion 182 is perpendicular to the second horizontal direction D2. Along the second horizontal direction D2, the upper force transmission portion 182 is located on the outside of the horizontal force transmission portion 181 away from the center of the chassis 100 and is connected to the horizontal force transmission portion 181. The lower force transmission portion 183 is perpendicular to the first horizontal direction D1. Along the first horizontal direction D1, the lower force transmission portion 183 is located on the outside of the horizontal force transmission portion 181 away from the center of the chassis 100 and is connected to the horizontal force transmission portion 181.

[0177] Along the height direction D3 of the chassis 100, the horizontal force transmission portion 181 is located between the second support member 130 and the third support member 140. The second support member 130 is overlapped with the horizontal force transmission portion 181 so that the horizontal force transmission portion 181 supports the second support member 130.

[0178] Along the second horizontal direction D2, the upper force transmitting portion 182 is located on the outer side of the first support member 120 away from the center of the chassis 100 and is connected to the support member upright wall 124 of the first support member 120. Along the second horizontal direction D2, the upper force transmitting portion 182 is located on the outer side of the second support member 130 away from the center of the chassis 100 and is connected to the support member upright wall 124 of the second support member 130.

[0179] Along the first horizontal direction D1, the lower force-transmitting portion 183 is located on the outer side of the third support member 140, away from the center of the chassis 100, and is connected to the support member upright wall 124 of the third support member 140. Along the first horizontal direction D1, the lower force-transmitting portion 183 is located on the outer side of the fourth support member 150, away from the center of the chassis 100, and is connected to the support member upright wall 124 of the fourth support member 150. The lower force-transmitting portion 183 is connected to the support leg 605. This prevents interference between the force-transmitting member 180 and the support members, thereby preventing the force-transmitting member 180 from obstructing the sidewall 200 and end wall 300 from being retracted into the chassis 100.

[0180] The upper force transmitting portion 182 is connected to the supporting portion 110. The force applied to the supporting portion 110 is transmitted to the upper force transmitting portion 182, which is then transmitted to the horizontal force transmitting portion 181, which is then transmitted to the lower force transmitting portion 183, and finally to the supporting leg 605 by the lower force transmitting portion 183, thereby preventing the weaker supporting member from being deformed by the force.

[0181] Preferably, the force transmission member 180 may be a machined part, a welded part, or an integrally formed casting part.

[0182] Preferably, the limit stop includes a fixed limit stop and a movable limit stop. The limit stops corresponding to the two support members of each slide assembly include a fixed limit stop and a movable limit stop. The movable limit stop is detachably provided. The fixed limit stop is part of the force transmission member 180.

[0183] Specifically, a corner wall 184 is provided on the upper portion of the force transmission member 180. The corner wall 184 can be integral with the force transmission member 180. The fixed stoppers include a first fixed stopper 125, a second fixed stopper 135, a third fixed stopper 145, and a fourth fixed stopper 155. The movable stoppers include a first movable stopper 126, a second movable stopper 136, a third movable stopper 146, and a fourth movable stopper 156.

[0184] like Figure 23 As shown, along the second horizontal direction D2, a portion of the corner wall 184 extends near the center of the chassis 100 to form a first fixed stop 125. The first fixed stop 125 is located at the left support member 121 of the first support member 120. The first fixed stop 125 includes an upper stop wall 127 and a vertical stop wall 128.

[0185] Please refer to Figure 4 and Figure 16A first movable stopper 126 is provided at the right support member 122 of the first support member 120. The first movable stopper 126 is connected to the corner wall 184 by a fastener (e.g., a bolt 604). Along the second horizontal direction D2, the first movable stopper 126 is located on the inner side of the portion of the corner wall 184 connected thereto, which is close to the center of the chassis 100. Along the second horizontal direction D2, the portion of the corner wall 184 extends close to the center of the chassis 100 to form a stop platform 185. The first movable stopper 126 includes an upper stopper wall 127 and a vertical stopper wall 128. Along the first horizontal direction D1, the stop platform 185 is located on the outer side of the vertical stopper wall 128 of the first movable stopper 126, away from the center of the chassis 100. The stop platform 185 is located below the upper stopper wall 127 of the first movable stopper 126. In this way, the limiting platform 185 blocks the first movable limiting stop 126 to prevent the first movable limiting stop 126 from rotating around the axis of the fastener.

[0186] like Figure 20 As shown, along the second horizontal direction D2, a portion of the corner wall 184 extends near the center of the chassis 100 to form a second fixed stop 135. The second fixed stop 135 is located at the left support member 121 of the second support member 130. The second fixed stop 135 includes an upper stop wall 127 and a vertical stop wall 128.

[0187] Please refer to Figure 9 and Figure 25 A second movable stopper 136 is provided at the right support member 122 of the second support member 130. The second movable stopper 136 is connected to the corner wall 184 by a fastener (e.g., a bolt 604). Along the second horizontal direction D2, the second movable stopper 136 is located on the inner side of the portion of the corner wall 184 connected thereto, which is closer to the center of the chassis 100. Along the second horizontal direction D2, the portion of the corner wall 184 extends closer to the center of the chassis 100 to form a stop platform 185. The second movable stopper 136 includes an upper stopper wall 127 and a vertical stopper wall 128. Along the first horizontal direction D1, the stop platform 185 is located on the outer side of the vertical stopper wall 128 of the second movable stopper 136, which is farther away from the center of the chassis 100. The stop platform 185 is located below the upper stopper wall 127 of the second movable stopper 136. In this way, the limiting platform 185 blocks the second movable limiting stop 136 to prevent the second movable limiting stop 136 from rotating around the axis of the fastener.

[0188] Please return Figure 3 And refer to Figure 17Along the first horizontal direction D1, a portion of the lower force transmission portion 183 extends near the center of the chassis 100 to form a third fixed stop 145. The third fixed stop 145 is located on the left support member 121 of the third support member 140. The third fixed stop 145 includes a vertical stop wall 128. The upper end of the vertical stop wall 128 of the third fixed stop 145 is connected to the horizontal force transmission portion 181. Thus, the vertical stop wall 128 and the horizontal force transmission portion 181 of the third fixed stop 145 prevent the end wall pivot axis 331 of the first end wall 310 from leaving the third support member 140.

[0189] Please return Figure 2 And refer to Figure 19 A third movable stopper 146 is provided at the right support member 122 of the third support member 140. The third movable stopper 146 is connected to the lower force transmission portion 183 via fasteners (e.g., bolts 604). Along the first horizontal direction D1, the third movable stopper 146 is located inward of the portion of the lower force transmission portion 183 to which it is connected, near the center of the chassis 100. Along the first horizontal direction D1, the portion of the lower force transmission portion 183 extends near the center of the chassis 100, forming a blocking wall. The third movable stopper 146 includes an upper blocking wall 127. Along the second horizontal direction D2, the blocking wall is located at the outer end of the upper blocking wall 127 of the third movable stopper 146, away from the center of the chassis 100. The blocking wall is located below the upper blocking wall 127 of the third movable stopper 146. Thus, the upper blocking wall 127 of the third movable stopper 146 overlaps the blocking wall. The blocking wall and the third movable limit stopper 146 block the end wall pivot shaft 331 of the first end wall 310 from leaving the third supporting member 140 .

[0190] like Figure 8 、 Figure 26 As shown, along the first horizontal direction D1, a portion of the lower force transmission portion 183 extends near the center of the chassis 100 to form a fourth fixed stop 155. The fourth fixed stop 155 is located at the left support member 121 of the fourth support member 150. The fourth fixed stop 155 includes an upper stop wall 127 and a vertical stop wall 128.

[0191] Please return Figure 7 And refer to Figure 22A fourth movable stopper 156 is provided on the right support member 122 of the fourth support member 150. The fourth movable stopper 156 is connected to the lower force transmission portion 183 via fasteners (e.g., bolts 604). Along the first horizontal direction D1, the fourth movable stopper 156 is located inward of the portion of the lower force transmission portion 183 to which it is connected, near the center of the chassis 100. Along the first horizontal direction D1, the portion of the lower force transmission portion 183 extends near the center of the chassis 100 to form a blocking wall. The fourth movable stopper 156 includes an upper blocking wall 127. Along the second horizontal direction D2, the blocking wall is located at the outer end of the upper blocking wall 127 of the fourth movable stopper 156, away from the center of the chassis 100. The blocking wall is located below the upper blocking wall 127 of the fourth movable stopper 156. Thus, the upper blocking wall 127 of the fourth movable stopper 156 overlaps the blocking wall. The blocking wall and the fourth movable limit stopper 156 block the end wall pivot shaft 331 of the second end wall 320 from leaving the fourth supporting member 150 .

[0192] Please refer to Figure 17 、 Figure 20 、 Figure 23 、 Figure 25 and Figure 26 Along the second horizontal direction D2, a first groove 186 is formed on the outer end surface of the corner wall 184, away from the center of the chassis 100. The heads of the bolts 604 connecting the first movable stopper 126 and the second movable stopper 136 are located within the first groove 186. Along the first horizontal direction D1, a second groove 187 is formed on the outer side surface of the lower force transmission portion 183, away from the center of the chassis 100. The heads of the bolts 604 connecting the third movable stopper 146 and the fourth movable stopper 156 are both located within the second groove 187, preventing the bolt heads from protruding from the outer contour of the chassis 100. This facilitates transportation.

[0193] Please refer to Figure 4 、 Figure 8 、 Figure 14 、 Figure 15 、 Figure 22 、 Figure 35 、 Figure 36 and Figure 38 The pallet box further includes a limiting assembly 160. The limiting assembly 160 includes a limiting shaft 161, a limiting member 162, and a limiting torsion spring 167. The chassis 100 has a limiting connecting plate 168. The limiting connecting plate 168 is parallel to the horizontal direction and fixedly connected to the support member. The limiting shaft 161 is fixedly connected to the limiting connecting plate 168.

[0194] The limiting member 162 is a sheet metal component. It is constructed as a C-shaped structure including a limiting bottom wall 166 and a limiting side wall 165. The opening of the limiting member 162 faces upward. The limiting member 162 has a locking limiting end 163 and a locking operating end 164. The limiting side wall 165 of the limiting member 162 has a through hole. The limiting shaft 161 is inserted through the through hole of the limiting side wall 165. This allows the limiting member 162 to rotate about the axis of the limiting shaft 161 between a limiting position and a release position. The through hole is located between the locking limiting end 163 and the locking operating end 164.

[0195] The limiting torsion spring 167 comprises a torsion spring body and two torsion spring legs. The torsion spring body of the limiting torsion spring 167 is sleeved around the limiting shaft 161 and positioned between the two limiting side walls 165. One torsion spring leg of the limiting torsion spring 167 abuts the upper surface of the limiting bottom wall 166. The other torsion spring leg of the limiting torsion spring 167 abuts the limiting connecting plate 168. Thus, the limiting torsion spring 167 is used to apply a force to the limiting member 162. This force causes the limiting member 162 to rotate from the released position toward the restricted position.

[0196] Preferably, the free end of the limiting side wall 165 of the limiting member 162 near the limiting connecting plate 168 connected thereto is bent and extends close to the limiting connecting plate 168 to form a locking positioning wall. When the limiting member 162 is in the limiting position, the locking positioning wall abuts against the limiting connecting plate 168.

[0197] Limiting assemblies 160 are provided in both the side slide assembly and the end slide assembly.

[0198] Please refer to Figure 22 and Figure 38 Regarding the side slide assembly and the limiting assembly 160 located within the side slide assembly, along the first horizontal direction D1, the limiting assembly 160 is located within the chassis 100 and near the first end of the second support member 130. Along the second horizontal direction D2, the limiting connecting plate 168 is located on one side of the support member near the center of the chassis 100. The limiting connecting plate 168 is fixedly connected to the support member bottom wall 123 of the first support member 120. The limiting connecting plate 168 is located above the support member bottom wall 123 of the second support member 130. The limiting connecting plate 168 and the support member bottom wall 123 of the first support member 120 are substantially parallel. The axis of the limiting shaft 161 is parallel to the second horizontal direction D2.

[0199] For the side slide assembly and the limiting assembly 160 located in the side slide assembly, along the first horizontal direction D1, the end of the limiting member 162 close to the center of the chassis 100 is the locking limiting end 163, and the end of the limiting member 162 away from the center of the chassis 100 is the locking operating end 164.

[0200] With respect to the side slide assembly and the limiting assembly 160 located therein, when the limiting member 162 is in the limiting position, the locking positioning wall of the limiting member 162 abuts against the limiting connecting plate 168. At this point, the limiting member 162 is tilted in the first horizontal direction D1, with the locking limiting end 163 located below the limiting connecting plate 168 and the distance between the locking limiting end 163 and the support member bottom wall 123 of the second support member 130 being less than the thickness of the second side wall 220. The locking operating end 164 is located above the limiting connecting plate 168. Thus, the limiting member 162 in the limiting position can block the second side wall 220 in the storage position, preventing it from moving toward the horizontal position.

[0201] Regarding the side slide assembly and the limiting assembly 160 located therein, manually pressing down on the locking operating end 164 rotates the limiting member 162 toward the disengaged position. At this point, along the height direction D3 of the chassis 100, the limiting member 162 is positioned above the second side wall 220, allowing the second side wall 220 to move along the first horizontal direction D1 to the horizontal position.

[0202] like Figure 4 and Figure 35 As shown, regarding the end slide assembly and the stop assembly 160 located therein, the stop assembly 160 is located at the first end of the fourth support member 150 along the second horizontal direction D2. Along the first horizontal direction D1, the stop connecting plate 168 is located on one side of the support member near the center of the chassis 100. The stop connecting plate 168 is fixedly connected to the support member bottom wall 123 of the third support member 140. The stop connecting plate 168 is located above the support member bottom wall 123 of the fourth support member 150. The stop connecting plate 168 and the support member bottom wall 123 of the third support member 140 are substantially parallel. The axis of the stop shaft 161 is parallel to the first horizontal direction D1.

[0203] For the end slide assembly and the limiting assembly 160 located in the end slide assembly, along the second horizontal direction D2, the end of the limiting member 162 close to the center of the chassis 100 is the locking limiting end 163, and the end of the limiting member 162 away from the center of the chassis 100 is the locking operating end 164.

[0204] Regarding the end slide assembly and the limiting assembly 160 located therein, when the limiting member 162 is in the limiting position, the locking positioning wall of the limiting member 162 abuts against the limiting connecting plate 168. At this point, the limiting member 162 is inclined in the second horizontal direction D2, with the locking limiting end 163 located below the limiting connecting plate 168 and the distance between the locking limiting end 163 and the support member bottom wall 123 of the fourth support member 150 being less than the thickness of the second end wall 320. The locking operating end 164 is located above the limiting connecting plate 168. Thus, the limiting member 162 in the limiting position can block the second end wall 320 in the storage position, preventing it from moving toward the horizontal position.

[0205] Regarding the end slide assembly and the limiting assembly 160 located therein, manually pressing down on the locking operating end 164 rotates the limiting member 162 toward the disengaged position. At this point, along the height direction D3 of the chassis 100, the limiting member 162 is located above the second end wall 320, allowing the second end wall 320 to move along the second horizontal direction D2 to the horizontal position.

[0206] Preferably, if Figure 1 、 Figure 28 and Figure 32 , Figure 35 and Figure 38 As shown, each wall has a locking beam 606. The length of the locking beam 606 is parallel to the width of the wall. The locking beam 606 is located between the upper wall beam and the lower wall beam. Along the height of the wall, there is a gap between the locking beam 606 and the upper wall beam, and a gap between the locking beam 606 and the lower wall beam. The limiting member 162 in the limiting position blocks the locking beam 606 of the second side wall 220 and the second end wall 320. The linkage assembly 170 in the stop position described later blocks the locking beam 606 of the first side wall 210 and the first end wall 310.

[0207] Please return Figure 3 、 Figure 9 、 Figure 15 、 Figure 17 、 Figure 23 、 Figure 25 、 Figure 37 and Figure 39 The pallet box also includes a linkage assembly 170. This assembly includes a linkage shaft 171, a linkage sleeve 172, and a linkage member 173. The chassis 100 has a linkage connecting plate 176. This connecting plate 176 is parallel to the horizontal direction and fixedly connected to the support member. The linkage shaft 171 is fixedly connected to the linkage connecting plate 176. The linkage sleeve 172 is sleeved onto the linkage shaft 171.

[0208] The linkage member 173 is a sheet metal component. It is constructed as a C-shaped structure, comprising a hook plate bottom wall 174 and a hook plate vertical wall 175. The hook plate bottom wall 174 is connected to the outer periphery of the linkage sleeve 172. The hook plate bottom wall 174 and the hook plate vertical wall 175 are perpendicular to each other and parallel to the axis of the linkage shaft 171. This allows the linkage member 173 to rotate about the axis of the linkage shaft 171 between a stop position and a rest position.

[0209] A linkage assembly 170 is provided in both the side slide assembly and the end slide assembly.

[0210] like Figure 23 As shown, regarding the side slide assembly and the linkage assembly 170 located within the side slide assembly, the linkage assembly 170 is located within the chassis 100, near the first end of the first support member 120, along the first horizontal direction D1. Along the second horizontal direction D2, the linkage connecting plate 176 is located on one side of the support member, near the center of the chassis 100. The linkage connecting plate 176 is fixedly connected to the support member bottom wall 123 of the first support member 120. The linkage connecting plate 176 and the support member bottom wall 123 of the first support member 120 are substantially parallel. The axis of the linkage shaft 171 is parallel to the second horizontal direction D2.

[0211] like Figure 39 As shown, for the side slide assembly and linkage assembly 170 located therein, when the linkage member 173 is in the stopped position, the hook plate bottom wall 174 is parallel to the first horizontal direction D1, and the hook plate vertical wall 175 is perpendicular to the first horizontal direction D1. In this case, the hook plate bottom wall 174 is located below the linkage sleeve 172 and between the support member bottom wall 123 of the first support member 120 and the support member bottom wall 123 of the second support member 130. The hook plate vertical wall 175 extends upward from the hook plate bottom wall 174 to above the support member bottom wall 123 of the first support member 120. In this way, the hook plate vertical wall 175 can block the first side wall 210 in the stored position, preventing the first side wall 210 from moving toward the horizontal position.

[0212] Regarding the side slide assembly and the linkage assembly 170 located therein, when the second side wall 220 moves toward the storage position, the second side wall 220 pushes the linkage member 173 to the stop position to block the first side wall 210 located in the storage position. Therefore, the operation of storing the first side wall 210 is simple.

[0213] like Figure 23 As shown, for the side slide assembly and the linkage assembly 170 located in the side slide assembly, when the linkage member 173 is in the static position, the linkage member 173 is located below the support member bottom wall 123 of the first support member 120 .

[0214] like Figure 3 As shown, regarding the end slide assembly and linkage assembly 170 located within the end slide assembly, linkage assembly 170 is located at a first end of third support member 140 along the second horizontal direction D2. Along the first horizontal direction D1, linkage connecting plate 176 is located on one side of the support member near the center of chassis 100. Linkage connecting plate 176 is fixedly connected to support member bottom wall 123 of third support member 140. Linkage connecting plate 176 and support member bottom wall 123 of third support member 140 are substantially parallel. The axis of linkage shaft 171 is parallel to the first horizontal direction D1.

[0215] like Figure 37 As shown, for the end slide assembly and the linkage assembly 170 located in the end slide assembly, the linkage member 173 is in the stop position ( Figure 37 In the case of the linkage member 173 being positioned as shown, the hook plate bottom wall 174 is parallel to the second horizontal direction D2, and the hook plate vertical wall 175 is perpendicular to the second horizontal direction D2. In this case, the hook plate bottom wall 174 is located below the linkage sleeve 172 and between the support member bottom wall 123 of the third support member 140 and the support member bottom wall 123 of the fourth support member 150. The hook plate vertical wall 175 extends upward from the hook plate bottom wall 174 to above the support member bottom wall 123 of the third support member 140. In this way, the hook plate vertical wall 175 blocks the first end wall 310 in the stored position, preventing it from moving toward the horizontal position.

[0216] Regarding the end slide assembly and the linkage assembly 170 located therein, when the second end wall 320 moves toward the storage position, the second end wall 320 pushes the linkage member 173 to the stop position to block the first end wall 310 located in the storage position. Thus, the operation of storing the first end wall 310 is simple.

[0217] like Figure 3 As shown, for the end slide assembly and the linkage assembly 170 located in the end slide assembly, when the linkage member 173 is in the static position, the linkage member 173 is located below the support member bottom wall 123 of the third support member 140 .

[0218] It will be appreciated that, in an embodiment not shown, in the side slide assembly, the limiting connecting plate may also be connected to the bearing portion so that the limiting axis is located above the support member bottom wall of the first support member. In this way, the limiting member is used to block the first side wall. The linkage member is used to block the second side wall. In the end slide assembly, the limiting connecting plate may also be connected to the support member bottom wall of the second support member so that the limiting axis is located above the support member bottom wall of the third support member. In this way, the limiting member is used to block the first end wall. The linkage member is used to block the second end wall.

[0219] Preferably, please refer to Figures 27 to 34The wall body includes a wall lower beam. Specifically, the side wall 200 has a side wall lower beam 240. The end wall 300 has an end wall lower beam 340. The side wall lower beam 240 of the second side wall 220 and the end wall lower beam 340 of the second end wall 320 both have a support plate 603. Along the thickness direction of the wall body, the support plate 603 is located at the outer end of the wall body (the end of the wall body away from the center of the chassis 100 when the pallet box is in the assembled state). The outer side surface of the support plate 603 (the side of the support plate 603 away from the center of the chassis 100 when the pallet box is in the assembled state) and the outer side surface of the side wall lower beam 240 connected thereto (the side of the wall lower beam away from the center of the chassis 100 when the pallet box is in the assembled state) are roughly flush.

[0220] When the second side wall 220 is parallel to the chassis 100, along the second horizontal direction D2, the support plate 603 of the second side wall 220 is located at the linkage member 173 in the side slide assembly. In this way, when the second side wall 220 moves from the horizontal position to the storage position, the support plate 603 of the second side wall 220 can contact and push the linkage member 173 in the side slide assembly, causing the linkage member 173 in the side slide assembly to rotate to the stop position.

[0221] To move the first side wall 210 from the stowed position to an upright position, first withdraw the second side wall 220 and place it in the upright position. During this process, the support plate 603 of the second side wall 220 separates from the linkage assembly 170 within the side slide assembly. The linkage member 173 naturally rotates to a stationary position under its own weight, freeing the linkage assembly 170 within the side slide assembly from blocking the first side wall 210. This allows the first side wall 210 to be withdrawn and placed in the upright position.

[0222] When the second end wall 320 is parallel to the chassis 100, along the first horizontal direction D1, the support plate 603 of the second end wall 320 is located at the linkage member 173 in the end slide assembly. In this way, when the second end wall 320 moves from the horizontal position to the storage position, the support plate 603 of the second end wall 320 can contact and push the linkage member 173 in the end slide assembly, causing the linkage member 173 in the end slide assembly to rotate to the stop position.

[0223] To move the first end wall 310 from the stowed position to an upright position, first withdraw the second end wall 320 and place it in the upright position. During this process, the support plate 603 of the second end wall 320 separates from the linkage assembly 170 within the end slide assembly. The linkage member 173 naturally rotates to a stationary position under its own weight, freeing the linkage assembly 170 within the end slide assembly from blocking the first end wall 310. This allows the first end wall 310 to be withdrawn and placed in the upright position.

[0224] Preferably, the limiting assembly 160 is connected to the left supporting member of the side slide assembly, and the linkage assembly 170 is connected to the right supporting member of the side slide assembly.

[0225] It is understood that in an embodiment not shown, the limit assembly can be connected to the right support member of the side slide assembly, and the linkage assembly can be connected to the left support member of the side slide assembly. Alternatively, the limit assembly and the linkage assembly can both be connected to the left support member or the right support member of the side slide assembly.

[0226] Please refer to Figure 5 、 Figure 10 、 Figure 14 、 Figure 15 、 Figure 17 、 Figure 19 and Figure 26 The first stacking blocks 114 are located at the corners of the load-bearing section 110. The upper force transmission section 182 is connected to the load-bearing section end beam 113 and the first stacking blocks 114. The lower force transmission section 183 is connected to the support legs 605. The bottom surfaces of the support legs 605 are provided with stacking holes. When stacking pallet boxes in the stowed state, the stacking holes of the support legs 605 of the upper pallet box (the upper pallet box among the adjacent pallet boxes) are inserted into the first stacking blocks 114 of the lower pallet box. The bottom surfaces of the support legs 605 of the upper pallet box abut the upper surface of the load-bearing section 110 of the lower pallet box. In this way, the gravity of the upper pallet box is transmitted to the load-bearing part 110 of the lower pallet box, and then to the upper force transmitting part 182, and then to the horizontal force transmitting part 181 by the upper force transmitting part 182, and then to the lower force transmitting part 183 by the horizontal force transmitting part 181, and finally to the support leg 605 of the pallet box by the lower force transmitting part 183.

[0227] like Figure 5 、 Figure 31 and Figure 33 As shown, the end wall 300 has an end column 330, a second stacking block 370, and a third stacking block 339. The second stacking block 370 is a quadrangular prism structure. The length direction of the quadrangular prism structure is parallel to the width direction of the end wall 300. Along the width direction of the end wall 300, one end of the second stacking block 370 is connected to the end of the end wall lower beam 340, and the other end of the second stacking block 370 is connected to the lower end of the end column 330. The third stacking block 339 is located at the upper end of the end column 330. Along the thickness direction of the end wall 300, the inner surface of the second stacking block 370 and the inner surface of the end wall lower beam 340 (the surface of the end wall lower beam 340 near the center of the chassis 100 when the pallet box is in the assembled state) are roughly flush.

[0228] The third stacking block 339 has stacking columns and a stacking surface. The upper surface of the end wall upper beam 360 is substantially flush with the stacking surface of the third stacking block to ensure that the stacking surface can withstand the stacking gravity.

[0229] When the pallet box is in the assembled state, the second stacking block 370 is located above and abuts the first stacking block 114. When stacking the pallet boxes in the assembled state, the stacking holes of the legs 605 of the upper pallet box are inserted into the stacking columns of the third stacking block 339 of the lower pallet box, and the bottom surface of the legs 605 of the upper pallet box abuts the stacking surface of the third stacking block 339 of the lower pallet box. In this way, the weight of the upper pallet box is transmitted to the end column 330 of the lower pallet box via the third stacking block 339, and then to the second stacking block 370 by the end column 330, which is then transmitted to the first stacking block 114 by the second stacking block 370, which is then transmitted to the first stacking block 114, which is then transmitted to the upper force transmitting portion 182 by the first stacking block 114, which is then transmitted to the horizontal force transmitting portion 181 by the upper force transmitting portion 182, which is then transmitted to the lower force transmitting portion 183 by the horizontal force transmitting portion 181, and finally to the pallet box's legs 605 by the lower force transmitting portion 183. The weight of the lower pallet box itself and the cargo it carries is transmitted from the load-bearing portion 110 through the force transmitting member 180 to the pallet box's legs 605. This force transmission path is the same as the force transmission path used when stacking pallet boxes in the stowed state.

[0230] Preferably, the second stacking block 370 is a solid structure, thereby increasing the strength of the second stacking block 370 .

[0231] like Figures 27 to 30 As shown, the side walls of the pallet box include side columns 230. The side columns of the first side wall 210 are first side columns 235, and the side columns of the second side wall 220 are second side columns 236. When the pallet box is in the assembled state, along the height direction D3 of the chassis 100, the height position of the side wall upper beam 260 of the first side wall 210 is substantially the same as the height position of the side wall upper beam 260 of the second side wall 220. In other words, when the pallet box is in the assembled state, along the height direction D3 of the chassis 100, the upper surface of the side wall upper beam 260 of the first side wall 210 (the surface of the side wall upper beam 260 away from the side wall lower beam 240) is substantially flush with the upper surface of the side wall upper beam 260 of the second side wall 220. The sidewall lower beam 240 of the first sidewall 210 and the sidewall lower beam 240 of the second sidewall 220 both abut against the upper surface of the supporting portion 110 . The length of the second side column 236 of the second sidewall 220 is greater than that of the first side column 235 of the first sidewall 210 .

[0232] A side wall pivot shaft 231 is provided at the lower end of the side pillar 230 . Along the width direction of the side wall 200 , a portion of the side wall pivot shaft 231 protrudes from the side pillar 230 toward the outer side of the side wall 200 away from the center of the side wall 200 .

[0233] The lower end of the side column 230 is also connected to a pivot connector 232. Pivot connector 232 is a sheet metal component. It is a U-shaped structure with an upward opening. The U-shaped structure includes two connecting walls and a connecting bottom wall. The two connecting walls are connected to the lower ends of the side column 230. The connecting bottom wall is located to the side of the connecting walls, away from the side wall upper beam 260. The side wall pivot 231 is located within the U-shaped structure and is connected to the lower end of the side column 230. This ensures a secure connection between the side wall pivot 231 and the side column 230.

[0234] The length dimension of the first side pillar 235 is smaller than the length dimension of the second side pillar 236. Therefore, the first side wall 210 is connected to the first support member 120, and the second side wall 220 is connected to the second support member 130.

[0235] like Figures 31 to 34 As shown, the length of the end column 330 of the first end wall 310 is substantially the same as the length of the end column 330 of the second end wall 320. A connecting long plate is provided at the bottom of the end column 330. Specifically, the bottom of the end column 330 of the first end wall 310 is connected to the first long plate 332, while the bottom of the end column 330 of the second end wall 320 is connected to the second long plate 333. The length of the second long plate 333 is greater than the length of the first long plate 332.

[0236] The long connecting plate is a sheet metal member. Its upper end connects the end column 330, the end wall lower beam 340, and the second stacking block 370. Its lower end bends toward the inside of the end wall 300 (in the second horizontal direction D2, when the pallet box is in the assembled state, the direction in which the end wall 300 approaches the center of the chassis 100) to form a connecting short wall. This connecting short wall is used to connect to the end wall pivot shaft 331. The end wall pivot shaft 331 is connected to the bottom surface of the connecting short wall. Along the width direction of the end wall 300, a portion of the end wall pivot shaft 331 protrudes outward from the end column 330, toward the outside of the end wall 300, away from the center of the end wall 300.

[0237] Preferably, a reinforcing plate 335 is further provided on the inner side of the long connecting plate (when the pallet box is in the assembled state, along the second horizontal direction D2, on the side of the long connecting plate close to the center of the chassis 100). In this way, the long connecting plate can be strengthened.

[0238] The length dimension of the first long connecting plate 332 is smaller than the length dimension of the second long connecting plate 333. In this way, the first end wall 310 is connected to the third supporting member 140, and the second end wall 320 is connected to the fourth supporting member 150.

[0239] like Figure 19As shown, the force transmission member 180 has a long connecting plate avoidance groove 189. This groove 189 is formed by the space between the upper force transmission portion 182 and the corner wall 184. When the pallet box is in the assembled state, the long connecting plate is partially located in the long connecting plate avoidance groove 189, preventing the long connecting plate from protruding from the outer contour of the chassis 100. This facilitates transportation of the assembled pallet box.

[0240] like Figure 5 、 Figure 10 ,as well as Figure 33 As shown, the end wall 300 also includes an anti-expansion barrier 334. The anti-expansion barrier 334 is connected to the end column 330 and the second stacking block 370. When the pallet box is in the assembled state, the anti-expansion barrier 334 is located on the side of the first stacking block 114 near the center of the chassis 100. The first stacking block 114 blocks the anti-expansion barrier 334, preventing the end wall 300 from expanding due to compression from the cargo, thereby preventing the long connecting plate from being deformed by external forces.

[0241] Preferably, a portion of the inner surface of the first stacking block 114 (the surface of the first stacking block 114 near the center of the chassis 100) is recessed toward the outside of the chassis 100 to form a stacking block recess 115. When the pallet box is in the assembled state, the anti-expansion barrier 334 is located within the stacking block recess 115. This prevents the anti-expansion barrier 334 from protruding from the inner surface of the end wall 300 (the side of the end wall 300 near the center of the chassis 100 when the pallet box is in the assembled state), thereby reducing the pallet box's loading capacity. Furthermore, this prevents the end wall 300 from increasing in thickness, thereby ensuring smooth movement between the flat and stowed positions.

[0242] When the upright end wall 300 needs to be stored, the end wall 300 must be lifted first to separate the anti-expansion barrier 334 from the first stacking block 114, and then the end wall 300 is rotated to the horizontal position and then moved from the horizontal position to the storage position.

[0243] Preferably, the anti-expansion barrier 334 may be formed by partially bending the end column 330 .

[0244] Please refer to Figures 7 and 8 、 Figure 22 and Figure 26Along the height direction D3 of the chassis 100, the distance between the upper retaining wall 127 of the fourth fixed stopper 155 and the bottom wall of the fourth support member 150 (i.e., the upper surface of the fork-lifting portion 190) is relatively large. The distance between the upper retaining wall 127 of the fourth movable stopper 156 and the bottom wall of the fourth support member 150 (i.e., the upper surface of the fork-lifting portion 190) is relatively large. Thus, when the pallet box is in the assembled state, along the height direction D3 of the chassis 100, the minimum distance between the end wall pivot axis 331 of the second end wall 320 and the upper retaining wall 127 of the fourth fixed stopper 155 is greater than the height dimension of the anti-expansion barrier 334 of the second end wall 320 (the dimension of the anti-expansion barrier 334 along the height direction of the end wall 300). When the pallet box is in the assembled state, along the height direction D3 of the chassis 100, the minimum distance between the end wall pivot axis 331 of the second end wall 320 and the upper retaining wall 127 of the fourth movable stopper 156 is greater than the height dimension of the anti-expansion retaining wall 334 of the second end wall 320. When the second end wall 320 is lifted so that the end wall pivot axis 331 contacts the upper retaining wall 127 of the fourth fixed stopper 155 and the end wall pivot axis 331 contacts the upper retaining wall 127 of the fourth movable stopper 156, the anti-expansion retaining wall 334 of the second end wall 320 can be separated from the first stacking block 114, thereby allowing the second end wall 320 to be stored.

[0245] Please refer to Figures 2 to 3 、 Figure 17 and Figure 19 , along the height direction D3 of the chassis 100, the distance from the horizontal force transmission portion 181 to the support member bottom wall 123 of the third support member 140 is relatively large. When the pallet box is in the assembled state, along the height direction D3 of the chassis 100, the minimum distance from the connecting short wall of the first long connecting plate 332 to the horizontal force transmission portion 181 is greater than the height dimension of the anti-expansion barrier 334. Along the height direction D3 of the chassis 100, the upper barrier wall 127 of the third movable limit stop 146 is partially recessed upward to form a movable limit stop groove 149 with a downward opening. Figure 19 As shown, along the height direction D3 of the chassis 100, the distance from the bottom surface of the movable stop groove 149 to the support member bottom wall 123 of the third support member 140 is greater. When the pallet box is in the assembled state, along the height direction D3 of the chassis 100, the minimum distance from the end wall pivot axis 331 to the bottom surface of the movable stop groove 149 is greater than the height dimension of the anti-expansion barrier 334. Therefore, when the first end wall 310 is lifted so that the connecting short wall at the lower end of the first long connecting plate 332 contacts the horizontal force transmission portion 181 and the end wall pivot axis 331 contacts the bottom surface of the movable stop groove 149, the anti-expansion barrier 334 can be disengaged from the first stacking block 114, allowing the first end wall 310 to be stored.

[0246] like Figure 30 and Figure 34 As shown, a connecting hole 234 is provided on the outer end surface of the side pillar 230, away from the center of the side wall 200, along the width direction of the side wall 200. A connecting pin 338 is provided on the end pillar 330, along the thickness direction of the end wall 300. The connecting pin 338 extends from the inner surface of the end wall 300 near the inner side of the end wall 300 (the side of the end wall 300 near the center of the chassis 100 when the pallet box is in the assembled state). When the pallet box is in the assembled state, the connecting pin 338 is inserted into the connecting hole 234. At this time, the connecting pin 338 abuts the upper edge of the connecting hole 234 (the edge of the connecting hole 234 away from the side wall lower beam 240). In this way, when the pallet box is in the assembled state, the upper edge of the connecting hole 234 blocks the connecting pin 338, thereby preventing the end wall 300 from moving upward relative to the side wall 200 along the height direction D3 of the chassis 100.

[0247] Along the height direction D3 of the chassis 100, the minimum distances between the support member bottom wall 123 of the first support member 120 and the upper retaining wall 127 of the first fixed stopper 125, the minimum distance between the support member bottom wall 123 of the first support member 120 and the upper retaining wall 127 of the first movable stopper 126, the minimum distance between the support member bottom wall 123 of the second support member 130 and the upper retaining wall 127 of the second fixed stopper 135, and the minimum distance between the support member bottom wall 123 of the second support member 130 and the upper retaining wall 127 of the second movable stopper 136 are all slightly greater than the sum of the diameter of the sidewall pivot shaft 231 and the thickness of the connecting bottom wall of the pivot shaft connector 232. Thus, the first and second side walls 210 and 220, when in the upright position, cannot move upward relative to the chassis 100.

[0248] Thus, the upright end wall 300 cannot move upward relative to the chassis 100. When the pallet box is loaded with goods, neither the side walls 200 nor the end walls 300 can move upward relative to the chassis 100 in the height direction D3 of the chassis 100. Consequently, the anti-expansion barrier 334 cannot separate from the first stacking block 114, ensuring a stable and safe pallet box structure.

[0249] like Figure 4 、 Figure 5 ,as well as Figure 28 and Figure 33 As shown, the connection between the wall column and the wall lower beam of a portion of the wall body is provided with an inclined guide member 602. Along the width direction of the wall body, the inclined guide member 602 is located on the side of the wall column close to the center of the wall body. Along the height direction of the wall body, the inclined guide member 602 is located between the wall lower beam and the wall upper beam.

[0250] The inclined guide member 602 has a guide surface. The guide surface is inclined in the height direction of the wall. The end of the guide surface of the inclined guide member 602 away from the lower beam of the wall is closer to the outer side of the wall than the other end.

[0251] Specifically, the second end wall 320 has an inclined guide member 602. In the second end wall 320, the inclined guide member 602 is connected to the second stacking block 370 and the end wall lower beam 340. Along the thickness direction of the second end wall 320, the end of the guide surface near the end wall lower beam 340 is roughly flush with the inner surface of the second stacking block 370 (the surface of the second stacking block 370 near the center of the chassis 100 when the pallet box is in the assembled state) and is connected to the inner surface of the second stacking block 370.

[0252] When the second end wall 320 is in the storage position, the inclined guide member 602 is located at the limiting member 162 in the end slide assembly along the width direction of the second end wall 320, so that the position of the inclined guide member 602 is approximately the same as the position of the limiting member 162 in the end slide assembly.

[0253] Thus, during the process of withdrawing the second end wall 320, the locking and limiting end 163 of the limiting member 162 in the end slide assembly first contacts and slides along the guide surface. Guided by the guide surface, the limiting member 162 in the end slide assembly passes over the second stacking block 370 to prevent the second stacking block 370 from being blocked by the limiting member 162, thereby preventing the second end wall 320 from moving to the horizontal position.

[0254] The second side wall 220 has an inclined guide member 602. In the second side wall 220, the inclined guide member 602 of the second side wall 220 is connected to the side wall lower beam 240. Along the thickness direction of the second side wall 220, the end of the guide surface close to the side wall lower beam 240 is roughly flush with the inner surface of the side wall lower beam 240 (the surface of the side wall lower beam 240 close to the center of the chassis 100 when the pallet box is in the assembled state) and is connected to the inner surface of the side wall lower beam 240.

[0255] When the second side wall 220 is in the storage position, the inclined guide member 602 is located at the limiting member 162 in the side slide assembly along the width direction of the second side wall 220, so that the position of the inclined guide member 602 is approximately the same as the position of the limiting member 162 in the side slide assembly.

[0256] Thus, when the second side wall 220 is withdrawn, the locking and limiting end 163 of the limiting member 162 in the side slide assembly first contacts and slides along the guide surface. Guided by the guide surface, the limiting member 162 in the side slide assembly passes over the side wall lower beam 240, preventing the side wall lower beam 240 from being blocked by the limiting member 162, thereby preventing the second side wall 220 from moving to the horizontal position.

[0257] When the pallet box is in the assembled state, the two side walls 200 are located between the two end walls 300 .

[0258] like Figures 27 to 34 As shown, the side wall 200 further includes side vertical beams 250. There may be multiple side vertical beams 250. The length of each side vertical beam 250 is parallel to the height of the side wall 200. The ends of each side vertical beam 250 are connected to the side wall upper beam 260 and the side wall lower beam 240, respectively. Along the width of the side wall 200, the multiple side vertical beams 250 can be spaced apart based on the size of the cargo to effectively block the cargo. Along the width of the side wall 200, the side vertical beams 250 located on the sides of the side wall 200 are spaced apart from the adjacent side pillars 230. The length of the locking crossbeam 606 is parallel to the width of the side wall 200. The ends of the locking crossbeam 606 are connected to the adjacent side pillars 230 and the side vertical beams 250, respectively. Along the height of the side wall 200, the locking crossbeam 606 is located below the side wall upper beam 260 and spaced apart from the side wall upper beam 260.

[0259] like Figure 30 and Figure 34 As shown, a lock is provided at the corners of the two side walls 200. The lock comprises a lock support base, a lock rod 430, a lock handle 440 and a lock handle fixing member 460. The lock support base comprises a lock front support base 410 and a lock rear support base 420.

[0260] The lock support is connected to the surface of the lock beam 606 that is away from the sidewall upper beam 260. The lock support has a lock rod support hole. The axis of the lock rod 430 is parallel to the width of the sidewall 200. The lock rod 430 is inserted into the lock rod support hole. This allows the lock rod 430 to move along the width of the sidewall 200 and rotate about its axis.

[0261] The locking end of the locking rod 430 has a hook. The hook is T-shaped. The axis of the hook is perpendicular to the axis of the locking rod 430. The locking handle 440 is connected to the outer circumference of the locking rod 430. The locking handle 440 can drive the locking rod 430 to rotate about the axis of the locking rod 430. The locking handle 440 can also drive the locking rod 430 to move along the axis of the locking rod 430.

[0262] The side posts 230 are provided with side post through-holes 233. Along the height direction of the side wall 200, the side post through-holes 233 are located at the locking rod support holes. The end wall 300 has a locking hole 336. When the pallet box is in the assembled state, along the height direction D3 of the chassis 100, the locking hole 336 is located at the side post through-holes 233. Both the side post through-holes 233 and the locking hole 336 are elongated holes.

[0263] When the pallet box is in the assembled state, the hook of the locking rod 430 passes through the side post through-hole 233 and enters the locking hole 336. The locking rod 430 is then rotated so that the axis of the hook and the long axis of the locking hole 336 are offset (e.g., perpendicular), thereby locking the end wall 300 to the side wall 200. At this point, the hook is in the locked position, and the locking handle 440 is secured within the locking handle fixing member 460.

[0264] The side column 230 is spaced apart from the front support base 410 of the lock to form a hook storage space. When the hook is in the open position, the hook enters the hook storage space through the lock hole 336 and the side column through hole 233, and the lock handle 440 enters the lock handle fixing member 460 and is fixed.

[0265] like Figure 30 As shown, the side wall 200 also has a lock guard 450. The lock guard 450 is located at the lock handle 440 along the height of the side wall 200. Along the thickness of the side wall 200, the lock guard 450 is located on the inner side of the lock handle 440 (the side of the lock handle 440 closer to the center of the chassis 100 when the pallet box is in the assembled state). When the lock handle 440 is secured in the lock handle fixing member 460, a gap is created between the lock guard 450 and the lock handle 440 along the thickness of the side wall 200. When cargo placed inside the assembled pallet box expands, the lock guard 450 blocks the cargo and prevents it from squeezing the lock handle 440. This prevents the expanding cargo from squeezing the lock handle 440 when the hook head is in the locked position, facilitating the disengagement of the lock handle 440 from the lock handle fixing member 460, allowing the hook head to rotate to the open position. Furthermore, it is possible to prevent cargo from pressing the lock handle 440 and thereby opening the lock.

[0266] The side columns 230, side beams 250, and lock support base are all connected to the lock guard plate 450. The surface of the lock guard plate 450 near the inner side of the side wall 200 (the side of the side wall 200 near the center of the chassis 100 when the pallet box is in the assembled state), the surface of the lock support base near the inner side of the side wall 200, and the surface of the lock beam 606 near the inner side of the side wall 200 are roughly flush. The surface of the lock guard plate 450 near the inner side of the side wall 200, the surface of the lock support base near the inner side of the side wall 200, and the surface of the lock beam 606 near the inner side of the side wall 200 are connected together, and the connection is smooth to form a continuous smooth surface. When the side wall 200 is in the stowed position, the position of the limiting member 162 within the side slide assembly, the inner surface of the lock guard 450 near the side wall 200, the inner surface of the lock support seat near the side wall 200, and the inner surface of the lock beam 606 near the side wall 200 are approximately the same along the width direction of the side wall 200. As a result, the locking stop limit end 163 of the limiting member 162 within the side slide assembly can slide along the inner surface of the lock guard 450 near the side wall 200, the inner surface of the lock support seat near the side wall 200, and the inner surface of the lock beam 606 near the side wall 200. This facilitates the withdrawal of the side wall 200.

[0267] Preferably, the end column 330 is a sheet metal part formed by bending a steel plate. The cross-section of the end column 330 (the cross-section is perpendicular to the length direction of the end column 330) is roughly an S-shaped structure. The S-shaped structure includes an outer end wall, a middle end wall, an inner end wall, and two side end walls. The outer end wall, the middle end wall, the inner end wall, and the two side end walls are all flat wall structures. The two side end walls are arranged in parallel. The outer end wall, the middle end wall, and the inner end wall are arranged in parallel. The side end wall and the outer end wall are perpendicular. Along the width direction of the end wall 300, the outer end wall is located at the outer end of the end column 330 away from the center of the end wall 300. Along the width direction of the end wall 300, the outer end wall, one side end wall, the middle end wall, the other side end wall, and the inner end wall are arranged in sequence.

[0268] When the pallet box is in the assembled state, the outer end wall is located outside the side wall 200 (the side of the side wall 200 away from the center of the chassis 100 when the pallet box is in the assembled state). In this way, the end wall 300 can prevent the side wall 200 from expanding outward. In addition, the S-shaped structure can increase the strength of the end column 330.

[0269] End wall 300 also has an end column reinforcement 337. The outer end wall, one side end wall, and the middle end wall form a groove that opens toward the inside of end wall 300. End column reinforcement 337 is located within this groove. There are multiple end column reinforcements 337. Connecting pins 338 are connected to end column reinforcements 337, and locking holes 336 are provided on the bottom surface of the groove.

[0270] The inner surface of the end column reinforcement 337 (the surface of the end column reinforcement 337 close to the center of the chassis 100 when the pallet box is in the assembled state), the inner surface of the side end wall away from the outer end wall (the surface of the side end wall close to the center of the chassis 100 when the pallet box is in the assembled state), and the inner surface of the end wall upper beam 360 (the surface of the end wall upper beam 360 close to the center of the chassis 100 when the pallet box is in the assembled state) are roughly flush with the inner surface of the end wall lower beam 340 to constitute part of the inner surface of the end wall 300.

[0271] When the end wall 300 is in the upright position, a gap exists along the thickness of the end wall 300 between the anti-expansion barrier 334 and the bottom surface of the stacking block groove 115. A gap also exists between the reinforcement plate 335 and the bottom surface of the long connecting plate avoidance groove 189. This allows the end wall 300 to tilt outward in the upright position. At this point, the end wall upper beam 360 is further away from the center of the chassis 100 than the end wall lower beam 340. The staggered connection pin 338 and the side column 230 facilitate insertion of the connection pin 338 into the connection hole 234.

[0272] Along the height direction of the side wall 200 , the connecting hole 234 is located on a side of the locking rod 430 close to the side wall upper beam 260 , thereby facilitating the insertion of the connecting pin 338 into the connecting hole 234 .

[0273] In an embodiment not shown, the lock can also be arranged on the end wall.

[0274] like Figure 11 As shown, the side wall 200 also includes a retaining assembly. The retaining assembly includes a latch. The latch includes a latch seat 520, a latch rod 510, and a latch spring 530. The latch seat 520 is fixedly connected to the side vertical beam 250. Along the height direction of the side wall 200, the latch seat 520 and the side wall lower beam 240 are spaced apart. The latch seat 520 is provided with a latch support hole. The side wall lower beam 240 is provided with a first retaining hole. The latch rod 510 is inserted into the latch support hole and the first retaining hole. In this way, the latch rod 510 can move along the axis of the latch rod 510 and can rotate around the axis of the latch rod 510.

[0275] The latch rod 510 is provided with a resilient cylindrical pin. The resilient cylindrical pin protrudes from the outer circumference of the latch rod 510. A latch spring 530 is sleeved on the latch rod 510 and positioned between the latch seat 520 and the resilient cylindrical pin. One end of the latch spring 530 abuts the latch seat 520. The other end of the latch spring 530 abuts the resilient cylindrical pin. The latch spring 530 is used to apply a force to the latch rod 510, causing it to move away from the sidewall upper beam 260.

[0276] The latch seat 520 has two latch handle positioning slots 521 spaced apart along the height direction of the side wall 200. The two latch handle positioning slots 521 include a first latch handle positioning slot and a second latch handle positioning slot. Along the height direction of the side wall 200, the first latch handle positioning slot is located to the side of the second latch handle positioning slot, near the side wall upper beam 260.

[0277] The upper portion of the latch rod 510 is bent to form a latch handle 511. The load-bearing side beam 112 is provided with a second retaining hole. The chassis 100 also includes a latch tube 116. The axis of the latch tube 116 extends along the height direction D3 of the chassis 100. The latch tube 116 is passed through and fixed in the second retaining hole. When the side wall 200 is in an upright position, the latch rod 510 can extend out of the side wall lower beam 240 to enter the latch tube 116. At this time, the latch rod 510 can be rotated so that the latch handle 511 enters the second latch handle positioning groove. This keeps the latch rod 510 in the position of entering the latch tube 116. The latch spring 530 is in a compressed state so that the force of the latch spring 530 can keep the latch rod 510 in the position of entering the latch tube 116.

[0278] To assemble the pallet, first move the second side wall 220 to an upright position and insert the latch rod 510 connected to the second side wall 220 into the latch tube 116 to stop the second side wall 220 in the upright position. Then, move the first side wall 210 to an upright position and insert the latch rod 510 connected to the first side wall 210 into the latch tube 116 to stop the first side wall 210 in the upright position. Finally, move the end wall to an upright position. This facilitates assembling the pallet, allowing one person to complete the entire process.

[0279] To store the pallet box, the latch rod 510 is rotated to move the latch handle 511 out of the second latch handle positioning slot. The latch rod 510 is then released from the latch tube 116 and the sidewall 200 is retracted. At this point, the latch handle 511 is located in the first latch handle positioning slot, and the force of the latch spring 530 keeps the latch handle 511 in the first latch handle positioning slot.

[0280] It will be understood that in embodiments not shown, the retaining assembly may also be in other forms, such as providing a movable baffle on the side beam of the load-bearing portion to block the outside of the box of the side wall in the upright position (the outer surface of the side wall away from the center of the chassis when the pallet box is in an assembled state).

[0281] like Figure 16As shown, relief portions 117 are provided at the four corners of the load-bearing portion 110. When the pallet box is in the assembled state, the lower ends of the wall columns and the support plate 603 are located in the relief portions 117, allowing the wall columns to pass through the load-bearing portion 110 and pivotally connect to the support structure. This prevents the wall columns in the upright position from protruding from the outer contour of the chassis 100, facilitating transportation.

[0282] The steps to assemble the pallet box are as follows:

[0283] Assemble the second side wall 220: press the locking operating end 164 in the side slide assembly downward with one hand to release the blocking of the locking limit end 163 on the lock beam 606 of the second side wall 220; use the other hand to pull out the side wall upper beam 260 of the second side wall 220 while releasing the locking operating end 164 to pull the second side wall 220 to a flat position; then rotate the second side wall 220 to an upright position; then insert the latch rod 510 connected to the second side wall 220 into the latch tube 116 and insert the latch handle 511 into the second latch handle positioning groove to complete the assembly of the second side wall 220.

[0284] Assembling the first side wall 210: Simply pull the first side wall 210 out to its horizontal position. The subsequent steps for assembling the first side wall 210 are essentially the same as those for assembling the second side wall 220 after it has been pulled out to its horizontal position, and are not detailed here. Since the first side wall 210 is automatically unlocked after the second side wall 220 is assembled, the assembly operation is simplified.

[0285] Assemble the second end wall 320: press the locking operating end 164 in the end slide assembly downward with one hand to release the blocking of the locking limit end 163 on the locking beam 606 of the second end wall 320; use the other hand to pull the end wall upper beam 360 of the second end wall 320 outward and release the locking operating end 164 at the same time; pull the second end wall 320 to a flat position; then rotate the second end wall 320 to a roughly upright position; at this time, the anti-expansion barrier 334 of the second end wall 320 is just in contact with or nearly in contact with the first stacking block 114, lift the second end wall 320 upward so that the anti-expansion barrier 334 is higher than the first stacking block 114, continue to rotate the second end wall 320 so that the anti-expansion barrier 334 passes over the first stacking block 114, and then let the second end wall 320 fall so that the anti-expansion barrier 334 is located in the stacking block groove 115 of the first stacking block 114. At this time, the second end wall 320 tilts outward, and the side wall 200 is straightened so that the connecting pin 338 of the second end wall 320 is aligned with the connecting hole 234 of the side wall 200, and the second end wall 320 is continued to be rotated so that the connecting pin 338 enters the connecting hole 234; then the locking handle 440 on the side wall 200 is operated to make the hook head of the locking rod 430 enter the locking hole 336 of the second end wall 320, and the locking handle 440 is rotated so that the locking handle 440 enters the locking handle fixing member 460 for fixing, thereby locking the second end wall 320 and the side wall 200, and completing the assembly of the second end wall 320.

[0286] Assembling the first end wall 310: directly pulling the first end wall 310 to the horizontal position; the subsequent steps of assembling the first end wall 310 are roughly the same as the steps of assembling the second end wall 320 after pulling it to the horizontal position, and will not be repeated here.

[0287] like Figure 31 and Figure 32 As shown, the end wall 300 also includes an end vertical beam 350. There may be multiple end vertical beams 350. The length of the end vertical beam 350 is parallel to the height of the end wall 300. The ends of the end vertical beam 350 are connected to the end wall upper beam 360 and the end wall lower beam 340, respectively. Along the width of the end wall 300, the multiple end vertical beams 350 can be spaced apart based on the size of the cargo to effectively block the cargo. Along the width of the end wall 300, the end vertical beams 350 located on the side of the end wall 300 are spaced apart from the adjacent end columns 330. The length of the locking crossbeam 606 connected to the end wall 300 is parallel to the width of the end wall 300. The ends of the locking crossbeam 606 are connected to the adjacent end columns 330 and the end vertical beam 350, respectively. Along the height of the end wall 300, the locking crossbeam 606 is located below the end wall upper beam 360 and spaced apart from the end wall upper beam 360.

[0288] Preferably, the side wall 200 and the end wall 300 can also be provided with a side wall cover (not shown) and an end wall cover (not shown), and the locking limit end 163 can slide along the side wall cover and the end wall cover during the process of the wall body moving from the storage position to the flat position.

[0289] The steps to put the pallet box in the storage state are as follows:

[0290] To store the first end wall 310: Operate the locking handle 440 on the side wall 200 to retract the hook of the locking rod 430 that locks the first end wall 310 into the hook storage space. Then, rotate the locking handle 440 so that it enters the locking handle fixing member 460 and is fixed thereto. This prevents the locking handle 440 from drooping during the storage process, thereby preventing the side wall 200 from being stored in the chassis 100. Tilt the first end wall 310 outward to allow the connecting pin 338 to exit the connecting hole 234. Lift the first end wall 310 upward so that the connecting short wall at the lower end of the first long connecting plate 332 contacts the horizontal force transmission portion 181, and the end wall pivot axis 331 of the first end wall 310 contacts the upper retaining wall 127 of the third movable limit stop 146. At this point, the anti-expansion retaining wall 334 disengages from the stacking block groove 115 of the first stacking block 114. Then, the first end wall 310 is rotated outward to the flat position, and then the first end wall 310 is moved to the storage position. At this time, the end wall pivot shaft 331 of the first end wall 310 contacts the positioning block 601 of the third support member 140.

[0291] Storing the Second End Wall 320: The steps for storing the second end wall 320 are similar to those for storing the first end wall 310 and are not repeated here. When the second end wall 320 is moved to the storage position, it automatically locks with the first end wall 310, simplifying the storage operation.

[0292] The automatic locking mechanism works as follows: the lower end wall beam 340 and the lock beam 606 of the second end wall 320 successively contact the limit bottom wall 166 within the end slide assembly, pushing the limit member 162 to rotate, thereby lifting the lock stop limit end 163. When the second end wall 320 is about to move to the stowed position, the support plate 603 of the second end wall 320 begins to contact the lower end of the hook plate bottom wall 174 of the linkage member 173 within the end slide assembly. As the second end wall 320 moves to the stowed position, the lock stop limit end 163 passes over the lock beam 606 and, under the action of the limit torsion spring 167, rotates downward to the limit position, blocking the lock beam 606 of the second end wall 320 in the stowed position. At the same time, the support plate 603 pushes the linkage member 173 to rotate from the static position to the stop position to block the locking beam 606 of the first end wall 310 at the storage position, and the second end wall 320 and the first end wall 310 are automatically locked at the same time.

[0293] Storing the first side wall 210: disengage the latch on the first side wall 210 from the latch tube 116; then locate the latch handle 511 in the first latch handle positioning groove 521 of the latch seat 520; then rotate the first side wall 210 to the flat position, and then move the first side wall 210 to the storage position.

[0294] Storing the second side wall 220 : The steps of storing the second side wall 220 are substantially the same as the steps of storing the first side wall 210 , and are not described again here.

[0295] When the second side wall 220 moves to the storage position, the first side wall 210 and the second side wall 220 are locked at the same time. The principle of the first side wall 210 and the second side wall 220 being locked at the same time is roughly the same as the principle of the first end wall 310 and the second end wall 320 being locked at the same time, and will not be repeated here.

[0296] The present application has been described through the above-described embodiments, but it should be understood that the above-described embodiments are for illustrative and illustrative purposes only and are not intended to limit the present application to the described embodiments. In addition, it will be understood by those skilled in the art that the present application is not limited to the above-described embodiments, and that various variations and modifications may be made based on the teachings of the present application, all of which fall within the scope of protection claimed in the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

[0297] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art in the technical field of this application. The terms used herein are only for describing specific implementation purposes and are not intended to limit this application. Terms such as "component" and the like appearing herein may refer to either a single part or a combination of multiple parts. Terms such as "installation" and "setting" appearing herein may refer to either a component being directly attached to another component or a component being attached to another component through an intermediary. Features described herein in one embodiment may be applied to another embodiment alone or in combination with other features, unless the feature is not applicable in the other embodiment or otherwise stated.

Claims

1. A pallet box, characterized in that: The pallet box includes: A chassis, comprising: a load-bearing portion; and A supporting member, the supporting member being located below the bearing portion, with two supporting members being arranged in parallel; and a wall body, wherein the bottom end of the wall body has two wall pivot axes, the two wall pivot axes protruding outward in opposite directions, the wall body is pivotally connected to the support member between an upright position and a flat position around the wall pivot axes, and is movably coupled to the support member via the first end of the support member along the length direction of the support member between the flat position and the storage position; The wall body includes a side wall and an end wall, the axis of the end wall pivot axis of the end wall is parallel to the first horizontal direction, and the axis of the side wall pivot axis of the side wall is parallel to the second horizontal direction, The support members include side support members and end support members, wherein the length direction of the side support members is parallel to the first horizontal direction for supporting the side walls, and the length direction of the end support members is parallel to the second horizontal direction for supporting the end walls, and the side support members and the end support members are sequentially arranged along the height direction of the chassis; The side wall includes a first side wall and a second side wall, and the side support member includes a first support member and a second support member sequentially arranged along the height direction of the chassis to support the first side wall and the second side wall respectively, and the first end of the first support member and the first end of the second support member are respectively located at two ends of the chassis along the first horizontal direction. The end wall includes a first end wall and a second end wall, the end support member includes a third support member and a fourth support member sequentially arranged along the height direction of the chassis to support the first end wall and the second end wall respectively, and the first end of the third support member and the first end of the fourth support member are respectively located at two ends of the chassis along the second horizontal direction; The chassis further comprises a linkage member and a linkage shaft located in the chassis, wherein the linkage member is rotatably arranged between a stop position and a rest position via the linkage shaft. When one of the side walls moves to the storage position, the linkage member can be pushed to the stop position to enter above the bottom wall of the support member for supporting the other side wall, so that the linkage member can block the other side wall located in the storage position, and / or When one of the end walls moves to the storage position, the linkage member can be pushed to the stop position to enter above the bottom wall of the support member for supporting the other end wall, so that the linkage member can block the other end wall located in the storage position.

2. The pallet box according to claim 1, characterized in that: The chassis is further provided with a positioning block, which is fixedly connected to the supporting member and located at an end of the supporting member away from the first end, so as to block the wall located at the storage position.

3. The pallet box according to claim 1, characterized in that: The chassis is further provided with a limit stop, which is fixedly arranged at the first end to prevent the wall pivot axis from leaving the supporting member.

4. The pallet box according to claim 3, characterized in that: At least one of the two limit stops located at the two supporting members for supporting one wall body is detachably provided.

5. The pallet box according to claim 1, characterized in that: The chassis also includes a limiting member and a limiting shaft, wherein the limiting member is located above the supporting member, and the limiting member is pivotally arranged between a limiting position and a leaving position through the limiting shaft. When the limiting member is located at the limiting position, the minimum dimension between the end portion of the limiting member away from the first end and the bottom wall of the supporting member is smaller than the thickness of the wall body, so that the limiting member can prevent the wall body located at the storage position from moving toward the first end.

6. The pallet box according to claim 5, characterized in that: The wall body has a guide surface, and along the height direction of the wall body, the guide surface is located on the side of the wall body lower beam close to the wall body upper beam and connected to the wall body lower beam, and the end of the guide surface away from the wall body upper beam is flush with the box inner surface of the wall body, and the guide surface is inclined in the height direction of the wall body. Along the thickness direction of the wall body, the end of the guide surface away from the wall body upper beam is closer to the inner side of the wall body than the other end close to the wall body upper beam. When the wall body is located in the storage position, the guide surface is located at the limiting member along the width direction of the wall body. During the process of the wall body moving from the storage position to the flat position, the guide surface is used to guide the movement of the limiting member to avoid the limiting member blocking the lower beam of the wall body.

7. The pallet box according to claim 1, characterized in that: The chassis further includes a fork-lifting portion, which is located below the carrying portion and has a slideway interval between the fork-lifting portion and the carrying portion, and the supporting member is located in the slideway interval.

8. The pallet box according to claim 7, characterized in that: The corners of the chassis are provided with force transmission parts, which include an upper force transmission part, a horizontal force transmission part, and a lower force transmission part. The horizontal force transmission part is horizontally arranged and fits the lower surface of the higher one of the side support member and the end support member. The upper force transmission part and the lower force transmission part are both parallel to the height direction of the chassis and are connected to the horizontal force transmission part. The upper force transmission part is located on the outside of the horizontal force transmission part and is connected to the bearing part. The lower force transmission part is located on the outside of the horizontal force transmission part and is connected to the fork-lifting part. The lower force transmission part and the upper force transmission part are perpendicular to each other.

9. The pallet box according to claim 8, characterized in that: The corners of the bearing part are provided with first stacking blocks, the corners of the fork-lifting part are provided with supporting legs, the upper force transmitting part is connected to the frame of the bearing part and the first stacking blocks, and the lower force transmitting part is connected to the supporting legs.

10. The pallet box according to claim 9, characterized in that: The end wall has a second stacking block connected to the end column of the end wall. When the pallet box is in an assembled state, a portion of the second stacking block is overlapped to the first stacking block.

11. The pallet box according to claim 10, characterized in that: The end wall further comprises an anti-expansion barrier wall. When the pallet box is in the assembled state, the anti-expansion barrier wall is located inside a portion of the first stacking block.

12. The pallet box according to claim 8, characterized in that The force transmission member has a long connecting plate avoidance groove, and when the pallet box is in an assembled state, the lower end of the end wall is located in the long connecting plate avoidance groove.

13. The pallet box according to claim 1, characterized in that The pallet box further includes a latch, which is movably connected to the side wall along the height direction of the side wall. The side wall lower beam of the side wall has a first retaining hole, and the load-bearing portion side beam of the load-bearing portion has a second retaining hole. When the side wall is in the upright position, the latch can pass through the first retaining hole and the second retaining hole in sequence to maintain the side wall in the upright position.

14. The pallet box according to claim 1, characterized in that The corners of the bearing portion are provided with avoidance portions, and when the pallet box is in an assembled state, the side columns of the side walls are located in the avoidance portions.

15. The pallet box according to claim 1, characterized in that The side column of the side wall has an end surface away from the center of the side wall along the width direction of the side wall, and the end column of the end wall is provided with a connecting pin. The connecting pin protrudes from the inner surface of the end wall along the thickness direction of the end wall. When the pallet box is in an assembled state, the connecting pin enters the connecting hole to prevent the end wall from moving up and down relative to the side wall.

16. The pallet box according to claim 1, characterized in that When the pallet box is in an assembled state, the position height of the end wall upper beam of the end wall is higher than the position height of the side wall upper beam, and a third stacking block is provided at the top end of the end column of the end wall.

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