A collapsible tray box

Abstract

The utility model provides a kind of foldable tray box, it is related to storage and transport container technical field, including bottom plate, the first end wall of any side of bottom plate, the second end wall of being set on bottom plate and the other side opposite with first end wall, the first side wall of being set on the third side of bottom plate and being located inside first end wall and second end wall, the utility model provides a kind of foldable tray box, its three sides are provided with wallboard, after assembly, tray box wallboard strength is sufficient, can provide reliable protection for goods in box, can ensure that tray box filled with goods can be stacked simultaneously, convenient storage and transportation, the fourth side of tray box is open design, and it is equipped with side-pull type roller shutter door, both facilitate the quick loading and unloading of goods, and can effectively prevent irregular and small goods from being lost or damaged when the roller shutter door is closed.

Description

Technical Field

[0001] This utility model relates to the field of storage and transportation container technology, and in particular to a foldable pallet box. Background Technology

[0002] Nowadays, in the logistics industry, especially at the starting points such as freight forwarding points or collection points, there are a large number of goods of different sizes, packaging and shapes. When these goods need to be transferred to freight stations or cargo processing centers, in order to prevent the goods from being lost or damaged, box trucks or express delivery vehicles are usually used for transportation. Loading and unloading are often done manually, which requires a lot of manpower and causes vehicles to wait for a long time, increasing costs.

[0003] With the shift in picking methods and the improvement in cargo handling capacity at freight stations and processing centers, goods can be placed directly in pallet boxes at starting points such as freight forwarding points or collection points. The full pallet boxes can then be transported to the freight station or cargo processing center. In this case, ordinary trucks can be used to transport the pallet boxes, and pallet trucks or forklifts can be used for loading and unloading. On the return trip of the trucks, empty pallet boxes can be transported to freight forwarding points or collection points to avoid empty pallet boxes. This can effectively reduce the use of manpower, shorten vehicle waiting time, improve processing efficiency, and reduce transfer costs.

[0004] To improve transportation efficiency and reduce the space occupied by pallet boxes, pallet boxes should preferably be foldable.

[0005] Pallets used for transporting or storing bulk goods are generally box pallets or cage pallets, which are usually equipped with side panels and some are equipped with top covers.

[0006] Pallet boxes with side panels make it inconvenient to use machinery (such as forklifts) to load and unload goods, and loading and unloading are more difficult for larger and heavier goods.

[0007] To facilitate loading and unloading, some pallet boxes are equipped with side panels on three sides and an open side on the other. These types of pallets cannot provide protection for irregular and small goods and are easily lost or damaged.

[0008] Some pallet boxes have roller shutters on one or two sides or ends. Some roller shutters are installed on the top of the box, while others are installed on the bottom.

[0009] For example, the rolling shutter door of an air transport container disclosed in Chinese patent document CN 213621543 U has a rolling shutter roller located at the top of the container, occupying the loading space of the container. At the same time, a spring latch lock is installed at the bottom of the rolling shutter, which protrudes from the top plate of the pallet, which is not conducive to the loading and unloading of goods.

[0010] For example, a foldable pallet disclosed in Chinese patent document CN 105501620 A has a roller shutter side panel storage device located inside the bottom plate of the pallet. The structure is complex and difficult to maintain. Furthermore, since the roller shutter side panel storage device occupies two sides of the pallet, the pallet can only be accessed by forks in both directions, which is inconvenient for pallet trucks or forklifts to operate on site.

[0011] As disclosed in Chinese patent document CN 109178693 A, the intelligent mobile warehouse has its roller shutter installed inside the hollow structure of the base plate and the third side plate. Since the base plate and the third side plate are hollow structures, the structural dimensions of the base plate and the third side plate must be increased, which occupies the cargo space. At the same time, in order to facilitate the removal and retrieval of the roller shutter, the roller shutter is required to have good flexibility, which inevitably leads to insufficient strength of the roller shutter and a decrease in the ability to protect the goods in the warehouse.

[0012] Therefore, there is a need to provide a foldable pallet box to solve the above problems. Summary of the Invention

[0013] The purpose of this invention is to solve the problem that existing pallets cannot provide protection for irregular and small goods, and are easily lost or damaged.

[0014] To achieve the above objectives, the present invention adopts the following technical solution: a foldable pallet box, comprising a base plate, a first end wall on any side of the base plate, a second end wall on the opposite side of the base plate, a first side wall on the third side of the base plate and located inside the first and second end walls, and a first and second roller shutter door on the fourth side of the base plate opposite to the first side wall. The first side wall, the first end wall, the first roller shutter door, the second end wall, and the second roller shutter door can all be folded and laid flat on the upper surface of the base plate.

[0015] Furthermore, stacking columns are provided at the four corners of the base plate. The top surface of the stacking column is higher than the highest point of the second end wall in the folded state. The top dimension of the stacking column is consistent with the inner cavity dimension of the square cup-shaped support leg at the bottom of the base plate. The stacking column is provided with an elongated hole and a positioning groove that are hinged to the first end wall and the second end wall. The third side of the base plate is provided with a positioning seat that is hinged to the first side wall. Furthermore, the first and second columns of the first and second end walls are in the form of cold-formed channel steel, with their opening sides located inside the pallet box. The lower part of the first and second columns is provided with hinge holes for connection with the bottom plate. The first and second end walls are hinged to the stacking columns on the bottom plate through a rotating shaft. The outer side of the first and second columns is provided with a first positioning block and a second positioning block. The first and second positioning blocks cooperate with the positioning grooves provided on the stacking columns on the bottom plate to achieve positioning of the first and second end walls when the pallet is assembled. Furthermore, the lower part of the first sidewall is provided with a hinge hole, and the first sidewall is hinged to the positioning seat on the base plate through a rotating shaft. The upper two ends of the first sidewall are provided with first pin positioning devices. When the pallet box is assembled, it is positioned and connected to the first end wall and the second end wall respectively through the first pin positioning devices to form a whole.

[0016] Furthermore, the first and second roller shutter doors are side-pull roller shutter doors, including a first roller shutter roller and a second roller shutter roller, a first roller shutter and a second roller shutter, a first upper guide rail and a second upper guide rail, a first roller shutter lower connector and a second roller shutter lower connector, a first roller shutter pull rod and a second roller shutter pull rod. The first roller shutter roller is installed in the grooved cavity of the first column on the first end wall, and the second roller shutter roller is installed in the grooved cavity of the second column on the second end wall. One end of the first roller shutter is fixed to the first roller shutter roller, and the other end is connected to the first roller shutter pull rod. One end of the second roller shutter is fixed to the second roller shutter roller, and the other end is connected to the second roller shutter pull rod. When the roller shutter doors are opened, the first roller shutter is wound around the first roller shutter roller, and the second roller shutter is wound around the second roller shutter roller.

[0017] Furthermore, a first roller blind rod and a second roller blind rod are connected between the first roller blind and the second roller blind. The cross-section of the first roller blind rod and the second roller blind rod is in the form of cold-formed inward rolled channel steel. When the first roller blind and the second roller blind are in the open state, the lower connecting piece of the first roller blind retracts into the grooved cavity of the first roller blind rod, and the lower connecting piece of the second roller blind retracts into the grooved cavity of the second roller blind rod.

[0018] Furthermore, the cross-section of the upper guide rail is in the form of cold-formed inwardly rolled channel steel, and the opening width of its inwardly rolled edge is greater than the width of the roller blind rod. One end of the first upper guide rail is hinged to the first column of the first end wall, and one end of the second upper guide rail is hinged to the column of the second end wall. The other ends of the first and second upper guide rails are provided with a second pin positioning device. When the pallet box is assembled, the second pin positioning device positions and connects the first and second upper guide rails into a whole.

[0019] Compared with the prior art, the advantages and positive effects of this utility model are as follows: This invention provides a foldable pallet box with wall panels on three sides. When assembled, the pallet box wall panels are strong enough to provide reliable protection for the goods inside, while also ensuring that the fully loaded pallet box can be stacked for easy storage and transportation. The fourth side of the pallet box is an open design and equipped with a side-pull roller shutter door, which facilitates quick loading and unloading of goods and effectively prevents the loss or damage of irregular or small items when the roller shutter door is closed. Attached Figure Description

[0020] Figure 1This is a schematic diagram of the overall structure of the first embodiment of the present invention (roller shutter door closed); Figure 2 This is a schematic diagram of the overall structure of the first embodiment of the present invention (roller shutter door in open state); Figure 3 This is a schematic diagram of the side wall of this utility model; Figure 4 This is a schematic diagram of the base plate of this utility model; Figure 5 This is a schematic diagram of the roller shutter door of this utility model; Figure 6 This is a schematic diagram of the upper guide rail of this utility model after folding (roller shutter door in open state). Figure 7 This is a cross-sectional diagram of the roller blind and the support column after folding. Figure 8 This is a schematic diagram of the folded version of this utility model.

[0021] Legend: 1. Base plate; 101. Stacking column; 102. Square cup-shaped support leg; 103. Positioning seat; 2. First end wall; 201. First column; 202. First positioning block; 3. Second end wall; 301. Second column; 302. Second positioning block; 4. First side wall; 401. First pin positioning device; 5A. First roller shutter door; 5B. Second roller shutter door; 501A. First roller shutter roller; 501B. Second roller shutter roller; 502A. First roller shutter; 502B. Second roller shutter; 503A. First upper guide rail; 503B. Second upper guide rail; 504A. Lower connector of first roller shutter; 504B. Lower connector of second roller shutter; 505A. First roller shutter pull rod; 505B. Second roller shutter pull rod; 506. Second pin positioning device. Detailed Implementation

[0022] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0024] Examples, such as Figure 1 - Figure 8As shown, this utility model provides a foldable pallet box, including a base plate 1, a first end wall 2 on any side of the base plate 1, a second end wall 3 on the opposite side of the base plate 1, a first side wall 4 on the third side of the base plate 1 and located inside the first end wall 2 and the second end wall 3, and a first roller shutter door 5A and a second roller shutter door 5B on the fourth side of the base plate 1 opposite to the first side wall 4. The first side wall 4, the first end wall 2, the first roller shutter door 5A, the second end wall 3, and the second roller shutter door 5B can all be folded and laid flat on the upper surface of the base plate 1. Stacking posts 101 are provided at the four corners of the base plate 1. The top surface of the stacking posts 101 is higher than the highest point of the second end wall 3 in the folded state. The top dimension of column 101 is consistent with the inner cavity dimension of the square cup-shaped support leg 102 at the bottom of the base plate. The stacking column 101 is provided with elongated holes and positioning grooves that are hinged to the first end wall 2 and the second end wall 3. The third side of the base plate 1 is provided with a positioning seat 103 that is hinged to the first side wall 4. The first column 201 and the second column 301 of the first end wall 2 and the second end wall 3 have cross-sections of cold-formed channel steel, with their opening sides located inside the pallet box. The lower part of the first column 201 and the second column 301 is provided with hinge holes for connection to the base plate 1. The first end wall 2 and the second end wall 3 are hinged to the stacking column 101 on the base plate 1 via a pivot. A first positioning block 20 is provided on the outer side of the first column 201 and the second column 301. 2. The second positioning block 302, the first positioning block 202, and the second positioning block 302 cooperate with the positioning grooves provided on the stacking column 101 on the base plate 1 to position the first end wall 2 and the second end wall 3 when the pallet is assembled. The lower part of the first side wall 4 is provided with a hinge hole. The first side wall 4 is hinged to the positioning seat 103 on the base plate 1 through a rotating shaft. The upper two ends of the first side wall 4 are provided with first pin positioning devices 401. When the pallet box is assembled, it is positioned and connected to the first end wall 2 and the second end wall 3 as a whole through the first pin positioning devices 401 respectively. The first roller shutter door 5A and the second roller shutter door 5B are side-pull roller shutter doors, including the first roller shutter roller 501A and the second roller shutter roller 501B, the first roller shutter 502A and The second roller blind 502B, the first upper guide rail 503A and the second upper guide rail 503B, the first roller blind lower connector 504A and the second roller blind lower connector 504B, the first roller blind pull rod 505A and the second roller blind pull rod 505B, the first roller blind roller 501A is installed in the groove-shaped cavity of the first column 201 of the first end wall 2, the second roller blind roller 501B is installed in the groove-shaped cavity of the second column 301 of the second end wall 3, one end of the first roller blind 502A is fixed on the first roller blind roller 501A, and the other end is connected to the first roller blind pull rod 505A, one end of the second roller blind 502B is fixed on the second roller blind roller 501B, and the other end is connected to the second roller blind pull rod 505B;When the roller shutter door is opened, the first roller shutter 502A is wound around the first roller shutter roller 501A, and the second roller shutter 502B is wound around the second roller shutter roller 501B. A first roller shutter rod 505A and a second roller shutter rod 505B connect the first roller shutter 502A and the second roller shutter 502B. The cross-section of the first roller shutter rod 505A and the second roller shutter rod 505B is in the form of cold-formed inwardly rolled channel steel. When the first roller shutter door 5A and the second roller shutter door 5B are in the open state, the lower connecting piece 504A of the first roller shutter retracts into the grooved cavity of the first roller shutter rod 505A, and the lower connecting piece 504B of the second roller shutter retracts into the grooved cavity of the second roller shutter rod 505B. The first upper guide rail 503A and the second upper guide rail 503B have a cross-section of cold-formed inwardly rolled channel steel. The opening width of the inwardly rolled edge is greater than the width of the first roller blind rod 505A and the second roller blind rod 505B. One end of the first upper guide rail 503A is hinged to the first column 201 of the first end wall 2, and one end of the second upper guide rail 503B is hinged to the second column 301 of the second end wall 3. The other ends of the first upper guide rail 503A and the second upper guide rail 503B are provided with a second pin positioning device 506. When the pallet box is assembled, the second pin positioning device 506 positions and connects the first upper guide rail 503A and the second upper guide rail 503B as a whole.

[0025] The effect achieved by this embodiment is that when changing from the assembled state to the folded state, the first roller blind pull rod 505A can be pushed towards the first end wall 2 until it is in contact with the first column 201 of the first end wall 2; at the same time, the second roller blind pull rod 505B is pushed towards the second end wall 3 until it is in contact with the second column 301 of the second end wall 3. Then, the second pin positioning device 506 is released, the first upper guide rail 503A is flipped downward so that its bottom surface is in contact with the first column 201 of the first end wall 2, and the first roller blind pull rod 505A is fitted into the cavity of the first upper guide rail 503A; the second upper guide rail 503B is flipped downward so that its bottom surface is in contact with the second column 301 of the second end wall 3, and the second roller blind pull rod 505B is fitted into the cavity of the second upper guide rail 503B. Subsequently, the first pin positioning device 401 is released, and the first side wall 4 is folded into the pallet box along the bottom hinge point and placed flat on the base plate 1; the first end wall 2, together with the first roller shutter door 5A connected to the first column 201, is folded into the pallet box along the bottom hinge point and placed flat on the base plate 1; the second end wall 3, together with the second roller shutter door 5B connected to the second column 301, is folded into the pallet box along the bottom hinge point and placed flat on the base plate 1, thus completing the folding process.

[0026] When transitioning from the folded state to the assembled state, the second end wall 3, along with the second roller shutter door 5B connected to the second column 301, is rotated upwards by 90 degrees along the bottom hinge point; the first end wall 2, along with the first roller shutter door 5A connected to the first column 201, is rotated upwards by 90 degrees along the bottom hinge point; the first side wall 4 is rotated upwards by 90 degrees along the bottom hinge point, and the first side wall 4, the first end wall 2, and the second end wall 3 are positioned and connected as a whole by the first pin positioning device 401. Then, the first upper guide rail 503A and the second upper guide rail 503B are rotated upwards by 90 degrees along their respective hinge points, and the first upper guide rail 503A and the second upper guide rail 503B are connected as a whole by the second pin positioning device 506. Finally, the first roller shutter rod 505A and the second roller shutter rod 505B are pulled towards the center until the first roller shutter rod 505A and the second roller shutter rod 505B on both sides are in contact with each other, completing the assembly process. It facilitates the quick loading and unloading of goods and effectively prevents the loss or damage of irregular and small goods when the roller shutter door is closed.

[0027] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A collapsible tray box comprising a base panel (1) characterised in that: The first end wall (2) on any side of the base plate (1), the second end wall (3) on the other side of the base plate (1) opposite to the first end wall (2), the first side wall (4) on the third side of the base plate (1) and located inside the first end wall (2) and the second end wall (3), and the first roller shutter door (5A) and the second roller shutter door (5B) on the fourth side of the base plate (1) opposite to the first side wall (4); the first side wall (4), the first end wall (2), the first roller shutter door (5A), the second end wall (3) and the second roller shutter door (5B) can all be folded and laid flat on the upper surface of the base plate (1).

2. A collapsible tray box according to claim 1, wherein: The base plate (1) has stacking columns (101) at four positions. The top surface of the stacking column (101) is higher than the highest point of the second end wall (3) in the folded state. The top dimension of the stacking column (101) is consistent with the inner cavity dimension of the square cup-shaped support leg (102) at the bottom of the base plate (1). The stacking column (101) is provided with an elongated hole and a positioning groove that are hinged to the first end wall (2) and the second end wall (3). The third side of the base plate (1) is provided with a positioning seat (103) that is hinged to the first side wall (4).

3. The collapsible tray box of claim 1, wherein: The first column (201) and the second column (301) of the first end wall (2) and the second end wall (3) are in the form of cold-formed channel steel. Their opening side is located inside the pallet box. The lower part of the first column (201) and the second column (301) is provided with hinge holes for connecting with the bottom plate (1). The first end wall (2) and the second end wall (3) are hinged to the stacking column (101) on the bottom plate (1) through a rotating shaft. The first positioning block (202) and the second positioning block (302) are provided on the outside of the first column (201) and the second column (301). The first positioning block (202) and the second positioning block (302) cooperate with the positioning grooves provided on the stacking column (101) on the bottom plate (1) to realize the positioning of the first end wall (2) and the second end wall (3) when the pallet is assembled.

4. The collapsible tray box of claim 1, wherein: The lower part of the first sidewall (4) is provided with a hinge hole. The first sidewall (4) is hinged to the positioning seat (103) on the base plate (1) through a rotating shaft. The upper two ends of the first sidewall (4) are provided with a first pin positioning device (401). When the pallet box is assembled, it is positioned and connected to the first end wall (2) and the second end wall (3) as a whole through the first pin positioning device (401).

5. The collapsible tray box of claim 1, wherein: The first roller shutter door (5A) and the second roller shutter door (5B) are side-pull roller shutter doors, including a first roller shutter roller (501A) and a second roller shutter roller (501B), a first roller shutter (502A) and a second roller shutter (502B), a first upper guide rail (503A) and a second upper guide rail (503B), a first roller shutter lower connector (504A) and a second roller shutter lower connector (504B), a first roller shutter pull rod (505A) and a second roller shutter pull rod (505B), and the first roller shutter roller (501A) is installed in the groove of the first column (201) on the first end wall (2). Inside the cavity, the second roller blind (501B) is installed in the groove-shaped cavity of the second column (301) of the second end wall (3). One end of the first roller blind (502A) is fixed on the first roller blind (501A), and the other end is connected to the first roller blind pull rod (505A). One end of the second roller blind (502B) is fixed on the second roller blind (501B), and the other end is connected to the second roller blind pull rod (505B). When the roller blind door is opened, the first roller blind (502A) is wound on the first roller blind (501A), and the second roller blind (502B) is wound on the second roller blind (501B).

6. A foldable pallet box according to claim 5, characterized in that: The first roller blind (502A) and the second roller blind (502B) are connected by a first roller blind rod (505A) and a second roller blind rod (505B). The cross-section of the first roller blind rod (505A) and the second roller blind rod (505B) is in the form of cold-formed inward rolled channel steel. When the first roller blind door (5A) and the second roller blind door (5B) are in the open state, the lower connecting piece (504A) of the first roller blind is retracted into the grooved cavity of the first roller blind rod (505A), and the lower connecting piece (504B) of the second roller blind is retracted into the grooved cavity of the second roller blind rod (505B).

7. A foldable pallet box according to claim 5, characterized in that: The first upper guide rail (503A) and the second upper guide rail (503B) are in the form of cold-formed inward rolled channel steel. The opening width of the inward rolled edge is greater than the width of the first roller blind rod (505A) and the second roller blind rod (505B). One end of the first upper guide rail (503A) is hinged to the first column (201) of the first end wall (2). One end of the second upper guide rail (503B) is hinged to the second column (301) of the second end wall (3). The other end of the first upper guide rail (503A) and the second upper guide rail (503B) is provided with a second pin positioning device (506). When the pallet box is assembled, the second pin positioning device (506) positions and connects the first upper guide rail (503A) and the second upper guide rail (503B) as a whole.

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