Mechanism for increasing stowage rate and using method thereof

Abstract

The invention provides a mechanism for increasing the stowage rate and a using method thereof, and relates to the technical field of logistics transportation, the mechanism for increasing the stowage rate comprises a loading assembly, the loading assembly is arranged between two layers of appliances to be loaded, and the loading assembly is provided with a first limiting part for fixing a single appliance on the upper layer; the second limiting part is used for fixing a single appliance on the lower layer, and the first limiting part is rotationally connected with the second limiting part; and the control assembly is used for controlling the first limiting part and the second limiting part to be movably arranged in the horizontal direction of the appliance so as to fix appliances of different sizes, and the problem that in the prior art, space utilization is insufficient when a truck loads the appliance is solved.

Description

Technical Field

[0001] The present invention relates to the field of logistics and transportation technology, and in particular to a mechanism for improving the stacking rate and a method for using the mechanism. Background Art

[0002] In the automotive manufacturing industry, parts recycling is a vital part of supply chain management. However, due to the various specifications of loading equipment provided by suppliers, the space utilization of trucks is often insufficient, especially the inability to effectively use the upper space to carry the second layer of equipment, thus limiting the truck's loading rate.

[0003] Based on the problems existing in the prior art, there is currently no better solution. Summary of the invention

[0004] The main purpose of the present invention is to provide a mechanism for improving the stacking rate and a method for using the mechanism to solve the problem of insufficient space utilization when loading equipment on a truck in the prior art.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a mechanism for improving the stacking rate is provided. The mechanism for improving the stacking rate comprises: a loading assembly, the loading assembly is arranged between two layers of utensils to be loaded, the loading assembly has a first limit part for fixing a single utensils on the upper layer, and a second limit part for fixing a single utensils on the lower layer, the first limit part is rotatably connected to the second limit part; and a control assembly, the control assembly is used to control the first limit part and the second limit part to be movably arranged along the horizontal direction of the utensils to fix utensils of different sizes.

[0006] Furthermore, the first limiting part and the second limiting part are connected via a rotating shaft, and the control component includes a driving member, which is transmission-connected to the rotating shaft. The driving member drives the first limiting part via the rotating shaft, and / or the second limiting part is movably arranged.

[0007] Furthermore, the first limiting portion and the second limiting portion both include: at least two guide members, at least two guide members are connected, and the extension direction of at least two guide members is set at an angle, each guide member is rotatably connected to the rotating shaft, and the driving member drives the guide member to move along the circumferential direction of the rotating shaft; multiple limiting blocks, multiple limiting blocks are slidably arranged along each guide member, and multiple limiting blocks are used to fix the device.

[0008] Furthermore, the limiting block of the first limiting portion and the limiting block of the second limiting portion are arranged to be away from each other along the horizontal direction of the device.

[0009] Furthermore, the loading mechanism also includes a locking assembly, which includes a first locking member, the first locking member having a first locking position for locking the guide member, and the first locking member having a first unlocking position for unlocking the guide member.

[0010] Furthermore, the first locking member includes: a gear, which is arranged in the guide member, the gear is connected to the rotating shaft in transmission, and a limiting member is connected to the gear, wherein a limiting groove is provided on the guide member, and the driving member drives the rotating shaft to rotate, thereby driving the gear to rotate, so that the limiting member cooperates with the limiting groove to realize the locking or unlocking of the guide member.

[0011] Furthermore, the locking assembly also includes a plurality of second locking members, each of which is arranged in each limit block, and the second locking members are telescopically arranged. The second locking members have a second locking state in which the second locking members extend out of the limit block to lock the instrument, and the second locking members have a second unlocking state in which the second locking members are retracted into the limit block to unlock the instrument.

[0012] Further, the shapes of the cross sections of the second locking members are set differently.

[0013] Furthermore, the control component also includes: multiple control chips, each control chip is arranged in each limit block; a main control unit, which is electrically connected to the multiple control chips, and the main control unit is used to receive size information of the equipment to be loaded, and control the movable setting of each limit block through each control chip.

[0014] According to another aspect of the present invention, a method for using a mechanism for improving the loading rate is provided, wherein the mechanism for improving the loading rate is the mechanism for improving the loading rate of the above-mentioned embodiment, and the method comprises: inputting first size information of the first layer of utensils to be loaded; the control component adjusts the position of the second limit part based on the first size information; placing the loading mechanism on the first layer of utensils to be loaded, and adjusting the second locking piece on the second limit part according to the first size information to achieve locking of the first layer of utensils to be loaded; inputting second size information of the second layer of utensils to be loaded; the control component adjusts the position of the first limit part based on the second size information; placing the second layer of utensils to be loaded on the first limit part, and adjusting the second locking piece on the first limit part according to the second size information to achieve locking of the second layer of utensils to be loaded.

[0015] By applying the technical solution of the present invention, the loading component is set to a first limit part and a second limit part, wherein the first limit part is located above the second limit part, the first limit part corresponds to the upper layer of the equipment and fixes the upper layer of the equipment, and the second limit part corresponds to the lower layer of the equipment and fixes the lower layer of the equipment, thereby realizing double-layer loading of the equipment, and the first limit part and the second limit part are controlled by the control component to move along the horizontal direction of the equipment to adapt to equipment of different sizes, thereby improving the applicability of the mechanism, thereby realizing efficient stacking of equipment of different specifications and improving the loading efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 It shows a schematic structural diagram of a first embodiment of a mechanism for improving stowage rate according to the present invention;

[0018] Figure 2 It shows a structural schematic diagram of a second embodiment of a mechanism for improving stowage rate according to the present invention;

[0019] Figure 3 It shows a structural schematic diagram of a third embodiment of a mechanism for improving stowage rate according to the present invention;

[0020] Figure 4 A schematic diagram showing the structure of a control assembly of a mechanism for improving stowage rate according to the present invention is shown;

[0021] Figure 5 A structural schematic diagram showing a method for using a mechanism for improving stowage rate according to the present invention is shown.

[0022] The above drawings include the following reference numerals:

[0023] 10. Loading components;

[0024] 11. A first limiting portion;

[0025] 111. Guide member;

[0026] 1111, limit slot;

[0027] 112, limit block;

[0028] 12. The second limiting part;

[0029] 13. Rotation axis;

[0030] 20. Control components;

[0031] 21. Driving parts;

[0032] 22. Control chip;

[0033] 23. General Control Department;

[0034] 30. Locking assembly;

[0035] 31. a first locking member;

[0036] 311, gear;

[0037] 32. Second locking member. DETAILED DESCRIPTION

[0038] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0039] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0040] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0041] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in a variety of different forms and should not be construed as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present application thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. In the accompanying drawings, for the sake of clarity, the thickness of the layers and regions may be enlarged, and the same reference numerals are used to represent the same devices, and thus their descriptions will be omitted.

[0042] Combination Figures 1 to 4 As shown, according to a specific embodiment of the present invention, a mechanism for improving the stowage rate is provided.

[0043] Specifically, Figure 1 , Figure 2 , Figure 3As shown, the mechanism for improving the stacking rate includes: a loading assembly 10, the loading assembly 10 is arranged between two layers of utensils to be loaded, the loading assembly 10 has a first limiting portion 11 for fixing a single utensils in the upper layer, and a second limiting portion 12 for fixing a single utensils in the lower layer, the first limiting portion 11 is rotatably connected to the second limiting portion 12; the control assembly 20 is used to control the first limiting portion 11 and the second limiting portion 12 to be movably arranged along the horizontal direction of the utensils to fix utensils of different sizes.

[0044] In this embodiment, by setting the loading component 10 as a first limit part 11 and a second limit part 12, wherein the first limit part 11 is located above the second limit part 12, the first limit part 11 corresponds to the upper layer of the equipment and fixes the upper layer of the equipment, and the second limit part 12 corresponds to the lower layer of the equipment and fixes the lower layer of the equipment, thereby realizing double-layer loading of the equipment, and controlling the first limit part 11 and the second limit part 12 to move along the horizontal direction of the equipment through the control component to adapt to equipment of different sizes, thereby improving the applicability of the mechanism, thereby realizing efficient stacking of equipment of different specifications and improving the loading efficiency of the equipment.

[0045] like Figure 4 As shown, the first limit portion 11 and the second limit portion 12 are connected via a rotating shaft 13, and the control assembly 20 includes a driving member 21, which is in transmission connection with the rotating shaft 13, and the driving member 21 drives the first limit portion 11 through the rotating shaft 13, and / or the second limit portion 12 is movably arranged. By using the rotating shaft 13 and the driving member 21, the first limit portion 11 and the second limit portion 12 can be precisely controlled, so that the first limit portion 11 and the second limit portion 12 can be flexibly moved to adapt to appliances of different specifications. At the same time, this design allows automatic control, reduces the need for manual operation, and improves production efficiency.

[0046] Furthermore, the first limiting portion 11 and the second limiting portion 12 both include: at least two guide members 111, at least two guide members 111 are connected, and the extension direction of at least two guide members 111 is set at an angle, each guide member 111 is rotatably connected to the rotating shaft 13, and the driving member 21 drives the guide member 111 to move circumferentially along the rotating shaft 13; a plurality of limiting blocks 112, the plurality of limiting blocks 112 are slidably arranged along each guide member 111, and the plurality of limiting blocks 112 are used to fix the device.

[0047] Specifically, the first limiting portion 11 includes two guide members 111. Since the two guide members 111 are rotatably connected to the rotating shaft 13, the two guide members 111 can rotate around the rotating shaft 13 to accommodate appliances of different widths. The length of the guide member 111 can be adjusted according to the width of the carriage to accommodate loading requirements of different widths. In this embodiment, the guide member 111 is a track. Each guide member 111 is provided with at least two limiting blocks 112, and the limiting blocks 112 can slide on the guide member 111 to adjust according to the position of the appliance, thereby achieving the fixation of appliances of different specifications. The surface of each limiting block 112 is covered with anti-slip material to ensure the stability of the appliance during transportation.

[0048] Furthermore, the limiting block 112 of the first limiting portion 11 and the limiting block 112 of the second limiting portion 12 are arranged to be away from each other in the horizontal direction of the appliance. This arrangement enables the limiting block 112 of the first limiting portion 11 and the limiting block 112 of the second limiting portion 12 to fix the upper and lower layers of appliances, so as to achieve efficient stacking of the appliances.

[0049] Further, the loading mechanism also includes a locking assembly 30, which includes a first locking member 31, the first locking member 31 having a first locking position for locking the guide member 111, and the first locking member 31 having a first unlocking position for unlocking the guide member 111. When the first locking member 31 is in the first locking position, the first locking member 31 can fix or lock the guide member 111 in a specific position. This is usually to ensure the stability and safety of the loading mechanism when performing loading operations. For example, in a crane or other lifting equipment, the locking mechanism can prevent the load from accidentally sliding or moving during the lifting process. When the first locking member 31 is in the first unlocking position, the first locking member 31 allows the guide member 111 to be released from the locked position. This enables the loading mechanism to flexibly perform different loading operations, or perform maintenance and inspection when necessary.

[0050] Furthermore, the first locking member 31 includes: a gear 311, which is arranged in the guide member 111, and the gear 311 is connected to the rotating shaft 13 in transmission. A limiting member is connected to the gear 311, wherein a limiting groove 1111 is provided on the guide member 111, and the driving member 21 drives the rotating shaft 13 to rotate, thereby driving the gear 311 to rotate, so that the limiting member cooperates with the limiting groove 1111 to realize the locking or unlocking of the guide member 111.

[0051] Through the cooperation of the gear and the limiter, the guide member can be simply locked and unlocked, which improves the convenience of operation. The design of the limiter groove allows the position of the limiter to be adjusted within a certain range to meet different locking requirements. In this embodiment, the limiter can be set as a limit pin, a limit block, a limit clamp, etc.

[0052] Furthermore, the locking assembly 30 further includes a plurality of second locking members 32, each of which is disposed in each of the limit blocks 112, and the second locking members 32 are telescopically disposed, and the second locking members 32 have a second locking state in which the second locking members 32 extend out of the limit blocks 112 to lock the device, and a second unlocking state in which the second locking members 32 retract into the limit blocks 112 to unlock the device. The telescopic design of the second locking members 32 makes the locking and unlocking process more convenient, and the user can operate quickly, thereby improving the use efficiency. When the second locking members 32 extend out of the limit blocks 112, the device can be effectively locked to prevent the device from accidentally moving, thereby improving safety.

[0053] Furthermore, the cross-sectional shapes of the second locking member 32 are set differently to accommodate appliances of different specifications.

[0054] It should be noted that a plurality of holes are provided on the device to be loaded, and the second locking member 32 is inserted into the holes to lock the device.

[0055] Furthermore, the control assembly 20 further includes: a plurality of control chips 22, each of which is disposed in each limit block 112; a general control unit 23, which is electrically connected to the plurality of control chips 22, and is used to receive size information of the device to be loaded, and to control the movable setting of each limit block 112 through each control chip 22. This arrangement improves the degree of automation of the mechanism.

[0056] like Figure 5 As shown, according to another aspect of the present invention, a method for using a mechanism for improving the stacking rate is provided, the mechanism for improving the stacking rate is the mechanism for improving the stacking rate of the above-mentioned embodiment, and the mechanism for improving the stacking rate includes: a loading assembly 10, the loading assembly 10 is arranged between two layers of utensils to be loaded, the loading assembly 10 has a first limiting portion 11 for fixing a single utensil on the upper layer, and a second limiting portion 12 for fixing a single utensil on the lower layer, the first limiting portion 11 is rotatably connected to the second limiting portion 12; a control assembly 20, the control assembly 20 is used to control the first limiting portion 11 and the second limiting portion 12 to be movably arranged along the horizontal direction of the utensil to fix utensils of different sizes.

[0057] In this embodiment, by setting the loading component 10 as a first limit part 11 and a second limit part 12, wherein the first limit part 11 is located above the second limit part 12, the first limit part 11 corresponds to the upper layer of the equipment and fixes the upper layer of the equipment, and the second limit part 12 corresponds to the lower layer of the equipment and fixes the lower layer of the equipment, thereby realizing double-layer loading of the equipment, and controlling the first limit part 11 and the second limit part 12 to move along the horizontal direction of the equipment through the control component to adapt to equipment of different sizes, thereby improving the applicability of the mechanism, thereby realizing efficient stacking of equipment of different specifications and improving the loading efficiency of the equipment.

[0058] The methods of using the mechanism to increase the stowage factor include:

[0059] S11: Input the first size information of the first layer of equipment to be loaded.

[0060] In step S11, the first size information includes length information, width information, and height information.

[0061] S12: The control component adjusts the position of the second limiting portion 12 based on the first size information.

[0062] In step S12 , the general control unit 23 controls the guide member 111 of the second limiting portion 12 to be adjusted to a proper position according to the first size information, and controls the limiting block 112 to slide to a proper position.

[0063] S13: placing the loading mechanism on the first layer of the utensils to be loaded, and adjusting the second locking member 32 on the second limiting portion 12 according to the first size information to achieve locking of the first layer of the utensils to be loaded.

[0064] In step S13, the control component 20 controls the first locking member 31 to position the guide member 111 and controls the second locking member 32 to lock the tool. After one tool is fixed, steps S11 and S12 are repeated until all tools on the first layer are loaded.

[0065] S14: Input the second size information of the second layer of equipment to be loaded.

[0066] In step S14, the second size information includes length information, width information, and height information.

[0067] S15: The control component adjusts the position of the first limiting portion 11 based on the second size information.

[0068] S16: placing the second layer of utensils to be loaded on the first limiting portion 11, and adjusting the second locking member 32 on the first limiting portion 11 according to the second size information to achieve locking of the second layer of utensils to be loaded.

[0069] In other embodiments, the method further includes: monitoring the vehicle operation status and loading status in real time through a GPS system and an intelligent control system to ensure the safety and efficiency of the transportation process. After arriving at the destination, first unlock the locking mechanism through the control system, then use the unloading equipment to unload the second layer, unload the first layer of equipment together with the mechanism after the second layer of unloading is completed, unlock the locking mechanism after unloading, and place the mechanism in the transport truck for subsequent equipment loading.

[0070] Through the above steps, the use of a mechanism to increase the stacking rate can reduce space waste and transportation costs caused by different sizes of equipment. At the same time, by flexibly adjusting the guide and the slidable limit block, the adaptability and flexibility of loading are improved, which is suitable for the loading needs of equipment of various sizes. In addition, the application of intelligent assistance and control systems can further improve loading efficiency and accuracy, bringing significant economic benefits to the supply chain management of the automotive manufacturing industry. It is of great significance to improve the loading efficiency and reduce costs in the process of recycling and picking up automotive parts.

[0071] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0072] 1. Improve the truck loading rate: through the flexible adjustment of the guide and the sliding limit block, the different specifications of the equipment can be effectively stacked to improve the truck loading efficiency.

[0073] 2. Reduce logistics costs: reduce loading waste caused by different equipment specifications and reduce transportation costs.

[0074] 3. Improve transportation safety: The adaptive adjustment device and locking adjustment mechanism ensure the stability of the device during transportation and reduce the risk of cargo damage caused by vehicle vibration.

[0075] 4. Intelligent management: integrated intelligent assistance and control system, through the use of integrated hardware and system, the mechanism can be automatically adjusted according to the size of the equipment, improving the adjustment efficiency while improving the loading efficiency and accuracy.

[0076] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0077] In addition to the above, it should be noted that "one embodiment", "another embodiment", "embodiment", etc. mentioned in this specification refer to the specific features, structures or characteristics described in conjunction with the embodiment included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure or characteristic in conjunction with any embodiment, it is claimed that the realization of such feature, structure or characteristic in conjunction with other embodiments also falls within the scope of the present invention.

[0078] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0079] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A mechanism for improving stowage rate, characterized in that: include: A loading assembly (10), the loading assembly (10) being arranged between two layers of utensils to be loaded, the loading assembly (10) comprising a first limiting portion (11) for fixing a single utensil on the upper layer, and a second limiting portion (12) for fixing a single utensil on the lower layer, the first limiting portion (11) being rotatably connected to the second limiting portion (12); A control component (20) is used to control the first limiting part (11) and the second limiting part (12) to be movably arranged along the horizontal direction of the device to fix the device of different sizes.

2. The mechanism for improving stowage rate according to claim 1, characterized in that: The first limiting portion (11) and the second limiting portion (12) are connected via a rotating shaft (13); the control component (20) comprises a driving member (21) which is in transmission connection with the rotating shaft (13); the driving member (21) drives the first limiting portion (11) via the rotating shaft (13); and / or the second limiting portion (12) is movably arranged.

3. The mechanism for improving stowage rate according to claim 2, characterized in that: The first limiting portion (11) and the second limiting portion (12) both include: At least two guide members (111), at least two of the guide members (111) are connected, and the extension direction of at least two of the guide members (111) is arranged at an angle, each of the guide members (111) is rotationally connected to the rotating shaft (13), and the driving member (21) drives the guide member (111) to move along the circumferential direction of the rotating shaft (13); A plurality of limit blocks (112), wherein the plurality of limit blocks (112) are slidably arranged along each of the guide members (111), and the plurality of limit blocks (112) are used to fix the device.

4. The mechanism for improving stowage rate according to claim 3, characterized in that: The limiting block (112) of the first limiting portion (11) and the limiting block (112) of the second limiting portion (12) are arranged away from each other along the horizontal direction of the device.

5. The mechanism for improving stowage rate according to claim 3, characterized in that: The loading mechanism further comprises a locking assembly (30), wherein the locking assembly (30) comprises a first locking member (31), wherein the first locking member (31) has a first locking position for locking the guide member (111), and wherein the first locking member (31) has a first unlocking position for unlocking the guide member (111).

6. The mechanism for improving stowage rate according to claim 5, characterized in that: The first locking member (31) comprises: A gear (311), wherein the gear (311) is arranged in the guide member (111), the gear (311) is transmission-connected to the rotating shaft (13), a limiting member is connected to the gear (311), wherein a limiting groove (1111) is provided on the guide member (111), and the driving member (21) drives the rotating shaft (13) to rotate, thereby driving the gear (311) to rotate, so that the limiting member cooperates with the limiting groove (1111) to realize locking or unlocking of the guide member (111).

7. The mechanism for improving stowage efficiency according to claim 5, characterized in that: The locking assembly (30) further comprises a plurality of second locking members (32), each of the second locking members (32) being arranged in each of the limit blocks (112), the second locking members (32) being telescopically arranged, the second locking members (32) having a second locking state in which the second locking members (32) extend out of the limit blocks (112) to lock the device, and the second locking members (32) having a second unlocking state in which the second locking members (32) retract into the limit blocks (112) to unlock the device.

8. The mechanism for improving stowage efficiency according to claim 7, characterized in that: The shapes of the cross sections of the second locking member (32) are set differently.

9. The mechanism for improving stowage efficiency according to claim 5, characterized in that: The control component (20) further comprises: A plurality of control chips (22), each of the control chips (22) being arranged in each of the limit blocks (112); A general control unit (23), the general control unit (23) being electrically connected to the plurality of control chips (22), the general control unit (23) being used to receive size information of the device to be loaded, and to control the movable setting of each of the limit blocks (112) through each of the control chips (22).

10. A method for using a mechanism for improving stowage rate, characterized in that: The mechanism for improving the stowage rate is the mechanism for improving the stowage rate according to any one of claims 1 to 9, and the method comprises: Input the first size information of the first layer of equipment to be loaded; The control component adjusts the position of the second limiting portion (12) based on the first size information; Placing the loading mechanism on the first layer of utensils to be loaded, and adjusting the second locking member (32) on the second limiting portion (12) according to the first size information to achieve locking of the first layer of utensils to be loaded; Input the second size information of the second layer of equipment to be loaded; The control component adjusts the position of the first limiting portion (11) based on the second size information; The second layer of utensils to be loaded is placed on the first limiting portion (11), and the second locking piece (32) on the first limiting portion (11) is adjusted according to the second size information to achieve locking of the second layer of utensils to be loaded.

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