Conveying device

Abstract

The utility model discloses a conveying device, the conveying device has a first direction and a third direction which are intersected, and the conveying device comprises a plurality of chain assemblies and a plurality of buckle assemblies. The multiple chain assemblies are arranged in the first direction. The multiple buckle assemblies are arranged in the first direction, each buckle assembly comprises a roller and a buckle piece, the buckle pieces are connected with the chain assemblies, the rollers are connected with the buckle pieces, at least parts, away from the chain assemblies, of the rollers in the third direction protrude out of the buckle pieces, and the rollers rotate relative to the buckle pieces and are used for conveying battery cells. According to the conveying device, dust can be reduced in the transferring process of the battery cells.

Description

Technical Field

[0001] This application relates to the technical field of the transportation of battery cells, and particularly to a transportation device. Background Art

[0002] During the automated production process of battery cells, it is usually necessary to use a transportation device to connect the battery cells during the manufacturing process between various devices. In traditional transportation devices, the conveying member is usually a belt. When the battery cell is conveyed to the end point, the running belt will rub against the bottom of the battery cell bearing mechanism to generate dust. At the same time, the belt will also rub against the belt edge during its own operation to generate dust. The generated dust is likely to float onto the battery cell, thereby affecting the quality of the battery cell. Utility Model Content

[0003] In view of this, the purpose of this application is to overcome the deficiencies in the prior art and provide a transportation device that can reduce the generation of dust during the transfer of battery cells.

[0004] To achieve the above purpose, the technical solution adopted in this application is as follows:

[0005] According to the transportation device of the embodiment of this application, the transportation device has an intersecting first direction and third direction. The transportation device includes: a plurality of chain assemblies arranged along the first direction; a plurality of buckle assemblies arranged along the first direction. The buckle assembly includes a roller and a buckle member. The buckle member is connected to the chain assembly, the roller is connected to the buckle member, and at least part of the roller extending away from the chain assembly along the third direction protrudes from the buckle member. The roller rotates relative to the buckle member and is used for transporting the battery cell.

[0006] The transportation device of this application has the following advantages:

[0007] In the transportation device of this application, the chain assembly drives along the first direction so that the conveyed item can be conveyed along the first direction. In this process, since the buckle member is connected to the chain assembly, in this way, the chain assembly can be isolated from the outside through the buckle member to avoid the chain assembly rubbing against the external environment to generate dust during the conveying process. At the same time, since at least part of the roller extending away from the chain assembly along the third direction protrudes from the buckle member, in this way, during the transportation process, it can make the roller directly contact the conveyed item. When the conveyed item is blocked, it can make the roller have a relative sliding tendency with the conveyed item. Also, since the roller rotates relative to the buckle member, therefore, the relative sliding between the roller and the conveyed item can be converted into the relative rolling between the conveyed item and the roller. In this way, rolling friction is generated between the conveyed item and the roller, reducing the sliding friction between the conveyed item and the transportation device and reducing the generation of dust. Therefore, the transportation device of this application can reduce the generation of dust during the transfer of battery cells.

[0008] For the conveying device according to an embodiment of the present application, the chain assembly includes chain links and chain plates. A plurality of the chain links are arranged along the first direction, the chain plates are used to connect adjacent chain links, and the buckle is connected to the chain link along the third direction.

[0009] For the conveying device according to an embodiment of the present application, the buckle includes a buckle body and an end cap. The buckle body is connected to the chain link, the end cap is connected to one end of the buckle body away from the chain link along the third direction, the roller is connected to the buckle body, and at least part of the roller protrudes from the end cap.

[0010] For the conveying device according to an embodiment of the present application, the buckle body has a first buckling part, the end cap has a second buckling part, an accommodation cavity is provided in the first buckling part, at least part of the roller is located in the accommodation cavity, the second buckling part is clamped with the first buckling part, and the end cap seals the accommodation cavity.

[0011] For the conveying device according to an embodiment of the present application, the second buckling part is an embedded part, a connection hole is provided on the first buckling part, the connection hole communicates with the accommodation cavity, the embedded part is located in the accommodation cavity, and at least part of the embedded part is located in the connection hole.

[0012] For the conveying device according to an embodiment of the present application, the second buckling part is an externally embedded part, a connection groove is provided on the first buckling part, the connection groove is located outside the accommodation cavity, and the externally embedded part is located in the connection groove.

[0013] For the conveying device according to an embodiment of the present application, an avoidance opening is provided through the end cap along the third direction. The buckle further includes a connecting shaft. The connecting shaft is located in the accommodation cavity, the roller is connected to the connecting shaft, the avoidance opening communicates with the accommodation cavity, and at least part of the roller protrudes from the avoidance opening.

[0014] For the conveying device according to an embodiment of the present application, the roller is sleeved on the connecting shaft.

[0015] For the conveying device according to an embodiment of the present application, the conveying device further has a second direction intersecting with the first direction and the third direction. The buckle body further includes a first connecting part and a second connecting part. The first connecting part and the second connecting part are oppositely arranged along the second direction, and the first connecting part and the second connecting part are respectively connected to two ends of the chain link.

[0016] For the conveying device according to an embodiment of the present application, the chain assembly further includes a mounting shaft. The mounting shaft is used to connect the chain link and the chain plate, and the first connecting part and the second connecting part are respectively connected to two ends of the mounting shaft. Brief Description of the Drawings

[0017] To more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application and should not be regarded as limiting the scope. For those of ordinary skill in the art, other relevant drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 Shows the schematic structural diagram of the conveying device according to Embodiment 1 of the present application;

[0019] Figure 2 Shows the exploded structural diagram of the conveying device according to Embodiment 1 of the present application;

[0020] Figure 3 Shows the schematic structural diagram of the conveying device according to Embodiment 2 of the present application;

[0021] Figure 4 Shows the exploded structural diagram of the conveying device according to Embodiment 2 of the present application;

[0022] Figure 5 Shows the schematic structural diagram of the buckle assembly according to Embodiment 1 of the present application;

[0023] Figure 6 Shows the exploded structural diagram of the buckle assembly according to Embodiment 1 of the present application;

[0024] Figure 7 Shows the schematic structural diagram of the buckle assembly according to Embodiment 2 of the present application;

[0025] Figure 8 Shows the exploded structural diagram of the buckle assembly according to Embodiment 2 of the present application;

[0026] Figure 9 Shows the schematic structural diagram of the chain assembly of the present application.

[0027] Main Element Symbol Description:

[0028] 100 - Chain assembly; 110 - Link; 120 - Chain plate; 130 - Mounting shaft;

[0029] 200 - Buckle assembly; 210 - Drum; 220 - Buckle; 221 - Buckle body; 2211 - First buckle part; 2212 - Accommodation cavity; 2213 - Connection hole; 2214 Connection groove; 2215 - First connection part; 2216 - Second connection part; 222 - End cover; 2221 - Second buckle part; 2222 - Avoidance opening; 223 - Connection shaft;

[0030] x - The first direction; y - The second direction; z - The third direction. Detailed implementation manners

[0031] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present application and should not be construed as limiting the present application.

[0032] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application.

[0033] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined.

[0034] In the present application, unless otherwise clearly specified and defined, the terms "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0035] In this application, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0036] Referring to Figure 1 and Figure 3 as shown, the conveying device involved in the embodiment of this application has an intersecting first direction x and third direction z, and the conveying device includes: a plurality of chain assemblies 100 and a plurality of buckle assemblies 200.

[0037] Specifically, the plurality of chain assemblies 100 are arranged along the first direction x; the plurality of buckle assemblies 200 are arranged along the first direction x. The buckle assembly 200 includes a roller 210 and a buckle 220. The buckle 220 is connected to the chain assembly 100, the roller 210 is connected to the buckle 220, and at least part of the roller 210 extending away from the chain assembly 100 along the third direction z protrudes from the buckle 220. The roller 210 rotates relative to the buckle 220 and is used for conveying the battery cells.

[0038] It should be noted that the first direction x is the direction indicated by x in Figure 1 and Figure 3 the third direction z is the direction indicated by z in Figure 1 and Figure 3

[0039] ​In the conveying device of the present application, the chain assembly 100 is driven in the first direction x so that the conveyed item can be conveyed in the first direction x. During this process, since the buckle 220 is connected to the chain assembly 100, thus, the chain assembly 100 can be isolated from the outside through the buckle 220 to avoid the generation of dust due to the friction between the chain assembly 100 and the external environment during the conveying process. At the same time, since the roller 210 protrudes at least partially away from the chain assembly 100 in the third direction z and protrudes beyond the buckle 220, thus, during the conveying process, the roller 210 can be in direct contact with the conveyed item. When the conveyed item is blocked and stopped, there is a relative sliding tendency between the roller 210 and the conveyed item. Also, since the roller 210 rotates relative to the buckle 220, therefore, the relative sliding between the roller 210 and the conveyed item can be converted into the relative rolling between the conveyed item and the roller 210. Thus, rolling friction is generated between the conveyed item and the roller 210, reducing the sliding friction between the conveyed item and the conveying device and reducing the generation of dust. Therefore, the conveying device of the present application can reduce the generation of dust during the transfer process of the battery cell.

[0040] Referring to Figure 2 and Figure 4 As shown, a plurality of chain links 110 are arranged in the first direction x, the chain plate 120 is used to connect adjacent chain links 110, and the buckle 220 is connected to the chain link 110 in the third direction z.

[0041] Specifically, in this embodiment, in each chain assembly 100, chain plates 120 are provided on both sides of the chain link 110 in the second direction y, and the chain link 110 is arranged between the two chain plates 120 to realize the connection of the two ends of two adjacent chain links 110 in the second direction y through the two chain plates 120 spaced apart in the second direction y.

[0042] In this embodiment, the plurality of chain links 110 can be connected in series in the first direction x through the chain plates 120 so that the chain assembly 100 can be driven in the first direction x, thereby realizing the transportation function of the chain assembly 100.

[0043] Referring to Figure 5 and Figure 7 As shown, the buckle 220 includes a buckle body 221 and an end cap 222. The buckle body 221 is connected to the chain link 110, and the end cap 222 is connected to one end of the buckle body 221 away from the chain link 110 in the third direction z. The roller 210 is connected to the buckle body 221 and protrudes at least partially beyond the end cap 222.

[0044] Specifically, in this embodiment, the end caps 222 of any adjacent snap components 200 are closely arranged to cover multiple chain components 100 through a plurality of end caps 222, thereby increasing the contact area between the snap component 200 and the conveyed item and improving the conveying stability of the conveyed item.

[0045] In this embodiment, since the snap body 221 is connected to the link 110, thus, the connection between the snap component 200 and the chain component 100 can be achieved through the snap body 221. At the same time, since the end cap 222 is connected to one end of the snap body 221 away from the link 110 along the third direction z, the roller 210 is connected to the snap body 221 and at least partially protrudes from the end cap 222. In this way, the roller 210 can be limited between the end cap 222 and the snap body 221, so that the roller 210 can rotate relative to the snap member 220 and can also prevent the roller 210 from detaching from the snap member 220.

[0046] Refer to Figure 6 and Figure 8 As shown, the snap body 221 has a first snap portion 2211, the end cap 222 has a second snap portion 2221, a receiving cavity 2212 is provided in the first snap portion 2211, at least a part of the roller 210 is located in the receiving cavity 2212, the second snap portion 2221 is snap-connected to the first snap portion 2211, and the end cap 222 seals the receiving cavity 2212.

[0047] In this embodiment, the connection between the snap body 221 and the end cap 222 can be achieved through the snap connection between the first snap portion 2211 and the second snap portion 2221. At the same time, at least a part of the roller 210 can be received in the receiving cavity 2212 so that the roller 210 can rotate relative to the snap member 220. Since at least a part of the roller 210 is located in the receiving cavity 2212 and the end cap 222 seals the receiving cavity 2212, therefore, the roller 210 can be covered by the end cap 222 to prevent the roller 210 from being displaced when rotating relative to the snap member 220, thereby improving the structural stability of the roller 210.

[0048] Embodiment 1

[0049] Refer to Figure 6 As shown, in Embodiment 1, the second snap portion 2221 is an embedded portion, a connection hole 2213 is provided on the first snap portion 2211, the connection hole 2213 communicates with the receiving cavity 2212, the embedded portion is located in the receiving cavity 2212 and at least partially located in the connection hole 2213.

[0050] In this embodiment, since the connection hole 2213 communicates with the accommodation cavity 2212 and the embedded part is located in the accommodation cavity 2212, in this way, the embedded part can be inserted into the connection hole 2213 from the inside of the accommodation cavity 2212 towards the outside of the accommodation cavity 2212, so that the embedded part can be at least partially located in the connection hole 2213, thereby realizing the clamping connection between the first clamping part 2211 and the second clamping part 2221. At the same time, when the first clamping part 2211 is clamped with the second clamping part 2221, the structure of the embedded part located in the accommodation cavity 2212 can exert a certain thrust on the structure of the embedded part located in the connection hole 2213, so that the embedded part can be firmly clamped with the hole wall of the connection hole 2213. Further, the connection hole 2213 can play a certain limiting role on the embedded part, so as to improve the connection stability between the first clamping part 2211 and the second clamping part 2221.

[0051] Specifically, in this embodiment, a plurality of connection holes 2213 are provided at both ends of the first clamping part 2211 along the second direction y, and a plurality of embedded parts are provided at both ends of the end cover 222 along the second direction y. Each embedded part is located in the accommodation cavity 2212, and each connecting part is at least partially located in any one of the connection holes 2213, so as to improve the connection stability between the first clamping part 2211 and the second clamping part 2221.

[0052] Embodiment 2

[0053] Referring to Figure 8 As shown, in Embodiment 2, the second clamping part 2221 is an externally embedded part, a connection groove is provided on the first clamping part 2211, the connection groove is located outside the accommodation cavity 2212, and the externally embedded part is located in the connection groove.

[0054] In this embodiment, since the connection groove is located outside the accommodation cavity 2212 and the externally embedded part is located in the connection groove, in this way, the externally embedded part can be inserted into the connection groove from the outside of the accommodation cavity 2212 towards the inside of the accommodation cavity 2212, thereby realizing the clamping connection between the first clamping part 2211 and the second clamping part 2221. At the same time, when the first clamping part 2211 is clamped with the second clamping part 2221, the connection groove located outside the accommodation cavity 2212 can facilitate the clamping connection between the externally embedded part and the first clamping part 2211, so as to improve the convenience of connection between the second clamping part 2221 and the first clamping part 2211.

[0055] Specifically, in this embodiment, connection grooves are provided at both ends of the first buckle portion 2211 along the second direction y. Each connection groove extends along the first direction x, and the opening of each connection groove faces away from the accommodation cavity 2212 along the second direction y. Both ends of the end cover 222 along the second direction y have outer embedding portions, and each outer embedding portion is located in a connection groove, so as to improve the connection stability between the outer embedding portion and the connection groove, and further improve the connection stability between the first buckle portion 2211 and the second buckle portion 2221.

[0056] Referring Figures 5 to 8 As shown, on the basis of Embodiment 1 and Embodiment 2, an avoidance opening 2222 is provided through the end cover 222 along the third direction z. The buckle member 220 further includes a connection shaft 223. The connection shaft 223 is located in the accommodation cavity 2212, and the roller 210 is connected to the connection shaft 223. The avoidance opening 2222 communicates with the accommodation cavity 2212, and at least part of the roller 210 protrudes from the avoidance opening 2222.

[0057] In this embodiment, the roller 210 can be connected to the buckle body 221 through the connection shaft 223, and the roller 210 can rotate relative to the buckle body 221. Since the avoidance opening 2222 is provided through the end cover 222 along the third direction z, and at least part of the roller 210 protrudes from the avoidance opening 2222, in this way, the roller 210 can protrude from the end cover 222 along the third direction z away from the chain assembly 100 at least partially through the avoidance opening 2222, so that the roller 210 protrudes from the buckle member 220 of the end cover 222 along the third direction z away from the chain assembly 100 at least partially, so that the roller 210 can be in direct contact with the piece to be conveyed.

[0058] In this embodiment, the roller 210 is sleeved on the connection shaft 223.

[0059] Specifically, in this embodiment, the connection shaft 223 extends along the second direction y, and both ends of the connection shaft 223 along the second direction y are respectively connected to both ends of the buckle body 221 along the second direction y. The roller 210 rotates relative to the connection shaft 223 around the second direction y, so that the relative sliding between the roller 210 and the piece to be conveyed can be converted into the relative rolling between the piece to be conveyed and the roller 210.

[0060] Referring Figure 1 、 Figure 3 、 Figure 6 and Figure 8As shown, on the basis of Embodiment 1 and Embodiment 2, the conveying device further has a second direction y intersecting with the first direction x and the third direction z. The buckle body 221 further 220 includes a first connecting portion 2215 and a second connecting portion 2216. The first connecting portion 2215 and the second connecting portion 2216 are arranged opposite to each other along the second direction y, and the first connecting portion 2215 and the second connecting portion 2216 are respectively connected to both ends of the link 110.

[0061] It should be noted that the second direction y is Figure 1 and Figure 3 the direction indicated by y in

[0062] In this embodiment, since the first connecting portion 2215 and the second connecting portion 2216 are arranged opposite to each other along the second direction y, and the first connecting portion 2215 and the second connecting portion 2216 are respectively connected to both ends of the link 110, thus, the connection between the buckle body 221 and the chain assembly 100 can be realized through the first connecting portion 2215 and the second connecting portion 2216, and further the connection between the buckle 220 and the chain assembly 100 can be realized. At the same time, the two ends of the chain assembly 100 along the second direction y can be covered through the first connecting portion 2215 and the second connecting portion 2216, so as to isolate the chain assembly 100 from the outside through the buckle body 221, and avoid the generation of dust due to the friction between the chain assembly 100 and the external environment during the conveying process.

[0063] Specifically, in this embodiment, the first buckle portion 2211 is located on one side of the chain assembly 100 along the third direction z. Both the first connecting portion 2215 and the second connecting portion 2216 are connected to the first buckle portion 2211, and the first connecting portion 2215 and the second connecting portion 2216 are respectively located at both ends of the first buckle portion 2211 along the second direction y, so as to cover the chain assembly 100 through the end cap 222, the first buckle portion 2211, the first connecting portion 2215 and the second connecting portion 2216, and isolate the chain assembly 100 from the outside through the buckle 220, and avoid the generation of dust due to the friction between the chain assembly 100 and the external environment during the conveying process.

[0064] Referring to Figure 1 、 Figure 3 and Figure 9 As shown, on the basis of Embodiment 1 and Embodiment 2, the chain assembly 100 further includes a mounting shaft 130. The mounting shaft 130 is used to connect the link 110 and the link plate 120, and the first connecting portion 2215 and the second connecting portion 2216 are respectively connected to both ends of the mounting shaft 130.

[0065] In this embodiment, the link 110 and the link plate 120 can be connected by the mounting shaft 130, so that relative rotation can occur between the link 110 and the link plate 120, thereby realizing the transmission function of the chain assembly 100. At the same time, since the first connecting portion 2215 and the second connecting portion 2216 are respectively connected to both ends of the mounting shaft 130, the chain assembly 100 and the buckle 220 can be connected by the mounting shaft 130, so that the buckle can rotate relative to the link 110 and / or the link plate 120, and further enabling the buckle 220 to adapt to the transmission process of the chain assembly 100, thereby enabling the buckle assembly 200 to achieve the transmission function.

[0066] The conveying device of the present application is used to convey the battery cells.

[0067] In the conveying device of the present application, since the conveying device can reduce the generation of dust during the transfer process of the battery cells, thus, the conveying device of the present application can reduce the impact on the quality of the battery cells when conveying the battery cells.

[0068] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0069] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. A conveying device, characterized in that: The conveying device has a first direction (x) and a third direction (z) intersecting each other, and the conveying device comprises: A plurality of chain assemblies (100) arranged along the first direction (x); A plurality of buckle assemblies (200) are arranged along the first direction (x), the buckle assemblies (200) comprising a roller (210) and a buckle member (220), the buckle member (220) being connected to the chain assembly (100), the roller (210) being connected to the buckle member (220), and at least a portion of the roller (210) away from the chain assembly (100) protruding from the buckle member (220) along the third direction (z), the roller (210) rotating relative to the buckle member (220), and being used to transport battery cells.

2. The conveying device according to claim 1, characterized in that The chain assembly (100) comprises a chain link (110) and a chain plate (120), wherein a plurality of the chain links (110) are arranged along the first direction (x), the chain plate (120) is used to connect adjacent chain links (110), and the buckle (220) is connected to the chain link (110) along the third direction (z).

3. The conveying device according to claim 2, characterized in that: The buckle (220) comprises a buckle body (221) and an end cover (222); the buckle body (221) is connected to the chain link (110); the end cover (222) is connected to an end of the buckle body (221) away from the chain link (110) along the third direction (z); and the roller (210) is connected to the buckle body (221) and at least partially protrudes from the end cover (222).

4. The conveying device according to claim 3, characterized in that: The buckle body (221) has a first buckle portion (2211), and the end cover (222) has a second buckle portion (2221); a receiving cavity (2212) is provided in the first buckle portion (2211), and at least part of the roller (210) is located in the receiving cavity (2212); the second buckle portion (2221) is buckled with the first buckle portion (2211), and the end cover (222) covers the receiving cavity (2212).

5. The conveying device according to claim 4, characterized in that: The second buckle portion (2221) is an embedded portion, a connecting hole (2213) is provided on the first buckle portion (2211), the connecting hole (2213) is communicated with the accommodating cavity (2212), the embedded portion is located in the accommodating cavity (2212), and at least part of it is located in the connecting hole (2213).

6. The conveying device according to claim 4, characterized in that The second buckle portion (2221) is an external embedded portion, and the first buckle portion (2211) is provided with a connecting groove, the connecting groove is located outside the accommodating cavity (2212), and the external embedded portion is located inside the connecting groove.

7. The conveying device according to claim 4, characterized in that The end cover (222) is provided with an escape opening (2222) penetrating along a third direction (z), the buckle (220) further comprises a connecting shaft (223), the connecting shaft (223) is located in the accommodating cavity (2212), the roller (210) is connected to the connecting shaft (223), the escape opening (2222) is communicated with the accommodating cavity (2212), and at least a portion of the roller (210) protrudes from the escape opening (2222).

8. The conveying device according to claim 7, characterized in that The roller (210) is sleeved on the connecting shaft (223).

9. The conveying device according to claim 3, characterized in that: The conveying device also has a second direction (y) intersecting with the first direction (x) and the third direction (z), and the buckle body (221) also includes a first connecting portion (2215) and a second connecting portion (2216), the first connecting portion (2215) and the second connecting portion (2216) are arranged opposite to each other along the second direction (y), and the first connecting portion (2215) and the second connecting portion (2216) are respectively connected to two ends of the chain link (110).

10. The conveying device according to claim 9, characterized in that The chain assembly (100) further comprises a mounting shaft (130), wherein the mounting shaft (130) is used to connect the chain link (110) and the chain plate (120), and the first connecting portion (2215) and the second connecting portion (2216) are respectively connected to two ends of the mounting shaft (130).

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