Conveying device for sawing flat ingots

The sawing roller device driven by the sprocket and transmission chain, combined with the dust cover design, solves the problems of easy damage to bevel gear transmission and aluminum powder entering the bearing seat, and improves the reliability and service life of the conveyor device.

CN223172023UActive Publication Date: 2025-08-01HENAN YIRUI NEW MATERIAL TECH CO LTD
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Patent Information

Application Number
CN202422088434.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-27
Publication Date
2025-08-01
Estimated Expiration
2034-08-27

AI Technical Summary

Technical Problem

The existing conveyor devices adopt the meshing transmission method of bevel gears and bevel gear boxes, which are easy to be damaged and have high maintenance costs. The lack of dustproof devices causes aluminum powder to enter the bearing seat to affect its normal rotation, reducing its service life.

Method used

Multiple sprockets and transmission chains are used for transmission, which drives the sawing roller to rotate, and a dust cover is installed at the connection of the bearing seat to prevent aluminum powder from entering. The sawing roller is designed to have a thick end and a thin middle structure to keep the flat ingots parallel.

Benefits of technology

It improves the service life of the bearing seat, reduces maintenance frequency and downtime, and ensures the stability and efficiency of flat ingot conveying.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of slab ingot processing equipment, in particular to a conveying device for sawing slab ingots, which comprises a base and a plurality of sawing roller ways rotationally arranged on the base, the plurality of sawing roller ways are sequentially arranged along the sawing direction of the slab ingots, and shafts at two ends of each sawing roller way are provided with bearing seats. Each bearing seat is fixedly connected to the base, and dust covers are arranged at the joints of shafts at the two ends of each saw cutting roller way and the bearing seats. The conveying device further comprises a transmission assembly, the transmission assembly comprises a plurality of chain wheels and transmission chains, the chain wheels are fixedly connected with the ends of the shafts of the saw cutting roller ways, each chain wheel is provided with transmission wheel teeth, and each transmission chain is arranged on the transmission wheel teeth on the same side of every two adjacent chain wheels in a sleeving mode. According to the conveying device for sawing the slab ingots, the plurality of chain wheels and the transmission chain are used for transmission, so that the plurality of sawing roller ways are driven to rotate; and the dustproof cover can well prevent aluminum powder generated by cutting the slab ingot from entering the bearing seat.
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Description

Technical Field

[0001] The utility model relates to the technical field of flat ingot processing equipment, and particularly relates to a conveying device for sawing flat ingots. Background Art

[0002] Aluminum alloy flat ingots are the main raw materials for high-quality aluminum alloy plates, strips and foils. Usually, when a conveying device conveys the flat ingots, a sawing device cuts them.

[0003] At present, the existing conveying device adopts a meshing transmission mode of bevel gears and a bevel gear box to drive the sawing roller table to rotate, so as to realize the conveying of flat ingots. However, due to the low meshing precision and large meshing clearance of the bevel gears, they are prone to frequent damage and the maintenance cost is relatively high. In addition, the downtime during maintenance is long, which seriously affects the conveying efficiency of flat ingots. Importantly, when the sawing device cuts the flat ingots, aluminum powder will be generated, and the aluminum powder will float in the air. There is no dust-proof device on the bearing seat of the existing conveying device, and the aluminum powder is easy to enter the bearing seat and affect its normal rotation. After a long time, it will even cause damage to it. Therefore, there is an urgent need for a conveying device for sawing flat ingots to solve the above problems. Summary of the Utility Model

[0004] In order to solve the technical problems that the existing conveying device adopts a meshing transmission mode of bevel gears and a bevel gear box, which is prone to frequent damage; and there is no dust-proof device on the bearing seat of the existing conveying device, and the aluminum powder generated during the cutting of flat ingots is easy to enter the bearing seat and cause damage to it, the utility model provides a conveying device for sawing flat ingots, which drives a plurality of sawing roller tables to rotate through a plurality of sprockets and transmission chains. The sprockets and transmission chains are convenient for maintenance; at the same time, the dust-proof cover can well prevent the aluminum powder generated by cutting the flat ingots from entering the bearing seat.

[0005] The utility model provides a conveying device for sawing flat ingots, which includes a base and a plurality of sawing roller tables rotatably arranged on the base. The plurality of sawing roller tables are arranged in sequence along the sawing direction of the flat ingots. Bearing seats are arranged on the shafts at both ends of each sawing roller table, and each bearing seat is fixedly connected to the base. Dust-proof covers are arranged at the joints of the shafts at both ends of each sawing roller table and the bearing seats; the conveying device further includes a transmission assembly, and the transmission assembly includes a plurality of sprockets and transmission chains. The sprockets are fixedly connected to the ends of the shafts of the sawing roller tables. Transmission teeth are arranged on each sprocket, and each transmission chain is sleeved on the transmission teeth on the same side of two adjacent sprockets. The sprocket at one end of the sawing roller table rotates to drive the transmission chain and the adjacent sprocket to rotate; through the transmission of a plurality of transmission chains, the rotation of a plurality of sawing roller tables is finally realized. Dust-proof covers are arranged at the joints of the shafts at both ends of each sawing roller table and the bearing seats; by arranging the dust-proof covers, the aluminum powder generated by the sawing device cutting the flat ingots cannot enter the bearing seat, thereby improving the service life of the bearing seat.

[0006] Furthermore, each bearing seat is fixedly connected to a fixing seat, each fixing seat is provided with a first threaded hole, and the base is evenly provided with a plurality of second threaded holes, and each first threaded hole and second threaded hole are fixedly connected by a bolt and nut. The bearing seat is locked and fixed to the base through the fixing seat.

[0007] Furthermore, the conveying device also includes a plurality of positioning wire plates, which are evenly arranged on the base and each positioning wire plate is located on the side of the fixed seat, each positioning wire plate is provided with a third threaded hole, each third threaded hole is threaded with a stud passing through the hole, and each stud can abut against the fixed seat.

[0008] Furthermore, each fixed seat is also fixedly connected to a support, each support is fixedly connected to a vertical plate, each vertical plate is provided with an axial hole, one end of each sawing roller shaft passes through the axial hole and is fixedly connected to a connecting shaft, each connecting shaft passes through the axial hole and is fixedly connected to the center of the sprocket, and a roller sleeve is provided between each connecting shaft and the sprocket. The support and vertical plate support the bearing seat, the bearing in the bearing seat, the roller sleeve, and the sprocket.

[0009] Furthermore, each of the sawing rollers has a structure that is thick at both ends and thin in the middle, and the thickness of each sawing roller is the same at both ends. The sawing rollers are designed with a thick structure at both ends and thin in the middle, so that when conveying an ingot, the ingot remains parallel and always centered on the sawing rollers, and the ingot is not likely to deviate.

[0010] Furthermore, the shafts at both ends of each sawing roller are rotatably connected to the bearings in the bearing seat; the shaft at one end of the sawing roller and the bearing seat are respectively provided with end caps and first transparent covers on both sides, and the shaft at the other end of the sawing roller and the bearing seat are respectively provided with second transparent covers on both sides. The shaft at the other end of the sawing roller passes through the second transparent covers and is fixedly connected to the connecting shaft, which is fixedly connected to the center of the sprocket; multiple dust covers are respectively provided between the shaft at one end of the sawing roller and the bearing seat near the first transparent cover, and between the shaft at the other end of the sawing roller and the bearing seat away from the second transparent cover. The dust covers serve to protect the bearing seat.

[0011] Further, the transmission assembly further includes a plurality of tensioning brackets and tensioning wheels. The plurality of tensioning brackets are evenly arranged on the base, and each tensioning bracket is located between two sawing roller paths. The height of the horizontal plane where the top of each tensioning bracket is located is greater than the height of the horizontal plane where the upper part of the transmission chain is located. Each tensioning wheel is rotatably arranged on the top of the tensioning bracket, and each tensioning wheel is provided with tensioning wheel teeth. Each tensioning wheel tooth is engaged with the transmission chain. The transmission chain may become loose or slack due to its own weight or long-term rotation. The tensioning wheel teeth jack up the transmission chain and keep the transmission chain in a tensioned state all the time, which is beneficial to the continuous rotation of the transmission chain.

[0012] Further, the conveying device further includes a driving motor arranged on the base. The output shaft of the driving motor is fixedly connected to the driving shaft. The driving shaft is provided with driving wheel teeth, and a transmission chain is sleeved on the driving wheel teeth and the transmission wheel teeth on one of the outermost chain wheels. When the driving motor starts, it drives the transmission wheel teeth on one of the outermost chain wheels to rotate, and then drives another chain wheel close to this chain wheel to rotate. Through the transmission of a plurality of transmission chains, the rotation of a plurality of sawing roller paths is finally realized.

[0013] Further, the conveying device further includes a protective cover, and the protective cover covers the plurality of transmission chains. The protective cover protects the transmission chain and prevents the transmission chain from being damaged.

[0014] Compared with the prior art, the utility model has the following technical effects:

[0015] The chain wheel (i.e., the transmission wheel teeth on the chain wheel) at one end of the sawing roller path rotates, driving the transmission chain and the chain wheel close to it (i.e., another sawing roller path) to rotate; through the transmission of a plurality of transmission chains, the rotation of a plurality of sawing roller paths is finally realized. The flat ingot is placed on a plurality of sawing roller paths, and after the plurality of sawing roller paths rotate, the flat ingot is conveyed to the sawing equipment. A dust-proof cover is arranged at the connection between the shaft at both ends of each sawing roller path and the bearing seat; by arranging the dust-proof cover, the aluminum powder generated by the sawing equipment cutting the flat ingot cannot enter the bearing seat, thereby increasing the service life of the bearing seat and preventing the bearing seat from being damaged. Description of the Drawings

[0016] Figure 1 is a schematic side view structure of the conveying device for sawing flat ingots of the utility model;

[0017] Figure 2 is a schematic top view structure of the conveying device of the utility model;

[0018] Figure 3 is a schematic structure diagram of the sawing roller path of the utility model;

[0019] Figure 4It is a schematic cross-sectional structure diagram of the sawing roller table of the present utility model;

[0020] The reference numerals in the drawings are as follows:

[0021] 1. Base;

[0022] 2. Sawing roller table; 21. Shaft; 22. Connecting shaft; 23. Roller sleeve; 24. End cover; 25. First transparent cover; 26. Second transparent cover;

[0023] 3. Bearing housing; 4. Dust cover; 5. Sprocket; 51. Driving gear teeth; 6. Driving chain;

[0024] 7. Fixed seat; 71. Support; 72. Vertical plate; 73. Positioning wire plate; 8. Tensioning bracket; 81. Tensioning wheel; 9. Protective cover. Specific embodiments

[0025] The present utility model will be further described below in conjunction with the drawings and specific embodiments.

[0026] As Figures 1 to 4 shown, a conveying device for sawing flat ingots includes a base 1 and a plurality of sawing roller tables 2 rotatably arranged on the base 1. The plurality of sawing roller tables 2 are arranged in sequence along the sawing direction of the flat ingot. Bearing housings 3 are provided on the shafts 21 at both ends of each sawing roller table 2. Each bearing housing 3 is fixedly connected to the base 1. Dust covers 4 are provided at the joints of the shafts 21 at both ends of each sawing roller table 2 and the bearing housings 3; the conveying device further includes a transmission assembly. The transmission assembly includes a plurality of sprockets 5 and driving chains 6. Each sprocket 5 is fixedly connected to the end of the shaft 24 of the sawing roller table 2. Two rows of driving gear teeth 51 are provided on each sprocket 5. Each driving chain 6 is sleeved on the driving gear teeth 51 on the same side of two adjacent sprockets 5.

[0027] The sprocket 5 (i.e., the driving gear teeth 51 on the sprocket 5) at one end of the sawing roller table 2 rotates, driving the driving chain 6 and the adjacent sprocket 5 (i.e., another sawing roller table 2) to rotate; through the transmission of a plurality of driving chains 6, the rotation of a plurality of sawing roller tables 2 is finally realized. The flat ingot is placed on a plurality of sawing roller tables 2, and after the plurality of sawing roller tables 2 rotate, the flat ingot is conveyed to the sawing equipment. Dust covers 4 are provided at the joints of the shafts 21 at both ends of each sawing roller table 2 and the bearing housings 3; by providing the dust covers 4, the aluminum powder generated by the sawing equipment cutting the flat ingot cannot enter the bearing housing 3, thereby increasing the service life of the bearing housing 3 and preventing the bearing housing 3 from being damaged.

[0028] The conveying device of this embodiment is driven by multiple sprockets 5 and a drive chain 6 to drive multiple sawing roller paths 2 to rotate. The sprockets 5 and the drive chain 6 are convenient for maintenance. At the same time, the dust cover 4 effectively prevents the aluminum powder generated by cutting the flat ingot from entering the bearing housing 3, effectively improving the service life of the bearing housing 3 and preventing the bearing housing 3 from being damaged.

[0029] As an implementable manner, a fixed seat 7 is fixedly connected to each of the bearing housings 3. The fixed seat 7 and the bearing housing 3 can be fixedly connected together by welding or locking (screws and nuts). A first threaded hole is provided on each of the fixed seats 7, and a plurality of second threaded holes are uniformly provided on the base 1. Each of the first threaded holes and the second threaded holes is fixedly connected by bolts and nuts. The bearing housing 3 of this embodiment is locked and fixed to the base 1 through the fixed seat 7.

[0030] As an implementable manner, the conveying device further includes a plurality of positioning wire plates 73. The plurality of positioning wire plates 73 are uniformly arranged on the base 1 and each positioning wire plate 73 is located on the side of the fixed seat 7. The positioning wire plates 73 of this embodiment can be fixed to the base 1 by welding or locking (screws and nuts). A third threaded hole is provided on each of the positioning wire plates 73, and a stud passing through the through hole is threadedly arranged on each of the third threaded holes. Each of the studs can abut against the fixed seat 7. The position of the stud on the positioning wire plate 73 can be adjusted. After the bearing housing 3 is locked and fixed to the base 1 through the fixed seat 7, the stud is threadedly connected to the positioning wire plate 73 through the third threaded hole and then abuts against the fixed seat 7. The stud can finely adjust the parallelism of the fixed seat 7 to further keep the fixed seat 7 stable, thereby enabling the multiple sawing roller paths 2 to be stable and parallel.

[0031] As an implementable manner, a support 71 is further fixedly connected to each of the fixed seats 7, and a vertical plate 72 is fixedly connected to each of the supports 71. The supports 71 and the vertical plates 72 of this embodiment can be fixed to the fixed seats 7 by locking (screws and nuts). A shaft hole is provided on each of the vertical plates 72. One end of the shaft 21 of each of the sawing roller paths 2 passes through the shaft hole and is fixedly connected to a connecting shaft 22. The shaft 21 at one end of the sawing roller path 2 of this embodiment can be fixedly connected to the connecting shaft 22 by welding. Each of the connecting shafts 22 is fixedly connected to the center of the sprocket 5. A roller sleeve 23 is provided between each of the connecting shafts 22 and the sprocket 5. The roller sleeve 23 further facilitates the connection between the connecting shaft 22 and the sprocket 5. The supports 71 and the vertical plates 72 support the bearing housing 3, the bearings inside the bearing housing 3, the roller sleeve 23 and the sprocket 5.

[0032] Furthermore, positioning sleeves are provided on both sides of each roller sleeve 23, and the positioning sleeves make the roller sleeve 23, the connecting shaft 22 and the sprocket 5 stably connected.

[0033] As an implementable mode, each of the sawing roller paths 2 has a structure with thicker ends and thinner middle, and the thicknesses at both ends of each sawing roller path 2 are the same. The sawing roller path 2 is designed with a structure of thicker ends and thinner middle, so that when conveying the flat ingot, the flat ingot remains parallel and always stays at the center of the sawing roller path 2, and the flat ingot is not prone to deviation.

[0034] As an implementable mode, the shafts 21 at both ends of each sawing roller path 2 are rotatably connected to the bearings in the bearing seats 3.

[0035] A end cover 24 and a first transparent cover 25 are respectively arranged on both sides of the bearing seat 3 and the shaft 21 at one end of the sawing roller path 2. Specifically, the shaft 21 at one end of the sawing roller path 2 passes through the first transparent cover 25 and the bearing of the bearing seat 3 and is fixedly connected to the end cover 24. Among them, a shaft 21 end baffle and a stop washer are arranged in the end cover 24. The end cover 24 protects the shaft 21 at one end of the sawing roller path 2, and the shaft 21 end baffle and the stop washer limit the rotation of the shaft 21 at one end of the sawing roller path 2.

[0036] Second transparent covers 26 are respectively arranged on both sides of the bearing seat 3 and the shaft 21 at the other end of the sawing roller path 2. The second transparent covers 26 protect the shaft 21 at the other end of the sawing roller path 2. The shaft 21 at the other end of the sawing roller path 2 passes through the second transparent cover 26 and is fixedly connected to the connecting shaft 22. That is to say, the shaft 24 at the other end of the sawing roller path 2 passes through the shaft hole and the second transparent cover 26 and is fixedly connected to the connecting shaft 22. The connecting shaft 22 is fixedly connected to the center of the sprocket 5. That is to say, the sprockets 5 are all fixedly connected to the shaft 21 at the other end of the sawing roller path 2. Among them, a spacing ring and a half ring are arranged between the shaft 21 at the other end of the sawing roller path 2 and the bearing of the bearing seat 3. The spacing ring and the half ring limit the rotation of the shaft 21 at the other end of the sawing roller path 2.

[0037] A plurality of the dust covers 4 are respectively arranged between the shaft 21 at one end of the sawing roller path 2 close to the first transparent cover 25 and the bearing seat 3 and between the shaft 21 at the other end of the sawing roller path 2 far from the second transparent cover 26 and the bearing seat 3. The dust covers 4 play a role in protecting the bearing seats 3.

[0038] As an implementable mode, the transmission assembly further includes a plurality of tensioning brackets 8 and tensioning wheels 81. The plurality of tensioning brackets 8 are uniformly arranged on the base 1, and each tensioning bracket 8 is located between two sawing roller paths 2. The height of the horizontal plane where the top of each tensioning bracket 8 is located is greater than the height of the upper horizontal plane of the transmission chain 6. That is to say, the height of the horizontal plane where the tensioning wheel teeth are located is greater than the height of the upper horizontal plane of the transmission chain 6. Each tensioning wheel 81 is rotatably arranged on the top of the tensioning bracket 8, and each tensioning wheel 81 is provided with tensioning wheel teeth. Each tensioning wheel tooth is engaged with the transmission chain 6. The tensioning wheel teeth are engaged with the transmission chain 6. That is to say, each transmission chain 6 is engaged with two transmission wheel teeth 51 on the same side of two adjacent sprockets 5 and one tensioning wheel tooth. The transmission chain 6 may become loose / slack due to its own weight or long-term rotation. The tensioning wheel teeth lift the transmission chain 6 and keep the transmission chain 6 in a tensioned state all the time, which is beneficial to the continuous rotation of the transmission chain 6.

[0039] As an implementable mode, the conveying device further includes a driving motor arranged on the base 1. The output shaft of the driving motor is fixedly connected to the driving shaft. The driving shaft is provided with driving wheel teeth. A plurality of sawing roller paths 2 are arranged in sequence along the sawing direction of the flat ingot. Two sawing roller paths 2 are located on the outermost side. The driving wheel teeth and the transmission wheel teeth 51 on one of the outermost sprockets 5 are sleeved with a transmission chain 6. When the driving motor is started, it drives the transmission wheel teeth 51 on one of the outermost sprockets 5 to rotate, and then drives another sprocket 5 close to this sprocket 5 to rotate. Through the transmission of a plurality of transmission chains 6, the rotation of a plurality of sawing roller paths 2 is finally realized.

[0040] As an implementable mode, the conveying device further includes a protective cover 9. The protective cover 9 covers a plurality of transmission chains 6. The protective cover 9 protects the transmission chain 6 and prevents the transmission chain 6 from being damaged. Specifically, after the base 1 is arranged on a working ground, the protective cover 9 can also be arranged on this working ground, and the transmission chain 6 is located below the protective cover 9. That is to say, the protective cover 9 covers the transmission chain 6. Among them, the base 1 can be fixed on the working ground by expansion screws. In this embodiment, the protective cover 9 is arranged on the base 1, and the transmission chain 6 is located below the protective cover 9.

[0041] The above embodiments are only the preferred embodiments of the present invention, which are only used to explain the present invention and do not limit the scope of implementation of the present invention. For those skilled in the art of this technology, of course, other implementation modes can be easily made through replacement or change according to the technical content disclosed in this specification. Therefore, all changes and improvements made in the principles and process conditions of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A conveying device for sawing flat ingots, comprising a base (1) and a plurality of sawing roller paths (2) rotatably arranged on the base (1), the plurality of sawing roller paths (2) being arranged in sequence along the sawing direction of the flat ingot, characterized in that, Bearings (3) are provided on the shafts (21) at both ends of each of the sawing roller paths (2), each of the bearings (3) is fixedly connected to the base (1), and dust covers (4) are provided at the joints between the shafts (21) at both ends of each of the sawing roller paths (2) and the bearings (3); the conveying device further includes a transmission assembly, the transmission assembly includes a plurality of sprockets (5) and transmission chains (6), the sprockets (5) are fixedly connected to the ends of the shafts (21) of the sawing roller paths (2), each of the sprockets (5) is provided with transmission teeth (51), and each of the transmission chains (6) is sleeved on the transmission teeth (51) on the same side of two adjacent sprockets (5).

2. The conveying device according to claim 1, wherein, A fixing seat (7) is fixedly connected to each of the bearings (3), a first threaded hole is provided on each of the fixing seats (7), a plurality of second threaded holes are uniformly provided on the base (1), and each of the first threaded holes and the second threaded holes are fixedly connected by bolts and nuts.

3. The conveying device according to claim 2, wherein The conveying device further includes a plurality of positioning wire plates (73), the plurality of positioning wire plates (73) are uniformly provided on the base (1) and each positioning wire plate (73) is located on the side of the fixing seat (7), a third threaded hole is provided on each of the positioning wire plates (73), a stud passing through the through hole is threadedly provided on each of the third threaded holes, and each of the studs can abut against the fixing seat (7).

4. The conveying device according to claim 2, characterized in that, A support (71) is further fixedly connected to each of the fixing seats (7), a vertical plate (72) is fixedly connected to each of the supports (71), a shaft hole is provided on each of the vertical plates (72), one end of the shaft (21) of each of the sawing roller paths (2) passes through the shaft hole and is fixedly connected to a connecting shaft (22), each of the connecting shafts (22) is fixedly connected to the center of the sprocket (5), and a roller sleeve (23) is provided between each of the connecting shafts (22) and the sprocket (5).

5. The conveying device according to claim 1, wherein Each of the sawing roller paths (2) has a structure that is thick at both ends and thin in the middle, and the thicknesses at both ends of each of the sawing roller paths (2) are the same.

6. The conveying device according to claim 1, characterized in that The shafts (21) at both ends of each of the sawing roller paths (2) are rotatably connected to the bearings in the bearings (3); a end cover (24) and a first transparent cover (25) are respectively provided on both sides of the shaft (21) at one end of the sawing roller path (2) and the bearing (3), a second transparent cover (26) is respectively provided on both sides of the shaft (21) at the other end of the sawing roller path (2) and the bearing (3), the shaft (21) at the other end of the sawing roller path (2) passes through the second transparent cover (26) and is fixedly connected to the connecting shaft (22), the connecting shaft (22) is fixedly connected to the center of the sprocket (5); a plurality of the dust covers (4) are respectively provided between the shaft (21) at one end of the sawing roller path (2) close to the first transparent cover (25) and the bearing (3) and between the shaft (21) at the other end of the sawing roller path (2) far from the second transparent cover (26) and the bearing (3).

7. The conveying device according to claim 1, characterized in that, The transmission assembly further includes a plurality of tensioning brackets (8) and tensioning wheels (81). The plurality of tensioning brackets (8) are evenly arranged on the base (1), and each tensioning bracket (8) is located between two sawing roller paths (2). The height of the horizontal plane where the top of each tensioning bracket (8) is located is greater than the height of the horizontal plane where the upper part of the transmission chain (6) is located. Each tensioning wheel (81) is rotatably arranged on the top of the tensioning bracket (8), and each tensioning wheel (81) is provided with tensioning wheel teeth, and each tensioning wheel tooth is engaged with the transmission chain (6).

8. The conveying device according to claim 1, characterized in that, The conveying device further includes a driving motor arranged on the base (1). The output shaft of the driving motor is fixedly connected to the driving shaft. The driving shaft is provided with driving wheel teeth, and a transmission chain (6) is sleeved on the driving wheel teeth and the transmission wheel teeth (51) on one of the outermost sprockets (5).

9. The conveying device according to claim 1, characterized in that, The conveying device further includes a protective cover (9), and the protective cover (9) covers the plurality of transmission chains (6).