Lifting chain conveyor

Abstract

The utility model relates to a lifting chain conveyor, belongs to the technical field of transfer equipment, including base, be equipped with lifting motor, lifting transmission shaft and lifting frame on the base, lifting motor drives lifting transmission shaft, and the both ends of lifting transmission shaft are equipped with lifting transmission assembly respectively, and lifting transmission assembly connects lifting frame through linkage block, be equipped with two respectively with linkage block corresponding follow -up chain on the lifting frame, and the one end of follow -up chain is close to linkage block is connected in the lower point of base, and the other end of follow -up chain is connected in the higher point of base, and the top of lifting frame is connected with transfer frame, and be equipped with conveying transmission assembly on the transfer frame, follow -up chain both ends are fixed respectively in the high, low point of base and keep tension, and follow -up sprocket no.

Description

Technical Field

[0001] This utility model belongs to the field of transfer equipment technology, specifically a lifting chain conveyor. Background Technology

[0002] In automated warehouses and intelligent logistics conveying systems, there is a common height difference between different workstations. Lifting conveying equipment is needed to achieve continuous transfer of materials between conveying lines at different heights. It is the core equipment in the logistics connection link, and its operational stability directly affects the operational efficiency and material transfer safety of the entire logistics line.

[0003] Currently, most widely used lifting and conveying equipment in the industry adopts a split structure combining a hydraulic lifting platform and a conveyor. Height switching is achieved by driving the entire conveying platform through a bottom hydraulic cylinder. This type of solution requires numerous auxiliary components such as an oil pump station, hydraulic pipelines, and control valve groups. The overall integration is low, on-site piping and wiring are cumbersome, and the installation and deployment cycle is long. After long-term operation, hydraulic systems are prone to problems such as seal aging and oil leakage, which not only pollute the workshop environment but also require regular inspection and replacement of cylinders, pipelines, and seals, resulting in high subsequent operation and maintenance costs and a large workload.

[0004] Meanwhile, hydraulically driven systems experience significant rigid impacts during start-up and shutdown, resulting in insufficient operational stability and making them unsuitable for high-frequency automated logistics lines. Many purely mechanical lifting solutions lack reliable dual-sided synchronous constraint structures; single-sided drive can easily lead to tilting and jamming of the lifting frame, causing materials to easily tip over and fall during transport, making it difficult to consistently guarantee operational stability and transport safety. Utility Model Content

[0005] To address the problems of complex structure, oil leakage, large maintenance workload, and large start-stop impact in existing hydraulic lifting and conveying equipment, as well as insufficient synchronous constraints and easy occurrence of frame tilting and jamming and material tipping and falling in pure mechanical lifting schemes, this utility model provides a lifting chain conveyor.

[0006] This utility model is achieved through the following technical solution: A lifting chain conveyor includes a base, on which a lifting motor, a lifting drive shaft and a lifting frame are provided; The lifting motor is connected to the lifting drive shaft through a transition transmission assembly. Lifting transmission assemblies are respectively provided at both ends of the lifting drive shaft. The lifting transmission assemblies are connected to the lifting frame through a linkage block. The lifting frame is equipped with two follower chains that correspond to the linkage block respectively. The end of the follower chain near the linkage block is connected to the lower point of the base, and the other end of the follower chain is connected to the higher point of the base. The follower chain is engaged with a follower sprocket one that is rotatably mounted on the lifting frame at one end near the linkage block. The follower sprocket one is in contact with the bottom edge of the follower chain. The follower chain is engaged with a follower sprocket two that is rotatably mounted on the lifting frame at the other end. The follower sprocket two is in contact with the top edge of the follower chain. The lifting frame rises and falls synchronously with the linkage block. At this time, the first follower sprocket and the second follower sprocket mesh and roll in the opposite direction along the follower chain. The top of the lifting frame is connected to a transfer frame, which is equipped with a conveying and transmission assembly for driving materials.

[0007] The lifting motor drives the lifting transmission shaft to rotate via the transition transmission assembly, which in turn drives the lifting transmission assemblies at both ends to operate synchronously. The lifting frame is pulled vertically by the linkage block to complete the lifting action. The two ends of the follower chain are fixed to the high and low points of the base and kept taut. Follower sprockets 1 and 2 on the lifting frame are engaged with the bottom and top edges of the follower chain, respectively. When the lifting frame is raised or lowered, the two sets of sprockets roll and climb along the follower chain, forming a double-sided closed-loop synchronous constraint to ensure that the two ends of the lifting frame are raised and lowered synchronously and maintain a horizontal posture throughout the process. The pure mechanical chain transmission has no risk of oil leakage, which can eliminate the need for oil circuit sealing and cylinder maintenance, and significantly reduce the later operation and maintenance costs and workload. There is no hydraulic rigid impact when lifting and stopping, and the height adjustment is stable and controllable, which can adapt to the needs of high-frequency automated logistics transportation. The double-sided closed-loop synchronous structure can effectively avoid the lifting frame from jamming or tilting on one side, eliminate the risk of material tipping over and falling, and greatly improve the stability of equipment operation and the safety of transportation.

[0008] A further improvement of this utility model is that each of the four corners of the base is provided with a column, and the end of the follower chain away from the linkage block is connected to the higher end of the column through a tensioning member. By setting the columns at the four corners of the base, a stable high-level installation reference is provided for the follower chain. With the help of the tensioning member, the tension of the follower chain can be flexibly adjusted to ensure that the follower chain is in a proper tension state throughout the entire process, avoiding chain loosening, tooth skipping, and transmission failure. This further enhances the reliability of the double-sided synchronous constraint. At the same time, the column structure also provides a vertical protective boundary for the lifting frame, improving the overall structural strength of the equipment.

[0009] A further improvement of this utility model is that the aforementioned transfer frame is equipped with a conveyor motor, a conveyor drive shaft, and a conveyor transmission assembly. The conveyor motor is connected to the conveyor drive shaft through a transition transmission assembly two. Two conveyor transmission assemblies are provided, and each assembly is linked to one end of the conveyor drive shaft. This structure, employing a single conveyor motor and conveyor drive shaft to drive the conveyor transmission assemblies on both sides synchronously, ensures that the operating speeds of the conveyor transmission units on both sides are completely consistent, preventing deviation and jamming during material transport. Simultaneously, the conveying power and lifting power are independent, allowing for separate control of the lifting and material conveying actions without interference. This facilitates flexible adjustment of the conveying cycle and lifting height according to on-site conditions, adapting to continuous transfer needs in various scenarios.

[0010] A further improvement of this utility model is that the above-mentioned conveying transmission assembly includes two conveying sprockets (three, four, and two conveying chains). Two conveying sprockets (four) are rotatably mounted on the transfer frame, and two conveying chains (two) are sleeved on the outside of the two conveying sprockets (four). Two conveying sprockets (three) are respectively located at both ends of the conveying drive shaft, and these two conveying sprockets (three) mesh with the conveying chains (two). This sprocket and chain conveying transmission structure provides accurate transmission ratios and stable, reliable operation, capable of handling the transfer of various materials such as cartons, bins, and pallets. The conveying sprockets (three) at both ends of the conveying drive shaft synchronously drive the conveying chains (two) on both sides, ensuring uniform force on both sides of the material and a smooth, non-deviation-prone conveying process. Furthermore, the chain conveying structure is wear-resistant and durable, suitable for high-frequency, long-cycle continuous operation.

[0011] A further improvement of this invention is that the aforementioned conveyor sprocket three engages with the top surface of the lower chain of conveyor chain two. Engaging the conveyor sprocket three with the top surface of the lower chain of conveyor chain two allows for natural tensioning using the weight of the conveyor chain two, reducing slack side jumps during conveying, improving transmission stability. Simultaneously, this engagement method facilitates a low-position arrangement of the drive shaft, optimizes the internal spatial layout of the transfer frame, reduces the overall height of the conveying unit, and adapts to installation conditions requiring low headroom.

[0012] A further improvement of this invention is that the aforementioned transfer frame is also equipped with a tensioning element that can contact the second conveyor chain. The tensioning element allows for flexible adjustment of the tension of the second conveyor chain, compensating for wear and elongation after long-term operation, preventing chain loosening and tooth skipping, ensuring continuous stability of the conveyor transmission, and allowing tension adjustment to be completed without disassembling the sprocket, reducing the difficulty of later maintenance operations and shortening equipment maintenance time.

[0013] A further improvement of this utility model is that the aforementioned transition transmission assembly two includes a first conveyor sprocket, a second conveyor sprocket, and a first conveyor chain. The first conveyor sprocket is located at the output end of the conveyor motor, the second conveyor sprocket is coaxially mounted on the conveyor drive shaft, and the conveyor chain is mounted on both the second and first conveyor sprockets. This sprocket and chain-type transition transmission structure offers high transmission efficiency and strong load-bearing capacity, stably transmitting the output torque of the conveyor motor. Furthermore, the conveying speed can be flexibly matched by adjusting the number of sprocket teeth, adapting to the conveying cycle requirements of different materials. The structure is simple and reliable, and subsequent maintenance and replacement are convenient, making it suitable for complex industrial operating environments.

[0014] A further improvement of this utility model is that the above-mentioned lifting transmission assembly includes two lifting sprockets and two lifting chains. Two lifting sprockets are provided, vertically arranged on the base, and the lifting chain is sleeved on the two lifting sprockets. The transmission structure using vertically arranged double lifting sprockets and lifting chains results in a clear transmission trajectory and smooth operation. It stably converts the rotational motion of the transmission shaft into the vertical linear motion of the lifting chain, ensuring uniform force distribution during the lifting process of the linkage block driving the lifting frame. The chain-type lifting transmission operates without impact during start-stop, providing higher height control precision. Simultaneously, the structure is wear-resistant and durable, suitable for large-stroke, high-frequency lifting operations.

[0015] A further improvement of this utility model is that the base is also provided with a tensioning component two, which is used to adjust the vertical movement of the upper lifting sprocket two. The tensioning component two allows for vertical adjustment of the position of the upper lifting sprocket two, thereby precisely adjusting the tension of the lifting chain two, compensating for wear and elongation of the chain after long-term use, preventing chain loosening and skipping, and ensuring the synchronization and stability of the lifting transmission. Furthermore, the vertical adjustment method is convenient to operate, allowing maintenance and adjustment to be completed without disassembling the overall transmission structure, thus improving later maintenance efficiency.

[0016] A further improvement of this utility model is that the aforementioned transition transmission assembly includes a first lifting sprocket, a third lifting sprocket, and a first lifting chain. The first lifting sprocket is located at the output end of the lifting motor, the third lifting sprocket is coaxially mounted on the lifting transmission shaft, and the lifting chain is mounted on the first and third lifting sprockets. This sprocket and chain-type lifting transition transmission structure can stably transmit the output torque of the lifting motor, ensuring no slippage during transmission, precise transmission ratio, and synchronous power output at both ends of the lifting transmission shaft. Furthermore, the lifting speed can be adjusted by matching sprockets with different tooth counts to adapt to the lifting cycle requirements of different drop conditions. The structure is simple and reliable, with a low failure rate, facilitating later inspection and maintenance.

[0017] As can be seen from the above technical solution, the beneficial effects of this utility model are: the lifting motor drives the lifting transmission shaft to rotate via the transition transmission assembly, which in turn drives the lifting transmission assemblies at both ends to operate synchronously. The lifting frame is then pulled vertically by the linkage block to complete the lifting action. The two ends of the follower chain are fixed to the high and low points of the base and kept taut. Follower sprockets one and two on the lifting frame mesh with the bottom and top edges of the follower chain, respectively. When the lifting frame rises and falls, the two sets of sprockets roll and climb along the follower chain, forming a double-sided closed-loop synchronous constraint, ensuring that the two ends of the lifting frame rise and fall synchronously and maintain a horizontal posture throughout the entire process. Adopting an integrated design of lifting and conveying mechanisms, it eliminates the need for auxiliary hydraulic components such as oil pump stations and hydraulic pipelines, resulting in a simple and compact overall layout and significantly shortening the on-site installation and commissioning cycle. The pure mechanical chain drive eliminates the risk of oil leakage, removing the need for oil circuit sealing and cylinder maintenance, thus significantly reducing subsequent operation and maintenance costs and workload. The lifting start and stop are free from hydraulic rigid impact, and the height adjustment is smooth and controllable, adapting to the needs of high-frequency automated logistics conveying. The double-sided closed-loop synchronous structure effectively avoids single-sided jamming and tilting of the lifting frame, eliminating the risk of material tipping over and falling, and greatly improving the stability of equipment operation and the safety of conveying. Attached Figure Description

[0018] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a first structural schematic diagram of a specific embodiment of the present utility model.

[0020] Figure 2 This is a second structural schematic diagram of a specific embodiment of the present utility model.

[0021] Figure 3 for Figure 2 A schematic diagram of the AA cross-section.

[0022] Figure 4 This is a third structural schematic diagram of a specific embodiment of the present utility model.

[0023] Figure 5 This is a schematic diagram of the conveying and transmission assembly according to a specific embodiment of the present invention.

[0024] Figure 6 This is a schematic diagram of the lifting transmission assembly according to a specific embodiment of the present utility model.

[0025] Figure 7 This is a schematic diagram of the following chain and two following sprockets in a specific embodiment of this utility model.

[0026] Figure 8 This is a schematic diagram of the lifting guide and positioning indicator of a specific embodiment of the present utility model.

[0027] In the attached diagram: 10. Base; 101. Column 1; 102. Lifting guide; 1021. Angle iron; 1022. Guide wheel; 103. Position indicator; 1031. Indicator plate; 1032. Photoelectric switch; 1033. Trigger plate; 1034. Guide groove; 104. Adjustable leveling foot; 20. Lifting frame; 201. Column 2; 30. Transfer frame; 310. Conveyor drive shaft; 311. Conveyor sprocket 3; 312. Conveyor sprocket 2; 313. Tensioner 1; 301. Conveyor... Conveyor motor; 3011, Conveyor sprocket one; 302, Conveyor chain one; 303, Conveyor chain two; 3031, Conveyor sprocket four; 40, Lifting motor; 410, Lifting drive shaft; 401, Lifting sprocket one; 402, Lifting chain one; 403, Lifting sprocket two; 4031, Linkage block; 404, Lifting chain two; 405, Lifting sprocket three; 406, Tensioning component two; 50, Follower chain; 501, Follower sprocket one; 502, Follower sprocket two; 503, Tensioning component three. Detailed Implementation

[0028] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0029] like Figures 1-8 As shown, this utility model discloses a lifting chain conveyor, which is applied to automated warehouses and intelligent logistics conveying systems to connect material conveying stations at different heights and realize continuous material transfer. The equipment adopts an integrated design of lifting mechanism and conveying mechanism, and mainly consists of base 10, lifting drive assembly, lifting frame 20, double-sided follow-up synchronization assembly and conveying unit.

[0030] The base 10 is a rectangular support base for the entire machine, with adjustable leveling feet 104 at the bottom for leveling during on-site installation. Columns 101 are vertically fixed at each of the four corners of the base 10, forming the vertical support frame of the equipment. The lifting drive assembly is mounted on the base 10 and includes a lifting motor 40, a lifting drive shaft 410, a transition transmission assembly, and two symmetrically arranged lifting transmission assemblies. The lifting motor 40 is fixedly mounted on one side of the base 10, and its output power is transmitted to the lifting drive shaft 410 via the transition transmission assembly. The transition transmission assembly consists of a lifting sprocket 401, a lifting sprocket 405, and a lifting chain 402. The lifting sprocket 401 is coaxially mounted on the output shaft of the lifting motor 40, the lifting sprocket 405 is coaxially mounted on the shaft of the lifting drive shaft 410, and the lifting chain 402 is sleeved on the outside of the two sprockets to achieve speed reduction and power transmission. The lifting drive shaft 410 is horizontally mounted on the upper part of the base 10, with its two ends extending into the inner sides of the two side columns 101, and each is equipped with a corresponding lifting drive assembly. Each lifting drive assembly includes two vertically arranged lifting sprockets 403 and a lifting chain 404 sleeved on the outside of the two sprockets; the lower lifting sprocket 403 is coaxially fixed to the end of the lifting drive shaft 410, and the upper lifting sprocket 403 is vertically adjustable and mounted on the upper part of the column 101. A tensioning element 406 is provided on the base 10 corresponding to the upper lifting sprocket 403. By driving the upper lifting sprocket 403 vertically through the tensioning element 406, the tension of the lifting chain 404 can be precisely adjusted to compensate for the elongation caused by long-term chain wear and avoid tooth skipping and loosening. The lifting chain 404 is fixedly connected to a linkage block 4031. The linkage block 4031 is rigidly connected to the side of the lifting frame 20. When the lifting chain 404 moves vertically, the lifting frame 20 is pulled up and down vertically by the linkage block 4031.

[0031] The lifting drive shaft 410 is parallel to one side of the base 10 and is located below that side.

[0032] The centerlines of both follower sprocket 1 501 and follower sprocket 2 502 are in the same horizontal plane.

[0033] The dual-sided follow-up synchronization components are symmetrically arranged on both sides of the equipment to constrain the operating posture of the lifting frame 20 and ensure lifting synchronization. Each set of follow-up synchronization components includes a follow-up chain 50, a follow-up sprocket 1 501, and a follow-up sprocket 2 502. The lower end of the follow-up chain 50 is fixedly connected to the low mounting point of the base 10, and the upper end is connected to the top mounting position of the column 101 through the tensioning member 3 503, so that the follow-up chain 50 is in a taut state throughout the entire process; the tensioning member 3 503 can finely adjust the tension of the follow-up chain 50 to ensure the reliability of the meshing transmission. Both the follow-up sprocket 1 501 and the follow-up sprocket 2 502 are rotatably mounted on the side of the lifting frame 20 through a rotating shaft, wherein the follow-up sprocket 1 501 meshes and abuts against the bottom edge of the follow-up chain 50, and the follow-up sprocket 2 502 meshes and abuts against the top edge of the follow-up chain 50. When the lifting frame 20 rises, the first follower sprocket 501 rolls counterclockwise along the bottom edge of the follower chain 50, and the second follower sprocket 502 rolls clockwise along the top edge of the follower chain 50. When the lifting frame 20 descends, the two sprockets roll in opposite directions. Through the meshing constraint between the chains and sprockets on both sides, the lifting frame 20 is forced to rise and fall synchronously at both ends, maintaining a horizontal posture throughout the process, effectively avoiding problems such as jamming on one side, tilting of the frame, and material tipping and falling.

[0034] Among them, the two columns 101 of the three tensioning components 503 are respectively set opposite to the two columns 101 of the two tensioning components 406.

[0035] The conveying unit is fixedly installed on the top of the lifting frame 20 via the transfer frame 30, and is used to realize the lateral conveying and docking of materials. The conveying unit includes a conveying motor 301, a conveying drive shaft 310, a second transition drive assembly, and two sets of symmetrical conveying drive assemblies. The conveying motor 301 is fixed to the side of the transfer frame 30, and its output power is transmitted to the conveying drive shaft 310 via the second transition drive assembly. The second transition drive assembly consists of a first conveying sprocket 3011, a second conveying sprocket 312, and a first conveying chain 302. The first conveying sprocket 3011 is coaxially mounted on the output shaft of the conveying motor 301, the second conveying sprocket 312 is coaxially mounted on the shaft of the conveying drive shaft 310, and the first conveying chain 302 is sleeved on the outside of the first conveying sprocket 3011 and the second conveying sprocket 312 to realize transmission. The conveying drive shaft 310 is horizontally mounted on the transfer frame 30, with a set of conveying drive assemblies corresponding to each end. Each conveyor drive assembly includes a third conveyor sprocket 311, a fourth conveyor sprocket 3031, and a second conveyor chain 303. The third conveyor sprocket 311 is installed at both ends of the conveyor drive shaft 310. Two fourth conveyor sprockets 3031 are rotatably mounted at the front and rear ends of the transfer frame 30, respectively. The second conveyor chain 303 is sleeved on the outside of the two fourth conveyor sprockets 3031 to form a conveying loop. The third conveyor sprocket 311 meshes with and abuts against the top surface of the lower chain of the second conveyor chain 303, achieving auxiliary tensioning by utilizing the chain's own weight, reducing slack side jumps during conveying, and facilitating a low-position arrangement of the drive shaft, thus reducing the overall height of the conveying unit. The transfer frame 30 is also equipped with a tensioning element 313, which cooperates with the second conveyor chain 303 to flexibly adjust the tension of the conveyor chain, ensuring long-term transmission stability.

[0036] The running direction of the second conveyor chain 303 is perpendicular to the arrangement direction of the follower chain 50 in the vertical plane.

[0037] The transfer frame 30 is installed on the lifting frame 20 via the second column 201.

[0038] It also includes a lifting guide 102 and a positioning indicator 103; the lifting guide 102 includes angle iron 1021 and guide wheels 1022. There are two angle irons 1021, which are vertically mounted on two columns 101 for mounting tensioning components 3 503, and the two angle irons 1021 are arranged opposite to each other; there are two guide wheels 1022, which roll along the angle iron 1021, and both guide wheels 1022 are connected to the lifting frame 20.

[0039] The positioning indicator 103 includes an indicator plate 1031, photoelectric switches 1032, and a trigger plate 1033. The indicator plate 1031 is vertically mounted on a base 10 between two angle irons 1021. A vertical guide groove 1034 is formed on the indicator plate 1031, and two photoelectric switches 1032 are located at both ends of the guide groove 1034. The trigger plate 1033 is mounted on the lifting frame 20 and can move up and down with the lifting frame 20. During movement, it engages with the two photoelectric switches 1032 to sense the lifting height of the lifting frame 20. When the photoelectric switches 1032 are triggered, the lifting motor 40 can be started and stopped.

[0040] Since the linkage block 4031 and the lifting guide 102 are located at both ends of one side of the lifting frame 20, they can effectively counteract the deflection torque caused by the single-sided drive, reduce the degree of tilting of the lifting frame 20 and the risk of material slippage caused by the tilt. In other words, the lifting frame 20 can better maintain its operational stability under the constraint and assistance of the lifting guide 102.

[0041] The operation of this equipment is as follows: When performing the lifting action, the lifting motor 40 starts, and the output torque is transmitted to the lifting drive shaft 410 through the transition transmission component one, driving the lifting transmission components at both ends to operate synchronously. The lifting chain two 404 pulls the lifting frame 20 to move smoothly up and down vertically through the linkage block 4031. During the lifting process, the sprockets of the follower synchronization components on both sides roll synchronously along the follower chain 50, forming a closed-loop constraint to ensure that the lifting frame 20 is horizontal throughout the entire process, with no hydraulic rigid impact during start-up and shutdown, and the height adjustment accuracy is controllable. When performing material conveying, the conveying motor 301 starts, and the power is transmitted to the conveying drive shaft 310 through the transition transmission component two, driving the conveying chains two 303 on both sides to operate synchronously, realizing the lateral conveying of materials and docking with upstream and downstream equipment. The lifting action and the conveying action are independent of each other and can be controlled separately or linked together according to the production line rhythm.

[0042] In practical engineering applications, for conveying operations with large drops, the height of the upright column 101 can be increased, and the lifting chain and follower chain 50 can be lengthened simultaneously. A vertical guide structure can also be added to improve the operational stability of large-stroke lifting. For different industries and material types, the conveying units on the transfer frame 30 can be replaced with various forms such as roller conveyors, belt conveyors, and double-speed chain conveyors to adapt to different conveying needs. The equipment can be equipped with a PLC control system, with reserved linkage interfaces, to link with automated warehouse stacker cranes, AGVs, upstream and downstream conveyors, etc., automatically completing the entire automated operation of height switching, arrival detection, and material transfer.

[0043] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A lifting chain conveyor, comprising a base (10), characterized in that, The base (10) is equipped with a lifting motor (40), a lifting transmission shaft (410) and a lifting frame (20). The lifting motor (40) is connected to the lifting drive shaft (410) through a transition transmission assembly. The two ends of the lifting drive shaft (410) are respectively provided with lifting transmission assemblies. The lifting transmission assemblies are connected to the lifting frame (20) through a linkage block (4031). The lifting frame (20) is provided with two follower chains (50) respectively corresponding to the linkage block (4031). One end of the follower chain (50) near the linkage block (4031) is connected to the lower point of the base (10), and the other end of the follower chain (50) is connected to the higher point of the base (10). The follower chain (50) has a follower sprocket (501) rotatably mounted on the lifting frame (20) at one end near the linkage block (4031). The follower sprocket (501) contacts the bottom edge of the follower chain (50). The other end of the follower chain (50) has a follower sprocket (502) rotatably mounted on the lifting frame (20). The follower sprocket (502) contacts the top edge of the follower chain (50). The lifting frame (20) rises and falls synchronously with the linkage block (4031). At this time, the first follower sprocket (501) and the second follower sprocket (502) mesh and roll in the opposite direction along the follower chain (50). The top of the lifting frame (20) is connected to a transfer frame (30), which is equipped with a conveying transmission component for driving materials.

2. The lifting chain conveyor according to claim 1, characterized in that, The base (10) has four columns (101) at its four corners. The end of the follower chain (50) away from the linkage block (4031) is connected to the higher end of the column (101) through the tensioning member (503).

3. A lifting chain conveyor according to claim 1 or 2, characterized in that, The transfer frame (30) is equipped with a conveyor motor (301), a conveyor drive shaft (310) and a conveyor drive assembly; the conveyor motor (301) is connected to the conveyor drive shaft (310) through a transition drive assembly two; there are two conveyor drive assemblies, and the two conveyor drive assemblies are respectively linked to the two ends of the conveyor drive shaft (310).

4. A lifting chain conveyor according to claim 3, characterized in that, The conveying transmission assembly includes a third conveyor sprocket (311), a fourth conveyor sprocket (3031), and a second conveyor chain (303). There are two fourth conveyor sprockets (3031), and the two fourth conveyor sprockets (3031) are rotatably mounted on the transfer frame (30). The second conveyor chain (303) is sleeved on the outside of the two fourth conveyor sprockets (3031). There are two third conveyor sprockets (311), and the two third conveyor sprockets (311) are respectively located at the two ends of the conveying transmission shaft (310), and the third conveyor sprocket (311) meshes with the second conveyor chain (303).

5. A lifting chain conveyor according to claim 4, characterized in that, The conveyor sprocket three (311) meshes with the top surface of the lower chain of the conveyor chain two (303).

6. A lifting chain conveyor according to claim 5, characterized in that, The transfer frame (30) is also provided with a tensioning element (313) that can contact the second conveyor chain (303).

7. A lifting chain conveyor according to claim 3, characterized in that, The second transition transmission assembly includes a first conveyor sprocket (3011), a second conveyor sprocket (312), and a first conveyor chain (302). The first conveyor sprocket (3011) is located at the output end of the conveyor motor (301). The second conveyor sprocket (312) is coaxially located on the conveyor drive shaft (310). The first conveyor chain (302) is sleeved on the second conveyor sprocket (312) and the first conveyor sprocket (3011).

8. A lifting chain conveyor according to claim 1 or 2, characterized in that, The lifting transmission assembly includes a second lifting sprocket (403) and a second lifting chain (404). There are two second lifting sprockets (403), which are vertically arranged on the base (10). The second lifting chain (404) is sleeved on the two second lifting sprockets (403).

9. A lifting chain conveyor according to claim 8, characterized in that, The base (10) is also provided with a tensioning member two (406), which is used to adjust the vertical movement of the lifting sprocket two (403) located above.

10. A lifting chain conveyor according to claim 8, characterized in that, The transition transmission assembly includes a lifting sprocket (401), a lifting sprocket (405), and a lifting chain (402). The lifting sprocket (401) is located at the output end of the lifting motor (40). The lifting sprocket (405) is coaxially located on the lifting transmission shaft (410). The lifting chain (402) is sleeved on the lifting sprocket (401) and the lifting sprocket (405).

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