Chain wheel type speed reduction lifting device for medicine conveying

Abstract

The invention relates to the technical field of medicine conveying, in particular to a chain wheel type speed reduction lifting device for medicine conveying. The device comprises a device body, a lifting mechanism composed of a chain wheel piece and a chain is installed on a frame body, an objective table used for bearing a material box is arranged on the chain, a connection structure is arranged between the output end of a conveying belt and the device body, and the connection structure comprises a fixed lower plate and a movable upper plate movably installed above the fixed lower plate. A trigger reset assembly is arranged in the fixed lower plate. According to the invention, when the objective table moves to a connection position along with the chain wheel, a trigger wedge block in the trigger reset assembly is extruded, the trigger wedge block is forced to move towards the conveying belt along the guide rod, the movable upper plate is driven to be attached to the fixed lower plate, and a continuous transition ramp is formed between the conveying belt and the objective bin; the height difference and plane dislocation between the conveying belt and the objective table are effectively reduced, and the phenomenon of material box bumping caused by uneven butt joint is reduced.

Description

Technical Field

[0001] This invention relates to the field of pharmaceutical delivery technology, and more specifically, to a sprocket-type speed reduction and lifting device for pharmaceutical delivery. Background Technology

[0002] In the production, storage and distribution of pharmaceuticals, pharmaceutical transportation is one of the core links to ensure production continuity and improve circulation efficiency. From raw material processing and semi-finished product transfer to finished product storage, pharmaceuticals need to be transferred between different processes or areas through transportation equipment. Among them, some pharmaceuticals (such as liquid reagents, biological agents, glass bottled pharmaceuticals, etc.) are often loaded in fragile containers or open boxes. In existing pharmaceutical transport systems, for the transfer of pharmaceuticals between different height areas (such as from the ground to storage shelves, or from low-level production processes to high-level processing equipment), sprocket-driven lifting devices are commonly used to achieve vertical or inclined lifting and transport. Furthermore, in order to adapt to the needs of large-scale and continuous pharmaceutical production, existing lifting devices mostly adopt a circulating sprocket structure design, that is, multiple lifting frames are driven by a closed-loop chain to circulate, which greatly improves the efficiency of pharmaceutical transfer between different height levels. However, when the circulating sprocket structure drives the lifting frame, the lifting frame needs to complete a complex motion, including cyclic rotation and linear lifting, along with the chain. When the container or open box containing medicine is output from the conveyor belt and enters the lifting frame, the height difference or planar misalignment between the lifting frame and the conveyor belt, due to the continuous movement of the lifting frame, causes uneven support force on the bottom of the box. Under inertia, the box sways, resulting in obvious bumping. This bumping not only impacts the medicine in the open box, causing liquid reagents to spill and powdered medicines to fly, but may also cause fragile containers to collide with the edge of the lifting frame, resulting in container breakage. Therefore, there is an urgent need for a sprocket-type speed reduction lifting device for medicine transportation to solve the above problems. Summary of the Invention

[0003] This invention provides a sprocket-type speed reduction and lifting device for drug transport. Through the coordinated operation of the connecting structure and the trigger reset component, it enables the automatic opening and closing of the anti-fall step and a smooth transition during the docking process between the conveyor belt and the loading platform. In sprocket-driven drug lifting and conveying scenarios, the hopper containing the drugs is safely and orderly transferred from the conveyor belt to the loading platform, ensuring the stability and safety of the entire drug transport process. This solves the problems mentioned in the background art, namely: The continuous movement of the circulating sprocket lifting frame and the conveyor belt can easily cause misalignment, resulting in the containers carrying medicines shaking and thus damaging the medicines.

[0004] To achieve the above objectives, the sprocket-type speed reduction and lifting device includes a device body, which is provided with a frame. A lifting mechanism consisting of sprockets and chains is installed on the frame. A loading platform for carrying a material box is provided on the chain, and a loading compartment is formed inside the loading platform. A conveyor belt for inputting material boxes is provided on one side of the frame. The output end of the conveyor belt is adjacent to the movement path of the lifting mechanism. A connecting structure is provided between the output end of the conveyor belt and the device body. The connecting structure includes a fixed lower plate and a movable upper plate that is movably installed above the fixed lower plate. The fixed lower plate is equipped with a trigger reset component. When the trigger reset component is in its natural state, it can lift the movable upper plate, creating a gap between the movable upper plate and the fixed lower plate. At this time, a fall-prevention step is formed between the connecting structure and the conveyor belt. When the platform moves to the docking position and presses against the trigger reset component, the trigger reset component deforms under force, and the movable upper plate slides down along the surface of the trigger reset component, so that the movable upper plate fits against the fixed lower plate, thereby forming a continuous transition ramp between the conveyor belt and the cargo compartment.

[0005] In the above technical solution, the linkage between the connecting structure and the trigger reset component enables the automatic switching between anti-fall protection and smooth docking between the conveyor belt and the dynamically circulating platform. This not only ensures the safety and stability of drug delivery, but also improves the automation level, operational reliability and scenario adaptability of the delivery system.

[0006] Based on this, the trigger reset assembly includes a groove formed on the fixed lower plate, a trigger wedge is slidably disposed inside the groove, the trigger wedge is connected to the groove through a guide rod, and an elastic element is connected between the trigger wedge and the inner wall of the groove, the elastic element being sleeved on the surface of the guide rod.

[0007] The guide rod guides and limits the sliding movement of the trigger wedge, which, in conjunction with the elastic reset function of the elastic element, ensures the precise movement and stable reset of the trigger wedge. This, in turn, ensures the reliable operation of the linkage between the connecting structure and the trigger reset assembly, making the opening and closing of the anti-fall step smooth and providing structural protection for the safe and orderly transfer of the medicine-loaded bins.

[0008] In another technical solution, a force-bearing part is fixedly installed on the side of the movable upper plate away from the conveyor belt, and the bottom of the force-bearing part is supported on surface a.

[0009] The bottom of the force-bearing part has an inner cavity, and a pulley is rotatably installed inside the inner cavity, with the bottom of the pulley attached to surface a.

[0010] In this technical solution, by setting a pulley structure at the bottom of the force-bearing part that fits the surface a of the trigger wedge, the sliding friction between the force-bearing part and the surface a is converted into rolling friction, reducing the resistance when the two move relative to each other. This makes the lifting and lowering process of the movable upper plate more smooth and stable as the trigger wedge moves, further ensuring the stability and safety of the entire drug delivery process.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In the chain-driven speed reduction and lifting device for drug conveying, under normal conditions, the elastic element is in a normal state and pushes the trapezoidal trigger wedge to extend out of the fixed lower plate. The inclined upper surface of the trigger wedge will push up the force-bearing part of the movable upper plate, so that a gap is formed between the movable upper plate and the fixed lower plate, thereby forming an anti-fall step at the output end of the conveyor belt. This can prevent the material box from being output prematurely before the loading platform reaches the docking position, reducing problems such as misalignment, falling, and collision caused by premature conveying of the material box.

[0012] 2. In this sprocket-type speed reduction and lifting device for drug conveying, when the platform moves to the docking position with the sprocket, it will squeeze the trigger wedge in the trigger reset assembly, forcing the trigger wedge to move along the guide rod towards the conveyor belt. Because the upper surface of the trigger wedge is inclined, the force-bearing part of the movable upper plate will slide down along its inclined upper surface with its own weight as the trigger wedge moves, causing the movable upper plate to fit with the fixed lower plate, making the original anti-fall step disappear, and thus forming a continuous transition ramp between the conveyor belt and the cargo bin. This effectively reduces the height difference and planar misalignment between the conveyor belt and the platform, ensuring that the material bin can be smoothly transferred into the platform, reducing the material bin shaking caused by misalignment, and ensuring the safety and stability of the drug conveying process. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the sprocket component in this invention; Figure 3 This is a schematic diagram of the material bin waiting to be stored in the warehouse in this invention; Figure 4 This is a schematic diagram of the trigger reset component in this invention; Figure 5 This is a diagram showing the contact state between the stage and the trigger wedge in this invention; Figure 6 This is the first startup state of the trigger reset component in this invention; Figure 7 This is the second startup state of the trigger reset component in this invention; Figure 8 This is a schematic diagram of the force-bearing part in this invention; Figure 9 For the present invention Figure 8A schematic diagram of the structure at point A.

[0014] The meanings of the labels in the diagram are as follows: 1. Device body; 11. Frame; 12. Sprocket assembly; 13. Chain; 14. Platform; 15. Storage bin; 16. Conveyor belt; 17. Material bin; 2. Connecting structure; 20. Trigger reset assembly; 21. Fixed lower plate; 22. Movable upper plate; 23. Trigger wedge; 24. Guide rod; 25. Elastic element; 211. Shaft; 221. Force-bearing part; 222. Coating; 3. Installation structure; 31. Side frame; 32. Connecting parts; 41. Alignment strip; 42. Alignment groove; 43. Pulley. Detailed Implementation

[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] In the existing technology, the circulating sprocket drives the lifting frame to make compound continuous motion. The height difference or plane misalignment is easy to occur at the docking point between the lifting frame and the conveyor belt. When the container or open box loaded with medicine enters the lifting frame from the conveyor belt, the bottom is subjected to uneven support force. The inertial shaking causes bumps, which not only causes liquid reagents to spill and powder to fly, but may also cause fragile containers to collide and break with the lifting frame. In view of this, the present invention provides a sprocket-type speed reduction and lifting device for drug delivery, see below. Figures 1-9 As shown, the device includes a main body 1, which includes a frame 11. A lifting mechanism consisting of a sprocket 12 and a chain 13 is installed on the frame 11. A platform 14 for carrying a material box 17 is provided on the chain 13. A storage compartment 15 is formed inside the platform 14. A conveyor belt 16 for conveying the material box 17 is provided on one side of the frame 11. The output end of the conveyor belt 16 is adjacent to the movement path of the lifting mechanism. A connecting structure 2 is provided between the output end of the conveyor belt 16 and the device body 1. The connecting structure 2 includes a fixed lower plate 21 and a movable upper plate 22 movably installed above the fixed lower plate 21. A trigger reset component 20 is provided inside the fixed lower plate 21. When the trigger reset component 20 is in its natural state, the trigger reset component 20 can lift the movable upper plate 22. At this time, a fall prevention step is formed between the connecting structure 2 and the conveyor belt 16, which can prevent the material box 17 from being conveyed prematurely. When the platform 14 moves to the docking position and presses against the trigger reset component 20, the trigger reset component 20 deforms under force, and the movable upper plate 22 slides down along the surface of the trigger reset component 20, so that the movable upper plate 22 fits against the fixed lower plate 21, thereby forming a continuous transition ramp between the conveyor belt 16 and the cargo bin 15. This can reduce the height difference and misalignment problem between the conveyor belt 16 and the platform 14. Through the linkage between the docking structure 2 and the trigger reset component 20, the automatic opening and closing of the anti-fall step and the smooth transition are achieved between the conveyor belt 16 and the platform 14 during the docking process. In the scenario of chain-driven drug lifting and conveying, the material bin 17 for loading drugs is safely and orderly transferred from the conveyor belt 16 to the platform 14, ensuring the stability and safety of the entire drug conveying process.

[0017] The aforementioned sprocket-type speed reduction and lifting device operates on the principle well-known to those skilled in the art. It utilizes chain drive as its core, with an initial motor providing power to rotate the sprocket. The sprocket, through the meshing of its teeth with the chain 13, drives the chain 13 in a cyclical motion. The evenly mounted platform 14 and other actuators on the chain 13 move with the chain 13, loading material in the feeding area at the bottom of the device. The material is then lifted upwards along the guide rail with the chain 13. When it reaches the unloading position, the material is unloaded manually or mechanically, completing one lifting cycle. Simultaneously, a tensioning device continuously adjusts the tension of the chain 13 to ensure smooth transmission and continuous operation.

[0018] Furthermore, the deceleration function of the aforementioned circulating sprocket structure is achieved by a separate reduction gear assembly. This reduction gear assembly is a core reduction unit independent of the sprocket and chain 13 transmission mechanism. The high-speed rotational power output by the motor is first transmitted to the shaft of the reduction gear assembly. Through the meshing gear pairs inside the assembly, the transmission ratio generated by the difference in the number of gear teeth is used to reduce the speed and amplify the torque. The reduced-speed power is transmitted from the output shaft of the reduction gear assembly to the sprocket of the circulating sprocket structure, driving the drive sprocket to rotate smoothly, thereby driving the chain 13 and subsequent actuators to complete the cyclic lifting operation. The separate reduction gear assembly can precisely control the sprocket speed, avoiding instability in the lifting process due to excessive motor speed. At the same time, the rolling contact of the gear meshing reduces wear and improves transmission efficiency and load capacity.

[0019] The connecting structure 2 is assembled between the conveyor belt 16 and the device body 1 via the mounting structure 3. Specifically, the mounting structure 3 consists of two side frames 31 and two connectors 32. The side frames 31 are fixedly installed on the side end of the frame 11. One end of the connector 32 is assembled and connected to the surface of the side frame 31, and the other end is respectively connected to the two sides of the fixed lower plate 21 of the connecting structure 2. Through this assembly method, the connecting structure 2 is fixedly installed on the frame 11 and is located at the preset connecting position between the output end of the conveyor belt 16 and the device body 1, thereby fixing the relative position of the connecting structure 2 with the frame 11, the conveyor belt 16 and the movement path of the lifting mechanism.

[0020] The trigger reset assembly 20 is mounted on the groove on the fixed lower plate 21. The trigger wedge 23 is slidably disposed in the groove and assembled with the groove through the guide rod 24. The elastic element 25 (such as a spiral spring) is sleeved on the surface of the guide rod 24 and its two ends are respectively connected to the trigger wedge 23 and the inner wall of the groove, forming a reciprocating sliding structure of the trigger wedge 23. Specifically, the trigger wedge 23 has a trapezoidal cross-section with inclined upper and lower sides. The upper inclined surface is surface a, and the lower inclined surface is surface b. The upper inclined surface (surface a) receives the force-bearing part 221 of the movable upper plate 22 away from the conveyor belt 16. The bottom of the movable upper plate 22 is slidably connected to the fixed lower plate 21 through the shaft 211. An extension block with rounded corners is fixed on the side of the movable upper plate 22 and the extension block. Both the surface of the movable upper plate 22 and the extension block are covered with a smooth coating 222 (the coating 222 can be made of polytetrafluoroethylene). The above structure together constitutes the adaptive linkage basis of the connecting structure 2 and the trigger reset assembly 20, so that the sliding of the trigger wedge 23 can be transmitted to the movable upper plate 22 through the contact between the force-bearing part 221 and the surface a, driving the movable upper plate 22 to rise and fall along the shaft 211. At the same time, the extension block and the coating 222 cooperate to complete the connection and transition between the movable upper plate 22 and the conveyor belt 16. When the trigger wedge 23 is pressed by the platform 14 and slides into the groove along the guide rod 24, the lower inclined surface (b surface) provides bottom support and auxiliary guidance for the reciprocating motion of the trigger wedge 23, ensuring that its motion trajectory is smooth.

[0021] Among them, the guide rod 24 limits the trigger wedge 23 to slide only along the direction close to or away from the conveyor belt 16, the elastic element 25 realizes the automatic reset of the trigger wedge 23, ensuring the accuracy of the triggering and resetting actions, the trapezoidal trigger wedge 23 converts the horizontal sliding into the vertical lifting of the movable upper plate 22 through surface a, the shaft 211 limits the movement trajectory of the movable upper plate 22 to avoid deviation or torsion; the extension block extends the connection length to eliminate gaps, the rounded corner structure reduces the contact resistance of the material box 17, and the smooth coating 222 reduces the coefficient of friction between the material box 17 and the structure; During the lifting process of the platform 14 with the sprocket mechanism, in the initial state, the elastic element 25 in the trigger reset assembly 20 is in a naturally extended state, pushing the trigger wedge 23 to extend out of the groove of the fixed lower plate 21 along the guide rod 24. The inclined upper surface (a surface) of the trigger wedge 23 pushes up the force-bearing part 221 of the movable upper plate 22, so that the movable upper plate 22 and the fixed lower plate 21 form a gap, thereby forming an anti-fall step at the output end of the conveyor belt 16. When the platform 14 moves to the docking position, its side end contacts the trigger wedge 23 and generates a squeezing force, forcing the trigger wedge 23 to overcome the elastic force of the elastic element 25 and slide along the guide rod 24 into the groove. As the trigger wedge 23 slides horizontally, the contact position between its a surface and the force-bearing part 221 of the movable upper plate 22 changes synchronously. The movable upper plate 22 slides down along its a surface under its own gravity, and at the same time moves closer to and fits against the fixed lower plate 21 along the shaft rod 211. The anti-fall step disappears, and a continuous transition ramp is formed between the conveyor belt 16 and the loading compartment 15 of the platform 14. After the material box 17 is transferred from the conveyor belt 16 to the cargo bin 15 via the transition ramp, the cargo platform 14 continues to rise with the sprocket mechanism. The squeezing force on the trigger wedge 23 disappears, the elastic element 25 returns to its natural state and pushes the trigger wedge 23 to reset and extend along the guide rod 24, and pushes the movable upper plate 22 again to restore the anti-fall step state, completing one contact linkage cycle.

[0022] Considering the sliding stability of the movable upper plate 22, the alignment strip 41 is fixedly installed on the side wall of the force-bearing part 221, and the alignment groove 42 is opened on the surface of the fixed lower plate 21. The positions of the alignment strip 41 and the alignment groove 42 are corresponding. When the movable upper plate 22 is lifted under the action of the trigger reset component 20, the alignment strip 41 is embedded in the alignment groove 42 and slides along the extension direction of the groove, forming a sliding fit relationship between the alignment strip 41 and the alignment groove 42. This fit relationship occurs synchronously with the lifting and lowering movement of the movable upper plate 22. The sliding fit between the alignment strip 41 and the alignment groove 42 limits the lifting and lowering trajectory of the movable upper plate 22, preventing horizontal deviation or torsion during the lifting or lowering of the movable upper plate 22, ensuring that the force-bearing part 221 always maintains a preset contact posture with the a-surface of the trigger wedge 23, and maintaining the relative positional accuracy between the movable upper plate 22 and the fixed lower plate 21.

[0023] The bottom of the force-bearing part 221 has an inner cavity, and the pulley 43 is installed inside the inner cavity by a rotatable connection. The bottom of the pulley 43 is in contact with the a-side of the trigger wedge 23. When the trigger wedge 23 slides along the guide rod 24, the pulley 43 rotates synchronously with the displacement of the a-side, forming a rolling contact fit between the pulley 43 and the a-side.

[0024] The rolling contact between pulley 43 and surface a converts the sliding friction between the force-bearing part 221 and surface a into rolling friction, reducing the resistance when the two move relative to each other, reducing the jamming phenomenon caused by sliding between the force-bearing part 221 and surface a, and providing structural support for the smooth docking of the conveyor belt 16 and the platform 14.

[0025] Working principle: First, the connecting structure 2 is assembled between the conveyor belt 16 and the device body 1 through the mounting structure 3. Specifically, the two side frames 31 of the mounting structure 3 are fixed to the side of the frame 11. Then, the side frames 31 are connected to the two sides of the fixed lower plate 21 of the connecting structure 2 through two connectors 32, so that the connecting structure 2 is fixed in the preset connecting position, ensuring that its relative position with the frame 11, the conveyor belt 16 and the movement path of the lifting mechanism is stable. Simultaneously, the trigger reset assembly 20 is installed on the groove of the fixed lower plate 21. The trigger wedge 23 is slidably placed in the groove via the guide rod 24. The elastic element 25 is sleeved on the guide rod 24 and connects the trigger wedge 23 with the inner wall of the groove to form a reciprocating sliding structure. The movable upper plate 22 is slidably connected to the fixed lower plate 21 via the shaft 211. Its force-bearing part 221 bears the trapezoidal upper inclined surface of the trigger wedge 23. The rounded corner extension block and the smooth surface coating 222 on the side near the conveyor belt 16 cooperate to complete the connection transition. The sliding cooperation between the alignment strip 41 and the alignment groove 42 limits the trajectory of the movable upper plate 22. The pulley 43 in the inner cavity of the force-bearing part 221 forms rolling contact with surface a, together forming an adaptive linkage foundation.

[0026] Then, in the initial state, the elastic element 25 naturally extends and pushes the trigger wedge 23 out of the groove, and pushes the force-bearing part 221 of the movable upper plate 22 through the a surface, so that the movable upper plate 22 and the fixed lower plate 21 form a gap, forming an anti-fall step at the output end of the conveyor belt 16. Then, when the platform 14 is raised to the docking position, its side end squeezes the trigger wedge 23, forcing the trigger wedge 23 to overcome the elastic force of the elastic element 25 and slide along the guide rod 24 into the groove. The contact position between the a surface and the force-bearing part 221 changes, and the movable upper plate 22 slides down along the a surface under the action of gravity and approaches and fits the fixed lower plate 21 along the shaft 211. The anti-fall step disappears, forming a continuous transition ramp between the conveyor belt 16 and the platform 14 cargo compartment 15. Subsequently, the material box 17 is transferred from the conveyor belt 16 to the cargo bin 15 via the transition ramp. The cargo platform 14 continues to rise, the squeezing force on the trigger wedge 23 disappears, the elastic element 25 returns to its natural state and pushes the trigger wedge 23 to reset and extend along the guide rod 24, and pushes the movable upper plate 22 again to restore the anti-fall step state, completing one contact linkage cycle.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sprocket-type speed reduction and lifting device for conveying medicines, comprising a device body (1), wherein the device body (1) is provided with a frame (11), and a lifting mechanism consisting of a sprocket (12) and a chain (13) is installed on the frame (11), wherein a loading platform (14) for carrying a material box (17) is provided on the chain (13), and a loading chamber (15) is formed inside the loading platform (14). A conveyor belt (16) for inputting the material box (17) is provided on one side of the frame (11), and the output end of the conveyor belt (16) is adjacent to the movement path of the lifting mechanism. The characteristic feature is that: A connection structure (2) is provided between the output end of the conveyor belt (16) and the device body (1). The connection structure (2) includes a fixed lower plate (21) and a movable upper plate (22) that is movably installed above the fixed lower plate (21). The fixed lower plate (21) is provided with a trigger reset component (20). When the trigger reset component (20) is in its natural state, the trigger reset component (20) can lift the movable upper plate (22), so that a gap is generated between the movable upper plate (22) and the fixed lower plate (21). At this time, a fall prevention step is formed between the connecting structure (2) and the conveyor belt (16). When the platform (14) moves to the docking position and squeezes the trigger reset assembly (20), the trigger reset assembly (20) deforms under force, and the movable upper plate (22) slides down along the surface of the trigger reset assembly (20), so that the movable upper plate (22) fits against the fixed lower plate (21), thereby forming a continuous transition ramp between the conveyor belt (16) and the cargo compartment (15).

2. The sprocket-type speed reduction and lifting device for drug conveying according to claim 1, characterized in that: The connecting structure (2) is connected to the frame (11) through the mounting structure (3). The mounting structure (3) includes two side frames (31) installed on the side of the frame (11). The surface of each side frame (31) is equipped with a connector (32). The other end of each connector (32) is connected to both sides of the fixed lower plate (21).

3. The sprocket-type speed reduction and lifting device for drug conveying according to claim 2, characterized in that: The trigger reset assembly (20) includes a groove formed on the fixed lower plate (21), and a trigger wedge (23) is slidably disposed inside the groove. The trigger wedge (23) is connected to the groove through a guide rod (24). An elastic element (25) is connected between the trigger wedge (23) and the inner wall of the groove. The elastic element (25) is sleeved on the surface of the guide rod (24).

4. The sprocket-type speed reduction and lifting device for drug conveying according to claim 3, characterized in that: The trigger wedge (23) has a trapezoidal cross-section with both its upper and lower sides inclined. The upper surface of the trigger wedge (23) is surface a, and the lower surface of the trigger wedge (23) is surface b.

5. The sprocket-type speed reduction and lifting device for drug conveying according to claim 4, characterized in that: The movable upper plate (22) is fixedly installed with a force-bearing part (221) on the side away from the conveyor belt (16), and the bottom of the force-bearing part (221) is supported on surface a.

6. The sprocket-type speed reduction and lifting device for drug conveying according to claim 1, characterized in that: A shaft (211) is fixedly installed at the bottom of the movable upper plate (22), and the other end of the shaft (211) slides inside the fixed lower plate (21).

7. The sprocket-type speed reduction and lifting device for drug conveying according to claim 1, characterized in that: An extension block is fixedly installed on the side of the movable upper plate (22) near the conveyor belt (16), and the surface of the extension block has a rounded corner structure.

8. The sprocket-type speed reduction and lifting device for drug conveying according to claim 7, characterized in that: The surfaces of the movable upper plate (22) and the extension block are covered with a coating (222), and the surface of the coating (222) is smooth.

9. The sprocket-type speed reduction and lifting device for drug conveying according to claim 5, characterized in that: The side wall of the force-bearing part (221) is fixedly installed with a correction strip (41), and the surface of the fixed lower plate (21) is provided with a correction groove (42). During the process of the movable upper plate (22) being raised, the correction strip (41) can slide inside the correction groove (42).

10. The sprocket-type speed reduction and lifting device for drug conveying according to claim 5, characterized in that: The bottom of the force-bearing part (221) has an inner cavity, and a pulley (43) is rotatably installed inside the inner cavity. The bottom of the pulley (43) is attached to surface a.

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