Lifting device and magnetic drive conveying system

Abstract

The utility model relates to a kind of lifting device and magnetic drive conveying system.This lifting device includes bearing table, drive mechanism and counterweight mechanism, bearing table is used to carry the piece to be lifted, the output end of drive mechanism is connected with bearing table, drive mechanism is configured as drive bearing table movement along first direction;Counterweight mechanism includes counterweight assembly and connecting component, connecting component includes first end and second end, first end is connected with counterweight assembly, second end is connected with bearing table, counterweight assembly is used to drive first end downward movement along first direction, to drive second end upward movement along first direction.This lifting device shares the weight of bearing table and the piece to be lifted by counterweight mechanism and drive mechanism, thereby significantly reduce the stress of drive mechanism, reduce the deformation risk of drive mechanism.By drive mechanism cooperate with counterweight mechanism, the additional space and complex layout required by double-sided drive mechanism are avoided, and cost is lower.The weight of counterweight assembly is adjustable, improve the versatility of this lifting device.

Description

Technical Field

[0001] This utility model relates to the field of magnetic drive conveying technology, and in particular to a lifting device and a magnetic drive conveying system. Background Technology

[0002] Magnetic drive conveyor systems are gradually becoming core conveying equipment in high-end manufacturing fields such as semiconductors and new energy due to their advantages such as contactless drive, precise positioning and flexible layout.

[0003] The magnetic drive conveyor system includes a lifting device and a magnetic drive module. The lifting device includes a support platform, on which the magnetic drive module is placed to handle multi-level material transfer. Due to the higher cost of dual-sided drive structures and the narrower space in workshops, most lifting devices use a single-sided drive structure. However, because the magnetic drive module has a large load, the single-sided drive structure experiences greater stress and is prone to deformation. Utility Model Content

[0004] Therefore, it is necessary to provide a lifting device and a magnetic drive conveying system to address the problem of large stress and easy deformation in single-sided drive structures.

[0005] A lifting device, comprising:

[0006] A support platform is used to support the parts to be lifted or lowered.

[0007] A drive mechanism, the output end of which is connected to the support platform, is configured to drive the support platform to move;

[0008] The counterweight mechanism includes a counterweight assembly and a connecting assembly. The connecting assembly includes a first end and a second end. The first end is connected to the counterweight assembly, and the second end is connected to the support platform. The counterweight assembly is used to drive the first end to move downward, thereby driving the second end to move upward.

[0009] In one embodiment, the connection component includes:

[0010] Shaft;

[0011] A flexible connector includes a flexible segment, a first end, and a second end. The flexible segment is located between the first end and the second end. The flexible segment is bendable and slidably mounted on the pivot.

[0012] In one embodiment, the connection component further includes:

[0013] A pulley is rotatably mounted on the rotating shaft, and a limiting groove is formed in the circumference of the pulley. The flexible connector is slidably mounted in the limiting groove.

[0014] In one embodiment, the counterweight component includes:

[0015] The frame provides storage space;

[0016] Multiple counterweights, wherein the multiple counterweights are detachably housed within the accommodating space.

[0017] In one embodiment, a plurality of the counterweights are stacked within the accommodating space, and the counterweight assembly further includes:

[0018] A limiting post extends along the stacking direction of the plurality of counterweights. The limiting post has an abutting end. The limiting post is connected to the frame, and the position of the abutting end in the stacking direction of the plurality of counterweights is adjustable. The abutting end is used to abut against and limit the plurality of counterweights.

[0019] In one embodiment, the drive mechanism includes a drive component, the drive component comprising:

[0020] A transmission rod extends along a preset movement direction of the support platform, and the transmission rod is threadedly connected to the support platform;

[0021] The drive element is configured to drive the transmission rod to rotate about its own axis.

[0022] In one embodiment, the drive mechanism further includes a first guide component, the first guide component comprising:

[0023] A first guide rail and a guide block are provided. The first guide rail extends along a preset movement direction of the support platform, and the guide block slides with the first guide rail and is connected to the support platform.

[0024] In one embodiment, the drive mechanism further includes:

[0025] A braking element, which is used to limit the movement of the support platform.

[0026] In one embodiment, the lifting device further includes a frame, and both the drive mechanism and the counterweight mechanism are disposed on the frame. The counterweight mechanism further includes a second guide assembly, which includes:

[0027] The guide wheel is rotatably mounted on the counterweight assembly;

[0028] The second guide rail extends along the preset movement direction of the support platform. The second guide rail is mounted on the frame, and the guide wheel is slidably engaged with the second guide rail.

[0029] A magnetic drive conveying system, comprising:

[0030] Magnetic drive module;

[0031] As described above, in the lifting device, the magnetic drive module is placed on the support platform.

[0032] The aforementioned lifting device, through a counterweight mechanism, shares the weight of the platform and the component to be lifted with the drive mechanism, thereby significantly reducing the stress on the drive mechanism, lowering the risk of deformation, increasing its service life, and reducing maintenance costs. The presence of the counterweight mechanism allows the drive mechanism to provide only a small driving force to overcome the weight difference between the platform and the counterweight during lifting, reducing energy consumption and improving energy efficiency. By using a drive mechanism in conjunction with the counterweight mechanism, the additional space and complex layout required by dual-sided drive mechanisms are avoided, resulting in lower costs. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the lifting device (without frame) and magnetic drive module provided in an embodiment of the present invention.

[0034] Figure 2 This is a schematic diagram of the lifting device and magnetic drive module provided in an embodiment of the present invention.

[0035] Figure 3 This is a schematic diagram of the counterweight mechanism provided in one embodiment of the present utility model.

[0036] Figure 4 This is a schematic diagram of the structure of a counterweight component (with cover plate removed) provided in an embodiment of the present invention.

[0037] The above figures include the following reference numerals:

[0038] 100. Lifting device;

[0039] 1. Support platform;

[0040] 2. Drive mechanism; 21. Drive assembly; 211. Transmission rod; 212. Drive component; 22. First guide assembly; 221. First guide rail; 222. Guide block; 23. Braking component;

[0041] 3. Counterweight mechanism; 31. Counterweight assembly; 311. Frame; 3111. Frame body; 31111. Accommodation space; 3112. Cover plate; 3113. Guide wheel; 31131. Guide groove; 312. Counterweight; 313. Limiting post; 32. Connecting assembly; 321. Rotating shaft; 322. Flexible connector; 3221. First end; 3222. Second end; 323. Pulley; 324. Dust cover;

[0042] 4. Rack;

[0043] 200. Magnetic drive module; Detailed Implementation

[0044] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0045] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0047] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0048] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0049] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0050] like Figure 1 As shown, one embodiment of this application provides a lifting device 100, which includes a support platform 1, a drive mechanism 2, and a counterweight mechanism 3. The object to be lifted is placed on the support platform 1. The output end of the drive mechanism 2 is connected to the support platform 1, and the drive mechanism 2 is configured to drive the support platform 1 to move. The counterweight mechanism 3 includes a counterweight component 31 and a connecting component 32. The connecting component 32 includes a first end 3221 and a second end 3222. The first end 3221 is connected to the counterweight component 31, and the second end 3222 is connected to the support platform 1. The counterweight component 31 is used to drive the first end 3221 to move downward, so as to drive the second end 3222 to move upward.

[0051] This lifting device 100 adopts a single-sided drive configuration. The drive mechanism 2 is configured to drive the carrier platform 1 to move, and the object to be lifted is placed on the carrier platform 1, so that the lifting of the object to be lifted can be achieved through the drive mechanism 2. The first end 3221 of the connecting component 32 is connected to the counterweight component 31, and the second end 3222 of the connecting component 32 is connected to the carrier platform 1. The counterweight component 31 is used to drive the first end 3221 to move downward, so as to drive the second end 3222 to move upward. That is, the counterweight component 31 applies a continuous upward pulling force to the carrier platform 1 through the connecting component 32. This pulling force can share the weight of the carrier platform 1 and the object to be lifted on it with the drive mechanism 2. When the drive mechanism 2 drives the support platform 1 to rise, the drive mechanism 2 only needs to overcome the difference between the weight of the support platform 1 and the lifting component on it and the weight of the counterweight component 31 to drive the support platform 1 to rise; when the drive mechanism 2 drives the support platform 1 to fall, the drive mechanism 2 only needs to provide the braking force of the difference between the weight of the support platform 1 and the lifting component on it and the weight of the counterweight component 31 to make the support platform 1 fall smoothly.

[0052] A single-sided drive structure is prone to deformation under heavy loads on the support platform 1. This lifting device 100, through a counterweight mechanism 3, shares the weight of the support platform 1 and the components to be lifted with the drive mechanism 2, thereby significantly reducing the stress on the drive mechanism 2, lowering the risk of deformation, increasing its service life, and reducing maintenance costs. The presence of the counterweight mechanism 3 allows the drive mechanism 2 to provide only a small driving force to overcome the weight difference between the support platform 1 and the counterweight assembly 31 during lifting, reducing energy consumption and improving energy efficiency. By using the drive mechanism 2 in conjunction with the counterweight mechanism 3, the additional space and complex layout required by a dual-sided drive mechanism 2 are avoided, resulting in lower costs.

[0053] Optionally, the connecting assembly includes a rotating shaft 321 and a flexible connector 322. The flexible connector 322 includes a flexible segment, the aforementioned first end 3221, and the aforementioned second end 3222. The flexible segment is located between the first end 3221 and the second end 3222. The flexible segment is bendable and slidably rests on the rotating shaft 321. Through the flexible connector 322 resting on the rotating shaft 321, the downward pulling force applied to the first end 3221 by the counterweight assembly 31 connected to the first end 3221 is converted into an upward pulling force applied to the support platform 1 by the second end 3222. That is, the counterweight assembly 31 uses its own weight to share the weight of the support platform 1 and the lifting component carried on it, which are required by the drive mechanism 2.

[0054] It should be noted that the flexible connector 322 can be a steel wire rope, stainless steel strip or carbon fiber strip, etc. The specific selection of the flexible connector 322 depends on the actual needs, and this embodiment does not limit it.

[0055] Optionally, such as Figure 3 As shown, the connecting component 32 also includes a pulley 323, which is rotatably mounted on the rotating shaft 321. A limiting groove is formed in the circumference of the pulley 323, and the flexible connector 322 slides within the limiting groove. During the operation of the lifting device 100, the up-and-down movement of the support platform 1 causes the flexible connector 322 to slide within the limiting groove of the pulley 323. The limiting groove positions and guides the flexible connector 322, allowing it to move along a specific trajectory on the pulley 323. This prevents the flexible connector 322 from shifting, shaking, or falling off during sliding, thereby reducing problems such as shaking and vibration of the support platform 1 caused by the unstable movement of the flexible connector 322. The pulley 323 can rotate around the rotating shaft 321. When the flexible connector 322 moves, it will drive the pulley 323 to rotate, which will change the sliding friction between the flexible connector 322 and the rotating shaft 321 into rolling friction between the flexible connector 322 and the pulley 323. This greatly reduces the frictional resistance of the flexible connector 322 during its movement. On the one hand, it can reduce the wear of the flexible connector 322 and extend its service life. On the other hand, it can reduce the frictional force that the drive mechanism 2 needs to overcome when driving the support platform 1 to rise and fall, thereby reducing the energy consumption of the drive mechanism 2.

[0056] Specifically, such as Figure 2 As shown, the lifting device 100 also includes a frame 4, on which the drive mechanism 2 and the counterweight mechanism 3 are both mounted. The frame 4 serves as the basic support structure of the lifting device 100, providing a stable mounting platform for the drive mechanism 2 and the counterweight mechanism 3, thus making the lifting device 100 a whole.

[0057] Optionally, such as Figure 3 , Figure 4As shown, the counterweight assembly 31 includes a frame 311 and multiple counterweights 312. The frame 311 has an accommodating space 31111, and the multiple counterweights 312 are detachably housed within the accommodating space 31111. By changing the number of counterweights 312 within the accommodating space 31111, the overall weight of the counterweight assembly 31 is adjusted. When the weight of the magnetic drive module 100 or the material placed on the support platform 1 changes, the number of counterweights 312 within the frame 311 is increased or decreased accordingly, so that the weight of the counterweight assembly 31 matches the weight of the support platform 1 and its load. Thus, during the lifting process, a suitable continuous upward pulling force is applied to the support platform 1 through the connecting assembly 32 to share part of the weight of the support platform 1 and the object to be lifted, allowing the drive mechanism 2 to drive the support platform 1 to lift only by overcoming the weight difference between the support platform 1 and the object to be lifted and the counterweight assembly 31. This counterweight component 31 can adjust the weight according to the actual load weight of the support platform 1, so that the lifting device 100 can be used for magnetic drive modules 100 or materials of different weights, thereby improving the versatility of the lifting device 100.

[0058] Specifically, such as Figure 4 As shown, the frame 311 includes a frame body 3111 and a cover plate 3112. The frame body 3111 has a communicating opening and the aforementioned accommodating space 31111. The cover plate 3112 can block or open the opening. When it is necessary to add or remove the counterweight 312, the cover plate 3112 is opened to put the counterweight 312 into or remove the accommodating space 31111. After the counterweight 312 has been added or removed, the cover plate 3112 is closed to block the opening.

[0059] Optionally, such as Figure 4 As shown, multiple counterweights 312 are stacked within the accommodating space 31111. The counterweight assembly 31 also includes a limiting post 313, which extends along the stacking direction of the multiple counterweights 312. The limiting post 313 has an abutting end and is connected to the frame 311. The position of the abutting end along the stacking direction of the multiple counterweights 312 is adjustable, and the abutting end is used to press against and limit the multiple counterweights 312. When the multiple counterweights 312 are stacked within the accommodating space 31111, vibrations may occur during the operation of the lifting device 100. By adjusting the position of the abutting end of the limiting post 313 along the stacking direction of the multiple counterweights 312, the limiting post 313 presses against the multiple counterweights 312, thereby constraining the counterweights 312 and ensuring the overall structural stability of the counterweight assembly 31.

[0060] In some embodiments, the limiting post 313 is threaded to the frame 311, and the position of the abutment end along the stacking direction of the multiple counterweights 312 can be changed by rotating the limiting post 313. In other embodiments, the limiting post 313 is inserted into the frame 311, and the position of the abutment end along the stacking direction of the multiple counterweights 312 can be changed by changing the insertion depth of the limiting post 313.

[0061] It should be noted that the number of limit posts 313 is not limited and can be set according to actual needs.

[0062] In some embodiments, such as Figure 3 As shown, the connecting assembly 32 also includes a dust cover 324, which covers the outer periphery of the pulley 323. The dust cover 324 has at least two outlets, with the first end 3221 and the second end 3222 respectively passing through the corresponding outlets. The dust cover 324 can prevent dust, debris, etc. from entering the pulley 323 area, avoiding dust, debris, etc. from adhering to the surface of the pulley 323, the flexible connector 322, and the connection between the pulley 323 and the shaft 321, thus preventing the accumulation of dust from increasing the friction when the pulley 323 rotates and the friction when the flexible connector 322 slides.

[0063] In some embodiments, the dust cover 324 is a half-cover structure, that is, the dust cover 324 only covers the upper half of the pulley 323. In this case, the dust cover 324 can still play a good dust prevention role, and can also reduce production costs and production difficulty. Furthermore, when the pulley 323 needs to be cleaned, maintenance personnel do not need to remove the dust cover 324 and can directly carry out the cleaning operation, which improves the cleaning and maintenance efficiency.

[0064] For ease of description, the preset movement direction of the support platform 1 is defined as the first direction, where, Figures 1-4 The Z direction in the equation is the first direction.

[0065] Optionally, such as Figure 1 As shown, the drive mechanism 2 includes a drive assembly 21, which includes a transmission rod 211 and a drive member 212. The transmission rod 211 extends along a first direction and is threadedly connected to the support platform 1. The drive member 212 is configured to drive the transmission rod 211 to rotate about its own axis. The transmission rod 211 is threadedly connected to the support platform 1. When the drive member 212 drives the transmission rod 211 to rotate about its own axis, according to the thread pitch, for every certain angle the transmission rod 211 rotates, the support platform 1 will move a certain distance along the first direction.

[0066] Specifically, the fixed end of the drive component 212 is fixed on the frame 4. The drive component 212 can be a stepper motor, servo motor, etc. The specific selection depends on the actual needs, and this embodiment does not limit it.

[0067] Optionally, such as Figure 1As shown, the drive mechanism 2 also includes a first guide component 22, which includes a first guide rail 221 and a guide block 222. The first guide rail 221 extends along a first direction, and the guide block 222 is slidably engaged with the first guide rail 221 and connected to the support platform 1. The first guide component 22 provides a clear guide for the movement of the support platform 1, ensuring that the support platform 1 can only move in a straight line along the direction of the first guide rail 221, i.e., the first direction, preventing the support platform 1 from deviating or twisting during operation.

[0068] Specifically, the first guide rail 221 is mounted on the frame 4.

[0069] It should be noted that there can be multiple sets of the first guide assembly 22, and these multiple sets of guide assemblies are distributed at intervals on the rack 4.

[0070] In some embodiments, such as Figure 1 As shown, the drive mechanism 2 also includes a brake 23, which is used to limit the movement of the platform 1. When the platform 1 needs to be stopped accurately at a designated position, the brake 23 can quickly stop the platform 1, reducing inertial displacement during the stopping process and improving the positioning accuracy of the platform 1. When the platform 1 is stationary, the brake 23 can bear most of the braking force, reducing the load on the drive mechanism 2 and avoiding the risk of damage to the drive mechanism 2 due to overload. In addition, when the drive mechanism 2 malfunctions, the platform 1 may fall rapidly due to gravity. The brake 23 can quickly take effect to limit the movement of the platform 1 and prevent it from falling accidentally.

[0071] Specifically, the braking component 23 is a pneumatic caliper. The fixed end of the pneumatic caliper is fixed to the support platform 1. The caliper head is directly opposite the first guide rail 221. When the pneumatic caliper needs to brake, the caliper head can clamp the first guide rail 221 to limit the displacement of the support platform 1.

[0072] Optionally, such as Figure 1 , Figure 3 and Figure 4As shown, the counterweight mechanism 3 also includes a second guide assembly, which includes a guide wheel 3113 and a second guide rail. The guide wheel 3113 is rotatably mounted on the counterweight assembly 31. The second guide rail extends along a first direction and is mounted on the frame 4. The guide wheel 3113 is slidably engaged with the second guide rail. The second guide assembly provides a clear running trajectory for the movement of the counterweight assembly 31, ensuring that the guide assembly can only move along the direction specified by the second guide rail, i.e., the first direction. This prevents the counterweight assembly 31 from deviating or twisting during operation, further preventing interference with the normal lifting and lowering of the support platform 1. The guide wheel 3113 and the second guide rail experience rolling friction. Compared to sliding friction, rolling friction has less resistance, reducing wear between the guide wheel 3113 and the second guide rail, and effectively reducing the noise level during the movement of the lifting device 100.

[0073] Specifically, such as Figure 3 , Figure 4 As shown, the second guide assembly can have multiple guide wheels 3113, which are spaced apart along the first direction. Each guide wheel 3113 can constrain the movement of the counterweight assembly 31, enabling more precise control of the movement trajectory of the counterweight assembly 31 and reducing its offset and swaying in the first direction.

[0074] It should be noted that, as Figure 3 , Figure 4 As shown, there can be two sets of second guide components, which are arranged on opposite sides of the counterweight component 31. The two sets of second guide components guide the counterweight component 31 from opposite sides, which can more accurately limit the movement trajectory of the counterweight component 31 and balance the lateral force and torque generated by the counterweight component 31 during movement.

[0075] Optionally, such as Figure 3 As shown, the outer periphery of the guide wheel 3113 has a guide groove 31131. Along the direction close to the second guide rail, the two groove walls of the guide groove 31131 extend in a direction away from each other, and the shape of the second guide rail matches the guide groove 31131. That is, the guide groove 31131 is a V-shaped groove. When the counterweight assembly 31 shifts to one side relative to the guide rail due to external factors, the V-shaped groove design allows the guide wheel 3113 to automatically center, thereby ensuring that the counterweight assembly 31 can always move along the preset trajectory.

[0076] This application also provides a magnetic drive conveying system, including a magnetic drive module 200 and a lifting device 100 as described above, wherein the magnetic drive module 200 is placed on a support platform 1. In this magnetic drive conveying system, the lifting device 100 is used to lift the magnetic drive module 200, which can alleviate the structural deformation of the drive mechanism 2 and ensure docking accuracy.

[0077] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0078] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A lifting device, characterized in that, include: The support platform (1) is used to support the parts to be lifted; A drive mechanism (2) is provided, the output end of which is connected to the support platform (1), and the drive mechanism (2) is configured to drive the support platform (1) to move. The counterweight mechanism (3) includes a counterweight assembly (31) and a connecting assembly (32). The connecting assembly (32) includes a first end (3221) and a second end (3222). The first end (3221) is connected to the counterweight assembly (31), and the second end (3222) is connected to the support platform (1). The counterweight assembly (31) is used to drive the first end (3221) to move downward, so as to drive the second end (3222) to move upward.

2. The lifting device according to claim 1, characterized in that, The connection component includes: Rotating shaft (321); The flexible connector (322) includes a flexible segment, a first end (3221) and a second end (3222). The flexible segment is located between the first end (3221) and the second end (3222). The flexible segment is bendable and slidably mounted on the pivot (321).

3. The lifting device according to claim 2, characterized in that, The connection component (32) further includes: A pulley (323) is rotatably mounted on the rotating shaft (321). A limiting groove is provided in the circumference of the pulley (323), and the flexible connector (322) is slidably mounted in the limiting groove.

4. The lifting device according to claim 1, characterized in that, The counterweight assembly (31) includes: The frame (311) has an accommodating space (31111); Multiple counterweights (312) are detachably housed within the accommodating space (31111).

5. The lifting device according to claim 4, characterized in that, Multiple counterweights (312) are stacked within the accommodating space (31111), and the counterweight assembly (31) further includes: A limiting post (313) extends along the stacking direction of the plurality of counterweights (312), the limiting post (313) has an abutting end, the limiting post (313) is connected to the frame (311), and the position of the abutting end along the stacking direction of the plurality of counterweights (312) is adjustable, the abutting end is used to abut against and limit the plurality of counterweights (312).

6. The lifting device according to claim 1, characterized in that, The drive mechanism (2) includes a drive component (21), which includes: The transmission rod (211) extends along the preset movement direction of the support platform (1), and the transmission rod (211) is threadedly connected to the support platform (1); The drive element (212) is configured to drive the transmission rod (211) to rotate about its own axis.

7. The lifting device according to claim 6, characterized in that, The drive mechanism (2) further includes a first guide component (22), which includes: The first guide rail (221) and the guide block (222) are connected to the support platform (1). The first guide rail (221) extends along the preset movement direction of the support platform (1), and the guide block (222) slides with the first guide rail (221). The guide block (222) is connected to the support platform (1).

8. The lifting device according to claim 6, characterized in that, The drive mechanism (2) further includes: Braking element (23) is used to restrict the movement of the support platform (1).

9. The lifting device according to claim 1, characterized in that, The lifting device further includes a frame (4), and the drive mechanism (2) and the counterweight mechanism (3) are both mounted on the frame (4). The counterweight mechanism (3) further includes a second guide assembly, which includes: The guide wheel (3113) is rotatably mounted on the counterweight assembly (31); The second guide rail extends along the preset movement direction of the support platform (1), and the second guide rail is set on the frame (4). The guide wheel (3113) is slidably engaged with the second guide rail.

10. A magnetic drive conveying system, characterized in that, include: Magnetic drive module (200); In any one of claims 1-9, the lifting device (100) has the magnetic drive module (200) placed on the support platform (1).

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