stacker

Abstract

The application provides a stacker, which comprises a frame, a synchronous wheel structure arranged on the frame, a synchronous belt structure and a driving structure, the synchronous belt structure is wound on the synchronous wheel structure, the driving structure is arranged on the frame and can drive the synchronous belt structure to rotate, and a loading platform connected to the synchronous belt structure. The stacker provided by the application drives the loading platform to ascend or descend through the synchronous belt structure, which meets the lifting requirement of heavy loads and guarantees the cleanliness inside the stacker.

Description

Technical Field

[0001] This utility model belongs to the field of battery manufacturing technology, specifically, it relates to a stacker crane. Background Technology

[0002] In the fields of warehousing and logistics and industrial production, stacker cranes, as important material handling equipment, undertake the key tasks of vertical lifting and storage of materials.

[0003] Currently, stacker cranes primarily rely on wire ropes or chains to lift materials. However, both wire ropes and chains require regular lubrication during operation. But lubricating oil is prone to leakage and dripping during use, inevitably contaminating the materials and potentially leading to decreased material quality and performance degradation.

[0004] Therefore, developing a new stacker crane lifting technology that eliminates the need for lubricating oil or effectively avoids lubricating oil contamination of materials during the material lifting process has become an important issue that urgently needs to be addressed in the industry. Utility Model Content

[0005] One objective of this invention is to provide a new technical solution for a stacker crane.

[0006] According to a first aspect of the present invention, a stacker crane is provided, comprising:

[0007] A frame, on which a synchronous pulley structure is provided;

[0008] A timing belt structure and a drive structure, wherein the timing belt structure is wound around the timing pulley structure, and the drive structure is disposed on the frame and is capable of driving the timing belt structure to rotate;

[0009] A loading platform connected to the synchronous belt structure.

[0010] Optionally, the timing belt structure includes an open timing belt, and a connecting structure is provided on the loading platform, with both ends of the open timing belt connected to the connecting structure.

[0011] Optionally, the connecting structure has a first toothed plate structure and a second toothed plate structure, one end of the open synchronous belt is connected to the first toothed plate structure, and the other end of the open synchronous belt is connected to the second toothed plate structure.

[0012] Optionally, the connection structure is provided with a detection component, which is disposed between the first toothed plate structure and the second toothed plate structure and is used to detect the tension state of the synchronous belt structure.

[0013] Optionally, the synchronous pulley structure includes a main synchronous pulley and a driven synchronous pulley. The main synchronous pulley is located at the bottom of the frame and is connected to the drive structure for transmission. The driven synchronous pulley is located at the top of the frame. The synchronous belt structure is wound around the main synchronous pulley and the driven synchronous pulley.

[0014] Optionally, the main synchronizing pulley includes a first main synchronizing pulley and a second main synchronizing pulley that are spaced apart, and the timing belt structure includes a first timing belt and a second timing belt, wherein the first timing belt is wound around the first main synchronizing pulley and the second timing belt is wound around the second main synchronizing pulley;

[0015] The loading platform is connected to the first synchronous belt and the second synchronous belt on both sides, respectively.

[0016] Optionally, the first synchronous belt includes a first metal core and a first protective layer, wherein the first protective layer covers the surface of the first metal core;

[0017] The second synchronous belt includes a second metal core and a second protective layer, with the second protective layer covering the surface of the second metal core.

[0018] Optionally, the synchronizing pulley structure includes a coupling connected between the first main synchronizing pulley and the second main synchronizing pulley, wherein the first main synchronizing pulley or the second main synchronizing pulley is connected to the driving structure for transmission.

[0019] Optionally, both the first and second synchronous belts are arranged in a ring structure, and the axis of the ring structure is parallel to the moving direction of the stacker crane.

[0020] Optionally, the drive structure includes a drive motor, a driving wheel, a driven wheel, and a toothed belt, and the frame includes a lower crossbeam;

[0021] The drive motor is mounted on the lower crossbeam and is used to drive the drive wheel to rotate. The driven wheel is coaxially connected to the synchronous pulley structure. The toothed belt is wound around the drive wheel and the driven wheel.

[0022] One technical advantage of this utility model is:

[0023] This application provides a stacker crane, which includes a frame with a synchronous pulley structure mounted on the frame; a synchronous belt structure and a drive structure, wherein the synchronous belt structure is wound around the synchronous pulley structure, and the drive structure is mounted on the frame and capable of driving the synchronous belt structure to rotate; and a loading platform connected to the synchronous belt structure. The stacker crane provided in this application uses the synchronous belt structure to raise or lower the loading platform, thus meeting the lifting requirements of heavy-duty goods while ensuring the cleanliness of the stacker crane's interior.

[0024] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0025] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0026] Figure 1 A schematic diagram of a stacker crane provided for one embodiment of the present utility model;

[0027] Figure 2 A front view of a stacker crane provided in one embodiment of this utility model;

[0028] Figure 3 A schematic diagram of the drive structure connection of a stacker crane provided in one embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the loading platform structure of a stacker crane according to one embodiment of the present invention.

[0030] in:

[0031] 1. Frame; 11. Synchronous pulley structure; 111. Main synchronous pulley; 1111. First main synchronous pulley; 1112. Second main synchronous pulley; 112. Driven synchronous pulley; 113. Coupling; 12. Lower crossbeam; 2. Synchronous belt structure; 21. First synchronous belt; 22. Second synchronous belt; 3. Drive structure; 31. Drive motor; 32. Driving pulley; 33. Driven pulley; 34. Toothed belt; 4. Cargo platform; 41. Connecting structure; 411. First toothed plate structure; 412. Second toothed plate structure; 413. Detection assembly. Detailed Implementation

[0032] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0033] The embodiments of this application will now be described in detail, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0034] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0035] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "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 based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not 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 application.

[0036] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0037] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0038] Reference Figure 1 and Figure 2 This application provides a stacker crane, which includes:

[0039] Frame 1, on which a synchronous pulley structure 11 is provided;

[0040] Synchronous belt structure 2 and drive structure 3, the synchronous belt structure 2 is wound around the synchronous pulley structure 11, and the drive structure 3 is set on the frame 1 and can drive the synchronous belt structure 2 to rotate.

[0041] Cargo platform 4 is connected to synchronous belt structure 2.

[0042] In the above embodiment, the frame 1 serves as the supporting structure of the entire stacker crane, providing an installation and fixing foundation for other components of the stacker crane. This ensures that components such as the synchronous wheel structure 11, drive structure 3, synchronous belt structure 2, and loading platform 4 can be accurately installed and operated, ensuring the stability of the relative positional relationship between the various components of the stacker crane. This allows the entire stacker crane to form an organic whole and effectively realize the function of material lifting.

[0043] See Figure 1 The synchronous pulley structure 11 and the synchronous belt structure 2 work together to transmit power and change the rotation direction of the synchronous belt structure 2. The rotation of the synchronous pulley in the synchronous pulley structure 11 drives the synchronous belt structure 2 to rotate, thereby raising and lowering the loading platform 4. The synchronous pulley structure 11 ensures smoother and more accurate power transmission, allowing precise control of the speed and position of the synchronous belt in the synchronous belt structure 2. This, in turn, enables precise control of the lifting height of the loading platform, improving the accuracy and stability of the stacker crane in lifting materials.

[0044] In addition, the synchronous pulley and synchronous belt transmission method has lower noise and less vibration compared with the traditional wire rope or chain transmission, which improves the quietness and stability of equipment operation.

[0045] In the above embodiments, the loading platform 4 is used for vertically transferring materials such as electrode rolls and batteries. The platform 4 rises or falls due to the rotational motion of the synchronous belt structure 2, thus achieving the lifting and handling functions of the materials. The synchronous belt structure 2 may include an H14M toothed synchronous belt (trapezoidal teeth with a tooth pitch of 14 mm). On the one hand, the synchronous belt structure 2 can meet the lifting requirements of heavy-duty goods, possessing high strength and load-bearing capacity, and can safely and reliably transport heavy materials. On the other hand, the surface of the synchronous belt structure 2 is generally smooth, and no lubricating oil is required during operation. Therefore, there is no problem of lubricating oil leakage or dripping causing contamination of the materials, effectively solving the problem of easy contamination of materials in scenarios with high cleanliness requirements, and ensuring that the quality and performance of the materials are not affected by the lifting process.

[0046] In one specific embodiment, the loading platform 4 is used for vertically transferring electrode rolls used in battery manufacturing. The cleanliness of the electrode rolls must be strictly controlled during this transfer. Electrode rolls are typically transported to the electrode roll storage area via a logistics conveyor line, and then moved to the shelving location by a stacker crane. When electrode rolls need to be shipped out for production, the stacker crane moves them from the storage location to the logistics line platform, and then transports them to the production section. The entire storage and retrieval process of the electrode rolls is handled by a stacker crane. The stacker crane provided in this embodiment uses a synchronous belt structure 2 to drive the loading platform 4 up or down, ensuring the cleanliness of the stacker crane and avoiding the risk of contamination during electrode roll handling.

[0047] See Figure 1The drive structure 3 may include a motor or a pneumatic motor. The drive structure 3 provides power for the rotational motion of the synchronous belt structure 2 and can serve as the power source for lifting the entire loading platform 4, enabling the lifting and lowering operation of the loading platform 4. Through its connection with the synchronous belt structure 2, the loading platform 4 achieves lifting and lowering motion under the drive of the synchronous belt, thereby lifting materials from the starting position to the target position, or lowering materials from the target position to the starting position, improving the accuracy and reliability of material handling.

[0048] In some embodiments, see Figure 1 The timing belt structure 2 includes an open timing belt, and a connecting structure 41 is provided on the loading platform 4. Both ends of the open timing belt are connected to the connecting structure 41.

[0049] In the above embodiments, the open-end synchronous belt has a certain degree of length adjustability. It can be easily cut and connected to a suitable length according to the actual lifting height required by the stacker crane, adapting to the diverse requirements for material lifting height in different working scenarios. The connecting structure 41 firmly fixes both ends of the open-end synchronous belt to the loading platform 4. For example, the two ends of the open-end synchronous belt can be snapped or clamped to the connecting structure 41, ensuring that there is no relative slippage or separation between the two during the lifting and lowering process of the synchronous belt structure 2 driving the loading platform 4, thereby ensuring that power can be stably transmitted to the loading platform 4.

[0050] When the drive structure 3 drives the synchronous pulley structure 11 to rotate, the open synchronous belt, through the meshing of the teeth between itself and the synchronous pulley structure 11, converts the rotational motion of the synchronous pulley structure 11 into its own linear reciprocating motion, thereby realizing the lifting and lowering of the loading platform 4, completing the function of material lifting, enhancing the structural strength and stability of the entire stacker crane, and reducing the probability of failure during the operation of the stacker crane.

[0051] In some embodiments, see Figure 1 and Figure 4 The connecting structure 41 has a first toothed plate structure 411 and a second toothed plate structure 412. One end of the open synchronous belt is connected to the first toothed plate structure 411, and the other end of the open synchronous belt is connected to the second toothed plate structure 412.

[0052] In the above embodiment, the two ends of the open synchronous belt are respectively connected to the first toothed plate structure 411 and the second toothed plate structure 412, so that the open synchronous belt and the connecting structure 41 form a complete closed transmission path. When the driving structure 3 drives the synchronous pulley of the synchronous pulley structure 11 to rotate, the open synchronous belt can circulate on the synchronous pulley structure 11, thereby realizing the lifting and lowering operation of the loading platform.

[0053] In one embodiment, both the first toothed plate structure 411 and the second toothed plate structure 412 may include toothed plates and clamping plates. The first toothed plate structure 411 and the second toothed plate structure 412 provide interfaces of a specific shape for connecting the two ends of the open synchronous belt. The toothed plates of the first toothed plate structure 411 and the second toothed plate structure 412 can match the toothed grooves on the ends of the open synchronous belt. The toothed plates and the clamping plates clamp the ends of the synchronous belt, achieving precise clamping and positioning of the open synchronous belt. When the stacker crane lifts heavy objects, this allows the synchronous belt structure 2 to withstand greater tensile force, ensuring that the synchronous belt structure 2 will not detach from the connecting structure 41, thus improving the safety of the stacker crane operation.

[0054] In some embodiments, see Figure 4 A detection component 413 is provided on the connecting structure 41. The detection component 413 is located between the first toothed plate structure 411 and the second toothed plate structure 412 and is used to detect the tension state of the synchronous belt structure 2.

[0055] In the above embodiments, excessive tension in the synchronous belt structure 2 may lead to excessive wear or even breakage of the synchronous belt; while insufficient tension in the synchronous belt structure 2 may cause problems such as synchronous belt slippage and decreased transmission accuracy. The detection component 413 provided in this application embodiment can detect the tension of the synchronous belt structure 2 in a timely manner. When the synchronous belt of the synchronous belt structure 2 becomes loose or breaks, the detection component 413, such as the micro-motion detection switch, is triggered and issues an alarm signal to promptly detect the aforementioned potential faults and ensure that the stacker crane maintains good transmission performance and stability during operation.

[0056] In one embodiment, the detection component 413 can be positioned close to the first toothed plate structure 411 to detect the tension of the timing belt in a timely manner, reducing measurement errors caused by improper detection position, providing more accurate feedback to the control system, enabling the control system to adjust the tension of the timing belt more precisely, thereby improving the operating accuracy and performance of the stacker crane.

[0057] In some embodiments, see Figure 1 and Figure 3 The synchronous pulley structure 11 includes a main synchronous pulley 111 and a driven synchronous pulley 112. The main synchronous pulley 111 is located at the bottom of the frame 1 and is connected to the drive structure 3 for transmission. The driven synchronous pulley 112 is located at the top of the frame 1. The synchronous belt structure 2 is wound around the main synchronous pulley 111 and the driven synchronous pulley 112.

[0058] In the above embodiments, both the main synchronous pulley 111 and the driven synchronous pulley 112 adopt a toothed meshing transmission method with the synchronous belt to improve the accuracy of transmission; moreover, the cooperation between the main synchronous pulley 111 and the driven synchronous pulley 112 enables the synchronous belt structure 2 to maintain a stable tension and movement trajectory during operation, thereby ensuring precise control of the lifting position of the loading platform.

[0059] See Figure 1 The main synchronous wheel 111 is set at the bottom of the frame 1 and connected to the drive structure 3 to utilize the space at the bottom of the frame 1, making the arrangement of the power source formed by the synchronous wheel structure 11 and the drive structure 3 more compact and reasonable, which helps to lower the overall center of gravity of the stacker crane and improve the stability of the stacker crane.

[0060] In some embodiments, see Figure 1 and Figure 3 The main synchronous pulley 111 includes a first main synchronous pulley 1111 and a second main synchronous pulley 1112 that are spaced apart. The synchronous belt structure 2 includes a first synchronous belt 21 and a second synchronous belt 22. The first synchronous belt 21 is wound around the first main synchronous pulley 1111 and the first slave synchronous pulley of the slave synchronous pulley 112. The second synchronous belt 22 is wound around the second main synchronous pulley 1112 and the second slave synchronous pulley of the slave synchronous pulley 112.

[0061] The first synchronous belt 21 and the second synchronous belt 22 are connected to the two sides of the loading platform 4, respectively.

[0062] In the above embodiment, the first synchronous belt 21 and the second synchronous belt 22 are respectively connected to the corresponding main synchronous pulleys to form two independent transmission circuits. The transmission paths formed by the two synchronous belts are connected to both sides of the loading platform 4, so that the weight of the loading platform 4 and the material it carries can be evenly distributed on the two synchronous belts. This avoids problems such as uneven stress on the synchronous belts, increased wear, and tilting of the loading platform caused by the load being concentrated on one side, thereby improving the stability and reliability of the operation of the loading platform 4.

[0063] In some embodiments, the first synchronization belt 21 includes a first metal core and a first protective layer, wherein the first protective layer covers the surface of the first metal core;

[0064] The second synchronous belt 22 includes a second metal core and a second protective layer, with the second protective layer covering the surface of the second metal core.

[0065] In the above embodiments, the first and second metal cores can be steel wires or fiber filaments, providing a basic shape and strength framework for the synchronous belt, enabling it to withstand high tension and torque, and ensuring that it does not undergo excessive deformation or breakage during transmission. The first and second protective layers can be polymer protective layers such as polyurethane, forming the synchronous belt by covering the metal core with polymer protective layers. This allows the synchronous belt to meet both the lifting requirements for heavy-duty goods and the cleanliness requirements.

[0066] Moreover, the protective layer has a low coefficient of friction, which can reduce the frictional resistance between the synchronous belt and the synchronous pulley, reduce energy loss during transmission, and improve transmission efficiency.

[0067] In some embodiments, see Figure 3 The synchronous pulley structure 11 includes a coupling 113, which is connected between the first main synchronous pulley 1111 and the second main synchronous pulley 1112. The first main synchronous pulley 1111 or the second main synchronous pulley 1112 is connected to the drive structure 3 for transmission.

[0068] In the above embodiment, the first main synchronous pulley 1111 and the second main synchronous pulley 1112 are connected by the coupling 113 to ensure that the power output by the drive structure 3 can be transmitted to the two main synchronous pulleys synchronously and evenly, so that the first main synchronous pulley 1111 and the second main synchronous pulley 1112 can rotate at the same speed and direction, thereby driving the two synchronous belts to move synchronously and ensuring that the loading platform is lifted and lowered smoothly.

[0069] During actual installation, there may be a certain coaxiality error between the first main synchronous pulley 1111 and the second main synchronous pulley 1112. The compensation function of the coupling 113 can allow for a certain degree of such error without affecting the normal operation of the transmission system and maintaining the stability of the transmission.

[0070] In some embodiments, see Figure 1 and Figure 2 The first synchronous belt 21 and the second synchronous belt 22 are both arranged in a ring structure, and the axis of the ring structure is parallel to the movement direction of the stacker crane.

[0071] In the above embodiments, the movement direction of the stacker crane can be as follows: Figure 2 As shown in the left-right direction, setting the axis of the annular synchronous belt parallel to the direction of movement of the stacker crane allows for a more rational and compact spatial layout of the synchronous belt within the stacker crane, reducing the occupancy of lateral space. Furthermore, during stacker crane operation, the movement of the stacker crane generates airflow. When the axis of the annular synchronous belt is parallel to the direction of movement, it helps guide the airflow smoothly across the surface of the synchronous belt, reducing wind resistance in the synchronous belt structure 2, preventing swaying of the synchronous belt structure 2, and improving the overall coordination and operational stability of the stacker crane.

[0072] In some embodiments, see Figure 3 The drive structure 3 includes a drive motor 31, a drive wheel 32, a driven wheel 33, and a toothed belt 34; the frame 1 includes a lower crossbeam 12.

[0073] The drive motor 31 is mounted on the lower crossbeam 12 and is used to drive the drive wheel 32 to rotate. The driven wheel 33 is coaxially connected to the synchronous pulley structure 11. The toothed belt 34 is wound around the drive wheel 32 and the driven wheel 33.

[0074] In the above embodiment, the drive structure 3 is driven by the drive motor 31 of the geared motor structure to provide rotational power to the synchronous belt structure 2, so that the stacker crane can perform actions such as lifting and lowering the loading platform 4.

[0075] See Figure 1 The lower crossbeam 12 provides a stable mounting position for components such as the drive motor, and bears the various forces and torques generated during the operation of the drive structure 3, ensuring the stability and rigidity of the entire stacker crane structure. The driven wheel 33 of the drive structure 3 is coaxially connected with the synchronous pulley structure 11, directly transmitting the power from the toothed belt 34 to the synchronous pulley structure 11, enabling the synchronous pulley structure 11 to drive the synchronous belt to move, thereby realizing the lifting and lowering of the loading platform 4, ensuring the synchronicity and accuracy of power transmission.

[0076] In one embodiment, see Figure 3 The output shaft of the drive motor 31 is perpendicular to the circumference of the drive wheel 32, which can shorten the length of the transmission chain and make the drive structure 3 form a compact power transmission module, thereby saving the installation space of the equipment.

[0077] The stacker crane operation process provided in this application embodiment can be as follows: after the stacker crane picks up the material with the forks and places it on the loading platform 4, the drive structure 3 starts and drives the synchronous belt structure 2 to rotate. Since the synchronous belt structure 2 is connected to the loading platform, when the synchronous belt structure 2 rotates, it drives the loading platform 4 to move up and down, thereby realizing the transfer of materials.

[0078] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A stacker crane, characterized in that, include: A frame (1) is provided with a synchronous wheel structure (11). A synchronous belt structure (2) and a drive structure (3) are provided, wherein the synchronous belt structure (2) is wound around the synchronous pulley structure (11), and the drive structure (3) is disposed on the frame (1) and is capable of driving the synchronous belt structure (2) to rotate; Cargo platform (4), which is connected to the synchronous belt structure (2); The synchronous pulley structure (11) includes a main synchronous pulley (111) and a slave synchronous pulley (112). The main synchronous pulley (111) is located at the bottom of the frame (1) and is connected to the drive structure (3) for transmission. The slave synchronous pulley (112) is located at the top of the frame (1). The synchronous belt structure (2) is wound around the main synchronous pulley (111) and the slave synchronous pulley (112).

2. The stacker crane according to claim 1, characterized in that, The timing belt structure (2) includes an open timing belt, and a connecting structure (41) is provided on the loading platform (4), with both ends of the open timing belt connected to the connecting structure (41).

3. The stacker crane according to claim 2, characterized in that, The connecting structure (41) has a first toothed plate structure (411) and a second toothed plate structure (412). One end of the open synchronous belt is connected to the first toothed plate structure (411), and the other end of the open synchronous belt is connected to the second toothed plate structure (412).

4. The stacker crane according to claim 3, characterized in that, The connection structure (41) is provided with a detection component (413), which is located between the first toothed plate structure (411) and the second toothed plate structure (412) and is used to detect the tension state of the synchronous belt structure (2).

5. The stacker crane according to claim 1, characterized in that, The main synchronizing pulley (111) includes a first main synchronizing pulley (1111) and a second main synchronizing pulley (1112) arranged at intervals. The synchronous belt structure (2) includes a first synchronous belt (21) and a second synchronous belt (22). The first synchronous belt (21) is wound around the first main synchronizing pulley (1111), and the second synchronous belt (22) is wound around the second main synchronizing pulley (1112). The first synchronous belt (21) and the second synchronous belt (22) are respectively connected to both sides of the loading platform (4).

6. The stacker crane according to claim 5, characterized in that, The first synchronous belt (21) includes a first metal core and a first protective layer, wherein the first protective layer covers the surface of the first metal core; The second synchronous belt (22) includes a second metal core and a second protective layer, with the second protective layer covering the surface of the second metal core.

7. The stacker crane according to claim 5, characterized in that, The synchronous pulley structure (11) includes a coupling (113), which is connected between the first main synchronous pulley (1111) and the second main synchronous pulley (1112). The first main synchronous pulley (1111) or the second main synchronous pulley (1112) is connected to the drive structure (3) for transmission.

8. The stacker crane according to claim 5, characterized in that, The first synchronous belt (21) and the second synchronous belt (22) are both arranged in a ring structure, and the axis of the ring structure is parallel to the moving direction of the stacker crane.

9. The stacker crane according to claim 1, characterized in that, The drive structure (3) includes a drive motor (31), a drive wheel (32), a driven wheel (33), and a toothed belt (34), and the frame (1) includes a lower crossbeam (12). The drive motor (31) is mounted on the lower crossbeam (12) and is used to drive the drive wheel (32) to rotate. The driven wheel (33) is coaxially connected to the synchronous pulley structure (11). The toothed belt (34) is wrapped around the drive wheel (32) and the driven wheel (33).

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