Fork pitch changing mechanism and box type shuttle vehicle

Abstract

The application relates to a fork distance changing mechanism and a box type shuttle vehicle, and belongs to the technical field of intelligent warehouse logistics. The fork distance changing mechanism is applied to the box type shuttle vehicle and comprises a driving assembly, a synchronous belt assembly and a clamping assembly. The driving assembly comprises a driving motor and a speed reducer connected with the driving motor. The synchronous belt assembly comprises a driving wheel, a driven wheel and a transmission belt sleeved on the driving wheel and the driven wheel. The output shaft of the speed reducer is connected with the driving wheel. The clamping assembly comprises a clamping plate and a clamping seat connected with each other. The clamping plate and the clamping seat clamp part of the transmission belt together, and the clamping seat is used for being connected with a movable fork. The fork distance changing mechanism and the box type shuttle vehicle provided by the application at least solve the problems that the cleaning cost of the fork distance changing mechanism is high and the fork distance changing mechanism is prone to damage in the related art.

Description

Technical Field

[0001] This application relates to the field of intelligent warehousing and logistics technology, and in particular to a fork pitch mechanism and a hopper shuttle. Background Technology

[0002] Warehousing is a crucial component of modern logistics, playing a vital role in the logistics system. Efficient and rational warehousing ensures smooth production and enables effective control and management of resources. In recent years, intelligent warehousing has significantly improved warehousing efficiency through various advanced technologies, and the adoption of flexible transmission equipment is one of the trends in achieving logistics and warehousing automation.

[0003] A fork is a component mounted on a hopper shuttle that uses its extension and retraction to pick up and place goods. In related technologies, forks typically employ a lead screw and lead screw nut mechanism, where the rotation of the lead screw moves the forks, thereby adjusting the spacing between them.

[0004] However, the fork pitch control method in related technologies is easily affected by dust and moisture, requiring frequent cleaning and lubrication, which increases maintenance costs under high-frequency operating conditions; the structure of the lead screw and lead screw nut has high rigidity and no buffer, which poses a risk of thread deformation and lead screw bending when encountering off-center loads or foreign objects. At the same time, it has high requirements for coaxiality and parallelism, and the preload needs to be repeatedly calibrated during the commissioning stage. Utility Model Content

[0005] Therefore, it is necessary to provide a fork pitch mechanism and a hopper shuttle to address the problems of high cleaning costs and easy damage of fork pitch mechanisms in related technologies.

[0006] This application provides a fork pitch changing mechanism applied to a hopper shuttle. The fork pitch changing mechanism includes a drive assembly, a timing belt assembly, and a clamping assembly. The drive assembly includes a drive motor and a reducer connected to the drive motor. The timing belt assembly includes a drive pulley, a driven pulley, and a transmission belt respectively sleeved on the drive pulley and the driven pulley. The output shaft of the reducer is connected to the drive pulley. The clamping assembly includes a clamping plate and a clamping seat connected to each other. The clamping plate and the clamping seat together clamp a portion of the transmission belt, and the clamping seat is used to connect to the moving forks.

[0007] In some embodiments, the clamping plate and the clamping seat are detachably connected.

[0008] In some embodiments, the clamping plate and the clamping seat are connected by screws or bolts.

[0009] In some embodiments, the clamping plate and the clamping seat are disposed opposite to each other along the thickness direction of the drive belt; the clamping seat includes a body portion disposed opposite to the clamping plate and two mounting portions connected to the body portion, the two mounting portions being located on both sides of the width direction of the drive belt, and the mounting portions being used to connect the moving forks.

[0010] In some embodiments, the mounting portion includes an extension connected to the main body and a mounting body disposed at one end of the extension away from the main body; the mounting body extends in a direction away from the drive belt and is provided with a mounting hole.

[0011] In some embodiments, the thickness of the extension gradually increases along the direction from the body portion to the mounting body.

[0012] In some embodiments, the surface of the clamping plate near the clamping seat is provided with a concave-convex structure, which, together with the clamping seat, clamps part of the transmission belt.

[0013] In some embodiments, the concave-convex structure is strip-shaped, each concave-convex structure extends along the width direction of the transmission belt, and multiple concave-convex structures are arranged sequentially at intervals along the length direction of the transmission belt.

[0014] In some embodiments, the fork pitch mechanism further includes a guide rail disposed on at least one side in the width direction of the drive belt, and the guide rail is configured to be slidably connected to the moving fork.

[0015] This application also provides a bin-type shuttle, which includes a fixed fork, a movable fork, and a fork pitch mechanism as provided in any of the foregoing embodiments; the fork pitch mechanism is connected to the movable fork and is used to drive the movable fork to move in a direction toward or away from the fixed fork.

[0016] The fork pitch changing mechanism and hopper shuttle provided in the embodiments of this application have at least the following beneficial effects:

[0017] By connecting the timing belt assembly to the moving fork using a clamping component, and driving the timing belt assembly to rotate reciprocally to achieve the reciprocating movement of the moving fork, the method of driving the timing belt assembly to move the moving fork by the driving component can reduce the exposure of metal parts and reduce the impact of dust and moisture in the air on the driving component. At the same time, the method of the timing belt assembly driving the moving fork can reduce the requirements for coaxiality and parallelism. Moreover, the timing belt assembly is a flexible structure, which will not affect the structure of the timing belt assembly itself when encountering off-center loads or foreign objects, which is conducive to improving the service life of the fork pitch mechanism.

[0018] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the three-dimensional structure of the fork pitch adjustment mechanism and the moving fork provided in an embodiment of this application;

[0021] Figure 2 for Figure 1 An enlarged view of part A of the fork pitch mechanism shown;

[0022] Figure 3 This is a three-dimensional structural diagram of a fork pitch mechanism provided in an embodiment of this application, after removing the guide rails.

[0023] Figure 4 for Figure 3 An enlarged view of part B of the fork pitch mechanism shown.

[0024] Explanation of reference numerals in the attached drawings: 100, fork pitch control mechanism; 10, drive assembly; 11, drive motor; 12, reducer; 20, synchronous belt assembly; 21, drive wheel; 22, driven wheel; 23, transmission belt; 30, clamping assembly; 31, clamping plate; 311, concave-convex structure; 32, clamping seat; 321, main body; 322, mounting part; 3221, extension body; 3222, mounting body; 40, guide rail;

[0025] 101. Mounting hole; 200. Moving fork. Detailed Implementation

[0026] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application 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 application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0027] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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.

[0028] Furthermore, where the term "and / or" appears, "and / or" merely describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship. Where the terms "first" and "second" appear, these terms are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" can explicitly or implicitly include at least one of those features. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0029] In this application, unless otherwise expressly 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 expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0030] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via 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. Similarly, "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.

[0031] It should be noted that if 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. If 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. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0032] Please refer to the following: Figures 1 to 4 This application provides a fork pitch changing mechanism 100, applied to a hopper shuttle (not shown). The fork pitch changing mechanism 100 includes a drive assembly 10, a timing belt assembly 20, and a clamping assembly 30. The drive assembly 10 includes a drive motor 11 and a reducer 12 connected to the drive motor 11. The timing belt assembly 20 includes a drive wheel 21, a driven wheel 22, and a transmission belt 23 respectively sleeved on the drive wheel 21 and the driven wheel 22. The output shaft of the reducer 12 is connected to the drive wheel 21. The clamping assembly 30 includes a clamping plate 31 and a clamping seat 32 connected to each other. The clamping plate 31 and the clamping seat 32 jointly clamp a portion of the transmission belt 23, and the clamping seat 32 is used to connect to the moving fork 200.

[0033] The fork pitch changing mechanism 100 is a mechanism installed in a hopper shuttle to drive the fork mechanism in the hopper shuttle to change pitch. The fork mechanism may include at least one movable fork 200 and a fixed fork. By driving the movable fork 200 to move through the fork pitch changing mechanism 100, the distance between the movable fork 200 and the fixed fork (or the distance between two movable forks 200) is changed, thereby adapting to different goods that need to be handled.

[0034] The fork pitch mechanism 100 includes a drive assembly 10, a timing belt assembly 20, and a clamping assembly 30. The drive assembly 10 is the power source of the fork pitch mechanism 100 and its function is to drive the timing belt assembly 20 to work. At the same time, the timing belt assembly 20 is connected to the moving fork 200 through the clamping assembly 30 to transmit the movement of the timing belt assembly 20 to the moving fork 200.

[0035] The drive assembly 10 includes a drive motor 11 and a reducer 12 connected to the drive motor 11. In these embodiments of the present application, the drive motor 11 and the reducer 12 can be separate structures, that is, the output shaft of the drive motor 11 is connected to the reducer 12 during the assembly stage of the fork pitch mechanism 100; or, in some embodiments, the reducer 12 and the drive motor 11 can be pre-packaged into an integral structure to form a "geared motor", thereby improving the structural consistency between the reducer 12 and the drive motor 11.

[0036] The reducer 12 functions to reduce the speed of the drive motor 11 and amplify its torque, acting as a power transmission component. It converts the high-speed, low-torque output of the drive motor 11 into the low-speed, high-torque output required by the synchronous belt assembly 20, enabling the synchronous belt assembly 20 to drive the larger, more massive moving forks 200 in reciprocating motion.

[0037] In the timing belt assembly 20, the drive wheel 21 is connected to the output shaft of the reducer 12 to rotate under the drive of the drive assembly 10, thereby driving the transmission belt 23 to rotate between the drive wheel 21 and the driven wheel 22. That is, the drive assembly 10 and the timing belt assembly 20 together form the drive part of the fork pitch mechanism 100, which is used to jointly drive the moving fork 200 to move toward or away from the fixed fork.

[0038] In these embodiments of this application, the moving fork 200 is driven to reciprocate by rotating the transmission belt 23 via the drive motor 11 and reducer 12, which reduces the exposure of metal components in the drive unit. This further reduces the impact of moisture and dust in the air on the drive unit (in related technologies, the lead screw and nut mechanism is significantly affected by moisture and dust). Simultaneously, the transmission belt 23 has a weaker guiding and limiting effect on the moving fork 200. Consequently, when the cargo is unevenly loaded during operation of the hopper shuttle, the force generated by the cargo deflection is easily absorbed and corrected by the flexible synchronous belt assembly 20, thus minimizing the impact on the structure and increasing reliability.

[0039] The clamping assembly 30 connects the moving fork 200 to the drive belt 23 so that the moving fork 200 can reciprocate with the drive belt 23.

[0040] The clamping assembly 30 includes a clamping plate 31 and a clamping seat 32 connected to each other. The clamping plate 31 and the clamping seat 32 together clamp a portion of the transmission belt 23, and the clamping seat 32 is used to connect with the moving fork 200. That is, the clamping plate 31 and the clamping seat 32 together clamp the transmission belt 23 so that the clamping assembly 30 itself can move with the transmission belt 23. At the same time, the clamping seat 32 is connected to the moving fork 200 so that the movement state of the clamping assembly 30 and the moving fork 200 is fixed, so that the moving fork 200 can reciprocate under the drive of the transmission belt 23.

[0041] The connection between the clamping plate 31 and the clamping seat 32 can be a fixed connection by bonding, welding or even integral molding; or it can be a snap-fit ​​connection or a connection by connectors (screws, bolts), which can be freely selected according to the needs.

[0042] According to the fork pitch mechanism 100 provided in the embodiments of this application, the timing belt assembly 20 is connected to the moving fork 200 by setting a clamping assembly 30, and the moving fork 200 is moved back and forth by driving the timing belt assembly 20 to rotate by the drive assembly 10. The way in which the drive assembly 10 drives the timing belt assembly 20 to move the moving fork 200 can reduce the exposure of metal parts and reduce the impact of dust and moisture in the air on the drive assembly 10. At the same time, the way in which the timing belt assembly 20 drives the moving fork 200 can reduce the requirements for coaxiality and parallelism. Moreover, the timing belt assembly 20 is a flexible structure, and it will not affect the structure of the timing belt assembly 20 itself when encountering off-center loads or foreign objects, which is conducive to improving the service life of the fork pitch mechanism 100.

[0043] In some embodiments, the clamping plate 31 and the clamping seat 32 are detachably connected.

[0044] In these embodiments of this application, the clamping plate 31 and the clamping seat 32 can be separately shaped during the forming stage and then assembled together during the installation stage to clamp the transmission belt 23 together. This improves the maintainability of the fork pitch mechanism 100 and allows for quick maintenance or parts replacement by disassembling the clamping plate 31 and the clamping seat 32.

[0045] In some embodiments, the clamping plate 31 and the clamping seat 32 are connected by screws or bolts. In this way, during the installation and removal of the clamping plate 31 and the clamping seat 32, the operator only needs a screwdriver to quickly install and remove the progressive component 30, which helps to further improve the efficiency of the installation and removal of the clamping component 30 from the timing belt component 20 or the moving fork 200.

[0046] In some embodiments, the clamping plate 31 and the clamping seat 32 are disposed opposite to each other along the thickness direction of the transmission belt 23; the clamping seat 32 includes a body portion 321 disposed opposite to the clamping plate 31 and two mounting portions 322 connected to the body portion 321, the two mounting portions 322 being located on both sides of the width direction of the transmission belt 23 respectively, and the mounting portions 322 being used to connect the moving fork 200.

[0047] The clamping plate 31 and the clamping seat 32 are arranged opposite to each other along the thickness direction of the transmission belt 23 so as to clamp the transmission belt 23 together along the thickness direction of the transmission belt 23.

[0048] The clamping seat 32 includes a body portion 321 disposed opposite to the clamping plate 31, and two mounting portions 322 connected to the body portion 321. The body portion 321 is the part of the clamping seat 32 that, together with the clamping plate 31, clamps the drive belt 23, and the mounting portions 322 are the parts of the clamping seat 32 that are used to connect to the moving fork 200.

[0049] The connection between the body part 321 and the mounting part 322 can be implemented by welding or integral molding to improve the structural consistency between the body part 321 and the mounting part 322, thereby improving the reliability of the clamping assembly 30 in connecting the drive belt 23 and the moving fork 200.

[0050] The two mounting parts 322 are located on both sides of the width direction of the transmission belt 23, so that the clamping seat 32 transmits the force evenly to the moving fork 200 in the moving direction of the transmission belt 23, which can further improve the reliability of the moving fork 200 moving under the drive of the synchronous belt assembly 20.

[0051] The mounting part 322 is used to connect the moving fork 200. In some embodiments, the mounting part 322 and the moving fork 200 are connected by a detachable connection through a snap, slot or connector. Alternatively, in some embodiments, the mounting part 322 and the moving fork 200 may be fixedly connected by welding, integral molding or other methods.

[0052] In some embodiments, the mounting portion 322 includes an extension 3221 connected to the main body 321 and a mounting body 3222 disposed at one end of the extension 3221 away from the main body 321; the mounting body 3222 bends and extends in a direction away from the transmission belt 23, and the mounting body 3222 is provided with a mounting hole 101.

[0053] Mounting body 3222 is the component in mounting part 322 that is actually used to connect with moving fork 200, and extension body 3221 is the component that connects mounting body 3222 to body part 321.

[0054] Mounting body 3222 bends and extends in the direction away from the drive belt 23 to provide more space for connecting to the moving fork 200. Mounting body 3222 is provided with mounting holes 101 so that mounting body 3222 and moving fork 200 can be connected by connectors (screws, bolts) to improve disassembly and assembly efficiency and reduce difficulty when the fork pitch mechanism 100 malfunctions or needs maintenance.

[0055] In some embodiments, the thickness of the extension 3221 gradually increases along the direction from the body portion 321 to the mounting body 3222.

[0056] The thickness of the extension body 3221 gradually increases along the direction from the main body 321 to the mounting body 3222, so that the thickness of the end of the extension body 3221 near the main body 321 is kept close to that of the main body 321. This helps to reduce the risk of interference when the extension body 3221 is connected to the clamping plate 31 and the main body 321. At the same time, the thickness of the extension body 3221 gradually increases along the direction away from the main body 321, which can strengthen the structural strength of the extension body 3221 and further improve the reliability of the clamping assembly 30 in connecting the moving fork 200 to the drive belt 23.

[0057] In some embodiments, the surface of the clamping plate 31 near the clamping seat 32 is provided with a concave-convex structure 311, which works in conjunction with the clamping seat 32 to clamp part of the transmission belt 23.

[0058] The function of the concave-convex structure 311 is to increase the friction between the clamping plate 31 and the clamping seat 32. By setting the surface of the clamping plate 31 near the clamping seat 32 as the concave-convex structure 311, the pressure exerted by the concave-convex structure 311 on the transmission belt 23 after the clamping plate 31 is clamped to the clamping seat 32 can be increased, thereby reducing the risk of slippage between the transmission belt 23 and the clamping plate 31, which is conducive to improving the accuracy of adjusting the position of the moving fork 200 driven by the synchronous belt assembly 20.

[0059] The concave-convex structure 311, together with the clamping seat 32, clamps part of the transmission belt 23. In some embodiments, the concave-convex structure 311 can also be provided on the surface of the clamping seat 32 (body part 321) near the clamping plate 31, so that the two concave-convex structures 311 on the opposing surfaces of the clamping plate 31 and the clamping seat 32 match each other and jointly improve the clamping force between the clamping assembly 30 and the transmission belt 23.

[0060] In some embodiments, the concave-convex structure 311 is strip-shaped, each concave-convex structure 311 extends along the width direction of the transmission belt 23, and multiple concave-convex structures 311 are arranged sequentially at intervals along the length direction of the transmission belt 23.

[0061] Multiple strip-shaped concave-convex structures 311 are spaced apart in the direction where sliding may occur between the clamping plate 31 and the transmission belt 23, further enhancing the clamping force between the clamping assembly 30 and the transmission belt 23. At the same time, the strip-shaped concave-convex structures 311 are easy to process, which helps to improve the processing and forming efficiency of the clamping plate 31.

[0062] In some embodiments, the fork pitch mechanism 100 further includes a guide rail 40 disposed on at least one side of the drive belt 23 in the width direction, and the guide rail 40 is configured to be slidably connected to the moving fork 200.

[0063] The guide rail 40 serves to correct the moving direction of the moving fork 200, enabling it to reciprocate in a fixed direction under the drive of the drive assembly 10 and the timing belt assembly 20. In these embodiments of the present application, the drive assembly 10 and the timing belt assembly 20 jointly provide power, and the guide rail 40 guides the moving direction of the moving fork 200. Since the timing belt assembly 20 is a flexible structure, a slight deviation in the installation angle between the timing belt assembly 20 and the guide rail 40 is permissible, thereby reducing the requirements for coaxiality and parallelism. Furthermore, it does not affect the structure of the timing belt assembly 20 itself when encountering off-center loads or foreign objects, which helps to extend the service life of the fork pitch mechanism 100.

[0064] This application embodiment also provides a bin-type shuttle, which includes a fixed fork, a movable fork 200, and a fork pitch mechanism 100 as provided in any of the foregoing embodiments; the fork pitch mechanism 100 is connected to the movable fork 200 and is used to drive the movable fork 200 to move in a direction toward or away from the fixed fork.

[0065] 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.

[0066] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A fork pitch changing mechanism, applied to a hopper shuttle, characterized in that, include: A drive assembly, including a drive motor and a reducer connected to the drive motor; A synchronous belt assembly includes a drive pulley, a driven pulley, and a transmission belt respectively fitted onto the drive pulley and the driven pulley; the output shaft of the reducer is connected to the drive pulley. The clamping assembly includes a clamping plate and a clamping seat connected together, the clamping plate and the clamping seat together clamping a portion of the drive belt, and the clamping seat being used to connect to a moving fork.

2. The fork pitch changing mechanism according to claim 1, characterized in that, The clamping plate and the clamping seat are detachably connected.

3. The fork pitch changing mechanism according to claim 2, characterized in that, The clamping plate and the clamping seat are connected by screws or bolts.

4. The fork pitch changing mechanism according to claim 1, characterized in that, The clamping plate and the clamping seat are arranged opposite each other along the thickness direction of the transmission belt; The clamping seat includes a main body portion disposed opposite to the clamping plate, and two mounting portions connected to the main body portion. The two mounting portions are respectively located on both sides of the transmission belt width direction, and the mounting portions are used to connect the moving fork.

5. The fork pitch changing mechanism according to claim 4, characterized in that, The mounting portion includes an extension body connected to the main body and a mounting body disposed at one end of the extension body away from the main body. The mounting body extends in a direction away from the transmission belt and is provided with mounting holes.

6. The fork pitch changing mechanism according to claim 5, characterized in that, The thickness of the extension gradually increases along the direction from the main body to the mounting body.

7. The fork pitch changing mechanism according to claim 1, characterized in that, The clamping plate has a concave-convex structure on the side near the clamping seat, and the concave-convex structure works with the clamping seat to clamp part of the transmission belt.

8. The fork pitch changing mechanism according to claim 7, characterized in that, The convex and concave structures are strip-shaped, each extending along the width direction of the transmission belt, and multiple convex and concave structures are arranged at intervals along the length direction of the transmission belt.

9. The fork pitch changing mechanism according to any one of claims 1 to 8, characterized in that, The fork pitch mechanism further includes a guide rail disposed on at least one side of the transmission belt in the width direction, and the guide rail is configured to be slidably connected to the moving fork.

10. A hopper-type shuttle car, characterized in that, Includes fixed forks, movable forks, and fork pitch control mechanisms as described in any one of claims 1 to 9; The fork pitch mechanism is connected to the movable fork and is used to drive the movable fork to move in a direction toward or away from the fixed fork.

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