coal bunker

Abstract

The utility model provides a kind of coal bunker, coal bunker includes: support frame, including cylinder, cylinder has accommodating cavity, accommodating cavity along the two ends of extension direction respectively with coal inlet and coal outlet;Bottom plate is set at coal outlet, bottom plate can open or close coal outlet, to adjust the coal output of coal outlet;Driving assembly is set on support frame, driving assembly includes telescopic piece and transmission structure, telescopic piece has connecting end and telescopic end, telescopic end can be moved relative to connecting end, transmission structure is set between telescopic end and bottom plate, transmission structure is driven connection with telescopic end, to drive telescopic end can be moved relative to connecting end, to drive bottom plate relative support frame rotation. Through the technical scheme provided by the utility model, the problem that the moving efficiency of the whole device is low can be solved, that the coal bunker is mostly moved to the required position by artificial or special handling device in underground coal bunker.

Description

Technical Field

[0001] This utility model relates to the field of underground coal bunker technology, and more specifically, to a coal bunker. Background Technology

[0002] In the coal mining industry, underground coal storage and transportation systems are crucial for ensuring the efficient and safe operation of coal production. As a key component of this system, the performance and structural design of the underground coal bunker directly affect coal storage efficiency, transportation smoothness, and the safety of the entire mining operation.

[0003] However, most existing underground coal bunkers are moved to the required location manually or by specialized handling equipment, resulting in low overall mobility of the equipment. Utility Model Content

[0004] This utility model provides a coal bunker to solve the problem that in the prior art, most underground coal bunkers are moved to the required location manually or by special handling equipment, resulting in low mobility of the entire device.

[0005] This utility model provides a coal bunker, comprising: a support frame including a cylindrical body, the cylindrical body being mounted on the support frame, the support frame being disposed on the outer periphery of the cylindrical body, the cylindrical body having a receiving cavity, and the receiving cavity having a coal inlet and a coal outlet at its two ends along its extension direction; a bottom plate disposed at the coal outlet and rotatably connected to the support frame, the rotation axis of the bottom plate forming an angle with the extension direction of the receiving cavity, the bottom plate being able to open or close the coal outlet to adjust the coal discharge rate; and a drive assembly disposed on the support frame, the drive assembly including a telescopic component and a transmission structure, the telescopic component having a connecting end and a telescopic end, the telescopic end being able to move relative to the connecting end, the transmission structure being disposed between the telescopic end and the bottom plate, the transmission structure being drivenly connected to the telescopic end to drive the telescopic end to move relative to the connecting end, thereby driving the bottom plate to rotate relative to the support frame.

[0006] Further, the telescopic component includes: a screw located on the side of the base plate away from the receiving cavity, the screw having a first end and a second end disposed opposite to each other, the first end being drivenly connected to the transmission structure and forming a telescopic end, the second end being movably mounted on the support frame, the movement direction of the screw forming an angle with the extension direction of the receiving cavity and the rotation axis of the base plate respectively; a nut rotatably mounted on the support frame, the nut being sleeved on the outer circumference of the second end and threadedly connected to the second end, the rotation axis of the nut being the same as the movement direction of the screw, the nut forming a connecting end; and an anti-rotation component disposed between the first end and the transmission structure, the anti-rotation component being used to restrict the relative rotation of the screw and the support frame so that the screw moves relative to the support frame.

[0007] Furthermore, the base plate has a rotating end and a free end. The rotating end is rotatably connected to the support frame, and the telescopic end of the telescopic component is driven to be connected to the free end of the base plate to drive the base plate to rotate. The driving assembly includes a driving structure and multiple telescopic components. The multiple telescopic components are spaced apart on the support frame, and the multiple telescopic components cooperate with each other to drive the base plate to rotate. The driving structure is set on the support frame, and the driving structure is driven to be connected to the multiple telescopic components to drive the telescopic end to move relative to the connecting end.

[0008] Furthermore, the drive structure is located near the second end and includes: a motor mounted on a support frame, the motor having a drive end; a drive wheel, the drive end being driven to rotate the drive wheel, the extension direction of the rotation axis of the drive wheel being the same as the extension direction of the rotation axis of the nut; multiple driven wheels, each corresponding to a multiple telescopic component, the driven wheels being sleeved on the outer circumference of the second end and fixedly connected to the nut, one of the driven wheels meshing with the drive wheel; and a transmission belt sleeved on the multiple driven wheels, the transmission belt being able to mesh with the driven wheels.

[0009] Furthermore, the transmission structure includes: a slide rail, disposed on the side of the base plate away from the receiving cavity, the slide rail extending from the free end of the base plate toward the rotating end, and the extension direction of the projection of the slide rail along the extension direction of the receiving cavity is the same as the extension direction of the projection of the screw; a movable block, capable of moving along the slide rail, one end of the movable block being slidably connected to the slide rail, and the other end of the movable block being hinged to the first end via a rotating shaft, the rotation axis of the rotating shaft having an angle with the axis of the screw, and the rotating shaft forming an anti-rotation element.

[0010] Furthermore, the coal bunker also includes a limiting structure, which is installed on the support frame and is connected to the rotating end drive. The limiting structure is used to limit the rotation range of the bottom plate.

[0011] Furthermore, the limiting structure includes: two positioning shafts, respectively disposed at both ends of the rotating end along its rotation axis; two positioning plates, disposed on the support frame, the two positioning plates being respectively disposed in correspondence with the two positioning shafts, the positioning plates having annular limiting holes, the ends of the positioning shafts passing through the annular limiting holes, the ends of the positioning shafts being able to move along the annular limiting holes and engaging with the ends of the annular limiting holes along the extension direction to limit the rotation range of the rotating end.

[0012] Furthermore, the cylinder includes a main body and an extension. The coal inlet is located at one end of the main body, and the extension is located at the end of the main body away from the coal inlet. The end of the extension away from the receiving cavity forms a coal outlet. When the bottom plate closes the coal outlet, the bottom plate abuts against the extension, and the bottom plate, the extension, and the main body cooperate to form a receiving cavity.

[0013] Furthermore, there are two bottom plates, which are arranged opposite each other at the coal outlet. The two bottom plates cooperate to open or close the coal outlet. There are two sets of drive components, which are respectively arranged one-to-one with the two bottom plates. The cylinder includes two baffles, which are arranged opposite each other at the end of the main body away from the coal inlet. The extension direction of the baffles is the same as the extension direction of the receiving cavity. The ends of the two baffles away from the receiving cavity cooperate to form the coal outlet. When the bottom plate closes the coal outlet, the bottom plate abuts against the baffles. The abutment surface between the baffles and the bottom plate is an inclined surface. The distance between the inclined surface and the coal inlet gradually increases in the direction away from the main body. The baffles form an extension.

[0014] Furthermore, the traveling part includes a telescopic part and a rolling part. The telescopic part is located at the bottom of the support frame, and the rolling part is located at the end of the telescopic part away from the coal inlet. The telescopic part and the rolling part are driven to extend out of the support frame to move the support frame, or to retract into the support frame.

[0015] By applying the technical solution of this utility model, dynamic adjustment of the coal outlet is achieved through the rotating connection between the base plate and the support frame. Operators can control the coal output flow rate according to actual needs, improving the flexibility and efficiency of coal distribution. The design of the traveling mechanism gives the support frame excellent mobility, allowing for quick position adjustments as needed, thus improving the maneuverability and flexibility of the coal conveying system. The telescopic movement of the telescopic component is converted into the rotation of the base plate via a transmission structure, enabling the adjustment of the base plate's opening and closing without manual intervention, reducing the labor intensity of operators and enhancing the intelligence level of the equipment. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0017] Figure 1 This invention provides a schematic diagram of the structure of a coal bunker from one perspective.

[0018] Figure 2 This invention provides a schematic diagram of the coal bunker structure from another perspective.

[0019] Figure 3 This invention provides a schematic diagram of the coal bunker from a bottom-view perspective.

[0020] Figure 4 A partial structural schematic diagram of the drive structure provided by this utility model is shown;

[0021] Figure 5 A partial structural schematic diagram of the drive structure provided by this utility model is shown;

[0022] Figure 6 A partial structural schematic diagram of the limiting structure provided by this utility model is shown.

[0023] The above figures include the following reference numerals:

[0024] 10. Support frame; 101. Receiving cavity; 102. Coal inlet;

[0025] 20. Base plate; 21. Rotating end; 22. Free end;

[0026] 31. Telescopic component; 311. Screw; 3111. First end; 3112. Second end; 312. Nut;

[0027] 41. Motor; 42. Drive pulley; 43. Driven pulley; 44. Drive belt;

[0028] 51. Slide rail; 52. Moving block;

[0029] 60. Shaft;

[0030] 71. Positioning shaft; 72. Positioning plate; 721. Annular limiting hole;

[0031] 80. Cylinder body; 81. Baffle;

[0032] 90. Walking part; 91. Telescopic part; 92. Rolling part. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0034] like Figures 1 to 6As shown, this embodiment of the utility model provides a coal bunker, which includes a support frame 10, a bottom plate 20, a drive assembly, and a traveling part 90. The support frame 10 includes a cylindrical body 80, which is mounted on the support frame 10 and disposed on the outer periphery of the cylindrical body 80. The cylindrical body 80 has a receiving cavity 101, with a coal inlet 102 and a coal outlet at both ends along its extending direction. The bottom plate 20 is disposed at the coal outlet and rotatably connected to the support frame 10. The rotation axis of the bottom plate 20 forms an angle with the extending direction of the receiving cavity 101. The bottom plate 20 can open or close the coal outlet to adjust the coal discharge rate. The drive assembly is mounted on the support frame 10. The drive assembly includes a telescopic member 31 and a transmission structure. The telescopic member 31 has a connecting end and a telescopic end. The telescopic end can move relative to the connecting end. The transmission structure is located between the telescopic end and the base plate 20. The transmission structure is driven to the telescopic end to drive the telescopic end to move relative to the connecting end, thereby driving the base plate 20 to rotate relative to the support frame 10.

[0035] By applying the technical solution of this utility model, the dynamic adjustment of the coal outlet is achieved through the rotating connection between the base plate 20 and the support frame 10. Operators can control the coal output flow according to actual needs, improving the flexibility and efficiency of coal distribution. The design of the traveling part 90 gives the support frame 10 good mobility, allowing for quick position adjustment according to production needs, thus improving the mobility and flexibility of the coal conveying system. The telescopic movement of the telescopic component 31 is converted into the rotation of the base plate 20 through the transmission structure, enabling the adjustment of the base plate opening and closing without manual intervention, reducing the labor intensity of operators and improving the intelligence level of the equipment.

[0036] like Figure 4As shown, the telescopic component 31 includes a screw 311, a nut 312, and an anti-rotation component. The screw 311 is located on the side of the base plate 20 away from the receiving cavity 101. The screw 311 has a first end 3111 and a second end 3112 oppositely disposed. The first end 3111 is driven and connected to the transmission structure, forming the telescopic end. The second end 3112 is movably mounted on the support frame 10. The direction of movement of the screw 311 forms angles with both the extension direction of the receiving cavity 101 and the rotation axis of the base plate 20. The nut 312 is rotatably mounted on the support frame 10. The nut 312 is sleeved on the outer circumference of the second end 3112 and threadedly connected to it. The rotation axis of the nut 312 is the same as the direction of movement of the screw 311, forming the connecting end. An anti-rotation element is positioned between the first end 3111 and the transmission structure. This element restricts the relative rotation of the screw 311 and the support frame 10, allowing the screw 311 to move relative to the support frame 10. The combination of the screw 311 and nut 312, due to its simple and efficient transmission characteristics, facilitates routine maintenance and repair. When adjusting the opening angle of the base plate 20, simply adjusting the position of the nut 312 easily changes the extension / retraction state of the screw 311, eliminating the need for complex disassembly and greatly simplifying equipment debugging and maintenance.

[0037] like Figure 1 As shown, the base plate 20 has a rotating end 21 and a free end 22. The rotating end 21 is rotatably connected to the support frame 10. The telescopic end of the telescopic member 31 is driven to the free end 22 of the base plate 20 to drive the base plate 20 to rotate. The drive assembly includes a drive structure and multiple telescopic members 31, which are spaced apart on the support frame 10 and cooperate with each other to drive the base plate 20 to rotate. The drive structure is mounted on the support frame 10 and is driven to the multiple telescopic members 31 to drive the telescopic end to move relative to the connecting end. The drive assembly includes multiple spaced telescopic members 31, which ensures that the base plate 20 is subjected to a uniformly distributed driving force when rotating. Compared with single-point drive, multi-point coordinated drive can more effectively disperse stress, reduce the risk of wear and deformation of the base plate 20 during frequent opening and closing, and ensure the stability and reliability of the base plate 20 for long-term use.

[0038] Specifically, the drive structure is located near the second end 3112 and includes a motor 41, a driving wheel 42, multiple driven wheels 43, and a transmission belt 44. The motor 41 is mounted on the support frame 10 and has a drive end. The drive end of the driving wheel 42 is driven to rotate, and the extension direction of the rotation axis of the driving wheel 42 is the same as the extension direction of the rotation axis of the nut 312. The multiple driven wheels 43 are respectively arranged one-to-one with multiple telescopic members 31, and are sleeved on the outer periphery of the second end 3112 and fixedly connected to the nut 312. One driven wheel 43 meshes with the driving wheel 42. The transmission belt 44 is sleeved on the multiple driven wheels 43 and can mesh with the driven wheels 43. Using a motor 41 as the main drive source, the rotational kinetic energy of the motor 41 is efficiently transmitted to the nuts 312 of multiple telescopic parts 31 through a transmission system consisting of a drive wheel 42, a driven wheel 43 and a transmission belt 44. This not only enables precise adjustment of the base plate 20 angle, but also achieves unified control of multi-level linkage, simplifies the operation process and improves the coordination and consistency of the adjustment process.

[0039] like Figure 4 As shown, the transmission structure includes a slide rail 51 and a moving block 52. The slide rail 51 is located on the side of the base plate 20 away from the receiving cavity 101. The slide rail 51 extends from the free end 22 of the base plate 20 towards the rotating end 21, and the extension direction of the projection of the slide rail 51 along the extension direction of the receiving cavity 101 is the same as the extension direction of the projection of the screw 311. The moving block 52 can move along the slide rail 51. One end of the moving block 52 is slidably connected to the slide rail 51, and the other end of the moving block 52 is hinged to the first end 3111 via a rotating shaft 60. The rotation axis of the rotating shaft 60 forms an angle with the axis of the screw 311, and the rotating shaft 60 forms an anti-rotation element. The slidable connection between the slide rail 51 and the moving block 52 ensures smooth movement of the base plate 20 during adjustment. The movable block 52 is hinged to the first end 3111 via the rotating shaft 60, forming a sturdy and reliable anti-rotation component. This effectively restricts the relative rotation between the screw 311 and the support frame 10, ensuring that the linear motion of the telescopic component 31 is converted into the angular change of the base plate 20.

[0040] The coal bunker also includes a limiting structure mounted on the support frame 10. This limiting structure is driven and connected to the rotating end 21, and is used to restrict the rotation range of the bottom plate 20. The limiting structure effectively prevents excessive rotation of the bottom plate 20 during adjustment, avoiding coal leakage or equipment damage caused by improper positioning of the bottom plate 20. By limiting the rotation range of the bottom plate 20, the limiting structure reduces the load on the equipment under extreme operating conditions, decreasing wear and failure rates of critical components.

[0041] like Figure 6As shown, the limiting structure includes two positioning shafts 71 and two positioning plates 72. The two positioning shafts 71 are respectively located at both ends of the rotating end 21 along its rotation axis. The two positioning plates 72 are mounted on the support frame 10, each corresponding to one of the two positioning shafts 71. Each positioning plate 72 has an annular limiting hole 721. The end of each positioning shaft 71 passes through the annular limiting hole 721, allowing it to move along the annular limiting hole 721 and engage with the end of the annular limiting hole 721 along its extension direction, thus limiting the rotation range of the rotating end 21. The limiting structure, through the engagement of the positioning shafts 71 and the annular limiting holes 721 on the positioning plates 72, precisely limits the rotation range of the base plate 20, effectively preventing accidental over-rotation of the base plate 20 during operation. This reduces the risk of safety accidents caused by operational errors or loss of control, and also avoids deviations in coal flow control due to unstable position of the base plate 20, improving the accuracy and reliability of the coal conveying process.

[0042] like Figures 1 to 3 As shown, the cylinder 80 includes a main body and an extension. A coal inlet 102 is located at one end of the main body, and the extension is located at the end of the main body away from the coal inlet 102. The end of the extension away from the receiving cavity 101 forms a coal outlet. When the bottom plate 20 closes the coal outlet, the bottom plate 20 abuts against the extension, and the bottom plate 20, extension, and main body cooperate to form the receiving cavity 101. This design allows the coal bunker to form a complete receiving cavity 101 in the closed state, providing sufficient storage space for coal. In the open state, the cooperation between the bottom plate 20 and the extension smoothly guides the coal to flow out from the coal outlet, optimizing coal storage and flow, and improving the storage and transportation efficiency of the coal bunker.

[0043] The system includes two bottom plates 20, which are positioned opposite each other at the coal outlet. These two bottom plates cooperate to open or close the coal outlet. Two sets of drive components are provided, each corresponding to one of the two bottom plates 20. The cylinder 80 includes two baffles 81, which are positioned opposite each other at the end of the body away from the coal inlet 102. The extension direction of the baffles 81 is the same as the extension direction of the receiving cavity 101. The ends of the two baffles 81 away from the receiving cavity 101 cooperate to form the coal outlet. When the bottom plate 20 closes the coal outlet, the bottom plate 20 abuts against the baffles 81. The contact surface between the baffles 81 and the bottom plate 20 is an inclined surface, and the distance between the inclined surface and the coal inlet 102 gradually increases in the direction away from the body. The baffles 81 form an extension. This configuration allows the side plates to guide the coal flow when the bottom plate 20 opens the coal outlet, and also reduces dust and splashing during coal flow.

[0044] Specifically, the support frame 10 includes multiple interconnected horizontal support plates and vertical support frames. The multiple horizontal support plates are spaced apart along the vertical direction. The multiple horizontal support plates and vertical support frames cooperate to form an inner cavity and an outer cavity. The cylinder 80 and the bottom plate 20 are located in the inner cavity, which is used for coal flow. The walking part 90 and part of the drive assembly are located in the outer cavity to avoid being blocked by dust generated during coal flow.

[0045] like Figure 1 As shown, the traveling part 90 includes a telescopic part 91 and a rolling part 92. The telescopic part 91 is located at the bottom of the support frame 10, and the rolling part 92 is located at the end of the telescopic part 91 away from the coal inlet 102. The telescopic part 91 and the rolling part 92 are drivenly connected. The telescopic part 91 can drive the rolling part 92 to extend out of the support frame 10 to move the support frame 10, or retract it into the support frame 10. The traveling part 90 uses a combination of the telescopic part 91 and the rolling part 92, which allows the coal bunker to move to the required position without relying on external machinery. This design improves the mobility of the coal bunker in underground roadways, reduces the need for additional transportation equipment, and improves operational efficiency. The telescopic part 91 can drive the rolling part 92 to extend or retract, so that when the traveling function is not used, the rolling part 92 can be stored inside the support frame 10, reducing the space occupied by the equipment and avoiding interference with other operations in the roadway due to excessive equipment size. At the same time, the rolling part 92 in the stored state reduces the risk of the coal bunker tipping over during static operations, improving operational safety.

[0046] Specifically, the rolling part 92 is a roller, and the telescopic part 91 is a telescopic cylinder.

[0047] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0048] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0049] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms 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 on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0050] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0051] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0052] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A coal bunker, characterized in that, The coal bunker includes: The support frame (10) includes a cylinder (80) through which the cylinder (80) passes. The support frame (10) is arranged on the outer periphery of the cylinder (80). The cylinder (80) has a receiving cavity (101). The receiving cavity (101) has a coal inlet (102) and a coal outlet at both ends along the extension direction. A bottom plate (20) is provided at the coal outlet and is rotatably connected to the support frame (10). The rotation axis of the bottom plate (20) has an angle with the extension direction of the receiving cavity (101). The bottom plate (20) can open or close the coal outlet to adjust the coal output of the coal outlet. A drive assembly is provided on the support frame (10). The drive assembly includes a telescopic member (31) and a transmission structure. The telescopic member (31) has a connecting end and a telescopic end. The transmission structure is provided between the telescopic end and the base plate (20). The transmission structure is drivenly connected to the telescopic end to drive the telescopic end to move relative to the connecting end, thereby driving the base plate (20) to rotate relative to the support frame (10). The walking part (90) is located at the bottom of the support frame (10) and is used to move the position of the support frame (10).

2. The coal bin of claim 1, wherein The telescopic component (31) includes: A screw (311) is located on the side of the base plate (20) away from the receiving cavity (101). The screw (311) has a first end (3111) and a second end (3112) arranged opposite to each other. The first end (3111) is driven to be connected to the transmission structure and forms the telescopic end. The second end (3112) is movably inserted on the support frame (10). The moving direction of the screw (311) has an angle with the extending direction of the receiving cavity (101) and the rotation axis of the base plate (20). A nut (312) is rotatably mounted on the support frame (10). The nut (312) is sleeved on the outer periphery of the second end (3112) and threadedly connected to the second end (3112). The rotation axis of the nut (312) is the same as the movement direction of the screw (311). The nut (312) forms the connecting end. An anti-rotation element is disposed between the first end (3111) and the transmission structure. The anti-rotation element is used to restrict the relative rotation of the screw (311) and the support frame (10) so that the screw (311) can move relative to the support frame (10).

3. The coal bunker according to claim 2, characterized in that, The base plate (20) has a rotating end (21) and a free end (22). The rotating end (21) is rotatably connected to the support frame (10). The telescopic end of the telescopic member (31) is driven to be connected to the free end (22) of the base plate (20) to drive the base plate (20) to rotate. The drive assembly includes a drive structure and a plurality of telescopic members (31). The plurality of telescopic members (31) are spaced apart on the support frame (10), and the plurality of telescopic members (31) cooperate with each other to drive the base plate (20) to rotate. The drive structure is disposed on the support frame (10), and the drive structure is driven to be connected to the plurality of telescopic members (31) respectively, so as to drive the telescopic end to move relative to the connecting end.

4. The coal bin of claim 3, wherein, The driving structure is disposed near the second end (3112), and the driving structure includes: A motor (41) is mounted on the support frame (10), and the motor (41) has a drive end; The driving end is connected to the driving wheel (42) to drive the driving wheel (42) to rotate. The extension direction of the rotation axis of the driving wheel (42) is the same as the extension direction of the rotation axis of the nut (312). Multiple driven wheels (43) are respectively arranged in correspondence with multiple telescopic components (31). The driven wheels (43) are sleeved on the outer periphery of the second end (3112) and fixedly connected to the nut (312). One of the driven wheels (43) meshes with the driving wheel (42). A drive belt (44) is fitted on a plurality of driven pulleys (43), and the drive belt (44) can mesh with the driven pulleys (43).

5. The coal bin of claim 3, wherein, The transmission structure includes: A slide rail (51) is disposed on the side of the base plate (20) away from the receiving cavity (101). The slide rail (51) extends from the free end (22) of the base plate (20) toward the rotating end (21). Along the extension direction of the receiving cavity (101), the extension direction of the projection of the slide rail (51) is the same as the extension direction of the projection of the screw (311). The movable block (52) is movable along the slide rail (51). One end of the movable block (52) is slidably connected to the slide rail (51), and the other end of the movable block (52) is hinged to the first end (3111) via a rotating shaft (60). The rotation axis of the rotating shaft (60) has an angle with the axis of the screw (311), and the rotating shaft (60) forms the anti-rotation element.

6. The coal bunker according to claim 3, characterized in that, The coal bunker also includes a limiting structure, which is installed on the support frame (10) and driven to the rotating end (21). The limiting structure is used to limit the rotation range of the bottom plate (20).

7. The coal bin of claim 6, wherein, The limiting structure includes: Two positioning shafts (71) are respectively disposed at both ends of the rotating end (21) along its rotation axis; Two positioning plates (72) are disposed on the support frame (10). The two positioning plates (72) are respectively disposed in correspondence with the two positioning shafts (71). The positioning plates (72) have annular limiting holes (721). The end of the positioning shaft (71) passes through the annular limiting hole (721). The end of the positioning shaft (71) can move along the annular limiting hole (721) and engage with the end of the annular limiting hole (721) along the extension direction to limit the rotation range of the rotating end (21).

8. The coal bunker according to claim 1, characterized in that, The cylinder (80) includes a main body and an extension. The coal inlet (102) is located at one end of the main body, and the extension is located at the end of the main body away from the coal inlet (102). The end of the extension away from the receiving cavity (101) forms the coal outlet. When the bottom plate (20) closes the coal outlet, the bottom plate (20) abuts against the extension, and the bottom plate (20), the extension and the body cooperate to form the receiving cavity (101).

9. The coal bunker according to claim 8, characterized in that, The bottom plate (20) has two, and the two bottom plates (20) are arranged opposite to each other at the coal outlet. The two bottom plates (20) cooperate to open or close the coal outlet. The drive assembly has two sets, and the two sets of drive assemblies are respectively arranged one-to-one with the two bottom plates (20). The cylinder (80) includes two baffles (81), which are disposed opposite to each other at the end of the main body away from the coal inlet (102). The extension direction of the baffles (81) is the same as the extension direction of the receiving cavity (101). The ends of the two baffles (81) away from the receiving cavity (101) cooperate to form the coal outlet. When the bottom plate (20) closes the coal outlet, the bottom plate (20) abuts against the baffles (81). The abutting surface of the baffles (81) and the bottom plate (20) is an inclined surface. The distance between the inclined surface and the coal inlet (102) gradually increases in the direction away from the main body. The baffles (81) form the extension.

10. The coal bunker according to claim 1, characterized in that, The walking part (90) includes a telescopic part (91) and a rolling part (92). The telescopic part (91) is located at the bottom of the support frame (10), and the rolling part (92) is located at the end of the telescopic part (91) away from the coal inlet (102). The telescopic part (91) and the rolling part (92) are drivenly connected. The telescopic part (91) can drive the rolling part (92) to extend out of the support frame (10) to move the support frame (10), or retract into the support frame (10).

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