Material drop hatch opening and closing device

By introducing a clutch gear mechanism into the material delivery hatch of the drone, the switching between electric and manual operation is realized, which solves the problem of the hatch not being able to open when the power is interrupted or the drive fails, and improves the emergency use capability of the drone.

CN224532518UActive Publication Date: 2026-07-21HUBEI YUNSHENG AEROSPACE TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HUBEI YUNSHENG AEROSPACE TECH CO LTD
Filing Date
2025-08-22
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

The existing material delivery hatch opening and closing device cannot be manually opened in the event of a power outage or drive failure, which affects the emergency use of the drone.

Method used

A material delivery hatch opening and closing device was designed, which adopts a clutch gear mechanism. The clutch gear engages with the gear shaft and gear coupling in the first position to achieve electric operation, and disengages in the second position to facilitate manual operation. Combined with the drive component and locking component, it realizes rapid switching of power transmission.

Benefits of technology

The hatch allows for manual opening during power failures, improving its emergency reliability and usability, and enhancing operational flexibility and safety through remote or manual control.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a kind of material delivery hatch opening and closing device, including rack, hatch, clutch mechanism, driver and at least one transmission mechanism;Hatch is movably located in rack;Clutch mechanism includes shell, gear shaft, gear coupling and clutch gear, gear shaft, gear coupling, clutch gear are all located in shell, clutch gear is located between gear shaft and clutch gear;Driver is installed on shell, the output end of driver passes through second via hole and is connected to gear coupling;At least one transmission mechanism has transmission input end and transmission output end, transmission input end is connected to one end of gear shaft, and transmission output end is connected to hatch.The utility model when clutch gear is in second position, clutch gear and gear shaft and gear coupling disengage, driver and transmission input end separate, hatch can be manually operated at this time, avoid the problem that hatch cannot be opened due to power failure, so that the emergency reliability and practicality of hatch can be improved.
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Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) technology, specifically to a material delivery hatch opening and closing device. Background Technology

[0002] Drones are increasingly used in logistics, agriculture, emergency rescue, and other fields, with material delivery being a crucial function. Existing material delivery hatch opening and closing mechanisms mostly employ a motor-driven structure, but in the event of a power outage or driver failure, the hatch often cannot be manually opened, severely impacting the drone's emergency use. Utility Model Content

[0003] Based on the above description, this utility model provides a material delivery hatch opening and closing device, which aims to solve the problem that existing material delivery hatch opening and closing devices mostly adopt a structure in which the hatch is directly driven by a motor, and the hatch cannot be manually opened when the power is interrupted or the driver fails.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A material dispensing hatch opening and closing device includes: frame; The hatch is movably located within the frame; The clutch mechanism includes a housing, a gear shaft, a gear coupling, and a clutch gear. The housing has a first side plate and a second side plate facing each other. A first through hole is provided on both the first side plate and the second side plate. A second through hole is provided on the first side plate. The gear shaft, the gear coupling, and the clutch gear are all disposed inside the housing. The two ends of the gear shaft pass through the two first through holes one by one and are exposed outside the housing. The clutch gear is located between the gear shaft and the clutch gear. A driver is mounted on the housing, and the output end of the driver passes through the second through hole and is connected to the gear coupling; At least one transmission mechanism has a transmission input end and a transmission output end, wherein the transmission input end is connected to one end of the gear shaft and the transmission output end is connected to the hatch; The clutch gear has a first position and a second position. When the clutch gear is in the first position, the clutch gear meshes with the gear shaft and the gear coupling, and the driver is connected to the transmission input end. When the clutch gear is in the second position, the clutch gear does not mesh with the gear shaft and the gear coupling, and the driver is disconnected from the transmission input end.

[0005] Based on the above technical solution, the present invention can be further improved as follows.

[0006] Furthermore, the clutch mechanism includes a drive assembly connected to the clutch gear.

[0007] Furthermore, the second side plate has a third through hole corresponding to the clutch gear. The drive assembly includes a first moving shaft, an elastic element, and a pull rope. The first moving shaft is disposed inside the housing. The clutch gear and the elastic element are sequentially sleeved on the first moving shaft facing the second side plate. One end of the elastic element abuts against the clutch gear, and the other end of the elastic element abuts against the second side plate. One end of the first moving shaft passes through the third through hole and is exposed outside the housing. One end of the pull rope is connected to one end of the first moving shaft.

[0008] Furthermore, the drive assembly includes a locking element mounted on the frame and connected to the other end of the pull rope.

[0009] Furthermore, the locking component includes a second moving shaft and a bushing. The second moving shaft has at least one limiting protrusion. The bushing is sleeved on the second moving shaft and mounted on the frame. The end of the bushing away from the housing has at least one first limiting groove and at least one second limiting groove. The axis of the second limiting groove forms an angle with the axis of the first limiting groove, and the depth of the second limiting groove is less than the depth of the first limiting groove. When the clutch gear is in the first position, the limiting protrusion engages in the first limiting groove. When the clutch gear is in the second position, the limiting protrusion engages in the second limiting groove.

[0010] Furthermore, the transmission mechanism includes a transmission shaft and a transmission assembly, one end of the transmission shaft serves as the transmission input end, the input end of the transmission assembly is connected to the other end of the transmission shaft, and the output end of the transmission assembly serves as the transmission output end.

[0011] Furthermore, there are two hatches and two transmission assemblies. The two hatches are arranged opposite each other along the length of the frame. The transmission assembly is a belt drive assembly. The output ends of the two belt drive assemblies can move towards each other or away from each other along the length of the frame. The output ends of the two belt drive assemblies are connected to the two hatches one-to-one. The two belt drive assemblies share a common shaft.

[0012] Furthermore, it includes at least one pair of sliding components, each pair of sliding components being symmetrically arranged about a defined axis, and the hatch is connected to the frame via the at least one pair of sliding components.

[0013] Furthermore, the frame is formed by two guide rails and two support beams, the sliding assembly includes rollers and mounting components, the rollers are rotatably mounted on the mounting components, the rollers roll in cooperation with the guide rails, and the mounting components are connected to the hatch.

[0014] Furthermore, the mounting component includes a mounting plate and a clamping plate, the mounting plate being rotatably disposed on the mounting plate, and the clamping plate being detachably connected to the mounting plate.

[0015] Compared with the prior art, the technical solution of this application has the following beneficial technical effects: (1) When the clutch gear is in the second position, the clutch gear disengages from the gear shaft and gear coupling, and the driver is separated from the transmission input end. At this time, the hatch can be operated manually to avoid the problem of the hatch not being able to be opened due to power failure, thereby improving the emergency reliability and practicality of the hatch.

[0016] (2) The present invention can be easily controlled remotely or manually through the drive component, thereby improving the flexibility and safety of operation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a material delivery hatch opening and closing device provided in an embodiment of this utility model; Figure 2 This is an assembly diagram of the frame, clutch mechanism, and transmission mechanism in an embodiment of the present utility model; Figure 3 This is an assembly diagram of the clutch mechanism and the driver in an embodiment of the present utility model; Figure 4 This is a schematic diagram of the clutch mechanism in an embodiment of the present invention; Figure 5 This is a schematic diagram of the locking component in an embodiment of the present utility model; Figure 6 This is a schematic diagram of the bushing structure in an embodiment of the present utility model; Figure 7 This is a schematic diagram of the structure of the second moving shaft in an embodiment of this utility model; Figure 8 This is a schematic diagram of the transmission mechanism in an embodiment of the present utility model; Figure 9 This is a schematic diagram of the sliding component in an embodiment of the present invention.

[0019] Explanation of reference numerals in the attached figures: 10. Frame; 11. Guide rail; 12. Support beam; 20. Cabin door; 30. Clutch mechanism; 31. Housing; 311. First side plate; 312. Second side plate; 32. Gear shaft; 33. Gear coupling; 34. Clutch gear; 35. Drive assembly; 351. First moving shaft; 352. Elastic element; 353. Pull rope; 354. Locking element; 3541. Second moving shaft; 35411. Limiting protrusion; 3542. Bushing; 35421. First limiting groove; 35422. Second limiting groove; 3543. Handle; 40. Driver; 50. Transmission mechanism; 51. Drive shaft; 52. Transmission assembly; 521. Synchronous pulley; 522. Synchronous belt; 523. Connecting component; 60. Sliding assembly; 61. Roller; 62. Mounting component; 621. Mounting plate; 622. Pressure plate. Detailed Implementation

[0020] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0022] It is understood that spatial relation terms such as "below," "under," "below," "below," "above," "over," etc., can be used here to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, the element or feature described as "below" or "under" or "below" of other elements or features will be oriented "over" of other elements or features. Therefore, the exemplary terms "below" and "under" can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein will be interpreted accordingly.

[0023] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” or “having,” etc., specify the presence of the stated feature, whole, step, operation, component, part, or combination thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.

[0024] Reference Figures 1 to 4 As shown, this utility model provides a technical solution: a material feeding hatch opening and closing device, including a frame 10, a hatch 20, a clutch mechanism 30, a driver 40, and at least one transmission mechanism 50; the hatch 20 is movably disposed within the frame 10; the clutch mechanism 30 includes a housing 31, a gear shaft 32, a gear coupling 33, and a clutch gear 34. The housing 31 has opposing first side plates 311 and second side plates 312, each with a first through hole, and the first side plate 311 with a second through hole. The gear shaft 32, the gear coupling 33, and the clutch gear 34 are all disposed within the housing 31, with both ends of the gear shaft 32 passing through the two first through holes and exposed outside the housing 31. The clutch gear 34 is located between the gear shaft 32 and the clutch gear 34; the driver 40 is mounted on the housing 31, and the output end of the driver 40 passes through the second through hole and is connected to the gear coupling 33; at least one transmission mechanism 50 has a transmission input end and a transmission output end, the transmission input end is connected to one end of the gear shaft 32, and the transmission output end is connected to the hatch 20; the clutch gear 34 has a first position and a second position. When the clutch gear 34 is in the first position, the clutch gear 34 meshes with the gear shaft 32 and the gear coupling 33, and the driver 40 is connected to the transmission input end; when the clutch gear 34 is in the second position, the clutch gear 34 does not mesh with the gear shaft 32 and the gear coupling 33, and the driver 40 is separated from the transmission input end.

[0025] The instruction manual requires that the first position refers to the position where the clutch gear 34 is simultaneously engaged with the gear shaft 32 and the gear coupling 33, and the second position refers to the position where the clutch gear 34 is disengaged from the gear shaft 32 and the gear coupling 33.

[0026] For example, the driver 40 can be a motor, etc.

[0027] According to this embodiment, when the clutch gear 34 is in the first position, the clutch gear 34 meshes simultaneously with the gear shaft 32 and the gear coupling 33. The power of the driver 40 is transmitted to the gear shaft 32 through the gear coupling 33 and the clutch gear 34, thereby driving the transmission mechanism 50 to control the opening and closing of the hatch 20, realizing electric operation. When the clutch gear 34 is in the second position, the clutch gear 34 disengages from the gear shaft 32 and the gear coupling 33, and the driver 40 is separated from the transmission input end. At this time, the hatch 20 can be operated manually, avoiding the problem of the hatch 20 being unable to open due to power failure, thereby improving the emergency reliability and practicality of the hatch 20.

[0028] Reference Figures 3 to 4 As shown, in some embodiments, the clutch mechanism 30 includes a drive assembly 35 connected to a clutch gear 34.

[0029] According to this embodiment, the drive assembly 35 controls the engagement or disengagement of the clutch gear 34 with the gear shaft 32 and the gear coupling 33 to achieve rapid switching of power transmission.

[0030] Reference Figures 3 to 4 As shown, in some embodiments, the second side plate 312 has a third through hole corresponding to the clutch gear 34. The drive assembly 35 includes a first moving shaft 351, an elastic element 352, and a pull rope 353. The first moving shaft 351 is disposed inside the housing 31. The clutch gear 34 and the elastic element 352 are sequentially sleeved on the first moving shaft 351 facing the second side plate 312. One end of the elastic element 352 abuts against the clutch gear 34, and the other end of the elastic element 352 abuts against the second side plate 312. One end of the first moving shaft 351 passes through the third through hole and is exposed outside the housing 31. One end of the pull rope 353 is connected to one end of the first moving shaft 351.

[0031] For example, the elastic element 352 can be a spring or an elastic rubber ring, etc.

[0032] According to this embodiment, pulling the pull rope 353 moves the first moving shaft 351, and the elastic element 352 compresses the second side plate 312, causing the clutch gear 34 to disengage. After releasing the pull rope 353, the elastic element 352 returns to its original shape, pushing the clutch gear 34 back to its original position. This facilitates remote or manual control, improving operational flexibility and safety.

[0033] Reference Figures 3 to 7 As shown, in some embodiments, the drive assembly 35 includes a locking element 354 mounted on the frame 10 and connected to the other end of the pull rope 353.

[0034] According to this embodiment, the locking member 354 can restrict the movement of the first moving shaft 351 to prevent the clutch gear 34 from resetting and engaging with the gear shaft 32 and the gear coupling 33.

[0035] Reference Figures 3 to 7 As shown, in some embodiments, the locking member 354 includes a second moving shaft 3541 and a bushing 3542. The second moving shaft 3541 is provided with at least one limiting protrusion 35411. The bushing 3542 is sleeved on the second moving shaft 3541 and mounted on the frame 10. At least one first limiting groove 35421 and at least one second limiting groove 35422 are provided at the end of the bushing 3542 away from the housing 31. The axis of the second limiting groove 35422 forms an angle with the axis of the first limiting groove 35421. The depth of the second limiting groove 35422 is less than the depth of the first limiting groove 35421. When the clutch gear 34 is in the first position, the limiting protrusion 35411 is engaged in the first limiting groove 35421. When the clutch gear 34 is in the second position, the limiting protrusion 35411 is engaged in the second limiting groove 35422.

[0036] According to this embodiment, by rotating the second moving shaft 3541, the limiting protrusion 35411 can be engaged into different limiting slots to achieve mechanical locking of the position of the clutch gear 34, and different modes can be achieved in conjunction with the clutch gear 34.

[0037] For example, when the limiting protrusion 35411 is engaged in the first limiting groove 35421, the clutch gear 34 meshes with the gear shaft 32 and the gear coupling 33 simultaneously; when the limiting protrusion 35411 is engaged in the second limiting groove 35422, the clutch gear 34 disengages from the gear shaft 32 and the gear coupling 33.

[0038] Reference Figure 5 As shown, in some embodiments, the clutch mechanism 30 includes a handle 3543, which is located at the other end of the second moving shaft 3541.

[0039] According to this embodiment, the handle 3543 is easy to operate manually, which improves the ease of use of the locking element 354.

[0040] Reference Figure 1 and Figure 8 As shown, in some embodiments, the transmission mechanism 50 includes a transmission shaft 51 and a transmission assembly 52. ​​One end of the transmission shaft 51 serves as a transmission input end, the input end of the transmission assembly 52 is connected to the other end of the transmission shaft 51, and the output end of the transmission assembly 52 serves as a transmission output end.

[0041] For example, the transmission assembly 52 can be a lead screw drive assembly 52 or a chain drive assembly 52, etc.; when the transmission assembly 52 is a lead screw drive assembly 52, the transmission shaft 51 and the lead screw of the lead screw drive assembly 52 can be connected by two bevel gears.

[0042] According to this embodiment, the clutch mechanism 30 drives the drive shaft 51 to rotate, transmitting power to the transmission assembly 52, which in turn drives the hatch 20 to move.

[0043] Reference Figure 1 and Figure 8 As shown, in some embodiments, there are two hatches 20 and two transmission assemblies 52. The two hatches 20 are arranged opposite each other along the length of the frame 10. The transmission assembly 52 is a belt drive assembly 52. ​​The output ends of the two belt drive assemblies 52 can move towards each other or away from each other along the length of the frame 10. The output ends of the two belt drive assemblies 52 are connected to the two hatches 20 one to one. The two belt drive assemblies 52 share a common shaft.

[0044] For example, assume that the synchronous belt 522 of each belt drive assembly 52 is divided into upper and lower sections, namely, an upper drive section and a lower drive section. In the belt drive assembly 52 connected to the drive shaft 51, the connector 523 is installed in the upper drive section; in the belt drive assembly 52 not connected to the drive shaft 51, the connector 523 is installed in the lower drive section. Assume that the two synchronous belt pulleys 522 of each belt drive assembly 52 are named the input pulley and the output pulley. The input pulley of the belt drive assembly 52 connected to the drive shaft 51 is sleeved on the drive shaft 51. The output pulley of the belt drive assembly 52 connected to the drive shaft 51 and the input pulley of the belt drive assembly 52 not connected to the drive shaft 51 share a common shaft. The output pulley of the belt drive assembly 52 not connected to the drive shaft 51 is rotatably connected to the frame 10.

[0045] According to this embodiment, the double-door design 20 can increase the opening area and adapt to different deployment needs. When the drive shaft 51 transmits power to the two belt drive assemblies 52, the two belt drive assemblies 52 drive their respective connected doors 20 to move towards or away from each other, realizing the opening and closing of the doors 20. Furthermore, the coaxial design of the two belt drive assemblies 52 can simplify the structure and improve the synchronization of the door 20 operation.

[0046] Reference Figure 1 and Figure 9 As shown, in some embodiments, at least one pair of sliding components 60 are included, each pair of sliding components 60 being symmetrically arranged about a defined axis as the axis of symmetry, and the hatch 20 is connected to the frame 10 through at least one pair of sliding components 60.

[0047] For example, the frame 10 is formed by two guide rails 11 and two support beams 12, and the sliding assembly 60 can be a slider or the like.

[0048] According to this embodiment, the sliding assembly 60 ensures that the hatch 20 moves smoothly during opening and closing, reducing friction and jamming, and improving operational reliability.

[0049] Reference Figure 1 and Figure 9 As shown, in some embodiments, the frame 10 is formed by two guide rails 11 and two support beams 12, and the sliding assembly 60 includes a roller 61 and a mounting member 62. The roller 61 is rotatably mounted on the mounting member 62 and rolls with the guide rails 11. The mounting member 62 is connected to the hatch 20.

[0050] According to this embodiment, the cooperation between the guide rail 11 and the roller 61 enables the smooth sliding of the hatch 20 to reduce friction.

[0051] Reference Figure 9 As shown, in some embodiments, the mounting member 62 includes a mounting plate 621 and a clamping plate 622. The mounting plate 621 is rotatably disposed on the mounting plate 621, and the clamping plate 622 is detachably connected to the mounting plate 621.

[0052] According to this embodiment, the detachable clamping plate 622 and mounting plate 621 facilitate the assembly of the hatch 20, improving the efficiency of maintenance or replacement.

[0053] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A material feeding hatch opening and closing device, characterized in that, include: Rack (10); The hatch (20) is movably disposed within the frame (10); The clutch mechanism (30) includes a housing (31), a gear shaft (32), a gear coupling (33), and a clutch gear (34). The housing (31) has a first side plate (311) and a second side plate (312) facing each other. The first side plate (311) and the second side plate (312) are provided with a first through hole, and the first side plate (311) is provided with a second through hole. The gear shaft (32), the gear coupling (33), and the clutch gear (34) are all located inside the housing (31). The two ends of the gear shaft (32) pass through the two first through holes one by one and are exposed outside the housing (31). The clutch gear (34) is located between the gear shaft (32) and the clutch gear (34). A driver (40) is mounted on the housing (31), and the output end of the driver (40) passes through the second through hole and is connected to the gear coupling (33). At least one transmission mechanism (50) has a transmission input end and a transmission output end, the transmission input end being connected to one end of the gear shaft (32), and the transmission output end being connected to the hatch (20). The clutch gear (34) has a first position and a second position. When the clutch gear (34) is in the first position, the clutch gear (34) meshes with the gear shaft (32) and the gear coupling (33), and the driver (40) is connected to the transmission input end. When the clutch gear (34) is in the second position, the clutch gear (34) does not mesh with the gear shaft (32) and the gear coupling (33), and the driver (40) is separated from the transmission input end.

2. The material dispensing hatch opening and closing device according to claim 1, characterized in that, The clutch mechanism (30) includes a drive assembly (35) which is connected to the clutch gear (34).

3. The material dispensing hatch opening and closing device according to claim 2, characterized in that, The second side plate (312) has a third through hole corresponding to the clutch gear (34). The drive assembly (35) includes a first moving shaft (351), an elastic element (352), and a pull rope (353). The first moving shaft (351) is located inside the housing (31). The clutch gear (34) and the elastic element (352) are sequentially sleeved on the first moving shaft (351) facing the second side plate (312). One end of the elastic element (352) abuts against the clutch gear (34), and the other end of the elastic element (352) abuts against the second side plate (312). One end of the first moving shaft (351) passes through the third through hole and is exposed outside the housing (31). One end of the pull rope (353) is connected to one end of the first moving shaft (351).

4. The material dispensing hatch opening and closing device according to claim 3, characterized in that, The drive assembly (35) includes a locking element (354) mounted on the frame (10) and connected to the other end of the pull rope (353).

5. The material dispensing hatch opening and closing device according to claim 4, characterized in that, The locking member (354) includes a second moving shaft (3541) and a bushing (3542). The second moving shaft (3541) is provided with at least one limiting protrusion (35411). The bushing (3542) is sleeved on the second moving shaft (3541) and mounted on the frame (10). At least one first limiting groove (35421) and at least one second limiting groove (35422) are provided at the end of the bushing (3542) away from the housing (31). The axis of the second limiting groove (35422) forms an angle with the axis of the first limiting groove (35421), and the depth of the second limiting groove (35422) is less than the depth of the first limiting groove (35421). When the clutch gear (34) is in the first position, the limiting protrusion (35411) is inserted into the first limiting groove (35421). When the clutch gear (34) is in the second position, the limiting protrusion (35411) is inserted into the second limiting groove (35422).

6. The material dispensing hatch opening and closing device according to claim 1, characterized in that, The transmission mechanism (50) includes a transmission shaft (51) and a transmission assembly (52). One end of the transmission shaft (51) serves as the transmission input end, the input end of the transmission assembly (52) is connected to the other end of the transmission shaft (51), and the output end of the transmission assembly (52) serves as the transmission output end.

7. The material dispensing hatch opening and closing device according to claim 6, characterized in that, There are two hatches (20) and two transmission components (52). The two hatches (20) are arranged opposite each other along the length of the frame (10). The transmission component (52) is a belt drive component (52). The output ends of the two belt drive components (52) can move towards each other or away from each other along the length of the frame (10). The output ends of the two belt drive components (52) are connected to the two hatches (20) one by one. The two belt drive components (52) share a common shaft.

8. The material dispensing hatch opening and closing device according to any one of claims 1 to 7, characterized in that, Includes at least one pair of sliding components (60), each pair of sliding components (60) being symmetrically arranged about a defined axis as the axis of symmetry, and the hatch (20) being connected to the frame (10) via the at least one pair of sliding components (60).

9. The material dispensing hatch opening and closing device according to claim 8, characterized in that, The frame (10) is formed by two guide rails (11) and two support beams (12). The sliding assembly (60) includes a roller (61) and a mounting piece (62). The roller (61) is rotatably mounted on the mounting piece (62). The roller (61) rolls with the guide rail (11). The mounting piece (62) is connected to the hatch (20).

10. The material dispensing hatch opening and closing device according to claim 9, characterized in that, The mounting component (62) includes a mounting plate (621) and a clamping plate (622). The mounting plate (621) is rotatably mounted on the mounting plate (621), and the clamping plate (622) is detachably connected to the mounting plate (621).