Delivery door and conveying device having the same

Abstract

The application provides a delivery device with a discharging door, wherein the discharging door comprises a frame, the frame comprises a connecting beam, a first stand column and a second stand column which are arranged at intervals, the connecting beam is connected between the first stand column and the second stand column, and the connecting beam divides the frame into a containing area and a discharging area; a blocking door is movably arranged between the first stand column and the second stand column, the blocking door has a blocking position for blocking the discharging area and a avoiding position for avoiding the discharging area; a guide part is arranged on the first stand column and / or the second stand column, and a surface of the guide part towards a vertical axis of the frame is provided with a first guide part; a rotating part is rotatably arranged on the blocking door, and the rotating part is provided with a second guide part which is guided with the first guide part, one of the first guide part and the second guide part is a convex part, and the other is a concave part. The technical scheme of the application effectively solves the problem of unstable position of the discharging door in the related art during opening and closing.

Description

Technical Field

[0001] This invention relates to the field of transport container technology, and more specifically, to an unloading door and a transport device having therein. Background Technology

[0002] When using containers to transport bulk cargo, containers can hold a large amount of goods at once, offering good economic benefits. For easy unloading, unloading doors are installed on the side of the container, and a door frame is installed at the location where the unloading door is installed. The unloading door moves within the door frame. The unloading door controls the outflow of goods from the container and is a key component for interfacing with external equipment and facilities.

[0003] In related technologies, when unloading cargo, the guide device installed on the door frame can guide the movement of the unloading door. However, the cargo inside the container will squeeze the unloading door. Since there is a certain gap between the guide device and the unloading door, the unloading door will be squeezed to fit against the guide device, which is not conducive to the opening and closing of the unloading door. Summary of the Invention

[0004] The main objective of this invention is to provide a loading door and a conveying device having the same, so as to solve the problem of unstable position of the loading door during opening and closing in the related art.

[0005] To achieve the above objectives, according to one aspect of the present invention, a loading gate is provided, comprising: a frame including a first column, a second column, and a connecting beam, the first column and the second column being spaced apart, the connecting beam connecting the first column and the second column, the connecting beam dividing the frame into a receiving area and a discharging area; a blocking gate movably disposed between the first column and the second column, the blocking gate having a blocking position for blocking the discharging area and a circumventing position for avoiding the discharging area; a guide member disposed on the first column and / or the second column, the guide member having a first guide portion disposed on its surface facing the vertical axis of the frame; and a rotating member rotatably disposed on the blocking gate, the rotating member having a second guide portion that guides and cooperates with the first guide portion, one of the first guide portion and the second guide portion being a protrusion, and the other of the first guide portion and the second guide portion being a recess.

[0006] Furthermore, the guide member includes a first guide plate and a second guide plate, with a first included angle between the first guide plate and the second guide plate. The surface of the first guide plate facing the vertical axis of the frame forms a first guide surface, and the surface of the second guide plate facing the vertical axis of the frame forms a second guide surface. The first guide surface and the second guide surface form a first guide portion.

[0007] Furthermore, the rotating component includes a roller, on the side wall of which a third guide surface and a fourth guide surface connected to the third guide surface are provided. The third guide surface and the fourth guide surface have a second included angle, which is equal to the first included angle. The first guide surface and the third guide surface are in contact with each other, and the fourth guide surface and the second guide surface are in contact with each other.

[0008] Furthermore, the first guide portion is a convex portion, the second guide portion is a concave portion, and the roller is also provided with a clearance groove, which is located at the bottom of the concave portion, and the connection between the first guide plate and the second guide plate is inserted into the clearance groove.

[0009] Furthermore, the unloading door also includes a connecting plate, which has an installation space between it and the sealing door. Rollers are located within the installation space. The first end of the connecting plate is connected to the sealing door, and the rollers are connected to the second end of the connecting plate.

[0010] Furthermore, the unloading door also includes a positioning element, which is installed on the sealing door. The positioning element is located between the vertical axis of the frame and the rotating part, and the positioning element abuts against the connecting plate to determine the installation position of the rotating part.

[0011] Furthermore, the positioning component includes a fixed plate and an adjusting screw. The fixed plate is connected to the sealing door, and the adjusting screw passes through the fixed plate and abuts against the connecting plate.

[0012] Furthermore, the rotating component also includes a mounting plate connected to the connecting plate. The mounting plate is installed on the sealed door and located between the sealed door and the roller. The sealed door is provided with a strip-shaped hole that extends horizontally to allow the position of the mounting plate to be adjusted.

[0013] Furthermore, the unloading door also includes a mounting beam and a drive unit. The mounting beam is located within the receiving area and connected to the first and second columns. The mounting beam is located above the connecting beam, and the drive unit is mounted on the mounting beam and connected to the sealing door drive.

[0014] According to another aspect of the present invention, a conveying device is provided, comprising: a storage compartment having a storage space therein and an installation opening thereon; and an unloading door installed at the installation opening, wherein the unloading door is the unloading door described above.

[0015] According to the technical solution of this invention, the frame includes a first column and a second column spaced apart, and a connecting beam connecting the first column and the second column. The connecting beam divides the frame into a receiving area and a discharge area. A movable blocking door is provided between the first column and the second column. The blocking door has a blocking position and a retraction position. When the blocking door is in the blocking position, it blocks the discharge area; when the blocking door is in the retraction position, it retracts from the discharge area. A guide member is provided on the first column and / or the second column. A first guide portion is provided on the surface of the guide member facing the vertical axis of the frame. A rotating member is rotatably provided on the blocking door. A second guide portion is provided on the rotating member. The second guide portion cooperates with the first guide portion. One of the first guide portion and the second guide portion is a protrusion, and the other is a recess. Through the above-described configuration, the connecting beam ensures a more stable relative position between the first and second columns. Consequently, when the blocking door moves between the first and second columns—that is, when it switches between the blocking position and the avoidance position—the first and second columns will not interfere with the movement of the blocking door due to positional changes. The first and second guide parts cooperate to guide the movement of the rotating parts and limit their movement, resulting in smoother movement and preventing wobbling. One of the first and second guide parts is a convex part, and the other is a concave part, making their cooperation more stable and thus ensuring a more stable position for the blocking door during movement. Therefore, the technical solution of this application effectively solves the problem of unstable position of the unloading door during opening and closing in related technologies. Attached Figure Description

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

[0017] Figure 1 A three-dimensional structural schematic diagram of an embodiment of the unloading gate according to the present invention is shown;

[0018] Figure 2 It shows Figure 1 A cross-sectional view of the loading dock;

[0019] Figure 3 It shows Figure 1 A cross-sectional view of another location of the unloading door;

[0020] Figure 4 It shows Figure 3 A magnified view of part A of the unloading gate;

[0021] Figure 5 It shows Figure 1A front view diagram showing the unloading door in a blocked position.

[0022] The above figures include the following reference numerals:

[0023] 10. Frame; 11. First column; 12. Second column; 13. Connecting beam; 14. Receiving area; 15. Discharge area; 20. Sealing door; 30. Guide component; 31. First guide section; 32. First guide plate; 321. First guide surface; 33. Second guide plate; 331. Second guide surface; 40. Rotating component; 41. Second guide section; 42. Roller; 421. Third guide surface; 422. Fourth guide surface; 423. Clearance groove; 43. Mounting plate; 50. Connecting plate; 60. Installation space; 70. Positioning component; 71. Fixing plate; 72. Adjusting screw; 80. Mounting beam; 90. Driving component. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, 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 invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] 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.

[0026] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the 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 figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0027] like Figure 1 and Figure 2 As shown, according to one aspect of the present invention, a loading gate is provided, comprising: a frame 10, a sealing gate 20, a guide member 30, and a rotating member 40. The frame 10 includes a first column 11, a second column 12, and a connecting beam 13. The first column 11 and the second column 12 are spaced apart, and the connecting beam 13 connects the first column 11 and the second column 12, dividing the frame 10 into a receiving area 14 and a discharge area 15. The sealing gate 20 is movably disposed between the first column 11 and the second column 12, and has a sealing position for sealing the discharge area 15 and a clearance position for avoiding the discharge area 15. The guide member 30 is disposed on the first column 11 and the second column 12, and a first guide portion 31 is provided on the surface of the guide member 30 facing the vertical axis of the frame 10. The rotating member 40 is rotatably mounted on the blocking door 20. The rotating member 40 is provided with a second guide portion 41 that cooperates with the first guide portion 31. One of the first guide portion 31 and the second guide portion 41 is a convex portion, and the other of the first guide portion 31 and the second guide portion 41 is a concave portion.

[0028] Applying the technical solution of this embodiment, the frame 10 includes a first column 11 and a second column 12 spaced apart, and a connecting beam 13 connecting the first column 11 and the second column 12. The connecting beam 13 divides the frame 10 into a receiving area 14 and a discharge area 15. A movable blocking door 20 is provided between the first column 11 and the second column 12. The blocking door 20 has a blocking position and a retraction position. When the blocking door is in the blocking position, it blocks the discharge area 15. When the blocking door is in the retraction position, it retracts from the discharge area 15. Guide members 30 are provided on the first column 11 and the second column 12. A first guide portion 31 is provided on the surface of the guide member 30 facing the vertical axis of the frame 10. A rotating member 40 is rotatably provided on the blocking door 20. A second guide portion 41 is provided on the rotating member 40. The second guide portion 41 cooperates with the first guide portion 31. One of the first guide portion 31 and the second guide portion 41 is a convex part, and the other is a concave part. Through the above-described configuration, the connecting beam 13 ensures a more stable relative position between the first column 11 and the second column 12. Consequently, when the blocking door 20 moves between the first column 11 and the second column 12—that is, when the blocking door 20 switches between the blocking position and the avoidance position—the first column 11 and the second column 12 will not interfere with the movement of the blocking door 20 due to positional changes. The first guide part 31 cooperates with the second guide part 41, enabling the guide part 30 to guide the movement of the rotating part 40 and also to limit the rotation of the rotating part 40. This makes the movement of the blocking door 20 smoother and also limits its movement, preventing it from wobbling. One of the first guide part 31 and the second guide part 41 is a convex part, and the other is a concave part. This makes the cooperation between the first guide part 31 and the second guide part 41 more stable, thus making the position of the blocking door 20 more stable during movement. Therefore, the technical solution of this embodiment effectively solves the problem of unstable position of the unloading door during opening and closing in related technologies.

[0029] Specifically, in this embodiment, guide members 30 are provided on both the first column 11 and the second column 12. Multiple moving members are provided; some of the moving members contact and engage with the guide members on the first column, while others contact and engage with the guide members on the second column. Preferably, the moving members contacting and engaging with the guide members on the first column and the moving members contacting and engaging with the guide members on the second column are symmetrically arranged. The distance between the multiple moving members contacting and engaging with the guide members on the first column is the same, and the distance between the multiple moving members contacting and engaging with the guide members on the second column is also the same. This arrangement improves the opening efficiency of the sealing door, thereby improving the unloading efficiency.

[0030] Of course, in embodiments not shown in the figure, the guide can also be a guide block. The guide block is installed on the first column and the second column by nuts and bolts. The guide block is provided with a strip hole. The opening direction of the strip hole is towards the vertical axis of the frame. The strip hole can move in a direction perpendicular to the sealing door, so that the sealing door can be automatically adjusted when it is squeezed by the goods.

[0031] like Figure 3 and Figure 4 As shown, in this embodiment, the guide member 30 includes a first guide plate 32 and a second guide plate 33, with a first included angle between them. The surface of the first guide plate 32 facing the vertical axis of the frame 10 forms a first guide surface 321, and the surface of the second guide plate 33 facing the vertical axis of the frame 10 forms a second guide surface 331. The first guide surface 321 and the second guide surface 331 form a first guide portion 31. The first guide plate 32 and the second guide plate 33 facilitate smoother guiding cooperation between the second guide portion 41 and the first guide surface 321 and the second guide surface 331.

[0032] Preferably, the first included angle is between 30° and 150°, and can be 60°, 90°, or 120°. Of course, other values ​​are also possible.

[0033] like Figure 4 As shown, in this embodiment, the rotating component 40 includes a roller 42. A third guide surface 421 and a fourth guide surface 422 connected to the third guide surface 421 are provided on the side wall of the roller 42. A second included angle exists between the third guide surface 421 and the fourth guide surface 422, which is equal to the first included angle. The first guide surface 321 and the third guide surface 421 are in contact with each other, and the fourth guide surface 422 and the second guide surface 331 are in contact with each other. This arrangement allows the third guide surface 421 to fit against the first guide surface 321 and the second guide surface 331 to fit against the fourth guide surface 422 when the roller rolls, thereby enabling the first guide portion 31 and the second guide portion 41 to facilitate smoother movement of the blocking door relative to the frame.

[0034] Specifically, a rotating pair is formed between the roller 42, the first guide plate 32, and the second guide plate 33.

[0035] like Figure 4As shown, in this embodiment, the first guide portion 31 is a convex portion, the second guide portion 41 is a concave portion, and the roller 42 is also provided with a relief groove 423. The relief groove 423 is located at the bottom of the concave portion, and the connection between the first guide plate 32 and the second guide plate 33 is inserted into the relief groove 423. The first guide portion 31 is a convex portion, that is, the connection between the first guide plate 32 and the second guide plate 33 protrudes towards the vertical axis close to the frame 10. The second guide portion 41 is a concave portion, that is, the connection between the third guide surface 421 and the fourth guide surface 422 protrudes towards the axial direction close to the roller 42. The above-mentioned arrangement allows the first guide section 31 to be partially located within the clearance groove 423, thereby preventing the first guide section 31 and the second guide section 41 from squeezing each other due to the compression of the goods when the door 20 is opened. The connection between the first guide plate 32 and the second guide plate 33 can be adjusted within the clearance groove 423, thus preventing the first guide section 31 and the second guide section 41 from getting stuck due to friction caused by the compression of the goods.

[0036] like Figure 3 and Figure 4 As shown, in this embodiment, the unloading door further includes a connecting plate 50. An installation space 60 exists between the connecting plate 50 and the sealing door 20. A roller 42 is located within the installation space 60. The first end of the connecting plate 50 is connected to the sealing door 20, and the roller 42 is connected to the second end of the connecting plate 50. The installation space 60 allows the roller 42 to be installed between the connecting plate 50 and the sealing door 20. The connecting plate 50 allows the roller 42 to connect with the sealing door 20, thereby enabling the roller 42 and the first guide portion 31 to guide the movement of the sealing door 20 when it moves, making the movement of the sealing door 20 smoother.

[0037] Preferably, the height of the installation space 60 is greater than the thickness of the roller 42. This reduces the distance between the roller 42 and the sealing door 20 when the goods press against it, thereby causing mutual compression between the first guide part 31 and the roller 42. This prevents the roller 42 from contacting the sealing door 20 and affecting its movement.

[0038] Specifically, the connecting plate 50 includes a first plate segment and a second plate segment connected to the first plate segment. The first plate segment is arranged parallel to the mounting plate 43, and the second plate segment is arranged perpendicular to the first plate segment. The roller 42 is rotatably mounted on the end of the first plate segment away from the second plate segment. The guide member, the mounting plate, and the connecting plate form front, back, up, and down constraints on the roller, so that the roller will not deviate when rotating.

[0039] like Figure 1 and Figure 4As shown, in this embodiment, the unloading door also includes a positioning element 70, which is disposed on the sealing door 20. The positioning element 70 is located between the vertical axis of the frame 10 and the rotating element 40, and the positioning element 70 abuts against the connecting plate 50 to determine the installation position of the rotating element 40. This arrangement allows the positioning element 70 to determine the installation position of the rotating element 40, thereby enabling a more reasonable distance between the rotating element 40 and the guide element 30 by adjusting the installation position of the rotating element 40, thus preventing jamming between the rotating element 40 and the guide element 30 when the sealing door 20 moves.

[0040] like Figure 3 and Figure 4 As shown, in this embodiment, the positioning member 70 includes a fixing plate 71 and an adjusting screw 72. The fixing plate 71 is connected to the blocking door 20, and the adjusting screw 72 passes through the fixing plate 71 and abuts against the connecting plate 50. The fixing plate 71 allows the adjusting screw 72 to rotate, thereby changing the relative position of the adjusting screw 72 with respect to the blocking door 20. The adjusting screw 72 abuts against the connecting plate 50, and the roller 42 is mounted on the connecting plate 50. This allows the installation position of the rotating member 40 to be adjusted by changing the position of the adjusting screw 72.

[0041] like Figure 4 As shown, in this embodiment, the rotating component 40 further includes a mounting plate 43 connected to the connecting plate 50. The mounting plate 43 is mounted on the blocked door 20 and located between the blocked door 20 and the roller 42. The blocked door 20 is provided with a strip-shaped hole that extends horizontally to allow the position of the mounting plate 43 to be adjusted. The mounting plate 43 makes the connection between the roller 42 and the blocked door 20 more stable. The strip-shaped hole allows the installation position of the mounting plate 43 to be changed according to the position of the adjusting screw 72, thereby driving the roller 42 to change position. This ensures that the roller 42 not only fits against the first guide part 31, but also prevents jamming between the roller 42 and the first guide part 31.

[0042] like Figure 5 As shown, in this embodiment, the unloading door further includes a mounting beam 80 and a drive component 90. The mounting beam 80 is located within the receiving area 14 and connected to the first column 11 and the second column 12. The mounting beam 80 is positioned above the connecting beam 13. The drive component 90 is mounted on the mounting beam 80 and is drivenly connected to the blocking door 20. The mounting beam 80 makes the position of the drive component 90 more stable, thereby enabling the drive component 90 to drive the blocking door 20 to move between a blocking position and an avoidance position. The mounting beam 80 also makes the connection between the first column 11 and the second column 12 more stable, ensuring the normal use of the unloading door.

[0043] It should be noted that in this embodiment, the driving component is a cylinder. The pneumatic system controls the reciprocating motion of the cylinder, thereby driving the sealing door to reciprocate. The pneumatic control system includes an air source and a controller. When the sealing door needs to be opened or closed, that is, when the sealing door needs to be moved to an avoidance position or to a sealing position, the controller controls the air source to supply air to the cylinder, causing the cylinder to move and driving the sealing door to move. Of course, in the embodiment not shown in the figure, the driving component 90 can also be a driven gear disposed on the sealing door 20 and a driving gear disposed on the mounting beam 80, with the driven gear and the driving gear connected by a rack and pinion.

[0044] Specifically, the unloading gate also includes a top beam and a bottom beam. The top beam connects between the first column 11 and the second column 12 and is located above the drive member 90, which is located between the top beam and the mounting beam. The bottom beam connects between the first column and the second column and is located below the connecting beam 13, forming a discharge area between the connecting beam 13 and the bottom beam.

[0045] like Figures 1 to 5 As shown, according to another aspect of the present invention, a conveying device is provided, comprising: a storage compartment having a storage space therein and an installation opening on the storage compartment; and a loading door, which is installed at the installation opening and is the loading door described above. The loading door, with its protrusion and concave portion guiding each other, can prevent the blocking door 20 from changing position during movement, thus making the movement of the blocking door 20 more stable. The conveying device having the loading door described above also has the aforementioned advantages.

[0046] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention 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 invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0047] 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.

[0048] 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 should not be construed as limiting the scope of protection of this invention.

[0049] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A loading gate, characterized in that, include: The frame (10) includes a first column (11), a second column (12) and a connecting beam (13). The first column (11) and the second column (12) are spaced apart. The connecting beam (13) connects the first column (11) and the second column (12). The connecting beam (13) divides the frame (10) into a receiving area (14) and a discharge area (15). A blocking door (20) is movably disposed between the first column (11) and the second column (12). The blocking door (20) has a blocking position for blocking the discharge area (15) and a evading position for avoiding the discharge area (15). Guide (30), the guide (30) is disposed on the first column (11) and / or the second column (12), and the guide (30) has a first guide part (31) on its surface facing the vertical axis of the frame (10). A rotating member (40) is rotatably disposed on the blocking door (20). The rotating member (40) is provided with a second guide portion (41) that guides and cooperates with the first guide portion (31). One of the first guide portion (31) and the second guide portion (41) is a protrusion, and the other of the first guide portion (31) and the second guide portion (41) is a recess. The rotating member (40) includes a roller (42). The unloading door also includes a connecting plate (50), and there is an installation space (60) between the connecting plate (50) and the sealing door (20). The roller (42) is located in the installation space (60). The first end of the connecting plate (50) is connected to the sealing door (20), and the roller (42) is connected to the second end of the connecting plate (50). The unloading door also includes a positioning component (70), which includes a fixing plate (71) and an adjusting screw (72). The fixing plate (71) is connected to the sealing door (20), and the adjusting screw (72) passes through the fixing plate (71) and abuts against the connecting plate (50). The positioning element (70) is disposed on the blocking door (20). The positioning element (70) is located between the vertical axis of the frame (10) and the rotating element (40). The positioning element (70) abuts against the connecting plate (50) to determine the installation position of the rotating element (40). The rotating component (40) also includes a mounting plate (43) connected to the connecting plate (50). The mounting plate (43) is mounted on the blocked door (20) and located between the blocked door (20) and the roller (42). The blocked door (20) is provided with a strip hole that extends horizontally so that the position of the mounting plate (43) can be adjusted. The guide member (30) includes a first guide plate (32) and a second guide plate (33); The height of the mounting space (60) is greater than the thickness of the roller (42). The first guide part (31) is a convex part, the second guide part (41) is a concave part, and the roller (42) is also provided with a relief groove (423). The relief groove (423) is located at the bottom of the concave part, and the connection between the first guide plate (32) and the second guide plate (33) is inserted into the relief groove (423).

2. The unloading door according to claim 1, characterized in that, The first guide plate (32) and the second guide plate (33) have a first included angle. The surface of the first guide plate (32) facing the vertical axis of the frame (10) forms a first guide surface (321), and the surface of the second guide plate (33) facing the vertical axis of the frame (10) forms a second guide surface (331). The first guide surface (321) and the second guide surface (331) form the first guide portion (31).

3. The unloading door according to claim 2, characterized in that, The roller (42) has a third guide surface (421) and a fourth guide surface (422) connected to the third guide surface (421) on its side wall. The third guide surface (421) and the fourth guide surface (422) have a second included angle, which is equal to the first included angle. The first guide surface (321) and the third guide surface (421) are in contact with each other, and the fourth guide surface (422) and the second guide surface (331) are in contact with each other.

4. The unloading door according to any one of claims 1 to 3, characterized in that, The unloading door also includes a mounting beam (80) and a drive unit (90). The mounting beam (80) is located in the receiving area (14) and connected to the first column (11) and the second column (12). The mounting beam (80) is located above the connecting beam (13). The drive unit (90) is mounted on the mounting beam (80) and drivenly connected to the sealing door (20).

5. A conveying device, characterized in that, include: A storage compartment, which contains storage space and has an installation port. A loading door, wherein the loading door is installed at the mounting opening, and the loading door is the loading door as described in any one of claims 1 to 4.

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