Folding grain bins and harvesters

Abstract

This application belongs to the field of agricultural machinery technology and provides a folding grain bin and a harvester. The folding grain bin includes a base, side plate assemblies, a flexible cover assembly, and a drive mechanism. The side plate assembly includes a first side plate and a second side plate pivotally mounted on the base at a relative interval. The pivot axes of the first and second side plates are parallel and can be flipped from a folded position attached to the base to an upright position. The flexible cover assembly includes a first cover and a second cover. The first cover is connected to a first side of the first and second side plates in the same direction, and the second cover is connected to a second side of the first and second side plates in the same direction. The drive mechanism is used to drive the first and second side plates to flip in a coordinated manner. The drive mechanism in this grain bin requires fewer moving parts, which reduces the design, manufacturing, and installation difficulty of the drive mechanism.

Description

Technical Field

[0001] This application belongs to the field of agricultural machinery technology, specifically relating to a folding grain bin and a harvester. Background Technology

[0002] In recent years, with the continuous improvement of agricultural output and mechanization levels, higher demands have been placed on the operating efficiency of harvesters. To match the trend of large feeding volumes and reduce the frequency of unloading, increasing the grain bin volume on harvesters is imperative. However, simply expanding the volume would significantly increase the overall size of the machine, affecting its maneuverability and flexibility. Therefore, the industry has invented a folding grain bin, which mainly consists of several movable side panels. By driving these panels to unfold, a temporary grain bin can be set up, thereby expanding the grain bin space. When the folding grain bin is not needed, the machine body can be restored to its previous size by driving the movable side panels to fold them back down.

[0003] Existing folding grain silo designs have a significant problem: to achieve enclosure, multiple movable side panels are typically required, which significantly increases the transmission complexity of the side panel drive mechanism. To achieve the orderly unfolding and folding of multiple movable side panels, multi-stage transmissions (such as gears, connecting rods, and hydraulic cylinders transmitting power layer by layer) and complex connection methods are often necessary. This complex transmission architecture is not only difficult to design, but also places extremely high demands on the precision of components and assembly processes. Utility Model Content

[0004] To address the aforementioned deficiencies or shortcomings, this application provides a folding grain silo and a harvester, aiming to solve the technical problem that existing folding grain silos rely on multiple movable side panels for enclosure, resulting in a side panel drive mechanism with multiple transmission stages and complex connection methods.

[0005] To achieve the above objectives, this application provides a folding grain silo, which includes a base, side panel assemblies, a flexible cover assembly, and a drive mechanism. The side panel assembly includes a first side panel and a second side panel pivotally mounted on the base at a relative interval. The pivot axes of the first and second side panels are parallel, and the first and second side panels are respectively capable of flipping from a folded posture attached to the base to an upright posture. The flexible cover assembly includes a first cover and a second cover. The first cover is connected to a first side of the first and second side panels in the same direction, and the second cover is connected to a second side of the first and second side panels in the same direction. The drive mechanism is used to drive the first and second side panels to flip in a coordinated manner.

[0006] In this embodiment, the driving mechanism includes a push-pull driving assembly and a linkage assembly. The length of the linkage assembly is adjustable and one end is hinged to the push-pull driving assembly. The other end of the linkage assembly is hinged to the first side plate or the second side plate. The push-pull driving assembly is used to pull down and push up the linkage assembly to drive the corresponding connected first side plate or second side plate to flip.

[0007] In this embodiment, the linkage assembly includes a rod body and a first rod head and a second rod head disposed at both ends of the rod body. The first rod head and the second rod head are respectively provided with universal hinge components. Threaded screw structures for adjusting the length are respectively provided between the first rod head and the rod body, and / or between the second rod head and the rod body.

[0008] In this embodiment, the connecting rod assembly also includes a lock nut for locking the threaded screw structure.

[0009] In this embodiment, the first side plate and the second side plate are respectively connected to the push-pull drive assembly through their respective linkage assemblies. The push-pull drive assembly is used to synchronously pull down or push up the linkage assembly to synchronously drive the first side plate and the second side plate to rotate in a mirror image.

[0010] In this embodiment, the push-pull drive assembly includes a rotating shaft and a rotary drive member for driving the rotating shaft to rotate. The rotating shaft extends along the opposite direction of the first side plate and the second side plate, and a first rod joint and a second rod joint are formed on the peripheral wall of the rotating shaft. The first rod joint and the second rod joint are spaced apart and aligned in the opposite direction. The first rod joint is disposed near the first side plate and is connected to the first side plate by a connecting rod assembly. The second rod joint is disposed near the second side plate and is connected to the second side plate by a connecting rod assembly.

[0011] In this embodiment, the flexible cover assembly further includes a first support rope and a second support rope. The first support rope is connected between the first side plate and the second side plate on the same first side, and the second support rope is connected between the first side plate and the second side plate on the same second side. The first cover is threaded on the first support rope and its lower end is connected to the hopper base, and the second cover is threaded on the second support rope and its lower end is connected to the hopper base.

[0012] In this embodiment, the folding grain bin also includes a conveying mechanism, which includes a fixed conveying pipe section and a folding conveying pipe section that are interconnected. The folding conveying pipe section is located inside the folding grain bin and can rotate relative to the fixed conveying pipe section. The pivot axis of the folding conveying pipe section is parallel to the pivot axis of the first side plate and the second side plate. The folding grain bin also includes a synchronous push rod, one end of which is connected to the first side plate or the second side plate, and the other end of which is connected to the folding conveying pipe section.

[0013] In this embodiment, a fixed auger is provided in the fixed conveying pipe section, and a movable auger is provided in the folding conveying pipe section. The conveying mechanism also includes a reversing transmission pipe section connected between the fixed conveying pipe section and the folding conveying pipe section. A reversing gear set for changing the transmission direction is provided in the reversing transmission pipe section. The fixed auger and the movable auger are respectively connected to the reversing gear set for transmission.

[0014] To achieve the above objectives, this application also provides a harvester, wherein the harvester includes a folding grain bin as described above.

[0015] Through the above technical solution, the folding grain silo provided in this application embodiment has the following beneficial effects: By replacing some of the rigid movable side panels with flexible tarpaulins, the number of side panels is significantly reduced while ensuring the grain silo is completely enclosed. Reducing the number of side panels decreases the number of moving parts that the drive mechanism needs to operate, making operation easier, less strenuous, and smoother. Furthermore, the reduced number of side panels simplifies the design, manufacturing, and installation of the drive mechanism, and facilitates later maintenance. In addition, the lightweight nature of the tarpaulin also reduces the weight and cost of the folding grain silo.

[0016] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0017] The accompanying drawings are provided to illustrate the present application and form part of the specification. They are used together with the following detailed description to explain the present application, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a structural schematic diagram from a first-view perspective of the folding grain warehouse in the unfolded posture according to the embodiments of this application; Figure 2 This is a structural schematic diagram from a second perspective of the folding grain warehouse in the unfolded posture according to the embodiments of this application; Figure 3 This is a structural schematic diagram of the linkage assembly according to the embodiments of this application; Figure 4 This is a structural schematic diagram from a third-person perspective of the folding grain silo in the unfolded posture according to the embodiments of this application.

[0018] Explanation of reference numerals in the attached figures 1. Silo base; 2. Side plate assembly; 21. First side plate; 22. Second side plate; 3. Flexible cover assembly; 31. First cover; 32. First support rope; 33. Second support rope; 4. Drive mechanism; 41. Push-pull drive assembly; 411. Rotating shaft; 411a. First rod joint; 411b. Second rod joint; 42. Linkage assembly; 421. Rod body; 422. First rod head; 423. Second rod head; 424. Universal hinge component; 425. Locking nut; 5. Conveying mechanism; 51. Fixed conveying pipe section; 52. Folding conveying pipe section; 53. Fixed auger; 54. Movable auger; 55. Reversing transmission pipe section; 56. Reversing gear set; 57. Pressure plate assembly; 58. Power mechanism; 61. Synchronous push rod; 62. Bolt mounting seat; 7. Crop lifting mechanism. Detailed Implementation

[0019] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this application.

[0020] The folding grain silo of this application is described below with reference to the accompanying drawings.

[0021] To address the increasing demand for higher-yield and mechanized agricultural development leading to larger grain bin volumes in harvesters, while avoiding excessive increases in overall machine size that could compromise maneuverability, folding grain bin technology has emerged. Existing folding grain bins utilize multiple movable side panels, which are unfolded and folded together by a drive mechanism 4 to create an expanded storage space.

[0022] However, during the application of the technology and the refinement of the design, engineers realized that multiple movable side plates would bring a series of negative effects to the side plate drive mechanism. Specifically, driving the coordinated movement of multiple side plates requires a lengthy multi-stage transmission chain (power needs to be transmitted layer by layer through hydraulic cylinders, connecting rods, gears, etc.) and precise and complex connection methods (such as multi-hinge linkage and synchronization mechanisms). This negative effect not only significantly increases the difficulty of mechanism design and requires precise kinematic and dynamic analysis, but also places stringent requirements on the machining accuracy of parts and the assembly process of the whole machine, resulting in a significant increase in manufacturing costs and the potential for multiple failure points and difficult maintenance.

[0023] In view of this, this application provides a folding grain silo, such as Figure 1 As shown, in this embodiment, the folding grain silo includes a silo base 1, a side plate assembly 2, a flexible cover assembly 3, and a drive mechanism 4.

[0024] The base 1 can be part of the harvester's body, that is, the folding grain bin can use part of the harvester's body as the base 1.

[0025] The side panel assembly 2 includes a first side panel 21 and a second side panel 22 that are pivotally mounted on the storage base 1 at a relative interval. The pivot axes of the first side panel 21 and the second side panel 22 are parallel, and the first side panel 21 and the second side panel 22 are respectively able to flip from a folded posture attached to the storage base 1 to an upright posture.

[0026] The flexible cover assembly 3 includes a first cover 31 and a second cover (not shown in the figure). The two sides of the first cover 31 are connected to the first side of the first side plate 21 and the second side plate 22 in the same direction, respectively. The two sides of the second cover are connected to the second side of the first side plate 21 and the second side plate 22 in the same direction, respectively. When the first side plate 21 and the second side plate 22 are in a folded state, the first cover 31 and the second cover will also be in a folded state. When the first side plate 21 and the second side plate 22 are flipped to an upright state, the first cover 31 and the second cover will be opened. At this time, the first side plate 21, the second side plate 22, the first cover 31 and the second cover together form the side wall of the folded grain warehouse.

[0027] The drive mechanism 4 is used to drive the first side plate 21 and the second side plate 22 to rotate in a coordinated manner.

[0028] By replacing some of the rigid movable side panels with flexible tarpaulins, the number of side panels is significantly reduced while ensuring the grain silo is enclosed on all four sides. Reducing the number of side panels decreases the number of moving parts that the drive mechanism 4 needs to move, making it easier and less strenuous to operate, and resulting in smoother movements. At the same time, the reduction in the number of side panels makes the design, manufacturing, and installation of the drive mechanism 4 easier, and facilitates later maintenance. Furthermore, the lightweight nature of the tarpaulin also reduces the weight and cost of the folding grain silo.

[0029] like Figure 1 and Figure 2 As shown, in this embodiment, the drive mechanism 4 includes a push-pull drive assembly 41 and a connecting rod assembly 42. One end of the connecting rod assembly 42 is hinged to the push-pull drive assembly 41, and the other end of the connecting rod assembly 42 is hinged to the first side plate 21 or the second side plate 22. The push-pull drive assembly 41 is used to pull down and push up the connecting rod assembly 42 to drive the corresponding connected first side plate 21 or second side plate 22 to flip.

[0030] By pulling down the connecting rod assembly 42 through the push-pull drive assembly 41, the corresponding first side plate 21 or second side plate 22 can be flipped into a folded posture, while by pushing up the connecting rod assembly 42 through the push-pull drive assembly 41, the corresponding first side plate 21 or second side plate 22 can be flipped into an upright posture.

[0031] In this embodiment, there are many ways to realize the downward and upward movement of the connecting rod assembly 42, such as using a hydraulic cylinder, electric cylinder, etc. to linearly pull the connecting rod assembly 42 up and down, or imitating the crank-connecting rod mechanism of an engine to convert the rotational motion of the shaft into the up and down movement of the connecting rod assembly 42.

[0032] It should be noted that the flipping of the first side plate 21 and the second side plate 22 towards an upright posture as described in this embodiment can mean that after the first side plate 21 and the second side plate 22 are flipped into position, the first side plate 21 and the second side plate 22 are in a completely upright state, or after the first side plate 21 and the second side plate 22 are flipped into position, the first side plate 21 and the second side plate 22 are tilted inward or outward. The up-and-down movement of the linkage assembly 42 can be that the linkage assembly 42 pushes and pulls the side plate vertically upward or vertically downward, or the linkage assembly 42 pushes and pulls the side plate at an angle with the general direction of movement of the linkage assembly 42 being up and down.

[0033] In existing designs of the drive mechanism 4 for folding grain bins, using linkages to achieve the standing (upright) and falling (folding) of the side panels is a widely used and mature technology. While this type of transmission architecture is simple in design, low in manufacturing cost, and stable in transmission, it also has some drawbacks. For example, minute dimensional deviations in the linkage components or minor assembly errors in the side panels can easily cause the side panels' movement trajectory to deviate from the design expectation. To achieve precise standing / falling of the side panels, existing technologies strictly control the machining dimensional accuracy of each linkage component 42 and the relative positional accuracy of the hinge points of each side panel. Therefore, the installation and debugging of this type of transmission architecture is very troublesome.

[0034] In this embodiment, based on the use of a linkage assembly transmission, the length of the linkage assembly 42 can be set to be adjustable. After the push-pull drive assembly 41 and the side plate are installed on the silo base 1, since the length of the linkage assembly 42 is adjustable, during on-site debugging, only a slight adjustment of the length of the linkage assembly 42 is needed to adjust the correspondence between the pull-down position of the push-pull drive assembly 41 and the flip position of the side plate. Thus, when the push-pull drive assembly 41 moves to a specific position, through the deterministic transmission of the linkage assembly 42, the driven side plate can move accurately to the preset target position of fully unfolded (erected) or fully folded (collapsed). Unlike traditional high-precision linkage transmissions, there is no need to repeatedly adjust the length of the linkage or the hinge position of the side plate during debugging, greatly simplifying the assembly process of the folding grain silo.

[0035] In this embodiment, the length of the connecting rod assembly 42 can be adjusted using a threaded screw structure. For example... Figure 2 and Figure 3 As shown, the connecting rod assembly 42 may include a rod body 421 and a first rod head 422 and a second rod head 423 respectively disposed at both ends of the rod body 421. The first rod head 422 may have a screw portion at one end for connecting to the rod body 421. The rod body 421 is provided with a corresponding screw hole for threaded engagement with the screw portion. By controlling the screw portion to screw in and out of the screw hole, the length of the connecting rod assembly 42 can be adjusted.

[0036] Of course, in this embodiment, the screw hole can also be formed on the first rod head 422, and the screw can be formed on the rod body 421. Alternatively, a similar threaded screw structure can also be formed between the second rod head 423 and the rod body.

[0037] like Figure 2 and Figure 3 As shown, in this embodiment, a locking nut 425 can also be provided between the screw and the screw hole. The locking nut 425 can lock the length of the connecting rod assembly 42 after the length of the connecting rod assembly 42 is adjusted to the correct position.

[0038] In this embodiment, the linkage assembly 42 can also achieve length adjustment by means of other methods, such as multi-stage sleeve sliding + locking, pin fixing different hole positions, gear and rack engagement, etc.

[0039] In this embodiment, the coordinated flipping of the first side panel 21 and the second side panel 22 can refer to their synchronous mirror flipping, or their sequential unfolding and folding. To ensure that the first cover 31 and the second cover can be smoothly folded and unfolded, the folding direction of the first side panel 21 and the second side panel 22 is preferably their opposite folding direction.

[0040] like Figure 1 and Figure 2 As shown, in this embodiment, the push-pull drive assembly 41 may include a rotating shaft 411 and a rotary drive member for driving the rotating shaft 411 to rotate. The rotating shaft 411 extends along the opposite direction of the first side plate 21 and the second side plate 22, and a first rod connection portion 411a and a second rod connection portion 411b are formed on the peripheral wall of the rotating shaft 411. The first rod connection portion 411a and the second rod connection portion 411b are spaced apart and aligned in the opposite direction. The first rod connection portion 411a is disposed near the first side plate 21 and is hinged to the first side plate 21 with a connecting rod assembly 42. The second rod connection portion 411b is disposed near the second side plate 22 and is hinged to the second side plate 22 with a connecting rod assembly 42. When the rotating shaft 411 rotates, the first rod joint 411a and the second rod joint 411b will push and pull the corresponding connecting rod assembly 42 respectively. During the pushing and pulling process, by setting the connection method of the two ends of the connecting rod assembly 42 to be hinged, the tilting posture of the connecting rod assembly 42 can be adaptively changed to match the change in orientation between the connection points on the two parts when the rotating shaft 411 and the side plate are flipped.

[0041] In this embodiment, the connection at the end of the connecting rod assembly 42 can be configured as a single-axis hinge or a universal hinge, depending on the transmission requirements. For example... Figure 3 As shown, universal joint components 424 can be respectively provided on the first rod head 422 and the second rod head 423. The universal joint component 424 can be a spherical bearing or a universal joint bearing.

[0042] In this embodiment, the rod body 421 can be a hollow tube to reduce the overall weight of the connecting rod assembly 42.

[0043] In this embodiment, a radially extending rocker arm may also be provided at the end of the rotating shaft 411. The rotation drive can be a hydraulic cylinder, pneumatic cylinder, electric cylinder, etc., used to drive the rocker arm to rotate around the rotating shaft 411. Of course, the rotation drive can also be a motor that directly drives the rotating shaft 411 to rotate.

[0044] like Figure 1 and Figure 2 As shown, in this embodiment, the flexible cover assembly 3 further includes a first support rope 32 and a second support rope 33. The first support rope 32 is connected between the first side plate 21 and the second side plate 22 on their respective first sides, and the second support rope 33 is connected between the first side plate 21 and the second side plate 22 on their respective second sides. The first cover 31 is threaded through the first support rope 32, and the second cover 33 is threaded through the second support rope 33. When the first side plate 21 and the second side plate 22 are flipped to an upright position, the first support rope 32 and the second support rope 33 are gradually tightened. The first support rope 32 and the second support rope 33 can guide the opening path of the first cover 31 and the second cover 32 when they are pulled apart, thereby ensuring that the cover 31 can be smoothly unfolded. At the same time, the first support rope 32 and the second support rope 33 can also support the upper end of the cover 31 and the second cover 32 to prevent the upper end of the first cover 31 and the second cover 32 from collapsing and affecting the unfolding effect of the folding grain bin. In order to ensure the airtightness of the covering cloth in enclosing the folded grain silo and to prevent grain leakage, the lower ends of the first covering cloth 31 and the second covering cloth are preferably connected to the silo base 1 respectively.

[0045] like Figure 1 and Figure 4 As shown, in this embodiment, the folding grain bin also includes a conveying mechanism 5, through which harvested crops can be conveyed into the folding grain bin.

[0046] like Figure 1 and Figure 4 As shown, in this embodiment, the conveying mechanism 5 includes a fixed conveying pipe section 51 and a folding conveying pipe section 52 that are interconnected. The folding conveying pipe section 52 is located between the first side plate 21 and the second side plate 22. When the folding grain bin is unfolded, the folding conveying pipe section 52 will be located inside the folding grain bin. The folding conveying pipe section 52 is rotatable relative to the fixed conveying pipe section 51. The pivot axis of the folding conveying pipe section 52 is parallel to the pivot axes of the first side plate 21 and the second side plate 22. The driving mechanism 4 also includes a synchronous push rod 61. One end of the synchronous push rod 61 is connected to one of the first side plate 21 or the second side plate 22, and the other end of the synchronous push rod 61 is connected to the folding conveying pipe section 52.

[0047] When the first side plate 21 and the second side plate 22 are folded together, the corresponding connected side plate 21 or the second side plate 22 will push the folded conveying pipe section 52 to rotate relative to the fixed conveying pipe section 51 through the synchronous push rod 61, thereby realizing the synchronous folding of the folded conveying pipe section 52 with the side plate. When the first side plate 21 and the second side plate 22 are unfolded, the synchronous push rod 61 will pull the folded conveying pipe section 52 to rotate towards an upright position. By adjusting the folded conveying pipe section 52 to an upright position, when the harvester conveys crops to the folded grain bin, the crop spreading inlet can be as close as possible to the top of the folded grain bin, thereby ensuring that the crops can be evenly spread in all directions within the folded grain bin.

[0048] In this embodiment, the connection form of the synchronous push rod 61 can be the same as that of the connecting rod assembly 42. That is, both ends of the synchronous push rod 61 can be hinged to the side plate and the peripheral wall of the folding conveying pipe section 52, respectively, and the synchronous push rod 61 can also have a length adjustment function like the connecting rod assembly 42.

[0049] like Figure 4 As shown, in this embodiment, the fixed conveying pipe section 51 is also provided with a pressure plate assembly 57, which is used to limit the folding conveying pipe section 52 when it rotates to a preset position in an upright posture.

[0050] like Figure 4 As shown, in this embodiment, the fixed conveying pipe section 51 is provided with a secondary conveying input port at the end away from the folded conveying pipe section 52, and the input port is connected to the output end of the crop lifting mechanism 7 on the harvester.

[0051] like Figure 4 As shown, in this embodiment, a fixed auger 53 is provided in the fixed conveying pipe section 51, and a movable auger 54 is provided in the folding conveying pipe section 52. The conveying mechanism 5 also includes a reversing transmission pipe section 55 connected between the fixed conveying pipe section 51 and the folding conveying pipe section 52. The reversing transmission pipe section 55 is provided with a reversing gear set 56 for changing the transmission direction. The fixed auger 53 and the movable auger 54 are respectively connected to the reversing gear set 56 for transmission. Through the reversing gear set 56, when the folding conveying pipe section 52 rotates to any angle relative to the fixed conveying pipe section 51, the fixed auger 53 and the movable auger 54 can transmit power normally.

[0052] like Figure 4 As shown, in this embodiment, the fixed conveying pipe section 51 is provided with a power mechanism 58 for driving the fixed auger 53 to rotate at the end away from the folded conveying pipe section 52. Through the power mechanism 58, the transmission of the fixed auger 53-reversing gear set 56-movable auger 54 can be realized.

[0053] To achieve the above objectives, this application also provides a harvester, wherein the harvester includes a folding grain silo as described above. Since the harvester adopts all the technical solutions of the above embodiments, it at least possesses the beneficial effects brought by the above embodiments, and will not be repeated here.

[0054] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0055] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, a communication connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0056] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0057] Although embodiments of this application have been described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A folding grain silo, characterized in that, The folding grain silo includes: Storage base (1); The side panel assembly (2) includes a first side panel (21) and a second side panel (22) pivotally mounted on the storage base (1) at a relative interval. The pivot axes of the first side panel (21) and the second side panel (22) are parallel, and the first side panel (21) and the second side panel (22) are respectively able to flip from a folded posture attached to the storage base (1) to an upright posture. The flexible cover assembly (3) includes a first cover (31) and a second cover, wherein the first cover (31) is connected to the first side plate (21) and the second side plate (22) in the same direction on a first side, and the second cover is connected to the first side plate (21) and the second side plate (22) in the same direction on a second side. The drive mechanism (4) is used to drive the first side plate (21) and the second side plate (22) to rotate in a coordinated manner.

2. The foldable silo of claim 1, wherein, The drive mechanism (4) includes a push-pull drive assembly (41) and a linkage assembly (42). The length of the linkage assembly (42) is adjustable and one end is hinged to the push-pull drive assembly (41). The other end of the linkage assembly (42) is hinged to the first side plate (21) or the second side plate (22). The push-pull drive assembly (41) is used to pull down and push up the linkage assembly (42) to drive the corresponding connected first side plate (21) or second side plate (22) to flip.

3. The fold silo of claim 2, wherein, The connecting rod assembly (42) includes a rod body (421) and a first rod head (422) and a second rod head (423) respectively disposed at both ends of the rod body (421). The first rod head (422) and the second rod head (423) are respectively provided with universal hinge components (424). The first rod head (422) and the rod body and / or the second rod head (423) and the rod body are respectively provided with threaded screw structures for adjusting the length.

4. The folding grain silo according to claim 3, characterized in that, The connecting rod assembly (42) also includes a lock nut (425) for locking the threaded screw structure.

5. The fold silo of claim 2, wherein, The first side plate (21) and the second side plate (22) are respectively connected to the push-pull drive assembly (41) through their respective connecting rod assemblies (42). The push-pull drive assembly (41) is used to synchronously pull down or push up the connecting rod assembly (42) to synchronously drive the first side plate (21) and the second side plate (22) to rotate in a mirror image.

6. The folding grain silo according to claim 5, characterized in that, The push-pull drive assembly (41) includes a rotating shaft (411) and a rotary drive member for driving the rotating shaft (411) to rotate. The rotating shaft (411) extends along the opposite direction of the first side plate (21) and the second side plate (22), and a first rod joint (411a) and a second rod joint (411b) are formed on the peripheral wall of the rotating shaft (411). The first rod joint (411a) and the second rod joint (411b) are spaced apart and aligned in the opposite direction. The first rod joint (411a) is disposed close to the first side plate (21) and is connected to the first side plate (21) by the connecting rod assembly (42). The second rod joint (411b) is disposed close to the second side plate (22) and is connected to the second side plate (22) by the connecting rod assembly (42).

7. The folding grain silo according to any one of claims 1 to 6, characterized in that, The flexible cover assembly (3) further includes a first support rope (32) and a second support rope (33). The first support rope (32) is connected between the first side plate (21) and the second side plate (22) on the same first side. The second support rope (33) is connected between the first side plate (21) and the second side plate (22) on the same second side. The first cover (31) is threaded on the first support rope (32) and its lower end is connected to the hopper base (1). The second cover is threaded on the second support rope (33) and its lower end is connected to the hopper base (1).

8. The folding grain silo according to any one of claims 1 to 6, characterized in that, The folding grain silo also includes a conveying mechanism (5), which includes a fixed conveying pipe section (51) and a folding conveying pipe section (52) that are interconnected. The folding conveying pipe section (52) is located inside the folding grain silo and can rotate relative to the fixed conveying pipe section (51). The pivot axis of the folding conveying pipe section (52) is parallel to the pivot axis of the first side plate (21) and the second side plate (22). The folding grain silo also includes a synchronous push rod (61), one end of which is connected to the first side plate (21) or the second side plate (22), and the other end of which is connected to the folding conveying pipe section (52).

9. The folding grain silo according to claim 8, characterized in that, The fixed conveying pipe section (51) is provided with a fixed auger (53), the folded conveying pipe section (52) is provided with a movable auger (54), and the conveying mechanism (5) further includes a reversing transmission pipe section (55) connected between the fixed conveying pipe section (51) and the folded conveying pipe section (52). The reversing transmission pipe section (55) is provided with a reversing gear set (56) for changing the transmission direction. The fixed auger (53) and the movable auger (54) are respectively connected to the reversing gear set (56) for transmission.

10. A harvester, characterized in that, The harvester includes a folding grain bin as described in any one of claims 1 to 9.

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