Foldable grain conveying device

Abstract

The utility model relates to the field of grain conveying equipment, and discloses a foldable grain conveying device which comprises two first frames, second frames are arranged on the right side walls of the two first frames, and folding mechanisms are arranged at the bottoms of the right side walls of the two first frames and the bottoms of the left side walls of the second frames. The folding mechanism comprises two hinges, two first supporting plates, two connecting blocks and two gaskets. The left sides and the right sides of the bottoms of the two hinges are in threaded connection with the top of the left side wall of the first frame and the top of the right side wall of the second frame. By arranging the folding mechanism, the problems that the time and labor cost for mounting and dismounting are increased, and the space utilization rate is reduced can be solved, the supporting rod is pushed to slide in the second spring, and therefore the device can bear various forces and weights in the grain conveying process, and the grain conveying efficiency is improved. Therefore, the occupied area is effectively reduced, and the overall use efficiency of the space is improved.

Description

Technical Field

[0001] This utility model relates to the field of grain conveying equipment, and in particular to a foldable grain conveying device. Background Technology

[0002] A grain conveying device is a piece of equipment used for the efficient transfer of grain in grain production, processing, storage, and logistics. Its purpose is to move grain from one place to another, improving operational efficiency and reducing labor costs. It uses a conveyor belt as the component that carries and transports the grain, relying on the friction between the drive rollers and the conveyor belt to propel it forward and achieve grain transport.

[0003] When grain conveying equipment is idle, its large size occupies a significant amount of storage space. In space-constrained grain depots and processing plants, this can cause inconvenience to other equipment storage and material stacking. Furthermore, installation and dismantling may require more steps and tools, increasing time and labor costs, reducing equipment efficiency, and causing considerable inconvenience and space utilization. In grain storage facilities requiring docking with silos and transport vehicles of varying heights, the conveying equipment struggles to precisely align with their inlets or outlets. This prevents the conveying device from adjusting its height according to terrain, leading to spillage and accumulation of grain during transport, affecting the smoothness and accuracy of the process and ultimately impacting the efficiency of the entire grain handling process. Utility Model Content

[0004] The main purpose of this utility model is to provide a foldable grain conveying device, which can effectively solve the problems of increased installation and disassembly time and labor costs, reduced equipment efficiency, great inconvenience, reduced space utilization, and grain spillage and accumulation during the conveying process, affecting the smoothness and accuracy of the conveying and the efficiency of the entire grain processing process.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a foldable grain conveying device, comprising two first frames, a second frame provided on the right side wall of each of the two first frames, and a folding mechanism provided at the bottom of the right side wall of each of the two first frames and the bottom of the left side wall of each of the two second frames.

[0006] The folding mechanism includes two hinges, two first support plates, two connecting blocks, and two gaskets. The bottom left and right sides of the two hinges are threaded to the top of the left side wall of the first frame and the top of the right side wall of the second frame. The outer sides of the two first support plates are fixedly connected to the bottom of the right side wall of the two first frames. Two locking blocks are fixedly connected to the right side wall of each first support plate. The outer sides of the two connecting blocks are fixedly connected to the bottom of the left side wall of the two second frames. Each connecting block has a placement groove inside. Two support rods are slidably connected to the front and rear sides of each connecting block. Two first springs are fixedly connected to the rear side wall of each support rod.

[0007] Furthermore, each set of four first springs is fixedly connected to the front and rear sides of the interior of a connecting block, and each set of slots is fixedly connected to two second springs. The other end of each set of two second springs is fixedly connected to a baffle, and the top of the left side wall of each set of two second frames is fixedly connected to a gasket.

[0008] Furthermore, a protective box is fixedly connected to the front side wall of the first frame at the front, and rollers are rotatably connected to the inner left side of the two first frames and the inner right side of the two second frames. A conveyor belt is provided on the outer side of the two rollers, and a support column is rotatably connected to the inner side of the two first frames and the two second frames. The outer side of the two support columns is located in the middle of the inner side of the conveyor belt.

[0009] Furthermore, a chain is installed inside the protective box, and a first motor is installed on the right side inside the protective box. A rotating rod is fixedly connected to the output end of the first motor, and a first sprocket is fixedly connected to the outer rear end of the rotating rod. A second sprocket is fixedly connected to the inner front end of the roller on the left side. The outer sides of the first sprocket and the second sprocket mesh with the inside of the chain.

[0010] Furthermore, a second support plate is fixedly connected to the bottom of each of the two first frames and the second frame, a hinge frame is fixedly connected to the bottom of the second support plate on the left side, a base box is provided at the bottom of each of the two first frames, a caster wheel is fixedly connected to the bottom of each base box, and a second motor is provided on the right side inside the base box.

[0011] Furthermore, a lead screw is fixedly connected to the output end of the second motor, and a fixed ring is rotatably connected to the outer side of the left end of the lead screw. The outer side of the left end of the fixed ring is fixedly connected to the inner left side of the base box. A threaded sleeve is slidably connected to the outer side of the lead screw, and a connecting column is fixedly connected to the outer side of the threaded sleeve. A first support rod is rotatably connected to the outer side of the connecting column.

[0012] Furthermore, a connecting rod is rotatably connected inside the top wall of the first support rod, and both the front and rear sides of the connecting rod are slidably connected to the slide groove of the hinge frame. A second support rod is rotatably connected to the middle of the first support rod, and a connecting plate is fixedly connected to the left side of the bottom box. The left side of the second support rod is rotatably connected to the inside of the connecting plate.

[0013] Furthermore, the bottom wall of the second support plate on the right side is fixedly connected to a hinge frame, and the hinge frame is rotatably connected to a bracket, and the bottom wall of the bracket is fixedly connected to an anti-slip pad.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. This utility model, through its folding mechanism, solves the problems of increased installation and disassembly time and labor costs, reduced equipment efficiency, significant inconvenience, and reduced space utilization. By pushing the support rod to slide inside the second spring, it compresses the first spring. When the locking block pushes the support rod, it contacts the baffle, compressing the second spring and opening the placement slot. When the locking block is fully inserted into the placement slot, the first spring releases pressure, causing the support rod to spring back, inserting the left side of the support rod into the slot of the locking block, thus fixing the locking block inside the connecting block. This also secures the first and second frames after they are unfolded, ensuring the structural stability of the entire device in its unfolded state. This allows the device to withstand various forces and weights during grain transport, effectively reducing the floor space occupied and improving overall space utilization efficiency.

[0016] 2. By incorporating a base box, a second motor, a lead screw, a threaded sleeve, a connecting rod, a hinge frame, a support, and anti-slip pads, the system effectively addresses the issues of grain spillage and accumulation during transport, which negatively impact the smoothness and accuracy of the transport process and the overall efficiency of the grain handling workflow. The first support rod is rotatably connected to the second support rod at its center, and the left side of the second support rod is rotatably connected to a connecting plate on the left side inside the base box. When the first support rod moves with the threaded sleeve, the second support rod provides auxiliary support and guidance. Through the cooperation of these two support rods, the horizontal movement of the threaded sleeve is transformed into the overall height adjustment of the first and second frames, effectively improving working comfort and efficiency, and making the grain transport process smoother.

[0017] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0018] Figure 1 This is a first frame structure diagram of a foldable grain conveying device proposed in this utility model;

[0019] Figure 2 This is a folding diagram of a foldable grain conveying device proposed in this utility model;

[0020] Figure 3 This is a second frame structure diagram of a foldable grain conveying device proposed in this utility model;

[0021] Figure 4 This is a structural diagram of the connecting block of a foldable grain conveying device proposed in this utility model;

[0022] Figure 5 This is a cross-sectional view of the internal structure of the connecting block of a foldable grain conveying device proposed in this utility model.

[0023] Figure 6 This is a structural diagram of the support rod of a foldable grain conveying device proposed in this utility model;

[0024] Figure 7 This is a schematic diagram of the bottom box of a foldable grain conveying device proposed in this utility model;

[0025] Figure 8 This is a structural diagram of the roller of a foldable grain conveying device proposed in this utility model;

[0026] Figure 9 This is a chain structure diagram of a foldable grain conveying device proposed in this utility model;

[0027] Figure 10 This is a structural diagram of the second support rod of a foldable grain conveying device proposed in this utility model;

[0028] Figure 11 This is a schematic diagram of the screw structure of a foldable grain conveying device proposed in this utility model.

[0029] Legend:

[0030] 1. First frame; 2. Second frame; 3. Folding mechanism; 301. Hinge; 302. First support plate; 303. Locking block; 304. Connecting block; 305. Placement slot; 306. Support rod; 307. First spring; 308. Second spring; 309. Baffle; 310. Gasket; 4. Protective box; 5. Roller; 6. Conveyor belt; 7. Support column; 8. Chain; 9. First motor; 10. Rotating rod; 11. First sprocket; 12. Second sprocket; 13. Second support plate; 14. Hinge frame; 15. Base box; 16. Caster wheel; 17. Second motor; 18. Lead screw; 19. Fixing ring; 20. Threaded sleeve; 21. Connecting column; 22. First support rod; 23. Connecting rod; 24. Second support rod; 25. Connecting plate; 26. Hinge frame; 27. Bracket; 28. Anti-slip mat. Detailed Implementation

[0031] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0032] like Figure 1 - Figure 6 As shown: A foldable grain conveying device includes two first frames 1, and a second frame 2 is provided on the right side wall of each of the two first frames 1. The conveyor belt 6 is supported by the first frames 1 and the second frames 2. Folding mechanisms 3 are provided at the bottom of the right side wall of each of the two first frames 1 and the bottom of the left side wall of each of the two first frames 2.

[0033] The folding mechanism 3 includes two hinges 301, two first support plates 302, two connecting blocks 304, and two gaskets 310. The bottom left and right sides of the two hinges 301 are threaded to the top of the left side wall of the first frame 1 and the top of the right side wall of the second frame 2. By fixing the two hinges 301 to the top of the left side wall of the first frame 1 and the top of the right side wall of the second frame 2, the first frame 1 and the second frame 2 can rotate relative to each other about the hinge axis.

[0034] The outer sides of the two first support plates 302 are fixedly connected to the bottom of the right side wall of the two first frames 1. Each first support plate 302 has two locking blocks 303 fixedly connected to the right side wall. The first support plates 302 are fixed to the bottom of the left side wall of the first frame 1 and the locking blocks 303 are connected so that after the first frame 1 and the second frame 2 are unfolded, they are connected to the device at the bottom right side of the second frame 2, so that the planes of the first frame 1 and the second frame 2 after unfolding are fixed.

[0035] The outer sides of the two connecting blocks 304 are fixedly connected to the bottom of the left side walls of the two second frames 2. Each connecting block 304 has a placement groove 305 inside. Two support rods 306 are slidably connected to the front and rear sides of each connecting block 304. Two first springs 307 are fixedly connected to the rear side wall of each support rod 306. Every four first springs 307 are fixedly connected to the front and rear sides inside the connecting block 304. Two second springs 308 are fixedly connected inside the placement groove 305. A baffle 309 is fixedly connected to the other end of every two second springs 308. When unfolded, the locking block 303 on the right side of the first frame 1 will enter the placement groove 305 inside the connecting block 304. After the locking block 303 enters the placement groove 305, the locking block 303... The latch 303 will contact the left side of the support rod 306 and push the support rod 306 to slide inside the connecting block 304, thereby squeezing the first spring 307. When the latch 303 pushes the support rod 306, it will contact the baffle 309 to squeeze the second spring 308, causing the interior of the placement slot 305 to open. When the latch 303 is fully inserted into the interior of the placement slot 305, the first spring 307 will release pressure, causing the support rod 306 to rebound, so that the left side of the support rod 306 is inserted into the hole slot of the latch 303, thereby fixing the latch 303 inside the connecting block 304, and fixing the first frame 1 and the second frame 2 after unfolding the plane, ensuring that the structure of the entire device is firm in the unfolded state, so that the device can bear various forces and weights during the grain conveying process.

[0036] Each of the two second frames 2 has a pad 310 fixedly connected to the top of its left side wall. When the device is folded, the pad 310 will contact the top right side of the first frame 1 to support the left side of the second frame 2.

[0037] like Figure 1 - Figure 9 As shown, a protective box 4 is fixedly connected to the front side wall of a first frame 1 at the front, and the protective box 4 is used to protect the internal device from the outside.

[0038] Rollers 5 are rotatably connected to the inner left side of the two first frames 1 and the inner right side of the two second frames 2. A conveyor belt 6 is provided on the outer side of the two rollers 5. Support columns 7 are rotatably connected to the inner sides of the two first frames 1 and the two second frames 2. The outer side of the two support columns 7 is located in the middle of the inner side of the conveyor belt 6. When the left roller 5 is driven to rotate, sufficient friction is generated by the left roller 5 contacting the conveyor belt 6 to achieve the rotation of the conveyor belt 6. At the same time, the two support columns 7 in the middle of the conveyor belt 6 are fixed inside the first frame 1 and the second frame 2 respectively to support the middle of the conveyor belt 6.

[0039] The protective box 4 contains a chain 8. A first motor 9 is located on the right side of the protective box 4. A rotating rod 10 is fixedly connected to the output end of the first motor 9. A first sprocket 11 is fixedly connected to the outer rear end of the rotating rod 10. A second sprocket 12 is fixedly connected to the inner front end of the left roller 5. The outer sides of the first sprocket 11 and the second sprocket 12 mesh with the inside of the chain 8. When the first motor 9 inside the protective box 4 is started, the rotating rod 10 at the output end of the first motor 9 drives the first sprocket 11 to rotate. The first sprocket 11 meshes with the chain 8, causing the chain 8 to rotate. Simultaneously, the inner left side of the chain 8 meshes with the first sprocket 11, causing the first sprocket 11 to rotate synchronously. When the first sprocket 11 rotates, it eventually drives the left roller 5 to rotate.

[0040] like Figure 1 - Figure 11 As shown, the bottoms of the two first frames 1 and the second frame 2 are fixedly connected to the second support plate 13. The second support plate 13 at the bottom of the first frame 1 and the second frame 2 can fix the two first frames 1 and the second frame 2 together respectively, and connect the device at the bottom. The bottom wall of the second support plate 13 on the left is fixedly connected to the hinge frame 14. The device at the bottom is connected through the hinge frame 14 at the bottom of the second support plate 13 on the left, so that the device at the bottom can slide inside the hinge frame 14.

[0041] The bottom of each of the two first frames 1 is provided with a base box 15, and the bottom of each base box 15 is fixedly connected with a caster wheel 16. The caster wheel 16 at the bottom of the base box 15 enables the entire device to be moved easily. The caster wheel can rotate freely in all directions, and the operator can easily push the device to the designated position in the work area.

[0042] A second motor 17 is installed on the right side inside the base box 15. A lead screw 18 is fixedly connected to the output end of the second motor 17. A fixing ring 19 is rotatably connected to the outer side of the left end of the lead screw 18. The outer side of the left end of the fixing ring 19 is fixedly connected to the left side inside the base box 15. A threaded sleeve 20 is slidably connected to the outer side of the lead screw 18. A connecting column 21 is fixedly connected to the outer side of the threaded sleeve 20. A first support rod 22 is rotatably connected to the outer side of the connecting column 21. When it is necessary to raise the conveying device, the second motor 17 is started to rotate forward. The rotation of the lead screw 18 causes the threaded sleeve 20 to move to the left, driving the first support rod 22 to rotate upward around the connection point with the connecting column 21. At the same time, the second support rod 24 also rotates, thereby lifting the unfolded first frame 1 upward, increasing the height of the device. Conversely, when it is necessary to lower the height of the conveying device, the second motor 17 is started to rotate in reverse. The lead screw 18 rotates in the opposite direction, causing the threaded sleeve 20 to move to the right. The first support rod 22 and the second support rod 24 move in opposite directions, and the height of the device decreases.

[0043] like Figure 1 - Figure 11 As shown, a connecting rod 23 is rotatably connected inside the top wall of the first support rod 22. The front and rear sides of the connecting rod 23 are slidably connected to the grooves of the hinge frame 14. A second support rod 24 is rotatably connected to the middle of the first support rod 22. A connecting plate 25 is fixedly connected to the left side of the bottom box 15. The left side of the second support rod 24 is rotatably connected to the inside of the connecting plate 25. A hinge frame 26 is fixedly connected to the bottom wall of the second support plate 13 on the right side. A bracket 27 is rotatably connected inside the hinge frame 26. An anti-slip pad 28 is fixedly connected to the bottom wall of the bracket 27. When the device is moved to a suitable position, the bracket 27 is rotated and lowered around the hinge frame 26, so that the anti-slip pad 28 contacts the ground, increasing the friction with the ground and preventing the device from shifting due to vibration or other external forces during the grain conveying process, thus ensuring the stability of the device. In addition, when the height of the first frame 1 is adjusted, the bracket 27 provides bottom support for the second frame 2 on the right side.

[0044] It should be noted that this utility model is a foldable grain conveying device. First, the first motor 9 and the second motor 17 are connected to an external power supply and control terminal to supply power and control the device.

[0045] Two hinges 301 connect the top of the left side wall of the first frame 1 and the top of the right side wall of the second frame 2, respectively, allowing the first frame 1 and the second frame 2 to rotate relative to each other around the hinge axis. When a folding mechanism is needed, the two frames can rotate inward or outward around the hinge axis to achieve a preliminary folding action. The hinges provide a relatively stable rotational connection, ensuring the connection strength and rotational flexibility between the first frame 1 and the second frame 2.

[0046] When the foldable grain conveying device needs to be unfolded, the operator needs to rotate the first frame 1 and the second frame 2 outward around the axis of the hinge 301, so that the first frame 1 and the second frame 2 gradually unfold into a planar or near-planar state. During the unfolding process, with the relative movement of the first frame 1 and the second frame 2...

[0047] When unfolded to the appropriate position, the locking block 303 on the right side of the first frame 1 will enter the placement groove 305 inside the connecting block 304. After the locking block 303 enters the placement groove 305, it will contact the left side of the support rod 306 and push the support rod 306 to slide inside the connecting block 304, thereby squeezing the first spring 307. After the locking block 303 pushes the support rod 306, it will contact the baffle 309, thereby squeezing the second spring 308 and opening the interior of the placement groove 305. When the locking block 303 is fully inside the placement groove 305, the first spring 307 will release pressure, thereby causing the support rod 306 to rebound, so that the left side of the support rod 306 is inserted into the hole groove of the locking block 303, thereby fixing the locking block 303 inside the connecting block 304 and fixing the first frame 1 and the second frame 2 after unfolding, ensuring that the structure of the entire device is firm in the unfolded state, so that the device can bear various forces and weights during the grain conveying process.

[0048] When the device needs to be folded and stored, the operator first presses the support rods 306 on both sides of the connecting block 304, causing the support rods 306 to slide inside the connecting block 304, thereby compressing the first spring 307. At the same time, the left side of the support rod 306 will disengage from the slot of the locking block 303, thus releasing the locking block 303 from its fixation. After release, the second frame 2 is rotated upwards using the hinge 301, and the placement slot 305 is released to reset the device and prevent the locking block 307 from being locked. 3. The second frame 2 is fully inserted into the placement slot 305, and half of the locking block 303 remains inside the placement slot 305. When the second frame 2 rotates upward halfway, the locking block 303 will completely disengage from the placement slot 305. After leaving the placement slot 305, the second spring 308 inside the placement slot 305 will drive the baffle 309 to rebound, and the baffle 309 will seal the inside of the placement slot 305 to prevent impurities, dust, etc. from entering the inside of the placement slot 305.

[0049] The second support plates 13 at the bottom of the two first frames 1 and the second frame 2 directly support the frames. The casters 16 at the bottom of the base box 15 allow the entire device to be moved easily. The casters can rotate freely in all directions, and the operator can easily push the device to the designated location within the work area to meet the grain transportation needs of different locations.

[0050] The hinge frame 26 on the bottom wall of the second support plate 13 on the right side is connected to the bracket 27. The anti-slip pad 28 on the bottom wall of the bracket 27 plays an important role in the fixed operation of the device. After the device is moved to a suitable position, the bracket 27 is rotated around the hinge frame 26 and lowered, so that the anti-slip pad 28 contacts the ground, increasing the friction with the ground and preventing the device from shifting due to vibration or other external forces during the grain conveying process, thus ensuring the stability of the device.

[0051] When height adjustment is required, the second motor 17 starts, and its output drives the lead screw 18 to rotate. The left end of the lead screw 18 is stably connected to the left side of the bottom box 15 through a fixing ring 19, ensuring that the lead screw can only rotate around its own axis. The threaded sleeve 20 on the outside of the lead screw 18 forms a threaded engagement with the lead screw. When the lead screw rotates, the threaded sleeve 20 will slide left and right along the axial direction of the lead screw under the action of the thread. The connecting post 21 on the outside of the threaded sleeve 20 is rotatably connected to the first support rod 22, so the left and right movement of the threaded sleeve will drive the first support rod 22 to move. The connecting rod 23 inside the top wall of the first support rod 22 slides in the groove of the hinge frame 14 to restrict the movement trajectory of the first support rod 22, so that it can only rotate around the connection point with the connecting post 21 within a certain range.

[0052] Meanwhile, the middle part of the first support rod 22 is rotatably connected to the second support rod 24, and the left side of the second support rod 24 is rotatably connected to the connecting plate 25 on the left side inside the bottom box 15. When the first support rod 22 moves with the movement of the threaded sleeve 20, the second support rod 24 will play the role of auxiliary support and guidance. Through the cooperation of these two support rods, the horizontal movement of the threaded sleeve is converted into the overall height lifting movement of the first frame 1 and the second frame 2.

[0053] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A foldable grain conveying device, comprising two first frames (1), characterized in that: A second frame (2) is provided on the right side wall of each of the two first frames (1), and a folding mechanism (3) is provided at the bottom of the right side wall of each of the two first frames (1) and at the bottom of the left side wall of the second frame (2). The folding mechanism (3) includes: two hinges (301), two first support plates (302), two connecting blocks (304), and two gaskets (310). The bottom left and right sides of the two hinges (301) are threaded to the top of the left side wall of the first frame (1) and the top of the right side wall of the second frame (2). The outer sides of the two first support plates (302) are fixedly connected to the bottom of the right side wall of the two first frames (1). Two locking blocks (303) are fixedly connected to the right side wall of each first support plate (302). The outer sides of the two connecting blocks (304) are fixedly connected to the bottom of the left side wall of the two second frames (2). Each connecting block (304) has a placement groove (305) inside. Two support rods (306) are slidably connected to the front and rear sides of each connecting block (304). Two first springs (307) are fixedly connected to the rear side wall of each support rod (306).

2. The foldable grain conveying device according to claim 1, characterized in that: Four first springs (307) are fixedly connected to the front and rear sides of the interior of a connecting block (304). Two second springs (308) are fixedly connected inside each placement slot (305). A baffle (309) is fixedly connected to the other end of each pair of second springs (308). A gasket (310) is fixedly connected to the top of the left side wall of each of the two second frames (2).

3. The foldable grain conveying device according to claim 1, characterized in that: A protective box (4) is fixedly connected to the front side wall of the first frame (1). Rollers (5) are rotatably connected to the left side inside the two first frames (1) and the right side inside the two second frames (2). A conveyor belt (6) is provided on the outside of the two rollers (5). Support columns (7) are rotatably connected to the inside of the two first frames (1) and the two second frames (2). The outside of the two support columns (7) is located in the middle of the inside of the conveyor belt (6).

4. A foldable grain conveying device according to claim 3, characterized in that: The protective box (4) is equipped with a chain (8) inside. The protective box (4) is equipped with a first motor (9) on the right side inside. The output end of the first motor (9) is fixedly connected to a rotating rod (10). The outer side of the rear end of the rotating rod (10) is fixedly connected to a first sprocket (11). The front end of the roller (5) on the left side is fixedly connected to a second sprocket (12). The outer sides of the first sprocket (11) and the second sprocket (12) mesh with the inside of the chain (8).

5. A foldable grain conveying device according to claim 1, characterized in that: The bottom of each of the two first frames (1) and the second frame (2) is fixedly connected to a second support plate (13). The bottom wall of the second support plate (13) on the left side is fixedly connected to a hinge frame (14). The bottom of each of the two first frames (1) is provided with a base box (15). The bottom of each base box (15) is fixedly connected to a caster wheel (16). The right side of the inside of the base box (15) is provided with a second motor (17).

6. A foldable grain conveying device according to claim 5, characterized in that: The output end of the second motor (17) is fixedly connected to a lead screw (18). A fixing ring (19) is rotatably connected to the outer side of the left end of the lead screw (18). The outer side of the left end of the fixing ring (19) is fixedly connected to the inner left side of the base box (15). A threaded sleeve (20) is slidably connected to the outer side of the lead screw (18). A connecting column (21) is fixedly connected to the outer side of the threaded sleeve (20). A first support rod (22) is rotatably connected to the outer side of the connecting column (21).

7. A foldable grain conveying device according to claim 6, characterized in that: A connecting rod (23) is rotatably connected inside the top wall of the first support rod (22). The front and rear sides of the connecting rod (23) are slidably connected to the slide groove of the hinge frame (14). A second support rod (24) is rotatably connected to the middle of the first support rod (22). A connecting plate (25) is fixedly connected to the left side of the bottom box (15). The left side of the second support rod (24) is rotatably connected to the inside of the connecting plate (25).

8. A foldable grain conveying device according to claim 5, characterized in that: The bottom wall of the second support plate (13) on the right side is fixedly connected with a hinge frame (26), and the hinge frame (26) is rotatably connected with a bracket (27), and the bottom wall of the bracket (27) is fixedly connected with an anti-slip pad (28).

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