Portable hand corn sheller

Abstract

This utility model relates to the field of corn threshing, specifically a portable manual corn thresher, comprising a cylinder, a vertical drive mechanism on one side of the outer wall of the cylinder, the drive mechanism including a U-shaped frame, the upper end of the U-shaped frame extending to the top of the cylinder and fixedly mounted with a clamping cylinder, the lower end of the U-shaped frame extending into the interior of the cylinder and fixedly mounted with a spring cylinder, a limiting groove adapted to the size of the U-shaped frame being opened on the outer wall of the cylinder, a vertical limiting rod being provided on the inner wall of the limiting groove, one end of the U-shaped frame sliding vertically along the limiting rod, a threshing mechanism being provided at the top center of the cylinder, a connecting mechanism being provided between the lower end of the threshing mechanism and the drive mechanism, the connecting mechanism driving the threshing mechanism to rotate through the movement of the drive mechanism, in this utility model, the corn is always covered and guided by the clamping cylinder, the user does not need to directly hold the corn close to the threshing part, the threshing table is completely located inside the clamping cylinder, eliminating the risk of the hand and the blade running in close proximity.

Description

Technical Field

[0001] This utility model relates to the field of corn threshing, specifically a portable manual corn thresher. Background Technology

[0002] After harvesting and drying, corn should be threshed, stored, and processed in a timely manner. This reduces the space occupied during storage and is also beneficial for preservation and further processing. Large and medium-sized corn threshing equipment is suitable for large-scale, high-yield operations due to its high power consumption and limited applicability. Most areas of corn processing still require the use of small, manual threshers.

[0003] The utility model disclosed in CN221948791U is a food preparation mechanism and a food preparation device, which includes a lower body and an upper body disposed on the lower body. A rotating component for driving the upper body to rotate relative to the lower body is provided between the upper body and the lower body. A cutting component for cutting food is provided on the upward side of the upper body. Under the drive of the rotating component, the upper body rotates relative to the lower body, thereby driving the cutting component to rotate synchronously.

[0004] In practical use, the base of the corn kernel is aligned with and placed on the cutting edge of the cutting component. The upper body is then driven to rotate by the drive unit, causing the cutting component to rotate and cut the corn kernel, thus separating the kernel from the cob. Compared to the traditional method of manually rotating the thresher, this structure achieves automatic rotation via the drive unit, resulting in higher threshing efficiency and less labor required, thus improving the speed and convenience of corn threshing to a certain extent. In practical use, the above-mentioned technical solution still relies on the user holding the corn and driving the upper body to rotate through the rotating component, i.e., the drive component, so that the cutting component rotates and cuts the corn kernels. The toothed structure on the cutting component cuts and separates the corn kernels. During the threshing process, in order to ensure that the corn kernels at the top of the corn are fully removed, the user needs to constantly adjust and bring the corn closer to the cutting component, which causes the distance between the hand and the rotating cutting component to gradually decrease, posing a significant safety hazard. Especially under high-speed rotation or long-term operation, the risk of accidental contact or hand injury is more likely, which is not conducive to safe and reliable use. Therefore, we have proposed a portable manual corn thresher. Utility Model Content

[0005] The purpose of this invention is to provide a portable manual corn thresher to solve the problems mentioned in the background section.

[0006] To achieve the above objectives, a portable manual corn thresher includes a cylinder. A vertical drive mechanism is provided on one side of the outer wall of the cylinder. The drive mechanism includes a U-shaped frame. The upper end of the U-shaped frame extends to the top of the cylinder and is fixedly fitted with a clamping cylinder. The lower end of the U-shaped frame extends into the interior of the cylinder and is fixedly fitted with a spring cylinder. A limiting groove adapted to the size of the U-shaped frame is provided on the outer wall of the cylinder. A vertical limiting rod is provided on the inner wall of the limiting groove. One end of the U-shaped frame slides vertically along the limiting rod. A threshing mechanism is provided at the center of the top of the cylinder. A connecting mechanism is provided between the lower end of the threshing mechanism and the drive mechanism. The connecting mechanism drives the threshing mechanism to rotate through the movement of the drive mechanism, thereby threshing the corn.

[0007] Furthermore: the threshing mechanism includes a pelletizing table, the outer wall of which is fixedly connected with several extension rods, and the upper surface of the cylinder has several feed ports on the lower side of the extension rods.

[0008] Furthermore: the connecting mechanism includes a gear ring, which is fixedly connected to the bottom of the pelletizing table. One end of the gear ring is engaged with a gear rod, and the other end of the gear rod extends laterally to the outside of the cylinder and is engaged with a toothed belt. The toothed belt is arranged on the outer wall of the U-shaped frame.

[0009] Furthermore: the clamp cylinder is provided with an inner platform inside, the inner wall size of the clamp cylinder is larger than the outer wall size of the pelletizing table, and the outer wall size of the inner platform is smaller than the inner wall size of the pelletizing table.

[0010] Furthermore, the outer wall dimension of the movable end of the spring cylinder is lower than the inner wall dimension of the pelletizing table.

[0011] Furthermore, a discharge gate is provided at the bottom of the inner wall of the cylinder.

[0012] Furthermore, the outer wall of the cylinder is provided with an anti-pinch rod at the lower end of the gear rod.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. In this utility model, the corn is always covered and guided by the clamp, so the user does not need to hold the corn directly close to the cutting part. The cutting table is completely located inside the clamp, forming a physical isolation and eliminating the risk of the hand and the knife running in close proximity. 2. The corn remains coaxial under the axial force of the upper clamp and lower push. The pelleting table cuts the corn kernels in a circumferential manner by rotation, without relying on manual angle adjustment. Even when close to the top of the corn, the kernels can continue to be threshed under the protection of the clamp. 3. After threshing, simply pull the U-shaped frame in the opposite direction to remove the corn stalks as a whole, efficiently freeing up space inside the drum and avoiding secondary operations. Attached Figure Description

[0014] Figure 1 This is a schematic elevation view of the portable manual corn thresher of this utility model; Figure 2 This is a schematic diagram of the internal structure of the portable manual corn thresher of this utility model; Figure 3 This is a top view of the top of the cylinder of the portable manual corn thresher of this utility model.

[0015] In the diagram: 1. Cylinder; 2. Drive mechanism; 3. U-shaped frame; 4. Clamping cylinder; 5. Spring cylinder; 6. Limiting groove; 7. Limiting rod; 8. Threshing mechanism; 9. Connecting mechanism; 10. Pelletizing table; 11. Extension rod; 12. Feed inlet; 13. Gear ring; 14. Gear rod; 15. Gear belt; 16. Inner platform; 17. Discharge gate; 18. Anti-pinch rod. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-3 The figure shows a preferred embodiment of the present invention, a portable manual corn thresher, including a cylinder 1. A vertical drive mechanism 2 is provided on one side of the outer wall of the cylinder 1. The drive mechanism 2 includes a U-shaped frame 3. The upper end of the U-shaped frame 3 extends to the top of the cylinder 1 and is fixedly installed with a clamping cylinder 4. The lower end of the U-shaped frame 3 extends into the interior of the cylinder 1 and is fixedly installed with a spring cylinder 5. A limiting groove 6 adapted to the size of the U-shaped frame 3 is provided on the outer wall of the cylinder 1. A vertical limiting rod 7 is provided on the inner wall of the limiting groove 6. One end of the U-shaped frame 3 slides vertically along the limiting rod 7. A threshing mechanism 8 is provided at the top center of the cylinder 1. A connecting mechanism 9 is provided between the lower end of the threshing mechanism 8 and the drive mechanism 2. The connecting mechanism 9 drives the threshing mechanism 8 to rotate through the movement of the drive mechanism 2, so that the corn is threshed.

[0018] Specifically, the threshing mechanism 8 includes a pelletizing table 10, with several extension rods 11 fixedly connected to the outer wall of the pelletizing table 10. Several feed inlets 12 are provided on the upper surface of the cylinder 1 below the extension rods 11. The top of the pelletizing table 10 is provided with a toothed cut for separating corn kernels from the corn stalks. The extension rods 11 are used to limit the height of the pelletizing table 10 and, when the pelletizing table 10 rotates, sweep the cut corn kernels into the cylinder 1 through the feed inlets 12.

[0019] The connecting mechanism 9 includes a gear ring 13, which is fixedly connected to the bottom of the pelletizing table 10. One end of the gear ring 13 is engaged with a gear rod 14, and the other end of the gear rod 14 extends laterally to the outside of the cylinder 1 and is engaged with a toothed belt 15. The toothed belt 15 is arranged on the outer wall of the U-shaped frame 3. When the U-shaped frame 3 is held and driven to move vertically, the engagement between the toothed belt 15 and the gear rod 14 can drive the pelletizing table 10 to rotate through the gear ring 13, thereby pelletizing the corn.

[0020] It should be noted that the clamping cylinder 4 has an inner platform 16 inside. The inner wall size of the clamping cylinder 4 is larger than the outer wall size of the pelletizing table 10. When the clamping cylinder 4 clamps the corn and descends, even if it approaches the pelletizing table 10, the upper end of the pelletizing table 10 will only be located inside the clamping cylinder 4. The outer wall size of the inner platform 16 is lower than the inner wall size of the pelletizing table 10. The inner platform 16 leaves a gap between the top of the corn and the clamping cylinder 4, which makes it convenient to stop the movement of the U-shaped frame 3 in time. The outer side of the clamping cylinder 4 is made of transparent material for easy observation.

[0021] It should be added that the outer wall dimension of the movable end of the spring cylinder 5 is lower than the inner wall dimension of the pelletizing table 10 so that it can enter the inner side of the pelletizing table 10 and contact the bottom of the corn.

[0022] To facilitate the removal of corn kernels accumulated on the inner wall of the cylinder 1, a discharge door 17 is provided at the bottom of the inner wall of the cylinder 1. The discharge door 17 can be opened by plugging or sliding, which will not be described in detail here.

[0023] To prevent the gear rod 14 located outside the cylinder 1 from contacting the hand during rotation, an anti-pinch rod 18 is provided on the outer wall of the cylinder 1 at the lower end of the gear rod 14. When picking up the U-shaped frame 3, the maximum height of the palm is limited, making the use of the equipment safer.

[0024] In this embodiment, during corn threshing, the U-shaped frame 3 is first pushed upwards, and then the corn is inserted from the upper side of the cylinder 1 between the clamping cylinder 4 and the spring cylinder 5. At this time, the spring cylinder 5 has extended from the inside of the pelletizing table 10. The corn is clamped between the clamping cylinder 4 and the pelletizing table 10 by the spring cylinder 5. The user holds the U-shaped frame 3, and the U-shaped frame 3 is pushed downwards along the direction of the limiting groove 6. While the U-shaped frame 3 moves vertically, it drives the pelletizing table 10 to rotate through the meshing relationship of the toothed belt 15, the gear rod 14, and the gear ring 13. The top of the pelletizing table 10... The toothed cutter makes a circumferential cut on the corn kernels, causing them to gradually detach from the corn stalks. The detached kernels are swept by the extension rod 11 and enter the inside of the cylinder through the feed port 12. The limiting rod 7 can prevent the corn kernels inside the cylinder 1 from detaching from the cylinder 1. When the clamping cylinder 4 approaches the pelleting table, the user can visually judge the limit position and stop pressing down due to the presence of the inner platform 16. After the threshing is completed, the U-shaped frame 3 is lifted in the opposite direction, and the corn stalks can be removed as a whole. Finally, the corn kernels are poured out through the discharge door 17.

[0025] Finally, it should be noted that, in order to facilitate a clear demonstration and understanding of the structure of this invention, the accompanying drawings are not drawn strictly according to the actual scale. The drawings may contain enlarged, reduced, or distorted representations of specific components, spacing, or angles. Those skilled in the art should understand that, in actual production or manufacturing, the dimensions, tolerances, and proportional relationships described in this text shall prevail. In the description of this utility model, it should be noted that the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and 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. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set", "install", "connect", and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0027] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. A portable hand corn thresher comprising a cylinder (1), characterized in that: A vertical drive mechanism (2) is provided on one side of the outer wall of the cylinder (1). The drive mechanism (2) includes a U-shaped frame (3). The upper end of the U-shaped frame (3) extends to the top of the cylinder (1) and is fixedly installed with a clamping cylinder (4). The lower end of the U-shaped frame (3) extends into the interior of the cylinder (1) and is fixedly installed with a spring cylinder (5). A limiting groove (6) adapted to the size of the U-shaped frame (3) is provided on the outer wall of the cylinder (1). A vertical limiting rod (7) is provided on the inner wall of the limiting groove (6). One end of the U-shaped frame (3) slides vertically along the limiting rod (7). A threshing mechanism (8) is provided at the top center of the cylinder (1). A connecting mechanism (9) is provided between the lower end of the threshing mechanism (8) and the drive mechanism (2). The connecting mechanism (9) drives the threshing mechanism (8) to rotate through the movement of the drive mechanism (2) so that the corn is threshed.

2. The portable hand corn thresher according to claim 1, characterized in that: The threshing mechanism (8) includes a pelletizing table (10), and a number of extension rods (11) are fixedly connected to the outer wall of the pelletizing table (10). The upper surface of the cylinder (1) has a number of feed inlets (12) on the lower side of the extension rods (11).

3. The portable hand corn thresher according to claim 2, characterized in that: The connecting mechanism (9) includes a gear ring (13), which is fixedly connected to the bottom of the pelletizing table (10). One end of the gear ring (13) is engaged with a gear rod (14), and the other end of the gear rod (14) extends laterally to the outside of the cylinder (1) and is engaged with a toothed belt (15). The toothed belt (15) is arranged on the outer wall of the U-shaped frame (3).

4. The portable hand corn thresher according to claim 2, wherein: The clamp (4) has an inner platform (16) inside. The inner wall size of the clamp (4) is larger than the outer wall size of the pelletizing table (10), and the outer wall size of the inner platform (16) is smaller than the inner wall size of the pelletizing table (10).

5. The portable hand corn sheller of claim 2, wherein: The outer wall dimension of the movable end of the spring cylinder (5) is lower than the inner wall dimension of the pelletizing table (10).

6. The portable hand corn thresher according to claim 1, wherein: The bottom of the inner wall of the cylinder (1) is provided with a discharge gate (17).

7. The portable hand corn sheller of claim 3, wherein: The outer wall of the cylinder (1) is provided with an anti-pinch rod (18) at the lower end of the gear rod (14).

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