Grain crop harvester

Abstract

The utility model relates to the technical field of grain harvesting, and discloses a grain crop harvester which comprises a rack, the right side of the top end of the rack is fixedly connected with a driving assembly, the driving end of the driving assembly is fixedly connected with a transmission rod, and the front side of the transmission rod is fixedly connected with a conveying assembly. A plurality of chain wheels are rotationally connected into the machine frame, rotating rods are fixedly connected into the two chain wheels, the outer portions of every two chain wheels are sleeved with chains, a plurality of conveying rods are fixedly connected to the sides, close to each other, of the two chains, and a plurality of digging shovels are fixedly connected to the bottom end of the right side of the machine frame. The top end of the left side of the rack is fixedly connected with a plurality of inclined protection rods, and the rear side of the exterior of a transmission rod is fixedly connected with a transmission assembly. According to the potato harvester, the problem that due to the fact that a large amount of soil is attached, additional manual cleaning or complex vibration screening device treatment is needed is solved, and then the efficiency of the whole potato harvesting operation is improved.

Description

Technical Field

[0001] This utility model relates to the field of grain harvesting technology, and in particular to a grain crop harvester. Background Technology

[0002] In agricultural production, the harvesting of grain crops is a crucial step in the process. With the continuous advancement of agricultural scale and modernization, and the increasing demands for agricultural production efficiency, the application of grain crop harvesters has become increasingly important. They can greatly reduce the intensity of manual labor and significantly improve the speed and efficiency of harvesting operations. Early potato harvesting relied mainly on manual digging, a method that was not only labor-intensive and time-consuming but also extremely inefficient, making it difficult to meet the needs of large-scale planting. However, with technological advancements, grain crop harvesters have emerged.

[0003] Most harvesters typically use a walking mechanism and a collecting mechanism working together. The digging shovel comes into contact with the soil, and the power of the walking mechanism causes the digging shovel to penetrate into the soil, digging out the potatoes inside. Then, the potatoes are transported to multiple conveyor rods connected between two chains to transport them backward, thus completing the harvesting of potatoes.

[0004] In existing technologies, some harvesters, when conveying potatoes backward through multiple conveying pipes, cause the potatoes to be tightly covered with moist soil because they are directly dug out of the soil by the digging shovel. This requires additional manual cleaning, which increases labor costs. Alternatively, additional vibrating screens can be used to remove the soil, which requires purchasing additional screens, increasing equipment costs and reducing the efficiency of potato harvesting. Therefore, to address the above shortcomings, a grain crop harvester is proposed. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a grain crop harvester. It aims to improve the problem that existing technologies require additional manual cleaning or the addition of vibrating screens after potato harvesting due to soil adhesion, which increases labor and equipment costs and reduces the efficiency of potato harvesting operations.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A grain harvester includes a frame. A drive assembly is fixedly connected to the top right side of the frame. A transmission rod is fixedly connected to the drive end of the drive assembly. A transmission assembly is fixedly connected to the front side of the transmission rod. Multiple sprockets are rotatably connected inside the frame. Rotating rods are fixedly connected inside two of the sprockets. A chain is sleeved on the outside of each pair of sprockets. Multiple conveying rods are fixedly connected to the adjacent sides of the two chains. Multiple digging shovels are fixedly connected to the bottom right side of the frame. Multiple inclined guard rods are fixedly connected to the top left side of the frame. A transmission assembly is fixedly connected to the rear side of the transmission rod. A support rod is rotatably connected to the top right side of the frame. Eccentric wheels are fixedly connected to the front and rear ends of the support rod. Connecting blocks are rotatably connected to the distant sides of the two eccentric wheels. A screening assembly is rotatably connected to the left side of the connecting block.

[0008] Furthermore, a movable component for bearing is fixedly connected to the bottom end of the frame, and two mounting blocks are fixedly connected to the right end of the frame. Two bolts are internally threaded to the mounting blocks, and multiple washers are slidably connected to the outside of the bolts. A strong spring is fixedly connected to the adjacent side of every two washers, and two nuts are externally threaded to the bolts.

[0009] Furthermore, the transmission assembly includes a first rotating wheel, the rear end of which is fixedly connected to the front side of the transmission rod. A second rotating wheel is rotatably connected to the left front end of the frame. A pulley is fitted around the first and second rotating wheels. The rear end of the second rotating wheel is fixedly connected to the front side of the left rotating rod.

[0010] Furthermore, the transmission assembly includes a drive wheel, the drive wheel is internally fixedly connected to the rear end of the transmission rod, the outer rear end of the support rod is fixedly connected to a driven wheel, and a pulley is sleeved on the outside of the drive wheel and the driven wheel.

[0011] Furthermore, the screening assembly includes an L-shaped connecting rod, the outer top end of which is rotatably connected to the inside left side of the connecting block. Limiting rods are fixedly connected to both the front and rear sides of the frame. Two auxiliary rods are rotatably connected to the bottom left side of the frame. A sieve plate is fixedly connected to the adjacent side of the two L-shaped connecting rods. The middle end of the L-shaped connecting rod is rotatably connected to the outside of the limiting rod. The bottom ends of the two auxiliary rods are respectively rotatably connected to the left ends of the front and rear sides of the sieve plate.

[0012] Furthermore, the opposite sides of the plurality of sprockets are respectively rotatably connected to the front and rear sides inside the frame, and the outside of the rotating rod is rotatably connected to the inside of the frame.

[0013] Furthermore, the moving component includes two support frames, the top ends of the two support frames are fixedly connected to the bottom end of the frame, and each of the two support frames is rotatably connected to a moving wheel on its opposite side.

[0014] Furthermore, the drive assembly includes a motor, the bottom end of which is fixedly connected to the top right side of the frame, and a reducer is fixedly connected to the drive end of the motor. The bottom end of the reducer is fixedly connected to the top of the frame near the motor, and the drive end of the reducer is fixedly connected to the outside of the transmission rod.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, by starting the motor, the reducer drives multiple chains to transport potatoes via the conveyor rod, causing the potatoes to fall onto the screen plate. At the same time, the screen plate shakes, which improves the efficiency and quality of separating potatoes from soil, reduces the amount of soil residue on the potatoes, and avoids the problem of needing extra manual cleaning or complex vibrating screen devices due to a large amount of soil adhering to the potatoes, thereby improving the efficiency of the entire potato harvesting operation.

[0017] 2. In this utility model, when the walking device is connected to the harvester, the two are connected by bolts, and then two washers and a strong spring between the two washers are installed. At this time, the nut is turned to complete the installation. This can improve the harvester's buffering and vibration reduction capabilities during walking, ensure the stability of the connection, and reduce the frequency of maintenance and replacement of parts. Attached Figure Description

[0018] Figure 1 This is a perspective view of a grain harvester proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the frame structure of a grain crop harvester proposed in this utility model;

[0020] Figure 3 for Figure 2 Enlarged view of point A in the image;

[0021] Figure 4 for Figure 2 Enlarged view of point B in the image;

[0022] Figure 5 for Figure 2 Enlarged view of point C in the image.

[0023] Legend:

[0024] 1. Frame; 2. Motor; 3. Reducer; 4. Transmission rod; 5. Rotating wheel one; 6. Rotating wheel two; 7. Belt pulley one; 8. Rotating rod; 9. Sprocket; 10. Chain; 11. Conveying rod; 12. Excavating shovel; 13. Slanted guard rod; 14. Drive wheel; 15. Support rod; 16. Driven wheel; 17. Belt pulley two; 18. Eccentric wheel; 19. Connecting block; 20. L-shaped connecting rod; 21. Limiting rod; 22. Auxiliary rod; 23. Screen plate; 24. Support frame; 25. Moving wheel; 26. Mounting block; 27. Bolt; 28. Washer; 29. ​​Strong spring; 30. Nut. Detailed Implementation

[0025] 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.

[0026] Reference Figures 1 to 3 This utility model provides an embodiment of a grain crop harvester, including a frame 1. This frame 1 serves as the core support structure of the entire harvester, stably supporting all its components. A drive assembly is fixedly connected to the top right side of the frame 1. This drive assembly is a crucial component providing the power source for the entire harvesting operation. A transmission rod 4 is fixedly connected to the drive end of the drive assembly, effectively transmitting the power generated by the drive assembly to other related components.

[0027] The drive assembly includes a motor 2, which serves as the power generator. The bottom end of the motor 2 is fixedly connected to the top right side of the frame 1 to ensure that the motor will not loosen or shift during operation. A reducer 3 is fixedly connected to the drive end of the motor 2. The reducer 3 can precisely adjust and control the speed of the motor 2 so that its output speed and torque meet the requirements of different working stages. The bottom end of the reducer 3 is fixedly connected to the top of the frame 1 near the motor 2, and the drive end of the reducer 3 is fixedly connected to the outside of the transmission rod 4. The two are tightly connected by a special coupling, which enables the power to be transmitted efficiently and smoothly.

[0028] A transmission assembly is fixedly connected to the front of the transmission rod 4, which plays a crucial role in transporting and transferring the dug potatoes. The transmission assembly includes a rotating wheel 5, the rear end of which is fixedly connected to the front of the transmission rod 4. A rotating wheel 6 is rotatably connected to the left front end of the frame 1, allowing it to rotate freely and smoothly on the frame 1. It works in conjunction with the rotating wheel 5 to transmit and convert power. A pulley 7 is fitted around the rotating wheels 5 and 6, effectively transmitting power from the rotating wheel 5 to the rotating wheel 6. The rear end of the rotating wheel 6 is fixedly connected to the front of the left rotating rod 8, ensuring smooth power transmission to the rotating rod 8. Multiple sprockets 9 are rotatably connected inside the frame 1, with their opposite sides rotatably connected to the front and rear sides of the frame 1, forming a stable rotational support structure inside the frame 1.

[0029] The rotating rod 8 is externally rotatably connected to the inside of the frame 1. The rotating rod 8 is fixedly connected to the inside of two sprockets 9. A chain 10 is fitted around each pair of sprockets 9, allowing for stable operation. Multiple conveying rods 11 are fixedly connected to adjacent sides of the two chains 10, evenly distributed along the chains 10 to effectively convey potatoes. Multiple digging shovels 12 are fixedly connected to the bottom right side of the frame 1, efficiently excavating potatoes from the soil. Multiple inclined protective rods 13 are fixedly connected to the top left side of the frame 1. These inclined protective rods 13 can, to some extent, prevent potatoes from accidentally falling out of the frame 1 during conveying, providing good protection.

[0030] Reference Figure 1 , Figure 2 and Figure 4 A transmission assembly is fixedly connected to the rear side of the transmission rod 4. The transmission assembly includes a drive wheel 14, which is internally fixedly connected to the rear end of the transmission rod 4. A driven wheel 16 is fixedly connected to the rear end of the support rod 15. The driven wheel 16 and the drive wheel 14 cooperate to realize the transmission and conversion of power. A second pulley 17 is sleeved on the outside of the drive wheel 14 and the driven wheel 16. The structure and material of the second pulley 17 are similar to those of the first pulley 7, which can stably transmit power. A support rod 15 is rotatably connected to the top right side of the frame 1. An eccentric wheel 18 is fixedly connected to the front and rear ends of the support rod 15. The eccentric wheel 18 is ingeniously designed to convert rotational motion into reciprocating motion. A connecting block 19 is rotatably connected to the far side of the two eccentric wheels 18. A screening assembly is rotatably connected to the left side of the connecting block 19. The screening assembly is the key part for separating potatoes from soil.

[0031] The screening assembly includes an L-shaped connecting rod 20, the outer top of which is rotatably connected to the inner left side of the connecting block 19, allowing it to rotate flexibly according to the movement of the connecting block 19. Limiting rods 21 are fixedly connected to both the front and rear sides of the frame 1, restricting the rotation range of the L-shaped connecting rod 20 to ensure its stability and reliability. Two auxiliary rods 22 are rotatably connected to the bottom left side of the frame 1, providing auxiliary support for the swaying of the sieve plate 23. The sieve plate 23 is fixedly connected to the adjacent side of the two L-shaped connecting rods 20, effectively separating potatoes from soil. The inner middle of the L-shaped connecting rod 20 is rotatably connected to the outside of the limiting rod 21, and the bottom ends of the two auxiliary rods 22 are rotatably connected to the left ends of the front and rear sides of the sieve plate 23, respectively.

[0032] Reference Figure 2 and Figure 5 The bottom of the frame 1 is fixedly connected to a moving assembly for bearing loads. The moving assembly includes two support frames 24. The tops of the two support frames 24 are fixedly connected to the bottom of the frame 1. The far sides of the two support frames 24 are rotatably connected to moving wheels 25. The right end of the frame 1 is fixedly connected to two mounting blocks 26. The internal threads of the mounting blocks 26 are connected to two bolts 27. The external threads of the bolts 27 are slidably connected to multiple washers 28. The washers 28 play a role in buffering and dispersing pressure. A strong spring 29 is fixedly connected to the near side of every two washers 28. The strong spring 29 can provide effective buffering and shock absorption during the movement of the harvester. The external threads of the bolts 27 are connected to two nuts 30. By tightening the nuts 30, the walking device can be tightly connected to the harvester to ensure the stability and reliability of the connection.

[0033] Working principle: First, start motor 2 to drive reducer 3 to rotate. Reducer 3 then drives transmission rod 4 to rotate. When transmission rod 4 rotates, it drives rotating wheel 5 fixedly connected to its front side to rotate. Rotating wheel 5 drives rotating wheel 6 at the front left end of frame 1, which is connected to it, to rotate via pulley 7. Rotating rod 8 fixedly connected to the rear end of rotating wheel 6 rotates accordingly. Rotating rod 8 drives sprocket 9 fixedly connected to its outside to rotate. Multiple sprockets 9 rotate inside frame 1 and drive conveyor rod 11 to move via chain 10. At the same time, digging shovel 12 at the bottom right side of frame 1 digs potatoes. The dug potatoes are conveyed by conveyor rod 11 and fall onto screen plate 23.

[0034] The rotation of the transmission rod 4 also drives the drive wheel 14, which is fixedly connected to its rear end, to rotate. The drive wheel 14 drives the driven wheel 16, which is fixedly connected to the rear end of the support rod 15, to rotate through the pulley 17. The rotation of the support rod 15 causes the eccentric wheels 18, which are fixedly connected to its front and rear ends, to rotate. The rotation of the eccentric wheels 18 causes the connecting block 19, which is rotatably connected to the opposite side, to move. The movement of the connecting block 19 causes the middle end of the L-shaped connecting rod 20, which is rotatably connected to the left side, to rotate outside the limit rod 21. One side of the sieve plate 23, which is fixedly connected to the side close to the L-shaped connecting rod 20, is lifted. The other side of the sieve plate 23, in cooperation with the auxiliary rod 22, which is rotatably connected to the bottom left side of the frame 1, causes the sieve plate 23 to sway, thereby improving the efficiency and quality of separating potatoes from soil.

[0035] When the walking device is connected to the harvester, align the mounting block 26 on the right end of the frame 1 with the walking device, pass the bolt 27 through the mounting block 26, slide the shim 28 on the outside of the bolt 27, fix the strong spring 29 between each pair of shims 28, and finally thread the nut 30 on the outside of the bolt 27 and tighten it, thereby improving the harvester's buffering and shock absorption capacity during the walking process and ensuring connection stability.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A grain crop harvester, comprising a frame (1), characterized in that: A drive assembly is fixedly connected to the top right side of the frame (1). A transmission rod (4) is fixedly connected to the drive end of the drive assembly. A transmission assembly is fixedly connected to the front side of the transmission rod (4). Multiple sprockets (9) are rotatably connected inside the frame (1). Rotating rods (8) are fixedly connected inside two sprockets (9). A chain (10) is sleeved on the outside of each pair of sprockets (9). Multiple conveying rods (11) are fixedly connected to the adjacent side of the two chains (10). The right side of the frame (1) Multiple digging shovels (12) are fixedly connected to the bottom end. Multiple inclined guard rods (13) are fixedly connected to the top left side of the frame (1). A transmission component is fixedly connected to the rear outer side of the transmission rod (4). A support rod (15) is rotatably connected to the inside right side of the top end of the frame (1). Eccentric wheels (18) are fixedly connected to the front and rear ends of the support rod (15). A connecting block (19) is rotatably connected to the far side of the two eccentric wheels (18). A screening component is rotatably connected to the inside left side of the connecting block (19).

2. A grain crop harvester according to claim 1, characterized in that: The bottom end of the frame (1) is fixedly connected to a movable component for bearing load. The right end of the frame (1) is fixedly connected to two mounting blocks (26). The mounting blocks (26) are internally threaded with two bolts (27). The bolts (27) are externally slidably connected with multiple washers (28). A strong spring (29) is fixedly connected to the adjacent side of each pair of washers (28). The bolts (27) are externally threaded with two nuts (30).

3. A grain crop harvester according to claim 1, characterized in that: The transmission assembly includes a rotating wheel (5), the rear end of which is fixedly connected to the front side of the transmission rod (4), a rotating wheel (6) is rotatably connected to the left front end of the frame (1), a belt pulley (7) is sleeved on the outside of the rotating wheel (5) and the rotating wheel (6), and the rear end of the rotating wheel (6) is fixedly connected to the front side of the rotating rod (8) on the left side.

4. A grain crop harvester according to claim 1, characterized in that: The transmission assembly includes a drive wheel (14), which is internally fixedly connected to the rear end of the transmission rod (4). A driven wheel (16) is fixedly connected to the external rear end of the support rod (15). A second pulley (17) is sleeved on the outside of the drive wheel (14) and the driven wheel (16).

5. A grain crop harvester according to claim 1, characterized in that: The screening assembly includes an L-shaped connecting rod (20), the outer top of which is rotatably connected to the inner left side of the connecting block (19). Limiting rods (21) are fixedly connected to both the front and rear sides of the frame (1). Two auxiliary rods (22) are rotatably connected to the bottom left side of the frame (1). A sieve plate (23) is fixedly connected to the adjacent side of the two L-shaped connecting rods (20). The middle end of the L-shaped connecting rod (20) is rotatably connected to the outside of the limiting rod (21). The bottom ends of the two auxiliary rods (22) are rotatably connected to the left ends of the front and rear sides of the sieve plate (23).

6. A grain crop harvester according to claim 1, characterized in that: The opposite sides of the plurality of sprockets (9) are rotatably connected to the front and rear sides of the interior of the frame (1), and the outside of the rotating rod (8) is rotatably connected to the interior of the frame (1).

7. A grain crop harvester according to claim 2, characterized in that: The moving component includes two support frames (24), the top ends of the two support frames (24) are fixedly connected to the bottom end of the frame (1), and each of the two support frames (24) is rotatably connected to a moving wheel (25) on the opposite side.

8. A grain crop harvester according to claim 1, characterized in that: The drive assembly includes a motor (2), the bottom end of which is fixedly connected to the top right side of the frame (1), and a speed reducer (3) is fixedly connected to the drive end of the motor (2). The bottom end of the speed reducer (3) is fixedly connected to the top side of the frame (1) near the motor (2), and the drive end of the speed reducer (3) is fixedly connected to the outside of the transmission rod (4).

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