Grain and straw separating device of agricultural harvester

Abstract

The utility model discloses a grain and straw separating device of an agricultural harvester, which relates to the field of grain cutting and comprises a frame, a conveying bin is arranged on the inner side of the frame, a conveying auger is arranged on the inner side of the conveying bin, a discharge port matched with the frame is formed in the middle of the conveying bin, and a conveying bridge is arranged on the outer side of the discharge port. A cutting device is arranged on one side of the bottom end of the conveying bin; a through groove is formed in the top of the frame, and a pushing assembly matched with the conveying bin is arranged in the through groove. Mounting bases are arranged at the two ends of the middle of the top end of the frame, a cutting tool is arranged between the two mounting bases, and a protective cover is arranged on the outer side of the frame. Under the action of the material pushing assembly, the phenomenon that grains are blocked on the two sides of the conveying bin after grain straw separation is effectively reduced, it is guaranteed that the grains are rapidly pushed to the discharging port, the situation that the grains are lost in the conveying process is reduced, and the collecting efficiency of the grains in the grain straw separation process is improved.

Description

Technical Field

[0001] The utility model relates to the field of grain cutting, in particular to a grain straw separating device for an agricultural harvester. Background Art

[0002] An agricultural harvester is a type of machinery designed specifically for harvesting crops on a large scale. It can perform various operations in the fields, such as cutting, threshing, separating, and cleaning, helping farmers complete the harvesting process efficiently.

[0003] When the agricultural harvester moves forward, the cutting device will cut off the stems of the crops from the roots, and the cut crops will be transferred to the cutting tool. The cut crops will enter the conveying auger through the input operation of the comb-tooth structure in the cutting tool. As the crops are fed into the auger, the grains and straw begin to separate here. The grains are transported to the discharge port and discharged through further processing inside the machine, while the straw is discharged from the outlet at the rear end.

[0004] There is no sufficient slope or guide device designed on both sides of the conveying bin, which causes the grain to easily accumulate on both sides when the auger rotates, rather than smoothly entering the spiral flow area of ​​the auger. This may cause grain accumulation and loss, reduce harvesting efficiency, and affect the final harvest yield.

[0005] Currently, no effective solutions have been proposed for the problems in related technologies. Utility Model Content

[0006] In response to the problems in the related art, the utility model proposes a grain straw separation device for an agricultural harvester to overcome the above-mentioned technical problems existing in the existing related art.

[0007] To this end, the specific technical solutions adopted in this utility model are as follows:

[0008] A grain straw separation device for an agricultural harvester comprises a frame, a conveying bin is provided on the inner side of the frame, a conveying auger is provided on the inner side of the conveying bin, a discharge port cooperating with the frame is provided in the middle of the conveying bin, and a conveying bridge is provided on the outer side of the discharge port; a cutting device is provided on one side of the bottom end of the conveying bin; a through slot is provided on the top of the frame, and a pushing assembly cooperating with the conveying bin is provided inside the through slot; mounting seats are provided at both ends of the middle part of the top end of the frame, a cutting tool is provided between the two sets of mounting seats, and a protective cover is provided on the outer side of the frame.

[0009] Furthermore, in order to ensure the stable movement of the pushing assembly, a limiting groove that cooperates with the pushing assembly is provided at the bottom end of the through groove.

[0010] Furthermore, in order to effectively reduce the jamming of grains on both sides of the conveying bin after separation of grain straw under the action of the pushing assembly, the addition of the pushing assembly can ensure that the grains are quickly pushed to the discharge port, reduce the loss of grains during transportation, and improve the collection efficiency of grains during the separation of grain straw. The pushing assembly includes a motor arranged on one side of the frame, a rotating shaft is provided at one end of the output shaft of the motor, external threads are provided at both ends of the rotating shaft, a sliding block is provided on the outside of the external thread, and a pushing piece that cooperates with the conveying bin is provided on one side of the sliding block; a limiting convex strip that cooperates with the limiting groove is provided at the bottom end of the sliding block, and the thread direction of the external threads at both ends of the rotating shaft is set in reverse, and the pushing piece includes a connecting rod arranged on one side of the sliding block, and a pushing plate that cooperates with the conveying bin is provided at the bottom end of the connecting rod, and a pushing inclined plate is provided at the end of the pushing plate.

[0011] The beneficial effects of the utility model are:

[0012] 1. The utility model, with the cooperation of the conveying auger, the cutting device and the cutting tool, cuts the roots or stems of the grain straw to complete the separation of the crops, reduces the jamming phenomenon during the conveying process, and pushes the cut grains and straw to the discharge port through rotation. In the process of conveying the materials to the discharge port, the grains and straw will be separated for the second time by using the conveying bridge. The grains are smoothly collected to the designated location, and the excess straw is excluded, so as to achieve efficient separation of grains and straw.

[0013] 2. Under the action of the pushing component, the jamming phenomenon of grains on both sides of the conveying bin after grain straw separation is effectively reduced, ensuring that the grains are quickly pushed to the discharge port, reducing the loss of grains during transportation, and improving the collection efficiency of grains during the grain straw separation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 This is a structural schematic diagram of a grain straw separation device for an agricultural harvester according to an embodiment of the present utility model;

[0016] Figure 2 This is a three-dimensional assembly diagram of a grain straw separation device for an agricultural harvester according to an embodiment of the utility model;

[0017] Figure 3This is a partial cross-sectional view of a grain straw separation device for an agricultural harvester according to an embodiment of the present utility model;

[0018] Figure 4 yes Figure 3 A partial enlarged view of point A in the middle.

[0019] In the picture:

[0020] 1. Frame; 2. Conveying bin; 3. Conveying auger; 4. Discharge port; 5. Conveying bridge; 6. Cutting device; 7. Through slot; 8. Pushing assembly; 801. Motor; 802. Rotating shaft; 803. External thread; 804. Sliding block; 805. Pushing piece; 8051. Connecting rod; 8052. Pushing plate; 8053. Pushing inclined plate; 806. Limiting ridge; 9. Mounting seat; 10. Cutting tool; 11. Protective cover; 12. Limiting slot. DETAILED DESCRIPTION

[0021] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. By referring to these contents, ordinary technicians in this field should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0022] According to an embodiment of the present utility model, a grain straw separation device for an agricultural harvester is provided.

[0023] The present invention will now be further described with reference to the accompanying drawings and specific embodiments. Figures 1-4 As shown, the grain straw separation device of the agricultural harvester according to the embodiment of the utility model includes a frame 1, a conveying bin 2 is provided on the inner side of the frame 1, a conveying auger 3 is provided on the inner side of the conveying bin 2, a discharge port 4 which cooperates with the frame 1 is provided in the middle of the conveying bin 2, and a conveying bridge 5 is provided on the outer side of the discharge port 4; a cutting device 6 is provided on one side of the bottom end of the conveying bin 2; a through groove 7 is provided on the top of the frame 1, and a pushing assembly 8 which cooperates with the conveying bin 2 is provided inside the through groove 7; mounting seats 9 are provided at both ends of the middle part of the top of the frame 1, and a cutting tool 10 is provided between the two groups of mounting seats 9, a protective cover 11 is provided on the outer side of the frame 1, and a limiting groove 12 which cooperates with the pushing assembly 8 is provided at the bottom end of the through groove 7.

[0024] With the help of the above technical scheme, the utility model cuts the roots or stems of grain straw under the cooperation of the conveying auger 3, the cutting device 6 and the cutting tool 10, completes the separation of crops, reduces the jamming phenomenon during the conveying process, and pushes the cut grains and straw to the discharge port 4 through rotation. In the process of conveying the material to the discharge port 4, the grains and straw will be separated for the second time using the conveying bridge 5, and the grains are smoothly collected to the designated position, while the excess straw is excluded to achieve efficient separation of grains and straw; under the action of the pushing component 8, the addition of the pushing component 8 can effectively reduce the jamming phenomenon of the grains on both sides of the conveying bin after the separation of the grains and straws, ensure that the grains are quickly pushed to the discharge port, reduce the loss of grains during the conveying process, and improve the collection efficiency of grains from grains and straws during the separation process.

[0025] It should be noted that the structure of the conveying auger 3 includes:

[0026] 1. Spiral blades: The core part of the conveying auger, composed of spiral blades, which rotate around a central axis and are usually made of high-strength metal materials.

[0027] 2. Center shaft: The main shaft of the auger. The blades are fixed on the shaft, and the rotation of the shaft drives the blades to rotate.

[0028] 3. Conveying pipeline or conveying bin: The auger is usually installed inside the conveying bin to ensure that the material moves along the direction of the spiral blade to avoid scattering.

[0029] Here's how it works:

[0030] The conveying auger uses the rotating motion of its spiral blades to move grain or straw from the cutting location to the discharge outlet. The spiral design ensures uniform material delivery, preventing blockage or stagnation. During the grain separation process, the auger's rotational speed, blade angle, and length all affect its conveying efficiency. The auger can operate not only horizontally but also at an angle, ensuring smooth material delivery to the discharge outlet.

[0031] The composition structure of the cutting device 6 is as follows:

[0032] 1. Cutting blade: The core cutting part, composed of multiple sharp blades, is usually installed on a robotic arm or support device and can perform rapid reciprocating motion.

[0033] 2. Drive device: Provides power to the cutting device, usually an electric motor or hydraulic system, driving the blade for rapid cutting action.

[0034] 3. Support frame: The fixed part of the blade, ensuring the stability of the blade's movement trajectory.

[0035] Here’s how it works:

[0036] The cutting device, typically mounted at the front of the harvester, cuts the roots or stems of grain stalks. As the machine moves forward, the cutting device automatically adjusts the cutting height based on the crop height and stalk thickness, ensuring precise stalk cutting. Through reciprocating or rotating motion, the blades cut quickly and continuously, severing the crop from the root and transferring it to the delivery bin 2.

[0037] The composition structure of the cutting tool 10 is as follows:

[0038] 1. Blade: Similar to the blade of a lawn mower, the sharp edge can easily cut the stems.

[0039] 2. Blade bracket: The blade is fixed on the bracket to ensure the stability of the blade's movement direction and position.

[0040] 3. Drive mechanism: Usually an electric or hydraulic system that provides rotational or reciprocating power, enabling the tool to cut at high speed.

[0041] Here’s how it works:

[0042] The cutting blade performs the initial cutting of grain, typically severing the crop stems to facilitate subsequent separation and processing. The blades rotate or reciprocate at high speed, severing the crop stems, which are then transported to the threshing unit via an auger or other device. Their efficiency directly impacts harvesting speed and grain separation efficiency.

[0043] In one embodiment, for the above-mentioned pushing assembly 8, the pushing assembly 8 includes a motor 801 arranged on one side of the frame 1, a rotating shaft 802 is provided at one end of the output shaft of the motor 801, and both ends of the rotating shaft 802 are provided with external threads 803, a sliding block 804 is provided on the outside of the external thread 803, and a pushing piece 805 that cooperates with the conveying bin 2 is provided on one side of the sliding block 804; a limiting ridge 806 that cooperates with the limiting groove 12 is provided at the bottom end of the sliding block 804, and the thread direction of the external thread 803 at both ends of the rotating shaft 802 is reverse The pushing member 805 is set to include a connecting rod 8051 arranged on one side of the sliding block 804, and the bottom end of the connecting rod 8051 is provided with a pushing plate 8052 that cooperates with the conveying bin 2, and the end of the pushing plate 8052 is provided with a pushing inclined plate 8053. Therefore, under the action of the pushing component 8, the addition of the pushing component 8 can effectively reduce the jamming phenomenon of the grain on both sides of the conveying bin after the grain straw is separated, ensure that the grain is quickly pushed to the discharge port, reduce the loss of grain during the transportation process, and improve the collection efficiency of the grain straw during the separation process.

[0044] The working principle of the pushing assembly 8 is as follows: under the control of the external control panel, the motor 801 is controlled and started, and the rotating shaft 802 is driven to rotate under the action of the output shaft of the motor 801. During the rotation of the rotating shaft 802, the external threads 803 on both sides are driven to rotate. The thread directions of the external threads 803 at both ends of the rotating shaft 802 are set in opposite directions, which will drive the sliding block 804 to move inward along the conveying bin 2, and use the pushing inclined plate 8053 at the bottom end of the pushing member 805 to push the accumulated grains, and push the accumulated grains from both sides of the conveying bin 2 to the discharge port 4, and use the conveying bridge to complete the collection of the grains.

[0045] In order to facilitate understanding of the above technical solutions of the present invention, the working principle or operation method of the present invention in actual process is described in detail below.

[0046] In actual application, the overall structure is supported by the frame 1, and the conveying bin 2 arranged on the inner side of the frame is equipped with a conveying auger 3 for conveying grains and straw. The grain straw is cut at the root or stem under the joint action of the cutting device 6 and the cutting tool 10, thereby realizing the preliminary separation of grains and straw. The spiral blades of the conveying auger 3 push the separated grains and straw evenly to the discharge port 4 through rotation, preventing the grains and straw from piling up and getting stuck during the conveying process. In the process of conveying the material to the discharge port 4, the grains and straw will be separated for the second time using the conveying bridge 5, and the grains are smoothly collected to the designated location, while the excess straw is excluded, so as to realize the efficient separation of grains and straw.

[0047] The working principles of the conveying auger 3, the cutting device 6, the cutting tool 10 and the pushing assembly 8 are as described above.

[0048] To sum up, with the help of the above-mentioned technical scheme of the present invention, the present invention cuts the roots or stems of grain straw under the cooperation of the conveying auger 3, the cutting device 6 and the cutting tool 10, completes the separation of crops, reduces the jamming phenomenon during the conveying process, and pushes the cut grains and straw to the discharge port 4 through rotation. In the process of conveying the material to the discharge port 4, the grains and straw will be separated for the second time using the conveying bridge 5, and the grains are smoothly collected to the designated position, while the excess straw is excluded to achieve efficient separation of grain straw; under the action of the pushing component 8, the addition of the pushing component 8 can effectively reduce the jamming phenomenon of the grains on both sides of the conveying bin after the separation of the grain straw, ensure that the grains are quickly pushed to the discharge port, reduce the loss of grains during the conveying process, and improve the collection efficiency of grains from grain straw during the separation process.

[0049] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A grain straw separation device for an agricultural harvester, comprising a frame (1), characterized in that: A conveying bin (2) is provided on the inner side of the frame (1), a conveying auger (3) is provided on the inner side of the conveying bin (2), a discharge port (4) matching the frame (1) is provided in the middle of the conveying bin (2), and a conveying bridge (5) is provided on the outer side of the discharge port (4); A cutting device (6) is provided on one side of the bottom end of the conveying bin (2); A through slot (7) is provided on the top of the frame (1), and a material pushing assembly (8) that cooperates with the conveying bin (2) is provided inside the through slot (7); Mounting seats (9) are provided at both ends of the middle portion of the top end of the frame (1), and a cutting tool (10) is provided between two groups of the mounting seats (9).

2. The grain straw separation device for an agricultural harvester according to claim 1, characterized in that: A protective cover (11) is provided on the outer side of the frame (1).

3. The grain straw separation device for an agricultural harvester according to claim 2, characterized in that: The bottom end of the through groove (7) is provided with a limiting groove (12) that matches the pushing assembly (8).

4. The grain straw separation device for an agricultural harvester according to claim 3, characterized in that: The pusher assembly (8) includes a motor (801) arranged on one side of the frame (1), a rotating shaft (802) is provided at one end of the output shaft of the motor (801), both ends of the rotating shaft (802) are provided with external threads (803), a sliding block (804) is provided on the outside of the external threads (803), and a pusher (805) that cooperates with the conveying bin (2) is provided on one side of the sliding block (804); The bottom end of the sliding block (804) is provided with a limiting convex strip (806) that matches the limiting groove (12).

5. The grain straw separation device for an agricultural harvester according to claim 4, characterized in that: The thread directions of the external threads (803) located at both ends of the rotating shaft (802) are set in opposite directions.

6. The grain straw separation device for an agricultural harvester according to claim 5, characterized in that: The pusher (805) comprises a connecting rod (8051) arranged on one side of the sliding block (804); a push plate (8052) cooperating with the conveying bin (2) is provided at the bottom end of the connecting rod (8051); and a pusher inclined plate (8053) is provided at the end of the push plate (8052).

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