Agricultural machine and threshing system thereof

Abstract

The utility model belongs to the technical field of agricultural mechanical equipment, and particularly relates to an agricultural machine and a threshing system thereof, and the threshing system comprises a tangential flow threshing device, a longitudinal axial flow threshing device and a feeding device. Crops enter the threshing system from the harvesting device to form a crop flow, the crop flow is sequentially connected with the tangential flow threshing device, the feeding device and the longitudinal axial flow threshing device, specifically, the tangential flow threshing device is in butt joint with the harvesting device so that the crop flow can smoothly enter the threshing system in a transition mode, and first threshing treatment can be conducted on the crops; the feeding device guides the crop flow from the tangential flow threshing device to the longitudinal axial flow threshing device, and the longitudinal axial flow threshing device conducts secondary threshing treatment on the crops. According to the threshing system, the tangential flow threshing device and the longitudinal axial flow threshing device are used for carrying out threshing treatment on crop flow twice, so that the time for carrying out mechanical striking and friction on crops is prolonged, and the threshing effect of the threshing system on the crops is improved.

Description

Technical Field

[0001] This application belongs to the technical field of agricultural machinery and equipment, specifically relating to an agricultural machine and its threshing system. Background Technology

[0002] In the process of agricultural modernization, with the continuous expansion of agricultural production scale, higher requirements are placed on the working speed and crop processing capacity of agricultural machinery. Among them, the development of threshing technology of agricultural machinery has greatly improved the crop processing capacity of agricultural machinery. The threshing operation of agricultural machinery is performed by the threshing system. Threshing refers to the separation of the grains of crops from the ears on the straw. Specifically, it uses high-speed rotating threshing elements to mechanically strike and rub the crops.

[0003] In the existing technology, crossflow threshing technology is used to thresh crops. The threshing system of crossflow threshing technology has a large lateral width and a small longitudinal length. In other words, it can feed a large number of crops at the same time, but the contact time between the threshing system and the crops is short, so the threshing effect is not good. Utility Model Content

[0004] The purpose of this application is to provide an agricultural machine and its threshing system, which aims to improve the threshing effect of the threshing system.

[0005] To achieve the above objectives, this application provides a threshing system for agricultural machinery, the threshing system comprising:

[0006] A tangential threshing device is located downstream of the harvesting device of agricultural machinery. The tangential threshing device includes a tangential threshing pivot and a tangential threshing pivot shaft. The tangential threshing pivot rotates around the tangential threshing pivot shaft.

[0007] A longitudinal axial flow threshing device is located downstream of the tangential flow threshing device. The longitudinal axial flow threshing device includes a longitudinal axial flow threshing pivot and a longitudinal axial flow threshing pivot shaft. The longitudinal axial flow threshing pivot rotates around the longitudinal axial flow threshing pivot shaft.

[0008] A feeding device is located downstream of the tangential flow threshing device and upstream of the longitudinal axial flow threshing device. The feeding device is used to transport the workpiece from the tangential flow threshing device to the longitudinal axial flow threshing device.

[0009] In some embodiments, the axis of the tangential flow threshing pivot is perpendicular to the axis of the longitudinal flow threshing pivot.

[0010] In some embodiments, the feeding device includes a feeding pivot and a feeding pivot shaft, the feeding pivot rotating about the feeding pivot shaft, the axis of the feeding pivot shaft being parallel to the axis of the tangential flow threshing pivot shaft and perpendicular to the axis of the longitudinal axial flow threshing pivot shaft.

[0011] In some embodiments, the projection of the axis of the longitudinal axial flow threshing pivot in the plane containing the axis of the tangential flow threshing pivot passes through the midpoint of the tangential flow threshing pivot.

[0012] The projection of the axis of the longitudinal axial flow threshing pivot shaft onto the plane containing the axis of the feed pivot shaft passes through the midpoint of the axis of the feed pivot shaft.

[0013] In some embodiments, the feeding device includes:

[0014] A feeding mounting plate, wherein the number of the feeding mounting plates is multiple and the multiple feeding mounting plates are arranged circumferentially on the feeding pivot member along the feeding pivot axis, and the feeding mounting plates extend axially along the feeding pivot axis;

[0015] The feeding blade has a spiral structure and is connected to the axial end of the feeding mounting plate, extending to the axial end of the feeding pivot located on the same side as the axial end of the feeding mounting plate.

[0016] The number of feeding baffles is multiple and the multiple feeding baffles are arranged at axial intervals between two adjacent feeding mounting plates along the feeding pivot axis.

[0017] In some embodiments, the feeding device further includes a feeding toothed plate that extends axially along the feeding pivot shaft and is mounted on the feeding mounting plate, the feeding toothed plate having a toothed structure formed on its edge radially away from the feeding pivot shaft.

[0018] In some embodiments, the tangential threshing device further includes:

[0019] A tangential threshing concave plate, wherein the tangential threshing concave plate and the tangential threshing pivot are arranged radially at intervals along the tangential threshing pivot axis, and threshing orifices are formed on the tangential threshing concave plate;

[0020] The concave plate adjustment assembly is used to adjust the distance between the tangential threshing pivot and the tangential threshing concave plate.

[0021] In some embodiments, the tangential threshing device further includes a plurality of threshing grooves mounted on the tangential threshing pivot, the plurality of threshing grooves being arranged circumferentially at intervals along the tangential threshing pivot axis, the threshing grooves extending axially along the tangential threshing pivot axis and forming a plurality of threshing protrusions arranged axially at intervals along the tangential threshing pivot axis.

[0022] In some embodiments, the longitudinal axial flow threshing pivot is provided with an inlet blade, a threshing element and an outlet blade sequentially mounted along the axial direction of the longitudinal axial flow threshing pivot axis.

[0023] In some embodiments, the longitudinal axial flow threshing device includes a longitudinal axial flow shroud covering the longitudinal axial flow threshing pivot, the end of the longitudinal axial flow shroud facing the feeding device having a flared structure.

[0024] In some embodiments, the threshing system further includes a first continuously variable transmission (CVT) assembly, which includes a first drive member, a first continuously variable drive wheel, a feed driven wheel, and a tangential driven wheel. The first drive member is drivenly connected to the first continuously variable drive wheel, the first continuously variable drive wheel is drivenly connected to the feed driven wheel, the feed driven wheel is drivenly connected to the tangential driven wheel, the feed driven wheel is drivenly connected to the input end of the feeding device, and the tangential driven wheel is drivenly connected to the tangential threshing pivot shaft.

[0025] In some embodiments, the threshing system further includes: a second continuously variable transmission (CVT) assembly, the second CVT assembly including a second drive member, a second CVT drive wheel, a longitudinal axial flow driven wheel, and a longitudinal axial flow reversing box; the second drive member is drivenly connected to the second CVT drive wheel; the second CVT drive wheel is drivenly connected to the longitudinal axial flow driven wheel; the longitudinal axial flow driven wheel is drivenly connected to the input end of the longitudinal axial flow reversing box; and the output end of the longitudinal axial flow reversing box is drivenly connected to the longitudinal axial flow threshing pivot shaft.

[0026] A second aspect of this application provides an agricultural machine, including a threshing system for the agricultural machine as described above.

[0027] The agricultural machinery and threshing system provided in this application, through the above technical solutions, have the following beneficial effects:

[0028] Crops enter the threshing system from the harvesting device, forming a crop stream. This crop stream sequentially passes through a tangential flow threshing device, a feeding device, and a longitudinal axial flow threshing device. Specifically, the tangential flow threshing device connects to the harvesting device to smoothly transition the crop stream into the threshing system and perform the first threshing treatment. The feeding device guides the crop stream from the tangential flow threshing device to the longitudinal axial flow threshing device, where the crop undergoes a second threshing treatment. In this application, the crop stream undergoes two threshing treatments via the tangential flow threshing device and the longitudinal axial flow threshing device, thereby extending the time for mechanical impact and friction on the crop, and ultimately improving the threshing efficiency of the threshing system.

[0029] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0030] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings:

[0031] Figure 1 This is a top view of the threshing system according to a specific embodiment of this application;

[0032] Figure 2 for Figure 1 Schematic diagram of the AA section;

[0033] Figure 3 for Figure 2 Enlarged diagram of section B;

[0034] Figure 4 This is a schematic diagram of the structure of the tangential flow threshing device (without tangential flow threshing concave plate) according to a specific embodiment of this application;

[0035] Figure 5 This is a schematic diagram of the structure of the tangential flow threshing concave plate according to a specific embodiment of this application;

[0036] Figure 6 This is a schematic diagram of the feeding device (without a feeding concave plate) according to a specific embodiment of this application;

[0037] Figure 7 This is a schematic diagram of the longitudinal axial flow threshing device (without longitudinal axial flow shroud) according to a specific embodiment of this application.

[0038] Explanation of reference numerals in the attached figures

[0039] 100. Threshing system; 1. Tangential threshing device; 11. Tangential threshing pivot; 12. Tangential threshing pivot shaft; 13. Threshing groove bar; 14. Tangential threshing concave plate; 141. Concave plate round steel; 142. Concave plate grid; 143. Threshing orifice; 15. Tangential conveying channel; 16. Concave plate adjusting assembly; 2. Feeding device; 21. Feeding pivot; 22. Feeding pivot shaft; 23. Feeding mounting plate; 24. Feeding concave plate; 25. Feeding conveying channel; 26. Feeding toothed plate; 27. Feeding blade; 271. Reinforcing plate; 28. Feeding baffle; 3. Longitudinal axial flow threshing device; 31. Longitudinal axial flow threshing pivot; 32. Longitudinal axial flow threshing pivot shaft; 33. Longitudinal axial flow hood; 331. Spiral guide bar; 332. Discharge port; 34. Longitudinal axial flow conveying channel; 35. Inlet blade; 36. Threshing pattern block; 37. Separation tooth block; 38. Outlet blade; 4. Transition piece; 5. First continuously variable transmission assembly; 6. Second continuously variable transmission assembly; 61. Longitudinal axial flow reversing box. Detailed Implementation

[0040] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0041] The following description, with reference to the accompanying drawings, describes the terminology of the agricultural machinery and threshing system according to this application.

[0042] like Figure 1 and Figure 2 As shown, a specific embodiment of this application provides a threshing system 100 for agricultural machinery. The threshing system 100 includes a tangential flow threshing device 1, a longitudinal axial flow threshing device 3, and a feeding device 2. The tangential flow threshing device 1 is located downstream of the harvesting device of the agricultural machinery. The tangential flow threshing device 1 includes a tangential flow threshing pivot 11 and a tangential flow threshing pivot shaft 12, with the pivot 11 rotating around the pivot shaft 12. The longitudinal axial flow threshing device 3 is located downstream of the tangential flow threshing device 1. The longitudinal axial flow threshing device 3 includes a longitudinal axial flow threshing pivot 31 and a pivot shaft 32, with the pivot 31 rotating around the pivot shaft 32. The feeding device 2 is located downstream of the tangential flow threshing device 1 and upstream of the longitudinal axial flow threshing device 3, and is used to transport crop material from the tangential flow threshing device 1 to the longitudinal axial flow threshing device 3.

[0043] The threshing system 100, as a core component of agricultural machinery, is mainly used for threshing crops. Threshing refers to separating the grains of crops from the ears on the straw to obtain the grains and expel the straw from the agricultural machinery. Specifically, it uses high-speed rotating threshing elements to mechanically strike and rub the crops.

[0044] In a specific embodiment of this application, the harvesting device of agricultural machinery harvests crops to form a crop stream. The crop stream passes sequentially through a tangential flow threshing device 1, a feeding device 2, and a longitudinal axial flow threshing device 3. The tangential flow threshing device 1 and the longitudinal axial flow threshing device 3 thresh the crop stream respectively. In other words, the threshing system 100 of this application can perform threshing treatment on the crop stream twice. It can be seen that the threshing effect of the threshing system 100 is significantly improved.

[0045] In fact, the harvesting device has a large lateral width, and the harvesting device can harvest a large number of crops at the same time, that is, the feeding amount of the threshing system 100 is large.

[0046] In a specific embodiment of this application, it is only necessary to set the extension direction of the tangential threshing pivot 11 to be parallel to the extension direction of the harvesting device, so that the crops harvested by the harvesting device at the same time can be completely fed into the tangential threshing pivot 11, so that the harvesting operation of the harvesting device is not affected by the receiving speed of the threshing system 100.

[0047] After the first threshing process by the tangential threshing device 1, most of the easily threshed crops have been threshed. Only some difficult-to-thresh crops need to undergo a second threshing process after being fed into the longitudinal axial flow threshing device 3. Since the axis of the tangential threshing pivot 12 intersects the axis of the longitudinal axial flow threshing pivot 32, the feed amount of the longitudinal axial flow threshing device 3 is less than that of the tangential threshing device 1 in the same amount of time. However, the contact time between the crops and the threshing elements on the longitudinal axial flow threshing pivot 31 is longer. Therefore, the longitudinal axial flow threshing device 3 can complete the threshing process for some difficult-to-thresh crops.

[0048] In other words, even if the feeding device 2 increases the flow rate of the working material to increase the feeding speed of the longitudinal axial flow threshing device 3, it will not affect the threshing effect of the threshing system 100. It can be seen that the threshing system 100 is fully applicable to working conditions with a large feeding volume and can ensure a good threshing effect under working conditions with a large feeding volume.

[0049] It should be noted that the structure and working principle of the harvesting device, the docking relationship and connection structure between the harvesting device and the threshing system 100 are well known to those skilled in the art and are not part of the core inventive points of this application, so they will not be described in detail here.

[0050] Preferably, the axis of the tangential threshing pivot 12 is perpendicular to the axis of the longitudinal axial threshing pivot 32. In other words, the rotation plane of the tangential threshing pivot 11 is parallel to the axis of the longitudinal axial threshing pivot 32. Since the crop material needs to flow from the tangential threshing device 1 to the longitudinal axial threshing device 3, the flow direction on the tangential threshing device 1 is along the circumference of the tangential threshing pivot 12, and the flow direction on the longitudinal axial threshing device 3 is along the axial direction of the longitudinal axial threshing pivot 32. Therefore, arranging the longitudinal axial threshing device 3 and the tangential threshing device 1 perpendicularly is more conducive to the passage of crop material between the tangential threshing device 1 and the longitudinal axial threshing device 3, thereby preventing crops from getting stuck between the tangential threshing device 1 and the longitudinal axial threshing device 3, and thus improving the reliability of the threshing system 100.

[0051] Furthermore, the projection of the axis of the longitudinal axial flow threshing pivot 32 onto the plane containing the axis of the tangential flow threshing pivot 12 passes through the midpoint of the tangential flow threshing pivot 12. The length of the tangential flow threshing device 1 along the axial direction of the tangential flow threshing pivot 12 determines the width of the threshing system 100 along the axial direction of the tangential flow threshing pivot 12, and the length of the longitudinal axial flow threshing device 3 along the axial direction of the longitudinal axial flow threshing pivot 32 determines the length of the threshing system 100 along the axial direction of the longitudinal axial flow threshing pivot 32. Although the width of the longitudinal axial flow threshing device 3 along the axial direction of the tangential flow threshing pivot 12 is much smaller than the length of the tangential flow threshing device 1 along the axial direction of the tangential flow threshing pivot 12, the longitudinal axial flow threshing device 3 also has a certain width along the axial direction of the tangential flow threshing pivot 12. If the longitudinal axial flow threshing pivot 32 is arranged away from the midpoint of the tangential flow threshing pivot 12 along the axial direction, the width of the threshing system 100 along the axial direction of the tangential flow threshing pivot 12 may be increased. Therefore, arranging the longitudinal axial flow threshing device 3 in the center relative to the tangential flow threshing device 1 is beneficial for the threshing system 100 to have a smaller size.

[0052] In some embodiments, the feeding device 2 includes a feeding pivot 21 and a feeding pivot shaft 22. The feeding pivot 21 rotates around the feeding pivot shaft 22. The axis of the feeding pivot shaft 22 is parallel to the axis of the tangential flow threshing pivot shaft 12, and the axis of the feeding pivot shaft 22 is perpendicular to the axis of the longitudinal axial flow threshing pivot shaft 32.

[0053] Specifically, the feeding device 2 is used to introduce the crop material from the tangential threshing device 1 to the longitudinal axial threshing device 3. The crop material needs to flow from the tangential threshing device 1 to the feeding device 2, and then to the longitudinal axial threshing device 3. The flow direction on the tangential threshing device 1 is along the circumference of the tangential threshing pivot axis 12, the flow direction on the feeding device 2 is along the circumference of the feeding pivot axis 22, and the flow direction on the longitudinal axial threshing device 3 is along the axial direction of the longitudinal axial threshing pivot axis 32. It can be seen that arranging the feeding device 2 and the tangential threshing device 1 parallel to each other facilitates the flow of crop material from the tangential threshing device 1 to the feeding device 2, and arranging the feeding device 2 and the longitudinal axial threshing device 3 perpendicular to each other facilitates the flow of crop material from the feeding device 2 to the longitudinal axial threshing device 3. This avoids the crop getting stuck between the tangential threshing device 1 and the longitudinal axial threshing device 3, and between the feeding device 2 and the longitudinal axial threshing device 3, thereby improving the reliability of the threshing system 100.

[0054] Furthermore, the projection of the axis of the longitudinal axial flow threshing pivot 32 onto the plane containing the axis of the feed pivot 22 passes through the midpoint of the axis of the feed pivot 22, which is beneficial for the threshing system 100 to have a smaller size.

[0055] It should be noted that the terms "upper," "lower," "left," "right," "front," "back," "inner," and "outer," etc., indicating orientation or positional relationships, are only for the convenience of describing this application 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, and therefore should not be construed as a limitation on this application. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0056] In the specific embodiments of this application, for ease of description, it is specified that the axial direction of the tangential flow threshing pivot 12 and the axial direction of the feed pivot 22 are both left and right, and the axial direction of the longitudinal flow threshing pivot 32 is front and back. The specific directions indicated by "up", "down", "left", "right", "front" and "back" are shown by the arrows in the accompanying drawings.

[0057] like Figure 4 and Figure 5 As shown, in some embodiments, the tangential threshing device 1 further includes a plurality of threshing grooves 13 mounted on the tangential threshing pivot 11. The plurality of threshing grooves 13 are arranged circumferentially at intervals along the tangential threshing pivot 12. The threshing grooves 13 extend axially along the tangential threshing pivot 12 and form a plurality of threshing protrusions arranged axially at intervals along the tangential threshing pivot 12. A threshing groove is formed between two adjacent threshing protrusions. The threshing protrusions and the threshing groove form a brush-like structure to mechanically strike and rub the crops.

[0058] The tangential threshing device 1 also includes a tangential threshing concave plate 14. The tangential threshing concave plate 14 and the tangential threshing pivot 11 are arranged radially at intervals along the tangential threshing pivot axis 12. A tangential conveying channel 15 is formed between the tangential threshing concave plate 14 and the tangential threshing pivot 11. Threshing holes 143 are formed on the tangential threshing concave plate 14.

[0059] Specifically, the crop material enters the tangential conveying channel 15 from the harvesting device. The tangential threshing pivot 11 rotates from the upstream side to the downstream side, driving the threshing bar 13 and threshing protrusions to thresh the crops in the tangential conveying channel 15, forming a crop material that flows from the tangential threshing device 1 to the feeding device 2. Some of the crop grains will separate from the straw and enter the cleaning device of the agricultural machinery through the threshing orifice 143 under the action of gravity. The threshed crops, unthreshed crops, and grains that have not passed through the threshing orifice 143 form a crop material that flows through the tangential conveying channel 15 to the feeding device 2.

[0060] Furthermore, the shredding concave plate 14 includes concave plate round steel 141 and concave plate grid 142. The concave plate grid 142 has a plurality of grid holes spaced longitudinally. The number of concave plate round steel 141 is multiple. The multiple concave plate round steel 141 are arranged laterally at intervals and extend longitudinally to the end of the concave plate grid 142 to divide the grid holes into threshing orifices 143.

[0061] The size of the threshing orifice 143 directly affects the threshing effect and grain cleanliness. Therefore, the size of the threshing orifice 143 on the tangential threshing concave plate 14 needs to be set according to the crop variety. In other words, different tangential threshing concave plates 14 with different threshing orifice sizes 143 are required for different crop varieties. For example, when harvesting wheat, the threshing orifice 143 is generally designed to be between 200mm-260mm in length and 15mm-20mm in width.

[0062] like Figure 2 As shown, preferably, the tangential threshing device 1 further includes a concave plate adjustment assembly 16. The concave plate adjustment assembly 16 is used to adjust the distance between the tangential threshing pivot 11 and the tangential threshing concave plate 14, that is, the size of the tangential conveying channel 15. The size of the tangential conveying channel 15 affects parameters such as threshing effect, grain breakage rate, and straw passage speed. Therefore, in actual operation, it is necessary to adjust the size of the tangential conveying channel 15 according to the crop variety to take into account parameters such as threshing effect, grain breakage rate, and straw passage speed, thereby improving the practicality and reliability of the threshing system 100.

[0063] It should be noted that the specific size of the tangential flow conveying channel 15 can be obtained based on experience. Before threshing, the position of the tangential flow threshing concave plate 14 can be adjusted by the concave plate adjustment assembly 16. The specific structure and adjustment method of the concave plate adjustment assembly 16 are well known to those skilled in the art and are not part of the core inventive point of this application, so they will not be described in detail here.

[0064] like Figure 4 As shown, in some embodiments, the tangential threshing pivot 11 is a drum web, which has several weight-reducing holes. Multiple drum webs are coaxially sleeved on the tangential threshing pivot 12 and fixed to the tangential threshing pivot 12 by web clamps. Multiple drum webs are arranged at intervals along the axial direction of the tangential threshing pivot 12. Multiple mounting protrusions are formed on the drum web, and threshing bars 13 are mounted on the mounting protrusions. The threshing protrusions are arranged on the side of the threshing bars 13 facing away from the drum web.

[0065] like Figure 6 As shown, in some embodiments, the feeding device 2 further includes a plurality of feeding mounting plates 23 mounted on the feeding pivot 21. The plurality of feeding mounting plates 23 are arranged circumferentially at intervals along the feeding pivot shaft 22. The feeding mounting plates 23 extend axially along the feeding pivot shaft 22 and have a certain width radially along the feeding pivot shaft 22. The feeding mounting plates 23 push the crops from the feeding device 2 to the longitudinal axial flow threshing device 3 along the circumferential direction of the feeding pivot shaft 22 as the feeding pivot 21 rotates.

[0066] like Figure 2 As shown, the feeding device 2 also includes a feeding concave plate 24. The feeding concave plate 24 and the feeding pivot 21 are arranged at intervals and a feeding conveying channel 25 is formed between the feeding concave plate 24 and the feeding pivot 21. The feeding concave plate 24 is located downstream of the tangential flow threshing concave plate 14. After the crops enter the feeding conveying channel 25 through the tangential flow conveying channel 15, they flow to the longitudinal axial flow threshing device 3 under the push of the feeding mounting plate 23.

[0067] like Figure 6 As shown, preferably, the feeding device 2 further includes a feeding toothed plate 26, which extends axially along the feeding pivot shaft 22 and is mounted on the feeding mounting plate 23. The feeding toothed plate 26 has a toothed structure formed on the plate edge that is radially away from the feeding pivot shaft 22, so as to mechanically strike and rub the crops, thereby completing the threshing process of part of the crops and improving the threshing efficiency of the threshing system 100.

[0068] It should be noted that the feeding toothed plate 26 is detachably connected to the feeding mounting plate 23. The feeding toothed plate 26 is made of elastic materials such as rubber to reduce damage to the grain, thereby reducing the grain breakage rate.

[0069] like Figure 3As shown, preferably, a transition piece 4 is provided between the feeding concave plate 24 and the tangential threshing concave plate 14. The transition piece 4 covers the installation gap between the feeding concave plate 24 and the tangential threshing concave plate 14, so that the working material can flow smoothly from the feeding concave plate 24 to the feeding concave plate 24, thereby improving the smoothness of the working material flow and thus improving the reliability of the threshing system 100.

[0070] It should be noted that the transition piece 4 can be an arc-shaped plate, with the two ends of the arc-shaped plate connected to the feeding concave plate 24 and the tangential flow threshing concave plate 14, respectively.

[0071] like Figure 6 As shown, in some embodiments, each feeding mounting plate 23 is connected to feeding blades 27 at both ends to form a transverse conveying channel between two adjacent feeding mounting plates 23. Crops can flow from the left and right ends of the feeding pivot 21 to the center through the transverse conveying channel. The feeding blades 27 rotate with the feeding pivot 21 to make a spiral motion, so as to push the crops to flow from the left and right ends of the feeding pivot 21 to the center through the transverse conveying channel.

[0072] Specifically, since the longitudinal axial flow threshing pivot 31 is centrally located relative to the feeding device 2, and the width of the feeding device 2 in the left-right direction is greater than the width of the longitudinal axial flow threshing pivot 31, the crop material can flow smoothly from the feeding device 2 to the longitudinal axial flow device by conveying the crops at both ends of the feeding device 2 to the middle, thereby improving the smoothness of the crop material flow and thus improving the reliability of the threshing system 100.

[0073] Preferably, the feeding blade 27 has a spiral structure. One end of the feeding blade 27 is connected to the axial end of the feeding mounting plate 23, and the other end extends to the axial end of the feeding pivot 21 located on the same side as the axial end of the feeding mounting plate 23. The side of the feeding blade 27 facing the feeding pivot 21 is completely attached to and welded to the outer peripheral wall of the feeding pivot 21, so that the feeding blade 27 can better transport the crops from the left and right ends to the middle.

[0074] Furthermore, a reinforcing plate 271 is connected to one end of the feeding blade 27 that is flush with the end of the feeding pivot 21. The side of the reinforcing plate 271 facing the feeding pivot 21 is completely attached to and welded to the outer peripheral wall of the feeding pivot 21 to increase the connection area between the feeding blade 27 and the feeding pivot 21, thereby strengthening the connection strength between the feeding blade 27 and the feeding pivot 21. The reinforcing plate 271 is also used to prevent the crops from moving away from the center, so that the feeding blade 27 can better transport the crops from the left and right ends to the center.

[0075] like Figure 6As shown, in some embodiments, the feeding device 2 further includes a feeding baffle 28. Multiple feeding baffles 28 are arranged between each pair of adjacent feeding mounting plates 23. The multiple feeding baffles 28 between the pair of adjacent feeding mounting plates 23 in the same group are arranged at axial intervals along the feeding pivot shaft 22, and a circumferential conveying channel is formed between adjacent feeding baffles 28.

[0076] Specifically, the work material moves circumferentially along the feeding pivot shaft 22 under the action of the feeding mounting plate 23, and moves axially along the feeding pivot shaft 22 under the action of the spiral blades. The convergence of the two work materials on the feeding pivot 21 will cause the work material to become disordered and unable to be smoothly conveyed to the longitudinal axial flow threshing device 3. The work material is reorganized by the circumferential conveying channel formed by the feeding baffle 28, so that the disordered work material is re-divided into multiple work materials to be conveyed to the longitudinal axial flow threshing device 3, thereby improving the smoothness of the work material flow and thus improving the reliability of the threshing system 100.

[0077] like Figure 2 and Figure 7 As shown, in some embodiments, the longitudinal axial flow threshing device 3 includes a longitudinal axial flow shroud 33 covering the longitudinal axial flow threshing pivot 31, and the end of the longitudinal axial flow shroud 33 facing the feeding device 2 has a flared structure. Since the longitudinal axial flow threshing pivot 31 is centrally arranged relative to the feeding device 2, and the width of the feeding device 2 in the left-right direction is greater than the width of the longitudinal axial flow threshing pivot 31, the crop material initially gathered towards the center by the action of the feeding device 2 needs to be gathered again by the flared structure of the longitudinal axial flow shroud 33, so that the crop material flows towards the longitudinal axial flow threshing pivot 31, thereby improving the smoothness of crop material flow and thus improving the reliability of the threshing system 100.

[0078] Specifically, the longitudinal axial flow shroud 33 includes an upper shroud plate and a lower shroud plate. The longitudinal axial flow threshing pivot 31 and the longitudinal axial flow threshing pivot shaft 32 are located within the space enclosed by the upper shroud plate and the lower shroud plate. A longitudinal axial flow conveying channel 34 is formed between the longitudinal axial flow threshing pivot 31 and the lower shroud plate. The feeding concave plate 24 overlaps with the lower shroud plate so that the workpiece material can smoothly enter the longitudinal axial flow conveying channel 34 from the feeding conveying channel 25 under the action of the longitudinal axial flow device, thereby improving the smoothness of the workpiece material flow and thus improving the reliability of the threshing system 100.

[0079] like Figure 2 and Figure 7 As shown, in some embodiments, the longitudinal axial flow threshing pivot 31 includes a feeding section, a threshing section, a separation section, and a discharge section coaxially connected along the longitudinal axial flow threshing pivot shaft 32. The feeding section has a frustum structure, and the threshing section, separation section, and discharge section form a cylindrical structure. The large-diameter end of the feeding section is connected to the threshing end, and the small-diameter end of the feeding section is located inside the flared mouth structure of the longitudinal axial flow shroud 33.

[0080] Specifically, the feeding section is equipped with multiple guide blades 35, which are spiral in shape. The guide blades 35 rotate with the feeding section to make spiral motion, thereby pushing the workpiece material backward. The threshing element on the threshing section is a threshing block 36, which is mainly used for threshing. The threshing element on the separation section is a separation tooth block 37, which is mainly used to separate the threshed grain and straw. The discharge section is equipped with multiple outlet blades 38, which rotate with the discharge section to make spiral motion, thereby pushing the workpiece material out of the longitudinal axial flow cover 33.

[0081] Correspondingly, the inner circumferential wall of the upper cover plate is provided with multiple spiral guide strips 331. After the crop is pushed from the feeding section to the threshing section and the separation section by the guide blades 35, the threshing blocks 36 on the threshing section and the separation teeth 37 on the separation section do not have the ability to push the crop backward. The spiral guide strips 331 make spiral movements relative to the longitudinal axial flow threshing pivot 31 during the rotation of the longitudinal axial flow threshing pivot 31 to push the crop material backward. Threshing holes 143 are formed on the lower cover plate. The area of ​​the threshing holes 143 must at least completely cover the threshing section and the separation section so that the grain separated by the threshing blocks 36 and the separation teeth 37 can fall into the cleaning device through the threshing holes 143. The rear end of the lower cover plate is provided with a discharge port 332, which corresponds to the position of the discharge section so that the guide blades 38 push the crop material through the discharge port 332 and out of the longitudinal axial flow cover 33.

[0082] It should be noted that the shapes of the inlet blade 35, the outlet blade 38, the threshing block 36, the separation tooth block 37, and the spiral guide bar 331 are all well known to those skilled in the art and are not part of the core inventive points of this application, so they will not be described in detail here.

[0083] like Figure 1 and Figure 2 As shown, in some embodiments, the threshing system 100 further includes a first continuously variable transmission (CVT) component 5 and a second continuously variable transmission (CVT) component 6.

[0084] Specifically, the first continuously variable transmission (CVT) assembly 5 includes a first drive component, a first continuously variable drive wheel, a feeding driven wheel, and a tangential driven wheel. The first drive component is driven to the first continuously variable drive wheel, the first continuously variable drive wheel is driven to the feeding driven wheel, the feeding driven wheel is driven to the tangential driven wheel, the feeding driven wheel is driven to the input end of the feeding device 2, and the tangential driven wheel is driven to the tangential threshing pivot shaft 12. The first CVT assembly 5 enables speed regulation of the feeding device 2 and the tangential threshing device 1, allowing the speed of the threshing system 100 to be continuously adjusted according to actual operating conditions and crop varieties, thereby improving the practicality of the threshing system 100.

[0085] The second continuously variable transmission (CVT) assembly 6 includes a second drive component, a second continuously variable drive wheel, a longitudinal axial flow driven wheel, and a longitudinal axial flow reversing box 61. The second drive component is driven by the second continuously variable drive wheel, the second continuously variable drive wheel is driven by the longitudinal axial flow driven wheel, the longitudinal axial flow driven wheel is driven by the input end of the longitudinal axial flow reversing box 61, and the output end of the longitudinal axial flow reversing box 61 is driven by the longitudinal axial flow threshing pivot shaft 32. The second continuously variable transmission assembly 6 enables speed adjustment of the longitudinal axial flow threshing device 3, allowing the speed of the threshing system 100 to be continuously adjusted according to actual operating conditions and crop varieties, thereby improving the practicality of the threshing system 100.

[0086] It should be noted that the first and second driving components can be active rotating shafts driven by motors or engines. The structure and principle of continuously variable transmission and the structure and principle of longitudinal axial flow reversing box 61 are well known to those skilled in the art and are not part of the core inventive points of this application, so they will not be described in detail here.

[0087] like Figure 1 and Figure 2 As shown in this application, firstly, crops enter the threshing system 100 from the harvesting device. Secondly, under the action of the tangential flow threshing device 1, the crops pass through the tangential flow conveying channel 15 and undergo a first threshing process by the threshing groove bar 13. Next, under the action of the feeding device 2, the crops pass through the feeding conveying channel 25 and undergo a second threshing process by the feeding toothed plate 26. Then, under the action of the longitudinal axial flow threshing device 3, the crops pass through the longitudinal axial flow conveying channel 34 and undergo a third threshing process by the threshing groove block 36 and a fourth threshing process by the separating toothed block 37. Finally, the threshed straw flows out from the discharge port 332. Throughout the process, the crops undergo four threshing processes, significantly improving the threshing efficiency of the threshing system 100.

[0088] Furthermore, by setting the feeding device 2 and the funnel-shaped structure of the longitudinal axial flow shroud 33, the crop can be smoothly transitioned from the tangential flow threshing device 1 to the longitudinal axial flow threshing device 3, so as to make the threshing system 100 take advantage of the transverse axial flow threshing technology and the single longitudinal axial flow technology, thereby improving the threshing efficiency and threshing effect of the threshing system 100.

[0089] It should be noted that, for ease of understanding, the flow of crops throughout the process is shown by the arrows in the attached diagram of the instruction manual. The crops mentioned in this application can be wheat, corn, and rice, etc., and the agricultural machinery mentioned in this application can be a wheat harvester, a rice harvester, or a combine harvester.

[0090] Specific embodiments of this application provide an agricultural machine including a threshing system 100, a harvesting device, and a cleaning device. Since the agricultural machine employs all embodiments of the threshing system 100, it possesses all the beneficial effects of the threshing system 100.

[0091] It should be noted that the structure and principle of the harvesting device and the cleaning device are well known to those skilled in the art and are not part of the core inventive points of this application, so they will not be described in detail here.

[0092] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0093] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0094] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0095] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A threshing system of an agricultural machine, characterized in that, The threshing system (100) includes: A tangential threshing device (1) is located downstream of the harvesting device of an agricultural machine. The tangential threshing device (1) includes a tangential threshing pivot (11) and a tangential threshing pivot shaft (12). The tangential threshing pivot (11) rotates around the tangential threshing pivot shaft (12). A longitudinal axial flow threshing device (3) is located downstream of the tangential flow threshing device (1). The longitudinal axial flow threshing device (3) includes a longitudinal axial flow threshing pivot (31) and a longitudinal axial flow threshing pivot shaft (32). The longitudinal axial flow threshing pivot (31) rotates around the longitudinal axial flow threshing pivot shaft (32). Feeding device (2) is located downstream of the tangential flow threshing device (1) and upstream of the longitudinal axial flow threshing device (3). The feeding device (2) is used to transport the work material from the tangential flow threshing device (1) to the longitudinal axial flow threshing device (3).

2. The threshing system of an agricultural machine according to claim 1, characterized in that, The axis of the tangential flow threshing pivot (12) is perpendicular to the axis of the longitudinal flow threshing pivot (32).

3. The threshing system of an agricultural machine according to claim 2, characterized in that, The feeding device (2) includes a feeding pivot (21) and a feeding pivot shaft (22). The feeding pivot (21) rotates around the feeding pivot shaft (22). The axis of the feeding pivot shaft (22) is parallel to the axis of the tangential flow threshing pivot shaft (12) and perpendicular to the axis of the longitudinal axial flow threshing pivot shaft (32).

4. The threshing system of an agricultural machine according to claim 3, characterized in that, The projection of the axis of the longitudinal axial flow threshing pivot (32) onto the plane containing the axis of the tangential flow threshing pivot (12) passes through the midpoint of the tangential flow threshing pivot (12); The projection of the axis of the longitudinal axial flow threshing pivot (32) onto the plane containing the axis of the feed pivot (22) passes through the midpoint of the axis of the feed pivot (22).

5. The threshing system of an agricultural machine according to claim 4, characterized in that, The feeding device (2) includes: Feeding mounting plate (23), the number of the feeding mounting plates (23) is multiple and the multiple feeding mounting plates (23) are arranged circumferentially on the feeding pivot (21) along the feeding pivot axis (22), and the feeding mounting plates (23) extend axially along the feeding pivot axis (22); Feeding blade (27) is a spiral structure. The feeding blade (27) is connected to the axial end of the feeding mounting plate (23) and extends to the axial end of the feeding pivot (21) located on the same side as the axial end of the feeding mounting plate (23). Feeding baffles (28) are provided, and the number of feeding baffles (28) is multiple and the multiple feeding baffles (28) are arranged at axial intervals between two adjacent feeding mounting plates (23) along the feeding pivot axis (22).

6. The threshing system of an agricultural machine according to claim 5, characterized in that, The feeding device (2) further includes a feeding toothed plate (26), which extends axially along the feeding pivot shaft (22) and is mounted on the feeding mounting plate (23). The feeding toothed plate (26) has a toothed structure formed on the plate edge that is radially away from the feeding pivot shaft (22).

7. The threshing system of an agricultural machine according to any one of claims 1 to 6, characterized in that, The tangential threshing device (1) further includes: A tangential threshing concave plate (14) is arranged radially spaced from the tangential threshing pivot (11) along the tangential threshing pivot axis (12), and threshing orifices (143) are formed on the tangential threshing concave plate (14); and, The concave plate adjustment assembly (16) is used to adjust the distance between the tangential threshing pivot (11) and the tangential threshing concave plate (14).

8. The threshing system of an agricultural machine according to any one of claims 1 to 6, characterized in that, The tangential threshing device (1) further includes a plurality of threshing bars (13) mounted on the tangential threshing pivot (11). The plurality of threshing bars (13) are arranged circumferentially at intervals along the tangential threshing pivot (12). The threshing bars (13) extend axially along the tangential threshing pivot (12) and form a plurality of threshing protrusions arranged axially at intervals along the tangential threshing pivot (12).

9. The threshing system of an agricultural machine according to any one of claims 1 to 6, characterized in that, The longitudinal axial flow threshing pivot (31) is sequentially equipped with an inlet blade (35), a threshing element, and an outlet blade (38) along the axial direction of the longitudinal axial flow threshing pivot shaft (32).

10. The threshing system of an agricultural machine according to any one of claims 1 to 6, characterized in that, The longitudinal axial flow threshing device (3) includes a longitudinal axial flow shroud (33) covering the longitudinal axial flow threshing pivot (31), and the end of the longitudinal axial flow shroud (33) facing the feeding device (2) has a flared mouth structure.

11. The threshing system of an agricultural machine according to any one of claims 1 to 6, characterized in that, The threshing system (100) also includes: A first continuously variable transmission (CVT) assembly (5) includes a first drive member, a first continuously variable drive wheel, a feeding driven wheel, and a tangential driven wheel. The first drive member is drivenly connected to the first continuously variable drive wheel, the first continuously variable drive wheel is drivenly connected to the feeding driven wheel, the feeding driven wheel is drivenly connected to the tangential driven wheel, the feeding driven wheel is drivenly connected to the input end of the feeding device (2), and the tangential driven wheel is drivenly connected to the tangential threshing pivot shaft (12); and / or, The second continuously variable transmission (CVT) assembly (6) includes a second drive member, a second continuously variable drive wheel, a longitudinal axial flow driven wheel, and a longitudinal axial flow reversing box (61). The second drive member is drivenly connected to the second continuously variable drive wheel, the second continuously variable drive wheel is drivenly connected to the longitudinal axial flow driven wheel, the longitudinal axial flow driven wheel is drivenly connected to the input end of the longitudinal axial flow reversing box (61), and the output end of the longitudinal axial flow reversing box (61) is drivenly connected to the longitudinal axial flow threshing pivot shaft (32).

12. An agricultural machine characterized by, The threshing system (100) of agricultural machinery according to any one of claims 1 to 11.

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