Agricultural machine and threshing system thereof

Abstract

The invention 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 equipment, and specifically relates to an agricultural machine and its threshing system. Background Art

[0002] In the process of agricultural modernization, with the continuous expansion of the scale of agricultural production, higher requirements are put forward for the working speed and crop processing capacity of agricultural machinery. Among them, the development of threshing technology for agricultural machinery has greatly improved the crop processing capacity of agricultural machinery. The threshing operation of agricultural machinery is performed by a threshing system. Threshing treatment refers to separating the grains of crops from the ear heads on the straw, specifically by mechanically hitting and rubbing the crops with a high-speed rotating threshing element.

[0003] In the prior art, the cross-flow threshing technology is used to thresh crops. The threshing system of the cross-flow threshing technology has a relatively large lateral width and a relatively small longitudinal length. In other words, a relatively large number of crops can be fed in at the same time, but the contact time between the threshing system and the crops is short. Therefore, the threshing effect is not good. Summary of the Invention

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

[0005] To achieve the above purpose, on the one hand, this application provides a threshing system for an agricultural machine, and the threshing system includes:

[0006] A tangential flow threshing device, the tangential flow threshing device is located on the downstream side of the harvesting device of the agricultural machine. The tangential flow threshing device includes a tangential flow threshing pivot and a tangential flow threshing pivot shaft, and the tangential flow threshing pivot rotates around the tangential flow threshing pivot shaft;

[0007] An axial flow threshing device, the axial flow threshing device is located on the downstream side of the tangential flow threshing device. The axial flow threshing device includes an axial flow threshing pivot and an axial flow threshing pivot shaft, and the axial flow threshing pivot rotates around the axial flow threshing pivot shaft;

[0008] A feeding device, the feeding device is located on the downstream side of the tangential flow threshing device and on the upstream side of the axial flow threshing device, and the feeding device is used to convey the crop flow from the tangential flow threshing device to the axial flow threshing device.

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

[0010] In some embodiments, the feeding device includes a feeding pivot and a feeding pivot shaft. The feeding pivot rotates around the feeding pivot shaft, and the axis of the feeding pivot shaft is 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 shaft on the plane where the axis of the tangential flow threshing pivot shaft is located passes through the midpoint of the tangential flow threshing pivot shaft.

[0012] The projection of the axis of the longitudinal axial flow threshing pivot shaft on the plane where the axis of the feeding pivot shaft is located passes through the midpoint of the axis of the feeding pivot shaft.

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

[0014] Feeding mounting plates. The number of the feeding mounting plates is multiple, and the multiple feeding mounting plates are arranged at intervals along the circumferential direction of the feeding pivot shaft on the feeding pivot, and the feeding mounting plates extend along the axial direction of the feeding pivot shaft.

[0015] Feeding vanes. The feeding vanes are of a spiral structure. The feeding vanes are connected to the axial ends of the feeding mounting plates and extend to the axial end of the feeding pivot on the same side as the axial ends of the feeding mounting plates.

[0016] Feeding partitions. The number of the feeding partitions is multiple, and the multiple feeding partitions are arranged at intervals along the axial direction of the feeding pivot shaft between two adjacent feeding mounting plates.

[0017] In some embodiments, the feeding device further includes a feeding toothed plate. The feeding toothed plate extends along the axial direction of the feeding pivot shaft and is mounted on the feeding mounting plate. A toothed structure is formed on the edge of the feeding toothed plate that deviates from the feeding pivot shaft along the radial direction of the feeding pivot shaft.

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

[0019] A tangential flow threshing concave plate. The tangential flow threshing concave plate is arranged at a radial interval from the tangential flow threshing pivot along the tangential flow threshing pivot shaft, and threshing pores are formed on the tangential flow threshing concave plate.

[0020] A concave plate adjusting assembly for adjusting the distance between the tangential flow threshing pivot and the tangential flow threshing concave plate.

[0021] In some embodiments, the axial-flow threshing device further includes a plurality of threshing rasp bars mounted on the axial-flow threshing pivot member. The plurality of threshing rasp bars are arranged at intervals in the circumferential direction of the axial-flow threshing pivot axis. The threshing rasp bars extend along the axial direction of the axial-flow threshing pivot axis and are formed with a plurality of threshing protrusions arranged at intervals in the axial direction of the axial-flow threshing pivot axis.

[0022] In some embodiments, an inlet vane, a threshing element, and an outlet vane are sequentially mounted on the axial-flow threshing pivot member along the axial direction of the axial-flow threshing pivot axis.

[0023] In some embodiments, the axial-flow threshing device includes an axial-flow housing covering the axial-flow threshing pivot member. The end of the axial-flow housing facing the feeding device is formed with a flared structure.

[0024] In some embodiments, the threshing system further includes a first infinitely variable speed assembly. The first infinitely variable speed assembly includes a first driving member, a first infinitely variable driving wheel, a feeding driven wheel, and an axial-flow driven wheel. The first driving member is drivingly connected to the first infinitely variable driving wheel. The first infinitely variable driving wheel is drivingly connected to the feeding driven wheel. The feeding driven wheel is drivingly connected to the axial-flow driven wheel. The feeding driven wheel is drivingly connected to the input end of the feeding device. The axial-flow driven wheel is drivingly connected to the axial-flow threshing pivot axis.

[0025] In some embodiments, the threshing system further includes a second infinitely variable speed assembly. The second infinitely variable speed assembly includes a second driving member, a second infinitely variable driving wheel, an axial-flow driven wheel, and an axial-flow reversing box. The second driving member is drivingly connected to the second infinitely variable driving wheel. The second infinitely variable driving wheel is drivingly connected to the axial-flow driven wheel. The axial-flow driven wheel is drivingly connected to the input end of the axial-flow reversing box. The output end of the axial-flow reversing box is drivingly connected to the axial-flow threshing pivot axis.

[0026] The second aspect of the present application provides an agricultural machine, including the threshing system of the agricultural machine as described above.

[0027] By the above technical solutions, the agricultural machine and the threshing system provided by the present application have the following beneficial effects:

[0028] Crops enter the threshing system through a harvesting device to form a crop flow. The crop flow passes through a tangential flow threshing device, a feeding device, and an axial flow threshing device in sequence. Specifically, the tangential flow threshing device is docked with the harvesting device to smoothly transition the crop flow into the threshing system and perform the first threshing treatment on the crops. The feeding device guides the crop flow from the tangential flow threshing device to the axial flow threshing device, and the axial flow threshing device performs the second threshing treatment on the crops. In this application, the crop flow is threshed twice by the tangential flow threshing device and the axial flow threshing device, thereby extending the time of mechanical impact and friction on the crops, and further improving the threshing effect of the threshing system on the crops.

[0029] Other features and advantages of the embodiments of this application will be described in detail in the subsequent specific embodiment part. Brief Description of the Drawings

[0030] The drawings are used to provide a further understanding of the embodiments of this application, and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts. In the drawings:

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

[0032] Figure 2 is Figure 1 a schematic cross-sectional view taken along line A-A in

[0033] Figure 3 is Figure 2 an enlarged schematic diagram of part B in

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

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

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

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

[0038] Description of the Reference Numerals

[0039] 100, Threshing system; 1, Tangential flow threshing device; 11, Tangential flow threshing pivot; 12, Tangential flow threshing pivot shaft; 13, Threshing rasp bar; 14, Tangential flow threshing concave plate; 141, Concave plate round steel; 142, Concave plate grid; 143, Threshing aperture; 15, Tangential flow 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, Reinforcement plate; 28, Feeding partition; 3, Axial flow threshing device; 31, Axial flow threshing pivot; 32, Axial flow threshing pivot shaft; 33, Axial flow cover; 331, Spiral guide strip; 332, Discharge port; 34, Axial flow conveying channel; 35, Introduction blade; 36, Threshing block; 37, Separation tooth block; 38, Discharge blade; 4, Transition piece; 5, First infinitely variable speed assembly; 6, Second infinitely variable speed assembly; 61, Axial flow reversing box. Detailed implementation manners

[0040] The following will describe in detail the specific implementation manners of the present application with reference to the accompanying drawings. It should be understood that the specific implementation manners described herein are only used to illustrate and explain the present application, and are not used to limit the present application.

[0041] The following describes the noun part of the agricultural machinery and its threshing system 100 according to the present application with reference to the drawings.

[0042] As Figure 1 and Figure 2 shown, a specific embodiment of the present application provides a threshing system 100 for an agricultural machinery. The threshing system 100 includes a tangential flow threshing device 1, an axial flow threshing device 3, and a feeding device 2. Among them, the tangential flow threshing device 1 is located on the downstream side 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, and the tangential flow threshing pivot 11 rotates around the tangential flow threshing pivot shaft 12; the axial flow threshing device 3 is located on the downstream side of the tangential flow threshing device 1. The axial flow threshing device 3 includes an axial flow threshing pivot 31 and an axial flow threshing pivot shaft 32, and the axial flow threshing pivot 31 rotates around the axial flow threshing pivot shaft 32; the feeding device 2 is located on the downstream side of the tangential flow threshing device 1 and on the upstream side of the axial flow threshing device 3. The feeding device 2 is used to convey the crop flow from the tangential flow threshing device 1 to the axial flow threshing device 3.

[0043] As the core component of the agricultural machinery, the threshing system 100 is mainly used for threshing crops. Threshing refers to separating the grains of the crops from the spikes on the straw to obtain the grains of the crops and discharging the straw of the crops from the agricultural machinery. Specifically, mechanical striking and friction are applied to the crops by high-speed rotating threshing elements.

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

[0045] In fact, the transverse width of the harvesting device is relatively large, and the number of crops harvested by the harvesting device at the same time is relatively large, that is, the feeding amount of the threshing system 100 is relatively large.

[0046] In a specific embodiment of the present application, as long as the extending direction of the tangential flow threshing pivot 11 is set to be parallel to the extending direction of the harvesting device, the crops harvested by the harvesting device at the same time can be completely fed into the tangential flow 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 treatment by the tangential flow threshing device 1, most of the crops that are easily threshed have been threshed. Only some crops that are difficult to thresh need to be subjected to the second threshing treatment after being fed into the axial flow threshing device 3. Also, since the axis of the tangential flow threshing pivot shaft 12 intersects the axis of the axial flow threshing pivot shaft 32, that is, the feeding amount of the axial flow threshing device 3 within the same time is less than that of the tangential flow threshing device 1, but the contact time between the crops and the threshing elements on the axial flow threshing pivot 31 is longer. Therefore, the axial flow threshing device 3 can complete the threshing treatment of some crops that are difficult to thresh.

[0048] In other words, even if the feeding device 2 accelerates the flow rate of the crop flow to accelerate the feeding speed of the 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 can be fully applicable to the working conditions with a large feeding amount and can ensure a good threshing effect under the working conditions with a large feeding amount.

[0049] It should be noted that the structure and working principle of the harvesting device, and 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 do not belong to the core inventive points of the present application, so they will not be elaborated here.

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

[0051] Furthermore, the projection of the axis of the longitudinal axial flow threshing pivot shaft 32 on the plane where the axis of the tangential threshing pivot shaft 12 lies passes through the midpoint of the tangential threshing pivot shaft 12. The length of the tangential threshing device 1 along the axial direction of the tangential threshing pivot shaft 12 determines the width of the threshing system 100 along the axial direction of the tangential threshing pivot shaft 12, and the length of the longitudinal axial flow threshing device 3 along the axial direction of the longitudinal axial flow threshing pivot shaft 32 determines the length of the threshing system 100 along the axial direction of the longitudinal axial flow threshing pivot shaft 32. Although the width of the longitudinal axial flow threshing device 3 along the axial direction of the tangential threshing pivot shaft 12 is much smaller than the length of the tangential threshing device 1 along the axial direction of the tangential threshing pivot shaft 12, the longitudinal axial flow threshing device 3 also has a certain width along the axial direction of the tangential threshing pivot shaft 12. If the longitudinal axial flow threshing pivot shaft 32 is arranged along the axial direction of the tangential threshing pivot shaft 12 deviating from the midpoint of the tangential threshing pivot shaft 12, it may increase the width of the threshing system 100 along the axial direction of the tangential threshing pivot shaft 12. Therefore, arranging the longitudinal axial flow threshing device 3 centered relative to the tangential 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 member 21 and a feeding pivot shaft 22. The feeding pivot member 21 rotates around the feeding pivot shaft 22. The axis of the feeding pivot shaft 22 is parallel to the axis of the tangential 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 flow from the tangential threshing device 1 into the axial-flow tangential threshing device 1. The crop flow needs to flow from the tangential threshing device 1 to the feeding device 2 and then to the axial-flow threshing device 3. The flow direction on the tangential threshing device 1 is along the circumferential direction of the tangential threshing pivot shaft 12, the flow direction on the feeding device 2 is along the circumferential direction of the feeding pivot shaft 22, and the flow direction on the axial-flow threshing device 3 is along the axial direction of the axial-flow threshing pivot shaft 32. It can be seen that arranging the feeding device 2 parallel to the tangential threshing device 1 is conducive to the crop flow flowing from the tangential threshing device 1 to the feeding device 2, and arranging the feeding device 2 perpendicular to the axial-flow threshing device 3 is conducive to the crop flow flowing from the feeding device 2 to the axial-flow threshing device 3, thereby avoiding the crops being stuck between the tangential threshing device 1 and the axial-flow threshing device 3, and between the feeding device 2 and the axial-flow threshing device 3, and further improving the reliability of the threshing system 100.

[0054] Furthermore, the projection of the axis of the axial-flow threshing pivot shaft 32 on the plane where the axis of the feeding pivot shaft 22 is located passes through the midpoint of the axis of the feeding pivot shaft 22, which is conducive to the threshing system 100 having a smaller size.

[0055] It should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "inner", "outer", etc. is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0056] In the specific embodiments of the present application, for the convenience of description, it is stipulated that the axial directions of both the tangential threshing pivot shaft 12 and the feeding pivot shaft 22 are the left-right direction, the axial direction of the axial-flow threshing pivot shaft 32 is the front-rear direction, and the specific orientations indicated by "upper", "lower", "left", "right", "front", "rear" are as shown by the arrows in the accompanying drawings of the specification.

[0057] As Figure 4 and Figure 5 shown, in some embodiments, the tangential threshing device 1 further includes a plurality of threshing rasp bars 13 installed on the tangential threshing pivot member 11. The plurality of threshing rasp bars 13 are arranged at intervals along the circumferential direction of the tangential threshing pivot shaft 12. The threshing rasp bars 13 extend along the axial direction of the tangential threshing pivot shaft 12 and are formed with a plurality of threshing protrusions arranged at intervals along the axial direction of the tangential threshing pivot shaft 12. A threshing groove is formed between two adjacent threshing protrusions. The threshing protrusions and the threshing grooves form a structure similar to a brush to mechanically strike and rub the crops.

[0058] The axial flow threshing device 1 further includes an axial flow threshing concave plate 14. The axial flow threshing concave plate 14 and the axial flow threshing pivot member 11 are arranged at a radial interval along the axial flow threshing pivot shaft 12. An axial flow conveying channel 15 is formed between the axial flow threshing concave plate 14 and the axial flow threshing pivot member 11. Threshing pores 143 are formed on the axial flow threshing concave plate 14.

[0059] Specifically, the crop flow enters the axial flow conveying channel 15 from the harvesting device. The axial flow threshing pivot member 11 rotates from the upstream side to the downstream side to drive the threshing bars 13 and threshing protrusions to thresh the crops in the axial flow conveying channel 15 and form a crop flow flowing from the axial flow threshing device 1 to the feeding device 2. The grains of some crops will be separated from the straws and enter the cleaning device of the agricultural machinery under the action of gravity through the threshing pores 143. The threshed crops, unthreshed crops, and grains that have not passed through the threshing pores 143 form a crop flow and flow through the axial flow conveying channel 15 to the feeding device 2.

[0060] Furthermore, the axial flow threshing concave plate 14 includes concave plate round steels 141 and a concave plate grid 142. A plurality of grid holes are formed on the concave plate grid 142 at longitudinal intervals. The number of the concave plate round steels 141 is multiple. The multiple concave plate round steels 141 are arranged at transverse intervals and the concave plate round steels 141 extend longitudinally to the ends of the concave plate grid 142 to divide the grid holes into threshing pores 143.

[0061] Among them, the size of the threshing pores 143 will directly affect the threshing effect and grain cleanliness. Therefore, the size of the threshing pores 143 on the axial flow threshing concave plate 14 needs to be set according to the variety of crops. In other words, for different varieties of crops, the axial flow threshing concave plate 14 with different sizes of threshing pores 143 needs to be replaced. For example, when harvesting wheat, the threshing pores 143 are generally designed to be between 200 mm and 260 mm in length and between 15 mm and 20 mm in width.

[0062] As Figure 2 shown, preferably, the axial flow threshing device 1 further includes a concave plate adjusting assembly 16. The concave plate adjusting assembly 16 is used to adjust the distance between the axial flow threshing pivot member 11 and the axial flow threshing concave plate 14, that is, the size of the axial flow conveying channel 15. The size of the axial flow conveying channel 15 will affect parameters such as the threshing effect, grain breakage rate, and straw passing speed. Therefore, during actual operation, it is necessary to adjust the size of the axial flow conveying channel 15 according to the variety of crops to balance parameters such as the threshing effect, grain breakage rate, and straw passing speed, so as to improve the practicability 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 through the concave plate adjusting assembly 16. The specific structure and adjustment method of the concave plate adjusting assembly 16 are well-known to those skilled in the art and do not belong to the core inventive point of this application, so they will not be elaborated here.

[0064] As Figure 4 shown, in some embodiments, the tangential flow threshing pivot member 11 is selected as a drum web. A plurality of weight-reducing holes are formed in the drum web. A plurality of drum webs are coaxially sleeved on the tangential flow threshing pivot shaft 12 and fixed to the tangential flow threshing pivot shaft 12 through web clamps. The plurality of drum webs are arranged at intervals along the axial direction of the tangential flow threshing pivot shaft 12. A plurality of mounting protrusions are formed on the drum web. The threshing rasp bars 13 are mounted on the mounting protrusions. The threshing protrusions are arranged on the side of the threshing rasp bars 13 facing away from the drum web.

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

[0066] As Figure 2 shown, the feeding device 2 further includes a feeding concave plate 24. The feeding concave plate 24 is arranged at an interval from the feeding pivot member 21, and a feeding conveying channel 25 is formed between the feeding concave plate 24 and the feeding pivot member 21. The feeding concave plate 24 is located on the downstream side of the tangential flow threshing concave plate 14. After the crops enter the feeding conveying channel 25 from the tangential flow conveying channel 15, they flow to the longitudinal axial flow threshing device 3 under the push of the feeding mounting plates 23.

[0067] As Figure 6 shown, preferably, the feeding device 2 further includes a feeding toothed plate 26. The feeding toothed plate 26 extends along the axial direction of the feeding pivot shaft 22 and is mounted on the feeding mounting plates 23. A toothed structure is formed on the edge of the feeding toothed plate 26 along the radial direction of the feeding pivot shaft 22 and facing away from the feeding pivot shaft 22 to mechanically strike and rub the crops, so as to complete the threshing of part of the crops, thereby 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 plates 23. The feeding toothed plate 26 is made of an elastic material such as rubber material to reduce the damage to the grains, thereby reducing the grain breakage rate.

[0069] As Figure 3As shown, preferably, a transition member 4 is provided between the feeding concave plate 24 and the tangential flow threshing concave plate 14 to cover the installation gap between the feeding concave plate 24 and the tangential flow threshing concave plate 14, so that the crop flow can smoothly flow from the feeding concave plate 24 to the feeding concave plate 24, thereby improving the smoothness of the crop flow and further improving the reliability of the threshing system 100.

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

[0071] As Figure 6 As shown, in some embodiments, feeding blades 27 are connected in alignment at the left and right ends of each feeding mounting plate 23, so as to form a lateral conveying channel between two adjacent feeding mounting plates 23. Crops can flow from the left and right ends to the middle of the feeding pivot member 21 through the lateral conveying channel. The feeding blades 27 make a spiral movement as the feeding pivot member 21 rotates to push the crops to flow from the left and right ends to the middle of the feeding pivot member 21 through the lateral conveying channel.

[0072] Specifically, since the longitudinal axial flow threshing pivot member 31 is arranged centrally 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 member 31, therefore, only by conveying the crops at the left and right ends of the feeding device 2 to the middle can the crop flow smoothly flow from the feeding device 2 to the longitudinal axial flow device, thereby improving the smoothness of the crop flow and further improving the reliability of the threshing system 100.

[0073] Preferably, the feeding blade 27 is of 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 member 21 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 member 21 is completely attached to and welded to the outer peripheral wall of the feeding pivot member 21, so that the feeding blade 27 can better convey the crops from the left and right ends to the middle.

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

[0075] As Figure 6As shown, in some embodiments, the feeding device 2 further includes a feeding partition 28. A plurality of feeding partitions 28 are arranged between each group of two adjacent feeding mounting plates 23. The plurality of feeding partitions 28 between two adjacent feeding mounting plates 23 in the same group are arranged at intervals along the axial direction of the feeding pivot shaft 22, and a circumferential conveying channel is formed between adjacent feeding partitions 28.

[0076] Specifically, the crop flow will move circumferentially along the feeding pivot shaft 22 under the action of the feeding mounting plate 23, and the crop flow will move axially along the feeding pivot shaft 22 under the action of the spiral blade. The confluence of the two crop flows on the feeding pivot member 21 will cause the crop flow to be disordered and unable to be smoothly conveyed to the longitudinal axial flow threshing device 3. The circumferential conveying channel formed by the feeding partition 28 is used to re-organize the crop flow, so that the disordered crop flow is re-divided into multiple crop flows that are conveyed to the longitudinal axial flow threshing device 3, thereby improving the smoothness of the crop flow and further improving the reliability of the threshing system 100.

[0077] As Figure 2 and Figure 7 As shown, in some embodiments, the longitudinal axial flow threshing device 3 includes a longitudinal axial flow cover 33 covering the outside of the longitudinal axial flow threshing pivot member 31. The end of the longitudinal axial flow cover 33 facing the feeding device 2 is formed with a flared structure. Since the longitudinal axial flow threshing pivot member 31 is arranged centrally 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 member 31, therefore, the crop flow that is initially gathered towards the middle under the action of the feeding device 2 still needs to be secondarily gathered by the flared structure of the longitudinal axial flow cover 33 so that the agricultural crop flow can flow towards the longitudinal axial flow threshing pivot member 31, thereby improving the smoothness of the crop flow and further improving the reliability of the threshing system 100.

[0078] Specifically, the longitudinal axial flow cover 33 includes an upper cover plate and a lower cover plate. The longitudinal axial flow threshing pivot member 31 and the longitudinal axial flow threshing pivot shaft 32 are located in the space enclosed by the upper cover plate and the lower cover plate. A longitudinal axial flow conveying channel 34 is formed between the longitudinal axial flow threshing pivot member 31 and the lower cover plate. The feeding concave plate 24 is overlapped with the lower cover plate so that the crop flow 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 crop flow and further improving the reliability of the threshing system 100.

[0079] As Figure 2 and Figure 7 As shown, in some embodiments, the longitudinal axial flow threshing pivot member 31 includes a feeding section, a threshing section, a separating section, and a discharging section that are coaxially connected along the axial direction of the longitudinal axial flow threshing pivot shaft 32. Among them, the feeding section is in a frustum shape, the threshing section, the separating section, and the discharging 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 in the flared structure of the longitudinal axial flow cover 33.

[0080] Specifically, a plurality of inlet vanes 35 are provided on the feeding section. The inlet vanes 35 are of a spiral structure. The inlet vanes 35 perform a spiral motion as the feeding section rotates to push the working fluid to move backward; the threshing elements on the threshing section are threshing blocks 36, and the threshing blocks 36 are mainly used for threshing treatment; the threshing elements on the separation section are separation tooth blocks 37, and the separation tooth blocks 37 are mainly used for separating the threshed grains and straws; a plurality of outlet vanes 38 are provided on the discharging section. The outlet vanes 38 perform a spiral motion as the discharging section rotates to push the working fluid out of the longitudinal axial flow cover 33.

[0081] Correspondingly, a plurality of spiral guide strips 331 are provided on the inner peripheral wall of the upper cover plate. After the crops are pushed from the feeding section to the threshing section and the separation section by the inlet vanes 35, the threshing blocks 36 on the threshing section and the separation tooth blocks 37 on the separation section do not have the ability to push the crops backward. The spiral guide strips 331 perform a spiral motion relative to the longitudinal axial flow threshing pivot 31 during the rotation of the longitudinal axial flow threshing pivot 31 to push the working fluid to move backward; a threshing pore 143 is formed on the lower cover plate, and the range where the threshing pore 143 is formed needs to at least completely cover the threshing section and the separation section so that the grains separated by the threshing blocks 36 and the separation tooth blocks 37 can fall into the cleaning device through the threshing pore 143; a discharge port 332 is formed at the rear end of the lower cover plate, and the discharge port 332 corresponds to the position of the discharging section so that the outlet vanes 38 push the working fluid to flow out of the longitudinal axial flow cover 33 through the discharge port 332.

[0082] It should be noted that the shapes of the inlet vanes 35, the outlet vanes 38, the threshing blocks 36, the separation tooth blocks 37 and the spiral guide strips 331 are well-known to those skilled in the art and do not belong to the core inventive points of this application, so they will not be elaborated here.

[0083] As Figure 1 and Figure 2 shown, in some embodiments, the threshing system 100 further includes a first continuously variable speed assembly 5 and a second continuously variable speed assembly 6.

[0084] Specifically, the first continuously variable speed assembly 5 includes a first driving member, a first continuously variable driving wheel, a feeding driven wheel and a tangential flow driven wheel. The first driving member is drivingly connected to the first continuously variable driving wheel, the first continuously variable driving wheel is in transmission connection with the feeding driven wheel, the feeding driven wheel is in transmission connection with the tangential flow driven wheel, the feeding driven wheel is drivingly connected to the input end of the feeding device 2, and the tangential flow driven wheel is drivingly connected to the tangential flow threshing pivot shaft 12. The speed adjustment of the feeding device 2 and the tangential flow threshing device 1 is realized through the first continuously variable speed assembly 5, so that the speed of the threshing system 100 can be continuously adjusted according to the actual operation conditions and the crop varieties, thereby improving the practicability of the threshing system 100.

[0085] The second stepless speed change assembly 6 includes a second driving member, a second stepless driving wheel, a longitudinal axial flow driven wheel, and a longitudinal axial flow reversing box 61. The second driving member is drivingly connected to the second stepless driving wheel, the second stepless driving wheel is drivingly connected to the longitudinal axial flow driven wheel, the longitudinal axial flow driven wheel is drivingly 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 drivingly connected to the longitudinal axial flow threshing pivot shaft 32. The speed adjustment of the longitudinal axial flow threshing device 3 is realized by the second stepless speed change assembly 6, so that the speed of the threshing system 100 can be steplessly adjusted according to the actual operation conditions and crop varieties, thereby improving the practicality of the threshing system 100.

[0086] It should be noted that the first driving member and the second driving member can be active rotating shafts driven by a motor or an engine. The structure and principle of the stepless speed change and the structure and principle of the longitudinal axial flow reversing box 61 are well known to technical personnel in this field and do not belong to the core invention of this application and will not be elaborated here.

[0087] like Figure 1 and Figure 2 As shown, in the present application, first, the crops enter the threshing system 100 from the harvesting device, and secondly, the crops pass through the tangential flow conveying channel 15 under the action of the tangential flow threshing device 1, and the threshing bar 13 performs the first threshing process, and then, the crops pass through the feeding conveying channel 25 under the action of the feeding device 2, and the feeding tooth plate 26 performs the second threshing process, and then, the crops pass through the longitudinal axial flow conveying channel 34 under the action of the longitudinal axial flow threshing device 3, and the threshing block 36 performs the third threshing process and the separation tooth block 37 performs the fourth threshing process, and finally, the threshed straw flows out from the discharge port 332. In the whole process, the crops are threshed four times, and the threshing effect of the threshing system 100 on the crops is significantly improved.

[0088] In addition, by providing the feeding device 2 and the trumpet-mouth structure of the longitudinal flow cover 33, a smooth transition of the crop from the shear flow threshing device 1 to the longitudinal flow threshing device 3 is achieved, so that the threshing system 100 can combine the advantages of the transverse flow threshing technology and the single longitudinal 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 crop flow direction of the entire process is shown by the arrows in the accompanying drawings of the specification. The crops mentioned in this application may be wheat, corn, rice, etc., and the agricultural machinery mentioned in this application may be a wheat harvester, a rice harvester or a combine harvester.

[0090] The specific embodiment of the present application provides an agricultural machine, including a threshing system 100, a harvesting device and a cleaning device. Since the agricultural machine adopts all embodiments of the threshing system 100, the agricultural machine has all the beneficial effects brought by the threshing system 100.

[0091] It should be noted that the structures and principles of the harvesting device and the cleaning device are well-known to those skilled in the art and do not belong to the core inventive points of this application, so they will not be elaborated here.

[0092] In the description of this application, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of this application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0093] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or capable of communicating with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

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

[0095] Although the embodiments of this application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting this application. Those of ordinary skill 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 for an agricultural machine, characterized in that, The threshing system (100) includes: A tangential flow threshing device (1), the tangential flow threshing device (1) being located on the downstream side of the harvesting device of the agricultural machinery. The tangential flow threshing device (1) includes a tangential flow threshing pivot member (11) and a tangential flow threshing pivot shaft (12), and the tangential flow threshing pivot member (11) performs a rotational movement around the tangential flow threshing pivot shaft (12); An axial flow threshing device (3), the axial flow threshing device (3) being located on the downstream side of the tangential flow threshing device (1). The axial flow threshing device (3) includes an axial flow threshing pivot member (31) and an axial flow threshing pivot shaft (32), and the axial flow threshing pivot member (31) performs a rotational movement around the axial flow threshing pivot shaft (32); A feeding device (2), the feeding device (2) being located on the downstream side of the tangential flow threshing device (1) and on the upstream side of the axial flow threshing device (3). The feeding device (2) is used to convey the crop flow from the tangential flow threshing device (1) to the axial flow threshing device (3).

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

3. The threshing system of the agricultural machinery according to claim 2, wherein The feeding device (2) includes a feeding pivot member (21) and a feeding pivot shaft (22), the feeding pivot member (21) performing a rotational movement 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 axial flow threshing pivot shaft (32).

4. The threshing system of the agricultural machinery according to claim 3, wherein, The projection of the axis of the axial flow threshing pivot shaft (32) in the plane where the axis of the tangential flow threshing pivot shaft (12) is located passes through the midpoint of the tangential flow threshing pivot shaft (12); The projection of the axis of the axial flow threshing pivot shaft (32) in the plane where the axis of the feeding pivot shaft (22) is located passes through the midpoint of the axis of the feeding pivot shaft (22).

5. The threshing system of the agricultural machinery according to claim 4, characterized in that, The feeding device (2) includes: Feeding mounting plates (23), the number of the feeding mounting plates (23) being multiple, and the multiple feeding mounting plates (23) being arranged at intervals in the circumferential direction of the feeding pivot shaft (22) on the feeding pivot member (21). The feeding mounting plates (23) extend along the axial direction of the feeding pivot shaft (22); Feeding vanes (27), the feeding vanes (27) being of a spiral structure. The feeding vanes (27) are connected to the axial ends of the feeding mounting plates (23) and extend to the axial end of the feeding pivot member (21) on the same side as the axial ends of the feeding mounting plates (23); Feeding partitions (28), the number of the feeding partitions (28) being multiple, and the multiple feeding partitions (28) being arranged at intervals in the axial direction of the feeding pivot shaft (22) between two adjacent feeding mounting plates (23).

6. The threshing system of the agricultural machinery according to claim 5, characterized in that, The feeding device (2) further includes a feeding tooth plate (26), the feeding tooth plate (26) extends along the axial direction of the feeding pivot shaft (22) and is installed on the feeding mounting plate (23), and a tooth-like structure is formed on the edge of the feeding tooth plate (26) that deviates from the feeding pivot shaft (22) along the radial direction of the feeding pivot shaft (22).

7. The threshing system of the agricultural machinery according to any one of claims 1 to 6, characterized in that, The axial-flow threshing device (1) further includes: an axial-flow threshing concave plate (14), the axial-flow threshing concave plate (14) is arranged at a radial interval from the axial-flow threshing pivot member (11) along the axial-flow threshing pivot shaft (12), and threshing pores (143) are formed on the axial-flow threshing concave plate (14); and, a concave plate adjusting assembly (16) for adjusting the distance between the axial-flow threshing pivot member (11) and the axial-flow threshing concave plate (14).

8. The threshing system of the agricultural machinery according to any one of claims 1 to 6, characterized in that The axial-flow threshing device (1) further includes a plurality of threshing rasp bars (13) installed on the axial-flow threshing pivot member (11), the plurality of threshing rasp bars (13) are arranged at circumferential intervals along the axial-flow threshing pivot shaft (12), the threshing rasp bars (13) extend along the axial direction of the axial-flow threshing pivot shaft (12) and are formed with a plurality of threshing protrusions arranged at axial intervals along the axial-flow threshing pivot shaft (12).

9. The threshing system of the agricultural machinery according to any one of claims 1 to 6, characterized in that, An inlet vane (35), a threshing element, and an outlet vane (38) are sequentially installed on the axial-flow threshing pivot member (31) along the axial direction of the axial-flow threshing pivot shaft (32).

10. The threshing system of the agricultural machinery according to any one of claims 1 to 6, characterized in that The axial-flow threshing device (3) includes an axial-flow cover (33) covering the outside of the axial-flow threshing pivot member (31), and a flared structure is formed at the end of the axial-flow cover (33) facing the feeding device (2).

11. The threshing system of the agricultural machinery according to any one of claims 1 to 6, characterized in that, The threshing system (100) further includes: a first continuously variable transmission assembly (5), the first continuously variable transmission assembly (5) includes a first driving member, a first continuously variable driving pulley, a feeding driven pulley, and an axial-flow driven pulley, the first driving member is drivingly connected to the first continuously variable driving pulley, the first continuously variable driving pulley is drivingly connected to the feeding driven pulley, the feeding driven pulley is drivingly connected to the axial-flow driven pulley, the feeding driven pulley is drivingly connected to the input end of the feeding device (2), and the axial-flow driven pulley is drivingly connected to the axial-flow threshing pivot shaft (12); and / or, a second continuously variable transmission assembly (6), the second continuously variable transmission assembly (6) includes a second driving member, a second continuously variable driving pulley, an axial-flow driven pulley, and an axial-flow reversing box (61), the second driving member is drivingly connected to the second continuously variable driving pulley, the second continuously variable driving pulley is drivingly connected to the axial-flow driven pulley, the axial-flow driven pulley is drivingly connected to the input end of the axial-flow reversing box (61), and the output end of the axial-flow reversing box (61) is drivingly connected to the axial-flow threshing pivot shaft (32).

12. An agricultural machine, characterized in that, A threshing system (100) including the agricultural machinery according to any one of claims 1 to 11.

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