Threshing device suitable for small longitudinal axial flow harvester

Abstract

The utility model relates to the technical field of agricultural machinery, and discloses a threshing device suitable for a small-sized longitudinal axial flow harvester, which comprises a feeding auger, a threshing assembly, a transmission part and a fixing plate, the feeding auger is fixedly connected with the threshing assembly, the transmission part is used for rotating the threshing assembly, the threshing assembly consists of a high-speed threshing section and a low-speed threshing section, the rotating shaft of the low-speed threshing section is a solid shaft, the rotating shaft of the high-speed threshing section is a hollow shaft, the solid shaft penetrates through the hollow shaft, the feeding auger is fixed to the solid shaft, the solid shaft and the hollow shaft are rotationally connected through a bearing A, the fixing plate and the solid shaft are rotationally connected through a bearing A, and the transmission part is used for driving the solid shaft and the hollow shaft to rotate at the same time. The threshing device has the advantages that the high-speed threshing section and the low-speed threshing section are longitudinally distributed along the same straight line through the solid shaft and the hollow shaft, meanwhile, the solid shaft and the hollow shaft rotate at the same time under the action of the driving part, and the threshing device is simple and compact in structure and suitable for a small longitudinal axial flow harvester.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, in particular to a threshing device suitable for a small longitudinal axial flow harvester. Background Art

[0002] The performance of harvesting equipment depends largely on the threshing device. The threshing device mainly includes a threshing drum and a concave screen. When working, the threshing drum rotates at high speed and contacts the crops. By hitting, the grains are peeled off the straw; the concave screen is used to screen the straw and other impurities of different sizes from the grains, separate them from the grains, and finally achieve the threshing effect. When the harvester is in normal working condition, the higher the speed of the threshing drum and the smaller the gap between the concave plates, the higher the threshing rate of the machine, but the degree of grain crushing will increase, which will have an adverse effect on the normal operation of the machine; if the gap between the concave plate and the drum is increased and the speed of the drum is reduced, the crushing rate of the machine will decrease accordingly, but the threshing rate may not be guaranteed. The threshing device of the traditional harvester has only one speed state. When threshing crops with uneven maturity, the speed is often increased to reduce losses, but the breakage rate increases and the power consumption increases.

[0003] Chinese invention patent (authorization announcement number: CN113207446B name: a differential threshing drum and its threshing system), the power of the two rollers of the differential threshing drum is input on non-colateral sides, compared with the existing differential threshing drum that uses gear transmission and inputs power on the same side, it solves the problem that the speed ratio of the front and rear rollers of the existing differential threshing drum cannot be adjusted, but it is driven by multiple pulleys, the structure is complex, and it is not suitable for use in small harvesters. Utility Model Content

[0004] The utility model aims to provide a threshing device suitable for a small longitudinal axial flow harvester to overcome the shortcomings of the prior art.

[0005] The purpose of the utility model is achieved through the following technical solutions: A threshing device suitable for a small longitudinal axial flow harvester, comprising a feeding auger, a threshing assembly, a transmission member and a fixed plate, wherein the feeding auger and the transmission member are respectively located at the two ends of the threshing assembly, the feeding auger is fixedly connected to the threshing assembly, the transmission member is used to rotate the threshing assembly, the feeding auger and the fixed plate are rotatably connected through the threshing assembly, the threshing assembly consists of a high-speed threshing section and a low-speed threshing section, the rotating shaft of the low-speed threshing section is a solid shaft, the rotating shaft of the high-speed threshing section is a hollow shaft, the solid shaft passes through the hollow shaft, the feeding auger is fixed on the solid shaft, the solid shaft and the hollow shaft, the fixed plate and the solid shaft are rotatably connected through A bearings, and the transmission member is used to simultaneously drive the solid shaft and the hollow shaft to rotate.

[0006] Preferably, the transmission member includes a housing, a stator, a high-speed rotor and a low-speed rotor. The housing and the high-speed rotor are rotatably connected via a B bearing. The stator is fixed in the housing in a ring shape by M pairs of permanent magnets. The high-speed rotor is fixed on the hollow shaft in a ring shape by N pairs of permanent magnets. The low-speed rotor is fixed on the solid shaft in a gear shape by T magnetizers. The stator is sleeved on the high-speed rotor, and the high-speed rotor is sleeved on the low-speed rotor.

[0007] Preferably, the low-speed threshing section includes a low-speed section radiation wheel, a low-speed section intermediate radiation wheel and a low-speed section gear shaft, and the low-speed section radiation wheel, the low-speed section intermediate radiation wheel and the feeding augers are fixed on the solid shaft in sequence, and there are a plurality of low-speed section gear shafts, and the low-speed section gear shafts are evenly distributed on the solid shaft in a cage shape through the low-speed section radiation wheel, the low-speed section intermediate radiation wheel and the feeding augers, and each of the low-speed section gear shafts is evenly distributed with a plurality of low-speed section threshing teeth.

[0008] Preferably, the high-speed threshing section includes a high-speed section radiation wheel, a high-speed section intermediate radiation wheel, a high-speed section gear shaft and a high-speed section separation radiation wheel, the high-speed section radiation wheel, the high-speed section intermediate radiation wheel and the high-speed section separation radiation wheel are fixed on the hollow shaft in sequence, there are a plurality of high-speed section gear shafts, and the high-speed section gear shafts are evenly distributed on the solid shaft in a cage shape through the high-speed section radiation wheel, the high-speed section intermediate radiation wheel and the high-speed section separation radiation wheel, and each of the high-speed section gear shafts is evenly distributed with a plurality of high-speed section threshing teeth.

[0009] Preferably, a concave plate screen is provided below the threshing assembly, and the concave plate screen extends from the feed auger to the transmission member.

[0010] Preferably, the value of T is equal to the value of M plus the value of N.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The high-speed threshing section and the low-speed threshing section are longitudinally distributed along the same straight line through the solid shaft and the hollow shaft. At the same time, the solid shaft and the hollow shaft are rotated simultaneously under the action of the driving member. The structure is simple and compact, and is suitable for small longitudinal axis flow harvesters. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 The utility model is a cross-sectional view Figure 1 ;

[0015] Figure 3The utility model is a cross-sectional view Figure 2 ;

[0016] Figure 4 for Figure 3 A partial enlarged schematic diagram of point B in the middle;

[0017] Figure 5 for Figure 2 A local enlarged schematic diagram of the middle A;

[0018] In the figure, 1-feeding auger, 2-fixed plate, 3-solid shaft, 4-hollow shaft, 5-A bearing, 6-housing, 7-stator, 8-high-speed rotor, 9-low-speed rotor, 10-B bearing, 11-low-speed section radiation wheel, 12-low-speed section middle radiation wheel, 13-low-speed section gear shaft, 14-low-speed section threshing tooth, 15-high-speed section radiation wheel, 16-high-speed section middle radiation wheel, 17-high-speed section gear shaft, 18-high-speed section separation radiation wheel, 19-high-speed section threshing tooth, 20-concave screen. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention for which protection is sought, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features thereof may be combined with each other.

[0022] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0023] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] like Figure 1-4 As shown, a threshing device suitable for a small longitudinal axial flow harvester includes a feed auger 1, a threshing assembly, a transmission member and a fixed plate 2. The feed auger 1 and the transmission member are respectively located at the two ends of the threshing assembly, the feed auger 1 is fixedly connected to the threshing assembly, the transmission member is used to rotate the threshing assembly, the feed auger 1 is rotatably connected to the fixed plate 2 through the threshing assembly, the fixed plate 2 is fixed in the threshing cabin, the transmission member is fixed outside the threshing cabin (not shown in the threshing cabin figure), the threshing assembly consists of a high-speed threshing section and a low-speed threshing section, and the rotating shaft of the low-speed threshing section is solid Shaft 3, the rotating shaft of the high-speed threshing section is a hollow shaft 4, the solid shaft 3 passes through the hollow shaft 4, the feed auger 1 is fixed on the solid shaft 3, the solid shaft 3 and the hollow shaft 4, the fixed plate 2 and the solid shaft 3 are all rotatably connected through the A bearing 5, the transmission member is used to simultaneously drive the solid shaft 3 and the hollow shaft 4 to rotate, through the solid shaft 3 and the hollow shaft 4, the high-speed threshing section and the low-speed threshing section are longitudinally distributed along the same straight line, and at the same time, the solid shaft 3 and the hollow shaft 4 are rotated at the same time under the action of the driving member. The structure is simple and compact, and is suitable for small longitudinal axis flow harvesters.

[0026] In this embodiment, if Figure 1 and 5As shown, the transmission member includes a housing 6, a stator 7, a high-speed rotor 8 and a low-speed rotor 9. The housing 6 and the high-speed rotor 8 are rotatably connected via a B bearing 10. The stator 7 is fixed in the housing 6 in an annular shape by M pairs of permanent magnets. The high-speed rotor 8 is fixed on the hollow shaft 4 in an annular shape by N pairs of permanent magnets. The low-speed rotor 9 is fixed on the solid shaft 3 in a gear shape by T magnetizers. The stator 7 is sleeved on the high-speed rotor 8, and the high-speed rotor 8 is sleeved on the low-speed rotor 9. M, N, and T are all integers greater than one. The gear-shaped low-speed rotor 9 drives the low-speed threshing section to rotate, and the annular high-speed rotor 8 drives the high-speed threshing section to rotate, forming a non-contact magnetic transmission with strong flexibility, which effectively avoids the high-speed or low-speed threshing section from being blocked and damaging the driving member.

[0027] In this embodiment, if Figure 1-4 As shown, the low-speed threshing section includes a low-speed section radial wheel 11, a low-speed section intermediate radial wheel 12 and a low-speed section gear shaft 13. The low-speed section radial wheel 11, the low-speed section intermediate radial wheel 12 and the feeding auger 1 are fixed on the solid shaft 3 in sequence. There are a plurality of low-speed section gear shafts 13. The low-speed section gear shafts 13 are evenly distributed on the solid shaft 3 in a cage shape through the low-speed section radial wheel 11, the low-speed section intermediate radial wheel 12 and the feeding auger 1. A plurality of low-speed section threshing teeth 14 are evenly distributed on each low-speed section gear shaft 13. The high-speed threshing section includes a high-speed section radial wheel 15, high-speed section middle radiation wheel 16, high-speed section gear shaft 17 and high-speed section separation radiation wheel 18, the high-speed section radiation wheel 15, the high-speed section middle radiation wheel 16 and the high-speed section separation radiation wheel 18 are fixed on the hollow shaft 4 in sequence, there are a plurality of high-speed section gear shafts 17, and the high-speed section gear shafts 17 are evenly distributed on the solid shaft 3 in a cage shape through the high-speed section radiation wheel 15, the high-speed section middle radiation wheel 16 and the high-speed section separation radiation wheel 18, and each high-speed section gear shaft 17 is evenly distributed with a plurality of high-speed section threshing teeth 19, and the structure is firm and the operation is stable.

[0028] In this embodiment, if Figure 1 As shown, a concave plate screen 20 is arranged below the threshing assembly, and the concave plate screen 20 extends from the feed auger 1 to the transmission member. During the harvesting process, the crops first pass through the low-speed threshing area for coarse threshing, and the unthreshed grains enter the high-speed threshing area for fine threshing, and the grains are separated from the stems by the concave plate screen 20 to avoid subsequent screening and improve work efficiency.

[0029] In this embodiment, if Figure 1 and 5 As shown, the value of T is equal to the value of M plus the value of N, so that the ratio of high speed to low speed is optimized during the working process to avoid excessive difference between high speed and low speed, which will reduce the threshing effect.

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A threshing device suitable for a small longitudinal axial flow harvester, comprising a feed auger (1), a threshing assembly, a transmission member and a fixed plate (2), wherein the feed auger (1) and the transmission member are respectively located at two ends of the threshing assembly, the feed auger (1) is fixedly connected to the threshing assembly, the transmission member is used to rotate the threshing assembly, the feed auger (1) and the fixed plate (2) are rotatably connected via the threshing assembly, and characterized in that: The threshing assembly is composed of a high-speed threshing section and a low-speed threshing section. The rotating shaft of the low-speed threshing section is a solid shaft (3), and the rotating shaft of the high-speed threshing section is a hollow shaft (4). The solid shaft (3) passes through the hollow shaft (4). The feeding agitator (1) is fixed on the solid shaft (3). The solid shaft (3) and the hollow shaft (4) and the fixed plate (2) and the solid shaft (3) are rotatably connected via an A bearing (5). The transmission member is used to simultaneously drive the solid shaft (3) and the hollow shaft (4) to rotate.

2. A threshing device suitable for a small longitudinal axial flow harvester according to claim 1, characterized in that: The transmission member comprises a housing (6), a stator (7), a high-speed rotor (8) and a low-speed rotor (9); the housing (6) and the high-speed rotor (8) are rotatably connected via a B bearing (10); the stator (7) is fixed in the housing (6) in an annular shape by M pairs of permanent magnets; the high-speed rotor (8) is fixed in an annular shape on the hollow shaft (4) by N pairs of permanent magnets; the low-speed rotor (9) is fixed in a gear shape on the solid shaft (3) by T magnetizers; the stator (7) is sleeved on the high-speed rotor (8), and the high-speed rotor (8) is sleeved on the low-speed rotor (9).

3. A threshing device suitable for a small longitudinal axial flow harvester according to claim 1, characterized in that: The low-speed threshing section comprises a low-speed section radial wheel (11), a low-speed section intermediate radial wheel (12) and a low-speed section gear shaft (13); the low-speed section radial wheel (11), the low-speed section intermediate radial wheel (12) and the feeding augers (1) are fixed on the solid shaft (3) in sequence; there are a plurality of low-speed section gear shafts (13); the low-speed section gear shafts (13) are evenly distributed on the solid shaft (3) in a cage shape through the low-speed section radial wheel (11), the low-speed section intermediate radial wheel (12) and the feeding augers (1); and each of the low-speed section gear shafts (13) is evenly distributed with a plurality of low-speed section threshing teeth (14).

4. A threshing device suitable for a small longitudinal axial flow harvester according to claim 1, characterized in that: The high-speed threshing section comprises a high-speed section radial wheel (15), a high-speed section intermediate radial wheel (16), a high-speed section gear shaft (17) and a high-speed section separating radial wheel (18). The high-speed section radial wheel (15), the high-speed section intermediate radial wheel (16) and the high-speed section separating radial wheel (18) are fixed on the hollow shaft (4) in sequence. There are a plurality of high-speed section gear shafts (17). The high-speed section gear shafts (17) are evenly distributed on the solid shaft (3) in a cage shape through the high-speed section radial wheel (15), the high-speed section intermediate radial wheel (16) and the high-speed section separating radial wheel (18). A plurality of high-speed section threshing teeth (19) are evenly distributed on each of the high-speed section gear shafts (17).

5. A threshing device suitable for a small longitudinal axial flow harvester according to claim 1, characterized in that: A concave plate screen (20) is arranged below the threshing assembly, and the concave plate screen (20) extends from the feeding auger (1) to the transmission member.

6. A threshing device suitable for a small longitudinal axial flow harvester according to claim 2, characterized in that: The value of T is equal to the value of M plus the value of N.

Images