Sectional two-way rotating cylinder of millet harvester

Abstract

The invention provides a segmented bidirectional rotating threshing cylinder of a millet harvester, solves the problems of insufficient threshing and excessive grain in the prior art, and improves the threshing and separating capacity and efficiency of the threshing operation. The segmented bidirectional rotating threshing cylinder of the millet harvester comprises a circular cavity surrounded by an upper and lower guide cover and a concave plate screen; a plurality of cylinder assemblies are arranged side by side in the circular cavity, the directions of rotation of adjacent two cylinder assemblies are opposite, the rotation center of the cylinder assembly coincides with the central axis of the circular cavity; a feeding assembly is arranged at one end of the circular cavity, and the material sequentially passes through all the cylinder assemblies in the circular cavity. Overall, the segmented bidirectional rotating threshing cylinder of the millet harvester has the advantages of simple structure, convenient use, improved threshing and separating capacity during operation, and the problems of insufficient threshing and excessive grain during harvesting operation are solved, and has good practicability.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of grain harvesting equipment of agricultural machinery, in particular to a sectional bidirectional rotating threshing cylinder of a millet harvester. BACKGROUND

[0002] Millet is an ancient crop originated from China, belonging to the genus Setaria of the family Poaceae, and is still the main crop of dry farming, and is also a strategic reserve crop for responding to climate change and drought environment. After peeling, millet is also called millet, which is one of the important staple foods in the daily life of ancient Chinese people. It has four important functions of tonifying qi and spleen, tonifying blood, strengthening sinews and bones, and enhancing resistance, and can also improve appetite. Millet is also a kind of coarse grain that is very popular among the people in the vast northern region of China.

[0003] With the improvement of people's material living standard in China, the demand for millet as a kind of healthy and nutritious food is increasing. However, the domestic millet harvesting has long relied on manual work, and the mechanized harvesting has not been popularized. The planting area of millet is relatively wide, and there are many varieties of millet. The growth of different varieties of millet is different, some varieties have more stalks and are not easy to thresh, and some varieties have less stalks and are easy to thresh. At present, the performance and adaptability of the supporting agricultural implements for millet production in China are poor, the threshing loss rate is large, and the millet harvester is mostly modified from a wheat and rice harvester. Therefore, we are constantly improving and perfecting the millet threshing mechanism. The threshing device is the core part of the threshing machine and the combined harvester for grains. It not only determines the threshing quality of the machine to a great extent, but also has a great influence on separation and cleaning. Therefore, it is necessary to design a sectional bidirectional rotating threshing cylinder of a millet harvester to solve the above problems. SUMMARY

[0004] The present application provides a sectional bidirectional rotating threshing cylinder of a millet harvester, which solves the problems of insufficient threshing and too many chaffs in the prior art, and improves the threshing separation capacity and efficiency.

[0005] The technical scheme of the present application is as follows: the sectional bidirectional rotating threshing cylinder of the millet harvester comprises:

[0006] a circular cavity surrounded by the upper and lower guide covers and the concave screen;

[0007] a plurality of cylinder assemblies arranged side by side in the circular cavity, the rotation directions of adjacent two cylinder assemblies are opposite, and the rotation centers of the cylinder assemblies coincide with the central axis of the circular cavity;

[0008] one end of the circular cavity is provided with a feeding assembly, and the material passes through all the cylinder assemblies in the circular cavity in sequence.

[0009] As a preferred embodiment, the number of the roller assemblies is four, the front two roller assemblies are provided with a plurality of grooved rods arranged in a circumferential direction, and the rear two roller assemblies are provided with a plurality of nail teeth arranged in a circumferential direction, and the feeding assembly is fixedly connected to the frontmost roller assembly.

[0010] As a preferred embodiment, the center of the circular cavity is provided with a fixed central shaft, each roller assembly comprises

[0011] a central cylinder which is sleeved on the central shaft and can rotate freely;

[0012] two auxiliary discs which are fixed to the two ends of the central cylinder, and the outer edge of the auxiliary disc is provided with a plurality of tooth rod clamping grooves arranged in a circumferential direction;

[0013] a plurality of tooth rods, the two ends of the tooth rod are embedded in the corresponding tooth rod clamping grooves of the two auxiliary discs and are fixed thereto, and the tooth rods are arranged uniformly in a circumferential direction;

[0014] the grooved rods are fixed to the tooth rods by grooved rod fixing plates;

[0015] the nail teeth are directly fixed to the tooth rods.

[0016] As a preferred embodiment, a plurality of threaded holes are arranged in a circumferential direction on the auxiliary disc, the two ends of the tooth rod are fixed with tooth rod fixing plates, and the tooth rod fixing plates are fixed to the threaded holes by bolts;

[0017] the number of the grooved rod fixing plates on each tooth rod is three, the three grooved rod fixing plates are arranged equidistantly in the length direction of the tooth rod, the cross section of the grooved rod is in a "V" shape, the opening of the "V" shape faces the tooth rod, the grooved rod fixing plate extends towards the outer circumferential direction of the roller assembly, and the grooved rod is fixed to the end of the corresponding three grooved rod fixing plates;

[0018] the number of the nail teeth on each tooth rod is several, and the nail teeth are arranged equidistantly in the length direction of the tooth rod, the shape of the nail teeth is in a strip shape, and the nail teeth extend towards the outer circumferential direction of the roller assembly.

[0019] As a preferred embodiment, a shaft sleeve assembly for transmitting power is arranged between two adjacent roller assemblies, each shaft sleeve assembly comprises

[0020] a shaft sleeve which is fixed to the central shaft;

[0021] two small bevel gear shafts which are symmetrically arranged in the shaft sleeve, and the extension direction of the small bevel gear shaft is perpendicular to the central shaft;

[0022] two small bevel gears which are respectively rotatably installed on the small bevel gear shafts;

[0023] Two bevel gears are symmetrically arranged on both sides of the shaft sleeve, and are engaged with two small bevel gears, the large bevel gear is sleeved on the central shaft and synchronously rotates with the corresponding central cylinder.

[0024] As a preferred embodiment, the small bevel gear shaft is further provided with a gasket for preventing axial movement of the small bevel gear.

[0025] As a preferred embodiment, the feeding assembly comprises a conical cylinder, the smaller end of which is fixed with a belt pulley, and the larger end is fixed on the auxiliary disc of the first roller assembly, the outer surface of the conical cylinder is fixed with two helical feeding blades, and the belt pulley is connected with the motor for driving the rotation of the feeding assembly and all roller assemblies.

[0026] As a preferred embodiment, the inner wall of the flow guide cover is provided with a guide plate corresponding to the roller assembly, and the guide angle formed by the guide plate gradually increases along the movement direction of the material.

[0027] The screen hole size of the concave screen corresponding to the rib is 16*6mm or 10*6mm, and the screen hole size of the concave screen corresponding to the tines is 32*6mm.

[0028] As a preferred embodiment, the flow guide cover and the concave screen are arranged on the support frame.

[0029] The two ends of the central shaft are supported on the support frame and fixed as a whole.

[0030] As a preferred embodiment, the central cylinder is provided with a torque sensor, and the torque sensor is electrically connected between the motor for sending a signal to the motor.

[0031] After the above technical scheme is adopted, the beneficial effects of the present application are as follows: the flow guide cover and the concave screen form a circular cavity, the material is fed into the circular cavity by the feeding assembly, the material is gradually pushed forward under the action of the plurality of roller assemblies in the circular cavity, the turning directions of the adjacent two roller assemblies are opposite, different forces are generated on the material in different directions, the threshing and separating effects are improved, and the problems of insufficient threshing and excessive grain during harvesting operation are solved.

[0032] The number of roller assemblies is four, the front two are arranged in the circumferential direction, and the rear two are arranged in the circumferential direction, the friction between the rib and the concave screen matched outside is used to realize rubbing, brushing and breaking of the grain, the rib is used to realize sufficient threshing of the grain through rubbing and breaking, and the grain code is effectively reduced, the tines are used to thresh the grain again through brushing and impact after threshing by the rib, and the grain is separated into the cleaning mechanism.

[0033] The application can transmit power to the first roller assembly by fixing the larger end of the feeding assembly cone barrel with the auxiliary disc of the first roller assembly and rotating the pulley of the smaller end of the cone barrel by the motor, and can ensure that the directions of the two adjacent roller assemblies are opposite by using the shaft sleeve assembly arranged between the adjacent roller assemblies.

[0034] Four groups of guide plates with different directions are arranged on the inner wall of the guide cover corresponding to the positions of the four roller assemblies, the arrangement of the guide angles of the guide plates is designed with a parameter gradient according to different functions, and the guide angles of the guide plates gradually increase from the front end to the rear end. The front end is the main threshing area, the guide angle is relatively small, the axial movement speed of the crops is slow, the threshing element acts more fully, and the rear end guide angle is relatively large, which accelerates the axial movement speed of the materials to achieve the anti-blocking effect. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0036] Figure 1 The structural schematic diagram of one embodiment of the present application is shown in the figure.

[0037] Figure 2 The structural schematic diagram of the feeding assembly and the roller assembly is shown in the figure.

[0038] Figure 3 The three-dimensional structural schematic diagram of the feeding assembly and the first roller assembly is shown in the figure.

[0039] Figure 4 The front view schematic diagram of the structure shown in the figure is shown in the figure. Figure 3

[0040] Figure 5 The right view schematic diagram of the structure shown in the figure is shown in the figure. Figure 4

[0041] Figure 6 The three-dimensional structural schematic diagram of the second roller assembly is shown in the figure.

[0042] Figure 7 The front view schematic diagram of the structure shown in the figure is shown in the figure. Figure 6

[0043] Figure 8 The right view schematic diagram of the structure shown in the figure is shown in the figure. Figure 7

[0044] Figure 9 ​​​​Fig. 3 is a perspective view of the third roller assembly;

[0045] Figure 10 Fig. 4 is a front view of the structure shown in Fig. 3; Figure 9

[0046] Figure 11 Fig. 5 is a right view of the structure shown in Fig. 4; Figure 10

[0047] Figure 12 Fig. 6 is a perspective view of the fourth roller assembly;

[0048] Figure 13 Fig. 7 is a front view of the structure shown in Fig. 6; Figure 12

[0049] Figure 14 Fig. 8 is a left view of the structure shown in Fig. 7; Figure 13

[0050] Fig. 9 is a perspective view of the shaft sleeve; Figure 15

[0051] Fig. 10 is a front view of the structure shown in Fig. 9; Figure 16 Figure 15 Fig. 11 is a partial enlarged view of I in Fig. 10;

[0052] Figure 17 Figure 2 Fig. 12 is a perspective view of the flow guide cover;

[0053] Figure 18 Fig. 13 is a view of the inner surface structure of the flow guide cover;

[0054] Figure 19 Fig. 14 is a perspective view of the concave screen;

[0055] Figure 20 Fig. 15 is a perspective view of the support frame;

[0056] Figure 21 Fig. 16 is a perspective view of the support frame;

[0057] In the figure: 1 - feeding assembly; 2 - first roller assembly; 3 - second roller assembly; 4 - third roller assembly; 5 - fourth roller assembly; 6 - pulley; 7 - feeding blade; 8 - conical cylinder; 9 - central cylinder; 10 - rack; 11 - auxiliary disc; 12 - rack fixing plate; 13 - rack; 14 - shaft sleeve; 15 - large bevel gear; 16 - small bevel gear; 17 - small bevel gear shaft; 18 - gasket; 19 - long rack; 20 - stud; 21 - short rack; 22 - central shaft; 23 - flow guide cover; 24 - concave screen; 25 - support frame; 26 - rack fixing plate; 27 - rack clamping groove; 28 - threaded hole. DETAILED DESCRIPTION

[0058] ​​​​​The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0059] Embodiment

[0060] As shown in Figure 1 and Figure 2 , it is an embodiment of the segmented bidirectional rotating cylinder of the millet harvester of the present application, which comprises the following main parts: a support frame 25, a concave screen 24, a flow guide cover 23, a feeding assembly 1 and four cylinder assemblies 2, 3, 4 and 5 arranged side by side in sequence. The support frame 25 is shown in Figure 21 , which is a rectangular box-shaped structure and mainly provides a basis for the installation of other components. The concave screen 24 is shown in Figure 20 , which is a semicircular recessed shape and is directly installed in the support frame 25. A plurality of screen holes are provided on the concave screen 24, and the threshed millet falls from the screen holes to the support frame 25 below. The flow guide cover 23 is shown in Figure 18 and Figure 19 , which is a semicircular protrusion shape and is directly installed on the upper end of the support frame 25 through hinges and other components, and can be opened or closed. When the flow guide cover 23 is closed, the flow guide cover 23 and the concave screen 24 just enclose a horizontally extending circular cavity. The feeding assembly 1 and the four cylinder assemblies are arranged side by side in sequence and are installed in the circular cavity enclosed by the flow guide cover 23 and the concave screen 24, as shown in Figure 2 . The feeding assembly 1 is used to feed the material into the circular cavity, and the four cylinder assemblies are used to rub and thresh the material to achieve the threshing of the millet.

[0061] A central shaft 22 is provided in the length direction of the support frame 25, which extends horizontally and is fixed, so that the vertical bolt holes are provided at the end of the central shaft 22, and the central shaft 22 is fixed on the support frame 25 by screwing the bolts, to ensure that it does not move axially and circumferentially.

[0062] The feeding assembly 1 first comprises a conical cylinder 8, the smaller end of which is fixed with a belt pulley 6, and the larger end is directly fixed and connected with the first cylinder assembly 2. Two spiral feeding blades 7 are fixed on the outer surface of the conical cylinder 8, and the entire conical cylinder 8 is freely rotated on the central shaft 22. By connecting the motor on the belt pulley 6, the synchronous rotation of the motor, the conical cylinder 8 and the first cylinder assembly 2 can be realized.

[0063] The four roller assemblies are the most core components of the present application, and the structure of the four roller assemblies will be described in detail below. First, among the four roller assemblies, the first roller assembly 2 and the second roller assembly 3 achieve sufficient threshing of grains by rubbing and breaking ears, effectively reducing the grain code; the third roller assembly 4 and the fourth roller assembly 5 achieve the threshed grains again brushing and impacting, and at the same time, the grains are separated into the cleaning mechanism. The cleaning mechanism is not the point of the present application, so its structure will not be described. The basic structure of the four roller assemblies is the same, only the structure design of the outer periphery is different, as shown in Figures 3 to 14 As shown, the four roller assemblies each include a center cylinder 9, which is freely sleeved on the center shaft 22 and can freely rotate on the center shaft 22. A auxiliary disc 11 is fixed at each end of the center cylinder 9. The auxiliary disc 11 is disc-shaped, and the plane where it is located is perpendicular to the extension direction of the center cylinder 9. A plurality of tooth rod clamping grooves 27 are arranged on the outer edge of the auxiliary disc 11 in the circumferential direction, and a plurality of threaded holes 28 are arranged on the auxiliary disc 11 in the circumferential direction. Six tooth rods 10 are arranged between the two auxiliary discs 11. The six tooth rods 10 are arranged uniformly in the circumferential direction of the auxiliary disc 11, and the two ends of the tooth rod 10 are respectively embedded into the corresponding tooth rod clamping grooves 27 of the two auxiliary discs 11. Of course, since the number of tooth rod clamping grooves 27 on each auxiliary disc 11 is 12, the number of tooth rods 10 can also be selected between 6-12 according to actual production needs. As for the fixing method of the tooth rod 10, the end of the tooth rod 10 is welded with a tooth rod fixing plate 26, and the tooth rod fixing plate 26 is fixed in the corresponding threaded hole 28 by bolts, thereby achieving the fixation of all tooth rods 10. The above is the same part of the structure of the four roller assemblies.

[0064] The different parts of the structure of the four roller assemblies will be described below.

[0065] For the first roller assembly 2, as Figures 2 to 5As shown, since the left side of the first roller assembly 2 is the feeding assembly 1, the left auxiliary disc 11 of the first roller assembly 2 is directly fixedly connected with the larger end of the conical cylinder 8 through bolts, so that the feeding assembly 1 can directly drive the first roller assembly 2 to rotate. Three thread rod fixing plates 12 are fixed on each toothed rod 10, the three thread rod fixing plates 12 are equidistantly arranged in the extension direction of the toothed rod 10, and the three thread rod fixing plates 12 all extend towards the outer circumferential direction of the first roller assembly 2, thread rods 13 are fixed at the ends of the three corresponding thread rod fixing plates 12, the cross-sectional shape of the thread rod 13 in this embodiment is in the shape of “V”, and the opening thereof faces the toothed rod 10, and in working, the friction between the outer surface of the thread rod 13 and the concave sieve 24 is utilized to realize threshing of grains. In addition, since the left side of the thread rod 13 is limited by the feeding blade 7, the left end of the thread rod 13 cannot excessively extend to the left, and the right side of the thread rod 13 is the second roller assembly 3, so that the right end of the thread rod 13 can appropriately extend to the right under the condition that gaps are left in front of the first roller assembly 2 and the second roller assembly 3.

[0066] As shown in Figure 6 , Figure 7 and Figure 8 , the second roller assembly 3 is basically the same as the first roller assembly 2, and the only difference is that the left and right ends of the thread rod 13 can appropriately extend.

[0067] As shown in Figure 9 , Figure 10 and Figure 11 , the third roller assembly 4 is provided with not thread rods 13 but nails 20 on the toothed rod 10, and a plurality of nails 20 are arranged on each toothed rod 10, the nails 20 are directly fixedly connected with the toothed rod 10, the nails 20 are in the shape of long strips and are equidistantly arranged in the length direction of the toothed rod 10, and the nails 20 extend towards the outer circumferential direction of the third roller assembly 4. In working, the nails 20 are utilized to brush and impact the grains again through the friction between the nails 20 and the concave sieve 24 to realize threshing. In addition, since the left and right sides of the third roller assembly 4 can leave gaps with adjacent roller assemblies, the left and right ends of the toothed rod 10 can also appropriately extend, so that the long toothed rod 19 is formed.

[0068] As shown in Figure 12 , Figure 13 and Figure 14 , the fourth roller assembly 5 is basically the same as the third roller assembly 4, and the only difference is that the right auxiliary disc 11 is located at the rightmost end of the support frame 25, so that the right end of the toothed rod 10 cannot excessively extend to the right, so that the short toothed rod 21 is formed.

[0069] In summary, the first cylinder assembly 2 and the second cylinder assembly 3 are basically identical in structure, the only difference is that the length of the long bar 13 on the second cylinder assembly 3 is slightly larger than that of the first cylinder assembly 2; the third cylinder assembly 4 and the fourth cylinder assembly 5 are basically identical in structure, the only difference is that the length of the long toothed bar 19 on the third cylinder assembly 4 is slightly larger than that of the short toothed bar 21 on the fourth cylinder assembly 5.

[0070] Since the first cylinder assembly 2 has been directly driven to rotate by the feeding assembly 1, in order to realize the transmission of power between all the cylinder assemblies, and to ensure that the directions of rotation of adjacent two cylinder assemblies are opposite, the embodiment is provided with three shaft sleeve assemblies between adjacent two cylinder assemblies, each shaft sleeve assembly can not only realize the transmission of power from the left cylinder assembly to the right cylinder assembly, but also ensure that the directions of rotation of adjacent two cylinder assemblies are opposite, such a structure can generate different forces on the millet in different directions, can improve the threshing and separating capacity, and can solve the problems of insufficient threshing and too much grain during harvesting. The structure of the shaft sleeve assembly of the embodiment will be described in detail below.

[0071] As shown in Figure 15 , Figure 16 and Figure 17 , each shaft sleeve assembly first comprises a shaft sleeve 14, the shaft sleeve 14 is cylindrical and is sleeved on the central shaft 22, the shaft sleeve 14 is in key connection with the central shaft 22 to ensure that the shaft sleeve 14 is fixed. Two small bevel gear shafts 17 are symmetrically arranged on the shaft sleeve 14, the extension directions of the two small bevel gear shafts 17 are perpendicular to and intersect with the central shaft 22, and a small bevel gear 16 is freely arranged on each small bevel gear shaft 17, the two small bevel gears 16 are also symmetrically arranged with the center of the shaft sleeve 14, in order to avoid axial movement of the small bevel gear 16, the embodiment is further provided with a gasket 18 on the small bevel gear shaft 17. Large bevel gears 15 are symmetrically arranged on both sides of the shaft sleeve 14, the two large bevel gears 15 are also sleeved on the central shaft 22 and simultaneously mesh with the two small bevel gears 16, and the large bevel gears 15 and the corresponding central cylinders 9 are in synchronous rotation through key connection, that is Figure 17 , the left large bevel gear 15 is in key connection with the central cylinder 9 of the second cylinder assembly 3, and the right large bevel gear 15 is in key connection with the central cylinder 9 of the third cylinder assembly 4. Through the above structure, the transmission of power from left to right can be realized, and the directions of rotation of adjacent cylinder assemblies are ensured to be opposite, and the specific power transmission path is as follows: motor→feeding assembly 1→first cylinder assembly 2→shaft sleeve assembly→second cylinder assembly 3→shaft sleeve assembly→third cylinder assembly 4→shaft sleeve assembly→fourth cylinder assembly 5.

[0072] As shown in Figure 18 and Figure 19The diagram shows the structure of the guide cover 23. In this embodiment, the inner wall of the guide cover 23 is provided with guide plates corresponding to the roller assembly. The guide angle formed by the guide plates gradually increases along the direction of material movement. According to actual calculations, the guide angle of the leftmost guide plate corresponding to the first roller assembly 2 is 15°, the guide angle of the rightmost guide plate corresponding to the fourth roller assembly 5 is 25°, and the guide angles of the two middle guide plates corresponding to the second roller assembly 3 and the third roller assembly 4 can be set to 18° and 21° respectively. This is because the front end is the main threshing zone, and the guide angle is relatively small, which can make the axial movement speed of the crop slower and make the threshing effect more complete. The guide angle of the rear end is relatively large, which can accelerate the axial movement speed of the material and achieve the effect of preventing blockage.

[0073] like Figure 20 The diagram shows the structure of the concave sieve 24. According to actual calculations, the sieve hole size of the concave sieve 24 corresponding to the grooved rod 13 is 16*6mm or 10*6mm, and the sieve hole size of the concave sieve 24 corresponding to the nail tooth 20 is 32*6mm, which can achieve the best threshing and screening effect.

[0074] Finally, in this embodiment, a torque sensor can also be installed on the central cylinder 9 or the central shaft 22. The torque and torque sensed by the torque sensor are sent to the motor, and then the rotation speed of the central cylinder 9 is automatically controlled after feedback to achieve a high-efficiency threshing effect.

[0075] Overall, the segmented bidirectional rotating threshing drum of the millet harvester of the present invention has a simple structure and is easy to use. It can improve the threshing and separation capacity during operation, and can solve problems such as insufficient threshing and excessive grain stacks encountered during harvesting operations, thus having great practicality.

[0076] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A sectional bidirectional rotating cylinder of a millet harvester, characterized in that, The utility model relates to a kind of rotary drum screen, including: The circular cavity surrounded by upper and lower arrangement guide cover (23), concave plate sieve (24); Multiple drum assemblies are arranged in the circular cavity side by side, the rotation direction of adjacent two drum assemblies is opposite, the rotation center of drum assembly coincides with the central axis of circular cavity; One end of the circular cavity is provided with feeding assembly (1), material is sequentially passed through all drum assemblies in the circular cavity; The number of the drum assembly is four, and multiple grooved rods (13) are arranged on the front two drum assemblies, and multiple peg teeth (20) are arranged on the rear two drum assemblies, and the feeding assembly (1) is fixedly connected to the frontmost drum assembly; The center of the circular cavity is provided with fixed center shaft (22), and each drum assembly includes Center cylinder (9), which is sleeved on the center shaft (22) and can rotate freely; Auxiliary disc (11), which is two and is fixed to the two ends of the center cylinder (9), the outer edge of the auxiliary disc (11) is provided with multiple circumferentially distributed tooth rod clamping grooves (27); Tooth rod (10), which is multiple, the two ends of the tooth rod (10) are embedded in the corresponding tooth rod clamping grooves (27) of the two auxiliary discs (11) and are fixed therewith, and the tooth rod (10) is evenly arranged in the circumferential direction; The grooved rod (13) is fixed on the tooth rod (10) by the grooved rod fixing plate (12); The peg tooth (20) is directly fixed on the tooth rod (10); Adjacent two drum assemblies are provided with shaft sleeve assemblies for transmitting power, each shaft sleeve assembly includes Shaft sleeve (14), which is fixed to the center shaft (22); Small bevel gear shaft (17), which is two and is symmetrically arranged in the shaft sleeve (14), and the extension direction of the small bevel gear shaft (17) is perpendicular to the center shaft (22); Small bevel gear (16), which is two and is rotatably installed on the small bevel gear shaft (17) respectively; Large bevel gear (15), which is two and is symmetrically arranged on the two sides of the shaft sleeve (14), the large bevel gear (15) is engaged with the two small bevel gears (16), and the large bevel gear (15) is sleeved on the center shaft (22) and rotates synchronously with the corresponding center cylinder (9).

2. The sectional bidirectional rotating cylinder of the millet harvester according to claim 1, characterized in that: The auxiliary disc (11) is provided with circumferentially distributed screw holes (28), the two ends of the tooth rod (10) are fixed with tooth rod fixing plates (26), and the tooth rod fixing plates (26) are fixed on the screw holes (28) by bolts; The number of grooved rod fixing plates (12) on each tooth rod (10) is three, the three grooved rod fixing plates (12) are equidistantly arranged in the length direction of the tooth rod (10), the cross section of the grooved rod (13) is "V-shaped, the opening thereof faces the tooth rod (10), the grooved rod fixing plate (12) extends towards the outer circumferential direction of the drum assembly, and the grooved rod (13) is fixed to the end of the corresponding three grooved rod fixing plates (12); The number of peg teeth (20) on each tooth rod (10) is several, and is equidistantly arranged in the length direction of the tooth rod (10), and the shape of the peg tooth (20) is strip-shaped and extends towards the outer circumferential direction of the drum assembly.

3. The sectional bidirectional rotating cylinder of the millet harvester according to claim 1, characterized in that: The small bevel gear shaft (17) is further provided with a gasket (18) for preventing axial movement of the small bevel gear (16).

4. The sectional bidirectional rotating cylinder of the millet harvester according to claim 1, characterized in that: The feeding assembly (1) comprises a conical cylinder (8) with a belt pulley (6) fixed at a small end and an auxiliary disc (11) of a first roller assembly fixed at a large end, two helical feeding blades (7) fixed on the outer surface of the conical cylinder (8), and the belt pulley (6) connected with a motor for driving the feeding assembly (1) and all roller assemblies to rotate.

5. The sectional bidirectional rotating cylinder of the millet harvester according to claim 1, characterized in that: The inner wall of the flow guide cover (23) is provided with a guide plate corresponding to the roller assembly, and the flow guide angle formed by the guide plate gradually increases along the movement direction of the material. The screen hole size of the concave screen (24) corresponding to the grooved rod (13) is 16*6mm or 10*6mm, and the screen hole size of the concave screen (24) corresponding to the tine (20) is 32*6mm.

6. The sectional bidirectional rotating cylinder of the millet harvester according to claim 1, characterized in that: The flow guide cover (23) and the concave screen (24) are arranged on the support frame (25). The two ends of the central shaft (22) are supported on the support frame (25) and fixed as a whole.

7. The sectional bidirectional rotating cylinder of the millet harvester according to claim 4, characterized in that: The central cylinder (9) is provided with a torque sensor, and the torque sensor is electrically connected with the motor for sending a signal to the motor.

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