Segmented positive and negative rotation combined type axial flow roller threshing device

Abstract

The invention discloses a segmented forward and reverse rotation combined axial flow roller threshing device and belongs to agricultural machinery. The axial flow roller is composed of a center supporting main shaft, barrel type shafts I, II and III, a spiral blade type conical feeding head, rollers I, II, III and IV and rasp bar type threshing teeth, and the sectional driving power transmission system is composed of a motor, a total power input shaft, a total driving bevel gear, a branch power shaft, a driving barrel shaft and bevel gears A, B, C, D, E, F, G and H; according to the combined type threshing cylinder, the axial flow cylinder of an overall rigid structure is changed and designed to be segmented, the combined type threshing cylinder capable of rotating forwards and backwards can be achieved, the grain threshing rate is improved, the grain entrainment loss of grains in discharged straw is reduced, and the combined type threshing cylinder has the advantages of being novel, unique and reasonable in structure, good in operation quality, high in operation efficiency and reliable in use.

Description

Technical Field

[0001] The invention belongs to agricultural machinery, and mainly relates to a threshing device for cereal crops. Background Art

[0002] The axial flow threshing drum has a longer threshing process and processes the crop stems and ears for a longer time and more times, so its grain threshing rate is higher and the operation effect is better. Therefore, it has become a threshing device commonly used on various structures of combine harvesters. However, in many years of production operation practice, it is found that due to the overall rigid structure of the threshing drum, the threshing drum rotates in the same direction during operation and drives the threshed crops to rotate in the same direction, and the speed difference between them is small. Therefore, the impact and rubbing effect of the threshing drum on the straw and the ears is reduced, which affects and reduces the threshing effect to a certain extent. In particular, when the axial flow drum drives the straw to rotate in the same direction, a thick and dense straw layer is easily formed on the outside of the threshing drum, and the threshed grains are wrapped and entrained in the straw layer and cannot be screened and separated, resulting in a high grain entrainment loss rate and causing grain waste. Summary of the invention

[0003] The purpose of the present invention is to address the problems existing in the above-mentioned prior art, combine with the actual demand for the use of axial flow threshing devices in current threshing operations, and develop and design a new structure of segmented forward and reverse combined axial flow drum threshing device, so as to achieve the purpose of improving the grain threshing rate and reducing and minimizing the grain entrainment loss.

[0004] The purpose of the invention is achieved in this way: a gear box is fixed on the outer end wall of one side of the device housing, a central support main shaft is axially and radially positioned, circumferentially rotatably inserted on the device housing and the gear box, and is located above the arc-shaped screen plate, and a cylindrical shaft I, a cylindrical shaft II and a cylindrical shaft III are sequentially axially and radially positioned and circumferentially rotatably mounted on the outside of the central support main shaft from the inside to the outside, and the ends of the central support main shaft, the cylindrical shaft I, the cylindrical shaft II and the cylindrical shaft III located at the inner part of the gear box are respectively fixed. Bevel gear G, bevel gear D, bevel gear E and bevel gear H are respectively mounted on the parts of the central support main shaft, the barrel shaft I, the barrel shaft II and the barrel shaft III located in the device housing, and the spiral blade type conical feeding head and the roller I, the roller II, the roller III and the roller IV are respectively fixed on the outer surface of the circumference of the roller I, the roller II, the roller III and the roller IV in a spiral line shape, and the spiral line direction of the spiral bar type threshing teeth on the roller I and the roller III is consistent with the spiral line direction of the spiral bar type threshing teeth on the roller II and the roller IV. The direction of the line is opposite, a grass baffle is fixedly installed on the outer surface of the circumference of the drum IV, located at one end of the gear box body, and the straw discharge cylinder channels are connected to each other and arranged below the drum IV; a motor is equipped at the outer side of the gear box body, and the total power input shaft of the total driving bevel gear is fixedly supported and installed on the gear box body wall plate rotatably, the total power input shaft is connected with the motor shaft of the motor, the sub-power shaft and the total power input shaft are perpendicular to each other and rotatably installed in the gear box body, the bevel gear A and the bevel gear C are respectively fixed on the upper side and lower end of the sub-power shaft, and the drive cylinder shaft is axially and radially positioned and circumferentially rotatably mounted on the sub-power shaft between the bottom of the bevel gear A and the top of the bevel gear C, the bevel gear B and the bevel gear F are respectively fixed on the upper and lower ends of the drive cylinder shaft, the total driving bevel gear is respectively meshed with the bevel gear A and the bevel gear B, the bevel gear F is respectively meshed with the bevel gear G and the bevel gear H, and the bevel gear C is respectively meshed with the bevel gear D and the bevel gear E, so as to form a segmented forward and reverse combined axial flow drum threshing device.

[0005] The invention changes the design of the traditional and currently used axial flow drum with an integral rigid structure into a segmented and forward and reverse combined axial flow drum. During the axial flow threshing operation, the straw and the ear are subjected to forward and reverse impact, collision and rubbing processing in sequence and continuously and repeatedly, thereby improving the grain threshing rate. At the same time, the straw layer is shaken and torn to loosen the straw layer, and the entrained grains are separated, thereby reducing the entrainment loss. The invention has the characteristics of novel, unique and reasonable structure, good operation quality, high operation efficiency and reliable use. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a schematic diagram of the overall structure of a segmented forward and reverse combined axial flow drum threshing device;

[0007] Figure 2It is a schematic diagram of the structure of a segmented forward and reverse combined axial flow drum;

[0008] Figure 3 It is the structural diagram of the drive system;

[0009] Figure 4 It is a schematic diagram of the roller shaft structure of a segmented forward and reverse combined axial flow roller.

[0010] Description of part numbers in the figure:

[0011] 1. Motor, 2. Total power input shaft, 3. Total drive bevel gear, 4. Sub-power shaft, 5. Bevel gear A, 6. Bevel gear B, 7. Grass baffle, 8. Drum IV, 9. Corrugated rod threshing teeth, 10. Drum III, 11. Guide plate, 12. Drum II, 13. Drum I, 14. Spiral blade type conical feeding head, 15. Device housing, 16. Arc sieve plate, 17. Straw discharge channel, 18. Drum shaft III, 19. Bevel gear H, 20. Drum shaft II, 21. Bevel gear E, 22. Drum shaft I, 23. Bevel gear C, 24. Bevel gear D, 25. Center support main shaft, 26. Bevel gear G, 27. Bevel gear F, 28. Drive drum shaft, 29. Gear box. DETAILED DESCRIPTION

[0012] The following is a detailed description of the implementation scheme of the invention in conjunction with the accompanying drawings. A segmented forward and reverse combined axial flow drum threshing device includes a device housing 15, a guide plate 11 is installed on the inner wall surface of the upper end of the device housing 15, an arc-shaped screen plate 16 is installed on the middle part of the inner side of the device housing 15, a gear box 29 is fixed on the outer wall surface of one side of the device housing 15, a central support main shaft 25 is axially and radially positioned and circumferentially rotatably inserted on the device housing 15 and the gear box 29, and is located above the arc-shaped screen plate 16, and a cylindrical shaft I 22, a cylindrical shaft II 20 and a cylindrical shaft III 18 are sequentially axially and radially positioned and circumferentially rotatably mounted on the outside of the central support main shaft 25 from the inside to the outside, The ends of the central support main shaft 25, the cylindrical shaft I 22, the cylindrical shaft II 20 and the cylindrical shaft III 18 located at the inner side of the gear box body 29 are respectively fixed with bevel gears G26, bevel gears D24, bevel gears E21 and bevel gears H19. The spiral blade type conical feeding head 14 and the roller I 13, roller II 12, roller III 10 and roller IV 8 are respectively mounted on the parts of the central support main shaft 25, the cylindrical shaft I 22, the cylindrical shaft II 20 and the cylindrical shaft III 18 located in the device housing 15. The outer surfaces of the circumferences of the rollers I 13, the rollers II 12, the rollers III 10 and the rollers IV 8 are respectively fixed with spiral lines. Rod-type threshing teeth 9, the spiral direction of the corrugated rod-type threshing teeth 9 on the rollers Ⅰ13 and Ⅲ10 is opposite to the spiral direction of the corrugated rod threshing teeth 9 on the rollers Ⅱ12 and Ⅳ8, a grass baffle 7 is fixedly installed on the outer surface of the circumference of the roller Ⅳ8 at one end of the gear box 29, and the straw discharge cylinder 17 is interconnected and arranged below the roller Ⅳ8; a motor 1 is installed at the outer side of the gear box 29, and the total power input shaft 2 of the total driving bevel gear 3 is rotatably supported and installed on the wall plate of the gear box 29, the total power input shaft 2 is connected to the motor shaft of the motor 1, and the sub-power shaft 4 is perpendicular to the total power input shaft 2 and It is rotatably mounted in the gear box body 29, and the bevel gear A5 and the bevel gear C23 are respectively fixed on the upper side and the lower end of the transfer shaft 4. On the transfer shaft 4, the drive shaft 28 is axially and radially positioned and circumferentially rotatably mounted between the bottom of the bevel gear A5 and the top of the bevel gear C23. The bevel gear B6 and the bevel gear F27 are respectively fixed on the upper and lower ends of the drive shaft 28. The total drive bevel gear 3 is respectively meshed with the bevel gear A5 and the bevel gear B6, the bevel gear F27 is respectively meshed with the bevel gear G26 and the bevel gear H19, and the bevel gear C23 is respectively meshed with the bevel gear D24 and the bevel gear E21.

[0013] When in operation, start the motor 1, and the rotational power of the motor 1 drives the bevel gear A5 and the bevel gear B6 to rotate in the opposite direction through the total power input shaft 2 and the total driving bevel gear 3, wherein the bevel gear A5 drives the bevel gear D24 and the bevel gear E21 to rotate in the positive and negative directions respectively through the power shaft 4 and the bevel gear C23, and the bevel gear D24 and the bevel gear E21 drive the roller II 12 and the roller III 10 to rotate in the positive and negative directions respectively through the cylinder shaft I 22 and the cylinder shaft II 20, and at the same time, the bevel gear B6 drives the bevel gear G26 and the bevel gear H19 to rotate in the positive and negative directions respectively through the driving cylinder shaft 28 and the bevel gear F27. The bevel gear G26 and bevel gear H19 respectively drive the roller I13, spiral blade cone feeding head 14 and roller IV8 to realize positive and negative rotation through the central support main shaft 25 and the cylinder shaft III18, and use the corrugated rod type threshing teeth 9 with opposite spiral directions on each roller to complete the threshing and separation of straw fed from the feeding end and sent by the spiral blade cone feeding head 14. The separated grains are discharged by the arc screen plate 16. The straw is sent from the feeding end to the grass baffle 7 under the cooperation of the guide plate 11 and the corrugated rod type threshing teeth 9 with opposite spiral lines on each roller, and discharged from the device through the straw discharge channel 17. During operation, the rotation direction of roller I13 and roller III10 is the same, and the rotation direction of roller II12 and roller IV8 is opposite to that of roller I13 and roller III10.

Claims

1. A segmented forward and reverse combined axial flow drum threshing device, comprising a device housing (15), a guide plate (11) is installed on the inner wall surface of the upper end of the device housing (15), and an arc-shaped screen plate (16) is installed on the middle part of the inner side of the device housing (15), characterized in that: A gear box (29) is fixedly mounted on the outer end wall of one side of the device housing (15); the central support main shaft (25) is inserted into the device housing (15) and the gear box (29) in an axially and radially positioned manner and circumferentially rotatable manner and is located above the arc-shaped screen plate (16); a cylindrical shaft I (22), a cylindrical shaft II (20) and a cylindrical shaft III (18) are sequentially mounted on the outside of the central support main shaft (25) in an axially and radially positioned manner and circumferentially rotatable manner from the inside to the outside; and bevel gears G (26), bevel gears G (27) and G (28) are fixedly mounted on the ends of the central support main shaft (25), the cylindrical shaft I (22), the cylindrical shaft II (20) and the cylindrical shaft III (18) located on the inner side of the gear box (29), respectively. The central support main shaft (25), the cylindrical shaft I (22), the cylindrical shaft II (20) and the cylindrical shaft III (18) are respectively fitted with a spiral blade type conical feeding head (14) and a roller I (13), a roller II (12), a roller III (10) and a roller IV (8) at the positions of the central support main shaft (25), the cylindrical shaft I (22), the cylindrical shaft II (20) and the cylindrical shaft III (18) located in the device housing (15), and the corrugated bar type threshing teeth (9) are respectively fixed in a spiral line shape on the outer circumferential surface of the roller I (13), the roller II (12), the roller III (10) and the roller IV (8), and the corrugated bar type threshing teeth (9) on the roller I (13) and the roller III (10) have a spiral line direction that is consistent with the spiral line direction of the roller II ( The spiral lines of the threshing teeth (9) on the ribs of the roller (12) and the roller (IV) (8) are opposite in direction, a grass baffle (7) is fixedly mounted on the outer circumferential surface of the roller (IV) (8) and located at one end of the gear box (29), and the straw discharge channel (17) is arranged below the roller (IV) (8) in a manner that they are interconnected; a motor (1) is mounted on the outer side of the gear box (29), a total power input shaft (2) of a total driving bevel gear (3) is fixedly mounted and rotatably supported on the wall plate of the gear box (29), the total power input shaft (2) is connected to the motor shaft of the motor (1), a sub-power shaft (4) and the total power input shaft (2) are mutually perpendicular and rotatably mounted in the gear box (29), and a bevel gear (A) is mounted on the outer side of the gear box (29) and the total power input shaft (2 ... and a sub-power shaft (4) and the total power input shaft (2) are fixedly mounted and rotatably supported on the wall plate of the gear box (29) and the total power input shaft (2) are fixedly mounted and rotatably supported on the wall plate of the gear box (29), and a sub-power shaft (4) and the total power input shaft (2) are fixedly mounted and rotatably supported in the gear box (29) and the bevel gear (A) is mounted on the outer side of the gear box (29 A bevel gear (5) and a bevel gear C (23) are respectively fixedly mounted on the upper side and lower end of the power distribution shaft (4); a drive shaft (28) is axially and radially positioned and circumferentially rotatably mounted on the power distribution shaft (4) at a position between the lower side of the bevel gear A (5) and the upper side of the bevel gear C (23); a bevel gear B (6) and a bevel gear F (27) are respectively fixedly mounted on the upper and lower ends of the drive shaft (28); the total drive bevel gear (3) is respectively meshed with the bevel gear A (5) and the bevel gear B (6); the bevel gear F (27) is respectively meshed with the bevel gear G (26) and the bevel gear H (19); and the bevel gear C (23) is respectively meshed with the bevel gear D (24) and the bevel gear E (21).

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