阅读说明：本技术 一种无漏耕十字轴传动抛土灭茬旋耕机 (No-missing cross shaft transmission soil throwing stubble cleaning rotary cultivator ) 是由 张二兵 于 2020-12-23 设计创作，主要内容包括：本发明公开了一种无漏耕十字轴传动抛土灭茬旋耕机,包括变速箱、传动箱和连接箱,所述变速箱两侧外壁均固定设有固定板,所述变速箱上端内壁固定设有第一轴承,所述第一轴承内固定输入轴,所述输入轴上端连接有十字轴,所述输入轴下端固定设有第一锥齿轮。有益效果：能够通过向变速箱、传动箱和连接箱内注入润滑油,从而能够将内部的齿轮和轴承浸泡在润滑油内,从而能够对齿轮和轴承进行润滑,并且设置有散热片能够对润滑油进行散热,而且能够通过控制液压缸的伸缩调节旋耕的深度,调节更加方便,并且传动箱下端的区域能够利用铣旋刀片进行旋耕,从而能够消除旋耕灭茬的盲区,而且便于对润滑油进行更换。(The invention discloses a non-missing-tillage cross-shaft-transmission soil-throwing stubble-cleaning rotary cultivator which comprises a gearbox, a transmission case and a connecting case, wherein fixing plates are fixedly arranged on the outer walls of two sides of the gearbox, a first bearing is fixedly arranged on the inner wall of the upper end of the gearbox, an input shaft is fixedly arranged in the first bearing, the upper end of the input shaft is connected with a cross shaft, and a first bevel gear is fixedly arranged at the lower end of the input shaft. Has the advantages that: can be through to the gearbox, pour into lubricating oil into in transmission case and the connecting box, thereby can soak gear and the bearing of inside in lubricating oil, thereby can lubricate gear and bearing, and be provided with the fin and can dispel the heat to lubricating oil, and can adjust the degree of depth of rotary tillage through the flexible of control pneumatic cylinder, it is more convenient to adjust, and the region of transmission case lower extreme can utilize to mill the rotary blade to carry out the rotary tillage, thereby can eliminate the blind area of rotary tillage stubble-cleaning, and be convenient for change lubricating oil.)

1. A cross-shaft transmission soil throwing stubble cleaning rotary cultivator without missing cultivation is characterized by comprising a gearbox (1), a transmission case (2) and a connecting case (3).

2. The cross-shaft transmission soil throwing and stubble cleaning rotary cultivator without missing cultivation according to claim 1, wherein the outer walls of two sides of the gearbox (1) are both fixedly provided with a fixing plate (4), the inner wall of the upper end of the gearbox (1) is fixedly provided with a first bearing (5), the first bearing (5) is internally fixed with an input shaft (6), the upper end of the input shaft (6) is connected with a cross shaft (7), the lower end of the input shaft (6) is fixedly provided with a first bevel gear (8), the outer wall of the upper end of the gearbox (1) is fixedly provided with a first limiting cylinder (9), the first limiting cylinder (9) is internally fixed with a first sealing ring which is sleeved on the outer wall of the input shaft (6), the inner walls of two sides of the gearbox (1) are both fixedly provided with second bearings (10), and a rotating shaft (11) is fixedly arranged between the second bearings (10), a second bevel gear (12) and a third bevel gear (13) are fixedly sleeved on the outer wall of the middle part of the rotating shaft (11), the second bevel gear (12) is meshed with the first bevel gear (8), a third bearing (14) is fixedly arranged on the inner wall of the lower end of the gearbox (1), a first transmission shaft (15) is fixedly arranged in the third bearing (14), a fourth bevel gear (16) is fixedly arranged at the upper end of the first transmission shaft (15), the fourth bevel gear (16) is meshed with the third bevel gear (13), a second limiting cylinder (17) is fixedly arranged at the lower end of the gearbox (1), a second sealing ring is fixedly arranged in the second limiting cylinder (17), the second sealing ring is sleeved on the outer wall of the first transmission shaft (15), a first oil filling port (18) is arranged at the upper end of the gearbox (1), a first oil discharging port (19) is arranged on one side of the lower end of the gearbox (1), the outer walls of the first oil filling port (18) and the second oil filling port (33) are in threaded connection with a first sealing cover, a plurality of first cooling fins (20) are fixedly embedded at the lower end of the gearbox (1), a sliding barrel (21) is slidably sleeved on the outer wall of the lower end of the first transmission shaft (15), four protrusions (22) are fixedly arranged on the outer wall of the first transmission shaft (15) at equal intervals along the circumferential direction, four grooves (23) matched with the protrusions (22) are formed in the sliding barrel (21), a fourth bearing (24) is fixedly arranged on the inner wall of the upper end of the transmission case (2), the fourth bearing (24) is fixedly sleeved on the outer wall of the sliding barrel (21), a fifth bevel gear (25) is fixedly arranged at the lower end of the sliding barrel (21), fifth bearings (26) are fixedly arranged on the inner walls of two sides of the transmission case (2), and a pear cutter shaft (27) is fixedly arranged between the fifth bearings (26), the two ends of the pear cutter shaft (27) extend out of the transmission case (2), a plurality of pear cutter assemblies are mounted on the outer walls of the two ends of the pear cutter shaft (27), a sixth bevel gear (28) is fixedly sleeved on the outer wall of the pear cutter shaft (27), a sixth bearing (29) is fixedly arranged on the inner wall of the lower end of the transmission case (2), a second transmission shaft (30) is fixedly arranged in the sixth bearing (29), a plurality of milling cutter blades (31) are fixedly arranged on the outer wall of the lower end of the second transmission shaft (30), a seventh bevel gear (32) is fixedly arranged on the second transmission shaft (30), the seventh bevel gear (32) and the fifth bevel gear (25) are both meshed with the sixth bevel gear (28), a second oil filling port (33) is arranged at the upper end of the transmission case (2), a second oil discharging port (34) is arranged at the lower end of the transmission case (2), and second oil filling port (33) and the outer wall of the second oil discharging port (34) are both in threaded, the upper wall of the transmission case (2) is fixedly embedded with a plurality of second cooling fins (35), the outer wall of the upper end of the transmission case (2) is fixedly provided with a third limiting cylinder (36), the inner part of the third limiting cylinder (36) is fixedly provided with a third sealing ring, the outer wall of the sliding cylinder (21) is sleeved with the third sealing ring, the outer wall of the lower end of the transmission case (2) is fixedly provided with a fourth limiting cylinder (37), the inner part of the fourth limiting cylinder (37) is fixedly provided with a fourth sealing ring, the outer wall of the second transmission shaft (30) is sleeved with the fourth sealing ring, the outer walls of two sides of the transmission case (2) are fixedly provided with fifth limiting cylinders (38), the fifth limiting cylinders (38) are fixedly provided with fifth sealing rings, the fifth sealing rings are all sleeved on the outer wall of the pear cutter shaft (27), and two hydraulic cylinders (39) are fixedly arranged below two ends of the fixing plate (4), a connecting box (3) is fixedly arranged between telescopic rods of the hydraulic cylinders (39) at the same side, seventh bearings (40) are fixedly arranged in the connecting box (3), third transmission shafts (41) are fixedly arranged in the seventh bearings (40), one ends of the third transmission shafts (41) extend out of the connecting box (3), one ends of the third transmission shafts (41) extending out of the connecting box (3) are fixedly provided with first connecting plates (42), two ends of the pear cutter shaft (27) are fixedly provided with second connecting plates (43), the first connecting plates (42) are fixedly connected with the corresponding second connecting plates (43) through bolts and nuts, the upper end of the connecting box (3) is provided with a third oil filling port (44), one side of the lower end of the connecting box (3) is provided with a third oil discharging port (45), and the outer walls of the third oil filling port (44) and the third oil discharging port (45) are both in threaded connection with a third sealing cover, connecting box (3) a lateral wall is fixed to be inlayed and is equipped with a plurality of third fin (52), connecting box (3) a side outer wall is fixed and is equipped with a sixth spacing section of thick bamboo (53), a sixth spacing section of thick bamboo (53) internal fixation is equipped with the sixth sealing washer, the sixth sealing washer cover is established third transmission shaft (41) outer wall, equal fixed mounting groove (46) that is equipped with on fixed plate (4), mounting groove (46) are the spill structure, just the mounting hole has all been seted up to the both sides wall of mounting groove (46).

3. The cross-shaft transmission soil throwing stubble ploughing rotary cultivator without missing cultivation of claim 2, characterized in that a plurality of stirring blades (47) are fixed on the outer wall of both ends of the rotating shaft (11).

4. The cross-shaft transmission soil throwing stubble ploughing rotary cultivator without missing cultivation of claim 2, characterized in that a first access hole is opened on the front face of the gearbox (1), and a first sealing plate (48) is fixedly arranged on the outer wall of the access hole through bolts.

5. The cross-shaft transmission soil throwing and stubble cleaning rotary cultivator without missing cultivation of claim 4, wherein a second access hole is formed in the front face of the transmission box (2), and a second sealing plate (49) is fixedly arranged on the outer wall of the access hole through bolts.

6. The cross-shaft transmission soil throwing stubble ploughing rotary cultivator of claim 5, wherein the inner walls of the first sealing plate (48) and the second sealing plate (49) are fixedly provided with sealing gaskets.

7. The no-tillage cross-shaft transmission soil throwing stubble ploughing rotary cultivator of claim 2, wherein the pear cutter assembly comprises pear cutter seats (50), the pear cutter seats (50) are fixed on the outer wall of the pear cutter shaft (27), and pear cutters (51) are fixedly arranged on the pear cutter shaft (27) through bolts and nuts.

8. The cross-axle transmission soil throwing stubble ploughing rotary cultivator without missing cultivation of claim 2, characterized in that the milling rotary blade (31) is arranged in a spiral structure.

9. The cross-axle transmission soil throwing stubble ploughing rotary cultivator of claim 7, wherein the pear cutter (51) is arranged in an L-shaped structure.

Technical Field

The invention relates to the technical field of rotary cultivators, in particular to a cross-shaft transmission soil throwing stubble cleaning rotary cultivator without missing cultivation.

Background

The rotary cultivator is a cultivator which is matched with a tractor to complete the operations of ploughing and harrowing. The soil breaking machine has the characteristics of strong soil breaking capacity, flat ground surface after ploughing and the like, so that the soil breaking machine is widely applied; meanwhile, the stubble buried below the ground surface can be cut up, the operation of the seeder is convenient, and a good seedbed is provided for later-stage seeding. The rotary tillage cutter shaft is divided into a horizontal shaft type and a vertical shaft type according to the configuration mode of the rotary tillage cutter shaft. The correct use and adjustment of the rotary tiller is important to maintain its good technical state and to ensure the quality of cultivation. The method has the effects of breaking the plough bottom layer, recovering the plough layer structure of the soil, improving the water storage and soil moisture conservation capability of the soil, eliminating part of weeds, reducing plant diseases and insect pests, leveling the ground surface, improving the standard of agricultural mechanized operation and the like.

The current rotary cultivator is easy to cause chain breakage and damage to a bearing and a gear due to lack of a lubricating system, even damage to a transmission case assembly and other serious mechanical faults, so that the machine is easy to break down frequently, the rotary cultivation progress is seriously influenced, particularly, the rotary cultivation machine with intermediate transmission is directly influenced on the quality of rotary cultivation stubble cleaning and seeding due to the fact that a rotary cutter cannot be mounted at the corresponding lower end of the intermediate transmission case and a rotary cultivation stubble cleaning blind area with the width of 20cm is caused, and the grain yield is influenced.

An effective solution to the problems in the related art has not been proposed yet.

Disclosure of Invention

The invention aims to provide a cross-shaft transmission soil throwing stubble cleaning rotary cultivator without missing cultivation, which aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a non-missing tillage cross shaft transmission soil throwing stubble cleaning rotary cultivator comprises a gearbox, a transmission case and a connecting case, wherein fixing plates are fixedly arranged on the outer walls of two sides of the gearbox, a first bearing is fixedly arranged on the inner wall of the upper end of the gearbox, an input shaft is fixedly arranged in the first bearing, a cross shaft is connected to the upper end of the input shaft, a first bevel gear is fixedly arranged at the lower end of the input shaft, a first limiting cylinder is fixedly arranged on the outer wall of the upper end of the gearbox, a first sealing ring is fixedly arranged in the first limiting cylinder, the first sealing ring is sleeved on the outer wall of the input shaft, second bearings are fixedly arranged on the inner walls of two sides of the gearbox, a rotating shaft is fixedly arranged between the second bearings, a second bevel gear and a third bevel gear are fixedly sleeved on the outer wall of the middle of the rotating shaft, the second bevel gear is, a first transmission shaft is fixedly arranged in the third bearing, a fourth bevel gear is fixedly arranged at the upper end of the first transmission shaft and is meshed with the third bevel gear, a second limiting cylinder is fixedly arranged at the lower end of the gearbox, a second sealing ring is fixedly arranged in the second limiting cylinder and is sleeved on the outer wall of the first transmission shaft, a first oil filling port is arranged at the upper end of the gearbox, a first oil discharging port is arranged on one side of the lower end of the gearbox, the outer walls of the first oil filling port and the second oil filling port are in threaded connection with a first sealing cover, a plurality of first cooling fins are fixedly embedded at the lower end of the gearbox, a sliding cylinder is slidably sleeved on the outer wall of the lower end of the first transmission shaft, a plurality of four protrusions are fixedly arranged on the outer wall of the first transmission shaft at equal intervals along the circumferential direction, and grooves which are matched with the protrusions are arranged in the sliding cylinder, the inner wall of the upper end of the transmission case is fixedly provided with a fourth bearing, the fourth bearing is fixedly sleeved on the outer wall of the sliding cylinder, the lower end of the sliding cylinder is fixedly provided with a fifth bevel gear, the inner walls of two sides of the transmission case are fixedly provided with fifth bearings, a pear cutter shaft is fixedly arranged between the fifth bearings, two ends of the pear cutter shaft extend out of the transmission case, the outer walls of two ends of the pear cutter shaft are respectively provided with a plurality of pear cutter assemblies, the outer wall of the pear cutter shaft is fixedly sleeved with a sixth bevel gear, the inner wall of the lower end of the transmission case is fixedly provided with a sixth bearing, a second transmission shaft is fixedly arranged in the sixth bearing, the outer wall of the lower end of the second transmission shaft is fixedly provided with a plurality of milling rotary cutter blades, the second transmission shaft is fixedly provided with a seventh bevel gear, the seventh bevel gear and the fifth bevel gear are engaged with the sixth, the lower end of the transmission case is provided with a second oil discharge port, the outer walls of the second oil filling port and the second oil discharge port are in threaded connection with a second sealing cover, a plurality of second cooling fins are fixedly embedded in the upper wall of the transmission case, a third limiting cylinder is fixedly arranged on the outer wall of the upper end of the transmission case, a third sealing ring is fixedly arranged in the third limiting cylinder, the outer wall of the sliding cylinder is sleeved with the third sealing ring, a fourth limiting cylinder is fixedly arranged on the outer wall of the lower end of the transmission case, a fourth sealing ring is fixedly arranged in the fourth limiting cylinder, the outer wall of the second transmission shaft is sleeved with the fourth sealing ring, fifth limiting cylinders are fixedly arranged on the outer walls of the two sides of the transmission case, fifth sealing rings are fixedly arranged in the fifth limiting cylinders, the outer walls of the pear cutter shaft are all sleeved with the fifth sealing rings, two hydraulic cylinders are fixedly arranged below the two ends of the fixed plate, and a connecting case is fixedly arranged between, seventh bearings are fixedly arranged in the connecting boxes, third transmission shafts are fixedly arranged in the seventh bearings, one end of each third transmission shaft extends out of the connecting box, and one end of the third transmission shaft extending out of the connecting box is fixedly provided with a first connecting plate, both ends of the pear cutter shaft are fixedly provided with second connecting plates, the first connecting plate and the corresponding second connecting plate are fixedly connected through bolts and nuts, the upper end of the connecting box is provided with a third oil filling port, one side of the lower end of the connecting box is provided with a third oil discharging port, the outer walls of the third oil filling port and the third oil discharging port are both in threaded connection with a third sealing cover, a plurality of third radiating fins are fixedly embedded in one side wall of the connecting box, the outer wall of one side of the connecting box is fixedly provided with a sixth limiting cylinder, a sixth sealing ring is fixedly arranged in the sixth limiting cylinder, and the outer wall of the third transmission shaft is sleeved with the sixth sealing ring.

Further, all fixedly on the fixed plate be equipped with the mounting groove, the mounting groove is the spill structure, just the mounting hole has all been seted up to the both sides wall of mounting groove.

Furthermore, a plurality of stirring blades are fixedly arranged on the outer walls of the two ends of the rotating shaft.

Furthermore, a first access hole is formed in the front face of the gearbox, and a first sealing plate is fixedly arranged on the outer wall of the access hole through a bolt.

Furthermore, a second access hole is formed in the front face of the transmission box, and a second sealing plate is fixedly arranged on the outer wall of the access hole through a bolt.

Furthermore, the inner walls of the first sealing plate and the second sealing plate are fixedly provided with sealing gaskets.

Furthermore, the pear cutter assembly comprises pear cutter seats, the pear cutter seats are fixed on the outer wall of the pear cutter shaft, and pear cutters are fixedly arranged on the pear cutter shaft through bolts and nuts.

Furthermore, the milling and rotating blade is arranged to be of a spiral structure.

Furthermore, the pear sword sets up and is L type structure.

Compared with the prior art, the invention has the following beneficial effects: can be through to the gearbox, pour into lubricating oil into in transmission case and the connecting box, thereby can soak gear and the bearing of inside in lubricating oil, thereby can lubricate gear and bearing, and be provided with the fin and can dispel the heat to lubricating oil, and can adjust the degree of depth of rotary tillage through the flexible of control pneumatic cylinder, it is more convenient to adjust, and the region of transmission case lower extreme can utilize to mill the rotary blade to carry out the rotary tillage, thereby can eliminate the blind area of rotary tillage stubble-cleaning, and be convenient for change lubricating oil.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a no-missing cross-axle transmission soil-throwing stubble-cleaning rotary cultivator according to an embodiment of the invention;

FIG. 2 is a cross-sectional view of a gearbox in a no-missing cross-axle transmission soil throwing stubble ploughing rotary cultivator according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view of a transmission case of a no-missing cross-axle transmission soil-throwing stubble-cleaning rotary cultivator according to an embodiment of the invention;

FIG. 4 is a cross-sectional view of a connecting box in a no-missing cross-axle transmission soil-throwing stubble-cleaning rotary cultivator according to an embodiment of the invention;

FIG. 5 is a side view of a hydraulic cylinder in a cross-axle driven no-missing tillage stubble-ploughing rotary cultivator according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a pear cutter assembly in a no-missing cross-axle transmission soil-throwing stubble-cleaning rotary cultivator according to an embodiment of the invention;

FIG. 7 is a cross-shaft transmission soil throwing stubble ploughing rotary cultivator without missing tillage according to the embodiment of the present invention;

FIG. 8 is a cross-sectional view of the mounting groove of the no-missing cross-axle transmission soil-throwing stubble-cleaning rotary cultivator according to the embodiment of the invention.

Reference numerals:

1. a gearbox; 2. a transmission case; 3. a connecting box; 4. a fixing plate; 5. a first bearing; 6. an input shaft; 7. a cross shaft; 8. a first bevel gear; 9. a first limiting cylinder; 10. a second bearing; 11. a rotating shaft; 12. a second bevel gear; 13. a third bevel gear; 14. a third bearing; 15. a first drive shaft; 16. a fourth bevel gear; 17. a second limiting cylinder; 18. a first oil filler port; 19. a first oil discharge port; 20. a first heat sink; 21. a slide cylinder; 22. a protrusion; 23. a groove; 24. a fourth bearing; 25. a fifth bevel gear; 26. a fifth bearing; 27. a pear cutter shaft; 28. a sixth bevel gear; 29. a sixth bearing; 30. a second drive shaft; 31. milling a rotary blade; 32. a seventh bevel gear; 33. a second oil filler port; 34. a second oil drain port; 35. a second heat sink; 36. a third limiting cylinder; 37. a fourth limiting cylinder; 38. a fifth limiting cylinder; 39. a hydraulic cylinder; 40. a seventh bearing; 41. a third drive shaft; 42. a first connecting plate; 43. a second connecting plate; 44. a third oil filler opening; 45. a third oil drain port; 46. mounting grooves; 47. stirring blades; 48. a first sealing plate; 49. a second sealing plate; 50. a tool apron; 51. pear knives; 52. a third heat sink; 53. and a sixth limiting cylinder.

Detailed Description

The invention is further described with reference to the following drawings and detailed description:

the first embodiment is as follows:

referring to fig. 1-8, a cross-axle transmission soil-throwing stubble-cleaning rotary cultivator without missing tillage according to an embodiment of the present invention includes a transmission case 1, a transmission case 2 and a connection case 3, wherein the outer walls of both sides of the transmission case 1 are respectively and fixedly provided with a fixing plate 4, the inner wall of the upper end of the transmission case 1 is fixedly provided with a first bearing 5, the first bearing 5 is internally and fixedly provided with an input shaft 6, the upper end of the input shaft 6 is connected with a cross axle 7, the lower end of the input shaft 6 is fixedly provided with a first bevel gear 8, the outer wall of the upper end of the transmission case 1 is fixedly provided with a first limiting cylinder 9, the first limiting cylinder 9 is internally and fixedly provided with a first sealing ring, the first sealing ring is sleeved on the outer wall of the input shaft 6, the inner walls of both sides of the transmission case 1 are respectively and fixedly provided with a second bearing 10, a rotating shaft 11 is fixedly provided between the second bearings, the second bevel gear 12 is engaged with the first bevel gear 8, a third bearing 14 is fixedly arranged on the inner wall of the lower end of the gearbox 1, a first transmission shaft 15 is fixedly arranged in the third bearing 14, a fourth bevel gear 16 is fixedly arranged at the upper end of the first transmission shaft 15, the fourth bevel gear 16 is engaged with the third bevel gear 13, a second limiting cylinder 17 is fixedly arranged at the lower end of the gearbox 1, a second sealing ring is fixedly arranged in the second limiting cylinder 17, the second sealing ring is sleeved on the outer wall of the first transmission shaft 15, a first oil filling port 18 is arranged at the upper end of the gearbox 1, a first oil discharging port 19 is arranged on one side of the lower end of the gearbox 1, first sealing covers are in threaded connection with the outer walls of the first oil filling port 18 and the second oil filling port 33, a plurality of first cooling fins 20 are fixedly embedded at the lower end of the gearbox 1, and a sliding cylinder 21 is arranged at the outer wall of the, and the outer wall of the first transmission shaft 15 is fixedly provided with four protrusions 22 at equal intervals along the circumferential direction, the sliding cylinder 21 is internally provided with four grooves 23 which are matched with the protrusions 22, the inner wall of the upper end of the transmission case 2 is fixedly provided with a fourth bearing 24, the fourth bearing 24 is fixedly sleeved on the outer wall of the sliding cylinder 21, the lower end of the sliding cylinder 21 is fixedly provided with a fifth bevel gear 25, the inner walls of the two sides of the transmission case 2 are fixedly provided with fifth bearings 26, a pear cutter shaft 27 is fixedly arranged between the fifth bearings 26, the two ends of the pear cutter shaft 27 extend out of the transmission case 2, the outer walls of the two ends of the pear cutter shaft 27 are respectively provided with a plurality of pear cutter assemblies, the outer wall of the pear cutter shaft 27 is fixedly provided with a sixth bevel gear 28, the inner wall of the lower end of the transmission case 2 is fixedly provided with a sixth bearing 29, and a second transmission shaft 30 is fixedly arranged, a plurality of milling rotary blades 31 are fixedly arranged on the outer wall of the lower end of the second transmission shaft 30, a seventh bevel gear 32 is fixedly arranged on the second transmission shaft 30, the seventh bevel gear 32 and the fifth bevel gear 25 are both meshed with the sixth bevel gear 28, a second oil filling port 33 is arranged at the upper end of the transmission case 2, a second oil discharge port 34 is arranged at the lower end of the transmission case 2, a second sealing cover is in threaded connection with the outer walls of the second oil filling port 33 and the second oil discharge port 34, a plurality of second cooling fins 35 are fixedly embedded on the upper wall of the transmission case 2, a third limiting cylinder 36 is fixedly arranged on the outer wall of the upper end of the transmission case 2, a third sealing ring is fixedly arranged in the third limiting cylinder 36, the third sealing ring is sleeved on the outer wall of the sliding cylinder 21, a fourth limiting cylinder 37 is fixedly arranged on the outer wall of the lower end of the transmission case 2, and a fourth sealing ring is fixedly arranged, the fourth sealing ring is sleeved on the outer wall of the second transmission shaft 30, the outer walls of two sides of the transmission case 2 are fixedly provided with fifth limiting cylinders 38, fifth sealing rings are fixedly arranged in the fifth limiting cylinders 38, the fifth sealing rings are sleeved on the outer wall of the pear cutter shaft 27, two hydraulic cylinders 39 are fixedly arranged below two ends of the fixing plate 4, a connecting case 3 is fixedly arranged between telescopic rods of the hydraulic cylinders 39 on the same side, a seventh bearing 40 is fixedly arranged in the connecting case 3, a third transmission shaft 41 is fixedly arranged in the seventh bearing 40, one end of the third transmission shaft 41 extends out of the connecting case 3, one end of the third transmission shaft 41 extending out of the connecting case 3 is fixedly provided with a first connecting plate 42, two ends of the pear cutter shaft 27 are fixedly provided with second connecting plates 43, and the first connecting plate 42 is fixedly connected with the corresponding second connecting plates 43 through bolts and nuts, the upper end of the connecting box 3 is provided with a third oil filling port 44, one side of the lower end of the connecting box 3 is provided with a third oil discharge port 45, the third oil filling port 44 and the outer wall of the third oil discharge port 45 are connected with a third sealing cover in a threaded manner, a plurality of third cooling fins 52 are fixedly embedded in one side wall of the connecting box 3, a sixth limiting cylinder 53 is fixedly arranged on the outer wall of one side of the connecting box 3, a sixth sealing ring is fixedly arranged in the sixth limiting cylinder 53, and the outer wall of the third transmission shaft 41 is sleeved with the sixth sealing ring.

By adopting the scheme of the invention, the lubricating oil can be injected into the gearbox 1, the transmission case 2 and the connecting case 3, so that the internal gears and bearings can be soaked in the lubricating oil, the gears and the bearings can be lubricated, the cooling fins can be arranged to dissipate the heat of the lubricating oil, the rotary tillage depth can be adjusted by controlling the extension and retraction of the hydraulic cylinder 39, the adjustment is more convenient, the rotary tillage can be performed on the area at the lower end of the transmission case 2 by using the milling rotary blade 31, the blind area of rotary tillage and stubble cleaning can be eliminated, and the lubricating oil can be conveniently replaced.

Example two:

referring to fig. 1, 2 and 8, for the fixing plate 4, mounting grooves 46 are fixedly formed on the fixing plate 4, the mounting grooves 46 are in a concave structure, and mounting holes are formed on two side walls of the mounting grooves 46; for the rotating shaft 11, a plurality of stirring blades 47 are fixedly arranged on the outer walls of the two ends of the rotating shaft 11.

Through the scheme of the invention, the mounting groove 46 and the mounting hole can facilitate the mounting and fixing of the fixing plate 4 and the agricultural machinery, and the stirring blade 47 can stir the lubricating oil in the gearbox 1, so that the heat distribution of the lubricating oil is uniform.

Example three:

referring to fig. 1, for the gearbox 1, a first access opening is formed in the front surface of the gearbox 1, and a first sealing plate 48 is fixedly arranged on the outer wall of the access opening through bolts; for the transmission case 2, a second access hole is formed in the front face of the transmission case 2, and a second sealing plate 49 is fixedly arranged on the outer wall of the access hole through a bolt; for the first sealing plate 48 and the second sealing plate 49, sealing gaskets are fixedly arranged on the inner walls of the first sealing plate 48 and the second sealing plate 49.

Through the scheme of the invention, the interiors of the gearbox 1 and the gearbox 2 can be overhauled by opening the first sealing plate 48 and the second sealing plate 49, and the sealing performance of the first sealing plate 48 and the second sealing plate 49 can be improved by the sealing gaskets, so that the leakage of lubricating oil is reduced.

Example four:

referring to fig. 1 and 6, for the pear cutter assembly, the pear cutter assembly includes pear cutter holders 50, the pear cutter holders 50 are all fixed on the outer wall of the pear cutter shaft 27, and pear cutters 51 are all fixedly arranged on the pear cutter shaft 27 through bolts and nuts.

Through the scheme of the invention, the damaged pear knife 51 can be conveniently detached and replaced.

Example five:

referring to fig. 1, 3 and 6, for the milling cutter 31, the milling cutter 31 is disposed in a spiral structure; for the bougie 51, the bougie 51 is configured in an L-shaped configuration.

By adopting the scheme, the effects of rotary tillage and stubble cleaning can be effectively improved.

For the convenience of understanding the technical solutions of the present invention, the following detailed description will be made on the working principle or the operation mode of the present invention in the practical process.

In practical application, the cross shaft 7 can drive the input shaft 6 to rotate, and further can drive the second bevel gear 12, the rotating shaft 11 and the third bevel gear 13 to rotate, and further can drive the fourth bevel gear 16 and the first transmission shaft 15 to rotate, the first transmission shaft 15 can drive the sliding barrel 21 to rotate, and further can drive the sixth bevel gear 28 and the pear cutter shaft 27 to rotate, and can drive the seventh bevel gear 32, the second transmission shaft 30 and the milling cutter blade 31 to rotate through the sixth bevel gear 28 to carry out rotary tillage and stubble cleaning on the area below the transmission case 2, the pear cutter shaft 27 can drive the pear cutter 51 to rotate, the protrusions 22 and the grooves 23 are matched to enable the first transmission shaft 15 to drive the sliding barrel 21 to rotate, meanwhile, the first transmission shaft 15 can stretch in the sliding barrel 21, and lubricating oil can be injected into the transmission case 1, the transmission case 2 and the connecting case 3, so that internal gears and bearings can be soaked in the lubricating oil, so as to lubricate the gear and the bearing, and the cooling fins can dissipate the heat of the lubricating oil, moreover, the rotary tillage depth can be adjusted by controlling the extension and contraction of the hydraulic cylinder 39, the adjustment is more convenient, the area at the lower end of the transmission case 2 can be rotary tillage by using the milling blade 31, thereby eliminating the blind area of rotary tillage and stubble cleaning and being convenient for replacing lubricating oil, the mounting groove 46 and the mounting hole are convenient for mounting and fixing the fixing plate 4 and the agricultural machinery, the stirring blade 47 can stir the lubricating oil in the gearbox 1, thereby can make lubricating oil heat subsection comparatively even, open first closing plate 48 and second closing plate 49 and can overhaul gearbox 1 and transmission case 2 inside, sealed the leakproofness that can increase first closing plate 48 and second closing plate 49 department reduces revealing of lubricating oil, can be convenient for moreover dismantle and change the pears sword 51 of damage.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.