Controllable corn flail knife mechanism

Abstract

The utility model discloses a controllable corn flail knife mechanism which comprises a gear box assembled on a corn kernel harvester or a corn ear picking harvester. The flail knife mechanism is used for cutting off corn stalks, the clutch mechanism is used for controlling the working state of the flail knife mechanism, the returning mechanism is used for being matched with the flail knife mechanism to smash and return the corn stalks to the field, the flail knife mechanism is assembled at the output end of the gear box, and the clutch mechanism is arranged between the flail knife mechanism and the gear box. The header has the advantages that the structure is simple, the flail knife mechanism is arranged to be matched with the clutch mechanism, the working mode of the flail knife mechanism can be adjusted, and therefore the header can be suitable for a corn kernel harvester or a corn ear picking harvester. And the working state of the flail knife mechanism is adjusted according to different working conditions, so that the harvesting efficiency of the harvester is effectively improved, and the gearbox is prevented from being damaged due to overhigh pressure.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery devices, in particular to a controllable corn flinger mechanism. Background Art

[0002] In the prior art, a corn harvester is an agricultural machine that mechanically completes multiple operations of corn picking, stacking, and returning the stalks to the field at one time when the corn is ripe. The existing corn cutting platform is respectively equipped with an ear picking gearbox and a straw returning device, and the corn harvester straw returning devices include: 1. a swing hammer type returner, which has high power consumption and high fuel consumption. The shaft is too long and is limited to four rows or less, and the cost of use is relatively high; 2. a roller type, which has a short service life and easy-to-wear blades. Frequent sharpening greatly increases the labor intensity and cost of use of the user; 3. a swing knife type, most of which are installed on imported more expensive corn harvesters with a small market share. The corner box structure is above the swing knife blade and has a complex structure. The swing knife type straw returning device is separately installed at the bottom of the cutting platform. This straw returning device has a complex structure and transmits power through a series of external mechanisms. It has low reliability, is difficult to manufacture and maintain, has high maintenance costs, low production efficiency, high power consumption, and poor use effect.

[0003] The Chinese utility model patent with application number: 201921115190.6 discloses a corn harvester blade-flinging device, including a stem pulling platform shell, a stem pulling roller and a second gear, one end of the second gear is fixed to the outer side of the stem pulling roller, and the second gear is meshed with the transmission device. A rotating shaft shell is provided on one side of the lower end of the stem pulling platform shell, and a rotating shaft is provided in the rotating shaft shell. The upper end of the rotating shaft is rotatably connected to the inner side of the stem pulling platform shell through a mounting seat, the lower end of the rotating shaft is fixedly connected to the blade, and the outer side of the upper end of the rotating shaft is sleeved with a first bevel gear, the first bevel gear is meshed with a second bevel gear arranged on one side of it, the second bevel gear is fixed to one end of the transmission shaft, and the other end of the transmission shaft is fixedly connected to an inner rotating rod, and the outer side of the inner rotating rod is fixedly connected to the first gear. However, the structure of the blade-flinging device of this corn harvester is relatively complex. It transmits power through a series of external mechanisms and has low reliability. It can only be used for special corn ear harvesters and cannot be used for corn grain harvesters. The working mode of the blade-flinging mechanism cannot be adjusted, the production efficiency is low, and the power consumption is high. When the blade-flinging device is working, it may cause excessive pressure in the gearbox and cause damage. Utility Model Content

[0004] The purpose of the utility model is to provide a controllable corn flinging knife mechanism.

[0005] In order to achieve the above purpose, the technical solution proposed by the utility model is:

[0006] A controllable corn flinger mechanism includes a gear box, which is mounted on a corn grain harvester or a corn ear harvester. It also includes a flinger mechanism for cutting corn stalks, a clutch mechanism for controlling the working state of the flinger mechanism, and a returning mechanism for cooperating with the flinger mechanism to break up the corn stalks and return them to the field. The flinger mechanism is mounted on the output end of the gear box, the clutch mechanism is arranged between the flinger mechanism and the gear box, and the returning mechanism is arranged on the side of the flinger mechanism away from the gear box.

[0007] The blade-flinging mechanism includes a mounting beam, a mounting shell, a transmission assembly and a blade-flinging assembly. The mounting beam is arranged at the output end of the gear box and is fixedly connected to the gear box. The mounting shell is arranged at an end of the mounting beam away from the gear box and is fixedly connected to the mounting beam. The transmission assembly is arranged inside the mounting shell, and the blade-flinging assembly corresponding to the transmission assembly is assembled at the bottom of the mounting shell.

[0008] The transmission assembly includes a transmission shaft, a blade-flinging shaft and a mounting sleeve. The transmission shaft is horizontally arranged on the upper inner side of the mounting shell and is rotatably connected to the mounting shell through a bearing. The end of the transmission shaft close to the mounting beam protrudes from the mounting shell and is transmission-connected to the output end of the gear box through a clutch mechanism. The blade-flinging shaft is tilted on the lower inner side of the mounting shell and is rotationally connected to the mounting shell. The upper end of the blade-flinging shaft is transmission-connected to one end of the transmission shaft through a transmission cone gear. The lower part of the blade-flinging shaft protrudes from the mounting shell. The mounting sleeve is arranged between the blade-flinging shaft and the mounting shell and is fixedly connected to the mounting shell. The blade-flinging shaft is rotationally assembled inside the mounting shell through the mounting sleeve.

[0009] The blade assembly includes a blade mounting ring, a blade base plate, a blade end and a cutting blade. The blade mounting ring is sleeved on the lower part of the blade shaft protruding from the mounting shell and is installed and connected to the blade shaft through a mounting key. The blade base plate is sleeved on the outside of the blade mounting ring. The blade end is arranged at the lower end of the blade shaft and is fixedly connected to the blade shaft. The blade end is located at the bottom of the blade base plate and is fixedly connected to the blade base plate. There are two groups of cutting blades, and the two groups of cutting blades are symmetrically arranged at the upper ends of the blade base plate and are fixedly linked to the blade base plate through mounting pins.

[0010] The clutch mechanism includes a clutch main shaft, a sleeve assembly and a switch assembly. The clutch main shaft is arranged at one end of the transmission shaft protruding from the mounting housing and is connected to the transmission shaft through a coupling. The clutch main shaft is located inside the mounting beam, the sleeve assembly is assembled on the side of the clutch main shaft, and the switch assembly is arranged on one side of the mounting beam corresponding to the sleeve assembly.

[0011] The shaft sleeve assembly includes a locating ring, a shaft sleeve spring and a connecting gear sleeve. The locating ring is arranged in the middle of the clutch main shaft and is fixedly connected to the clutch main shaft. The shaft sleeve spring is arranged on the outside of the clutch main shaft and is located between the locating ring and the coupling. The two ends of the shaft sleeve spring are respectively in contact with the locating ring and the coupling. The connecting gear sleeve is arranged at the end of the clutch main shaft away from the transmission shaft and is fixedly connected to the clutch main shaft. The clutch main shaft is transmission-connected to the output end of the gear box through the connecting gear sleeve.

[0012] The switch assembly includes a switch positioning seat, a switch handle and a switch shaft. The switch positioning seat is arranged on one side of the mounting beam and fixedly connected to the mounting beam. The switch handle is arranged on one side of the mounting beam corresponding to the switch positioning seat and is rotatably connected to the mounting beam. The switch shaft is arranged at the connection between the switch handle and the mounting beam and passes through the mounting beam and is rotatably connected to the mounting beam. The switch handle is fixedly connected to the switch shaft, and the switch handle is rotatably connected to the mounting beam through the switch shaft. The switch shaft is transmission-connected to the connecting gear sleeve through a connecting plate.

[0013] The switch positioning seat is provided with positioning holes corresponding to the switch handle. There are two groups of positioning holes. The two groups of positioning holes are arranged at intervals on the switch positioning seat and pass through the switch positioning seat. Limiting protrusions are provided on both sides of the switch positioning seat corresponding to the switch handle.

[0014] The field returning mechanism includes a field returning platform and a guide assembly. The field returning platform is arranged on a side of the mounting shell away from the mounting beam and is fixedly connected to the mounting shell. The guide assembly is assembled on one end of the field returning platform away from the mounting shell.

[0015] The guide assembly includes a mounting base, a guide base and an ear picking plate. The mounting base is arranged at one end of the field returning stand away from the mounting shell and is fixedly connected to the field returning stand. The guide base is arranged on a side of the mounting base away from the field returning stand and is fixedly connected to the mounting base. The ear picking plate is arranged on one side of the mounting base and is fixedly connected to the mounting base. The mounting base, the guide base and the ear picking plate are all bent plate structures and the three together constitute a shovel-shaped ear picking structure.

[0016] The beneficial effects of the utility model are:

[0017] The structure is simple, and it is equipped with a blade-flinging mechanism and a clutch mechanism. The working mode of the blade-flinging mechanism can be adjusted so that the harvesting table can be suitable for corn grain harvesters or corn ear harvesters. The working state of the blade-flinging mechanism can be adjusted according to different working conditions, which effectively improves the harvesting efficiency of the harvester and prevents damage to the gearbox due to excessive pressure. Power is transmitted through the built-in transmission structure, and the reliability is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the installation housing, transmission assembly and blade-flinging assembly of the utility model;

[0020] Figure 3 This is a cross-sectional view of the installation housing, transmission assembly and fling knife assembly of the utility model;

[0021] Figure 4 This is a schematic diagram of the cooperation between the clutch mechanism and the knife-flinging mechanism of the utility model;

[0022] Figure 5 This is a schematic diagram of the cooperation between the switch assembly and the knife-flinging mechanism of the utility model;

[0023] Figure 6 This is a schematic diagram of the cooperation between the switch positioning seat and the positioning hole of the utility model;

[0024] Figure 7 It is a schematic diagram of the cooperation between the field returning mechanism and the knife flinging mechanism of the utility model.

[0025] In the figure: 1. Gearbox; 2. Mounting beam; 3. Mounting housing; 4. Transmission shaft; 5. Fling blade shaft; 6. Mounting sleeve; 7. Fling blade mounting ring; 8. Fling blade base plate; 9. Fling blade end; 10. Cutting fling blade; 11. Clutch spindle; 12. Positioning ring; 13. Bushing spring; 14. Connecting gear sleeve; 15. Switch positioning seat; 16. Switch handle; 17. Switch shaft; 18. Positioning hole; 19. Returning to field stand; 20. Mounting base plate; 21. Guide base plate; 22. Ear picking board. DETAILED DESCRIPTION

[0026] The present invention is described in further detail below with reference to the accompanying drawings.

[0027] A controllable corn flinger mechanism includes a gear box 1, which is assembled on a corn grain harvester or a corn ear harvester, and also includes a flinger mechanism for cutting corn stalks, a clutch mechanism for controlling the working state of the flinger mechanism, and a returning mechanism for cooperating with the flinger mechanism to break up the corn stalks and return them to the field. The flinger mechanism is assembled at the output end of the gear box 1, the clutch mechanism is arranged between the flinger mechanism and the gear box 1, and the returning mechanism is arranged on the side of the flinger mechanism away from the gear box 1. The overall structural diagram of the utility model is shown as follows Figure 1 shown.

[0028] The blade-flinging mechanism includes a mounting beam 2, a mounting shell 3, a transmission assembly and a blade-flinging assembly. The mounting beam 2 is arranged at the output end of the gearbox 1 and is fixedly connected to the gearbox 1. The mounting shell 3 is arranged at the end of the mounting beam 2 away from the gearbox 1 and is fixedly connected to the mounting beam 2. The transmission assembly is arranged inside the mounting shell 3. The blade-flinging assembly is assembled at the bottom of the mounting shell 3 corresponding to the transmission assembly. The blade-flinging mechanism cooperates with the mounting beam 2, the mounting shell 3, the transmission assembly and the blade-flinging assembly to form a blade-flinging structure to break the cut stems and return them to the field during the harvesting operation. The mounting beam 2 is used to provide a mounting support for the mounting shell 3, and the mounting shell 3 is used to provide a mounting support for the transmission assembly. The transmission assembly is used to connect or disconnect with the gearbox 1 under the action of the clutch mechanism, thereby driving the blade-flinging assembly to work or stop. The blade-flinging assembly is used to break the cut stems and return them to the field during the harvesting operation. The schematic diagram of the cooperation between the mounting shell 3, the transmission assembly and the blade-flinging assembly of the utility model is shown in FIG. Figure 2 shown.

[0029] The transmission assembly includes a transmission shaft 4, a blade-flinging shaft 5 and a mounting sleeve 6. The transmission shaft 4 is horizontally arranged on the upper inner side of the mounting shell 3 and is rotatably connected to the mounting shell 3 through a bearing. The end of the transmission shaft 4 close to the mounting beam 2 protrudes from the mounting shell 3 and is transmission-connected to the output end of the gear box 1 through a clutch mechanism. The blade-flinging shaft 5 is tiltedly arranged on the lower inner side of the mounting shell 3 and is rotationally connected to the mounting shell 3. The upper end of the blade-flinging shaft 5 is transmission-connected to one end of the transmission shaft 4 through a transmission cone wheel. The lower part of the blade-flinging shaft 5 protrudes from the mounting shell 3. The mounting sleeve 6 is arranged between the blade-flinging shaft 5 and the mounting shell 3 and is fixedly connected to the mounting shell 3. 5 is rotatably assembled in the interior of the mounting housing 3 through the mounting sleeve 6. The transmission assembly cooperates with the transmission shaft 4, the flinging blade shaft 5 and the mounting sleeve 6. Under the action of the clutch mechanism, it is connected or disconnected with the gear box 1 to drive the flinging blade assembly to work or stop. Among them, the transmission shaft 4 is used to connect with the clutch mechanism and be in transmission connection with the flinging blade shaft 5. The flinging blade shaft 5 is used to provide mounting support for the flinging blade assembly and drive the flinging blade assembly to rotate or stop under the action of the transmission shaft 4. The mounting sleeve 6 is used to install the flinging blade shaft 5 in the mounting housing 3 and ensure the installation stability of the flinging blade shaft 5. The mounting housing 3 of the utility model cooperates with the transmission assembly and the flinging blade assembly as shown in the cross-sectional view. Figure 3 shown.

[0030] The fling knife assembly includes a fling knife mounting ring 7, a fling knife base plate 8, a fling knife end 9 and a cutting fling knife 10. The fling knife mounting ring 7 is sleeved on the fling knife shaft 5 protruding from the lower part of the mounting shell 3 and is installed and connected to the fling knife shaft 5 through a mounting key. The fling knife base plate 8 is sleeved on the outer side of the fling knife mounting ring 7. The fling knife end 9 is arranged at the lower end of the fling knife shaft 5 and is fixedly connected to the fling knife shaft 5. The fling knife end 9 is located at the bottom of the fling knife base plate 8 and is fixedly connected to the fling knife base plate 8. There are two groups of cutting fling knives 10. The two groups of cutting fling knives 10 are symmetrically arranged at the upper ends of the fling knife base plate 8 and are fixedly linked to the fling knife base plate 8 through mounting pins. The blade assembly cooperates with the blade mounting ring 7, the blade base plate 8, the blade end 9 and the cutting blade 10 to break up the cut stems and return them to the field during the harvesting operation. The blade mounting ring 7 is used as a mounting structure on the blade shaft 5, thereby installing and connecting the blade base plate 8 to the blade shaft 5. The blade base plate 8 is used to provide mounting support for the cutting blade 10 and drive the cutting blade 10 to rotate under the action of the blade shaft 5. The blade end 9 is used to realize the mounting connection between the blade base plate 8 and the blade shaft 5. The cutting blade 10 is used to break up the cut stems and return them to the field under the drive of the blade base plate 8.

[0031] The clutch mechanism includes a clutch main shaft 11, a sleeve assembly and a switch assembly. The clutch main shaft 11 is arranged at one end of the transmission shaft 4 protruding from the mounting housing 3 and is connected to the transmission shaft 4 through a coupling. The clutch main shaft 11 is located inside the mounting beam 2, and the sleeve assembly is assembled on the side of the clutch main shaft 11. The switch assembly is configured on one side of the mounting beam 2 corresponding to the sleeve assembly. The clutch mechanism realizes the connection or disconnection between the blade-flinging mechanism and the gear box 1 through the clutch main shaft 11, the sleeve assembly and the switch assembly, thereby controlling the working state of the blade-flinging mechanism. The clutch main shaft 11 is used as the main structure of the clutch, thereby providing installation support for the sleeve assembly. The sleeve assembly is used to realize the connection and disconnection between the clutch main shaft 11 and the output end of the gear box 1 under the action of the switch assembly. The switch assembly is used to adjust the position of the sleeve assembly, thereby realizing the connection and disconnection between the clutch main shaft 11 and the output end of the gear box 1. The schematic diagram of the clutch mechanism and the blade-flinging mechanism in the utility model is shown in FIG. Figure 4 shown.

[0032] The shaft sleeve assembly includes a locating ring 12, a shaft sleeve spring 13 and a connecting gear sleeve 14. The locating ring 12 is arranged in the middle of the clutch main shaft 11 and is fixedly connected to the clutch main shaft 11. The shaft sleeve spring 13 is sleeved on the outside of the clutch main shaft 11 and is located between the locating ring 12 and the coupling. The two ends of the shaft sleeve spring 13 are respectively in contact with the locating ring 12 and the coupling. The connecting gear sleeve 14 is arranged at the end of the clutch main shaft 11 away from the transmission shaft 4 and is fixedly connected to the clutch main shaft 11. The clutch main shaft 11 is connected to the output end of the gear box 1 through the connecting gear sleeve 14. The shaft sleeve assembly is connected to the output end of the gear box 1 through the locating ring 12 and the shaft sleeve spring 13. The sleeve spring 13 and the connecting gear sleeve 14 cooperate to realize the connection and disconnection between the clutch main shaft 11 and the output end of the gear box 1, wherein the positioning ring 12 is used as a mounting structure on the clutch main shaft 11, thereby meeting the installation requirements between the sleeve spring 13 and the clutch main shaft 11, the sleeve spring 13 is used to provide elastic support for the clutch main shaft 11 through the positioning ring 12, and the connecting gear sleeve 14 is used as the mounting connection structure of the clutch main shaft 11 close to one end of the gear box 1, and the connection and disconnection between the clutch main shaft 11 and the output end of the gear box 1 can be achieved by adjusting the position of the connecting gear sleeve 14.

[0033] The switch assembly includes a switch positioning seat 15, a switch handle 16 and a switch shaft 17. The switch positioning seat 15 is arranged on one side of the mounting beam 2 and is fixedly connected to the mounting beam 2. The switch handle 16 is arranged on one side of the mounting beam 2 corresponding to the switch positioning seat 15 and is rotatably connected to the mounting beam 2. The switch shaft 17 is arranged at the connection between the switch handle 16 and the mounting beam 2 and passes through the mounting beam 2 and is rotatably connected to the mounting beam 2. The switch handle 16 is fixedly connected to the switch shaft 17. The switch handle 16 is rotatably connected to the mounting beam 2 through the switch shaft 17. The switch shaft 17 is transmission-connected to the connecting gear sleeve 14 through the connecting plate. The switch assembly cooperates with the switch positioning seat 15, the switch handle 16 and the switch shaft 17. The position of the connecting gear sleeve 14 is adjusted to achieve connection and disconnection between the clutch main shaft 11 and the output end of the gear box 1, wherein the switch positioning seat 15 is used to position the switch handle 16, and the switch handle 16 is used to adjust the position of the connecting gear sleeve 14 through the switch shaft 17. The switch shaft 17 is used to provide installation support for the switch handle 16. The switch handle 16 has been installed on the mounting beam 2, and the switch shaft 17 can drive the connecting gear sleeve 14 to move horizontally through the connecting plate when rotating, thereby adjusting the position of the connecting gear sleeve 14, thereby achieving connection and disconnection between the clutch main shaft 11 and the output end of the gear box 1. The schematic diagram of the switch assembly of the utility model and the knife-flinging mechanism is shown in FIG. Figure 5 shown.

[0034] The switch locating seat 15 is provided with a locating hole 18 corresponding to the switch handle 16. There are two groups of locating holes 18. The two groups of locating holes 18 are arranged at intervals on the switch locating seat 15 and pass through the switch locating seat 15. Limiting protrusions are provided on both sides of the switch locating seat 15 corresponding to the switch handle 16. Among them, the locating holes 18 are used as a positioning structure on the switch locating seat 15 to meet the positioning requirements of the switch handle 16. The two groups of locating holes 18 correspond to the opening and closing gears of the clutch mechanism respectively. When the switch handle 16 is in the opening gear, the switch shaft 17 drives the connecting gear sleeve 14 to move toward the output end of the gear box 1 through the connecting plate, and the connecting gear sleeve 14 is connected to the output end of the gear box 1, thereby realizing the transmission connection between the output end of the gear box 1 and the clutch main shaft 11. The gear box 1 drives the swinging knife shaft 5 to rotate through the clutch main shaft 11 and the transmission shaft 4, thereby driving the swinging knife to work. When the switch wrench is in the closing gear, the switch shaft 17 drives the connecting gear sleeve 14 to move toward the output end of the gear box 1 through the connecting plate. The connecting gear sleeve 14 is connected to the output end of the gear box 1, thereby realizing the transmission connection between the output end of the gear box 1 and the clutch main shaft 11. The gear box 1 drives the swinging knife shaft 5 to rotate through the clutch main shaft 11 and the transmission shaft 4, thereby driving the swinging knife to work. The shaft 17 drives the connecting gear sleeve 14 to move in the direction away from the output end of the gear box 1 through the connecting plate, and the connecting gear sleeve 14 is disengaged from the output end of the gear box 1, so that the output end of the gear box 1 is disconnected from the clutch main shaft 11, and the swing knife stops working. When the switch handle 16 needs to be positioned, the bolt can be passed through the switch handle 16 and the corresponding positioning hole 18 to achieve the positioning of the switch handle 16 and put the swing knife in the open or closed state. The limiting protrusion is used as a limiting structure on the switch positioning seat 15, so as to achieve relative limitation between the switch handle 16 and the switch positioning seat 15. When the switch handle 16 is in the closed gear position, the sleeve spring 13 is in a compressed state and provides elastic support for the connecting gear sleeve 14, which helps to reset the connecting gear sleeve 14, thereby adjusting the switch handle 16 back to the open gear position. The schematic diagram of the switch positioning seat 15 and the positioning hole 18 of the utility model is shown in Figure 6 shown.

[0035] The returning-to-field mechanism includes a returning-to-field stand 19 and a guide assembly. The returning-to-field stand 19 is arranged on a side of the mounting shell 3 away from the mounting beam 2 and is fixedly connected to the mounting shell 3. The guide assembly is assembled on the end of the returning-to-field stand 19 away from the mounting shell 3. The returning-to-field mechanism cooperates with the returning-to-field stand 19 and the guide assembly to form a returning-to-field cutting platform structure at the end of the flinging knife mechanism. The returning-to-field stand 19 is used to provide installation support for the guide assembly, and the guide assembly is used to guide the corn stalks. The schematic diagram of the cooperation between the returning-to-field mechanism and the flinging knife mechanism of the utility model is shown in FIG. Figure 7 shown.

[0036] The guide assembly includes a mounting base 20, a guide base 21 and an ear picking plate 22. The mounting base 20 is arranged at one end of the field returning stand 19 away from the mounting shell 3 and is fixedly connected to the field returning stand 19. The guide base 21 is arranged on the side of the mounting base 20 away from the field returning stand 19 and is fixedly connected to the mounting base 20. The ear picking plate 22 is arranged on one side of the mounting base 20 and is fixedly connected to the mounting base 20. The mounting base 20, the guide base 21 and the ear picking plate 22 are all bent plate structures and the three together constitute a shovel-shaped ear picking structure. The guide assembly cooperates with the mounting base 20, the guide base 21 and the ear picking plate 22 to constitute an ear picking structure while guiding the corn stalks. The mounting base 20 is used to provide mounting support for the guide base 21, the guide base 21 is used to guide the corn stalks, and the ear picking plate 22 is used to perform ear picking operations on corn.

[0037] Working principle:

[0038] This controllable corn flinger mechanism is suitable for various harvesting machines. When used on a corn grain harvester, the flinger mechanism is connected to the gear box 1 through a clutch mechanism to start the flinger mechanism. The flinger mechanism cuts the corn stalks, which can meet the defect that the stalks cannot be returned to the field during the direct harvesting of corn grains. During the harvesting operation, the rotating cutting flinger 10 can crush the cut stalks and return them to the field, realizing multiple functions in one operation and improving the harvesting efficiency; when used on a corn ear picking harvester, the flinger mechanism is disconnected from the gear box 1 through a clutch mechanism to turn off the flinger mechanism, and the gear box 1 only drives the stalk chopper on the machine to work, which can reduce the phenomenon of excessive working pressure of the gear box 1 caused by the opening of the flinger mechanism, and further protect the gear box 1.

[0039] The beneficial effects of the present invention are that it has a simple structure, is equipped with a blade-flinging mechanism that cooperates with a clutch mechanism, and can adjust the working mode of the blade-flinging mechanism so that the cutting table can be suitable for a corn grain harvester or a corn ear harvester. The working state of the blade-flinging mechanism can be adjusted according to different working conditions, effectively improving the harvesting efficiency of the harvester, preventing damage to the gearbox due to excessive pressure, and transmitting power through a built-in transmission structure with high reliability.

[0040] The above describes an embodiment of the present invention in detail. However, the content is only a preferred embodiment of the present invention and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A controllable corn flinger mechanism, comprising a gear box (1), wherein the gear box (1) is mounted on a corn grain harvester or a corn ear harvester, and is characterized in that: It also includes a knife-fling mechanism for cutting corn stalks, a clutch mechanism for controlling the working state of the knife-fling mechanism, and a field-returning mechanism for cooperating with the knife-fling mechanism to break up the corn stalks and return them to the field. The knife-fling mechanism is assembled at the output end of the gear box (1), the clutch mechanism is arranged between the knife-fling mechanism and the gear box (1), and the field-returning mechanism is arranged on a side of the knife-fling mechanism away from the gear box (1).

2. A controllable corn flinging mechanism according to claim 1, characterized in that: The blade-flinging mechanism comprises a mounting beam (2), a mounting housing (3), a transmission assembly, and a blade-flinging assembly. The mounting beam (2) is arranged at the output end of the gear box (1) and is fixedly connected to the gear box (1). The mounting housing (3) is arranged at one end of the mounting beam (2) away from the gear box (1) and is fixedly connected to the mounting beam (2). The transmission assembly is arranged inside the mounting housing (3), and the blade-flinging assembly is assembled at the bottom of the mounting housing (3) corresponding to the transmission assembly.

3. A controllable corn flinging mechanism as claimed in claim 2, characterized in that: The transmission assembly comprises a transmission shaft (4), a blade-flinging shaft (5) and a mounting sleeve (6); the transmission shaft (4) is horizontally arranged on the inner side of the upper portion of the mounting shell (3) and is rotatably connected to the mounting shell (3) through a bearing; one end of the transmission shaft (4) close to the mounting beam (2) protrudes from the mounting shell (3) and is transmission-connected to the output end of the gear box (1) through a clutch mechanism; the blade-flinging shaft (5) is obliquely arranged on the inner side of the lower portion of the mounting shell (3) and is rotationally connected to the mounting shell (3); the upper end of the blade-flinging shaft (5) is transmission-connected to one end of the transmission shaft (4) through a transmission cone gear; the lower portion of the blade-flinging shaft (5) protrudes from the mounting shell (3); the mounting sleeve (6) is arranged between the blade-flinging shaft (5) and the mounting shell (3) and is fixedly connected to the mounting shell (3); the blade-flinging shaft (5) is rotationally assembled inside the mounting shell (3) through the mounting sleeve (6).

4. A controllable corn flinger mechanism as claimed in claim 3, characterized in that: The blade assembly comprises a blade mounting ring (7), a blade base plate (8), a blade end (9) and a cutting blade (10). The blade mounting ring (7) is sleeved on the lower part of the blade shaft (5) protruding from the mounting shell (3) and is mounted and connected to the blade shaft (5) through a mounting key. The blade base plate (8) is sleeved on the outer side of the blade mounting ring (7). The blade end (9) is arranged at the lower end of the blade shaft (5) and is fixedly connected to the blade shaft (5). The blade end (9) is located at the bottom of the blade base plate (8) and is fixedly connected to the blade base plate (8). The cutting blade (10) is provided with two groups. The two groups of cutting blades (10) are symmetrically arranged at the upper ends of the blade base plate (8) and are fixedly linked to the blade base plate (8) through mounting pins.

5. A controllable corn flinging mechanism as claimed in claim 4, characterized in that: The clutch mechanism comprises a clutch main shaft (11), a shaft sleeve assembly and a switch assembly. The clutch main shaft (11) is arranged at one end of the transmission shaft (4) protruding from the mounting housing (3) and is connected to the transmission shaft (4) through a coupling. The clutch main shaft (11) is located inside the mounting beam (2). The shaft sleeve assembly is assembled on the side of the clutch main shaft (11). The switch assembly is arranged on one side of the mounting beam (2) corresponding to the shaft sleeve assembly.

6. A controllable corn flinger mechanism as claimed in claim 5, characterized in that: The shaft sleeve assembly comprises a positioning ring (12), a shaft sleeve spring (13) and a connecting gear sleeve (14); the positioning ring (12) is arranged at the middle of the clutch main shaft (11) and is fixedly connected to the clutch main shaft (11); the shaft sleeve spring (13) is sleeved on the outside of the clutch main shaft (11) and is located between the positioning ring (12) and the coupling; the two ends of the shaft sleeve spring (13) are respectively in contact with the positioning ring (12) and the coupling; the connecting gear sleeve (14) is arranged at one end of the clutch main shaft (11) away from the transmission shaft (4) and is fixedly connected to the clutch main shaft (11); the clutch main shaft (11) is transmission-connected to the output end of the gear box (1) through the connecting gear sleeve (14).

7. A controllable corn flinger mechanism according to claim 6, characterized in that: The switch assembly comprises a switch positioning seat (15), a switch handle (16) and a switch rotating shaft (17); the switch positioning seat (15) is arranged on one side of the mounting beam (2) and fixedly connected to the mounting beam (2); the switch handle (16) is arranged on one side of the mounting beam (2) corresponding to the switch positioning seat (15) and is rotatably connected to the mounting beam (2); the switch rotating shaft (17) is arranged at the connection between the switch handle (16) and the mounting beam (2) and passes through the mounting beam (2) and is rotatably connected to the mounting beam (2); the switch handle (16) is fixedly connected to the switch rotating shaft (17); the switch handle (16) is rotatably connected to the mounting beam (2) via the switch rotating shaft (17); and the switch rotating shaft (17) is transmission-connected to the connecting gear sleeve (14) via a connecting plate.

8. The controllable corn flinging mechanism according to claim 7, characterized in that: The switch positioning seat (15) is provided with positioning holes (18) corresponding to the switch handle (16), and the positioning holes (18) are provided in two groups. The two groups of positioning holes (18) are arranged on the switch positioning seat (15) at intervals and pass through the switch positioning seat (15). Limiting protrusions are provided on both sides of the switch positioning seat (15) corresponding to the switch handle (16).

9. The controllable corn flinging mechanism according to claim 8, characterized in that: The field returning mechanism comprises a field returning stand (19) and a guide assembly, wherein the field returning stand (19) is arranged on a side of the mounting shell (3) away from the mounting beam (2) and is fixedly connected to the mounting shell (3), and the guide assembly is assembled on an end of the field returning stand (19) away from the mounting shell (3).

10. The controllable corn flinging mechanism according to claim 9, characterized in that: The guide assembly comprises a mounting base (20), a guide base (21) and an ear-picking plate (22); the mounting base (20) is arranged at one end of the returning-to-field stand (19) away from the mounting shell (3) and is fixedly connected to the returning-to-field stand (19); the guide base (21) is arranged at one side of the mounting base (20) away from the returning-to-field stand (19) and is fixedly connected to the mounting base (20); the ear-picking plate (22) is arranged at one side of the mounting base (20) and is fixedly connected to the mounting base (20); the mounting base (20), the guide base (21) and the ear-picking plate (22) are all bent plate-like structures and together constitute a shovel-shaped ear-picking structure.

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