An overload-proof and non-row-aligned corn harvesting header

Abstract

The invention discloses an anti-overload non-aligned corn harvesting header, comprising a mounting frame and a header frame, wherein the mounting frame is fixed to the back of the header frame, and a conveying auger is installed inside the header frame. The invention arranges multiple groups of ear picking units densely, performs angle planning on a straw chain and a paddle plate, reduces the space of a gear box, minimizes the distance between an ear picking frame 1 and an ear picking frame 2, saves the layout space, and makes the header row spacing smaller. A non-aligned design scheme is adopted, and corn harvesting with different types of row spacing can be successfully completed, the applicability is greatly improved, the harvesting speed is increased, and corn ears are not easy to fall when being transported. Each group of ear picking units has overload protection, and the conveying auger is equipped with overload protection separately. When any group of ear picking units is overloaded, the work of the other ear picking units will not be affected, the safety performance of the header is improved, and when a certain component is overloaded, the work of other components of the header will not be affected, the overload protection of the header and the conveying auger is realized, and the service life of the device is extended.

Description

Technical Field

[0001] The invention relates to the technical field of corn harvesters, in particular to an overload-proof and non-row-aligned corn harvesting header. Background Art

[0002] Corn harvesting header is an agricultural machine for picking and collecting corn ears. It uses the middle shield combination at the front end of the header to separate the corn stalks, so that the corn stalks enter the ear picking device in a certain order for mechanized corn harvesting. Due to regional differences, the row spacing of corn planting varies greatly, and customers will put forward various requirements for corn headers according to the corn varieties they grow.

[0003] my country has a vast land area, resulting in large regional differences in corn planting and a wide variety of corn varieties. In the south, the temperature is high, there is more grass in the corn fields, the corn rows are small, and the plant spacing is large. During the harvesting process, the cutter is often entangled with grass, the cutter is overloaded, and the machine is damaged. In the north, the land is fertile, the corn rows are large, and the plant spacing is small. During the harvest, the corn is relatively dry, resulting in serious grain loss. The existing corn harvester cutter cannot effectively prevent the cutter from being overloaded, which can cause the chain or drive shaft to break.

[0004] Therefore, an overload-proof non-row corn harvesting header is invented to solve the problem of header damage caused by overloading. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide an anti-overload and non-row corn harvesting header for addressing the deficiencies of the above-mentioned prior art. By densely arranging multiple groups of ear picking units and planning the angles of the straw chain and the straw plate, the space of the gear box is reduced, the distance between the ear picking frame one and the ear picking frame two is minimized, the layout space is saved, and the header row spacing is made smaller. By adopting a non-row design scheme, corn harvesting of different types of row spacings can be successfully completed. Each group of ear picking units has overload protection, and the conveying auger is separately equipped with overload protection. When any group of ear picking units is overloaded, it will not affect the work of the remaining ear picking units, thereby achieving the overload protection effect of the header and the conveying auger.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] An anti-overload misalignment corn harvesting header comprises a mounting frame and a header frame, wherein the mounting frame is fixed to the back of the header frame, a conveying auger is installed inside the header frame, a main input shaft is rotatably connected to the mounting frame, a left input shaft and a right input shaft are rotatably connected to the left and right sides of the header frame respectively, the main input shaft synchronously drives the left input shaft and the right input shaft through two first transmission members, a left hexagonal shaft and a right hexagonal shaft are rotatably connected to the two sides of the header frame respectively, and the left hexagonal shaft and the right hexagonal shaft are synchronously driven to the left input shaft and the right hexagonal shaft respectively through a second transmission member;

[0008] At least one of the left input shaft and the right input shaft is synchronously transmitted with the conveying auger through a third transmission member, and the conveying auger is equipped with a first safety clutch, which stops the conveying auger from rotating when the conveying auger is overloaded, so as to protect the conveying auger;

[0009] The front end of the cutting platform frame is equipped with an ear picking part, which is composed of four groups of ear picking units. The end of the ear picking unit is provided with a gear box transmission mechanism, and the gear box transmission mechanism is provided with a gear box access port. A meshing kit is installed through the two side walls of the gear box access port. The meshing kit is rotatably connected to the through hole of the side wall of the gear box access port. Two groups of second safety clutches are installed on the left hexagonal shaft and the right hexagonal shaft. The second safety clutch cooperates with the meshing kit to realize overload protection of the cutting platform;

[0010] A corn cob separation cover assembly is installed on the ear picking part to guide the harvesting of corn ears.

[0011] Preferably, the ear picking unit comprises an ear picking frame 1 and an ear picking frame 2, the ear picking frame 1 and the ear picking frame 2 are arranged in parallel, and the ear picking frame 1 and the ear picking frame 2 are both fixedly connected to the housing of the gear box transmission mechanism;

[0012] Both ends of the ear picking frame 1 and the ear picking frame 2 are provided with a set of sprocket input components, and the sprocket input components are composed of a first grain-pulling input sprocket and a second grain-pulling input sprocket, the first grain-pulling input sprocket is rotatably connected to one end of the ear picking frame 1 or the ear picking frame 2, the second grain-pulling input sprocket rotates relative to the ear picking frame 1 or the ear picking frame 2, a grain-pulling chain is chain-driven between the first grain-pulling input sprocket and the second grain-pulling input sprocket of the same sprocket input component, and shifting plates are evenly distributed on the grain-pulling chain, and the shifting plates and the transmission direction of the grain-pulling chain on which they are located form an angle of 45°, and the shifting plates on the same group of ear picking frame 1 or the ear picking frame 2 are parallel to each other;

[0013] The gearbox transmission mechanism includes a power transmission shaft 1 and a power transmission shaft 2, both of which are rotatably connected to the outer shell of the gearbox transmission mechanism, and the power transmission shaft 1 and the power transmission shaft 2 are synchronously transmitted through a coupling. A spur gear is also rotatably connected inside the gearbox access port, and the spur gear is meshed with the meshing kit for transmission. The power transmission shaft 1 or the power transmission shaft 2 in the gearbox transmission mechanism is meshed with the spur gear for transmission. Two sets of bevel gears are interference fit on the outside of the power transmission shaft 1 and the power transmission shaft 2. An inclined bevel gear group is provided inside the outer shell of the gearbox transmission mechanism. The bevel gear drives the first straw input sprocket through the bevel gear group, and the two adjacent sets of straw input sprockets are arranged at 90 degrees.

[0014] Preferably, the ear picking frame 1 and the ear picking frame 2 are slidably connected to a movable frame at one end away from the first straw pulling input sprocket, and the second straw pulling input sprocket is rotatably connected to the movable frame. Hydraulic cylinders are installed on the ear picking frame 1 and the ear picking frame 2, and the output end of the hydraulic cylinder is transmission-connected to the movable frame for adjusting the tightness of the straw pulling chain.

[0015] Preferably, the first safety clutch comprises an outer flange fixing seat and a first active core, and the outer flange fixing seat is coaxially sleeved on the outside of the first active core;

[0016] The first active core body is interference fit with the end shaft of the conveying auger;

[0017] Sixteen first slide grooves are evenly arranged on the outer wall of the first active core body, a first slide pin is slidably connected inside the first slide groove, a first spring is installed between the first slide pin and the bottom wall of the first slide groove, and a first slot corresponding to the end of the first slide pin is arranged on the inner wall of the outer flange fixing seat.

[0018] Preferably, the second safety clutch comprises an outer fixing seat and a second active core, and the outer fixing seat is coaxially sleeved on the outside of the second active core;

[0019] A hexagonal hole is passed through the axis of the second active core, and the inner diameter of the hexagonal hole matches the outer diameter of the left hexagonal shaft and the right hexagonal shaft. The left hexagonal shaft and the right hexagonal shaft are interference-fitted with the second active core. The outer fixing seat is installed at the end of the meshing kit. The meshing kit meshes with the spur gear for transmission and can drive the power transmission shaft 1.

[0020] 24 second slide grooves are evenly arranged on the outer side wall of the second active core body, a second slide pin is slidably connected inside the second slide groove, a second spring is installed between the second slide pin and the bottom wall of the second slide groove, and a second slot corresponding to the end of the second slide pin is arranged on the inner wall of the outer fixed seat.

[0021] Preferably, the straw dividing cover assembly includes a straight cylinder and a conical cylinder, and the straight cylinder and the conical cylinder are integrally formed by rotational molding. A through groove is opened on the top of the straight cylinder and the conical cylinder, so that the straw chain and the straw plate pass through the through groove, and one side of the straw chain passes through the inside of the straight cylinder to provide supporting force.

[0022] Preferably, the first transmission member, the second transmission member and the third transmission member are arranged as chains, and the main input shaft, the left input shaft, the right input shaft, the left hexagonal shaft, the right hexagonal shaft and the connection between the end shaft rod of the conveying auger and the chain are equipped with sprockets.

[0023] Preferably, the left input shaft and the right input shaft are coaxially distributed, and the main input shaft is staggeredly distributed between the left input shaft and the right input shaft, and the main input shaft, the left input shaft and the right input shaft are all distributed in parallel.

[0024] Preferably, the spiral rows on the outer side of the conveying auger are distributed symmetrically, and discharge ports are provided on both sides of the cutting platform at positions corresponding to the conveying auger.

[0025] Preferably, the cutting platform frame is assembled on the vehicle body through a mounting frame, and a driving wheel disc is sleeved on the outer side of the main input shaft, a driving motor is installed on the vehicle body, and the output shaft of the driving motor drives the driving wheel disc through a transmission belt.

[0026] The present invention has the following beneficial effects:

[0027] By arranging multiple groups of ear picking units densely, and planning the angles of the rice-pulling chains and the paddles, the gear box space is reduced, the distance between the ear picking frame 1 and the ear picking frame 2 is minimized, the layout space is saved, the row spacing of the header is smaller, and a non-row design scheme is adopted, which can smoothly complete the harvesting of corns with different row spacings, greatly improve the applicability, increase the harvesting speed, and prevent corn ears from falling when transporting. Each group of ear picking units has overload protection, and the transport auger is equipped with overload protection separately. When any group of ear picking units is overloaded, it will not affect the work of the other ear picking units, thereby improving the safety performance of the header. When a certain component is overloaded, it will not affect the work of other components of the header, thus realizing overload protection of the header and the transport auger, and extending the service life of the device.

[0028] The two first transmission members are used to synchronize the transmission with the left input shaft and the right input shaft, and the second transmission member is used to further transmit the left hexagonal shaft and the right hexagonal shaft, and at the same time, the conveying auger is rotated. The double-sided transmission mode is adopted to evenly share the load-bearing capacity, reduce the damage of the header caused by overload, and is convenient for maintenance;

[0029] The grain separation cover assembly cooperates with the ear picking unit to provide support force, realize stable conduction and transportation of corn cobs, further improve the impact resistance and wear resistance of the device, and reduce the problem of corn cob grains falling during corn harvesting. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A top view of the overall structure of the corn harvesting header provided by the present invention;

[0031] Figure 2 A rear view of the overall structure of the corn harvesting header provided by the present invention;

[0032] Figure 3 For the present invention Figure 2 A partial cross-sectional view of the structure shown in;

[0033] Figure 4 For the present invention Figure 2 A partial cross-sectional view of the structure shown in;

[0034] Figure 5 This is a structural distribution diagram of the ear picking part of the present invention;

[0035] Figure 6 This is a structural distribution diagram of the ear picking unit of the present invention;

[0036] Figure 7 It is a rear view of the ear picking unit of the present invention;

[0037] Figure 8 For the present invention Figure 7 A partial cross-sectional view of the structure shown in;

[0038] Fig. 9 is a side sectional view of a first safety clutch;

[0039] Fig.10 It is a side sectional view of the second safety clutch.

[0040] In the figure:

[0041] Mounting frame; 2. Cutting frame; 3. Conveying auger; 4. Main input shaft; 5. Left input shaft; 6. Right input shaft; 7. Ear picking unit; 8. Grain separation cover assembly; 9. First transmission member; 10. Third transmission member; 11. First safety clutch; 12. Second transmission member; 13. Left hexagonal shaft; 14. Second safety clutch; 15. Engagement kit; 16. Right hexagonal shaft; 17. Ear picking unit; 18. Spur gear; 19. Power transmission shaft 1; 20. Coupling; 21. Power transmission shaft 2; 22. Bevel gear; 23. Moving frame; 24. Bevel gear set; 25. Grain removal chain; 26. Paddle; 27. Hydraulic cylinder; 28. First grain removal input sprocket; 29. ​​Second grain removal input sprocket; 30. Driving wheel; 31. Grain removal frame 1; 32. Grain removal frame 2;

[0042] 801, straight tube; 802, tapered tube; 803, through slot;

[0043] 111, outer flange fixing seat; 112, first active core; 113, first spring; 114, first sliding pin;

[0044] 141. External fixed seat; 142. Second active core; 143. Second spring; 144. Second sliding pin. DETAILED DESCRIPTION

[0045] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific preferred embodiments.

[0046] In the description of the present invention, it should be understood that the terms "left side", "right side", "upper part", "lower part" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. "First", "second" and the like do not indicate the importance of the components, and therefore cannot be understood as limiting the present invention. The specific dimensions used in this embodiment are only for illustrating the technical solution, and do not limit the scope of protection of the present invention.

[0047] like Figure 1-10 As shown, an anti-overload misalignment corn harvesting header comprises a mounting frame 1 and a header frame 2, wherein the mounting frame 1 is fixed to the back of the header frame 2, a conveying auger 3 is installed inside the header frame 2, a main input shaft 4 is rotatably connected to the mounting frame 1, a left input shaft 5 and a right input shaft 6 are rotatably connected to the left and right sides of the header frame 2, the main input shaft 4 synchronously drives the left input shaft 5 and the right input shaft 6 through two first transmission members 9, a left hexagonal shaft 13 and a right hexagonal shaft 16 are rotatably connected to the two sides of the header frame 2, and the left hexagonal shaft 13 and the right hexagonal shaft 16 are synchronously driven to the left input shaft 5 and the right hexagonal shaft 16 through the second transmission member 12 respectively;

[0048] At least one of the left input shaft 5 and the right input shaft 6 is synchronously transmitted with the conveying auger 3 through a third transmission member 10. The conveying auger 3 is equipped with a first safety clutch 11, which stops the conveying auger 3 from rotating when the conveying auger 3 is overloaded, so as to protect the conveying auger 3.

[0049] The front end of the cutting frame 2 is provided with an ear picking unit 7, which is composed of four groups of ear picking units 17;

[0050] As a preferred embodiment of the ear picking unit 17 in the present invention:

[0051] The ear picking unit 17 includes an ear picking frame 1 31 and an ear picking frame 2 32, the ear picking frame 1 31 and the ear picking frame 2 32 are arranged in parallel, and the ear picking frame 1 31 and the ear picking frame 2 32 are both fixedly connected to the housing of the gear box transmission mechanism;

[0052] A set of sprocket input components are provided at both ends of the ear picking frame 1 31 and the ear picking frame 2 32, and the sprocket input components are composed of a first grain-pulling input sprocket 28 and a second grain-pulling input sprocket 29. The first grain-pulling input sprocket 28 is rotatably connected to one end of the ear picking frame 1 31 or the ear picking frame 2 32, and the second grain-pulling input sprocket 29 rotates relative to the ear picking frame 1 31 or the ear picking frame 2 32. A grain-pulling chain 25 is chain-driven between the first grain-pulling input sprocket 28 and the second grain-pulling input sprocket 29 of the same sprocket input component, and shifting plates 26 are evenly distributed on the grain-pulling chain 25, and the shifting plates 26 and the grain-pulling chain 25 on which they are located form a 45° angle in transmission direction, and the shifting plates 26 on the same group of ear picking frames 1 31 or the ear picking frames 2 32 are parallel to each other;

[0053] The gearbox transmission mechanism includes a power transmission shaft 19 and a power transmission shaft 21, which are both rotatably connected to the outer shell of the gearbox transmission mechanism, and the power transmission shaft 19 and the power transmission shaft 21 are synchronously transmitted through a coupling 20. A spur gear 18 is also rotatably connected inside the gearbox access port, and the spur gear 18 is meshed with the meshing kit 15 for transmission. The power transmission shaft 19 or the power transmission shaft 21 in the gearbox transmission mechanism is meshed with the spur gear 18 for transmission. Two groups of bevel gears 22 are interference-fitted on the outer sides of the power transmission shaft 19 and the power transmission shaft 21. An inclined bevel gear set 24 is provided inside the outer shell of the gearbox transmission mechanism. The bevel gear 22 drives the first straw input sprocket 28 through the bevel gear set 24, and the two adjacent groups of straw input sprockets are arranged at 90 degrees, which can reduce the gearbox space, minimize the distance between the ear picking frame 1 31 and the ear picking frame 2 32, and the minimum harvesting row spacing can reach 350mm;

[0054] A gearbox transmission mechanism is provided at the end of the ear picking unit 17, and a gearbox access port is provided on the gearbox transmission mechanism. A meshing kit 15 is installed through the two side walls of the gearbox access port. The meshing kit 15 is rotatably connected to the through hole of the side wall of the gearbox access port. Two sets of second safety clutches 14 are installed on the left hexagonal shaft 13 and the right hexagonal shaft 16. The second safety clutch 14 cooperates with the meshing kit 15 to realize overload protection of the header.

[0055] As a preferred embodiment of the first safety clutch 11 in the present invention:

[0056] The first safety clutch 11 comprises an outer flange fixing seat 111 and a first active core 112, and the outer flange fixing seat 111 is coaxially sleeved on the outside of the first active core 112;

[0057] The first active core 112 is interference fit with the end shaft of the conveying auger 3;

[0058] Sixteen first slide grooves are evenly formed on the outer wall of the first active core 112, and a first slide pin 114 is slidably connected inside the first slide groove, and a first spring 113 is installed between the first slide pin 114 and the bottom wall of the first slide groove, and a first clamping groove corresponding to the end of the first slide pin 114 is formed on the inner wall of the outer flange fixing seat 111;

[0059] When the first active core 112 is rotated under force, the elastic force of the first spring 113 will give the first sliding pin 114 an outward thrust, and the first sliding pin 114 will contact the first slot, driving the outer flange fixing seat 111 to rotate; when the flange fixing seat is overloaded, the friction force between the first sliding pin 114 and the inner side of the outer flange fixing seat 111 is exceeded, the first spring 113 will be compressed, the first sliding pin 114 will separate from the first slot, the outer flange fixing seat 111 will stop rotating, and the first active core 112 will keep rotating, thereby realizing overload protection of the conveying auger 3;

[0060] As a preferred embodiment of the second safety clutch 14 in the present invention:

[0061] The second safety clutch 14 comprises an outer fixing seat 141 and a second active core 142, and the outer fixing seat 141 is coaxially sleeved on the outside of the second active core 142;

[0062] The axis of the second active core 142 is penetrated by a hexagonal hole, and the inner diameter of the hexagonal hole matches the outer diameter of the left hexagonal shaft 13 and the right hexagonal shaft 16. The left hexagonal shaft 13 and the right hexagonal shaft 16 are interference-fitted with the second active core 142. The outer fixing seat 141 is installed on the end of the meshing kit 15. The meshing kit 15 is meshed with the spur gear 18 for transmission and can drive the power transmission shaft 19.

[0063] 24 second slide grooves are evenly formed on the outer wall of the second active core 142, and a second slide pin 144 is slidably connected inside the second slide groove, and a second spring 143 is installed between the second slide pin 144 and the bottom wall of the second slide groove. A second clamping groove corresponding to the end of the second slide pin 144 is formed on the inner wall of the outer fixing seat 141;

[0064] When the second active core 142 is rotated by force, the elastic force of the second spring 143 will give the second sliding pin 144 an outward thrust, and the second sliding pin 144 will contact the second slot, driving the outer fixing seat 141 to rotate; when the outer fixing seat 141 is overloaded, the friction force between the second sliding pin 144 and the inner side of the outer fixing seat 141 is exceeded, the second spring 143 will be compressed, the second sliding pin 144 will separate from the second slot, the outer fixing seat 141 will stop rotating, and the second active core 142 will keep rotating, so as to realize the overload protection of the cutting platform;

[0065] A straw separation cover assembly 8 is installed on the ear picking part 7 to guide the harvesting of corn ears. The straw separation cover assembly 8 can separate the corn stalks;

[0066] Most of the existing header covers are made of sheet metal splicing or molded fiberglass, which causes great damage to corn during the harvesting process, resulting in a large number of corn cobs falling off and serious waste. As a preferred embodiment of the grain separation cover assembly 8 of the present invention:

[0067] The straw dividing cover assembly 8 includes a straight cylinder 801 and a conical cylinder 802, and the straight cylinder 801 and the conical cylinder 802 are integrally formed by rotational molding, and a through groove 803 is opened on the top of the straight cylinder 801 and the conical cylinder 802, so that the straw chain 25 and the straw plate 26 pass through the through groove 803, and one side of the straw chain 25 passes through the inside of the straight cylinder 801, which is used to provide support force to achieve stable conduction and transportation of corn cobs, further improve the impact resistance and wear resistance of the device, and can reduce the problem of corn cob grains falling during corn harvesting.

[0068] In order to realize the installation and maintenance of the reed chain 25, the installation structure of the tightness of the reed chain 25 is set to be adjustable in tightness, as follows:

[0069] The ends of the ear picking frame 1 31 and the ear picking frame 2 32 away from the first straw-picking input sprocket 28 are both slidably connected to the moving frame 23, and the second straw-picking input sprocket 29 is rotatably connected to the moving frame 23. The ear picking frame 1 31 and the ear picking frame 2 32 are equipped with a hydraulic cylinder 27, and the output end of the hydraulic cylinder 27 is transmission-connected to the moving frame 23 for adjusting the tightness of the straw-picking chain 25.

[0070] As an implementation mode of the transmission structure, the first transmission member 9, the second transmission member 12 and the third transmission member 10 are set as chains, and the main input shaft 4, the left input shaft 5, the right input shaft 6, the left hexagonal shaft 13, the right hexagonal shaft 16 and the end shaft of the conveying auger 3 are connected with sprockets at the connection between the chain;

[0071] In addition, the first transmission member 9, the second transmission member 12 and the third transmission member 10 are also configured as transmission belts, and the main input shaft 4, the left input shaft 5, the right input shaft 6, the left hexagonal shaft 13, the right hexagonal shaft 16 and the end shafts of the conveying auger 3 are connected to the transmission belts with pulleys.

[0072] In order to improve the transmission stability of the various components of the header, the left input shaft 5 and the right input shaft 6 are coaxially distributed, and the main input shaft 4 is staggered between the left input shaft 5 and the right input shaft 6, and the main input shaft 4, the left input shaft 5 and the right input shaft 6 are all distributed in parallel.

[0073] In order to facilitate the outward transportation of the harvested corn cobs, the spiral rows on the outer side of the conveying auger 3 are distributed symmetrically, and discharge ports are opened at the positions corresponding to the conveying auger 3 on both sides of the cutting platform frame 2.

[0074] The cutting platform frame 2 is assembled on the vehicle body through the mounting frame 1, and a driving wheel disc 30 is sleeved on the outer side of the main input shaft 4. A driving motor is installed on the vehicle body, and the output shaft of the driving motor drives the driving wheel disc through a transmission belt.

[0075] When the corn harvesting header is in use, the device is assembled on the vehicle body through the mounting frame 1, the ear picking part 7 is moved by the vehicle body, and the corn stalks are separated by the grain separation cover assembly 8 during the movement, the ear picking unit 17 collects and transports the corn cobs, and then the corn cobs are harvested and transported by the conveying auger 3; four groups of ear picking units 17 are provided, the transmission direction of the shifting plate 26 and the grain shifting chain 25 in which it is located is at a 45° angle, and the adjacent two groups of grain shifting input sprockets are arranged at 90°, which can reduce the gear box space, minimize the distance between the ear picking frame 1 31 and the ear picking frame 2 32, and the minimum harvesting row spacing can reach 350mm, and the corn cobs are not easy to fall when being transported. When harvesting intensively planted corn, 8 rows can be harvested at the same time. When harvesting corn with a relatively large row spacing, 4-6 rows can be harvested, so that the harvesting of corn in the opposite row can be realized, and the applicability is greatly improved, and the harvesting speed can be increased;

[0076] During operation, the main input shaft 4 synchronously drives the left input shaft 5 and the right input shaft 6 through the two first transmission members 9, and further drives the left hexagonal shaft 13 and the right hexagonal shaft 16 through the second transmission member 12, while rotating the conveying auger 3. The double-sided transmission mode is adopted to evenly share the load-bearing capacity and reduce the damage to the header caused by overload.

[0077] The ear picking units 17 are densely arranged, and each group of ear picking units 17 has overload protection. The conveying auger 3 is equipped with overload protection separately. When the first active core 112 is forced to rotate, the elastic force of the first spring 113 will give the first sliding pin 114 an outward thrust, and the first sliding pin 114 will contact the first slot, driving the outer flange fixing seat 111 to rotate; when the flange fixing seat is overloaded and exceeds the friction force between the first sliding pin 114 and the inner side of the outer flange fixing seat 111, the first spring 113 will be compressed, the first sliding pin 114 will separate from the first slot, and the outer flange fixing seat 111 will stop rotating. 2 keeps rotating to realize overload protection of the conveying auger 3. When the second active core 142 is rotated under force, the elastic force of the second spring 143 will give the second sliding pin 144 an outward thrust, and the second sliding pin 144 will contact the second clamping groove to drive the outer fixing seat 141 to rotate; when the outer fixing seat 141 is overloaded and exceeds the friction force between the second sliding pin 144 and the inner side of the outer fixing seat 141, the second spring 143 will be compressed, the second sliding pin 144 will separate from the second clamping groove, the outer fixing seat 141 will stop rotating, and the second active core 142 keeps rotating to realize overload protection of the cutting table, thereby improving the safety performance of the cutting table.

[0078] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. An anti-overload and non-row-misaligned corn harvesting header, comprising a mounting frame (1) and a header frame (2), wherein the mounting frame (1) is fixed to the back of the header frame (2), and a conveying auger (3) is installed inside the header frame (2), characterized in that: The mounting frame (1) is rotatably connected to a main input shaft (4); the left input shaft (5) and the right input shaft (6) are rotatably connected to the left and right sides of the cutting frame (2); the main input shaft (4) synchronously drives the left input shaft (5) and the right input shaft (6) through two first transmission members (9); the left hexagonal shaft (13) and the right hexagonal shaft (16) are rotatably connected to the two sides of the cutting frame (2); the left hexagonal shaft (13) and the right hexagonal shaft (16) are synchronously driven to the left input shaft (5) and the right input shaft (6) through the second transmission member (12); At least one of the left input shaft (5) and the right input shaft (6) is synchronously driven with the conveying auger (3) via a third transmission member (10); the conveying auger (3) is equipped with a first safety clutch (11) to stop the conveying auger (3) from rotating when the conveying auger (3) is overloaded, so as to protect the conveying auger (3); The front end of the cutting platform frame (2) is equipped with an ear picking part (7), which is composed of four groups of ear picking units (17). The end of the ear picking unit (17) is provided with a gear box transmission mechanism, and the gear box transmission mechanism is provided with a gear box access port. A meshing kit (15) is installed through the two side walls of the gear box access port. The meshing kit (15) is rotatably connected to the through hole of the side wall of the gear box access port. Two groups of second safety clutches (14) are installed on the left hexagonal shaft (13) and the right hexagonal shaft (16). The second safety clutch (14) cooperates with the meshing kit (15) to achieve overload protection of the cutting platform. A corn cob separation cover assembly (8) is installed on the ear picking part (7) to guide the harvesting of corn cobs; The ear picking unit (17) comprises an ear picking frame 1 (31) and an ear picking frame 2 (32), wherein the ear picking frame 1 (31) and the ear picking frame 2 (32) are arranged in parallel, and the ear picking frame 1 (31) and the ear picking frame 2 (32) are both fixedly connected to the outer shell of the gear box transmission mechanism; Both ends of the first ear picking frame (31) and the second ear picking frame (32) are provided with a set of sprocket input components, and the sprocket input components are composed of a first grain-moving input sprocket (28) and a second grain-moving input sprocket (29), the first grain-moving input sprocket (28) is rotatably connected to one end of the first ear picking frame (31) or the second ear picking frame (32), the second grain-moving input sprocket (29) rotates relative to the first ear picking frame (31) or the second ear picking frame (32), a grain-moving chain (25) is chain-driven between the first grain-moving input sprocket (28) and the second grain-moving input sprocket (29) of the same sprocket input component, shifting plates (26) are evenly distributed on the grain-moving chain (25), and the shifting plates (26) and the grain-moving chain (25) on which they are located form a 45° included angle in transmission direction, and the shifting plates (26) on the same group of the first ear picking frame (31) or the second ear picking frame (32) are parallel to each other; The gearbox transmission mechanism comprises a power transmission shaft 1 (19) and a power transmission shaft 2 (21), both of which are rotatably connected to the outer shell of the gearbox transmission mechanism, and the power transmission shaft 1 (19) and the power transmission shaft 2 (21) are synchronously driven through a coupling (20), a spur gear (18) is also rotatably connected inside the gearbox access port, and the spur gear (18) is meshed with a meshing kit (15) for transmission, the power transmission shaft 1 (19) or the power transmission shaft 2 (21) in the gearbox transmission mechanism is meshed with the spur gear (18) for transmission, the outer sides of the power transmission shaft 1 (19) and the power transmission shaft 2 (21) are both interference-fitted with two groups of bevel gears (22), an inclined bevel gear group (24) is provided inside the outer shell of the gearbox transmission mechanism, the bevel gear (22) drives a first reed-pulling input sprocket (28) through the bevel gear group (24), and two adjacent groups of reed-pulling input sprockets are arranged at 90 degrees.

2. The anti-overload misalignment corn harvesting header according to claim 1, characterized in that: The ends of the ear picking frame 1 (31) and the ear picking frame 2 (32) away from the first straw-moving input sprocket (28) are both slidably connected to a movable frame (23), and the second straw-moving input sprocket (29) is rotationally connected to the movable frame (23). The ear picking frame 1 (31) and the ear picking frame 2 (32) are equipped with a hydraulic cylinder (27), and the output end of the hydraulic cylinder (27) is transmission-connected to the movable frame (23) for adjusting the tightness of a straw-moving chain (25).

3. The anti-overload and non-row corn harvesting header according to claim 1, characterized in that: The first safety clutch (11) comprises an outer flange fixing seat (111) and a first active core (112), and the outer flange fixing seat (111) is coaxially sleeved on the outside of the first active core (112); The first active core (112) is interference-fitted with the end shaft of the conveying auger (3); Sixteen first sliding grooves are evenly arranged on the outer wall of the first active core (112), a first sliding pin (114) is slidably connected inside the first sliding groove, and a first spring (113) is installed between the first sliding pin (114) and the bottom wall of the first sliding groove, and a first clamping groove corresponding to the end of the first sliding pin (114) is arranged on the inner wall of the outer flange fixing seat (111).

4. The overload-proof non-row corn harvesting header according to claim 1, characterized in that: The second safety clutch (14) comprises an outer fixing seat (141) and a second active core (142), and the outer fixing seat (141) is coaxially sleeved on the outside of the second active core (142); The axis of the second active core (142) is penetrated by a hexagonal hole, and the inner diameter of the hexagonal hole matches the outer diameter of the left hexagonal shaft (13) and the right hexagonal shaft (16). The left hexagonal shaft (13) and the right hexagonal shaft (16) are interference-fitted with the second active core (142). The outer fixing seat (141) is installed on the end of the meshing kit (15). The meshing kit (15) is meshed with the spur gear (18) for transmission and can drive the power transmission shaft 1 (19). 24 second slide grooves are evenly arranged on the outer wall of the second active core (142), a second slide pin (144) is slidably connected inside the second slide groove, and a second spring (143) is installed between the second slide pin (144) and the bottom wall of the second slide groove, and a second clamping groove corresponding to the end of the second slide pin (144) is arranged on the inner wall of the outer fixed seat (141).

5. The overload-proof non-row corn harvesting header according to claim 1, characterized in that: The crop separation cover assembly (8) comprises a straight cylinder (801) and a conical cylinder (802), and the straight cylinder (801) and the conical cylinder (802) are integrally formed by rotational molding, and a through groove (803) is provided on the top of the straight cylinder (801) and the conical cylinder (802), so that a crop-moving chain (25) and a shifting plate (26) pass through the through groove (803), and one side of the crop-moving chain (25) passes through the inside of the straight cylinder (801) to provide a supporting force.

6. The overload-proof non-row corn harvesting header according to claim 1, characterized in that: The first transmission member (9), the second transmission member (12) and the third transmission member (10) are configured as chains, and sprockets are provided at the connection points between the main input shaft (4), the left input shaft (5), the right input shaft (6), the left hexagonal shaft (13), the right hexagonal shaft (16) and the end shafts of the conveying auger (3) and the chains.

7. The overload-proof non-row corn harvesting header according to claim 1, characterized in that: The left input shaft (5) and the right input shaft (6) are coaxially distributed, and the main input shaft (4) is staggeredly distributed between the left input shaft (5) and the right input shaft (6), and the main input shaft (4), the left input shaft (5) and the right input shaft (6) are all distributed in parallel.

8. The overload-proof non-row corn harvesting header according to claim 1, characterized in that: The spiral rows on the outside of the conveying auger (3) are distributed symmetrically, and discharge ports are provided at positions corresponding to the conveying auger (3) on both sides of the cutting platform (2).

9. The overload-proof non-row corn harvesting header according to claim 1, characterized in that: The cutting platform frame (2) is assembled on the vehicle body through the mounting frame (1), and a driving wheel disc (30) is sleeved on the outer side of the main input shaft (4). A driving motor is installed on the vehicle body, and the output shaft of the driving motor drives the driving wheel disc through a transmission belt.

Images