A corn kernel harvester with a blade cutter box

Abstract

This utility model discloses a corn kernel harvester with a cutter head box, specifically relating to the field of agricultural machinery. It includes a head box power transmission assembly, comprising a main housing. A main drive shaft is rotatably mounted through the inner cavity of the main housing. Two sets of bevel gear shafts are located on one side of the main housing, and the bevel gear shafts are rotatably connected to the main housing via a toothed sprocket I. A transmission component is mounted on the main drive shaft. This utility model, through the arrangement of an upper and lower cutter assembly inclined relative to the main housing, achieves a high-low layered cutting process for straw, increasing the fragmentation rate. The inclined cutter head further enhances the efficiency of shredding the stalks. The lower cutter assembly, designed to be detachable for use as needed, expands the harvesting range of the head box, enabling the stalks to be processed into easily degradable and return-to-the-field fragments in a single operation. This effectively cuts and crushes straw, optimizes soil structure, and promotes the recycling of organic matter.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, and more specifically, to a corn kernel harvester with a sling cutter box. Background Technology

[0002] With the development of modern agriculture, the demand for efficient and comprehensive crop harvesting machinery is increasing. For crops like corn, traditional harvesters can only pick ears and thresh grains, but cannot handle the remaining stalks. This results in the stalks being left in the field after harvesting, not being fully utilized, and also increasing the workload and cost of subsequent cleanup.

[0003] The existing patent, CN214508067U, entitled "A Gearbox for a Corn Harvester with Straw Chopping," uses a two-stage transition and three-stage acceleration mechanism in its blade-speed-increasing gear assembly to achieve a blade shaft speed three times that of the power input shaft, thus enabling better stable transitions and speed changes. However, like most existing corn harvesting machinery, while these designs and improvements improve harvesting efficiency and reduce damage to grains to some extent, they do not effectively solve the problem of straw disposal. Meanwhile, straw return to the field is an important approach in modern sustainable agriculture, used to increase soil organic matter, conserve water and soil, and improve soil fertility. However, existing harvesting machinery lacks effective stalk crushing and processing devices, making it difficult to meet the requirements for straw return to the field.

[0004] On the other hand, traditional corn harvesters have low efficiency in crushing stalks during the harvesting process, making it impossible to meet the standards for returning stalks to the field. To address this issue, practical suspension devices have been designed to improve operational efficiency. However, overall, this technological field still faces the challenge of efficiently cutting, crushing, and processing stalks during the harvesting process.

[0005] In conclusion, there is an urgent need for a new type of corn kernel harvesting machinery that can improve harvesting efficiency while effectively handling stalks and returning straw to the field, thereby making up for the shortcomings of existing technologies and promoting the sustainable development of agriculture. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a corn kernel harvester with a sling cutter box. The technical problem solved by the present invention is: how to deal with the straw left after harvesting.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a corn kernel harvester with a cutter head box, comprising a head power transmission assembly, the head power transmission assembly comprising a main housing, a main drive shaft rotatably disposed through the inner cavity of the main housing, two sets of bevel gear shafts disposed on one side of the main housing, the bevel gear shafts being rotatably connected to the main housing via a toothed sprocket I, and a transmission component disposed on the main drive shaft;

[0008] The main housing is provided with an upper rotary cutter assembly and a lower rotary cutter assembly at both ends. The upper rotary cutter assembly and the lower rotary cutter assembly are both inclined relative to the main housing, and the upper rotary cutter assembly and the lower rotary cutter assembly are driven and transmitted to the main housing.

[0009] In a preferred embodiment, the transmission component includes a bevel gear II fixedly disposed in the middle of the main drive shaft and bevel gears I disposed on both sides of the bevel gear II. Both the bevel gear II and the bevel gear I are placed in the inner cavity of the main housing, and the two bevel gears I respectively mesh with two sets of bevel gear shafts for transmission.

[0010] In a preferred embodiment, one end of the main drive shaft is provided with a toothed sprocket II, and the other end of the main drive shaft is provided with a flat gear II.

[0011] In a preferred embodiment, the inner cavity of the main housing is further provided with an arc-tooth bevel gear shaft, and the bottom of the arc-tooth bevel gear shaft is provided with two sets of flat gears III, which mesh and drive each other. One set of flat gears III is fixedly connected to the arc-tooth bevel gear shaft and rotatably connected to the main housing.

[0012] The spiral bevel gear shaft meshes with bevel gear II for transmission. The spiral bevel gear shaft is externally connected to a driven shaft IV. The driven shaft IV passes through the main housing, and a pin and a pin sleeve are inserted through one end of the driven shaft IV extending out of the main housing.

[0013] In a preferred embodiment, each of the two sets of spur gears III has a driven gear on one side, and a spur gear I is provided on the side of the driven gear. Both the spur gears III and I mesh with the driven gears for transmission, and the driven gears and spur gear I are rotatably connected to the inner wall of the main housing by deep groove ball bearings.

[0014] In a preferred embodiment, both the upper and lower rotary cutter assemblies include a cutter housing I and a cutter housing II. The cutter housing I and the cutter housing II form an inclined “7” shape design. The cutter housing I is provided with a drive shaft I inside. The drive shaft I and the cutter housing I are provided with a rotary bearing. The drive shaft I is inserted and driven by a spur gear I. A bevel gear III is fixedly provided on the drive shaft I.

[0015] The blade housing II is provided with a drive shaft III inside. The drive shaft III is rotatably connected to the blade housing II with a bushing. The top of the drive shaft III is provided with a bevel gear IV, which meshes with the bevel gear III for transmission.

[0016] A flying knife pressure plate is provided at the end of the transmission shaft III away from the bevel gear IV. The flying knife pressure plate is provided with multiple flying knives, and the flying knives and the flying knife pressure plate rotate through a rotating sleeve.

[0017] In a preferred embodiment, the upper rotary cutter assembly further includes a drive shaft II, which is linked to a drive shaft I, and the end of the drive shaft II away from the drive shaft I is inserted into a spur gear I for transmission.

[0018] The technical effects and advantages of this utility model are as follows:

[0019] This invention utilizes an upper and lower rotary blade assembly tilted relative to the main casing to cut straw into segments in a layered manner, increasing the fragmentation rate. The tilted blades further enhance the efficiency of shredding the stalks. The lower rotary blade assembly is designed to be disassembled and used according to actual conditions, expanding the harvesting range of the cutter and improving operational flexibility and adaptability. It also increases the fragmentation rate of cut straw, achieving one-time processing of stalks into easily degradable fragments that can be returned to the field. This effectively cuts and crushes straw, reducing the environmental impact of agricultural waste and enabling direct straw return to the field, optimizing soil structure and promoting the recycling of organic matter. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0021] Figure 2 This is a schematic diagram of the overall transverse cross-section structure of this utility model.

[0022] Figure 3 This is a cross-sectional schematic diagram of the cutting platform power transmission assembly of this utility model.

[0023] Figure 4 This is a schematic diagram of the upper rotary cutter assembly of this utility model.

[0024] Figure 5 This is a schematic diagram of the lower rotary cutter assembly of this utility model.

[0025] Figure 6 This is a schematic diagram of the lower rotary cutter assembly structure of Embodiment 2 of this utility model.

[0026] The attached figures are labeled as follows: 1 Main housing, 2 Main drive shaft, 3 Toothed sprocket I, 4 Bevel gear shaft, 5 Bevel gear I, 6 Bevel gear II, 7 Toothed sprocket II, 8 Flat gear I, 9 Flat gear II, 10 Flat gear III, 11 Arc bevel gear shaft, 12 Driven drive shaft I, 13 Driven drive shaft II, 14 Bevel gear III, 15 Bevel gear IV, 16 Driven drive shaft III, 17 Flying knife pressure plate, 18 Rotating sleeve, 19 Flying knife, 20 Driven drive shaft IV, 21 Pin, 22 Pin sleeve, 23 Driven gear, 01 Upper rotary cutter assembly, 02 Lower rotary cutter assembly. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1:

[0028] This utility model provides, for example Figure 1-5 The corn kernel harvester shown includes a header box with a sling cutter, comprising a header power transmission assembly. The header power transmission assembly includes a main housing 1, with a main drive shaft 2 rotatably mounted through the inner cavity of the main housing 1. Two sets of bevel gear shafts 4 are mounted on one side of the main housing 1, and the bevel gear shafts 4 are rotatably connected to the main housing 1 via a sprocket I3. A transmission component is mounted on the main drive shaft 2. The transmission component includes a bevel gear II6 fixedly mounted in the middle of the main drive shaft 2 and bevel gears I5 mounted on both sides of the bevel gear II6. Both bevel gears I and II are located inside the main housing 1, and the two bevel gears I5 mesh with two sets of bevel gear shafts 4 respectively; one end of the main drive shaft 2 is equipped with a toothed sprocket II 7, and the other end of the main drive shaft 2 is equipped with a spur gear II 9; each of the two sets of spur gears III 10 has a driven gear 23 on one side, and a spur gear I 8 is located on one side of the driven gear 23. Both the spur gears III 10 and I 8 mesh with the driven gears 23, and the driven gears 23 and I 8 are rotatably connected to the inner wall of the main housing 1 by deep groove ball bearings.

[0029] The inner cavity of the main housing 1 is also provided with an arc-tooth bevel gear shaft 11. The bottom of the arc-tooth bevel gear shaft 11 is provided with two sets of spur gears Ⅲ10. The two sets of spur gears Ⅲ10 mesh and drive each other. One set of spur gears Ⅲ10 is fixedly connected to the arc-tooth bevel gear shaft 11 and rotatably connected to the main housing 1. The arc-tooth bevel gear shaft 11 meshes and drives with bevel gears Ⅱ6. The arc-tooth bevel gear shaft 11 is externally connected to a drive shaft Ⅳ20. The drive shaft Ⅳ20 passes through the main housing 1, and a pin 21 and a pin sleeve 22 are provided at one end of the drive shaft Ⅳ20 extending out of the main housing 1.

[0030] The specific implementation method is as follows: This device transmits power from the toothed sprocket II7 or the flat gear II9 to drive the main drive shaft 2 to rotate; the power transmission direction is such that the rotation of the main drive shaft 2 drives the rotation of the bevel gear I5, and the rotation of the bevel gear I5 and the bevel gear shaft 4 drives the rotation of the toothed sprocket I3; the rotation of the toothed sprocket I3, through the reeling chain installed on the left toothed sprocket I3, realizes the corn stalks being pushed towards the main box shell 1 during the corn harvesting process; similarly, the rotation of the right toothed sprocket I3 pushes the corn stalks towards the main box shell 1 through the reeling chain; the power transmission direction is such that the rotation of the main drive shaft 2 drives the rotation of the bevel gear II6, and the meshing rotation of the bevel gear II6 and the arc tooth bevel gear shaft 11 drives the rotation of the drive shaft IV20 and the pin sleeve 22, and the pin sleeve 22, together with the matching pull roller, rotates to "remove" the corn ears;

[0031] The main housing 1 is provided with an upper rotary cutter assembly 01 and a lower rotary cutter assembly 02 at both ends. The upper rotary cutter assembly 01 and the lower rotary cutter assembly 02 are both inclined relative to the main housing 1, and the upper rotary cutter assembly 01 and the lower rotary cutter assembly 02 are respectively driven by the main housing 1.

[0032] Both the upper rotary cutter assembly 01 and the lower rotary cutter assembly 02 include a cutter housing I and a cutter housing II. The cutter housing I and the cutter housing II form an inclined “7” shape design. The cutter housing I is equipped with a drive shaft I12 inside. The drive shaft I12 and the cutter housing I are provided with a rotating bearing. The drive shaft I12 is connected to a spur gear I8 for transmission. A bevel gear III14 is fixed on the drive shaft I12.

[0033] The inside of the blade housing II is provided with a drive shaft III16. The drive shaft III16 is rotatably connected to the blade housing II. A bevel gear IV15 is provided on the top of the drive shaft III16. The bevel gear IV15 meshes with the bevel gear III14 for transmission.

[0034] A flying knife pressure plate 17 is provided at the end of the drive shaft Ⅲ16 away from the bevel gear Ⅳ15. Multiple flying knives 19 are provided on the flying knife pressure plate 17. The flying knives 19 and the flying knife pressure plate 17 rotate through a rotating sleeve 18.

[0035] The upper rotary cutter assembly 01 also includes a drive shaft II 13, which is linked with a drive shaft I 12, and the end of the drive shaft II 13 away from the drive shaft I 12 is inserted into a spur gear I 8 for transmission.

[0036] The specific implementation method is as follows: the power transmission sequence of the upper rotary blade assembly 01 is as follows: the rotation of the main drive shaft 2 drives the rotation of the bevel gear II 6, the meshing transmission of the bevel gear II 6 and the arc tooth bevel gear shaft 11, the transmission through the flat gear III 10 and the driven gear 23 and the flat gear I 8, the meshing transmission of the bevel gear III 14 and the bevel gear IV 15 driven by the driven shaft II 13, and then the rotation of the flying blade pressure plate 17 driven by the driven shaft III 16, and the remaining straw is cut and shredded by the flying blade 19;

[0037] The power transmission sequence of the lower rotary blade assembly 02 is as follows: the rotation of the main drive shaft 2 drives the rotation of the bevel gear II 6, the bevel gear II 6 meshes with the arc bevel gear shaft 11, the transmission is transmitted through the flat gear III 10 and the driven gear 23 and the flat gear I 8, the transmission is transmitted through the driven shaft I 12, the bevel gear III 14 meshes with the bevel gear IV 15, and then the transmission is transmitted through the driven shaft III 16, which drives the flying blade pressure plate 17 to rotate, and the flying blade 19 cuts and shreds the remaining straw.

[0038] Based on the traditional header function, this device has an inclined upper rotary blade assembly 01 and lower rotary blade assembly 02 that can cut the straw into "segments"; eliminating the need for a straw crushing device; crushing and cutting the corn straw makes it easier to return the straw to the field, or to use a baler to bale the corn straw for harvesting as livestock feed; if the corn straw is harvested for feed, the straw cut by this product contains less dust and is more conducive to straw fermentation compared to straw crushed by traditional machinery. Example 2:

[0039] The Flying Knife 19 uses high-hardness, high-wear-resistant alloy steel for its blades, and its blade shape is professionally designed to adapt to cutting straw of varying hardness. When encountering uneven terrain where the lower rotary blade assembly 02 cannot be used, part of the lower rotary blade assembly 02 can be disassembled, and the structure can be changed from... Figure 5 Structure becomes Figure 6 Structure: Many flying knife housings on the market are separate from the cutting table and need to be transmitted to the flying knife housing via belt or chain. However, the main housing 1, upper rotary knife assembly 01, and lower rotary knife assembly 02 are integrated into one unit, which features a compact structure, high transmission efficiency, and stronger reliability. The lower rotary knife assembly 02 can make the corn stalk stubble shorter, while the upper rotary knife assembly 01 can cut the corn stalk into "segments". In addition, it can be removed as an optional product.

[0040] This invention addresses the problem that existing corn harvesters typically leave long stalks in the field after picking ears and threshing, which not only makes subsequent cultivation difficult but also fails to meet the requirements for straw return to the field and comprehensive resource utilization. It aims to solve the technical shortcomings of traditional corn harvesters in effectively handling residual straw, while improving harvesting efficiency and economic benefits.

[0041] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0042] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0043] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A corn kernel harvester with a rotary cutter head box, characterized in that: The device includes a cutting table power transmission assembly, which includes a main housing (1), a main drive shaft (2) is rotatably provided through the inner cavity of the main housing (1), two sets of bevel gear shafts (4) are provided on one side of the main housing (1), and the bevel gear shafts (4) are rotatably connected to the main housing (1) through a toothed sprocket I (3), and a transmission component is provided on the main drive shaft (2); The main housing (1) is provided with an upper rotary cutter assembly (01) and a lower rotary cutter assembly (02) at both ends. The upper rotary cutter assembly (01) and the lower rotary cutter assembly (02) are both inclined relative to the main housing (1), and the upper rotary cutter assembly (01) and the lower rotary cutter assembly (02) are driven and transmitted to the main housing (1) respectively.

2. A corn kernel harvester with a rotary cutter head box according to claim 1, characterized in that: The transmission component includes a bevel gear II (6) fixedly disposed in the middle of the main drive shaft (2) and bevel gear I (5) disposed on both sides of the bevel gear II (6). The bevel gear II (6) and bevel gear I (5) are both placed in the inner cavity of the main housing (1), and the two bevel gears I (5) respectively mesh with two sets of bevel gear shafts (4) for transmission.

3. A corn kernel harvester with a rotary cutter head box according to claim 1, characterized in that: One end of the main drive shaft (2) is provided with a toothed sprocket II (7), and the other end of the main drive shaft (2) is provided with a flat gear II (9).

4. A corn kernel harvester with a sling cutter head box according to claim 2, characterized in that: The inner cavity of the main housing (1) is also provided with an arc bevel gear shaft (11), and the bottom of the arc bevel gear shaft (11) is provided with two sets of flat gears III (10). The two sets of flat gears III (10) mesh and drive each other. One set of flat gears III (10) is fixedly connected to the arc bevel gear shaft (11) and rotatably connected to the main housing (1). The spiral bevel gear shaft (11) meshes with the bevel gear II (6) for transmission. The spiral bevel gear shaft (11) is externally connected to a drive shaft IV (20). The drive shaft IV (20) passes through the main housing (1), and a pin (21) and a pin sleeve (22) are provided at one end of the drive shaft IV (20) extending out of the main housing (1).

5. A corn kernel harvester with a rotary cutter head box according to claim 4, characterized in that: Both sets of spur gears III (10) are provided with driven gears (23) on one side, and spur gears I (8) are provided on one side of the driven gears (23). Both the spur gears III (10) and the spur gears I (8) mesh with the driven gears (23) for transmission, and the driven gears (23) and the spur gears I (8) are rotatably connected to the inner wall of the main housing (1) by deep groove ball bearings.

6. A corn kernel harvester with a rotary cutter head box according to claim 5, characterized in that: The upper rotary cutter assembly (01) and the lower rotary cutter assembly (02) both include a cutter shell I and a cutter shell II. The cutter shell I and the cutter shell II form an inclined "7" shape design. The cutter shell I is provided with a drive shaft I (12). The drive shaft I (12) and the cutter shell I are provided with a rotating bearing. The drive shaft I (12) is connected to a spur gear I (8) for transmission. A bevel gear III (14) is fixed on the drive shaft I (12). The blade housing II is provided with a drive shaft III (16) inside. The drive shaft III (16) is rotatably connected to the blade housing II. The top of the drive shaft III (16) is provided with a bevel gear IV (15). The bevel gear IV (15) meshes with the bevel gear III (14) for transmission. A flying knife pressure plate (17) is provided at the end of the transmission shaft III (16) away from the bevel gear IV (15). The flying knife pressure plate (17) is provided with a plurality of flying knives (19). The flying knives (19) and the flying knife pressure plate (17) rotate through a rotating sleeve (18).

7. A corn kernel harvester with a rotary cutter head box according to claim 6, characterized in that: The upper rotary cutter assembly (01) also includes a drive shaft II (13), which is linked with a drive shaft I (12), and the end of the drive shaft II (13) away from the drive shaft I (12) is inserted into a spur gear I (8) for transmission.

Images