Header driving box and corn harvester

Abstract

The utility model provides a header driving box and a corn harvester, the header driving box comprises a box body and a variable speed driving device, an input shaft and an output shaft are rotatably installed in the box body, an input gear is arranged on the input shaft, an output gear is arranged in the middle of the output shaft, and the input gear is meshed with the output gear; the two ends of the output shaft extend out of the box body and are provided with output chain wheels; the variable-speed driving equipment is fixed on the box body; and a driving shaft of the variable-speed driving equipment extends into the box body and is in coaxial transmission connection with one end of the input shaft. The device is driven by the variable-speed driving equipment, can provide different rotating speeds, and is good in adaptability; power is transmitted through gears in the closed box body, the transmission efficiency is high, and the failure rate is low; all the gears are basically arranged in a coplanar mode, the axial size is small, occupied space is small, the requirement for narrow space layout is met, and the device can be matched with cutting tables with different line spacing and different line numbers.

Description

Technical Field

[0001] This utility model relates to the field of harvester header technology, specifically to a header drive box and a corn harvester. Background Technology

[0002] The header is one of the main working components of a harvester. Its main function is to cut and feed crops to achieve the purpose of harvesting. The header drive gearbox is an important component of the corn header. Its main function is to transmit power to the header picking gearbox, which drives the picking roller and other working components to achieve cutting, picking, and feeding.

[0003] Currently, the mainstream headers on the market are mainly driven by simple chains and sprockets. That is, the power of the drive equipment on the harvester is transmitted to the transmission box through the chain and sprocket, and then transmitted to the corresponding ear-picking tooth box through the chain and sprocket. This not only results in a long transmission path and low efficiency, but also a single rotation speed, insufficient adaptability, and a high failure rate. Utility Model Content

[0004] The technical problem to be solved by this utility model is: how to improve the transmission efficiency of power transmission to the ear-picking gearbox and improve its adaptability.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0006] This utility model provides a cutting table drive box, including a box body and a speed-changing drive device. An input shaft and an output shaft are rotatably mounted inside the box body. An input gear is provided on the input shaft, and an output gear is provided in the middle of the output shaft. The input gear and the output gear mesh. Both ends of the output shaft extend out of the box body and are provided with output sprockets. The speed-changing drive device is fixed on the box body, and the drive shaft of the speed-changing drive device extends into the box body and is coaxially connected to one end of the input shaft for transmission.

[0007] The beneficial effects of this utility model are:

[0008] This invention is driven by a variable speed drive device, which can provide different speeds to meet the harvesting needs of crops with different moisture levels. It can also replace different specifications of variable speed drive devices, making it highly adaptable. Power is transmitted to the output shaft through gears in the enclosed housing. The output shaft can drive the picking gear box to work. The gear transmission has low friction loss, which improves transmission efficiency and reduces the failure rate. At the same time, the meshing characteristics of the gears determine that the gears are basically coplanar, with small axial dimensions. This allows the housing thickness to be within 112mm, occupying less space and meeting the needs of layout in narrow spaces. It can be matched with cutting tables with different row spacing and different numbers of rows.

[0009] Based on the above technical solution, the present invention can be further improved as follows.

[0010] Furthermore, a detachable sealing cover is provided on one side of the housing. The first end of the input shaft, the first end of the intermediate shaft, and the first end of the output shaft are all connected to the housing via bearings. The second end of the input shaft, the second end of the intermediate shaft, and the second end of the output shaft are all connected to the sealing cover via bearings.

[0011] When removing the sealing cover, various gears, shafts, and other components inside the housing can be disassembled and assembled simultaneously, facilitating maintenance.

[0012] Furthermore, the sealing cover is connected to the housing by multiple screws, which are distributed along the edge of the sealing cover.

[0013] This allows for pressure to be applied to the edge of the sealing cap using multiple screws, improving the seal between the edge of the sealing cap and the housing.

[0014] Furthermore, the housing has a rectangular groove mounting position on the side away from the sealing cover, and the transmission drive device has a mounting plate with a shape matching the groove mounting position, which is fixed to the groove mounting position by bolts.

[0015] It is easy to install variable speed drive equipment and has good stability.

[0016] Furthermore, an intermediate shaft is rotatably mounted inside the housing, and an idler wheel is provided on the intermediate shaft. The idler wheel is located between the input gear and the output gear, and both the input gear and the output gear mesh with the idler wheel.

[0017] The idler gear increases the distance between the input and output shafts, thereby increasing the distance between the transmission drive and the output sprocket on the same side. At the same time, it prevents the radii of the input and output gears from becoming too large, reducing the volume of the housing and occupying less space.

[0018] Furthermore, the axes of the input gear, the idler gear, and the output gear are parallel to each other.

[0019] The overall axial space occupancy is small, which makes it easy to reduce the thickness of the box. It has good compactness and meets the needs of layout in small spaces.

[0020] Furthermore, the axis of the input gear and the axis of the idler gear are both located in the first plane, and the axis of the idler gear and the axis of the output gear are both located in the second plane, forming an angle of 120° to 150° between the first plane and the second plane.

[0021] The idler wheel allows for a certain distance between the input and output shafts, preventing interference between the output sprocket's external power chain structure and the speed-changing drive equipment, resulting in high reliability. During manufacturing, by controlling the angle between the first and second planes, the idler wheel can be controlled to avoid the planes containing the input and output shafts, thereby controlling the distance between the input and output shafts. This approach balances a smaller housing length with no interference between the output sprocket's external power chain structure and the speed-changing drive equipment, resulting in good compactness.

[0022] Furthermore, a vent plug is provided on the top of the box.

[0023] This facilitates the equalization of air pressure inside the chamber.

[0024] Furthermore, a first baffle and a second baffle are fixed on the top inner wall of the box. The lower edge of the first baffle and the lower edge of the second baffle are inclined towards each other and fixedly connected. The first baffle, the second baffle, and the top wall of the box form a venting cavity. At least one end of the venting cavity is connected to the cavity inside the box. The vent plug is connected to the middle of the venting cavity.

[0025] The first and second baffles can block the splashed lubricating oil inside the gearbox, thus forming a hidden vent chamber, which helps prevent oil leakage from the vent plug when the drive gearbox is working.

[0026] Furthermore, the speed-changing drive device is a hydraulic motor.

[0027] It is easy to provide sufficient output torque, and the speed control is convenient and reliable.

[0028] This utility model also provides a corn harvester, including a header, on which a picking tooth box and the aforementioned header drive box are provided. Each header drive box is arranged correspondingly to two picking tooth boxes, and the two output sprockets at both ends of the output shaft correspond one-to-one with the input sprockets of the two picking tooth boxes and are connected by chain drive.

[0029] It can drive the picking gearbox to work at different speeds to meet the harvesting needs of crops with different levels of dryness and moisture; the transmission friction loss is small, the transmission efficiency is high, and the failure rate is low. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the external appearance of this utility model.

[0031] Figure 2 for Figure 1 The right view.

[0032] Figure 3 for Figure 1 The left view.

[0033] Figure 4 for Figure 1 A schematic diagram of the internal structure from the viewpoint.

[0034] Figure 5 for Figure 3 Enlarged detail of the upper internal section view in the view direction.

[0035] In the accompanying drawings, the technical features represented by each reference numeral are as follows:

[0036] 1-Box housing; 2-Speed ​​change drive device; 3-Input shaft; 31-Input gear; 4-Intermediate shaft; 41-Idler gear; 5-Output shaft; 51-Output gear; 52-Output sprocket; 6-Sealing cover; 7-First plane; 8-Second plane; 9-Mounting plate; 10-Ventilator plug; 11-First baffle; 12-Second baffle. Detailed Implementation

[0037] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0038] This utility model refers to Figure 1-5 .

[0039] This utility model provides a cutting table drive box, including a box body 1 and a speed change drive device 2. An input shaft 3 and an output shaft 5 are rotatably installed inside the box body 1. An input gear 31 is provided on the input shaft 3, and an output gear 51 is provided in the middle of the output shaft 5. The input gear 31 and the output gear 51 mesh. Both ends of the output shaft 5 extend out of the box body 1 and are provided with output sprockets 52. The speed change drive device 2 is fixed on the box body 1, and the drive shaft of the speed change drive device 2 extends into the box body 1 and is coaxially connected to one end of the input shaft 3 for transmission.

[0040] principle:

[0041] The drive shaft of the variable speed drive device 2 is coaxially connected to one end of the input shaft 3. This coaxial connection can be achieved using a coupling, spline sleeve, or similar method. The variable speed drive device 2 can utilize a hydraulic motor, servo motor, or similar technology. The input gear 31 meshes with the output gear 51; they can mesh directly or indirectly via an intermediate gear.

[0042] During installation, the housing 1 can be fixed to the frame of the harvester. The output sprockets 52 at both ends of the output shaft 5 are connected to two adjacent ear-picking tooth boxes via chain drive. During operation, the power of the transmission drive device 2 is transmitted to the input shaft 3. The input shaft 3 transmits power to the output shaft 5 in sequence through the input gear 31, idler gear 41, and output gear 51, thereby driving the output sprockets 52 at both ends of the output shaft 5 to rotate in the same direction. Thus, through a header drive housing of this invention, two adjacent ear-picking tooth boxes can be driven to work in the same state or in the same direction at different speeds, realizing the ear-picking and threshing operations of the header.

[0043] In summary, this utility model is driven by a variable speed drive device 2, which can provide different speeds to meet the harvesting needs of crops with different levels of dryness and moisture. It can also replace variable speed drive devices 2 of different specifications, making it highly adaptable. Power is transmitted to the output shaft 5 through gears inside the enclosed housing 1. The output shaft 5 can drive the ear-picking gear box to work. The gear transmission has low friction loss, which improves transmission efficiency and reduces the failure rate. At the same time, the meshing characteristics of the gears determine that the gears are basically coplanarly arranged, with a small axial dimension. This allows the thickness of the housing 1 to be within 112mm, occupying less space and meeting the needs of layouts in narrow spaces. It can be matched with cutting tables with different row spacing and different numbers of rows.

[0044] Furthermore, a detachable sealing cover 6 is provided on one side of the housing 1. The first end of the input shaft 3, the first end of the intermediate shaft 4, and the first end of the output shaft 5 are all connected to the housing 1 through bearings. The second end of the input shaft 3, the second end of the intermediate shaft 4, and the second end of the output shaft 5 are all connected to the sealing cover 6 through bearings.

[0045] Note: The two ends of the output shaft 5 are not limited to the portions extending out of the housing 1, but also include the portions on both sides of the output gear 51 located inside the housing 1. Preferably, the portion of the first end of the output shaft 5 located inside the housing 1 is connected to the housing 1 via a bearing, and the portion of the second end located inside the housing 1 is connected to the sealing cover 6 via a bearing.

[0046] When the sealing cover 6 is removed, various gears, shafts and other components inside the housing 1 can be disassembled and assembled at the same time, which is convenient for maintenance.

[0047] Furthermore, the sealing cover 6 is connected to the housing 1 by a plurality of screws, which are distributed along the edge of the sealing cover 6.

[0048] This allows for the application of pressure to the edge of the sealing cover 6 using multiple screws, thereby improving the seal between the edge of the sealing cover 6 and the housing 1.

[0049] Furthermore, the housing 1 has a rectangular groove mounting position on the side away from the sealing cover 6, and the transmission drive device 2 has a mounting plate 9 with a shape matching the groove mounting position. The mounting plate 9 is fixed to the groove mounting position by bolts.

[0050] It is easy to install variable speed drive equipment 2 and has good stability.

[0051] Furthermore, an intermediate shaft 4 is rotatably installed inside the housing 1. An idler wheel 41 is provided on the intermediate shaft 4. The idler wheel 41 is located between the input gear 31 and the output gear 51. Both the input gear 31 and the output gear 51 mesh with the idler wheel 41.

[0052] The idler wheel 41 increases the distance between the input shaft 3 and the output shaft 5, thereby increasing the distance between the speed change drive device 2 and the output sprocket 52 on the same side. At the same time, it prevents the radius of the input gear 31 and the output gear 51 from being too large, reducing the volume of the housing 1 and occupying less space.

[0053] Furthermore, the axes of the input gear 31, the idler gear 41, and the output gear 51 are parallel to each other.

[0054] The overall axial space occupancy is small, which makes it easier to reduce the thickness of the box 1, and it has good compactness, which meets the needs of layout in narrow spaces.

[0055] Furthermore, the axis of the input gear 31 and the axis of the idler gear 41 are both located on the first plane 7, and the axis of the idler gear 41 and the axis of the output gear 51 are both located on the second plane 8, with an included angle of 120° to 150° between the first plane 7 and the second plane 8.

[0056] The idler wheel 41 allows for a certain distance between the input shaft 3 and the output shaft 5, preventing interference between the output sprocket 52's power transmission chain structure and the speed-changing drive device 2, resulting in high reliability. During manufacturing, by controlling the included angle between the first plane 7 and the second plane 8, the idler wheel 41 can be controlled to avoid the planes containing the input shaft 3 and the output shaft 5, thereby controlling the distance between the input shaft 3 and the output shaft 5. This balances the relatively small length of the housing 1 with the fact that the output sprocket 52's power transmission chain structure does not interfere with the speed-changing drive device 2, resulting in good compactness.

[0057] Furthermore, the top of the housing 1 is provided with a vent plug 10.

[0058] This facilitates the equalization of air pressure inside the housing 1.

[0059] Furthermore, a first baffle 11 and a second baffle 12 are fixed on the top inner wall of the box 1. The lower edge of the first baffle 11 and the lower edge of the second baffle 12 are inclined towards each other and fixedly connected. The first baffle 11, the second baffle 12 and the top wall of the box 1 form a ventilated cavity. At least one end of the ventilated cavity is connected to the cavity inside the box 1. The vent plug 10 is connected to the middle of the ventilated cavity.

[0060] Note: The first baffle 11 and the second baffle 12 can be integrally cast with the box body 1.

[0061] The first baffle 11 and the second baffle 12 can block the lubricating oil splashed inside the housing 1, thereby forming a hidden vent chamber, which helps to prevent the vent plug 10 from leaking oil when the drive housing is working.

[0062] Furthermore, the speed-changing drive device 2 is a hydraulic motor.

[0063] It is easy to provide sufficient output torque, and the speed control is convenient and reliable.

[0064] This utility model also provides a corn harvester, including a header, on which a picking tooth box and the aforementioned header drive box are provided. Each header drive box is arranged correspondingly to two picking tooth boxes, and the two output sprockets 52 at both ends of the output shaft 5 correspond one-to-one with the input sprockets of the two picking tooth boxes and are connected by chain drive.

[0065] It can drive the picking gearbox to work at different speeds to meet the harvesting needs of crops with different levels of dryness and moisture; the transmission friction loss is small, the transmission efficiency is high, and the failure rate is low.

[0066] In the description of this utility model, it should be understood that if descriptive terms indicating orientation, direction, or positional relationship appear, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," etc., the orientation or positional relationship indicated in this specification is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of understanding this utility model and simplifying the description, and does not indicate or imply that the part, element, or whole referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0067] Furthermore, if sequential descriptive terms such as "first," "second," etc., appear, their purpose in this specification is for ease of understanding or simplification. For example, to distinguish multiple technical features of the same type or function, which must be mentioned separately, this specification may use prefixes or suffixes to differentiate them. Therefore, they should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first," "second," etc., may explicitly or implicitly include at least one of those features. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0068] In this utility model, if descriptive terms describing structural relationships are used, such as "installation," "connection," "joining," and "fixing," they should be interpreted broadly unless otherwise explicitly specified and limited. For example, "installation," "connection," and "joining" can refer to a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between two components. "Fixing" can refer to an integral fixation or a detachable fixation using fasteners; it can be a direct fixation or a fixation through an intermediate medium. For those skilled in the art, the specific meaning of the above descriptive terms in this utility model can be understood based on the specific circumstances, the context, and the coherence of the preceding and following text.

[0069] In this utility model, if descriptive terms containing subordinate or connecting meanings appear, such as "above" or "below" the second feature, they should not be interpreted restrictively unless otherwise explicitly specified and limited. For example, "above" or "below" can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. For those skilled in the art, the specific meaning of the above descriptive terms in this utility model can be understood according to the specific circumstances, the context, and the coherence of the preceding and following text.

[0070] Furthermore, "above," "on top of," and "above" the first feature in relation to the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0071] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. The illustrative expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments, examples, and features described in this specification, and such combinations or integrations should all fall within the scope of the present invention.

[0072] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Variations, modifications, substitutions, and modifications made by those skilled in the art to the above embodiments within the scope of information available through public channels and in conjunction with the technical teachings given in this application are still covered within the protection scope of this application.

Claims

1. A header drive box, characterized by: The box (1) is provided with a detachable sealing cover (6), the first end of the input shaft (3), the first end of the intermediate shaft (4) and the first end of the output shaft (5) are connected with the box (1) through bearings, and the second end of the input shaft (3), the second end of the intermediate shaft (4) and the second end of the output shaft (5) are connected with the sealing cover (6) through bearings.

2. The header drive box of claim 1, wherein: The box (1) is provided with a rectangular recess installation position on the side away from the sealing cover (6), and the variable speed drive device (2) is provided with a mounting disc (9) matching the recess installation position in shape, and the mounting disc (9) is fixed on the recess installation position through bolts.

3. The header drive box of claim 2, wherein: The box (1) is further provided with an intermediate shaft (4) rotatably installed therein, and the intermediate shaft (4) is provided with an idler (41) located between the input gear (31) and the output gear (51), and the input gear (31) and the output gear (51) are engaged with the idler (41).

4. The header drive housing of claim 1, wherein: The shaft center of the input gear (31), the shaft center of the idler (41) and the shaft center of the output gear (51) are parallel to each other.

5. The header drive box of claim 4, wherein: The shaft center of the input gear (31) and the shaft center of the idler (41) are located on the first plane (7), and the shaft center of the idler (41) and the shaft center of the output gear (51) are located on the second plane (8), and the first plane (7) and the second plane (8) form an included angle of 120°-150°.

6. The header drive box of claim 5, wherein: The top of the box (1) is provided with a breathable plug (10).

7. The header drive housing of claim 1, wherein: The top inner wall of the box (1) is fixed with a first baffle (11) and a second baffle (12), the lower edges of the first baffle (11) and the second baffle (12) are oppositely inclined and fixedly connected, the first baffle (11), the second baffle (12) and the top wall of the box (1) form a breathable cavity, at least one end of the breathable cavity is communicated with the cavity in the box (1); the breathable plug (10) is communicated with the middle part of the breathable cavity.

8. The header drive box of claim 7, wherein: The variable speed drive device (2) is a hydraulic motor.

9. The header drive housing of any of claims 1-8, wherein: The header is provided with a header tooth box and the header drive box of any one of claims 1-9, each header drive box is arranged corresponding to two header tooth boxes, and the two output sprockets (52) at both ends of the output shaft (5) are respectively corresponding to the input sprockets of the two header tooth boxes and are connected through chain transmission.

10. A corn harvester comprising a header, characterized by: ​

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