Roller gear box of grain harvester

Abstract

The utility model relates to the technical field of agricultural machinery, in particular to a roller gearbox of a grain harvester. Comprising a box body, and the box body is provided with a first side face and a second side face which are adjacently arranged; the input shaft is in transmission connection with the output shaft, the input shaft and the output shaft are vertically arranged, the box body is further provided with a top cover and a connecting frame, the top cover, the first box cover and the second box cover are adjacent in pairs, the connecting frame and the top cover are oppositely arranged, the connecting frame and the box body are integrally formed, and the box body is provided with an opening. The connecting frame extends out of the box body to form a first extending frame away from the output shaft and a second extending frame close to the output shaft, and the projection area of the first extending frame on the plane where the top cover is located is larger than the projection area of the second extending frame on the plane where the top cover is located. The utility model provides a roller gearbox of a grain harvester. The structural stability is improved.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, specifically to a roller gearbox for a grain harvester. Background Technology

[0002] In agricultural production, grain harvesters are crucial agricultural machinery used to efficiently collect crop grains. The roller gearbox, as a core component of the grain harvester, directly impacts the overall stability and efficiency of the machine. Traditional roller gearbox designs often employ symmetrical structures, which, while simple to manufacture, can encounter problems such as spatial constraints, mechanical interference, and uneven force distribution in complex working environments. These issues not only affect the gearbox's efficiency but may also shorten its lifespan and increase maintenance costs. With the continuous improvement of agricultural mechanization, the requirements for the performance and stability of agricultural machinery are also increasing. Therefore, developing a roller gearbox that can adapt to complex working environments, reduce mechanical interference, and achieve a reasonable force distribution has become an urgent problem to be solved in the field of agricultural machinery. Utility Model Content

[0003] The present invention addresses the shortcomings of existing grain harvester roller gearboxes, which use a symmetrical structure for the connecting frame, resulting in limited space layout and uneven force distribution. The purpose of this invention is to provide a grain harvester roller gearbox that improves structural stability.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a grain harvester drum gearbox, comprising:

[0005] A housing, wherein a first side and a second side are arranged adjacent to each other;

[0006] The first lid is located on the first side of the box body;

[0007] The second lid protrudes from the second side of the box body;

[0008] An input shaft is rotatably connected to the housing, with one end of the input shaft extending from the first housing cover to the outside of the housing.

[0009] An output shaft is rotatably connected to the housing. The output shaft includes a first output shaft and a second output shaft. One end of the first output shaft extends out of the housing from the second housing cover, and one end of the second output shaft extends out of the housing. The second output shaft is coaxially arranged with the input shaft.

[0010] The input shaft and output shaft are connected by a drive and are arranged perpendicularly. The housing is also provided with a top cover and a connecting frame. The top cover, the first housing cover, and the second housing cover are adjacent to each other. The connecting frame is arranged opposite to the top cover and is integrally formed with the housing. The connecting frame extends outward from the housing to form a first extension frame away from the output shaft and a second extension frame close to the output shaft. The projected area of ​​the first extension frame on the plane of the top cover is greater than the projected area of ​​the second extension frame on the plane of the top cover.

[0011] In this technical solution, the adjacent arrangement of the first and second sides, as well as the rational arrangement of the first and second housing covers, results in a compact gearbox structure with high space utilization. The input shaft extends from the first housing cover, while the output shafts, including the first and second output shafts, extend from the second housing cover and other parts of the gearbox body, respectively. This not only facilitates connection with external equipment but also makes the entire transmission system more flexible and efficient. The coaxial arrangement of the input and second output shafts helps reduce energy loss during transmission and improves transmission efficiency. Simultaneously, the vertical arrangement of the input and output shafts further optimizes the transmission path, making power transmission more direct and efficient. The connecting frame is integrally formed with the gearbox body, enhancing the stability and rigidity of the overall structure. The first and second extension frames, formed by the connecting frame extending outwards from the gearbox body, not only facilitate external connections but also enhance the structure's torsional resistance and improve structural stability through an asymmetrical design.

[0012] This invention further comprises: the gearbox includes an input bevel gear and an output bevel gear. The input bevel gear is connected to an input shaft inside the gearbox, and the output bevel gear is connected to an output shaft inside the gearbox and meshes with the input bevel gear. The input bevel gear, connected to the input shaft inside the gearbox and meshing with the output bevel gear, enables smooth and efficient power transmission. The meshing method of the bevel gears ensures reduced energy loss during transmission, thereby improving overall transmission efficiency. The meshing transmission of the bevel gears has good stability and reliability, ensuring smooth operation of the gearbox under high-speed or heavy-load conditions, helping to reduce vibration and noise, and improving the user experience.

[0013] This invention is further configured such that the top cover is provided with a copper vent plug and an internal hexagonal plug. The copper vent plug design aids in heat management within the gearbox. It allows air circulation between the inside and outside of the gearbox, effectively dissipating heat and preventing overheating due to prolonged operation. This helps maintain the gearbox's operating temperature within a suitable range, ensuring the stability and lifespan of internal components. The vent plug also helps balance the internal pressure of the gearbox. As the operating temperature changes, the internal air pressure fluctuates. The vent plug can release or draw in air, maintaining stable internal pressure and preventing damage to the gearbox structure due to pressure changes. The internal hexagonal plug design facilitates maintenance and repair. When inspection or repair of the gearbox's interior is required, the internal gearbox can be easily accessed by removing the internal hexagonal plug without removing the entire top cover.

[0014] This invention is further configured as follows: a first outer skeleton double-lip oil seal is provided between the input shaft and the first housing cover; a second outer skeleton double-lip oil seal is provided between the first output shaft and the second housing cover; and a third outer skeleton double-lip oil seal is provided between the second output shaft and the housing. The design of the outer skeleton double-lip oil seal effectively prevents lubricating oil leakage inside the gearbox and also prevents external dust, moisture, and other contaminants from entering the gearbox. This dual protection ensures the gearbox's sealing performance, thereby protecting key components such as internal gears and bearings and extending their service life. Due to the excellent sealing effect of the oil seal, the gearbox can maintain a stable internal environment during operation, reducing the risk of failure caused by lubricating oil leakage or external contaminant intrusion, helping to improve the overall operational stability of the gearbox and ensuring reliable operation even in harsh working environments. The use of the skeleton double-lip oil seal can reduce lubricating oil consumption and replacement frequency, lowering maintenance costs. Simultaneously, due to the effective protection of the oil seal, the wear rate of internal parts is slowed down, thereby reducing the frequency of repair and parts replacement.

[0015] This invention is further configured such that multiple connecting holes are symmetrically arranged on the first and second extension frames. These symmetrically arranged connecting holes provide greater flexibility for gearbox installation. These connecting holes can accommodate different installation requirements, allowing the gearbox to be easily connected to various external devices and structures. Whether for fixed or movable installation, appropriate connecting holes can be selected. The symmetrical arrangement of the connecting holes ensures better stability and balance of the installed gearbox, helping to reduce vibration and misalignment, thereby improving the gearbox's working accuracy and reliability. Simultaneously, stable installation also contributes to improved operational safety. The design of multiple connecting holes also considers potential future expansion needs; if additional equipment or functions are required, they can be easily connected and integrated through these connecting holes, thus improving the gearbox's compatibility and scalability.

[0016] This invention is further characterized by a reinforcing rib between the first extension frame and the housing. The reinforcing rib significantly improves the structural strength at the connection between the first extension frame and the housing, making the gearbox more stable under heavy loads or external impacts, effectively preventing deformation or damage due to insufficient strength. The reinforcing rib not only increases the structural strength but also improves the overall rigidity. This increased rigidity helps reduce vibration and deformation of the gearbox during operation, thereby maintaining higher working accuracy and stability.

[0017] This invention is further configured such that an internal hexagonal magnetic oil plug is provided between the second extension frame and the first output shaft. The design of the internal hexagonal magnetic oil plug makes maintenance and inspection of the gearbox's lubrication system more convenient. The oil plug can be easily removed and installed, facilitating the replacement or replenishment of lubricating oil and the inspection of oil conditions. The magnetic oil plug can adsorb and collect metal particles and other impurities in the lubricating oil, helping to maintain the cleanliness of the lubricating oil, reducing wear on gears and bearings caused by impurities, extending their service life, and improving the overall operating efficiency of the gearbox. The internal hexagonal magnetic oil plug has excellent sealing performance, effectively preventing lubricating oil leakage, ensuring a stable amount of lubricating oil inside the gearbox, helping to maintain the normal operation of the gearbox, and reducing the risk of failure due to insufficient lubricating oil.

[0018] This invention is further configured such that the first cover, the second cover, and the top cover are all connected to the gearbox body by bolts. Through bolted connections, the first cover, the second cover, and the top cover form a robust structural unit with the gearbox body, ensuring a tight fit between the components and effectively resisting external impacts and vibrations, thereby improving the overall stability of the gearbox. Bolted connections are a detachable connection method, allowing for convenient disassembly and reassembly when maintenance or component replacement is required. This design greatly simplifies the maintenance process and reduces maintenance costs and time.

[0019] The advantages of this utility model are: the adjacent arrangement of the first and second sides, and the rational arrangement of the first and second housing covers, make the entire gearbox structure compact and space-efficient. The input shaft extends from the first housing cover, while the output shaft, including the first and second output shafts, extends from the second housing cover and other parts of the housing, respectively. This not only facilitates connection with external equipment but also makes the entire transmission system more flexible and efficient. The coaxial arrangement of the input and second output shafts helps reduce energy loss during transmission and improves transmission efficiency. Furthermore, the vertical arrangement of the input and output shafts further optimizes the transmission path, making power transmission more direct and efficient. The connecting frame is integrally formed with the housing, enhancing the stability and rigidity of the overall structure. The first and second extension frames, formed by the connecting frame extending outwards from the housing, not only facilitate external connections but also enhance the structure's torsional resistance and improve structural stability through an asymmetrical design. Attached Figure Description

[0020] Figure 1 This is an isometric view of the present invention;

[0021] Figure 2 This is a cross-sectional view of the gearbox in one embodiment of the present invention.

[0022] In the diagram: 1. Housing; 11. First cover; 12. Second cover; 13. Top cover; 131. Copper vent plug; 132. Socket hexagon plug; 14. Socket hexagon magnetic oil plug; 2. Input shaft; 4. Input bevel gear; 5. Output bevel gear; 6. Output shaft; 61. First output shaft; 62. Second output shaft; 7. Connecting frame; 71. First extension frame; 72. Second extension frame; 73. Connecting hole; 81. First outer skeleton double-lip oil seal; 82. Second outer skeleton double-lip oil seal; 83. Third outer skeleton double-lip oil seal; 9. Reinforcing rib. Detailed Implementation

[0023] In the description of this embodiment, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] Example 1:

[0026] Reference Figure 1 , Figure 2 A grain harvester roller gearbox, comprising:

[0027] Box 1, wherein the box 1 is provided with a first side and a second side arranged adjacent to each other;

[0028] The first box cover 11 is set on the first side of the box body 1;

[0029] The second box cover 12 protrudes from the second side of the box body 1;

[0030] The input shaft 2 is rotatably connected to the housing 1, and one end of the input shaft 2 extends from the first housing cover 11 to the outside of the housing 1.

[0031] The output shaft 6 is rotatably connected to the housing 1. The output shaft 6 includes a first output shaft 61 and a second output shaft 62. One end of the first output shaft 61 extends out of the housing 1 through the second housing cover 12, and one end of the second output shaft 62 extends out of the housing 1. The second output shaft 62 is coaxially arranged with the input shaft 2.

[0032] The input shaft 2 and the output shaft 6 are connected by a drive and are arranged perpendicularly. The housing 1 is also provided with a top cover 13 and a connecting frame 7. The top cover 13, the first housing cover 11 and the second housing cover 12 are adjacent to each other. The connecting frame 7 is arranged opposite to the top cover 13 and is integrally formed with the housing 1. The connecting frame 7 extends outward from the housing 1 to form a first extension frame 71 away from the output shaft 6 and a second extension frame 72 close to the output shaft 6. The projected area of ​​the first extension frame 71 on the plane where the top cover 13 is located is greater than the projected area of ​​the second extension frame 72 on the plane where the top cover 13 is located.

[0033] In this embodiment, the rational arrangement of the adjacent first and second sides, as well as the first and second housing covers 11 and 12, makes the entire gearbox structure compact and space-efficient. The input shaft 2 extends from the first housing cover 11, while the output shaft 6, including the first output shaft 61 and the second output shaft 62, extends from the second housing cover 12 and other parts of the housing 1, respectively. This not only facilitates connection to external equipment but also makes the entire transmission system more flexible and efficient. The input shaft 2 and the second output shaft 62 are coaxially arranged, which helps reduce energy loss during transmission and improve transmission efficiency. Simultaneously, the vertical arrangement of the input shaft 2 and the output shaft 6 further optimizes the transmission path, making power transmission more direct and efficient. The connecting frame 7 is integrally formed with the housing 1, enhancing the stability and rigidity of the overall structure. The first extension frame 71 and the second extension frame 72, extending outward from the housing 1, not only facilitate external connections but also enhance the structure's torsional resistance and improve structural stability through an asymmetrical design.

[0034] refer to Figure 2 The gearbox further includes an input bevel gear 4 and an output bevel gear 5. The input bevel gear 4 is connected to an input shaft 2 inside the gearbox housing 1, and the output bevel gear 5 is connected to an output shaft 6 inside the gearbox housing 1 and meshes with the input bevel gear 4. The connection of the input bevel gear 4 to the input shaft 2 inside the gearbox housing 1 and its meshing with the output bevel gear 5 enables smooth and efficient power transmission. The meshing method of the bevel gears ensures reduced energy loss during transmission, thereby improving overall transmission efficiency. The meshing transmission of bevel gears has good stability and reliability, ensuring smooth operation of the gearbox under high-speed or heavy-load conditions, helping to reduce vibration and noise, and improving the user experience.

[0035] refer to Figure 1 , Figure 2 The top cover 13 is equipped with a copper vent plug 131 and an internal hexagon plug 132. The copper vent plug 131 is designed to facilitate heat management inside the gearbox. It allows air circulation between the inside and outside of the gearbox 1, effectively dissipating heat and preventing overheating due to prolonged operation. This helps maintain the gearbox's operating temperature within a suitable range, ensuring the stability and lifespan of internal components. The vent plug also helps balance the pressure inside the gearbox. As the operating temperature changes, the air pressure inside the gearbox 1 fluctuates. The vent plug can release or draw in air, maintaining stable pressure inside the gearbox 1 and preventing damage to the gearbox structure due to pressure changes. The internal hexagon plug 132 facilitates maintenance and repair. When inspection or repair of the gearbox's interior is required, the internal gearbox 1 can be easily accessed by removing the internal hexagon plug 132 without removing the entire top cover 13.

[0036] A first external skeleton double-lip oil seal 81 is provided between the input shaft 2 and the first housing cover 11; a second external skeleton double-lip oil seal 82 is provided between the first output shaft 61 and the second housing cover 12; and a third external skeleton double-lip oil seal 83 is provided between the second output shaft 62 and the housing 1. The design of the external skeleton double-lip oil seal effectively prevents lubricating oil leakage inside the gearbox and also prevents external dust, moisture, and other contaminants from entering the gearbox. This dual protection ensures the gearbox's sealing performance, thereby protecting key components such as gears and bearings and extending their service life. Due to the excellent sealing effect of the oil seal, the gearbox maintains a stable internal environment during operation, reducing the risk of failure caused by lubricating oil leakage or external contaminant intrusion. This helps improve the overall operational stability of the gearbox and ensures reliable operation even in harsh working environments. The use of the skeleton double-lip oil seal reduces lubricating oil consumption and replacement frequency, lowering maintenance costs. Simultaneously, due to the effective protection of the oil seal, the wear rate of internal parts is slowed down, thereby reducing the frequency of repair and parts replacement.

[0037] In one embodiment of this utility model, the first extension frame 71 and the second extension frame 72 are symmetrically provided with a plurality of connection holes 73. The symmetrical arrangement of the multiple connection holes 73 provides greater flexibility for the installation of the gearbox. These connection holes 73 can adapt to different installation requirements, allowing the gearbox to be easily connected to various external devices and structures. Whether it is a fixed installation or a movable installation, it can be achieved by selecting appropriate connection holes 73. By symmetrically arranging the connection holes 73, better stability and balance of the installed gearbox can be ensured, helping to reduce vibration and misalignment, thereby improving the working accuracy and reliability of the gearbox. At the same time, stable installation also helps to improve operational safety. The design of multiple connection holes 73 also takes into account possible future expansion needs. If it is necessary to add other equipment or functions, these connection holes 73 can be used for convenient connection and integration, thereby improving the compatibility and scalability of the gearbox.

[0038] Preferably, a reinforcing rib 9 is provided between the first extension frame 71 and the housing 1. The design of the reinforcing rib 9 significantly improves the structural strength of the connection between the first extension frame 71 and the housing 1, making the gearbox more stable when subjected to heavy loads or external impacts, and effectively preventing deformation or damage due to insufficient strength. The reinforcing rib 9 not only increases the structural strength but also improves the overall rigidity. The increased rigidity helps reduce the vibration and deformation of the gearbox during operation, thereby maintaining higher working accuracy and stability.

[0039] In one embodiment of this utility model, an internal hexagonal magnetic oil plug 14 is provided between the second extension frame 72 and the first output shaft 61. The design of the internal hexagonal magnetic oil plug 14 makes maintenance and inspection of the gearbox's lubrication system more convenient. The plug can be easily removed and installed, facilitating lubricant replacement or replenishment, and checking the oil condition. The magnetic oil plug can adsorb and collect metal particles and other impurities in the lubricating oil, helping to maintain its cleanliness, reducing wear on gears and bearings, extending their service life, and improving the overall operating efficiency of the gearbox. The internal hexagonal magnetic oil plug 14 has excellent sealing performance, effectively preventing lubricant leakage, ensuring a stable amount of lubricating oil inside the gearbox, helping to maintain the normal operation of the gearbox, and reducing the risk of failure due to insufficient lubricating oil.

[0040] In one embodiment of this utility model, the first cover 11, the second cover 12, and the top cover 13 are all connected to the gearbox body 1 by bolts. Through bolted connections, the first cover 11, the second cover 12, and the top cover 13 form a robust structural unit with the gearbox body 1, ensuring a tight fit between the components and effectively resisting external impacts and vibrations, thereby improving the overall stability of the gearbox. Bolted connections are a detachable connection method, allowing for convenient disassembly and reassembly when maintenance or component replacement is required. This design greatly simplifies the maintenance process and reduces maintenance costs and time.

[0041] The above description of the specific embodiments of this utility model is only used to further illustrate this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-essential improvements and adjustments made to this utility model by technical engineers based on the above description of the utility model shall fall within the scope of protection of this utility model.

Claims

1. A drum gearbox for a grain harvester, characterized in that, include: A housing, wherein a first side and a second side are arranged adjacent to each other; The first lid is located on the first side of the box body; The second lid protrudes from the second side of the box body; An input shaft is rotatably connected to the housing, with one end of the input shaft extending from the first housing cover to the outside of the housing. An output shaft is rotatably connected to the housing. The output shaft includes a first output shaft and a second output shaft. One end of the first output shaft extends out of the housing from the second housing cover, and one end of the second output shaft extends out of the housing. The second output shaft is coaxially arranged with the input shaft. The input shaft and output shaft are connected by a drive and are arranged perpendicularly. The housing is also provided with a top cover and a connecting frame. The top cover, the first housing cover, and the second housing cover are adjacent to each other. The connecting frame is arranged opposite to the top cover and is integrally formed with the housing. The connecting frame extends outward from the housing to form a first extension frame away from the output shaft and a second extension frame close to the output shaft. The projected area of ​​the first extension frame on the plane of the top cover is greater than the projected area of ​​the second extension frame on the plane of the top cover.

2. The grain harvester drum gearbox according to claim 1, characterized in that, The gearbox also includes an input bevel gear and an output bevel gear. The input bevel gear is connected to an input shaft inside the gearbox, and the output bevel gear is connected to an output shaft inside the gearbox and meshes with the input bevel gear.

3. A grain harvester drum gearbox according to claim 1 or 2, characterized in that, The top cover is equipped with a copper vent plug and an internal hexagonal plug.

4. The grain harvester drum gearbox according to claim 3, characterized in that, A first outer skeleton double-lip oil seal is provided between the input shaft and the first housing cover, a second outer skeleton double-lip oil seal is provided between the first output shaft and the second housing cover, and a third outer skeleton double-lip oil seal is provided between the second output shaft and the housing.

5. The grain harvester drum gearbox according to claim 4, characterized in that, The first extension frame and the second extension frame are symmetrically provided with multiple connection holes.

6. The grain harvester drum gearbox according to claim 5, characterized in that, The first extension frame is provided with reinforcing ribs between itself and the box body.

7. A grain harvester drum gearbox according to claim 6, characterized in that, An internal hexagonal magnetic plug is provided between the second extension frame and the first output shaft.

8. The grain harvester drum gearbox according to claim 3, characterized in that, The first box cover, the second box cover, and the top cover are all connected to the box body by bolts.

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