Agricultural machinery wheel edge driving device

Abstract

The utility model provides an agricultural machinery wheel edge drive arrangement, including the casing, the casing is rotatively connected with input shaft and drive shaft, is fixed with first gear on input shaft, is fixed with second gear on drive shaft, first gear and second gear engage, input shaft's first end stretches out one side of casing and is equipped with the transmission structure that can be used for power transmission, drive shaft's second end extends to the casing outside from the other side of casing, and drive shaft's second end is fixed with the rim mounting part, adopt the utility model, input shaft and drive shaft in the casing are separated from each other, make the casing avoid the position of input shaft to have the surplus space and install on the frame of agricultural machinery, avoided the half axle assembly to bear the weight, input shaft is driven to drive shaft through gear reduction, thereby transmission capacity is not affected by the whole machine weight, and transmission is reliable, and it is convenient for adapting the large -scale agricultural machinery of big spoke.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery drive system technology, specifically to an agricultural machinery wheel-side drive device. Background Technology

[0002] Currently, most harvesting machines weigh less than 25 tons, with very few exceeding 25 tons. The market share of large harvesting machines is small, largely due to the lack of drive systems compatible with large agricultural machinery weighing over 25 tons.

[0003] After the engine power is reduced in speed and increased in torque within the gearbox, it is divided into left and right power paths via the central drive assembly, differential, and other devices, and then transmitted to the half-shaft assembly. Two symmetrical drive units are then needed to transmit power to the wheels. Currently, the wheel-side drive units are coaxially arranged with the half-shaft assembly, meaning the power from the half-shaft assembly is transmitted almost directly to the tires in a one-to-one ratio. The transmission capacity is directly affected by the weight of the entire machine. At the same time, the half-shaft assembly also bears part of the machine's weight, making it unsuitable for large agricultural machinery with large wheel spokes and a weight exceeding 25 tons. Utility Model Content

[0004] To solve at least one of the above technical problems, this utility model provides a wheel-side drive device for agricultural machinery.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: This utility model provides an agricultural machinery wheel-side drive device, including a housing. An input shaft and a drive shaft are rotatably connected inside the housing. A first gear is fixed on the input shaft, and a second gear is fixed on the drive shaft. The first gear and the second gear mesh. The first end of the input shaft extends out of one side of the housing and is provided with a transmission structure for power transmission. The second end of the drive shaft extends from the other side of the housing to the outside of the housing, and a wheel rim mounting component is fixed to the second end of the drive shaft.

[0006] The beneficial effects of this utility model are: By employing this utility model, the input shaft and drive shaft within the housing are separated from each other, eliminating the need for coaxial installation with the half-shaft assembly of the agricultural machinery. This allows the housing to be installed on the frame of the agricultural machinery with ample space, avoiding the input shaft and preventing the half-shaft assembly from bearing weight. Simultaneously, after the power from the half-shaft assembly is transmitted to the input shaft, it is then transmitted to the drive shaft via gear reduction. Thus, the transmission capacity is not affected by the weight of the entire machine, ensuring reliable transmission and making it suitable for large agricultural machinery with large spokes and a weight exceeding 25 tons.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] Furthermore, the rim mounting component is a flange, on which a plurality of rim mounting bolts for mounting the rim are provided, and the rim mounting bolts are evenly distributed along the circumference of the flange.

[0009] The design features an enlarged flange and uses multiple rim mounting bolts to secure the rim, resulting in high strength and reliable installation.

[0010] Furthermore, the flange has a positioning boss on the side near the housing, the rim mounting bolt is a round head bolt, and one side of the head of the rim mounting bolt has a cutting surface, which is used to contact and limit the positioning boss.

[0011] When installing the wheel rim, the threaded end of the wheel rim mounting bolt passes through the wheel rim and is fixed by the nut. The cut surface contacts the outer circumference of the positioning boss, which can prevent the wheel rim mounting bolt from rotating. No other tools are needed to fix the wheel rim mounting bolt during disassembly and assembly, making disassembly and assembly convenient and also providing a certain anti-loosening effect.

[0012] Furthermore, the flange has a stop on the side away from the housing.

[0013] The stop can be used to fix the wheel rim, improving the stability of the wheel rim installation; at the same time, the stop can be used for positioning when installing the wheel rim, making installation convenient.

[0014] Furthermore, the flange is integrally formed with the drive shaft, and the first end of the drive shaft extends into the housing from the other side of the housing and passes through the second gear.

[0015] The connection strength between the flange and the drive shaft is improved, making it easier to withstand the weight of the entire vehicle and ensuring high reliability.

[0016] Furthermore, both ends of the drive shaft are connected to the housing via tapered bearings, and the middle part of the drive shaft is connected to the second gear via a spline.

[0017] This design facilitates symmetrical force distribution at both ends of the drive shaft, resulting in minimal deflection and high load-bearing capacity. Additionally, the second gear is detachable, reducing maintenance costs.

[0018] Furthermore, a retaining ring is provided between the tapered bearing at the first end of the drive shaft and the second gear. One end of the retaining ring abuts against the second gear, and the other end of the retaining ring abuts against one end of the inner ring of the tapered bearing. The first end of the drive shaft is also provided with an anti-loosening nut, which abuts against the other end of the inner ring of the corresponding tapered bearing.

[0019] The retaining ring maintains the clearance between the second gear and the tapered bearing, preventing axial movement of the second gear and ensuring reliable operation. The retaining ring and anti-loosening nut also help prevent axial movement of the drive shaft, ensuring high reliability.

[0020] Furthermore, the other side of the housing is provided with a detachable side cover, the first end of the drive shaft extends through the side cover into the housing, and the second end of the drive shaft is connected to the side cover via a tapered bearing.

[0021] When the side cover is removed, the input shaft, the first gear, the drive shaft, and the second gear can be fully exposed, making disassembly and assembly convenient and maintenance costs low.

[0022] Furthermore, the first end of the input shaft is rotatably connected to the housing, the second end of the input shaft is rotatably connected to the side cover, and the first gear is located in the middle of the input shaft.

[0023] This facilitates symmetrical force distribution at both ends of the input shaft, thereby improving load-bearing capacity.

[0024] Furthermore, the first gear is integrally formed with the input shaft.

[0025] It improves the connection strength between the first gear and the input shaft, resulting in a longer service life. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of this utility model.

[0027] Figure 2 for Figure 1 A sectional view along the AA direction.

[0028] In the accompanying drawings, the technical features represented by each reference numeral are as follows: 1-Housing; 2-Input shaft; 3-Drive shaft; 4-First gear; 5-Second gear; 6-Flange; 7-Rim mounting bolt; 8-Positioning boss; 9-Cut surface; 10-Stop; 11-Tapered bearing; 12-Retaining ring; 13-Anti-loosening nut; 14-Side cover. Detailed Implementation

[0029] 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.

[0030] This utility model refers to Figure 1-2 .

[0031] This utility model provides a wheel-side drive device for agricultural machinery, including a housing 1. An input shaft 2 and a drive shaft 3 are rotatably connected inside the housing 1. A first gear 4 is fixed on the input shaft 2, and a second gear 5 is fixed on the drive shaft 3. The first gear 4 and the second gear 5 mesh. The first end of the input shaft 2 extends out of one side of the housing 1 and is provided with a transmission structure for power transmission. The second end of the drive shaft 3 extends from the other side of the housing 1 to the outside of the housing 1, and a wheel rim mounting component is fixed to the second end of the drive shaft 3.

[0032] principle: During installation, housing 1 can be fixed to the frame of agricultural machinery or the housing of the half-shaft assembly; input shaft 2 is connected to the output shaft of the half-shaft assembly through a transmission structure. Specifically, the transmission structure can be an external spline, etc., and is connected to the output shaft of the half-shaft assembly through a spline sleeve; the rim mounting component of drive shaft 3 is used to fix the rim, and the tire is fixed on the rim.

[0033] During operation, the power from the half-shaft assembly is transmitted to the input shaft 2, and then to the drive shaft 3 via the first gear 4 and the second gear 5. The drive shaft 3 drives the tire to rotate via the wheel rim mounting components. The transmission ratio of the first gear 4 and the second gear 5 is designed based on the influence of the machine's weight on the transmission resistance, ensuring reliable transmission from the input shaft 2 to the drive shaft 3. This design is suitable for various agricultural machinery, especially large harvesters weighing over 25 tons.

[0034] By employing this utility model, the input shaft 2 and drive shaft 3 within the housing 1 are separated from each other, eliminating the need for coaxial installation with the half-shaft assembly of the agricultural machinery. This allows the housing 1 to have ample space to be installed on the frame of the agricultural machinery, avoiding the position of the input shaft 2, and preventing the half-shaft assembly from bearing weight. At the same time, after the power from the half-shaft assembly is transmitted to the input shaft 2, it is then transmitted to the drive shaft 3 through gear reduction. Thus, the transmission capacity is not affected by the weight of the entire machine, ensuring reliable transmission and making it easy to adapt to large agricultural machinery with large spokes and a weight exceeding 25 tons.

[0035] Furthermore, the rim mounting component is a flange 6, on which a plurality of rim mounting bolts 7 for mounting the rim are provided, and the rim mounting bolts 7 are evenly distributed along the circumference of the flange 6.

[0036] The design adopts an enlarged flange 6 and uses multiple rim mounting bolts 7 to fix the rim, resulting in high strength and good installation reliability.

[0037] Furthermore, the flange 6 is provided with a positioning boss 8 on the side near the housing 1, the rim mounting bolt 7 is a round head bolt, and a cutting surface 9 is provided on one side of the head of the rim mounting bolt 7. The cutting surface 9 is used to contact and limit the positioning boss 8.

[0038] Note: Cutting surface 9 can be formed by milling.

[0039] When installing the wheel rim, the threaded end of the wheel rim mounting bolt 7 passes through the wheel rim and is fixed by the nut. The cutting surface 9 contacts the outer peripheral side of the positioning boss 8, which can prevent the wheel rim mounting bolt 7 from rotating. No other tools are needed to fix the wheel rim mounting bolt 7 during disassembly and assembly, making disassembly and assembly convenient and also providing a certain anti-loosening effect.

[0040] Furthermore, the flange 6 is provided with a stop 10 on the side away from the housing 1.

[0041] Note: Stop 10 is a common term in the tire industry, which is a ring-shaped limiting protrusion. Stop 10 on the rim is generally used to fix the tire, and stop 10 on the flange 6 is used to fix the rim.

[0042] The stop 10 can be used to fix the wheel rim, improving the stability of the wheel rim installation; at the same time, the stop 10 can be used for positioning when installing the wheel rim, making installation convenient.

[0043] Furthermore, the flange 6 is integrally formed with the drive shaft 3, and the first end of the drive shaft 3 extends into the housing 1 from the other side of the housing 1 and passes through the second gear 5.

[0044] Note: The flange 6 and the drive shaft 3 are machined from the same forging, thus forming an integral piece.

[0045] The connection strength between flange 6 and drive shaft 3 has been improved, making it easier to withstand the weight of the entire vehicle and ensuring high reliability.

[0046] Furthermore, both ends of the drive shaft 3 are connected to the housing 1 via tapered bearings 11, and the middle part of the drive shaft 3 is connected to the second gear 5 via a spline.

[0047] This design facilitates symmetrical force distribution at both ends of the drive shaft 3, resulting in minimal deflection and high load-bearing capacity. Additionally, the second gear 5 is detachable, minimizing maintenance costs.

[0048] Furthermore, a retaining ring 12 is provided between the tapered bearing 11 at the first end of the drive shaft 3 and the second gear 5. One end of the retaining ring 12 abuts against the second gear 5, and the other end of the retaining ring 12 abuts against one end of the inner ring of the tapered bearing 11. The first end of the drive shaft 3 is also provided with an anti-loosening nut 13, which abuts against the other end of the inner ring of the corresponding tapered bearing 11.

[0049] Note: By default, the lock nut 13 is threadedly connected to the drive shaft 3.

[0050] The retaining ring 12 maintains the clearance between the second gear 5 and the tapered bearing 11, preventing axial movement of the second gear 5 and ensuring reliable operation of the second gear 5. The retaining ring 12 and the anti-loosening nut 13 also help prevent axial movement of the drive shaft 3, ensuring good reliability.

[0051] Furthermore, a detachable side cover 14 is provided on the other side of the housing 1, the first end of the drive shaft 3 extends into the housing 1 through the side cover 14, and the second end of the drive shaft 3 is connected to the side cover 14 through a tapered bearing 11.

[0052] Preferably, the side cover 14 is bolted to the housing 1. Furthermore, the side cover 14 can be considered part of the housing 1, so the second end of the drive shaft 3 is connected to the side cover 14 via a tapered bearing 11, that is, connected to the housing 1 via a tapered bearing 11.

[0053] When the side cover 14 is removed, the input shaft 2, the first gear 4, the drive shaft 3 and the second gear 5 can be fully exposed, making disassembly and assembly convenient and maintenance costs low.

[0054] Furthermore, the first end of the input shaft 2 is rotatably connected to the housing 1, the second end of the input shaft 2 is rotatably connected to the side cover 14, and the first gear 4 is located in the middle of the input shaft 2.

[0055] Preferably, the first end of the input shaft 2 is connected to the housing 1 via a tapered bearing 11, and the second end of the input shaft 2 is connected to the side cover 14 via a tapered bearing 11.

[0056] This facilitates symmetrical force distribution at both ends of the input shaft 2, thereby improving its load-bearing capacity.

[0057] Furthermore, the first gear 4 is integrally formed with the input shaft 2.

[0058] Note: The first gear 4 and the input shaft 2 are machined from the same shaft forging, thus forming an integral piece.

[0059] The connection strength between the first gear 4 and the input shaft 2 is improved, resulting in a longer service life.

[0060] 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.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] 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.

[0066] 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. An agricultural machine wheel drive apparatus, characterized by: The device includes a housing (1), in which an input shaft (2) and a drive shaft (3) are rotatably connected. A first gear (4) is fixed on the input shaft (2), and a second gear (5) is fixed on the drive shaft (3). The first gear (4) meshes with the second gear (5). The first end of the input shaft (2) extends out of one side of the housing (1) and is provided with a transmission structure that can be used for power transmission. The second end of the drive shaft (3) extends from the other side of the housing (1) to the outside of the housing (1), and a rim mounting component is fixed to the second end of the drive shaft (3).

2. The agricultural machine wheel drive of claim 1, wherein: The rim mounting component is a flange (6), and the flange (6) is provided with a plurality of rim mounting bolts (7) for mounting the rim. The rim mounting bolts (7) are evenly distributed along the circumference of the flange (6).

3. The agricultural machine wheel drive of claim 2, wherein: The flange (6) has a positioning boss (8) on the side near the housing (1). The rim mounting bolt (7) is a round head bolt. The head of the rim mounting bolt (7) has a cutting surface (9) on one side. The cutting surface (9) is used to contact and limit the positioning boss (8) with the outer periphery.

4. The agricultural machine wheel drive of claim 2, wherein: The flange (6) has a stop (10) on the side away from the housing (1).

5. The agricultural machine wheel drive of claim 2, wherein: The flange (6) is integrally formed with the drive shaft (3), and the first end of the drive shaft (3) extends into the housing (1) from the other side of the housing (1) and passes through the second gear (5).

6. The agricultural machine wheel drive of claim 5, wherein: Both ends of the drive shaft (3) are connected to the housing (1) via tapered bearings (11), and the middle part of the drive shaft (3) is connected to the second gear (5) via a spline.

7. The agricultural machine wheel drive of claim 6, wherein: A retaining ring (12) is provided between the tapered bearing (11) at the first end of the drive shaft (3) and the second gear (5). One end of the retaining ring (12) abuts against the second gear (5), and the other end of the retaining ring (12) abuts against one end of the inner ring of the tapered bearing (11). The first end of the drive shaft (3) is also provided with an anti-loosening nut (13), which abuts against the other end of the inner ring of the corresponding tapered bearing (11).

8. The agricultural machine wheel drive of claim 6, wherein: The other side of the housing (1) is provided with a detachable side cover (14). The first end of the drive shaft (3) extends into the housing (1) through the side cover (14), and the second end of the drive shaft (3) is connected to the side cover (14) through a tapered bearing (11).

9. The agricultural machinery wheel-side drive device according to claim 8, characterized in that: The first end of the input shaft (2) is rotatably connected to the housing (1), the second end of the input shaft (2) is rotatably connected to the side cover (14), and the first gear (4) is located in the middle of the input shaft (2).

10. The agricultural machinery wheel-side drive device according to any one of claims 1-9, characterized in that: The first gear (4) is integrally formed with the input shaft (2).

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