Transmission mechanism, adjusting method of transmission mechanism and agricultural machine

Abstract

The invention belongs to the technical field of operation machinery, and particularly relates to a transmission mechanism, an adjusting method of the transmission mechanism and agricultural machinery. The transmission gear is axially provided with a mounting hole in a penetrating manner, the transmission shaft can be inserted into the mounting hole, the transmission gear comprises a first connecting section and a second connecting section which are sequentially connected in the axial direction, and the first connecting section sleeves the transmission shaft and is in driving connection with the transmission shaft; the adjusting cover is inserted into the second connecting section, and the axial position of the adjusting cover in the second connecting section can be adjusted; the fastening assembly is sequentially connected with the adjusting cover and the transmission shaft in a penetrating mode and locks the transmission shaft and the adjusting cover, and when the fastening assembly is detached, the axial position of the adjusting cover relative to the second connecting section is adjusted, and the axial position of the transmission gear relative to the transmission shaft is adjusted so that the transmission shaft can abut against the adjusting cover. By the adoption of the transmission mechanism, the axial position of the transmission gear can be adjusted in a simpler mode, and the adjusting efficiency is improved.

Description

Technical Field

[0001] This application belongs to the technical field of construction machinery, and particularly relates to a transmission mechanism, an adjustment method of the transmission mechanism, and an agricultural machine. Background Art

[0002] There are usually many gear transmission components in agricultural machines. As precise transmission components, gears need to maintain a high coplanarity during the meshing transmission process. Otherwise, there will be problems such as poor contact, accelerated wear, high transmission noise, and low transmission efficiency.

[0003] When adjusting the coplanarity of two meshing gears, it is usually necessary to remove the gears from the drive shaft and then add gaskets with specific thicknesses to adjust the coplanarity of the two gears. However, this adjustment structure requires washers with specific inner diameters and thicknesses.

[0004] In the prior art, there is a structure that adjusts the axial position of gears through a complex transmission structure. However, the above structure occupies a large space and has a high cost, and is usually applied to adjust the position of large sprocket gears, and it is difficult to adjust the coplanarity of two small meshing transmission gears. Summary of the Invention

[0005] The purpose of this application is to provide a transmission mechanism, an adjustment method of the transmission mechanism, and an agricultural machine, so as to adjust the axial position of the transmission gear with a simpler and more compact mechanism.

[0006] To achieve the above purpose, on the one hand, this application provides a transmission mechanism, which includes:

[0007] A drive shaft;

[0008] A transmission gear, which is axially penetrated with an installation hole for inserting the drive shaft. The transmission gear includes a first connection section and a second connection section that are axially connected in sequence. The first connection section is sleeved on the drive shaft and is drivingly connected to the drive shaft;

[0009] An adjustment cover, which is inserted into the second connection section, and the axial position of the adjustment cover in the second connection section is adjustable;

[0010] A fastening assembly, which sequentially penetrates and connects the adjustment cover and the drive shaft and locks the drive shaft and the adjustment cover. When the fastening assembly is removed, by adjusting the axial position of the adjustment cover relative to the second connection section and adjusting the axial position of the transmission gear relative to the drive shaft, the drive shaft and the adjustment cover are abutted.

[0011] In some embodiments, the outer periphery of the adjustment cover is threadedly connected to the inner wall of the second connection section, and the inner diameter of the second connection section is greater than the outer diameter of the drive shaft.

[0012] In some embodiments, a threaded hole is provided at one end of the transmission shaft facing the adjustment cover. The adjustment cover is further provided with a plurality of through holes axially, and the fastening assembly sequentially passes through one of the through holes and the threaded hole.

[0013] In some embodiments, the plurality of through holes are evenly spaced along the circumferential direction of the adjustment cover and are symmetrically arranged around the center of the adjustment cover.

[0014] In some embodiments, the transmission mechanism further includes: an adjustment assembly. The adjustment assembly can pass through any two through holes, and the adjustment assembly is used to apply a rotational driving force to the adjustment cover to drive the adjustment cover to rotate threadedly relative to the second connection section.

[0015] In some embodiments, the end of the transmission shaft has an external spline, and the first connection section has an internal spline. The internal spline is sleeved on the external spline.

[0016] The second aspect of the present invention provides an adjustment method for a transmission mechanism. The adjustment method is applied to the above-mentioned transmission mechanism, and the adjustment method includes: removing the fastening assembly; adjusting the axial position of the adjustment cover relative to the second connection section; adjusting the position of the transmission gear relative to the transmission shaft so that the transmission shaft abuts against the adjustment cover; locking the adjustment cover and the transmission shaft through the fastening assembly.

[0017] In some embodiments, the outer periphery of the adjustment cover has an external thread, and the second connection section has an internal thread. The step of adjusting the position of the adjustment cover relative to the second connection section includes: obtaining the adjustment distance and adjustment direction of the transmission gear; determining the rotation angle of the adjustment cover according to the adjustment distance; determining the rotation direction of the adjustment cover according to the adjustment direction; rotating the adjustment cover according to the rotation angle and rotation direction.

[0018] In some embodiments, the adjustment cover is further provided with a plurality of through holes axially. The plurality of through holes are evenly spaced along the circumferential direction of the adjustment cover, and the angle between any two adjacent through holes is a unit rotation angle. The step of determining the rotation angle of the adjustment cover according to the adjustment distance includes: determining the theoretical rotation angle of the adjustment cover according to the adjustment distance; determining the multiple relationship between the theoretical rotation angle and the unit rotation angle; determining the actual rotation angle of the adjustment cover according to the multiple relationship and the unit rotation angle.

[0019] The third aspect of the present invention provides an agricultural machine, including the above-mentioned transmission mechanism.

[0020] In the above technical solution, the transmission mechanism includes a transmission shaft, a transmission gear, an adjustment cover, and a fastening assembly. The transmission shaft can be used to transmit the torque conveyed from the outside. The transmission gear is axially provided with an installation hole for inserting the transmission shaft. The transmission gear includes a first connection section and a second connection section connected in sequence along the axis. The first connection section is sleeved on the transmission shaft and can receive the torque output by the transmission shaft. The adjustment cover is inserted into the second connection section, and the axial position of the adjustment cover in the second connection section can be adjusted. The fastening assembly can sequentially connect the adjustment cover and the transmission shaft in series, so that the adjustment cover and the end of the transmission shaft always remain in contact. When the fastening assembly is removed, the axial position of the adjustment cover relative to the second connection section can be adjusted first, and then the axial position of the transmission gear relative to the transmission shaft can be adjusted so that the transmission shaft and the adjustment cover are in contact. Finally, the fastening assembly is used to lock the transmission shaft and the adjustment cover again to lock the transmission gear at a new position on the transmission shaft, realizing the adjustment of the position of the transmission gear. With the above transmission mechanism, the axial position of the transmission gear on the transmission shaft can be adjusted, and the transmission gear does not need to be removed during the adjustment process, simplifying the adjustment steps and improving the adjustment efficiency.

[0021] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent specific embodiment part. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings are used to provide a further understanding of the embodiments of the present application, and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present application, but do not constitute a limitation to the embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts. In the drawings:

[0023] Figure 1 FIG. is a schematic structural diagram of a transmission mechanism according to the first embodiment of the present application;

[0024] Figure 2 FIG. is an exploded schematic structural diagram of a transmission mechanism according to the first embodiment of the present application;

[0025] Figure 3 FIG. is a schematic structural diagram of a transmission shaft according to the first embodiment of the present application;

[0026] Figure 4 FIG. is a schematic structural diagram of a transmission gear according to the first embodiment of the present application;

[0027] Figure 5 FIG. is a schematic structural diagram of an adjustment cover according to the first embodiment of the present application;

[0028] Figure 6 FIG. is a cross-sectional view of a transmission gear in a first relative position according to the first embodiment of the present application;

[0029] Figure 7 A cross-sectional view of the transmission gear at the second relative position according to the first embodiment of the present application;

[0030] Figure 8 A schematic structural diagram of the transmission shaft according to the second embodiment of the present application;

[0031] Figure 9 A schematic structural diagram of the adjusting cover according to the second embodiment of the present application.

[0032] Description of reference numerals

[0033] 100 Transmission mechanism

[0034] 10 Transmission shaft

[0035] 11 Threaded hole

[0036] 12 External spline

[0037] 20 Transmission gear

[0038] 21 First connection section

[0039] 22 Second connection section

[0040] 23 Internal spline

[0041] 30 Adjusting cover

[0042] 31 Through hole

[0043] 311 Central through hole

[0044] 312 Circumferential through hole

[0045] 40 Fastening assembly Detailed description of the specific implementation mode

[0046] The following is a detailed description of the specific implementation mode of the present application in conjunction with the accompanying drawings. It should be understood that the specific implementation mode described here is only used to illustrate and explain the present application, and is not used to limit the present application.

[0047] The following describes the transmission mechanism 100, the adjustment method of the transmission mechanism 100, and the agricultural machinery according to the present application with reference to the accompanying drawings.

[0048] As Figure 1 shown, it is a schematic structural diagram of the transmission mechanism 100 according to the first embodiment of the present application; as Figure 2 shown, it is a schematic exploded view of the transmission mechanism 100 according to the first embodiment of the present application; as Figure 3 shown, it is a schematic structural diagram of the transmission shaft 10 according to the first embodiment of the present application; as Figure 4As shown, it is a schematic structural diagram of the transmission gear 20 provided according to the first embodiment of the present application; as Figure 5 As shown, it is a schematic structural diagram of the adjustment cover 30 provided according to the first embodiment of the present application; as Figure 6 As shown, it is a cross-sectional view of the transmission gear 20 provided according to the first embodiment of the present application at a first relative position; as Figure 7 As shown, it is a cross-sectional view of the transmission gear 20 provided according to the first embodiment of the present application at a second relative position. The transmission mechanism 100 provided by the embodiment of the present application includes:

[0049] A transmission shaft 10;

[0050] A transmission gear 20 is axially penetrated with a mounting hole for the transmission shaft 10 to be inserted. The transmission gear 20 includes a first connection section 21 and a second connection section 22 that are axially connected in sequence. The first connection section 21 is sleeved on the transmission shaft 10 and is drivingly connected to the transmission shaft 10;

[0051] An adjustment cover 30 is inserted into the second connection section 22, and the axial position of the adjustment cover 30 in the second connection section 22 can be adjusted;

[0052] A fastening assembly 40 sequentially passes through the adjustment cover 30 and the transmission shaft 10 and locks the transmission shaft 10 and the adjustment cover 30. When the fastening assembly 40 is removed, by adjusting the axial position of the adjustment cover 30 relative to the second connection section 22 and adjusting the axial position of the transmission gear 20 relative to the transmission shaft 10, the transmission shaft 10 and the adjustment cover 30 are abutted.

[0053] When two gears transmit torque, certain coplanarity requirements need to be met to make the torque transmission more stable. However, when there are errors in the structural design, it is often necessary to adjust the axial position of the gears to ensure the coplanarity requirements. In the prior art, corresponding gaskets are usually machined according to the error value to adjust the position of the gears. However, with this structural form, it is necessary to disassemble the gears and calculate the machining error, which is troublesome to adjust and requires additional machining steps.

[0054] The transmission mechanism 100 provided by the embodiment of the present application includes a transmission shaft 10, a transmission gear 20, an adjustment cover 30, and a fastening assembly 40. The transmission shaft 10 is a columnar structure with a smooth outer wall on its surface. One end of the transmission shaft 10 can be connected to an external power source to receive and transmit power. The first connection section 21 of the transmission gear 20 is sleeved on the other end of the transmission shaft 10 and is drivingly connected to the transmission shaft 10. The transmission shaft 10 can transmit the driving torque to the transmission gear 20, and moreover, the axial position of the transmission gear 20 on the transmission shaft 10 is adjustable. The second connection section 22 of the transmission gear 20 is used to cooperate with the adjustment cover 30. The adjustment cover 30 is inserted into the second connection section 22, and the axial position of the adjustment cover 30 in the second connection section 22 can be adjusted. When it is necessary to adjust the axial position of the transmission gear 20, first remove the fastening assembly 40 so that the adjustment cover 30 and the transmission shaft 10 are no longer locked, and then the axial position of the adjustment cover 30 in the second connection section 22 can be changed. Subsequently, adjust the axial position of the transmission gear 20. Since the adjustment cover 30 cooperates with the second connection section 22 of the transmission gear 20, the movement of the transmission gear 20 will drive the adjustment cover 30 to move axially together. When the transmission gear 20 moves until it abuts against the transmission shaft 10 and the adjustment cover 30, re-thread the fastening assembly 40 through the adjustment cover 30 and the transmission shaft 10 and lock them, thereby realizing the fixation of the new position of the transmission gear 20 on the transmission shaft 10. Among them, the axial adjustment distance adjusted by the adjustment cover 30 is the same as the axial adjustment distance required for the transmission gear 20 to reach the coplanarity requirement. In a specific embodiment, the fastening assembly 40 includes a bolt and a gasket.

[0055] Specifically, as Figure 6 and Figure 7 shown, the position of the transmission shaft 10 always remains fixed, and the adjustment cover 30 and the transmission shaft 10 before and after adjustment are kept in an abutting state. When the position of the adjustment cover 30 in the transmission gear 20 is adjusted from the position in Figure 6 to the position in Figure 7 , the axial position of the transmission gear 20 changes. And after adjustment, the adjustment cover 30 and the transmission shaft 10 are still locked by the fastening assembly 40 to keep the transmission gear 20 stable in the adjusted position.

[0056] By adopting the above-mentioned transmission mechanism 100, it is possible to adjust the axial position of the transmission gear 20 without removing the transmission gear 20, only by adjusting the axial position of the adjustment cover 30 in the second connection section 22, which simplifies the adjustment steps and improves the adjustment efficiency. And after the position adjustment is completed, the fastening assembly 40 can re-lock the adjustment cover 30 and the transmission shaft 10, improving the stability of the adjustment.

[0057] In an embodiment, as Figures 1 - 7As shown, the outer periphery of the adjustment cover 30 is threadedly connected to the inner wall of the second connecting section 22, and the inner diameter of the second connecting section 22 is larger than the outer diameter of the transmission shaft 10. The outer periphery of the adjustment cover 30 has an external thread (not shown in the figure), and the inner wall of the second connecting section 22 has an internal thread (not shown in the figure). The external thread and the internal thread cooperate with each other to achieve a threaded connection. By rotating the adjustment cover 30, the axial position of the adjustment cover 30 in the inner wall of the second connecting section 22 can be changed. Since the adjusted adjustment cover 30 abuts against the end of the transmission shaft 10, when the adjustment cover 30 is in the position as shown in Figure 7 shown, the end of the transmission shaft 10 will be inserted into the second connecting section 22, so that the adjustable axial position of the transmission gear 20 is larger. In the above structure, the threaded connection between the adjustment cover 30 and the second connecting section 22 not only provides a stable axial adjustment ability, but also ensures that the adjusted position can be firmly locked and is not easily displaced due to vibration or external force.

[0058] In one embodiment, as shown in Figure 3 , 5 , 6 and 7, a threaded hole 11 is provided at one end of the transmission shaft 10 facing the adjustment cover 30, and the adjustment cover 30 is also provided with a plurality of through holes 31 axially. The fastening assembly 40 sequentially passes through one of the through holes 31 and the threaded hole 11. The fastening assembly 40 can be a bolt. The bolt passes through a through hole 31 of the adjustment cover 30 and is inserted into the threaded hole 11 of the transmission shaft 10, which can lock the adjustment cover 30 and the transmission shaft 10. When it is necessary to unlock the adjustment cover 30 and the transmission shaft 10, the bolt can be rotated to screw it out of the threaded hole 11, thereby releasing the locked state of the adjustment cover 30 and the transmission shaft 10. This locking method is simple and reliable, easy to operate, and can ensure that the relative position between the adjustment cover 30 and the transmission shaft 10 does not change during the adjustment process. In addition, the provision of a plurality of through holes 31 can more precisely adjust the position of the adjustment cover 30.

[0059] In one embodiment, as shown in Figure 5 shown, a plurality of through holes 31 are evenly spaced along the circumferential direction of the adjustment cover 30 and are symmetrically arranged around the center of the adjustment cover 30. The fastening assembly 40 needs to pass through the through hole 31 and the threaded hole 11 in sequence for locking. The adjustment method of the adjustment cover 30 is to adjust by rotation. The provision of a plurality of through holes 31 symmetrically arranged around the center of the adjustment cover 30 can make the unit adjustment distance a fixed value, so as to facilitate fine adjustment. Specifically, as shown in Figure 5As shown, the adjustment cover 30 is provided with four through holes 31 that are symmetrically arranged around the center of the adjustment cover 30. When adjusting the adjustment cover 30, each adjustment can be rotated by an integer multiple of 90 degrees so that the through hole 31 after the position adjustment can be aligned with the threaded hole 11. By using the above adjustment cover 30, accurate adjustment of the position of the adjustment cover 30 can be achieved, and due to the number and arrangement of the through holes 31, the adjustment process has higher flexibility and convenience. When it is necessary to adjust the axial position of the transmission gear 20, the rotation angle that the adjustment cover 30 needs to rotate can be determined according to the required adjustment distance, and then by rotating the adjustment cover 30 to the corresponding position, the adjustment of the axial position of the transmission gear 20 can be realized. This adjustment method not only simplifies the adjustment steps but also improves the accuracy and efficiency of the adjustment.

[0060] In one embodiment, the transmission mechanism 100 further includes an adjustment component (not shown in the figure). The adjustment component can pass through any two through holes 31 and is used to apply a rotational driving force to the adjustment cover 30 to drive the adjustment cover 30 to rotate threadedly relative to the second connecting section 22. Specifically, the adjustment component can include two rod-shaped members. One end of the rod-shaped member can be inserted into the two through holes 31, and the other end can be provided with an operation portion to facilitate personnel to hold and apply a rotational driving force to the adjustment cover 30. When adjusting the position of the adjustment cover 30, first remove the fastening component 40, then insert one end of the two rod-shaped members into any two through holes 31 respectively, and apply a rotational driving force to the other end of the rod-shaped member to drive the adjustment cover 30 to rotate relative to the second connecting section 22. When the adjustment cover 30 rotates to the target position, stop applying the rotational driving force to the rod-shaped member and withdraw the rod-shaped member from the through hole 31.

[0061] Subsequently, adjust the position of the transmission gear 20 so that the transmission gear 20 drives the adjustment cover 30 to abut against the transmission shaft 10. Finally, insert the fastening component 40 into the new through hole 31 and the threaded hole 11 to lock the adjustment cover 30 and the transmission shaft 10. By using the above adjustment component, the position of the adjustment cover 30 can be adjusted more easily, the operation difficulty is reduced, and the adjustment efficiency is improved.

[0062] In another embodiment, the adjustment component is a rod-shaped member. One end of the rod-shaped member is inserted into any one through hole 31, and a rotational driving force is applied to the other end of the rod-shaped member to rotate the adjustment cover 30. This structure is simpler, but there are inconveniences in the operation process and is suitable for products that require a relatively small rotational driving force to be applied.

[0063] In one embodiment, as Figure 8 shown, it is a schematic structural diagram of the transmission shaft 10 provided according to the second embodiment of the present application; as Figure 9As shown in the figure, it is a schematic structural diagram of the adjustment cover 30 provided according to the second embodiment of the present application. One end of the transmission shaft 10 facing the adjustment cover 30 is provided with a threaded hole 11. The adjustment cover 30 is also axially provided with a plurality of through holes 31. The plurality of through holes 31 include a central through hole 311 and circumferential through holes 312 symmetrically arranged along the central through hole 311. The fastening assembly 40 sequentially passes through the central through hole 31 and the threaded hole 11. The central through hole 311 of the adjustment cover 30 is coaxially arranged with the threaded hole 11 of the transmission shaft 10, so that the fastening assembly 40 can smoothly pass through and achieve locking. The circumferential through holes 312 are evenly spaced around the central through hole 311. This arrangement not only provides multiple locking position options but also increases the flexibility of adjustment. When it is necessary to adjust the axial position of the transmission gear 20, the fastening assembly 40 can be first removed, and then the adjustment cover 30 can be rotated to change its axial position in the second connection section 22. This structural form not only simplifies the adjustment steps but also improves the accuracy and stability of adjustment, making the adjustment more precise and basically achieving stepless adjustment.

[0064] In one embodiment, as Figure 9 shown, the number of the circumferential through holes 312 is two, and the two circumferential through holes 312 are symmetrically distributed with the central through hole 311 as the center. This arrangement not only makes the adjustment cover 30 more balanced and stable during rotational adjustment but also reduces the eccentric force generated by rotational adjustment, thereby improving the overall stability and durability of the transmission mechanism 100.

[0065] In one embodiment, as Figure 3 and 4 shown, the end of the transmission shaft 10 has an external spline 12, and the first connection section 21 has an internal spline 23. The internal spline 23 is sleeved on the external spline 12. The external spline 12 and the internal spline 23 achieve spline connection. When the transmission shaft 10 rotates, the rotational torque can be transmitted to the first connection section 21, so that the first connection section 21 rotates under the action of the rotational torque. The spline has the advantages of compact structure, stable connection, high transmission efficiency, etc., ensuring the smoothness and reliability of torque transmission.

[0066] In another embodiment, both the end of the transmission shaft 10 and the inner wall of the first connection section 21 are provided with flat key grooves (not shown in the figure). The transmission mechanism 100 further includes a flat key (not shown in the figure). The flat key is received in the closed space formed by the two flat key grooves. When the transmission shaft 10 rotates, the rotational torque will be transmitted to the flat key, and the flat key can drive the transmission gear 20 to rotate, so as to maintain a driving connection between the transmission shaft 10 and the transmission gear 20. With the above structure, a stable connection between the transmission shaft 10 and the transmission gear 20 can also be achieved, and the structure is simple, easy to machine and assemble.

[0067] In one embodiment, a method for adjusting a transmission mechanism 100 is provided. The adjustment method is applied to the above-mentioned transmission mechanism 100, and the adjustment method includes: removing the fastening component 40; adjusting the axial position of the adjustment cover 30 relative to the second connection section 22; adjusting the position of the transmission gear 20 relative to the transmission shaft 10 so that the transmission shaft 10 abuts against the adjustment cover 30; locking the adjustment cover 30 and the transmission shaft 10 through the fastening component 40. During the adjustment process, it is first necessary to ensure that the transmission mechanism 100 is in a non-working state to avoid damage or safety hazards during adjustment. When removing the fastening component 40, appropriate tools should be used to avoid damaging the fastening component 40 or other parts of the transmission mechanism 100. After the fastening component 40 is removed, the axial position of the adjustment cover 30 in the second connection section 22 is adjusted by rotating the adjustment cover 30. This step can be performed by using an adjustment component. Subsequently, the position of the transmission gear 20 relative to the transmission shaft 10 is adjusted so that the adjustment cover 30 abuts against the transmission shaft 10 to ensure the reliability of the transmission mechanism 100 during subsequent operation. Finally, the adjustment cover 30 and the transmission shaft 10 are locked through the fastening component 40 to prevent loosening or detachment during the operation of the transmission mechanism 100.

[0068] In one embodiment, the outer periphery of the adjustment cover 30 has an external thread, and the second connection section 22 has an internal thread. The step of adjusting the position of the adjustment cover 30 relative to the second connection section 22 includes: obtaining the adjustment distance and adjustment direction of the transmission gear 20; determining the rotation angle of the adjustment cover 30 according to the adjustment distance; determining the rotation direction of the adjustment cover 30 according to the adjustment direction; rotating the adjustment cover 30 according to the rotation angle and rotation direction. According to the coplanarity deviation value between the two gears, the adjustment distance and adjustment direction of the transmission gear 20 can be determined. The pitch parameter of the external thread of the adjustment cover 30 can be determined in advance. After determining the adjustment distance and adjustment direction, the corresponding rotation angle and rotation direction can be calculated to rotate the adjustment cover 30. By using the above adjustment method, the position of the transmission gear 20 can be accurately controlled, thereby ensuring the stability and reliability of the transmission mechanism 100 during operation. In addition, since the adjustment cover 30 and the second connection section 22 are connected by a thread, this connection method is not only simple in structure but also has good self-locking performance, which can effectively prevent loosening or detachment during the operation of the transmission mechanism 100.

[0069] In one embodiment, the adjustment cover 30 is also axially provided with a plurality of through holes 31. The plurality of through holes 31 are evenly spaced along the circumferential direction of the adjustment cover 30. The angle between any two adjacent through holes 31 is the unit rotation angle. The steps of determining the rotation angle of the adjustment cover 30 according to the adjustment distance include: determining the theoretical rotation angle of the adjustment cover 30 according to the adjustment distance; determining the multiple relationship between the theoretical rotation angle and the unit rotation angle; and determining the actual rotation angle of the adjustment cover 30 according to the multiple relationship and the unit rotation angle. For example, the number of through holes 31 is four, and the angle formed by each adjacent through hole 31 and the center of the adjustment cover 30 is 90 degrees. When the theoretical rotation angle is determined to be 180 degrees, rotating two unit rotation angles can complete the adjustment of the adjustment cover 30. When the theoretical rotation angle is determined to be 100 degrees, the multiple relationship between the theoretical rotation angle and the unit rotation angle is greater than one integer multiple and less than two integer multiples. The actual rotation angle can be determined to be 90 degrees, and the position of the adjustment cover 30 is adjusted according to the actual rotation angle. By adopting the above adjustment method, the adjustment process can be made more flexible and convenient for adjustment according to actual needs. Moreover, since the number of through holes 31 on the adjustment cover 30 is limited, the adjusted position has a certain discreteness. However, in practical applications, this discreteness is usually acceptable. The pitch of the thread usually corresponds to a relatively small distance value and will not significantly affect the performance of the transmission mechanism 100. If higher adjustment accuracy is pursued, more through holes 31 can be provided or the pitch parameters of the internal and external threads can be adjusted to achieve an effect similar to stepless adjustment. In addition, through the cooperation of the through holes 31 on the adjustment cover 30 and the threaded holes 11 on the transmission shaft 10, the position of the adjustment cover 30 can be fixed to ensure the stability of the transmission mechanism 100 during operation.

[0070] In one embodiment, an agricultural machine is provided, including the above-mentioned transmission mechanism 100. The transmission mechanism 100 can be arranged in the drive system of the agricultural machine to transmit the driving torque and drive various actuators of the agricultural machine to work. The actuators include, for example, a traveling mechanism, a cleaning mechanism, etc. Since the transmission mechanism 100 has the advantages of simple structure, convenient adjustment, good stability, etc., the working efficiency and reliability of the agricultural machine can be improved.

[0071] In the description of the present application, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0072] In this application, unless otherwise clearly defined or limited, terms such as "installed", "connected", "linked", "fixed", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or communicable with each other; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0073] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0074] Although the embodiments of this application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limitations on this application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.

Claims

1. A transmission mechanism, characterized in that, Comprising: A drive shaft (10); A transmission gear (20) is axially penetrated with an installation hole for inserting the drive shaft (10). The transmission gear (20) includes a first connection section (21) and a second connection section (22) axially connected in sequence. The first connection section (21) is sleeved on the drive shaft (10) and is drivingly connected to the drive shaft (10); An adjustment cover (30) is inserted into the second connection section (22), and the axial position of the adjustment cover (30) in the second connection section (22) is adjustable; A fastening assembly (40) sequentially passes through the adjustment cover (30) and the drive shaft (10) and locks the drive shaft (10) and the adjustment cover (30). When the fastening assembly (40) is removed, by adjusting the axial position of the adjustment cover (30) relative to the second connection section (22) and adjusting the axial position of the transmission gear (20) relative to the drive shaft (10), the drive shaft (10) and the adjustment cover (30) are abutted.

2. The transmission mechanism according to claim 1, characterized in that, The outer circumference of the adjustment cover (30) is threadedly connected to the inner wall of the second connection section (22), and the inner diameter of the second connection section (22) is larger than the outer diameter of the drive shaft (10).

3. The transmission mechanism according to claim 1, wherein, One end of the drive shaft (10) facing the adjustment cover (30) is provided with a threaded hole (11), and the adjustment cover (30) is also axially provided with a plurality of through holes (31). The fastening assembly (40) sequentially passes through one of the through holes (31) and the threaded hole (11).

4. The transmission mechanism according to claim 3, characterized in that The plurality of through holes (31) are evenly spaced along the circumferential direction of the adjustment cover (30) and are symmetrically arranged around the center of the adjustment cover (30).

5. The transmission mechanism according to claim 3, wherein The transmission mechanism (100) further includes: An adjustment component, the adjustment component can pass through any two of the through holes (31), and the adjustment component is used to apply a rotational driving force to the adjustment cover (30) to drive the adjustment cover (30) to rotate threadedly relative to the second connection section (22).

6. The transmission mechanism (100) according to any one of claims 1 to 5, characterized in that, The end of the drive shaft (10) has an external spline (12), and the first connection section (21) has an internal spline (23), and the internal spline (23) is sleeved on the external spline (12).

7. A method for adjusting a transmission mechanism, characterized in that, The adjustment method is applied to the transmission mechanism (100) according to any one of claims 1 to 6. The adjustment method includes: Removing the fastening assembly (40); Adjusting the axial position of the adjustment cover (30) relative to the second connection section (22); Adjusting the position of the transmission gear (20) relative to the drive shaft (10) so that the drive shaft (10) abuts against the adjustment cover (30); Locking the adjustment cover (30) and the drive shaft (10) through the fastening assembly (40).

8. The adjustment method of the transmission mechanism according to claim 7, characterized in that The outer circumference of the adjustment cover (30) has an external thread, and the second connection section (22) has an internal thread. The step of adjusting the position of the adjustment cover (30) relative to the second connection section (22) includes: Obtaining the adjustment distance and adjustment direction of the transmission gear (20); Determine the rotation angle of the adjustment cover (30) according to the adjustment distance; Determine the rotation direction of the adjustment cover (30) according to the adjustment direction; Rotate the adjustment cover (30) according to the rotation angle and the rotation direction.

9. The adjustment method of the transmission mechanism according to claim 8, characterized in that The adjustment cover (30) is further axially provided with a plurality of through holes (31), and the plurality of through holes (31) are evenly spaced along the circumferential direction of the adjustment cover (30). The angle between any two adjacent through holes (31) is a unit rotation angle. The step of determining the rotation angle of the adjustment cover (30) according to the adjustment distance includes: Determine the theoretical rotation angle of the adjustment cover (30) according to the adjustment distance; Determine the multiple relationship between the theoretical rotation angle and the unit rotation angle; Determine the actual rotation angle of the adjustment cover (30) according to the multiple relationship and the unit rotation angle.

10. An agricultural machine, characterized in that, Comprising the transmission mechanism (100) according to any one of claims 1 to 6.

Images