Large-air-volume series-connection fan device of bundling machine and bundling machine

Abstract

The utility model relates to a bundling machine large air volume series connection fan device and a bundling machine, the bundling machine large air volume series connection fan device comprises a fan shell and a plurality of fan impellers installed in the fan shell, fan shafts are coaxially fixed in the fan impellers, the fan shafts of the fan impellers are sequentially and coaxially connected to form a fan main shaft, and the fan main shaft is connected with the fan shell. A positioning plate is fixed in the fan shell, side plates are fixed on the two axial sides of the fan shell, and the side plates and the positioning plate are arranged perpendicular to the axis of the fan shell; the joint of every two adjacent fan shafts is rotationally connected to the corresponding positioning plate through a first bearing, and the two ends of the fan main shaft are rotationally connected to the corresponding side plates through second bearings. According to the utility model, a form of connecting a plurality of impellers in series is adopted, one impeller is replaced by the plurality of impellers, the impellers are shortened, the dynamic balance of the fan can be better, the whole fan main shaft is supported by a plurality of bearings, equivalently, the fulcrum distance of the fan shaft is shortened, the fan shaft is not easy to bend, and the structural strength of the fan is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of agricultural machinery, specifically to a high-volume series fan device for a baler and a baler. Background Technology

[0002] In existing large square balers, the blower's function is to blow air onto the knotter to remove dust and straw, preventing knotting malfunctions and failures due to straw or dust accumulation. Currently, similar products, both domestically and internationally, use aluminum blowers with riveted blades. These riveted blades are prone to being thrown off, causing damage to the impeller. Furthermore, the excessively long blower shaft is susceptible to bending and deformation, further increasing the risk of impeller damage. Utility Model Content

[0003] In order to solve one or more technical problems existing in the prior art, this utility model provides a high-volume series fan device for baling machines and a baling machine.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: This utility model provides a high-volume series fan device for a baler, including a fan housing and multiple fan impellers installed in the fan housing. A fan shaft is coaxially fixed inside the fan impeller. The fan shafts of the multiple fan impellers are sequentially coaxially connected to form a fan main shaft. A positioning plate is fixed inside the fan housing. Side plates are fixed on both sides of the fan housing along the axial direction. The side plates and positioning plates are arranged perpendicular to the axis of the fan housing. The connection points of two adjacent fan shafts are rotatably connected to the corresponding positioning plates through a first bearing. The two ends of the fan main shaft are rotatably connected to the corresponding side plates through a second bearing.

[0005] The beneficial effects of this utility model are as follows: The high-volume series-connected fan device for the baler of this utility model adopts a series connection of multiple impellers, replacing one impeller with multiple impellers. This shortens the impellers and improves the dynamic balance of the fan. The entire fan shaft is supported by multiple bearings, which effectively shortens the distance between the fan shaft's support points, making the fan shaft less prone to bending and improving the fan's structural strength. Furthermore, the improved structural strength allows for an increase in the number and curvature of the fan blades on the impellers, increasing the airflow of the fan device while maintaining structural strength; alternatively, increasing the number of impellers can also increase the airflow of the fan device while ensuring structural strength.

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] Furthermore, the connection between two adjacent fan shafts is made by a half-shaft structure, a spline structure, or a tenon and mortise structure, and a first bearing is fitted at the connection. The inner ring of the first bearing is fixed at the connection by a first bearing sleeve, and the outer ring of the first bearing is fixedly connected to the corresponding positioning plate by a first bearing seat.

[0008] The beneficial effects of adopting the above-mentioned further solutions are: the fan shaft adopts a half-shaft structure, spline structure, or tenon and mortise structure for plug-in connection, which facilitates disassembly and assembly, as well as connection with the first bearing.

[0009] Furthermore, the fan impeller is connected to the fan shaft via an impeller hub, and the two ends of the first bearing sleeve in the axial direction respectively abut against two adjacent impeller hubs on the two fan shafts connected to it; an adjusting shim is provided between the two ends of the first bearing sleeve in the axial direction and the abutting impeller hubs.

[0010] The beneficial effects of adopting the above-mentioned further solution are: by abutting both ends of the first bearing sleeve axially with the impeller hub, the overall structure is compact, and the assembly of the fan shaft and impeller is stable and reliable. By setting adjusting shims, excessive gaps between the first bearing sleeve and the impeller hub are avoided, making the assembly structure more compact and stable.

[0011] Furthermore, a blade mounting plate is fixedly fitted onto the impeller hub. The blade mounting plate is arranged parallel to the positioning plate. The blade mounting plate, positioning plate, and side plate are all made of alloy steel plate. Multiple fan blades are fixed between two adjacent blade mounting plates of each fan impeller. The multiple fan blades extend in a direction parallel to the fan shaft. The fan blades are made of alloy steel.

[0012] The beneficial effects of adopting the above-mentioned further scheme are: the blade mounting plate, positioning plate and side plate are made of alloy steel plate, and the fan blades are made of alloy steel blades. During installation, the number of fan blades and the curvature of the fan blades can be increased. In this way, when the structural strength is guaranteed, the air volume of the fan impeller can be increased.

[0013] Furthermore, the two ends of the fan shaft are fitted with second bearings. The inner ring of the second bearing is fixed to the outer side wall of the fan shaft near both ends by a second bearing sleeve. The outer ring of the second bearing is fixedly connected to the corresponding side plate by a second bearing seat. One axial end of the second bearing sleeve abuts against an impeller hub at the end of the fan shaft.

[0014] The beneficial effect of adopting the above-mentioned further solution is that the two ends of the main shaft of the fan are rotatably connected to the side plate through the second bearing, and the structure is stable and reliable.

[0015] Furthermore, both the first bearing and the second bearing are spherical bearings.

[0016] The beneficial effect of adopting the above-mentioned further solution is that the use of external spherical bearings results in a stable and reliable structure.

[0017] Furthermore, one end of the main shaft of the fan is connected to the power shaft of the power mechanism via a double sprocket coupling.

[0018] Furthermore, the double sprocket coupling includes a double-row roller chain, a first sprocket, and a second sprocket. The first sprocket is coaxially fixed to one end of the main shaft of the fan, and the second sprocket is coaxially fixed to one end of the power shaft. The main shaft of the fan and the power shaft are arranged coaxially. An assembly gap is reserved between the first sprocket and the second sprocket. The double-row roller chain is adapted to be mounted on the first sprocket and the second sprocket.

[0019] The beneficial effect of adopting the above-mentioned further solution is that the use of a double sprocket coupling can adjust the concentricity and reduce the impact on the fan caused by misalignment between the motor and the fan shaft.

[0020] Furthermore, each of the aforementioned connections is provided with a corresponding positioning plate, and the positioning plate has an installation hole. The first bearing is installed in the installation hole, and the connection points of two adjacent fan shafts pass through the installation hole.

[0021] The beneficial effect of adopting the above-mentioned further solution is that the first bearing at each connection can be mounted on the positioning plate, resulting in better support stability.

[0022] This utility model also provides a baler, including the high-volume series fan device for balers described above.

[0023] The beneficial effects of this utility model are: the baler of this utility model adopts a series fan device, which can improve the dynamic balance accuracy of the fan, the fan shaft is not easy to bend, and the fan impeller rotates more stably. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the internal structure of the high-volume series fan device for the baler of this utility model.

[0025] Figure 2 This is a bottom view of the high-volume series fan device for the baler of this utility model;

[0026] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure of BB;

[0027] Figure 4 This is a cross-sectional structural schematic diagram of the high-volume series fan device for the baler of this utility model;

[0028] Figure 5 for Figure 4Enlarged structural diagram of section A in the middle;

[0029] Figure 6 for Figure 4 Enlarged structural diagram of section B in the middle;

[0030] Figure 7 for Figure 4 Enlarged structural diagram of section C;

[0031] Figure 8 for Figure 4 A magnified structural diagram of section D in the middle.

[0032] The attached diagram lists the components represented by each number as follows:

[0033] 1. Fan casing; 11. Side plate; 12. Positioning plate; 13. Structural reinforcement;

[0034] 2. Fan impeller; 21. Fan shaft; 22. First half-shaft; 23. Second half-shaft; 24. Impeller hub; 25. Adjusting shim; 26. Fan blades; 27. Blade mounting plate;

[0035] 3. First bearing; 31. Second bearing; 32. First bearing sleeve; 33. Second bearing sleeve; 34. First bearing housing; 35. Second bearing housing;

[0036] 4. Double sprocket coupling; 41. First sprocket; 42. Second sprocket; 43. Double-row roller chain;

[0037] 5. Power mechanism; 51. Power shaft. Detailed Implementation

[0038] The principles and features of this utility model are described below. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0039] Example 1

[0040] like Figures 1-8 As shown in this embodiment, a high-volume series fan device for a baler includes a fan housing 1 and multiple fan impellers 2 installed inside the fan housing 1. A fan shaft 21 is coaxially fixed inside each fan impeller 2. The fan shafts 21 of the multiple fan impellers 2 are sequentially coaxially connected to form a fan main shaft. A positioning plate 12 is fixed inside the fan housing 1. Side plates 11 are fixed on both sides of the fan housing 1 along its axial direction. Both the side plates 11 and the positioning plate 12 are arranged perpendicular to the axis of the fan housing 1. The connection points of two adjacent fan shafts 21 are rotatably connected to the corresponding positioning plates 12 through a first bearing 3. The two ends of the fan main shaft are rotatably connected to the corresponding side plates 11 through a second bearing 31.

[0041] Specifically, both the first bearing 3 and the second bearing 31 are spherical roller bearings, which are structurally stable and reliable.

[0042] Preferably, each of the connection points is provided with a positioning plate 12, and the positioning plate 12 has a mounting hole. The first bearing 3 is installed in the mounting hole, and the connection points of two adjacent fan shafts 21 pass through the mounting hole. The first bearing at each connection point can be assembled on the positioning plate, resulting in better support stability.

[0043] Specifically, such as Figure 1 and Figure 2 As shown, the fan housing 1 in this embodiment is provided with a structural reinforcing member 13 for stabilizing the overall structure. The structural reinforcing member 13 is provided on both the inner and outer side walls of the fan housing 1.

[0044] Preferably, in this embodiment, two fan impellers 2 can be connected in series, i.e., two fan impellers 2, two fan shafts 21, one first bearing 3, and two second bearings 31 are provided. Each fan impeller 2 is simple to manufacture, improving dynamic balance accuracy. Simultaneously, each section of the fan shaft is shortened relative to the entire fan shaft, making the fan shaft less prone to bending and resulting in more stable fan impeller rotation. A positioning plate and the first bearing are added in the middle of the fan as a support structure, but the fan impeller blades are very close together, allowing for a support structure's distance between adjacent fan impellers, resulting in a very compact structure. The use of three bearings for support provides high support strength and improves fan stability.

[0045] In this embodiment, the impeller blades can be large-bladed to increase air volume and flow rate. The blades can also be made of alloy steel, which has higher material strength and welding strength than aluminum blades.

[0046] The high-volume series-connected blower device for the baler in this embodiment uses multiple impellers connected in series, replacing a single impeller with multiple impellers. This shortens the impellers and improves the dynamic balance of the blower. The entire blower shaft is supported by multiple bearings, effectively shortening the distance between the shaft's support points and reducing the shaft's tendency to bend, thus increasing the blower's structural strength. Furthermore, the increased structural strength allows for an increase in the number and curvature of the impeller blades, further increasing the airflow while maintaining structural strength; alternatively, increasing the number of impellers can also enhance the airflow while ensuring structural strength.

[0047] Example 2

[0048] Based on Embodiment 1, this embodiment provides a preferred assembly scheme for the fan shaft 21, bearings, and impeller hub 24. For example... Figures 4-8As shown, the connection between two adjacent fan shafts 21 is achieved through a half-shaft structure, spline structure, or mortise and tenon structure, and a first bearing 3 is fitted at the connection. The inner ring of the first bearing 3 is fixed at the connection by a first bearing sleeve 32, and the outer ring of the first bearing 3 is fixedly connected to the corresponding positioning plate 12 by a first bearing seat 34. The fan shafts are connected by a half-shaft structure, spline structure, or mortise and tenon structure, which facilitates disassembly and assembly, as well as the connection with the first bearing.

[0049] Specifically, such as Figure 7 As shown, one end of two adjacent fan shafts 21 is the first half-shaft 22, and the other is the second half-shaft 23. The first half-shaft 22 and the second half-shaft 23 are adapted to be connected and fitted with a first bearing sleeve 32. In fact, the first bearing sleeve 32 is the inner ring of the first bearing 3 or is part of the inner ring of the first bearing 3.

[0050] like Figure 4 and Figure 7 As shown, in a preferred embodiment, the fan impeller 2 is connected to the fan shaft 21 via an impeller hub 24, and the two axial ends of the first bearing sleeve 32 abut against two adjacent impeller hubs 24 on the two connected fan shafts 21. By abutting the two axial ends of the first bearing sleeve against the impeller hubs, the overall structure is compact, and the assembly of the fan shaft and impeller is stable and reliable. Adjusting shims are provided between the two axial ends of the first bearing sleeve and the abutting impeller hubs. By providing adjusting shims, excessive gaps between the first bearing sleeve and the impeller hubs are avoided, making the assembly structure more compact and stable.

[0051] Furthermore, such as Figure 3 and Figure 4 As shown, a blade mounting plate 27 is fixedly fitted onto the impeller hub 24. The blade mounting plate 27 is arranged parallel to the positioning plate 12. The blade mounting plate 27, positioning plate 12, and side plate are all made of alloy steel plate. Multiple fan blades 26 are fixed between adjacent blade mounting plates 27 of each fan impeller 2. The multiple fan blades 26 extend in a direction parallel to the fan shaft 21. The fan blades 26 are made of alloy steel. The use of alloy steel plates for the blade mounting plate 27, positioning plate 12, and side plate 11, and alloy steel blades for the fan blades 26, allows for an increase in the number and curvature of the fan blades 26 during installation. This, while ensuring structural strength, increases the airflow of the fan impeller 2 during use.

[0052] like Figure 4 and Figure 7As shown, preferably, adjusting shims 25 are provided between the two ends of the first bearing sleeve 32 in the axial direction and the impeller hub 24 it abuts. The adjusting shims 25 are sleeved on the fan shaft 21. By providing adjusting shims, excessive gaps between the first bearing sleeve and the impeller hub are avoided, making the assembly structure more compact and stable.

[0053] like Figure 4 , Figure 6 and Figure 8 As shown, in a preferred embodiment, second bearings 31 are fitted at both ends of the fan shaft. The inner rings of the second bearings 31 are fixed to the outer side walls of the fan shaft near both ends via second bearing sleeves 33. The outer rings of the second bearings 31 are fixedly connected to the corresponding side plates 11 via second bearing seats 35. One axial end of the second bearing sleeve 33 abuts against an impeller hub 24 at the end of the fan shaft. The two ends of the fan shaft are rotatably connected to the side plates via the second bearings, resulting in a stable and reliable structure.

[0054] like Figure 6 and Figure 8 As shown, in this embodiment, the second bearing sleeve 33 can be used as part of the inner ring of the second bearing 31, or it can be used directly as the inner ring of the second bearing 31.

[0055] Specifically, in this embodiment, the first bearing housing 34 and the second bearing housing 35 can adopt an annular flange structure.

[0056] Example 3

[0057] Based on any of the above embodiments, this embodiment provides a preferred transmission scheme between the main shaft of the fan and the power shaft 51 of the power mechanism 5. For example... Figure 4 and Figure 5 As shown, one end of the main shaft of the fan is connected to the power shaft 51 of the power mechanism 5 via a double sprocket coupling 4.

[0058] like Figure 4 and Figure 5 As shown, the double sprocket coupling 4 includes a double-row roller chain 43, a first sprocket 41, and a second sprocket 42. The first sprocket 41 is coaxially fixed to one end of the main shaft of the fan, and the second sprocket 42 is coaxially fixed to one end of the power shaft 51. The main shaft of the fan and the power shaft 51 are arranged coaxially. An assembly gap is reserved between the first sprocket 41 and the second sprocket 42. The double-row roller chain 43 is adapted to be mounted on the first sprocket 41 and the second sprocket 42. Using a double sprocket coupling allows for concentricity adjustment, mitigating the impact of misalignment between the motor and the fan shaft on the fan.

[0059] Specifically, in this embodiment, the power mechanism 5 can be driven by a hydraulic motor, and the double-row chain coupling structure can adjust the impact of misalignment between the motor and the fan shaft on the fan.

[0060] Example 4

[0061] This embodiment also provides a baler, including the high-volume series fan device for balers described above.

[0062] The baler in this embodiment uses a series blower device, which can improve the dynamic balance accuracy of the blower, make the blower shaft less prone to bending, and make the blower impeller rotate more stably.

[0063] In the description of this utility model, it should be understood that the terms "inner", "outer", "axial", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are 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.

[0064] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0065] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0066] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" 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," "below," and "under" 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.

[0067] 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. In this specification, the illustrative expressions of the above terms 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 or examples described in this specification, as well as the features of different embodiments or examples.

[0068] 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. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A high-volume series fan device for a baler, characterized in that, The device includes a fan housing and multiple fan impellers installed within the fan housing. A fan shaft is coaxially fixed inside each fan impeller. The fan shafts of the multiple fan impellers are sequentially coaxially connected to form a main fan shaft. A positioning plate is fixed inside the fan housing. Side plates are fixed on both sides of the fan housing along its axial direction. Both the side plates and the positioning plate are arranged perpendicular to the axis of the fan housing. The connection points of two adjacent fan shafts are rotatably connected to the corresponding positioning plates via first bearings. The two ends of the main fan shaft are rotatably connected to the corresponding side plates via second bearings.

2. The high-volume series fan device for a baler according to claim 1, characterized in that, The connection between two adjacent fan shafts is made by a half-shaft structure, a spline structure, or a tenon and mortise structure, and a first bearing is fitted at the connection. The inner ring of the first bearing is fixed at the connection by a first bearing sleeve, and the outer ring of the first bearing is fixedly connected to the corresponding positioning plate by a first bearing seat.

3. The high-volume series fan device for a baler according to claim 2, characterized in that, The fan impeller is connected to the fan shaft via an impeller hub. The two ends of the first bearing sleeve in the axial direction respectively abut against two adjacent impeller hubs on the two fan shafts connected to it. Adjusting shims are provided between the two ends of the first bearing sleeve in the axial direction and the abutting impeller hubs.

4. The high-volume series fan device for a baler according to claim 3, characterized in that, A blade mounting plate is fixedly fitted onto the impeller hub. The blade mounting plate is arranged parallel to the positioning plate. The blade mounting plate, positioning plate, and side plate are all made of alloy steel plate. Multiple fan blades are fixed between two adjacent blade mounting plates of each fan impeller. The multiple fan blades extend in a direction parallel to the fan shaft. The fan blades are made of alloy steel.

5. The high-volume series fan device for a baler according to claim 3, characterized in that, The two ends of the fan shaft are fitted with second bearings. The inner ring of the second bearing is fixed to the outer side wall of the fan shaft near both ends by a second bearing sleeve. The outer ring of the second bearing is fixedly connected to the corresponding side plate by a second bearing seat. One axial end of the second bearing sleeve abuts against an impeller hub at the end of the fan shaft.

6. A high-volume series blower device for a baler according to any one of claims 1 to 5, characterized in that, Both the first bearing and the second bearing are spherical bearings.

7. A high-volume series blower device for a baler according to any one of claims 1 to 5, characterized in that, One end of the main shaft of the wind turbine is connected to the power shaft of the power mechanism via a double sprocket coupling.

8. The high-volume series fan device for a baler according to claim 7, characterized in that, The double sprocket coupling includes a double-row roller chain, a first sprocket, and a second sprocket. The first sprocket is coaxially fixed to one end of the main shaft of the fan, and the second sprocket is coaxially fixed to one end of the power shaft. The main shaft of the fan and the power shaft are arranged coaxially. An assembly gap is reserved between the first sprocket and the second sprocket. The double-row roller chain is adapted to be mounted on the first sprocket and the second sprocket.

9. The high-volume series fan device for a baler according to claim 1, characterized in that, Each of the aforementioned connections is provided with a positioning plate, and the positioning plate has a mounting hole. The first bearing is installed in the mounting hole, and the connection between two adjacent fan shafts passes through the mounting hole.

10. A baling machine, characterized in that, Includes a high-volume series fan device for a baler as described in any one of claims 1 to 9.

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