Cleaning protection device of harvesting machine and harvester

Abstract

The utility model relates to a harvesting machinery cleaning protection device and a harvester, which relate to the field of agricultural machinery, and comprise a support beam, a left support frame assembly, a right support frame assembly, a left shield assembly and a right shield assembly, the left support frame assembly and the right support frame assembly are respectively and fixedly connected with the left end and the right end of the support beam; the left protective cover assembly is connected with the left supporting frame assembly, and the right protective cover assembly is connected with the right supporting frame assembly. The utility model has the beneficial effects that the left support frame assembly and the right support frame assembly are fixedly connected with the left side and the right side of the cleaning mechanism of the harvester, and the left support frame assembly and the right support frame assembly are connected through the support beam to form a support structure for each other. And compared with a sheet metal part which is independently fixed on one side of the cleaning mechanism, the scheme is high in strength and rigidity, high in reliability and long in service life. The left protective cover assembly and the right protective cover assembly shield the left side and the right side of the cleaning mechanism, and comprehensive protection on the cleaning mechanism is achieved.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery, specifically to a cleaning and protection device for harvesting machinery and a harvester. Background Technology

[0002] Harvesting machinery operates under complex conditions and with unstable loads. In particular, the core drive structure of the cleaning mechanism is exposed and lacks protection. Weeds and dust can easily clog drive components such as pulleys, and impacts from stones can easily damage key components, affecting product performance. Damage to the blower components of the cleaning system during operation can seriously affect the cleaning effect, reduce service life, and result in high maintenance costs.

[0003] The existing protective structure of the cleaning mechanism of harvesting machinery only uses a protective plate bolted to the outside of a few key transmission structures. The existing protective structure is simple and does not provide comprehensive protection. The protective structure has low strength and rigidity and is prone to deformation. Utility Model Content

[0004] The technical problem to be solved by this utility model is how to protect the cleaning mechanism.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A harvesting machinery cleaning and protection device includes a support beam, a left support frame assembly, a right support frame assembly, a left protective cover assembly and a right protective cover assembly. The left support frame assembly and the right support frame assembly are respectively fixedly connected to the left and right ends of the support beam. The left protective cover assembly is connected to the left support frame assembly, and the right protective cover assembly is connected to the right support frame assembly.

[0006] The beneficial effects of this utility model are as follows: The left and right support frame assemblies are used for fixed connection to the left and right sides of the cleaning mechanism of the harvester. The left and right support frame assemblies are connected by support beams and support each other. Compared with sheet metal parts being fixed separately to one side of the cleaning mechanism, this solution has high strength and rigidity, high reliability, and long service life. The left and right protective cover assemblies shield the left and right sides of the cleaning mechanism, achieving comprehensive protection for the cleaning mechanism.

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

[0008] Furthermore, both the left support frame assembly and the right support frame assembly have horizontally arranged pedals fixed to their bottoms.

[0009] The beneficial effect of adopting the above-mentioned further solution is that the bottom of the left support frame assembly and the right support frame assembly makes it easy to view the status of the high-level structure and carry out maintenance.

[0010] Furthermore, the left support frame assembly includes a left support frame and a bottom shell left side support frame. The right side of the left support frame is fixedly connected to the left side of the support beam, and the front end of the bottom shell left side support frame is fixedly connected to the lower end of the left support frame.

[0011] The beneficial effect of adopting the above-mentioned further solution is that the left support frame and the left side support frame of the bottom shell serve as the main support structure on the left side of the cleaning mechanism, providing support for the left protective cover assembly.

[0012] Furthermore, the left support frame assembly also includes a left side cover rear support frame. The left cover assembly includes a fan left side cover and a bottom shell left side cover. One end of the fan left side cover and one end of the bottom shell left side cover are rotatably connected to the left support frame. The other end of the fan left side cover is detachably connected to the left support frame. The other end of the bottom shell left side cover is detachably connected to one end of the left side cover rear support frame.

[0013] The beneficial effects of adopting the above-mentioned further solution are: the left side cover of the blower and the left side cover of the bottom shell can be rotated and opened, thereby facilitating observation of the cleaning mechanism during maintenance and simplifying maintenance operations. The rear support frame of the left side cover provides auxiliary support for the left side cover of the bottom shell. Specifically, the left side cover of the blower protects the left side of the blower components, the cleaning transmission pulley, and the drive shaft components of the cleaning mechanism. The left side cover of the bottom shell protects the grain elevator transmission pulley and the waste elevator transmission sprocket in the lower shell of the cleaning chamber.

[0014] Furthermore, the left support frame assembly also includes a protective cover support frame, one end of which is detachably connected to the left side cover of the bottom shell.

[0015] The beneficial effect of adopting the above-mentioned further solution is that the protective cover support frame provides auxiliary support to the left side of the bottom shell, thereby strengthening the support strength.

[0016] Furthermore, the left protective cover assembly also includes a left protective cover, the rear end of which is fixedly connected to the front end of the left support frame, and the left protective cover has a left observation hole.

[0017] The beneficial effects of adopting the above-mentioned further solution are: the left protective cover is used to protect the hydraulic oil pipe system, and the left observation hole allows observation of the operating status of the components inside.

[0018] Furthermore, the right support frame assembly includes a right support frame, the right cover assembly includes a fan right side cover, the left side of the right support frame is fixedly connected to the right side of the support beam, one end of the fan right side cover is rotatably connected to the right support frame, and the other end of the fan right side cover is detachably connected to the right support frame.

[0019] The beneficial effects of adopting the above-mentioned further solution are: the right support frame is the main support structure on the right side, and the right side cover of the blower is used to protect the right side components of the cleaning mechanism's cleaning transmission, the right push rod of the screen box, and the right side of the blower components.

[0020] Furthermore, the right shield assembly also includes a right front upper shield, the rear end of which is fixedly connected to the front end of the right support frame.

[0021] The beneficial effect of adopting the above-mentioned further solution is that the right front upper guard is used to protect the continuously variable speed control device of the fan.

[0022] Furthermore, the right shield assembly also includes a right shield, the rear end of which is fixedly connected to the front end of the right front upper shield, and the right shield is provided with a right observation hole.

[0023] The beneficial effects of adopting the above-mentioned further solution are: the right guard is used to protect the conveyor auger drive pulley, and the right observation hole makes it easy to observe the operating status of its inner components.

[0024] Furthermore, the right support frame assembly also includes a right side cover bracket, the right end of which is fixedly connected to the left side of the right cover.

[0025] The beneficial effect of adopting the above-mentioned further solution is that the right-side protective cover bracket serves as an auxiliary support structure, thereby strengthening the support for the right protective cover.

[0026] Furthermore, there are at least two support beams, which are parallel to each other and spaced apart.

[0027] Furthermore, the harvesting machinery cleaning and protection device also includes a front fan guard plate, a lower fan guard plate, and a lower front fan guard plate. There are at least three support beams, which are sequentially divided into a first support beam group, a second support beam group, and a third support beam group from front to back. The front fan guard plate is vertically arranged and fixedly connected to the first support beam group. The lower fan guard plate is inclined, with its upper end abutting against the lower end of the front fan guard plate. The lower fan guard plate is fixedly connected to the second support beam group. The lower front fan guard plate is horizontally arranged, with its front end abutting against the lower end of the lower fan guard plate. The lower front fan guard plate is fixedly connected to the third support beam group. Multiple flow holes are provided on the front fan guard plate, the lower fan guard plate, and the lower front fan guard plate.

[0028] The beneficial effects of adopting the above-mentioned further solution are: the front guard plate, the lower guard plate, and the lower front guard plate of the fan are arranged sequentially from the front to the bottom of the fan component to protect the fan component. The front guard plate, the lower guard plate, and the lower front guard plate of the fan are solid and reliable with good protective performance. Multiple flow holes are provided to avoid affecting the airflow at the fan outlet.

[0029] Furthermore, both the left shield assembly and the right shield assembly have multiple through holes arranged in an array.

[0030] The beneficial effect of adopting the above-mentioned further solution is that the left and right protective cover assemblies have multiple through holes, which facilitates observation of the internal structure while preventing the entry of gravel.

[0031] This utility model also provides a harvester, including a cleaning mechanism and a harvesting machinery cleaning and protection device, wherein the left support frame assembly and the right support frame assembly are fixedly connected to the left and right sides of the cleaning mechanism, respectively.

[0032] The beneficial effects are: the harvesting machinery cleaning and protection device has high structural strength and can provide comprehensive protection for the cleaning mechanism. Attached Figure Description

[0033] Figure 1 This is a three-dimensional view of a harvesting machinery cleaning and protection device according to the present invention;

[0034] Figure 2 This is a top view of the left support frame assembly and the left protective cover assembly of this utility model. The dotted lines in the figure are used to indicate the positions of the components of the cleaning mechanism.

[0035] Figure 3 This is a top view of the right support frame assembly and the right protective cover assembly of this utility model. The dotted lines in the figure are used to indicate the positions of the components of the cleaning mechanism.

[0036] Figure 4 This is a right view of the front guard plate, lower guard plate, and lower front guard plate of the fan according to this utility model. The dotted lines in the figure are used to indicate the position of the fan components.

[0037] Figure 5 This is a three-dimensional view of the left support frame assembly and the left protective cover assembly of this utility model. The dashed box in the figure is used to indicate the connection end of the left support frame assembly for connecting to the cleaning mechanism.

[0038] Figure 6 This is a three-dimensional view of the right support frame assembly and the right protective cover assembly of this utility model. The dashed box in the figure is used to indicate the connection end of the right support frame assembly for connecting to the cleaning mechanism.

[0039] The attached diagram lists the components represented by each number as follows:

[0040] 1. Left support frame; 2. Left side support frame of bottom shell; 3. Protective cover support frame; 4. Rear support frame of left protective cover; 5. Left protective cover; 6. Left protective cover of fan; 7. Left protective cover of bottom shell; 8. Right support frame; 9. Right protective cover bracket; 10. Right protective cover; 11. Right protective cover of fan; 12. Right front upper protective cover; 13. Support beam; 14. Front protective plate of fan; 15. Lower protective plate of fan; 16. Lower front protective plate of fan; 17. Fan components; 18. Cleaning transmission pulley; 19. Drive shaft components; 20. Pulley for grain elevator; 21. Sprocket for waste elevator; 22. Hydraulic oil pipe system; 23. Right side components of cleaning transmission; 24. Right push rod of screen box; 25. Stepless speed regulation device for fan; 26. Conveying auger transmission pulley. Detailed Implementation

[0041] 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.

[0042] Example 1

[0043] like Figures 1-6 As shown, this embodiment provides a harvesting machinery cleaning and protection device, including a support beam 13, a left support frame assembly, a right support frame assembly, a left protective cover assembly, and a right protective cover assembly. The left support frame assembly and the right support frame assembly are respectively fixedly connected to the left and right ends of the support beam 13. The left protective cover assembly is connected to the left support frame assembly, and the right protective cover assembly is connected to the right support frame assembly.

[0044] The left and right support frame assemblies are used for fixed connection to the left and right sides of the cleaning mechanism of the harvester. They are connected by support beam 13 and serve as mutual support structures. Compared to sheet metal parts being individually fixed to one side of the cleaning mechanism, this solution offers greater strength, rigidity, reliability, and service life. The left and right protective cover assemblies shield the left and right sides of the cleaning mechanism, providing comprehensive protection.

[0045] Specifically, such as Figure 5 and Figure 6 As shown, both the left and right support frame assemblies have connecting ends on opposite sides, which are fixedly connected to the cleaning mechanism. The connecting ends are bolt holes formed on the left and right support frame assemblies, or connecting rods with bolt holes. One end of the connecting rod connects to the left or right support frame assembly, and the other end is used to fix it to the cleaning mechanism.

[0046] Based on any of the above technical solutions, the bottom of both the left support frame assembly and the right support frame assembly is fixed with a horizontally arranged footboard.

[0047] The bottom of the left and right support frame assemblies allows for easy viewing of the structural condition at higher levels and facilitating maintenance.

[0048] Optionally, the pedal is located inside or outside the left and right guard assemblies. The inside of the left guard assembly refers to the side of the left and right guard assemblies facing each other, and the outside of the left guard assembly refers to the side of the left and right guard assemblies facing away from each other; similarly, the inside of the right guard assembly refers to the side of the left and right guard assemblies facing each other, and the outside of the right guard assembly refers to the side of the left and right guard assemblies facing away from each other.

[0049] Specifically, the pedals are perforated, which not only provide support but also prevent dust from accumulating on them.

[0050] Based on any of the above technical solutions, the left support frame assembly includes a left support frame 1 and a bottom shell left side support frame 2. The right side of the left support frame 1 is fixedly connected to the left side of the support beam 13, and the front end of the bottom shell left side support frame 2 is fixedly connected to the lower end of the left support frame 1.

[0051] The left support frame 1 and the left side support frame 2 of the bottom shell serve as the main support structures on the left side of the cleaning mechanism, providing support for the left protective cover assembly.

[0052] Specifically, the right sides of both the left support frame 1 and the left side support frame 2 of the bottom shell are used for fixed connection with the cleaning mechanism.

[0053] Specifically, both the lower ends of the left support frame 1 and the left side support frame 2 of the bottom shell are fixed with pedals.

[0054] In one specific example, such as Figure 1 As shown, the left support frame 1 is a vertical, approximately rectangular frame structure composed of plates and profiles, while the left support frame 2 of the bottom shell is a horizontally arranged rectangular frame composed of profiles.

[0055] Based on any of the above technical solutions, the left support frame assembly further includes a left side cover rear support frame 4. The left cover assembly includes a fan left side cover 6 and a bottom shell left side cover 7. One end of the fan left side cover 6 and one end of the bottom shell left side cover 7 are rotatably connected to the left support frame 1. The other end of the fan left side cover 6 is detachably connected to the left support frame 1. The other end of the bottom shell left side cover 7 is detachably connected to one end of the left side cover rear support frame 4.

[0056] The existing protective structure uses multiple bolts to fix the protective plate to both sides of the cleaning mechanism, which is inconvenient to disassemble and assemble during maintenance, requiring the removal of multiple bolts and resulting in low operational efficiency.

[0057] In this design, only the connection structure at the other end of the left side cover 6 of the blower and the left side cover 7 of the bottom shell needs to be disconnected. The left side cover 6 of the blower and the left side cover 7 of the bottom shell can then be rotated and opened, facilitating observation of the cleaning mechanism during maintenance and simplifying maintenance operations. The rear support frame 4 of the left side cover provides auxiliary support for the left side cover 7 of the bottom shell. Specifically, the left side cover 6 of the blower protects the left side of the blower component 17, the cleaning transmission pulley 18, and the drive shaft component 19 of the cleaning mechanism. The left side cover 7 of the bottom shell protects the grain elevator transmission pulley 20 and the waste elevator transmission sprocket 21 in the lower shell of the cleaning chamber.

[0058] The right end of the left side cover rear support frame 4 is used for fixed connection with the cleaning mechanism.

[0059] Specifically, the rotating connection structure of the left side cover 6 of the fan and the left side cover 7 of the bottom shell with the left support frame 1 is the same. Taking the left side cover 6 of the fan as an example: one end of the left side cover 6 of the fan is provided with at least one vertical rotating shaft. The upper end of the rotating shaft is fixedly connected to the left side cover 6 of the fan through a horizontally set connecting rod. That is, the rotating shaft and the connecting rod form an inverted L-shape. An annular adapter sleeve is fixed on the left support frame 1. The rotating shaft of the left side cover 6 of the fan can be inserted into the adapter sleeve from top to bottom to realize the rotating connection between the left side cover 6 of the fan and the left support frame 1, and at the same time facilitate the disassembly of the left side cover 6 of the fan.

[0060] The other end of the left side cover 6 of the fan is detachably connected to the left support frame 1. Specifically, the handle bolt passes through the other end of the left side cover 6 of the fan and is threadedly connected to the left support frame 1.

[0061] The other end of the left side cover 7 of the bottom shell is detachably connected to one end of the rear support frame 4 of the left side cover. Specifically, the handle bolt passes through the other end of the left side cover 7 of the bottom shell and is threadedly connected to the rear support frame 4 of the left side cover.

[0062] Based on any of the above technical solutions, the left support frame assembly further includes a protective cover support frame 3, one end of which is detachably connected to the left side protective cover 7 of the bottom shell.

[0063] The protective cover support frame 3 provides auxiliary support to the left side of the bottom shell protective cover 7, thereby strengthening the support.

[0064] Specifically, the right end of the protective cover support frame 3 is used for fixed connection with the cleaning mechanism.

[0065] One end of the protective cover support frame 3 is detachably connected to the left side protective cover 7 of the bottom shell. Specifically, the handle bolt passes through the left side protective cover 7 of the bottom shell and is threadedly connected to the protective cover support frame 3.

[0066] Preferably, both the left side cover 6 of the fan and the left side cover 7 of the bottom shell are provided with reinforcing ribs.

[0067] Based on any of the above technical solutions, the left protective cover assembly further includes a left protective cover 5, the rear end of the left protective cover 5 is fixedly connected to the front end of the left support frame 1, and the left protective cover 5 is provided with a left observation hole.

[0068] The left protective cover 5 is used to protect the hydraulic oil pipe system 22, and the left observation hole allows observation of the operating status of the components inside.

[0069] In one specific example, the left shield 5 is formed by bending sheet metal.

[0070] Based on any of the above technical solutions, the right support frame assembly includes a right support frame 8, the right cover assembly includes a fan right side cover 11, the left side of the right support frame 8 is fixedly connected to the right side of the support beam 13, one end of the fan right side cover 11 is rotatably connected to the right support frame 8, and the other end of the fan right side cover 11 is detachably connected to the right support frame 8.

[0071] The right support frame 8 is the main support structure on the right side. The right side cover 11 of the blower is used to protect the right side of the cleaning transmission component 23 of the cleaning mechanism, the right push rod 24 of the screen box, and the right side of the blower component 17.

[0072] Specifically, a foot pedal is fixed to the lower part of the right support frame 8.

[0073] Preferably, the right side cover 11 of the fan is provided with reinforcing ribs to ensure structural strength.

[0074] Based on any of the above technical solutions, the right shield assembly also includes a right front upper shield 12, the rear end of which is fixedly connected to the front end of the right support frame 8.

[0075] The upper right front guard 12 is used to protect the continuously variable speed control device 25 of the fan.

[0076] Based on any of the above technical solutions, the right shield assembly further includes a right shield 10, the rear end of the right shield 10 is fixedly connected to the front end of the right front upper shield 12, and the right shield 10 is provided with a right observation hole.

[0077] The right guard 10 is used to protect the conveyor auger drive pulley 26, and it has a right observation hole to facilitate observation of the operating status of its internal components.

[0078] In one specific example, the right shield 10 is formed by bending sheet metal.

[0079] Based on any of the above technical solutions, the right support frame assembly further includes a right side cover bracket 9, the right end of which is fixedly connected to the left side of the right cover 10.

[0080] The right-side protective cover bracket 9 is an auxiliary support structure that strengthens the support for the right protective cover 10.

[0081] Specifically, the left end of the right-side protective cover bracket 9 is used for fixed connection with the cleaning mechanism.

[0082] Based on any of the above technical solutions, there are at least two support beams 13, and the at least two support beams 13 are arranged parallel to each other and spaced apart.

[0083] Based on any of the above technical solutions, the harvesting machinery cleaning and protection device further includes a front fan guard plate 14, a lower fan guard plate 15, and a lower front fan guard plate 16. There are at least three support beams 13, which are sequentially divided into a first support beam group, a second support beam group, and a third support beam group from front to back. The front fan guard plate 14 is vertically arranged and fixedly connected to the first support beam group. The lower fan guard plate 15 is inclined, with its upper end abutting against the lower end of the front fan guard plate 14. The lower fan guard plate 15 is fixedly connected to the second support beam group. The lower front fan guard plate 16 is horizontally arranged, with its front end abutting against the lower end of the lower fan guard plate 15. The lower front fan guard plate 16 is fixedly connected to the third support beam group. Multiple flow holes are provided on the front fan guard plate 14, the lower fan guard plate 15, and the lower front fan guard plate 16.

[0084] The front guard plate 14, the lower guard plate 15, and the lower front guard plate 16 of the fan are arranged sequentially from the front to the bottom of the fan component 17 to protect the fan component 17. The front guard plate 14, the lower guard plate 15, and the lower front guard plate 16 of the fan are solid and reliable with good protective performance. Multiple flow holes are provided to avoid affecting the airflow at the fan outlet.

[0085] Each of the first support beam group, the second support beam group, and the third support beam group includes at least one support beam 13.

[0086] In one specific example, such as Figure 1 As shown, the first support beam group includes two support beams 13 spaced apart vertically; the second support beam group includes one support beam 13 located below and behind the first support beam group; and the third support beam group includes one support beam 13 located below and behind the second support beam group.

[0087] Based on any of the above technical solutions, both the left protective shield assembly and the right protective shield assembly have multiple through holes arranged in an array.

[0088] The left and right protective cover assemblies have multiple through holes, which facilitates observation of the internal structure while preventing the entry of gravel.

[0089] Specifically, the through hole is a small-diameter round hole, the diameter of which can be designed according to the specific operation requirements, for example, a round hole with a diameter of 1cm-3cm.

[0090] Example 2

[0091] This embodiment also provides a harvester, including a cleaning mechanism and a harvesting machinery cleaning and protection device as described in Embodiment 1, wherein the left support frame assembly and the right support frame assembly are fixedly connected to the left and right sides of the cleaning mechanism, respectively.

[0092] The harvesting machinery cleaning and protection device has a high structural strength and can provide comprehensive protection for the cleaning mechanism.

[0093] Specifically, the support beam 13 is located on the front or lower side of the cleaning mechanism.

[0094] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying 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.

[0095] 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.

[0096] 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.

[0097] 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.

[0098] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0099] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cleaning and protective device for harvesting machinery, characterized in that, It includes a support beam (13), a left support frame assembly, a right support frame assembly, a left protective cover assembly, and a right protective cover assembly. The left support frame assembly and the right support frame assembly are fixedly connected to the left and right ends of the support beam (13), respectively. The left protective cover assembly is connected to the left support frame assembly, and the right protective cover assembly is connected to the right support frame assembly.

2. The harvesting machinery cleaning and protection device according to claim 1, characterized in that, Both the left support frame assembly and the right support frame assembly have horizontally mounted pedals fixed to their bottoms.

3. The harvesting machinery cleaning and protection device according to claim 1, characterized in that, The left support frame assembly includes a left support frame (1) and a bottom shell left side support frame (2). The right side of the left support frame (1) is fixedly connected to the left side of the support beam (13), and the front end of the bottom shell left side support frame (2) is fixedly connected to the lower end of the left support frame (1).

4. A harvesting machinery cleaning and protection device according to claim 3, characterized in that, The left support frame assembly also includes a left side cover rear support frame (4). The left cover assembly includes a fan left side cover (6) and a bottom shell left side cover (7). One end of the fan left side cover (6) and one end of the bottom shell left side cover (7) are rotatably connected to the left support frame (1). The other end of the fan left side cover (6) is detachably connected to the left support frame (1). The other end of the bottom shell left side cover (7) is detachably connected to one end of the left side cover rear support frame (4).

5. A harvesting machinery cleaning and protection device according to claim 4, characterized in that, The left support frame assembly also includes a protective cover support frame (3), one end of which is detachably connected to the left side cover (7) of the bottom shell.

6. A harvesting machinery cleaning and protection device according to claim 3, characterized in that, The left protective cover assembly also includes a left protective cover (5), the rear end of which is fixedly connected to the front end of the left support frame (1), and the left protective cover (5) is provided with a left observation hole.

7. A harvesting machinery cleaning and protection device according to claim 1, characterized in that, The right support frame assembly includes a right support frame (8), and the right cover assembly includes a fan right side cover (11). The left side of the right support frame (8) is fixedly connected to the right side of the support beam (13). One end of the fan right side cover (11) is rotatably connected to the right support frame (8), and the other end of the fan right side cover (11) is detachably connected to the right support frame (8).

8. A harvesting machinery cleaning and protection device according to claim 7, characterized in that, The right shield assembly also includes a right front upper shield (12), the rear end of which is fixedly connected to the front end of the right support frame (8).

9. A harvesting machinery cleaning and protection device according to claim 8, characterized in that, The right shield assembly also includes a right shield (10), the rear end of which is fixedly connected to the front end of the right front upper shield (12), and the right shield (10) is provided with a right observation hole.

10. A harvesting machinery cleaning and protection device according to claim 9, characterized in that, The right support frame assembly also includes a right side cover bracket (9), the right end of which is fixedly connected to the left side of the right cover (10).

11. A harvesting machinery cleaning and protection device according to claim 1, characterized in that, There are at least two support beams (13), and the at least two support beams (13) are parallel to each other and spaced apart.

12. A harvesting machinery cleaning and protection device according to claim 11, characterized in that, It also includes a front fan guard plate (14), a lower fan guard plate (15), and a lower front fan guard plate (16). There are at least three support beams (13), which are divided into a first support beam group, a second support beam group, and a third support beam group from front to back. The front fan guard plate (14) is vertically arranged and fixedly connected to the first support beam group. The lower fan guard plate (15) is inclined and its upper end abuts against the lower end of the front fan guard plate (14). The lower fan guard plate (15) is fixedly connected to the second support beam group. The lower front fan guard plate (16) is horizontally arranged and its front end abuts against the lower end of the lower fan guard plate (15). The lower front fan guard plate (16) is fixedly connected to the third support beam group. Multiple flow holes are provided on the front fan guard plate (14), the lower fan guard plate (15), and the lower front fan guard plate (16).

13. A harvesting machinery cleaning and protection device according to any one of claims 1-12, characterized in that, Both the left and right shield assemblies have multiple through holes arranged in an array.

14. A harvester, characterized in that, The device includes a cleaning mechanism and a harvesting machinery cleaning and protection device as described in any one of claims 1-13, wherein the left support frame assembly and the right support frame assembly are fixedly connected to the left and right sides of the cleaning mechanism, respectively.

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