Roller cover and combine harvester

Abstract

The utility model relates to the field of harvesters, in particular to a roller cover and a combine harvester, the roller cover comprises an arc-shaped roller cover body and a straw guide plate structure arranged on the inner side of the roller cover body, the length direction of the roller cover body is the front-back direction, and the straw guide plate structure comprises sectional type straw guide plates. A plurality of sectional type grass guide plates are evenly arranged on the inner side of the roller cover body in the front-back direction, each sectional type grass guide plate is formed by sequentially splicing a left end grass guide part, at least one middle connecting part and a right end grass guide part, and the top face of each middle connecting part is attached to the inner wall of the roller cover body and rotationally connected with the roller cover body through a rotating piece. The left end of the left end grass guide part and the right end of the right end grass guide part are respectively connected with the left side wall and the right side wall of the roller cover body; and a plurality of movable connecting holes are respectively formed in the left end grass guide part, the middle connecting part and the right end grass guide part. The novel straw guide plate can be designed for an existing arc-shaped roller cover, and the length of the straw guide plate can be adjusted, so that the straw guide plate can adapt to various working conditions.

Description

Technical Field

[0001] This utility model relates to the field of harvesters, and more specifically, to a drum cover and a combine harvester. Background Technology

[0002] Combine harvester drum covers are mainly arched drum covers (such as...) Figure 1 and Figure 2 Some brands use square roller covers (such as...). Figure 3 and Figure 4 Currently, there are many types of rice varieties on the market, and the crops vary from place to place, with different harvesting requirements. Straw guides have a significant impact on crop harvesting, and replacing the drum cover is a troublesome, complicated, and time-consuming process.

[0003] The arc-shaped drum cover is equipped with a guide plate. Material is fed into the threshing machine. As the axial-flow drum rotates, the crop is repeatedly impacted and rubbed. The guide plate on the drum cover acts as a material guide, and with the rotation of the guide plate, the material is threshed, moved backward, and discharged from the machine. The square drum cover only has guide plates in the middle and rear sections; there is no guide plate at the front feed point. Although the guide plate angle can be adjusted according to different working conditions, the drum load is larger, which can easily cause problems such as a drop in engine speed.

[0004] In summary, the existing roller cover technology has the following defects:

[0005] 1. The angle of the guide plate of the arc-shaped roller cover is not adjustable, making it unsuitable for various working conditions;

[0006] 2. The angle of the guide plate of the square roller cover is adjustable, but it is not as good at guiding grass as the arc roller cover, which can easily cause problems such as high roller load. Utility Model Content

[0007] The purpose of this utility model is to provide a roller cover that can design a new type of grass guide plate for existing arc-shaped roller covers, and the length of the grass guide plate itself is adjustable so as to adapt to various working conditions.

[0008] Another objective of this invention is to provide a combine harvester that can design a new type of guide plate for existing arc-shaped drum covers, and the length of the guide plate itself is adjustable to adapt to various working conditions.

[0009] The technical solution of this utility model is implemented as follows:

[0010] A roller cover includes an arc-shaped roller cover body and a grass guide plate structure disposed on the inner side of the roller cover body. The length direction of the roller cover body is the front-to-back direction. The grass guide plate structure includes segmented grass guide plates, and a plurality of the segmented grass guide plates are evenly arranged on the inner side of the roller cover body along the front-to-back direction. The segmented grass guide plate is formed by sequentially splicing a left grass guide part, at least one intermediate connecting part and a right grass guide part. The segmented grass guide plate is arc-shaped as a whole and matches the shape of the roller cover body so as to be correspondingly attached to the inner wall of the roller cover body.

[0011] The top surface of the intermediate connecting part is in contact with the inner wall of the roller cover and is rotatably connected to the roller cover through a rotating component. The left end of the left grass guide part and the right end of the right grass guide part are respectively connected to the left side wall and the right side wall of the roller cover.

[0012] Multiple movable connecting holes are provided on the left-end grass guiding part, the middle connecting part and the right-end grass guiding part, and the left-end grass guiding part and the middle connecting part, as well as the middle connecting part and the right-end grass guiding part, can undergo vertical relative displacement due to the movable connecting holes.

[0013] Furthermore, the left-end grass guide and the right-end grass guide are connected by an intermediate connecting part;

[0014] The movable connecting holes on the left and right grass guiding parts are obliquely or vertically arranged elongated holes, while the movable connecting hole on the middle connecting part is a round hole. The movable connecting holes on the left and middle connecting parts are used to install bolt assemblies or pin assemblies, and there is a gap between the left grass guiding part and the middle connecting part, which is in a relatively loose state.

[0015] The movable connecting hole on the right end grass guide and the movable connecting hole on the middle connecting part are used to install a bolt assembly or a pin assembly, and there is a gap between the right end grass guide and the middle connecting part, so they are in a relatively loose state.

[0016] Furthermore, the left end of the left-end grass guide is provided with a left-end mounting part, and the left-end mounting part is connected to the left part of the roller cover by a bolt assembly;

[0017] The right end of the right-end grass guide is provided with a right-end mounting part, which is connected to the right side of the roller cover by a bolt assembly.

[0018] Furthermore, it also includes a mounting plate, wherein two or three adjacent left-end mounting portions are mounted to the roller cover via one of the mounting plates;

[0019] Two or three adjacent right-end mounting portions are mounted to the roller cover via a mounting plate.

[0020] Furthermore, it also includes an angle adjustment structure, which includes a main reinforcing longitudinal beam and an adjustment handle. The main reinforcing longitudinal beam is located on the outside of the roller cover. Each of the intermediate connecting parts is connected to the main reinforcing longitudinal beam through a main bolt assembly. The main bolt assembly is the rotating component. The roller cover has multiple main transverse sliding holes along the front-back direction. The main bolt assembly passes through the main transverse sliding holes and can move along the front-back direction within the main transverse sliding holes.

[0021] The main bolt assembly includes a stud and a nut. The stud has an integral upper and lower threaded portion and a rounded portion. The diameter of the rounded portion is larger than the diameter of the threaded portion. The rounded portion is located inside the roller cover and is fixedly connected to the intermediate connecting portion. The threaded portion is located outside the roller cover, and the nut is installed on the threaded portion.

[0022] The adjusting handle is located on the outside of the roller cover, and one end of the adjusting handle is connected and fixed to the main reinforcing longitudinal beam through a top bolt assembly. The top bolt assembly has the same structure as the main bolt assembly, and a top transverse sliding hole is opened on the adjusting handle along the front-back direction. The cylindrical part of the top bolt assembly is connected and fixed to the main reinforcing longitudinal beam.

[0023] Furthermore, the angle adjustment structure also includes an auxiliary reinforcing longitudinal beam, wherein the main reinforcing longitudinal beam and the auxiliary reinforcing longitudinal beam are located on the outer side of the roller cover and are parallel to each other;

[0024] Each of the intermediate connecting parts is connected to the auxiliary reinforcing longitudinal beam by an auxiliary bolt assembly, and the roller cover body has multiple auxiliary transverse sliding holes along the front-back direction. The auxiliary bolt assembly passes through the auxiliary transverse sliding holes and can move in the front-back direction within the auxiliary transverse sliding holes. The auxiliary bolt assembly has the same structure as the main bolt assembly, and the round rod part of the auxiliary bolt assembly is connected and fixed to the intermediate connecting part.

[0025] The top of the auxiliary reinforcing longitudinal beam is provided with a column, and the other end of the adjusting handle is provided with a through hole, with the column located inside the through hole.

[0026] Furthermore, the intermediate connecting part is provided with a longitudinal beam connecting part, and the main reinforcing longitudinal beam is connected to the longitudinal beam connecting part by a plurality of the main bolt assemblies.

[0027] Furthermore, the grass guide plate structure also includes an arc-shaped grass guide plate, with multiple arc-shaped grass guide plates arranged along the front-back direction on the inner side of the roller cover, and the segmented grass guide plate arranged in the front and middle sections of the roller cover, and the arc-shaped grass guide plate arranged in the rear section of the roller cover.

[0028] Furthermore, six segmented grass guide plates are arranged in sequence, and four arc-shaped grass guide plates are arranged in sequence.

[0029] A combine harvester, including the aforementioned drum cover.

[0030] Compared with the prior art, the beneficial effects of this utility model are:

[0031] This application provides a roller cover (arc-shaped roller cover) that innovates upon existing grass guide plate structures. The grass guide plate structure includes multiple segmented grass guide plates, each segmented by a left-end grass guide section, at least one intermediate connecting section, and a right-end grass guide section sequentially spliced ​​together. Multiple movable connecting holes are provided on the left-end grass guide section, the intermediate connecting section, and the right-end grass guide section. Connecting components (such as bolt assemblies or pin assemblies) are installed in different movable connecting holes between the left-end grass guide section and the intermediate connecting section, and between the intermediate connecting section and the right-end grass guide section, to adjust the length of the segmented grass guide plate. This allows for flexible adjustment of the segmented grass guide plate's length, enabling it to match roller cover bodies of more widths and adapt to various working conditions. It overcomes the limitation of ordinary arc-shaped roller cover grass guide plates being unadjustable, making it suitable for multiple working conditions and effectively reducing losses. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the structure of an arc-shaped roller cover in the prior art;

[0034] Figure 2 This is a schematic diagram of the grass guide plate in an arc-shaped roller cover in the prior art;

[0035] Figure 3 This is a schematic diagram of the structure of a square roller cover in the prior art;

[0036] Figure 4 This is a schematic diagram of the grass guide plate in a square roller cover in the prior art;

[0037] Figure 5 This is a schematic diagram of the structure of the roller cover of this utility model;

[0038] Figure 6 This is a top view of the roller cover of this utility model;

[0039] Figure 7 This is a schematic diagram of the segmented grass guide plate and adjustment structure of this utility model;

[0040] Figure 8 This is a schematic diagram of the segmented grass guide plate of this utility model;

[0041] Figure 9 This is a structural schematic diagram of the top bolt assembly, main bolt assembly, or auxiliary bolt assembly of this utility model.

[0042] In the picture:

[0043] 1-Roller cover;

[0044] 2-Segmented grass guide plate; 201-Left end grass guide part; 2011-Left end mounting part; 202-Middle connecting part; 2021-Longitudinal beam connecting part; 203-Right end grass guide part; 2031-Right end mounting part; 204-Modible connecting hole; 205-Square hole;

[0045] 3-Arc-shaped grass guide plate;

[0046] 4-Mounting plate;

[0047] 5-Main reinforcing longitudinal beam; 6-Secondary reinforcing longitudinal beam; 7-Adjusting handle; 8-Column;

[0048] 901 - Screw section; 902 - Round rod section; 903 - Nut; 904 - Washer. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0050] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0051] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0052] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. 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. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0053] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0054] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 mechanical connection or an electrical 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 based on the specific circumstances.

[0055] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0056] Example 1

[0057] The harvester drum cover is one of the core components of the threshing system. It is mainly used to cover the threshing drum and guide the flow of crops to ensure the efficiency and separation effect of the threshing process.

[0058] like Figures 5-9 As shown, this embodiment provides a roller cover, including an arc-shaped roller cover body 1 and a grass guide plate structure disposed inside the roller cover body 1. The roller cover is an arc-shaped roller cover type. The length direction of the roller cover body 1 is the front-to-back direction. The grass guide plate structure includes segmented grass guide plates 2. Multiple segmented grass guide plates 2 are evenly arranged on the inner side of the roller cover body 1 along the front-to-back direction. The length of the segmented grass guide plates 2 is adjustable.

[0059] Specifically, the segmented grass guide plate 2 is formed by sequentially splicing the left grass guide part 201, at least one intermediate connecting part 202 and the right grass guide part 203. The segmented grass guide plate 2 is arc-shaped and matches the shape of the roller cover 1 so that it can be attached to the inner wall of the roller cover 1.

[0060] The top surface of the middle connecting part 202 is attached to the inner wall of the roller cover 1 and is rotatably connected to the roller cover 1 through a rotating component. The left end of the left grass guide part 201 and the right end of the right grass guide part 203 are respectively connected to the left side wall and the right side wall of the roller cover 1.

[0061] Multiple movable connecting holes 204 are provided on the left-end grass guide 201, the middle connecting part 202, and the right-end grass guide 203. These three parts are arc-shaped, and the multiple movable connecting holes 204 are formed along their arc paths. A bolt assembly or pin assembly is installed in both a movable connecting hole 204 on the left-end grass guide 201 and a movable connecting hole 204 on the middle connecting part 202 to establish a connection. Similarly, a bolt assembly or pin assembly is installed in both a movable connecting hole 204 on the right-end grass guide 203 and a movable connecting hole 204 on the middle connecting part 202 to establish a connection. When two or more middle connecting parts 202 are provided, adjacent middle connecting parts 202 are also connected by installing bolt assemblies or pin assemblies in their movable connecting holes 204. The relative vertical displacement between the left grass guide part 201 and the middle connecting part 202, and between the middle connecting part 202 and the right grass guide part 203, is possible due to the movable connecting hole 204. This allows the segmented grass guide plate 2 to be adjusted according to the curvature of the inner wall of the roller cover 1, so that the segmented grass guide plate 2 and the inner wall of the roller cover 1 are in corresponding fit.

[0062] Preferably, in this embodiment, only one intermediate connecting part 202 is provided between the left-end grass guiding part 201 and the right-end grass guiding part 203. The left-end grass guiding part 201, the intermediate connecting part 202 and the right-end grass guiding part 203 are connected in sequence and form an arc shape after splicing. When the segmented grass guiding plate 2 is actually installed on the roller cover 1, the top surface of the intermediate connecting part 202 is in contact with the inner wall of the roller cover 1 and is rotatably connected to the roller cover 1 through a rotating part. The left end of the left-end grass guiding part 201 and the right end of the right-end grass guiding part 203 are respectively connected to the left side wall and the right side wall of the roller cover 1.

[0063] The movable connecting holes 204 on the left-end grass guide 201 and the right-end grass guide 203 are elongated holes that are either inclined or vertically arranged to allow for vertical adjustment. The movable connecting hole 204 on the middle connecting part 202 is a round hole. The movable connecting holes 204 on the left-end grass guide 201 and the middle connecting part 202 are used together to install bolt assemblies or pin assemblies, and there is a gap between the left-end grass guide 201 and the middle connecting part 202, resulting in a relatively loose state. The movable connecting holes 204 on the right-end grass guide 203 and the middle connecting part 202 are used together to install bolt assemblies or pin assemblies, and there is a gap between the right-end grass guide 203 and the middle connecting part 202, resulting in a relatively loose state. That is, after the left grass guide part 201 and the middle connecting part 202 are connected by bolt assembly or pin assembly, there is a gap between them. After the right grass guide part 203 and the middle connecting part 202 are connected by bolt assembly or pin assembly, there is also a gap between them. This allows the left grass guide part 201, the middle connecting part 202 and the right grass guide part 203 to rotate or deflect relative to each other, thereby enabling the angle adjustment of the three-section grass guide plate itself.

[0064] To facilitate connection with the roller cover 1, a left-end mounting part 2011 is provided at the left end of the left-end grass guide part 201, and a right-end mounting part 2031 is provided at the right end of the right-end grass guide part 203. The left-end mounting part 2011 is connected to the left side of the roller cover 1 by a bolt assembly, and the right-end mounting part 2031 is connected to the right side of the roller cover 1 by a bolt assembly. This facilitates the connection and fixation of the segmented grass guide plate 2 with the roller cover 1. Since the left-end mounting part 2011 and the right-end mounting part 2031 can increase the contact area with the inner wall of the roller cover 1, the connection effect of the segmented grass guide plate 2 with the roller cover 1 can also be improved.

[0065] Furthermore, two or three adjacent segmented grass guide plates 2 are grouped together, with an installation plate 4 set on each of the left and right sides of each group. Taking two segmented grass guide plates 2 as a group as an example: the two left-end installation parts 2011 of each group are connected to one installation plate 4, and the two right-end installation parts 2031 of each group are also connected to one installation plate 4. Thus, the left and right sides of each group can be installed on the inner wall of the roller cover 1 through an installation plate 4. Since the area of ​​the installation plate 4 is larger than that of the two left-end installation parts 2011 or right-end installation parts 2031 of each group, the contact area with the inner wall of the roller cover 1 is also larger, which can further improve the connection effect between the segmented grass guide plates 2 and the roller cover 1. In addition, designing multiple segmented grass guide plates 2 into multiple groups can facilitate actual assembly, save assembly time, and improve the assembly effect.

[0066] Preferably, bolt holes are respectively provided on the left mounting part 2011, the right mounting part 2031, the mounting plate 4, and the roller cover 1. The left mounting part 2011 is connected and fixed to its corresponding mounting plate 4 and the roller cover 1 by bolt assemblies. The right mounting part 2031 is also connected and fixed to its corresponding mounting plate 4 and the roller cover 1 by bolt assemblies. It should be noted that the bolt holes on the left mounting part 2011 and the right mounting part 2031 are designed as square holes 205. After the bolts are installed in the square holes 205, there is a large adjustment gap to facilitate the adjustment of the installation angle of the segmented grass guide plate 2. When the segmented grass guide plate 2 needs to be adjusted in terms of its installation angle, loosen the upper bolt assembly connecting the mounting plate 4 and the roller cover 1 (without removing the bolt assembly). Then, by manually bending the segmented grass guide plate 2, relative rotation or deflection can occur due to the gaps between the left grass guide part 201, the middle connecting part 202, and the right grass guide part 203. This allows for the adjustment of the angle of the three-section grass guide plate itself, enabling fine-tuning of the angle of the segmented grass guide plate 2. After adjustment, tighten the loosened bolt assembly on the mounting plate 4 slightly to complete the angle adjustment of the segmented grass guide plate 2.

[0067] In this embodiment, the grass guide plate structure also includes arc-shaped grass guide plates 3. Multiple arc-shaped grass guide plates 3 are arranged along the front-to-back direction on the inner side of the roller cover 1. Segmented grass guide plates 2 are arranged in the front and middle sections of the roller cover 1, and arc-shaped grass guide plates 3 are arranged in the rear section of the roller cover 1. Six segmented grass guide plates 2 are arranged sequentially, and four arc-shaped grass guide plates 3 are arranged sequentially, such as... Figure 5 As shown. Note that the structure of this arc-shaped grass guide plate 3 is the same as that of the existing arc-shaped roller cover grass guide plate.

[0068] In this embodiment, an angle adjustment structure was designed to facilitate uniform adjustment of all segmented grass guide plates 2 and improve adjustment speed and convenience.

[0069] The angle adjustment structure includes a main reinforcing longitudinal beam 5 and an adjustment handle 7. The main reinforcing longitudinal beam 5 is located on the outside of the roller cover 1. Each intermediate connecting part 202 is connected to the main reinforcing longitudinal beam 5 through a main bolt assembly. The main bolt assembly is a rotating part. The roller cover 1 has multiple main transverse sliding holes along the front and rear direction. The main bolt assembly passes through the main transverse sliding holes and can move along the front and rear direction within the main transverse sliding holes.

[0070] The main bolt assembly includes a stud and a nut 903. The stud has an integral upper and lower threaded part 901 and a round part 902. The diameter of the round part 902 is larger than the diameter of the threaded part 901. The round part 902 is located inside the roller cover 1 and is fixedly connected to the intermediate connecting part 202. The threaded part 901 is located outside the roller cover 1, and the nut 903 is installed on the threaded part 901. Several washers 904 can also be installed inside the nut 903.

[0071] The adjusting handle 7 is located on the outside of the roller cover 1, and one end of the adjusting handle 7 is connected and fixed to the main reinforcing longitudinal beam 5 through the top bolt assembly. The top bolt assembly has the same structure as the main bolt assembly, and a top transverse sliding hole is opened on the adjusting handle 7 along the front and rear direction. The cylindrical part of the top bolt assembly is connected and fixed to the main reinforcing longitudinal beam 5.

[0072] The angle adjustment structure also includes an auxiliary reinforcing longitudinal beam 6. The main reinforcing longitudinal beam 5 and the auxiliary reinforcing longitudinal beam 6 are located on the outer side of the roller cover 1 and are parallel to each other.

[0073] Each intermediate connecting part 202 is connected to the auxiliary reinforcing longitudinal beam 6 via an auxiliary bolt assembly. The roller cover 1 has multiple auxiliary transverse sliding holes along the front-to-back direction. The auxiliary bolt assembly passes through these holes and can move within them in the front-to-back direction. The auxiliary bolt assembly has the same structure as the main bolt assembly, and the round rod portion 902 of the auxiliary bolt assembly is fixedly connected to the intermediate connecting part 202. Figure 9 As shown, the top bolt assembly, main bolt assembly, and auxiliary bolt assembly have the same structure.

[0074] A column 8 is provided on the top of the auxiliary reinforcing longitudinal beam 6, and a through hole is provided on the other end of the adjusting handle 7, with the column 8 located inside the through hole.

[0075] The intermediate connecting part 202 is provided with a longitudinal beam connecting part 2021, and the main reinforcing longitudinal beam 5 is connected to the longitudinal beam connecting part 2021 by a main bolt assembly.

[0076] When the segmented grass guide plate 2 needs to be adjusted in terms of its installation angle, loosen the upper bolt assembly connecting the mounting plate 4 and the roller cover 1 (without disassembling the bolt assembly). Then, manually turn the adjusting handle 7. Since the main bolt assembly can move within a certain range in the main transverse hole and the auxiliary bolt assembly can also move within a certain range in the auxiliary transverse hole, and because there are gaps between the left grass guide part 201, the middle connecting part 202, and the right grass guide part 203 of the three-segment grass guide plate, relative rotation or deflection can occur. When the adjusting handle is turned... After step 7, the main reinforcing longitudinal beam 5 and / or the auxiliary reinforcing longitudinal beam 6 are moved laterally, which in turn causes the middle connecting part 202 of the segmented grass guide plate 2 to rotate around the rotating part, thereby causing the left and right connecting parts to deflect, ultimately achieving a slight rotation of all the segmented grass guide plates 2, and realizing a fine adjustment of the angle of the segmented grass guide plate 2. In fact, the angle of the segmented grass guide plate 2 can be finely adjusted within ±3°. After the adjustment is completed, tighten the loose bolt assembly on the mounting plate 4 a little to complete the angle adjustment of the segmented grass guide plate 2.

[0077] Example 2

[0078] A combine harvester, including the aforementioned drum cover.

[0079] The beneficial effects of the technical solution of this utility model are:

[0080] This application provides a roller cover (arc-shaped roller cover) that innovates upon the existing grass guide plate structure. The grass guide plate structure includes multiple segmented grass guide plates 2, each segmented grass guide plate 2 being sequentially spliced ​​from a left-end grass guide section 201, at least one intermediate connecting section 202, and a right-end grass guide section 203. Multiple movable connecting holes 204 are respectively provided on the left-end grass guide section 201, the intermediate connecting section 202, and the right-end grass guide section 203. The length of the segmented grass guide plate 2 can be adjusted by installing connecting components (such as bolt assemblies or pin assemblies) within different movable connecting holes 204 between the left-end grass guide section 201 and the intermediate connecting section 202, and between the intermediate connecting section 202 and the right-end grass guide section 203. This allows the segmented grass guide plate 2 to flexibly adjust its length, thus matching roller cover bodies 1 of more widths and adapting to various working conditions. It overcomes the limitation of ordinary arc-shaped roller cover grass guide plates being unable to be adjusted, is applicable to multiple working conditions, and can effectively reduce losses.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

[0082] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A roller cover, comprising an arc-shaped roller cover body (1) and a guide plate structure disposed inside the roller cover body (1), wherein the length direction of the roller cover body (1) is the front-to-back direction, characterized in that, The grass guide plate structure includes a segmented grass guide plate (2), and multiple segmented grass guide plates (2) are evenly arranged on the inner side of the roller cover (1) in the front-back direction; the segmented grass guide plate (2) is formed by sequentially splicing the left grass guide part (201), at least one intermediate connecting part (202) and the right grass guide part (203), and the segmented grass guide plate (2) is arc-shaped as a whole and matches the shape of the roller cover (1) so that it can be correspondingly attached to the inner wall of the roller cover (1); The top surface of the intermediate connecting part (202) is attached to the inner wall of the roller cover (1) and is rotatably connected to the roller cover (1) through a rotating part. The left end of the left grass guide part (201) and the right end of the right grass guide part (203) are respectively connected to the left side wall and the right side wall of the roller cover (1). Multiple movable connecting holes (204) are respectively provided on the left end grass guide part (201), the middle connecting part (202) and the right end grass guide part (203), and the left end grass guide part (201) and the middle connecting part (202), and the middle connecting part (202) and the right end grass guide part (203) can undergo vertical relative displacement due to the movable connecting holes (204).

2. The roller cover according to claim 1, characterized in that, The left-end grass guide (201) and the right-end grass guide (203) are connected by an intermediate connecting part (202); The movable connecting holes (204) on the left-end grass guide (201) and the right-end grass guide (203) are obliquely or vertically arranged elongated holes, and the movable connecting hole (204) on the middle connecting part (202) is a round hole. The movable connecting holes (204) on the left-end grass guide (201) and the movable connecting holes (204) on the middle connecting part (202) are used to install bolt assemblies or pin assemblies, and there is a gap between the left-end grass guide (201) and the middle connecting part (202) so that they are in a relatively loose state. The movable connecting hole (204) on the right end grass guide (203) and the movable connecting hole (204) on the middle connecting part (202) are used to install a bolt assembly or a pin assembly, and there is a gap between the right end grass guide (203) and the middle connecting part (202) so that they are in a relatively loose state.

3. The roller cover according to claim 1, characterized in that, The left end of the left grass guide (201) is provided with a left end mounting part (2011), and the left end mounting part (2011) is connected to the left side of the roller cover (1) by a bolt assembly. The right end of the right-end grass guide (203) is provided with a right-end mounting part (2031), and the right-end mounting part (2031) is connected to the right side of the roller cover (1) by a bolt assembly.

4. The roller cover according to claim 3, characterized in that, It also includes a mounting plate (4), and two or three adjacent left end mounting parts (2011) are mounted to the roller cover (1) via one of the mounting plates (4); Two or three adjacent right-end mounting portions (2031) are mounted on the roller cover (1) via a mounting plate (4).

5. The roller cover according to claim 1, characterized in that, It also includes an angle adjustment structure, which includes a main reinforcing longitudinal beam (5) and an adjustment handle (7). The main reinforcing longitudinal beam (5) is located on the outside of the roller cover (1). Each intermediate connecting part (202) is connected to the main reinforcing longitudinal beam (5) through a main bolt assembly. The main bolt assembly is the rotating part. The roller cover (1) has multiple main transverse sliding holes in the front-back direction. The main bolt assembly passes through the main transverse sliding holes and can move in the front-back direction within the main transverse sliding holes. The main bolt assembly includes a stud and a nut (903). The stud has an integral upper and lower threaded portion (901) and a round portion (902). The diameter of the round portion (902) is larger than the diameter of the threaded portion (901). The round portion (902) is located inside the roller cover (1) and is fixedly connected to the intermediate connecting portion (202). The threaded portion (901) is located outside the roller cover (1), and the nut (903) is installed on the threaded portion (901). The adjusting handle (7) is located on the outside of the roller cover (1), and one end of the adjusting handle (7) is connected and fixed to the main reinforcing longitudinal beam (5) by a top bolt assembly. The top bolt assembly has the same structure as the main bolt assembly, and a top transverse hole is opened on the adjusting handle (7) along the front and rear direction. The cylindrical part of the top bolt assembly is connected and fixed to the main reinforcing longitudinal beam (5).

6. The roller cover according to claim 5, characterized in that, The angle adjustment structure also includes an auxiliary reinforcing longitudinal beam (6), wherein the main reinforcing longitudinal beam (5) and the auxiliary reinforcing longitudinal beam (6) are located on the outside of the roller cover (1) and are parallel to each other; Each of the intermediate connecting parts (202) is connected to the auxiliary reinforcing longitudinal beam (6) by an auxiliary bolt assembly, and the roller cover (1) has multiple auxiliary transverse sliding holes in the front-back direction. The auxiliary bolt assembly passes through the auxiliary transverse sliding holes and can move in the front-back direction within the auxiliary transverse sliding holes. The auxiliary bolt assembly has the same structure as the main bolt assembly, and the round rod part (902) of the auxiliary bolt assembly is connected and fixed to the intermediate connecting part (202). The top of the auxiliary reinforcing longitudinal beam (6) is provided with a column (8), and the other end of the adjusting handle (7) is provided with a through hole, and the column (8) is located in the through hole.

7. The roller cover according to claim 5, characterized in that, The intermediate connecting part (202) is provided with a longitudinal beam connecting part (2021), and the main reinforcing longitudinal beam (5) is connected to the longitudinal beam connecting part (2021) through the main bolt assembly.

8. The roller cover according to claim 1, characterized in that, The grass guide plate structure also includes an arc-shaped grass guide plate (3), and multiple arc-shaped grass guide plates (3) are arranged on the inner side of the roller cover (1) in the front-back direction. The segmented grass guide plate (2) is arranged in the front and middle sections of the roller cover (1), and the arc-shaped grass guide plate (3) is arranged in the rear section of the roller cover (1).

9. The roller cover according to claim 8, characterized in that, The segmented grass guide plates (2) are arranged in six sections in sequence, and the arc-shaped grass guide plates (3) are arranged in four sections in sequence.

10. A combine harvester, characterized in that, Includes the roller cover as described in any one of claims 1-9.

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