Roller device and harvester

Abstract

The utility model provides a roller device and a harvester, relates to the technical field of agricultural equipment, and aims to optimize the structure of the roller device to a certain extent and improve the comprehensive performance of a threshing roller. The utility model provides a roller device which comprises a positioning assembly, a first rasp bar assembly, a second rasp bar assembly and a driving shaft. The positioning assembly is connected with the driving shaft, a positioning part is formed in the circumferential direction of the positioning assembly, the first rasp bar assembly comprises a plurality of first rasp bar blocks, a plurality of first bar teeth and a plurality of first connecting rods, the first rasp bar blocks and the first bar teeth are alternately arranged at intervals in the axial direction of the first connecting rods, and the first connecting rods are all connected with the positioning part; the second rasp bar assembly comprises a plurality of second rasp bar blocks, a plurality of second bar teeth and a plurality of second connecting rods, the second rasp bar blocks and the second bar teeth are alternately arranged at intervals in the axial direction of the second connecting rods, the second connecting rods are connected with the positioning part, and the first connecting rods and the second connecting rods are alternately and evenly distributed in the circumferential direction of the positioning assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural equipment, in particular to a drum device and a harvester. Background Art

[0002] Crop combine harvesters are mainly divided into four product technology platforms: key type straw walker, single longitudinal axial flow, double longitudinal axial flow, and transverse axial flow according to different threshing and separating devices. Among them, the key type straw walker models need to use a transversely arranged tangential flow drum to complete the threshing function. In addition, some mid - to - high - end single longitudinal axial flow models and double longitudinal axial flow models are also equipped with tangential flow drums to improve the threshing effect of grains.

[0003] At present, there are mainly two types of tangential flow drums: rod - tooth drums and rasp - bar drums. The threshing principle of the rod - tooth drum is impact threshing, which threshes by the mutual impact of the threshing elements and the ear heads of grains. The higher the impact speed, the stronger the threshing ability. The threshing principle of the rasp - bar drum is rubbing threshing, which threshes grains by the mutual friction between the threshing elements and the grains, as well as between the grains. However, both types of tangential flow drums have corresponding disadvantages. The rod - tooth drum has complete threshing, but has high requirements for rotational speed and consumes more power. The rasp - bar drum has a better threshing effect, but due to smaller threshing gaps, it is more likely to cause grain breakage.

[0004] Therefore, there is an urgent need to provide a drum device and a harvester to solve the problems existing in the prior art to a certain extent. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a drum device and a harvester to optimize the structure of the drum device and improve the comprehensive performance of the threshing drum to a certain extent.

[0006] A drum device provided by the utility model includes a positioning component, a first rasp - bar component, a second rasp - bar component, and a driving shaft; the positioning component is connected to the driving shaft, and a positioning part is formed along the circumference of the positioning component. The first rasp - bar component includes a plurality of first rasp - bar blocks, a plurality of first rod teeth, and a plurality of first connecting rods. The first rasp - bar blocks and the first rod teeth are alternately arranged at intervals along the axial direction of the first connecting rods, and a plurality of the first connecting rods are all connected to the positioning part; the second rasp - bar component includes a plurality of second rasp - bar blocks, a plurality of second rod teeth, and a plurality of second connecting rods. The second rasp - bar blocks and the second rod teeth are alternately arranged at intervals along the axial direction of the second connecting rods, and a plurality of the second connecting rods are all connected to the positioning part, and a plurality of the first connecting rods and a plurality of the second connecting rods are alternately and evenly distributed along the circumference of the positioning component.

[0007] Among them, the first ribbed block is formed with a first pattern, the second ribbed block is formed with a second pattern, the first pattern is evenly distributed along the axial direction of the first ribbed block, the second pattern is evenly distributed along the axial direction of the second ribbed block, and the orientations of the first pattern and the second pattern are opposite.

[0008] Specifically, the first ribbed blocks on the adjacent first connecting rod and the second connecting rod are arranged corresponding to the second rod teeth, and the first rod teeth are arranged corresponding to the second ribbed blocks.

[0009] Among them, the positioning assembly includes a first disc, a second disc, a third disc and a fourth disc which are arranged at equal intervals along the axial direction of the driving shaft; and positioning portions are formed on the first disc, the second disc, the third disc and the fourth disc, and the positioning portions on the first disc, the second disc, the third disc and the fourth disc are arranged in one-to-one correspondence.

[0010] Specifically, a first positioning seat and a second positioning seat are formed on each of the plurality of first ribbed blocks, and the first positioning seat and the second positioning seat are oppositely arranged at both ends of the first ribbed block; a third positioning seat and a fourth positioning seat are formed on each of the plurality of second ribbed blocks, and the third positioning seat and the fourth positioning seat are formed at both ends of the second ribbed block; the first connecting rod passes through the first positioning seat and the second positioning seat and is fixedly connected to the first positioning seat and the second positioning seat, and the second connecting rod passes through the third positioning seat and the fourth positioning seat and is fixedly connected to the third positioning seat and the fourth positioning seat.

[0011] Further, among the two first ribbed blocks on the first connecting rod between the first disc and the second disc, the length of the first positioning seat on the first ribbed block close to the first disc is greater than that of the second positioning seat, and the length of the first positioning seat on the first ribbed block close to the second disc is less than that of the second positioning seat; the sizes of the first positioning seat and the second positioning seat of the first ribbed block between the second disc and the third disc are the same; among the two first ribbed blocks on the first connecting rod between the third disc and the fourth disc, the length of the first positioning seat on the first ribbed block close to the third disc is greater than that of the second positioning seat, and the length of the first positioning seat on the first ribbed block close to the fourth disc is less than that of the second positioning seat.

[0012] Further, the lengths of the third positioning seat and the fourth positioning seat on the second stripper bar block between the first disc and the second disc on the second connecting rod are the same; among the two second stripper bar blocks between the second disc and the third disc, the length of the first positioning seat on the second stripper bar block closer to the second disc is greater than the length of the second positioning seat, and the length of the first positioning seat on the second stripper bar block closer to the third disc is less than the length of the second positioning seat; the lengths of the third positioning seat and the fourth positioning seat on the second stripper bar block between the third disc and the fourth disc are the same.

[0013] Further, the drum device provided by the present utility model further includes a connecting member, and both the first positioning seat and the second positioning seat are connected to the positioning assembly through the connecting member.

[0014] Furthermore, both the first connecting rod and the second connecting rod are cylindrical structures.

[0015] Compared with the prior art, the drum device provided by the present utility model has the following advantages:

[0016] The drum device provided by the present utility model includes a positioning assembly, a first stripper bar assembly, a second stripper bar assembly, and a drive shaft; the positioning assembly is connected to the drive shaft, a positioning portion is formed along the circumference of the positioning assembly, the first stripper bar assembly includes a plurality of first stripper bar blocks, a plurality of first rod teeth, and a plurality of first connecting rods, the first stripper bar blocks and the first rod teeth are alternately arranged at intervals along the axial direction of the first connecting rod, and a plurality of first connecting rods are all connected to the positioning portion; the second stripper bar assembly includes a plurality of second stripper bar blocks, a plurality of second rod teeth, and a plurality of second connecting rods, the second stripper bar blocks and the second rod teeth are alternately arranged at intervals along the axial direction of the second connecting rod, a plurality of second connecting rods are all connected to the positioning portion, and a plurality of first connecting rods and a plurality of second connecting rods are alternately arranged evenly along the circumference of the positioning assembly.

[0017] It can be analyzed from this that through the positioning portion formed circumferentially by the positioning assembly, the first connecting rod and the second connecting rod included in the first stripper bar assembly and the second stripper bar assembly can be stably carried. And since the first stripper bar assembly includes first stripper bar blocks and the second stripper bar assembly includes second stripper bar blocks in this application, therefore, by alternately arranging the first connecting rod and the second connecting rod evenly along the circumference of the positioning assembly, an overall drum device structure with the first stripper bar blocks and the second stripper bar blocks arranged alternately along the circumference can be formed, so that the drum device provided by this application can have the threshing effect of a stripper drum.

[0018] Since the first rasp bar assembly and the second rasp bar assembly in the present application further include first bar teeth and second bar teeth, and the first bar teeth and the first rasp bar blocks are alternately arranged at intervals along the axial direction of the first connecting rod, and the second bar teeth and the second rasp bar blocks are alternately arranged at intervals along the axial direction of the second connecting rod, therefore, during the operation of the device, the first bar teeth and the second bar teeth can continuously strike and impact the grains, so as to achieve the purpose of threshing. Moreover, since the first connecting rod and the second connecting rod are also provided with the first rasp bar blocks and the second rasp bar blocks, therefore, under the cooperative operation of the first bar teeth and the second bar teeth, the interval between the first rasp bar blocks and the second rasp bar blocks in the present application does not need to be very small, and under the cooperative operation of the first rasp bar blocks and the second rasp bar blocks, the first bar teeth and the second bar teeth do not need to adopt a high rotation speed either. That is, the first bar teeth and the second bar teeth first strike and collide with the grains to make part of the outer shell fall off or partially fall off or become loose, and then through the friction between the first rasp bar blocks and the second rasp bar blocks, the complete separation of the outer shell is realized, so as to achieve the overall threshing effect, greatly improving the comprehensive performance of the overall threshing cylinder.

[0019] In addition, the present utility model further provides a harvester, including the above-mentioned drum device.

[0020] The harvester adopting the drum device provided by the present application has the advantages of complete threshing of the bar tooth drum and can also achieve a certain degree of threshing effect of the rasp bar drum during the threshing stage. Moreover, through the mutual cooperation between the bar teeth and the rasp bar blocks, it is neither necessary for the drum to have a high rotation speed to meet the operation requirements of the bar teeth, nor is it necessary to set a small gap to meet the operation requirements of the rasp bar blocks. Thus, it can not only avoid the breakage of the grains, but also reduce the energy consumption of the overall equipment operation. Description of the Drawings

[0021] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a schematic diagram of the overall structure of the drum device provided by the embodiment of the present utility model;

[0023] Figure 2 It is a schematic diagram of the structure of the first rasp bar assembly in the drum device provided by the embodiment of the present utility model.

[0024] In the figure: 1 - drive shaft; 2 - first disk; 3 - second disk; 4 - third disk; 5 - fourth disk; 6 - first stripper bar block; 601 - first pattern; 602 - first positioning seat; 603 - second positioning seat; 7 - first rod tooth; 8 - first connecting rod; 9 - second stripper bar block; 901 - second pattern; 902 - third positioning seat; 903 - fourth positioning seat; 10 - second rod tooth; 11 - second connecting rod; 12 - connecting piece. Detailed implementation manners

[0025] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are only a part rather than all of the embodiments of the present application. Usually, the components of the embodiments of the present application described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application claimed, but merely represents the selected embodiments of the present application. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.

[0026] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0027] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only 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 inclined.

[0028] In the description of the embodiments of the present application, it should also be noted that, unless otherwise clearly specified and limited, the terms "arranged", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the connection inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0029] As used herein, the term "and / or" includes any one of the listed related items and any combination of any two or more of them.

[0030] For ease of description, spatial relationship terms such as "above", "upper", "below", and "lower" can be used herein to describe the relationship between one element and another as shown in the drawings. Such spatial relationship terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the drawings.

[0031] The terms used herein are only for describing various examples and are not intended to limit the present disclosure. Unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. The terms "comprises", "comprising", and "having" list the stated features, quantities, operations, components, elements, and / or combinations thereof that exist, but do not preclude the existence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0032] Due to manufacturing techniques and / or tolerances, variations in the shapes shown in the drawings may occur. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings, but include changes in shape that occur during manufacturing.

[0033] The features of the examples described herein can be combined in various ways that will be apparent after understanding the disclosure of the present application. In addition, although the examples described herein have various configurations, other configurations are possible as will be apparent after understanding the disclosure of the present application. Additionally, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0034] As Figure 1As shown in the figure, the utility model provides a drum device, which includes a positioning component, a first ribbed bar component, a second ribbed bar component and a driving shaft 1; the positioning component is connected to the driving shaft 1, and a positioning portion is formed along the circumference of the positioning component. The first ribbed bar component includes a plurality of first ribbed bar blocks 6, a plurality of first rod teeth 7 and a plurality of first connecting rods 8. The first ribbed bar blocks 6 and the first rod teeth 7 are alternately arranged at intervals along the axial direction of the first connecting rod 8. A plurality of first connecting rods 8 are all connected to the positioning portion; the second ribbed bar component includes a plurality of second ribbed bar blocks 9, a plurality of second rod teeth 10 and a plurality of second connecting rods 11. The second ribbed bar blocks 9 and the second rod teeth 10 are alternately arranged at intervals along the axial direction of the second connecting rod 11. A plurality of second connecting rods 11 are all connected to the positioning portion, and a plurality of first connecting rods 8 and a plurality of second connecting rods 11 are alternately arranged evenly along the circumference of the positioning component.

[0035] Compared with the prior art, the drum device provided by the utility model has the following advantages:

[0036] For the drum device provided by the utility model, through the positioning portion formed circumferentially by the positioning component, the first connecting rod 8 and the second connecting rod 11 included in the first ribbed bar component and the second ribbed bar component can be stably carried. And since the first ribbed bar component in this application includes the first ribbed bar block 6 and the second ribbed bar component includes the second ribbed bar block 9, therefore, by alternately arranging the first connecting rod 8 and the second connecting rod 11 evenly along the circumference of the positioning component, an overall drum device structure with the first ribbed bar block 6 and the second ribbed bar block 9 arranged alternately along the circumference can be formed, so that the drum device provided by this application can have the threshing effect of a ribbed drum.

[0037] And since the first ribbed bar component and the second ribbed bar component in this application also include the first rod tooth 7 and the second rod tooth 10, and the first rod tooth 7 and the first ribbed bar block 6 are alternately arranged at intervals along the axial direction of the first connecting rod 8, and the second rod tooth 10 and the second ribbed bar block 9 are alternately arranged at intervals along the axial direction of the second connecting rod 11, therefore, through the first rod tooth 7 and the second rod tooth 10, the grains can be continuously knocked and impacted during the operation of the device, so as to achieve the purpose of threshing. And because the first connecting rod 8 and the second connecting rod 11 are also provided with the first ribbed bar block 6 and the second ribbed bar block 9, therefore, under the cooperative operation of the first rod tooth 7 and the second rod tooth 10, the interval between the first ribbed bar block 6 and the second ribbed bar block 9 in this application does not need to be very small, and under the cooperative operation of the first ribbed bar block 6 and the second ribbed bar block 9, the first rod tooth 7 and the second rod tooth 10 do not need to adopt a high rotation speed either, that is, the grains are first knocked and collided by the first rod tooth 7 and the second rod tooth 10 to make part of the outer shell fall off or partially fall off or become loose, and then through the friction of the first ribbed bar block 6 and the second ribbed bar block 9, the complete separation of the outer shell is realized, so as to achieve the overall threshing effect, greatly improving the comprehensive performance of the overall threshing drum.

[0038] Optionally, as Figure 1 Combined withFigure 2 As shown, a first pattern bar block 6 in the present application is formed with a first pattern 601, and a second pattern bar block 9 is formed with a second pattern 901. The first pattern 601 is evenly distributed along the axial direction of the first pattern bar block 6, and the second pattern 901 is evenly distributed along the axial direction of the second pattern bar block 9, and the orientations of the first pattern 601 and the second pattern 901 are opposite.

[0039] Since the pattern directions formed on the first pattern bar block 6 included in the first pattern bar assembly in the present application are opposite to the pattern directions formed on the second pattern bar block 9 included in the second pattern bar assembly, therefore, by evenly distributing the first connecting rod 8 and the second connecting rod 11 alternately along the circumferential direction of the positioning assembly, an overall drum device structure with alternately arranged pattern directions can be formed, so that the threshing effect can be improved through the different pattern directions of two adjacent pattern bar blocks.

[0040] Optionally, as Figure 1 shown, the first pattern bar block 6 on the adjacent first connecting rod 8 and second connecting rod 11 in the present application is arranged corresponding to the second rod tooth 10, and the first rod tooth 7 is arranged corresponding to the second pattern bar block 9.

[0041] In this arrangement method, threshing can be made more uniform. Taking an adjacent first pattern bar assembly and second pattern bar assembly as an example, when the first rod tooth 7 of the first pattern bar assembly impacts and contacts the grains in the corresponding area, under the continuous rotation of the overall drum device, most of the grains in this area will contact the second pattern bar block 9 in the second pattern bar assembly in the next stage, so as to realize threshing in the process of the first rod tooth 7, the second pattern bar block 9, the first rod tooth 7, the second pattern bar block 9, that is, using the rod teeth to impact the grains and using the pattern bars to rub, and realizing the shedding of the grain husks in the cooperation of impact and friction.

[0042] Preferably, as Figure 1 shown, the positioning assembly in the present application includes a first disc 2, a second disc 3, a third disc 4 and a fourth disc 5 which are arranged at equal intervals along the axial direction of the driving shaft 1; and positioning parts are formed on each of the first disc 2, the second disc 3, the third disc 4 and the fourth disc 5, and the positioning parts on the first disc 2, the second disc 3, the third disc 4 and the fourth disc 5 are arranged in one-to-one correspondence.

[0043] It can be understood that the number of discs in the present application being four is only one of the better embodiments, and the number can be increased according to specific requirements. Correspondingly, when the number of discs increases, the axial lengths of the first connecting rod 8 and the second connecting rod 11 will also increase accordingly, and the number of rod teeth and pattern bars installed thereon will also increase accordingly. The increase rule can be according to the above method.

[0044] Correspondingly, the positioning parts on each disc in the present application correspond to each other, so as to ensure the positioning of the first connecting rod 8 and the second connecting rod 11.

[0045] Optionally, as Figure 1 shown in combination with Figure 2 Figure 5, on multiple first stripper bar blocks 6 in the present application, a first positioning seat 602 and a second positioning seat 603 are both formed. The first positioning seat 602 and the second positioning seat 603 are oppositely arranged at two ends of the first stripper bar block 6; on multiple second stripper bar blocks 9, a third positioning seat 902 and a fourth positioning seat 903 are both formed. The third positioning seat 902 and the fourth positioning seat 903 are formed at two ends of the second stripper bar block 9; a first connecting rod 8 passes through the first positioning seat 602 and the second positioning seat 603 and is fixedly connected to the first positioning seat 602 and the second positioning seat 603. A second connecting rod 11 passes through the third positioning seat 902 and the fourth positioning seat 903 and is fixedly connected to the third positioning seat 902 and the fourth positioning seat 903.

[0046] The first stripper bar block 6 and the second stripper bar block 9 in the present application are connected to the first connecting rod 8 and the second connecting rod 11 through the corresponding first positioning seat 602 and second positioning seat 603, and the third positioning seat 902 and the fourth positioning seat 903. Moreover, the connection with the corresponding disk is realized through the first positioning seat 602 and the second positioning seat 603, and the third positioning seat 902 and the fourth positioning seat 903.

[0047] Correspondingly, as Figure 1 shown in combination with Figure 6, among the two first stripper bar blocks 6 on the first connecting rod 8 between the first disk 2 and the second disk 3, the length of the first positioning seat 602 on the first stripper bar block 6 close to the first disk 2 is greater than the length of the second positioning seat 603, and the length of the first positioning seat 602 on the first stripper bar block 6 close to the second disk 3 is less than the length of the second positioning seat 603; the sizes of the first positioning seat 602 and the second positioning seat 603 of the first stripper bar block 6 between the second disk 3 and the third disk 4 are the same; among the two first stripper bar blocks 6 between the third disk 4 and the fourth disk 5, the length of the first positioning seat 602 on the first stripper bar block 6 close to the third disk 4 is greater than the length of the second positioning seat 603, and the length of the first positioning seat 602 on the first stripper bar block 6 close to the fourth disk 5 is less than the length of the second positioning seat 603, so as to realize the connection with the corresponding disk through the corresponding first positioning seat 602 or second positioning seat 603.

[0048] And in combination with Figure 1As shown, the lengths of the third positioning seats 902 and the fourth positioning seats 903 on the second stripper block 9 between the first disk 2 and the second disk 3 on the second connecting rod 11 are the same; among the two second stripper blocks 9 between the second disk 3 and the third disk 4, the length of the first positioning seat 602 of the second stripper block 9 close to the second disk 3 is greater than the length of the second positioning seat 603, and the length of the first positioning seat 602 of the second stripper block 9 close to the third disk 4 is less than the length of the second positioning seat 603; the lengths of the third positioning seats 902 and the fourth positioning seats 903 on the second stripper block 9 between the third disk 4 and the fourth disk 5 are the same, so that the connection between the second stripper block 9 and the corresponding disk is realized through the third positioning seat 902 and the fourth positioning seat 903.

[0049] Optionally, as Figure 1 shown, the drum device provided by the present utility model further includes a connecting member 12, and both the first positioning seat 602 and the second positioning seat 603 are connected to the positioning assembly through the connecting member 12.

[0050] The connecting member 12 in the present application is a bolt and a nut, and through the cooperation of the bolt and the nut, the connection and locking between the connecting seat and the disk can be realized.

[0051] Preferably, both the first connecting rod 8 and the second connecting rod 11 in the present application are cylindrical structures, so that the weight of the overall structure can be reduced to a certain extent.

[0052] In addition, the present utility model also provides a harvester, including the above-mentioned drum device.

[0053] For the harvester adopting the drum device provided by the present application, in the threshing stage, it not only has the advantage of complete threshing of the bar-tooth drum, but also can achieve a certain degree of threshing effect of the rasp-bar drum. Moreover, through the mutual cooperation between the bar teeth and the stripper blocks, it is neither necessary for the drum to have a high rotational speed to meet the operation requirements of the bar teeth, nor is it necessary to set a small gap to meet the operation requirements of the stripper blocks. Therefore, it can not only avoid the breakage of grains, but also reduce the energy consumption of the overall equipment operation.

[0054] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A roller device, characterized in that: It includes a positioning assembly, a first threaded rod assembly, a second threaded rod assembly and a driving shaft; The positioning assembly is connected to the driving shaft, and a positioning portion is formed along the circumference of the positioning assembly. The first threaded rod assembly includes a plurality of first threaded rod blocks, a plurality of first rod teeth, and a plurality of first connecting rods. The first threaded rod blocks and the first rod teeth are alternately arranged along the axial direction of the first connecting rod, and the plurality of first connecting rods are all connected to the positioning portion. The second grooved rod assembly includes a plurality of second grooved rod blocks, a plurality of second rod teeth and a plurality of second connecting rods. The second grooved rod blocks and the second rod teeth are alternately arranged along the axial direction of the second connecting rod. The plurality of second connecting rods are all connected to the positioning portion, and the plurality of first connecting rods and the plurality of second connecting rods are alternately and evenly distributed along the circumference of the positioning assembly.

2. The roller device according to claim 1, characterized in that: The first bar block is formed with a first pattern, and the second bar block is formed with a second pattern. The first pattern is evenly distributed along the axial direction of the first bar block, and the second pattern is evenly distributed along the axial direction of the second bar block. The first pattern and the second pattern are in opposite directions.

3. The roller device according to claim 1, characterized in that: The first threaded rod blocks on the adjacent first connecting rod and the second connecting rod are arranged corresponding to the second rod teeth, and the first rod teeth are arranged corresponding to the second threaded rod blocks.

4. The roller device according to claim 1, characterized in that: The positioning assembly comprises a first disc, a second disc, a third disc and a fourth disc which are arranged at equal intervals along the axial direction of the driving shaft; The first disc, the second disc, the third disc and the fourth disc are all formed with the positioning parts, and the positioning parts on the first disc, the second disc, the third disc and the fourth disc are arranged one by one.

5. The drum device according to claim 4, characterized in that: A first positioning seat and a second positioning seat are formed on each of the plurality of first thread rod blocks, and the first positioning seat and the second positioning seat are arranged at two ends of the first thread rod block opposite to each other; A third positioning seat and a fourth positioning seat are formed on each of the plurality of second thread rod blocks, and the third positioning seat and the fourth positioning seat are formed at two ends of the second thread rod block; The first connecting rod passes through the first positioning seat and the second positioning seat and is fixedly connected to the first positioning seat and the second positioning seat. The second connecting rod passes through the third positioning seat and the fourth positioning seat and is fixedly connected to the third positioning seat and the fourth positioning seat.

6. The drum device according to claim 5, characterized in that: Among the two first threaded rod blocks on the first connecting rod located between the first web and the second web, the length of the first positioning seat on the first threaded rod block close to the first web is greater than the length of the second positioning seat, and the length of the first positioning seat on the first threaded rod block close to the second web is less than the length of the second positioning seat; The first positioning seat and the second positioning seat of the first thread rod block located between the second plate and the third plate have the same size; Of the two first thread rod blocks located between the third disc and the fourth disc, the length of the first positioning seat of the first thread rod block close to the third disc is greater than the length of the second positioning seat, and the length of the first positioning seat on the first thread rod block close to the fourth disc is less than the length of the second positioning seat.

7. The drum device according to claim 5, characterized in that: The third positioning seat and the fourth positioning seat on the second thread rod block located between the first web and the second web on the second connecting rod are of the same length; Among the two second thread rod blocks located between the second web and the third web, the length of the first positioning seat of the second thread rod block close to the second web is greater than the length of the second positioning seat, and the length of the first positioning seat of the second thread rod block close to the third web is less than the length of the second positioning seat; The third positioning seat and the fourth positioning seat on the second thread rod block located between the third disc and the fourth disc have the same length.

8. The drum device according to claim 5, characterized in that: It also includes a connecting piece, and the first positioning seat and the second positioning seat are both connected to the positioning assembly through the connecting piece.

9. The drum device according to claim 1, characterized in that: The first connecting rod and the second connecting rod are both cylindrical structures.

10. A harvester, characterized in that: A roller device comprising any one of claims 1 to 9.

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