Transmission device and harvester

Abstract

The utility model provides a transmission device and a harvester, relates to the technical field of agricultural machinery, and aims to optimize the structure of the transmission device to a certain extent, reduce the production and maintenance cost and simultaneously reduce the failure rate of device operation. The utility model provides a transmission device which comprises a frame body, an output component, a first transmission mechanism, a connecting assembly, a second transmission mechanism and an input component. The first transmission mechanism and the second transmission mechanism are both arranged on the frame body, the input end of the first transmission mechanism is in transmission connection with the output component, the output end of the first transmission mechanism is connected with one end of the connecting assembly, and the other end of the connecting assembly is connected with the input end of the second transmission mechanism. And the output end of the second transmission mechanism is connected with the input component.

Description

Technical Field

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

[0002] With the continuous development and advancement of technology, agricultural harvesters can now complete harvesting and threshing in one go and finally concentrate the grains in a storage space, greatly reducing manual labor and improving agricultural operation efficiency.

[0003] Existing harvesters all include a chopper, which can chop the straw during the harvesting process and finally spray it on the ground to achieve the function of moisture conservation and heat preservation. However, the transmission structure of the existing chopper is complex, requiring a large number of transmission wheels, conveyor belts and other shafts to achieve power transmission, which not only greatly increases the production cost, but also, due to the harsh agricultural harvesting environment, the complex structure is prone to failure and is not conducive to maintenance after failure.

[0004] Therefore, it is urgent to provide a transmission device and a harvester to solve the problems existing in the prior art to a certain extent. Utility Model Content

[0005] The purpose of the utility model is to provide a transmission device and a harvester, so as to optimize the structure of the transmission device to a certain extent, reduce the production and maintenance costs, and reduce the failure rate of the device operation.

[0006] The utility model provides a transmission device, including a frame, an output member, a first transmission mechanism, a connecting assembly, a second transmission mechanism and an input member; the first transmission mechanism and the second transmission mechanism are both arranged on the frame, the input end of the first transmission mechanism is transmission-connected with the output member, the output end of the first transmission mechanism is connected with one end of the connecting assembly, the other end of the connecting assembly is connected with the input end of the second transmission mechanism, and the output end of the second transmission mechanism is connected with the input member.

[0007] Among them, the second transmission mechanism includes a first transmission wheel, a second transmission wheel, a first conveyor belt and an output shaft; the first transmission wheel is connected to an end of the connecting component away from the first transmission mechanism, the first transmission wheel is connected to the second transmission wheel through the first conveyor belt, the second transmission wheel is connected to one end of the output shaft, and the other end of the output shaft is connected to the input member.

[0008] Specifically, the first transmission mechanism includes a second conveyor belt, a third transmission wheel, a fourth transmission wheel, a third conveyor belt and a fifth transmission wheel, and the connecting assembly includes a first transmission shaft and a second transmission shaft; the second conveyor belt is connected to the output member and the first transmission wheel to transmit power to the third transmission wheel, a first transmission shaft is connected between the third transmission wheel and the fourth transmission wheel, the fourth transmission wheel and the fifth transmission wheel are connected through the third conveyor belt, and the fifth transmission wheel is connected to the first transmission wheel through the second transmission shaft.

[0009] Specifically, the transmission device provided by the utility model further includes an output transmission shaft, the first transmission mechanism further includes a fourth conveyor belt, and the fifth transmission wheel is connected to the output transmission shaft through the fourth conveyor belt.

[0010] Among them, the first transmission mechanism includes a third transmission wheel, a fourth transmission wheel, a fifth transmission wheel, a second conveyor belt and a third conveyor belt, and the connecting component includes a first transmission shaft; the third transmission wheel is combined with the first transmission wheel, the output member is connected to the third transmission wheel through the second conveyor belt, the third transmission wheel is connected to the fourth transmission wheel through the first transmission shaft, and the fourth transmission wheel is connected to the fifth transmission wheel through the third conveyor belt.

[0011] Specifically, the frame body includes a main frame, a first mounting plate and a second mounting plate; the first mounting plate and the second mounting plate are relatively arranged at two ends of the main frame, and the input component is connected to the first mounting plate or the second mounting plate.

[0012] Specifically, a first positioning seat and a second positioning seat are provided on the frame body, and the first positioning seat and the second positioning seat are relatively arranged on both sides of the frame body, and the two ends of the first transmission shaft are respectively rotatably connected to the first positioning seat and the second positioning seat, and the two ends of the first transmission shaft respectively pass through the first positioning seat and the second positioning seat to be connected to the third transmission wheel and the fourth transmission wheel.

[0013] Furthermore, the first positioning seat and the second positioning seat are detachably connected to the frame.

[0014] Furthermore, the input member is a drum transmission box.

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

[0016] The transmission device provided by the utility model comprises a frame, an output member, a first transmission mechanism, a connecting assembly, a second transmission mechanism and an input member; the first transmission mechanism and the second transmission mechanism are both arranged on the frame, the input end of the first transmission mechanism is transmission-connected with the output member, the output end of the first transmission mechanism is connected with one end of the connecting assembly, the other end of the connecting assembly is connected with the input end of the second transmission mechanism, and the output end of the second transmission mechanism is connected with the input member.

[0017] From this analysis, it can be seen that the frame can provide a stable installation space for the first transmission mechanism and the second transmission mechanism, and the two ends of the connecting assembly are respectively connected to the first transmission mechanism and the second transmission mechanism, so that power transmission can be achieved. Accordingly, the present application connects the first transmission mechanism with the output member, thereby obtaining the output power of the output member, and transmits the power to the second transmission mechanism through the connecting assembly.

[0018] Since the output end of the second transmission mechanism in the present application is connected to the input member, when the second transmission mechanism obtains power, it can transfer the power to the input member again to complete the power transmission.

[0019] Since the first transmission mechanism and the second transmission mechanism in the transmission device provided by the present application realize power transmission through a connecting assembly, and the structures contained in the first transmission mechanism and the second transmission mechanism themselves do not cause mutual interference or connection problems, the transmission structure is not only simple but also more independent. Even if one of the structural parts fails, it will not cause failures of other structural parts. This can reduce production costs and maintenance costs, as well as failure rates and maintenance difficulties, and is more suitable for agricultural working environments.

[0020] In addition, the utility model also provides a harvester, comprising a chopping device and the above-mentioned transmission device; the first transmission mechanism of the transmission device is connected to the output transmission shaft of the chopping device.

[0021] The transmission device provided in the present application is mainly combined with the chopping device in the harvester, so that the power transmission structure of the chopping device can be made clearer and simpler, the failure rate is greatly reduced, and later inspection and maintenance are facilitated. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A schematic diagram of the structure of a first installation method of a transmission device provided in an embodiment of the utility model;

[0024] Figure 2 A connection diagram of a first installation method of a transmission device provided in an embodiment of the utility model;

[0025] Figure 3 A schematic diagram of the structure of a second installation method of a transmission device provided in an embodiment of the utility model;

[0026] Figure 4 A schematic diagram of a second installation method of a transmission device provided in an embodiment of the utility model;

[0027] Figure 5 A schematic diagram of the structure of a third installation method of the transmission device provided in an embodiment of the utility model;

[0028] Figure 6 A schematic diagram of a third installation method of a transmission device provided in an embodiment of the utility model;

[0029] Figure 7 A schematic diagram of the structure of a fourth installation method of the transmission device provided in an embodiment of the utility model;

[0030] Figure 8 A connection diagram of a fourth installation method of the transmission device provided in an embodiment of the utility model.

[0031] In the figure: 1-frame; 101-main frame; 102-first mounting plate; 103-second mounting plate; 104-first positioning seat; 105-second positioning seat; 2-output component; 3-first transmission shaft; 4-first transmission wheel; 5-second transmission wheel; 6-third transmission wheel; 7-fourth transmission wheel; 8-first conveyor belt; 9-second conveyor belt; 10-third conveyor belt; 11-fifth transmission wheel; 12-second transmission shaft; 13-output transmission shaft; 14-input component; 15-fourth conveyor belt; 16-output shaft. DETAILED DESCRIPTION

[0032] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application generally described and shown in the 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 drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0033] In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or are the positions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0034] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0035] In the description of the embodiments of the present application, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting", "installation", "connection", and "connection" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0036] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items.

[0037] For ease of description, spatial relative terms such as "above", "upper", "below", and "lower" may be used herein to describe the relationship of one element to another element as shown in the drawings. Such spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the drawings.

[0038] The terms used herein are only used to describe various examples and are not used to limit the present disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms "include", "comprise" and "have" list the stated features, quantities, operations, components, elements and / or their combinations that exist, but do not exclude the existence or addition of one or more other features, quantities, operations, components, elements and / or their combinations.

[0039] Variations in the shapes shown in the drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings but include variations in shapes that occur during manufacturing.

[0040] The features of the examples described herein may 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. In addition, the technical solutions between the various embodiments may be combined with each other, but must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be considered that the combination of such technical solutions does not exist and is not within the scope of protection required by the present application.

[0041] like Figure 1-Figure 8 As shown, the utility model provides a transmission device, including a frame 1, an output member 2, a first transmission mechanism, a connecting assembly, a second transmission mechanism and an input member 14; the first transmission mechanism and the second transmission mechanism are both arranged on the frame 1, the input end of the first transmission mechanism is transmission-connected to the output member 2, the output end of the first transmission mechanism is connected to one end of the connecting assembly, the other end of the connecting assembly is connected to the input end of the second transmission mechanism, and the output end of the second transmission mechanism is connected to the input member 14.

[0042] Compared with the prior art, the transmission device provided by the utility model has the following advantages:

[0043] The transmission device provided by the utility model can provide a stable installation space for the first transmission mechanism and the second transmission mechanism through the frame 1, and the two ends of the connecting assembly are respectively connected to the first transmission mechanism and the second transmission mechanism, so as to realize the transmission of power. Accordingly, the application can obtain the output power of the output member 2 by connecting the first transmission mechanism with the output member 2, and transmit the power to the second transmission mechanism through the connecting assembly.

[0044] Since the output end of the second transmission mechanism in the present application is connected to the input member 14 , when the second transmission mechanism obtains power, it can transfer the power to the input member 14 again to complete the power transmission.

[0045] Since the first transmission mechanism and the second transmission mechanism in the transmission device provided by the present application realize power transmission through a connecting assembly, and the structures contained in the first transmission mechanism and the second transmission mechanism themselves do not cause mutual interference or connection problems, the transmission structure is not only simple but also more independent. Even if one of the structural parts fails, it will not cause failures of other structural parts. This can reduce production costs and maintenance costs, as well as failure rates and maintenance difficulties, and is more suitable for agricultural working environments.

[0046] Alternatively, if Figure 1-Figure 8 As shown, the second transmission mechanism in the present application includes a first transmission wheel 4, a second transmission wheel 5, a first conveyor belt 8 and an output shaft 16; the first transmission wheel 4 is connected to an end of the connecting component away from the first transmission mechanism, the first transmission wheel 4 is connected to the second transmission wheel 5 through the first conveyor belt 8, the second transmission wheel 5 is connected to one end of the output shaft 16, and the other end of the output shaft 16 is connected to the input member 14.

[0047] It should be additionally explained here that the input component 14 in the present application is a drum transmission box.

[0048] The first transmission wheel 4 can be connected to the first transmission mechanism through the connecting assembly. Since the output member 2 is connected to the first transmission mechanism, when the output member 2 is started, power can be transmitted from the first transmission mechanism to the first transmission wheel 4 through the connecting assembly.

[0049] After the power is transmitted to the first transmission wheel 4, the second transmission wheel 5 can be driven to transmit through the first conveyor belt 8. Since the second transmission wheel 5 is connected to the input component 14 through the output shaft 16, the power can be finally transmitted to the input component 14 to complete the power transmission.

[0050] Based on the above structure, the present application provides a first implementation of the first transmission mechanism, such as Figure 1 Combination Figure 2As shown, in this manner, the first transmission mechanism includes a second transmission belt 9, a third transmission wheel 6, a fourth transmission wheel 7, a third transmission belt 10 and a fifth transmission wheel 11, and the connecting assembly includes a first transmission shaft 3 and a second transmission shaft 12; the second transmission belt 9 is connected to the output member 2 and the third transmission wheel 6 to transmit power to the third transmission wheel 6, the first transmission shaft 3 is connected between the third transmission wheel 6 and the fourth transmission wheel 7, the fourth transmission wheel 7 and the fifth transmission wheel 11 are connected through the third transmission belt 10, and the fifth transmission wheel 11 is connected to the first transmission wheel 4 through the second transmission shaft 12.

[0051] In this way, power is provided by the output member 2, transmitted to the third transmission wheel 6 through the second transmission belt 9, and the third transmission wheel 6 is connected to the fourth transmission wheel 7 through the first transmission shaft 3, so that power can be transmitted to the fourth transmission wheel 7. The fourth transmission wheel 7 in the present application is connected to the fifth transmission wheel 11 through the third transmission belt, so that the fifth transmission wheel 11 can be driven to rotate.

[0052] It can be understood that the fifth transmission wheel 11 in the present application is connected to the first transmission wheel 4 through the second transmission shaft 12. Therefore, the power output by the output component 2 can be transmitted to the first transmission wheel 4, and drive the second transmission wheel 5 to rotate through the first conveyor belt 8, and finally input the power into the input component 14.

[0053] Alternatively, if Figure 1-Figure 8 As shown, the transmission device provided by the utility model further includes an output transmission shaft 13 , the first transmission mechanism further includes a fourth conveyor belt 15 , and the fifth transmission wheel 11 is connected to the output transmission shaft 13 via the fourth conveyor belt 15 .

[0054] The output drive shaft 13 in the present application is the drive shaft of the harvester's shredding device. It can be understood that the fifth transmission wheel 11 in the present application is connected to the output drive shaft 13 through the fourth conveyor belt 15, which means that the fifth transmission wheel 11 transmits power to the output drive shaft 13 through the fourth conveyor belt 15. In actual application, the output drive shaft 13 can also be connected to an output wheel, so as to cooperate with the conveyor belt to realize power transmission.

[0055] The second implementation of the first transmission mechanism in this application is as follows: Figure 2 Combination Figure 3 As shown, in this embodiment, the first transmission mechanism includes a third transmission wheel 6, a fourth transmission wheel 7, a fifth transmission wheel 11, a second conveyor belt 9 and a third conveyor belt 10, and the connecting assembly includes a first transmission shaft 3; the third transmission wheel 6 is combined with the first transmission wheel 4, the output member 2 is connected to the third transmission wheel 6 through the second conveyor belt 9, the third transmission wheel 6 is connected to the fourth transmission wheel 7 through the first transmission shaft 3, and the fourth transmission wheel 7 is connected to the fifth transmission wheel 11 through the third conveyor belt 10.

[0056] In this method, the difference from the first method is that the third transmission wheel 6 can be combined with the first transmission wheel 4, and the combination can be achieved by welding the two wheels or directly manufacturing two wheel parts and cooperating with the corresponding first conveyor belt 8 and second conveyor belt 9 to achieve power transmission.

[0057] It can be understood that in this way, the power transmitted by the output component 2 can directly drive the first transmission wheel 4 and the third transmission wheel 6, so that the power can be transmitted to the input component 14 through the first transmission wheel 4, the second transmission wheel 5 and the first conveyor belt 8, and the power can be transmitted to the output transmission shaft 13 through the fourth transmission wheel 7, the fifth transmission wheel 11, the third conveyor belt 10 and the fourth conveyor belt 15, thereby realizing the straw chopping operation.

[0058] Furthermore, in this embodiment, the second transmission wheel 5 is arranged at the opposite position to the first embodiment, that is, Figure 1 Based on the center coordinate, in the first embodiment, the second transmission wheel 5 is located at the rear of the frame 1, while in this embodiment, the second transmission wheel 5 is located in front of the frame 1. Accordingly, in the first embodiment, the input component 14 is located at the rear of the frame 1, while in this embodiment, it is located in front of the frame 1.

[0059] It is necessary to add that, if Figure 5 Combination Figure 6 As shown, the third embodiment that the present application can provide is that the third transmission wheel 6 is combined with the fourth transmission wheel 7, and the combination of the third transmission wheel 6 and the fourth transmission wheel 7 can be achieved by welding the two wheels or directly forming a transmission wheel with two wheel parts.

[0060] In this manner, the output member 2 (not shown in the figure) is also connected to the third transmission wheel 6 through the conveyor belt, and since the third transmission wheel 6 is combined with the fourth transmission wheel 7, the output member 2 can synchronously drive the third transmission wheel 6 and the fourth transmission wheel 7. Accordingly, the function of transmitting power to the first transmission wheel 4 is realized through the first connecting shaft, and the function of transmitting power to the fifth transmission wheel 11 is realized through the third conveyor belt 10, and finally the rotation of the output transmission shaft 13 is realized.

[0061] like Figure 7 Combination Figure 8 As shown, the fourth embodiment that can be provided by the present application is different from the third embodiment in that the former sets the input component 14 in front of the frame 1, and the required power of the input component 14 is input from the right side of the frame 1, while the fourth embodiment sets the input component 14 at the rear of the frame 1, and the required power of the input component 14 is input from the right side of the frame 1.

[0062] Alternatively, if Figure 1-Figure 8As shown, the frame 1 in the present application includes a main frame 101, a first mounting plate 102 and a second mounting plate 103; the first mounting plate 102 and the second mounting plate 103 are relatively arranged at two ends of the main frame 101, and the input component 14 is connected to the first mounting plate 102 or the second mounting plate 103.

[0063] The present application is based on the two ends of the main frame 101. Figure 1 The first mounting plate 102 and the second mounting plate 103 are located at the front and rear ends of the main frame 101, so that the input member 14 can be installed according to specific needs through the first mounting plate 102 and the second mounting plate 103, that is, in this application Figure 1 and Figure 7 In the embodiment shown in FIG. 1 , the input member 14 is located at the rear end of the frame 1 , and Figure 3 and Figure 5 In the embodiment shown, the input member 14 is located at the front end of the frame 1. Therefore, by providing the first mounting plate 102 and the second mounting plate 103, the input member 14 can be arranged more flexibly, and accordingly, the second transmission mechanism connected to the input member 14 can also be arranged on the left or right side of the frame 1.

[0064] It is understandable that if Figure 1-Figure 8 As shown, the basis for the present application to realize that the second transmission mechanism is arranged on the left and right sides of the frame 1 is that the frame 1 in the present application is provided with a first positioning seat 104 and a second positioning seat 105, the first positioning seat 104 and the second positioning seat 105 are relatively arranged on both sides of the frame 1, and the two ends of the first transmission shaft 3 are respectively rotatably connected to the first positioning seat 104 and the second positioning seat 105, and the two ends of the first transmission shaft 3 respectively pass through the first positioning seat 104 and the second positioning seat 105 to be connected with the third transmission wheel 6 and the fourth transmission wheel 7.

[0065] Optionally, the first positioning seat 104 and the second positioning seat 105 in the present application are detachably connected to the frame 1, and the first positioning seat 104 and the second positioning seat 105 are both provided with through holes, bearings are provided in the through holes, the outer rings of the bearings are fixedly connected to the first positioning seat 104 and the second positioning seat 105, and the two ends of the first transmission shaft 3 are respectively fixedly connected to the inner rings of the bearings.

[0066] By making the first positioning seat 104 and the second positioning seat 105 detachably connected to the frame 1, the distance between the first transmission mechanism and the output transmission shaft 13 and the distance between the second transmission mechanism and the input member 14 can be adjusted according to specific needs, so that the setting of the overall device can be more flexible and meet specific installation requirements.

[0067] Correspondingly, by providing the bearings, the first transmission shaft 3 can stably rotate relative to the first positioning seat 104 and the second positioning seat 105, thereby achieving stable transmission of power.

[0068] In addition, the utility model also provides a harvester, including a chopping device and the above-mentioned transmission device; the first transmission mechanism of the transmission device is connected to the output transmission shaft 13 of the chopping device.

[0069] The transmission device provided in the present application is mainly combined with the chopping device in the harvester, so that the power transmission structure of the chopping device can be made clearer and simpler, the failure rate is greatly reduced, and later inspection and maintenance are facilitated.

[0070] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A transmission device, characterized in that: It includes a frame, an output member, a first transmission mechanism, a connecting assembly, a second transmission mechanism and an input member; The first transmission mechanism and the second transmission mechanism are both arranged on the frame, the input end of the first transmission mechanism is transmission-connected to the output member, the output end of the first transmission mechanism is connected to one end of the connecting component, the other end of the connecting component is connected to the input end of the second transmission mechanism, and the output end of the second transmission mechanism is connected to the input member.

2. The transmission device according to claim 1, characterized in that: The second transmission mechanism includes a first transmission wheel, a second transmission wheel, a first conveyor belt and an output shaft; The first transmission wheel is connected to one end of the connecting assembly away from the first transmission mechanism, the first transmission wheel is connected to the second transmission wheel through the first conveyor belt, the second transmission wheel is connected to one end of the output shaft, and the other end of the output shaft is connected to the input member.

3. The transmission device according to claim 2, characterized in that: The first transmission mechanism includes a second transmission belt, a third transmission wheel, a fourth transmission wheel, a third transmission belt and a fifth transmission wheel, and the connecting assembly includes a first transmission shaft and a second transmission shaft; The second conveyor belt is connected to the output member and the first transmission wheel to transmit power to the third transmission wheel. A first transmission shaft is connected between the third transmission wheel and the fourth transmission wheel. The fourth transmission wheel is connected to the fifth transmission wheel through the third conveyor belt, and the fifth transmission wheel is connected to the first transmission wheel through the second transmission shaft.

4. The transmission device according to claim 3, characterized in that: It also includes an output transmission shaft, and the first transmission mechanism also includes a fourth conveyor belt, and the fifth transmission wheel is connected to the output transmission shaft through the fourth conveyor belt.

5. The transmission device according to claim 2, characterized in that: The first transmission mechanism includes a third transmission wheel, a fourth transmission wheel, a fifth transmission wheel, a second conveyor belt and a third conveyor belt, and the connecting assembly includes a first transmission shaft; The third transmission wheel is combined with the first transmission wheel, the output member is connected to the third transmission wheel through the second conveyor belt, the third transmission wheel is connected to the fourth transmission wheel through the first transmission shaft, and the fourth transmission wheel is connected to the fifth transmission wheel through the third conveyor belt.

6. The transmission device according to claim 1, characterized in that: The frame body comprises a main frame, a first mounting plate and a second mounting plate; The first mounting plate and the second mounting plate are arranged oppositely at two ends of the main frame, and the input component is connected to the first mounting plate or the second mounting plate.

7. The transmission device according to claim 3, characterized in that: The frame body is provided with a first positioning seat and a second positioning seat, the first positioning seat and the second positioning seat are relatively arranged on both sides of the frame body, the two ends of the first transmission shaft are respectively rotatably connected to the first positioning seat and the second positioning seat, and the two ends of the first transmission shaft respectively pass through the first positioning seat and the second positioning seat to be connected to the third transmission wheel and the fourth transmission wheel.

8. The transmission device according to claim 7, characterized in that: The first positioning seat and the second positioning seat are detachably connected to the frame.

9. The transmission device according to claim 1, characterized in that: The input member is a drum transmission box.

10. A harvester, characterized in that: A device comprising a chopping device and a transmission device as described in any one of claims 1 to 9; The first transmission mechanism of the transmission device is connected to the output transmission shaft of the chopping device.

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