Header and harvester

Abstract

The utility model relates to the technical field of agricultural machinery, in particular to a header and a harvester, the header comprises a rack, a transmission mechanism arranged on the rack, a plurality of ear picking devices arranged on the rack and a plurality of dead knives, the dead knives are arranged on the ear picking devices in a one-to-one correspondence mode, the input end of the transmission mechanism is used for being connected with a power source, and the output end of the transmission mechanism is used for being connected with the power source. The transmission mechanism is in transmission connection with the ear picking devices, and the ear picking devices are in transmission connection with the corresponding dead knives. In the header, the transmission mechanism only needs to be in direct transmission connection with the ear picking device, the dead knife is indirectly driven by the ear picking device, compared with a transmission mechanism of an existing header, a second power transmission shaft does not need to be arranged, the structure of the transmission mechanism can be effectively simplified, cost is reduced, and maintenance is convenient.

Description

Technical Field

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

[0002] Harvesters are agricultural machinery that mechanically completes multiple operations of crop ears, stacking, and returning the stems to the field at one time when the crops are mature. Taking a corn harvester as an example, a number of ear picking devices are set at the front end of the cutting table of the corn harvester. The ear picking devices include a stem pulling roller structure and a straw chain structure. The ear picking devices separate the corn ears from the stems, and the ears enter the auger backwards. The auger transports the ears to the bridge device at the rear. A bottom knife is set under the ear picking device to chop the stems so that the stems can be returned to the field.

[0003] In addition, the harvesting table is also provided with a transmission mechanism, which is used to drive the auger, each ear picking device, and each bed knife. The transmission mechanism provided in the prior art, such as the one disclosed in the corn machine ear picking device in the previous patent with application number 202121486024.4, directly drives each bed knife through a first power transmission shaft connected to the power source, and directly drives each ear picking device through a second power transmission shaft, and the first power transmission shaft and the second power transmission shaft are transmission-connected; in this transmission mechanism, the bed knife needs to be separately configured with a first power transmission shaft for driving, and the harvesting table is usually configured with several ear picking devices and several bed knives, which results in the need to configure several first power transmission shafts, the number of parts is large and the cost is high; in addition, since the first power transmission shaft also needs to be transmission-connected to the second power transmission shaft, this will also cause the structure of the second power transmission shaft to be complex and inconvenient to maintain. Utility Model Content

[0004] The utility model aims to provide a cutting platform and a harvester, so as to simplify the structure of a transmission mechanism, reduce costs, and facilitate maintenance.

[0005] On the one hand, the utility model provides a harvesting platform, which includes a frame, a transmission mechanism arranged on the frame, a plurality of ear picking devices arranged on the frame, and a plurality of bottom knives, wherein the plurality of bottom knives are arranged one-to-one in the plurality of ear picking devices, an input end of the transmission mechanism is used to connect to a power source, the transmission mechanism is transmission-connected to each of the ear picking devices, and the ear picking devices are transmission-connected to the corresponding bottom knives.

[0006] As an optimal technical solution for the harvesting platform, the transmission mechanism includes two transmission components relatively arranged on the left and right sides of the frame, the input ends of the two transmission components are used to connect to the power source, one transmission component is transmission connected to a part of the ear picking device, and the other transmission component is transmission connected to another part of the ear picking device.

[0007] As an optimal technical solution for the harvesting table, the transmission assembly includes a power input shaft, a power output shaft, a plurality of transmission gear boxes and a plurality of couplings. The power input shaft is used for transmission connection with the power source, and the power input shaft is transmission connected with the power output shaft. The plurality of transmission gear boxes are arranged in sequence at intervals along the left-right direction, and any two adjacent transmission gear boxes are connected by the coupling, and each of the transmission gear boxes is transmission connected with one of the ear picking devices; along the left-right direction, the power output shaft is transmission connected with one of the transmission gear boxes located at the left end or the right end.

[0008] As a preferred technical solution of the cutting platform, the cutting platform also includes a conveying auger rotatably arranged on the frame, and the power output shafts of the two transmission assemblies are respectively connected to the two ends of the conveying auger.

[0009] As a preferred technical solution of the cutting platform, the cutting platform further includes two chain transmission assemblies, and the power output shafts of the two transmission assemblies are respectively connected to the two ends of the conveying auger through the two chain transmission assemblies.

[0010] As a preferred technical solution for the harvesting platform, the ear picking device includes a straw chain structure and a stem pulling roller structure, and the transmission gear box is respectively connected to the straw chain structure and the stem pulling roller structure.

[0011] As a preferred technical solution for the harvesting table, the ear picking device also includes a transmission shaft assembly, the stem pulling roller structure is transmission-connected to the transmission shaft assembly, and the transmission shaft assembly is transmission-connected to the corresponding bottom knife.

[0012] As an optimal technical solution for the harvesting platform, the transmission gearbox includes a power transmission shaft and a clutch arranged on the power transmission shaft, the clutch is transmission connected to the stem pulling roller structure through a first gear pair, the clutch is configured to connect or disconnect the power transmission between the power transmission shaft and the first gear pair, and the power transmission shaft is transmission connected to the straw chain structure through a second gear pair.

[0013] As a preferred technical solution of the harvesting platform, the harvesting platform also includes two inverted augers rotatably arranged at the left and right ends of the frame, and the transmission mechanism also includes two hydraulic motors, and the two hydraulic motors are respectively connected to the two inverted augers in a transmission manner.

[0014] The cutting platform provided by the utility model has at least the following beneficial effects:

[0015] The cutting platform includes a frame, a transmission mechanism arranged on the frame, a plurality of ear picking devices arranged on the frame, and a plurality of bed knives, wherein the plurality of bed knives are arranged on the plurality of ear picking devices in a one-to-one correspondence, an input end of the transmission mechanism is used to connect a power source, the transmission mechanism is transmission-connected with each ear picking device, and the ear picking device is transmission-connected with the corresponding bed knives. In the cutting platform, the transmission mechanism only needs to be directly transmission-connected with the ear picking device, and the bed knives are indirectly driven by the ear picking device. Compared with the transmission mechanism of the existing cutting platform, there is no need to set a second power transmission shaft, which can effectively simplify the structure of the transmission mechanism, reduce costs, and facilitate maintenance.

[0016] On the other hand, the utility model provides a harvester, including a traveling vehicle and a cutting table in any of the above schemes, wherein the cutting table is arranged on the traveling vehicle.

[0017] The harvester provided by the utility model has at least the following beneficial effects:

[0018] The harvester comprises a traveling vehicle and the above-mentioned cutting table, wherein the cutting table is arranged on the traveling vehicle. The transmission mechanism of the cutting table of the harvester has a simple structure, low cost and is easy to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the transmission mechanism of the cutting platform in the embodiment of the utility model;

[0020] Figure 2 It is a partial structural schematic diagram of the transmission mechanism of the header in the embodiment of the utility model;

[0021] Figure 3 It is a top view of the local structure of the cutting platform in the embodiment of the utility model;

[0022] Figure 4 A bottom view of a partial structure of a cutting platform in an embodiment of the utility model;

[0023] Figure 5 It is a side view of the local structure of the cutting platform in the embodiment of the utility model;

[0024] Figure 6 for Figure 3 Cross-sectional view along AA direction.

[0025] In the figure:

[0026] 1. Transmission assembly; 11. Power input shaft; 12. Power output shaft; 13. Transmission gearbox; 131. Power transmission shaft; 132. Clutch; 133. First gear pair; 1331. First bevel gear; 1332. Second bevel gear; 134. Second gear pair; 1341. Third bevel gear; 1342. Fourth bevel gear; 14. Coupling; 15. First gearbox; 16. Universal coupling; 17. Second gearbox;

[0027] 2. Ear picking device; 21. Stalk pulling roller structure; 211. Stalk pulling roller; 212. Output gear; 213. Feeding space; 22. Grain pulling chain structure; 221. Driving sprocket; 222. Tensioning sprocket; 223. Grain pulling chain; 23. Idle wheel; 24. Transmission shaft assembly; 241. Input gear; 242. Retractable shaft; 243. Conical gear pair;

[0028] 3. Bottom knife;

[0029] 4. Conveying auger;

[0030] 5. Chain drive assembly; 51. First sprocket; 52. Second sprocket; 53. Chain;

[0031] 6. Falling auger;

[0032] 7. Hydraulic motor. DETAILED DESCRIPTION

[0033] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and 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 cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "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 communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0037] This embodiment also provides a harvester, including a traveling vehicle (not shown in the drawings) and a cutting table, the cutting table is arranged on the traveling vehicle, the traveling vehicle is used to drive the cutting table to move, and the cutting table is used to harvest crops. Specifically, the harvester in this embodiment is used to harvest corn, specifically a corn harvester; in other embodiments, the harvester can also be a sorghum harvester for harvesting sorghum, or a harvester for harvesting other crops.

[0038] like Figures 1 to 3 As shown, the header includes a frame, a transmission mechanism arranged on the frame, a plurality of ear picking devices 2 arranged on the frame, and a plurality of bottom knives 3, wherein the plurality of bottom knives 3 are arranged one by one on the plurality of ear picking devices 2. The transmission mechanism is used to connect a power source, and the transmission mechanism is used to directly or indirectly drive the plurality of ear picking devices 2 and the plurality of bottom knives 3 to work. The ear picking device 2 is used to separate the ears and stalks of corn, and the bottom knives 3 are used to chop the stalks so that the stalks can be returned to the field.

[0039] The transmission mechanism of the existing cutting table directly drives each bed knife through a first power transmission shaft connected to the power source, and directly drives each ear picking device through a second power transmission shaft, and the first power transmission shaft and the second power transmission shaft are transmission connected; in this transmission mechanism, the bed knife needs to be separately configured with a first power transmission shaft for driving, and the cutting table is usually configured with several ear picking devices and several bed knives, which leads to the need to configure several first power transmission shafts, the number of parts is large and the cost is high; in addition, since the first power transmission shaft also needs to be transmission connected to the second power transmission shaft, this will also cause the second power transmission shaft to have a complex structure and inconvenient maintenance.

[0040] In this regard, in this embodiment, the input end of the transmission mechanism is used to connect the power source, the transmission mechanism is transmission-connected to each ear picking device 2, and the ear picking device 2 is transmission-connected to the corresponding bed knife 3. In this arrangement, the transmission mechanism only needs to be directly transmission-connected to the ear picking device 2, and the bed knife 3 is indirectly driven by the ear picking device 2. Compared with the transmission mechanism of the existing header, there is no need to set a second power transmission shaft, which can effectively simplify the structure of the transmission mechanism, reduce costs, and facilitate maintenance.

[0041] Optionally, see Figure 1 The transmission mechanism includes two transmission components 1 arranged on the left and right sides of the frame, the input ends of the two transmission components 1 are used to connect to the power source, one transmission component 1 is connected to a part of the ear picking device 2, and the other transmission component 1 is connected to another part of the ear picking device 2. Such an arrangement is convenient for reducing the transmission load of a single transmission component 1. Of course, in other embodiments, one transmission component 1 can also be connected to each ear picking device 2 through a transmission connection.

[0042] like Figure 1 and Figure 2 As shown, in this embodiment, the transmission assembly 1 includes a power input shaft 11, a power output shaft 12, a plurality of transmission gear boxes 13 and a plurality of couplings 14. The power input shaft 11 is used for transmission connection with the power source, and the power input shaft 11 is transmission connected with the power output shaft 12. The plurality of transmission gear boxes 13 are arranged in the left and right directions (such as Figure 1 The transmission gear boxes 13 are arranged in sequence (in the direction indicated by the ab arrows in the figure), and any two adjacent transmission gear boxes 13 are connected by a coupling 14, and each transmission gear box 13 is transmission-connected to an ear picking device 2; along the left and right directions, the power output shaft 12 is transmission-connected to a transmission gear box 13 located at the left end or the right end. In this way, the installation positions of the two adjacent transmission gear boxes 13 are not restricted by coaxiality to a certain extent through the coupling 14, which is convenient for installation and maintenance. Among them, the power source can be a motor, an engine or a hydraulic pump.

[0043] Furthermore, the power input shaft 11 is arranged at the rear side of the frame (front and rear direction is as shown in FIG. Figure 1The power output shaft 12 is arranged in front of the power input shaft 11 and also extends in the left-right direction. In this embodiment, the power input shaft 11 and the power output shaft 12 can be connected by transmission through the first gear box 15, the universal coupling 16, and the second gear box 17. Specifically, the power input shaft 11, the first gear box 15, the universal coupling 16, the second gear box 17 and the power output shaft 12 are sequentially connected by transmission. The general installation direction of the universal coupling 16 is perpendicular to the left-right direction and forms a certain angle with the front-back direction. The first gear box 15 and the second gear box 17 can be provided with a bevel gear pair, and both are used to convert the direction of power transmission by 90°, so that the power can be smoothly transmitted from the power input shaft 11 to the power output shaft 12.

[0044] As an alternative solution, the transmission assembly 1 can also adopt a chain transmission assembly, which includes a power main shaft transmission-connected to the power source, and a plurality of gear boxes, the plurality of gear boxes are all transmission-connected to the power main shaft through chains, and the plurality of gear boxes are transmission-connected to a plurality of ear picking devices 2 one by one.

[0045] Optionally, see Figure 1 The header also includes a conveying auger 4 rotatably arranged on the frame, and the power output shafts 12 of the two transmission components 1 are respectively connected to the two ends of the conveying auger 4. In this way, the conveying auger 4 is driven by the two transmission components 1, which can ensure that the conveying auger 4 rotates stably and further simplify the structure of the transmission mechanism.

[0046] Specifically, the header also includes two chain drive assemblies 5, and the power output shafts 12 of the two drive assemblies 1 are respectively connected to the two ends of the conveying auger 4 through the two chain drive assemblies 5. Specifically, the chain drive assembly 5 includes a first sprocket 51 provided on the power output shaft 12, a second sprocket 52 provided on the auger 4, and a chain 53 connecting the first sprocket 51 and the second sprocket 52. Among them, the outer diameter of the first sprocket 51 is smaller than the outer diameter of the second sprocket 52, so as to give the conveying auger 4 a larger torque. In other embodiments, the chain drive assembly 5 can also be replaced by a belt drive assembly or a gear pair as needed.

[0047] Optionally, see Figure 2 and Figure 3The ear picking device 2 includes a straw chain structure 22 and a stem pulling roller structure 21, and the transmission gear box 13 is respectively connected to the straw chain structure 22 and the stem pulling roller structure 21. With such an arrangement, the straw chain structure 22 and the stem pulling roller structure 21 can be driven to work at the same time by the transmission gear box 13. Among them, the ear picking device 2 also includes an ear picking frame (not shown in the drawings), and the stem pulling roller structure 21 includes two stem pulling rollers 211 rotatably arranged on the ear picking frame, and the two stem pulling rollers 211 are spaced and arranged opposite to each other in the left-right direction, and a feeding space 213 is formed between the two stem pulling rollers 211 to facilitate the entry of corn stalks. The straw chain structure 22 includes two straw chain assemblies, which include a driving sprocket 221 rotatably arranged on the box body of the transmission gear box 13, a tensioning sprocket 222 arranged on the ear picking frame, and a straw chain 223 connecting the driving sprocket 221 and the tensioning sprocket 222. The two straw chain assemblies are arranged at intervals in the left-right direction and correspond one-to-one to the two stem pulling rollers 211. The two straw chain assemblies are used to drive crops into the feeding space 213.

[0048] In other embodiments, the transmission gear box 13 may be transmission-connected to one of the reed chain structure 22 and the stem-pulling roller structure 21 , and the transmission gear box 13 and the reed chain structure 22 may be transmission-connected to each other.

[0049] Optionally, see Figures 3 to 5 The ear picking device 2 also includes a transmission shaft assembly 24, the stem pulling roller structure 21 is transmission-connected with the transmission shaft assembly 24, and the transmission shaft assembly 24 is transmission-connected with the corresponding bed knife 3. With such a configuration, the bed knife 3 does not need to be transmission-connected with the transmission gear box 13, which facilitates the simplification of the structure of the transmission gear box 13. Specifically, an idler wheel 23 is also provided on the ear picking frame, an output gear 212 is provided on the stem pulling roller 211, and the transmission shaft assembly 24 includes a telescopic shaft 242, an input gear 241 provided at one end of the telescopic shaft 242, and a bevel gear pair 243, the idler wheel 23 is respectively meshed with the output gear 212 and the input gear 241, and the bevel gear pair 243 is connected between the other end of the telescopic shaft 242 and the bed knife 3, so that power can be transmitted from the stem pulling roller 211 to the bed knife 3. And the telescopic shaft 242 is used to facilitate the adjustment of the installation position of the bed knife 3 along the front-back direction as needed.

[0050] Optionally, see Figure 3 and Figure 4The transmission gearbox 13 includes a power transmission shaft 131 and a clutch 132 arranged on the power transmission shaft 131. The clutch 132 is connected to the stem pulling roller structure 21 through a first gear pair 133. The clutch 132 is configured to connect or disconnect the power transmission between the power transmission shaft 131 and the first gear pair 133. The power transmission shaft 131 is connected to the straw chain structure 22 through a second gear pair 134. The clutch 132 is configured to disconnect the transmission connection between the power transmission shaft 131 and the first gear pair 133 when the torque of the stem pulling roller structure 21 is greater than the set torque; the clutch 132 is configured to connect the power transmission shaft 131 and the first gear pair 133 when the torque of the stem pulling roller structure 21 is greater than the set torque, so that the adverse effects caused by the stuck stem pulling roller structure 21 can be effectively avoided.

[0051] Among them, the clutch 132 includes an inner ring fixedly set on the power transmission shaft 131, an outer ring sleeved on the inner ring, and an elastic pin. The outer ring is connected to the stem pulling roller structure 21 through the first gear pair 133. The elastic pin is fixed to the inner ring, and the elastic pin can be pinned with the outer ring. When the torque of the stem pulling roller structure 21 borne by the outer ring is greater than the set torque, the elastic pin is pressed between the inner ring and the outer ring, so that the outer ring can rotate freely relative to the inner ring to disconnect the transmission connection between the power transmission shaft 131 and the first gear pair 133. When the torque of the stem pulling roller structure 21 borne by the outer ring is not greater than the set torque, the elastic pin is pinned with the outer ring, so that the outer ring can rotate synchronously with the inner ring, and then rotate synchronously with the power transmission shaft 131, so that the clutch 132 connects the power transmission shaft 131 and the first gear pair 133.

[0052] For details, please refer to Figure 6 In this embodiment, the first gear pair 133 includes two first bevel gears 1331 spaced apart on the outer ring, and second bevel gears 1332 respectively disposed on the two stem pulling rollers 211, and the two first bevel gears 1331 are respectively meshed with the two second bevel gears 1332. The second gear pair 134 includes two third bevel gears 1341 spaced apart on the power transmission shaft 131, and fourth bevel gears 1342 respectively coaxially fixedly connected to the two driving sprockets 221, and the two third bevel gears 1341 are respectively meshed with the two fourth bevel gears 1342 in a one-to-one correspondence.

[0053] Optionally, the header also includes two inverted augers 6 rotatably arranged at the left and right ends of the frame; the transmission mechanism also includes two hydraulic motors 7, and the two hydraulic motors 7 are respectively connected to the two inverted augers 6. In this way, the two hydraulic motors 7 can drive the two inverted augers 6 to rotate. The two inverted augers 6 are arranged in a style with a low front end and a high rear end, and the outer diameters of the two inverted augers 6 gradually increase from the front to the back. The inverted augers 6 are used to lift up the inverted corn stalks and transport them to the inside, so that the inverted corn stalks can smoothly enter the feeding space 213 next to them.

[0054] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A harvesting platform, comprising a frame, a transmission mechanism arranged on the frame, a plurality of ear picking devices (2) arranged on the frame, and a plurality of bed knives (3), wherein the plurality of bed knives (3) are arranged one-to-one correspondingly on the plurality of ear picking devices (2), characterized in that: The input end of the transmission mechanism is used to connect to a power source, the transmission mechanism is transmission-connected to each of the ear-picking devices (2), and the ear-picking devices (2) are transmission-connected to the corresponding bed knives (3).

2. The header according to claim 1, characterized in that: The transmission mechanism comprises two transmission components (1) arranged on the left and right sides of the frame, the input ends of the two transmission components (1) are used to connect to a power source, one transmission component (1) is transmission-connected to a part of the ear picking device (2), and the other transmission component (1) is transmission-connected to another part of the ear picking device (2).

3. The header according to claim 2, characterized in that: The transmission assembly (1) comprises a power input shaft (11), a power output shaft (12), a plurality of transmission gear boxes (13) and a plurality of couplings (14); the power input shaft (11) is used for transmission connection with a power source, and the power input shaft (11) is transmission connected with the power output shaft (12); the plurality of transmission gear boxes (13) are arranged in sequence and spaced apart along the left-right direction, and any two adjacent transmission gear boxes (13) are connected through the coupling (14); each transmission gear box (13) is transmission connected with one of the ear picking devices (2); along the left-right direction, the power output shaft (12) is transmission connected with one of the transmission gear boxes (13) located at the left end or the right end.

4. The header according to claim 3, characterized in that: The cutting platform also includes a conveying auger (4) rotatably arranged on the frame, and the power output shafts (12) of the two transmission assemblies (1) are respectively connected to the two ends of the conveying auger (4) in a transmission manner.

5. The header according to claim 4, characterized in that: The cutting platform further comprises two chain transmission assemblies (5), and the power output shafts (12) of the two transmission assemblies (1) are respectively connected to the two ends of the conveying auger (4) through the two chain transmission assemblies (5).

6. The header according to claim 3, characterized in that: The ear picking device (2) comprises a reed chain structure (22) and a stem pulling roller structure (21), and the transmission gear box (13) is respectively connected to the reed chain structure (22) and the stem pulling roller structure (21) in transmission connection.

7. The header according to claim 6, characterized in that: The ear picking device (2) further comprises a transmission shaft assembly (24); the stem pulling roller structure (21) is transmission-connected to the transmission shaft assembly (24); and the transmission shaft assembly (24) is transmission-connected to the corresponding bottom knife (3).

8. The header according to claim 6, characterized in that: The transmission gearbox (13) comprises a power transmission shaft (131) and a clutch (132) arranged on the power transmission shaft (131); the clutch (132) is connected to the stalk pulling roller structure (21) through a first gear pair (133); the clutch (132) is configured to connect or disconnect the power transmission between the power transmission shaft (131) and the first gear pair (133); the power transmission shaft (131) is connected to the straw chain structure (22) through a second gear pair (134).

9. The header according to any one of claims 1 to 8, characterized in that: The cutting platform also includes two inverted augers (6) rotatably arranged at the left and right ends of the frame, and the transmission mechanism also includes two hydraulic motors (7). The two hydraulic motors (7) are respectively connected to the two inverted augers (6) in a transmission manner.

10. A harvester, characterized in that: It comprises a traveling vehicle and a cutting platform as described in any one of claims 1 to 9, wherein the cutting platform is arranged on the traveling vehicle.

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