Hill combine harvester

Abstract

The invention discloses a hill combine harvester, which relates to the technical field of agricultural machinery and comprises a machine body, a walking driving mechanism is arranged below the machine body, and a header, a conveying mechanism and a threshing mechanism are mounted on the machine body; connecting plates are hinged to the two sides of the header, and a spiral conveyor and a reel are rotationally connected to the inner side of the header; the reel comprises a rotating shaft and a reel, the rotating shaft is rotationally connected between the two connecting plates, and a reel adjusting assembly is installed between the connecting plates and the header and used for adjusting the height of the reel; the reel is fixed on the rotating shaft, and a reel tooth of the reel is connected to a reel rod of the reel in a sliding mode through a lantern ring and is fastened through a fastener; a reel adjusting assembly enables a reel to effectively dial crops to a cutting knife, the phenomenon of missing cutting is reduced, a spiral conveyor concentrates the cut crops to the center and then conveys the crops to a conveying mechanism, accumulation and blockage are prevented, the conveying efficiency is improved, and it is ensured that the crops can smoothly enter a threshing mechanism. The device is especially suitable for small-plot and scattered-crop hilly operation.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural machinery, and more particularly to a hill combine harvester. Background Art

[0002] In the field of agricultural harvesting, especially in hilly areas, the performance and adaptability of harvesters are crucial for improving the harvesting efficiency and quality. There are some limitations in the design and function of existing harvesters, mainly reflected in the following aspects:

[0003] The cutting table height of traditional harvesters is fixed and cannot be adjusted according to the undulation of the ground and the height of crops in hilly areas; this results in insufficient fitting degree between the cutting table and the ground during the harvesting process, uneven cutting, and even missed cutting, affecting the harvesting quality and efficiency. For example, in hilly areas, the height of crops may vary due to terrain differences, and the fixed cutting table height cannot adapt to these changes, resulting in some crops not being effectively harvested.

[0004] In addition, the height of the existing reel is fixed and cannot be adjusted according to the height of the crops. In actual operation, the height of the crops varies due to terrain and growth conditions, and the fixed reel height is difficult to adapt to these changes, resulting in poor reeling effect and affecting the harvesting effect.

[0005] Therefore, how to provide a harvester that can effectively adapt to the complex terrain in hilly areas and make real-time adjustments according to different growth conditions of crops is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0006] In view of this, the present invention provides a hill combine harvester, aiming to solve at least one of the above technical problems.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] A hill combine harvester includes a body, a traveling drive mechanism is provided below the body, and a cutting table, a conveying mechanism and a threshing mechanism are installed on the body; both sides of the cutting table are hinged with connecting plates, and a screw conveyor and a reel are rotatably connected to the inner side thereof; the reel includes a rotating shaft and reel wheels, the rotating shaft is rotatably connected between the two connecting plates, and a reel adjusting assembly is installed between the connecting plate and the cutting table for adjusting the height of the reel; the reel wheels are fixed on the rotating shaft, and the teeth of the reel wheels are slidably connected to the reel rods of the reel wheels through collar rings and fastened by fasteners.

[0009] Through the above technical solution, in a hill combine harvester provided by the present invention, the height of the cutting table is adjusted by the cutting table adjustment component to ensure a stable cutting stubble height during harvesting on a hill slope. The height of the cutting table can be automatically adjusted according to the undulation of the hill terrain and the height of the crop, ensuring that the cutting table always maintains an appropriate distance from the ground, improving the uniformity of cutting and the harvesting quality; reducing missed cutting or crop toppling caused by uneven terrain. The reel adjustment component enables the reel to effectively push the crop towards the cutter, reducing missed cutting and improving the harvesting effect. The screw conveyor centralizes the cut crop and transports it to the conveying mechanism, preventing accumulation and blockage, improving the conveying efficiency, and ensuring that the crop can smoothly enter the threshing mechanism; it is especially suitable for hill operations with small plots and scattered crops.

[0010] Preferably, in the above-mentioned hill combine harvester, the reel further includes discs; the number of the discs is two, and the two discs are fixed at both ends of the rotating shaft. The number of the reel rods is multiple, and the multiple reel rods are axially arranged between the two discs; the number of the collars is multiple, and the multiple collars are slidably connected to the reel rods. The reel teeth are fixed on the collars, and the collars and the reel rods are fastened by bolts. By sliding the collars, the position of the reel teeth on the reel rods can be adjusted to adapt to the reel requirements of crops with different heights (such as rice and wheat); ensuring that the crops can be effectively pushed towards the cutter, reducing missed cutting and unharvested crops, and improving the harvesting efficiency and quality.

[0011] Preferably, in the above-mentioned hill combine harvester, the reel adjustment component is a first electric push rod. The number of the first electric push rods is two, and the fixed ends of the two first electric push rods are respectively fixed on the top edges on both sides of the cutting table. The telescopic ends of the first electric push rods are fixedly connected to the connecting plate. The setting of the first electric push rod can realize the automatic adjustment of the height of the reel. This automatic adjustment function can adjust the position of the reel in real time according to the height of the crop, enabling the reel to always effectively push the crop and improving the reel effect; the two first electric push rods on both sides expand and contract synchronously, which can effectively reduce the inclination of the reel and ensure that the reel teeth evenly contact the crop layer.

[0012] Preferably, in the above-mentioned hill combine harvester, it further includes a cutting table adjustment component, and the cutting table adjustment component is installed between the cutting table and the machine body for adjusting the height of the cutting table.

[0013] Preferably, in the above-mentioned hill combine harvester, the cutter bar adjusting assembly is a second electric push rod. The fixed end of the second electric push rod is fixed on the machine body, and the telescopic end of the second electric push rod is fixedly connected to the cutter bar. The electric push rod has a fast response speed and can adjust the height of the cutter bar in real time during travel to adapt to continuous slope changes. Automatically adjusting the height of the cutter bar can ensure that the cutter bar always maintains the best cutting angle with the ground, reducing problems such as uneven cutting and missed cutting caused by inappropriate cutter bar height, thereby improving the harvesting efficiency and quality. Compared with the manual adjustment method, the adjustment of the electric push rod is faster and more accurate, can adapt to the undulations of the hilly terrain in real time, and improves the adaptability and operation convenience of the harvester in complex terrains. Compared with the hydraulic system, the electric push rod has a simple structure and no oil leakage risk, meeting the lightweight requirements of small hill harvesters.

[0014] Preferably, in the above-mentioned hill combine harvester, the conveying mechanism is installed on the machine body. The inlet end of the conveying mechanism corresponds to the screw conveyor, and its outlet end corresponds to the threshing mechanism. The screw conveyor directly guides the crops from the cutter bar into the inlet of the threshing mechanism, reducing the material loss in the intermediate transfer link.

[0015] Preferably, in the above-mentioned hill combine harvester, the threshing mechanism includes a feeding roller and a threshing roller. The feeding roller is rotatably connected to the machine body and is perpendicular to the conveying path of the conveying mechanism. The feeding roller corresponds to the outlet end of the conveying mechanism. The threshing roller is rotatably connected to the machine body and is vertically arranged on one side of the feeding roller away from the conveying mechanism. A concave sieve is fixed on the machine body. The concave sieve is located below the threshing roller and forms a threshing gap with the threshing roller. The feeding roller being perpendicular to the conveying path of the conveying mechanism can effectively prevent material accumulation. The threshing roller being vertically arranged on one side of the feeding roller can ensure that the crops smoothly enter the threshing roller for threshing, improving the threshing efficiency. The concave sieve and the threshing roller form a threshing gap, which helps to separate the grains from the straw, improving the threshing effect and the purity of the grains. At the same time, the gap between the concave sieve and the threshing roller is adjustable to adapt to the threshing requirements of crops with different humidities and varieties, reducing the broken grain rate.

[0016] Preferably, in the above-mentioned hill combine harvester, the number of threshing rollers is two. The two threshing rollers are arranged in parallel. On the outer side wall of each threshing roller, threshing protrusion strips and spike teeth are fixed in a spiral arrangement. The threshing protrusion strips perform rough threshing, and the spike teeth complete fine threshing, reducing the unthreshed rate. The two rollers share the threshing resistance, reducing the power fluctuation caused by the overload of a single roller, and being suitable for the low and uniform speed operation scenario of hilly terrains. The spirally arranged threshing protrusion strips push the crops to move axially, extending the threshing path and improving the threshing uniformity. The spiral arrangement of the spike teeth destroys the straw fiber structure, reducing the straw entanglement on the surface of the roller and maintaining the threshing efficiency.

[0017] Preferably, in the above-mentioned hill combine harvester, a multi-stage vibrating screen is provided below the body and located below the concave sieve. On one side of the multi-stage vibrating screen and close to the conveying mechanism, a blower is installed, and the air duct of the blower corresponds to the multi-stage vibrating screen. The multi-stage vibrating screen can perform multi-stage screening on the grains, further separating the grains and impurities to ensure the purity of the grains; the blower can provide air flow to help separate the light impurities and improve the cleaning effect; the air duct of the blower is targeted at the sieve surface to reduce the energy waste caused by blowing the entire area; through the synergistic effect of the multi-stage vibrating screen and the blower, the grains and impurities can be effectively separated, the purity of the grains can be improved, the mixing of impurities can be reduced, and the cleaning effect of the harvester can be improved.

[0018] Preferably, in the above-mentioned hill combine harvester, a collection tank is provided below the multi-stage vibrating screen. The collection tank conveys the collected grains into the grain collection bin on the body through a transmission mechanism. The grains screened by the multi-stage vibrating screen automatically fall into the collection tank and are sent to the grain collection bin through the transmission mechanism, reducing manual intervention; the transmission mechanism adopts a closed transmission path, effectively reducing the scattering of grains during the conveying process, especially suitable for the bumpy road conditions in hilly areas.

[0019] Preferably, in the above-mentioned hill combine harvester, the walking drive mechanism adopts a crawler-type walking mechanism.

[0020] Through the above technical solutions, compared with the prior art, the present invention discloses a hill combine harvester, which has the following beneficial effects:

[0021] 1. The present invention independently adjusts the cutting table and the reel through electric push rods respectively to achieve the dynamic adaptation of the cutting stubble height and the reel depth, enabling the harvester to adapt to the complex undulating terrain in hilly areas in real time, ensuring that the cutting table always maintains the best distance from the ground, improving the cutting uniformity, reducing the missed cutting phenomenon, significantly enhancing the terrain adaptability of the harvester, and being suitable for hilly areas.

[0022] 2. The threshing mechanism of the present invention adopts a double threshing drum design. Each threshing drum combines threshing convex strips and spike teeth to achieve efficient threshing through rubbing and impact actions, significantly improving the threshing efficiency and the purity of the grains, thereby enhancing the overall harvesting efficiency.

[0023] 3. The multi-stage vibrating screen and the blower below the body of the present invention work together. Through multi-stage screening and air flow separation, the purity of the grains is further improved, and the mixing of impurities is reduced; the design of the collection tank and the transmission mechanism ensures that the grains can be smoothly collected and conveyed to the grain collection bin after cleaning, reducing the grain loss and improving the grain collection quality. Description of the Drawings

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the provided drawings.

[0025] Figure 1 The attached drawing is a schematic structural diagram of the hilly combine harvester provided by the present invention.

[0026] Figure 2 The attached drawing is a schematic structural diagram of the reel provided by the present invention;

[0027] Figure 3 The attached drawing is Figure 2 An enlarged view of cross-section A of the attached drawing;

[0028] Figure 4 The attached drawing is a schematic structural diagram of the threshing mechanism, multi-stage vibrating plates and the fan provided by the present invention

[0029] Wherein:

[0030] 1 - machine body; 11 - concave sieve; 12 - multi-stage vibrating screen; 13 - cab; 14 - mounting frame; 2 - traveling drive mechanism; 3 - cutting table; 31 - connecting plate; 32 - screw conveyor; 33 - reel; 331 - rotating shaft; 332 - reel wheel; 3321 - reel teeth; 3322 - collar; 3323 - reel rod; 3324 - disc; 3325 - bolt; 34 - reciprocating cutter; 4 - conveying mechanism; 5 - threshing mechanism; 51 - feeding roller; 52 - threshing roller; 521 - threshing protrusions; 522 - spike teeth; 6 - reel adjustment assembly; 7 - fan; 8 - collecting trough; 81 - screw conveyor; 9 - grain collecting bin; 10 - discharge chute. Detailed embodiments

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0032] See the attached Figure 1 to the attached Figure 4, an embodiment of the present invention discloses a hill combine harvester, including a machine body 1. A traveling drive mechanism 2 is provided below the machine body 1. A cutting table 3, a conveying mechanism 4, and a threshing mechanism 5 are installed on the machine body 1. Connecting plates 31 are hinged on both sides of the cutting table 3, and a screw conveyor 32 and a reel 33 are rotatably connected to the inner side thereof. The reel 33 includes a rotating shaft 331 and a reel wheel 332. The rotating shaft 331 is rotatably connected between the two connecting plates 31, so that the rotating shaft 331 can rotate relative to the connecting plate 31. A reel adjusting assembly 6 is installed between the connecting plate 31 and the cutting table 3. The reel wheel 332 is fixed on the rotating shaft 331. The teeth 3321 of the reel wheel 332 are slidably connected to the reel rods 3323 of the reel wheel 332 through collar 3322 and fastened by fasteners. When the reel adjusting assembly 6 expands and contracts, the connecting plate 31 drives the reel 33 to lift, thereby adjusting the height of the reel 33.

[0033] To further optimize the above technical solution, the drive mechanism of the rotating shaft 331 is not shown in the figure, and a synchronous belt or other transmission methods can be used to drive the rotating shaft 331.

[0034] To further optimize the above technical solution, the traveling drive mechanism 2 adopts a crawler-type traveling drive mechanism 2.

[0035] To further optimize the above technical solution, the cutting width of the cutting table 3 is 1.8 m, and a reciprocating cutter 34 is equipped. The cutting stroke is 76 mm. The reciprocating cutter 34 can adopt a drive crank connection mechanism to realize the reciprocating motion of the reciprocating cutter, so as to cut the crops.

[0036] To further optimize the above technical solution, the connecting plate 31 is made of a 10-mm-thick steel plate and is hinged to both sides of the cutting table 3, and the hinge points are equipped with self-lubricating bearings.

[0037] To further optimize the above technical solution, the reel wheel 332 further includes discs 3324. The number of discs 3324 is two, and the two discs 3324 are fixed at both ends of the rotating shaft 331. The number of reel rods 3323 is multiple, and multiple reel rods 3323 are circumferentially arranged between the two discs 3324. The number of collars 3322 is multiple, and multiple collars 3322 are slidably connected to the reel rods 3323. The teeth 3321 are fixed on the collars 3322, and the collars 3322 and the reel rods 3323 are fastened by bolts 3325.

[0038] To further optimize the above technical solution, the rotating shaft 331 is connected to the two connecting plates 31 through needle bearings. The reel wheel 332 includes 6 reel rods 3323, which are circumferentially evenly distributed between the two discs 3324. The position of the teeth 3321 is slidably adjusted through the collar 3322. After being fastened by the bolt 3325, a spring washer is added to prevent loosening. The number of the teeth 3321 is determined according to the actual situation.

[0039] To further optimize the above technical solution, the reel adjusting assembly 6 is a first electric push rod. The number of the first electric push rods is two. The fixed ends of the two first electric push rods are respectively fixed on the top edges on both sides of the cutter bar 3, and the telescopic ends of the first electric push rods are fixedly connected to the connecting plate 31.

[0040] To further optimize the above technical solution, the first electric push rod adopts the model DYTZ-300, with a thrust of 300 kg and a stroke of 0-300 mm. At the same time, it can be inclined at 45° to connect the top edge of the cutter bar and the middle part of the connecting plate.

[0041] To further optimize the above technical solution, it further includes a cutter bar adjusting assembly. The cutter bar adjusting assembly is installed between the cutter bar 3 and the machine body 1 and is used to adjust the height of the cutter bar 3.

[0042] To further optimize the above technical solution, the cutter bar adjusting assembly is a second electric push rod. The fixed end of the second electric push rod is fixed on the machine body 1, and the telescopic end of the second electric push rod is fixedly connected to the cutter bar 3.

[0043] To further optimize the above technical solution, the second electric push rod adopts the model DYTZ-500, with a thrust of 500 kg and a stroke of 0-400 mm.

[0044] To further optimize the above technical solution, the connection between the telescopic end of the second electric push rod and the cutter bar 3 is in a ball hinge connection mode, so that the cutter bar 3 can finely adjust its height at any time according to different terrains to adapt to different terrains. At the same time, a corresponding sensor is also installed on the cutter bar 3. This sensor is a special terrain monitoring sensor, which is used to monitor the terrain and feedback it to the control unit. The control unit controls the telescopic movement of the second electric push rod to adjust the height of the cutter bar 3.

[0045] To further optimize the above technical solution, the conveying mechanism 4 is installed on the machine body 1. The inlet end of the conveying mechanism 4 corresponds to the screw conveyor 32, and its outlet end corresponds to the threshing mechanism 5.

[0046] To further optimize the above technical solution, the threshing mechanism 5 includes a feeding roller 51 and a threshing roller 52. The feeding roller 51 is rotatably connected to the machine body 1 and is perpendicular to the conveying path of the conveying mechanism 4. The feeding roller 51 corresponds to the outlet end of the conveying mechanism 4. The threshing roller 52 is rotatably connected to the machine body 1 and is vertically arranged on the side of the feeding roller 51 away from the conveying mechanism 4. Cooperating with the feeding roller 51, it can evenly feed the crops into the threshing roller 52 to achieve threshing. An concave sieve 11 is installed on the machine body 1. The concave sieve 11 is located below the threshing roller 52 and forms a threshing gap with the threshing roller 52.

[0047] To further optimize the above technical solution, the conveying mechanism 4 adopts a scraper conveyor with an inclination angle of 30°, a belt width of 500 mm, and a speed of 1.5 m / s; the inlet end receives the outlet of the screw conveyor 32, and the outlet end corresponds to the feeding roller 51.

[0048] To further optimize the above technical solution, the diameter of the feeding roller 51 is 400 mm, the rotational speed is 350 rpm, and it is perpendicular to the conveying direction of the conveying mechanism 4.

[0049] To further optimize the above technical solution, the number of threshing drums 52 is two, and the two threshing drums 52 are arranged in parallel. On the outer side wall of each threshing drum 52, threshing protrusion strips 521 and spike teeth 522 are fixedly arranged in a spiral manner.

[0050] To further optimize the above technical solution, the height of the spirally arranged threshing protrusion strips 521 is 12 mm, and the pitch is 150 mm; the spike teeth 522 are arranged in a spiral pattern (spiral angle 20°), and the tooth height is 50 mm; the two threshing drums 52 rotate in the same or opposite directions, which is confirmed according to the actual situation.

[0051] To further optimize the above technical solution, the concave sieve 11 is installed on the machine body 1 through the mounting frame 14, and a concave sieve adjustment assembly is provided for adjusting the size of the threshing gap. The diameter of the sieve holes of the concave sieve 11 can be determined according to the actual situation, and the curvature radius matches that of the threshing drum 52, and the gap is adjustable within 5 - 30 mm. The concave sieve adjustment assembly can adopt different structural forms, such as a hydraulic cylinder, a screw, or an electric push rod, as long as it can meet the height adjustment of the concave sieve 11, which will not be elaborated here.

[0052] To further optimize the above technical solution, the aperture diameters of the sieve holes of the concave sieve 11 located at the threshing protrusion strips 521 and the spike teeth 522 can be different.

[0053] To further optimize the above technical solution, the machine body 1 and below the concave sieve 11 is provided with a multi-stage vibrating sieve 12. On one side of the multi-stage vibrating sieve 12, and close to the side of the conveying mechanism 4, a blower 7 is installed, and the air duct of the blower 7 corresponds to the multi-stage vibrating sieve 12.

[0054] To further optimize the above technical solution, the multi-stage vibrating sieve 12 includes a receiving plate 121, a scale sieve 122, and a woven sieve mesh 123 arranged in sequence from top to bottom; the scale sieve 122 (sieve holes adjustable 0 - 30 mm), amplitude 40 mm, frequency 5 Hz, inclination angle 5°; the woven sieve mesh 123 (aperture determined / selected according to the actual situation), amplitude 30 mm, frequency 8 Hz, inclination angle 8°; (the specific transmission method is not shown in the figure, and the structure of this transmission method is prior art and will not be elaborated here).

[0055] To further optimize the above technical solution, the blower 7 adopts a centrifugal blower, and the air volume is 1800 m3 / h, the air duct is aligned with the multi-stage vibrating screen.

[0056] To further optimize the above technical solution, a collection trough 8 is provided below the multi-stage vibrating screen 12. The collection trough 8 transports the collected grains to the grain collection bin 9 on the machine body 1 through a transmission mechanism.

[0057] To further optimize the above technical solution, the collection trough 8 can have a U-shaped trough bottom with a trough width of 400 mm. A spiral conveyor 81 is installed at the bottom. The grains are lifted from the collection trough 8 to the grain collection bin 9 through the spiral conveyor 81 in combination with the upwardly inclined spiral inside the machine body 1; a sensor is installed inside the grain collection bin 9 to monitor whether the grains inside reach the specified height. A discharge cylinder 10 is installed at the top of the grain collection bin 9, and a screw conveyor is provided inside the discharge cylinder 10 to achieve the discharge of the grain collection bin 9.

[0058] To further optimize the above technical solution, it also includes a control unit electrically connected to all the above components. The control unit receives corresponding signals and controls the corresponding components to make corresponding adjustments, such as the traveling speed of the traveling drive mechanism 2, the rotational speeds of components such as the rotating shaft 331, the screw conveyor 32, the conveying mechanism 4, the feeding roller 51, the threshing roller 52, or other parameter information of other components.

[0059] To further optimize the above technical solution, a cab 13 is provided on the machine body 1, and corresponding operation buttons are provided inside the cab 13 to control corresponding parameter control or adjustment.

[0060] The implementation mode of the present invention is as follows:

[0061] When operating in different terrains, according to the actual situation, the corresponding height of the cutting table 3 is adjusted through the second electric push rod, and the height of the reel 332 is adjusted through the first electric push rod; the crop is cut by the reciprocating cutter 34 and conveyed to the conveying mechanism 4 through the screw conveyor 32; it is conveyed to the feeding roller 51 through the conveying mechanism 4. After the feeding roller 51 levels the crop, it enters the threshing roller 52, and threshing is completed by the threshing roller 52; the threshed material falls into the multi-stage vibrating screen 12 through the concave screen 11; the blower 7 blows away the light impurities, and the grains are screened and fall into the collection trough 8; the spiral conveyor sends the grains into the grain collection bin 9; after the grain collection bin 9 is full, the discharge of the grains is achieved through the screw conveyor inside the discharge cylinder 10.

[0062] The structures not mentioned in the present invention are all prior arts.

[0063] In the present specification, the various embodiments are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other. For the apparatuses disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple. For the relevant parts, reference can be made to the description in the method section.

[0064] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hill combine harvester, comprising a machine body (1), a traveling drive mechanism (2) is provided below the machine body (1), and a cutting table (3), a conveying mechanism (4) and a threshing mechanism (5) are installed on the machine body (1); characterized in that, Both sides of the header (3) are hinged with connecting plates (31), and a screw conveyor (32) and a reel (33) are rotatably connected to the inner side thereof; the reel (33) includes a rotating shaft (331) and a reel wheel (332), the rotating shaft (331) is rotatably connected between the two connecting plates (31), and a reel adjusting assembly (6) is installed between the connecting plate (31) and the header (3) for adjusting the height of the reel (33); the reel wheel (332) is fixed on the rotating shaft (331), and the teeth (3321) of the reel wheel (332) are slidably connected to the reel rods (3323) of the reel wheel (332) through collar rings (3322) and fastened by fasteners.

2. The hilly combine harvester according to claim 1, wherein, The reel wheel (332) further includes discs (3324); the number of the discs (3324) is two, and the two discs (3324) are fixed at both ends of the rotating shaft (331), the number of the reel rods (3323) is multiple, and the multiple reel rods (3323) are circumferentially arranged between the two discs (3324); the number of the collar rings (3322) is multiple, and the multiple collar rings (3322) are slidably connected to the reel rods (3323), the teeth (3321) are fixed on the collar rings (3322), and the collar rings (3322) and the reel rods (3323) are fastened by bolts (3325).

3. The hill combine harvester according to claim 1, characterized in that, The reel adjusting assembly (6) is a first electric push rod, the number of the first electric push rods is two, the fixed ends of the two first electric push rods are respectively fixed on the top edges on both sides of the header (3), and the telescopic ends of the first electric push rods are fixedly connected to the connecting plate (31).

4. A hilly combine harvester according to claim 1, characterized in that, It further includes a header adjusting assembly, and the header adjusting assembly is installed between the header (3) and the machine body (1) for adjusting the height of the header (3).

5. A hilly combine harvester according to claim 4, characterized in that, The header adjusting assembly is a second electric push rod, the fixed end of the second electric push rod is fixed on the machine body (1), and the telescopic end of the second electric push rod is fixedly connected to the header (3).

6. The hill combine harvester according to claim 1, wherein, The conveying mechanism (4) is installed on the machine body (1), the inlet end of the conveying mechanism (4) corresponds to the screw conveyor (32), and the outlet end thereof corresponds to the threshing mechanism (5).

7. The hill combine harvester according to claim 6, characterized in that, The threshing mechanism (5) includes a feeding roller (51) and a threshing roller (52), the feeding roller (51) is rotatably connected to the machine body (1) and is perpendicular to the conveying path of the conveying mechanism (4), the feeding roller (51) corresponds to the outlet end of the conveying mechanism (4), the threshing roller (52) is rotatably connected to the machine body (1) and is vertically arranged on the side of the feeding roller (51) away from the conveying mechanism (4), and a concave sieve (11) is installed on the machine body (1), the concave sieve (11) is located below the threshing roller (52) and forms a threshing gap with the threshing roller (52).

8. The hill combine harvester according to claim 7, characterized in that, The number of the threshing cylinders (52) is two, and the two threshing cylinders (52) are arranged in parallel. A spirally arranged threshing protrusion strip (521) and spike teeth (522) are fixed on the outer side wall of each threshing cylinder (52).

9. The hill combine harvester according to claim 7, characterized in that, A multi-stage vibrating screen (12) is provided below the concave sieve (11) and within the body (1). A blower (7) is installed on one side of the multi-stage vibrating screen (12) and close to the conveying mechanism (4). The air duct (71) of the blower (7) corresponds to the multi-stage vibrating screen (12).

10. A hilly combine harvester according to claim 9, characterized in that, A collection tank (8) is provided below the multi-stage vibrating screen (12). The collection tank (8) conveys the collected grains to the grain collection bin (9) on the body (1) through a transmission mechanism.

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