A vertical axial-flow wheel type combine harvester

Abstract

The present invention relates to a vertical axial-flow wheel type grain combine harvester, which includes a cutting table, a traveling system, a transmission system, a threshing and cleaning system, and a grain tank. The threshing and cleaning system is fixedly installed on the traveling system. The cutting table is installed in front of the threshing and cleaning system and is communicated with the threshing and cleaning system. The grain tank is fixedly installed above the threshing and cleaning system and is communicated with the threshing and cleaning system. The transmission system includes an engine and an intermediate main transmission shaft. The engine is fixedly installed above the threshing and cleaning system and is located behind the grain tank. The intermediate main transmission shaft is located between the grain tank and the engine. The engine is drivingly connected to the cutting table and the threshing and cleaning system through the intermediate main transmission shaft. In view of the problem that the overall structural layout of the existing small axial-flow wheel type grain combine harvester is not compact enough, the present invention changes the overall layout of the whole machine, reasonably arranges each functional component, arranges more structures in the limited space, and makes the whole machine more meet the requirements of miniaturization.

Description

Technical Field

[0001] The invention relates to a longitudinal axis flow wheel type grain combine harvester, belonging to the technical field of harvesters in agricultural machinery. Background Art

[0002] In recent years, the continuous development of crawler-type longitudinal-flow combine harvesters has made them increasingly popular among users for their harvesting efficiency and multi-purpose capabilities. In the wheeled grain combine harvester market, medium and large-sized harvesters remain the mainstream. In recent years, some manufacturers have introduced small, simple, and affordable longitudinal-flow wheeled grain combine harvesters. Other domestic manufacturers have followed suit, and in the past two years, they have achieved significant market influence and seen sales continue to increase. After market use and feedback, the shortcomings of small longitudinal-axis flow wheel grain combine harvesters have been exposed. Their overall structural layout is not compact enough and miniaturization is not complete. For example, the gearbox and hydraulic motor are rear-mounted, located behind the front axle, which makes the cleaning fan position further back and can only be set on the outside of the front drive wheel, taking up too much space. The cleaning fan generally fixes the blades on the integral disc and is usually pulled out and disassembled in the form of an impeller assembly. This requires sufficient space on both sides of the fan to achieve this. If there are components on both sides of the fan, there are certain limitations on disassembly and assembly. The transmission structure is relatively complex, and the transmission surface is far from the body. It is generally driven by a long shaft, and then a belt drives multiple components, which causes power to deviate from the body and transmits it. Complex power distribution is not conducive to compact structure. The threshing drum is usually a one-piece structure. When a component of the drum needs to be replaced, the entire drum usually needs to be disassembled, and the drum installation and maintenance work is cumbersome. The drum is usually installed on a chassis with a complex chassis structure. When a component of the drum needs to be replaced, all components on the chassis usually need to be disassembled, and the chassis installation and maintenance work is cumbersome. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a longitudinal axis flow wheel type grain combine harvester to solve the above technical problems.

[0004] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: A longitudinal-axis flow wheel type grain combine harvester comprises a harvesting platform, a traveling system, a transmission system, a threshing and cleaning system and a grain tank, wherein the threshing and cleaning system is fixedly mounted on the traveling system, the harvesting platform is mounted in front of the threshing and cleaning system and is communicated with the threshing and cleaning system, the grain tank is fixedly mounted above the threshing and cleaning system and is communicated with the threshing and cleaning system, the transmission system comprises an engine and an intermediate main transmission shaft, the engine is fixedly mounted above the threshing and cleaning system and is located behind the grain tank, the intermediate main transmission shaft is located between the grain tank and the engine, and the engine is connected to the harvesting platform and the threshing and cleaning system through the intermediate main transmission shaft.

[0005] The beneficial effects of the present invention are as follows: In view of the problem that the overall structural layout of the existing small axial-flow wheel type grain combine harvester is not compact enough, the present invention changes the overall layout of the whole machine, reasonably arranges each functional component, arranges more structures within the limited space, and makes the whole machine more in line with the requirements of miniaturization.

[0006] On the basis of the above technical solutions, the present invention can be further improved as follows.

[0007] Further, the threshing and cleaning system includes a threshing body fixedly installed on the traveling system and a cylinder, concave plate, cleaning fan, sieve box, grain auger and straw auger arranged on the threshing body. The header is communicated with the front side of the cylinder. The outside of the cylinder is sleeved with a concave plate, and a straw discharge port is arranged at the rear side thereof. A chopper is arranged at the straw discharge port. The sieve box is arranged below the cylinder. The cleaning fan is located at the front end of the sieve box. The front side of the bottom of the sieve box is communicated with the grain auger, and the grain auger is communicated with the grain tank. The rear side of the bottom of the sieve box is communicated with the straw auger, and the straw auger is communicated to the front side of the cylinder.

[0008] The beneficial effect of adopting the above further solution is that the present invention does not set a chassis frame, and the threshing body and the chassis frame are combined into one to form a structural framework for installing other components, and the structural layout is more compact.

[0009] Further, the threshing body includes a first frame, a second frame, a third frame and a fourth frame for supporting the cylinder. The first frame and the second frame are arranged in parallel with each other. The two ends of the third frame are correspondingly connected to one end of the first frame and one end of the second frame. The fourth frame is obliquely arranged between the first frame and the second frame. A plurality of maintenance holes corresponding to the fourth frame are respectively arranged on the first frame and the second frame.

[0010] The beneficial effect of adopting the above further solution is that by designing a threshing body with maintenance holes, the cylinder is directly installed on the threshing body, the chassis is omitted, and it is convenient to install and maintain the cylinder through the maintenance holes, improving work efficiency.

[0011] Further, the cylinder includes a cylinder shaft, at least one first cylinder section and at least one second cylinder section. The first cylinder section and the second cylinder section are detachably sleeved on the cylinder shaft, and the first cylinder section is connected to the second cylinder section.

[0012] The beneficial effect of adopting the above further solution is that by designing multiple detachable cylinder sections, when a certain component of the cylinder needs to be replaced, only the corresponding cylinder section needs to be detached from the cylinder shaft, which is convenient for the installation and maintenance of the cylinder, and is convenient for assembling the cylinder flexibly according to actual needs, improving the applicability of the cylinder.

[0013] Further, the traveling system includes two front drive wheels, a front drive bridge frame with both ends respectively drivingly connected to the two front drive wheels, two rear wheels, and a rear steering bridge frame disposed between the two rear wheels. The front and rear ends of the threshing body are respectively fixedly mounted on the front drive bridge frame and the rear steering bridge frame, and the chopper is mounted on the rear steering bridge frame.

[0014] The beneficial effect of adopting the above further solution is that the threshing body replaces the chassis and is mounted on the front drive bridge frame and the rear steering bridge frame. The front drive bridge frame can also adjust the lifting of the cutter bar through the cutter bar lifting oil cylinder, and the rear steering bridge frame can support the chopper.

[0015] Further, the front drive bridge frame includes a front bridge and a gearbox. The left and right sides of the gearbox are respectively drivingly connected to a left transmission case and a right transmission case through a left drive half shaft and a right drive half shaft. The left transmission case and the right transmission case are respectively drivingly connected to the two front drive wheels. The left and right side ends of the front bridge are respectively fixedly connected to the left transmission case and the right transmission case. The gearbox is located at a position slightly forward of the middle of the front bridge, and the middle of the front bridge is bent upward to form an avoidance structure, and the avoidance structure is located above the rear end of the gearbox.

[0016] Further, the front drive bridge frame further includes a hydraulic motor. A hydraulic motor mounting seat is fixedly installed on one side of the rear end of the gearbox, and the hydraulic motor is fixedly installed on the hydraulic motor mounting seat. The output shaft of the hydraulic motor is drivingly connected to the gearbox. The hydraulic motor is located at the rear lower part of the avoidance structure, and the cleaning fan is located behind the gearbox and between the two front drive wheels.

[0017] The beneficial effect of adopting the above further solution is that the gearbox is arranged at a position slightly forward of the center between the two front drive wheels and in front of the front bridge, and a corresponding avoidance structure is provided on the front bridge to avoid the front-mounted gearbox without affecting the connection between the front bridge and the chassis or the body. Such a structure can also move the position of the cleaning fan forward and can be arranged between the two front drive wheels, saving the space for the front and rear structure layout, with a compact structure and more in line with the requirements of miniaturization.

[0018] Further, the output shaft of the hydraulic motor is also drivingly connected to a rear drive gearbox, and the rear drive gearbox is drivingly connected to the rear steering bridge frame through a coupling assembly. Both ends of the rear steering bridge frame are respectively connected to the two rear wheels.

[0019] The beneficial effect of adopting the above further solution is that in addition to front-wheel drive, the present invention can also adopt four-wheel drive, and the traveling ability is stronger.

[0020] Furthermore, the transmission system further includes an intermediate drive wheel 1 and an intermediate drive wheel 2. The engine is drivingly connected to the intermediate drive wheel 1 through the intermediate main drive shaft. The intermediate drive wheel 1 is drivingly connected to the grain auger drive wheel, the straw auger drive wheel, and the sieve box drive wheel below it. The intermediate drive wheel 1 is also drivingly connected to the intermediate drive wheel 2 on its left side. The intermediate drive wheel 2 is drivingly connected to the cutter bar drive wheel in front of it and the fan drive wheel below it. The intermediate main drive shaft is also respectively drivingly connected to the roller drive wheel on its front lower side or rear lower side and the chopper intermediate wheel on its rear lower side. A fuel tank for supplying fuel is installed at the rear side of the engine. The engine is also drivingly connected to a gear pump. A hydraulic oil tank communicated with the gear pump is installed at the rear side of the fuel tank or between the grain tank and the engine. The gear pump is communicated with the hydraulic motor.

[0021] The beneficial effect of adopting the above further scheme is that the transmission system of the present invention has a compact structure. By arranging the intermediate main drive shaft, the intermediate drive wheel 1, and the intermediate drive wheel 2 in this way, it is not necessary to transmit power downward blindly. The power can be dispersed to the front and rear sides by using the intermediate drive wheel 1 and the intermediate drive wheel 2, making the transmission structure close to the body, with a compact structure and a simple and effective transmission for the whole machine.

[0022] Furthermore, the grain tank is also equipped with a hydraulic lifting and rotating grain unloading cylinder.

[0023] The beneficial effect of adopting the above further scheme is that the grain tank needs to be equipped with a grain unloading cylinder. Preferably, the grain unloading cylinder is a hydraulic lifting and rotating grain unloading cylinder for high-position grain unloading.

[0024] Furthermore, the roller is equipped with a gear shift transmission or a stepless speed regulation transmission.

[0025] Furthermore, for the cutter bar, various harvesting attachments for miscellaneous grains (such as corn, soybean, sorghum, rapeseed, millet, quinoa, etc.) can be configured. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic structural diagram of a longitudinal axial flow type grain combine harvester of the present invention;

[0027] Figure 2 is a schematic structural diagram of the threshing body of the present invention;

[0028] Figure 3 is a schematic structural diagram of the threshing body of the present invention;

[0029] Figure 4 is a schematic structural diagram of the threshing body of the present invention after installing the roller;

[0030] Figure 5 is a schematic structural diagram of the threshing body of the present invention after installing the roller;

[0031] Figure 6 Front view of the drum of the present invention;

[0032] Figure 7 Stereogram of the drum of the present invention;

[0033] Figure 8 Schematic structural enlarged view of the mounting base of the present invention;

[0034] Figure 9 Stereogram of the impeller of the blower of the present invention;

[0035] Figure 10 Side view of the impeller of the blower of the present invention;

[0036] Figure 11 Stereogram of the exploded structure of the cleaning blower of the present invention Figure 1 ;

[0037] Figure 12 Stereogram of the exploded structure of the cleaning blower of the present invention Figure 2 ;

[0038] Figure 13 Schematic structural view of the front drive bridge of the present invention;

[0039] Figure 14 Schematic structural view of the front drive bridge after installing the cross bridge of the cutting table;

[0040] Figure 15 Schematic side view of the front drive bridge after installing the threshing body (the cutting table lifting cylinder is omitted);

[0041] Figure 16 Schematic front view of the front drive bridge after installing the threshing body;

[0042] Figure 17 Stereogram of the transmission system of the present invention;

[0043] Figure 18 Schematic front view of the transmission system of the present invention;

[0044] Figure 19 Schematic view of the structure of the present invention when four-wheel drive is used;

[0045] Figure 20 Schematic view of the structure of the present invention when the drum drive wheel is placed in the front;

[0046] Figure 21 Schematic view of the structure of the present invention when the drum drive wheel is placed in the rear;

[0047] Figure 22This is a schematic structural diagram of the grain tank of the present invention.

[0048] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0049] 1. Header

[0050] 2. Transmission system; 201. Engine; 202. Intermediate main transmission shaft; 203. First intermediate transmission wheel; 204. Second intermediate transmission wheel; 205. Grain auger transmission wheel; 206. Residue auger transmission wheel; 207. Sieve box transmission wheel; 208. Sieve box reverse wheel; 209. Header transmission wheel; 210. Fan transmission wheel; 211. Cylinder transmission wheel; 212. Chopper intermediate wheel; 213. Tensioning wheel

[0051] 3. Traveling system; 310. Gearbox; 311. Right drive half shaft; 312. Left drive half shaft; 313. Hydraulic motor mounting seat; 320. Front bridge; 321. Avoidance structure; 322. Fixed seat; 323. Fixed plate; 324. Header lift cylinder; 330. Hydraulic motor; 331. Rear drive gearbox; 332. Coupling assembly

[0052] 4. Grain tank; 401. Hydraulic lift and rotary unloading grain tube

[0053] 5. Threshing and cleaning system

[0054] 6. Threshing body; 601. First frame; 602. Second frame; 603. Third frame; 604. Fourth frame; 605. Maintenance hole; 606. Support plate; 607. Baffle; 608. Mounting seat; 609. Shaft hole; 610. Rear bridge connection plate; 611. Rear bridge connection hole; 612. Front bridge connection plate; 613. Front bridge connection hole; 614. Guide groove; 615. Cleaning lower shell connection hole; 616. Fan connection hole

[0055] 7. Cylinder; 701. Cylinder shaft; 702. First cylinder section; 703. Second cylinder section; 704. Connection disk; 705. First connecting rod; 706. Threaded plate; 707. First rod tooth; 708. Second connecting rod; 709. Second rod tooth; 710. Anti-winding ring; 711. Feeding component; 712. Feeding cone; 713. Spiral blade; 714. Mounting seat

[0056] 8. Fuel tank

[0057] 9. Hydraulic oil tank

[0058] 10. Cleaning fan; 100. Fan impeller; 101. Upper volute; 102. Lower volute; 103. Air volume adjustment plate; 104. Fan blades; 105. Impeller support plate; 106. Connecting section; 107. Support section; 108. Wedge plate; 109. Connecting plate; 110. Fan shaft; 111. Fixing bolt; 112. Air inlet; 113. Air outlet; 114. Adjusting bolt; 115. Adjustment hole;

[0059] 11. Chopper. DETAILED DESCRIPTION

[0060] The principles and features of the present invention are described below. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0061] Example 1

[0062] like Figure 1 As shown, this embodiment relates to a longitudinal-axis flow wheel type grain combine harvester, comprising a harvesting platform 1, a traveling system 3, a transmission system 2, a threshing and cleaning system 5 and a grain tank 4, wherein the threshing and cleaning system 5 is fixedly mounted on the traveling system 3, the harvesting platform 1 is mounted in front of the threshing and cleaning system 5 and is communicated with the threshing and cleaning system 5, the grain tank 4 is fixedly mounted above the threshing and cleaning system 5 and is communicated with the threshing and cleaning system 5, the transmission system 2 comprises an engine 201 and an intermediate main transmission shaft 202, the engine 201 is fixedly mounted above the threshing and cleaning system 5 and is located behind the grain tank 4, the intermediate main transmission shaft 202 is located between the grain tank 4 and the engine 201, and the engine 201 is transmission-connected to the harvesting platform 1 and the threshing and cleaning system 5 through the intermediate main transmission shaft 202.

[0063] This embodiment addresses the problem of the existing small axial-flow wheel grain combine harvester having an overall structural layout that is not compact enough. By changing the overall layout of the machine, various functional components are reasonably arranged, and more structures are arranged in a limited space, the whole machine is more in line with the requirements of miniaturization.

[0064] The transmission connection in Example 1 refers to the linkage of various components through transmission components such as belts or chains to realize the functions of each component itself, and the communication is the transmission of materials from one component to another.

[0065] This embodiment may be a grain combine harvester, such as a wheat harvester, a corn harvester, a soybean harvester, etc.

[0066] Example 2

[0067] On the basis of Embodiment 1, the threshing and cleaning system 5 includes a threshing body 6 fixedly mounted on the traveling system 3, and a cylinder 7, a concave plate, a cleaning fan 10, a sieve box, a grain auger and a straw auger arranged on the threshing body 6. The header 1 is communicated with the front side of the cylinder 7. The outside of the cylinder 7 is sleeved with a concave plate, and a straw discharge port is arranged at the rear side thereof. A chopper 11 is arranged at the straw discharge port. The sieve box is arranged below the cylinder 7. The cleaning fan 10 is located at the front end of the sieve box. The front side of the bottom of the sieve box is communicated with the grain auger, and the grain auger is communicated with the grain tank 4. The rear side of the bottom of the sieve box is communicated with the straw auger, and the straw auger is communicated to the front side of the cylinder 7.

[0068] In this embodiment, the chassis frame is not provided, and the threshing body 6 and the chassis frame are combined into one to form a structural frame for installing other components, and the structural layout is more compact.

[0069] Embodiment 3

[0070] As Figures 2 - 5 shown, on the basis of Embodiment 2, the threshing body 6 includes a first frame 601, a second frame 602, a third frame 603 and a fourth frame 604 for supporting the cylinder 7. The first frame 601 and the second frame 602 are arranged in parallel. The two ends of the third frame 603 are correspondingly connected to one end of the first frame 601 and one end of the second frame 602. The fourth frame 604 is obliquely arranged between the first frame 601 and the second frame 602. A plurality of maintenance holes 605 corresponding to the fourth frame 604 are respectively arranged on the first frame 601 and the second frame 602.

[0071] By designing the threshing body 6 with maintenance holes 605, the cylinder 7 is directly installed on the threshing body 6, the chassis is omitted, and it is convenient to install and maintain the cylinder 7 through the maintenance holes 605, improving work efficiency.

[0072] Among them, the cylinder 7 can be a segmented detachable cylinder or an integral cylinder.

[0073] The threshing body 6 of this embodiment is a frame-type integral structure; there are observation, adjustment and maintenance windows (i.e., maintenance holes 605) left on the side walls; horizontal frame beams are provided on the outer side walls, and inclination brackets are welded on the inner side; the rear side wall is a detachable structure, which is convenient for disassembling and assembling the cylinder 7 for maintenance; it is an assembled structure with the front drive bridge and the rear rotating bridge; the bottom shell of the cleaning chamber and the fan volute are of a split assembled structure with other parts of the threshing body 6. The threshing body 6 is an overall assembled structure; the upper beam of the side wall is obliquely welded; preferably, the front drive bridge and the rear rotating bridge are connected by welding; the cleaning chamber and the fan volute are integrally connected to other parts of the threshing body 6 by welding; the front side wall is a detachable structure, which is convenient for disassembling and assembling the cylinder 7 for maintenance.

[0074] The existing harvesting machine bodies mostly adopt a plate-welding integrated structure, which has a complex structure, heavy weight and high cost. In this embodiment, a threshing machine body 6 with a frame-type integrated structure is provided. The outer side wall is a horizontal frame beam, and an inclined support structure is welded inside; aiming at the structure of the existing harvesting machine that needs to remove the drum 7 as a whole when harvesting different crops and repairing the drum 7, this embodiment newly designs the body structure. Observation, adjustment and repair windows are left on both side walls, which is convenient for replacing threshing elements. At the same time, the rear side wall of the body is changed to an open structure, which is convenient for overall disassembly and repair of the drum 7; for the existing harvester, the front and rear axles, the lower shell of the cleaning chamber, and the cleaning fan 10 mostly adopt a connection structure between the chassis frame and the body, with a complex structure. In this embodiment, a newly designed integrated frame structure body is welded, and the connection with the front and rear axles, the lower shell of the cleaning chamber, and the cleaning fan 10 can be realized with a simple structure. It is divided into a four-section frame welding structure, which is welded by four parts of the frame structure; connection holes are opened on the left and right side frame welds to realize the connection with the front and rear, the lower cleaning shell, and the cleaning fan 10 structures; a repair hole 605 is opened on the left frame weld, and a repair hole 605 is opened on the right frame weld to facilitate the disassembly and repair of threshing elements; an open structure is left at the rear of the body weld to realize the overall disassembly of the drum 7.

[0075] Preferably, the fourth frame 604 includes: a plurality of support plates 606, the support plates 606 are semi-circular arc structures, and the plurality of support plates 606 are arranged at intervals between the first frame 601 and the second frame 602 and the arc opening ends are arranged upwards. The heights of the plurality of support plates 606 are sequentially increased from one end of the first frame 601 to the other end. The setting of the support plates 606 is used to install the drum 7, which is convenient for the drum 7 to be inclined on the threshing machine body 6, and is convenient for taking out and installing the drum 7 on the threshing machine body 6, improving work efficiency.

[0076] Preferably, the repair hole 605 corresponds to the gap between two adjacent support plates 606, the gap between the support plate 606 and the third frame 603, and the gap between the support plate 606 and the other end of the first frame 601. The repair hole 605 corresponds to the gap between two adjacent support plates 606, which is convenient for finding the fault position of the drum 7 and is convenient for maintaining the drum 7 through the repair hole 605.

[0077] Preferably, a concave plate is provided on the fourth frame 605. The concave plate is an arc plate, which is correspondingly installed on the support plate 606 and is arranged below the drum 7. A cover plate is covered above the drum 7, and the cover plate and the concave plate enclose a threshing cavity, and the drum 7 is located in the threshing cavity. The concave plate can be divided into three sections corresponding to the front and rear of the drum 7 and are respectively fixedly connected to the corresponding support plates 606, and it can be disassembled separately.

[0078] Among them, a gap is provided between the concave plate and the roller 7. The position of the mounting seat 608 is the feed inlet of the threshing body 6, and the position of the baffle 607 is the discharge outlet of the threshing body 6.

[0079] Preferably, the multiple support plates 606 are parallel to each other. The multiple support plates 606 being parallel to each other are used to support the roller 7, improving the stability and reliability of the threshing body 6.

[0080] Preferably, at the other end of the first frame 601, a baffle 607 is provided. The two ends of the baffle 607 are correspondingly connected to the other end of the first frame 601 and the other end of the second frame 602. At the top of the baffle 607, a semi-circular arc groove for mounting the roller 7 is provided. The baffle 607 is provided to support the roller 7, facilitating the installation and maintenance of the roller 7.

[0081] Preferably, on the third frame 603, a mounting seat 608 for mounting the roller is provided. The mounting seat 608 is a plate body. The two ends of the mounting seat 608 are respectively connected to the first frame 601 and the second frame 602. A shaft hole 609 is provided on the mounting seat 608. The mounting seat 608 is provided to mount the roller 7, enabling the roller 7 to be rotatably mounted on the threshing body 6, improving the stability and reliability of the threshing body 6.

[0082] Preferably, at the bottom of the other ends of the first frame 601 and the second frame 602, rear axle connecting plates 610 for connecting to the rear rotating bridge are respectively provided. The rear axle connecting plates 610 are plate-like structures. The rear axle connecting plates 610 are vertically arranged. Rear axle connecting holes 611 are provided on the rear axle connecting plates 610. The rear axle connecting plates 610 are provided to connect the threshing body 6 to the rear rotating bridge, facilitating the installation and maintenance of the threshing body 6.

[0083] Preferably, at the bottom of one end of the first frame 601 and the second frame 602, front axle connecting plates 612 for connecting to the front drive bridge are respectively provided. The front axle connecting plates 612 are horizontally arranged. Front axle connecting holes 613 are provided on the front axle connecting plates 612. The front axle connecting plates 612 are provided to connect the threshing body 6 to the front drive bridge, facilitating the installation and maintenance of the threshing body 6.

[0084] Preferably, on the bottom of the first frame 601 and the bottom of the second frame 602, guide grooves 614 opening outward are provided. At the bottom of the guide grooves 614, cleaning lower shell connecting holes 615 and fan connecting holes 616 are provided. The cleaning lower shell connecting holes 615 and the fan connecting holes 616 are provided to facilitate the connection of the threshing body 6 with other components.

[0085] Preferably, the first frame 601, the second frame 602, and the third frame 603 enclose a cuboid structure. The first frame 601, the second frame 602, and the third frame 603 enclose a rectangular structure, which improves the stability and reliability of the threshing body 6, enhances the load capacity of the threshing body 6, and reduces the weight of the threshing body 6.

[0086] Embodiment 4

[0087] As Figures 6 - 8 shown, on the basis of Embodiment 2, the drum 7 includes a drum shaft 701, at least one first drum section 702, and at least one second drum section 702. The first drum section 702 and the second drum section 703 are detachably sleeved on the drum shaft 701, and the first drum section 702 is connected to the second drum section 703.

[0088] By designing multiple detachable drum sections, when a certain component of the drum 7 needs to be replaced, only the corresponding drum section needs to be detached from the drum shaft 701, which facilitates the installation and maintenance of the drum 7, and is convenient for flexible assembly of the drum 7 according to actual needs, improving the applicability of the drum 7.

[0089] Among them, the drum shaft 701 can be an integral structure.

[0090] Preferably, the drum 7 of this embodiment adopts a three-section combination (i.e., one first drum section 702 and two second drum sections 703), and assembled threshing elements (threaded plate + rod teeth, rod teeth, rod teeth), which are divided into three sections. The first section is in the form of rasp bars + rod teeth, and the middle and rear sections are in the form of rod teeth. The front section (i.e., the first drum section 702) and the middle section (i.e., the second drum section 703) are mainly used for threshing grains, with strong adaptability to crop varieties. The combination of the front section and the middle section has strong adaptability to the harvesting time of crops suitable for harvesting at different maturities; the rear section (i.e., the second drum section 703) is mainly used for effective separation of straw, making the straw separation smooth. The threshing effect and separation effect of this multi-element three-section combination and assembled axial-flow drum 7 are effectively enhanced, and at the same time, it is possible to quickly replace threshing elements when harvesting different crops, improving work efficiency.

[0091] The effective combination of different threshing forms and structures of the drum 7 is realized on the harvester, improving the threshing and separation efficiency of the drum 7. The device has a clever structure, is easy to manufacture, and is quick to disassemble, install, and replace, with promotional value and broad market application prospects.

[0092] The drum 7 is divided into three sections. The first section is in the form of rasp bars + spike teeth, and the middle and last sections are in the form of spike teeth. The front section is connected to the drum shaft 701 through front side plate welding and middle side plate welding (i.e., the connecting plate 704). The rasp bars (i.e., the threaded plate 706) and spike teeth (i.e., the first spike tooth 707) are evenly distributed at intervals in the circumferential direction of the drum 7, and the quantity can be reasonably matched according to the size of the drum 7 and the crop variety. The spike teeth are arranged on the spike tooth shafts (i.e., the second connecting rod 709) of the middle-section rasp bars and the rear-section rasp bars at certain intervals. The two ends of the middle section are connected to the drum shaft 701 through middle side plate welding (i.e., the connecting plate 704), and the rear section is connected to the drum shaft 701 through middle side plate welding and rear side plate welding (i.e., the connecting plate 704) and is evenly distributed in the circumferential direction of the drum 7. The quantity of the spike teeth can be adjusted as needed like that of the rasp bars. When different crops need to be harvested, the threshing elements (i.e., the first drum section 702 and the second drum section 703) of different sections (front section, middle section, rear section) can be disassembled and assembled separately as needed. Compared with the structures of previous harvesting machines, it is not necessary to pull out the entire drum 7 to replace the threshing elements, thus improving the replacement efficiency. Three-section threshing spike bars; different crop threshing accessories can be replaced without disassembling the drum 7.

[0093] Preferably, a plurality of connecting plates 704 are provided on the drum shaft 701. The plurality of connecting plates 704 are spaced apart from each other and arranged in parallel. The connecting plates 704 are sleeved on the side wall of the drum shaft 701, and the plurality of connecting plates 704 are correspondingly arranged at the two ends of the first drum section 702 and the two ends of the second drum section 703. The arrangement of the connecting plates 704 is used to connect two adjacent drum sections and install the drum sections on the drum shaft 701.

[0094] Preferably, the first drum section 702 includes: a plurality of first connecting rods 705. The plurality of first connecting rods 705 are parallel to each other and arranged at intervals in the circumferential direction around the drum shaft 701. A plurality of threaded plates 706 and / or a plurality of first spike teeth 707 are provided on the first connecting rods 705. The arrangement of the plurality of first connecting rods 705 and the plurality of threaded plates 706 is used to thresh cereal straws with different maturities, improve the applicability of the drum 7, improve the working efficiency, and improve the stability and reliability of the drum 7.

[0095] All the first connecting rods 705 can be provided with threaded plates 706, all can be provided with first spike teeth 707, the first connecting rods 705 with threaded plates 706 and the first connecting rods 705 with first spike teeth 707 can be arranged at intervals, or partial threaded plates 706 and partial first spike teeth 707 can be provided on the first connecting rods 705. Users can select according to actual needs to improve the threshing efficiency and optimize the threshing effect.

[0096] Preferably, the multiple first rod teeth 707 are spaced apart from each other and radially radiate outward along the radial direction of the drum shaft 701. The threaded plate 706 is arranged on the first connecting rod 705. The first connecting rod 705 with the threaded plate 706 and the first connecting rod 705 with the first rod teeth 707 are spaced apart from each other. The threaded plate 706 is in the structure of an arc plate, and threads are arranged on the outer side wall of the threaded plate 706. The arrangement of the multiple first rod teeth 707 is used for threshing grains and improving the threshing efficiency.

[0097] Preferably, a mounting seat 714 is arranged between the threaded plate 706 and the first connecting rod 705. The top of the mounting seat 714 is an arc protrusion, and the bottom of the mounting seat 714 is an arc groove.

[0098] Preferably, the second drum section 703 includes: multiple second connecting rods 708, which are spaced apart from each other and correspondingly surround and are arranged between two adjacent connecting disks 704, and the multiple second connecting rods 708 are arranged parallel to each other. The arrangement of the multiple second connecting rods 708 facilitates the installation and maintenance of the second drum section 703.

[0099] Preferably, multiple second rod teeth 709 are arranged on the side wall of the second connecting rod 708, and the multiple second rod teeth 709 are spaced apart from each other and radially radiate outward along the radial direction of the drum shaft 701. The arrangement of the second rod teeth 709 is used for further threshing and sorting grains, and improving the threshing efficiency and accuracy.

[0100] Preferably, the first connecting rod 705 and the second connecting rod 708 are connected to the connecting disk 704 by bolts. The connection of the first connecting rod 705 and the second connecting rod 708 to the connecting disk 704 by bolts facilitates the installation and maintenance of the connecting rods, and improves the stability and reliability of the drum 7.

[0101] Preferably, anti - entanglement rings 710 are arranged at both ends of the drum shaft 701. The anti - entanglement rings 710 are in the structure of circular plates, and the anti - entanglement rings 710 are sleeved on the drum shaft 701. The arrangement of the anti - entanglement rings 710 is used to prevent grains from winding around the connecting rods, improve the working efficiency of the drum 7, and improve the stability and reliability of the drum 7.

[0102] Among them, multiple edges and corners can be arranged on the circumferential side wall of the anti - entanglement ring 710.

[0103] Preferably, a feeding component 711 is arranged at one end of the drum shaft 701. The feeding component 711 is arranged at one end of the drum shaft 701, and the anti - entanglement ring 710 is connected to the feeding component 711. The arrangement of the feeding component 711 is used to transport grains to the drum 7 and improve the working efficiency.

[0104] Preferably, the feeding component 711 includes a feeding cone 712 and a spiral blade 713. The feeding cone 712 is sleeved on the roller shaft 701. Two ends of the feeding cone 712 are correspondingly connected to the anti-tangling ring 710 and the roller shaft 701. The spiral blade 713 is sleeved on the side wall of the feeding cone 712. The feeding cone 712 and the spiral blade 713 are provided to transport grains to the roller 7, improving the working efficiency.

[0105] Embodiment 5

[0106] As Figures 9 - 12 shown, on the basis of Embodiment 2, the cleaning fan 10 includes a fan volute with a split structure, a fan shaft 110 and a fan impeller 100 installed in the fan volute. The fan impeller 100 includes a welded disk assembly, fan blades 104 and an impeller support plate 105. The welded disk assembly is installed on the fan shaft 110. A plurality of the fan blades 104 are arranged along the circumferential direction of the fan shaft 110 and are supported and fixed on the welded disk assembly by the impeller support plate 105. At least one impeller support plate 105 is provided between two adjacent fan blades 104.

[0107] Among them, the number of fan blades 104 on each fan impeller 100 can be 2, 3, 4, 5, 6, 7, 8, 9, 10, etc., or more than 10. The specific number can be set according to needs. The fan blades 104 are arranged along the direction parallel to the fan shaft 110, and the impeller support plate 105 is arranged along the direction perpendicular to the fan shaft 110.

[0108] In this embodiment, the fan blades 104 are supported and fixed on the welded disk assembly by the impeller support plate 105. The fan blades 104 can be separately disassembled from the welded disk assembly by removing the impeller support plate 105, and then taken out from the fan volute through the split fan volute structure. There is no need for the space on both sides of the cleaning fan 10, and it can be directly taken out from the opened fan volute, eliminating certain limitations in the current disassembly and assembly of the fan blades 104.

[0109] Preferably, the fan blades 104 are arranged along the direction parallel to the fan shaft 110, and the impeller support plate 105 is arranged along the direction perpendicular to the fan shaft 110. The fan blades 104 include a straight-line structure and an arc-shaped structure. The straight-line structure is effectively adapted and connected to the impeller support plate 105 and the connecting plate 109 of the welded disk assembly, and the arc-shaped structure extends outward as the blade body.

[0110] Preferably, the hub welding includes a hub 108 and a plurality of connecting plates 109. The hub 108 is coaxially fixed on the fan shaft 110. One ends of the plurality of connecting plates 109 are welded to the hub 108, and the other ends are arranged radially; the fan blades 104 and the other ends of the connecting plates 109 are fixed between the ends of two adjacent impeller support plates 105 by fixing bolts 111. The hub and the connecting plates 109 are welded together, with a simple overall structure, light weight, and convenient connection of the fan blades 104 and the impeller support plates 105.

[0111] Preferably, the impeller support plate 105 includes a support section 107 and two connecting sections 106. The two connecting sections 106 are symmetrically arranged at both ends of the support section 107 at an angle. The fan blades 104 and the other ends of the connecting plates 109 are fixed between the connecting sections 106 of two adjacent impeller support plates 105 by fixing bolts 111. The support section 107 can effectively support two adjacent fan blades 104. The connecting sections 106 at an angle to the support section 107 are conducive to fitting the corresponding fan blades 104 or connecting plates 109, making the structure more compact and reliable. The angle between the support section 107 and the connecting section 106 can be set according to the number of fan blades 104 to ensure that the connecting section 106 is closely fitted with the connecting plate 109 or the fan blade 104.

[0112] Preferably, the cross-section of the connecting plate 109 is an L-shaped structure. The L-shaped connecting plate is convenient for connecting the fan blades 104 and the impeller support plates 105, and can also shield the connection structure and position, making the overall structure beautiful and compact.

[0113] Preferably, at least two fan impellers 100 are arranged side by side along the axial direction of the fan shaft 110. The structure of the fan impeller 100 adopts a multi-section parallel structure, which is conducive to separately disassembling each fan blade 104.

[0114] Wherein, each fan impeller 100 includes at least two hub weldings arranged side by side and at least two groups of impeller support plates 105. The fan blades 104 on each fan impeller 100 are correspondingly connected to at least two hub weldings arranged side by side, and each hub welding also corresponds to connecting a group of impeller support plates 105, which is conducive to the stability of the fan blades 104. For example, the connecting plates 109 on each hub welding are respectively connected to an impeller support plate 105. The two hub weldings are respectively installed at positions near the two ends of the fan blade 104, and the two groups of impeller support plates 105 are also respectively fixed at positions near the two ends of the fan blade 104 to stably support the fan blade 104.

[0115] Preferably, the fan volute includes an upper volute 101 and a lower volute 102, and the lower volute 102 is detachably connected to the upper volute 101. Specifically, the lower volute 102 is fixed below the two sides of the upper volute 101 by bolts. When the lower volute 102 needs to be disassembled, the lower volute 102 can be directly removed from the upper volute 101. The lower volute 102 can also be hinged to one side of the upper volute 101 by means of a rotating shaft. When the fan impeller 100 in the fan volute needs to be disassembled, the lower volute 101 can be turned downwards to expose the disassembly opening, and the fan impeller 100 can be disassembled from the disassembly opening. The fan volute is assembled by two upper and lower parts, and the upper and lower volutes form a complete involute cavity, which will not affect the formation and distribution of wind. When the cleaning fan 10 is installed on the threshing body 6, the lower volute can be removed, so that the fan impeller 100 can be removed from below, which is convenient for maintenance services. This structure avoids the defect of obstacles when the fan impeller 100 is drawn out from both sides, and can lower the whole threshing body 6 to reduce the center of gravity of the whole machine.

[0116] Preferably, air inlets 112 are provided at both ends of the fan volute, and an air outlet 113 is provided at the front side of the fan volute. Air volume adjusting plates 103 are respectively provided at the air inlets 112 at both ends of the fan volute, and the air intake volume can be adjusted through the air volume adjusting plates 103. The air volume adjusting plates 103 are arc-shaped plates and are movably assembled at the air inlets 112 of the fan volute through adjusting bolts 114. Specifically, adjusting holes 115 can be provided on the air volume adjusting plates 103, and the adjusting bolts 114 pass through the adjusting holes 115 and fix the air volume adjusting plates 103 on the upper volute 101. The number of the adjusting holes 115 can be one or more, and two can be selected in this embodiment. The number of the adjusting bolts 114 is selected according to the number of the adjusting holes 115.

[0117] The fan volute of this embodiment adopts a split structure of upper and lower volutes, and the lower volute 102 can be disassembled from the upper volute 101, providing an operation space for disassembling and repairing the fan impeller 100 without occupying the space at both ends of the fan volute. The fan blades 104 are supported and fixed on the web plate welding by the impeller support plate 105. The fan blades 104 can be separately disassembled from the connecting plate 109 of the web plate welding by disassembling the impeller support plate 105, and then taken out from the fan volute through the split fan volute structure. It is not necessary to clean the space at both ends of the fan 10, and it can be directly taken out from the opened fan volute, eliminating certain limitations in the current disassembly and assembly of the fan blades 104.

[0118] Embodiment 6

[0119] On the basis of Embodiment 2, the traveling system 3 includes two front drive wheels, a front drive bridge frame with both ends respectively drivingly connected to the two front drive wheels, two rear wheels, and a rear steering bridge frame disposed between the two rear wheels. The front and rear ends of the threshing body 6 are respectively fixedly mounted on the front drive bridge frame and the rear steering bridge frame, and the chopper 11 is mounted on the rear steering bridge frame.

[0120] The threshing body 6 is instead mounted on the front drive bridge frame and the rear steering bridge frame in place of the chassis. The front drive bridge frame can also adjust the elevation of the cutter bar 1 through the cutter bar lift cylinder 324, and the rear steering bridge frame can support the chopper 11.

[0121] Embodiment 7

[0122] As Figures 13 - 16 shown, on the basis of Embodiment 6, the front drive bridge frame includes a front bridge 320 and a gearbox 310. The left and right sides of the gearbox 310 are respectively drivingly connected to the left transmission case and the right transmission case through the left drive half shaft 312 and the right drive half shaft 311. The left and right side ends of the front bridge 320 are respectively fixedly connected to the left transmission case and the right transmission case. The gearbox 310 is located at a position slightly forward of the middle of the front bridge 320, and the middle of the front bridge 320 is bent upward to form an avoidance structure 321, and the avoidance structure 321 is located above the rear end of the gearbox 310. The cleaning fan 10 is located behind the gearbox 310 and between the two front drive wheels.

[0123] In this embodiment, the gearbox 310 is arranged at a position slightly forward of the center between the two front drive wheels and in front of the front bridge 320. Moreover, the front bridge 320 is provided with a corresponding avoidance structure 321 to avoid the front-mounted gearbox 310 without affecting the connection between the front bridge 320 and the threshing body 6. Such a structure can also move the position of the cleaning fan 10 forward and can be arranged between the two front drive wheels, saving the space for the front and rear structure arrangements, with a compact structure and more in line with the requirements of miniaturization.

[0124] In this embodiment, the structures of the transmission 310, the left drive half shaft 312, the right drive half shaft 311, the left transmission case, and the right transmission case are prior arts. Their transmission connections are achieved through transmission components inside the cases, such as gear structures. The fixed connection between the front bridge 320 and the left and right transmission cases means a fixed connection with the shells of the corresponding cases, such as by welding or through connection structures like bolts for assembly. The left and right transmission cases are also respectively connected to the two front drive wheels for transmitting the power transmitted by the transmission 310 to the two front drive wheels to enable the harvester to move. The specific transmission method for the front drive wheels is also a prior art and can adopt conventional transmission. The same applies to the subsequent description. The transmission connection refers to the rotational cooperation of the transmission components inside the case, and the fixed connection refers to the welding or assembly fixation of the case shell.

[0125] Based on the above technical solution, the transmission 310 is located in front of and below the avoidance structure 321.

[0126] For the front drive bridge, the prior art cannot be directly and simply adjusted. If the front bridge 320 remains in its existing structure as a straight shaft and the transmission 310 is directly adjusted from the rear side to be arranged below the front bridge 320, due to space limitations, the transmission 310 cannot maintain a sufficient ground clearance. During driving, when encountering obstacles or going up and down slopes, the transmission 310 will be knocked, resulting in the need for replacement. To meet the requirement of a certain ground clearance, the transmission 310 cannot be arranged directly in front of the front bridge 320 either. Firstly, there is a cross-bridge behind the cutting table 1 in the front. Secondly, the transmission 310 also needs to be correspondingly installed with a hydraulic motor 330. Arranging the transmission 310 directly in the front will make the installation space too small and the hydraulic motor 330 cannot be installed. Therefore, in this embodiment, the transmission 310 is arranged in front of and below the avoidance structure 321 of the front bridge 320, using the avoidance structure 321 of the front bridge 320 to raise the ground clearance of the transmission 310, avoiding the knocking phenomenon of the transmission 310, and enabling the rear end of the transmission 310 to pass through the area below the avoidance structure 321 of the front bridge 320 during installation, with appropriate front and rear positions.

[0127] Based on the above technical solution, it further includes a hydraulic motor 330. A hydraulic motor mounting seat 313 is fixedly installed on one side of the rear end of the transmission 310. The hydraulic motor 330 is fixedly installed on the hydraulic motor mounting seat 313, and the output shaft of the hydraulic motor 330 is in transmission connection with the transmission 310.

[0128] The transmission 310 is equipped with a suitable hydraulic motor 330 to achieve hydraulic stepless speed change. The position where the hydraulic motor 330 is set can be on one side of the rear end of the transmission 310 or between the two front drive wheels. The avoidance structure 321 of the front bridge 320 simultaneously avoids the transmission 310 and the hydraulic motor 330, making the structure more compact and the space utilization rate higher.

[0129] The hydraulic motor mounting seat 313 is fixed on the housing of the transmission 310. The housing of the hydraulic motor 330 is fixed on the hydraulic motor mounting seat 313, and the output shaft of the hydraulic motor 330 extends into the transmission 310 and is in transmission connection with the transmission components inside the transmission 310.

[0130] Preferably, the hydraulic motor 330 is located below and behind the avoidance structure 321. The hydraulic motor 330 can also be located below and in front of the transmission 310 together with the avoidance structure 321, or can be located directly below the avoidance structure 321. However, considering the overpass behind the cutting table 1 at the front upper part, it should not be too far forward, and it is more appropriate to be set below and behind. However, note that it cannot be too far back to avoid affecting the setting of the cleaning fan 10.

[0131] On the basis of the above technical solution, the front bridge 320 includes a left fixed shaft, a right fixed shaft and an avoidance shaft. The left fixed shaft and the right fixed shaft are arranged coaxially and at intervals, and the mutually remote ends are respectively fixedly connected to the left transmission case and the right transmission case (referring to welding or assembling and fixing with the housings of the left transmission case and the right transmission case, which has nothing to do with the internal transmission). The avoidance shaft is the avoidance structure 321, which is located above the left fixed shaft and the right fixed shaft, and the left and right ends of the avoidance shaft are respectively fixedly connected to the mutually close ends of the left fixed shaft and the right fixed shaft through corresponding connecting pieces.

[0132] The front bridge 320 can be designed into a π-shaped or a several-shaped structure. The avoidance shaft is horizontally arranged and parallel to the left fixed shaft and the right fixed shaft. The connecting pieces are vertically arranged. An avoidance space is formed below the avoidance shaft and between the two connecting pieces. The transmission 310, as well as the hydraulic motor mounting seat 313 and the hydraulic motor 330, can all be reasonably arranged by using this avoidance space, saving the front and rear space on the basis of not affecting the functions of each component.

[0133] The left fixed shaft, the right fixed shaft, the avoidance shaft and the connecting pieces that make up the front bridge 320 can be made of round steel, rectangular tubes or channel steel.

[0134] In addition, the front bridge 320 can also be other structures. For example, the middle part is an upwardly convex arc-shaped structure, that is, the two connecting pieces and the avoidance shaft are integrally formed into a circular arc-shaped structure. However, the arc-shaped structure is difficult to manufacture, inconvenient to assemble, and has poor effects. The more preferred solution is still the above solution where the connecting pieces are vertical and the avoidance shaft is horizontal.

[0135] On the basis of the above technical solution, fixed seats 322 for fixedly connecting with the threshing body 6 are respectively and fixedly installed on both sides of the front bridge 320.

[0136] The main function of the front bridge 320 is to cooperate with the rear bridge of the rear rotating bridge to fixedly install the threshing body 6. Since there is an avoidance structure 321 in the middle of the front bridge 320, in order to firmly fix the threshing body 6, it is more appropriate to set the fixed seats 322 on both sides of the front bridge 320.

[0137] In this embodiment, both sides of the front bridge 320 refer to the parts on both sides of the avoidance structure 321. Corresponding to the above specific structural solution, it refers to the left fixed shaft and the right fixed shaft.

[0138] Preferably, the specific structure of the fixed seat 322 is that the lower end is fixedly sleeved on the left fixed shaft or the right fixed shaft, and a connecting flat plate is horizontally fixed at the upper end. The four corners of the threshing body 6 respectively correspond to the fixed seats 322 on both sides of the front bridge 320 and the fixed seats on both sides of the rear bridge, and are assembled by welding or through connection structures such as bolts to achieve fixation.

[0139] On the basis of the above technical solution, the avoidance structure 321 is fixedly connected with the gearbox 310 through a fixing plate 323. In order to better fix the gearbox 310, the fixing plate 323 can be used to fix the gearbox 310 and the front bridge 320 together to prevent the components from shifting in position during driving.

[0140] Preferably, there are two fixing plates 323. One end of each of them is fixedly connected to both sides of the gearbox 310, and the other end is fixedly connected to the avoidance structure 321.

[0141] Preferably, the specific structure of the fixing plate 23 is that its front lower end extends to one side of the housing of the gearbox 310 and is fixedly connected to the side wall of the housing of the gearbox 310, and its rear upper end is fixedly sleeved on the avoidance structure 321.

[0142] On the basis of the above technical solution, two cutter bar lifting cylinders 324 are further included. The two cutter bar lifting cylinders 324 are respectively located above the left drive half shaft and the right drive half shaft. One end of each of them is rotatably connected to the lower ends on both sides of the front bridge 320, and the other end is used for rotatably connecting with the cross-bridge top plate at the rear of the cutter bar 1.

[0143] The original cutter bar lift cylinder 324 is an additional structure arranged below the front bridge 320 and extends obliquely forward and upward to be connected to the body of the cutter bar 1 or the cross bridge bottom plate, ensuring a suitable lifting angle. However, in the above solution, since the gearbox 310 is placed in the front, it will block the original cutter bar lift cylinder 324. Since there is a gearbox 310 and a hydraulic cylinder 330 below the front bridge 320, the rear connection point of the cutter bar lift cylinder 324 can no longer be located at a certain distance below the front bridge 320. It can only be arranged at the lower end of the front bridge 320 and pass above the left drive half shaft 312 and the right drive half shaft 311, so that it will not be affected by the front placement of the gearbox 310. However, since the rear connection point of the cutter bar lift cylinder 324 is higher than before, considering the lifting angle, its front connection point is not very suitable to be connected to the original body of the cutter bar 1 or the cross bridge bottom plate. It is better to connect it to the cross bridge top plate.

[0144] Embodiment 8

[0145] As Figure 19 shown, on the basis of Embodiment 7, the output shaft of the hydraulic motor 330 is also in transmission connection with the rear drive gearbox 331. The rear drive gearbox 331 is in transmission connection with the rear steering bridge through a coupling assembly 332. Both ends of the rear steering bridge are respectively connected to the two rear wheels.

[0146] In addition to front-wheel drive, this embodiment can also adopt four-wheel drive, with stronger traveling ability.

[0147] Embodiment 9

[0148] As Figure 17 and Figure 18 shown, on the basis of Embodiment 7, the transmission system 2 further includes an intermediate drive wheel one 203 and an intermediate drive wheel two 204. The engine 201 is in transmission connection with the intermediate drive wheel one 203 through the intermediate main transmission shaft 202. The intermediate drive wheel one 203 is in transmission connection with the power equipment below it, and can transmit power to the grain auger, the residue auger, the sieve box, etc. of the threshing and cleaning system 5 below. The intermediate drive wheel one 203 is also in transmission connection with the intermediate drive wheel two 204 located in front of it. The intermediate drive wheel two 204 is in transmission connection with the power equipment in front of it, and the power can be transmitted to the front cutter bar 1 and the cleaning fan 10, etc. through the intermediate drive wheel two.

[0149] The transmission system 2 of this embodiment has a compact structure. By arranging the intermediate main transmission shaft 202, the intermediate drive wheel one 203 and the intermediate drive wheel two 204 in this way, it is not necessary to transmit power downward blindly. The power can be dispersed to the front and rear sides by using the intermediate drive wheel one 203 and the intermediate drive wheel two 204, making the transmission structure close to the body of the machine, with a compact structure and a simple and effective transmission for the whole machine.

[0150] The first intermediate transmission wheel 203 in this embodiment is respectively in transmission connection with the grain auger transmission wheel 205 and the residue auger transmission wheel 206 located below it. The first intermediate transmission wheel 203 can be used to transmit power to the grain auger and the residue auger respectively.

[0151] Preferably, the grain auger transmission wheel 205 and the residue auger transmission wheel 206 are respectively located on the front and rear sides below the first intermediate transmission wheel 203. A sprocket or the first intermediate wheel can be coaxially arranged on the first intermediate transmission wheel 203, and then a belt or a chain is sleeved on the sprocket or the first intermediate wheel, as well as the grain auger transmission wheel 205 and the residue auger transmission wheel 206, forming a power transmission mechanism similar to a triangle as a whole. The sprocket or the first intermediate wheel transmits power to the grain auger transmission wheel 205 and the residue auger transmission wheel 206 through the chain or the belt, so that the power transmission is dispersed to the front and rear sides of the first intermediate transmission wheel 203.

[0152] Preferably, the first intermediate transmission wheel 203 is also in transmission connection with the sieve box transmission wheel 207 to transmit power to the sieve box. The sieve box transmission wheel 207 is located above the rear side of the residue auger transmission wheel 206.

[0153] Preferably, a sieve box reverse wheel 208 is connected to the transmission chain between the first intermediate transmission wheel 203 and the residue auger transmission wheel 206, and the sieve box reverse wheel 208 is in transmission connection with the sieve box transmission wheel 207. With the help of the transmission chain between the first intermediate transmission wheel 203 and the residue auger transmission wheel 206, the sieve box reverse wheel 208 is used to transmit power to the sieve box transmission wheel 207, without the need to add an additional intermediate transmission wheel, making the whole power transmission process compact and reliable.

[0154] Preferably, the second intermediate transmission wheel 204 is respectively in transmission connection with the cutting table transmission wheel 209 in front of it and the fan transmission wheel 210 below it to transmit power to the cutting table 1 and the cleaning fan 10. Among them, the second intermediate transmission wheel 204 can be arranged between the cutting table transmission wheel 209 and the first intermediate transmission wheel 203, so that the first intermediate transmission wheel 203, the second intermediate transmission wheel 204 and the cutting table transmission wheel 209 are approximately in a straight line, which is beneficial to the effective transmission of power. Then, the second intermediate transmission wheel 204 uses belt transmission to transmit power to the fan transmission wheel 210 below, making the power transmission on the front side stable and compact.

[0155] Preferably, the intermediate main transmission shaft 203 is also respectively in transmission connection with the roller transmission wheel 211 on its front lower side or rear lower side and the chopper intermediate wheel 212 on the threshing body 6 at the rear lower side.

[0156] In this embodiment, as Figure 20 and Figure 21As shown, the drum drive wheel 211 can be placed in the front or at the rear, respectively located at the front lower side or the rear lower side of the intermediate main drive shaft 203; preferably, it is located at the front lower side, so that the power can be dispersed to both the front and the rear sides, making it more balanced.

[0157] Among them, in this embodiment, the transmission connection is realized by a belt or a chain. Belt drive or chain drive can be selected according to needs. For example, the engine 201 is connected to the intermediate main drive shaft 202 by belt drive, the intermediate main drive shaft 202 is connected to the first intermediate drive wheel 203 by belt drive, the first intermediate drive wheel 203 is connected to the second intermediate drive wheel 204 by chain drive, and the first intermediate drive wheel 203 is connected to the grain auger drive wheel 205 on the grain auger and the residue auger drive wheel 206 on the residue auger by chain drive. The second intermediate drive wheel 204 is connected to the cutter bar drive wheel 209 on the cutting and conveying system by chain, and the second intermediate drive wheel 204 is connected to the fan drive wheel 210 on the fan by belt. Of course, belts can also be used between the drive wheels connected by chain drive, and chains can also be used between the drive wheels connected by belt drive.

[0158] Preferably, a tensioning wheel 213 is connected to the belt or the chain. The tensioning wheel 213 can be a pulley or a sprocket to tension the connected belt or chain.

[0159] The power transmission process of the transmission system 2 in this embodiment is as follows: First, the engine 201 transmits the power to the intermediate main drive shaft 202, and then the intermediate main drive shaft 202 transmits the power forward and downward to the drum drive wheel 211 to drive the drum to run, and backward and downward to the chopper intermediate wheel 212 on the threshing body to drive the chopper on the threshing body to run. The intermediate main drive shaft 202 also transmits the power downward to the first intermediate drive wheel 203, and uses the first intermediate drive wheel 203 for the first power distribution. The first intermediate drive wheel 203 distributes the power forward to the second intermediate drive wheel 204 and downward to the grain auger drive wheel 205 in the front lower side and the residue auger drive wheel 206 in the rear lower side, respectively driving the grain auger and the residue auger to run. A sieve box reversing wheel 207 is also provided on the transmission chain or belt between the first intermediate drive wheel 203 and the residue auger drive wheel 206, and the sieve box reversing wheel 207 is used to drive the sieve box drive wheel 207 to move, thereby driving the sieve box to run. The second intermediate drive wheel 204 then transmits the power forward to the cutter bar drive wheel 209 to drive the harvesting and conveying system to run, and forward and downward to the fan drive wheel 210 to drive the fan to run.

[0160] In addition, a fuel tank 8 for supplying fuel is installed at the rear side of the engine 201. The engine 201 is also drivingly connected to a gear pump. A hydraulic oil tank 9 communicating with the gear pump is installed at the rear side of the fuel tank 8 or between the grain tank 4 and the engine 201. The gear pump communicates with the hydraulic motor 330. The fuel tank 8 and the hydraulic oil tank 9, like the engine 201 and the grain tank 4, are installed on the threshing body 6, and their front and rear positions can be changed, and they are used to provide power for the engine 201 and the hydraulic motor 330 respectively.

[0161] Based on the above embodiments, as Figure 22 shown, the grain tank 4 is further installed with a hydraulic lifting and rotating grain unloading tube 401. The grain tank 4 needs to be equipped with a grain unloading tube. Preferably, the grain unloading tube is a hydraulic lifting and rotating grain unloading tube 401 for high-position grain unloading.

[0162] Based on the above embodiments, the roller 7 is equipped with a gear shift transmission or a stepless speed regulation drive.

[0163] Based on the above embodiments, for the cutting table 1, various miscellaneous grain (such as corn, soybean, sorghum, rapeseed, millet, quinoa, etc.) harvesting attachments can be configured.

[0164] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0165] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0166] In the present invention, unless otherwise clearly defined or limited, terms such as "install", "connect", "join", "fix", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the internal connection of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0167] In the present invention, unless otherwise clearly defined or limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0168] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0169] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A longitudinal axial-flow wheel-type combine harvester, comprising a cutter bar, a traveling system, a transmission system, a threshing and cleaning system, and a grain tank, characterized in that, The threshing and cleaning system includes a threshing body fixedly mounted on the traveling system and a cylinder, concave plate, cleaning fan, and sieve box provided on the threshing body. The header is communicated with the front side of the cylinder. The outside of the cylinder is sleeved with a concave plate, and a straw discharge port is provided at the rear side thereof. A chopper is provided at the straw discharge port. The sieve box is arranged below the cylinder, and the cleaning fan is located at the front end of the sieve box. The threshing body forms a structural framework for installing other components. The header is mounted in front of the threshing body and is communicated with the threshing and cleaning system. The grain tank is fixedly mounted above the threshing body and is communicated with the threshing and cleaning system. The transmission system includes an engine and an intermediate main transmission shaft. The engine is fixedly mounted above the threshing body and is located behind the grain tank. The intermediate main transmission shaft is located between the grain tank and the engine. The engine is in transmission connection with the header and the threshing and cleaning system through the intermediate main transmission shaft.

2. The axial-flow wheel type grain combine harvester according to claim 1, characterized in that, The threshing and cleaning system includes a grain auger and a waste auger. The front side of the bottom of the sieve box is communicated with the grain auger, and the grain auger is communicated with the grain tank. The rear side of the bottom of the sieve box is communicated with the waste auger, and the waste auger is communicated to the front side of the cylinder.

3. The axial-flow wheeled combine harvester according to claim 1, wherein, The threshing body includes a first frame, a second frame, a third frame, and a fourth frame for supporting the cylinder. The first frame and the second frame are arranged parallel to each other. The two ends of the third frame are correspondingly connected to one end of the first frame and one end of the second frame. The fourth frame is inclined and arranged between the first frame and the second frame. A plurality of maintenance holes corresponding to the fourth frame are respectively provided on the first frame and the second frame.

4. The axial-flow wheeled grain combine harvester according to claim 1, characterized in that, The cylinder includes a cylinder shaft, at least one first cylinder section, and at least one second cylinder section. The first cylinder section and the second cylinder section are detachably sleeved on the cylinder shaft, and the first cylinder section is connected to the second cylinder section.

5. The axial-flow wheeled grain combine harvester according to claim 1, characterized in that, The traveling system includes two front drive wheels, a front drive bridge frame with both ends respectively in transmission connection with the two front drive wheels, two rear wheels, and a rear steering bridge frame arranged between the two rear wheels. The front and rear ends of the threshing body are respectively fixedly mounted on the front drive bridge frame and the rear steering bridge frame. The chopper is mounted on the rear steering bridge frame.

6. The axial-flow wheel type combine harvester according to claim 5, wherein The front drive bridge frame includes a front bridge and a gearbox. The left and right sides of the gearbox are respectively in transmission connection with a left transmission box and a right transmission box through a left drive half shaft and a right drive half shaft. The left transmission box and the right transmission box are respectively in transmission connection with the two front drive wheels. The left and right side ends of the front bridge are respectively fixedly connected to the left transmission box and the right transmission box. The gearbox is located at a position slightly forward of the middle of the front bridge, and the middle of the front bridge is bent upward to form an avoidance structure, and the avoidance structure is located above the rear end of the gearbox.

7. The axial-flow wheeled grain combine harvester according to claim 6, wherein, The front drive bridge further includes a hydraulic motor. A hydraulic motor mounting seat is fixedly installed on one side of the rear end of the gearbox. The hydraulic motor is fixedly installed on the hydraulic motor mounting seat. The output shaft of the hydraulic motor is in transmission connection with the gearbox. The hydraulic motor is located at the rear lower side of the avoidance structure. The cleaning fan is located behind the gearbox and between the two front drive wheels. The transmission system further includes an intermediate transmission wheel 1 and an intermediate transmission wheel 2. The engine is in transmission connection with the intermediate transmission wheel 1 through the intermediate main transmission shaft. The intermediate transmission wheel 1 is in transmission connection with the grain auger transmission wheel, the straw auger transmission wheel and the sieve box transmission wheel below it. The intermediate transmission wheel 1 is also in transmission connection with the intermediate transmission wheel 2 on its left side. The intermediate transmission wheel 2 is in transmission connection with the cutting table transmission wheel in front of it. The intermediate main transmission shaft is also respectively in transmission connection with the roller transmission wheel on its front lower side or rear lower side and the chopper intermediate wheel on its rear lower side.

8. The axial-flow wheel type combine harvester according to claim 7, characterized in that, The output shaft of the hydraulic motor is also in transmission connection with the rear drive gearbox. The rear drive gearbox is in transmission connection with the rear steering bridge through a coupling assembly. The two ends of the rear steering bridge are respectively connected to the two rear wheels.

9. The axial-flow wheel type combine harvester according to claim 7, wherein, The intermediate transmission wheel 2 is in transmission connection with the fan transmission wheel below it. A fuel tank for supplying fuel is installed at the rear side of the engine. The engine is also in transmission connection with a gear pump. A hydraulic oil tank communicated with the gear pump is installed at the rear side of the fuel tank or between the grain tank and the engine. The gear pump is communicated with the hydraulic motor.

10. A longitudinal axial-flow wheel-type combine harvester according to any one of claims 1 to 9, characterized in that, The grain tank is also equipped with a hydraulic lift rotary grain unloading tube.

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