Abrégé

A chopper assembly, comprising a straw discharge channel and a straw inlet and straw discharge port (10p) that are located at both ends of the straw discharge channel; a movable cutter roller (1r), which is disposed inside of the straw discharge channel; a plurality of movable blades (2r), which are distributed in a spiral arrangement and are detachably mounted on the movable cutter roller (1r), each of the movable blades (2r) being parallel to the cross section of the movable cutter roller (1r); a fixed cutter holder (3r), which is provided inside of the straw discharge channel on the side of the movable cutter roller (1r) proximal to the straw inlet; a plurality of fixed blades (4r), which are disposed on the fixed cutter base (3r) at equal intervals in the same direction; and a scattering structure, which is disposed on the straw discharge port (10p) and is suited to evenly scattering crushed straw. When the movable cutter roller (1r) is driven to rotate to any position, it can be ensured that all of the movable blades (2R) are able to pass through the gaps between the fixed blades (4r), that is, a cutting state can consistently be maintained between the movable blades (2r) and the fixed blades (4r), and the chopping efficiency is improved under the usual rotational speed of the movable cutter roller (1r), thus reducing the power output costs due to increasing rotational speed. Meanwhile, straw can be prevented, by means of the scattering structure, from accumulating in farmland.

Classes IPC  ?

• A01D 43/08 - Faucheuses combinées avec des appareils permettant d'effectuer des opérations supplémentaires pendant le fauchage avec des moyens pour hacher la récolte fauchée
• A01F 29/02 - Appareils de coupe spécialement adaptés à la paille, au foin ou aux produits similaires comportant des couteaux rotatifs dont les arêtes tranchantes sont dans un plan perpendiculaire à leur axe de rotation

Abrégé

A chopper, comprising a left side wall (10r) and a right side wall (11r); a movable cutter roller (1r) provided between the left side wall (10r) and the right side wall (11r); multiple movable blades (2r) spirally arranged and distributed and detachably mounted on the movable cutter roller (1r), any movable blade (2r) being parallel to the cross section of the movable cutter roller (1r); a fixed cutter holder (3r) provided at an obliquely downward portion of the movable cutter roller (1r); and multiple fixed blades (4r) uniformly provided on the fixed cutter holder (3r) at intervals in the same direction; when the movable cutter roller (1r) is driven to rotate, the movable cutter roller (1r) driving the movable blades (2r) to rotate to pass through gaps among the fixed blades (4r). When the movable cutter roller (1r) is located at any rotating position, it can be ensured that all the movable blades (2r) can pass through the gaps among the fixed blades (4r), i.e., the cutting state between the movable blades (2r) and the fixed blades (4r) can be maintained all the time, and under the normal rotating speed of the movable cutter roller (1r), the efficiency of chopping is still improved, and the power output cost caused by increasing the rotating speed is reduced.

Classes IPC  ?

• A01F 29/02 - Appareils de coupe spécialement adaptés à la paille, au foin ou aux produits similaires comportant des couteaux rotatifs dont les arêtes tranchantes sont dans un plan perpendiculaire à leur axe de rotation
• A01D 43/08 - Faucheuses combinées avec des appareils permettant d'effectuer des opérations supplémentaires pendant le fauchage avec des moyens pour hacher la récolte fauchée
• A01F 29/09 - Appareils de coupe spécialement adaptés à la paille, au foin ou aux produits similaires Parties constitutives

Abrégé

A screening system, comprising: a vibrating screen (H), which is provided with an upper screen area and a lower screen (8d) area, wherein a screen frame (1h) of the vibrating screen (H) is of a funnel-shaped structure as a whole, a corrugated plate (6d), a lifting structure, at least one section of chaffer (7d) and a tail screen (2h) are sequentially arranged in the upper screen area in the moving direction of crops, and a lower screen (8d) is arranged in the lower screen (8d) area and corresponds to the chaffer (7d); a front sealing structure, which is fixed to the front end of the corrugated plate (6d) in a sealed manner; a grain separating structure, which is arranged at the tail end of the lower screen (8d) and arranged between a grain collecting area (M) and a residue collecting area (N) in a crossing manner; and a driving structure, which is fixed to a rack (1) and suitable for driving the vibrating screen (H) to vibrate in a reciprocating manner. By means of the screening system, grains can be collected more completely and more cleanly, and the screening efficiency is improved. Further provided is a combine harvester comprising the screening system.

Classes IPC  ?

• A01F 12/44 - Nettoyeurs de grainSéparateurs des grains
• A01F 12/00 - Pièces ou parties constitutives des dispositifs de battage
• A01D 41/02 - Moissonneuses-batteuses automotrices
• A01D 41/12 - Parties constitutives des moissonneuses-batteuses

Abrégé

Provided is a combine harvester cab. The combine harvester cab comprises: a cab body (1t) provided with a cabin door (10t) and a cabin capable of being closed; a main body frame (2t) fixed on a bottom plate (11t) of the cab body (1t); and a transparent cabin plate (3t) arranged on the main body frame (2t) in a surrounding manner in the circumferential direction of the main body frame (2t), a ceiling (12t) being mounted at the top of the main body frame (2t). The transparent cabin plate (3t) positioned on the side of the cabin that faces a header is obliquely arranged from the bottom plate (11t) to the header; and the cabin is internally provided with a riding area, and a left control board (4t) and a right control board (5t) which are positioned on two sides of the riding area. According to the cab, the cabin is divided into the control boards positioned on the left side and the right side of the riding area, the space of the front of the cabin is thus expanded, such that a driver can stretch out better, the front of the interior of the cabin is not shielded, and the visual field is wide; in addition, the front transparent cabin plate of the cabin is inclined to the header, such that the visual field is further expanded, thereby facilitating observation of the environment and the harvesting condition below the cabin.

Classes IPC  ?

• B62D 33/06 - Cabines de conducteur
• A01D 41/12 - Parties constitutives des moissonneuses-batteuses
• A01D 67/00 - Châssis ou caisses spécialement adaptés aux moissonneuses ou aux faucheusesMécanismes de réglage de la caissePlates-formes

Abrégé

A concave grate structure and a combine harvester. The radian of the cross section of concave grates (2b, 3b) is 180 degrees. Connecting beams (5b) at two ends of each concave grate are horizontally arranged, and are in lap joint with the horizontal mounting surfaces of assembling beams (11b) in an attached manner. During mounting, the connecting beams (5b) are directly fixed to the assembling beams (11b) by means of locking assemblies. Palm holding, welding and fixing are not needed, the structure is simple, the mounting operation is easy and feasible, and manpower and material resources are saved. Limiting adjusting structures are arranged at notches (10b) formed between outer screen surfaces of the two concave grates (2b, 3b) and a transition grate (7b), and the limiting adjusting structures are detachably fixed to the concave grates (2b, 3b) at the two sides. When the limiting adjusting structures are not arranged, parts of crops only pass through the first concave grate (2b) and then fall into a lower vibrating screen from the notches (10b) to directly enter the subsequent process, and when the limiting adjusting structures are arranged, the crops enter the second concave grate (3b) from the first concave grate (2b) by means of the transition grate (7b) and is in a complete n-shaped trend, the conveying path is longer, and the threshing and screening effect is better.

Classes IPC  ?

• A01F 12/44 - Nettoyeurs de grainSéparateurs des grains
• A01D 41/02 - Moissonneuses-batteuses automotrices
• A01D 41/12 - Parties constitutives des moissonneuses-batteuses

Abrégé

A concave plate sieve structure, comprising: a frame (1); two concave plate sieves, the inner sieve surfaces of which are arc-shaped, axially provided in parallel and spaced apart and fixed on the frame (1) in the horizontal direction, a gap being formed between the inner sieve surface of any of the concave plate sieves and a corresponding roller, one end of the two concave plate sieves located on the same side of the frame being provided with a transition opening (6b) in the radial direction; the two transition openings (6b) are directly opposite to each other and are in communication with each other; a transition plate sieve (7b), laid between the two concave plate sieves and connecting the two transition openings (6b); and a feeding opening (21b) for crops is arranged at the other end of the one concave plate sieve located opposite the transition opening (6b) and away from the transition opening (6b). According to the concave plate sieve structure, the layout of the two concave plate sieves on the harvester frame is compact, and the path for threshing and sieving of crops passing through the concave plate sieves can be prolonged, and the overall maneuverability and threshing effect of the harvester are greatly improved. A combine harvester comprising the concave plate sieve structure is provided.

Classes IPC  ?

• A01F 12/44 - Nettoyeurs de grainSéparateurs des grains
• A01D 41/02 - Moissonneuses-batteuses automotrices
• A01D 41/12 - Parties constitutives des moissonneuses-batteuses

Abrégé

Provided is a combine harvester. A feeding port is provided in the middle of a frame (2), so that a connecting port between a crop conveying structure communicating with the frame and a header (41) is located in the position of the header (41) that is close to the middle, and crops are fed into the connecting port from two sides of the header (41) more uniformly; moreover, a scattering structure is arranged close to a grain storage assembly, and the Chinese character "几"-shaped threshing direction of a double-spiral threshing conveying system is used, such that the crops enter the middle of the front end of the harvester and are scattered out of the middle of the tail end of the harvester, and the stability of the gravity center of the combine harvester is ensured. A cleaning transmission system is arranged on an outer side of a threshing system, centralized transmission is realized, and mounting and debugging are facilitated. The whole combine harvester has a compact structure, occupies a small space, is kept stable all the time in idle operation and harvesting operation processes, has high maneuverability and has significant operation efficiency.

Classes IPC  ?

• A01D 41/02 - Moissonneuses-batteuses automotrices
• A01F 12/20 - Cylindres de batteuse à battes
• A01F 12/44 - Nettoyeurs de grainSéparateurs des grains
• A01F 12/46 - Transporteurs mécaniques de grain
• A01F 12/00 - Pièces ou parties constitutives des dispositifs de battage
• A01D 69/06 - Engrenages

Abrégé

Provided are an anti-winding ring and a structure applying same. The anti-winding ring comprises at least two ring plates and at least two clamping plates, wherein the ring plates are of a circular-arc-shaped structure, and all the ring plates are connected end to end to define a circular-ring-shaped isolation area; and the at least two clamping plates are fixed on one of the two ring plates connected to each other, and slots are formed between the clamping plates and the ring plate; and the other ring plate is suitable for being inserted and fixed in the slots. The circular-ring-shaped isolation area is defined by means of the ring plates, is suitable for being fixed on a driving rotating shaft in a sleeved manner and is blocked in a gap, thereby avoiding weeds or straw from being wound around the driving rotating shaft.

Classes IPC  ?

• A01D 75/18 - Dispositifs de sécurité pour certaines parties des machines
• A01D 41/12 - Parties constitutives des moissonneuses-batteuses
• A01B 33/12 - Disposition des outilsÉcrans de protection des outils

Abrégé

A shaker screen and a screening system, the vibration screen comprising a mounting member and a plurality of screen teeth (2d); the mounting member is provided with assembly surfaces (12d) and mounting surfaces (11d) which face away from the assembly surfaces (12d) and are provided at an acute angle to the assembly surfaces (12d); the screen teeth extend in an opening direction of the angle formed between the assembly surfaces (12d) and the mounting surfaces (11d), and one ends of the screen teeth are fixed ends which are fixed on the mounting surfaces (11d) at intervals, and the other ends thereof are free ends which are provided in a suspended manner; and when the vibration screen as a whole vibrates in a reciprocating manner, the crop slips from a corrugated board (6d) onto the shaker screen, is shaken and raised by the suspended screen teeth (2d), and then falls onto a scaled screen (7d), achieving dispersing and loosening of the crop. In addition, the shaker screen can be provided on the corrugated board (6d) in different inclination angles according to different requirements, so that the space is fully utilized, and the screening system has a more compact structure while ensuring the screening effect.

Classes IPC  ?

• A01D 41/02 - Moissonneuses-batteuses automotrices
• A01F 12/32 - Séparateurs de paille à tamis ou cribles

Abrégé

A harvester fan, comprising a fan housing (3f), a fan structure and a fan driver, wherein the fan structure is mounted in a cylindrical mounting cavity of the fan housing; two ends of the fan housing in an axial direction are respectively provided with a first air inlet (31f) in communication with the outside; a side wall of the fan housing (3f) is provided with an air outlet (33f) in the axial direction of the fan housing; the width of the air outlet (33f) is the same as that of the mounting cavity; the side wall of the fan housing (3f) that is opposite the air outlet (33f) is provided with a second air inlet (32f) in a circumferential direction of the fan housing; and in the axial direction of the fan housing (3f), the second air inlet (32f) is located in the middle of the fan housing (3f). The middle of the fan housing (3f) is provided with the second air inlet (32f), such that the second air inlet and the first air inlets (31f) at the two ends of the fan housing (3f) form three air inlets that are evenly distributed in the fan housing, thus making air intake more uniform while providing a sufficient air intake amount.

Classes IPC  ?

• A01F 12/44 - Nettoyeurs de grainSéparateurs des grains
• F04D 29/28 - Rotors spécialement adaptés aux fluides compressibles pour pompes centrifuges ou hélicocentrifuges

Abrégé

A composite adjustment structure and a combine harvester. Stirring pieces on cylinders are arranged to be able to rock, and after rocking to a suitable angle, the stirring pieces can be locked on the cylinders in order to adjust the distance between the stirring pieces and the inner surfaces of concave grates, and thus at the same cylinder rotation speed, reduce the occurrence of broken rice caused by too small of a gap. Meanwhile, in order to avoid the problem of threshing not being clean due to increasing the gap between the stirring pieces and the concave grates, a detachable limiting adjustment structure is provided at the position of an opening (10b) between the outer surfaces of the two concave grates and a transition grate. By means of the limiting adjustment structure, a transition opening (6b) is partially blocked, altering the size of the passage communicating a first cylinder (2a) with a second cylinder (3a), and indirectly lengthening the threshing path. In addition, the passage becomes smaller, and crop volume passing through per unit time thus also becomes smaller, causing the threshing time of a crop in the cylinders to be further lengthened, making threshing more complete and cleaner.

Classes IPC  ?

• A01F 12/18 - Mécanismes de battage
• A01F 12/20 - Cylindres de batteuse à battes
• A01F 12/44 - Nettoyeurs de grainSéparateurs des grains
• A01F 12/52 - Dispositions pour le renvoi du grain non battu à la batteuse
• A01D 41/02 - Moissonneuses-batteuses automotrices

Abrégé

A double-spiral threshing and conveying system, comprising: two concave plate screens, which are provided in parallel and spaced apart in a horizontal direction on a rack (1); the inner screen surface of either of the concave plate screens is arc-shaped; the ends of the two concave plate screens located on the same side of the rack (1) are each provided with a transition opening (6b) in a radial direction; two transition openings (6b) directly face each other and communicate with each other; a transition plate screen (7b) is laid between the two concave plate screens and connects the two transition openings (6b); a feeding port (21b) for crops is provided on the other end of one of the concave plate screens which is located opposite the transition port (6b) and away from the transition port (6b); two cylinder covers are in one-to-one correspondence with the concave plate screens and are covered thereon, and a hollow cylindrical installation cavity is formed between each cylinder cover and the corresponding concave plate screen; a plurality of guiding members are arranged at intervals on the wall surface of either of the cylinder covers facing the installation cavity, and are suitable for guiding the crops entering the installation cavity to move directionally around an axis; guiding directions of the guiding members in the two cylinder covers are opposite; two rollers are coaxially and rotatably provided in the installation cavities respectively; each roller is arranged with a gap between it and the corresponding inner screen surface and a gap between it and each of the end faces of the guiding members respectively; the working area of each roller has the same length as the corresponding concave plate screen; and the two concave plate screens are of the same length. The system enables the structure on the rack to be more compact, and as the two threshing working areas are of the same length, a sufficient length of a threshing path can also be ensured, thereby fully ensuring threshing effect while ensuring the overall maneuverability of the harvester. A combine harvester comprises the double-spiral threshing and conveying system.

Classes IPC  ?

• A01F 12/44 - Nettoyeurs de grainSéparateurs des grains
• A01F 12/46 - Transporteurs mécaniques de grain
• A01F 12/26 - Contrebatteurs en plusieurs pièces
• A01D 41/02 - Moissonneuses-batteuses automotrices

Abrégé

An integrated assembly structure of concave plate sieves and cylindrical covers, the radian of the cross sections of concave plate sieves (2b, 3b) and cylindrical covers (2c, 3c) are 180 degrees; and the concave plate sieves each comprise an arc-shaped sieve surface and connecting beams (5b) that are horizontally disposed at both ends of each sieve surface, the connecting beams being suitable for being overlapped on assembly beams (11b) of a rack (1). The cylindrical covers each comprise a square mounting frame (22c) and an arc-shaped cover body (21c) which is hinged to a side frame edge of the mounting frame, the mounting frames being suitable for being attached surface to surface to and overlapping the assembly beams. The connecting beams and mounting frames are horizontally disposed and can be attached and overlapped together on to horizontal mounting surfaces of the assembly beams on the rack, and during installation, the concave plate sieves only need to be placed between two assembly beams, such that the connecting beams are overlapped on the assembly beams; the cylindrical covers are overlapped and fastened onto the connecting beams, and the mounting frames and connecting beams are integrally fixed onto the assembly beams by means of a locking assembly; and fixing by handheld welding is not required, the structure is simple, installation operations are simple and easy, and human and material resources can be saved. Further disclosed is a combine harvester comprising the integrated assembly structure of concave plate sieves and cylindrical covers.

Classes IPC  ?

• A01F 12/44 - Nettoyeurs de grainSéparateurs des grains
• A01D 41/00 - Moissonneuses-batteuses, c.-à-d. moissonneuses ou faucheuses combinées avec des dispositifs de battage
• A01D 41/12 - Parties constitutives des moissonneuses-batteuses

Abrégé

An air supply system of a harvester, comprising a fan, an air supply channel, a tail cover (2j), and a baffle (3j). In a vertical direction, the height of a discharge port (5j) is higher than that of an air outlet (33f); the air outlet (33f) is obliquely provided towards the discharge port (5j); a fan housing (3f), a grain bottom shell (5e), an impurity bottom shell (6e), and a screen frame (1h) incline towards the discharge port (5j) from one side of the air outlet (33f) and are gradually heightened; two ends of the fan housing (3f) are respectively provided with first air inlets (31f) communicated with the outside; a second air inlet (32f) is formed in the side wall of the middle of the fan housing (3f) opposite to the air outlet (33f) in the circumferential direction of the fan housing. The air supply system is compact and stable in structure, sufficient in air volume, and free of air return influence, such that the winnowing efficiency is greatly improved.

Classes IPC  ?

• A01F 12/48 - Conduits à air ou ventilateurs pour le grain
• A01F 12/44 - Nettoyeurs de grainSéparateurs des grains

Abrégé

A harvester fan structure, comprising a fan shaft (1i), a plurality of support units, and a plurality of fan blades (2i). The support units are uniformly fixed on the fan shaft at intervals; the fan blades are fixed on the support units; each support unit comprises a plurality of fan blade supports (3i) which are sequentially bolted, fixed, and locked on the fan shaft in the circumferential direction of the fan shaft; the fan blades are respectively bolted and fixed on the fan blade supports; and all the fan blade supports come together to form a polygon, and the polygon is externally tangent to the circle of the cross section of the fan shaft. The plurality of fan blade supports are fixed around the fan shaft in a bolted manner, such that the structure is simple and stable, and components and parts can be disassembled conveniently and quickly and are easy to be replaced.

Classes IPC  ?

• F04D 29/30 - Aubes
• F04D 29/26 - Rotors spécialement adaptés aux fluides compressibles
• F04D 29/62 - MontageAssemblageDémontage des pompes radiales ou hélicocentrifuges
• A01D 41/12 - Parties constitutives des moissonneuses-batteuses
• A01F 12/44 - Nettoyeurs de grainSéparateurs des grains

Abrégé

A front sealing structure for a vibrating screen (H). A front material plate (2f) for guiding grains to slide down is provided below a threshing cylinder of a harvester; a sealing member is fixedly provided between the front material plate (2f) and a fan housing (3f) below the front material plate (2f); the width of the sealing member is not less than the width of the screen surface of the vibrating screen (H) between the front material plate (2f) and the fan housing (3f); and two opposite sides in the width direction of the sealing member and the left and right side walls of a rack (1) are correspondingly arranged at intervals, respectively.

Classes IPC  ?

• A01F 12/44 - Nettoyeurs de grainSéparateurs des grains
• A01F 12/00 - Pièces ou parties constitutives des dispositifs de battage

Abrégé

A vibrating screen (H) drive for a harvester. The vibrating screen drive comprises two bearing seats (2g), a transmission shaft (3g), two eccentric bearings (4g) and a drive wheel (5g). The two bearing seats (2g) are respectively correspondingly fixed to side wall faces of two symmetrical supporting beams at a tail end of a rack, an outer spherical bearing is mounted in any bearing seat (2g), and two ends of the transmission shaft (3g) are fixed in the outer spherical bearing, respectively. The two eccentric bearings are respectively fixed at the two ends of the transmission shaft (3g) in a mirror image manner, one end of a vibrating screen is fixed on the two eccentric bearings (4g), the other end of the vibrating screen is arranged on the rack by means of a reciprocating guide structure, and the drive wheel (5g) is fixed at one end of the transmission shaft (3g) and is suitable for being driven by a driver of a harvester to drive the transmission shaft (3g) to rotate. The bearing seats (2g) are directly fixed on the supporting beams of the rack, transition connection is avoided, and the rack directly bears the gravity of the vibrating screen and an inertia acting force of reciprocating motion of the vibrating screen, such that vibration of the vibrating screen is more stable.

Classes IPC  ?

• A01D 69/00 - Mécanismes d'entraînement ou éléments de ceux-ci pour moissonneuses ou faucheuses

Abrégé

A grain separation structure and a screening system. The grain separation structure comprises an isolation element and a front curtain, which are arranged between a grain collection area (M) and a residue collection area (N), and are fixed on a housing of a vibrating screen; the isolation surface of the isolation element extends from one side of the grain collection area (M) to above the residue collection area, the front curtain (3e) extends in the same direction as the isolation surface, and has one end fixed on the isolation element and the other end placed on a grain bottom housing (5e) in the grain collection area (M), so as to block the opening formed between the isolation element and the grain bottom housing (5e) and connecting the grain collection area (M) and the residue collection area (N), so that the air blown by a fan travels along the front curtain (3e) and the isolation element and is blown out from the opening formed between the isolation element and a lower screen (8e), avoiding the situation in which return air carrying residue enters the grain collection area (M) and contaminates grains in a granary, and also increasing the air volume at the end of the lower screen (8e) to improve the air selection effect.

Classes IPC  ?

• A01F 12/44 - Nettoyeurs de grainSéparateurs des grains
• A01D 41/00 - Moissonneuses-batteuses, c.-à-d. moissonneuses ou faucheuses combinées avec des dispositifs de battage

Abrégé

A dual-roller structure of a combine harvester, said structure comprising a frame (1); two rollers are rotatably mounted on the frame by means of respective roller shafts (4a), the axes of the two rollers are parallel to one another and the rollers are distributed at an interval in the direction in which crops are conveyed; a plurality of prodding pieces are disposed at intervals on each of the rollers along the roller shaft (4a), areas of operation are formed between two prodding pieces located at both end parts of the rollers, and the widths of the areas of operation of the two rollers are the same. A crop first enters a first roller from a material input port, is rotated and threshed by means of the first roller and is spirally conveyed into a second roller, the crop is then rotated and threshed by the second roller, and threshed straw is finally discharged from a straw discharge area. The stroke length of the crop in the dual-roller structure is the sum of the lengths of the two rollers, thus the threshing stroke is long, the threshing effect is good, and unnecessary space is not taken up so that a combine harvester has a compact structure.

Classes IPC  ?

• A01F 12/18 - Mécanismes de battage
• A01D 41/12 - Parties constitutives des moissonneuses-batteuses

Abrégé

A cleaning transmission system, comprising an output belt wheel (1s) in transmission connection with an engine, the output belt wheel (1s) outputting in three paths of transmission, which paths are distributed on a wall face of the same side of a frame (1), wherein the first path of transmission comprises the output belt wheel (1s), a first threshing belt wheel (2s) and a second threshing belt wheel (3s); the second path of transmission comprises the output belt wheel (1s) and a chopper belt wheel (4s); and the third path of transmission comprises the output belt wheel (1s), a fan belt wheel (51s), a grain belt wheel (52s), a residue belt wheel (53s) and a screening belt wheel (6s), all the belt wheels being in transmission connection. A combine harvester is further disclosed. Power inputs of a threshing mechanism, a chopping mechanism, a winnowing mechanism, a grain warehousing mechanism, a residue re-threshing mechanism and a screening mechanism are all arranged on the same side face of the frame, such that the transmission system of the whole machine is compact in terms of structure. In addition, the power inputs of all the mechanisms are all directly provided by the output belt wheel, so as to prevent transmission loss caused by intermediate transmission, thereby improving the transmission efficiency of the whole machine and prolonging the service life.

Classes IPC  ?

• A01D 69/06 - Engrenages
• A01F 12/44 - Nettoyeurs de grainSéparateurs des grains

Abrégé

Adjustable concave plate sieves and a combine harvester, A limiting and adjusting structure is disposed at a notch (10b) formed between outer sieve surfaces of two concave plate sieves and a transition plate sieve (7b), and the limiting and adjusting structure is detachably fixed the concave plate sieves on both sides. When the limiting and adjusting structure is not provided, some crops fall into a vibrating sieve below from the notch (10b) after only passing through a first concave plate sieve (2b) and directly enters subsequent processes; and when the limiting and adjusting structure is provided, crops pass through the transition plate sieve (7b) from the first concave plate sieve (2b) to enter a second concave plate sieve (3b) by means of a complete "几" shaped direction.

Classes IPC  ?

• A01F 12/44 - Nettoyeurs de grainSéparateurs des grains
• A01D 41/02 - Moissonneuses-batteuses automotrices
• A01D 41/12 - Parties constitutives des moissonneuses-batteuses

Abrégé

A spreading structure and a chopping device, the spreading structure comprising a grass spreading plate (1p) and a plurality of first grass guiding plates (2p); the grass spreading plate (1p) is fixed to an upper edge of a grass discharge opening (10p), the surface of the grass spreading plate (1p) gradually expands from the grass discharge opening (10p) towards the end away from the grass discharge opening (10p), and the plurality of first grass guiding plates (2p) are provided on the lower surface of the grass spreading plate (1p) at intervals in a direction parallel to the edge of the grass discharge opening (10p), and the first grass guiding plates (2p) are perpendicular to the grass spreading plate (1p) and are provided at an angle to a center line of the grass spreading plate (1p). The chopped cereal grass discharged from the grass discharge opening (10p) is guided and spread by the first grass guiding plates (2p), so as to avoid accumulation of the chopped cereal grass in a line in the field, increasing the spreading efficiency.

Classes IPC  ?

• A01D 41/12 - Parties constitutives des moissonneuses-batteuses
• A01F 29/09 - Appareils de coupe spécialement adaptés à la paille, au foin ou aux produits similaires Parties constitutives