A chopper assembly

Abstract

The present invention provides a chopper assembly, including a grass discharge channel and a grass inlet and a grass discharge port located at both ends of the grass discharge channel, and a movable blade roller is arranged in the grass discharge channel. A plurality of movable blades are arranged and distributed in a spiral shape and are detachably mounted on the movable blade roller, any movable blade is parallel to the cross section of the movable blade roller, and a fixed blade seat is arranged in the grass discharge channel on the side of the movable blade roller close to the grass inlet. A plurality of fixed blades are evenly spaced and arranged on the fixed blade seat in the same direction. When the movable blade roller is driven to rotate to any position, it can be ensured that all movable blades can pass through the gaps between the fixed blades, that is, the cutting state between the movable blades and the fixed blades can be always maintained. At the normal rotation speed of the movable blade roller, the chopping efficiency is still improved, and the power output cost caused by increasing the rotation speed is reduced. A spreading structure is arranged on the grass discharge port, which is suitable for evenly spreading the crushed straw. The chopped straw is evenly spread in the farmland through the spreading structure to avoid the accumulation of straw in the farmland, reduce labor and improve efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of crushing devices, and in particular to a chopper assembly. Background Art

[0002] Chopping up the harvested straw and spreading it back into the field is an important environmentally friendly measure that can prevent the burning of straw from polluting the air and can serve as an organic fertilizer to fertilize the land. To achieve this goal, existing combine harvesters are equipped with a crushing device.

[0003] If the straw left after the combine harvester harvests crops is too long, farmers usually burn the straw to clean the fields. Burning the straw produces a large amount of smoke and dust, which seriously pollutes the air. The carbon dioxide emitted from the combustion increases the carbon dioxide content in the atmosphere, exacerbating the greenhouse effect, which runs counter to the environmental protection requirement of reducing carbon dioxide emissions in the atmosphere.

[0004] In order to avoid the above situation, the existing combine harvesters use low stubble harvesting to reduce the height of the straw left in the farmland, making it impossible to burn it. At the same time, the straw cut by the combine harvester is long and must be fully chopped by the combine harvester and evenly spread on the farmland. When the tractor turns the soil, the straw and broken grass left in the farmland are turned into the soil as fertilizer, so as to fundamentally prevent the burning of straw. The existing combine harvester grass cutter adopts a group of four blades arranged in a cross shape along the radial direction of the moving knife roller. The blade combination is arranged in six rows at intervals on the axial direction of the moving knife roller. Each group of blades has a total of 4 blades, totaling 24 blades. The grass cutting performance is improved by increasing the main shaft speed of the grass cutter. Although this method achieves the grass cutting effect, it consumes a large part of the power of the combine harvester. In addition, after increasing the speed, the dynamic balance requirements of the grass cutter need to be increased, which directly increases the manufacturing cost of the grass cutter. Summary of the invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the low scattering efficiency of the crushing device in the prior art.

[0006] To this end, the present invention proposes a chopper assembly, comprising:

[0007] A grass discharge passage and a grass inlet and a grass discharge outlet located at both ends of the grass discharge passage;

[0008] A movable knife roller is arranged in the grass discharge channel;

[0009] A plurality of movable blades are arranged in a spiral shape and are detachably mounted on the movable blade roller; any movable blade is parallel to the cross section of the movable blade roller;

[0010] A fixed blade seat is arranged in the grass discharge channel on the side of the movable blade roller close to the grass inlet;

[0011] A plurality of fixed blades are arranged on the fixed knife base in the same direction and at uniform intervals; when the moving knife roller is driven to rotate, the moving knife roller drives the moving blades to rotate through the gaps between the fixed blades.

[0012] A dispersing structure is arranged on the straw discharging port and is adapted to uniformly disperse the crushed cereal straw.

[0013] The positive projections of all the moving blades on the plane where the cross-section of the moving knife roller is located form a closed loop.

[0014] It further includes:

[0015] A plurality of moving knife bases are welded and fixed on the moving knife roller; the moving blades are fixedly installed in the moving knife bases one by one.

[0016] Any one of the moving knife bases has a U-shaped structure; the moving blade is bolted and fixed in the U-shaped installation cavity of the moving knife base.

[0017] In the square structure unfolded along the generatrix of the cylindrical moving knife roller, in the length direction, a plurality of the moving knife bases are arranged in rows; in the width direction, the moving knife bases are arranged in multiple rows.

[0018] In the width direction, the adjacent rows of the moving knife bases are arranged obliquely in the same direction.

[0019] The moving knife bases in the adjacent rows are arranged at intervals one by one in the length direction.

[0020] It further includes an anti-entangling ring; the anti-entangling ring includes:

[0021] At least two ring plates, each having an arc-shaped structure; all the ring plates are connected end to end to form an annular isolation area.

[0022] At least two clamping plates are fixed on one of the two ring plates that are connected, and a slot is formed between the clamping plate and the ring plate; the other ring plate is adapted to be inserted and fixed in the slot.

[0023] The dispersing structure includes:

[0024] A straw separating plate is fixed on the upper edge of the straw discharging port;

[0025] The plate surface of the straw separating plate is gradually enlarged from the straw discharging port towards the end far from the straw discharging port.

[0026] A plurality of first straw guiding plates are arranged on the lower surface of the straw separating plate at intervals along the direction parallel to the edge of the straw discharging port; the first straw guiding plates are perpendicular to the straw separating plate and are arranged at an angle with the midline of the straw separating plate.

[0027] The first straw guiding plates are arranged at the end close to the straw discharging port; it further includes:

[0028] A plurality of second grass guide plates are arranged at intervals on the lower surface of the grass separation plate in a direction parallel to the edge of the grass discharge port and located at an end away from the grass discharge port; the second grass guide plates are perpendicular to the grass separation plate and are arranged at an angle to the center line of the grass separation plate;

[0029] The number of the second grass guide plates is greater than the number of the first grass guide plates.

[0030] The technical solution of the present invention has the following advantages:

[0031] 1. The chopper assembly provided by the present invention includes a grass discharge channel and a grass inlet and a grass discharge port located at both ends of the grass discharge channel, and the movable blade roller is arranged in the grass discharge channel. A plurality of movable blades are arranged and distributed in a spiral shape and are detachably mounted on the movable blade roller, and any movable blade is parallel to the cross section of the movable blade roller, and the fixed blade seat is arranged in the grass discharge channel on the side of the movable blade roller close to the grass inlet. A plurality of fixed blades are arranged on the fixed blade seat in the same direction and evenly spaced. When the movable blade roller is driven to rotate to any position, it can be ensured that there are movable blades that can pass through the gap between the fixed blades, that is, the cutting state between the movable blades and the fixed blades can be always maintained. At the normal speed of the movable blade roller, the chopping efficiency is still improved, and the power output cost caused by increasing the speed is reduced. The spreading structure is arranged on the grass discharge port, which is suitable for evenly spreading the crushed straw. The chopped straw is evenly spread in the farmland through the spreading structure to avoid the accumulation of straw in the farmland, reduce labor and improve efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 is a schematic diagram of the structure of a chopper in an embodiment of the present invention;

[0034] Figure 2 It is a structural schematic diagram of a fixed knife seat in an embodiment of the present invention;

[0035] Figure 3 It is a structural schematic diagram of the movable knife roller in an embodiment of the present invention;

[0036] Figure 4 It is a schematic diagram of the distribution structure of the moving knife seat after the moving knife roller is unfolded along its generatrix in an embodiment of the present invention;

[0037] Figure 5 It is a structural schematic diagram of the movable knife seat in an embodiment of the present invention;

[0038] Figure 6 It is a schematic diagram of the assembly structure of the movable blade in an embodiment of the present invention;

[0039] Figure 7 Schematic diagram of the structure of the anti-entanglement ring in an embodiment of the present invention;

[0040] Figure 8 It is a schematic diagram of the assembly structure of the spreading structure in an embodiment of the present invention;

[0041] Fig. 9 Schematic diagram of the structure of the grass dividing board in the embodiment of the present invention.

[0042] Description of reference numerals:

[0043] 1r, moving knife roller; 2r, moving blade; 3r, fixed knife seat; 4r, fixed blade; 5r, moving knife seat; 10r, left side wall; 11r, right side wall;

[0044] K, anti-entanglement ring; 1k, ring plate; 11k, bottom plate; 12k, side plate; 2k, card plate; 3k, slot; 4k, obstacle removal slot; 5k, assembly hole;

[0045] 1p, grass dividing board; 11p, extension section; 2p, first grass guide board; 3p, second grass guide board; 10p, grass discharge port. DETAILED DESCRIPTION

[0046] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are 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 cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0048] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. 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 situations.

[0049] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0050] Embodiment 1

[0051] This embodiment provides a shredder assembly, as Figure 1 and Figure 8 shown, including a grass discharge channel and a grass inlet (not shown in the figure) and a grass discharge port 10p at both ends of the grass discharge channel. Both ends of the moving knife roller 1r are rotatably fixed to the left side wall 10r and the right side wall 11r of the grass discharge channel. For the convenience of clearly showing other structures, the left side wall 10r and the right side wall 11r are only partially shown in Figure 1 the figure. The moving knife roller 1r is a cylindrical roller. A plurality of moving knife blades 2r are arranged in a spiral distribution and are detachably mounted on the moving knife roller 1r. Any moving knife blade 2r is parallel to the cross-section of the moving knife roller 1r.

[0052] As Figure 3 shown, a plurality of moving knife seats 5r are welded and fixed on the moving knife roller 1r. The moving knife blades 2r are correspondingly and fixedly mounted in the moving knife seats 5r one by one. Each moving knife seat 5r has a U-shaped structure. In this embodiment, the moving knife blade 2r is bolted and fixed in the U-shaped installation cavity of the moving knife seat 5r.

[0053] As Figure 4 shown, in the square structure after unfolding the moving knife roller 1r along one of its cylindrical generatrices and laying it flat, in the length direction, a plurality of moving knife seats 5r are arranged in rows and inclined. As Figure 4 shown, six moving knife seats 5r form a row, and are arranged at intervals and inclined from the upper left first moving knife seat 5r to the lower right in sequence. In the width direction, the moving knife seats 5r are arranged in multiple rows. As Figure 4 shown, in this embodiment, the moving knife seats 5r form four rows from top to bottom, and the four rows of moving knife seats 5r are inclined in the same direction. And the moving knife seats 5r in adjacent rows are arranged at intervals in the length direction, that is, the first row of moving knife seats 5r and the second row of moving knife seats 5r are staggered, and the first row of moving knife seats 5r and the third row of moving knife seats 5r are in the same position, forming a row-by-row intersection. The distribution state on the moving knife roller 1r is as Figure 5As shown, the orthographic projections of all the moving knife seats 5r on the plane where the cross section of the moving knife roller 1r is located are in a closed ring shape, as shown in FIG. Figure 6 As shown, after the movable blades 2r are installed in the movable blade holder 5r, the movable blades 2r can also form a closed loop on the plane where the cross section of the movable blade roller 1r is located.

[0054] The fixed blade seat 3r is arranged obliquely below the moving blade roller 1r. Figure 2 As shown, a plurality of fixed blades 4r are arranged on the fixed blade seat 3r in the same direction and at even intervals, and a row of movable blades 2r is passed between two adjacent fixed blades 4r. Figure 4 In the figure, the first row of movable blades 2r are the movable blades 2r on the first movable blade holder 5r from the left in the first and third rows, the second row of movable blades 2r are the movable blades 2r on the first movable blade holder 5r from the left in the second and fourth rows, and so on.

[0055] When the moving blade roller 1r is driven to rotate, the moving blade 2r is driven by the moving blade roller 1r to rotate and pass through the gaps between the fixed blades 4r. The moving blades 2r are arranged and distributed in a spiral shape on the roller surface of the moving blade roller 1r. When the moving blade roller 1r is in any rotation position, it can be ensured that the moving blade 2r can pass through the gaps between the fixed blades 4r, that is, the cutting state between the moving blade 2r and the fixed blade 4r can be always maintained. At the normal rotation speed of the moving blade roller 1r, the shredding efficiency is still improved, the power output cost caused by increasing the rotation speed is reduced, and the safety hazard caused by the destruction of the dynamic balance due to the increase in the rotation speed is avoided.

[0056] like Figure 7 As shown, the anti-entanglement ring K is sleeved on the bearing seats at both ends of the moving knife roller 1r and fixed on the left wall 10r and the right wall 11r. Figure 7 As shown, each anti-entanglement ring K includes at least two ring plates 1k and at least two clamping plates 2k. The ring plates 1k are respectively in an arc-shaped structure, and all the ring plates 1k are connected end to end to form a circular isolation area. At least two clamping plates 2k are fixed on one of the two connected ring plates 1k, and a slot 3k is formed between the ring plate 1k; the other ring plate 1k is suitable for being inserted and fixed in the slot 3k.

[0057] In this embodiment, Figure 7 As shown, any ring plate 1k includes a bottom plate 11k and a side plate 12k. The bottom plate 11k is a flat plate bent in an arc shape, and the side plate 12k is a curved plate arranged along the outer ring edge of the bottom plate 11k. In this embodiment, the bottom plate 11k and the side plate 12k are integrally formed.

[0058] In this embodiment, two ring plates 1k are provided, and both ring plates 1k are semicircular, and the outer wall surface of one ring plate 1k is attached to the inner wall surface of the other ring plate 1k, and holes are punched on the two superimposed bottom plates 11k, and the two ring plates 1k are fixedly connected by bolts. A plurality of assembly holes 5k are also provided on the bottom plate 11k, and the assembly holes 5k match the size of conventional bolts. The bolts pass through the assembly holes 5k to install and fix the anti-entanglement ring on the left side wall 10r and the right side wall 11r. Of course, the ring plates 1k can also be three or four, etc., which are connected end to end in sequence to form a circular isolation area. The specific number of the ring plates 1k depends on the specific situation.

[0059] In this embodiment, the side plate 12k of any ring plate 1k is arranged perpendicular to the bottom plate 11k, the card plate 2k is bent in an L shape, the short side of the L shape is welded and fixed to the outer wall surface of one side plate 12k, and is located at both ends of the side plate 12k, the long side of the L shape is arranged parallel to the side plate 12k, and a slot 3k is formed between the card plate 2k and the side plate 12k, and the two ends of the other side plate 12k are correspondingly inserted into the slot 3k.

[0060] For example Figure 7 As shown, at least one obstacle clearing opening is provided on the bottom plate 11k for observation or to extend other equipment therefrom. In this embodiment, the obstacle clearing opening is an obstacle clearing groove 4k formed by the inner edge of the arc-shaped bottom plate 11k being recessed toward the outer edge of the arc-shaped bottom plate 11k. The obstacle clearing groove 4k is an isosceles trapezoid as a whole, and the width of the notch is greater than the width of the bottom of the groove. The notch is located on the inner ring of the bottom plate 11k. The hole formed by the bottom plate 11k of the anti-entanglement ring is used to be fixed on the bearing seat. Therefore, the notch is buckled on the surface of the bearing seat. The notch size is large, which is more convenient for observing the internal situation. In this embodiment, two obstacle clearing grooves 4k are provided on the bottom plate 11k of each ring plate 1k, and the four obstacle clearing grooves 4k are evenly spaced on the circumference.

[0061] The annular isolation area is formed by the ring plate 1k, which is suitable for being sleeved and fixed on the driving shaft and blocked in the gap to prevent weeds or straw from being entangled on the driving shaft.

[0062] like Figure 8 and Fig. 9 As shown, the spreading structure includes a grass spreading plate 1p, a plurality of first grass guide plates 2p and a plurality of second grass guide plates 3p. Fig. 9 As shown, an extension section 11p is provided on the grass separating board 1p, and the width of the extension section 11p is the same as the width of the grass discharge port 10p. The edge of the extension section 11p is provided with a flange, and is fixed to the upper edge of the grass discharge port 10p through the flange. The grass separating board 1p is provided with an overall downward tilt.

[0063] The surface of the grass dividing plate 1p is gradually enlarged from its extension section 11p to the end away from the grass discharge port 10p, and a plurality of first grass guide plates 2p are spaced apart on the lower surface of the grass dividing plate 1p in a direction parallel to the edge of the grass discharge port 10p and close to one end of the grass discharge port 10p. The first grass guide plate 2p is perpendicular to the grass dividing plate 1p and is set at an angle to the center line of the grass dividing plate 1p. In the present embodiment, three first grass guide plates 2p are provided, which are arranged on the grass dividing plate 1p at different angles, and are suitable for guiding the broken straw in different directions. Four, five, etc. first grass guide plates 2p can also be provided, depending on specific needs. The first grass guide plates 2p are symmetrically arranged about the center line of the grass dividing plate 1p.

[0064] like Fig. 9 As shown, a plurality of second grass guide plates 3p are arranged on the grass dividing plate 1p at one end away from the grass discharge port 10p, and the second grass guide plates 3p are arranged at intervals on the lower surface of the grass dividing plate 1p in a direction parallel to the edge of the grass discharge port 10p. Similarly, the second grass guide plates 3p are perpendicular to the grass dividing plate 1p and are arranged at an angle with the center line of the grass dividing plate 1p. In this embodiment, the number of the second grass guide plates 3p is greater than the number of the first grass guide plates 2p. For example, seven second grass guide plates 3p are arranged, and the seven second grass guide plates 3p are evenly spaced and symmetrically arranged about the center line of the grass dividing plate 1p. The angle between the second grass guide plate 3p and the center line of the grass dividing plate 1p is gradually increased from the second grass guide plate 3p close to the center line of the grass dividing plate 1p to the second grass guide plate 3p away from the center line of the grass dividing plate 1p. In this embodiment, except for the second grass guide plate 3p located on the center line of the grass dividing plate 1p, the other second grass guide plates 3p are curved plates, so that all the second grass guide plates 3p are fan-shaped as a whole. The first grass guide plate 2p and the second grass guide plate 3p form a trapezoidal structure, and the crushed straw coming out of the grass discharge port 10p is first guided and dispersed by the first grass guide plate 2p, and then spread over a large range and at multiple angles by the second grass guide plate 3p, so that the straw cut and crushed by the movable blade 2r and the fixed blade 4r is evenly spread in the field, avoiding straight-line accumulation in the field, thereby improving the spreading efficiency.

[0065] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A chopper assembly, characterized in that: Comprising: A straw discharging channel and a straw inlet and a straw outlet (10p) located at both ends of the straw discharging channel; A moving knife roller (1r) arranged in the straw discharging channel; A plurality of moving knife blades (2r) spirally arranged and detachably mounted on the moving knife roller (1r); any one of the moving knife blades (2r) is parallel to the cross-section of the moving knife roller (1r); A fixed knife seat (3r) arranged in the straw discharging channel on the side of the moving knife roller (1r) close to the straw inlet; A plurality of fixed knife blades (4r) arranged in the same direction and evenly spaced on the fixed knife seat (3r); when the moving knife roller (1r) is driven to rotate, the moving knife roller (1r) drives the moving knife blades (2r) to rotate through the gaps between the fixed knife blades (4r); A scattering structure arranged on the straw outlet (10p) and adapted to evenly scatter the crushed cereal straw; An anti-entangling loop (K); the anti-entangling loop (K) comprises: At least two circular plates (1k), each having an arc-shaped structure; all the circular plates (1k) are joined end to end to form an annular isolation area; At least two clamping plates (2k) fixed on one of the two circular plates (1k) where they are joined and forming a slot (3k) with the circular plate (1k); the other circular plate (1k) is adapted to be inserted and fixed in the slot (3k); At least one obstacle-removing opening is also formed on the bottom plate (11k).

2. The chopper assembly according to claim 1, characterized in that The orthographic projections of all the moving knife blades (2r) on the plane where the cross-section of the moving knife roller (1r) is located form a closed loop.

3. The chopper assembly according to claim 2, characterized in that Also comprising: A plurality of moving knife seats (5r) welded and fixed on the moving knife roller (1r); The moving knife blades (2r) are fixedly installed in the moving knife seats (5r) one by one corresponding to each other.

4. The chopper assembly according to claim 3, characterized in that Any one of the moving knife seats (5r) has a U-shaped structure; the moving knife blade (2r) is bolted and fixed in the U-shaped installation cavity of the moving knife seat (5r).

5. The chopper assembly according to claim 4, characterized in that In a square structure unfolded along the generatrix of the cylindrical moving knife roller (1r), in the length direction, a plurality of the moving knife seats (5r) are arranged in rows; in the width direction, the moving knife seats (5r) are arranged in multiple rows.

6. The chopper assembly according to claim 5, characterized in that In the width direction, the adjacent rows of the moving knife seats (5r) are arranged obliquely in the same direction.

7. The chopper assembly according to claim 6, characterized in that The moving knife seats (5r) in adjacent rows are arranged at intervals one by one in the length direction.

8. The chopper assembly according to claim 7, characterized in that The scattering structure comprises: A straw dividing plate (1p) fixed on the upper edge of the straw outlet (10p); The plate surface of the straw dividing plate (1p) is gradually enlarged from the straw outlet (10p) towards the end far from the straw outlet (10p); A plurality of first straw guiding plates (2p) arranged at intervals along the direction parallel to the edge of the straw outlet (10p) on the lower surface of the straw dividing plate (1p); the first straw guiding plates (2p) are perpendicular to the straw dividing plate (1p) and are arranged at an angle with the midline of the straw dividing plate (1p).

9. The chopper assembly according to claim 8, characterized in that The first straw guiding plates (2p) are arranged at the end close to the straw outlet (10p); also comprising: A plurality of second grass guide plates (3p) are arranged at intervals on the lower surface of the grass separation plate (1p) in a direction parallel to the edge of the grass discharge port (10p) and are located at an end away from the grass discharge port (10p); the second grass guide plates (3p) are perpendicular to the grass separation plate (1p) and are arranged at an angle to the center line of the grass separation plate (1p); The number of the second grass guide plates (3p) is greater than the number of the first grass guide plates (2p).

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