Hay forage chopping device

Abstract

The forage hay chopping device comprises a rack, a chopping box is installed on the rack, a feeding hopper is installed at the upper end of the chopping box, a discharging pipe is installed at the lower end of the chopping box, and a first chopping mechanism and a second chopping mechanism are installed at the upper end and the lower end of an inner cavity of the chopping box correspondingly; a motor is installed on the machine frame, a transmission shaft is installed at the output end of the motor, and the end, away from the motor, of the transmission shaft is in transmission connection with the first chopping mechanism through a transmission belt assembly. The motor drives the transmission shaft to rotate, and the design that the rotating axis of the first chopping mechanism is perpendicular to the rotating axis of the second chopping mechanism is utilized, so that forage grass entering the chopping box can be cut in two different directions, the actual chopping effect can be improved, the particle size of hay chipping particles is reduced, hay chippings are finer, and the quality of the hay chippings is improved. Furthermore, the whole structure is simple, the operation is convenient and fast, and the device has a wide market prospect.

Description

Technical Field

[0001] The present application relates to the field of agricultural planting technology, and in particular to a forage hay chopping device. Background Art

[0002] Forage is an important source of feed for animal husbandry and plays a key role in maintaining the health and production performance of livestock and poultry. With the development of animal husbandry and the adjustment of agricultural structure, the processing and utilization of forage are becoming increasingly important. Hay is a product of dried forage, which has the advantages of easy storage and transportation. Chopped hay can increase the feed intake of livestock and poultry, reduce energy consumption during chewing, reduce waste, and improve the digestibility of forage, making the chopped hay easier for livestock and poultry to swallow and digest, which helps to improve the utilization rate of feed.

[0003] The prior art discloses a forage processing device for animal husbandry, comprising a box body, wherein two roller row mechanisms are installed on the inner side of the box body, and the two roller row mechanisms are arranged in a V shape, and a stirring and cutting mechanism is arranged on the inner side of the box body; the roller row mechanism comprises a plurality of stirring rollers rotatably installed on the inner wall of the box body and a cutting roller, and the cutting roller is located at the bottom; one of the roller row mechanisms also comprises a striking roller rotatably installed on the inner side of the box body, and the striking roller is located above the stirring roller, and a striking plate is fixedly provided on the outer surface of the striking roller; an additional cutting roller is rotatably installed on the inner side of the box body near the bottom of the two groups of roller row mechanisms.

[0004] Although the above-mentioned processing device can chop grass hay, in actual use, since it only cuts the grass in combination through the cutting roller, the stirring roller and the striking roller, and the axes of the multiple rollers are parallel to each other, the cutting surfaces of the grass are parallel to each other, that is, the grass can only be cut in a single direction in the device, resulting in limited actual chopping effect, which may cause the hay debris particles after cutting to be larger, affecting the quality of feed production. Summary of the invention

[0005] To this end, the present application provides a forage hay chopping device to solve the problem in the prior art that the forage is cut in a single direction, resulting in limited actual chopping effect, which may in turn cause the hay debris particles after cutting to be larger, affecting the quality of feed production.

[0006] In order to achieve the above objectives, this application provides the following technical solutions:

[0007] A forage hay chopping device comprises a frame, a chopping box is mounted on the frame, a feed hopper is mounted on the upper end of the chopping box, a discharge pipe is mounted on the lower end of the chopping box, a first chopping mechanism and a second chopping mechanism are mounted on the upper and lower ends of the inner cavity of the chopping box respectively, a motor is mounted on the frame, a transmission shaft is mounted on the output end of the motor, an end of the transmission shaft away from the motor is transmission-connected to the first chopping mechanism through a transmission belt assembly, an end of the transmission shaft close to the motor is transmission-connected to the second chopping mechanism through a transmission mechanism, the first chopping mechanism and the second chopping mechanism are driven to rotate by the motor to rotate and chop the hay entering the chopping box, and the rotation axes of the first chopping mechanism and the second chopping mechanism are perpendicular to each other;

[0008] The first chopping mechanism comprises a first rotating shaft and a first cutter disc, wherein the first rotating shaft is rotatably mounted on an upper portion of a side of the chopping box away from the feed hopper, one end of the first rotating shaft extends into the chopping box and is connected to the first cutter disc, and the other end of the first rotating shaft is located outside the chopping box and is drivingly connected to a movable end of a transmission belt assembly, and the first rotating shaft is driven by the transmission belt assembly to drive the first cutter disc to rotate and chop the transmitted hay;

[0009] A material guide assembly is installed inside the chopping box, and the material guide assembly includes a material guide plate and a third knife disc. The material guide plate is fixed inside the chopping box and is located between the first chopping mechanism and the second chopping mechanism. The material guide plate is in a conical bucket shape with the tip facing upward. A material guide port is provided at the bottom edge of the conical surface of the material guide plate. The third knife disc is installed on the tip of the material guide plate and rotates synchronously with the action of the first chopping mechanism and the second chopping mechanism, so as to re-cut the hay located between the first chopping mechanism and the second chopping mechanism.

[0010] Optionally, the second shredding mechanism includes a second rotating shaft and a second cutter disc, the second rotating shaft is rotatably mounted at the lower end of the inner cavity of the shredding box, one end of the second rotating shaft extends vertically upward and is assembled with the second cutter disc, and the other end of the second rotating shaft extends vertically downward and is transmission-connected to one end of the transmission shaft away from the transmission belt assembly through a transmission mechanism.

[0011] Further optionally, the first blade disc includes a first cutting blade, a second cutting blade, a third cutting blade and a mounting plate, and a plurality of third cutting blades are evenly installed on the mounting plate. The third cutting blade principle is provided with the first cutting blade and the second cutting blade at one end of the mounting plate, and the first cutting blade and the second cutting blade are both arc blades, the tip area of ​​the first cutting blade is bent inward, and the tip area of ​​the second cutting blade is bent outward.

[0012] Further optionally, the first cutting edge and the second cutting edge are arranged back to back; the first cutting edge, the second cutting edge and the third cutting edge are made of the same material in one piece.

[0013] Further optionally, the transmission mechanism includes a worm and a worm wheel, one end of the worm is connected to an end of the second rotating shaft located below the shredder box, the other end of the worm is connected to an output end of the motor through a transmission member, the worm wheel is installed on an end of the transmission shaft away from the transmission belt assembly, and the worm and the worm wheel are meshed with each other.

[0014] Further optionally, a discharge port connected to the inner cavity of the chopping box is provided at the bottom thereof, and the lower end opening of the discharge port is connected to the upper end of a discharge pipe, and a stripper plate located below the second blade disc is also installed on the second rotating shaft, and the stripper plate is driven to rotate synchronously by the second rotating shaft, so that the hay fragments falling on the lower end of the inner cavity of the chopping box are swept into the discharge port by the stripper plate, and the hay fragments are discharged through the discharge pipe.

[0015] Further optionally, there are multiple material-diverting plates, which are evenly distributed along the circumference of the outer wall of the second rotating shaft, and the lower ends of the material-diverting plates are slidably connected to the bottom surface of the inner cavity of the shredder box.

[0016] Further optionally, the third cutter disc is arranged obliquely and parallel to the conical surface of the material guide disc.

[0017] Further optionally, there are multiple material guide ports, the multiple material guide ports are evenly distributed along the circumference of the bottom of the conical surface of the material guide disk, and the gap between two adjacent material guide ports is less than 1 cm.

[0018] Further optionally, the material guiding port is arranged above the blade of the second shredding mechanism, and the width of the material guiding port is consistent with the width of the blade of the second shredding mechanism.

[0019] Compared with the prior art, this application has at least the following beneficial effects:

[0020] When in use, the transmission shaft is driven by the motor to rotate, and the transmission shaft drives the first chopping mechanism to rotate through the transmission belt assembly. At the same time, the transmission shaft drives the second chopping mechanism to rotate through the transmission mechanism. The design that the rotation axes of the first chopping mechanism and the second chopping mechanism are perpendicular allows the hay entering the chopping box to be cut in two different directions, which is beneficial to improving the actual chopping effect, thereby reducing the particle size of the hay debris particles, making the hay debris more dense, and thus improving the production quality of hay feed. In addition, the overall structure is simple, the operation is convenient, and it has broad market prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more intuitively illustrate the prior art and the present application, exemplary drawings are given below. It should be understood that the specific shapes and structures shown in the drawings should not generally be regarded as limiting conditions for implementing the present application; for example, those skilled in the art are capable of easily making conventional adjustments or further optimizations to the addition / reduction / attribution division, specific shapes, positional relationships, connection methods, dimensional ratios, etc. of certain units (components) based on the technical concepts and exemplary drawings disclosed in the present application.

[0022] Figure 1 A schematic diagram of the front structure of the forage hay chopping device provided in this application;

[0023] Figure 2 A front cross-sectional structural schematic diagram of a chopping box of a forage hay chopping device provided in the present application;

[0024] Figure 3 A schematic diagram of the structure of the first knife disc in the forage hay chopping device provided in the present application;

[0025] Figure 4 A schematic diagram of the top view of the material guide assembly of the forage hay chopping device provided in the present application;

[0026] Figure 5 A schematic diagram of the top view of the material transfer plate of the forage hay chopping device provided in this application;

[0027] Figure 6 A schematic diagram of the structure of an embodiment provided in the present application.

[0028] Description of reference numerals:

[0029] 1. Frame; 2. Chopping box; 3. Feed hopper; 4. Discharge pipe; 5. First rotating shaft; 6. First cutter disc; 601. First cutting edge; 602. Second cutting edge; 603. Third cutting edge; 604. Mounting plate; 7. Motor; 8. Transmission shaft; 9. Transmission belt assembly; 10. Transmission mechanism; 101. Worm; 102. Worm wheel; 11. Second rotating shaft; 12. Second cutter disc; 13. Discharge port; 14. Diverter plate; 15. Guide disc; 16. Guide port; 17. Third cutter disc; 18. Electric lead screw; 19. Guide pipe; 20. Storage box; 21. Conveyor; 22. Transmission assembly. DETAILED DESCRIPTION

[0030] The present application is further described below in detail through specific embodiments in conjunction with the accompanying drawings.

[0031] like Figure 1 and Figure 6As shown, a forage hay chopping device comprises a frame 1, a chopping box 2 is mounted on the frame 1, a feed hopper 3 is mounted on the upper end of the chopping box 2, a discharge pipe 4 is mounted on the lower end of the chopping box 2, a first chopping mechanism and a second chopping mechanism are mounted on the upper and lower ends of the inner cavity of the chopping box 2, respectively, a motor 7 is mounted on the frame 1, a transmission shaft 8 is mounted on the output end of the motor 7, an end of the transmission shaft 8 away from the motor 7 is connected to the first chopping mechanism through a transmission belt assembly 9, and an end of the transmission shaft 8 close to the motor 7 is connected to the second chopping mechanism through a transmission mechanism 10, the first chopping mechanism and the second chopping mechanism are driven to rotate by the motor 7 to rotate and chop the hay entering the chopping box 2, and the rotation axes of the first chopping mechanism and the second chopping mechanism are perpendicular to each other;

[0032] The transmission shaft 8 is driven to rotate by the motor 7, and the transmission shaft 8 drives the first chopping mechanism to rotate through the transmission belt assembly 9. At the same time, the transmission shaft 8 drives the second chopping mechanism to rotate through the transmission mechanism 10. The design that the rotation axes of the first chopping mechanism and the second chopping mechanism are perpendicular to each other allows the grass entering the chopping box 2 to be cut in two different directions, which is beneficial to improving the actual chopping effect, thereby reducing the particle size of the hay debris particles, making the hay debris more dense, and thus improving the production quality of hay feed. In addition, the overall structure is simple, the operation is convenient, and it has broad market prospects.

[0033] Specifically, Figure 2 As shown, the first shredding mechanism includes a first rotating shaft 5 and a first cutter disc 6. The first rotating shaft 5 is rotatably mounted on the upper part of the shredding box 2 away from the feed hopper 3. One end of the first rotating shaft 5 extends into the shredding box 2 and is connected to the first cutter disc 6. The other end of the first rotating shaft 5 is located outside the shredding box 2 and is transmission-connected to a movable end of a transmission belt assembly 9. The first rotating shaft 5 is driven by the transmission belt assembly 9 to drive the first cutter disc 6 to rotate and shred the transmitted hay.

[0034] Furthermore, the first rotating shaft 5 is horizontally arranged, and one end of the first rotating shaft 5 located in the chopping box 2 is equipped with two first cutter discs 6 parallel to each other, and the outer ring blades of the two first cutter discs 6 are staggered, and the transmission belt assembly 9 is a belt transmission structure, and the transmission belt assembly 9 includes a belt and two pulleys, and the two pulleys are respectively installed on the same side ends of the first rotating shaft 5 and the transmission shaft 8, and the two pulleys are connected by belt transmission. With such a design, when the motor 7 drives the transmission shaft 8 to rotate, the transmission shaft 8 can drive the first rotating shaft 5 and the first cutter disc 6 to rotate with the help of the transmission belt assembly 9, thereby realizing the preliminary cutting of forage hay through the high-speed rotation of the first cutter disc 6.

[0035] like Figure 3As shown, the first blade disc 6 includes a first cutting blade 601, a second cutting blade 602, a third cutting blade 603 and a mounting plate 604, and a plurality of third cutting blades 603 are evenly installed on the mounting plate 604. The third cutting blade 603 is provided with the first cutting blade 601 and the second cutting blade 602 at one end of the mounting plate 604. The first cutting blade 601 and the second cutting blade 602 are both arc blades, the tip area of ​​the first cutting blade 601 is bent inward, the tip area of ​​the second cutting blade 602 is bent outward, and the first cutting blade 601 and the second cutting blade 602 are arranged back to back, and the first cutting blade 601, the second cutting blade 602 and the third cutting blade 603 are made of the same material as a whole.

[0036] Furthermore, if Figure 2 As shown, the second shredding mechanism includes a second rotating shaft 11 and a second cutter disc 12. The second rotating shaft 11 is rotatably mounted at the lower end of the inner cavity of the shredding box 2. One end of the second rotating shaft 11 extends vertically upward and is assembled with the second cutter disc 12. The other end of the second rotating shaft 11 extends vertically downward and is transmission-connected to one end of the transmission shaft 8 away from the transmission belt assembly 9 through the transmission mechanism 10.

[0037] The transmission mechanism 10 includes a worm 101 and a worm wheel 102. One end of the worm 101 is connected to an end of the second rotating shaft 11 located below the shredder box 2. The other end of the worm 101 is connected to the output end of the motor 7 through a transmission member. The worm wheel 102 is installed on an end of the transmission shaft 8 away from the transmission belt assembly 9, and the worm 101 and the worm wheel 102 are meshed with each other.

[0038] Combination Figure 1 and Figure 2 As shown, the output end of the motor 7 is connected to the lower end of the worm 101 through a belt transmission structure. When the motor 7 drives the worm 101 to rotate, the worm 101 drives the second rotating shaft 11 and the second cutter disc 12 to rotate. The worm 101 also drives the worm wheel 102 and the transmission shaft 8 to rotate. The transmission shaft 8 drives the first rotating shaft 5 and the first cutter disc 6 to rotate through the transmission belt assembly 9, thereby realizing double cutting, so that the second cutter disc 12 re-cuts the forage hay after the initial cutting, thereby improving the actual cutting accuracy, making the hay debris particles smaller, and further improving the production quality of hay feed;

[0039] Since the axes of the second rotating shaft 11 and the first rotating shaft 5 are perpendicular to each other, the second cutter disc 12 rotates on a horizontal plane, while the first cutter disc 6 rotates on a vertical plane, thereby achieving double cutting of the grass hay in two perpendicular directions, which is beneficial to improving the actual cutting effect.

[0040] Specifically, Figure 2As shown, a discharge port 13 communicating with the inner cavity of the chopping box 2 is provided at the bottom thereof, and the lower end opening of the discharge port 13 is communicated with the upper end of the discharge pipe 4. A material-pickup plate 14 located below the second blade disc 12 is also installed on the second rotating shaft 11. The material-pickup plate 14 is driven to rotate synchronously by the second rotating shaft 11, and the hay debris falling on the lower end of the inner cavity of the chopping box 2 is swept into the discharge port 13 by the material-pickup plate 14, and the hay debris is discharged through the discharge pipe 4.

[0041] Furthermore, if Figure 5 As shown, there are multiple material-diverting plates 14, which are evenly distributed along the circumference of the outer wall of the second rotating shaft 11, and the lower ends of the material-diverting plates 14 are slidably connected to the bottom surface of the inner cavity of the shredder box 2;

[0042] When the motor 7 drives the worm 101 and the second rotating shaft 11 to rotate, the first blade disc 6 and the second blade disc 12 rotate synchronously to cut and crush the forage hay. At the same time, the worm 101 drives the material stripping plate 14 to rotate synchronously. The material stripping plate 14 sweeps the hay debris that falls on the bottom of the inner cavity of the chopping box 2 to the discharge port 13. The hay debris is discharged downward through the discharge port 13 and the discharge pipe 4, so as to complete the automatic unloading operation while cutting and crushing, and facilitate the collection of hay debris.

[0043] Specifically, Figure 2 and Figure 4 As shown, a material guide assembly is installed inside the chopping box 2, and the material guide assembly includes a material guide plate 15 and a third knife disc 17. The material guide plate 15 is fixed inside the chopping box 2 and is located between the first chopping mechanism and the second chopping mechanism. The material guide plate 15 is in a conical bucket shape with the tip facing upward. A material guide port 16 is provided at the bottom edge of the conical surface of the material guide plate 15. The third knife disc 17 is installed on the tip of the material guide plate 15 and rotates synchronously with the action of the first chopping mechanism and the second chopping mechanism, and is used to re-cut the hay located between the first chopping mechanism and the second chopping mechanism.

[0044] One end of the second rotating shaft 11 located inside the shredder box 2 extends to the top of the second knife disc 12 and is rotatably connected to the top of the conical bucket of the guide disc 15, and the third knife disc 17 is installed at the end of the second rotating shaft 11 extending upward. With this design, when the motor 7 drives the first knife disc 6 and the second knife disc 12 to rotate synchronously, the third knife disc 17 also rotates accordingly, and can perform a third cutting between the initial cutting and the second cutting, thereby further improving the actual cutting effect;

[0045] Furthermore, the third blade disc 17 is inclined and parallel to the conical surface of the guide disc 15. The inclined design of the third blade disc 17 allows the falling grass hay to be cut in another direction, and the amplitude of the rotary cutting can be increased, thereby improving the cutting effect.

[0046] Furthermore, if Figure 4 As shown, there are multiple guide openings 16, which are evenly distributed along the circumference of the bottom of the conical surface of the guide plate 15, and the gap between two adjacent guide openings 16 is less than 1 cm. The effect of such a design is that the third blade disc 17 cuts the falling hay, and the hay debris slides down the inclined surface of the guide plate 15, and the hay debris continues to fall through the guide openings 16, so that the second blade disc 12 cuts the hay again;

[0047] Furthermore, the material guide port 16 is arranged above the blade of the second shredding mechanism, and the width of the material guide port 16 is consistent with the width of the blade of the second shredding mechanism, so that the hay debris falling downward through the material guide plate 15 will directly fall into the cutting range of the second blade disc 12. When the second blade disc 12 is driven and the peripheral blade rotates, the falling hay debris can be quickly cut, thereby improving the actual cutting effect and accuracy.

[0048] In this embodiment, if Figure 6 As shown, a horizontally arranged electric lead screw 18 is rotatably installed on the frame 1, and the electric lead screw 18 is arranged below the discharge pipe 4. A storage box 20 is arranged below the electric lead screw 18, and the electric lead screw 18 has a movable end that can move back and forth horizontally. A guide pipe 19 is installed at the lower end of the discharge pipe 4, and the lower end of the guide pipe 19 extends between the electric lead screw 18 and the storage box 20, and the guide pipe 19 is fixed to the movable end of the electric lead screw 18 by a fastener, so that the lower end of the guide pipe 19 is driven by the electric lead screw 18 to move back and forth horizontally, so that the guide pipe 19 evenly lays the hay debris in the storage box 20, prevents the hay debris from being stacked in the storage box 20, thereby increasing the actual loading capacity of the storage box 20 and facilitating the collection of hay;

[0049] Furthermore, a conveyor 21 is installed at the bottom of the frame 1. The conveyor 21 is preferably a belt conveyor, and may also be a roller conveyor or a mesh chain conveyor, etc., and the storage box 20 is placed on the conveying surface of the conveyor 21. The storage box 20 is transported by the conveyor 21 so as to load empty boxes and transport full boxes;

[0050] Furthermore, a proximity switch located below the end of the electric lead screw 18 is also installed on the frame 1. When the storage box 20 is transported to the bottom of the guide pipe 19 by the conveyor 21, the proximity switch senses the storage box 20, and the conveyor 21 stops conveying the storage box 20. After a certain period of time, the storage box 20 is gradually full, and the conveyor 21 is started again to complete the automatic loading and unloading operation.

[0051] It should be noted that when the storage box 20 is full and continues to be transported, the feed guide pipe 19 can suspend feeding or continue feeding. If feeding continues, a small amount of hay debris will fall on the conveying part of the conveyor 21 and fall below the front end of the conveyor 21 as the conveyor 21 continues to run. A spare container can be set here to collect the scattered hay debris again, which is convenient for actual work.

[0052] Furthermore, one end of the electric lead screw 18 extends to the outside of one side of the frame 1 and is connected to the free end of the drive shaft 8 through a transmission assembly 22. The transmission assembly 22 is preferably a belt and a pulley. Such a design enables the motor 7 to drive the first shredding mechanism and the second shredding mechanism to cut the hay, and can drive the electric lead screw 18 to rotate synchronously through the transmission shaft 8, thereby driving the guide tube 19 to discharge the hay evenly.

[0053] The technical features of the above embodiments may be arbitrarily combined (as long as there is no contradiction in the combination of these technical features). To make the description concise, not all possible combinations of the technical features in the above embodiments are described; these embodiments that are not explicitly written should also be considered to be within the scope of this specification.

Claims

1. A forage hay chopping device, comprising a frame (1), a chopping box (2) mounted on the frame (1), a feed hopper (3) mounted at the upper end of the chopping box (2), and a discharge pipe (4) mounted at the lower end of the chopping box (2), characterized in that: A first chopping mechanism and a second chopping mechanism are respectively installed at the upper and lower ends of the inner cavity of the chopping box (2); a motor (7) is installed on the frame (1); a transmission shaft (8) is installed on the output end of the motor (7); an end of the transmission shaft (8) away from the motor (7) is connected to the first chopping mechanism through a transmission belt assembly (9); an end of the transmission shaft (8) close to the motor (7) is connected to the second chopping mechanism through a transmission mechanism (10); the motor (7) drives the first chopping mechanism and the second chopping mechanism to rotate, thereby rotating and chopping the hay entering the chopping box (2); and the rotation axes of the first chopping mechanism and the second chopping mechanism are perpendicular to each other; The first chopping mechanism comprises a first rotating shaft (5) and a first knife disc (6); the first rotating shaft (5) is rotatably mounted on an upper portion of a side of the chopping box (2) away from the feed hopper (3); one end of the first rotating shaft (5) extends into the chopping box (2) and is connected to the first knife disc (6); the other end of the first rotating shaft (5) is located outside the chopping box (2) and is transmission-connected to a movable end of a transmission belt assembly (9); the first rotating shaft (5) is driven by the transmission belt assembly (9) to drive the first knife disc (6) to rotate and chop the transmitted hay; A material guide assembly is installed inside the chopping box (2), and the material guide assembly includes a material guide plate (15) and a third knife disc (17). The material guide plate (15) is fixed inside the chopping box (2) and is located between the first chopping mechanism and the second chopping mechanism. The material guide plate (15) is in a conical bucket shape with the tip facing upwards. A material guide port (16) is provided at the bottom edge of the conical surface of the material guide plate (15). The third knife disc (17) is installed on the tip of the material guide plate (15) and rotates synchronously with the action of the first chopping mechanism and the second chopping mechanism, and is used for re-cutting the hay located between the first chopping mechanism and the second chopping mechanism.

2. A forage hay chopping device according to claim 1, characterized in that: The first blade disc (6) comprises a first cutting blade (601), a second cutting blade (602), a third cutting blade (603) and a mounting disc (604); a plurality of third cutting blades (603) are evenly mounted on the mounting disc (604); the first cutting blade (601) and the second cutting blade (602) are arranged at one end of the mounting disc (604); both the first cutting blade (601) and the second cutting blade (602) are arc blades; the tip area of ​​the first cutting blade (601) is bent inwards, and the tip area of ​​the second cutting blade (602) is bent outwards.

3. The forage hay chopping device according to claim 2, characterized in that: The first cutting edge (601) and the second cutting edge (602) are arranged in back-to-back relationship; the first cutting edge (601), the second cutting edge (602) and the third cutting edge (603) are integrally manufactured from the same material.

4. The forage hay chopping device according to claim 1, characterized in that: The second shredding mechanism comprises a second rotating shaft (11) and a second cutter disc (12); the second rotating shaft (11) is rotatably mounted on the lower end of the inner cavity of the shredding box (2); one end of the second rotating shaft (11) extends vertically upward and is assembled with the second cutter disc (12); the other end of the second rotating shaft (11) extends vertically downward and is transmission-connected to one end of the transmission shaft (8) away from the transmission belt assembly (9) through a transmission mechanism (10).

5. The forage hay chopping device according to claim 1, characterized in that: The transmission mechanism (10) comprises a worm (101) and a worm wheel (102); one end of the worm (101) is connected to an end of the second rotating shaft (11) located below the chopping box (2); the other end of the worm (101) is connected to an output end of the motor (7) via a transmission member; the worm wheel (102) is mounted on an end of the transmission shaft (8) away from the transmission belt assembly (9), and the worm (101) and the worm wheel (102) are meshed with each other.

6. The forage hay chopping device according to claim 1, characterized in that: The bottom of the chopping box (2) is provided with a discharge port (13) which is in communication with the inner cavity thereof, and the lower end opening of the discharge port (13) is in communication with the upper end of the discharge pipe (4). The second rotating shaft (11) is also provided with a material stripping plate (14) which is located below the second blade disc (12). The material stripping plate (14) is driven to rotate synchronously by the second rotating shaft (11), and the hay debris falling on the lower end of the inner cavity of the chopping box (2) is swept into the discharge port (13) by the material stripping plate (14), and the hay debris is discharged through the discharge pipe (4).

7. The forage hay chopping device according to claim 5, characterized in that: There are a plurality of material-diverting plates (14), which are evenly distributed along the circumference of the outer wall of the second rotating shaft (11), and the lower ends of the material-diverting plates (14) are slidably connected to the bottom surface of the inner cavity of the chopping box (2).

8. The forage hay chopping device according to claim 1, characterized in that: The third knife disc (17) is arranged obliquely and is parallel to the conical surface of the material guide disc (15).

9. The forage hay chopping device according to claim 1, characterized in that: The number of the material guide openings (16) is multiple, and the multiple material guide openings (16) are evenly distributed along the circumference of the bottom of the conical surface of the material guide plate (15), and the gap between two adjacent material guide openings (16) is less than 1 cm.

10. The forage hay chopping device according to claim 9, characterized in that: The material guide opening (16) is arranged above the blade of the second chopping mechanism, and the width of the material guide opening (16) is consistent with the width of the blade of the second chopping mechanism.

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