A forage crusher equipped with a directional guide tooth plate

Abstract

The present invention discloses a forage crusher equipped with a directional guide tooth plate, comprising a frame, a motor and a crushing device, wherein the frame is provided with a crushing chamber, the crushing chamber is provided with a feed port and a discharge port, the crushing device is arranged in the crushing chamber, the inner wall of the crushing chamber is provided with a tooth plate, and tooth grooves are arranged at intervals on the tooth plate, the tooth grooves include a first tooth groove and a second tooth groove, the first tooth groove is arranged at one end close to the feed port, the first tooth groove is inclined and slidable toward the discharge end, the second tooth groove is also inclined and slidable toward the discharge end, the length of the first tooth groove is shorter than the length of the second tooth groove, and the second tooth groove is an oblique groove or a corrugated groove inclined downward toward the discharge end. The tooth groove is inclined toward the discharge end, which is conducive to the discharge of forage. The first tooth groove is mainly used to guide materials such as forage into the crushing device, and the second tooth groove can be combined with the crushing device to crush the forage, and is also conducive to the discharge of the forage to the discharge port, which is conducive to improving the crushing efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of crop crushing devices, and in particular relates to a forage crusher equipped with a directional material guide tooth plate. Background Art

[0002] Forage grass refers to plants cultivated as livestock feed. Common forage grasses include royal bamboo grass, sweet elephant grass, sugarcane leaves, corn stalks, paper mulberry, mulberry stalks, etc. After harvesting and crushing, forage grass can be used as fresh grass, hay, silage, etc. The application of forage grass crushing has an important impact on the development of animal husbandry.

[0003] The forage crusher generally includes a crushing device driven by a motor, which is arranged in a crushing chamber and includes a rotating shaft, a cutter disc, a flying disc, and blades and hammers arranged between the cutter disc and the flying disc. At the same time, a tooth plate with tooth grooves is also arranged inside the crushing chamber. The tooth plate is combined with the crushing device to improve the crushing efficiency and crushing quality of the forage.

[0004] There are several designs of tooth plates for existing crushing chambers. The tooth grooves on the first tooth plate are horizontal and parallel to the axis of the rotating shaft. This type of tooth groove does not have a guiding function for grass, and grass can easily get blocked at the feed port. The tooth grooves on the second tooth plate include a first tooth groove inclined downward and a second tooth groove arranged horizontally. This tooth plate is convenient for grass to enter the crushing chamber by setting the first tooth groove inclined downward, and grass blocking at the feed port is not likely to occur; but the second tooth groove is horizontal and does not have the function of grass exporting. The tooth grooves of the third tooth plate include a first tooth groove inclined downward, a second tooth groove arranged horizontally, and a third tooth groove inclined upward. This type of tooth groove is not very convenient for grass exporting. The tooth grooves of the fourth tooth plate include a first tooth groove inclined downward and a second tooth groove inclined upward. This type of tooth groove is easy to feed and difficult to discharge, and the crushing efficiency is low. Especially when crushing grass with a high water content, the grass may stick to the tooth plate, the grass crushing efficiency is low, and the energy consumption is high.

[0005] The disclosure of the above background technology content is only used to assist in understanding the concept and technical solution of the present invention. It does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above content has been disclosed on the filing date of this patent application, the above background technology should not be used to evaluate the novelty and creativity of the present application. Summary of the invention

[0006] The purpose of the present invention is to overcome the above-mentioned defects and provide a forage crusher equipped with a directional guide tooth plate to solve the technical problem of low crushing efficiency of the existing forage crushers.

[0007] To achieve the above-mentioned purpose, the present invention provides a forage grinder equipped with a directional guide tooth plate, including a frame, a motor and a grinding device, the frame is provided with a grinding chamber, the grinding chamber is provided with a feed port and a discharge port, the grinding device is arranged in the grinding chamber, the inner wall of the grinding chamber is provided with a tooth plate, and tooth grooves are arranged at intervals on the tooth plate, the tooth grooves include a first tooth groove and a second tooth groove, the first tooth groove is arranged at one end close to the feed port, the first tooth groove is inclined and slid downwardly toward the discharge end, the second tooth groove is also inclined and slid downwardly toward the discharge end, the length of the first tooth groove is shorter than the length of the second tooth groove, and the second tooth groove is a slanted groove or a corrugated groove inclined downwardly toward the discharge end.

[0008] The tooth groove is inclined toward the discharge end, which is conducive to the discharge of forage. The first tooth groove is mainly used to guide materials such as forage into the crushing device, and the second tooth groove can be combined with the crushing device to crush the forage, and is conducive to the discharge of forage to the discharge port, which is conducive to improving the crushing efficiency.

[0009] Preferably, the angle of inclination of the tooth groove is an acute angle within 60°. Preferably, the angle of inclination of the tooth groove is 3°-45°.

[0010] Preferably, the second tooth groove is an inclined corrugated groove or a stepped groove. Preferably, the corrugation of the second tooth groove away from the first tooth groove is inclined upward. The second tooth groove is overall downward and corrugated, which is beneficial to improve the crushing effect and facilitate the discharge of materials. The end of the second tooth groove is tilted, which is beneficial to the discharge of forage from the discharge port instead of accumulating on the wall of the crushing chamber.

[0011] Preferably, the second tooth groove is an oblique groove, and the inclination angle of the second tooth groove is less than or equal to the inclination angle of the first tooth groove. When the inclination angle of the second tooth groove is smaller than that of the first tooth groove, it is beneficial to crush the grass.

[0012] Preferably, the second tooth groove is bent upward at one end away from the first tooth groove, and the length of the bend is less than the length of the rest of the second tooth groove. The bending at the end of the second tooth groove is conducive to the discharge of forage from the discharge port instead of accumulating on the wall of the crushing chamber.

[0013] Preferably, the tooth surface of the second tooth groove is serrated. Furthermore, the lower tooth surface of the second tooth groove, i.e., the side in contact with the grass, is serrated. The grass is crushed more thoroughly under the interaction between the serrated tooth surface and the hammer. The combination of the inclined and downward tooth groove and the serrated tooth surface can ensure the crushing effect and improve the crushing efficiency.

[0014] Preferably, the tooth plate is an arc-shaped steel sheet, and the tooth groove is hollowed out, and the tooth plate is fixed to the inner wall of the crushing chamber by welding, bolts, slots, etc. The hollow tooth plate is easier to process and install than the convex tooth plate.

[0015] Preferably, the crushing device comprises a rotating shaft, a knife disc, a first flying disc, a second flying disc, a tail disc, blades, hammers and a support shaft, wherein the knife disc, the first flying disc, the second flying disc and the tail disc are fixed on the rotating shaft in sequence; the movable knife is arranged on the knife disc; the blades are respectively arranged between the knife disc and the first flying disc, between the first flying disc and the second flying disc, and between the second flying disc and the tail disc, and the blades are arranged at intervals along the outer periphery of the rotating shaft; the support shaft is also arranged at intervals between the knife disc and the first flying disc, between the first flying disc and the second flying disc, and between the second flying disc and the tail disc, and the hammers are arranged at intervals on the support shaft, and the hammers are hinged with the support shaft and can rotate around the support shaft. The blades can generate wind force, which is conducive to the transmission of forage from the feed end to the discharge end. Preferably, the blades located between the first flying disc and the second flying disc are hollow, which can further screen the forage, reduce resistance, and improve the crushing efficiency of forage.

[0016] Preferably, the ends of the hammers are bent, and along the circumferential direction, the ends of the hammers on two adjacent support shafts are bent in opposite directions. The hammers with opposite bending directions can surround and beat the grass, which is beneficial to improving the crushing efficiency.

[0017] Preferably, the crushing device further comprises a scraper, and the scraper is respectively arranged between the knife disc and the first flying disc and between the first flying disc and the second flying disc, or the scraper is arranged at intervals on the outer periphery of the first flying disc and the second flying disc, and the scraper forms an angle with the length direction of the rotating shaft, and the angle is an acute angle.

[0018] Preferably, a counterweight is also provided on the outer periphery of the tail plate. The provision of the counterweight can increase the moment of inertia of the rotating shaft, and a lower motor can be used to drive the crushing device without causing the crushing device to get stuck. Compared with the existing technology, the present invention has the following beneficial effects:

[0019] 1. The present application provides a tooth plate along the circumferential direction of the inner wall of the crushing chamber, and arranges the first and second tooth grooves connected at intervals on the tooth plate, and the first and second tooth grooves are inclined and slid downward toward the discharge end respectively. During the process of crushing the grass by the hammer, the grass will be driven to slide down along the second tooth groove and be discharged toward the discharge port. Compared with the traditional second tooth groove inclined upward or horizontally arranged, it is conducive to improving the crushing efficiency of the grass, not easy to accumulate in the crushing chamber, and will not increase the load of the motor, which is conducive to improving the crushing efficiency of the grass and reducing energy consumption. Among them, when a higher quality crushing effect is required, the second tooth groove can be designed to be inclined corrugated.

[0020] 2. In the present application, the crushing device includes a rotating shaft driven by a motor, on which a cutter disc, a first flying disc, a second flying disc and a tail disc are fixed at intervals, and hammers and blades are arranged between the cutter disc and the first flying disc, between the first flying disc and the second flying disc, and between the second flying disc and the tail disc, which can not only increase the crushing of the grass, but also generate wind force to facilitate the discharge of the grass to the discharge end. Among them, the end of the hammer is bent, and along the circumferential direction, the ends of the hammers on the two adjacent support shafts are bent in opposite directions. The hammers with opposite bending directions can surround and beat the grass, which is beneficial to improve the crushing efficiency.

[0021] 3. The crushing device of the present application also includes a scraper and a counterweight. The scraper forms an acute angle with the length direction of the rotating shaft, which can push the grass pulp in the crushing chamber to move along the length direction of the rotating shaft, which is conducive to the discharge of the crushed grass from the discharge port and reduces the energy consumption of the crusher. The setting of the counterweight can increase the rotational inertia of the rotating shaft, and a lower motor can be used to drive the crushing device without the crushing device being easily stuck. That is, the overall energy consumption of the crushing device of the crusher is lower, and the grass pulp is not easy to stick or clog. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the pulverizer of the present invention.

[0023] Figure 2 It is a schematic diagram of the planar structure of the tooth plate of the present invention; wherein direction A is the direction of movement of the grass, and direction B is the direction of movement of the hammer.

[0024] Figure 3 It is a schematic diagram of the planar structure of a tooth plate according to another embodiment of the present invention.

[0025] Figure 4 It is a schematic diagram of the planar structure of a tooth plate according to another embodiment of the present invention.

[0026] Figure 5 It is a schematic diagram of the planar structure of a tooth plate according to another embodiment of the present invention.

[0027] Figure 6 Schematic diagram of the planar structure of the tooth plate of more embodiments of the present invention.

[0028] Figure 7 is with Figure 6 Schematic diagram of the planar structure of the matching tooth plate.

[0029] Figure 8 It is a schematic structural diagram of the pulverizing device of the present invention.

[0030] Fig. 9 It is a schematic diagram of the planar structure of the pulverizing device of the present invention.

[0031] Description of main reference numerals:

[0032] 1. Frame; 2. Motor; 3. Crushing device; 31. Rotating shaft; 32. Cutter disc; 33. First flying disc; 34. Second flying disc; 35. Tail disc; 351. Protrusion; 36. Hammer; 37. Blade; 38. Counterweight; 39. Support shaft; 4. Crushing chamber; 5. Feed inlet; 6. Discharge outlet; 7. Tooth plate; 71. First tooth groove; 72. Second tooth groove; 8. Cover plate; 9. Scraper. DETAILED DESCRIPTION

[0033] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation modes.

[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0035] It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, or are the orientation or positional relationship in which the invented product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0036] like Figure 1-9 As shown, a forage crusher equipped with a directional guide tooth plate includes a frame 1, a motor 2 and a crushing device 3, wherein the frame 1 is provided with a crushing chamber 4, the crushing chamber 4 is provided with a feed port 5 and a discharge port 6, the crushing device 3 is arranged in the crushing chamber 4, the motor 2 is arranged on the frame 1 outside the crushing chamber 4, the inner wall of the crushing chamber is provided with a tooth plate 7, and the tooth plate 7 is provided with tooth grooves at intervals. The motor 2 drives the crushing device 3 to operate through a transmission device, and the crushing device 3 includes a rotating shaft 31, a knife disc 32, a first flying disc 33, a second flying disc 34, a tail disc 35, a hammer 36, a blade 37, a counterweight 38, a support shaft 39 and a scraper 9. The crushing device 3 cooperates with the tooth plate 7 to crush the forage grass and discharge it from the discharge port 6.

[0037] Specifically, the tooth groove includes a first tooth groove 71 and a second tooth groove 72. The first tooth groove 71 is arranged near one end of the feed port to guide the feeding of forage. The first tooth groove 71 is arranged to slide downwardly toward the discharge end, and the second tooth groove 72 is also arranged to slide downwardly toward the discharge end. The length of the first tooth groove 71 is shorter than that of the second tooth groove 72. The second tooth groove 72 is a corrugated groove arranged to slide downwardly toward the discharge end, and the corrugation away from one end of the first tooth groove 71 is inclined upward. The tooth groove slides downward as a whole, and it is not easy to be blocked due to the feeding and discharge of forage. The angle of inclination of the tooth groove is an acute angle within 60°. The specific angle can be adjusted according to the crushing needs. For example, if the processed forage grass is used to feed chickens and ducks and other animals and needs to be crushed very finely, the inclination of the tooth groove can be reduced. If it is fed to cattle and sheep, the inclination can be increased to increase the crushing efficiency. Among them, the second tooth groove 72 adopts a corrugated design, which can be beneficial to improving the crushing effect and facilitating the discharge of materials. The end of the second tooth groove 72 is tilted, which is conducive to the discharge of the grass from the discharge port instead of accumulating on the tooth plate of the crushing chamber.

[0038] like Figure 3 As shown, in other embodiments, the second tooth groove 72 can also be configured as a smooth inclined groove, which can further improve the efficiency of crushing grass. The slope of the second tooth groove 72 can be smaller than the slope of the first tooth groove 71, and the length is longer than the first tooth groove 71. At the same time, the tooth surface of the second tooth groove 72 is configured to be sawtooth-shaped, and the combination of the inclined downward movement and the sawtooth shape can not only ensure the efficiency of crushing grass but also improve the efficiency of crushing grass.

[0039] like Figure 4 As shown, in other embodiments, the slope of the second tooth groove 72 is equal to the slope of the first tooth groove 71, and both are arranged to be inclined downward. At the same time, the lower parts of the first tooth groove 71 and the second tooth groove 72 are both serrated. The serrated tooth surface design is conducive to the crushing of grass. In other embodiments, the end of the second tooth groove 72, that is, the end away from the first tooth groove 71, can also be arranged to be tilted upward, which is conducive to the discharge of grass from the discharge port 6 instead of accumulating on the cavity wall of the crushing cavity 4.

[0040] like Figure 5 As shown, in other embodiments, the second tooth groove 72 is arranged in a stepped shape and tilted downward. Of course, the horizontal section of the step can also be designed to be an arc or have different slopes.

[0041] Figure 6 and Figure 7 Two tooth plates 7 in the same crushing chamber, Figure 7 The discharge port 6 is arranged on the upper surface. The second tooth grooves 72 of the two tooth plates 7 are inclined downward in a tooth shape as a whole, and at the same time, the tooth surface of the lower part of the second tooth groove 72 is set to be sawtooth-shaped. The sharp sawtooth surface of the tooth plate 7 interacts with the hammer piece 36 to crush the grass more thoroughly. The combination of step-down and sawtooth shape can not only ensure the crushing efficiency of the grass but also improve the crushing efficiency.

[0042] Furthermore, the tooth plate 7 is an arc-shaped steel sheet, and the tooth groove is hollowed out, and then the tooth plate 7 is fixed to the inner wall of the crushing chamber by welding. Since the crushing chamber is generally a transverse cylindrical shape and can be opened to install and maintain the crushing device, the tooth plate generally uses two arc-shaped steel sheets for easy opening and maintenance. Among them, the arc-shaped steel sheet at the bottom is provided with complete tooth grooves, and the arc-shaped steel sheet at the top is provided with a notch corresponding to the discharge port. Of course, in other embodiments, the tooth plate 7 can also be formed integrally with the cavity wall of the crushing chamber by casting.

[0043] Specifically, Figure 8-9 As shown, the rotating shaft 31 passes through the crushing chamber 4 and is driven by the motor 2. The cutter disc 32, the first flying disc 33, the second flying disc 34 and the tail disc 35 are fixed on the rotating shaft 31 in sequence. The cutter disc 32 is provided with moving knives at intervals. The counterweight 38 is fixed on the tail disc 35, and the blades 37 are provided between the cutter disc 32 and the first flying disc 33, between the first flying disc 33 and the second flying disc 34, and between the second flying disc 34 and the tail disc 35 at the end away from the feed port 5. The blades 37 are arranged at intervals along the outer periphery of the rotating shaft 31. In this embodiment, the blades 37 are provided with four pieces. In other embodiments, the blades 37 can also be provided with six pieces or other different numbers. Correspondingly, the hammer pieces are also provided with four groups. Specifically, a support shaft 39 is arranged between the knife disc 32 and the first flying disc 33, between the first flying disc 33 and the second flying disc 34, and between the second flying disc 34 and the tail disc 35. The hammers 36 are arranged on the support shaft 39. The hammers 36 are hinged to the support shaft 39 and can rotate around the support shaft 39. That is, when the knife disc 32, the first flying disc 33, the second flying disc 34, and the tail disc 35 rotate with the rotating shaft 31, the hammers 36 rotate around the support shaft 39 to further crush the grass. Figure 2 During the movement of the hammer 36, the grass is also driven to be transported to the discharge end. At the same time, the provision of the hammer 36 is conducive to increasing the moment of inertia of the crushing device 3, which is more conducive to the crushing of the grass. Preferably, the end of the hammer is bent, and along the circumferential direction, the ends of the hammers on the two adjacent support shafts are bent in opposite directions. The hammers with opposite bending directions can surround and beat the grass, which is conducive to improving the crushing efficiency. In other embodiments, a limit block can also be set on the support shaft 39 to limit the rotation amplitude of the hammer 36.

[0044] like Figure 8-9As shown, in other embodiments, the first flying disc and the second flying disc are respectively fixed with the scraper blades at intervals on their outer circumferences, and the scraper blades form an angle with the length direction of the rotating shaft 31, and the angle is an acute angle. Preferably, the angle is 3°-45°. The scraper blade forms an acute angle with the length direction of the rotating shaft, and the scraper blade can push the grass pulp in the crushing chamber to move along the length direction of the rotating shaft, which is conducive to the discharge of the crushed grass from the discharge port. Preferably, along the circumferential direction of the rotating shaft, the scraper blades are arranged at intervals to maintain the balance of the knife disc or flying disc, and along the length direction of the rotating shaft, two adjacent scraper blades are arranged at intervals of 90°, which is more conducive to the discharge of grass. Preferably, projected to the length direction of the rotating shaft 31, the first scraper blade 91 and the second scraper blade 92 are connected or partially overlapped. That is, the grass slurry can be transferred from the first scraper blade 91 to the second scraper blade 92, and the slurry is transferred to the discharge port 6.

[0045] Specific, combined Fig. 9 , the counterweight 38 is annular. The counterweight 38 is arranged on the outer periphery of the tail plate 35, away from the rotating shaft 31. The side of the tail plate 35 away from the feed port is also provided with a protrusion 351 with a threaded hole. The protrusion 351 is arranged on the inner side of the counterweight 38 and is arranged close to the counterweight 38. The height of the protrusion 351 is consistent with the height of the counterweight 38. Furthermore, it also includes a cover plate 8, which is arranged on the inner side of the counterweight 38. The cover plate 8 is provided with an axial hole and a screw hole. The axial hole of the cover plate 8 is sleeved on the outer periphery of the rotating shaft 31. The cover plate 8 is fixed to the protrusion of the tail plate by welding a nut at the threaded hole of the protrusion 351. The setting of the cover plate 8 can prevent forage from being inserted between the counterweight 38 ring and the rotating shaft 31 and affecting the operation of the rotating shaft 31.

[0046] Specifically, the annular counterweight 38 can be obtained by cutting a hollow tube, or by splicing a plurality of arc blocks. When the diameter of the counterweight 38 is small, it can be directly obtained by cutting a hollow tube. When the diameter of the counterweight 38 is large, it is preferably obtained by processing a plurality of arc blocks. A protrusion can be provided at one end of the arc block, and a groove can be provided at the other end of the arc block. The annular counterweight 38 can be spliced ​​by combining the protrusion and the groove. It can be further fixed by welding or other methods. In this embodiment, the counterweight 38 is fixed to the tail plate 35 by welding. Of course, in other embodiments, the counterweight 38 can also be fixed to the tail plate 35 by other existing methods.

[0047] When crushing the grass, the motor 2 is started to operate the crushing device 3. The grass is manually delivered to the feed port 5, and the grass enters the crushing chamber 4 and is crushed under the action of the crushing device 3. In the crushing chamber 4, the cutter disc 32 drives the moving knife to rotate, and the grass is initially crushed. The initially crushed grass passes through the perforations on the cutter disc 32 and enters between the cutter disc 32 and the first flying disc 33. The hammer 36 further crushes the grass, and the blade 37 provides wind force to move the grass from the end of the cutter disc 32 to the direction of the tail disc 35. The grass is transmitted along the gap between the outer end of the first flying disc 33 and the tooth plate 77 of the wall of the crushing chamber 4. The crushed grass is transmitted to between the first flying disc 33 and the second flying disc 34, and the hammer 36 and the blade 37 crush the grass again. The crushed grass is transmitted from the concave teeth at the outer end of the second flying disc 34, and the hammer 36 between the second flying disc 34 and the tail disc 35 crushes the grass again, and the grass is discharged from the discharge port 6. The present application provides inclined tooth grooves 91, which is conducive to the discharge of grass. Even forage with high humidity is not easy to stick to the inner wall of the crushing chamber after crushing, which solves the problem in the prior art that the crushed grass forms slurry and sticks to the inner wall of the crushing chamber due to high humidity and repeated crushing, thereby increasing the energy consumption of the motor and affecting the crushing efficiency of the grass. At the same time, by providing a counterweight 38 on the tail disc 35, the rotational inertia of the rotating shaft 31 can be increased, and a lower-power motor 2 can be used to drive the crushing device 3 without the crushing device 3 being easily stuck. Of course, in other embodiments, a larger number of flying discs can also be provided.

[0048] When the present grinder is used to grind corn stalks and other forage grasses with high water content, the grinding efficiency can be more than doubled compared with the existing grinders of the same power model in which the second tooth grooves 72 are horizontal and no counterweight is provided.

[0049] In summary, the tooth groove of the forage crusher is inclined toward the discharge end, which is conducive to the discharge of forage. The first tooth groove 71 is mainly used to guide materials such as forage into the crushing device, and the second tooth groove 72 can be combined with the crushing device to crush the forage, and is conducive to the discharge of forage to the discharge port, which is conducive to improving the crushing efficiency.

[0050] The foregoing description of specific exemplary embodiments of the present invention is for the purpose of illustration and demonstration. These descriptions are not intended to limit the present invention to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the present invention and various different selections and changes. The scope of the present invention is intended to be limited by the claims and their equivalents.

Claims

1. A forage crusher equipped with a directional guide tooth plate, comprising a frame, a motor and a crushing device, wherein the frame is provided with a crushing chamber, the crushing chamber is provided with a feed inlet and a discharge port, the crushing device is arranged in the crushing chamber, the inner wall of the crushing chamber is provided with a tooth plate, and the tooth plate is provided with tooth grooves at intervals, characterized in that: The tooth groove comprises a first tooth groove and a second tooth groove, wherein the first tooth groove is arranged at one end close to the feed port, the first tooth groove is arranged to slide downwardly and obliquely toward the discharge end, and the second tooth groove is also arranged to slide downwardly and obliquely toward the discharge end, the length of the first tooth groove is shorter than the length of the second tooth groove, and the second tooth groove is a stepped groove arranged to slide downwardly and obliquely toward the discharge end; the second tooth groove is bent upwardly and obliquely away from one end of the first tooth groove, and the length of the bend is shorter than the length of the remaining part of the second tooth groove; the tooth surface of the second tooth groove is serrated; The crushing device comprises a rotating shaft, a cutter disc, a first flying disc, a second flying disc, a tail disc, blades, hammers and a support shaft, wherein the cutter disc, the first flying disc, the second flying disc and the tail disc are fixed on the rotating shaft in sequence at intervals; the cutter disc is provided with movable knives at intervals; the blades are respectively provided between the cutter disc and the first flying disc, between the first flying disc and the second flying disc, and between the second flying disc and the tail disc, and the blades are provided at intervals along the outer periphery of the rotating shaft; the support shaft is also provided at intervals between the cutter disc and the first flying disc, between the first flying disc and the second flying disc, and between the second flying disc and the tail disc, and the hammers are provided at intervals on the support shaft, and the hammers are hinged to the support shaft and can rotate around the support shaft.

2. The forage crusher equipped with a directional guide tooth plate according to claim 1, characterized in that: The inclination angle of the tooth groove is an acute angle within 60°.

3. The forage crusher equipped with a directional guide tooth plate according to claim 1, characterized in that: The ends of the hammer pieces are bent, and along the circumferential direction, the bending directions of the ends of the hammer pieces on two adjacent support shafts are opposite.

4. The forage crusher equipped with a directional guide tooth plate according to claim 1, characterized in that: The crushing device also includes a scraper, which is respectively arranged between the knife disc and the first flying disc and between the first flying disc and the second flying disc, or the scraper is arranged at intervals on the outer periphery of the first flying disc and the second flying disc, and the scraper forms an angle with the length direction of the rotating shaft, and the angle is an acute angle.

5. The forage crusher equipped with a directional guide tooth plate according to claim 1, characterized in that: A counterweight is also provided on the outer periphery of the tail plate.

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