Blanking anti-blocking device for agricultural product feed mechanized processing production and use method

Abstract

The invention relates to the technical field of agricultural product mechanical processing, and discloses a discharging anti-blocking device for agricultural product feed mechanical processing production and a using method, the discharging anti-blocking device comprises a three-section type feeding pipe, an operation pipe and a smashing pipe, and the top of the feeding pipe is obliquely open; a plurality of anti-blocking grass pulling assemblies for hooking feed residues and grass are installed in the operation pipe, and a grass smashing assembly is installed between the anti-blocking grass pulling assemblies in the same row. Through the ingeniously-designed linkage system of the grass smashing assemblies and the anti-blocking grass pulling assemblies, the multiple assemblies can be driven to work cooperatively only through one second motor; when the cutting cutterhead rotates, the anti-blocking grass pulling assembly can move in a reciprocating mode, feed residues and grass possibly causing blockage of the smashing mechanism are effectively hooked up and treated, therefore, the anti-blocking efficiency is remarkably improved, the risk that the smashing mechanism is damaged due to overload is also avoided through a stable transmission system and an anti-blocking mechanism, and production continuity and stability are guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of solid pre-crushing components, and specifically to a material discharge anti-blocking device and a use method for mechanized processing and production of agricultural product feed. Background Art

[0002] Livestock grass feed refers to various grasses and other plant feeds used to feed animals in animal husbandry. It includes not only naturally grown herbs, such as forage grass, silage corn, etc., but also processed feeds, such as hay, silage, and concentrated feed. Livestock grass feed is the main food source for livestock, providing livestock with necessary nutrients such as protein, minerals, and vitamins. Reasonable livestock grass feed mix can improve livestock production performance, such as increasing milk production and improving meat quality.

[0003] In the processing of existing livestock feed, it is necessary to put a variety of raw materials into a grinder for mixing and crushing. However, due to the presence of rod-shaped, strip-shaped and other fibrous plants such as grass and straw, the grinder alone is prone to blockage. At this time, it is necessary to manually clean the feed or use a metal hook to dredge the blocked part. However, this will result in poor production and processing effects and easily burn out the grinding motor. Therefore, a feed feeding anti-blocking device and a use method for mechanized processing of agricultural product feed are provided to solve the above-mentioned problems. Summary of the invention

[0004] In order to solve the problem that the existing material unloading anti-blocking device for mechanized processing and production of agricultural products and feeds easily blocks the slurry pump from pumping water during crushing, the present invention provides a material unloading anti-blocking device for mechanized processing and production of agricultural products and feeds and a use method to solve the above problem.

[0005] To achieve the above object, the present invention provides the following technical solutions: A feed blocking prevention device for mechanized processing of agricultural product feed comprises a three-section feed pipe, an operating pipe and a crushing pipe, wherein the top of the feed pipe is inclined and open; The operating tube is internally provided with a plurality of anti-blocking and weed-pulling components for picking up feed residue and weed, and a weed-pulling component is installed between the same row of anti-blocking and weed-pulling components; A pulverizing mechanism for cutting feed is installed inside the pulverizing tube, and a plurality of anti-blocking and weed-pulling components are located directly above the pulverizing mechanism.

[0006] Preferably, the crushing mechanism includes a first motor and two first rotating rods, the output shaft of the first motor is connected to one end of the adjacent first rotating rod through a coupling, and a transmission gear plate is fixed on one end of the two first rotating rods away from the first motor, the two transmission gear plates are meshed with each other, and the two first rotating rods are located on the surface of the crushing tube and are equipped with multiple staggered crushing teeth.

[0007] Preferably, two material guide plates are installed on the inner wall of the pulverizing tube.

[0008] Preferably, the anti-blocking and grass-clearing assembly includes a limiting rod, the bottom of the limiting rod is slidably connected to a lifting rod, the lifting rod is rotatably connected to a hinge shaft, a grass-lifting plate is installed on the hinge shaft, and a torsion spring is also fixed on the hinge shaft, one end of the torsion spring is fixed to the lifting rod, and the other end of the torsion spring is fixed to the hinge shaft.

[0009] Preferably, the initial position of the grass lifting board after pressure is applied by the torsion spring is arranged perpendicular to the lifting rod.

[0010] Preferably, a slot is provided on the lifting rod, and the retracted position of the grass lifting plate after pressure is applied by the feed residue is to be inserted into the slot.

[0011] Preferably, the forage crushing assembly comprises a second motor, four second rotating rods and a third rotating rod arranged perpendicular to the four second rotating rods, the second rotating rod and the third rotating rod are both installed with conical gear rings on adjacent sides, two adjacent conical gear rings are meshed with each other, the ends of the four third rotating rods away from the second rotating rods are all rotatably connected to the first linkage rod, the bottoms of the four first linkage rods are all rotatably connected to the second linkage rod, and the bottom ends of the four second linkage rods are all connected to the adjacent lifting rods; Wherein, the bottom end of each of the second rotating rods is rotatably connected to a cutting disc.

[0012] Preferably, pulleys are installed on the four second rotating rods, and a transmission belt is provided between two adjacent pulleys, and two adjacent pulleys are connected by the transmission belt.

[0013] Preferably, a support frame is fixed to the top of the second motor, the other end of the support frame is fixed to the anti-blocking and grass-clearing component, the top of the support frame is fixed to the top of the inner wall of the feed pipe, and the bottom of the support frame is rotatably connected to the adjacent third rotating rod.

[0014] A method for using a feed blocking prevention device for mechanized processing of agricultural product feed, the method comprising the following steps: Step A, assemble the feed pipe and the operating pipe into the outer shell using screws.

[0015] Step B, pouring the feed residue grass from the inclined opening of the feed pipe, and under the action of gravity, the feed residue grass gradually enters the crushing pipe through the operating pipe, and the first motor drives the crushing teeth to rotate, and under the guidance of the guide plate, the two crushing teeth crush the feed residue grass; Step C: When a long or unbroken part of the feed residue is stuck in the operating tube, the second motor is started. The second motor, through the cooperation of multiple pulleys and a transmission belt, drives the third rotating rod to drive the first linkage rod to rotate in a circle, and pulls the lifting rod to reciprocate up and down through the second linkage rod; Step C1, when the lifting rod drives the grass lifting board to descend, it will be squeezed by the fodder residue and will be retracted into the card slot, and the grass lifting board will be retracted through the hinge shaft support, and when it reaches the position closest to the crushing mechanism, it will rise. At this time, the grass lifting board will extend and pull the fodder residue near the crushing mechanism, driving it to rise and approach the cutting disc for further shredding, preventing large particles and large diameter fodder residue from being blocked in the crushing mechanism and causing the first motor to be overloaded and damaged. Step D, the chopped feed residue grass is discharged from the crushing pipe.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention cleverly designs a linkage system between the forage crushing component and the anti-blocking and weeding component. Only a second motor is needed to drive multiple groups of components to work together. While the cutting disc rotates, the anti-blocking and weeding component can reciprocate to effectively pick up and process the feed residue and grass that may cause blockage of the crushing mechanism, thereby significantly improving the anti-blocking efficiency.

[0017] The present invention can ensure that no large particles or long poles appear when processing feed residues and grass, effectively improving the quality of finished agricultural product feed. At the same time, its stable transmission system and anti-blocking mechanism also avoid the risk of damage to the crushing mechanism due to overload, ensuring the continuity and stability of production.

[0018] The staggered crushing teeth of this crushing mechanism itself can forcibly crush and press down the feed residue when cutting it. This can effectively prevent the feed from piling up above the two first rotating rods when facing the feed grass, and the guide plate guides the material to prevent the crushing mechanism from being hit to a place where the two crushing teeth cannot cut during the cutting operation. It can cooperate with the anti-blocking grass-clearing component and the grass crushing component to better prevent grass blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 is a stereogram of the present invention from a first viewing angle; Figure 2 is a stereogram of the second viewing angle of the present invention; Figure 3 It is a stereoscopic diagram of the present invention from a first viewing angle after the operating tube is removed; Figure 4 It is a stereoscopic diagram of the present invention from a second viewing angle after the operating tube is removed; Figure 5 is a stereoscopic diagram of the anti-blocking assembly of the present invention; Figure 6 It is a three-dimensional diagram of a set of anti-blocking and grass-clearing components connected with a grass crushing component in the present invention; Figure 7 is a stereoscopic diagram of the anti-blocking and weed-clearing component of the present invention; Figure 8 It is a three-dimensional diagram of the cutting blade disc in the present invention.

[0021] The meanings of the reference numerals in the figure are as follows: 1. Feed pipe; 2. Operating pipe; 3. Crushing pipe; 4. Crushing mechanism; 41. First motor; 42. First rotating rod; 43. Transmission gear disc; 44. Crushing teeth; 45. Material guide plate; 5. Anti-blocking grass-clearing assembly; 51. Limit rod; 52. Lifting rod; 53. Articulated shaft; 54. Grass-lifting board; 55. Slot; 56. Torsion spring; 6. Grass-crushing assembly; 61. Second motor; 62. Second rotating rod; 63. Conical gear ring; 64. Cutting disc; 65. First linkage rod; 66. Third rotating rod; 67. Second linkage rod; 68. Pulley; 69. Transmission belt; 7. Support frame. DETAILED DESCRIPTION

[0022] In order to make the purpose, features, and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the embodiments described below are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0023] Reference Figures 1 to 8 , a feed blocking prevention device for mechanized processing of agricultural product feed, comprising a three-section feed pipe 1, an operation pipe 2 and a crushing pipe 3, wherein the top of the feed pipe 1 is inclined and open; A plurality of anti-blocking and grass-pulling components 5 for picking up feed residues and grass are installed inside the operating tube 2, and a grass crushing component 6 is installed between the same row of anti-blocking and grass-pulling components 5; A pulverizing mechanism 4 for cutting feed is installed inside the pulverizing tube 3 , and a plurality of anti-blocking and weed-pulling components 5 are located directly above the pulverizing mechanism 4 .

[0024] In this embodiment, the crushing mechanism 4 includes a first motor 41 and two first rotating rods 42. The output shaft of the first motor 41 is connected to one end of the adjacent first rotating rod 42 through a coupling. A transmission gear plate 43 is fixed to the end of the two first rotating rods 42 away from the first motor 41. The two transmission gear plates 43 are meshed with each other. The two first rotating rods 42 are located on the surface of the crushing tube 3 and are equipped with multiple staggered crushing teeth 44; two material guide plates 45 are installed on the inner wall of the crushing tube 3.

[0025] The staggered arrangement of the crushing mechanism 4 itself serves to crush and press down the fodder residue when cutting it, so that when facing the fodder grass, it can effectively prevent the fodder from stacking above the two first rotating rods 42, and the material guide plate 45 guides the material to prevent the crushing mechanism 4 from being hit to a place where the two crushing teeth 44 cannot cut during the cutting operation.

[0026] In this embodiment, the anti-blocking and grass-clearing component 5 includes a limiting rod 51, the bottom of the limiting rod 51 is slidably connected to a lifting rod 52, the lifting rod 52 is rotatably connected to a hinge shaft 53, a grass-lifting plate 54 is installed on the hinge shaft 53, and a torsion spring 56 is also fixed on the hinge shaft 53, one end of the torsion spring 56 is fixed to the lifting rod 52, and the other end of the torsion spring 56 is fixed to the hinge shaft 53.

[0027] The anti-blocking grass-pulling component 5 itself is a structure for hooking up the feed residue grass. In the process of cooperating with the grass crushing component 6, the lifting rod 52 can be raised and lowered by the limit rod 51. In this process, the initial position of the grass-lifting plate 54 after the torsion spring 56 applies pressure is set perpendicular to the lifting rod 52. The torsion spring 56 allows the grass-lifting plate 54 to maintain the final vertical operation. In this way, when the feed residue grass is hooked up, the feed residue grass can be driven to move up until the feed residue grass is completely in contact with the cutting blade 64 and cut, and the grass-lifting plate 54 is just Located directly below the cutting disc 64, the flat grass lifting board 54 can pick up as much feed residue as possible for processing without touching the cutting disc 64, thereby preventing the feed residue from being blocked above the crushing mechanism 4. During the descent process, in order to prevent the feed residue from laterally squeezing the grass lifting board 54, the grass lifting board 54 will be retracted into the card slot 55 when subjected to upward pressure. The lifting rod 52 is provided with a card slot 55, and the retracted position of the grass lifting board 54 after the pressure applied by the feed residue is stuck in the card slot 55, thereby ensuring the stability of the overall operation.

[0028] The forage crushing assembly 6 includes a second motor 61, four second rotating rods 62, and a third rotating rod 66 arranged perpendicular to the four second rotating rods 62. Conical gear rings 63 are installed on adjacent sides of the second rotating rod 62 and the third rotating rod 66. Two adjacent conical gear rings 63 are meshed with each other. The ends of the four third rotating rods 66 away from the second rotating rod 62 are rotatably connected to the first linkage rod 65. The bottoms of the four first linkage rods 65 are rotatably connected to the second linkage rod 67. The bottom ends of the four second linkage rods 67 are connected to adjacent lifting rods 52. Among them, the bottom end of each second rotating rod 62 is rotatably connected to the cutting disc 64. Pulleys 68 are installed on the four second rotating rods 62, and a transmission belt 69 is arranged between two adjacent pulleys 68. The two adjacent pulleys 68 are connected through the transmission belt 69.

[0029] The design of the forage crushing component 6 can provide the anti-blocking grass-clearing component 5 with the lifting and lowering to lift the feed residue and grass, and then link the cutting disc 64 to cut, and only needs a second motor 61 to drive multiple groups of forage crushing components 6 and the anti-blocking grass-clearing components 5 to cooperate with each other. When the cutting disc 64 rotates, the anti-blocking grass-clearing component 5 can also reciprocate to pick up the feed residue and grass that may cause the crushing mechanism 4 to be blocked or stuck. The integrated operation makes the whole more reliable when working.

[0030] In this embodiment, a support frame 7 is fixed to the top of the second motor 61, the other end of the support frame 7 is fixed to the anti-blocking grass-clearing component 5, the top of the support frame 7 is fixed to the top of the inner wall of the feed pipe 1, and the bottom of the support frame 7 is rotatably connected to the adjacent third rotating rod 66; A plurality of support frames 7 fix the anti-blocking and grass-clearing assembly 5 and the grass crushing assembly 6 on the top of the inner wall of the operating tube 2, and the shape of the support frames 7 can be changed according to actual needs, so that the operating height and operating angle of the anti-blocking and grass-clearing assembly 5 and the grass crushing assembly 6 can be adjusted, thereby meeting the blockage conditions of more different types of feed residues and grass.

[0031] The method for using the feed blocking prevention device for mechanized processing of agricultural product feed includes the following steps: Step A, assemble the feed pipe 1 and the operating pipe 2 into the housing using screws.

[0032] Step B, feed residue grass is poured into the inclined opening of the feed pipe 1, and under the action of gravity, the feed residue grass gradually passes through the operating pipe 2 and enters the crushing pipe 3, the first motor 41 drives the crushing teeth 44 to rotate, and under the guiding action of the guide plate 45, the two crushing teeth 44 crush the feed residue grass; Step C: When a long or unbroken part of the feed residue is stuck in the operating tube 2, the second motor 61 is started. The second motor 61 drives the first linkage rod 65 to rotate in a circle through the third rotating rod 66 through the cooperation of multiple pulleys 68 and a transmission belt 69, and pulls the lifting rod 52 to reciprocate up and down through the second linkage rod 67; Step C1, when the lifting rod 52 drives the grass lifting board 54 to descend, it will be retracted into the card slot 55 after being squeezed by the feed residue, and the grass lifting board 54 will be recovered by supporting the hinge shaft 53. When it reaches the position closest to the crushing mechanism 4, it will rise. At this time, the grass lifting board 54 will extend out and pull the feed residue close to the crushing mechanism 4, driving it to rise while approaching the cutting disc 64 for further chopping, preventing large particles and large diameter feed residue from being blocked in the crushing mechanism 4 and causing overload and damage to the first motor 41.

[0033] Step D: the chopped feed residue is discharged from the crushing pipe 3.

[0034] Furthermore, the feed residue is a nutritious feed made from a mixture of straw, wheat, forage grass and other livestock edible forage, wheat bran and tofu dregs. As a whole, it is a kind of finished agricultural product. The agricultural product feed after mechanized processing can be directly used in animal husbandry, which is more convenient and has higher economic benefits.

[0035] Usage and working principle: When the device is working, feed residue grass is poured from the inclined opening of the feed pipe 1. Under the action of gravity, the feed residue grass gradually enters the crushing tube 3 through the operating tube 2. The first motor 41 drives the first rotating rod 42 to rotate. Under the meshing of the two transmission gear plates 43, the two first rotating rods 42 drive the crushing teeth 44 to rotate and cut the feed residue grass. Under the diversion effect of the guide plate 45, the two crushing teeth 44 crush all the feed residue grass passing through the crushing tube 3. When there are longer or unbroken parts of the feed residue grass blocked in the operating tube 2, the second motor 61 is started. After the second motor 61 rotates, through the transmission cooperation of multiple pulleys 68 and transmission belts 69, all the second rotating rods 62 rotate, and the meshing of the conical gear ring 63 allows the second rotating rod 62 to also drive the third rotating rod 66 to rotate, and the third rotating rod 66 drives the first linkage rod 65 to rotate in a circle to link the second linkage rod 67 to pull the lifting rod 52 to reciprocate up and down; When the lifting rod 52 drives the grass lifting plate 54 to descend, the grass residue will be squeezed by the grass residue and will be retracted into the card slot 55, and the grass lifting plate 54 will be recovered by the hinge shaft 53. When the grass lifting plate 54 reaches the position closest to the crushing mechanism 4, the grass lifting plate 54 will rise. At this time, the grass lifting plate 54 will extend out and pull the grass residue near the crushing mechanism 4, driving it to rise and further chop it near the cutting disc 64, preventing large particles and large diameter feed residue from being blocked in the crushing mechanism 4 and causing the first motor 41 to be overloaded and damaged. Under this operation mode, no matter how much feed residue is put into the feed pipe 1 at one time, the crushing mechanism 4 will not be blocked or damaged. The processed feed residue ensures that there are no large particles and long rods, further improving the quality of the entire finished agricultural product feed.

[0036] It will be apparent to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes within the meaning and scope of the equivalent elements of the claims be included in the present application. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0037] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some of the technical features therein by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A device for preventing material blocking during mechanized processing of agricultural product feed, comprising a three-stage feeding pipe (1), an operating pipe (2) and a crushing pipe (3), characterized in that: The top of the feed pipe (1) is inclined and open; A plurality of anti-blocking and weed-pulling components (5) for picking up fodder residue and weeds are installed inside the operating tube (2), and a weed-pulling component (6) is installed between the same row of anti-blocking and weed-pulling components (5); A pulverizing mechanism (4) for cutting feed is installed inside the pulverizing tube (3), and a plurality of anti-blocking and weed-pulling components (5) are located directly above the pulverizing mechanism (4).

2. The device for preventing material blocking in mechanized processing of agricultural products and feed according to claim 1 is characterized in that: The pulverizing mechanism (4) comprises a first motor (41) and two first rotating rods (42); the output shaft of the first motor (41) is connected to one end of an adjacent first rotating rod (42) via a coupling; a transmission toothed disc (43) is fixed to one end of the two first rotating rods (42) away from the first motor (41); the two transmission toothed discs (43) are meshed with each other; and a plurality of staggered pulverizing teeth (44) are mounted on the surface of the two first rotating rods (42) located on the pulverizing tube (3).

3. The device for preventing material blocking in mechanized processing of agricultural products and feed according to claim 1 is characterized in that: Two material guide plates (45) are installed on the inner wall of the pulverizing tube (3).

4. The device for preventing material blocking in mechanized processing of agricultural products and feed according to claim 1 is characterized in that: The anti-blocking and grass-clearing component (5) comprises a limiting rod (51), the bottom of which is slidably connected to a lifting rod (52), the lifting rod (52) being rotatably connected to a hinge shaft (53), a grass-lifting plate (54) being mounted on the hinge shaft (53), a torsion spring (56) being fixed to the hinge shaft (53), one end of the torsion spring (56) being fixed to the lifting rod (52), and the other end of the torsion spring (56) being fixed to the hinge shaft (53).

5. The device for preventing material blocking in mechanized processing of agricultural products and feed according to claim 4 is characterized in that: The initial position of the grass lifting board (54) after pressure is applied by the torsion spring (56) is arranged perpendicular to the lifting rod (52).

6. The device for preventing material blocking in mechanized processing of agricultural products and feed according to claim 4 is characterized in that: The lifting rod (52) is provided with a slot (55), and the grass lifting plate (54) is in a retracted position after pressure is applied by the fodder grass residues so as to be inserted into the slot (55).

7. The device for preventing material blocking in mechanized processing of agricultural products and feed according to claim 4 is characterized in that: The forage crushing assembly (6) comprises a second motor (61), four second rotating rods (62), and a third rotating rod (66) arranged perpendicular to the four second rotating rods (62); conical toothed rings (63) are installed on adjacent sides of the second rotating rods (62) and the third rotating rods (66); two adjacent conical toothed rings (63) are meshed with each other; one end of the four third rotating rods (66) away from the second rotating rods (62) is rotatably connected to a first linkage rod (65); the bottoms of the four first linkage rods (65) are rotatably connected to a second linkage rod (67); and the bottoms of the four second linkage rods (67) are connected to adjacent lifting rods (52); The bottom end of each second rotating rod (62) is rotatably connected to a cutting blade disc (64).

8. The device for preventing material blocking in mechanized processing of agricultural products and feed according to claim 7, characterized in that: The four second rotating rods (62) are each mounted with a pulley (68), and a transmission belt (69) is provided between two adjacent pulleys (68). The two adjacent pulleys (68) are connected in transmission via the transmission belt (69).

9. The device for preventing material blocking in mechanized processing of agricultural products and feed according to claim 7, characterized in that: A support frame (7) is fixed on the top of the second motor (61), the other end of the support frame (7) is fixed to the anti-blocking and weed-clearing component (5), the top of the support frame (7) is fixed to the top of the inner wall of the feed pipe (1), and the bottom of the support frame (7) is rotatably connected to an adjacent third rotating rod (66).

10. The method for using the device for preventing material blocking in mechanized processing of agricultural products and feeds is characterized by: The method of use comprises the following steps: Step A, assembling the feed pipe (1) and the operating pipe (2) into a housing using screws; Step B, feed residue grass is poured into the inclined opening of the feed pipe (1), and under the action of gravity, the feed residue grass gradually passes through the operating pipe (2) and enters the crushing pipe (3), the first motor (41) drives the crushing teeth (44) to rotate, and under the guidance of the guide plate (45), the two crushing teeth (44) crush the feed residue grass; Step C: when a relatively long or unbroken portion of the fodder grass residue is stuck in the operating tube (2), the second motor (61) is started, and the second motor (61) cooperates with a plurality of pulleys (68) and a transmission belt (69) to drive the third rotating rod (66) to drive the first linkage rod (65) to rotate in a circle, and the lifting rod (52) is pulled to reciprocate up and down through the second linkage rod (67); Step C1, when the lifting rod (52) drives the grass lifting board (54) to descend, the grass residues are squeezed by the grass residues and then retracted into the slot (55), and the grass lifting board (54) is supported by the hinge shaft (53) for recovery. When it reaches the position closest to the crushing mechanism (4), it rises. At this time, the grass lifting board (54) extends out and pulls the grass residues near the crushing mechanism (4), driving it to rise and approach the cutting blade (64) for further shredding, thereby preventing large particles and large diameter grass residues from being blocked in the crushing mechanism (4) and causing the first motor (41) to be overloaded and damaged. Step D: the chopped feed residue is discharged from the pulverizing pipe (3).

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