Knife grinding mechanism and green and yellow feed harvester thereof
The angle adjustment and dynamic adaptability of the knife sharpening mechanism solves the problem of poor sharpening results caused by fixed angles, achieving efficient and uniform grinding and spark cleaning of the chopping knife, and improving the performance of the green and yellow forage harvester.
Patent Information
- Application Number
- CN202511244663.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-02
- Publication Date
- 2025-10-03
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In the prior art, the fixed-angle sharpening process results in poor sharpening effect, which affects the sharpness of the chopping blade of the green and yellow forage harvester and the use effect.
Adopting angle adjustment unit and dynamic applicable components, the transmission chain unit drives the sharpening feed unit and the sharpening block to move linearly and adjust the angle. Combined with the auxiliary air blowing component to clean sparks, dynamic grinding and uniform grinding of the chopping knife are achieved.
It improves the smoothness and sharpness consistency of the cutting edge of the shredder, eliminates the grinding blind area, reduces the adhesion of sparks, improves the grinding effect and product applicability, and protects the hardness and mechanical strength of the blade.
Smart Images
Figure CN120734828A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of green and yellow fodder, and in particular relates to a knife sharpening mechanism and a green and yellow fodder harvester. Background Art
[0002] Green fodder usually refers to fresh or semi-dry plant feed used for making silage or direct feeding. In order to ensure the harvesting effect of green fodder, it is often cut and chopped by a harvester. The body of the green fodder harvester consists of a traveling device, a harvesting platform, a conveying and feeding device, a chopping device and a throwing device. The chopping knife of the chopping device will wear out during long-term use. At this time, a sharpening mechanism is required to ensure its sharpness during use.
[0003] However, in the prior art, during use, the blade sharpening unit is often driven to move linearly through a transmission chain system or a linear motion system, so that the blade sharpening unit grinds the surface of the chopping knife at a fixed angle of linear motion. The blade of the chopping knife will produce different degrees of wear during use. The fixed-angle sharpening process results in poor sharpening effect on the blade, which in turn affects the sharpening effect of the product. Therefore, improvement is needed. Summary of the Invention
[0004] The purpose of the present invention is to propose a knife sharpening mechanism and a green and yellow fodder harvester thereof in order to solve the problem that the fixed-angle knife sharpening process in the prior art leads to poor knife sharpening effect on the blade, which in turn affects the knife sharpening effect of the product.
[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A knife sharpening mechanism and a green and yellow forage harvester thereof, comprising two fixed arms, a chopping unit being rotatably connected between the two fixed arms, and further comprising: A connecting plate is fixedly connected between the two supporting arms, and a linear moving module is provided on one side of the connecting plate through a connecting seat; A fixing base is provided between the two supporting arms, and a horizontal circular through hole is provided on one side of the fixing base, and a vertical circular through hole is provided on one side of the fixing base; The knife sharpening and feeding unit is installed inside the vertical circular through hole, and the diameter of the knife sharpening and feeding unit is smaller than the diameter of the vertical circular through hole; The sharpening block is installed at the center of the sharpening feed unit, and the sharpening feed unit is slidably connected to the inside of the sharpening feed unit; An angle adjustment unit is installed on one side of the sharpening feed unit and is used to drive the sharpening feed unit to rotate around the vertical circular through hole; A dynamically adaptable component, installed inside the angle adjustment unit, for adaptively adjusting the angle rotation of the angle adjustment unit; The auxiliary air blowing assembly is installed on one side of the angle adjustment unit and is used to rotate with the angle adjustment unit and blow air to clean the sharpening block and the chopping unit.
[0006] As a further description of the above technical solution: The angle adjustment unit includes: A mounting sleeve is mounted on the outer peripheral side of the sharpening feed unit and is located below the fixing seat, wherein a first air blowing channel is opened inside the mounting sleeve; The connecting block is fixed to one side of the outside of the mounting sleeve, and a second air blowing channel is opened inside the connecting block, and the second air blowing channel is connected to the first air blowing channel; The sliding frame is located between the two support arms, and one side of the sliding frame is fixedly connected to the outer wall of the connecting plate. The sliding frame is arranged on the side away from the linear moving module, and a sliding groove for sliding connection of the connecting block is opened on the side of the sliding frame opposite to the connecting block.
[0007] As a further description of the above technical solution: The angle adjustment unit also includes The two first travel sections are symmetrically mounted on both sides of the sliding frame, and an oblique shape is provided on the opposite side of the two first travel sections. The bottom of the first travel section is slidably connected to the sliding frame through a support frame, and a linear moving unit is provided below the support frame; The second travel section is arranged between the two first travel sections, and the second travel section is arranged in an oblique shape relative to one side of the first travel section; The limiting rod is fixed to one side of the bottom of the connecting block, and the limiting rod is slidably connected to the inside of the first travel section and the second travel section.
[0008] As a further description of the above technical solution: The angle adjustment unit further includes: A limit frame is installed on the top of the fixing seat, and the limit frame and the vertical circular through hole are on the same axis, and a first through hole with the same diameter as the vertical circular through hole is opened inside the limit frame; A plurality of connecting sleeves are distributed in a circular array on the inner circumference of the limiting frame; A plurality of springs are distributed in a circular array on the inner circumference of the limit frame, and one side of the spring is fixedly connected to one side of the inner wall of the connecting sleeve; A plurality of circular plates are distributed in a circular array on the inner circumference of the limiting frame, and the circular plates are slidably connected to the interior of the limiting frame; A plurality of sliding rods, one end of which is fixedly connected to the plurality of circular plates respectively, and the sliding rods are slidably connected to the interior of the limit frame; Multiple rollers are distributed in a circular array inside the limit frame, and one side of the rollers is fixedly connected to the sliding rod; The limiting block is arranged above the plurality of rollers and sleeved on the outer peripheral side of the knife sharpening feeding unit.
[0009] As a further description of the above technical solution: The angle adjustment unit further includes: A limiting sleeve is fixed to the bottom of the sharpening feed unit, and the limiting sleeve is arranged on the outer peripheral side of the sharpening block; The rotating sleeve rotates inside the limiting sleeve, and a limiting unit is provided on the top of the rotating sleeve. The limiting unit is provided inside the limiting sleeve, and two arc-shaped sliding grooves are provided in a circumferential array on the inner circumference of the rotating sleeve; A connecting sleeve is slidably connected to the inner circumference of the connecting sleeve, and a circumferential array of two arc blocks is formed on the outer circumference of the connecting sleeve, wherein the arc blocks are slidably connected to the inside of the arc chute, and the inner circumference of the arc blocks is fixedly connected to the outer wall of the sharpening block; The gear is sleeved on the outer bottom side of the rotating sleeve; Two racks are arranged on one side of the gear, and opposite sides of the two racks are fixedly connected to the support arm.
[0010] As a further description of the above technical solution: The dynamically applicable components include: An electric push rod, one side of which is fixed inside the support frame, and one end of the output shaft of the electric push rod is fixedly connected to the outer wall of the second stroke section; Two limit grooves are provided at the oblique position of the first stroke section; The two limiting sliders are slidably connected to the interior of the limiting groove, and one side of the limiting slider is fixedly connected to the outer wall of the second stroke section.
[0011] As a further description of the above technical solution: The auxiliary blowing component includes: Two limiting slides are both located on the top side of the connecting block; Two sliding blocks are slidably connected inside the two limiting sliding grooves respectively; The air delivery frame has an air supply channel on one side, and the air delivery channel is arranged on the top side of the sliding frame; Two protective shrinkage layers are fixedly connected to the outer wall of the air delivery frame on opposite sides, and the protective shrinkage layers are arranged inside the air supply channel to ensure that the air delivery frame slides and is closed inside the air supply channel; An air delivery hose, the top end of which is connected to the air delivery frame, and the bottom end of which is connected to the second air blowing channel inside the connecting block; A plurality of nozzles are distributed in a circular array on the bottom side of the mounting sleeve, and the top ends of the nozzles are connected to the first blowing channel.
[0012] As a further description of the above technical solution: Two trigger units are symmetrically installed on one side of the inner portion of the two support arms, and the trigger units are arranged on one side of the sharpening feed unit; The transmission chain unit is installed on one side of the connecting plate, and the transmission chain unit is connected to the fixed seat through the mounting seat, and is used to drive the fixed seat, the sharpening feed unit and the sharpening block to rotate.
[0013] As a further description of the above technical solution: A guide rod is fixed between the two support arms and is slidably connected to the inside of a transverse circular through hole opened inside the fixing base, and is used to cooperate with the transmission chain unit to ensure the movement stability of the fixing base; A protective cover is installed between the two fixed arms, and a second through hole is opened on the top side of the inner portion of the protective cover, and the second through hole and the sharpening block are on the same axis; The flip cover is hinged inside the second through hole, and a flip push rod is provided on one side of the top of the flip cover through a hinge seat. The flip push rod is fixedly connected to the outer wall of the protective cover through an arc seat.
[0014] As a further description of the above technical solution: The harvester body is mounted outside the fixed arm and chopping unit; The cutting platform is set on the front side of the harvester body and is used to support and install the external guide cutting wheel; The feeding unit is arranged between the cutting table and the chopping unit, and is used to transport the cut materials on the cutting table to the chopping unit; The walking mechanism is installed at the bottom of the harvester body and is used to drive the harvester body to move.
[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In the present invention, through the angle adjustment unit, when the chopping knife on the chopping unit is worn after long-term use, the transmission chain unit drives the fixing seat, the knife sharpening feed unit and the knife sharpening block to move and perform linear sharpening on the chopping unit. During this process, the linear moving unit drives the support frame, the first stroke section and the second stroke section to move upward. At this time, the limit rod will gradually move from the first stroke section to the inside of the second stroke section, which will cause the connecting block to drive the mounting sleeve, the knife sharpening feed unit and the knife sharpening block to deflect the angle with the vertical circular through hole as the center. This product can dynamically fit on the cutting edge surface of the chopping knife, thereby improving the accuracy of the knife angle. Care sharpening performs comprehensive coverage grinding on the cutting edge, eliminating blind areas during grinding, avoiding local gnawing or incomplete grinding, and greatly improving the sharpening effect of the product. When the sharpening feed unit moves to the trigger unit, the rack will mesh with the gear, causing the gear to drive the connecting sleeve and the sharpening block to rotate through the rotating sleeve, arc-shaped slide groove and arc-shaped block, ensuring uniform contact between the bottom of the sharpening block and the chopping knife during the grinding process, significantly improving the smoothness and sharpness consistency of the cutting edge of the chopping knife, and reducing the grinding groove marks of the sharpening block, so as to form a more uniform and delicate grinding pattern on the surface of the chopping knife, further improving the performance of the product. 2. In the present invention, by providing a dynamic applicable component, the electric push rod drives the second stroke segment to move, and the use distance between the first stroke segment and the second stroke segment is adjusted through the cooperation of the limit slider and the limit groove. The moving stroke of the limit rod and the deflection angle of the mounting sleeve and the sharpening feed unit can be adjusted, so that the sharpening block contacts the surface of the chopping knife at different angles, making the sharpening block suitable for the optimal grinding angle requirements of the chopping knife at different wear stages, greatly improving the sharpening adequacy of the product and effectively improving the applicability of the product during use; 3. In the present invention, through the auxiliary blowing assembly, the external air supply device sprays the air flow through the external pipe, the air supply channel, the air delivery frame, the air delivery hose, the second blowing channel, the first blowing channel and multiple nozzles to the sharpening block and the chopping unit, and discharges the sparks generated by the sharpening block and the chopping knife, thereby achieving active suppression and efficient removal of sparks at the chopping unit, and reducing the adhesion of spark waste to the chopping knife, further improving the performance of the product. At the same time, the blown air flow also accelerates the convection heat dissipation in the sharpening block and chopping knife area, avoiding deformation problems caused by local overheating, and further protecting the hardness and mechanical strength of the blade. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 Schematic diagram of the overall structure of the shredding unit of the present invention; Figure 2 It is a schematic diagram of the overall three-dimensional structure of the shredding unit and the knife sharpening and feeding unit in the present invention; Figure 3 It is a schematic diagram of a partial three-dimensional structure of the knife sharpening feeding unit and the support arm in the present invention; Figure 4 For the present invention Figure 3 A local enlarged structural diagram of point A; Figure 5 It is a partial three-dimensional structural diagram of the knife sharpening feeding unit and the angle adjustment unit in the present invention; Figure 6 For the present invention Figure 5 A schematic diagram of the partially enlarged structure at point B; Figure 7 Schematic diagram of the bottom perspective structure of the knife sharpening and feeding unit of the present invention; Figure 8 It is a schematic diagram of the bottom-up three-dimensional structure of the knife sharpening and feeding unit and the angle adjustment unit in the present invention; Figure 9 It is a schematic diagram of the overall three-dimensional structure of the present invention.
[0017] Legend: 1. Fixed arm; 2. Chopping unit; 3. Support arm; 4. Transmission chain unit; 5. Fixed seat; 6. Sharpening feed unit; 7. Angle adjustment unit; 701. Mounting sleeve; 702. Connecting block; 703. Sliding frame; 704. Slide; 705. First travel section; 706. Second travel section; 707. Limit rod; 708. Limit frame; 709. Connecting sleeve; 710. Spring; 711. Circular plate; 712. Sliding rod; 713. Roller; 714. Limit sleeve; 715. 5. Rotating sleeve; 716. Gear; 717. Connecting sleeve; 718. Arc block; 719. Rack; 8. Dynamic applicable component; 801. Electric push rod; 802. Limiting groove; 803. Limiting slider; 9. Auxiliary blowing component; 901. Limiting slide; 902. Sliding block; 903. Air supply frame; 904. Protective shrinkage layer; 905. Air supply hose; 906. Nozzle; 10. Trigger unit; 11. Guide rod; 12. Sharpening block; 13. Harvester body; 14. Cutting table. DETAILED DESCRIPTION
[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.
[0019] See also Figures 1-9 The present invention provides a technical solution: a knife sharpening mechanism and a green and yellow forage harvester thereof, comprising two fixed arms 1, a chopping unit 2 being rotatably connected between the two fixed arms 1, and further comprising: A connecting plate is fixedly connected between the two support arms 3, and a linear moving module is provided on one side of the connecting plate through a connecting seat; The fixing base 5 is provided between the two support arms 3, and a horizontal circular through hole is opened on one side of the interior of the fixing base 5, and a vertical circular through hole is opened on one side of the interior of the fixing base 5; The knife sharpening feeding unit 6 is installed inside the vertical circular through hole, and the diameter of the knife sharpening feeding unit 6 is smaller than the diameter of the vertical circular through hole; The sharpening block 12 is mounted at the center of the sharpening feed unit 6, and the sharpening feed unit 6 is slidably connected to the inside of the sharpening feed unit 6; An angle adjustment unit 7 is installed on one side of the sharpening feed unit 6 and is used to drive the sharpening feed unit 6 to rotate around the vertical circular through hole; A dynamic adaptable component 8 is installed inside the angle adjustment unit 7 and is used to adaptively adjust the angle rotation of the angle adjustment unit 7; The auxiliary air blowing assembly 9 is installed on one side of the angle adjustment unit 7, and is used to rotate with the angle adjustment unit 7 and blow air to clean the sharpening block 12 and the chopping unit 2; The angle adjustment unit 7 includes: The mounting sleeve 701 is mounted on the outer peripheral side of the sharpening feed unit 6, and the mounting sleeve 701 is located below the fixing seat 5. The first blowing channel is opened inside the mounting sleeve 701; The connecting block 702 is fixed to one side of the outside of the mounting sleeve 701, and a second blowing channel is opened inside the connecting block 702, and the second blowing channel is connected to the first blowing channel; The sliding frame 703 is located between the two support arms 3, and one side of the sliding frame 703 is fixedly connected to the outer wall of the connecting plate. The sliding frame 703 is arranged on the side away from the linear motion module. The sliding frame 703 has a sliding groove 704 on the side opposite to the connecting block 702 for sliding connection with the connecting block 702. The two first travel sections 705 are symmetrically mounted on both sides of the sliding frame 703, and the two first travel sections 705 are provided with an oblique shape on the opposite side. The bottom of the first travel section 705 is slidably connected to the sliding frame 703 through a support frame, and a linear moving unit is provided below the support frame; The second travel section 706 is provided between the two first travel sections 705 , and the second travel section 706 is provided in an oblique shape relative to the first travel section 705 ; A limiting rod 707 is fixed to one side of the bottom of the connecting block 702, and the limiting rod 707 is slidably connected to the inside of the first travel section 705 and the second travel section 706; The limiting frame 708 is installed on the top of the fixing base 5, and the limiting frame 708 and the vertical circular through hole are on the same axis, and a first through hole with the same diameter as the vertical circular through hole is opened inside the limiting frame 708; A plurality of connecting sleeves 709 are distributed in a circular array on the inner circumference of the limiting frame 708; A plurality of springs 710 are distributed in a circular array on the inner circumference of the limiting frame 708, and one side of the spring 710 is fixedly connected to one side of the inner wall of the connecting sleeve 709; A plurality of circular plates 711 are distributed in a circular array on the inner circumference of the limiting frame 708, and the circular plates 711 are slidably connected to the interior of the limiting frame 708; Multiple sliding rods 712, one end of which is fixedly connected to the multiple circular plates 711, and the sliding rods 712 are slidably connected to the interior of the limiting frame 708; Multiple rollers 713 are distributed in a circular array inside the limiting frame 708, and one side of the roller 713 is fixedly connected to the sliding rod 712; A limit block is provided above the plurality of rollers 713 and sleeved on the outer peripheral side of the sharpening feed unit 6; The limiting sleeve 714 is fixed to the bottom of the sharpening feed unit 6, and the limiting sleeve 714 is arranged on the outer peripheral side of the sharpening block 12; The rotating sleeve 715 rotates inside the limiting sleeve 714, and a limiting unit is provided on the top of the rotating sleeve 715. The limiting unit is provided inside the limiting sleeve 714, and two arc-shaped sliding grooves are provided in a circumferential array on the inner circumference of the rotating sleeve 715; The connecting sleeve 717 is slidably connected to the inner circumference of the connecting sleeve 717, and the outer circumference of the connecting sleeve 717 has two arc blocks 718 in a circumferential array. The arc blocks 718 are slidably connected to the inside of the arc chute, and the inner circumference of the arc blocks 718 is fixedly connected to the outer wall of the sharpening block 12; Gear 716 is sleeved on the outer bottom side of the rotating sleeve 715; The two racks 719 are disposed on one side of the gear 716 , and opposite sides of the two racks 719 are fixedly connected to the support arm 3 .
[0020] Specific implementation method: When the chopping knife on the chopping unit 2 is worn after long-term use, the flip push rod is first started to flip the flip cover, and the linear moving module drives the support arm 3, the fixed seat 5, the knife sharpening feed unit 6 and the knife sharpening block 12 to enter the preset position of the chopping knife in the chopping unit 2. At the same time, the transmission chain unit 4 drives the fixed seat 5, the knife sharpening feed unit 6 and the knife sharpening block 12 to move, and the chopping unit 2 is linearly sharpened. When the knife sharpening feed unit 6 contacts the trigger unit 10 on one side, the knife sharpening feed unit 6 drives the knife sharpening block 12 to move slightly downward, automatically sharpening the knife. The height of the block 12 and the grinding force of the chopping knife can be adjusted. During this process, the support frame, the first stroke section 705 and the second stroke section 706 can be driven to move upward by the linear moving unit. At this time, the limit rod 707 will gradually enter the first stroke section 705 and the second stroke section 706. As the transmission chain unit 4 drives the fixing seat 5 and the sharpening feed unit 6 to move, the limit rod 707 will gradually move from the first stroke section 705 to the second stroke section 706, which will cause the connecting block 702 to drive the mounting sleeve 701, the sharpening feed unit 6 and the sharpening block 12 to deflect at an angle with the vertical circular through hole as the center. The sharpening block 12 will now fit more closely to the surface of the chopping knife. This product can dynamically fit onto the cutting edge of the chopping knife, improving the precision care sharpening of the knife corners, performing comprehensive coverage sharpening of the cutting edge, eliminating blind areas for sharpening, and avoiding the phenomenon of local gnawing of the knife or incomplete sharpening, thereby greatly improving the sharpening effect of the product. When the limit rod 707 moves from the second stroke section 706 to the first stroke section 705, the spring 710 will drive the circular plate 711, the sliding rod 712, and the roller 713 to move, so as to reset the sharpening feed unit 6 and the sharpening block 12, thereby ensuring that the sharpening feed unit 6 is in a vertical state during use. The impact on product compensation adjustment is reduced. When the sharpening feed unit 6 moves to the trigger unit 10, the rack 719 will engage with the gear 716, so that the gear 716 drives the rotating sleeve 715 to rotate. Under the restriction of the arc-shaped slide groove and the arc block 718, the connecting sleeve 717 drives the sharpening block 12 to rotate, ensuring the uniformity of contact between the bottom of the sharpening block 12 and the chopping knife during the grinding process, significantly improving the smoothness and sharpness consistency of the cutting edge of the chopping knife, and reducing the grinding groove marks of the sharpening block 12, so as to form a more uniform and delicate grinding pattern on the surface of the chopping knife, further improving the performance of the product.
[0021] The dynamically applicable component 8 includes: One side of the electric push rod 801 is fixed inside the support frame, and one end of the output shaft of the electric push rod 801 is fixedly connected to the outer wall of the second travel section 706; Two limiting grooves 802 are provided at the oblique portion of the first travel section 705; The two limiting sliders 803 are slidably connected to the inside of the limiting groove 802 , and one side of the limiting slider 803 is fixedly connected to the outer wall of the second travel section 706 .
[0022] Specific implementation method: The electric push rod 801 drives the second stroke segment 706 to move, and the second stroke segment 706 will cause the limit slider 803 to move inside the limit groove 802 during the movement. The limit slider 803 and the limit groove 802 cooperate to adjust the use distance between the first stroke segment 705 and the second stroke segment 706, so that the moving stroke of the limit rod 707 and the deflection angle of the mounting sleeve 701 and the sharpening feed unit 6 can be adjusted, so that the sharpening block 12 contacts the surface of the chopping knife at different angles, so that the sharpening block 12 is suitable for the optimal grinding angle requirements of the chopping knife at different wear stages, which greatly improves the sharpening sufficiency of the product and effectively improves the applicability of the product during use.
[0023] The auxiliary blowing assembly 9 includes: The two limiting sliding grooves 901 are both located on the top side of the connecting block 702; Two sliding blocks 902 are slidably connected to the inside of the two limiting sliding grooves 901 respectively; The air delivery frame 903 has an air supply channel on one side, and the air delivery channel is provided on the top side of the sliding frame 703; Two protective shrinkage layers 904 are fixedly connected to the outer wall of the air delivery frame 903 on opposite sides, and the protective shrinkage layers 904 are arranged inside the air supply channel to ensure that the air delivery frame 903 is slidably enclosed inside the air supply channel; The top end of the air supply hose 905 is connected to the air supply frame 903, and the bottom end of the air supply hose 905 is connected to the second blowing channel inside the connecting block 702; Multiple nozzles 906 are distributed in a circular array on the bottom side of the mounting sleeve 701, and the top of the nozzle 906 is connected to the first blowing channel; Two trigger units 10 are symmetrically mounted on one side of the inner portion of the two support arms 3, and the trigger units 10 are arranged on one side of the sharpening feed unit 6; The transmission chain unit 4 is installed on one side of the connecting plate, and the transmission chain unit 4 is connected to the fixed base 5 through the mounting base, and is used to drive the fixed base 5, the sharpening feed unit 6 and the sharpening block 12 to rotate; The guide rod 11 is fixed between the two support arms 3 and is slidably connected to the inside of the transverse circular through hole opened inside the fixing base 5, and is used to cooperate with the transmission chain unit 4 to ensure the movement stability of the fixing base 5; The protective cover is installed between the two fixed arms 1, and a second through hole is opened on the top side of the inner part of the protective cover. The second through hole and the sharpening block 12 are on the same axis; The flip cover is hinged inside the second through hole, and a flip push rod is provided on one side of the top of the flip cover through a hinge seat, and the flip push rod is fixedly connected to the outer wall of the protective cover through an arc seat; The harvester body 13 is mounted outside the fixed arm 1 and the chopping unit 2; The cutting platform 14 is provided at the front end of the harvester body 13 and is used to support and install the external guide cutting wheel; The feeding unit is provided between the cutting table 14 and the chopping unit 2 and is used to transport the cut materials on the cutting table 14 to the chopping unit 2; The traveling mechanism is installed at the bottom of the harvester body 13 and is used to drive the harvester body 13 to move.
[0024] Specific implementation method: The harvester body 13 is driven to move by the walking mechanism, and the harvester body 13 is first moved to a suitable position of the external green and yellow feed field. After that, the walking mechanism drives the harvester body 13 to move inside the external green and yellow feed field. At this time, the cutting table 14 and the external cutting wheel will guide and assist in cutting the external green and yellow feed, and then the feeding unit will transport it to the inside of the chopping unit 2. The chopping unit 2 will chop and crush the external green and yellow feed and transport it to the screening unit inside the harvester body 13. After screening, it will be stored or discharged externally. The control system, hydraulic system and drive system involved in this product are all publicly known technologies to people in this field, so there is no excessive description in this application. It is explained that during this process, the external air supply device conveys air to the inside of the air supply channel through an external pipe, and then conveys it to the inside of the second blowing channel and the first blowing channel through the air supply frame 903 and the air supply hose 905, and then sprays it to the sharpening block 12 and the chopping unit 2 through multiple nozzles 906, so that the sparks generated by the sharpening block 12 and the chopping knife are discharged, thereby achieving active suppression and efficient removal of sparks at the chopping unit 2, and reducing the adhesion of spark waste to the chopping knife, further improving the performance of the product, and at the same time, the blown air flow also accelerates the convective heat dissipation in the sharpening block 12 and the chopping knife area, avoiding deformation problems caused by local overheating, and further protecting the hardness and mechanical strength of the blade.
[0025] Working principle: When in use, the harvester body 13 is driven to move by the walking mechanism. The harvester body 13 is first moved to a suitable position on the external green and yellow fodder field. After that, the walking mechanism drives the harvester body 13 to move inside the external green and yellow fodder field. At this time, the cutting table 14 and the external cutting wheel will guide and assist in cutting the external green and yellow fodder. The feeding unit then transports it to the inside of the chopping unit 2. The chopping unit 2 will chop and crush the external green and yellow fodder and transport it to the screening unit inside the harvester body 13. After screening, it is stored or discharged externally. The control system, hydraulic system and drive system involved in this product are all publicly known technologies to those skilled in the art, so they are not elaborated in this application. After long-term use, when the shredding blades on the shredding unit 2 are worn, the flip push rod is first activated to flip the flip cover, and the linear moving module drives the support arm 3, the fixing seat 5, the sharpening feed unit 6 and the sharpening block 12 to enter the preset position of the shredding blade in the shredding unit 2. At the same time, the transmission chain unit 4 drives the fixing seat 5, the sharpening feed unit 6 and the sharpening block 12 to move, and the shredding unit 2 is sharpened in a linear manner. When the sharpening feed unit 6 contacts the trigger unit 10 on one side, the sharpening feed unit 6 drives the sharpening block 12 to move slightly downward, automatically adjusting the use height of the sharpening block 12 and the shredding height. The sharpening force of the knife can be adjusted. During this process, the support frame, the first stroke section 705 and the second stroke section 706 can be driven to move upward by the linear moving unit. At this time, the limiting rod 707 will gradually enter the first stroke section 705 and the second stroke section 706. As the transmission chain unit 4 drives the fixing seat 5 and the knife sharpening feed unit 6 to move, the limiting rod 707 will gradually move from the first stroke section 705 to the second stroke section 706. The connecting block 702 will drive the mounting sleeve 701, the knife sharpening feed unit 6 and the knife sharpening block 12 to deflect at an angle with the vertical circular through hole as the center, so that the knife sharpening block 12 fits the surface of the chopping knife; When the limiting rod 707 moves from the second stroke section 706 to the first stroke section 705, the spring 710 will drive the circular plate 711, the sliding rod 712 and the roller 713 to move, so as to reset the knife sharpening feed unit 6 and the knife sharpening block 12, thereby ensuring the vertical state of the knife sharpening feed unit 6 during use, reducing the influence on the product compensation adjustment; when the knife sharpening feed unit 6 moves to the trigger unit 10, the rack 719 will mesh with the gear 716, so that the gear 716 drives the rotating sleeve 715 to rotate, and under the restriction of the arc-shaped slide groove and the arc block 718, the connecting sleeve 717 drives the knife sharpening block 12 to rotate, thereby ensuring the uniform contact between the bottom of the knife sharpening block 12 and the chopping knife during the grinding process; The electric push rod 801 drives the second travel section 706 to move, and during the movement of the second travel section 706, the limiting slider 803 moves inside the limiting groove 802. Through the cooperation between the limiting slider 803 and the limiting groove 802, the use distance between the first travel section 705 and the second travel section 706 is adjusted, and the moving stroke of the limiting rod 707 and the deflection angle of the mounting sleeve 701 and the sharpening feed unit 6 can be adjusted, so that the sharpening block 12 contacts the surface of the shredder knife at different angles; During this process, the external air supply device transports air to the inside of the air supply channel through an external pipe, and then transports it to the inside of the second blowing channel and the first blowing channel through the air supply frame 903 and the air supply hose 905, and then sprays it to the grinding block 12 and the shredding unit 2 through multiple nozzles 906, thereby discharging the sparks generated by the grinding block 12 and the shredding knife, thereby achieving active suppression and efficient elimination of sparks at the shredding unit 2.
[0026] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.
Claims
1. A knife sharpening mechanism comprising two fixed arms (1), wherein a chopping unit (2) is rotatably connected between the two fixed arms (1), characterized in that: Also includes: A connecting plate is fixedly connected between the two support arms (3), and a linear moving module is provided on one side of the connecting plate through a connecting seat; A fixing seat (5) is provided between the two support arms (3), and a horizontal circular through hole is provided on one side of the interior of the fixing seat (5), and a vertical circular through hole is provided on one side of the interior of the fixing seat (5); A knife sharpening feed unit (6) is installed inside the vertical circular through hole, and the diameter of the knife sharpening feed unit (6) is smaller than the diameter of the vertical circular through hole; A knife sharpening block (12) is mounted at the center of the knife sharpening feed unit (6), and the knife sharpening feed unit (6) is slidably connected to the inside of the knife sharpening feed unit (6); An angle adjustment unit (7) is installed on one side of the sharpening feed unit (6) and is used to drive the sharpening feed unit (6) to rotate around the vertical circular through hole; A dynamic adaptable component (8) is installed inside the angle adjustment unit (7) and is used to adaptively adjust the angle rotation of the angle adjustment unit (7); The auxiliary air blowing assembly (9) is installed on one side of the angle adjustment unit (7) and is used to rotate with the angle adjustment unit (7) and blow air to clean the sharpening block (12) and the chopping unit (2).
2. A knife sharpening mechanism according to claim 1, characterized in that: The angle adjustment unit (7) comprises: A mounting sleeve (701) is sleeved on the outer peripheral side of the sharpening feed unit (6), and the mounting sleeve (701) is located below the fixing seat (5), and a first blowing channel is opened inside the mounting sleeve (701); The connecting block (702) is fixed to one side of the outside of the mounting sleeve (701), and a second blowing channel is provided inside the connecting block (702), and the second blowing channel is connected to the first blowing channel; The sliding frame (703) is located between the two support arms (3), and one side of the sliding frame (703) is fixedly connected to the outer wall of the connecting plate. The sliding frame (703) is arranged on a side away from the linear moving module. The sliding frame (703) is provided with a sliding groove (704) for sliding connection with the connecting block (702) on the side opposite to the connecting block (702).
3. A knife sharpening mechanism according to claim 2, characterized in that: The angle adjustment unit (7) further comprises: The two first travel sections (705) are symmetrically mounted on both sides of the interior of the sliding frame (703), and an oblique shape is provided on opposite sides of the two first travel sections (705). The bottom of the first travel section (705) is slidably connected to the interior of the sliding frame (703) via a support frame, and a linear moving unit is provided below the support frame; The second stroke section (706) is arranged between the two first stroke sections (705), and the second stroke section (706) is arranged in an oblique shape relative to one side of the first stroke section (705); The limiting rod (707) is fixed to one side of the bottom of the connecting block (702), and the limiting rod (707) is slidably connected inside the first travel section (705) and the second travel section (706).
4. A knife sharpening mechanism according to claim 3, characterized in that: The angle adjustment unit (7) further comprises: A limit frame (708) is mounted on the top of the fixing seat (5), and the limit frame (708) and the vertical circular through hole are on the same axis, and a first through hole with the same diameter as the vertical circular through hole is opened inside the limit frame (708); A plurality of connecting sleeves (709) are distributed in a circular array on the inner circumference of the limiting frame (708); A plurality of springs (710) are distributed in a circular array on the inner circumference of the limit frame (708), and one side of the spring (710) is fixedly connected to one side of the inner wall of the connecting sleeve (709); A plurality of circular plates (711) are distributed in a circular array on the inner circumference of the limiting frame (708), and the circular plates (711) are slidably connected to the interior of the limiting frame (708); A plurality of sliding rods (712), one end of which is fixedly connected to the plurality of circular plates (711), and the sliding rods (712) are slidably connected inside the limiting frame (708); A plurality of rollers (713) are distributed in a circular array inside the limiting frame (708), and one side of the rollers (713) is fixedly connected to the sliding rod (712); The limiting block is arranged above the plurality of rollers (713) and is sleeved on the outer peripheral side of the knife sharpening feeding unit (6).
5. A knife sharpening mechanism according to claim 4, characterized in that: The angle adjustment unit (7) further comprises: A limiting sleeve (714) is fixed to the bottom of the sharpening feed unit (6), and the limiting sleeve (714) is arranged on the outer peripheral side of the sharpening block (12); The rotating sleeve (715) rotates inside the limiting sleeve (714), and a limiting unit is provided on the top of the rotating sleeve (715), and the limiting unit is provided inside the limiting sleeve (714). Two arc-shaped sliding grooves are provided in a circumferential array on the inner circumference of the rotating sleeve (715); A connecting sleeve (717) is slidably connected to the inner circumference of the connecting sleeve (717), and two arc blocks (718) are arranged in a circumferential array on the outer circumference of the connecting sleeve (717), wherein the arc blocks (718) are slidably connected to the inside of the arc chute, and the inner circumference of the arc blocks (718) is fixedly connected to the outer wall of the sharpening block (12); A gear (716) is sleeved on the outer bottom side of the rotating sleeve (715); The two racks (719) are arranged on one side of the gear (716), and the opposite sides of the two racks (719) are fixedly connected to the support arm (3).
6. A knife sharpening mechanism according to claim 3, characterized in that: The dynamic adaptability component (8) includes: An electric push rod (801) is fixed on one side inside the support frame, and one end of the output shaft of the electric push rod (801) is fixedly connected to the outer wall of the second stroke section (706); Two limiting grooves (802) are provided at the oblique portion of the first travel section (705); The two limiting sliders (803) are slidably connected to the inside of the limiting groove (802), and one side of the limiting slider (803) is fixedly connected to the outer wall of the second travel section (706).
7. A knife sharpening mechanism according to claim 6, characterized in that: The auxiliary blowing component (9) comprises: Two limiting slide grooves (901) are both located on the top side of the connecting block (702); Two sliding blocks (902) are slidably connected to the inside of the two limiting sliding grooves (901); An air delivery frame (903) has an air supply channel connected to one side thereof, and the air delivery channel is arranged on the top side inside the sliding frame (703); Two protective shrinkage layers (904) are fixedly connected to the outer wall of the air delivery frame (903) on opposite sides, and the protective shrinkage layers (904) are arranged inside the air supply channel to ensure that the air delivery frame (903) is slidably enclosed inside the air supply channel; The top end of the air delivery hose (905) is connected to the air delivery frame (903), and the bottom end of the air delivery hose (905) is connected to the second air blowing channel inside the connecting block (702); A plurality of nozzles (906) are distributed in a circular array on the bottom side of the mounting sleeve (701), and the top ends of the nozzles (906) are connected to the first blowing channel.
8. A knife sharpening mechanism according to claim 7, characterized in that: Also includes: Two trigger units (10) are symmetrically mounted on one side of the interior of the two support arms (3), and the trigger units (10) are arranged on one side of the knife sharpening feed unit (6); The transmission chain unit (4) is mounted on one side of the connecting plate, and the transmission chain unit (4) is connected to the fixed seat (5) through the mounting seat, and is used to drive the fixed seat (5), the sharpening feed unit (6) and the sharpening block (12) to rotate.
9. A knife sharpening mechanism according to claim 8, characterized in that: Also includes: A guide rod (11) is fixed between the two support arms (3), and the guide rod (11) is slidably connected to the inside of a transverse circular through hole opened inside the fixing seat (5), and is used to cooperate with the transmission chain unit (4) to ensure the movement stability of the fixing seat (5); A protective cover is installed between the two fixed arms (1), and a second through hole is opened on the top side of the inner portion of the protective cover, and the second through hole and the sharpening block (12) are on the same axis; The flip cover is hinged inside the second through hole, and a flip push rod is provided on one side of the top of the flip cover through a hinge seat. The flip push rod is fixedly connected to the outer wall of the protective cover through an arc seat.
10. A green fodder harvester, characterized in that: A knife sharpening mechanism according to any one of claims 1 to 9, further comprising: A harvester body (13) is mounted outside the fixed arm (1) and the chopping unit (2); A cutting platform (14) is arranged on one side of the front end of the harvester body (13) and is used to support and install an external guide cutting wheel; A feeding unit is provided between the cutting table (14) and the chopping unit (2), and is used for conveying the cut material on the cutting table (14) to the chopping unit (2); The walking mechanism is installed at the bottom of the harvester body (13) and is used to drive the harvester body (13) to move.