Adjustable split comb plate silage harvester header

Abstract

The utility model relates to an adjustable split type comb plate silage harvester header, and belongs to the technical field of silage harvesting equipment. According to the technical scheme, a grain dividing fork (5) is arranged at the front end of a front feeding roller (2), cutting boards of the front feeding roller (2) and a rear feeding roller (3) are arranged in a crossed and staggered mode, and a split type comb plate (6) is arranged between the front feeding roller and the rear feeding roller; the split type comb plate comprises a front comb plate and a rear comb plate which are detachably connected, the fit clearance between the front comb plate and the rear comb plate can be adjusted, and the working distance between the front comb plate and the rear feeding roller can be changed by adjusting the fit clearance between the front comb plate and the rear comb plate. Therefore, the conveying requirement for cutting of different types of materials is met. According to the utility model, the split comb plate is adopted, so that material blockage during working of the header is reduced, the comb plate is convenient to replace and maintain, and the working efficiency during harvesting is improved; the feeding device has the characteristics of high feeding efficiency, uniform feeding, efficient and stable conveying and the like.

Description

Technical Field

[0001] The utility model relates to an adjustable split comb plate forage harvester cutter bar, which is especially suitable for the operation requirements of small farms and belongs to the technical field of forage harvesting equipment. Background Art

[0002] A forage harvester is one of the important mechanical equipment in agricultural production, which is used to cut forage crops into appropriate lengths for silage fermentation. The cutter bar of a forage harvester is an important component and is used by being hung on the front end of the body of the forage harvester. At present, the operation width of large domestic forage harvester cutter bars is large and cannot meet the operation requirements of small farms. Some small forage harvester cutter bars are driven by upper transmission input, with complex structures and unable to install comb plates, resulting in blockage of the rear feeding roller, low feeding efficiency, high failure rate and other problems, and cannot meet the market requirements. Summary of the Utility Model

[0003] The purpose of the utility model is to provide an adjustable split comb plate forage harvester cutter bar, which adopts a split comb plate to reduce material blockage during the operation of the cutter bar, improve the working efficiency during harvesting, and has the characteristics of high feeding efficiency, uniform feeding, high-efficiency and stable conveying, etc., and solves the problems existing in the background art.

[0004] The technical solution of the utility model is as follows:

[0005] An adjustable split comb plate forage harvester cutter bar includes a front feeding roller, a rear feeding roller, a dividing fork and a split comb plate arranged on the cutter bar frame. A dividing fork is arranged at the front end of the front feeding roller. The cutter plates of the front feeding roller and the rear feeding roller are arranged in a crosswise and staggered manner. A split comb plate is arranged between the front feeding roller and the rear feeding roller. The split comb plate includes a front comb plate and a rear comb plate. The front comb plate and the rear comb plate are detachably connected, and the fitting gap between the front comb plate and the rear comb plate can be adjusted. By adjusting the fitting gap between the front comb plate and the rear comb plate, the working distance between the front comb plate and the rear feeding roller can be changed, so as to meet the conveying requirements for cutting different types of materials.

[0006] The front comb plate includes a first front comb tooth, a second front comb tooth, a first front comb tooth connecting plate, a second front comb tooth connecting plate, a first front guide plate and a second front guide plate. The number of both the first front comb tooth and the second front comb tooth is two. The two first front comb teeth and the two second front comb teeth are arranged in parallel. The two first front comb teeth are connected by the first front comb tooth connecting plate, and a first front guide plate is arranged between the two first front comb teeth. The two second front comb teeth are connected by the second front comb tooth connecting plate, and a second front guide plate is arranged between the two second front comb teeth.

[0007] The rear comb tooth plate includes rear comb teeth, the first rear comb tooth connecting plate, the second rear comb tooth connecting plate, a rear diversion plate and support columns. There are four rear comb teeth, which are arranged in parallel. The front ends of the upper two rear comb teeth are connected by the first rear comb tooth connecting plate, and the front ends of the lower two rear comb teeth are connected by the second rear comb tooth connecting plate. The rear ends of the four rear comb teeth are connected by mortise and tenon joints with the rear diversion plate. The support columns penetrate through the four rear comb teeth and are fixedly connected to the cutter bar frame.

[0008] Both the first front comb tooth connecting plate and the second front comb tooth connecting plate are provided with a plurality of circular holes. Both the first rear comb tooth connecting plate and the second rear comb tooth connecting plate are provided with a plurality of straight slots. The circular holes and the straight slots are matched. The first rear comb tooth connecting plate and the second rear comb tooth connecting plate are respectively connected to the first front comb tooth connecting plate and the second front comb tooth connecting plate through the straight slots, the circular holes and bolts. The connecting part of the front comb tooth plate and the rear comb tooth plate is tangent, making the material conveying smoother. During operation, by adjusting the corresponding positions of the circular holes and the straight slots, the fitting clearance between the front comb tooth connecting plate and the rear comb tooth connecting plate is adjusted, and then the working distance between the front comb tooth plate and the front feeding roller is changed, so as to meet the conveying requirements for cutting different types of materials.

[0009] Fixed rib plates are arranged on the outer sides of both the first front comb tooth and the second front comb tooth. U-shaped grooves are provided at the front ends of the first front comb tooth, the second front comb tooth and the fixed rib plates. The two first front comb teeth and the fixed rib plate are connected to the first front diversion plate through the U-shaped grooves. The two second front comb teeth and the fixed rib plate are connected to the second front diversion plate through the U-shaped grooves.

[0010] A space one is formed between the first front diversion plate and the two first front comb teeth, and a space two is formed between the second front diversion plate and the two second front comb teeth. The space one and the space two are respectively matched with the cutter teeth on the knife plate corresponding to the front feeding roller. The rear diversion plate is arranged close to the side of the rear feeding roller.

[0011] Both the first front comb tooth, the second front comb tooth and the fixed rib plate are arc-shaped and have the same side curvature. The width of the second front comb tooth is greater than that of the first front comb tooth.

[0012] The support column is of a cylindrical structure. Threaded holes are respectively provided at both ends of the support column. One end of the support column is connected to the upper cover of the comb tooth plate through a bolt, and the other end is fixedly connected to the cutter bar frame through a bolt.

[0013] The dividing fork includes a dividing fork mounting frame, dividing fork tips, dividing fork support frames and a dividing fork guide plate. The dividing fork mounting frame is installed at the lower end of the front feeding roller. A plurality of dividing fork support frames are provided at the front end of the dividing fork mounting frame. Each dividing fork support frame is provided with a dividing fork tip. The dividing fork tip is of a multi-pyramidal structure. The rear end of the dividing fork tip is connected to the dividing fork guide plate.

[0014] The dividing guide plate is of a flat plate structure and can be bent at different angles. When the cutting table is working, the flat plate type dividing guide plate can increase the contact area with the materials, can straighten the cut materials to a great extent, reduce the situation of dumping, and make the materials be conveyed into the front feeding roller more quickly, improving the working efficiency of the cutting table.

[0015] The number of the front feeding roller, the rear feeding roller and the split comb-shaped plate is two, and they are symmetrically arranged along the center line of the cutting table frame. The central axes of the front feeding roller and the rear feeding roller are arranged parallel to each other and are vertically arranged on the cutting table frame.

[0016] The cutter plate of the front feeding roller is composed of a feeding cutter plate, a corrugated cutter plate, a bent cutter plate and a disc type cutter plate, and the feeding cutter plate, the corrugated cutter plate, the bent cutter plate and the disc type cutter plate are arranged in sequence from top to bottom.

[0017] The cutter plate of the rear feeding roller is composed of a conveying plate, an upper feeding tooth plate, a lower feeding tooth plate and a bottom wiping tooth plate, and the conveying plate, the upper feeding tooth plate, the lower feeding tooth plate and the bottom wiping tooth plate are arranged in sequence from top to bottom, and the cutter teeth on the conveying plate, the upper feeding tooth plate, the lower feeding tooth plate and the bottom wiping tooth plate are arranged in a staggered manner up and down.

[0018] The feeding cutter plate, the corrugated cutter plate, the bent cutter plate, the disc type cutter plate, the conveying plate and the bottom wiping tooth plate are all of one layer; the upper feeding tooth plate and the lower feeding tooth plate are both of two layers and are arranged at equal intervals. The feeding cutter plate of the front feeding roller is arranged between the two layers of upper feeding tooth plates and rotates crosswise with the two layers of upper feeding tooth plates; the corrugated cutter plate of the front feeding roller is arranged between the two layers of lower feeding tooth plates and rotates crosswise with the two layers of lower feeding tooth plates.

[0019] A main beam and a grain gathering device are also arranged on the cutting table frame. A double transmission gearbox and a guiding gearbox are respectively arranged below the front feeding roller and the rear feeding roller, and both the double transmission gearbox and the guiding gearbox are installed on the main beam; the grain gathering device is arranged above the front feeding roller and the rear feeding roller.

[0020] Both the double transmission gearbox and the guiding gearbox are provided with gearbox guard plates, and the gearbox guard plates are connected with the cutting table frame through bolts.

[0021] A transmission shaft is arranged on the main beam, and the transmission shaft is connected with a clutch. The vehicle body transmits power to the transmission shaft in the main beam through the clutch. Four transmission bevel gears are installed on the transmission shaft, and the four transmission bevel gears are symmetrically distributed along the center line of the cutting table. The four transmission bevel gears are directly connected with the bevel gears on the double transmission gearbox and the guiding gearbox. The transmission shaft directly transmits power to the front feeding roller and the rear feeding roller through the double transmission gearbox and the guiding gearbox at the same time, and the front feeding roller and the rear feeding roller realize co-rotating with different speeds.

[0022] The header, clutch, guiding gearbox, double transmission gearbox, etc. are all well-known and commonly used equipment in the art.

[0023] Power is provided by the vehicle body and transmitted to the front feeding roller and the rear feeding roller in sequence; the materials are gathered by the dividing fork at the front end of the front feeding roller, the cut materials are smoothed to reduce dumping, and through the cooperation of the dividing guide plate at the rear end of the dividing fork with the feeding knife plate, corrugated knife plate, folding bending knife plate and disc cutter plate, the high-stalk materials are closed by the header to prevent the high-stalk materials from tilting and falling, so that the front feeding roller can smoothly complete cutting and conveying; the split comb tooth plate evenly and orderly guides the materials conveyed by the front feeding roller to prevent the materials from piling up and flowing back. Since the upper and lower feeding tooth plates of the rear feeding roller are equally spaced every two layers and form a cross rotation with the feeding knife plate and corrugated knife plate of the front feeding roller, the working gap between the knife plates on the front feeding roller and the rear feeding roller becomes smaller, making the material conveying smoother, thereby reducing the material blockage to a greater extent; the bottom wiping tooth plate of the rear feeding roller effectively conveys the broken straws, and the materials are smoothly sent into the subsequent device through the cooperation of the split comb tooth plate and the rear feeding roller.

[0024] The utility model optimizes and improves the front dividing fork, changes the round tube type at the tail of the dividing fork to the flat plate type at the tail of the dividing fork, increases the contact area, and makes the conveying of green forage straw more smooth; optimizes and upgrades the front feeding roller and the rear feeding roller, reduces the working gap between the knife plates, makes the silage feed evenly and orderly, and improves the feeding process of the materials; optimizes the design of the comb tooth plate, adopts a split type, reduces the material blockage during the operation of the cutting table, is convenient for the replacement and maintenance of the comb tooth plate, improves the working efficiency during harvesting, and can adjust the spacing of the comb tooth plate according to the harvesting requirements, making the cutting table more flexible.

[0025] The beneficial effects of the utility model are: adopting a split comb tooth plate, reducing the material blockage during the operation of the cutting table, being convenient for the replacement and maintenance of the comb tooth plate, and improving the working efficiency during harvesting; the dividing guide plate at the rear end of the dividing tip of the dividing fork is of a flat plate structure, increasing the contact area and making the conveying of green forage straw more smooth; reducing the working gap between the knife plates of the front feeding roller and the rear feeding roller, making the silage feed evenly and orderly; having the characteristics of high feeding efficiency, uniform feeding, high-efficiency and stable conveying, etc. Description of the Drawings

[0026] Figure 1 It is a top view of the utility model;

[0027] Figure 2 It is a front view of the utility model;

[0028] Figure 3 It is a bottom view of the utility model;

[0029] Figure 4This is a perspective view of the utility model;

[0030] Figure 5 is Figure 4 an enlarged view of part I of

[0031] Figure 6 This is a schematic structural diagram of the power transmission system of the utility model;

[0032] Figure 7 This is a schematic structural diagram of the front feeding roller of the utility model;

[0033] Figure 8 This is a schematic structural diagram of the rear feeding roller of the utility model;

[0034] Figure 9 This is a schematic diagram of the material transmission direction of the utility model;

[0035] Figure 10 This is a schematic structural diagram of the dividing fork of the utility model;

[0036] Figure 11 This is a schematic structural diagram of the split comb tooth plate of the utility model;

[0037] Figure 12 This is a schematic structural diagram of the rear comb tooth plate of the utility model;

[0038] Figure 13 This is a schematic structural diagram of the front comb tooth I of the utility model;

[0039] Figure 14 This is a schematic structural diagram of the front comb tooth II of the utility model;

[0040] In the figure: main beam 1, front feeding roller 2, feeding knife plate 2-1, corrugated knife plate 2-2, bent folding knife plate 2-3, disc type cutting knife plate 2-4, rear feeding roller 3, conveying plate 3-1, upper feeding tooth plate 3-2, lower feeding tooth plate 3-3, bottom wiping tooth plate 3-4, grain gathering device 4, dividing fork 5, dividing fork mounting bracket 5-1, dividing fork tip 5-2, dividing fork support frame 5-3, dividing fork guide plate 5-4, split comb tooth plate 6, front comb tooth I 6-1, front comb tooth II 6-2, front comb tooth connecting plate I 6-3, front comb tooth connecting plate II 6-4, front guide plate I 6-5, front guide plate II 6-6, fixed rib plate 6-7, rear comb tooth 6-8, rear comb tooth connecting plate I 6-9, rear comb tooth connecting plate II 6-10, rear guide plate 6-11, support column 6-12, gearbox guard plate 7, clutch 8, guiding gearbox 9, double transmission gearbox 10. Specific embodiments

[0041] The following further illustrates the utility model by way of examples in conjunction with the accompanying drawings.

[0042] An adjustable split-tooth plate forage harvester cutter head, comprising a front feeding roller 2, a rear feeding roller 3, a dividing fork 5 and a split-tooth plate 6 arranged on the cutter head frame. A dividing fork 5 is provided at the front end of the front feeding roller 2. The cutter plates of the front feeding roller 2 and the rear feeding roller 3 are arranged in a crosswise and offset manner. A split-tooth plate 6 is provided between the front feeding roller 2 and the rear feeding roller 3. The split-tooth plate 6 comprises a front tooth plate and a rear tooth plate. The front tooth plate and the rear tooth plate are detachably connected, and the fitting clearance between the front tooth plate and the rear tooth plate is adjustable. By adjusting the fitting clearance between the front tooth plate and the rear tooth plate, the working distance between the front tooth plate and the rear feeding roller 3 can be changed, so as to meet the conveying requirements for cutting different types of materials.

[0043] The front tooth plate comprises front teeth one 6-1, front teeth two 6-2, a front tooth connecting plate one 6-3, a front tooth connecting plate two 6-4, a front guide plate one 6-5 and a front guide plate two 6-6. The number of both the front teeth one 6-1 and the front teeth two 6-2 is two. The two front teeth one 6-1 and the two front teeth two 6-2 are arranged in parallel. The two front teeth one 6-1 are connected by the front tooth connecting plate one 6-3, and a front guide plate one 6-5 is provided between the two front teeth one 6-1. The two front teeth two 6-2 are connected by the front tooth connecting plate two 6-4, and a front guide plate two 6-6 is provided between the two front teeth two 6-2.

[0044] The rear tooth plate comprises rear teeth 6-8, a rear tooth connecting plate one 6-9, a rear tooth connecting plate two 6-10, a rear guide plate 6-11 and a support column 6-12. The number of the rear teeth 6-8 is four. The four rear teeth 6-8 are arranged in parallel. The front ends of the upper two rear teeth 6-8 are connected by the rear tooth connecting plate one 6-9, and the front ends of the lower two rear teeth 6-8 are connected by the rear tooth connecting plate two 6-10. The rear ends of the four rear teeth 6-8 are connected by mortise and tenon joints with the rear guide plate 6-11. The support column 6-12 penetrates through the four rear teeth 6-8 and is fixedly connected with the cutter head frame.

[0045] A plurality of circular holes are provided on both the front tooth connecting plate one 6-3 and the front tooth connecting plate two 6-4, and a plurality of straight slots are provided on both the rear tooth connecting plate one 6-9 and the rear tooth connecting plate two 6-10. The circular holes and the straight slots are matched. The rear tooth connecting plate one 6-9 and the rear tooth connecting plate two 6-10 are respectively connected with the front tooth connecting plate one 6-3 and the front tooth connecting plate two 6-4 through the straight slots, the circular holes and bolts. The connecting part of the front tooth plate and the rear tooth plate is tangent, making the material conveying smoother. During operation, by adjusting the corresponding positions of the circular holes and the straight slots, the fitting clearance between the front tooth connecting plate and the rear tooth connecting plate is adjusted, and further the working distance between the front tooth plate and the rear feeding roller 3 is changed, so as to meet the conveying requirements for cutting different types of materials.

[0046] Fixed rib plates 6-7 are provided on the outer sides of the front comb teeth 6-1 and the front comb teeth 6-2. U-shaped grooves are provided at the front ends of the front comb teeth 6-1, the front comb teeth 6-2, and the fixed rib plates 6-7. The two front comb teeth 6-1 and the fixed rib plates 6-7 are connected to the front deflector plate 6-5 through the U-shaped grooves; the two front comb teeth 6-2 and the fixed rib plates 6-7 are connected to the front deflector plate 6-6 through the U-shaped grooves.

[0047] A space one is formed between the front deflector plate 6-5 and the two front comb teeth 6-1, and a space two is formed between the front deflector plate 6-6 and the two front comb teeth 6-2. The space one and the space two respectively match the cutter teeth on the cutter plate corresponding to the front feeding roller 2; the rear deflector plate 6-11 is arranged close to the side of the rear feeding roller 3.

[0048] The front comb teeth 6-1, the front comb teeth 6-2, and the fixed rib plates 6-7 are all arc-shaped and have the same side curvature. The width of the front comb teeth 6-2 is greater than the width of the front comb teeth 6-1.

[0049] The support column 6-12 is of a cylindrical structure. Threaded holes are provided at both ends of the support column 6-12. One end of the support column 6-12 is connected to the upper cover of the comb tooth plate through a bolt, and the other end is fixedly connected to the header frame through a bolt.

[0050] The dividing fork 5 includes a dividing fork mounting frame 5-1, a dividing fork tip 5-2, a dividing fork support frame 5-3, and a dividing fork guide plate 5-4. The dividing fork mounting frame 5-1 is installed at the lower end of the front feeding roller 2. A plurality of dividing fork support frames 5-3 are provided at the front end of the dividing fork mounting frame 5-1. A dividing fork tip 5-2 is provided on each dividing fork support frame 5-3. The dividing fork tip 5-2 is of a multi-pyramidal structure, and the rear end of the dividing fork tip 5-2 is connected to the dividing fork guide plate 5-4.

[0051] The dividing fork guide plate 5-4 is of a flat plate structure and can be bent at different angles. When the header is working, the flat dividing fork guide plate can increase the contact area with the material, can straighten the cut material to a great extent, reduce the dumping situation, and enable the material to be conveyed into the front feeding roller more quickly, improving the working efficiency of the header.

[0052] The number of the front feeding roller 2, the rear feeding roller 3, and the split comb tooth plate 6 is two, and they are symmetrically arranged along the center line of the header frame. The central axes of the front feeding roller 2 and the rear feeding roller 3 are arranged parallel to each other and are vertically arranged on the header frame.

[0053] The cutter plate of the front feeding roller 2 is composed of a feeding cutter plate 2-1, a corrugated cutter plate 2-2, a bent cutter plate 2-3, and a disc cutter plate 2-4. The feeding cutter plate 2-1, the corrugated cutter plate 2-2, the bent cutter plate 2-3, and the disc cutter plate 2-4 are arranged in sequence from top to bottom.

[0054] The knife plates of the rear feeding roller 3 are composed of a conveying plate 3-1, an upper feeding tooth plate 3-2, a lower feeding tooth plate 3-3 and a bottom wiping tooth plate 3-4. The conveying plate 3-1, the upper feeding tooth plate 3-2, the lower feeding tooth plate 3-3 and the bottom wiping tooth plate 3-4 are arranged in sequence from top to bottom, and the cutter teeth on the conveying plate 3-1, the upper feeding tooth plate 3-2, the lower feeding tooth plate 3-3 and the bottom wiping tooth plate 3-4 are arranged with upper and lower dislocation.

[0055] The feeding knife plate 2-1, the corrugated knife plate 2-2, the folding and bending knife plate 2-3, the disc cutter plate 2-4, the conveying plate 3-1 and the bottom wiping tooth plate 3-4 are all one layer; the upper feeding tooth plate 3-2 and the lower feeding tooth plate 3-3 are both two layers and are arranged at equal intervals. The feeding knife plate 2-1 of the front feeding roller 2 is arranged between the two layers of the upper feeding tooth plates 3-2 and rotates crosswise with the two layers of the upper feeding tooth plates 3-2; the corrugated knife plate 2-2 of the front feeding roller 2 is arranged between the two layers of the lower feeding tooth plates 3-3 and rotates crosswise with the two layers of the lower feeding tooth plates 3-3.

[0056] A main beam 1 and a reel 4 are further provided on the cutter bar frame. A double transmission gearbox 10 and a guiding gearbox 9 are respectively provided below the front feeding roller 2 and the rear feeding roller 3. The double transmission gearbox 10 and the guiding gearbox 9 are both installed on the main beam 1; the reel 4 is arranged above the front feeding roller 2 and the rear feeding roller 3.

[0057] Both the double transmission gearbox 10 and the guiding gearbox 9 are provided with gearbox guard plates 7, and the gearbox guard plates 7 are connected to the cutter bar frame by bolts.

[0058] A transmission shaft is provided on the main beam 1. The transmission shaft is connected to a clutch 8. The vehicle body transmits power to the transmission shaft in the main beam 1 through the clutch 8. Four transmission bevel gears are installed on the transmission shaft. The four transmission bevel gears are symmetrically distributed along the center line of the cutter bar. The four transmission bevel gears are directly connected to the bevel gears on the double transmission gearbox 10 and the guiding gearbox 9. The transmission shaft directly transmits power to the front feeding roller 2 and the rear feeding roller 3 through the double transmission gearbox 10 and the guiding gearbox 9 at the same time, and the front feeding roller 2 and the rear feeding roller 3 realize co-rotating with differential speed.

[0059] In this embodiment, an adjustable split comb-tooth plate forage harvester cutter bar includes a main beam 1, a front feeding roller 2, a rear feeding roller 3, a reel 4, a dividing fork 5 and a split comb-tooth plate 6 assembled on the cutter bar frame. An angle-adjustable dividing fork 5 is provided at the front end of the front feeding roller 2. The rear end of the dividing fork is distributed in a comb-like manner. The dividing tip 5-2 of the dividing fork 5 is a multi-pyramidal structure; the knife plates of the front feeding roller 2 and the rear feeding roller 3 rotate crosswise; a separable and detachable split comb-tooth plate 6 is provided between the front feeding roller 2 and the rear feeding roller 3; a power source directly provides power for the operation of the front feeding roller 2 and the rear feeding roller 3.

[0060] The vehicle body transmits power to the transmission shaft in the main beam 1 via the clutch 8. The dual-drive gearbox 10 and the guiding gearbox 9 of the front feeding roller 2 and the rear feeding roller 3 are directly mounted on the main beam 1. The transmission shaft directly transmits power to the front feeding roller 2 and the rear feeding roller 3 via the dual-drive gearbox 10 and the guiding gearbox 9 simultaneously, thus reducing power loss and making the power effectively utilized. The front feeding roller 2 and the rear feeding roller 3 rotate in the same direction with differential speed. The dual-drive gearbox 10 and the guiding gearbox 9 at the lower ends of the front feeding roller 2 and the rear feeding roller 3 are both provided with gearbox guard plates 7. The gearbox guard plate 7 is attached to the dual-drive gearbox 10 by bending and completely covers the whole dual-drive gearbox, increasing the protection area. The gearbox guard plate 7 is connected to the cutter bar frame by bolts. When the cutter bar works on the ground with poor conditions such as mountains and hills, the dual-drive gearbox 10 of the cutter bar can be prevented from being damaged, effectively protecting the gearbox.

[0061] The number of the front feeding roller 2, the rear feeding roller 3 and the split comb-tooth plate 6 is two, and they are symmetrically distributed along the center line of the cutter bar frame. The central axes of the front feeding roller 2 and the rear feeding roller 3 are arranged parallel to each other and are vertically set on the cutter bar frame. The front comb-tooth plate of the split comb-tooth plate 6 is arranged between the front feeding roller 2 and the rear feeding roller 3, and the rear comb-tooth plate is arranged close to the outer side of the rear feeding roller 3. The cutter plate of the front feeding roller 2 is arranged from top to bottom in sequence by a layer of feeding cutter plate 2-1, a layer of corrugated cutter plate 2-2, a layer of bent cutter plate 2-3 and a layer of disc cutter plate 2-4. The cutter plate of the rear feeding roller 3 is arranged from top to bottom by a layer of conveying plate 3-1, two layers of upper feeding teeth plates 3-2, two layers of lower feeding teeth plates 3-3 and a layer of bottom wiping teeth plate 3-4, and the cutter teeth on the cutter plate are arranged in a staggered manner up and down.

[0062] The four layers of feeding teeth plates of the rear feeding roller 3 are arranged at equal intervals according to the upper two layers and the lower two layers respectively. The middle distance between every two layers intersects with the feeding cutter plate 2-1 and the corrugated cutter plate 2-2 of the front feeding roller 2. The corrugated cutter plate 2-2 can effectively cut crops in different conditions and can reduce the vibration of the cutter plate, improving the stability of the roller rotation. The intersecting rotation can make the relative clearance between the cutter plates of the front feeding roller 2 and the rear feeding roller 3 smaller, which is not only beneficial to the uniform and orderly conveying of materials and avoiding blockage, but also greatly improves the overall working efficiency of the cutter bar.

[0063] The dividing fork 5 includes a dividing mounting frame 5-1, dividing tips 5-2, dividing support frames 5-3, and dividing guide plates 5-4. The dividing mounting frame 5-1 is mounted on the cutting table frame at the lower end of the front feeding roller 2 by bolts. Multiple mounting holes are provided at the front end of the dividing mounting frame 5-1, and each mounting hole mounts a dividing support frame 5-3. The dividing tips 5-2 are fixed on the dividing support frames 5-3. The dividing tips 5-2 are of a multi-pyramidal structure. The rear end of the dividing guide plate 5-4 is connected to the dividing tips 5-2 at different angles by bending in a flat plate manner. When the cutting table is working, the dividing guide plate 5-4 can increase the contact area with the material, can largely smooth the cut material, reduce the situation of dumping, and enable the material to be conveyed into the front feeding roller more quickly, improving the working efficiency of the cutting table.

[0064] The split comb plate 6 includes a front comb plate and a rear comb plate. The front comb plate includes front comb teeth 6-1, front comb teeth 6-2, front comb tooth connecting plates 6-3, front comb tooth connecting plates 6-4, front diversion plates 6-5, front diversion plates 6-6, and fixed rib plates 6-7. The rear comb plate includes rear comb teeth 6-8, rear comb tooth connecting plates 6-9, rear comb tooth connecting plates 6-10, rear diversion plates 6-11, and support columns 6-12. Open U-shaped grooves are provided at one ends of the front comb teeth 6-1, front comb teeth 6-2, and fixed rib plates 6-7. Two front comb teeth 6-1 are assembled by the front diversion plates 6-5 and fixed rib plates 6-7 through the open U-shaped grooves, and the two front comb teeth 6-1 are arranged in parallel. Two front comb teeth 6-2 are assembled by the front diversion plates 6-6 and fixed rib plates 6-7 through the open U-shaped grooves, and the two front comb teeth 6-2 are arranged in parallel. The number of the rear comb teeth 6-8 is four. The rear comb teeth 6-8 are tenoned and fixed with the rear diversion plates 6-11 at different heights, and then reinforced by welding. The four rear comb teeth 6-8 are arranged in parallel and fixed to the cutting table frame through the support columns 6-12. The rear diversion plates 6-11 are connected and fixed to the cutting table frame by bolts. By adopting the split comb plate 6, the material can be efficiently and stably conveyed, and the blockage of the material can be effectively avoided, improving the feeding efficiency.

[0065] The front comb teeth 1 (6-1), front comb teeth 2 (6-2) and rear comb teeth (6-8) are all provided with round holes. The number of round holes in the front comb teeth 1 (6-1) and front comb teeth 2 (6-2) is one, and the number of round holes in the rear comb teeth (6-8) is two. This can not only reduce the weight of the comb teeth, but also save materials and reduce costs. Both the front comb tooth connecting plate 1 (6-3) and the front comb tooth connecting plate 2 (6-4) are provided with two round holes, and both the rear comb tooth connecting plate 1 (6-9) and the rear comb tooth connecting plate 2 (6-10) are provided with two straight slots. The round holes in the front comb tooth plate are connected and fixed with the straight slots in the rear comb tooth plate by bolts. The position of the bolts in the straight slots is adjustable, and the connecting parts of the front comb tooth plate and the rear comb tooth plate are tangent, so as to make the material conveying smoother. During operation, adjust the matching gap between the front comb tooth connecting plate and the rear comb tooth connecting plate, and then change the working distance between the front comb tooth plate and the rear feeding roller 3, so as to meet the conveying requirements for cutting different types of materials.

[0066] The front comb teeth 1 (6-1), front comb teeth 2 (6-2) and the fixed rib plate (6-7) all adopt an arc design, and the outer arcs are the same. Due to the different diameters of the cutter plates of the front feeding roller, the outer side of the front comb teeth 2 (6-2) is arranged with a part more than the outer side of the front comb teeth 1 (6-1).

[0067] The support column (6-12) is of a cylindrical structure. Threaded holes are respectively provided at both ends of the support column. One end is connected and fixed with the upper cover of the comb tooth plate by bolts, and the other end is connected and fixed with the cutting table frame by bolts.

[0068] The power transmission route of the present utility model is as follows: The power is provided by the vehicle body and is transmitted to the front feeding roller 2 and the rear feeding roller 3 in sequence.

[0069] The specific transmission route is: The cutting table is combined with the vehicle body through a suspension mechanism. The vehicle body transmits the power to the clutch 8 through chain drive, and then transmits the power to the transmission shaft in the main beam 1. Four transmission bevel gears are installed on the transmission shaft and are symmetrically distributed along the center line of the cutting table. The four transmission bevel gears are directly connected with the bevel gears on the double transmission gearbox 10 and the guide gearbox 9, and the working speeds of the front feeding roller 2 and the rear feeding roller 3 are adjusted through the gearbox.

[0070] The material feeding process of the present utility model is as follows: The machine body keeps a certain distance from the ground through the suspension mechanism for the cutting table. The materials are guided by the dividing fork 5 at the front end of the cutting table and are conveyed. The materials are cut by the cutter plate of the front feeding roller 2 rotating at high speed, and are gathered and transported, so that the materials are sent into the subsequent device evenly and orderly along the central channel through the rear feeding roller 3.

[0071] The specific material conveying process is as follows: The material first passes through the dividing fork 5 at the front end of the cutter bar to gather the cut material, smooth the cut material, and reduce dumping. The dividing guide plate 5-4 at the rear end of the dividing fork cooperates with the feeding knife plate 2-1, the corrugated knife plate 2-2, the folding knife plate 2-3, and the disc cutter plate 2-4. The gathering device 4 gathers some tall-stalk materials to prevent the tall-stalk materials from tilting or falling, enabling the front feeding roller 2 to smoothly complete cutting and conveying. The split comb tooth plate 6 evenly and orderly guides the materials conveyed by the front feeding roller 2 to prevent material accumulation and backflow. Since the upper material pushing tooth plate 3-2 and the lower material pushing tooth plate 3-3 of the rear feeding roller 3 are equally spaced every two layers and cross-rotate with the feeding knife plate 2-1 and the corrugated knife plate 2-5 of the front feeding roller 2, the working gap between the knife plates on the front feeding roller 2 and the rear feeding roller 3 becomes smaller, making the material conveying smoother, thereby reducing material blockage to a greater extent. The bottom wiping tooth plate 3-4 on the lower layer of the rear feeding roller 3 can effectively convey some broken straws. The materials are smoothly fed into the subsequent device through the cooperation of the split comb tooth plate 6 and the rear feeding roller 3.

[0072] The innovation points of the present utility model are as follows: ① The power is transmitted from the vehicle body to the main shaft in the crossbeam through the clutch. The double transmission gearbox and the guiding gearbox under the front feeding roller and the rear feeding roller are directly connected to the crossbeam (the power source is directly transmitted to the front feeding roller and the rear feeding roller to achieve coaxial double-speed transmission), reducing power loss and improving transmission efficiency; ② The knife plates of the front feeding roller and the rear feeding roller rotate crosswise. Every two layers of the material pushing tooth plates of the rear feeding roller wrap around the feeding knife plate and the corrugated knife plate of the front feeding roller to rotate, making the material cutting more uniform and reducing the material loss rate; ③ Improve the tail of the dividing fork (the original shape of the tail of the dividing fork is a round tube type, with a small contact area with the material). Design the tail of the dividing fork into a dividing guide plate. According to the feeding situation, bend the dividing guide plate at different angles to increase the contact area with the material and quickly and efficiently feed the material into the front feeding roller; ④ Optimize the comb tooth plate (the original comb tooth plate is an integral type, which is troublesome to disassemble and repair and the gap cannot be adjusted). Since the front comb tooth plate enters the material more and more frequently, the wear of the front comb tooth plate is relatively large. Design the comb tooth plate into a split type, which is convenient for repairing and replacing the front comb tooth plate. Since the connection part of the rear comb tooth plate uses a straight groove, the distance between the front comb tooth plate and the rear feeding roller can be adjusted according to the crop type, effectively improving the feeding efficiency; The front comb tooth plate is connected and fixed to the rear comb tooth plate by bolts, and the rear comb tooth plate is fixed to the cutter bar frame through support columns.

Claims

1. An adjustable split comb plate silage harvester header, characterized in that: The invention comprises a front feeding roller (2), a rear feeding roller (3), a grass dividing fork (5) and a split comb tooth plate (6) arranged on a cutting table frame. The front end of the front feeding roller (2) is provided with a grass dividing fork (5). The blades of the front feeding roller (2) and the rear feeding roller (3) are arranged in a cross-staggered manner. A split comb tooth plate (6) is provided between the front feeding roller (2) and the rear feeding roller (3). The split comb tooth plate (6) comprises a front comb tooth plate and a rear comb tooth plate. The front comb tooth plate and the rear comb tooth plate are detachably connected. The matching clearance between the front comb tooth plate and the rear comb tooth plate is adjustable.

2. The adjustable split comb plate silage harvester header according to claim 1, characterized in that: The front comb tooth plate comprises front comb teeth one (6-1), front comb teeth two (6-2), front comb teeth connecting plate one (6-3), front comb teeth connecting plate two (6-4), front guide plate one (6-5) and front guide plate two (6-6). The number of front comb teeth one (6-1) and front comb teeth two (6-2) is two. The two front comb teeth one (6-1) and the two front comb teeth two (6-2) are arranged in parallel. The two front comb teeth one (6-1) are connected by the front comb teeth connecting plate one (6-3). The front guide plate one (6-5) is provided between the two front comb teeth one (6-1); the two front comb teeth two (6-2) are connected by the front comb teeth connecting plate two (6-4). The front guide plate two (6-6) is provided between the two front comb teeth two (6-2).

3. The adjustable split comb plate silage harvester header according to claim 2, characterized in that: The rear comb tooth plate comprises rear comb teeth (6-8), a rear comb tooth connecting plate 1 (6-9), a rear comb tooth connecting plate 2 (6-10), a rear guide plate (6-11) and a support column (6-12). The number of the rear comb teeth (6-8) is four. The four rear comb teeth (6-8) are arranged in parallel. The front ends of the two upper rear comb teeth (6-8) are connected through the rear comb tooth connecting plate 1 (6-9), and the front ends of the two lower rear comb teeth (6-8) are connected through the rear comb tooth connecting plate 2 (6-10); the rear ends of the four rear comb teeth (6-8) are connected by mortise and tenon joints through the rear guide plate (6-11), and the support column (6-12) passes through the four rear comb teeth (6-8) and is fixedly connected to the cutting table frame.

4. The adjustable split comb plate silage harvester header according to claim 3, characterized in that: The front comb tooth connecting plate 1 (6-3) and the front comb tooth connecting plate 2 (6-4) are both provided with a plurality of circular holes, and the rear comb tooth connecting plate 1 (6-9) and the rear comb tooth connecting plate 2 (6-10) are both provided with a plurality of straight slots, the circular holes and the straight slots matching each other, and the rear comb tooth connecting plate 1 (6-9) and the rear comb tooth connecting plate 2 (6-10) are respectively connected to the front comb tooth connecting plate 1 (6-3) and the front comb tooth connecting plate 2 (6-4) through the straight slots, the circular holes and the bolts.

5. The adjustable split comb plate silage harvester header according to claim 4, characterized in that: The front comb teeth one (6-1) and the front comb teeth two (6-2) are both provided with fixed ribs (6-7) on their outer sides, and the front comb teeth one (6-1), the front comb teeth two (6-2) and the fixed ribs (6-7) are all provided with U-shaped grooves at their front ends; the two front comb teeth one (6-1) and the fixed ribs (6-7) are connected to the front guide plate one (6-5) via the U-shaped grooves; the two front comb teeth two (6-2) and the fixed ribs (6-7) are connected to the front guide plate two (6-6) via the U-shaped grooves.

6. The adjustable split comb plate silage harvester header according to claim 1 or 2, characterized in that: The straw dividing fork (5) comprises a straw dividing mounting frame (5-1), a straw dividing tip (5-2), a straw dividing support frame (5-3) and a straw dividing guide plate (5-4); the straw dividing mounting frame (5-1) is mounted on the lower end of the front feeding roller (2); a plurality of straw dividing support frames (5-3) are provided at the front end of the straw dividing mounting frame (5-1); each straw dividing support frame (5-3) is provided with a straw dividing tip (5-2); the straw dividing tip (5-2) is a multi-faceted pyramid structure; the rear end of the straw dividing tip (5-2) is connected to the straw dividing guide plate (5-4).

7. The adjustable split comb plate silage harvester header according to claim 1 or 2, characterized in that: The number of the front feed roller (2), the rear feed roller (3) and the split comb plate (6) are all two, and they are symmetrically arranged along the center line of the cutting table frame. The center axes of the front feed roller (2) and the rear feed roller (3) are arranged parallel to each other and are vertically arranged on the cutting table frame.

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