Double-moving-cutter shearing chain type green feed corn header

Abstract

A double-moving-cutter shearing chain type green feed corn header relates to the technical field of agricultural machinery and comprises a rack, a seedling dividing device, a seedling blocking device, a cutting and conveying device, a feeding device, a transmission system and the like. The grain dividing device consists of side grain dividers, a middle grain divider, grain dividers and grain dividing forks; the grain blocking device is composed of a grain blocking rod and a grain blocking rod adjusting frame. The cutting and conveying device is composed of a clamping, cutting and conveying mechanism and a lower movable knife chain type cutter. The feeding device is composed of a transverse feeding roller and a longitudinal feeding roller. The transmission system is composed of a power input box, a worm and gear set, a reversing box, a first gear box and the like. The header adopts an operation mode of double-moving-cutter efficient low-consumption cutting and three-point clamping stable conveying, cutting resistance and energy consumption can be effectively reduced, and the problems of lodging loss, header winding and blocking and the like are reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of agricultural machinery, and in particular relates to a green corn cutting platform with double movable knives and shear chains. Background Art

[0002] Green corn refers to a type of corn that is harvested during the harvest period, including the whole corn plant including the cobs, and then chopped and processed and used directly or after silage as livestock feed. Compared with grain corn, it has high nutritional value and rich yield, and is an important source of feed in the livestock industry. The header is one of the core components of the green corn harvester, which is of great significance for ensuring the efficiency and quality of green corn harvesting. Existing headers are mainly divided into reciprocating headers, disc headers and chain headers. The reciprocating header uses a movable and fixed knife to cut with support, which has the characteristics of simple structure and low cost, but the cutting efficiency is low and the service life is poor. During operation, the cutting knife is close to the ground, and the straw carries a lot of soil, which makes the feed quality poor. The disc header adopts a sawing and unsupported cutting method, which has the characteristics of fast cutting speed and high efficiency, but the header structure is complex and the working width is small. The tower conveying mechanism is used to transport the straw, which is easy to cause the straw to fall, and in serious cases, it will entangle and block the header. The chain cutter uses a chain to drive the cutter to complete cyclic cutting. It has the characteristics of simple structure of reciprocating cutter and high efficiency of disc cutter. It is currently mainly used in green fodder harvesters produced by Germany's Koroni company, but the cutter is too wide and is not suitable for my country's national conditions. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a double-moving knife shear chain type green corn harvesting header based on "double-moving knife high-efficiency and low-consumption cutting" and "three-point clamping and stable transportation", which is used to solve the current green corn harvester header's low operating efficiency, high energy consumption, large harvesting losses, easy entanglement and blockage of straw, and meet the green corn harvester's operating requirements in terms of high efficiency, high quality and low consumption.

[0004] To achieve the above purpose, the technical solution of the present invention is as follows: A double-moving knife shear chain type green corn cutting platform, comprising a frame, a grain dividing device, a grain blocking device, a cutting and conveying device, a feeding device and a transmission system; the grain dividing device is composed of a side grain divider, a middle grain divider, a grain divider, a grain dividing fork, a guide belt and a grain divider mounting frame, the grain dividing device is located at the front of the cutting platform, the side grain dividers are symmetrically fixed on the left and right sides of the front of the frame, the middle grain divider is fixed to the middle of the front of the frame, the grain divider is fixed to the frame through the grain divider mounting frame and is symmetrically arranged in the middle of the interval between the side grain divider and the middle grain divider, the grain dividing fork is symmetrically fixed between the side grain divider, the grain divider and the middle grain divider, the rear end of the guide belt is cantilevered, and the front end is fixed to the rear of the grain divider and the grain dividing fork; the grain blocking device is composed of a grain blocking rod and a grain blocking rod adjustment frame, The rice-blocking device is located at the top of the frame, the rice-blocking rod adjustment frame is hinged on the top of the frame, and the rice-blocking rod is fixed on the rice-blocking rod adjustment frame; the cutting and conveying device is composed of a clamping and cutting conveying mechanism and a lower movable knife chain cutter, wherein the clamping and cutting conveying mechanism is composed of an upper rice-pushing tooth, a lower rice-pushing tooth, a rice-pushing tooth mounting plate, a conveying chain plate, a slotted conveying chain plate, an upper conveying chain, and an upper movable knife chain cutter, the upper conveying chain is composed of a first inner chain link, an outer chain link, a first sleeve, and a long pin shaft, the upper movable knife chain cutter is composed of an upper special-shaped chain link, a second inner chain link, a second sleeve, an upper blade and a countersunk bolt, wherein the upper movable knife chain cutter, the clamping and cutting conveying mechanism are connected to the upper conveying chain by a long pin shaft, and the three move synchronously, and the lower movable knife chain cutter is composed of a special-shaped chain link. The machine frame is composed of a chain link, a third inner chain link, a third sleeve, a short pin shaft and a lower blade. The cutting and conveying device is symmetrically arranged on both sides of the frame, wherein the clamping cutting and conveying mechanism is arranged on the upper side of the cutting and conveying device; the lower movable knife chain cutter is arranged on the lower side of the cutting and conveying device; the upper blade is located at the bottom of the upper movable knife chain cutter, and the lower blade is located at the top of the lower movable knife chain cutter. The lower blade and the upper blade are respectively installed on the corresponding lower special-shaped chain link and upper special-shaped chain link through countersunk bolts. The upper special-shaped chain link is combined with the second inner chain link to form the upper movable knife chain cutter, and the lower special-shaped chain link is combined with the third inner chain link to form the lower movable knife chain cutter. The upper reed-pulling teeth and the lower reed-pulling teeth are respectively fixed on the slotted conveying chain plate through the reed-pulling tooth mounting plate, and the upper reed-pulling teeth and the lower reed-pulling teeth are respectively fixed on the slotted conveying chain plate through the reed-pulling tooth mounting plate. , the weed tooth mounting plate, the slotted conveying chain plate, the upper special-shaped chain link and the upper blade form a slotted chain plate group from top to bottom, and the first inner chain link, the conveying chain plate and the second inner chain link form a conveying chain plate group from top to bottom. The slotted chain plate group and the chain plate group are connected by a long pin shaft to form a clamping and cutting conveying mechanism. The clamping and cutting conveying mechanism is driven by the third gear box, and the upper blade rotates clockwise along the movement direction of the chain; the lower movable knife chain cutter is driven by the first gear box, and the lower blade rotates counterclockwise along the movement direction of the chain. The upper and lower movable knives rotate at the same speed and in opposite directions; the feeding device consists of a transverse feeding roller and a longitudinal feeding roller. The feeding device is installed at the rear of the frame, the transverse feeding roller is installed on the top of the feeding device, and the longitudinal feeding roller is symmetrically installed on both sides of the inside of the feeding device;The transmission system consists of a power input box, a worm gear set, a reversing box, a first gear box, a second gear box, a lower movable knife transmission sprocket set, a third gear box and an upper movable knife transmission sprocket set; the power input box in the transmission system is installed at the bottom of the left side of the feeding device, the worm gear set is installed at the bottom of the feeding device, the reversing box is installed at the bottom of the right side, the first gear box is installed at the right side of the middle of the cutting and conveying device, the second gear box is installed at the bottom of the cutting and conveying device, the lower movable knife transmission sprocket set is installed on the right side of the cutting and conveying device, the third gear box is installed on the left side of the middle of the cutting and conveying device, and the upper movable knife transmission sprocket set is installed on the left side of the cutting and conveying device. ;

[0005] The crop divider, the crop dividing fork and the guide belt are welded together. The front ends of the crop divider and the crop dividing fork are both conical, and the guide belt is arc-shaped at the front end and straight-line-shaped at the rear end.

[0006] The straw blocking rod adjustment frame is hinged to the frame, and a damping member is arranged between the straw blocking rod adjustment frame and the frame. The height of the straw blocking rod can be changed by adjusting the angle of the straw blocking rod adjustment frame, and the length of the straw blocking rod is greater than the width of the cutting platform.

[0007] The clamping, cutting and conveying mechanism and the upper movable knife chain cutter are clearance-matched by a long pin shaft, and the lower special-shaped chain link and the third inner chain link in the lower movable knife chain cutter are interference-matched by a short pin shaft.

[0008] The blades in the upper movable knife chain cutter and the lower movable knife chain cutter correspond to each other one by one, and the cutting speeds of the blades are consistent but the cutting directions are opposite.

[0009] The lowest point of the cutting operation of the lower blade in the lower movable knife chain cutter is 100 mm above the ground.

[0010] The upper blade and the lower blade are both made of 65Mn, the blade surface adopts an arc-shaped design, and the gap between the upper and lower moving blades is 2 mm.

[0011] The slotted conveyor chain plate and the conveyor chain plate are both bent, and the center distance of the circular holes on both sides after bending is 101.6 mm of the chain pitch.

[0012] The longitudinal feeding roller center distance of the feeding device is greater than the minimum distance between the cutting and conveying devices on the left and right sides of the cutting platform.

[0013] The upper sprocket and the middle sprocket in the lower movable knife transmission sprocket group are internally provided with bearings, and the lower sprocket in the upper movable knife transmission sprocket group is internally provided with bearings.

[0014] The beneficial effects of the present invention are: 1. The double-moving knife shearing cutting principle can effectively reduce the moving knife operation stroke. At the same time, under the three-point clamping effect of the upper and lower straw teeth, the green corn stalks can be cut quickly and stably, thereby improving the cutting efficiency and quality.

[0015] 2. An arc-shaped blade based on the principle of sliding cutting and saving effort is designed. The edge curve of the blade can better match the cross-section of the stem, thereby ensuring that the upper and lower blades exert a better shearing effect on the stem, thereby reducing cutting resistance and energy consumption.

[0016] 3. The clamping and pulling structure of "upper single pulling teeth + lower double pulling teeth" can stably clamp the green corn stalks to prevent them from falling down at will after being cut, and ensure that they are smoothly transported to the center of the cutting table, thereby reducing the loss of stalks falling and reducing the entanglement and blockage of the cutting table. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a top view of the overall structure of the present invention; Figure 3 It is an axial half-section view of the cutting and conveying device of the present invention; Figure 4 It is a structural schematic diagram of the upper movable knife chain cutter of the present invention; Figure 5 It is a schematic diagram of the upper movable knife conveying chain plate unit of the present invention; Figure 6 It is a schematic diagram of the installation of the movable knife and the special-shaped chain link of the present invention; Figure 7 It is a structural schematic diagram of the lower movable knife chain cutter of the present invention; Figure 8 It is a schematic structural diagram of a feeding device of the present invention.

[0018] In the figure: 1—frame; 2—grain dividing device; 2-1—side grain divider; 2-2—middle grain divider; 2-3—grain divider; 2-4—grain dividing fork; 2-5—flow guide belt; 2-6—grain divider mounting frame; 3—grain blocking device; 3-1—grain blocking rod; 3-2—grain blocking rod adjustment frame; 4—cutting and conveying device; 4-1—clamping cutting and conveying mechanism; 4-1-1—upper grain-pushing tooth; 4-1-2—lower grain-pushing tooth; 4-1-3—grain-pushing tooth mounting plate; 4-1-4—conveying chain plate; 4-1-5—grooved conveying chain plate; 4-2—lower moving knife chain cutter; 4-2-1—lower special-shaped chain link; 4-2-2—third inner chain link; 4-2-3—third sleeve; 4-2-4—short pin; 4-2-5—lower blade; 4-3—upper conveyor chain; 4-3-1—first inner link; 4-3-2—outer link; 4-3-3—first sleeve; 4-3-4—long pin; 4-4—upper movable knife chain cutter; 4-4-1—upper special-shaped link; 4-4-2—second inner link; 4-4-3—second sleeve; 4-4-4—upper blade; 4-4-5—countersunk bolt; 5—feeding device; 5-1—transverse feeding roller; 5-2—longitudinal feeding roller; 6—transmission system; 6-1—power input box; 6-2—worm gear set; 6-3—reversing box; 6-4—first gear box; 6-5—second gear box; 6-6—lower movable knife transmission sprocket set; 6-7—third gear box; 6-8—upper movable knife transmission sprocket set. DETAILED DESCRIPTION

[0019] like Figures 1 to 8As shown, a double-moving blade shear chain type green corn cutting platform comprises a frame 1, a straw dividing device 2, a straw blocking device 3, a cutting and conveying device 4, a feeding device 5 and a transmission system 6; the straw dividing device 2 is composed of a side straw divider 2-1, a middle straw divider 2-2, a straw divider 2-3, a straw dividing fork 2-4, a guide belt 2-5 and a straw divider mounting frame 2-6, the straw dividing device 2 is located at the front of the cutting platform, the side straw divider 2-1 is symmetrically fixed to the left and right sides of the front of the frame 1, the middle straw divider 2-2 is fixed to the middle of the front of the frame 1, and the straw divider 2-3 is fixed to the frame (1) through the straw divider mounting frame (2-6) and is symmetrical. It is arranged in the middle of the interval between the side straw divider 2-1 and the middle straw divider 2-2, and the straw dividing fork 2-4 is symmetrically arranged between the side straw divider 2-1, the straw divider 2-3 and the middle straw divider 2-2 respectively. The rear end of the guide belt 2-5 is cantilevered, and the front end is fixed to the rear of the straw divider 2-3 and the straw dividing fork 2-4; the straw blocking device 3 is composed of a straw blocking rod 3-1 and a straw blocking rod adjustment frame 3-2, the straw blocking device 3 is located at the top of the frame 1, the straw blocking rod adjustment frame 3-2 is hinged on the top of the frame 1, and the straw blocking rod 3-1 is fixed on the straw blocking rod adjustment frame 3-2; the cutting and conveying device 4 is composed of a clamping cutting and conveying mechanism 4-1, a lower moving knife chain cutting mechanism 4-2, and a lower moving knife chain cutting mechanism 4-3. The clamping, cutting and conveying mechanism 4-1 is composed of an upper reed-pushing tooth 4-1-1, a lower reed-pushing tooth 4-1-2, a reed-pushing tooth mounting plate 4-1-3, a conveying chain plate 4-1-4, a slotted conveying chain plate 4-1-5, an upper conveying chain 4-3, and an upper movable knife chain cutter 4-4. The upper conveying chain 4-3 is composed of a first inner chain link 4-3-1, an outer chain link 4-3-2, a first sleeve 4-3-3, and a long pin 4-3-4. The upper movable knife chain cutter 4-4 is composed of an upper special-shaped chain link 4-4-1, a second inner chain link 4-4-2, a second sleeve 4-4-3, an upper blade 4-4-4 and countersunk bolts 4-4-5, wherein the upper movable knife chain cutter 4-4, the clamping cutting conveying mechanism 4-1 and the upper conveying chain 4-3 are connected through the long pin shaft 4-3-4, and the three move synchronously, the lower movable knife chain cutter 4-2 is composed of a special-shaped chain link 4-2-1, a third inner chain link 4-2-2, a third sleeve 4-2-3, a short pin shaft 4-2-4 and a lower blade 4-2-5, and the cutting conveying device 4 is symmetrically arranged on both sides of the frame 1, wherein the clamping cutting conveying mechanism 4-1 is arranged on the upper side of the cutting conveying device 4; the lower movable knife chain cutter 4-2 is arranged on the lower side of the cutting conveying device 4;The upper blade 4-4-4 is located at the bottom of the upper movable knife chain cutter 4-4, and the lower blade 4-2-5 is located at the top of the lower movable knife chain cutter 4-2. The lower blade 4-2-5 and the upper blade 4-4-4 are respectively installed on the corresponding lower special-shaped chain link 4-2-1 and upper special-shaped chain link 4-4-1 through countersunk bolts 4-4-5. The upper special-shaped chain link 4-4-1 is combined with the second inner chain link 4-4-2 to form the upper movable knife chain cutter 4-4, and the lower special-shaped chain link 4-2-1 is combined with the third inner chain link 4-2-2 to form the lower movable knife chain cutter 4-2. The upper reed-pushing tooth 4-1-1 and the lower reed-pushing tooth 4-1-2 are respectively connected to the reed-pushing tooth mounting plate 4-1-3 is fixed on the slotted conveying chain plate 4-1-5, and the outer chain link 4-3-2, the upper reed tooth 4-1-1, the lower reed tooth 4-1-2, the reed tooth mounting plate 4-1-3, the slotted conveying chain plate 4-1-5, the upper special-shaped chain link 4-4-1 and the upper blade 4-4-4 form a slotted chain plate group from top to bottom, and the first inner chain link 4-3-1, the conveying chain plate 4-1-4 and the second inner chain link 4-4-2 form a conveying chain plate group from top to bottom. The slotted chain plate group and the chain plate group are connected by a long pin shaft 4-3-4 to form a clamping and cutting conveying mechanism 4-1, and the clamping and cutting conveying mechanism 4-1 is driven by the third gear box 6-7. The upper blade 4 -4-4 rotates clockwise along the direction of chain movement; the lower movable knife chain cutter 4-2 is driven by the first gear box 6-4, and the lower blade 4-2-5 rotates counterclockwise along the direction of chain movement. The upper and lower movable knives rotate at the same speed and in opposite directions; the feeding device 5 is composed of a transverse feeding roller 5-1 and a longitudinal feeding roller 5-2. The feeding device 5 is installed at the rear of the frame 1, the transverse feeding roller 5-1 is installed on the top of the feeding device 5, and the longitudinal feeding roller 5-2 is symmetrically installed on both sides of the feeding device 5; the transmission system 6 is composed of a power input box 6-1, a worm gear set 6-2, a reversing box 6-3, a first gear box 6-4, a second gear box 6-5, The lower movable knife transmission sprocket group 6-6, the third gear box 6-7 and the upper movable knife transmission sprocket group 6-8 are composed; the power input box 6-1 in the transmission system 6 is installed at the bottom of the left side of the feeding device 5, the worm gear group 6-2 is installed at the bottom of the feeding device 5, the reversing box 6-3 is installed at the bottom of the right side, the first gear box 6-4 is installed at the right side of the middle of the cutting and conveying device 4, the second gear box 6-5 is installed at the bottom of the cutting and conveying device 4, the lower movable knife transmission sprocket group 6-6 is installed on the right side of the cutting and conveying device 4, the third gear box 6-7 is installed on the left side of the middle of the cutting and conveying device 4, and the upper movable knife transmission sprocket group 6-8 is installed on the left side of the cutting and conveying device 4. ;

[0020] The crop divider 2-3, the crop dividing fork 2-4 and the guide belt 2-5 are welded, and the front ends of the crop divider 2-3 and the crop dividing fork 2-4 are both conical, and the guide belt 2-5 is arc-shaped at the front end and straight-lined at the rear end.

[0021] The straw retaining rod adjustment frame 3-2 is hinged to the frame 1, and a damping member is arranged between the straw retaining rod adjustment frame 3-2 and the frame 1. The height of the straw retaining rod 3-1 can be changed by adjusting the angle of the straw retaining rod adjustment frame 3-2. The length of the straw retaining rod 3-1 is greater than the width of the cutting platform.

[0022] The clamping, cutting and conveying mechanism 4-1 and the upper movable knife chain cutter 4-4 are clearance-fitted by the long pin shaft 4-3-4, and the lower special-shaped chain link 4-2-1 and the third inner chain link 4-2-2 in the lower movable knife chain cutter 4-2 are interference-fitted by the short pin shaft 4-2-4.

[0023] The blades in the upper movable knife chain cutter 4 - 4 and the lower movable knife chain cutter 4 - 2 correspond to each other one by one, and the cutting speeds of the blades are consistent but in opposite directions.

[0024] The lowest point of the cutting operation of the lower blade 4-2-5 in the lower movable knife chain cutter 4-2 is 100 mm above the ground.

[0025] The upper blade 4-4-4 and the lower blade 4-2-5 are both made of 65Mn, the blade surface adopts an arc-shaped design, and the gap between the upper and lower moving blades is 2 mm.

[0026] The slotted conveying chain plate 4-1-5 and the conveying chain plate 4-1-4 are both bent, and the center distance of the circular holes on both sides after bending is the chain pitch of 101.6 mm.

[0027] The center distance of the longitudinal feeding rollers 5-2 of the feeding device 5 is greater than the minimum distance between the cutting and conveying devices 4 on the left and right sides of the cutting table.

[0028] The upper sprocket and the middle sprocket in the lower movable knife transmission sprocket group 6-6 are internally provided with bearings, and the lower sprocket in the upper movable knife transmission sprocket group 6-8 is internally provided with bearings.

[0029] Working process of the present invention: When the whole machine is performing field harvesting operations, the harvesting platform grass dividing device 2 and the grass blocking device 3 first contact the green corn plants, wherein the side grass dividers 2-1 on both sides of the harvesting platform gather the plants at the edge of the cutting width inward, the middle grass divider 2-2 separates the plants in the middle of the cutting width to both sides, and the grass divider 2-3 and the grass dividing fork 2-4 further separate the plants entering the area to be cut, and then the plants enter the cutting area; when the plants enter the cutting area, they are first contacted and grasped by the upper grass teeth 4-1-1, and as the machine moves forward, they are successively contacted and grasped by the lower grass teeth 4-1-2 and The upper blade 4-4-4 grabs the plants to form a three-point clamping state; then, the upper blade 4-4-4 and the lower blade 4-2-5 move in opposite directions at the same speed to quickly cut off the plants in the clamping state. The cut plants are transported in an orderly manner to the feeding device 5 in the middle of the cutting table by the upper straw teeth 4-1-1, the lower straw teeth 4-1-2 and the straw blocking rod 3-1. In the process of transporting the plants to the front of the feeding device 5, the plants are placed horizontally under the action of the straw blocking rod 3-1, and then the stems enter the feeding device 5 longitudinally and orderly for subsequent chopping.

[0030] Working principle of the present invention: During operation, the power is divided into two paths after passing through the power input box 6-1 and input into the left and right cutting table units. Among them, the power of the left cutting table unit is input by the worm gear group 6-2 and the reversing box 6-3, and the power of the right cutting table unit is input by the power input box 6-1. The power of the feeding device 5 is driven by the worm gear group 6-2 to drive the opposite longitudinal feeding roller 5-2 to rotate; when the cutting table is operating, the first gear box 6-4 drives the lower movable knife transmission sprocket group 6-6 to rotate to complete the cutting operation. At the same time, the first gear box 6-4 transmits the power to the upper movable knife transmission sprocket group 6-8 through the second gear box 6-5 and the third gear box 6-7 to complete the cutting operation with the same speed and opposite direction, so that the upper and lower movable knives can achieve the shearing action range, complete the green corn cutting, and under the action of the clamping, cutting and conveying mechanism 4-1, the straw is sent to the central feeding area; after that, the worm gear group 6-2 drives the longitudinal feeding roller 5-2 to rotate, which can realize the longitudinal and orderly feeding of the stalks into the subsequent shredding device to avoid clogging of the cutting table.

Claims

1. A double-moving blade shear chain type green corn cutting platform, comprising a frame (1), a grain dividing device (2), a grain blocking device (3), a cutting and conveying device (4), a feeding device (5) and a transmission system (6); the grain dividing device (2) is composed of a side grain divider (2-1), a middle grain divider (2-2), a grain divider (2-3), a grain dividing fork (2-4), a guide belt (2-5) and a grain divider mounting frame (2-6); the grain dividing device (2) is located at the front of the cutting platform, the side grain dividers (2-1) are symmetrically fixed on the left and right sides of the front of the frame (1), and the middle grain divider (2-3) is fixed on the left and right sides of the front of the frame (1). The crop divider (2-2) is fixed to the middle of the front of the frame (1); the crop divider (2-3) is fixed to the frame (1) through a crop divider mounting frame (2-6) and is symmetrically arranged in the middle of the interval between the side crop divider (2-1) and the middle crop divider (2-2); the crop divider fork (2-4) is symmetrically arranged between the side crop divider (2-1), the crop divider (2-3) and the middle crop divider (2-2); the guide belt (2-5) has a cantilever rear end and a front end fixed to the rear of the crop divider (2-3) and the crop divider fork (2-4); the crop blocking device (3) is composed of a crop blocking rod (3-1 ) and a straw-blocking adjusting frame (3-2), the straw-blocking device (3) is located at the top of the frame (1), the straw-blocking adjusting frame (3-2) is hinged on the top of the frame (1), and the straw-blocking rod (3-1) is fixed on the straw-blocking adjusting frame (3-2); the cutting and conveying device (4) is composed of a clamping cutting and conveying mechanism (4-1) and a lower movable knife chain cutter (4-2), wherein the clamping cutting and conveying mechanism (4-1) is composed of an upper straw-pushing tooth (4-1-1), a lower straw-pushing tooth (4-1-2), a straw-pushing tooth mounting plate (4-1-3), and a conveying chain plate (4-1-4 ), slotted conveyor chain plates (4-1-5), upper conveyor chains (4-3), and upper movable knife chain cutters (4-4), wherein the upper conveyor chain (4-3) is composed of a first inner chain link (4-3-1), an outer chain link (4-3-2), a first sleeve (4-3-3), and a long pin shaft (4-3-4), and the upper movable knife chain cutter (4-4) is composed of an upper special-shaped chain link (4-4-1), a second inner chain link (4-4-2), a second sleeve (4-4-3), an upper blade (4-4-4) and a countersunk bolt (4-4-5), wherein: The upper movable knife chain cutter (4-4), the clamping cutting conveying mechanism (4-1) and the upper conveying chain (4-3) are connected via a long pin shaft (4-3-4), and the three move synchronously. The lower movable knife chain cutter (4-2) is composed of a special-shaped chain link (4-2-1), a third inner chain link (4-2-2), a third sleeve (4-2-3), a short pin shaft (4-2-4) and a lower blade (4-2-5). The cutting conveying device (4) is symmetrically arranged on both sides of the frame (1), wherein the clamping cutting conveying mechanism (4-1) is arranged on the upper side of the cutting conveying device (4); the lower movable knife chain cutter (4-2) is arranged on the lower side of the cutting conveying device (4); the upper blade (4-4-4) is located at the bottom of the upper movable knife chain cutter (4-4), and the lower blade (4-2-5) is arranged at the bottom of the lower movable knife chain cutter (4-4). The upper movable blade chain cutter (4-2-5) is located at the top of the lower movable blade chain cutter (4-2), the lower blade (4-2-5) and the upper blade (4-4-4) are respectively installed on the corresponding lower special-shaped chain link (4-2-1) and upper special-shaped chain link (4-4-1) through countersunk bolts (4-4-5), the upper special-shaped chain link (4-4-1) and the second inner chain link (4-4-2) are combined to form the upper movable blade chain cutter (4-4), the lower special-shaped chain link (4-2-1) and the third inner chain link (4-2-2) are combined to form the lower movable blade chain cutter (4-2), the upper reed-pushing tooth (4-1-1) and the lower reed-pushing tooth (4-1-2) are respectively fixed on the slotted conveying chain plate (4-1-5) through the reed-pushing tooth mounting plate (4-1-3), and the outer chain link (4-3-2) The upper reed-pushing teeth (4-1-1), the lower reed-pushing teeth (4-1-2), the reed-pushing teeth mounting plate (4-1-3), the slotted conveying chain plate (4-1-5), the upper special-shaped chain link (4-4-1) and the upper blade (4-4-4) form a slotted chain plate group from top to bottom, and the first inner chain link (4-3-1), the conveying chain plate (4-1-4) and the second inner chain link (4-4-2) form a conveying chain plate group from top to bottom. The slotted chain plate group and the chain plate group are connected by a long pin shaft (4-3-4) to form a clamping and cutting conveying mechanism (4-1). The clamping and cutting conveying mechanism (4-1) is driven by a third gear box (6-7), and the upper blade (4-4-4) rotates clockwise along the chain movement direction; the lower movable knife chain cutter (4-2) is driven by the first gear box (6- 4) driven, the lower blade (4-2-5) rotates counterclockwise along the direction of chain movement, and the upper and lower movable knives rotate at the same speed and in opposite directions; the feeding device (5) is composed of a transverse feeding roller (5-1) and a longitudinal feeding roller (5-2), the feeding device (5) is installed at the rear of the frame (1), the transverse feeding roller (5-1) is installed on the top of the feeding device (5), and the longitudinal feeding roller (5-2) is symmetrically installed on both sides of the inside of the feeding device (5); the transmission system (6) is composed of a power input box (6-1), a worm gear group (6-2), a reversing box (6-3), a first gear box (6-4), a second gear box (6-5), a lower movable knife transmission sprocket group (6-6), a third gear box (6-7) and an upper movable knife transmission sprocket group (6-8);The power input box (6-1) in the transmission system (6) is installed at the bottom of the left side of the feeding device (5), the worm gear set (6-2) is installed at the bottom of the feeding device (5), the reversing box (6-3) is installed at the bottom of the right side, the first gear box (6-4) is installed at the right side of the middle of the cutting and conveying device (4), the second gear box (6-5) is installed at the bottom of the cutting and conveying device (4), the lower movable knife transmission sprocket set (6-6) is installed at the right side of the cutting and conveying device (4), the third gear box (6-7) is installed at the left side of the middle of the cutting and conveying device (4), and the upper movable knife transmission sprocket set (6-8) is installed at the left side of the cutting and conveying device (4). ; 2. The double-moving blade shear chain type green corn cutting platform according to claim 1, characterized in that: The crop divider (2-3), the crop dividing fork (2-4) and the guide belt (2-5) are welded together; the front ends of the crop divider (2-3) and the crop dividing fork (2-4) are both conical; the guide belt (2-5) has an arc-shaped front end and a straight-line shape at the rear end.

3. The double-moving knife shear chain type green corn cutting platform according to claim 2, characterized in that: The straw retaining rod adjustment frame (3-2) is hinged to the frame (1), and a damping member is provided between the straw retaining rod adjustment frame (3-2) and the frame (1). The height of the straw retaining rod (3-1) can be changed by adjusting the angle of the straw retaining rod adjustment frame (3-2), and the length of the straw retaining rod (3-1) is greater than the width of the cutting platform.

4. The double-moving blade shear chain type green corn cutting platform according to claim 3, characterized in that: The clamping, cutting and conveying mechanism (4-1) and the upper movable knife chain cutter (4-4) are clearance-fitted via a long pin shaft (4-3-4), and the lower special-shaped chain link (4-2-1) and the third inner chain link (4-2-2) of the lower movable knife chain cutter (4-2) are interference-fitted via a short pin shaft (4-2-4).

5. The double-moving blade shear chain type green corn cutting platform according to claim 4, characterized in that: The blades in the upper movable knife chain cutter (4-4) and the lower movable knife chain cutter (4-2) correspond to each other one by one, and the cutting speeds of the blades are consistent but in opposite directions.

6. The double-moving blade shear chain type green corn cutting platform according to claim 5, characterized in that: The lowest point of the cutting operation of the lower blade (4-2-5) of the lower movable knife chain cutter (4-2) is 100 mm above the ground.

7. The double-moving-knife shear chain type green corn cutting platform according to claim 6, characterized in that: The upper blade (4-4-4) and the lower blade (4-2-5) are both made of 65Mn, the blade surface adopts an arc-shaped design, and the gap between the upper and lower moving blades is 2 mm.

8. The double-moving-knife shear chain type green corn cutting platform according to claim 7, characterized in that: The slotted conveyor chain plate (4-1-5) and the conveyor chain plate (4-1-4) are both bent, and the center distance of the circular holes on both sides after bending is 101.6 mm of the chain pitch.

9. The double-moving blade shear chain type green corn cutting platform according to claim 8, characterized in that: The center distance of the longitudinal feeding rollers (5-2) of the feeding device (5) is greater than the minimum distance between the cutting and conveying devices (4) on the left and right sides of the cutting platform.

10. The double-moving blade shear chain type green corn cutting platform according to claim 9, characterized in that: The upper sprocket and the middle sprocket of the lower movable knife transmission sprocket group (6-6) are internally provided with bearings, and the lower sprocket of the upper movable knife transmission sprocket group (6-8) is internally provided with bearings.

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