Half-feeding type harvester capable of separating grain head from grain stalk

Abstract

The invention belongs to the field of grain harvesters, and particularly relates to a grain head and grain stalk separation semi-feeding type harvester which comprises a vehicle body, a horizontal harvesting mechanism and a head and stalk separation mechanism, the horizontal harvesting mechanism and the head and stalk separation mechanism are sequentially arranged on the vehicle body in the grain harvesting direction, and the head and stalk separation mechanism is connected with an ear storage bin. Grain stalks harvested by the horizontal harvesting mechanism pass through the head stalk separating mechanism by means of conveying of a first conveying belt, and a grain stalk bundling mechanism is further arranged on the vehicle body. The grain stalk bundling mechanism comprises a horizontal feeding belt, a lifting stalk taking hook and a rotary clamping jaw, the feeding end of the horizontal feeding belt is connected with the output end of the first conveying belt, the lifting stalk taking hook is located above the horizontal feeding belt, the rotary clamping jaw is matched with the lifting stalk taking hook, and a rotating shaft of the rotary clamping jaw is parallel to the width direction of the horizontal feeding belt. According to the harvester, grain stalks can be bundled into bundles and then thrown out, the grain stalks are orderly and tidy, picking and tidying are convenient, and the tidying work efficiency of the grain stalks is effectively improved.

Description

Technical Field

[0001] The invention belongs to the field of grain harvesters, and in particular relates to a semi-feeding harvester for separating grain heads and grain stems. Background Art

[0002] Grain harvesters usually wait for the grains to mature, and then use a horizontal harvesting mechanism to cut off the grain stalks from the roots and transport the stalks to one side. Then, with the help of a reversing mechanism, the stalks are turned over and laid flat during transportation. The head of the stalk is separated from the stalk by a head-rod separation mechanism, and the head of the stalk is collected. The stalks are crushed and thrown out or thrown out directly. The stalks of millet can not only be used as fertilizers and feeds, but also processed into woven products, etc. However, the existing grain harvesters directly throw out the stalks, and the stalks fall into the field or the receiving hopper. The stalks are disorderly and difficult to pick up when recycling, and a lot of man-hours are required to sort them before they can be used. Therefore, there is an urgent need for a harvester that can bundle the stalks separated from the stalks to facilitate the recycling of the stalks. Summary of the invention

[0003] In order to solve the problems existing in the above-mentioned prior art, the present invention provides a semi-feeding harvester for separating the grain heads and stalks, which can bundle the grain stalks into bundles and then throw them out. The grain stalks are arranged in order and are easy to pick up and organize, thereby effectively improving the efficiency of grain stalk organization.

[0004] The specific technical solution adopted by the present invention is:

[0005] A semi-feeding harvester for separating heads and stalks of grains comprises a vehicle body, a horizontal harvesting mechanism sequentially arranged on the vehicle body along the harvesting direction of grains, and a head-and-stalk separation mechanism, wherein the head-and-stalk separation mechanism is connected to an ear storage bin, and the grain stalks harvested by the horizontal harvesting mechanism are conveyed through the head-and-stalk separation mechanism by means of a first conveyor belt. The key point is that a grain stalk baling mechanism is also arranged on the vehicle body, and the grain stalk baling mechanism comprises a horizontal feeding belt whose feeding end is connected with the output end of the first conveyor belt, a lifting and taking-up hook located above the horizontal feeding belt, and a rotating claw matched with the lifting and taking-up hook, and the rotating shaft of the rotating claw is arranged parallel to the width direction of the horizontal feeding belt.

[0006] The lifting rod hook includes a vertical telescopic cylinder and a hook body connected to the telescopic end of the vertical telescopic cylinder. The opening direction of the hook body is arranged opposite to the conveying direction of the horizontal feeding belt. The vertical telescopic cylinder is connected to the driving end of the first transverse telescopic cylinder. The hook body has the freedom to move along the axial direction of the rotating shaft with the help of the first transverse telescopic cylinder.

[0007] The lower end of the lifting rod taking hook is cone-shaped.

[0008] The rotating clamp comprises a rotating motor, a shell, a lifting frame arranged on the shell and a clamp arm hinged to the shell. The clamp arm is hinged to the lifting frame by means of a hinged rod and has the freedom to open and close with the help of the lifting frame. The shell is connected to the driving end of the rotating motor by means of a rotating shaft. A second transverse telescopic cylinder is arranged between the rotating motor and the car body. The rotating motor has the freedom to approach the horizontal feeding belt with the help of the extension and retraction of the second transverse telescopic cylinder.

[0009] The head rod separation mechanism includes an ear cutting knife and an ear cutting cylinder with a feed opening thereon, the feed opening is in a water drop-shaped structure, the grain stalks pass through the feed opening with the help of the first conveyor belt, the wide part and the narrow part of the feed opening are arranged in sequence along the conveying direction of the first conveyor belt, and the narrow part is located obliquely above the wide part, the ear cutting knife is coaxially installed in the ear cutting cylinder to form a cutting fit with the inner wall of the ear cutting cylinder, and the cutting height of the ear cutting knife is matched with the narrow part.

[0010] The vehicle body is also provided with a guide plate which is arranged upwardly and obliquely along the conveying direction of the first conveyor belt. The two ends of the guide plate are respectively matched with the horizontal harvesting mechanism and the feeding port. The guide plate is located below the grain head and is used to support the grain head.

[0011] A group of straw teeth are arranged in an array on the first conveyor belt, and a straw detaching roller matched with the output end of the first conveyor belt is arranged on the frame. The straw detaching roller is arranged parallel to the driving shaft of the first conveyor belt and is located above the straw teeth, and a group of lifting rods are provided on the straw detaching roller.

[0012] A group of rod grooves are arranged in an array on the horizontal feeding belt, a second conveyor belt is arranged between the output end of the first conveyor belt and the feed end of the horizontal feeding belt, and the conveying direction of the second conveyor belt is arranged parallel to the horizontal feeding belt.

[0013] The beneficial effects of the present invention are:

[0014] The present invention adopts a straw baling mechanism to bundle the straws separated from the grain heads and then throw them out, which effectively improves the neatness of the straws, and the bundled straws are easy to pick up, which helps to improve the work efficiency of straw sorting.

[0015] The straw baling mechanism uses a lifting hook to hook the straw on the horizontal feeding belt to form a straw rope, and the rotating clamp grasps the straw and rotates, and the straw rope is wound around the straw held by the rotating clamp to form a straw bundle. The horizontal feeding belt moves forward so that the straw bundle is located below the lifting hook, and then the lifting hook descends to insert the grasped straw into the straw bundle, and the lifting hook is removed from the straw bundle to complete the bundling of the straw bundle. The straw is used instead of the bundling rope or bundling belt, and there is no need to separately set up the bundling rope, bundling belt, etc., which is environmentally friendly and energy-saving.

[0016] The first conveyor belt is used to convey the grain stalks with grain heads to the ear cutting cylinder for separation of the grain heads and stems. During transportation, the grain stalks are placed on the first conveyor belt, and the drooping grain heads are fed into the ear cutting cylinder through the feeding port and are cut and separated by the rotating ear cutting knife; the grain stalks with grain heads are harvested by the horizontal harvesting mechanism and conveyed to the head-stem separation mechanism. During the separation process, there is no need to change the direction of the grain stalks with grain heads to a horizontal state, which avoids the swinging of the grain heads and prevents the dry grains from falling off the grain heads, effectively reducing the grain loss rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a top view of the horizontal harvesting mechanism, the head-stem separation mechanism and the straw baling mechanism;

[0018] Figure 2 It is a schematic diagram of the assembly of the lifting rod hook and the horizontal feeding belt;

[0019] Figure 3 It is a top view of the second transverse telescopic cylinder, the rotating clamping claw and the horizontal feeding belt;

[0020] Figure 4 It is the front view of the rotating clamp and the horizontal feeding belt;

[0021] Figure 5 It is the structural schematic diagram of the ear cutting tube;

[0022] Figure 6 It is a structural schematic diagram of the present invention;

[0023] In the attached drawings, 1. vehicle body, 2. horizontal harvesting mechanism, 3. head-stem separation mechanism, 4. ear storage bin, 5. first conveyor belt, 6. grain straw baling mechanism, 7. horizontal feeding belt, 8. lifting and removing stem hook, 9. rotating clamp, 10. rotating shaft, 11. first transverse telescopic cylinder, 12. shell, 13. lifting frame, 14. clamp arm, 15. ear cutting knife, 16. feeding port, 17. ear cutting cylinder, 18. wide part, 19. narrow part, 20. guide plate, 21. grain straw clamping teeth, 22. grain straw separation roller, 23. picking rod, 24. rod separation groove, 25. second conveyor belt, 26. articulated rod, 27. second transverse telescopic cylinder, 28. rotating motor, and the arrow represents the feeding direction of the horizontal feeding belt. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments:

[0025] Specific implementation examples Figure 1-6As shown, the present invention relates to a semi-feeding harvester for separating grain heads and stems, comprising a vehicle body 1, a horizontal harvesting mechanism 2 and a head-stem separation mechanism 3 which are sequentially arranged on the vehicle body 1 along the harvesting direction of grains, the head-stem separation mechanism 3 being connected to an ear storage bin 4, the grain stems harvested by the horizontal harvesting mechanism 2 are conveyed through the head-stem separation mechanism 3 by means of a first conveyor belt 5, and the key point is that a grain stem baling mechanism 6 is also arranged on the vehicle body 1, the grain stem baling mechanism 6 comprises a horizontal feeding belt 7 whose feeding end is connected with the output end of the first conveyor belt 5, a lifting and taking-stem hook 8 located above the horizontal feeding belt 7 and a rotating clamp 9 matched with the lifting and taking-stem hook 8, and a rotating shaft 10 of the rotating clamp 9 is arranged parallel to the width direction of the horizontal feeding belt 7.

[0026] During operation, the horizontal harvesting mechanism 2 cuts off the grain stalks from the roots and harvests them, and transports them to one side. The first conveyor belt 5 receives the grain stalks output by the horizontal harvesting mechanism 2, and transports the grain stalks so that the grain heads on the grain stalks enter the head-stalk separation mechanism 3 and are cut off. Then the first conveyor belt 5 continues to transport the grain stalks separated from the grain heads to the grain stalk baling mechanism 6, and the lifting and removing hook 8 grabs the grain stalks as a grain stalk rope to wrap around the grain stalks grasped by the rotating clamp 9, completing the baling operation of the grain stalk bale. After the lifting and removing hook 8 is raised and separated from the grain stalk bale, the horizontal feeding belt 7 transports the grain stalk bale and discharges it outside the vehicle body 1.

[0027] The lifting rod hook 8 includes a vertical telescopic cylinder and a hook body connected to the telescopic end of the vertical telescopic cylinder. The opening direction of the hook body is arranged opposite to the conveying direction of the horizontal feeding belt 7. The vertical telescopic cylinder is connected to the driving end of the first transverse telescopic cylinder 11. The hook body has the freedom to move axially along the rotating shaft 10 with the help of the first transverse telescopic cylinder 11.

[0028] The vehicle body 1 is provided with a driving motor, and the horizontal harvesting mechanism 2, the head-stem separation mechanism 3, and the straw baling mechanism 6 are all connected to the driving end of the driving motor. The horizontal feeding belt 7 in the straw baling mechanism 6 is connected to the driving end of the driving motor by means of a bevel gear intermittent transmission assembly, and the horizontal feeding belt 7 feeds intermittently; the lifting and taking-stem hook 8 is connected to the driving end of the motor by means of a first transverse telescopic cylinder 11.

[0029] The horizontal feeding belt 7 in the straw bundling mechanism 6 is used to receive the straw output by the first conveyor belt 5; the lifting and taking-up hook 8 has the freedom to lift and lower vertically with the help of the vertical cylinder, the vertical cylinder drives the lifting and taking-up hook 8 to descend, and the horizontal feeding belt 7 feeds the lifting and taking-up hook 8 along the feeding direction. Since the opening direction of the hook body is arranged opposite to the feeding direction of the horizontal feeding belt 7, a strand of straw squeezes into the hook body during the feeding process and is hooked by the hook body to form a straw rope. The rotating clamp 9 grasps the end of the straw and rotates, and the straw rope is used to rotate the rotating jaws. The straw gripped by the clamp 9 is wound to form a straw bundle. The rotating clamp 9 opens and the hook body carries the straw rope upward. The horizontal feeding belt 7 moves forward by one step. The straw bundle is located below the hook body. The hook body descends to insert the end of the straw rope into the straw bundle. The friction between the straw bundle and the straw rope prevents the end of the straw rope from popping out of the straw bundle. The first transverse telescopic cylinder 11 drives the lifting hook 8 to retreat along the axial direction of the rotating shaft 10. The hook body separates from the straw bundle and the straw rope is placed in the straw bundle to complete the bundling of the straw bundle. The horizontal feeding belt 7 continues to move to transport the straw bundle. The first transverse telescopic cylinder 11 drives the hook body to move forward along the axial direction of the rotating shaft 10 to complete a bundling cycle. The vertical cylinder drives the hook body to descend and repeat the next bundling cycle.

[0030] The lower end of the lifting and taking-up hook 8 is tapered, so that it can be smoothly inserted into the bundle of rice straws through the gaps between the rice straws.

[0031] The rotating clamp 9 includes a rotating motor 28, a housing 12, a lifting frame 13 arranged on the housing 12, and a clamp arm 14 hinged to the housing 12. The clamp arm 14 is hinged to the lifting frame 13 by means of a hinge rod 26 and has the freedom of opening and closing by means of the lifting of the lifting frame 13. The housing 12 is connected to the driving end of the rotating motor 28 by means of a rotating shaft 10. A second transverse telescopic cylinder 27 is arranged between the rotating motor 28 and the vehicle body 1. The rotating motor 28 has the freedom to approach the horizontal feeding belt 7 by means of the extension and contraction of the second transverse telescopic cylinder 27. The second transverse telescopic cylinder 27 controls the rotating clamp 9 to approach or move away from the horizontal feeding belt 7, so that the rotating clamp 9 can grasp the grain stalks on the horizontal feeding belt 7. The housing 12 is provided with a lifting motor, a screw and a screw sleeve. The screw sleeve is fixedly connected to the lifting frame 13, the screw and the screw sleeve are meshed, and the screw is connected to the lifting motor by transmission. The lifting motor drives the screw to rotate forward or reverse to realize the lifting of the lifting frame 13. The lifting frame 13 descends, the clamping arm 14 closes to grip the grain stalk, and the rotating motor 28 starts to drive the rotating shaft 10 to rotate, thereby driving the shell 12 and the clamping arm 14 to rotate along the axial direction of the rotating shaft 10, and then the grain stalk gripped by the clamping arm 14 rotates, and the grain stalk rope hooked by the lifting and rod-taking hook 8 wraps around the grain stalk gripped by the clamping arm 14; the rotating motor 28 stops working, the lifting frame 13 rises, the clamping arm 14 opens, and the grain stalk bale falls onto the horizontal feeding belt 7, and the second transverse telescopic cylinder 27 drives the rotating clamp 9 to move away from the horizontal feeding belt 7, and the grain stalk bale is transported by the horizontal feeding belt 7.

[0032] The head stem separation mechanism 3 includes an ear cutting knife 15 and an ear cutting cylinder 17 with a feed opening 16 thereon. The lower end of the ear cutting cylinder 17 is connected to the lifting conveyor belt by means of an auger, and the discharge end of the lifting conveyor belt is connected to the ear storage bin 4. The grain heads in the ear cutting cylinder 17 are transported to the lifting conveyor belt by the auger, and are lifted into the ear storage bin 4 by the lifting conveyor belt; the feed opening 16 is a water drop-shaped structure, and the grain stalks pass through the feed opening 16 with the help of the first conveyor belt 5. The wide part 18 and the narrow part 19 of the feed opening 16 are arranged in sequence along the conveying direction of the first conveyor belt 5, and the narrow part 19 is located obliquely above the wide part 18. The ear cutting knife 15 is coaxially installed in the ear cutting cylinder 17 to form a cutting match with the inner wall of the ear cutting cylinder 17, and the cutting height of the ear cutting knife 15 is matched with the narrow part 19.

[0033] When millet is ripe, the weight of the ear of millet, or the head of millet, increases, and the head of millet hangs down on the stalk, with the stalk and the head of millet forming an inverted J shape. The first conveyor belt 5 conveys the grain stalks harvested by the horizontal harvesting mechanism 2 to the ear cutting cylinder 17, and the grain stalks are overlapped on the first conveyor belt 5. During the conveying process, the drooping grain heads enter the ear cutting cylinder 17 from the wide part 18 of the feeding port 16 and continue to be conveyed toward the narrow part 19, and the grain stalks at the end of the grain heads are overlapped on the lower edge of the feeding port 16, and the lower edge of the feeding port 16 forms a hook with the grain heads to prevent the grain heads from detaching from the ear cutting cylinder 17; the first conveyor belt 5 continues to convey, and the grain stalks with the grain heads move along the lower edge of the feeding port 16 to the narrow part 19, and the narrow part 19 clamps the grain stalks, and the ear cutting knife 15 rotates in the ear cutting cylinder 17 to cut and separate the grain stalks and the grain heads clamped by the narrow part 19; the grain heads separated from the grain stalks naturally fall into the ear cutting cylinder 17 due to the influence of gravity, and the first conveyor belt 5 continues to convey the grain stalks outside the ear cutting cylinder 17, so that the grain stalk bundling mechanism 6 bundles the grain stalks. The harvester does not have a reversing mechanism for the leading straw, which avoids the head of the grain from swinging sharply, helps to shorten the conveying length of the leading straw, reduces the influence of the vibration of the vehicle body on the head of the grain, and largely avoids the shedding of grains before the head of the grain enters the ear cutting tube 17, thereby reducing the grain loss rate.

[0034] The vehicle body 1 is also provided with a guide plate 20 which is arranged upwardly and obliquely along the conveying direction of the first conveyor belt 5. The two ends of the guide plate 20 are respectively matched with the horizontal harvesting mechanism 2 and the feed port 16. The guide plate 20 is located below the head of the grain to support the head of the grain. When the grain stalks are harvested by the horizontal harvesting mechanism 2 and enter the first conveyor belt 5, the head of the grain droops and is supported by the guide plate 20. Even if grains fall from the head of the grain, they will be collected by the guide plate 20, and at the same time, the grain head is prevented from being scraped against the edge of the feed port 16 when entering the feed port 16 and falling into the field; and the grains falling on the guide plate 20 are swept by the rear head of the grain into the ear cutting tube 17, further preventing the loss of grains.

[0035] The cross-section of the guide plate 20 is arc-shaped, and the lower end of the guide plate 20 is upwardly tilted, which can prevent the loss of grains and guide the grain heads. The grain heads are supported by the guide plate 20 and enter the feed port 16, which helps to reduce the setting length of the feed port 16 in the circumferential direction of the ear cutting barrel 17, thereby reducing the occurrence of grains in the ear cutting barrel 17 splashing outward.

[0036] A group of intervally arranged grain straw teeth 21 are arranged in an array on the first conveyor belt 5, and the grain straw teeth 21 clamp the grain straws on the first conveyor belt 5, and effectively push the grain straws to be transported along the conveying direction with the first conveyor belt 5; a grain straw disengagement roller 22 which is matched with the output end of the first conveyor belt 5 is arranged on the frame, and the grain straw disengagement roller 22 is arranged parallel to the driving shaft of the first conveyor belt 5 and is located above the grain straw teeth 21, and a group of lifting rods 23 are provided on the grain straw disengagement roller 22, which lift the grain straws at the output end of the first conveyor belt 5 and move the grain straws along the conveying direction of the first conveyor belt 5, so that the grain straws are effectively separated from the first conveyor belt 5, and on the other hand, by controlling the speed of the grain straw disengagement roller 22, the linear speed of the lifting rod 23 is made greater than the linear speed of the grain straw teeth 21, and the lifting rod 23 first pushes the upper end of the grain straw outward, so that the grain straws fall outward along the conveying direction of the first conveyor belt 5.

[0037] A group of straw grooves 24 are arranged in an array on the horizontal feeding belt 7, and a second conveyor belt 25 is arranged between the output end of the first conveyor belt 5 and the feed end of the horizontal feeding belt 7. The conveying direction of the second conveyor belt 25 is arranged parallel to the horizontal feeding belt 7. Since the straw is tilted outward along the conveying direction of the first conveyor belt 5 when it is output by the first conveyor belt 5, the second conveyor belt 25 and the horizontal feeding belt 7 can be arranged perpendicular to the conveying direction of the first conveyor belt 5 to reduce the width of the vehicle body 1. Specifically, the first conveyor belt 5 is arranged along the width direction of the vehicle body 1, and the second conveyor belt 25 and the horizontal feeding belt 7 are arranged along the width direction of the vehicle body 1. The horizontal feeding belt 7 and the second conveyor belt 25 are arranged in the longitudinal direction, and the horizontal feeding belt 7 and the second conveyor belt 25 are arranged in sequence along the travel direction of the vehicle body 1, and the conveying direction of the horizontal feeding belt 7 and the second conveyor belt 25 is opposite to the travel direction of the vehicle body 1; the second conveyor belt 25 receives the rice stalks output by the first conveyor belt 5 and conveys them to the rear of the vehicle body 1, and the rice stalks output by the second conveyor belt 25 fall into the bar dividing groove 24 on the horizontal feeding belt 7 in sequence, and the horizontal feeding belt 7 moves intermittently, so that each bar dividing groove 24 receives a cluster of rice stalks, and the rotating clamp 9 and the lifting bar hook 8 bundle the rice stalks in the same bar dividing groove 24 into a rice stalk bundle. When the rice stalk bundle reaches the discharge end of the horizontal feeding belt 7, it falls into the field or is received by the receiving hopper, which is convenient for picking up and sorting. The rice stalks discharged by the harvester are neat and orderly, the sorting work of the rice stalks is greatly simplified, and the work efficiency is significantly improved.

Claims

1. A semi-feeding harvester for separating grain heads and stalks, comprising a vehicle body (1), a horizontal harvesting mechanism (2) sequentially arranged on the vehicle body (1) along the harvesting direction of grains, and a head-stalk separation mechanism (3), wherein the head-stalk separation mechanism (3) is connected to an ear storage bin (4), and the grain stalks harvested by the horizontal harvesting mechanism (2) are conveyed through the head-stalk separation mechanism (3) by means of a first conveyor belt (5), characterized in that: The vehicle body (1) is also provided with a grain straw baling mechanism (6), which comprises a horizontal feeding belt (7) whose feeding end is connected with the output end of the first conveyor belt (5), a lifting and removing hook (8) located above the horizontal feeding belt (7), and a rotating clamp (9) matched with the lifting and removing hook (8), wherein the rotating shaft (10) of the rotating clamp (9) is arranged parallel to the width direction of the horizontal feeding belt (7).

2. A semi-feeding harvester for separating the head and stalk of grains according to claim 1, characterized in that: The lifting rod hook (8) includes a vertical telescopic cylinder and a hook body connected to the telescopic end of the vertical telescopic cylinder. The opening direction of the hook body is arranged opposite to the conveying direction of the horizontal feeding belt (7). The vertical telescopic cylinder is connected to the driving end of the first transverse telescopic cylinder (11). The hook body has the freedom to move axially along the rotating shaft (10) with the help of the first transverse telescopic cylinder (11).

3. A semi-feeding harvester for separating head and stem of grains according to claim 1, characterized in that: The lower end of the lifting rod taking hook (8) is cone-shaped.

4. A semi-feeding harvester for separating grain heads and stems according to claim 1, characterized in that: The rotating clamp (9) comprises a rotating motor (28), a housing (12), a lifting frame (13) arranged on the housing (12), and a clamp arm (14) hinged to the housing (12); the clamp arm (14) is hinged to the lifting frame (13) by means of a hinge rod (26) and has the freedom to open and close by means of the lifting frame (13); the housing (12) is connected to the driving end of the rotating motor (28) by means of a rotating shaft (10); a second transverse telescopic cylinder (27) is arranged between the rotating motor (28) and the vehicle body (1); the rotating motor (28) has the freedom to approach the horizontal feeding belt (7) by means of the extension and retraction of the second transverse telescopic cylinder (27).

5. The semi-feeding harvester for separating the head and stalk of grain according to claim 1, characterized in that: The head rod separation mechanism (3) comprises an ear cutting knife (15) and an ear cutting cylinder (17) on which an inlet (16) is provided. The inlet (16) is in a water drop-shaped structure. The grain stalks pass through the inlet (16) by means of the transportation of the first conveyor belt (5). The wide part (18) and the narrow part (19) of the inlet (16) are arranged in sequence along the transportation direction of the first conveyor belt (5), and the narrow part (19) is located obliquely above the wide part (18). The ear cutting knife (15) is coaxially installed in the ear cutting cylinder (17) to form a cutting fit with the inner wall of the ear cutting cylinder (17). The cutting height of the ear cutting knife (15) is matched with the narrow part (19).

6. A semi-feeding harvester for separating head and stem of grains according to claim 5, characterized in that: The vehicle body (1) is also provided with a guide plate (20) which is arranged obliquely upward along the conveying direction of the first conveyor belt (5); the two ends of the guide plate (20) are respectively matched with the horizontal harvesting mechanism (2) and the feed inlet (16); the guide plate (20) is located below the head of the grain and is used to support the head of the grain.

7. A semi-feeding harvester for separating head and stem of grains according to claim 1, characterized in that: A group of grain straw gripping teeth (21) are arranged in an array on the first conveyor belt (5), and a grain straw detaching roller (22) matched with the output end of the first conveyor belt (5) is arranged on the frame. The grain straw detaching roller (22) is arranged parallel to the driving shaft of the first conveyor belt (5) and is located above the grain straw gripping teeth (21), and a group of lifting rods (23) are arranged on the grain straw detaching roller (22).

8. The semi-feeding harvester for separating the head and stalk of grain according to claim 1, characterized in that: A group of rod grooves (24) are arranged in an array on the horizontal feeding belt (7), and a second conveyor belt (25) is arranged between the output end of the first conveyor belt (5) and the feed end of the horizontal feeding belt (7), and the conveying direction of the second conveyor belt (25) is arranged parallel to the horizontal feeding belt (7).

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