Interval type wheat cutting machine

Abstract

According to the interval type wheat cutting machine, by integrating the header capable of ascending, descending and rotating, the clamping arms capable of synchronously moving, the ear cutter capable of being accurately controlled and the two-stage ordered conveying structure, efficient and low-loss ear row selective harvesting of wheat plants is achieved. By means of the unique linkage design of the clamping arms and the header, it is ensured that wheat straw is stably centralized and clamped before and after cutting, and missing cutting of lodging or scattered wheat and falling of wheat ears are effectively prevented; on the basis of cutting height control of a distance sensor and the adjustable header posture, the agricultural target of only cutting wheat ears is achieved, and wheat straws are reserved; due to the design that the two-stage conveying belt is matched with the baffles, it is guaranteed that the wheat ears are conveyed smoothly and orderly, and accumulation and mixing are avoided; due to the miniaturized design of the whole machine and the arrangement of the steering wheels, the wheat harvester is particularly suitable for field operation of small plots, hilly slopes and complex row spacing, and the mechanization level and the operation quality of the wheat ear harvesting link are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery, and in particular to an intermittent wheat cutter. Background Technology

[0002] Wheat is an important food crop in my country, and its breeding is a core element in improving yield and quality. In wheat breeding trials, the "ear row" planting pattern is often used to systematically compare the agronomic traits, stress resistance, and yield performance of different varieties. This pattern plants different germplasm resources or breeding materials in single rows, with each row typically 1-2 meters long and a row spacing of about 15-30 centimeters, forming dense and independent experimental units. This planting method requires strict prevention of mixing of plants or grains between different rows throughout the entire growth cycle, especially during harvest—a process known as "mechanical mixing"—to ensure the accuracy of experimental data and seed purity, providing a reliable basis for subsequent variety selection.

[0003] Currently, for small-scale, high-density, and high-purity wheat harvesting, most breeding units still rely on traditional manual methods, where operators bend over and use sickles to cut the wheat row by row. Breeding test fields are often large, with many rows of ears, making manual harvesting extremely inefficient, labor-intensive, and demanding on skilled operators. Furthermore, wheat ripening is often accompanied by adverse weather conditions such as high temperatures and heavy rainfall, including "field spoilage rains." If harvesting is not completed in time, the wheat ears are prone to sprouting and mold, resulting in irreparable losses of breeding material. While existing large combine harvesters are efficient, their bulky structure and limited mobility prevent them from operating in narrow test fields, and they easily cause mixing of grains from different rows during harvesting, completely failing to meet the stringent purity requirements of breeding experiments. During manual harvesting, the collection, bundling, and handling processes easily cause wheat ears to fall off and grains to scatter, and inconsistent operating standards among different personnel further affect harvest quality and experimental consistency.

[0004] Therefore, there is an urgent need in this field for a miniaturized, specialized harvesting device that can adapt to wheat ear-row planting patterns, achieve efficient harvesting, and absolutely guarantee seed purity, in order to solve the technical problems of low efficiency, high labor intensity, and easy mixing and loss of existing harvesting methods. Summary of the Invention

[0005] The purpose of this invention is to provide an intermittent wheat cutter to solve the problems existing in the prior art.

[0006] To achieve the above objectives, the present invention provides the following solution:

[0007] This invention provides an intermittent wheat cutter, comprising:

[0008] The machine body has wheels at both the front and rear of its bottom, which serve as the load-bearing foundation for the entire machine;

[0009] The cutting assembly, installed in the middle of the machine body, is used to align, straighten, clamp, and cut wheat plants.

[0010] A conveying component, located behind the cutting component and extending through the machine body, is used to receive and convey the ears of wheat cut by the cutting component;

[0011] A wheat storage bin, located at the rear of the machine body, is used to collect wheat ears transported by the conveying assembly;

[0012] A power unit, located at the front of the machine body, is used to provide power to the cutting assembly, the conveying assembly, and the traveling wheels.

[0013] Preferably, the cutting assembly includes:

[0014] Motion guide rails are symmetrically fixed on both sides of the machine body;

[0015] A push rod fixing bracket is fixed to the top of the motion guide rail;

[0016] The motion assembly includes a motion slider, an electric push rod, a turntable, a turntable motor, a clamping arm, a clamping arm bracket, a bracket moving motor, a cutting table rotating motor, and a first rotating gear. The motion slider is slidably mounted within the motion guide rail. The electric push rod is fixedly mounted within the push rod fixing frame, and its output end is connected to the upper end of the motion slider. A turntable mounting groove is provided on one side of the motion slider, and the turntable is mounted within this groove, with a cutting table bracket mounted on it. The turntable motor is fixedly mounted on the outer wall of the motion slider, and its output shaft is drively connected to the turntable. The turntable is provided with a first guide rail and a bracket motor slot. The lower part of the clamping arm bracket is provided with a second guide rail. The clamping arm bracket is slidably mounted on the first guide rail via the second guide rail. The center of the second guide rail is provided with a threaded hole. The output shaft of the bracket moving motor is provided with a thread. The clamping arm bracket is connected to the bracket moving motor via a thread. The clamping arm is rotatably mounted on the clamping arm bracket. A linkage shaft is provided on its inner side. The bracket moving motor is fixedly mounted in the bracket motor slot. The cutting table rotating motor is fixedly mounted on the turntable. The first rotating gear is mounted on the output shaft of the cutting table rotating motor.

[0017] A cutting table, comprising a cutting table body, a distance sensor, a cutter, a cutting drive gear, and a cutting motor, wherein the cutting table body is rotatably mounted on a cutting table bracket, and the cutting table body has a cutting guide rail inside, with a first cutting tooth at its lower end and limiters at both ends of the first cutting tooth, a wheat ear guide plate at its upper end, and a second rotating gear at its left end, the second rotating gear meshing with the first rotating gear; the distance sensor is fixedly mounted on the upper end of the cutting table body; the cutter has a cutter guide rail and a second cutting tooth, the second cutting tooth meshing with the first cutting tooth; the cutter guide rail is slidably mounted on the cutting guide rail, with a cutting drive rack at the upper end of the cutter guide rail; the cutting motor is fixedly mounted on the outside of the cutting table body, and the cutting drive gear is mounted on the output shaft of the cutting motor and meshes with the cutting drive rack; the left end of the cutting table body has a linkage shaft through hole, through which the linkage shaft passes and is slidably connected.

[0018] Preferably, the cross-sections of the motion guide rail and the motion slider are quincunx-shaped, and both surfaces are coated with a polytetrafluoroethylene wear-resistant layer.

[0019] Preferably, the first and second guide rails have dovetail-shaped cross-sections and are both coated with a polytetrafluoroethylene wear-resistant layer.

[0020] Preferably, the cross-section of the cutting guide rail and the cutter guide rail is dovetail-shaped, and both surfaces are coated with a polytetrafluoroethylene wear-resistant layer, and the contact surfaces of the first and second cutting teeth are both coated with a polytetrafluoroethylene wear-resistant layer.

[0021] Preferably, the distance between the inner side of the clamping arm and the inner side of the cutting table body is 2-100mm.

[0022] Preferably, the conveying assembly is a two-stage conveying structure, comprising:

[0023] The main conveyor belt, located behind the cutting assembly, is used to receive and initially transport the wheat ears.

[0024] A secondary conveyor belt, located below and behind the main conveyor belt, is used to receive wheat ears from the main conveyor belt and transport them to the wheat storage box or the ear outlet.

[0025] The main drive unit is used to drive the main conveyor belt to operate via a transmission belt;

[0026] A belt protection cover is fixedly installed on the left end of the machine body.

[0027] Preferably, the machine body is provided with a first baffle above the main conveyor belt, and a second baffle is provided at the upper end of the secondary conveyor belt to prevent wheat ears from splashing.

[0028] Preferably, the lower end of the ear outlet is provided with a square protrusion for fixing the collection bag, and a receiving plate for receiving the collection bag is provided below the ear outlet.

[0029] Preferably, the power assembly includes:

[0030] The engine is fixedly mounted at the front end of the machine body;

[0031] The top cover is rotatably mounted on the front top of the body;

[0032] The control terminal is installed in a groove at the front end of the body, and is protected by the top cover.

[0033] The present invention achieves the following beneficial technical effects compared to the prior art:

[0034] 1. This invention designs a compact cutting and conveying assembly for the ear row in wheat breeding experiments. Through the cooperation of the cutting and conveying assemblies, the entire process from cutting and conveying to collection is automated, solving problems such as the inability of traditional large harvesters to enter the field and the low efficiency of manual sickle harvesting;

[0035] 2. To address the challenges of lodging during wheat maturity and the "V"-shaped lateral growth of wheat ears, this invention incorporates a clamping arm and a header. Before cutting, the clamping arm actively moves towards the header, gathering, straightening, and clamping loose or tilted wheat stalks before cutting. This not only prevents the missed cutting of loose or tilted wheat but also avoids field losses caused by wheat ears vibrating and falling during cutting through the "clamp before cutting" method. The vertical lifting and rotation of the header are achieved through the coordination of motion components (electric push rod, turntable, and moving slider). After cutting, the clamping arm continues to hold the wheat ears, and the turntable rotation and the moving slider lifting accurately deliver the ears to the top of the conveying component before releasing them. This "directional gripping and precise delivery" method ensures that the wheat ears of the current row completely enter the conveying component and are not left on the header to be carried into the next row, meeting the extremely high requirements for seed purity in breeding experiments.

[0036] 3. This invention uses a distance sensor and an electric push rod to adjust the cutting height (stubble height) in real time according to the wheat height. Furthermore, the clamping arm's movable distance is designed from 2-100mm to accommodate wheat bales of different thicknesses and densities. By setting up a two-stage conveyor structure with a main conveyor belt and an auxiliary conveyor belt, along with first and second baffles, it effectively prevents the wheat ears from scattering and clogging during conveying, ensuring that all wheat ears can smoothly enter the outlet. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0039] Figure 2 This is a schematic diagram of the overall internal structure of the present invention;

[0040] Figure 3 This is a schematic diagram of the cutting component structure of the present invention;

[0041] Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle;

[0042] Figure 5 This is an exploded view of the moving component of the present invention;

[0043] Figure 6 This is a schematic diagram of the explosion of the cutting platform of the present invention;

[0044] Figure 7 This is an exploded view of the conveying component of the present invention.

[0045] In the diagram: 1. Cutting assembly; 2. Conveying assembly; 3. Power assembly; 4. Wheat storage bin; 5. Machine body; 6. Motion guide rail; 7. Push rod fixing frame; 8. Motion assembly; 9. Header; 10. Motion slider; 11. Electric push rod; 12. Turntable; 13. Turntable motor; 14. Clamping arm; 15. Clamping arm bracket; 16. Bracket moving motor; 17. Header rotating motor; 18. First rotating gear; 19. Turntable mounting slot; 20. First guide rail; 21. Bracket motor slot; 22. Second guide rail; 23. Header bracket; 24. Linkage shaft; 25. Header body; 26. Distance sensor; 27. Cutter; 2 8. Cutting drive gear; 29. ​​Cutting motor; 30. Cutting guide rail; 31. First cutting tooth; 32. Wheat ear guide plate; 33. Second rotating gear; 34. Cutter guide rail; 35. Second cutting tooth; 36. Cutting drive rack; 37. Linkage shaft through hole; 38. Main conveyor belt; 39. Secondary conveyor belt; 40. Main drive unit; 41. Transmission belt; 42. Belt protection cover; 43. Engine; 44. Top cover; 45. Control end; 46. Walking wheel; 47. First baffle; 48. Second baffle; 49. Ear outlet; 50. Limiter; 51. Square protrusion; 52. Receiving plate; 53. Secondary conveyor belt motor. Detailed Implementation

[0046] The serial numbers assigned to components in this document, such as "first," "second," etc., are merely used to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0047] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0048] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0049] The purpose of this invention is to provide an intermittent wheat cutter to solve the problems existing in the prior art.

[0050] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0051] Example 1:

[0052] like Figures 1 to 7 As shown, the present invention provides an intermittent wheat cutter, the structural design of which is closely centered on the high purity and high efficiency requirements of ear-row harvesting in wheat breeding experiments. The cutter mainly includes a body 5 as the foundation of the whole machine, a cutting component 1 responsible for performing the core harvesting action, a conveying component 2 for conveying wheat ears, a power component 3 for providing power, and a wheat storage box 4 for collecting wheat ears.

[0053] Specifically, the machine body 5 has a rectangular frame structure, with wheels 46 installed at both the front and rear ends of its bottom. The front wheels 46 also have a steering function, ensuring that the machine can move and turn flexibly in narrow rows of grain. The power unit 3 is integrated into a groove inside the front of the machine body 5, mainly including an engine 43 and a control terminal 45 that integrates control circuitry. It is protected by a rotatable and liftable top cover 44 for easy maintenance and operation.

[0054] Furthermore, the cutting assembly 1 is the core component that performs alignment, straightening, clamping, and cutting functions, and is symmetrically installed on the left and right sides of the middle of the machine body 5. Each cutting assembly 1 includes a motion guide rail 6 fixed to the side wall of the machine body 5, a push rod fixing bracket 7 installed on the top of the guide rail, a motion component 8 that can move along the guide rail, and a cutting table 9 that performs the cutting action. To ensure the smoothness and durability of the motion component 8 during the lifting process, the motion guide rail 6 and the motion slider 10 in the motion component 8 adopt a plum blossom-shaped cross-section mating method, and the mating surfaces are coated with a polytetrafluoroethylene wear-resistant layer, which effectively reduces friction and wear.

[0055] The motion component 8 has a relatively precise structure. The motion slider 10 is slidably nested within the motion guide rail 6, and its lifting is driven by an electric push rod 11 fixed within the push rod holder 7. The output end of the electric push rod 11 is hinged to the upper end of the motion slider 10. A non-through turntable mounting groove 19 is provided on one side of the motion slider 10, in which a turntable 12 is installed. The turntable 12 is driven to rotate by a turntable motor 13 fixed to the outer wall of the motion slider 10. A cutting table rotation motor 17 is fixedly mounted on the turntable 12, and its first rotating gear 18 on its output shaft drives the cutting table 9 to rotate. Simultaneously, a first guide rail 20 is machined on the turntable 12, and a clamping arm bracket 15 is slidably mounted on this first guide rail 20 via a second guide rail 22 at its lower part. The first guide rail 20 and the second guide rail 22 have a dovetail-shaped cross-section and are coated with a wear-resistant layer, ensuring the accuracy and reliability of the sliding guidance. The clamping arm bracket 15 is driven by a bracket moving motor 16 installed in the bracket motor slot 21 on the turntable 12 via a threaded transmission, allowing it to move linearly along the first guide rail 20 toward or away from the cutting table 9. The clamping arm 14 is rotatably mounted on the clamping arm bracket 15 via bearings, and two linkage shafts 24 are fixed on its inner side.

[0056] The header 9 is rotatably mounted on the turntable 12 via the header bracket 23. A second rotating gear 33 fixed to the left end of the header body 25 meshes with a first rotating gear 18 on the turntable, thereby enabling the header 9 to pitch and rotate under the drive of the header rotation motor 17. A linkage shaft through hole 37 is also provided at the left end of the header body 25, through which two linkage shafts 24 on the clamping arm 14 pass and are slidably connected. This design ensures that when the header 9 rotates, the clamping arm 14 rotates synchronously with it via the transmission of the linkage shafts 24, always maintaining a consistent relative posture with the header 9, which is crucial for subsequent clamping and delivery actions. The header body 25 contains a cutting guide rail 30, with a first cutting tooth 31 fixed at its lower end as a fixed blade. Limiters 50 are provided at both ends of the first cutting tooth 31 to prevent the moving blade from derailing. A distance sensor 26 and a wheat ear guide plate 32 are mounted on the upper end of the header body 25. The cutter 27 is equipped with a cutter guide rail 34 that slides with the cutting guide rail 30, and a second cutting tooth 35 that serves as a moving blade. The second cutting tooth 35 meshes with the first cutting tooth 31 to form a shearing pair. A cutting drive rack 36 is located at the upper end of the cutter guide rail 34, driven by a cutting motor 29 fixed to the outside of the header body 25 via a cutting drive gear 28 on its output shaft. This causes the cutter 27 to reciprocate along the cutting guide rail 30, completing the shearing action. The mating surfaces of the cutting guide rail 30 and the cutter guide rail 34, as well as the shearing contact surfaces of the first and second cutting teeth, are all coated with a polytetrafluoroethylene wear-resistant layer to extend service life and ensure smooth cutting. The gap between the inner side of the clamping arm 14 and the inner side of the header body 25 is designed to be adjustable from 2 to 100 mm, allowing it to effectively accommodate and clamp wheat straw with a diameter typically between 5 and 15 mm, which may be lodged or loose.

[0057] Furthermore, the conveying assembly 2 adopts a two-stage conveying structure, running through the middle and rear of the machine body 5. The main conveyor belt 38 is located behind the cutting assembly 1, and a first baffle 47 is provided above it to prevent the wheat ears from scattering. The auxiliary conveyor belt 39 is located below and behind the main conveyor belt 38, and a second baffle 48 is provided above it. The main drive unit 40 is fixed to the upper end of the machine body 5 and drives the main conveyor belt 38 through the transmission belt 41. The transmission belt 41 is equipped with a belt protection cover 42. The auxiliary conveyor belt 39 is driven by the auxiliary conveyor belt motor 53. The right side of the machine body 5 is provided with an ear outlet 49, and the lower end of the outlet is provided with a square protrusion 51 for securing the collection net bag. A receiving plate 52 is provided below to support the net bag. The wheat storage box 4 is installed in a groove at the rear of the machine body 5. The wheat ears enter the net bag hanging at the ear outlet 49, and then the accompanying personnel put the net bag containing the wheat into the wheat storage box 4.

[0058] The intermittent wheat cutter of this invention operates in the field following this workflow: The machine travels between rows of wheat ears via its wheels 46. Initially, the motion slider 10 is positioned at the upper end of the motion guide rail 6, and the cutter head 9 and clamping arm 14 are perpendicular to the ground. When the distance sensor 26 detects a wheat ear, the control terminal 45 commands the electric push rod 11 to extend, pushing the motion component 8 and the cutter head 9 downwards along the guide rail. Simultaneously, the cutter head rotation motor 17 starts, driving the cutter head 9 to rotate upwards to a horizontal position. At this time, the clamping arm 14 rotates synchronously via the linkage shaft 24, parallel to the cutter head 9. For wheat that may be lodged or loose, the support moving motor 16 drives the clamping arm support 15 to move towards the cutter head 9, so that the clamping arm 14 and the cutter head body 25 work together to straighten and clamp the wheat stalks between them.

[0059] When the distance sensor 26 detects that the header body 25 is at a preset height (e.g., 3cm) from the bottom of the wheat ear, the electric push rod 11 stops moving, and the cutting motor 29 immediately starts, driving the cutter 27 to reciprocate rapidly. The second blade 35 cooperates with the first blade 31 to neatly cut the wheat stalks. After cutting, the electric push rod 11 retracts, lifting the motion component 8 and the clamped wheat ear. Immediately afterwards, the turntable motor 13 drives the turntable 12 to rotate approximately 105 degrees, causing the header 9 holding the wheat ear and the clamping arm 14 to turn backward until the wheat ear guide plate 32 is directly above the main conveyor belt 38. At this time, the bracket moving motor 16 reverses, driving the clamping arm 14 to release, and the wheat ear falls smoothly into the main conveyor belt 38 under the guidance of gravity and the wheat ear guide plate 32. After being conveyed by the main conveyor belt 38, the wheat ear slides down to the secondary conveyor belt 39 and is finally conveyed to the ear outlet 49, falling into a pre-tied net bag or directly into the wheat storage box 4. After the harvest is completed, the turntable motor 13 drives the turntable 12 to reverse and reset, the electric push rod 11 extends to lower and reset the motion component 8, and the machine moves to the next row to start a new harvest cycle.

[0060] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] It should be noted that the components mentioned in the above embodiments are all general standard parts or components known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0062] This invention has illustrated its principles and implementation methods using specific examples. The descriptions of these embodiments are merely illustrative of the method and its core ideas; furthermore, those skilled in the art will recognize that modifications may be made to the specific implementation methods and application scope based on the principles of this invention. Therefore, the content of this specification should not be construed as limiting the invention.

Claims

1. A spaced wheat cutter, characterised in that, The utility model relates to a wheat cutting machine, which comprises: a machine body (5) provided with walking wheels (46) at the bottom front and back for serving as a load-bearing base of the whole machine; a cutting assembly (1) installed in the middle of the machine body (5) for row-by-row, righting, clamping and cutting wheat plants; a conveying assembly (2) arranged behind the cutting assembly (1) and extending through the machine body (5) for receiving and conveying wheat spikes cut by the cutting assembly (1); a wheat storage box (4) arranged at the tail of the machine body (5) for collecting the wheat spikes conveyed by the conveying assembly (2); a power assembly (3) arranged at the front of the machine body (5) for providing power for the cutting assembly (1), the conveying assembly (2) and the walking wheels (46).

2. A spaced wheat cutting machine according to claim 1, characterised in that, The cutting assembly (1) comprises: motion guide rails (6) fixed symmetrically on both sides of the machine body (5); a push rod fixing frame (7) fixed on the top of the motion guide rails (6); a motion assembly (8) comprising a motion sliding block (10), an electric push rod (11), a rotating disc (12), a rotating disc motor (13), a clamping arm (14), a clamping arm support (15), a support moving motor (16), a cutter rotating motor (17) and a first rotating gear (18), wherein the motion sliding block (10) is slidably installed in the motion guide rails (6), the electric push rod (11) is fixedly installed in the push rod fixing frame (7), the output end of the electric push rod (11) is connected with the upper end of the motion sliding block (10), one side of the motion sliding block (10) is provided with a rotating disc mounting groove (19), the rotating disc (12) is installed in the rotating disc mounting groove (19) and is provided with a cutter support (23) thereon, the rotating disc motor (13) is fixedly installed on the outer wall of the motion sliding block (10), the output shaft of the rotating disc motor (13) is in transmission connection with the rotating disc (12), the rotating disc (12) is provided with a first guide rail (20) and a support motor groove (21), the lower part of the clamping arm support (15) is provided with a second guide rail (22), the clamping arm support (15) is slidably installed on the first guide rail (20) through the second guide rail (22), the center of the second guide rail (22) is provided with a threaded hole, the output shaft of the support moving motor (16) is provided with a thread, the clamping arm support (15) is connected with the support moving motor (16) through the thread, the clamping arm (14) is rotatably installed on the clamping arm support (15) and is provided with a linkage shaft (24) on the inner side, the support moving motor (16) is fixedly installed in the support motor groove (21), the cutter rotating motor (17) is fixedly installed on the rotating disc (12), and the first rotating gear (18) is installed on the output shaft of the cutter rotating motor (17). The cutting platform (9) comprises a cutting platform body (25), a distance sensor (26), a cutter (27), a cutting drive gear (28) and a cutting motor (29), the cutting platform body (25) is rotatably mounted on the cutting platform support (23), the inside of the cutting platform body (25) is provided with a cutting guide rail (30), the lower end of the cutting platform body (25) is provided with a first cutter tooth (31), the two ends of the first cutter tooth (31) are provided with limiters (50), the upper end of the first cutter tooth (31) is provided with a wheat spike flow guide plate (32), the left end of the first cutter tooth (31) is provided with a second rotating gear (33), the second rotating gear (33) is engaged with the first rotating gear (18), the distance sensor (26) is fixedly mounted on the upper end of the cutting platform body (25), the cutter (27) is provided with a cutter guide rail (34) and a second cutter tooth (35), the second cutter tooth (35) is engaged with the first cutter tooth (31), the cutter guide rail (34) is slidably mounted on the cutting guide rail (30), the upper end of the cutter guide rail (34) is provided with a cutting drive rack (36), the cutting motor (29) is fixedly mounted on the outside of the cutting platform body (25), the cutting drive gear (28) is mounted on the output shaft of the cutting motor (29) and is engaged with the cutting drive rack (36), the left end of the cutting platform body (25) is provided with a linkage shaft through hole (37), the linkage shaft (24) passes through the linkage shaft through hole (37) and is slidably connected with the linkage shaft through hole (37).

3. A spaced wheat cutting machine according to claim 2, characterised in that, The cross section of the motion guide rail (6) and the motion sliding block (10) is plum blossom shape, and the surface is coated with a polytetrafluoroethylene wear-resistant layer.

4. A spaced wheat cutting machine according to claim 2, characterised in that, The cross section of the first guide rail (20) and the second guide rail (22) is swallowtail shape, and the surface is coated with a polytetrafluoroethylene wear-resistant layer.

5. A spaced wheat cutting machine according to claim 2, characterised in that, The cross section of the cutting guide rail (30) and the cutter guide rail (34) is swallowtail shape, and the surface is coated with a polytetrafluoroethylene wear-resistant layer, and the contact surface of the first cutter tooth (31) and the second cutter tooth (35) is coated with a polytetrafluoroethylene wear-resistant layer.

6. A spaced wheat cutting machine according to claim 2, characterised in that, The interval between the inner side of the clamping arm (14) and the inner side of the cutting platform body (25) is 2-100mm.

7. A spaced wheat cutter as claimed in claim 1 wherein, The conveying assembly (2) is a two-stage conveying structure, comprising: A main conveying belt (38) is arranged behind the cutting assembly (1) and used for receiving and preliminarily conveying wheat spikes; A sub-conveying belt (39) is arranged below and behind the main conveying belt (38) and used for receiving wheat spikes from the main conveying belt (38) and conveying the wheat spikes to the wheat storage box (4) or the spike outlet (49); A main driving device (40) is used for driving the main conveying belt (38) to operate through a transmission belt (41); A belt protection cover (42) is fixedly mounted on the left end of the machine body (5).

8. A spaced wheat cutting machine according to claim 7, characterised in that, The machine body (5) is provided with a first baffle (47) above the main conveying belt (38), and the upper end of the sub-conveying belt (39) is provided with a second baffle (48) for preventing wheat spikes from splashing.

9. A spaced wheat cutting machine according to claim 7, characterised in that, The lower end of the outlet spout (49) is provided with a square protrusion (51) for fixing a collecting bag, and a receiving plate (52) is arranged below the outlet spout (49) for receiving the collecting bag.

10. A spaced wheat cutter according to claim 1 wherein, The power assembly (3) comprises: An engine (43) fixedly installed at the front end of the machine body (5); An upper cover (44) rotatably installed at the top of the front end of the machine body (5); A control end (45), and the engine (43) and the control end (44) are both installed in the groove at the front end of the machine body (5) and are protected by the upper cover (44) outside.

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