A combine header

Abstract

The application provides a combine harvester header, and relates to the technical field of harvester headers. The combine harvester header comprises a header frame, a sweeping device, an adjusting cylinder, a cutting device, a divider and a conveying auger arranged in the header frame. In order to adapt to the smooth feeding of high-stalk crops, downed crops or semi-downed crops, triangular baffles are arranged at two corners of the top of the header frame, the inner side of the triangular baffles is provided with an inclined edge, one end of the inclined edge extends to the side of the adjusting cylinder facing the sweeping device, one end of a straight pipe at the top of the inner side of the divider in front of the header frame extends to the side of the adjusting cylinder away from the sweeping device, so as to forcibly make the ear part of the crops entering the divider to be tilted inward, and the sharp of the divider on the side of the transmission mechanism is pointed outward, so as to avoid the uncut crops on the outer side of the divider being dragged and crushed by the transmission mechanism to cause the loss of the header.

Description

Technical Field

[0001] This application relates to the field of harvester header technology, and more specifically, to a combine harvester header. Background Technology

[0002] In recent years, with the popularization of high-yield rice and hybrid rice, rice yields have been continuously increasing, but so has the height of the stalks. Rice stalks naturally exceeding 1.2 meters in height are now common, leading to more lodging and partial lodging. This poses a challenge to the structure of existing harvesting platforms. When harvesting partially lodged rice, the rice pushed in by the reel does not follow the same neat and vertical guidance to the conveyor auger as upright rice. In fact, the rice on both sides of the harvesting platform may even tilt outwards, easily getting stuck or blocked in the gaps between the reel and the side plates of the platform, causing the reel to become entangled. When harvesting fully lodged rice, because a low stubble is required, the transmission mechanism, due to its width and low position, can easily drag or crush the rice adhering to the outside of the divider, resulting in severe harvesting platform damage.

[0003] In addition, in existing technologies, the reeling teeth are mostly made of elastic materials (such as spring steel) and installed on the reel. They use their own deformation to buffer the contact impact and reduce damage to the crop.

[0004] However, if the entire rake tooth is made of elastic material, its deformation range and deformation position cannot be fixed. In actual use, the effect of lifting up fallen crops is not ideal. For example, the amount of moisture content of the fallen crops (weight change) will affect the deformation range of the elastic material rake tooth. When the weight of the fallen crops is small, the deformation of the rake tooth is small, and the effect of lifting the crops is better. However, when the weight of the fallen crops is large, the deformation of the rake tooth is large, and the effect of lifting the crops will decrease, affecting the harvesting effect of the header. Summary of the Invention

[0005] This application aims to at least solve one of the technical problems existing in the prior art. To this end, this application proposes a combine harvester header, installed on a combine harvester, including a frame. A cutting device is arranged along the width direction of the frame. A crop-pulling device and a conveying auger are arranged inside the frame. Crops dividers are arranged on both sides of the frame. Triangular baffles are respectively arranged at two corners of the top of the frame for guiding the crop. The crop-pulling device includes multiple discs, with a main shaft arranged at the center of each disc. Multiple crop-pulling rods are evenly arranged around the circumference of each disc. The tip of the crop divider located on the transmission device side is inclined outwards. The distance between the tips of two crop dividers is greater than the width of the frame. One end of the crop divider extending onto the frame extends to the triangular baffle. Multiple crop-pulling teeth are evenly arranged on the crop-pulling rods. Each crop-pulling tooth includes a toothed rod, a hinge, a fixing member, a limiting member, and an adjusting member. The toothed rod is detachably fixed to the hinge, and the toothed rod is located away from the hinge. One end of the hinge is curved. The hinge is detachably fixed to the fixing member. The fixing member passes through and is detachably mounted on the reel. The limiting member is detachably fixedly sleeved on the reel. The limiting member includes a fixing ring detachably fixedly sleeved on the reel. A connecting block is fixedly connected to one side of the fixing ring. A limiting rod is slidably inserted into the connecting block. A limiting pad is fixedly connected to the bottom end of the limiting rod. The limiting pad and the toothed rod are compatible. The hinge can rotate towards the limiting pad. An adjusting rod is fixedly connected to one end of the multiple limiting rods away from the limiting pad. The adjusting rod passes through the centrally located wheel. The adjusting member is rotatably connected to the centrally located wheel and threadedly connected to the adjusting rod. The adjusting member drives the adjusting rod to move radially along the wheel by rotating itself, thereby causing all the limiting rods on the same reel to move synchronously, thus changing the rotation amplitude of the hinge.

[0006] Preferably, the two sides of the platform are symmetrically hinged with adjusting cylinders and brackets, wherein one end of the adjusting cylinder is hinged to the bracket, and the reeling device is rotatably disposed between the two brackets.

[0007] Preferably, the divider is composed of multiple straight rigid tubes, wherein one end of the straight rigid tube located at the top inner side extends to the side of the adjusting cylinder away from the reeling device, and one end of the straight rigid tube located at the bottom extends to the side of the conveying auger away from the reeling device. After the divider on the side with the transmission mechanism is installed, its dividing tip is turned outward by 6-10cm, so that the distance between the two dividers is 6-20cm wider than the platform.

[0008] Preferably, triangular baffles are provided at the two corners of the top of the frame, with the inward-facing side of the triangular baffles being inclined, and one end of the triangular baffles extending to the side of the adjusting cylinder facing the reeling device, specifically, this end extends more than 5cm beyond the adjusting cylinder.

[0009] Preferably, the rack includes a straight rod portion and a curved portion, the curved portion being bent toward one side of the platform, and a screw portion being coaxially fixed to one end of the straight rod portion away from the curved portion.

[0010] Preferably, the hinge includes an upper connecting shaft and a lower connecting shaft that are rotatably connected. The top end of the upper connecting shaft is coaxially fixed with an upper threaded rod, and the bottom end of the lower connecting shaft is coaxially provided with a lower threaded hole. The lower threaded hole and the screw part are threadedly engaged. A rotating shaft is provided between the two supports of the lower connecting shaft. The rotating shaft and the upper connecting shaft are rotatably connected. Two torsion springs are symmetrically arranged on the rotating shaft. The two ends of the torsion springs are fixed to the upper connecting shaft and the lower connecting shaft, respectively. One of the supports on the upper connecting shaft is longer than the other support and abuts against the lower connecting shaft. When the long support on the upper connecting shaft abuts against the lower connecting shaft, the hinge is at 180°, and the long support is a limiting end.

[0011] Preferably, the fixing member includes a fixing bolt that passes through the pulling rod, one end of the fixing bolt is threaded with a fixing nut, and the other end is also coaxially provided with a connecting threaded hole that is compatible with the upper threaded rod.

[0012] Preferably, the connecting block is provided with a limiting hole, and a support cylinder is fixedly connected to the downward side of the connecting block. The support cylinder and the limiting hole are coaxial. The side wall of the limiting rod is provided with a limiting groove along the axial direction. The limiting groove and the limiting hole are adapted to each other.

[0013] Preferably, the limiting rod is slidably inserted into the support cylinder.

[0014] Preferably, the adjusting component includes an adjusting screw that passes through the centrally located wheel, the adjusting screw and the adjusting rod being threadedly connected, a fixing plate being provided at one end of the adjusting screw extending to the other side of the adjusting rod, the fixing plate being fixedly connected to the wheel, the adjusting screw passing through the fixing plate and being threadedly connected to a limit bolt, and a pad being fitted at one end of the adjusting screw extending to the outer side of the wheel.

[0015] The beneficial effects of this invention are: The hinge allows the toothed rod to undergo elastic angular changes on the fixed part, enabling the toothed rod to deform elastically. This facilitates elastic support for lodged crops and avoids rigid contact between the toothed rod and the crop, which could cause crop drop or damage. By using limiting components, the angle change of the toothed rod is restricted, that is, the range of the elastic deformation angle of the toothed rod is limited. This prevents the toothed rod from being unable to lift the lodged crop when the force exerted by the crop on the toothed rod is greater than the force of its elastic deformation, thus affecting the normal harvesting of the crop. By adjusting the position of the limiting pad, the angle of the toothed rod can be adjusted. When the angle range is larger, the return spring force will be larger, and when the angle range is smaller, the return spring force will be smaller. This makes the toothed rod suitable for supporting different crops and avoids hitting the crops due to excessive return spring force, thereby reducing the occurrence of crop drop and damage. By extending one end of the straight rigid tube on the inner top of the left and right dividers in front of the frame to the side of the adjusting cylinder away from the splitting device, the crop ears that are close to the dividers are forced to tilt inward, and the tip of the divider located on the side of the transmission mechanism is turned outward, so as to avoid the uncut crops on the outside of the dividers being dragged and crushed by the transmission mechanism, causing damage to the header.

[0016] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of a combine harvester header according to an embodiment of this application; Figure 2 This is a partial structural cross-sectional view of a combine harvester header according to an embodiment of this application; Figure 3 This is a simplified schematic diagram illustrating the distance relationship between partial structures of a combine harvester header according to an embodiment of this application; Figure 4 This is a schematic diagram of the structure of the reeling device according to an embodiment of this application; Figure 5 This is a schematic diagram of the structure of the grain-reeling tooth according to an embodiment of this application; Figure 6 The structural explosion of the reel tooth according to the embodiment of this application. Figure 1 ; Figure 7 The structural explosion of the reel tooth according to the embodiment of this application. Figure 2 ; Figure 8 This is an exploded view of the structure of the hinge according to an embodiment of this application; Figure 9 According to the embodiments of this application Figure 3 Enlarged diagram of A in the middle; Figure 10 This is a schematic diagram showing the position of the miniature adhesive attachment according to an embodiment of this application; Figure 11 This is a schematic diagram of the structure of a miniature adhesive attachment according to an embodiment of this application; Figure 12 This is a structural cross-sectional view of a miniature adhesive attachment according to an embodiment of this application; Figure 13 According to the embodiments of this application Figure 4 Enlarged diagram of B in the diagram.

[0019] Icons: 1. Frame; 11. Cutting device; 12. Adjusting cylinder; 13. Support; 2. Reeling device; 21. Wheel; 22. Main shaft; 23. Reeling rod; 3. Conveying auger; 4. Divider; 5. Reeling teeth; 51. Tooth bar; 511. Straight rod section; 512. Bent section; 513. Screw section; 52. Hinge; 521. Upper connecting shaft; 522. Lower connecting shaft; 523. Upper threaded rod; 524. Lower threaded hole; 525. Rotating shaft; 526. Torsion spring; 527. Limiting end; 53. Fixing component; 531. Fixing bolt; 532. Fixing Nut; 533, Connecting threaded hole; 54, Limiting component; 541, Retaining ring; 542, Connecting block; 543, Limiting rod; 544, Limiting pad; 545, Adjusting rod; 546, Limiting hole; 547, Support cylinder; 548, Limiting groove; 55, Adjusting component; 551, Adjusting screw; 552, Fixing plate; 553, Limiting bolt; 554, Pad; 6, Miniature adhesive attachment; 61, Outer support part; 62, Inner fixing part; 63, Top beveled part; 64, Top arc strip; 7, Buffer component; 71, Lower washer ring; 72, Spring; 73, Upper washer ring. Detailed Implementation

[0020] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] Example 1, as Figures 1-9 As shown, a combine harvester header according to an embodiment of this application includes a frame 1, a cutting device 11 is provided on the frame 1 along the width direction, a seeding device 2 and a conveying auger 3 are provided inside the frame 1, and seed dividers 4 are provided on both sides of the frame 1. It should be noted that the conveying auger 3 is prior art and will not be described in detail here.

[0023] Among them, such as Figure 2 As shown, the two sides of the frame 1 are symmetrically hinged with an adjusting cylinder 12 and a bracket 13, with one end of the adjusting cylinder 12 hinged to the bracket 13. The rice-picking device 2 is rotatably set between the two brackets 13. It can be seen that the angle of the bracket 13 on the frame 1 can be changed by adjusting the extension and retraction of the adjusting cylinder 12, thereby realizing the height adjustment of the rice-picking device 2.

[0024] Furthermore, the divider 4 is composed of multiple straight rigid tubes, one end of which is located at the top inner side and extends to the side of the adjusting cylinder 12 away from the reeling device 2, and one end of which is located at the bottom and extends to the side of the conveying auger 3 away from the reeling device 2. After the divider 4 on the side with the transmission mechanism (a series of structures such as sprockets on the cutter table for transmitting power to the reeling device 2) is installed, its dividing tip is turned outward by 6-10cm, so that the distance H2 between the two dividers 4 is 6-20cm wider than the width H1 of the frame 1.

[0025] It is understandable that, in actual use, the tip of the divider 4 is flared outwards to prevent uncut crops on the outside of the divider 4 from being dragged and crushed by the transmission mechanism, causing damage to the header.

[0026] Furthermore, triangular baffles are respectively installed at the two corners of the top of the frame 1. The inward side of the triangular baffle is set with a slant, and one end of the triangular baffle extends to the side of the adjusting cylinder 12 facing the reeling device 2. Specifically, this end extends 5 cm or more beyond the adjusting cylinder.

[0027] It is understandable that, in practical use, the triangular baffle can force the crop ears that are close to the divider 4 to tilt inward.

[0028] This design solves the technical problem of easy entanglement on both sides of the reel when harvesting lodged or semi-lodged tall crops of 1.2 meters or more in the existing technology. At the same time, the installation angle of the divider 4 is adjusted to solve the problem that the width of the transmission mechanism is easy to drag or crush the unharvested rice in the low stubble harvest.

[0029] Furthermore, such as Figure 4 As shown, the rice-picking device 2 includes multiple discs 21, a main shaft 22 is provided at the center of the multiple discs 21, multiple rice-picking rods 23 are evenly arranged around the multiple discs 21, and multiple rice-picking teeth 5 are evenly arranged on the rice-picking rods 23.

[0030] Among them, such as Figures 5-8 As shown, the reeling tooth 5 includes a toothed rod 51, a hinge 52, a fixing member 53, a limiting member 54, and an adjusting member 55. The toothed rod 51 is detachably fixed to the hinge 52, and the end of the toothed rod 51 away from the hinge 52 is curved. The hinge 52 is detachably fixed to the fixing member 53. The fixing member 53 passes through and is detachably mounted on the reeling rod 23. The limiting member 54 is detachably and fixedly sleeved on the reeling rod 23. The limiting member 54 includes a fixing ring 541 detachably and fixedly sleeved on the reeling rod 23. A connecting block 542 is fixedly connected to one side of the fixing ring 541. Specifically, there are two fixing rings 541, which are fixed together by the connecting block 542. The other side of the fixing ring 541 is open and can be locked with bolts. On the reeling rod 23, a limiting rod 543 is slidably inserted into the connecting block 542. The bottom end of the limiting rod 543 is fixedly connected to a limiting pad 544. The limiting pad 544 is adapted to the toothed rod 51 and is used to limit the rotation amplitude of the toothed rod 51. The hinge 52 can rotate on the side facing the limiting pad 544. An adjusting rod 545 is fixedly connected to the end of the multiple limiting rods 543 away from the limiting pad 544. The adjusting rod 545 passes through the centrally located wheel 21. The adjusting member 55 is rotatably connected to the centrally located wheel 21 and threadedly connected to the adjusting rod 545. The adjusting member 55 drives the adjusting rod 545 to move radially along the wheel 21 by rotating itself, thereby driving all the limiting rods 543 on the same reeling rod 23 to move synchronously, so as to change the rotation amplitude of the hinge 52.

[0031] Specifically, the rack 51 includes a straight rod portion 511 and a bent portion 512, which are fixedly connected. The bent portion 512 is bent toward one side of the stand 1, and a screw portion 513 is coaxially fixed to one end of the straight rod portion 511 away from the bent portion 512.

[0032] It should be noted that the design of the curved part 512 at the bottom of the toothed rod 51 allows the toothed rod 51 to form a larger contact area and a wrapping feel on the curved surface of the crop stem during the process of lifting lodged crops. This enhances the friction on the stem and prevents the crop from slipping and falling off due to machine vibration and changes in crop density during the lifting process. Due to its curved direction, it generates an "inward clamping" force during the lifting process, firmly confining the crop within the lifting area and preventing it from deviating from the conveying path. At the same time, due to the design of the curved part 512, it can also gradually apply force to the crop surface through the curved surface, effectively reducing damage to the stem and reducing the impact on the crop grains.

[0033] In a specific embodiment of this application, the hinge 52 includes an upper connecting shaft 521 and a lower connecting shaft 522 that are rotatably connected. An upper threaded rod 523 is coaxially fixed to the top end of the upper connecting shaft 521, and a lower threaded hole 524 is coaxially provided at the bottom end of the lower connecting shaft 522. The lower threaded hole 524 and the screw part 513 are threadedly engaged. A rotating shaft 525 is provided between the two supports of the lower connecting shaft 522. The rotating shaft 525 and the upper connecting shaft 521 are rotatably connected. Two torsion springs 526 are symmetrically provided on the rotating shaft 525. The two ends of the torsion springs 526 are fixed to the upper connecting shaft 521 and the lower connecting shaft 522, respectively. One of the supports on the upper connecting shaft 521 is longer than the other support and abuts against the lower connecting shaft 522. When the long support on the upper connecting shaft 521 abuts against the lower connecting shaft 522, the hinge 52 is at 180°, and the long support is the limiting end 527.

[0034] It can be seen that the lower connecting shaft 522 and the upper connecting shaft 521 are elastically rotatably connected by two torsion springs 526. Under the restriction of the rotation direction and angle of the limiting end 527, the lower connecting shaft 522 can only rotate to the side of the limiting member 54, so as to prevent the toothed rod 51 from deforming in the opposite direction during the process of inserting into the crop, and to enhance the supporting effect of the toothed rod 51 on the crop.

[0035] The fixing component 53 includes a fixing bolt 531 that passes through the reeling rod 23. One end of the fixing bolt 531 is threadedly connected to a fixing nut 532, and the end is also coaxially provided with a connecting threaded hole 533 that is compatible with the upper threaded rod 523.

[0036] Therefore, in this application, the fixing bolt 531 can be quickly installed and removed from the reeling bar 23. At the same time, the toothed bar 51, the hinge 52 and the fixing bolt 531 can also be quickly installed and removed. Thus, by replacing different reeling teeth 5, the applicability of the header of this application can be enhanced, and the maintenance of the reeling teeth 5 can be facilitated, thereby reducing the maintenance cost of the equipment.

[0037] In a specific embodiment of this application, a limiting hole 546 is provided on the connecting block 542, and a support cylinder 547 is fixedly connected to the downward side of the connecting block 542. The support cylinder 547 and the limiting hole 546 are coaxial. A limiting groove 548 is provided along the axial direction on the side wall of the limiting rod 543. The limiting groove 548 and the limiting hole 546 are adapted to limit the rotation of the limiting rod 543 in the limiting hole 546.

[0038] It should be noted that the limiting rod 543 is slidably inserted into the support cylinder 547, and the support cylinder 547 enhances the support strength of the limiting rod 543 on the connecting block 542.

[0039] It should be further explained that the adjusting component 55 includes an adjusting screw 551 that passes through the centrally located wheel 21. The adjusting screw 551 and the adjusting rod 545 are threadedly connected. A fixing plate 552 is provided at one end of the adjusting screw 551 extending to the other side of the adjusting rod 545. The fixing plate 552 is fixed to the wheel 21. The adjusting screw 551 passes through the fixing plate 552 and is threadedly connected to a limit bolt 553. A pad 554 is fitted at one end of the adjusting screw 551 extending to the outside of the wheel 21.

[0040] It should be noted that the limiting bolt 553 and the fixing plate 552 are rotatably connected, and the adjusting screw 551 and the pad 554 are rotatably connected. Thus, by the axial displacement of the limiting bolt 553 on the adjusting screw 551, the adjusting screw 551 can be fixed on the wheel 21. By rotating the adjusting screw 551, the adjusting rod 545 can be displaced along the axial direction of the adjusting screw 551. This will cause all the limiting rods 543 on the same reel 23 to move synchronously and in the same direction, that is, to synchronously change the position of multiple limiting pads 544, thereby realizing the change of the angle range of multiple toothed rods 51.

[0041] In practical use, the height of the limiting pad 544 relative to the toothed rod 51 is adjusted according to different crops or different moisture contents and grain yields of the same crop, so that the toothed rod 51 can elastically deform within a limited range. During the harvesting process, the rotation of the wheel 21 drives the multiple reeling rods 23 on it to rotate, so that the toothed rods 51 on the reeling rods 23 are inserted into the crop one by one. The toothed rods 51 and the reeling rods 23 are used to straighten the crop and transport it to the cutting device 11, where it is cut. The reeling rods 23 push the cut crop towards the conveying auger 3, which then transports the crop to the subsequent working parts. During this process, the limited elastic deformation of the toothed rod 51 prevents it from deforming in the opposite direction when it is inserted into the fallen crop, ensuring that the toothed rod 51 can be smoothly inserted into the fallen crop. As the wheel 21 rotates, the toothed rod 51 with its limited rotation angle and elastic deformation ability can perform a flexible straightening action on the crop, ensuring the straightening effect while reducing the impact on the crop and the grains on it.

[0042] In related technologies, although the toothed rod 51 of the header of a combine harvester adopts an arc-shaped design, which can improve the effect of lifting the crop to a certain extent, as the usage time increases, the surface of the toothed rod 51 will gradually become smooth due to friction. Thus, when dealing with different crops, especially crops with smooth stems, the efficiency of the smooth-surfaced toothed rod 51 in the process of straightening the crop will decrease, affecting the normal harvesting effect of the crop.

[0043] Example 2, according to some embodiments of this application, such as Figures 10-12As shown, a plurality of miniature adhesive attachments 6 are evenly arranged on the side of the toothed rod 51 facing the frame 1. The plurality of miniature adhesive attachments 6 are respectively fixed to one end of the straight rod 511 near the bent part 512 and to the bent part 512.

[0044] It should be noted that the micro-adhesive attachment 6 is designed to be located on the side of the entire toothed rod 51 facing the cutting device 11, and there is no micro-adhesive attachment 6 between two adjacent toothed rods 51. In this way, the friction effect during the contact between the toothed rod 51 and the crop stem is increased, while the phenomenon of entanglement between the crop and the toothed rod 51 is reduced.

[0045] Specifically, the miniature adhesive attachment 6 includes an outer support portion 61, an inner fixing portion 62, and two symmetrically arranged beveled portions 63 at the top. The outer support portion 61 has an inclined arc surface and gradually moves away from the side wall of the toothed rod 51 from the bottom to the top. The inner fixing portion 62 is fixed to the side wall of the toothed rod 51. The beveled portions 63 are located at the top of the outer support portion 61 and the inner fixing portion 62. The side of the two symmetrically arranged beveled portions 63 that are far apart from each other is lower than the side that is connected to each other, and the side of the beveled portion 63 facing the inner fixing portion 62 is higher than the side facing the outer support portion 61.

[0046] Furthermore, multiple top arc-shaped strips 64 are provided on the two symmetrical top inclined surfaces 63. The multiple top arc-shaped strips 64 are evenly distributed from the side of the top inclined surface 63 near the tooth bar 51 to the side away from the tooth bar 51. The top of the top arc-shaped strips 64 is set with the same inclination angle as the two top inclined surfaces 63. The length of the multiple top arc-shaped strips 64 gradually increases outward from the tooth bar 51 side. The arc shape of the top arc-shaped strips 64 is consistent with the arc shape of the outer support part 61.

[0047] Therefore, it can be understood that, Figure 10 and Figure 11As shown, the micro-adhesive attachment 6, with its top-large and bottom-small design that gradually tapers from top to bottom, prevents the toothed rod 51 from interfering with the crop during insertion. During support, the micro-adhesive attachment 6 enhances the friction between the toothed rod 51 and the crop, improving crop straightening. Simultaneously, the symmetrical beveled portion 63 at the top of the micro-adhesive attachment 6, with its central protrusion and downward-sloping ends, and its downward inclination from the inner to the outer sides, strengthens the overall friction between the toothed rod 51 and the crop, while simultaneously reducing friction on the crop against individual micro-adhesive attachments 6. This allows the crop to gradually contact the micro-adhesive attachments 6 from the top to the bottom, preventing excessive friction between any single micro-adhesive attachment 6 from directly straightening the crop and causing stem damage or ear drop. Furthermore, the design of multiple curved strips 64 at the top prevents the beveled portion 63 from becoming smooth, thus avoiding loss of friction with the crop and also preventing weakening of the toothed rod 51 itself.

[0048] In related technologies, the header of a combine harvester inevitably contains hard objects such as stones in the soil during the harvesting process. Although the toothed rod 51 has a certain range of elastic deformation capability, if the presence of hard objects causes the toothed rod 51 to deform beyond the range after contact, it will cause damage to the toothed rod 51.

[0049] Example 3, according to some embodiments of this application, such as Figure 13 As shown, a buffer 7 is fitted at one end of the fixing bolt 531 extending to the bottom side of the reeling rod 23. The buffer 7 enables the reeling tooth 5 to have elastic deformation in the axial direction.

[0050] The buffer 7 includes a lower pad ring 71 and an upper pad ring 73 arranged symmetrically, with a spring 72 abutting between the lower pad ring 71 and the upper pad ring 73.

[0051] Specifically, the lower washer 71, spring 72 and upper washer 73 are respectively sleeved on the fixing bolt 531, wherein the lower washer 71 abuts against the fixing nut 532 and the upper washer 73 abuts against the reeling rod 23.

[0052] Therefore, in practical use, even if the toothed rod 51 comes into contact with a hard object that may cause it to deform beyond its range, the compression deformation of the spring 72 will cause the toothed rod 51, the hinge 52, and the fixing bolt 531 to displace along the axial direction of the fixing bolt 531, thus controlling the deformation within the rotation range of the hinge 52. This ensures that the toothed rod 51 is less likely to be damaged. Compared with the design of using elastic materials in the prior art, this design not only reduces the risk of damage to the toothed rod 51, but also ensures that it will not deform in the opposite direction when inserted into the crop, thus ensuring the effect of supporting the crop.

[0053] It should be noted that the specific models and specifications of the frame 1, cutting device 11, adjusting cylinder 12, wheel 21, conveying auger 3, torsion spring 526 and spring 72 need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0054] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A header for a combine harvester, mounted on a combine harvester, comprising a frame (1), wherein a cutting device (11) is provided along the width direction of the frame (1), a seeding device (2) and a conveying auger (3) are provided inside the frame (1), and seed dividers (4) are provided on both sides of the frame (1), characterized in that: The two corners of the top of the platform (1) are respectively provided with triangular baffles, which are used to guide the crops; The rice-picking device (2) includes multiple wheel discs (21), a main shaft (22) is provided at the center of the multiple wheel discs (21), and multiple rice-picking rods (23) are evenly arranged around the multiple wheel discs (21). The tip of the divider (4) located on one side of the transmission device is tilted outward, the distance between the tips of the two dividers (4) is greater than the width of the frame (1), and one end of the divider (4) extending onto the frame (1) extends to the triangular baffle. The stalk (23) is evenly provided with multiple stalk teeth (5); The reeling tooth (5) includes a toothed rod (51), a hinge (52), a fixing member (53), a limiting member (54), and an adjusting member (55). The toothed rod (51) is detachably fixed to the hinge (52). The end of the toothed rod (51) away from the hinge (52) is curved. The hinge (52) is detachably fixed to the fixing member (53). The fixing member (53) passes through and is detachably disposed on the reeling rod (23). The limiting member (54) is detachably fixedly sleeved on the reeling rod (23). The limiting member (54) includes a fixing ring (541) that is detachably and fixedly sleeved on the reeling rod (23). A connecting block (542) is fixedly connected to one side of the fixing ring (541). A limiting rod (543) is slidably inserted into the connecting block (542). A limiting pad (544) is fixedly connected to the bottom end of the limiting rod (543). The limiting pad (544) is adapted to the toothed rod (51). The hinge (52) is rotatable on the side facing the limiting pad (544); An adjusting rod (545) is fixed to one end of each of the limiting rods (543) away from the limiting pad (544). The adjusting rod (545) passes through the centrally located wheel (21); The adjusting member (55) is rotatably connected to the centrally located wheel (21) and threadedly connected to the adjusting rod (545). The adjusting member (55) drives the adjusting rod (545) to move radially along the wheel (21) by rotating itself, thereby causing all the limiting rods (543) on the same reel (23) to move synchronously, so as to change the rotation amplitude of the hinge (52).

2. The header of a combine harvester as described in claim 1, characterized in that, The two sides of the platform (1) are symmetrically hinged with an adjusting cylinder (12) and a bracket (13), wherein one end of the adjusting cylinder (12) is hinged to the bracket (13), and the hoe-pulling device (2) is rotatably disposed between the two brackets (13).

3. The header of a combine harvester as described in claim 2, characterized in that, The divider (4) is composed of multiple straight rigid tubes, one end of which is located at the top inner side and extends to the side of the adjusting cylinder (12) away from the reeling device (2). The distance between the two sets of dividers (4) is 10-20 cm wider than the frame (1).

4. The header of a combine harvester as described in claim 2, characterized in that, The triangular baffle is set with an inward side at an angle, and one end of the triangular baffle extends to the side of the adjusting cylinder (12) facing the reeling device (2).

5. The header of a combine harvester as described in claim 1, characterized in that, The rack (51) includes a straight rod portion (511) and a bent portion (512) fixedly connected. The bent portion (512) bends toward one side of the platform (1). A screw portion (513) is coaxially fixed to one end of the straight rod portion (511) away from the bent portion (512).

6. The header of a combine harvester as described in claim 5, characterized in that, The hinge (52) includes an upper connecting shaft (521) and a lower connecting shaft (522) that are rotatably connected. An upper threaded rod (523) is coaxially fixed to the top end of the upper connecting shaft (521). A lower threaded hole (524) is coaxially provided at the bottom end of the lower connecting shaft (522). The lower threaded hole (524) and the screw part (513) are threaded together. A rotating shaft (525) is provided between the two supports of the lower connecting shaft (522). The rotating shaft (525) is rotatably connected to the upper connecting shaft (521). Two torsion springs (526) are symmetrically arranged on the shaft (525). The two ends of the torsion springs (526) are fixed to the upper connecting shaft (521) and the lower connecting shaft (522) respectively. One of the supports on the upper connecting shaft (521) is longer than the other support and abuts against the lower connecting shaft (522). When the long support on the upper connecting shaft (521) abuts against the lower connecting shaft (522), the hinge (52) is at 180° and the long support is the limiting end (527).

7. A combine harvester header as described in claim 6, characterized in that, The fixing member (53) includes a fixing bolt (531) that passes through the hoe (23). One end of the fixing bolt (531) is threaded with a fixing nut (532), and the end is also coaxially provided with a connecting thread hole (533) that is compatible with the upper threaded rod (523).

8. The header of a combine harvester as described in claim 1, characterized in that, The connecting block (542) is provided with a limiting hole (546), and a support cylinder (547) is fixedly connected to the downward side of the connecting block (542). The support cylinder (547) and the limiting hole (546) are coaxial. The side wall of the limiting rod (543) is provided with a limiting groove (548) along the axial direction. The limiting groove (548) and the limiting hole (546) are compatible.

9. A combine harvester header as described in claim 8, characterized in that, The limiting rod (543) is slidably inserted into the support cylinder (547).

10. The header of a combine harvester as described in claim 1, characterized in that, The adjusting component (55) includes an adjusting screw (551) that passes through the centrally located wheel (21). The adjusting screw (551) and the adjusting rod (545) are threaded together. A fixing plate (552) is provided at one end of the adjusting screw (551) extending to the other side of the adjusting rod (545). The fixing plate (552) is fixed to the wheel (21). The adjusting screw (551) passes through the fixing plate (552) and is threaded together with a limit bolt (553). A pad (554) is fitted at one end of the adjusting screw (551) extending to the outside of the wheel (21).

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