A straw returning device for lodging-resistant corn planting

Abstract

The present invention relates to the technical field of agricultural machinery, and is a straw returning device for anti-lodging corn planting, comprising a main frame, a straw cleaning assembly provided at the front end of the main frame, and the straw cleaning assembly comprising an assembly disk, a plurality of spring teeth, a limiting disk and an assembly part. The first end of the spring tooth is detachably connected to the assembly disk, and the second end of the spring tooth extends to the outside of the assembly disk. A maintenance port is provided at the edge of the limiting disk, and the shape of the maintenance port matches the shape of the first end of the spring tooth. The assembly part is fixedly arranged at the center of the assembly disk, the first end of the assembly part is rotatably connected to the main frame, the limiting disk is sleeved on the second end of the assembly part, and can slide along the outer surface of the assembly part. When the present invention is in use, there is no need to remove the assembly disk or the limiting disk, and any spring tooth can be quickly replaced only through the maintenance port at the edge of the limiting disk, which not only reduces the labor intensity of the operator, but also prevents the remaining spring teeth from being exposed to the outside, thereby reducing the risk of damage to the spring teeth.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural machinery, and specifically relates to a straw returning device for lodging-resistant corn planting. Background Art

[0002] Straw-returning technology effectively solves the problem of low seedling emergence rate caused by straw blockage during no-till seeding by collecting straw into the idle rows, forming a clean sowing strip. This improves sowing quality and is particularly suitable for wide-narrow row planting patterns. For example, the Chinese invention patent application number "CN201911234000.7" provides a straw-returning shallow-pressure mulching strip tillage machine. When in use, this device uses a straw cleaning mechanism to return straw to the rows, that is, to push the straw to the outside of the main frame so that the straw is collected on both sides of the main frame. The straw cleaning mechanism includes an inner circular baffle, an outer circular baffle, and several spring tines. If a single spring tine is damaged, it can be replaced separately.

[0003] A drawback of this device is that all the spring tines are located between the inner and outer circular baffles, and neither of these plates has a notch. To replace only one of the spring tines, the inner or outer circular baffle must be removed entirely, a process that increases the operator's workload and exposes the remaining spring tines, increasing the risk of damage. Summary of the Invention

[0004] The purpose of the present invention is to provide a straw returning device for anti-lodging corn planting. There is no need to remove the assembly plate or the limit plate. Any spring tooth can be quickly replaced through the maintenance port at the edge of the limit plate, which not only reduces the labor intensity of the operator, but also prevents the remaining spring teeth from being exposed, reducing the risk of spring tooth damage.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a straw returning device for anti-lodging corn planting, comprising a main frame, a straw cleaning assembly provided at the front end of the main frame, the straw cleaning assembly comprising: an assembly disk; a plurality of spring teeth, all provided on the same side of the assembly disk, and radially and evenly distributed, the first end of the spring tooth being detachably connected to the assembly disk, and the second end of the spring tooth extending to the outside of the assembly disk; a limiting disk, provided on the side of the spring tooth away from the assembly disk, a maintenance port being provided at the edge of the limiting disk, the shape of the maintenance port matching the shape of the first end of the spring tooth; an assembly part, fixedly arranged at the center of the assembly disk, the first end of the assembly part being rotatably connected to the main frame, the limiting disk being sleeved on the second end of the assembly part, and capable of sliding along the outer surface of the assembly part.

[0006] Preferably, the straw cleaning assembly also includes a limiting ring, which is arranged between the assembly disk and the limiting disk, and the assembly disk is fixedly connected to the assembly disk. The limiting disk can slide along the outer surface of the limiting ring, and the limiting ring is provided with an assembly groove, and the middle part of the spring tooth is arranged in the assembly groove.

[0007] Preferably, a sealing plate is provided in the maintenance port, the sealing plate is detachably connected to the limit plate, and the shape of the sealing plate matches the shape of the maintenance port; a pressure block is provided in the assembly groove, the pressure block is arranged on the side of the spring tooth close to the limit plate and can slide along the inner wall of the assembly groove, and the pressure block and the sealing plate are optionally connected.

[0008] Preferably, the diameter of the limiting ring is larger than the diameter of the assembly disk, and a plurality of connecting pieces are provided between the assembly disk and the limiting ring. The connecting pieces are evenly distributed in a ring shape, and the assembly disk and the limiting ring are fixedly connected to the connecting pieces.

[0009] Preferably, the assembly disk extends to the inner side of the limiting ring close to the side of the limiting disk, and the connecting member includes a straight portion, and a first curved portion and a second curved portion are respectively provided on both sides of the straight portion. The straight portion is fixedly connected to the assembly disk, the first curved portion is fixedly connected to the end face of the limiting ring away from the limiting disk, and the second curved portion is fixedly connected to the inner side wall of the limiting ring.

[0010] Preferably, the assembly part includes a protruding rod, both ends of which are respectively located on both sides of the limiting plate, the limiting plate and the protruding rod are detachably connected, a limiting cavity is provided inside the protruding rod, and a limiting assembly is provided in the limiting cavity.

[0011] Preferably, the limiting cavity passes through the end surface of the protruding rod away from the assembly disk, and the limiting assembly includes a first locking member, the first end of the first locking member is an L-shaped structure, the first end of the first locking member can slide along the inner wall of the limiting cavity, and the second end of the first locking member extends to the outside of the protruding rod and is fixedly connected to the drive plate.

[0012] Preferably, the limiting assembly also includes a second locking member, the second locking member includes a limiting plate, the driving plate is a rubber plate, the limiting plate is sleeved on the driving plate, and is detachably connected to the driving plate, the limiting plate is fixedly connected to the first end of the shift rod, and the second end of the shift rod is detachably connected to the limiting plate.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] (1) When the present invention is in use, there is no need to remove the assembly plate or the limit plate. Any spring tooth can be quickly replaced through the maintenance port on the edge of the limit plate, which not only reduces the operator's labor intensity, but also prevents the remaining spring teeth from being exposed, reducing the risk of spring tooth damage.

[0015] (2) The straw cleaning assembly also includes a retaining ring with an assembly slot containing a pressure block. The retaining plate applies pressure to the spring tine through the pressure block, preventing the spring tine from moving within the assembly slot. The sealing plate is larger than the pressure block, and the pressure block and sealing plate can be optionally connected, reducing the chance of the pressure block being lost when replacing the spring tine.

[0016] (3) The interior of the protruding rod is provided with a retaining cavity, within which is a retaining assembly. When only one of the spring teeth needs to be replaced, the retaining assembly ensures that the retaining plate does not move in the axial direction of the protruding rod and does not fall off the protruding rod during rotation. When all the spring teeth need to be replaced, the retaining assembly can be removed, thereby releasing the retaining plate, ensuring that the retaining plate can move in the axial direction of the protruding rod and be removed from the protruding rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is an axonometric drawing of the present invention;

[0018] Figure 2 This is an axonometric view of the straw cleaning component of the present invention at one angle;

[0019] Figure 3 This is an axonometric view of the straw cleaning component of the present invention from another angle;

[0020] Figure 4 An isometric view of the assembly disc and the limiting ring at one angle in the present invention;

[0021] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0022] Figure 6 This is an axonometric view of the assembly disc and the limiting ring in the present invention from another angle;

[0023] Figure 7 for Figure 6 Enlarged view of point B in the middle;

[0024] Figure 8 It is an axonometric view of the spring tooth in the present invention;

[0025] Figure 9 This is an axonometric view of the limiting plate of the present invention;

[0026] Figure 10 for Figure 9 Enlarged view of point C in the middle;

[0027] Figure 11 for Figure 9 Enlarged view of point D in the middle;

[0028] Figure 12 This is an axonometric view of the blocking plate of the present invention;

[0029] Figure 13 It is a front cross-sectional view of the assembly member and the limiting assembly of the present invention when the first locking member is rotated to the first position;

[0030] Figure 14 It is a front cross-sectional view of the assembly member and the limiting assembly of the present invention when the first locking member is rotated to the second position;

[0031] Figure 15 is an axonometric view of the first locking member and the driving plate in the present invention;

[0032] Figure 16 This is an axonometric view of the second locking member in the present invention.

[0033] Reference numerals include:

[0034] 1-main frame, 2-straw cleaning assembly, 21-assembly disk, 22-spring teeth, 23-limiting disk, 231-maintenance port, 232-sealing plate, 233-connecting frame, 24-assembly parts, 241-base, 242-convex rod, 2421-limiting cavity, 25-limiting ring, 251-assembly groove, 252-pressing block, 26-connecting piece, 261-straight part, 262-first curved part, 263-second curved part, 27-limiting assembly, 271-first locking piece, 272-drive plate, 273-second locking piece, 2731-limiting piece, 2732-dial rod, 3-straw pressing roller, 4-subsoiler, 5-rotary tiller, 6-soil retaining plate, 7-depth-limiting pressing roller, 8-auxiliary pressing roller. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] See also Figure 1-16The present invention provides a technical solution: a straw row returning device for anti-lodging corn planting, comprising a main frame 1, two straw cleaning components 2, two straw pressing rollers 3, a deep loosening shovel 4, a rotary tiller 5, a retaining plate 6, a depth-limiting pressing roller 7 and an auxiliary pressing roller 8. The two straw cleaning components 2 are both arranged at the front end of the main frame 1, and the two straw pressing rollers 3 are respectively arranged on both sides of the rear of the two straw cleaning components 2. When the present invention is in use, the tractor drives the main frame 1 to move, and the two straw cleaning components 2 start to rotate after moving forward, and the straw is ejected to the two outer sides of the main frame 1, and the straw on both sides is crushed by the two straw pressing rollers 3. The deep loosening shovel 4 can deeply loosen the seed bed, and the rotary tiller 5 performs rotary tillage and crushing of the soil. The retaining plate 6 is used to block the soil ejected backward when the rotary tiller 5 is working, and the depth-limiting pressing roller 7 and the auxiliary pressing roller 8 perform primary and secondary compaction on the soil after rotary tillage.

[0037] See also Figure 1-3 and Figure 8-10 The straw cleaning component 2 includes an assembly disk 21, a plurality of spring teeth 22, a limiting disk 23 and an assembly part 24. A maintenance port 231 is provided at the edge of the limiting disk 23. The limiting disk 23 cooperates with the assembly disk 21 to prevent the spring teeth 22 from falling off. The assembly part 24 can connect the assembly disk 21 and the main frame 1 together. When the assembly disk 21 rotates, it can drive the plurality of spring teeth 22 to rotate together, and the spring teeth 22 will bounce the straw away to complete the straw return. When only one of the spring teeth 22 needs to be replaced, it is only necessary to rotate the limiting disk 23 so that the maintenance port 231 is aligned with the spring tooth 22 that needs to be replaced. At this time, only the damaged spring tooth 22 is exposed to the outside, and the operator can quickly complete the replacement. During this process, the remaining intact spring teeth 22 are all protected by the assembly disk 21 and the limiting disk 23. Therefore, the present invention not only reduces the labor intensity of the operator, but also the remaining spring teeth 22 will not be exposed to the outside, reducing the risk of damage to the spring teeth 22.

[0038] Example 1

[0039] See also Figure 1-12 The straw cleaning assembly 2 also includes a limiting ring 25, which is provided with an assembly groove 251. The limiting ring 25 is fixedly connected to the assembly disk 21, and the middle part of the spring tooth 22 is located in the assembly groove 251, ensuring that the spring tooth 22 can stably eject the straw when the straw cleaning assembly 2 is working. The limiting disk 23 abuts the side wall of the limiting ring 25, and when the operator rotates the limiting disk 23, the limiting disk 23 can remain stable. A blocking plate 232 is provided in the maintenance port 231, and a pressure block 252 is provided in the assembly groove 251. When the straw cleaning assembly 2 moves and rotates with the main frame 1, the blocking plate 232 is connected to the limiting disk 23, so that the maintenance port 231 is blocked and the spring tooth 22 will not fall off from the position of the maintenance port 231. The limiting disk 23 can apply pressure to the spring tooth 22 through the pressure block 252, and the spring tooth 22 will not shake in the assembly groove 251.

[0040] See also Figure 1-12 , a first threaded hole is provided on the blocking plate 232, and a second threaded hole is provided on the pressing block 252 at a position corresponding to the first threaded hole. A first screw is screwed into the first threaded hole. When the straw cleaning component 2 is in the process of moving and rotating, the first screw is only in the first threaded hole and does not enter the second threaded hole. Therefore, when one of the spring teeth 22 needs to be replaced, the limiting plate 23 can rotate at will and drive the blocking plate 232 to rotate together, and the blocking plate 232 can slide along the outer surface of the pressing block 252. When the maintenance port 231 is aligned with the spring tooth 22 that needs to be replaced, the first threaded hole is aligned with the second threaded hole. Next, the operator turns the first screw forward so that the first screw is screwed into the second threaded hole. At this time, the blocking plate 232 and the pressing block 252 are fixedly connected together. The operator only needs to remove the blocking plate 232 from the limiting plate 23, and the pressing block 252 can move out of the assembly groove 251 along with the blocking plate 232. Because the pressure block 252 is fixed to the sealing plate 232 and is larger than the pressure block 252, the present invention reduces the probability of losing the pressure block 252 when replacing the spring tooth 22. After the spring tooth 22 is replaced, the sealing plate 232 is reinstalled into the maintenance port 231, and the pressure block 252 automatically returns to the assembly slot 251 to press the spring tooth 22. Then, simply reverse the first screw, and the first screw will leave the second threaded hole. The sealing plate 232 and the pressure block 252 are no longer connected, and the limit plate 23 can rotate freely.

[0041] Example 2

[0042] See also Figure 1-7 , the diameter of the limiting ring 25 is larger than the diameter of the assembly disk 21, that is to say, there is a gap between the limiting ring 25 and the assembly disk 21, and the gap makes the spring teeth 22 more elastic. A plurality of connecting members 26 are provided between the assembly disk 21 and the limiting ring 25, and the connecting member 26 includes a straight portion 261, a first curved portion 262 and a second curved portion 263. The assembly disk 21 extends to the inner side of the limiting ring 25 close to the side of the limiting disk 23, the straight portion 261 is fixedly connected to the assembly disk 21, the first curved portion 262 is fixedly connected to the end face of the limiting ring 25 away from the side of the limiting disk 23, and the second curved portion 263 is fixedly connected to the inner side wall of the limiting ring 25. The connecting member 26 makes the limiting ring 25 and the assembly disk 21 stably connected together, and the limiting ring 25 is not easy to fall off from the assembly disk 21, thereby extending the service life of the present invention.

[0043] Example 3

[0044] See also Figure 1-13The assembly 24 includes a base 241 and a protruding rod 242. The main frame 1 is rotatably connected to the base 241, the assembly plate 21 is fixedly connected to the base 241, and the limiting plate 23 is sleeved on the protruding rod 242. When only one of the spring teeth 22 needs to be replaced, the limiting plate 23 can be rotated along the outer surface of the protruding rod 242. When all the spring teeth 22 need to be replaced, the operator pulls the limiting plate 23 outward, and the limiting plate 23 slides along the outer surface of the protruding rod 242 until it is free from the protruding rod 242. At this point, all the spring teeth 22 are exposed, allowing the operator to remove and replace them all.

[0045] See also Figure 1-13 A connecting frame 233 is fixedly provided at the center of the limiting disk 23, and the connecting frame 233 and the protruding rod 242 can be optionally connected. A third threaded hole is provided on the connecting frame 233, and a fourth threaded hole is provided on the protruding rod 242. When the straw cleaning component 2 moves and rotates following the main frame 1, a second screw is screwed into the third threaded hole and the fourth threaded hole, and the limiting disk 23 can rotate synchronously with the assembly disk 21. When the spring tooth 22 needs to be replaced, the operator unscrews the second screw, the connecting frame 233 is separated from the protruding rod 242, and the connecting frame 233 can slide along the outer surface of the protruding rod 242. At this time, the limiting disk 23 can rotate freely, and the maintenance port 231 can be aligned with the spring tooth 22 that needs to be replaced. After the spring tooth 22 is replaced, the limiting disk 23 is rotated so that the third threaded hole is aligned with the fourth threaded hole, and the second screw is re-screwed, and the connecting frame 233 and the protruding rod 242 are fixed together again.

[0046] See also Figure 1-14 The protruding rod 242 is provided with a retaining cavity 2421, which houses a retaining assembly 27. When only one of the spring teeth 22 needs to be replaced, the retaining assembly 27 ensures that the retaining plate 23 does not move axially along the protruding rod 242, preventing the retaining plate 23 from falling off the protruding rod 242 during rotation. When all the spring teeth 22 need to be replaced, the retaining assembly 27 can be removed, thereby releasing the retaining plate 23 and allowing it to move axially along the protruding rod 242 and be removed from the protruding rod 242.

[0047] See also Figure 1-16The limiting assembly 27 includes a first locking member 271, a driving plate 272 and a second locking member 273. The first end of the first locking member 271 is in an L-shaped structure, and the second locking member 273 includes a limiting plate 2731 and a shift rod 2732. The shape of the driving plate 272 can be any shape other than a perfect circle, such as a square, an ellipse, and a star. In this embodiment, the driving plate 272 is triangular. If the operator places the first end of the first locking member 271 into the limiting cavity 2421, the first end of the first locking member 271 can be rotated to the first position, thereby hooking the inner wall of the limiting cavity 2421. A plug-in hole is provided on the limiting plate 2731, and the shape of the plug-in hole is the same as that of the driving plate 272, and the size of the plug-in hole is smaller than the size of the driving plate 272. Then, when the limiting piece 2731 is placed on the driving piece 272, since the driving piece 272 is a rubber piece, the driving piece 272 can be fixed to the limiting piece 2731 by friction, and the driving piece 272 and the first locking member 271 cannot rotate freely. Next, the operator connects the lever 2732 to the connecting frame 233, and the straw cleaning assembly 2 can work normally.

[0048] See also Figure 1-16 When only one of the spring teeth 22 needs to be replaced, the operator removes the second screw and grasps the lever 2732, which drives the limit assembly 27 and the limit plate 23 to rotate together. At this time, the first end of the first locking member 271 slides along the inner wall of the limit cavity 2421. The first locking member 271 cooperates with the protruding rod 242, restricting the limit plate 23 to rotation and preventing it from moving along the axial direction of the protruding rod 242.

[0049] See also Figure 1-16 When all the spring teeth 22 need to be replaced, the operator first removes the lever 2732 from the connecting frame 233 and then pulls the limiting plate 2731 outward until the limiting plate 2731 overcomes the friction and disengages the driving plate 272. At this point, the driving plate 272 is unrestricted. The operator rotates the driving plate 272 until the first end of the first locking member 271 rotates to the second position, where the first end of the first locking member 271 no longer hooks onto the inner wall of the limiting cavity 2421. The entire limiting assembly 27 is then removed, allowing the limiting plate 23 to move axially along the protruding rod 242 and be removed from the protruding rod 242.

[0050] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0051] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A straw returning device for anti-lodging corn planting, comprising a main frame, a straw cleaning component is provided at the front end of the main frame, characterized in that: The straw cleaning component comprises: Assembly tray; A plurality of spring teeth are provided on the same side of the assembly disk and are evenly distributed radially, wherein the first ends of the spring teeth are detachably connected to the assembly disk and the second ends of the spring teeth extend to the outside of the assembly disk; A limiting plate is provided on the side of the spring tooth away from the assembly plate, and a maintenance port is provided at the edge of the limiting plate, the shape of the maintenance port matching the shape of the first end portion of the spring tooth; An assembly part is fixedly arranged at the center of the assembly plate, a first end of the assembly part is rotatably connected to the main frame, and the limit plate is sleeved on the second end of the assembly part and can slide along the outer surface of the assembly part; The assembly part includes a protruding rod, the two ends of which are respectively located on both sides of the limiting plate, the limiting plate and the protruding rod are detachably connected, a limiting cavity is provided inside the protruding rod, and a limiting assembly is provided in the limiting cavity; The limiting cavity passes through the end surface of the protruding rod away from the assembly disk, and the limiting assembly includes a first locking member, the first end of the first locking member is L-shaped, the first end of the first locking member is capable of sliding along the inner wall of the limiting cavity, and the second end of the first locking member extends to the outside of the protruding rod and is fixedly connected to the driving plate; The limiting assembly also includes a second locking member, which includes a limiting plate. The driving plate is a rubber plate. The limiting plate is sleeved on the driving plate and is detachably connected to the driving plate. The limiting plate is fixedly connected to the first end of the shift rod, and the second end of the shift rod is detachably connected to the limiting plate.

2. The lodging-resistant corn planting straw returning device according to claim 1, characterized in that: The straw cleaning assembly also includes a limiting ring, which is arranged between the assembly disk and the limiting disk. The assembly disk is fixedly connected to the assembly disk. The limiting disk can slide along the outer surface of the limiting ring. The limiting ring is provided with an assembly groove, and the middle part of the spring tooth is arranged in the assembly groove.

3. The lodging-resistant corn planting straw returning device according to claim 2, characterized in that: A blocking plate is provided in the maintenance port, the blocking plate is detachably connected to the limit plate, and the shape of the blocking plate matches the shape of the maintenance port; A pressing block is provided in the assembly groove. The pressing block is provided on a side of the spring tooth close to the limiting plate and can slide along the inner wall of the assembly groove. The pressing block is selectively connected to the blocking plate.

4. The lodging-resistant corn planting straw returning device according to claim 2, characterized in that: The diameter of the limiting ring is greater than the diameter of the assembly disk. A plurality of connecting pieces are provided between the assembly disk and the limiting ring. The connecting pieces are evenly distributed in a ring shape. The assembly disk and the limiting ring are both fixedly connected to the connecting pieces.

5. The lodging-resistant corn planting straw returning device according to claim 4, characterized in that: The assembly disk extends to the inner side of the limiting ring close to the side of the limiting disk, and the connecting member includes a straight portion, and a first curved portion and a second curved portion are respectively provided on both sides of the straight portion. The straight portion is fixedly connected to the assembly disk, the first curved portion is fixedly connected to the end face of the limiting ring away from the limiting disk, and the second curved portion is fixedly connected to the inner side wall of the limiting ring.

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